Browsing by Author "Kumar, Sarita"
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Item Effect of Cold Hexane Extract of Karanja (Pongamia Glabra Vent) Seed Kernel on the Development of Mosquito Larvae.(2009-12) Sagar, S K; Kumar, Sarita; Bora, DCold Hexane extract of karanja, Pongamia glabra Vent (Fabaceae) seed kernel (HKSK) ranging at the concentrations of 4 ppm to 28 ppm was evaluated against the freshly emerged larvae of Aedes aegypti and Culex quinquefasciatus. Treatment of HKSK imparted the mortality that was correlated with the level of dosage. Before pupation,100% fatality occurred in Ae. aegypti at a concentration of 20 ppm whereas in Cx. quinquefasciatus the same degree of mortality occurred at the extract concentration of 12 ppm in the first instar larvae only. At low doses, the emerging adults of Cx. quinquefasciatus had deformed legs, wings and truncated abdomen but the adults of Ae. aegypti showed no deformities. The developmental period was prolonged significantly in a dose-dependent manner for both the species treated. In Cx. quinquefasciatus this effect was more pronounced because of increased intermoult period showing an IGR effect of the extract. The calculated growth index also decreased in dose-dependent manner significantly more in Cx. quinquefasciatus. Indeed, Ae. aegypti appeared more susceptible to HKSK than Cx. quinquefasciatus.Item Incomplete monosymptomatic leptomeningeal angiomatosis.(2004-10-09) Kumar, Sarita; Muranjan, Mamta N; Tullu, Milind S; Lahiri, Keya RPhakomatoses or neurocutaneous syndromes are an important cause of seizures in the pediatric age group. The Sturge-Weber syndrome may affect the eye, skin and brain at different times. The skin lesions need not always manifest. We report a case of isolated affection of the central nervous system in a case of Sturge-Weber syndrome in the absence of ocular or cutaneous manifestations. Our case qualifies to be called incomplete monosymptomatic leptomeningeal angiomatosis.Item Microplate assay of elevated esterase activity in individual pyrethroid-resistant mosquitoes.(1994-06) Sahgal, Arunima; Kumar, Sarita; Pillai, M K KInvolvement of esterase-mediated hydrolysis as a mechanism of pyrethroidresistance in three species of mosquitoes, viz., Aedes aegypti, Culex quinquefasciatus and Anopheles Stephensi was investigated by microplate assay of β-esterases in individual larva and adult female and male mosquitoes. Assuming an absorbance value of 0·4 and above at 555 nm as the threshold level of elevated esterase activity which confers resistance, frequency distributions of such individual test mosquitoes were constructed in resistant and susceptible populations. The results indicate the involvement of ester hydrolysis of Pyrethroids as a predominant mechanism of pyrethroid-resistance in the larvae of Culex quinquefasciatus but not in Aedes aegypti. However, a marginal role of esterases is indicated in the larvae of Anopheles stephensi.Item An Observation on Contribution of Breeding of Aedes Aegypti Vector of Dengue And Chikungunya by Different Income Group Communities of Varanasi City, Uttar Pradesh, India.(2009-06) Kumar, Sarita; Katyal, Rakesh; Kumar, Kaushal; Patel, Sunita; Kamal, Shaukat; Bora, DItem Potential Risk of Dengue-DHF Transmission in a Selected locality of NCT Town Gurgaon , Haryana, India.(2010-03) Katyal, Rakesh; Kumar, SaritaItem Rabson-Mendenhall syndrome.(2005-02-02) Kumar, Sarita; Tullu, Milind S; Muranjan, Mamta N; Kamat, Jaishree RRabson-Mendenhall syndrome is characterized by growth retardation, dysmorphisms, lack of subcutaneous fat, acanthosis nigricans, enlarged genitalia, hirsutism, premature and dysplastic dentition, coarse facial features, paradoxical fasting hypoglycemia and post-prandial hyperglycemia, extreme hyperinsulinemia and pineal hyperplasia. We describe a six-month-old female child with physical features suggestive of the Rabson-Mendenhall syndrome. The child also had medullary nephrocalcinosis.Item Risk Factors involved in the transmission of Dengue-DHF in some selected localities of Jaipur (Rajasthan), India.(2011-03) Katyal, Rakesh; Mathur, K K; Kumar, Kaushal; Das, B P; Saxena, V K; Lal, Shiv; Kumar, Sarita