ABSTRACT
The present paper deals with the rich avifauna available at Jamwa Ramgarh Lake of Rajasthan in India. More than 100 species of birds belonging to 38 families were recorded at lake during the year 2002, maximum species were sighted during the winter season. Due to scanty rainfall in 2002, this lake was also affected and had only one-fourth of water of its total capacity, which affected the numbers of migratory waterfowl also. In the wetland most water birds were found to be migratory and few being resident. Some rare, endangered, uncommon, vulnerable, threatened and near threatened species of birds those already listed in Red Data Book were sighted.
Subject(s)
Animals , Biodiversity , Birds/classification , Conservation of Natural Resources , Fresh Water , India , Population Dynamics , Species SpecificityABSTRACT
The present study has been aimed to investigate the protective effect of beta-carotene against radiation-induced oxidative stress in mice tissues using lipid peroxidation and glutathione (GSH) as end points. Fourteen days oral priming administration of beta-carotene (35 mg/kg body weight) followed by an acute dose of gamma radiation (5 Gy) inhibited the augmented level of thiobarbituric acid reactive substance (TBARS) and a statistically significant protection against GSH depletion. Results evaluated from this study clearly indicate the antioxidative property of beta-carotene against gamma radiation, which is suggestive of free radical scavenging and singlet oxygen quenching.
Subject(s)
Animals , Antioxidants/pharmacology , Brain/metabolism , Gamma Rays , Glutathione/drug effects , Kidney/metabolism , Lipid Peroxidation/drug effects , Liver/metabolism , Lung/metabolism , Male , Mice , Spleen/metabolism , Testis/metabolism , Thiobarbituric Acid Reactive Substances/metabolism , beta Carotene/pharmacologyABSTRACT
Magnetic fields seemingly alter a number of physiological indicators in intact animals and influence cellular metabolism. We have studied the magnetic field effects on the membrane and receptors of the reticulo-endothelial cells of bone marrow which are mainly responsible for the phagocytic activity of nanocolloid particles of human serum albumin tagged with Tc99m. A series of experiments carried out on immobilized mice exposed to a static 1.4 T SMF for 60 min at 27 degrees C or 37 degrees C body temperature showed an increased phagocytic activity at 37 degrees C and decreased activity at 27 degrees C.
Subject(s)
Animals , Female , Humans , Magnetics , Mice , Phagocytosis , TemperatureABSTRACT
Pregnant Swiss albino mice were maintain on tritiated drinking water of the activity of 111 and 11.1 kBq/ml after a priming injection of 74 and 7.4 kBq/ml body water respectively from 17th day of gestation till parturition. Animals were autopsied on 1, 2, 3, 4, 5 and 6 weeks postpartum and studied for cerebellar vulnerability. Cerebellum suffered from radiopathological changes in 1, 2 and 3 weeks age groups of mice in terms of degeneration and loss of Purkinje cells leading to formation of empty basquets, vacuolation in molecular layer and interfoliar connective tissue and pycnosis in granule cells of granular cell layer at 11.1 kBq dose level. Mice of 4, 5 and 6 weeks age groups, being relatively radioresistant, showed lesser changes in comparison with 1 to 3 week old mice. Though, the nature of the damage remained the same, it tended to intensify at 111 kBq dose thereby reflecting a dose dependent variation.