記述言語：英語   掲載種別：研究論文（学術雑誌）  

INTRODUCTION: The removal of low- and medium-molecular-weight proteins has been improved with online hemodiafiltration (OL-HDF) and hemodialysis using high-flux membranes; however, the outcomes of patients with end-stage kidney disease (ESKD) undergoing dialysis treatment are still worse than in the general population. α1-Microglobulin (α1-m), with a molecular weight of 33,000 Da, may contribute to dialysis-related disorders and mortality. However, the removal is insufficient even with current OL-HDF using the polysulfone (PS) membrane, which is common in Japan. Polymethylmethacrylate (PMMA) membranes can remove medium- to high-molecular-weight proteins by adsorption. This study aimed to assess the efficacy of removing medium- to high-molecular-weight proteins, such as α1-m and β2-microglobulin (β2-m), through post-dilution OL-HDF with PMMA (Post-PMMA). The assessment was conducted in comparison to pre-dilution OL-HDF with PS (Pre-PS), using an open-label, single-arm study. METHODS: Seven patients with ESKD on Pre-PS underwent Post-PMMA with replacement volume of 30 mL/min (low flow) and 50 mL/min (high flow). Clearance and removal rates of α1-m, β2-m, small molecules, inflammatory cytokines, and albumin were measured at 60 and 240 min of treatment. RESULTS: Clearance rates of α1-m at 60 min were -2.8 ± 5.2 mL/min with Pre-PS, -0.4 ± 2.6 mL/min with Post-PMMA (low), and 0.6 ± 3.4 mL/min with Post-PMMA (high). The removal rate of α1-m was higher in Post-PMMA than that in Pre-HDF-PS (Post-PMMA [high] 17.7 ± 5.9%, Post-PMMA [low] 15.0 ± 5.6%, and Pre-PS 4.1 ± 5.5%). Adsorption clearance of β2-m was increased with Post-PMMA. Albumin leakage in Post-PMMA was not higher than that in Pre-PS. CONCLUSION: The removal rate of α1-m with Post-PMMA was higher than that with Pre-PS. The PMMA membrane adsorbed β2-m, suggesting the removal effect of medium- to high-molecular-weight proteins by the adsorption method. Since Post-PMMA effectively removes α1-m without excessive albumin leakage, it will be useful for patients with ESKD, especially those with a poor nutritional status.

DOI： 10.1159/000534459

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）  

The conditional approval for a new drug application in Japan is an expedited drug development program intended to improve patients’ access to potentially effective drugs in serious diseases without effective therapies, particularly where timely confirmatory clinical trials are difficult to conduct. Several new drugs have been approved through this pathway, however, there are emerging issues to be addressed. This paper provides an overview of current state and future directions of conditional approval in Japan.

添付ファイル： Tanaka et al_Conditional early approval for new drug applications in Japan_CTS2023.pdf

DOI： 10.1111/cts.13536

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.kint.2023.05.009

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記述言語：日本語   出版者・発行元：一般社団法人 日本臨床薬理学会  

【目的】医薬品は、製造販売承認後に様々な背景を有する多くの患者で使用されることで、新たなリスクが明らかになることは少なくない。このため、製造販売業者は、承認後も安全性情報を収集し、必要に応じて規制当局への報告と添付文書の改訂を行っている。通常の添付文書改訂よりも強い注意喚起が必要な場合には、厚生労働省の指示に基づいて、製造販売業者は、緊急安全性情報（イエローレター）及び安全性速報（ブルーレター）を発行する。本研究では、イエローレター及びブルーレターのレビューに基づいて、製造販売承認後の安全性情報の重要性を検討した。

【方法】医薬品等安全性情報報告制度の運用が開始された1997年7月から2022年12月までに医薬品に対して配布されたイエローレター及びブルーレターを対象とした。データソースとして、該当する医薬品添付文書及び審査報告書を使用した。複数の薬物有害反応が報告されているレターについては、まとめて1件として扱い、そのすべてが添付文書または審査報告書に記載されている場合を記載ありと定めた。

【結果】研究対象期間内に、医薬品32品目に対してイエローレター16件及びブルーレター20件（計36件）が配布された。7件が抗悪性腫瘍剤（19.4％）、29件が非抗悪性腫瘍剤に対するレターであった（80.6％）。承認日からレター発行までの期間の中央値（四分位範囲）は、20（10-55）ヵ月であった。レターに関連した薬物有害反応のうち、承認時の審査報告書及びレター発行前の医薬品添付文書に未記載であったものは、それぞれ13/27（48.1％）及び11/36（30.6％）であった。これらの薬物有害反応について、承認前の臨床試験で有害事象が確認されていた10/14品目（71.4％）では、製造販売後調査の必要性が審査報告書に記載されていた。35/36（97.1％）で添付文書が改訂され、特に27/36（75.0％）で「警告」又は「禁忌」の項が修正された。レター発行後に7品目が販売中止となった。

【結論】イエローレター及びブルーレターが発行された薬物有害反応の約半数は、承認時点で明らかでなかった。製造販売承認後の継続的な安全性情報収集の重要性が確認された。

DOI： 10.50993/jsptsuppl.44.0_2-c-p-h3

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）  

Tanaka M. Invitation to Regulatory Science. Niigata Med J. 2022;136(12):409−417. (Japanese)

添付ファイル： 田中基嗣_レギュラトリーサイエンスへの誘い_新潟医学会雑誌2022.pdf

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

<title>Abstract</title><sec>
<title>Background</title>
Aortic arch calcification (AAC) is a well-known risk factor for death in patients on hemodialysis (HD); however, the causes of death among them have not been well studied. The study aimed to investigate the distribution of causes of death and long-term prognosis among different degrees of AAC in HD patients.


</sec><sec>
<title>Methods</title>
A retrospective cohort study was conducted on patients undergoing HD at two clinics in Japan. AAC grades 0 to 3 were categorized by chest radiograph at baseline, and mortality and causes of death were collected. A subgroup analysis was performed to evaluate the relationship between causes of death and age, diabetes mellitus, and dialysis vintage in each AAC grade.


</sec><sec>
<title>Results</title>
A total of 321 patients were included in the analysis. During 5.2 ± 2.1 years, 117 patients died, and the death rates in AAC grades 0, 1, 2, and 3 were 19.3% (17/88), 35.2% (51/145), 46.3% (25/54), and 70.6% (24/34), respectively. The major causes of death were cardiovascular disease (CVD, 39.3%), infection (20.5%), and malignancy (15.4%) in the entire cohort. In AAC grade 3, CVD mortality (33.3%) remains as the most common cause of death, although death of infection (29.2%) and malnutrition (16.7%) increased markedly. A subgroup analysis showed that AAC grade 3 was mostly old, non-diabetic patients with a long dialysis vintage and was susceptible to death of infection or malnutrition.


