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1氧化磷酸化与糖酵解:精子以何种途径获取能量?显示文摘精子为高度特异性的细胞,提供精子重要功能的主要能源一一三磷酸腺苷(ATP)主要通过两种代谢途径形成,即糖酵解和氧化磷酸化(OXPHOS)。ATP除了在精子的头部和鞭毛的主段通过糖酵解的方式产生外,在线粒体主要通过OXPHOS的方式产生。然而,在精子成功受精的过程中主要以何种方式产生ATP具有很大的差异性。与糖酵解相比,线粒体呼吸被认为是一种更有效的ATP合成代谢过程。然而,研究表明ATP从线粒体到精子鞭毛末端的扩散电位不足以支持精子的运动,这表明糖酵解是精子尾部区域主要的获能方式。多项研究表明虽然糖酵解是鞭毛产生ATP的主要方式,但是,精子运动所需要的能量主要还是来自于线粒体的呼吸。有些研究表明当糖酵解受到抑制的时候,精子仍能维持其正常的运动和功能,虽然目前尚未明确这种运动是否能持续足够长的时间,是否能够达到有效受精。本文主要目的是对哺乳动物精子能量的代谢进行综述,分析人类精子在受精的过程中以何种ATP代谢途径作为主要的能量供应方式。Stefan S du Plessis Ashok Agarwal Gayatri Mohanty Michelle van der Linde 2015Asian Journal of Andrology2015,17,2:19
2The wonders of BMP9:From mesenchymal stem cell differentiation,angiogenesis,neurogenesis,tumorigenesis,and metabolism to regenerative medicine显示文摘Although bone morphogenetic proteins(BMPs)initially showed effective induction of ectopic bone growth in muscle,it has since been determined that these proteins,as members of the TGF-b superfamily,play a diverse and critical array of biological roles.These roles include regulating skeletal and bone formation,angiogenesis,and development and homeostasis of multiple organ systems.Disruptions of the members of the TGF-b/BMP superfamily result in severe skeletal and extra-skeletal irregularities,suggesting high therapeutic potential from understanding this family of BMP proteins.Although it was once one of the least characterized BMPs,BMP9 has revealed itself to have the highest osteogenic potential across numerous experiments both in vitro and in vivo,with recent studies suggesting that the exceptional potency of BMP9 may result from unique signaling pathways that differentiate it from other BMPs.The effectiveness of BMP9 in inducing bone formation was recently revealed in promising experiments that demonstrated efficacy in the repair of critical sized cranial defects as well as compatibility with bone-inducing bio-implants,revealing the great translational promise of BMP9.Furthermore,emerging evidence indicates that,besides its osteogenic activity,BMP9 exerts a broad range of biological functions,including stem cell differentiation,angiogenesis,neurogenesis,tumorigenesis,and metabolism.This review aims to summarize our current understanding of BMP9 across biology and the body.Sami Mostafa Mikhail Pakvasa Elam Coalson Allen Zhu Alex Alverdy Hector Castillo Jiaming Fan Alex Li Yixiao Feng Di Wu Elliott Bishop Scott Du Mia Spezia Alissa Li Ofir Hagag Alison Deng Winny Liu Mingyang Li Sherwin S·Ho Aravind Athiviraham Michael J·Lee Jennifer Moriatis Wolf Guillermo A·Ameer Hue H·Luu Rex C·Haydon Jason Strelzow Kelly Hynes Tong-Chuan He Russell R·Reid 2019Genes & Diseases2019,6,3:15
3China Patient-centered Evaluative Assessment of Cardiac Events Prospective Study of Acute Myocardial Infarction: Study Design显示文摘Rachel P Dreyer Xi Li Xue Du Nicholas S Downing Li Li Hai-Bo Zhang Fang Feng Wen-Chi Guan Xiao Xu Shu-Xia Li Zhen-Qiu Lin Frederick A Masoudi John A Spertus Harlan M Krumholz Li-Xin Jiang 2016Chinese Medical Journal2016,,1:13
