Daba S, Mansour N S, Youssef F G, Shanbaky N M, Shehata M G, el Sawaf B M
U.S. Naval Medical Research Unit No. 3, Cairo, Egypt.
J Egypt Soc Parasitol. 1997 Dec;27(3):629-37.
Protein digestion in the gut of Phlebotomus langeroni (Nitzulescu) was studied at four subsequent 24 hour intervals post feeding on human, dog (Canis familiaris), rat (Rattus rattus) and turkey (Melagris gallopava) bloods with and without Leishmania infantum or L. major promastigotes. Most of the proteins of the studied blood meals were digested within 96 hours. The percent of blood proteins digested in the first 48 hours was higher than in the second 48 hours in all cases of the studied blood meals except the normal blood of the turkey in which the ratio of the digested blood proteins in the two periods was 1:1. During the first 48 hours, the percent of the digested blood proteins was lower than normal in the presence of L. infantum in case of human and dog blood meals. The reverse was true in case of the rat and turkey blood meals in the presence of L. infantum and in the blood meals from each of the four vertebrate hosts in the presence of L. major. The significance of these findings in considering L. infantum as a natural parasite of P. langeroni in El Agamy focus was discussed.
在以人类、狗（家犬）、大鼠（黑家鼠）和火鸡（原鸡）血液为食后，每隔24小时连续四个时间段，研究了朗氏白蛉肠道内蛋白质的消化情况，血液中有无婴儿利什曼原虫或硕大利什曼原虫前鞭毛体。所研究血餐中的大多数蛋白质在96小时内被消化。在所研究血餐的所有情况下，除了火鸡的正常血液中两个时间段消化的血蛋白比例为1:1外，前48小时消化的血蛋白百分比高于后48小时。在人类和狗的血餐中，存在婴儿利什曼原虫时，前48小时消化的血蛋白百分比低于正常水平。在存在婴儿利什曼原虫时，大鼠和火鸡的血餐以及存在硕大利什曼原虫时来自四种脊椎动物宿主的血餐情况则相反。讨论了这些发现对于将婴儿利什曼原虫视为埃尔阿加米疫区朗氏白蛉自然寄生虫的意义。