</sec><sec>
<title>Conclusions</title>
CVD was the most common cause of death among all AAC grades, although death of infection and malnutrition markedly increased in those with severe AAC. Attention should be paid to CVD, infection, and malnutrition in HD patients with severe AAC.


</sec>

添付ファイル： Hashiba_et al_Cause of death AAC HD_RRT2022.pdf

DOI： 10.1186/s41100-022-00394-8

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その他リンク： https://link.springer.com/article/10.1186/s41100-022-00394-8/fulltext.html

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

INTRODUCTION: We investigated whether N-terminal and C-terminal products of expressed in renal cell carcinoma/mesothelin (N-ERC and C-ERC) in peritoneal effluent can predict peritoneal permeability in patients undergoing peritoneal dialysis (PD). METHODS: Thirty-seven peritoneal effluent samples were obtained from 26 PD patients. High transport status was determined by the peritoneal equilibration test as a dialysate/plasma ratio of creatinine (D/P Cr) ≥ 0.81. Effluent cancer antigen 125 (CA125) was used as a reference. RESULTS: Effluent N-ERC concentration was better correlated with D/P Cr than effluent C-ERC or CA125 concentration. In multivariate analyses, effluent N-ERC and C-ERC, but not CA125, were significant predictors of high transport status after adjusting for age, PD duration, and residual renal Kt/V. ROC analysis showed that effluent N-ERC was the best predictor of high transport status among those three biomarkers. CONCLUSION: Effluent N-ERC predicts increased peritoneal permeability in patients undergoing PD.

DOI： 10.1111/1744-9987.13786

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1744-9987.13786

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

<title>Abstract</title>Long-term infection of the stomach with <italic>Helicobacter pylori</italic> can cause gastric cancer. However, the mechanisms by which the bacteria adapt to the stomach environment are poorly understood. Here, we show that a small non-coding RNA of <italic>H. pylori</italic> (HPnc4160, also known as IsoB or NikS) regulates the pathogen’s adaptation to the host environment as well as bacterial oncoprotein production. In a rodent model of <italic>H. pylori</italic> infection, the genomes of bacteria isolated from the stomach possess an increased number of T-repeats upstream of the HPnc4160-coding region, and this leads to reduced HPnc4160 expression. We use RNA-seq and iTRAQ analyses to identify eight targets of HPnc4160, including genes encoding outer membrane proteins and oncoprotein CagA. Mutant strains with HPnc4160 deficiency display increased colonization ability of the mouse stomach, in comparison with the wild-type strain. Furthermore, HPnc4160 expression is lower in clinical isolates from gastric cancer patients than in isolates derived from non-cancer patients, while the expression of HPnc4160’s targets is higher in the isolates from gastric cancer patients. Therefore, the small RNA HPnc4160 regulates <italic>H. pylori</italic> adaptation to the host environment and, potentially, gastric carcinogenesis.

添付ファイル： Kinoshita et al_Small RNA regulates H.pylori adaptation_Nat Commun2021.pdf

DOI： 10.1038/s41467-021-22317-7

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その他リンク： http://www.nature.com/articles/s41467-021-22317-7

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier {BV}  

DOI： 10.1016/j.kint.2021.03.034

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1002/cpt.2275

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/cpt.2275

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/bcp.14807

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Oxford University Press (OUP)  

<title>Abstract</title>
<sec>
<title>Objectives</title>
ANCA-associated vasculitis (AAV) can affect all age groups. We aimed to show that differences in disease presentation and 6 month outcome between younger- and older-onset patients are still incompletely understood.


</sec>
<sec>
<title>Methods</title>
We included patients enrolled in the Diagnostic and Classification Criteria for Primary Systemic Vasculitis (DCVAS) study between October 2010 and January 2017 with a diagnosis of AAV. We divided the population according to age at diagnosis: &amp;lt;65 years or ≥65 years. We adjusted associations for the type of AAV and the type of ANCA (anti-MPO, anti-PR3 or negative).


</sec>
<sec>
<title>Results</title>
A total of 1338 patients with AAV were included: 66% had disease onset at &amp;lt;65 years of age [female 50%; mean age 48.4 years (s.d. 12.6)] and 34% had disease onset at ≥65 years [female 54%; mean age 73.6 years (s.d. 6)]. ANCA (MPO) positivity was more frequent in the older group (48% vs 27%; P = 0.001). Younger patients had higher rates of musculoskeletal, cutaneous and ENT manifestations compared with older patients. Systemic, neurologic,cardiovascular involvement and worsening renal function were more frequent in the older-onset group. Damage accrual, measured with the Vasculitis Damage Index (VDI), was significantly higher in older patients, 12% of whom had a 6 month VDI ≥5, compared with 7% of younger patients (P = 0.01). Older age was an independent risk factor for early death within 6 months from diagnosis [hazard ratio 2.06 (95% CI 1.07, 3.97); P = 0.03].


</sec>
<sec>
<title>Conclusion</title>
Within 6 months of diagnosis of AAV, patients &amp;gt;65 years of age display a different pattern of organ involvement and an increased risk of significant damage and mortality compared with younger patients.


</sec>

添付ファイル： Monti et al_DCVAS_Rheumatology2021.pdf

DOI： 10.1093/rheumatology/keaa215

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Overhydration is a major cause of technique failure of peritoneal dialysis (PD). Hence, we investigated the impact of ultrafiltration (UF) volume by once-weekly hemodialysis (HD), excess volume beyond their dry weight, on technique survival of PD and HD combination therapy (PD+HD). Forty-six anuric PD+HD patients were divided into three groups according to baseline UF volume by HD: low-UF (<mean - 1SD), middle-UF (≥mean - 1SD and <mean + 1SD), and high-UF (≥mean + 1SD). High-UF group showed larger extracellular water normalized to height (P = .038) and longer HD sessions (P < .001) compared with low-UF group, whereas low-UF group was older than middle-UF group (P = .001). Technique survival rate was significantly lower in high-UF group than in low and middle-UF groups (P < .001), and the rates at 44 months were 80%, 90%, 20% in low, middle, and high-UF groups, respectively. Chronic overhydration was the leading cause of technique failure for all. This study suggests that fluid overload remains a major cause of technique failure of PD even after once-weekly HD is added.

