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排序方式: 共有72条查询结果,搜索用时 15 毫秒
1.
The in vitro activity of seven azole compounds viz clotrimozole, isoconazole, bifanazole, fluconazole oxyconazole, Bay n 7133 and Bay L 9139 was investigated against 47 clinical isolates of pathogenic non-dermatophytic filamentous fungi and dermatophytic fungi. The isolates included Hendersonula toruloidea-26, Scytalidium hyalinium-5, Scytalidium japonicum-1, Trichophyton rubrum-5, Trichophyton tonsurans-3, Trichophyton mentagrophytes var. mentagrophytes-4, Epidemophyton floccosum-2, Microporum gypseum-2 isolates. The drugs were significantly more active against the dermatophytes (MIC range 0.025–1.56 g/ml) than non-dermatophytes (MIC range 0.39–6.25 g/ml). Isoconazole showed more activity than the rest of the azole compound tested. Clotrimazole, fluconazole, oxyconazole, bifonazole were comparable in their inhibitory activity against both dermatophytes and non-dermatophytes. The azole derivatives, Bay n 7133 and Bay L 9139 showed higher MIC range i.e. gave a range of 0.39–1.56 g/ml for dermatophytes and 1.56–6.25 g/ml for non-dermatophytic filamentous fungi. The minimal fungicidal concentration (MFC) of all the drugs tested were mostly within 2–8 times their MIC values. 相似文献
2.
Among Trichophyton spp. examined for urease production, T. rubrum was negative, whereas T. mentagrophytes appeared to be the most active species. Urease was not detected in cell-free culture fluids of the tested fungi. The endocellular urease of the test fungi was essentially constitutive. Moreover, addition of urea to the growth medium of these organisms markedly inhibited their mycelial biomass and ureolytic yield. Environmental factors showed variable effects on the test fungi and there was no correlation between mycelial growth and urease activity of these fungi. 相似文献
3.
Prof. Silvia Colla 《Plant biosystems》2013,147(3):557-584
Riassunto L'A. studia i movimenti degli stami di Berberis in natura: trova che nel bocciolo i movimenti sono dovuti a fatti di diversità di accrescimento e di evoluzione dei singoli tessuti: determina il momento e le condizioni fisiologiche in cui si iniziano e la sensibilità e le proprietà contrattili (movimento rapido): mediante osservazioni di tipo sperimentale prova che il movimento rapido di contrazione e quello lento di estensione non dipende da relazioni umorali o di altro genere tra il filamento e gli altri organi del fiore ma è unicamente proprietà intrinseca della cellula contrattile: basandosi su questo fatto e sui dati ottenuti negli altri lavori riporta ad un unico schema i vari movimenti che lo stame compie da quando ha acquistato la proprietà contrattile fino al suo distacco dall'asse fiorale. 相似文献
4.
Eastern cottontail (Sylvilagus floridanus, fam. Leporidae), introduced into Piedmont (Italy) in the 1960s, was studied as carrier of dermatophyte fungi. Of 216 hair samples collected
from animals culled between September 1999 and July 2000 in the Province of Alessandria (Piedmont, Italy) during a pest control
project, 57 (26.4%) yielded dermatophyte colonies. As two different species of dermatophytes grew from two samples, a total
of 59 fungal isolates (26.5%) were obtained. Six dermatophyte species both geophilic (M. gypseum, M. cookei, Trichophyton ajelloi, T. terrestre) and zoophilic (M. canis, T. mentagrophytes) were identified. No sex-related differences were found but season-related differences were observed. The highest prevalence
of dermatophyte-positive samples was recorded in May–September, due to the geophilic fungi whose prevalence decreased during
colder and increased during warmer months ( p < 0.001). The presence of zoophilic dermatophytes, T. mentagrophytes, commonly associated with rodents, small mammals and lagomorphs and M. canis, usually correlated with domestic environment, did not change the whole year round. As Eastern cottontail has been showed
to be a carrier of dermatophytes transmissible to man (M. canis, T. mentagrophytes and M. gypseum), it may represent a source of infection for gamekeepers, hunters and veterinarians. 相似文献
5.
目的对实验动物皮肤病原真菌2种培养方法进行了比较。方法将采集到的3只皮肤真菌感染病兔样品经由沙氏平皿法和沙氏试管斜面培养法分别进行培养。结果在3只真菌感染病兔中应用试管斜面法我们只检测到1例皮肤病原真菌阳性,而采用沙氏平皿法3例阳性全部检出。结论结合临床检测经验,我们认为本研究的沙氏平皿法优于沙氏试管斜面法,在实验动物皮肤病原真菌常规检测中具有推广应用价值。 相似文献
6.
