The Duration of the Life of the Embryos of Wuchereria Bancrofti in the Human System
نویسنده
چکیده
a positive attraction, chemical or otherwise, exerted by the Malpighian tubes of the mosquito upon the microfilaria) of dogs. Yamada and Yamamoto (1916) considered that the condition could be ascribed to oxygen chemotaxis, and Suganuma (1921) that the most important cause of periodicity was the strong negative heliotropism of the embryo. The last author showed that microfilariae were positively chemotropic to carbon-dioxide, urea, uric acid and grape-sugar, negatively to ammonia and light. Lynch (1919) favoured a mechanical explanation because he noticed that in the collapsed lung of a dog infected with Dirofilaria immitis the embryos accumulated in enormous numbers. Yorke and Blacklock
منابع مشابه
Nodule over Arm during Pregnancy: An Unusual Presentation of Filariasis
The aim of the article is to present a rare case of filariasis presenting as a nodule over arm in a pregnant lady which was diagnosed by fine needle aspiration cytology. Lymphatic filariasis is a major public health problem in India with most infections being caused by Wuchereria bancrofti. Clinical manifestations depend on the area of lymphatic involvement and the duration of infection. The pr...
متن کاملLymph Node Enlargement in Neck Filariasis as a Rare Cause: A Case Report
Lymphatic filariasis is endemic to tropical countries and is the most common cause of acquired lymphedema in the world. Wuchereria bancrofti is the main etiological agent responsible. While the presentation of filariasis in limbs is common, isolated presentation as a single enlarged lymph node in the neck is very rare. We describe a 48-year-old Indian woman, who presented with a hard lymph node...
متن کاملAmbient temperature effects on the extrinsic incubation period of Wuchereria bancrofti in Aedes polynesiensis: implications for filariasis transmission dynamics and distribution in French Polynesia.
Temperature effects on development of the human filarial parasite Wuchereria bancrofti (Cobbold) (Filaridea: Onchocercidae) in the main Pacific vector Aedes polynesiensis Marks (Diptera: Culicidae) are analysed in relation to ambient climatic conditions. A statistical model of the extrinsic cycle duration as a function of temperature is described and used to distinguish three patterns of W. ban...
متن کاملImmunocytochemical localization and distribution of human albumin in Wuchereria bancrofti adult worms.
To determine whether albumin is present on adult worms of Wuchereria bancrofti, thin sections of resin-embedded parasites were incubated with a specific antiserum to human albumin. With the exception of the epicuticle, all layers of the cuticle and the hypodermis were intensely labeled. Concentration of gold particles was observed within infoldings of the hypodermal membrane. Moderate labeling ...
متن کاملIn vitro cultivation of third stage larvae of Wuchereria bancrofti to fourth stage: influence of some physico-chemical factors.
It has been reported that third stage larvae (L3) of Wuchereria bancrofti strain from Jakarta, molted to the fourth stage (L4) in vitro, in a simple culture medium supplemented with 10% human serum. In the present study, this culture medium has been used to examine the effects of some physico-chemical parameters on larval growth, development and molting of Wuchereria bancrofti from India. Lymph...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 68 شماره
صفحات -
تاریخ انتشار 2016