4The enhanced X-ray Timing and Polarimetry mission—eXTP显示文摘In this paper we present the enhanced X-ray Timing and Polarimetry mission—eXTP. eXTP is a space science mission designed to study fundamental physics under extreme conditions of density, gravity and magnetism. The mission aims at determining the equation of state of matter at supra-nuclear density, measuring effects of QED, and understanding the dynamics of matter in strong-field gravity. In addition to investigating fundamental physics, eXTP will be a very powerful observatory for astrophysics that will provide observations of unprecedented quality on a variety of galactic and extragalactic objects. In particular, its wide field monitoring capabilities will be highly instrumental to detect the electro-magnetic counterparts of gravitational wave sources.The paper provides a detailed description of:(1) the technological and technical aspects, and the expected performance of the instruments of the scientific payload;(2) the elements and functions of the mission, from the spacecraft to the ground segment.ShuangNan Zhang Andrea Santangelo Marco Feroci YuPeng Xu FangJun Lu Yong Chen Hua Feng Shu Zhang Sφren Brandt Margarita Hernanz Luca Baldini Enrico Bozzo Riccardo Campana Alessandra De Rosa YongWei Dong Yuri Evangelista Vladimir Karas Norbert Meidinger Aline Meuris Kirpal Nandra Teng Pan Giovanni Pareschi Piotr Orleanski QiuShi Huang Stephane Schanne Giorgia Sironi Daniele Spiga Jiri Svoboda Gianpiero Tagliaferri Christoph Tenzer Andrea Vacchi Silvia Zane Dave Walton ZhanShan Wang Berend Winter Xin Wu Jean J.M.in't Zand Mahdi Ahangarianabhari Giovanni Ambrosi Filippo Ambrosino Marco Barbera Stefano Basso Jörg Bayer Ronaldo Bellazzini Pierluigi Bellutti Bruna Bertucci Giuseppe Bertuccio Giacomo Borghi XueLei Cao Franck Cadoux Francesco Ceraudo TianXiang Chen Yu Peng Chen Jerome Chevenez Marta Civitani Wei Cui WeiWei Cui Thomas Dauser Ettore Del Monte Sergio Di Cosimo Sebastian Diebold Victor Doroshenko Michal Dovciak YuanYuan Du Lorenzo Ducci QingMei Fan Yannick Favre Fabio Fuschino JoséLuis Ga'lvez Min Gao MingYu Ge Olivier Gevin Marco Grassi QuanYing Gu YuDong Gu DaWei Han Bin Hong Wei Hu Long Ji ShuMei Jia WeiChun Jiang Thomas Kennedy Ingo Kreykenbohm Irfan Kuvvetli Claudio Labanti Luca Latronico Gang Li MaoShun Li Xian Li Wei Li ZhengWei Li Olivier Limousin HongWei Liu XiaoJing Liu Bo Lu Tao Luo Daniele Macera Piero Malcovati Adrian Martindale Malgorzata Michalska Bin Meng Massimo Minuti Alfredo Morbidini Fabio Muleri Stephane Paltani Emanuele Perinati Antonino Picciotto Claudio Piemonte JinLu Qu Alexandre Rachevski Irina Rashevskaya Jerome Rodriguez Thomas Schanz ZhengXiang Shen LiZhi Sheng JiangBo Song LiMing Song Carmelo Sgro Liang Sun Ying Tan Phil Uttley Bo Wang DianLong Wang GuoFeng Wang Juan Wang LangPing Wang YuSa Wang Anna L.Watts XiangYang Wen Jörn Wilms ShaoLin Xiong JiaWei Yang Sheng Yang YanJi Yang Nian Yu WenDa Zhang Gianluigi Zampa Nicola Zampa Andrzej A.Zdziarski AiMei Zhang ChengMo Zhang Fan Zhang Long Zhang Tong Zhang Yi Zhang XiaoLi Zhang ZiLiang Zhang BaoSheng Zhao ShiJie Zheng Yu Peng Zhou Nicola Zorzi J.Frans Zwart 2019Science China(Physics,Mechanics & Astronomy)2019,62,2:11
5中风病始发态证候影响因素的研究显示文摘调查分析性别、年龄、职业、伴发疾病、既往史对1663例中风病始发态患者证候得分均值和发生概率的影响。结果显示:男性疾湿证显著高于女性;年龄对证候有显著影响,并与气虚证、痰湿证、血瘀证呈显著正相关关系;职业对证候无规律性影响;伴发疾病评分与风证、火热证、痰湿证、气虚证、阴虚阳亢证里显著正相关关系。提示临床辨证、证候研究、新药研制中要重视和考虑上述因素的影响。Wang Shundao Ren Zhanli Du Menghua et, al.(Xingtai Municipal people’s Hospital, Hebei 054031)(Beijing University of TCM, Beijing 100029) 1996北京中医药大学学报1996,19,4:6
