毒性因子和分子识别的Candida 种在洪都拉斯的菌病引起的菌病
José Fernando Chávez1, Bryan Ortiz1, Roque López2
1Instituto de Investigaciones en Microbiología, Facultad de Ciencias, Universidad Nacional Autónoma de Honduras, Tegucigalpa 11101, Honduras.
Journal of fungi (Basel, Switzerland)
|September 23, 2025
概括
洪都拉斯的侵入性真菌感染越来越多地是由非白虫Candida物种引起的. 准确的分子鉴定对于有效的抗真菌治疗和监测至关重要.
科学领域:
- 医学真菌学 医学真菌学
- 传染性疾病 传染性疾病
- 公共卫生 微生物学
背景情况:
- 侵袭性真菌感染 (IFI) 构成了严重的全球健康威胁,特别是由Candida物种引起的真菌感染.
- 高死亡率和日益增长的抗真菌耐药性是主要问题.
- 洪都拉斯国际金融机构的流行病学数据有限.
研究的目的:
- 为了描述导致洪都拉斯候选病的Candida物种.
- 评估单独的Candida菌株的关键毒性因素.
- 为当地抗真菌治疗和监测策略提供信息.
主要方法:
- 从洪都拉斯的Tegucigalpa和圣佩德罗苏拉的四家医院收集了80个临床Candida分离体.
- 采用了表型和分子方法来识别物种.
- 评估了毒性因素,包括血液溶解活性,脂酶和蛋白酶的产生,以及生物膜的形成.
主要成果:
- 最常见的物种是Candida albicans和Candida tropicalis (分别为30%),其次是Candida parapsilosis (27.5%).
- 现型识别方法显示,误认率为13.8%.
- 大多数分离物 (96.3%) 显示出强烈的溶血活性;C. albicans具有最高的脂酶活性,C. tropicalis表现出最强大的生物膜形成.
结论:
- 洪都拉斯显示出不断发展的Candida流行病学,非白虫物种的增加,可能会影响抗真菌易感性.
- 观察到不同的毒性特征,包括显著的生物膜形成.
- 准确的分子诊断和持续监测对于指导抗真菌疗法和开发局部干预措施至关重要.
相关概念视频
Cryptococcal Meningitis
Cryptococcal meningitis is a life-threatening opportunistic infection predominantly associated with HIV/AIDS, accounting for over 100,000 deaths annually worldwide. However, it also affects individuals with other forms of immunosuppression, including those undergoing immunosuppressive therapy, organ transplant recipients, patients with innate immunodeficiencies, and individuals with hematological disorders. The infection is caused mainly by Cryptococcus neoformans and Cryptococcus gattii,...
Candidiasis
Candidiasis is a fungal infection caused by opportunistic species of Candida. It can affect various anatomical sites, including the skin, oral cavity, nails, and genitourinary tract. Among its forms, vaginal candidiasis is the most common type of mucosal infection. It typically results from the overgrowth of Candida albicans in the vaginal mucosa. Under normal conditions, C. albicans exists as a commensal organism within the vaginal microbiota, regulated by the dominance of lactobacilli, which...


