Krishnan Kannabiran

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Owing to the fact that the application of synthetic larvicide has envenomed the surroundings as well as non-target organisms, natural products of plant origin with insecticidal properties have been tried as an indigenous method for the control of a variety of insect pests and vectors in the recent past. Insecticides of plant origin have been extensively(More)
OBJECTIVE To evaluate the leishmanicidal activity of saponin, dasyscyphin C of Eclipta prostrata and sapogenin, gymnemagenol from Gymnema sylvestre leaves under in vitro conditions. MATERIALS AND METHODS Dasyscyphin C/Gymnemagenol were dissolved in phosphate buffered saline (PBS) and diluted with liquid medium to obtain concentrations ranging from 1000 to(More)
The antiviral activity of furan-2-yl acetate (C₆H₆O₃) extracted from Streptomyces VITSDK1 spp. was studied in cultured Sahul Indian Grouper Eye (SIGE) cells infected with fish nodavirus (FNV). The nodavirus infection in the SIGE cells was confirmed by reverse transcriptase-polymerase chain reaction (RT-PCR) and the antiviral activity of furan-2-yl acetate(More)
OBJECTIVES The aim of the present study was to evaluate the anticandidal activity of biologically synthesized silver nanoparticles using the culture filtrate of Streptomyces sp.VITPK1. MATERIALS AND METHODS Silver nanoparticles were synthesized using the culture filtrate of Streptomyces species isolated from brine spring located at Thoubal District,(More)
PURPOSE To characterize the nuclear oxalate binding protein and its involvement in hyperoxaluria. MATERIALS AND METHODS Rat and human renal cortical epithelial cell nuclear protein was isolated and studied. Renal nuclear histones were isolated by acid extraction and purified by ion exchange column chromatography. RESULTS Most of the 14C-oxalate binding(More)
The aim of the present study was to evaluate the cytotoxicity and antioxidant activity of 5-(2,4-dimethylbenzyl)pyrrolidin-2-one (DMBPO) extracted from marine Streptomyces VITSVK5 spp. The strain was isolated from sediment samples collected at the Marakkanam coast of Bay of Bengal, India. Systematic screening of isolates for anti-Aspergillus activity(More)
OBJECTIVE To evaluate the antidiabetic activity of an aqueous extract of the roots of Hemidesmus indicus on blood glucose, serum electrolytes, serum marker enzymes, liver microsomal P-450 enzymes, and lipid peroxidation in the liver and kidney of streptozotocin-induced diabetic rats. MATERIALS AND METHODS Effect of H. indicus extract on blood glucose was(More)
The aim of the study was to evaluate the biosorption of heavy metals by actinomycetes isolated from marine sediment samples collected at the Bay of Bengal coast of Puducherry, India. The effect of initial metal ion concentration, pH and biomass dosage on biosorption of chromium ions was investigated. The isolate showed initial metal ion concentration of 80(More)
The aim of the present study was to assess the larvicidal property of marine actinobacterial compound 5-(2,4-dimethylbenzyl) pyrrolidin-2-one (DMBPO) extracted and isolated from Streptomyces VITSVK5 sp. tested against the larvae of Rhipicephalus (Boophilus) microplus Canestrini (Acari: Ixodidae), Anopheles stephensi Liston, and Culex tritaeniorhynchus Giles(More)
Ticks and mosquitoes are ectoparasitic arthropods that can transmit a variety of diseases to humans and animals during blood feeding and causing serious infectious disorders. The purpose of the present study was to assess the acaricidal and insecticidal property of ethyl acetate extract and its compounds isolated from marine actinobacteria, Streptomyces(More)