Exploration of cytotoxic effect of malathion on some rat organs structure

Widespread use of insecticides has caused several risks to public health. This work was designed to investigate the histological changes in Liver, lung, adrenal medulla and testis of Wistar rats treated with malathion, administered intra peritoneally at a dose of 33,051 mg/kg per day. Exposure to the malathion, for 40 days, induced histological alterations: regular arrangement of hepatocytes with dilated sinusoidal spaces, thickened Lung epithelium, regression of adrenal medulla with congestion and disruption of the germ Line. These alterations represent the signs of cytotoxicity of malathion in Wistar rats.

Exploration of the cytotoxic effects of an insecticide, lambda cyhalothrine, on sexual exocrine function in the white rat

Many xenobiotiques (solvents, pesticides, metals heavy.....) are suspected to be responsible for the fall of the male and female fertility. The purpose of this work is to study the insecticide impact, Lambda-cyhalothrine, managed by oral way during 7 days on the rat testicles histology. Wistar rats were given distilled water (controls) or containing 15,383 mg/kg or 23,075 mg/kg of Lambda-cyhalothrine. The exposure to this insecticide induced an increase in the diameters of the seminiferous tubes. The histological of the seminiferous tubes revealed deteriorations of the germinatif epithelium: blocking of the spermatogenesis, presence of the apoptotic cells and absence of the spermatozoids in certain lumens. All these histological alterations constitute a signs of cytotoxicity of Lambda-cyhalothrine on the male fertility in the Wistar rat.

Imagerie des pathologies vasculaires spécifiques

The diagnosis of vascularitis should be proposed when a concentric and regular thickening of the wall of the aorta or one of its branches is observed or when there is late enhancement of the arterial wall, on sites which are usually free from atheromatous lesions and in a young patient. The radiologist must be aware of the associated clinical signs: oral and genital ulcerative lesions in the Behçet syndrome; finger necrosis in a young male smoker in Buerger disease; hip and shoulder arthropathy and headache in a 70 Year old female and Horton disease; pulseless upper limbs and inflammatory syndrome in a young adult for the Takayasu arteritis. The diagnosis of popliteal entrapment or adventitial cyst should be proposed in young patients without atheromatous lesions.