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Endoplasmic reticulum stress,autophagy,neuroinflammation,and sigma 1 receptors as contributors to depression and its treatment

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Neural Regeneration Research 2024年第10期19卷 2202-2211页

作者： Chika Fujii Charles F.Zorumski Yukitoshi izumi Department of Psychiatry Washington University School of MedicineSt.LouisMOUSA Taylor Family Institute for Innovative Psychiatric Research Washington University School of MedicineSt.LouisMOUSA

The etiological factors contributing to depression and other neuropsychiatric disorders are largely undefined. Endoplasmic reticulum stress pathways and autophagy are well-defined mechanisms that play critical functions in recognizing and resolving cellular stress and are possible targets for the pathophysiology and treatment of psychiatric and neurologic illnesses. An increasing number of studies indicate the involvement of endoplasmic reticulum stress and autophagy in the control of neuroinflammation, a contributing factor to multiple neuropsychiatric illnesses. Initial inflammatory triggers induce endoplasmic reticulum stress, leading to neuroinflammatory responses. Subsequently, induction of autophagy by neurosteroids and other signaling pathways that converge on autophagy induction are thought to participate in resolving neuroinflammation. The aim of this review is to summarize our current understanding of the molecular mechanisms governing the induction of endoplasmic reticulum stress, autophagy, and neuroinflammation in the central nervous system. Studies focused on innate immune factors, including neurosteroids with anti-inflammatory roles will be reviewed. In the context of depression, animal models that led to our current understanding of molecular mechanisms underlying depression will be highlighted, including the roles of sigma 1 receptors and pharmacological agents that dampen endoplasmic reticulum stress and associated neuroinflammation.

关键词： allopregnanolone fluvoxamine ketamine neurosteroids postpartum depression quercetin

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Glyphosate as a direct or indirect activator of pro-inflammatory signaling and cognitive impairment

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Neural Regeneration Research 2024年第10期19卷 2212-2218页

作者： Yukitoshi izumi Kazuko A.O'Dell Charles F.Zorumski Department of Psychiatry Washington University School of MedicineSt.LouisMOUSA Taylor Family Institute for Innovative Psychiatric Research Washington University School of MedicineSt.LouisMOUSA

Glyphosate-based herbicides are widely used around the world, making it likely that most humans have significant exposure. Because of habitual exposure, there are concerns about toxicity including neurotoxicity that could result in neurological, psychiatric, or cognitive impairment. We recently found that a single injection of glyphosate inhibits long-term potentiation, a cellular model of learning and memory, in rat hippocampal slices dissected 1 day after injection, indicating that glyphosate-based herbicides can alter cognitive function. Glyphosate-based herbicides could adversely affect cognitive function either indirectly and/or directly. Indirectly, glyphosate could affect gut microbiota, and if dysbiosis results in endotoxemia(leaky gut), infiltrated bacterial by-products such as lipopolysaccharides could activate pro-inflammatory cascades. Glyphosate can also directly trigger pro-inflammatory cascades. Indeed, we observed that acute glyphosate exposure inhibits long-term potentiation in rat hippocampal slices. Interestingly, direct inhibition of long-term potentiation by glyphosate appears to be similar to that of lipopolysaccharides. There are several possible measures to control dysbiosis and neuroinflammation caused by glyphosate. Dietary intake of polyphenols, such as quercetin, which overcome the inhibitory effect of glyphosate on long-term potentiation, could be one effective strategy. The aim of this narrative review is to discuss possible mechanisms underlying neurotoxicity following glyphosate exposure as a means to identify potential treatments.

关键词： cognitive impairment glyphosate microglia neuroinflammation roundup toll-like receptor 4 zinc chelation

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米饭的挥发性香味成分

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上海交通大学学报(农业科学版) 1988年第4期 363-364页

作者： izumi yajima Tetsuya Yanai Mikio Nakamura Hidemasa Sakakibara Tsutomu Habu 陈永清

本文研究了米饭的挥发性香味成分,并鉴定出100种成分:包括13种碳氢化合物;13种醇类;16种醛类;14种酮类;14种酸类;8种酯类;5种酚类;3种吡啶;6种吡嗪和8种其他化合物。其中92种米饭挥发性香味成分是最近鉴定的。

关键词：香味成分挥发性热物理性质化合物米饭

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A comparison of the efficacy of dutasteride on reducing lower urinary tract symptoms among patients with small versus large benign prostatic hyperplasia

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Current Urology 2024年第3期18卷 199-202页

作者： Kazuyoshi Shigehara Yuki Kato Shohei Kawaguchi Kouji izumi Yoshifumi Kadono Atsushi Mizokami Department of Urology Kanazawa University Graduate School of Medical ScienceKanazawaIshikawaJapan