DOI： 10.1111/1744-9987.13509

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1744-9987.13509

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/bcp.14749

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

<title>Abstract</title>Combination therapy with peritoneal dialysis and hemodialysis (PD+HD) is an alternative dialysis method for patients with end-stage kidney disease (ESKD). The complementary use of once-weekly HD expedites to achieve adequate dialysis and enables to prolong PD duration. Although PD+HD has been widely employed among Japanese PD patients, it is much less common outside Japan. Clinical evidences are still not enough, especially in long-term prognosis and appropriate treatment duration, suitable patients, and generalizability. A retrospective cohort study by Chung et al. (BMC Nephrol 21:348, 2020) compared the risk of mortality and hospitalization between PD patients who were transferred to PD+HD and those who were transferred to HD in Taiwan. Because the mortality and hospitalization rates did not differ between the groups, the authors concluded that, PD+HD may be a rational and cost-effective treatment option. It should be noted that the effects of PD+HD on long-term prognosis are still unknown due to too-short PD+HD duration. However, the study identified the high-risk patient population and showed the generalizability of PD+HD. PD+HD is a treatment of choice in patients with ESKD who prefer PD lifestyles even after decline in residual kidney function.

添付ファイル： Tanaka and Mise_ commentary_BMC Nephrol2021.pdf

DOI： 10.1186/s12882-020-02212-x

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その他リンク： http://link.springer.com/article/10.1186/s12882-020-02212-x/fulltext.html

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

The Pharmaceuticals and Medical Devices Agency (PMDA) have approved hundreds of new drugs in recent years. We retrospectively analyzed the new drugs approved in Japan from 2008 to 2019, and identify the first-in-world approvals and clarify the current drug lag. The new drug and the drug lag were defined as a drug with a new active substance and a difference between the approval date in Japan and the international birth date, respectively. Among 400 new drugs approved in Japan during the last 12 years, 80 (20.0%) were first approved in Japan, and 320 were outside Japan (the United States: 202, 50.5%; Europe: 82, 20.5%; other regions: 36, 9.0%). Of these, 45 new drugs have not yet been approved outside Japan, and the remaining 355 have been globally approved in Japan and overseas. The number of new drug approvals were the largest in oncology followed by metabolic/endocrine and infectious diseases. The median drug lags (year) among all 400 new drugs and 355 new drugs with global approvals were 4.3 and 4.7 in the 1st tertile (2008-2011), 1.5 and 2.6 in the 2nd tertile (2012-2015), and reduced to 1.3 and 2.2 in the 3rd tertile (2016-2019), respectively. Substantial drug lag remains in neurology, psychiatry, and therapeutic areas where the number of new drug approvals was relatively small. Collectively, one-fifth of the new drugs approved in Japan are first-in-world approvals. Drug lag has been greatly decreased, although it still exists.

添付ファイル： Tanaka et al_400NAS_Clin Pharmacol Ther2020.pdf

DOI： 10.1002/cpt.2080

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1002/cpt.2080

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

Kidney failure is an important outcome for patients, clinicians, researchers, healthcare systems, payers, and regulators. However, no harmonized international consensus definitions of kidney failure and key surrogates of progression to kidney failure exist specifically for clinical trials. The International Society of Nephrology convened an international multi-stakeholder meeting to develop consensus on this topic. A core group, experienced in design, conduct, and outcome adjudication of clinical trials, developed a database of 64 randomized trials and the 163 included definitions relevant to kidney failure. Using an iterative process, a set of proposed consensus definitions were developed and subsequently vetted by the larger multi-stakeholder group of 83 participants representing 18 different countries. The consensus of the meeting participants was that clinical trial kidney failure outcomes should be comprised of a composite that includes receipt of a kidney transplant, initiation of maintenance dialysis, and death from kidney failure; it may also include outcomes based solely on laboratory measurements of glomerular filtration rate: a sustained low glomerular filtration rate and a sustained percent decline in glomerular filtration rate. Discussion included important considerations, such as (i) recognition of existing nomenclature for kidney failure; (ii) applicability across resource settings; (iii) ease of understanding for all stakeholders; and (iv) avoidance of inappropriate complexity so that the definitions can be used across ranges of populations and trial methodologies. The final definitions reflect the consensus for use in clinical trials.

添付ファイル： Kidney failure clinical trial outcome definitions_A Levin et al_KI2020.pdf

DOI： 10.1016/j.kint.2020.07.013

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担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Society of Nephrology (ASN)  

添付ファイル： Tanaka M, et al_Role of Roxadustat for ESA-Resistant Renal Anemia —Read with Caution_letter_JASN2020.pdf

DOI： 10.1681/asn.2020060821

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Combination therapy with peritoneal dialysis and hemodialysis (PD+HD) is widely used in Japan for PD patients with decreased residual renal function. However, fluid status in PD+HD patients has not been well studied. In this cross-sectional study, we compared fluid status in 41 PD+HD patients with that in 103 HD and 92 PD patients using the bioimpedance spectroscopy. Extracellular water normalized to patient height (NECW, kg/m) was the highest in pre-HD (8.3 ± 1.6) followed by PD (7.9 ± 2.7), PD+HD (7.5 ± 2.5), and post-HD patients (6.9 ± 1.5) (P < 0.01). By multiple linear regression analysis, PD+HD was associated with a significantly lower NECW than pre-HD (β = -0.8, P = 0.03) and similar to PD (β = -0.5, P = 0.24) and post-HD (β = 0.6, P = 0.08) after adjustment for age, sex, diabetic nephropathy, ischemic heart disease, dialysis period, and daily urine volume. There was no correlation between NECW and daily urine volume in all dialysis groups. Average daily fluid removal (a sum of urine volume and ultrafiltration volume by dialysis) was positively correlated with NECW in PD+HD and pre-HD, but not in PD and post-HD patients. Our results suggest that fluid status in PD+HD patients with decreased residual renal function is acceptable as compared with that in HD and PD patients.

DOI： 10.1111/1744-9987.13444

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その他リンク： https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1744-9987.13444

記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

Helicobacter pylori, a pathogenic bacterium that colonizes in the human stomach, harbors DNA repair genes to counter the gastric environment during chronic infection. In addition, H. pylori adapts to the host environment by undergoing antigenic phase variation caused by genomic mutations. The emergence of mutations in nucleotide sequences is one of the major factors underlying drug resistance and genetic diversity in bacteria. However, it is not clear how DNA repair genes contribute to driving the genetic change of H. pylori during chronic infection. To elucidate the physiological roles of DNA repair genes, we generated DNA repair-deficient strains of H. pylori (ΔuvrA, ΔuvrB, ΔruvA, Δnth, ΔmutY, ΔmutS, and Δung). We performed susceptibility testing to rifampicin in vitro and found that ΔmutY exhibited the highest mutation frequency among the mutants. The number of bacteria colonizing the stomach was significantly lower with ΔmutY strain compared with wild-type strains in a Mongolian gerbil model of H. pylori infection. Furthermore, we performed a genomic sequence analysis of the strains isolated from the Mongolian gerbil stomachs eight weeks after infection. We found that the isolated ΔmutY strains exhibited a high frequency of spontaneous G:C to T:A mutations. However, the frequency of phase variations in the ΔmutY strain was almost similar to the wild-type strain. These results suggest that MutY may play a role in modes of gastric environmental adaptation distinct from phase variation.

