研究者詳細 - 小野寺　理

論文 - 小野寺　理

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The optineurin/TIA1 pathway inhibits aberrant stress granule formation and reduces ubiquitinated TDP-43. 国際誌

Taichi Kakihana, Masahiko Takahashi, Yoshinori Katsuragi, Shun-Ichi Yamashita, Junya Sango, Tomotake Kanki, Osamu Onodera, Masahiro Fujii

iScience 24 ( 7 ) 102733 - 102733 2021年7月

記述言語：英語掲載種別：研究論文（学術雑誌）

Amyotrophic lateral sclerosis (ALS) is a degenerative motor neuron disease characterized by the formation of cytoplasmic ubiquitinated TDP-43 protein aggregates in motor neurons. Stress granules (SGs) are stress-induced cytoplasmic protein aggregates containing various neuropathogenic proteins, including TDP-43. Several studies have suggested that SGs are the initial site of the formation of pathogenic ubiquitinated TDP-43 aggregates in ALS neurons. Mutations in the optineurin (OPTN) and TIA1 genes are causative factors of familial ALS with TDP-43 aggregation pathology. We found that both OPTN depletion and ALS-associated OPTN mutations upregulated the TIA1 level in cells recovered from heat shock, and this upregulated TIA1 increased the amount of ubiquitinated TDP-43. Ubiquitinated TDP-43 induced by OPTN depletion was localized in SGs. Our study suggests that ALS-associated loss-of-function mutants of OPTN increase the amount of ubiquitinated TDP-43 in neurons by increasing the expression of TIA1, thereby promoting the aggregation of ubiquitinated TDP-43.

DOI： 10.1016/j.isci.2021.102733

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Correction to: A novel splicing variant of ANXA11 in a patient with amyotrophic lateral sclerosis: histologic and biochemical features. 国際誌

Makoto Sainouchi, Yuya Hatano, Mari Tada, Tomohiko Ishihara, Shoichiro Ando, Taisuke Kato, Jun Tokunaga, Gaku Ito, Hiroaki Miyahara, Yasuko Toyoshima, Akio Yokoseki, Tetsutaro Ozawa, Kohei Akazawa, Osamu Onodera, Akiyoshi Kakita

Acta neuropathologica communications 9 ( 1 ) 115 - 115 2021年6月

A novel splicing variant of ANXA11 in a patient with amyotrophic lateral sclerosis: histologic and biochemical features. 国際誌

Acta neuropathologica communications 9 ( 1 ) 106 - 106 2021年6月

Selective Synthesis of Acylated Cross-Benzoins from Acylals and Aldehydes via N-Heterocyclic Carbene Catalysis. 国際誌

Kou Onodera, Ryo Takashima, Yumiko Suzuki

Organic letters 23 ( 11 ) 4197 - 4202 2021年6月

記述言語：英語掲載種別：研究論文（学術雑誌）

The utility of acylals as building blocks for selective cross-benzoin synthesis was explored in this study. The synthesis of α-acetoxyketones (O-acyl cross-benzoins) was achieved via selective N-heterocyclic carbene-catalyzed cross-benzoin reactions using acylals as aldehyde equivalents. Thus, the combination of ortho-substituted phenyl acylals and aromatic/aliphatic aldehydes as coupling substrates using bicyclic triazolium salts as precatalysts and potassium carbonate as a base in THF at reflux temperature selectively yielded O-acyl cross-benzoins.

DOI： 10.1021/acs.orglett.1c01134

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Cytosolic dsDNA of mitochondrial origin induces cytotoxicity and neurodegeneration in cellular and zebrafish models of Parkinson's disease. 国際誌

Hideaki Matsui, Junko Ito, Noriko Matsui, Tamayo Uechi, Osamu Onodera, Akiyoshi Kakita

Nature communications 12 ( 1 ) 3101 - 3101 2021年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

Mitochondrial dysfunction and lysosomal dysfunction have been implicated in Parkinson's disease (PD), but the links between these dysfunctions in PD pathogenesis are still largely unknown. Here we report that cytosolic dsDNA of mitochondrial origin escaping from lysosomal degradation was shown to induce cytotoxicity in cultured cells and PD phenotypes in vivo. The depletion of PINK1, GBA and/or ATP13A2 causes increases in cytosolic dsDNA of mitochondrial origin and induces type I interferon (IFN) responses and cell death in cultured cell lines. These phenotypes are rescued by the overexpression of DNase II, a lysosomal DNase that degrades discarded mitochondrial DNA, or the depletion of IFI16, which acts as a sensor for cytosolic dsDNA of mitochondrial origin. Reducing the abundance of cytosolic dsDNA by overexpressing human DNase II ameliorates movement disorders and dopaminergic cell loss in gba mutant PD model zebrafish. Furthermore, IFI16 and cytosolic dsDNA puncta of mitochondrial origin accumulate in the brain of patients with PD. These results support a common causative role for the cytosolic leakage of mitochondrial DNA in PD pathogenesis.

