用分子遗传学及免疫学方法控制鱼类寄生性甲藻

寄生性甲藻,例如Amyloodiniumocellatum,给鱼类养殖带来严重的危害。虽然,近年来针对Amyloodinium的药物治疗有一些新的进展,如使用氯喹、过氧化氢和3,N泛影葡胺拉沙洛西等,然而,含铜类药物仍然是最有效的。近年来分子遗传学和免疫学的进展,使得我们能够更好地了解寄生性甲藻的流行病学及其防治方法。分子系统学研究认为某些寄生性甲藻,如Amyloodiniumocellatum,可以聚类为高度同源性的一支;而其它的如Piscinoodiniumpillulare,则可以认为不止一种或更高的分类阶元。这些分子分析也发展出一些高灵敏的检测技术,可以检测出环境中极少量的寄生性甲藻。通过对Amyloodinium的免疫学研究表明,鱼类能对寄生物的感染产生强烈的高度特异的保护性免疫应答,其中主要是抗体介导的免疫应答。鱼体皮肤和鳃也能表达内源非特异性多肽抗生素(类组蛋白),它们能对Amyloodinium造成致命的破坏。利用这些特异或非特异的免疫防御,将更有助于我们控制这些具有严重危害性的寄生性甲藻     

The family of huntsman spiders in Israel with annotations on species of the Middle East (Araneae: Sparassidae)

The spiders of the family Sparassidae in Israel have been described and species of the Middle East and from adjacent faunae have been revised. They are amongst the main predatory spiders of the Old World deserts although some also occur in less arid environments. Systematic and ecological information is presented and patterns of their zoogeographic distribution are discussed. Type and non-type material pertinent to the faunae investigated, deposited in a great number of European collections, has been re-examined. Nearly all species have never been adequately described or illustrated. The genus Cerbalus , species of which have never before been recorded in Asia, is revised. Nonianus is likewise a new Asiatic record while Olios and Heteropoda are reported for the first time from Israel. The African Micrommata longipes Bösenberg & Lenz, 1895 is transferred to Pseudomicrommata, Cerbalus concolor Denis,1947 is newly placed in Cerbalopsis , and a new synonymy of the genus Marmarica Caporiacco,1928 with Cerbalus Simon, 1897 has been proved. The following new synonyms are defined: Heteropoda civilis (Reuss, 1834) together with Sparassus tersus (C. L. Koch, 1838), S. validus Thorell, 1875, S. cognatus O.P.-Cambridge, 1876, 5. fontanieri Simon, 1880, and Eusparassus kronebergi Denis,1958 = Sparassus walckenaeri (Audouin, 1827); Cerbalus angustifrons Denis,1960, and C. sahariensis Jézéquel & Junqua,1966 = Cerbalus pulcherrimus (Simon, 1880); Olios impediens Denis,1947 = Olios suavis (O.P.Cambridge, 1876), new combination; Cebrennus sparassoides Caporiacco, 1921 = Cebrennus castaneitarsis Simon, 1880. Two new species are described: Cerbalus psammodes and C. negebensis. Key to the genera and detailed illustrations of diagnostic characters are provided for each species, and are readily applicable to species of adjacent countries.     

Injection drug use and HIV/AIDS transmission in China

After nearly three decades of being virtually drug free, use of heroin and other illicit drugs has re-emerged in China as a major public health problem. One result is that drug abuse, particularly heroin injection, has come to play a predominant role in fueling China＇s AIDS epidemic. The first outbreak of HIV among China＇s IDUs was reported in the border area of Yunnan province between China and Myanmar where drug trafficking is heavy. Since then drug-related HIV has spread to all 31 provinces, autonomous regions and municipalities. This paper provides an overview to HIV/AIDS transmission through injection drug use in China. It begins with a brief history of the illicit drug trade in China, followed by a discussion of the emergence of drug related AIDS, and a profile of drug users and their sexual partners who have contracted the virus or who are vulnerable to infection. It ends by summarizing three national strategies being used by China to address both drug use and AIDS as major health threats.