DOI： 10.1016/j.bbrc.2020.02.087

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

Introduction: Combination therapy with peritoneal dialysis and hemodialysis (PD+HD) is widely used for PD patients with decreased residual kidney function in Japan; however, hospitalization for this combined dialysis has not been investigated so far. We compared the risk of hospitalization for PD+HD with that for HD.
Methods: A multicenter, prospective observational study was conducted on 42 PD+HD and 42 HD patients matched for age and diabetic nephropathy. The main outcome measure was the cumulative incidence of hospitalization for any cause assessed with the Kaplan-Meier method. Hospitalization rates (the number of admissions per 100 patient-years) associated with dialysis modality were also calculated. The impact of dialysis modality on time to hospitalization was analyzed using the Cox proportional hazard model.
Results: There was no significant difference between groups in terms of age, sex, dialysis vintage, diabetic nephropathy, and comorbidities. The cumulative incidence of hospitalization did not significantly differ between the groups (log-rank test, P = 0.36). Although total hospitalization rates were 66.0 in PD+HD and 59.2 in HD, hospitalization rates for the sum of PD-related infections (a composite of catheter-related infection and peritonitis) and vascular access troubles were 21.7 in PD+HD and 7.2 in HD. On univariate Cox proportional hazard analysis, dialysis modality had no significant impact on time to hospitalization.
Conclusion: The risk of hospitalization was not significantly different between PD+HD and HD, although PD+HD patients had a higher risk of dialysis access-related complications than HD patients.

添付ファイル： Tanaka M, et al. Hospitalization for PD+HD Versus HD_KI rep2020.pdf

DOI： 10.1016/j.ekir.2020.01.004

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担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Group A Streptococcus (GAS) secretes deoxyribonucleases and evades neutrophil extracellular killing by degrading neutrophil extracellular traps (NETs). However, limited information is currently available on the interaction between GAS and NETs in the pathogenicity of GAS pharyngitis. In this study, we modified a mouse model of GAS pharyngitis and revealed an essential role for DNase in this model. After intranasal infection, the nasal mucosa was markedly damaged near the nasal cavity, at which GAS was surrounded by neutrophils. When neutrophils were depleted from mice, GAS colonization and damage to the nasal mucosa were significantly decreased. Furthermore, mice infected with deoxyribonuclease knockout GAS mutants (∆spd, ∆endA, and ∆sdaD2) survived significantly better than those infected with wild-type GAS. In addition, the supernatants of digested NETs enhanced GAS-induced cell death in vitro. Collectively, these results indicate that NET degradation products may contribute to the establishment of pharyngeal infection caused by GAS.

添付ファイル： Tanaka M, et al. GAS_SciRep2020.pdf

DOI： 10.1038/s41598-020-60306-w

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その他リンク： http://www.nature.com/articles/s41598-020-60306-w

担当区分：筆頭著者,　責任著者   記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

Background: The health-related quality of life (HRQOL) of dialysis patients has not been well examined, especially in combination therapy with peritoneal dialysis and hemodialysis (PD+HD) patients. We compared the HRQOL of PD+HD patients with that of HD and PD patients.
Methods: A multicenter, cross-sectional study was conducted on 36 PD+HD, 103 HD, and 90 PD patients in Japan who completed the Kidney Disease Quality of Life Short Form 36, version 1.3. HRQOL scores were summarized into physical- (PCS), mental- (MCS), role/social- (RCS), and kidney disease component summaries (KDCS).
Results: Of the PD+HD patients, 31 (86%) transferred from PD and 5 (14%) transferred from HD. They had the longest dialysis vintage and the smallest urine volume. PCS, MCS, and KDCS HRQOL scores of PD+HD patients were comparable with those of HD and PD patients. However, the RCS score for PD+HD was significantly higher than that for HD (p = 0.020) and comparable with that for PD. PD+HD and PD were associated with significantly higher RCS scores than HD after adjusting for age, gender, diabetic nephropathy, dialysis vintage, ischemic heart disease, and peripheral arterial disease.
Conclusions: For RCS, HRQOL in PD+HD patients was better than that in HD and comparable with that in PD patients, whereas the PCS, MCS, and KDCS HRQOL scores of PD+HD patients were comparable with those of HD and PD patients.

DOI： 10.1177/0896860819894066

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.1177/0896860819894066

担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：American Society of Nephrology (ASN)  

添付ファイル： Tanaka M, et al_ESA resistance may be a potential confounder for mortality among different ESA types_JASN2020.pdf

DOI： 10.1681/asn.2019060556

DOI： 10.1681/ASN.2019060556

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Background: The clinical benefit of early colonoscopy within 24 h of arrival in patients with severe acute lower gastrointestinal bleeding (ALGIB) remains controversial. This trial will compare early colonoscopy (performed within 24 h) versus elective colonoscopy (performed between 24 and 96 h) to examine the identification rate of stigmata of recent hemorrhage (SRH) in ALGIB patients. We hypothesize that, compared with elective colonoscopy, early colonoscopy increases the identification of SRH and subsequently improves clinical outcomes.
Methods: This trial is an investigator-initiated, multicenter, randomized, open-label, parallel-group trial examining the superiority of early colonoscopy over elective colonoscopy (standard therapy) in ALGIB patients. The primary outcome measure is the identification of SRH. Secondary outcomes include 30-day rebleeding, success of endoscopic treatment, need for additional endoscopic examination, need for interventional radiology, need for surgery, need for transfusion during hospitalization, length of stay, 30-day thrombotic events, 30-day mortality, preparation-related adverse events, and colonoscopy-related adverse events. The sample size will enable detection of a 9% SRH rate in elective colonoscopy patients and a SRH rate of ≥ 26% in early colonoscopy patients with a risk of type I error of 5% and a power of 80%.
Discussion: This trial will provide high-quality data on the benefits and risks of early colonoscopy in ALGIB patients.

