جستجوی مقالات مرتبط با کلیدواژه « tobacco » در نشریات گروه « دامپزشکی »

In this study sedative effect of Clove extract and Tobacco extract and tricaine methane sulfonate (MS???) on some organs of common carp (liver and gills) was studied. ??? common carp were divided to ? groups (? Clove extract ?? mg/l and ?? mg/l, ? Tobacco extract ?? mg/l and ?? mg/l and ? tricaine methane sulfonate (MS???) ?? mg/l and ?? mg/l for ? days and one group considered as control of study). Each group had ?? fish with ? replicates. In days ? and ? after sedation ? fish from each treatment were randomly selected and sampling was carried from the liver and gill. After fixation with ??% Formalin and routine procedures were performed in histopathological lab and Preparation of histopathological sections and staining sections, slides were examined. Histopathological examination revealed necrosis of lamella epithelium in Tobacco extract ?? mg/l group. In other groups of clove extract and methane sulfonate trichinae (MS???) no changes depend on this research were not seen in the liver and gills of fish. According to the microscopic results, clove extract has less pathological effects in comparison with Tobacco extract. More Histopathological research is definitely needed on the use of tobacco extract and clove extract in Aquaculture.

Tobacco (Nicotiana tobaccum) is a plant with piscicidal and fertilizing properties.

In this study the effect of different concentrations (0.1, 1, 10 and 100mg/l) of hydro-alcoholic extracts of tobacco has been examined on different tissues of Rainbow trout.

Samples from liver, kidney and gill of Rainbow trout were stained with hematoxylin and eosin and studied under light microscopy.

Various histopathological lesions were observed in the liver of Rainbow trout exposed to different concentrations of tobacco. The results showed that with increase in concentrations of tobacco up to 10 and 100mg/l, bloodshed increased and hepatocytes lost their continuity and showed discontinuity mood. Lamellar aneurysm, bleeding and leukocytes infiltration, clubbing at the end of the lamellae, hyperplasia of secondary lamellar epithelium, epithelial lifting of secondary lamellae and creating an edematous space, lamellar shortening, vacuolation and lamellar fusion were the more abundant branchial lesions after exposure to tobacco. Separating the epithelium from basement membrane, hypertrophy, glomerular capillary dilation and tubular degeneration were observed in renal tissues in all treatments. At higher concentrations of tobacco (10 and 100mg/l), renal tubular necrosis was also observed. According to the results liver of rainbow trout showed a few histopathological alteration following exposure to tobacco extracts. Unlike the liver, gills of rainbow trout due to direct contact with pollutants showed more lesions.

Tobacco extract has more pathological effects on gills in comparison with liver and kidney of Rainbow trout due to direct contact with the dissolved pollutant.