DOI： 10.1038/s41467-021-23452-x

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Differences in the isotopic signature of activated sludge in four types of advanced treatment processes at a municipal wastewater treatment plant. 国際誌

Takashi Onodera, Kazuhiro Komatsu, Ayato Kohzu, Gen Kanaya, Motoyuki Mizuochi, Kazuaki Syutsubo

Journal of environmental management 286 112264 - 112264 2021年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

The natural abundance of stable isotopes is a powerful tool for evaluating biological reactions and process conditions. However, there are few stable isotope studies on the wastewater treatment process. This study carried out the first investigation on variations in natural abundance of carbon and nitrogen stable isotope ratios (δ13C and δ15N) of activated sludge in four types of advanced treatment process (extended aeration activated sludge (EAAS), aerobic-anoxic-aerobic (A2O), recycled nitrification-denitrification (RND), and modified Bardenpho (MB)) at a municipal wastewater treatment plant. The δ13C and δ15N values of influent suspended solids settled in the primary sedimentation tank (i.e., primary sludge) ranged from -25.4‰ to -24.6‰ and 0.5‰-2.9‰, respectively, during monitoring periods. The δ13C values of the activated sludge were -24.6‰ to -23.6‰ (EAAS), -25.4‰ to -24.3‰ (A2O), -25.7‰ to -24.9‰ (RND), and -25.7‰ to -24.3‰ (MB). The δ13C values of the activated sludge were similar to those of influent suspended solids. However, the δ13C values of activated sludge in EAAS was significantly higher than in A2O, RND, and MB. Meanwhile, the δ15N values of activated sludge were obviously higher than influent suspended solids; 5.8‰-7.5‰ (EAAS), 6.6‰-8.1‰ (A2O), 5.5‰-7.5‰ (RND), and 5.3‰-7.6‰ (MB). Changes in δ13C and δ15N values of the activated sludge within the treatment system were also found. These findings indicate that changes in δ13C and δ15N values of the activated sludge rely on important function for biological wastewater treatment such as nitrification, denitrification, and methane oxidation through wastewater treatment over time.

DOI： 10.1016/j.jenvman.2021.112264

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Evaluation of stable isotope ratios (δ15N and δ18O) of nitrate in advanced sewage treatment processes: Isotopic signature in four process types. 国際誌

Takashi Onodera, Kazuhiro Komatsu, Ayato Kohzu, Gen Kanaya, Motoyuki Mizuochi, Kazuaki Syutsubo

The Science of the total environment 762 144120 - 144120 2021年3月

記述言語：英語掲載種別：研究論文（学術雑誌）

Stable isotope ratios of nitrate are a powerful tool to evaluate aquatic environment stress from treated and untreated sewage. However, there is generally a lack of knowledge on the change in stable isotope ratios within wastewater treatment plants. We investigated nitrogen and oxygen stable isotope ratios (δ15N and δ18O) of nitrate in four types of advanced treatment processes operated in parallel; (A) extended aeration activated sludge, (B) anaerobic-anoxic-aerobic (A2O), (C) recycled nitrification-denitrification, and (D) modified Bardenpho. The results exhibited spatial variation of δ15N and δ18O for nitrate within the treatment steps. The changes in δ15N and δ18O may result from the reactor conditions (aerobic, anoxic, and anaerobic) and the order of these processes. As decreasing nitrate concentration in the anoxic stages, the δ15N/δ18O ratio for nitrate increased at a rate of 1.3 to 1.6 coupling with the reduction in the nitrate concentration in the anoxic stages. The δ15N and δ18O signatures were attributed to process performance in regard to nitrogen removal. In particular, the modified Bardenpho process has higher nitrogen removal efficiency over other processes, producing effluent with lower nitrate concentration and higher stable isotopes (δ15N: 23.6 to 25.5‰, δ18O: 2.8 to 4.5‰). We concluded that the stable isotope signatures mirrored the treatment efficiency and effluent characteristics.

DOI： 10.1016/j.scitotenv.2020.144120

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Heterozygous Cysteine-sparing NOTCH3 Variant p.Val237Met in a Japanese Patient with Suspected Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy: A Case Report.