6Germline mutation analysis of hPMS2 gene in Chinese families with hereditary nonpolyposis colorectal cancer显示文摘AIM: To study the germline mutation of hPMS2 gene in 26 unrelated Chinese hereditary nonpolyposis colorectal cancer (HNPCC) probands and to fulfill the screening strategy for HNPCC in Chinese. METHODS: Genomic DNA was extracted from the peripheral blood. To avoid the interference of pseudogene in detection of the remaining 11 exons (exon 1-5, 9, 11-15), long-range polymerase chain reaction (PCR) was conducted to amplify the complete coding region of hPMS2 gene firstly. Then 1/8 of the PCR productswere used as template to amplify the individual exon respectively and DNA sequencing was done. Direct DNA sequencing of the conventional PCR products of exon 6, 7, 8 and 10 of hPMS2 gene was performed. The same analysis was made in 130 healthy persons without family histories of HNPCC to further investigate the pathological effects of the detected missense mutation. RESULTS: One HNPCC proband fulf illed Bethesda guidelines and was found to carry the germline mutation of hPMS2 gene, which has not been reported in Chinese HNPCC families. It was a missense mutation at c.1532C>T of exon 11. It was detected in three controls as well with an occurrence rate of 2.3% (3/130). Since it could not be found in the PMS2-single nucleotide polymorphism (SNP) database, this missense mutation is a new SNP unreported up to date. Meanwhile, 260 reported SNPs of hPMS2 gene were detected in the 26 HNPCC probands. The 2nd and 5th exons were probably the hot SNP regions of hPMS2 gene in Chinese HNPCC families involving 53.1% of all reported SNP. CONCLUSION: The germline mutation of hPMS2 gene may be rare in Chinese HNPCC families. The 2nd and 5th exons are hot SNP regions of hPMS2 gene.Xia Sheng, Xiao-Yan Zhou, Xiang Du, Tai-Ming Zhang, WeiQi Sheng, Da-Ren Shi, Department of Pathology, Shanghai Cancer Center, Fudan University, Shanghai 200032, China Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China Heng-Hua Zhou, Department of Pathology, Shanghai Ninth People’s Hospital Affi liated to Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China San-Jun Cai, Department of Abdominal Surgery, Cancer Center, Fudan University, Shanghai 200032, China 2010World Journal of Gastroenterology2010,16,30:6
7Plasma and platelet serotonin levels in patients with liver cirrhosis显示文摘AIM: To analyze the relationship between plasma and platelet serotonin levels and the degree of liver insufficiency. METHODS: The prospective study included 30 patients with liver cirrhosis and 30 healthy controls. The degree of liver failure was assessed according to the Child-Pugh classification. Platelet and platelet poor plasma serotonin levels were determined. RESULTS: The mean plasma serotonin level was higher in liver cirrhosis patients than in healthy subjects (215.0 ± 26.1 vs 63.1 ± 18.1 nmol/L; P < 0.0001). The mean platelet serotonin content was not significantly different in patients with liver cirrhosis compared with healthy individuals (4.8 ± 0.6; 4.2 ± 0.3 nmol/platelet; P > 0.05). Plasma serotonin levels were significantly higher in Child- Pugh grade A/B than in grade C patients (246.8 ± 35.0 vs 132.3 ± 30.7 nmol/L; P < 0.05). However, platelet serotonin content was not significantly different between Child-Pugh grade C and grade A/B (4.6 ± 0.7 vs 5.2 ± 0.8 nmol/platelet; P > 0.05). CONCLUSION: Plasma serotonin levels are significantly higher in patients with cirrhosis than in the controls and represent the degree of liver insufficiency. In addition, platelet poor plasma serotonin estimation is a better marker for liver insufficiency than platelet serotonin content.■or■e M ulafi Duko S Mirkovi Miodrag D Vukevi Jelena S Rudi 2007World Journal of Gastroenterology2007,13,43:5
