中国介(虫脩)属一新种(虫脩)目,(虫脩)科)

描记了中国(虫脩)目(虫脩)科介(虫脩)属Interphasma Chen et He 1新种:雷公山介(虫脩)Interphasma leigongshanense sp.nov..模式标本保存在贵州大学昆虫研究所.     

瘦枝(虫脩)属一新种记述(竹节虫目:枝(虫脩)科,短角枝(虫脩)亚科)

瘦枝(虫脩)属Mavellina,隶属于短角枝(虫脩)亚科Pachymorphinae、枝(虫脩)族Ramulini。本属共记载有3种,即褐瘦枝(虫脩)M.souchongia(Westw.);齿瘦枝(虫脩)M.dentata(stl)和仿茎瘦枝(虫脩)M.caulodes(Rehn)。前一种分布丁我国广东和海南岛,后二种分布于东南亚。笔者于1988年收集到甘肃白水江自然保护区产该属雄虫1头,经鉴定为一新种,新种模式标本保存于北京林业大学。     

中国华枝属一新种记述(竹节虫目:枝科,长角枝亚科)

华枝(虫脩)属Sinophasma Günther隶于长角枝(虫脩)亚科Necrosciinae中的一个属。迄今为止,世界上其它地区尚未发现该属种类,仅有我国南方数省产此属昆虫。竹节虫分类学家Günther于1940年将我国福建、广西产的一种订为本属模式种,特用Sino-词首,意产自中国。当时共计有四种,但不了解其寄主和危害性,经我们观察,这属昆虫常生活于壳斗科植物的锥木林内,有的能对林木生长造成严重危害。     

广西皮(虫脩)属一新种(竹节虫目:枝(虫脩)科)

本文报道采自我国广西省枝(虫脩)科皮(虫脩)属Phraortes Stl一新种。模式标本保存在北京林业大学林业系。     

广西瘦枝(虫脩)属一新种(竹节虫目:枝(虫脩)科)

笔者在整理广西竹节虫标本中,发现瘦枝(虫脩)属Macellina Uvarov一新种,现描述如下。模式标本存放于北京林业大学昆虫标本室。 腹指瘦枝(虫脩) Macellina digitata 新种(图1—3) 雄性:体细瘦,头明显长于前胸背板,后缘几与前胸等宽;头上无瘤突;头顶中央有一纵沟,至后半部较浅。触角19节,长约为前足股节的1/2;第1节长,两侧近乎平行,背面     

中国叶(虫脩)一新种(竹节虫目:叶(虫脩)科)

叶(虫脩),是一类拟态和保护色均十分巧妙的珍稀昆虫。早在公元九世纪,我国唐朝房千里撰写的《投荒杂录》一文中,对该类昆虫已有生动描述和当时人们采捉此虫用作春药的记载。这可能是迄今所知,世界上关于叶(虫脩)形态、习性和利用的最早报道。到十八世纪中叶以后,欧、美学者才开始陆续记述叶(虫脩)。至今,全世界已有30余种。叶(虫脩)绝大多数种类产于亚洲热带潮湿的近海地区。有趣的是,在我国西藏、云南、贵州、广西、海南、广东及江西诸省、自治区,都有其分布。然而,长期以来,关于中国叶(虫脩)的情况,却鲜为人知,实为憾事!本文主要记述我国叶(虫脩)属PAyllium Illiger,丽叶(虫脩)亚属     

西藏(虫脩)目两目两新种((虫脩)目:(虫脩)科,异(虫脩)科)(英语)

本文记述采自西藏短肛(虫脩)属Baculum Saussure和岔臀(虫脩)属Dixippus st(?)l各一新种.新种模式标本存于中国科学院动物研究所,北京.     

中国滇虫脩属及一新种记述(虫脩目：笛虫脩科：虫脩长角枝虫脩亚科)

重新建立滇虫脩属Dianphasma Chen & He, 1997 rev. stat. 为1有效属,并记载1新种：陈氏滇虫脩Dianphasma cheni sp. nov.,重新记述了滇虫脩属的特征,提供了分种检索表?     

安徽省长角枝虫脩亚科一新种——任氏小异虫脩(虫脩目：笛虫脩科)

记述中国安徽省长角枝虫脩亚科1新种：任氏小异虫脩Micadina reni sp. nov.? 新种近似于双叶小异虫脩M. bilobata Liu & Cai, 1994,但新种雄性臀节后缘具三角形凹缘,尾须端部开叉,雌性腹瓣后端圆和具侧脊可相区别?     

中国及越南突臀虫脩属二新种(虫脩目:笛虫脩科:长角枝虫脩亚科)

本文记述中国及越南突臀虫脩属Scionecra二新种,华氏突臀虫脩Scionecra huai Ho,sp.nov.及斑突臀虫脩Scionecra maculata Ho,sp.nov.。新种模式标本存放于广州中山大学生物博物馆。     

A homozygous female hemophilia A

BACKGROUND:

Hemophilia A (HA), being an X-linked recessive disorder, females are rarely affected, although they can be carriers.