Background Only a few reports have currently studied the efficacy of dutasteride in patients with small benign prostatic hyperplasia(BPH).We investigated the efficacy of dutasteride on reducing lower urinary tract symptoms among *** and methods A total of 81 patients with BPH who completed 52weeks of 0.5?mg dutasteride treatment were *** patient filled out the International Prostatic Symptom Score(IPSS)and overactive bladder symptom score(OABSS)at baseline and at the 6-and 12-month follow-up *** testosterone,prostate-specific antigen,adenoma/prostate volume(PV),uroflowmetry analysis,and postvoid residual volume were evaluated at baseline and at the 12-month follow-up *** enrolled patients were divided into 2 groups according to PV at *** groups were as follows:Group A(PV≥30 mL)and Group B(PV<30 mL).Results Groups A and B had mean PVs of 52.1 and 23.6 mL and mean IPSS scores of 16.7 and 14.4,*** A had significantly higher OABSS and prostate-specific antigen levels at baseline than Group B,while no significant differences in any other baseline characteristics was *** dutasteride treatment,adenoma volume and PV decreased significantly,while testosterone level showed a significant increase in both *** A showed significant improvements in the total IPSS,voiding and storage subscore of the IPSS,OABSS,maximum flow rate,and postvoid residual *** B,on the other hand,also showed significant improvements only in the total IPSS,voiding subscore of the IPSS,and maximum flow *** The present study suggests a possible beneficial effect of dutasteride treatment on the reduction of lower urinary tract symptoms in patients with small and large ***,the effectiveness of dutasteride was limited compared to patients with large BPH(PV≥30 mL).

关键词： Benign prostatic hyperplasia Dutasteride Lower urinary tract symptoms Testosterone Voiding dysfunction

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Perspectives of Science and Technology in Disaster Risk Reduction of Asia

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International Journal of Disaster Risk Science 2016年第4期7卷 329-342页

作者： Rajib Shaw Takako izumi Peijun Shi Integrated Research on Disaster Risks(IRDR) International Research Institute of Disaster Science(IRIDeS) Tohoku University State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University

Science and technology innovation has always been present in Asia,but its application in disaster risk reduction(DRR) has been *** Asia,globally significant hotspots of disasters and economic development have emerged in which the application of science and technology in DRR has become an essential requirement for informed decision *** has supported establishment and implementation of major international initiatives in DRR,including the Hyogo Framework for Action *** more recent Sendai Framework for DRR 2015-2030 recognizes the importance of science and technology in all of its priority action areas,and subsequent global and regional forums and conferences have reconfirmed science and technology's *** perceive and monitor the progress of science and technology in DRR,a qualitative assessment of different countries is made using three major attributes:(1) science-based decision making;(2) investment in science and technology;and(3) the intensity of science's link to the *** assessment exercise points out several strengths and weaknesses in science and technology application;the method can be employed to develop future multistakeholder and multidisciplinary science and technology plans at the country *** implement regional and national activities,a set of 15 recommendations is put forward,which will strengthen the collective regional "science voice" in DRR.

关键词： DRR policy making Science innovation Science investment Sendai Framework Technology application

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Fabrication of a model specimen for understanding micro-galvanic corrosion at the boundary ofα-Mg andβ-Mg17Al12

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Journal of Magnesium and Alloys 2023年第1期11卷 137-153页

作者： Zheng Shao Masashi Nishimoto izumi Muto Yu Sugawara Department of Materials Science Graduate School of EngineeringTohoku University6-6-02 Aza-AobaAramakiAoba-kuSendai 980-0579Japan

A model specimen with a single boundary of theα/βphase simulating Mg-Al alloys was successfully fabricated by spark plasma sintering.A small electrode area ofαphase orβphase was prepared using the model specimen,and the OCPs(open-circuit potentials)of each phase and a small electrode area containing theα/βphase boundary in 0.1 M NaCl at pH 8.0 were compared:theβphase exhibited a higher potential,and theαphase showed a lower *** OCP of the small area containing theα/βphase boundary was the intermediate value of these *** a small area containingα/βphase boundary,discoloration and gas bubbles were observed on theαphase,but no bubble generation was detected on theβ*** gas bubbles were initially generated on theαphase near theβphase,but as the discoloration(corrosion)of theαphase approached theβphase,the bubbles were generated on theβ*** micro-galvanic corrosion of theαandβphases,theβphase did not always function as the preferred ***αphase partially corroded(or discolored)and became the anodes,so that the surrounding areas were most likely to be the *** corroded areas(anodes)in theαphase approached theβphase,theβphase would become *** addition to the micro-galvanic corrosion mechanism,the role of Al in corrosion resistance at theα/βphase boundary was determined by surface analysis.

