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Blood flow restriction in human skeletal muscle during rest periods after high-load resistance training down-regulates miR-206 and induces Pax7

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Journal of Sport and Health Science 2021年第4期10卷 470-477页

作者： Ferenc Torma Zoltan Gombos Marcell Fridvalszki Gergely Langmar Zsofia Tarcza Bela Merkely hisashi naito Noriko Ichinoseki-Sekine Masaki Takeda Zsolt Murlasits Peter Osvath Zsolt Radak Research Center for Molecular Exercise Science University of Physical EducationBudapest 1123Hungary Department of Kinesiology University of Physical EducationBudapest 1123Hungary Heart and Vascular Center Semmelweis UniversityBudapest 1122Hungary Faculty of Health and Sports Science Juntendo UniversityChiba 270-1695Japan Faculty of Health and Sports Science Doshisha UniversityKyotanabe 610-0394Japan Laboratory of Animal Research Center Qatar UniversityDoha 2713Qatar Department of Health Sciences and Sport Medicine University of Physical EducationBudapest 1123Hungary

Backgroud:Blood flow re striction(BFR) with low-intensity re sistance training has been shown to result in hypertrophy of skeletal *** this study,we tested the hypothesis that BFR during the rest periods between acute,high-intensity resistance exercise sessions(70% of 1 repetition maximum,7 sets with 10 repetitions) enhances the effects of the resistance ***:A total of 7 healthy young men performed squats,and between sets BFR was carried out on one leg while the other leg served as a *** BFR was applied during rest periods,even severe occlusion pressure(approximately 230 mmHg),which almost completely blocked blood flow,was well-tolerated by the *** muscle-specific microRNAs were measured from the biopsy samples,which were taken 2 h after the acute ***:Doppler data showed that the pattern of blood flow recovery changed significantly between the first and last ***-206 levels significantly decreased in the BFR leg compared to the *** mRNA levels of RAC-β serine/threonine-protein kinase v22,nuclear re spiratory factor 1,vascular endothelial growth factor,lupus Ku autoantigen protein p70 genes(p <0.05),and paired box 7(p <0.01) increased in the BFR *** protein levels of paired box 7,nuclear respiratory factor 1,and peroxisome proliferator-activated receptor y coactivator 1α did not differ between the BFR leg and the control ***:BFR,during the rest periods of high-load resistance training,could lead to mRNA elevation of those proteins that regulate angiogenesis,mitochondrial biogenesis,and muscle hypertrophy and ***,BFR also can cause DNA damage,judging from the increase in mRNA levels of lupus Ku autoantigen protein p70.

关键词： Blood flow restriction High-intensity resistance training microRNA Satellite cells

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Blood flow restriction during the resting periods of high-intensity resistance training does not alter performance but decreases MIR-1 and MIR-133A levels in human skeletal muscle

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Sports Medicine and Health Science 2021年第1期3卷 40-45页

作者： Ferenc Torma Peter Bakonyi Zsolt Regdon Zoltan Gombos Matyas Jokai Gergely Babszki Marcell Fridvalszki Laszl Virg hisashi naito SyedRehan Iftikhar Bukhari Zsolt Radak Research Center of Molecular Exercise Science University of Physical EducationBudapestHungary Department of Medical Chemistry Faculty of MedicineUniversity of DebrecenHungary Department of Exercise Physiology Graduate School of Health and Sports Science&MedicineJuntendo UniversityJapan Doctoral School of Clinical Medicine Semmelweis UniversityBudapestHungary Faculty of Sport Sciences Waseda UniversityJapan

Blood flow restriction(BFR)during exercise bouts has been used to induce hypertrophy of skeletal muscle,even with low ***,the effects of BFR during the rest periods between sets are not *** have tested the hypothesis that BFR during rest periods between sets of high-intensity resistance training would enhance ***-two young adult male university students were recruited for the current study,with n=11 assigned to BFR and n=11 to a control *** results revealed that four weeks training at 70%of 1 RM,five sets and 10 repetitions,three times a week with and without BFR,resulted in similar progress in maximal strength and in the number of maximal *** miR-1 and miR-133a decreased significantly in the vastus lateralis muscle of BFR group compared to the group without BFR,while no significant differences in the levels of miR133b,miR206,miR486,and miR499 were found between *** conclusion,it seems that BFR restrictions during rest periods of high-intensity resistance training,do not provide benefit for enhanced performance after a four-week training ***,BFR-induced downregulation of miR-1 and miR-133a might cause different adaptive responses of skeletal muscle to high intensity resistance training.

