Search PubMed⌕ Search

Biomedical subjects

K C Verma

Publications and source records attributed to K C Verma.

At least 19 recordsLinked to original sources
PubMed1994

Immunogenic activity of viral polypeptides of an Indian isolate of infectious bursal disease virus.

An Indian isolate of infectious bursal disease virus, i.e. IBDV-P/AD/81, was analysed for immunogenic activity of its structural polypeptides. Virus was purified from infected bursal homogenate by sucrose density gradient centrifugation. It showed five different structural polypeptides of 75.8, 45, 40.7, 33.1 and 27 kDa molecular weights in sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). Anti infectious bursal disease virus (IBDV) antibodies were tested using enzyme-linked immunosorbent assay (ELISA) and neutralization test (NT). Polypeptide 40.7 kDa (VP2) was known to have neutralizing epitopes. However, polyclonal anti VP2 failed to neutralize the virus. It was interpreted that VP2 had labile neutralizing epitopes which get altered confirmationally by SDS. Surprisingly, polyclonal anti 33.1 kDa (VP3) had mild neutralizing activity.

Animals↗
PubMed1993

Biological characterisation of an Indian isolate of egg drop syndrome-76 virus.

An isolate of egg drop syndrome-76 virus replicated best in primary chicken embryo liver cells and less well in duck embryo liver cells, duck embryo fibroblast cells and chicken embryo kidney cells. The cytopathic effect in chicken embryo liver cells was marked by the presence of round and refractile cells and detachment of cells from the glass surface. The intranuclear eosinophilic inclusion bodies were observed by 24 to 48 hours after infection. No virus multiplication was observed in primary quail embryo fibroblast cells, chicken embryo fibroblast cells or mammalian cells like Vero, BHK-21 and MDBK. Duck embryos supported the maximum growth of the virus, with allantoic fluid having the highest haemagglutinin titre, followed in order by chorioallantoic membrane, skin and internal organs. Chicken and quail embryos did not support the growth of the virus.

Adenoviridae Infections↗
PubMed1992

Ultrastructural studies on interaction of infectious bursal disease virus (IBDV) and aflatoxin B1 on chick embryo fibroblast cell culture.

Light and electron microscopic evaluation of chick embryo fibroblast (CEF) cell culture inoculated with graded doses (0.25, 2.5 and 25 micrograms/ml medium) of aflatoxin B1 with and without infectious bursal disease virus (IBDV) was undertaken. The light microscopy revealed degeneration, detachment and necrosis of fibroblasts and multiple plaques formation in IBDV infected group without and with (0.25, 2.5 micrograms) aflatoxin B1. The cultures infected with virus, with or without 25 micrograms aflatoxin B1 showed complete detachment from glass surface. Electron microscopy of these cultures showed marked pyknotic or bizarre shaped nuclei, pronounced degenerative changes in the rough endoplasmic reticulum (RER), mitochondria and the presence of multiple vacuoles in the cytoplasm. The viruses were spherical, arrayed, complete, generally closer to nuclei and RER and indistinctly membrane bound. The viruses were either localised or scattered in the cytoplasm. Cultures containing 25 micrograms aflatoxin B1 without or infected with virus showed marked necrosis of cells. In latter group only a few viruses were seen either in infected cells or free in culture. Control cultures failed to show cytopathic changes as observed in the other three groups.

Aflatoxin B1↗
PubMed1984

Prediction of the occurrence of Marek's disease in chickens on the basis of the quantitation of cell-mediated immunity.

Cell mediated immunity was assayed in chickens on the basis of the dinitrochlorobenzene skin test, T lymphocyte numbers in peripheral blood and the graft-versus-host reaction. It was found that chickens that were to develop clinical Marek's disease following exposure to Marek's disease virus had significantly lower prechallenge levels of cell mediated immunity than those that were resistant to Marek's disease. The graft-versus-host reaction had a smaller coefficient of variation than the other two tests, and it was concluded that this test is likely to be the most reliable indicator of the outcome of infection with Marek's disease virus.

Animals↗
PubMed1983

A study of serum fibrinolytic activity in erythema nodosum leprosum (ENL).

Fibrinolytic activity was studied in 31 patients of leprosy and 10 healthy controls. Fibrinolytic activity was found to be significantly decreased in patients with erythema nodosum leprosum, compared to those with uncomplicated lepromatous leprosy, who in turn showed lowered activity compared to patients with tuberculoid form of leprosy and controls. The severity of ENL correlated very well with decrease in fibrinolytic activity. Fibrinolytic activity was improved to levels obtained in uncomplicated lepromatous leprosy after the subsidence of reaction. So it would seem reasonable to suggest that estimation of fibrinolytic activity provides a reliable criteria to quantitate the severity of erythema nodosum leprosum.

Adolescent↗
PubMed1982

Premature baby.

Explore the source record for details and available documents.

Fat Emulsions, Intravenous↗
PubMed1981

Applicability of Ridley-Jopling scale in clinical practice.

27 cases (90%) out of 30 cases studied could be graded clinically exact points of the scale. Out of the rest of 3 cases (10%); 2 cases (6.6%) required in between points of the scale. 20 cases (66.66%) out of the 30 cases studied histologically could be graded at exact points of the scale. 3 cases (10%) required further histological subgrading. Final clinico-histopathological clubbing was possible in 66.66% of cases. Disparity was observed at BT and BL points and cent percent parity was obtained at polar ends. Patients presenting with macular or early infiltrative lesions at BT and BL points showed an indeterminate histology.

Humans↗
PubMed1980

Oral zinc sulphate therapy in acne vulgaris: a double-blind trial.

The effect of zinc sulphate and placebo was compared in a double-blind trial in 56 patients suffering from acne vulgaris. Serum vitamin A levels were studied in all, before and at the end of therapy, 29 patients received zinc sulphate 600 mg daily and 27 patients received placebo. Patients on placebo showed no improvement. After 12 weeks of treatment with zinc sulphate, 17 patients (58%) showed significant improvement. There was a statistically significant decrease in the number of papules, infiltrates and cysts. In zinc-treated cases there was statistically significant increase in serum vitamin A levels, while no change was found in the placebo group.

Acne Vulgaris↗
PubMed1979

Papillon-Lefevre syndrome.

Two cases of Papillon-Lefevre Syndrome (PLS) in a family are reported. Association of recurrent infections, arachnodactyly, intracranial calcification and phalangeal abnormality have been observed. Because there is no history of consanguinity, and autosomal recessive pattern of inheritance is suggested.

Child↗