中国寄生虫学与寄生虫病杂志 ›› 1998, Vol. 16 ›› Issue (1): 14-67.

• 实验研究 • 上一篇    下一篇

酚红指示法检测长须白蛉肠道酸碱度的变化(英文)

唐银山   

  1. Nestor Aez Facultad de Ciencias; Universidad de Los Andes; Merida 5101; Venezuela Paul A.Bates Liverpool School of Tropical Medicine; Pembroke Place; Liverpool L3 5QA; UK;
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:1998-02-28 发布日期:1998-02-28

PHENOL RED METHOD FOR MEASURING THE pH OF THE GUT CONTENTS IN LUTZOMYIA LONGIPALPIS (PSYCHODIDAE:DIPTERA)

Yinshan Tang   

  1. Nestor Aez Facultad de Ciencias; Universidad de Los Andes; Merida 5101; Venezuela Paul A.Bates Liverpool School of Tropical Medicine; Pembroke Place; Liverpool L3 5QA; UK;
  • Received:1900-01-01 Revised:1900-01-01 Online:1998-02-28 Published:1998-02-28

摘要: 目的:作者建立酚红指示法检测长须白蛉中肠酸碱度用于检测在中肠不受损伤的情况下其内含物酸碱度的变化。方法:用玻璃微管强迫长须白蛉Lutzomyialongipalpis吸食少量50%饱和酚红溶液至中肠。解剖后,观察肠道内各部位的颜色,用以显示其内含物的酸碱度。结果:饲糖组白蛉胸部中肠(TMG)的酸碱度一般呈中性,pH7.0-7.3;腹部中肠(AMG)呈弱碱性,pH7.1-8.4,并且从前往后逐渐增高。如果嗉囊中有糖残留,TMG的pH可降至6.8。饲血组TMG酸碱度在吸血后1—3d内可达pH7.4,但随着血液的逐步消化,其pH则逐渐降至或低于6.8。此时期pH的降低,是利什曼感染型发生期。结论:本法可用于检测白蛉中肠的pH,具有简便准确等优点,通过对pH变化的检测,可间接反映肠道内利什曼感染型的发展变化。

关键词: pH值测试, 毛蛉科, 罗岭属, 白蛉中肠, 酚红, 利什曼原虫

Abstract: AIM:To develop a method to estimate the pH of the gut contents of female sandflies using a microcapillary feeding technique.METHODS:Female Lutzomyia longipalpis were fed with a small quantity of phenol red solution (indicator range pH 6.8 8.4) before and after a bloodmeal.The colour patterns of the gut contents were recorded by video microscopy immediately after the alimentary canal was dissected out of the sandfly body,and used to deter...

Key words: pH detection, Psychodidae, Lutzomyia, sandfly gut, phenol red, Leishmania