关键词： Blood flow restriction Occlusion Skeletal muscle High intensity resistance training microRNA

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Effect of a combination of astaxanthin supplementation, heat stress, and intermittent reloading on satellite cells during disuse muscle atrophy

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2018年第11期19卷 844-852页

作者： Toshinori YOSHIHARA Takao SUGIURA Nobuyuki MIYAJI Yuki YAMAMOTO Tsubasa SHIBAGUCHI Ryo KAKIGI hisashi naito Katsumasa GOTO Daijiro OHMORI Toshitada YOSHIOKA Graduate School of Health and Sports Science Juntendo UniversityInzaiChiba 270-1695Japan Faculty of Education Yamaguchi UniversityYamaguchiYamaguchi 753-8513Japan Toyo Koso Kagaku Co.Ltd. UrayasuChiba 279-0041Japan Institute of Health and Sports Science Kurume UniversityKurumeFukuoka 839-8502Japan Institute of Liberal Arts and Science Kanazawa UniversityKanazawaIshikawa 920-1192Japan Faculty of Medicine Juntendo UniversityBunkyo-kuTokyo 113-0033Japan Graduate School of Health Sciences Toyohashi SOZO UniversityToyohashiAichi 440-8511Japan Department of Chemistry School of MedicineJuntendo UniversityInzaiChiba 270-1695Japan Hirosaki Gakuin University HirosakiAomori 036-8577Japan

We examined the effect of a combination of astaxanthin （AX） supplementation, repeated heat stress, and intermittent reloading （IR） on satellite cells in unloaded rat soleus muscles. Forty-nine male Wistar rats （8-week-old） were divided into control, hind-limb unweighting （HU）, IR during HU, IR with AX supplementation, IR with repeated heat stress （41.0-41.5 ℃ for 30 min）, and IR with AX supplementation and repeated heat stress groups. After the experimental period, the antigravitational soleus muscle was analyzed using an immunohistochemical technique. Our results revealed that the combination of dietary AX supplementation and heat stress resulted in protection against disuse muscle atrophy in the soteus muscle. This protective effect may be partially due to a higher satellite cell number in the atrophied soleus muscle in the IR/AX/heat stress group compared with the numbers found in the other groups. We concluded that the combination treatment with dietary AX supplementation and repeated heat stress attenuates soleus muscle atrophy, in part by increasing the number of satellite cells.

关键词： Antioxidant astaxanthin Disuse muscle atrophy Heat stress Satellite cell

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人横纹肌肉瘤细胞中RGS4基因表达受表观遗传调控的研究

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内蒙古大学学报（自然科学版） 2020年第2期51卷 163-167页

作者：包巴图内藤久士呼和浩特民族学院体育学院呼和浩特010051 日本顺天堂大学运动医学研究院日本千叶县270-1695

RGS蛋白是G蛋白信号途径的关键调节分子之一,RGS蛋白的异常表达与多种恶性肿瘤的发展相关,其中RGS4蛋白的作用鲜有报道。横纹肌肉瘤是儿童最常见的起源于原始间叶组织的恶性肿瘤,临床病例中比较常见。以培养不同代数的横纹肌肉瘤RD细胞... 详细信息

RGS蛋白是G蛋白信号途径的关键调节分子之一,RGS蛋白的异常表达与多种恶性肿瘤的发展相关,其中RGS4蛋白的作用鲜有报道。横纹肌肉瘤是儿童最常见的起源于原始间叶组织的恶性肿瘤,临床病例中比较常见。以培养不同代数的横纹肌肉瘤RD细胞系为材料,分别利用RT-PCR技术及Western blot技术分析了5-Aza和TSA处理下的RGS4基因mRNA水平及蛋白质水平的表达量。同时利用ChIP试验明确了RGS4基因启动子区域结合的调控蛋白。试验结果显示RGS4基因的表达存在着表观遗传调控机理,受到甲基化和乙酰化的调控,MeCP2和HDAC2分别参与RGS4基因的DNA甲基化和组蛋白乙酰化调控,研究结果表明RGS4基因的表达与横纹肌肉瘤的产生相关,本试验为进一步研究横纹肌肉瘤的产生机理奠定了基础。