AIMS:

To study the mutation in F8 gene in an extended family with a homozygous female HA.

MATERIALS AND METHODS:

All the seven affected members (six males and one female) were initially screened by Conformation Sensitive Gel Electrophoresis (CSGE) and direct DNA sequencing.

RESULTS:

A homozygous missense mutation c.1315G>A (p.Gly420Ser) was identified in exon 9 of F8 gene in homozygous state in the affected female born of 1° consanguinous marriage and in all the affected male members of the family. Her factor VIII levels was found to be 5.5%, vWF:Ag 120%.

CONCLUSION:

In India, as consanguineous marriages are very common in certain communities (up to 30%), the likelihood of encountering female hemophilia is higher, although this is the first case of HA out of 1600 hemophilia families registered in our Comprehensive Haemophilia Care Center. Genetic diagnosis in such cases is not necessary as all the male children will be affected and daughters obligatory carriers.     

Aminopeptidase A is angiotensinase A

Summary Quantitative histochemical measurements of aminopeptidase A (APA; E.C.3.4.11.7) were done kinetically in the kidney glomeruli of rat and mouse with an instrumental setup consisting of a microdensitometer and a computer-supported morphometric system. The histochemical demonstration of APA was carried out using the simultaneous azo coupling technique (purest-grade Fast Blue B as coupling agent and -l-glutamic acid-4-methoxy-2-naphthylamide as substrate). The methodological studies show that APA activity is calcium-ion-dependent and increases linearly with the thickness of the tissue section (3–12 m) and that the time-course of APA activity as determined by linear regression is linear only for the first 1 to 2 min of the reaction. — Kinetic measurements indicate a 40% decrease in APA activities when -l-glutamic acid-4-methoxy-2-naphthylamide (-l-Glu-MNA) is replaced by -l-aspartic acid-4-methoxy-2-naphthylamide. When -l-Glu-MNA is replaced with l-alanine-4-methoxy-2-naphthylamide, which is a substrate of aminopeptidase M (APM) only very low reaction rates are measurable (about 1.4% of those with -l-Glu-MNA). 100 and 130 mM NaCl in the incubation medium increase APA activities by approximately 16%–17%. — To clarify the functional importance of APA in the kidney, their activities were measured under the influence of angiotensins. The glomerulus was selected as the measuring site, for besides APA it contains no APM or other peptidases that could degrade angiotensins (the glomerular dipeptidyl peptidase IV is not inhibited by angiotensin II). Using the Lineweaver-Burk plot, we determined a K _m of 0.16 mM for the APA in rat glomeruli and 0.14 mM in mouse glomeruli. The V _max in mouse glomeruli is 1.6 times higher than in rat glomeruli. Ang iotensin I, II and III competitively inhibit APA in the rat and mouse glomeruli. — With quantitative histochemical techniques it was possible to show that APA is equivalent to angiotensinase A (splitting off the N-terminal aspartic acid from angiotensin I and II).Supported by the Deutsche Forschungsgemeinschaft (SFB 105)     

A glucoside of urospermal A

The aerial parts of Urospermum picroides afforded, in addition to urospermal A a p-hydroxylphenyl acetate of a glucoside of urospermal A.     

Quadruplexes of human telomere DNA analogs designed to contain G:A:G:A,G:G:A:A,and A:A:A:A tetrads

Replacement of two to four guanines by adenines in the human telomere DNA repeat dG₃(TTAG₃)₃ did not hinder the formation of quadruplexes if the substitutions took place in the terminal tetrad bridged by the diagonal loop of the intramolecular antiparallel three‐tetrad scaffold, as proved by CD and PAGE in both Na⁺ and K⁺ solutions. Thermodynamic data showed that, in Na⁺ solution, the dG₃(TTAG₃)₃ quadruplex was destabilized, the least by the two G:A:G:A tetrads, the most by the G:G:A:A tetrad in which the adenosines replaced syn‐guanosines. In physiological K⁺ solution, the highest destabilization was caused by the 4A tetrad. In K⁺, only the unmodified dG₃(TTAG₃)₃ quadruplex rearranged into a K⁺‐dependent quadruplex form, none of the multiple adenine‐modified structures did so. This may imply biological consequences for nonrepaired A‐for‐G mutations. © 2010 Wiley Periodicals, Inc. Biopolymers 93: 880–886, 2010.     

A monoclonal antibody to ochratoxin A

The production of patulin by P. expansum Link ex Gray growing in apple juice was determined over a range of pH. Patulin was found to be produced in large quantities over a narrow range of pH from 3-2 to 3–8. The biomass produced increased with increasing pH. The changes in pH due to growth of the organism were found to be small.