Yuya Kano, Ikuko Mizuta, Akihiko Ueda, Hiroaki Nozaki, Keita Sakurai, Osamu Onodera, Yukio Ando, Kentaro Yamada, Hiroyuki Yuasa, Toshiki Mizuno

Internal medicine (Tokyo, Japan) 60 ( 15 ) 2479 - 2482 2021年3月

記述言語：英語掲載種別：研究論文（学術雑誌）

A 64-year-old Japanese man with recurrent cerebral ischemic events and cognitive impairment was suspected of having cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) because of a family history and brain magnetic resonance imaging findings of cerebral white matter hyperintensities. The cysteine-sparing variation p.Val237Met was identified in NOTCH3. An intensive skin biopsy showed negative results (no granular osmiophilic material or positive NOTCH3 immunostaining), suggesting that the patient's definite diagnosis and pathogenicity of p.Val237Met were uncertain. We additionally reviewed previous reports of two Japanese families with p.Val237Met.

DOI： 10.2169/internalmedicine.6096-20

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Progressive micrographia without parkinsonism caused by autoimmune brainstem encephalitis: A case report. 国際誌

Ryutaro Hanyu, Masahiro Hatakeyama, Masaki Namekawa, Yutaka Otsu, Mayura Sukegawa, Hiromi Hashida, Izumi Kawachi, Masato Kanazawa, Osamu Onodera

Clinical neurology and neurosurgery 202 106496 - 106496 2021年3月

頸椎除圧術後の上肢型筋萎縮索硬化症の臨床経過

五十嵐哲也, 渡辺慶, 大橋正幸, 川島寛之, 三瓶一弘, 五十嵐修一, 黒羽泰子, 小池亮子, 石原智彦, 大津裕, 小野寺理

日本整形外科学会雑誌 95 ( 2 ) S112 - S112 2021年3月

Genetic Variations and Neuropathologic Features of Patients With PRKN Mutations. 国際誌

Naohiko Seike, Akio Yokoseki, Ryoko Takeuchi, Kento Saito, Hiroaki Miyahara, Akinori Miyashita, Tetsuhiko Ikeda, Izumi Aida, Takashi Nakajima, Masato Kanazawa, Masatoshi Wakabayashi, Yasuko Toyoshima, Hitoshi Takahashi, Riki Matsumoto, Tatsushi Toda, Osamu Onodera, Atsushi Ishikawa, Takeshi Ikeuchi, Akiyoshi Kakita

Movement disorders : official journal of the Movement Disorder Society 36 ( 7 ) 1634 - 1643 2021年2月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Mutations in PRKN are the most common cause of autosomal recessive juvenile parkinsonism. The objective of this study was to investigate the association between genotype and pathology in patients with PRKN mutations. METHODS: We performed a sequence and copy number variation analysis of PRKN, mRNA transcripts, Parkin protein expression, and neuropathology in 8 autopsied patients. RESULTS: All the patients harbored biallelic PRKN mutations. Two patients were homozygous and heterozygous, respectively, for the missense mutation p.C431F. Seven patients had exon rearrangements, including 2 patients from a single family who harbored a homozygous deletion of exon 4, and 3 patients who carried a homozygous duplication of exons 6-7, a homozygous duplication of exons 10-11, and a heterozygous duplication of exons 2-4. In the other 2 patients, we found a compound heterozygous duplication of exon 2, deletion of exon 3, and a heterozygous duplication of exon 2. However, sequencing of cDNA prepared from mRNA revealed 2 different transcripts derived from triplication of exon 2 and deletion of exons 2-3 and from duplication of exons 2-4 and deletion of exons 3-4. Western blotting and immunohistochemistry revealed faint or no expression of Parkin in their brains. In the substantia nigra pars compacta, a subfield-specific pattern of neuronal loss and mild gliosis were evident. Lewy bodies were found in 3 patients. Peripheral sensory neuronopathy was a feature. CONCLUSIONS: Genomic and mRNA analysis is needed to identify the PRKN mutations. Variable mutations may result in no or little production of mature Parkin and the histopathologic features may be similar.

DOI： 10.1002/mds.28521

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Corrigendum: HTRA1 Mutations Identified in Symptomatic Carriers Have the Property of Interfering the Trimer-Dependent Activation Cascade. 国際誌

Masahiro Uemura, Hiroaki Nozaki, Akihide Koyama, Naoko Sakai, Shoichiro Ando, Masato Kanazawa, Taisuke Kato, Osamu Onodera

Frontiers in neurology 12 756038 - 756038 2021年

Strategies to prevent hemorrhagic transformation after reperfusion therapies for acute ischemic stroke: A literature review. 国際誌

Yutaka Otsu, Masaki Namekawa, Masafumi Toriyabe, Itaru Ninomiya, Masahiro Hatakeyama, Masahiro Uemura, Osamu Onodera, Takayoshi Shimohata, Masato Kanazawa