关键词： RGS4 儿童横纹肌肉瘤表观遗传表达调控

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不同时间的热处理对大鼠肌肉Akt/mTOR信号途径的影响

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内蒙古大学学报（自然科学版） 2018年第3期49卷 289-295页

作者：包巴图包金海内藤久士呼和浩特民族学院体育系呼和浩特010051 日本顺天堂大学运动医学研究院

热处理会诱导骨骼肌中肌肉蛋白的合成及肌肉肥大,同时刺激细胞信号途径.另外,有报道表明38℃以上的热处理以温度依赖性方式激活细包内信号途径.然而,骨骼肌细胞中热刺激对信号途径的持续性影响方面鲜有报道.因此,分析了热处理对大鼠骨... 详细信息

热处理会诱导骨骼肌中肌肉蛋白的合成及肌肉肥大,同时刺激细胞信号途径.另外,有报道表明38℃以上的热处理以温度依赖性方式激活细包内信号途径.然而,骨骼肌细胞中热刺激对信号途径的持续性影响方面鲜有报道.因此,分析了热处理对大鼠骨骼肌中信号途径的作用.利用Western blot技术检测热处理后不同时间点(30,60和90min)的腓肠肌及比目鱼肌中Akt/mTOR信号途径蛋白Akt,mTOR,p70S6K及4E-BP1的磷酸化水平及热激蛋白HSP72的表达水平.结果表明,Akt及mTOR的磷酸化水平没有变化,磷酸化的p70S6K及4E-BP1水平有所上调,而热激蛋白HSP72的水平有所下调.

关键词：大鼠肌肉热处理 Akt/mTOR信号途径磷酸化蛋白水平

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不同温度热处理对大鼠骨骼肌Akt/mTOR信号通路的影响

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内蒙古大学学报（自然科学版） 2018年第6期49卷 605-611页

作者：包巴图包金海内藤久士呼和浩特民族学院体育系呼和浩特010051 日本顺天堂大学运动医学研究院

热处理会诱导应急蛋白,从而促进细胞蛋白质合成并进一步导致肌肉肥大.但热处理对细胞内蛋白质合成中主要信号通路Akt/mTOR信号途径的影响鲜有报道.本研究分析了热处理对大鼠骨骼肌中Akt/mTOR信号途径的作用.利用Western blot技术检测了... 详细信息

热处理会诱导应急蛋白,从而促进细胞蛋白质合成并进一步导致肌肉肥大.但热处理对细胞内蛋白质合成中主要信号通路Akt/mTOR信号途径的影响鲜有报道.本研究分析了热处理对大鼠骨骼肌中Akt/mTOR信号途径的作用.利用Western blot技术检测了不同温度(37℃、38℃、39℃、40℃)的热处理对大鼠腓肠肌及比目鱼肌中Akt/mTOR信号途径蛋白Akt,mTOR,p70S6K及4E-BP1的磷酸化水平及热激蛋白HSP72的表达水平.结果表明39℃、40℃的热处理能够激活Akt及下游p70S6K的活性而对于热激蛋白HSP72的表达水平没有影响.

关键词：大鼠肌肉热处理 Akt/mTOR信号途径磷酸化蛋白水平

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An Unusual Acceleration of Amination Reactivity by the Proximal Ester Groups in Catechol Diesters: An Efficient Way for Peptide Synthesis

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Precision Chemistry 2023年第2期1卷 100-106页

作者： An Wu Hirotaka Ikeda hisashi Yamamoto Peptide Research Center Chubu UniversityKasugaiAichi 487-8501Japan Materials Science Department MOLSIS Inc.Chuo-kuTokyo 104-0032Japan

Peptide bond formation has drawn more and more attention due to its importance in medicinal chemistry and drug *** active esters to construct peptide bonds is an indispensable strategy in this *** herein report a fast and efficient amination reaction to synthesize peptides from catechol *** monoesters are good active esters in peptide synthesis due to the anchimeric assistance *** previously reported work,the amination reaction was inactivated if the 2-hydroxyl group in the catechol esters was ***,we found an unusual acceleration of the amination reactivity when the 2-hydroxyl group was functionalized as an ester *** reaction can be complete in 2−3 min in some *** acceleration was found through experimental studies to not result from the anchimeric assistance *** proposed aπ*−π*interaction pathway between the two proximal ester *** computational studies were made to support this assumption.

关键词： catechol diesters peptide synthesis amination π*−π*interaction proximal ester groups

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