中国柱角水虻属二新种(双翅目,水虻科)(英文)

记述我国柱角水虻属2新种,即黄跗柱角水虻Beris flava sp.nov.,舟曲柱角水虻B.zhouquensis sp.nov.。模式标本保存在中国农业大学昆虫博物馆和中国科学院动物研究所。1黄跗柱角水虻,新种Beris flavasp.nov.(图1～3)新种与端褐柱角水虻B.fuscipes Meigen近似,但复眼的毛短而稀疏,生殖背板无背侧突,生殖突长钩状。正模♂,宁夏径源龙潭,1880m,2008-07-05,刘经贤。副模1♂,同正模。2舟曲柱角水虻,新种Beris zhouquensis sp.nov.(图4～6)新种与指突柱角水虻B.digitata Li,Zhanget Yang近似,但跗节全黑色,生殖突基部无突起。正模♂,甘肃舟曲沙滩林场,2400m,1999-07-17,王洪建。副模1♂,同正模,1999-07-16,姚建采。     

中国距水虻属四新种(双翅目,水虻科)(英文)

记述我国距水虻属Allognosta 4新种,基黑距水虻A.basinigra sp.nov.,彩旗距水虻A.caiqiana sp.nov.,大龙潭距水虻A.dalongtana sp.nov.,梁氏距水虻A.liangi sp.nov.。模式标本保存在中国农业大学昆虫博物馆。     

中国距水虻属新种记述(双翅目,水虻科)

记述我国距水虻属Allognosta 4新种,即黑端距水虻A.apicinigra sp.nov.、刘氏距水虻A.liui sp.nov.、宁夏距水虻A.ningxiana sp.nov.和雁山距水虻A.yanshana sp.nov,.模式标本保存在中国农业大学昆虫博物馆.     

中国黑水虻属一新种(双翅目,水虻科)

记述了我国黑水虻属1新种,即广西黑水虻Nigritomyia guangxiensis sp.nov,.模式标本保存在中国农业大学昆虫博物馆.     

中国盾刺水虻属一新种记述(双翅目,水虻科)(英文)

记述我国盾刺水虻属Oxycera 1新种,即基斑盾刺水虻O.basalis sp.nov..模式标本保存在中国农业大学昆虫博物馆.     

神经管畸形相关基因的研究进展

神经管畸形是由遗传和环境因素共同作用而导致的一种常见的出生缺陷。遗传因素中包括细胞增殖因子、转录因子及影响叶酸代谢的关键酶的基因。本文着重从动物模型和群体流行病学调查两方面,简述目前研究的热点基因及特定位点的遗传多态性与神经管畸形的关系,从而揭示多因素作用在神经管畸形病因学研究中的意义。 Progress in Researches on Neural Tube Defects Related the Genes QU Mei,LI Zhu Institute of Reproductive and Child Health of Peking University,National Reference Laboratory on Reproductive Health Research Ministry of Health,Beijing 100083,China Abstract:Neural tube defects are common birth defects which are ascribed to the combination of genetic and environmental factors.The genetic factors include cell growth factors,transformation factors and key enzymic genes involved in folate metabolism.This paper reviews the genes as focus of current investigantion and the relationship between the genetic polymorphism on the specific sites and neural tube defects based on animal model and population epidemiological study.It indicats that the multifactors play an important role in the etiology of neural tube defects. Key words：neural tube defects; genetic polymorphism     

仙女蝎蛉科的最古老化石(昆虫纲,长翅目)在中国陕西首次发现

报道迄今仙女蝎蛉科的最古老化石(meropeids)在中国陕西发现.经研究确定1新属1新种:Sinothuama ladinica gen.et sp.,归入仙女蝎蛉科Meropeidae Handlisch,1906.此次这类化石的发现,其意义在于:首次发现迄今世界上仙女蝎蛉科的最古老化石(meropeids),从而打破了俄国学者发现最古老仙女蝎蛉化石在晚三叠世所保持30余年的纪录;并根据从晚三叠世至新生代中仙女蝎蛉化石的不同种类所反映出来的脉序变化特征,推论仙女蝎蛉早期分异于在三叠纪,继承和发展于侏罗纪.化石采自中国陕西铜川地区中三叠统铜川组(Tr2t),时代相当于欧洲标准时代的拉丁尼期(Ladinian stage).     

中国陕西铜川中三叠世新直脉蝎蛉科一新属一新种(昆虫纲,长翅目)

记述新直脉蝎蛉科1新属1新种Neorthophlebopsis qishuiheensis gen.et sp.nov.,并以其Sc很长,Rs与M分支同一水平,Rs1 2分支在Pt之前,M与CuA汇合,臀区3支粗壮横脉,呈一字斜形排列等特征与已知属相区别.新属种系铜川昆虫组合的新成员,属陕西昆虫群.化石标本采自陕西铜川中三叠统铜川组下段上部灰绿色泥页岩.铜川组的时代相当欧洲拉丁尼期(Ladinian Stage).     

还原叶酸载体基因（RFC1）与神经管和颅面畸形病因学关系的研究进展

神经管畸形和颅面畸形是最常见的出生缺陷,由遗传和环境因素共同作用所致,大规模的人群流行病学研究已证实,叶酸能降低发生这类畸形的危险。叶酸缺乏是神经管和颅面畸形发生的主要环境因素,但其机制尚不清楚,通过对与叶酸代谢有关的还原叶酸载体（reduced folate carrier,RFC）的生化特点、生理功能、还原叶酸载体基因（RFC1）结构功能、调控、表达及其与叶酸水平和神经管颅面畸形的关系等研究进展进行综述,从而为神经管和颅面畸形的病因学研究提出可能的候选基因。 Abstract: Neural tube and craniofacial defects are common birth defects which are ascribed to the combination of genetic and environmental factors. The population epidemiological studies suggested that periconceptional use of multivitamins containing folic acid can reduce a woman’s risk of having a child with neural tube and craniofacial defects. It’s a major environmental factor that periconceptinal women with deficiency of folic acid may increase their risk for delivering babies with neural tube and craniofacial defects, but the mechanism by which folic acid facilitated this risk rediction is unknown. This paper reviews folate transport carrier, Reduced Folate Carrier(RFC)’s characteristics in biological chemistry, physiological function, the folate transport mechanism, structure, function, regulation and expression of reduced folate carrier gene(RFC1), and the relationship between RFC1 with plasm or erythrocyte folate level and neural tube defects, et al. It is suggested a etiologic hypothesis in investigation of candidate gene encoding specific folat-related pathways of neural tube and craniofacial defects.     

湖北神农架缺脉舞虻亚属五新种(双翅目,舞虻科)(英文)

记述湖北神农架缺脉舞虻亚属Coptophlebia 5新种,即端鬃缺脉舞虻Empis (Coptophlebia) apiciseta sp. nov.,基黄缺脉舞虻E. (C.) basiflava sp. nov.,指突缺脉舞虻E. (C.)digitata sp. nov.,白毛缺脉舞虻E. (C.) pallipilosa sp. nov.,后鬃缺脉舞虻E. (C.) posticasp. nov.。