The present study was undertaken to investigate the safety of kaempferol (KEM) and biochanin-A (BCA) following subacute exposure in mice. KEM and BCA were administered in three different doses by oral administration for 28 days. Evaluation of general toxicity parameters by examining the clinical signs, body weight, organ weights, haematological, biochemical, oxidative stress parameters, and histopathology was done. Administration of KEM and BCA for 28 days did not show any clinical signs of toxicity, nor any treatment-related changes in body weight and organ weights in comparison to control. The haematological parameters such as red blood cell, white blood cell, platelets count, haemoglobin (Hb) level, haematocrit, mean corpuscular haemoglobin concentration, red cell distribution width, and platelet distribution width did not show any change in the treated groups and control. Furthermore, different biochemical parameters like markers of the liver (alanine aminotransferase and aspartate aminotransferase), kidney (creatinine and urea), and heart (creatinine kinase-myocardial band and lactate dehydrogenase) injury along with other biochemical parameters showed nonsignificant differences between treated groups and control. Results of oxidative stress parameters in treated groups showed insignificant variations with control. The level of antioxidant enzymes such as superoxide dismutase and catalase were markedly increased in the treated groups; however, these were nonsignificant in comparison to control. In histopathology, evaluation of all vital organs, such as liver, kidney, heart, and lungs, did not show any morphological abnormalities and lesions in treated groups and control. The present study suggests that KEM and BCA have no adverse effects on the general physiology in mice.
Disposition of antimicrobials is known to be altered during disease conditions and fever is one of the common manifestations of bacterial infections in animals. The disposition of lincomycin (10 mg/kg, IV) during Echerichia coli endotoxin-induced fever in goats followed two compartment open model and drug was detected in plasma up to 8 h. The high AUC (39.5±6.21 g.h/mL) indicated good antibacterial activity of lincomycin in goats. The volume of distribution and total body clearance were 3.35±0.45 L/kg and 0.28±0.03 L/h/kg, respectively. The long elimination half life 9.93± 2.83 h indicated persistence of drug for longer period in body. Lincomycin, is suggested to be repeated at 24 h interval for organisms sensitive to lincomycin having MIC up to 0.6 µg/mL for the treatment of bacterial infections manifested with fever in goats.
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