添付ファイル： Niikura R, Tanaka M, et al. Trials2018.pdf

DOI： 10.1186/s13063-018-2558-y

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その他リンク： http://link.springer.com/article/10.1186/s13063-018-2558-y/fulltext.html

記述言語：日本語   出版者・発行元：(一社)日本泌尿器科学会総会事務局  

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Open Access Text Pvt, Ltd.  

添付ファイル： Yamada D, Tanaka M, et al. Naftpidil protocol_Prev Med Commun Health2018.pdf

DOI： 10.15761/pmch.1000106

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記述言語：日本語   出版者・発行元：(株)医事出版社  

健康成人男性を対象に、ベポタスチンベシル酸塩OD錠10mg「日医工」(試験製剤)と先発医薬品タリオンOD錠10mg(標準製剤)の生物学的同等性試験を行った。対象は水なし投与試験24例(20〜38歳、平均年齢26.2±5.9歳:体重50.5〜74.4kg、平均体重61.3±5.3kg)、水あり投与試験24例(22〜40歳、平均年齢30.1±6.0歳:体重53.1〜76.0kg、平均体重62.5±7.1kg)に分けて検討した。検討内容は、血漿中濃度推移、生物学的同等性、安全性とした。その結果、2剤における水なし投与、水あり投与のいずれの試験も同等性試験ガイドラインの判定基準を満たしていた。また、試験製剤による重篤な副作用は認めなかった。以上より、試験製剤は標準製剤と生物学的に同等で安全であると考えられた。

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Peritonitis remains an important cause of morbidity and mortality in peritoneal dialysis (PD) patients, but its incidence and the distribution of causative organisms vary widely between institutions and age groups. This study was performed to investigate the recent status and risk factors of PD-related peritonitis and to clarify differences between age groups. We retrospectively reviewed the medical records of 119 PD patients treated at our department between January 2002 and January 2013. We calculated both overall and organism-specific peritonitis rates and also analyzed risk factors. Sixty-three episodes of peritonitis occurred during 261.5 patient-years for an incident rate of 0.24 episodes/patient-year. Multivariate analysis showed that older age (≥65 years) and hypoalbuminemia (<3.0 g/dL) were associated with an increased risk of peritonitis (P = 0.035 and P = 0.029, respectively). In elderly patients (≥65 years old), the rate of peritonitis due to Gram-positive and Gram-negative bacteria was 0.17 and 0.08 episodes/patient-year, respectively, and Gram-positive peritonitis was markedly more frequent than in younger patients (<65 years old). In particular, there was a high frequency of Staphylococcus aureus peritonitis in elderly patients (0.09 episodes/patient-year) and it had a poor outcome. At our department, the risk of peritonitis was increased in older patients and patients with hypoalbuminemia. The distribution of causative organisms was markedly different between age groups and analysis of organism-specific peritonitis rates helped to identify current problems with our PD program.

DOI： 10.1111/1744-9987.12449

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

DOI： 10.1016/j.ebiom.2016.07.012

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Small-vessel vasculitis is a life-threatening autoimmune disease that is frequently associated with anti-neutrophil cytoplasmic antibodies (ANCAs). Conventional immunotherapy including steroids and cyclophosphamide can cause serious adverse events, limiting the efficacy and safety of treatment. Eicosapentaenoic acid (EPA), a key component of fish oil, is an omega-3 polyunsaturated fatty acid widely known to be cardioprotective and beneficial for vascular function. We report two elderly patients with systemic ANCA-associated vasculitis (AAV) in whom the administration of EPA in concert with steroids safely induced and maintained remission, without the use of additioal immunosuppressants. To explore the mechanisms by which EPA enhances the treatment of AAV, we employed SCG/Kj mice as a spontaneous murine model of AAV. Dietary enrichment with EPA significantly delayed the onset of crescentic glomerulonephritis and prolonged the overall survival. EPA-derived anti-inflammatory lipid mediators and their precursors were present in the kidney, plasma, spleen, and lungs in the EPA-treated mice. Furthermore, a decrease in ANCA production and CD4/CD8-double negative T cells, and an increase in Foxp3(+) regulatory T cells in the lymph nodes of the kidney were observed in the EPA-treated mice. These clinical and experimental observations suggest that EPA can safely support and augment conventional therapy for treating autoimmune small-vessel vasculitis.

添付ファイル： Hirahashi J, Tanaka M, et al. EPA for small-vessel vasculitis. Sci Rep2014.pdf

DOI： 10.1038/srep06406

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その他リンク： http://www.nature.com/articles/srep06406

掲載種別：研究論文（学術雑誌）   出版者・発行元：S. Karger AG  

Background: The relationship between dialysis amyloid (DA) deposition in the aortic valve (AV) and aortic stenosis (AS) is unknown.
Methods: This was a cross-sectional study. AV specimens of dialysis patients (median vintage: 8.8 years) consecutively collected from cardiac surgeries (n = 56) or autopsies (n = 13) were examined by a board-certified pathologist blinded to clinical data. DAs were considered to be present if deposits were stained both by Congo red with apple-green birefringence under polarized light and by anti-β2-microblobulin antibody. Degree of deposition was graded as follows: Amyloid (-), no deposit; Amyloid (1+), occasional small deposits; Amyloid (2+), multiple small to large deposits or a single large deposit. Calcification was defined as a calcified deposit with a diameter >1 mm in the specimen. Severe AS (sAS) was defined as a mean gradient >50 mm Hg by echocardiogram. We examined the proportion of DAs and the association between DAs and the sAS.
Results: DAs were present in 71% (n = 49) of specimens and primarily co-localized with calcification. Non-dialysis related amyloid was found in one specimen. After excluding this specimen, sAS was associated with ‘Amyloid (1+) and Calcification >1 mm' and ‘Amyloid (2+) and Calcification >1 mm' (vs. ‘Amyloid (-) and Calcification ≤1 mm', odds ratios (ORs): 13.5 and 34.2, respectively). Furthermore, after adjustment for covariates, sAS was found to be associated with ‘Amyloid (2+) and Calcification >1 mm' (OR: 24.3).
Conclusions: DA deposition in the AV was prevalent among dialysis patients. DA deposition with accompanying calcification might contribute to the severity of AS.