8MicroRNAs as emerging biomarkers and therapeutic targets for pancreatic cancer显示文摘Despite tremendous efforts from scientists and clinicians worldwide, pancreatic adenocarcinoma(PDAC) remains a deadly disease due to the lack of early diagnostic tools and reliable therapeutic approaches. Consequently, a majority of patients(80%) display an advanced disease that results in a low resection rate leading to an overall median survival of less than 6 months. Accordingly, robust markers for the early diagnosis and prognosis of pancreatic cancer, or markers indicative of survival and/or metastatic disease are des-perately needed to help alleviate the dismal prognosis of this cancer. In addition, the discovery of new therapeutic targets is mandatory to design effective treatments. In this review, we will highlight the translational studies demonstrating that microRNAs may soon translate into clinical applications as long-awaited screening tools and therapeutic targets for PDAC.Marion Gayral Sébastien Jo Naima Hanoun Alix Vignolle-Vidoni Hubert Lulka Yannick Delpu Aline Meulle Marlène Dufresne Marine Humeau Maёl Chalret du Rieu Barbara Bournet Janick Sèlves Rosine Guimbaud Nicolas Carrère Louis Buscail Jérome Torrisani Pierre Cordelier 2014World Journal of Gastroenterology2014,20,32:4
9持续气道正压通气在预防阻塞性睡眠呼吸暂停患者心血管事件中的作用显示文摘阻塞性睡眠呼吸暂停(obstructive sleep apnea,OSA)导致阵发性低氧血症,夜间交感神经系统激活,血压、氧化应激和炎症指标的升高以及高凝血症。较大的胸内负压波动也会给心脏和大血管施加机械应力。基于人群和睡眠诊所的队列研究显示,OSA与心脑血管事件,特别是脑卒中相关。McEvoy RD Antic NA Heeley E Luo Y Ou Q Zhang X Mediano O Chen R Drager LF Liu Z Chen G Du B McArdle N Mukherjee S Tripathi M Billot L Li Q Lorenzi-Filho G Barbe F Redline S Wang J Arima H Neal B White DP Grunstein RR Zhong N Anderson CS 练桂丽 叶鹏 2016中华高血压杂志2016,24,11:4
10A novel orthotopic and metastatic mouse model of breast cancer in human mammary microenvironment(摘要)显示文摘Wang, J Xia, TS Liu, XA Ding, Q Du, Q Yin, H Wang, S 2010南京医科大学学报(自然科学版)2010,30,8:4
11Self-organization of Gold Nanoparticles Protected by 9-(5-Thiopentyl)-carbazole显示文摘Through the reduction of [AuCl4]- by aqueous sodium borohydride in the presence of 9-(5-thiopentyl)-carbazole, the gold nanoparticles has been prepared and characterized.Wang, S Li, YL Du, CM Shi, ZQ Xiao, SX Fang, HJ Zhu, DB 2001Chinese Chemical Letters2001,12,12:4
12Origin of pit chains in the floor of lunar Copernican craters显示文摘There are small pit chains in the floor of lunar Copernican craters. They are usually so small in scale that there are few lunar spacecrafts to detect their detailed morphology. Combining camera data from Lunar Orbiter, Lunar Reconnaissance Orbiter (LRO), Kaguya and Chang’e-1 missions, 5 representative large Copernican craters on various terrains of the lunar surface are chosen to study the origin of the pit chains in the crater floor. The morphology and distribution characteristic of the pit chains are referred by the high resolution images in this research. It is suggested that it is the magma activities from