Journal of the neurological sciences 419 117217 - 117217 2020年12月

記述言語：英語掲載種別：研究論文（学術雑誌）

BACKGROUND: Reperfusion therapies by tissue plasminogen activator (tPA) and mechanical thrombectomy (MT) have ushered in a new era in the treatment of acute ischemic stroke (AIS). However, reperfusion therapy-related HT remains an enigma. AIM: To provide a comprehensive review focused on emerging concepts of stroke and therapeutic strategies, including the use of protective agents to prevent HT after reperfusion therapies for AIS. METHODS: A literature review was performed using PubMed and the ClinicalTrials.gov database. RESULTS: Risk of HT increases with delayed initiation of tPA treatment, higher baseline glucose level, age, stroke severity, episode of transient ischemic attack within 7 days of stroke onset, and hypertension. At a molecular level, HT that develops after thrombolysis is thought to be caused by reactive oxygen species, inflammation, remodeling factor-mediated effects, and tPA toxicity. Modulation of these pathophysiological mechanisms could be a therapeutic strategy to prevent HT after tPA treatment. Clinical mechanisms underlying HT after MT are thought to involve smoking, a low Alberta Stroke Program Early CT Score, use of general anesthesia, unfavorable collaterals, and thromboembolic migration. However, the molecular mechanisms are yet to be fully investigated. Clinical trials with MT and protective agents have also been planned and good outcomes are expected. CONCLUSION: To fully utilize the easily accessible drug-tPA-and the high recanalization rate of MT, it is important to reduce bleeding complications after recanalization. A future study direction could be to investigate the recovery of neurological function by combining reperfusion therapies with cell therapies and/or use of pleiotropic protective agents.

DOI： 10.1016/j.jns.2020.117217

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Progressive supranuclear palsy: Neuropathology of patients with a short disease duration due to unexpected death 国際誌

Lu Zhang, Yasuko Toyoshima, Akari Takeshima, Hiroshi Shimizu, Itsuro Tomita, Osamu Onodera, Hitoshi Takahashi, Akiyoshi Kakita

NEUROPATHOLOGY 41 ( 3 ) 174 - 182 2020年11月

Association between serum IgG antibody titers against Porphyromonas gingivalis and liver enzyme levels: A cross-sectional study in Sado Island. 国際誌

Kei Takamisawa, Noriko Sugita, Shigeki Komatsu, Minako Wakasugi, Akio Yokoseki, Akihiro Yoshihara, Tetsuo Kobayashi, Kazutoshi Nakamura, Osamu Onodera, Takeshi Momotsu, Naoto Endo, Kenji Sato, Ichiei Narita, Hiromasa Yoshie, Koichi Tabeta

Heliyon 6 ( 11 ) e05531 2020年11月

記述言語：英語掲載種別：研究論文（学術雑誌）

Background: Previous studies have reported associations between nonalcoholic fatty liver disease, periodontitis, and obesity. Serum immunoglobulin G (IgG) antibody titer against Porphyromonas gingivalis, a major pathogen of periodontitis, is an established indicator of periodontal infection. However, the relationship between the antibody titer and liver enzyme levels has not been clarified yet. A study in the elderly was needed to evaluate the effect of long-term persistent bacterial infection on liver function. The objective of this study was to investigate the association between liver function and infection by P. gingivalis, and the effect of obesity on the association. Methods: A cross-sectional study was conducted in adult outpatients visiting Sado General Hospital, in Niigata Prefecture, Japan, from 2008 to 2010. The final participants included 192 men and 196 women (mean age 68.1 years). Multivariable logistic regression analyses were performed to assess the association between the serum IgG antibody titer and the levels of aspartate aminotransferase (AST), alanine aminotransferase (ALT), and γ-glutamine transferase (GGT) levels. Results: In women, serum IgG antibody titers against P. gingivalis was associated with elevated ALT, but not with AST or GGT, independent of covariates (p = 0.015). No significant association was found between the antibody titer and the elevated liver enzymes in men. The effect of obesity on the relationship between antibody titer and liver enzyme levels was not statistically significant. Conclusions: A cross-sectional analysis of adult outpatients suggested an association between P. gingivalis infection and ALT levels in women. The effect of obesity on this association was not statistically significant.

DOI： 10.1016/j.heliyon.2020.e05531

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筋萎縮性側索硬化症の確定診断までの時間に与える、初診科、発症部位の検討

大津裕, 小池佑佳, 石原智彦, 小野寺理

臨床神経学 60 ( Suppl. ) S380 - S380 2020年11月