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排序方式: 共有118条查询结果,搜索用时 281 毫秒
1.
Mónica Lowinger-Seoane Josep M. Torres-Rodríguez Neus Madrenys-Brunet Salvador Aregall-Fusté Pere Saballs 《Mycopathologia》1992,120(3):143-146
Retrospective studies have shown the occurrence of episodes of deep or superficial fungal infections in 58 to 81% of HIV/AIDS patients as a result of impairment of cell immunity. We describe a case of disseminated cutaneous dermatophytoses caused by Trichophyton mentagrophytes and Microsporum canis in a patients with AIDS. Diagnostic and therapeutic problems in relation to this unsual presentation are emphasized as well as the importance of an early mycologic diagnosis to prescribe antifungal therapy. 相似文献
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Four thiocyanatopyrazole derivatives were synthesized and their fungistatic activity was demonstrated in vitro against a number of dermatophytic fungi. In Trichophyton mentagrophytes, the most active compound induced an unusual increase of the plasma membrane with production of intra and extracytoplasmic complexes, a deterioration of nuclear and mitochondrial membranes and a formation of autophagic-like vacuoles. Plasmolysis, accompanied by an almost complete disorganization of cytoplasmic structures, seemed to be the final event. A possible mechanism of action of the compounds was discussed.Investigation supported by a grant from Consiglio Nazionale delle Ricerche of Italy (Contract No. 7500536). 相似文献
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Use of arbitrarily primed polymerase chain reaction to differentiate Trichophyton dermatophytes 总被引:7,自引:0,他引:7
Abstract Dermatophytes such as Trichophyton species are common human pathogens, the infection of which results in dermatophytosis (also known as ringworm). Several laboratory tests are used routinely for the diagnosis of dermatophytosis, but they are either slow or lacking specificity. Through examination of genomic DNA from Trichophyton dermatophytes and other fungi in arbitrarily primed PCR, it was shown that a random primer 5'-ACCCGACCTG-3' produced bands of 4.3 kb, 1.9 kb, 1.7 kb and 0.7 kb in T. rubrum DNA, bands of 2.5 kb, 1.9 kb and 0.8 kb in T. mentagrophytes var. interdigitale and T. mentagrophytes var. mentagrophytes DNA, and bands of 2.5 kb, 1.9 kb, 1.5 kb and 0.9 kb in T. tonsurans DNA. This primer amplified bands of different sizes in other fungal DNA. Therefore, based on the distinct band patterns observed in arbitrarily primed PCR using this primer, T. rubrum , T. mentagrophytes and T. tonsurans dermatophytes could be rapidly differentiated. 相似文献
5.
Lingling?Wang Li?Ma Wenchuan?Leng Jian?Yang Junping?Zhu Jie?Dong Ying?Xue Zhe?Wan Ruoyu?Li Qi?JinEmail author 《中国科学C辑(英文版)》2004,47(5):389-395
Trichophyton rubrum (T. rubrum) is the most common of the superficial fungi. In an effort to better understand the genetic and biochemical makeup ofT. rubrum, we generated cDNA libraries from 3 growth stages and used these to isolate 4002 unique expressed sequence tags (ESTs). Sequence
comparisons with the Genbank database allowed 1226 of the ESTs to be assigned putative functions or matched with homologs
from other organisms. Of the remaining ESTs, 989 were only weakly similar to known sequences and 1787 had no identifiable
functions, suggesting that they represent novel genes. We further analyzed the presence of several important genes involved
in the growth, metabolism, signal transduction, pathogenesis and drug resistance inT. rubrum. This information was used to newly elucidate important metabolic pathways inT. rubrum. Taken together, our results should form the molecular basis for continued research on the physiological processes and pathogenic
mechanisms ofT. rubrum, and may lead to a better understanding of fungal drug resistance and identification of new drug targets. 相似文献
6.
目的探讨我国不同地域红色毛癣菌分离株的遗传多样性。方法采用随机扩增DNA多态性(RAPD)方法对来源于我国不同地域(江苏南京,山东济南,广东广州)的32株红色毛癣菌临床分离株进行DNA多态性分析。结果红色毛癣菌种内差异明显,根据遗传相似性分成三大聚类群,与地域差异及取材部位无明显相关性,而与表型具有一定相关性。结论随机扩增DNA多态性方法可用于红色毛癣菌的DNA分型,其DNA带型具有一定的遗传变异性,与菌株表型有一定关系,与地域差异、侵犯部位无明显相关性。 相似文献
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目的了解新疆乌鲁木齐市浅部真菌病发病情况及其病原菌的菌种分布。方法对2004年2月至2010年08月在新疆医科大学第一附属医院皮肤科门诊就诊,临床拟诊为头癣、甲癣、体股癣、手足癣的1 308例患者取病发、皮屑、甲屑行真菌镜检、培养。培养阳性标本在形态学鉴定的基础上行核糖体DNA(rDNA)ITS区序列测定确切鉴定菌种。使用SPSS 17.0统计软件对于结果进行统计分析。结果真菌镜检培养均为阳性患者260例,头癣培养阳性率最高,占33.1%,其次为体股癣占28.8%、甲癣占21.5%、手足癣占16.5%;菌种鉴定:红色毛癣菌为最常见的致病菌(28.5%),其次为须癣毛癣菌(22.3%)、犬小孢子菌(18.8%)、断发毛癣菌(10.0%)。犬小孢子菌为头癣最主要致病菌(16.2%)。统计学分析显示:不同性别、族别间体股癣、手足癣发病率有统计学意义(P<0.05),均好发于男性,汉族发病率高于维吾尔族。不同年龄头癣、甲癣、体股癣、手足癣发病率差异也均有统计学意义(P<0.05),甲癣、体股癣、手足癣好发于中青年,头癣好发于儿童。结论乌鲁木齐市浅部真菌病主要致病真菌是红色毛癣菌。头癣是本地区最主要的儿童浅部真菌病,主要病原菌为犬小孢子菌。 相似文献
9.
Mahmoudabadi AZ 《Mycopathologia》2005,160(1):21-24
Two hundred and seventy nine patients suspected of having fungal lesions were examined. Skin scrapping, hair samples and nail clippings were collected from patients. Direct and culture examinations were performed for all samples. About 115 cases of examined subjects had dermatophytosis. Dermatophytosis occurred mainly in adults males (20–29 years). Tinea cruris (24.3%) was the most common type of dermatophytosis followed by tinea pedis (16.5%), tinea corporis (14.8%), tinea ungium (13%), tinea capitis (11.3%), tinea faciei (11.3%), tinea manuum (7%) and tinea barbae (1.7%). Trichophyton mentagrophytes was the most prevalent species followed by Epidermophyton floccosum. 相似文献
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