the subsurface magma layer combining with the existence of fractures and faults under the crater floor that leaded the formation of the pit chains. The model is further verified and discussed using the regolith thickness data in the crater floor. Our model suggests that the pit chains are still developing in the floor of the Copernican craters and the Moon may not be totally cold. Finally, the model limitation and potential future work are discussed based on available data.XIAO ZhiYong 1* , ZENG ZuoXun 1,2 , XIAO Long 1,2 , FA WenZhe 3 & HUANG Qian 3,4 1 Faculty of Earth Sciences, China University of Geosciences, Wuhan 430074, China 2 Research Center for Space Science and Technology, China University of Geosciences, Wuhan 430074, China 3 Institut de Physique du Globe de Paris, 4 Avenue de Neptune, Saint Maur des Fosse’s, 94100, France 4 Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China 2010Science China(Physics,Mechanics & Astronomy)2010,53,12:4
13母乳喂养和孕产妇心血管病风险:30万中国妇女的前瞻性研究显示文摘母乳喂养给儿童健康带来了大量好处,并且也与母亲生命后期心血管病风险降低相关。然而,有关其对心血管病影响的证据仍然不一致,特别是在东亚人中,母乳喂养的频率和持续时间与西方国家的频率和持续时间显著不同。2004-2008年,中国香港嘉道理生物样本库(China Kadoorie biobank)从中国10个不同地区招募了年龄30-79岁受试者50万人,基线无心血管病的女性受试者289 573人在8年的随访中,刘莉 叶鹏 Peters SAE Yang L Guo Y Chen Y Bian Z Du J Yang J Li S Li L Woodward M Chen Z 2017中华高血压杂志2017,25,8:4
14Utilization of Thermal Infrared Image for Inversion of Winter Wheat Yield and Biomass显示文摘The present paper utilizes thermal infrared image for inversion of winter wheat yield and biomass with different technology of irrigation(drip irrigation,sprinkler irrigation,flood irrigation).It is the first time that thermal infrared image is used for predicting the winter wheat yield and biomass.The temperature of crop and background was measured by thermal infrared image.It is necessary to get the crop background separation index(CBSIL,CBSIH),which can be used for distinguishing the crop value from the image.CBSIL and CBSIH(the temperature when the leaves are wet adequately;the temperature when the stomata of leaf is closed completely) are the threshold values.The temperature of crop ranged from CBSIL to CBSIH.Then the ICWSI was calculated based on relevant theoretical method.The value of stomata leaf has strong negative correlation with ICWSI proving the reliable value of ICWSI.In order to construct the high accuracy simulation model,the samples were divided into two parts.One was used for constructing the simulation model,the other for checking the accuracy of the model.Such result of the model was concluded as:(1) As for the simulation model of soil moisture,the correlation coefficient(R2) is larger than 0.887 6,the average of relative error(Er) ranges from 13.33% to 16.88%;(2) As for the simulation model of winter wheat yield,drip irrigation(0.887 6,16.89%,-0.12),sprinkler irrigation(0.970 0,14.85%,-0.12),flood irrigation(0.969 0,18.87%,0.18),with the values of R2,Er and CRM listed in the parentheses followed by the individual term.(3) As for winter wheat biomass,drip irrigation(0.980 0,13.70%,0.13),sprinkler irrigation(0.95,13.15%,-0.14),flood irrigation(0.970 0,14.48%,-0.13),and the values in the parentheses are demonstrated the same as above.Both the CRM and Er are shown to be very low values,which points to the accuracy and reliability of the model investigated.The accuracy of model is high and reliable.The results indicated that thermal infrared image can be used potentially for inversion of winter wheat yield and biomass.DU Wen-yong ZHANG Lu-da HU Zhen-fang Shamaila Z ZENG Ai-jun SONG Jian-li LIU Ya-jia Wolfram S Joachim M HE Xiong-kui 2011光谱学与光谱分析2011,31,6:3
