Browsing by Author "Chakravarty, S K"
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Item Clinical and virological studies on an outbreak of dengue-like fever.(1970-02-01) Sakar, J K; Ghosh, J M; Chatterjee, S N; Chakravarty, S KItem Coxsackie virus as one of the possible aetiologic agents of encephalitis in Calcutta.(1970-12-16) Chakravarty, S K; Das, A K; Khatua, S P; Sarkar, J KItem Coxsackie virus from blood of two cases of encephalitis.(1966-10-01) Sarkar, J K; Biswas, M L; Chatterjee, S N; Guha, S K; Chakravarty, S KItem Diagnosis of subclinical intestinal obstruction using hepatobiliary scintigraphy.(1997-10-14) Bhatnagar, A; Aggarwal, A; Mishra, P; Shankar, L R; Chakravarty, S KItem Evaluation of coronary artery disease by dipyridamole echocardiography test.(1994-11-01) Khan, A K; Roy, S; Dasbiswas, A; Bhattacharjee, R; Biswas, A; Choudhury, D; Chakravarty, S K; Chatterjee, S S; Maity, A KRole of oral dipyridamole echocardiography test (DET) was evaluated in 50 patients with effort angina. All patients underwent coronary angiography, the day after oral DET. The echo studies were performed at rest and 65 +/- 15 minutes after 300 mg of oral dipyridamole. Segmental wall motion was analysed in a 16 segment model and a wall motion score index (WMSI) was generated for the entire left ventricle both at rest and following the drug. WMSI was significantly higher after oral dipyridamole, (p < 0.001) compared to resting condition with increased sensitivity (86% vs 74%). When results of DET were compared with coronary angiography, the correlation of WMSI was statistically significant in three vessel disease (p < 0.001), two vessel disease (p < 0.001) as well as for left anterior descending lesions (p < 0.001). However, it was insignificant for single vessel disease, viz, right coronary artery and circumflex artery. Thus we conclude that oral DET is a safe, inexpensive, sensitive and non-exercise dependent method for demonstrating myocardial ischaemia with high diagnostic accuracy.Item Experimental studies on dengue type 2 infection of mice after injection of dengue type 1 antiserum.(1980-07-01) Sarkar, J K; Mitra, A C; Mukherjee, K K; Mitra, K K; Chakravarty, S K; Chakravarty, M S; Ganguli, NItem The first epidemic of Japanese encephalitis studied in India--virological studies.(1975-01-01) Chakravarty, S K; Sarkar, J K; Chakravarty, M S; Mukherjee, M K; Mukherjee, K K; Das, B C; Hati, A KItem Immunisation against sarcoma 180 in Swiss mice.(1968-06-01) Sarkar, J K; Chakravarty, S KItem Osteopoikilosis--report of four cases.(1995-10-01) Chakravarty, S K; Banerjee, A; Pahari, D K; Pahari, K; Ghosh, B BItem Re-survey for arbovirus antibody in the human sera after an interval of six years.(1969-09-01) Chatterjee, S N; Chakravarty, S K; Chakravarty, M S; Ray, S; Pal, S R; Sarkar, J KItem Seroepidemiological study of Japanese encephalitis in Dimapur, Nagaland.(1989-06-01) Angami, K; Chakravarty, S K; Das, M S; Chakraborty, M S; Mukherjee, K KA seroepidemiological study of Japanese encephalitis (JE) in Dimapur, Nagaland was carried out following an outbreak of the disease between July, 1985 and February, 1986. Altogether 50 persons were affected with 30 (60 per cent) deaths. The attack and death rates per 1000 were more in Nagas viz. 0.55 and 0.34 than non-Nagas viz. 0.33 and 0.20 respectively. All ages and both sexes were affected. Of the nine mosquito species encountered Culex vishnui showed the highest density (44.5/MH). Culture of mosquito pool did not yield any viral agent. A total of 311 serum samples comprising 95 humans, 166 animals and 50 birds were tested for the presence of haemagglutination inhibition (HI) antibodies against Chikungunya and three flavirus antigens, viz. JE, WN and DEN-2. The overall flavivirus HI antibody in humans was positive in 26 (27.3 per cent) almost identical to JE antibody prevalence. The per cent positivity of HI antibodies to JE, WN and DEN-2 were 42.2 per cent, 22.2 per cent and 13.3 per cent in the affected and 14.2 per cent, 10 per cent and 6 per cent in the unaffected area. The activity of Alpha (Chikungunya) virus though very low was significantly higher (chi 2 = 5.57) in the affected area. The prevalence of JE antibody was 77.7 per cent in dogs, 52 per cent in cattle, 34 per cent in pigs and 21.1 per cent in goats. Of the five species of birds, flavivirus and JE antibodies were detected in 21.4 per cent pigeons and 22.2 per cent heron egrettes. Neutralisation test established the distinct role of JE virus over other related flavivirus antigens.Item Survey of antibodies against chikungunya virus in the sera collected in Calcutta during 1964 and 1965.(1967-07-01) Chatterjee, S N; Chakravarty, M S; Chakravarty, S K; Ray, S; Sarkar, J KItem Susceptibility of new born and adult laboratory animals to Chikungunya virus.(1969-07-01) Chakravarty, S K; Sarkar, J KItem Transplant transmission of haemagglutination-inhibiting antibodies of pox and arboviruses.(1973-08-01) Sarak, J K; Chakravarty, S K; Ray, S N; Ray, I; Chakravarty, M S; Mukherjee, K K; Mitra, A C; Mukherjee, M KItem Two year study of arbovirus infection amongst the boarders of two hostels in Calcutta.(1977-07-01) Mukherjee, K K; Chakravarty, S K; Sarkar, J K; Chakravarty, M S; Roy, S; Das, B C; Mitra, AItem Virological studies on the epidemic of conjunctivitis in Calcutta.(1975-01-01) Roy, I; Sarkar, J K; Chakravarty, M S; Mukherjee, K K; Mukherjee, M K; Chakravarty, S K; Roy, I S; Mitra, B K; Sen, G CItem Virologically proved rubella cases in Calcutta.(1974-09-16) Sarkar, J K; Mukherjee, K K; Chakravarty, M S; Roy, I; Bose, A K; Chaudhuri, A; Das, B C; Chakravarty, S K