中国畜牧兽医 ›› 2021, Vol. 48 ›› Issue (3): 1013-1019.doi: 10.16431/j.cnki.1671-7236.2021.03.025

• 预防兽医 • 上一篇    下一篇

禽光滑念珠菌研究进展

张双, 郭禹, 薛文慧, 赵千惠, 霍书英   

  1. 河北农业大学动物医学院, 保定 071001
  • 收稿日期:2020-07-08 出版日期:2021-03-20 发布日期:2021-03-18
  • 通讯作者: 霍书英 E-mail:huoshuying@163.com
  • 作者简介:张双(1992-),女,河北张家口人,硕士生,研究方向:家禽真菌病,E-mail:532713018@qq.com
  • 基金资助:
    河北农业大学科研发展基金(JY2018005)

Research Progress on Poultry Candida glabrata

ZHANG Shuang, GUO Yu, XUE Wenhui, ZHAO Qianhui, HUO Shuying   

  1. College of Veterinary Medicine, Hebei Agricultural University, Baoding 071001, China
  • Received:2020-07-08 Online:2021-03-20 Published:2021-03-18

摘要: 光滑念珠菌逐渐发展成为禽念珠菌属第二大致病菌,该菌通常是口腔、食道、胃肠道的正常菌群,当机体免疫力下降时即表现出对宿主的致病性,菌株一旦进入血液便会扩散到全身,造成系统性念珠菌病。光滑念珠菌主要感染鸡和鸽,临床中以禽食欲减退、消瘦、发育迟缓、羽毛松散和精神沉郁为主要症状,剖检可见嗉囔黏膜表面形成白色假膜或白色圆形隆起溃疡,形似地毯状病变,俗称念珠菌症。光滑念珠菌侵染过程中以酵母形态存在,未见其菌丝形态,入侵时通过形成生物膜来逃避医学灭菌、消毒作用,利用黏附素家族形成的黏附素吸附入侵宿主,依靠水解蛋白酶等相关毒力因子破坏宿主细胞,从而表现出致病性。动物机体以巨噬细胞吞噬及氧化应激反应来抵抗光滑念珠菌的侵染,该菌则通过过氧化氢酶和超氧化物歧化酶两种解毒酶的表达及抗氧化剂谷胱甘肽和硫氧还蛋白的产生来解毒活性氧化物,从而在机体免疫攻击中幸存。为了应对光滑念珠菌感染造成的经济损失,长时间大规模的使用抗真菌药物导致光滑念珠菌耐药性不断增强,对一线抗真菌药物尤其是唑类药表现出高耐药性。研究者逐渐倾向于利用天然物质提取物来解决光滑念珠菌耐药性问题。现从光滑念珠菌病原学、毒力因子及致病性、流行病学、抗菌药物、检测技术等方面进行综述,以期为研制有效抗菌药物防治念珠菌病提供理论依据。

关键词: 光滑念珠菌; 病原学; 毒力因子及致病性; 流行病学; 抗菌药物

Abstract: Candida glabrata had gradually developed into the second largest pathogen in poultry Candida,which was usually a normal flora in the oral cavity,esophagus and gastrointestinal tract.When the immunity of the body decreased,it showed pathogenicity to the host,and with the increase of infection,once the strain entered the blood,it spread to the whole body,resulting in systemic candidiasis.Candida glabrata mainly infected chickens and pigeons.In clinic,the main symptoms was loss of appetite and emaciation,growth retardation,loose feathers and mental depression.Autopsy showed that white pseudomembrane or white round uplift ulcer was formed on the surface of crop mucosa,which was similar to carpet-like disease,commonly known as candidiasis.Candida glabrata existed in the form of yeast in the process of infection,and its mycelium morphology was not seen.During the invasion,Candida glabrata formed a biofilm to escape medical sterilization and disinfection,and used adhesin formed by adhesin family to absorb and invade the host.It could destroy host cells by hydrolyzing protease and other virulence factors,thus showing pathogenicity.The animal body used macrophage phagocytosis and oxidative stress to resist the infection of Candida glabrata.The bacteria detoxified actived oxides through the expression of catalase and superoxide dismutase detoxifying enzymes and the production of antioxidants glutathione and thioredoxin,thus survived immune attacks.In order to cope with the economic loss caused by Candida glabrata infection,the long-term and large-scale used of antifungal drugs led to the increasing of drug resistance,and Candida glabrata showed high drug resistance to first-line antifungal drugs,especially azoles.Researchers were increasingly inclined to use natural extracts to solve the problem of drug resistance of Candida glabrata.This paper reviewed the etiology,virulence factors and pathogenicity,epidemiology,antibiotics and detection techniques of Candida glabrata,in order to provide a theoretical basis for the development of effective antibiotics and more effective prevention and treatment of candidiasis in the future.

Key words: Candida glabrata; etiology; virulence factors and pathogenicity; epidemiology; antimicrobials

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