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Biomedical subjects

S N Sharma

Publications and source records attributed to S N Sharma.

At least 73 records · Page 4Linked to original sources
PubMed1991

Observations on the breeding of anophelines in rice fields of Shahjahanpur district, Uttar Pradesh.

Studies on ecological succession and association of anophelines in selected paddy fields of Dadraul PHC were carried out in 1988 during the paddy cultivation period from June to October. Breeding of five anophelines was observed in paddy fields. Out of the adults that emerged from larval collections the percentage of An. subpictus was the highest followed by An. nigerrimus, An. culicifacies, An. annularis and An. barbirostris. Further, An. culicifacies and An. subpictus breeding occurred in the early stage of rice cultivation and stopped before the breeding of An. nigerrimus started i.e., nearly 30 days after rice transplantation. An. nigerrimus breeding continued till harvesting. An inverse correlation between larval density of both An. culicifacies and An. subpictus and the height of the rice plants was observed.

Animals↗
PubMed1991

Bionomics of Anopheles culicifacies giles in riverine tract rural areas of district Shahjahanpur, Uttar Pradesh.

Studies on seasonal prevalence, resting behaviour, gonotropic conditions and breeding habits of Anopheles culicifacies were carried out from January 1987 to December 1989 in riverine villages of Dadraul PHC in Shahjahanpur district, Uttar Pradesh. Man hour densities of An. culicifacies varied from 11.3 to 125.1 during the study period. The species showed two peaks of high prevalence: one during March to June and the other during October to December. The first peak was higher than the second. The collection revealed a higher proportion of freshly fed to semi-gravid females thus indicating the outdoor resting behaviour of the species. From the immatures collected from riverbed pools, 7 anopheline species were identified. Of the 955 specimens identified, An. culicifacies constituted the highest number (62.1%). The study indicates that low rainfall and drought did not affect An. culicifacies densities or malaria transmission in riverine areas.

Animals↗
PubMed1990

Immune response of chicks to oral vaccination with combined extra- and intracellular fowl pox viruses.

The immune response of chicks to oral vaccination with HP1-strain of fowl pox virus was studied using intracellular virus alone or a combination of intra and extracellular viruses. The first and second vaccinations were done at four days and 25 days of age, respectively. In both groups the birds showed 50% protection against challenge virus at 32 days of age while no immunity was recorded at 95 days of age. The serum IgG concentration in both the vaccinated groups was comparable and it was significantly higher (P less than 0.05) than the control birds one week after revaccination. The serum haemolytic complement activity in both the vaccinated groups was significantly lower (P less than 0.05) than the control birds.

Administration, Oral↗
PubMed1990

Immune response of chicks to oral vaccination against Newcastle disease and fowl pox.

The humoral immune response and immunity conferred in chicks were compared following separate and combined oral vaccination with F strain of Newcastle disease virus (NDV) and HP1 strain of fowl pox virus. The haemagglutination inhibition (HI) antibody titre against NDV and passive haemagglutination (PHA) antibody titre against fowl pox virus were comparable in two respective groups. The serum IgG concentration increased significantly after the second vaccination in all the groups. The NDV vaccine induced significantly higher IgG production as compared to fowl pox virus vaccine. There was no significant difference in serum IgG concentration produced by combined vaccine and separate F strain vaccine. The protection afforded by combined and separate vaccinations did not vary significantly against challenge with virulent strains of NDV and fowl pox virus at different stages.

Administration, Oral↗
PubMed1989

Pulmonary arterial anatomy in tetralogy of Fallot.

We have searched for any abnormalities of the pulmonary arteries visualized by angiography in 200 consecutive patients with tetralogy of Fallot. All the patients were studied by conventional right ventricular angiography in the right and left anterior oblique views. Thirty six patients (18%) showed a total of 61 pulmonary artery stenoses, 32 being severe (52%), 17 moderate (28%) and 12 mild (20%). Bifurcational stenoses were the most common (31), followed by stenosis of the main pulmonary trunk, the right or the left pulmonary arteries (22), combined central and peripheral stenosis (6), and isolated peripheral pulmonary artery stenosis (2). Nine patients showed segmental stenosis involving both the right and left pulmonary arteries and three of them had atresia of the left pulmonary artery. The detailed preoperative evaluation of obstruction within the pulmonary arterial pathways is essential in tetralogy of Fallot to ensure normalisation of the right ventricular pressure following total correction.

Adolescent↗
PubMed1989

Frontoethmoidal meningoencephalocystocele.

A rare variety of frontoethmoidal meningoencephalocystocele is reported. Transillumination of the mass and cross-fluctuation to the anterior frontanelle are diagnostic. Herniation of the anterior horn of the lateral ventricle is probably being reported for the first time.

Encephalocele↗
PubMed1989

Outbreak of cholera in Berasia block of Bhopal District in Madhya Pradesh.

Bhopal district, Madhya Pradesh has been considered to be free of cholera. In an outbreak of gastro-enteritis in Berasia block of Bhopal district, Cholera vibrio Inaba and Ogawa were isolated from 17.64 per cent of stool samples collected. Extreme insanitary conditions, large aggregation of uncontrolled population and probably consumption of infected ice candies were responsible for the outbreak of cholera.

Adolescent↗