DOI： 10.1159/000381938

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記述言語：英語   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

Background: Cardiovascular disease is a frequent cause of death in peritoneal dialysis patients. Biocompatible peritoneal dialysis solutions with neutral pH have been anticipated to reduce cardiovascular disease more than conventional peritoneal dialysis solutions with low pH, but it remains unclear which factors at peritoneal dialysis initiation increase cardiovascular risk in patients using biocompatible peritoneal dialysis solutions. This study was undertaken to investigate which clinical factors at peritoneal dialysis initiation, including peritoneal transport status, are associated with cardiovascular event in patients using biocompatible peritoneal dialysis solution.
Methods: This retrospective cohort study of peritoneal dialysis patients using biocompatible solutions with neutral pH assessed relations of clinical parameters at peritoneal dialysis initiation to cardiovascular event during the subsequent five years.
Results: Of 102 patients who started peritoneal dialysis, cardiovascular event occurred in 18. Age, history of cardiovascular disease before peritoneal dialysis initiation, hemoglobin, serum albumin, C-reactive protein, peritoneal permeability defined by the ratio of dialysate to plasma creatinine concentration at 4 hr (D/Pcre) in peritoneal equilibration test (PET), number of patients in each PET category defined by D/Pcre, and peritoneal protein clearance significantly differed between patients with and without cardiovascular event. For patients divided according to PET category using Kaplan-Meier method, the group of high average to high peritoneal transporters exhibited significantly high incidence of cardiovascular event and mortality compared with the groups of low and low-average peritoneal transporters (Log rank; p=0.0003 and 0.005, respectively). A Cox proportional hazards model showed independent association of PET category classification with cardiovascular event.
Conclusions: Peritoneal permeability expressed as PET category at peritoneal dialysis initiation is an independent cardiovascular risk factor in peritoneal dialysis patients using biocompatible peritoneal dialysis solution with neutral pH. Greater peritoneal permeability at peritoneal dialysis initiation might reflect subclinical vascular disorders.

添付ファイル： Hamasaki Y, Tanaka M, et al. CV risk and peritoneal permeability BMC Nephrol2014.pdf

DOI： 10.1186/1471-2369-15-173

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その他リンク： http://link.springer.com/article/10.1186/1471-2369-15-173/fulltext.html

掲載種別：研究論文（学術雑誌）   出版者・発行元：Japanese Society of Internal Medicine  

The acute onset of idiopathic nephrotic syndrome (NS) is often accompanied by acute kidney injury, which can lead to congestive heart failure and lung edema. In this report, we present two cases of NS-induced acute kidney injury successfully treated with a low dose of carperitide, a human atrial natriuretic peptide. In combination with standard diuretic therapy and immunotherapy, carperitide retained the renal function and spared the need for renal replacement therapy, including hemodialysis. Although further investigation in clinical trials is required to validate these findings, carperitide may be useful for maintaining the renal function in cases of NS-induced acute kidney injury.

DOI： 10.2169/internalmedicine.53.1724

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掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

DOI： 10.3747/pdi.2012.00212

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.3747/pdi.2012.00212

掲載種別：研究論文（学術雑誌）   出版者・発行元：Dustri-Verlgag Dr. Karl Feistle  

A 44-year-old man with a 17-year history of Crohn's disease (CD) was referred to our nephrology department on suspicion of drug-induced nephrotoxicity. Over the preceding 18 months, he had slowly progressive renal insufficiency with slight urinary abnormalities. His disease activity had been well controlled up to that point with 5-aminosalicylic acid and azathiopurine. Laboratory examination revealed slight proteinuria without hematuria and an elevated serum creatinine level of 1.4 mg/dl. Pathological examination revealed amyloid A (AA) deposition in the kidney, predominantly in the arterial and arteriolar walls with little to none in the glomerular capillaries. AA amyloidosis is typically accompanied by glomerular amyloid deposition and massive proteinuria. In the present case, however, vascular amyloid deposition was predominant, and the renal function was deteriorated with slight urinary abnormalities. The present case confirmed the importance of conducting a definitive pathological diagnosis of renal insufficiency in CD patients.

DOI： 10.5414/cn107151

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記述言語：日本語   出版者・発行元：(株)日本臨床社  

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担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/j.1440-1797.2012.01609.x

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掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

DOI： 10.3747/pdi.2011.00301

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.3747/pdi.2011.00301

担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

DOI： 10.1111/j.1744-9987.2011.01041.x

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

添付ファイル： Kurita N, Tanaka M, et al. Glomerular light chain in Myeloma case. KI2011.pdf

DOI： 10.1038/ki.2011.342

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記述言語：英語   掲載種別：研究論文（学術雑誌）  

DOI： 10.1007/s10157-011-0484-3

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その他リンク： http://link.springer.com/article/10.1007/s10157-011-0484-3/fulltext.html

担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：SAGE Publications  

DOI： 10.3747/pdi.2010.00273

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その他リンク： http://journals.sagepub.com/doi/full-xml/10.3747/pdi.2010.00273

記述言語：日本語   出版者・発行元：(一社)日本腎臓学会  

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記述言語：日本語   出版者・発行元：(一社)日本腎臓学会  

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記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：The Japanese Society of Internal Medicine  

1 型糖尿病の 60 歳男性．IgG4 関連硬化性疾患による後腹膜線維症，同リンパ節腫脹，硬化性唾液腺炎のため経過観察していたが，血清総蛋白の上昇，腎機能障害と共に全身倦怠感，口渇が出現・増悪した．中枢性副腎不全，中枢性尿崩症を呈しており頭部MRIで下垂体炎を認めた．IgG4 関連硬化性疾患による一連の病変でありステロイドが著効した．IgG4 関連硬化性疾患による下垂体炎の貴重な症例を経験したので報告する．

DOI： 10.2169/naika.100.1044

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00368341166?from=CiNii

掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Arteriovenous dialysis access may impose a burden on the cardiac system. The objective of this study is to examine the usefulness of access closure in hemodialysis patients with refractory heart failure and to identify possible factors associated with symptomatic improvements. The study population comprised 33 hemodialysis patients with symptomatic heart failure (New York Heart Association [NYHA] class ≥ II), who underwent arteriovenous access closure (30 fistulas and three grafts) between 1991 and 2008. In all patients, heart failure was refractory to all possible medical and surgical treatments, and persisted after optimal dry weight control. First, short-term changes in hemodynamics, clinical symptoms and echocardiographic morphology were examined. Second, clinical and echocardiographic parameters were compared between responders (N=23), who demonstrated NYHA class improvement after access closure, and non-responders (N=10). After access closure, systolic blood pressure rose and the heart rate decreased significantly. Body weight and echocardiographic parameters did not change significantly. Twenty-three patients (70%) demonstrated NYHA class improvement and were designated as responders. In responders, the duration from access creation to closure was significantly shorter and fewer had ischemic heart disease, compared with non-responders. Access flow, cardiac output and ejection fraction were comparable between the two groups. Although the five-year survival was 20.2% in all patients, responders showed better early survival than non-responders. Arteriovenous access closure improved clinical symptoms in 70% of patients with refractory heart failure. This improvement was especially likely to be achieved in patients without ischemic heart disease and those who developed heart failure within a relatively short time after access creation.