AIMS: The increasing resistance to antifungal compounds and the reduced number of available drugs led us to search therapeutic alternatives among aromatic plants and their essential oils, empirically used by antifungal proprieties. In this work the authors report on the antifungal activity of Juniperus essential oils (Juniperus communis ssp. alpina, J. oxycedrus ssp. oxycedrus and J. turbinata). METHODS AND RESULTS: Antifungal activity was evaluated by determination of MIC and MLC values, using a macrodilution method (NCCLS protocols), on clinical and type strains of Candida, Aspergillus and dermatophytes. The composition of the oils was ascertained by GC and GC/MS analysis. All essential oils inhibited test dermatophyte strains. The oil from leaves of J. oxycedrus ssp. oxycedrus is the most active, with MIC and MLC values ranging from 0.08-0.16 microl ml(-1) to 0.08-0.32 microl ml(-1), respectively. This oil is mainly composed of alpha-pinene (65.5%) and delta-3-carene (5.7%). CONCLUSIONS: J. oxycedrus ssp. oxycedrus leaf oil proved to be an emergent alternative as antifungal agent against dermatophyte strains. delta-3-Carene, was shown to be a fundamental compound for this activity. SIGNIFICANCE AND IMPACT OF THE STUDY: Results support that essential oils or some of their constituents may be useful in the clinical management of fungal infections, justifying future clinical trials to validate their use as therapeutic alternatives for dermatophytosis. 相似文献
7.
目的了解近19年间上海地区脓癣的发病情况、病原菌及其变迁。方法选取头皮屑及头发真菌直接镜检阳性和(或)真菌培养为皮肤癣菌者,记录其临床表现、感染方式及动物接触史等。结果头癣患者1 009例,其中男性437例,女性572例;年龄20 d~93岁,平均10.44岁;脓癣114例(11.30%),其中男性44例,女性70例。年龄20 d~68岁,平均10.60岁,5~10岁最多见(45.61%),其次为5岁以下儿童(31.58%)。感染方式:发内型48例,发外型66例。真菌培养阳性的脓癣95例,其中犬小孢子菌29例(30.53%)、紫色毛癣菌21例(22.11%)、须癣毛癣菌19例(20.00%)、红色毛癣菌15例(15.79%)、断发毛癣菌7例(7.37%)、石膏样小孢子菌4例(4.21%)。脓癣的发病呈上升趋势,须癣毛癣菌脓癣尤为显著。结论上海地区脓癣主要发生于10岁以内儿童,犬小孢子菌是最常见的致病菌,发外型感染较发内型多见。 相似文献
8.
外瓶霉可致人类感染 ,不同生物群落的菌种 ,其致病性、药敏性等特征具有差异性。通过对 1 0株棘状外瓶霉核糖体基因及其转录间隔区进行序列测定 ,并与GeneBank中 9株同种真菌对比分析 ,揭示了不同生物群落的棘状外瓶霉虽然形态学差异性小 ,但在基因学上具有差异性 ;原属于甄氏外瓶霉变种的BMU 0 0 0 45 7(ATCC 2 41 5 2E .jeanselmeivar.hetoromorpha)与 2株棘状外瓶霉具有 1 0 0 %的同源性。研究提示了形态学特征相似的棘状外瓶霉在基因水平上具有差异性 ,核糖体基因及其转录间隔区对于研究菌群特性具有一定意义。 相似文献
9.
Rose McAleer 《Mycopathologia》1980,72(3):155-165
In order to determine which species of geophilic dermatophytes were present in Western Australian soils 299 samples were investigated. These samples were collected from a range of locations, 208 from towns throughout the state and 91 samples from the Perth Metropolitan area.Most samples were collected from areas frequented by people and animals, such as home gardens, parks and animal yards.Of the total 299 soils, 271 (90.6 %) yielded keratinophilic fungi. A total of 181 dermatophytes were isolated, and there were 205 isolations of other keratinophilic fungi.
Microsporum gypseum (30.7 %) was the most prevalent dermatophyte recovered from soil followed byMicrosporum cookei (21.7 %) and thenTrichophyton ajelloi (8.0 %). No other dermatophytes were recovered.Chrysosporium indicum was the most common of all the keratinophilic fungi and was isolated from 50.1 % of the samples. Mixed growth was obtained from 33.5 % of the soil samples. 相似文献
10.
The mycoflora of the hair in 178 goats from the West Bank of Jordan was analysed and the frequency of occurrence and the relative importance value for the different keratinophilic fungi found were calculated. One hundred and seven species which belong to 38 genera were isolated. Thirty six of these species were either well recognised agents of mycoses (Trichophyton mentagrophytes, T. verrucosum, and M. nanum), or have been frequently isolated from human and animal lesions (Arthroderma spp., Acremonium kiliense, Alternaria alternata, Aspergillus flavus, Cladosporium carionii, and several other species). These potentially pathogenic fungal species comprised 66.9% of all keratinophilic fungi found on the hair of goats. The role of this animal as a reservoir for dermatophytes and other potentially pathogenic fungi is discussed. 相似文献