15Endothelial cell-derived GABA signaling modulates neuronal migration and postnatal behavior显示文摘服的外皮为集成是必要的并且为大多数行为被要求的信息处理。当神经原从室的地区连续地移居联合进特定的外皮的层时,服的外皮的精致地精确的 laminar 组织在胚胎的开发期间产生。当时指南为设计神经原移植责骂的光线的神经胶质行为, pre-formed 脉管的网络为 GABAergic interneuron 移植提供支持和指导暗示。这研究提供新奇概念、机械学的卓见进 vascular-neuronal 相互作用的这个范例,揭示伽马氨基丁酸并且它经由胚胎的前脑 endothelial 房间的调停受体的发信号的新机制。与二个新 endothelial 房间的使用,特定的有条件的老鼠 GABA 小径当模特儿(Gabrb3 Tie2-Cre 和 Vgat 我们显示出的 Tie2-Cre ), 从 endothelial 房间的伽马氨基丁酸版本的那部分或完全的损失在 embryogenesis 期间导致脉管的缺点并且损害长途的移植并且外皮的 interneurons 放。使不安的 endothelial 的下游的效果导出房间的伽马氨基丁酸发信号是批评的,导致上次修改到外皮的电路和坚持的行为的赤字。而且,我们说明在支持他们血大脑障碍性质的迁居, angiogenesis 和获得的前脑 endothelial 房间发信号的伽马氨基丁酸的激活的新机制。我们的调查结果揭开并且阐明在从表明小径的古典 neuronal 伽马氨基丁酸是不同的并且在 neuropsychiatric 疾病的病原学和 pathophysiology 上打开新灯的 CNS 表明小径的新奇 endothelial 伽马氨基丁酸例如孤独性光谱混乱,癫痫,焦虑,消沉和精神分裂症。Suyan Li Peeyush Kumar Sampada Joshee Timo Kirschstein Sivan Subburaju Jahan S Khalili Jonas Kloepper Chuang Du Abdallah Elkhal Gabor Szabo Rakesh K Jain Rudiger Kohling Anju Vasudevan 2018Cell Research2018,28,2:3
16A PRELIMINARY STUDY ON TRE ZONE OF ALPINE SCRUB AND MEADOW OF QINGHAI-XIZANG (TIBETAN) PLATEAU显示文摘The zone of alpine scrub and meadow, characterized by highlandsubpolar humid/subhumid climate, is a transitional area from deep gorges to theplateau proper.The natural zone is unique in physical environments and naturalecosystems, and could not be found at the lowlands elsewhere on the earth.Thepredominant type of vegeation is alpine meadow, including Kobresia meadow,herbaceous meadow and swampy meadow. It is an important pasturelands ofanimal husbandry for Tibetan on the plateau. Main vegetion types, animal groups,characteristics of alpine meadow soils, the altitudinal belt and the horizontalzonality of the natural zone, as well as utilization and management of the grasslandsare discussed in the present paper.Zheng Du(Institute of Geography, CAS, Beijing 100101People’s Republic of China) 1996Journal of Geographical Sciences1996,6,3:3
17Genomic Epidemiology of ST34 Monophasic Salmonella enterica Serovar Typhimurium from Clinical Patients from 2008 to 2017 in Henan,China显示文摘Salmonella enterica serovar 4,[5],12:i:-(S.4,[5],12:i:-)is a monophasic variant of Salmonella enterica serovar Typhimurium that has emerged as a global serovar causing public health concern.To date,the epidemiology and genomic characterization of this pathogen in China have not been well described.We investigated the prevalence,antimicrobial resistance(AMR)phenotypes,and population genomics of sequence type 34(ST34)S.4,[5],12:i:-among cases of human salmonellosis in Henan Province,China.A total of 100 ST34 S.4,[5],12:i:-isolates were studied from 2008 to 2017 and found mostly resistant to ampicillin(AMP),streptomycin(STR),sulfonamides(SUL),and tetracycline(TET)(ASSu T).Bayesian phylogenetic analysis demonstrated that isolates identified in China were mostly related to the European lineage and evolved into two major clades with different resistance genes and plasmid profiles.Notably,clade 1 showed a significantly higher rate of mutations