DOI： 10.1111/j.1744-9987.2010.00907.x

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担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：Hindawi Limited  

Predominant or codominant immunoglobulin (Ig) A deposition in the glomerular mesangium characterizes IgA nephropathy (IgAN). Accumulated glomerular IgA is limited to the IgA1 subclass and usually galactose-deficient. This underglycosylated IgA may play an important role in the pathogenesis of IgAN. Recently, antibodies against galactose-deficient IgA1 were found to be well associated with the development of IgAN. Several therapeutic strategies based on corticosteroids or other immunosuppressive agents have been shown to at least partially suppress the progression of IgAN. On the other hand, several case reports of kidney transplantation or acquired IgA deficiency uncovered a remarkable ability of human kidney to remove mesangial IgA deposition, resulting in the long-term stabilization of kidney function. Continuous exposure to circulating immune complexes containing aberrantly glycosylated IgA1 and sequential immune response seems to be essential in the disease progression of IgAN. Removal of mesangial IgA deposition may be a challenging, but fundamental approach in the treatment of IgAN.

添付ファイル： Tanaka M, Seki G, et al. IgAN Review. ClinDevImmunol2011.pdf

DOI： 10.1155/2011/470803

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その他リンク： http://downloads.hindawi.com/journals/jir/2011/470803.xml

掲載種別：研究論文（学術雑誌）  

多中心性 Castleman 病の経過中に進行性腎障害，メサンギウム増殖性腎炎を認め，IgA 腎症と診断した症例を経験した。症例は 47 歳，男性，36 歳時に健康診断で高蛋白血症を指摘された後，全身リンパ節腫脹，血尿・蛋白尿，腎機能障害が出現した。41 歳時，リンパ節生検を施行したところ，濾胞間に血管増生が優位でない形質細胞の増殖を認め，多中心性 Castleman 病（形質細胞型）と診断した。ステロイドパルス療法にてリンパ節腫脹の縮小と腎機能改善を認めたが，ステロイド減量中に再度腎機能が増悪したため，47 歳時に腎臓内科に紹介され腎生検を施行。半月体を伴う活動性の高い IgA 腎症に，形質細胞浸潤主体の軽度尿細管間質性腎炎を合併していた。ステロイドパルス療法にて，腎機能の軽度改善と血尿・蛋白尿の減少を認めた。Castleman 病と IgA 腎症の合併が稀であること，また尿所見・腎機能障害の程度が Castleman 病の活動性と比例しており，Castleman 病で過剰産生された IL－6 が IgA 腎症の病勢に関与している可能性があることから，示唆に富む症例と考え報告する。

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記述言語：日本語   出版者・発行元：The Japanese Society for Dialysis Therapy  

34歳，男性．1型糖尿病による腎不全のため，2008年4月腹膜透析（peritoneal dialysis：PD）導入し，マニュアル接続によるダブルバッグシステムにて夜間間欠的腹膜透析（nocturnal intermittent peritoneal dialysis：NIPD）を施行していた．2009年1月22日腹痛・下痢・嘔吐・PD排液混濁を認め受診．来院時体温37.4℃，腹膜刺激症状あり，WBC 12,800/μL，CRP 1.1mg/dL，PD排液WBC 2,500/μLと上昇しており，腹膜炎と診断した．セファゾリン（CEZ），セフタジジム（CAZ）の腹腔内あるいは静脈内投与8日間に加え，セフォチアム（CTM）経口投与を6日間施行したところ，腹膜炎は治癒し，現在まで再発は認められていない．PD液からはNeisseria subflavaが検出され，起因菌と考えられた．分離菌はCEZ，CAZ，CTMに感受性であった． Neisseria subflavaは口腔内常在菌で，まれに心内膜炎，髄膜炎などの起因菌となる．PD患者のNeisseria腹膜炎も少数ながら報告されており，腎不全以外に合併症のない症例でも発症している．本症例は糖尿病患者の感染脆弱性，およびバッグ交換時のマスク非着用がリスクと考えられ，感染経路は飛沫による経カテーテルと推察された．マスク着用による，バッグ交換時の飛沫感染予防の重要性が再確認された．

DOI： 10.4009/jsdt.44.319

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その他リンク： https://jlc.jst.go.jp/DN/JALC/00369124317?from=CiNii

担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：Elsevier BV  

We report a case of Churg-Strauss syndrome coexistent with coronary vasospasm and pauci-immune necrotizing crescentic glomerulonephritis. A 54-year-old man with bronchial asthma and allergic rhinitis was admitted to our hospital because of acute coronary syndrome. Angiography showed diffuse coronary artery spasm without anatomic stenosis. Acute coronary syndrome due to vasospasm was diagnosed. However, subsequent administration of vasodilators did not suppress angina symptoms. In addition, marked eosinophilia, eosinophilic pneumonitis, chronic sinusitis, pericardial effusion, and slight hematuria with red blood cell casts were detected. Although kidney function was normal, a kidney biopsy showed necrotizing crescentic glomerulonephritis with eosinophilic infiltration in both glomeruli and interstitium. With the diagnosis of Churg-Strauss syndrome, oral prednisolone at a dose of 60 mg/d was administered. Cardiac symptoms, pulmonary and sinonasal lesions, pericardial effusion, and urine sediment resolved rapidly. Six months later, a repeated kidney biopsy showed remarkable improvement and no eosinophilic infiltration. Coronary vasospasm with eosinophilia might be refractory to vasodilators and sensitive to corticosteroid therapy and often has been related to Churg-Strauss syndrome. Slight abnormalities in urine sediment can be the clue to the diagnosis of severe kidney involvement of Churg-Strauss syndrome.

DOI： 10.1053/j.ajkd.2010.03.011

PubMed

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担当区分：筆頭著者,　責任著者   掲載種別：研究論文（学術雑誌）   出版者・発行元：Springer Science and Business Media LLC  

We report a case of Henoch-Schönlein purpura nephritis (HSPN) with acquired IgA deficiency due to parvovirus B19 infection. The patient was diagnosed as having Henoch-Schönlein purpura (HSP) at 6 years old, and subsequently developed macrohematuria and massive proteinuria of 7.4 g/day with decreased creatinine clearance of 70.2 ml/min/1.73 m(2) and significantly elevated serum IgA level of 449 mg/dl. The first kidney biopsy yielded the diagnosis of severe HSPN. After the initiation of the immunosuppressive therapy, the patient was infected with parvovirus B19 and developed virus-associated hemophagocytic syndrome (VAHS). Thereafter, the serum level of IgA selectively decreased and remained undetectable until the present time. Repeated kidney biopsies performed over a period of 14 years revealed a remarkable histological improvement in association with stabilization of the patient's kidney function. Considering the severity of initial kidney injury, persistent acquired IgA deficiency was likely to add favorable effects to the immunosuppressive therapy in this patient with HSPN.

