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使用新型定量PCR标记物在两动物中普遍和有效地检测杆菌感染

Gayathri Sreedharan¹, Yashwant Singh Panwar¹, Saketh Murthy¹

¹CSIR-Centre for Cellular and Molecular Biology, Hyderabad, India.

Transboundary and emerging diseases

|April 30, 2025

概括

奇特里多米科斯是一种破坏性两动物疾病,由Batrachochytrium dendrobatidis (Bd) 引起,需要改进诊断. 一种新的qPCR分析提供了灵敏和特定的检测,有助于全球两动物保护工作.

科学领域:

类学类学类学类学
野生动物病理学野生动物病理学
分子诊断学分子诊断

背景情况:

由Batrachochytrium dendrobatidis (Bd) 和B. salamandrivorans (Bsal) 引起的cytridiomycosis是一种严重的野生动物传染病,影响全球两动物的多样性.
目前Bd的诊断试验对某些单元型缺乏敏感性,这阻碍了有效的疾病监测和管理.
大约40%的两动物物种面临着由于菌菌病的衰退,需要改进的监测工具.

研究的目的:

开发一种通用的,敏感的,特定的,可复制的,负担得起的诊断试验,用于对Batrachochytrium dendrobatidis (Bd) 的稳健检测.
为了验证新设计的一步式SYBR绿基定量聚合酶连锁反应 (nSYBR qPCR) 试验的有效性.

主要方法:

一个针对Bd基因组的5.8SrRNA和ITS2区域的新型原料对的设计和in-silico测试.
对比新的nSYBR qPCR试验的灵敏度和特异性与使用两动物皮肤拭片和培养动物的TaqMan-based qPCR试验.
使用印度的样本进行验证,此前使用嵌套PCR进行了测试,并应用于各种两类 (Anura,Caudata,Gymnophiona).

主要成果:

新设计的初始对证明了特定的Bd基因组段的强大放大.
在检测Bd方面,nSYBR qPCR试验的效率与现有的基于TaqMan的qPCR试验相美.
在印度两动物中检测到具有不同感染负载的广泛的胆菌病,包括Anura,Caudata和Gymnophiona.

结论:

开发的nSYBR qPCR测定是敏感和特定Bd检测的可靠工具.
这种试验可以促进在以前诊断能力有限的地区广泛监测皮菌病.
改进的诊断将提高对Bd水库的理解,并为有效的两动物保护战略做出贡献.

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