关键词： Magnesium alloy α/βphase boundary Micro-scale observation technique Micro-galvanic corrosion Spark plasma sintering

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Pharmacokinetics of paclitaxel in a hemodialysis patient with advanced gastric cancer: A case report

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World Journal of Gastroenterology 2006年第32期12卷 5237-5239页

作者： Susumu Kawate izumi Takeyoshi Yasuo Morishita Department of Thoracic and Visceral Organ Surgery Gunma University Graduate School of Medicine MaebashiGunma 371-8511Japan

We report for the first time the possibility of weekly paclitaxel chemotherapy for a patient with advanced, nonresectable gastric cancer undergoing hemodialysis. A 50-year-old man with chronic renal failure due to bilateral polycystic kidneys, who had undergone hemodialysis three times a week for 5 years, presented with hematemesis in December 2004. Based on the diagnosis of gastric cancer with lymph node metastases, surgery was performed. On the 15th postoperative day, the patient was treated with chemotherapy using paclitaxel. Paclitaxel was administered at a dose of 60 mg/m^2 as a 1 h iv infusion in 250 mL of saline. Hemodialysis was started 1 h after the completion of the paclitaxel infusion and was performed for 3 h. Paclitaxel was administered weekly on d 1, 8, and 15 on a 28-d cycle. The maximum plasma concentration of paclitaxel was 1390 μg/L. The area under the curve of paclitaxel was 4398.6 μg·h/L. Grade 2 leukopenia was encountered during the first cycle. The plasma concentrations of paclitaxel from 6 to over 24 h after the infusion were 0.01 to 0.1 μmol/L in our patient, and these concentrations have been shown to be effective on inhibiting the growth of gastric cancer cells without producing adverse side effects in the patient. The plasma concentration of paclitaxel was not influenced by hemodialysis. We conclude that the pharmacokinetics of paclitaxel is not altered in a patient with renal failure, and that weekly paclitaxel is a suitable treatment regimen for hemodialysis patients with advanced gastric cancer.

关键词： Paclitaxel Gastric cancer Hemodialysis

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Immediate-early Inducible Function in Upstream Region of junB Gene

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Biomedical and Environmental Sciences 2006年第3期19卷 210-213页

作者： HONG WAN HIROSHI ISHIHAR izumi TANAKA Beijing Neurosurgical Institute Beijing 100050 China National Institute of Radiological Sciences Chiba-shi 263-8555 Japan

Objective To analyze the upstream region of radiation-induced junB gene. Methods Four plasmids containing 250 bp, 590 bp, 900 bp and 1650 bp, and CAT reporter gene were constructed separately and introduced to L8704 cells. The cells were irradiated with 2 Gy X-rays and incubated at different intervals. Total RNA was extracted from the cells and fluctuation of the CAT mRNA level was assessed by the RNA ratio of CAT/β-actin measured by quantitative Northern blot hybridization. Results CAT mRNA expression containing 900 bp and 1560 bpjunB promoter remarkably and rapidly increased, and reached its peak 30min after 2 Gy X-my irradiation. Conclusions 590-900 bp fragments located in the upstream region of junB gene play an important role in the early process of cells against radiation.

关键词： junB promoter CAT reporter gene Immediate-early response gene Signal transduction

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WAVE PROPAGATION IN SATURATED GROUND USING THE VOLUME FRACTIONS

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Acta Mechanica Solida Sinica 1999年第2期12卷 144-154页

作者： Kazuya Mitsuji Yoshihiro Sugimura Masanori izumi Department of Architecture Faculty of EngineeringTohoku UniversitySendaiJapan

The purpose of this paper is to study the dynamic behavior of softground including a porous layer by considering porosity change. Inorder to take the porosity change into account, the concept of thevolume fraction, which has been proposed in continuum mechanics, isintroduced. The constitutive equations presented by Bowen are appliedto the analysis of the porous media. According to Bowen's theory, theporosity is considered as a variable called the volume fraction andhas its own consti- Tutive equation.

关键词： volume fraction wave propagation porosity change

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《德意志意识形态》手稿是“马克思口述、恩格斯笔录”的产物——驳黑泷正昭对大村假说的批评

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中共历史与理论研究 2024年第1期 188-213,229,230页

作者： [日]大村泉孙佳(译) 陈浩(校) 日本东北大学清华大学

黑泷正昭曾撰文批评大村假说,认为《德意志意识形态》手稿不是“马克思口述、恩格斯笔录”的产物,本文尝试对此批评展开反批评。黑泷指出,他仔细检讨了笔者对假说的证明过程,发现笔者并未能成功证明此假说。但是黑泷对其中两大关键性证... 详细信息

黑泷正昭曾撰文批评大村假说,认为《德意志意识形态》手稿不是“马克思口述、恩格斯笔录”的产物,本文尝试对此批评展开反批评。黑泷指出,他仔细检讨了笔者对假说的证明过程,发现笔者并未能成功证明此假说。但是黑泷对其中两大关键性证据的批评无法令人信服。第一大证据在于,手稿中出现了许多即时异文,这在恩格斯单独执笔的手稿中较少发现,而在马克思单独执笔的手稿中却屡见不鲜。事实上,该手稿中即时异文的出现频率是《1844年经济学哲学手稿》的两倍。为什么会发生这样的情况,黑泷对此并未加以考察。第二大证据在于,手稿中出现了许多德文同音异义词的混淆错误,笔者给出了6处例证。黑泷认为其中4处不应视为对同音异义词的替换更正,黑泷的这一看法要么以假定一份原本并不存在的手稿存在为前提,要么以否认恩格斯替换更正同音异义词这一事实为前提。因而笔者无法承认黑泷的批评是基于学术检讨做出的。

关键词：《德意志意识形态》手稿马克思口述恩格斯笔录即时异文同音异义词混淆

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