DOI： 10.1007/s00467-010-1568-0

PubMed

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その他リンク： http://link.springer.com/article/10.1007/s00467-010-1568-0/fulltext.html

掲載種別：研究論文（学術雑誌）  

Objective: Familiar Mediterranean Fever (FMF) is common among Mediterranean populations, while other populations are rarely affected. The aim of this study was to assess the involvement of MEFV gene mutations among Japanese rheumatoid arthritis patients with or without amyloid A (AA) amyloidosis.

Methods: The frequency of the MEFV mutations, which were identified in Japanese FMF patients, was determined in 126 Japanese RA patients and 76 Japanese healthy subjects.

Results: The M694I mutation was not observed among RA patients and healthy subjects. Allele frequency of R408Q, P369S, E148Q, L110P mutations account respectively for 3.3%, 3.9%, 23.7%, 9.2% in healthy subjects and 5.6%, 6.7%, 24.2%, 9.5% in RA patients. The overall mutation rate was comparable between the RA patients and healthy subjects, as well as between the RA patients with and without amyloidosis.

Conclusion: This study shows the high prevalence of mutations of the MEFV genes in Japanese RA patients. However, our data suggest that the MEFV gene mutations may not be a genetic factor affecting the susceptibility of RA or the development of amyloidosis in a Japanese population.

PubMed

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掲載種別：研究論文（学術雑誌）   出版者・発行元：Wiley  

Familial Mediterranean fever (FMF) is a hereditary syndrome characterized by recurrent episodes of fever and serositis. In this report, we describe a Japanese patient with FMF and Sjögren's syndrome, in whom acute elevations of transaminase occurred. The histological findings from the liver biopsy specimens demonstrated a nonspecific hepatitis, with liver cell necrosis and interlobular inflammatory cell invasion, without the presence of interface hepatitis or bile duct injury. This case underscores the possibility that MEFV mutations contribute to hepatic inflammation, as seen in this case, by way of an alteration of the pyrin function.

DOI： 10.1111/j.1478-3231.2007.01598.x

PubMed

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担当区分：筆頭著者   記述言語：日本語   掲載種別：研究論文（学術雑誌）   出版者・発行元：九州リウマチ学会  

症例は57歳、女性。2年前より気管支喘息で加療をうけていたが、2006年4月上旬、両下腿の腫脹が出現し、その後、比較的急速に歩行障害と両下肢痛が出現して進行を認めたため、当科緊急入院となった。入院後、気管支喘息の既往、好酸球増多、多発性単神経炎の所見、およびMPO-ANCA強陽性からChurg-Strauss Syndrome(CSS)と診断した。ステロイドパルス療法を施行したところ、好酸球増多、MPO-ANCA高値などの所見は速やかに改善したが、神経症状の改善には2ヵ月を要した。治療経過中に認めたリンパ球増加の原因検索で施行した、ヒト全血Epstein-Barr virus(EBV)-DNA定量リアルタイムPCRにてEBVの増加を認めたため、更なる免疫抑制は行わず経過を観察したところ、EBVウイルス量の低下および神経症状の改善が認められた。CSSなどの血管炎の免疫抑制療法中には、日和見感染を起こすことがあり、しばしば致命的となりうるため、各種免疫抑制療法の適応を慎重に検討し治療を行う必要があると考えられた。(著者抄録)

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担当区分：筆頭著者   掲載種別：研究論文（学術雑誌）  

PubMed

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総ページ数：xiv, 252p   記述言語：日本語

CiNii Books

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総ページ数：x, 468p   記述言語：日本語

CiNii Books

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総ページ数：249p   記述言語：日本語

CiNii Books

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総ページ数：31, 560p   記述言語：日本語

CiNii Books

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J-GLOBAL

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記述言語：日本語   出版者・発行元：大道学館出版部  

CiNii Article

CiNii Books

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その他リンク： http://search.jamas.or.jp/link/ui/2013304960

記述言語：日本語   出版者・発行元：(一社)日本透析医学会  

J-GLOBAL

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記述言語：英語   掲載種別：研究発表ペーパー・要旨（国際会議）   出版者・発行元：OXFORD UNIV PRESS  

Web of Science

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J-GLOBAL

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記述言語：日本語   出版者・発行元：臨床体液研究会  

62歳男。虚血性心疾患(3枝病変)に対し冠動脈バイパス術を施行後、経皮的冠動脈形成術を2回施行した。血漿レニン活性(PRA)、血漿アルドステロン(PAC)が高値で、二次性高血圧を疑われていた。気管支炎を契機に心不全が増悪し緊急入院となった。BNPは著明高値で、心陰影拡大と肺うっ血を認めた。心工コーでは左室収縮能が低下していた。軽度腎機能障害と低K血症とともに、PRAとPACが高値であったため、腎動脈狭窄症を疑った。腎動脈造影にて左腎動脈入口部に99%狭窄病変を確認した。血管造影上70%以上狭窄を有し、進行性、治療抵抗性高血圧症を呈しているため、経皮的腎動脈形成術(PTRA)を施行した。PTRA後、収縮期血圧は110mmHgまで下降し、低K血症、心磯能ともに改善、BNPは低下し、心不全症状も軽快した。

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J-GLOBAL

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記述言語：日本語   出版者・発行元：(一社)日本腎臓学会  

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記述言語：日本語   出版者・発行元：(株)日本メディカルセンター  

血液透析が循環に及ぼす影響の二つの側面は,一つは動静脈を短絡するバスキュラー・アクセス(VA)が心機能に及ぼす影響であり,もう一つは除水を中心とする透析処置そのものである.VAの作製と修復に関しては,患者の心機能に応じて,内シャントやシャントグラフトの選択の是非を判断する必要がある.時に,シャント血流の遮断とVAの変更を考慮する必要がある.心機能障害のある患者で,丸2日蓄積した体液量を4時間で除去する治療が安全であるためには,食事管理の正確性が求められる.基礎疾患の治療など心機能保持の治療とともに,透析方法の評価と選択,通院の介助などの考慮が必要である.(著者抄録)

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記述言語：日本語   出版者・発行元：(一社)日本リウマチ学会  

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