in gyr A and plasmid-mediated quinolone resistance genes.The carrying of the resistance-containing region(encoding R-type ASSu T),including bla(conferring resistance to AMP),str AB(STR),sul2(SUL),and tet(B)(TET)inserted into the flj BA operon,was responsible for most of the monophasic variants in clade 2.Inc HI2 plasmids were the dominant multi-drug resistance mobile genetic elements accounting for the transmission of acquired resistance genes in this serovar,and these were more prevalent in clade 1.Our findings highlighted the increasing prevalence of multi-drug resistant S.4,[5],12:i:-in China,along with the differential characteristics of resistance gene acquisition among various lineages.Based on our data,control measures are required to address the spread of this zoonotic pathogen.Further owing to its potential origin in food-producing animals,a'One Health'approach,should be implemented to support surveillance whilst informing interventional strategies.Yujiao Mu Ruichao Li Pengcheng Du Pei Zhang Yan Li Shenghui Cui Séamus Fanning Li Bai 2022Engineering2022,8,8:2
18Naloxone protects rat dopaminergic neurons against inflammatory damage through inhibition of microglia activation and superoxide generation显示文摘Liu B Du L Hong J S 2000J Pharmacol Exp Ther2000,293,2:2
19New developments of the effect of melatonin on reproduction显示文摘In the past decades, a lot of advances in understanding the biochemistry and physiology of the pineal gland have been made. There is evidence that it interacts with many endocrine as well as non-endocrine tissues to influence their metabolic activity modulating many organs and functions. Melatonin is secreted by the pineal gland in the brain and plays an important role in regulating the neuroendocrine system. This hormone is one of the major role players in the regulation of the circadian sleep-wake cycle. It is normally released from the pineal gland during the night in response to environmental changes in light. Studies have shown that melatonin plays a role in the regulation of many reproductive processes such as puberty, gonadal function, and pregnancy. Beside these, melatonin has been shown to be able to directly neutralize a number of free radicals and reactive oxygen and nitrogen species. The main objective of this review is to provide comprehensive information about the new developments in melatonin research regarding its role in reproduction. A review of international scientific literature was done and a question-and-answer format was used in an attempt to convey comprehensive information in a simple manner. This review discusses evidence currently available relating to the effect of melatonin on reproductive processes. It deliberates the mechanism of action of melatonin, its effect on puberty, testicular and ovafunction, pregnancy, and oxidative stress. A growing body of scientific evidence is suggesting that melatonin plays an important role in reproductive function. It is therefore imperative to highlight the beneficial effects of this hormone in improving the reproductive processes.Fanuel Lampiao Stefan S Du Plessis 2013World Journal of Obstetrics and Gynecology2013,2,2:2
20Pathways of N 2 O emission from rice paddy soil显示文摘X Yan S Shi L Du G Xing 2000Soil Biology and Biochemistry2000,,3:2
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