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Biomedical subjects

U K Baveja

Publications and source records attributed to U K Baveja.

At least 37 records · Page 2Linked to original sources
PubMed1992

Kinetics of specific IgM in patients of hepatic amoebiasis.

Entamoeba histolytica (EH) specific IgM was measured in 54 patients with diagnosed amoebic liver abscess (ALA), 13 with non-suppurative hepatic amoebiasis (NSHA) and 50 controls. The mean levels of EH specific IgM, estimated by ELISA were significantly raised in patients of invasive amoebiasis (both ALA and NSHA) compared to controls (P less than 0.05). EH specific IgG was also raised in both groups of patients. Follow up of patients with ALA showed a significant decline (P less than 0.05) in the specific IgM levels three months after treatment while the specific IgG antibodies persisted in high titres (1:160). Only four patients of NSHA could be followed up and all showed a decline in specific IgM levels. Raised specific serum IgM seems to be an indicator of active (invasive) amoebiasis.

Adult↗
PubMed1991

Dot immunobinding assay versus sandwich ELISA in diagnosis of invasive amoebiasis.

Sera from 34 patients of amoebic liver abscess (ALA) and 11 patients with amoebic dysentery (AD) were examined for the presence of specific Entamoeba histolytica (EH) antibodies and amoebic antigen by enzyme linked immunosorbent assay (ELISA) and dot immunobinding assay (DIB). Both techniques were found to be equally sensitive for detecting antiamoebic antibodies (89.5 and 91.9% respectively) and highly specific (100%) in patients of ALA. ELISA was found to be more sensitive (94.4%) in detecting circulating amoebic antigen compared to DIB (68%) in patients of ALA. Specific antibodies, in significant levels, were detected in 3 and 5 patients of AD by ELISA and DIB assay, respectively. As DIB assay is easier to perform and less expensive, is recommended for detection of antibodies in patients with invasive amoebiasis.

Animals↗
PubMed1990

Enzyme linked immunosorbent assay for the diagnosis of human neurocysticercosis: a preliminary report.

The diagnostic efficacy of an indirect enzyme linked immunosorbent assay (ELISA) was evaluated in cases of neurocystecercosis. Subjects studied included 22 cases and 30 controls (comprising 12 cases of surgically confirmed hydatid disease, 5 cases each of tuberculoma and P.U.O. and 8 cases of pyogenic meningitis). A standard ELISA was performed using porcine cysticerci as antigen. Sensitivity and specificity of the test were calculated for serum and cerebrospinal fluid separately. The test was found to give a sensitivity of 68 and 33 per cent for serum and C.S.F. respectively. The specificity for confirmed case was found to be cent per cent for both with the criteria of reporting used. The sensitivity of the test may be increased by using purified specific antigen and/or sandwich ELISA instead of indirect ELISA technique.

Brain Diseases↗
PubMed1986

Isoenzyme studies of Giardia lamblia isolated from symptomatic cases.

Strains of Giardia lamblia were isolated from symptomatic cases of giardiasis and axenized in the laboratory. Electrophoretic mobility patterns of four enzymes, viz., EC 5.3.1.9 glucose phosphate isomerase (GPI); EC 1.1.1,4.0.L-malate; NADP+ Oxidoreductase (Oxaloacetate decarboxylating) (ME); EC 2.7.5.1 phosphoglucomutase (PGM); and EC 2.7.1.1 hexokinase (HK) of the lysates prepared from these isolates were studied using starch-gel. Based on differences in mobility patterns of PGM and HK, the four strains studied could be grouped into three different isoenzyme types (Zymodemes). ME mobility was identical in all the four strains. Some relative difference was seen in the mobility of GPI, though the pattern of mobility was similar in all the strains.

Adolescent↗
PubMed1985

Experimental examination of the direct damaging effects of Giardia lamblia on intestinal mucosal scrapings of mice.

Giardia lamblia is known to produce functional and structural derangement of the small intestine but the pathogenesis of this defect is not clear. To examine this, mucosal scrapings from the small intestine of mice were incubated with human G. lamblia trophozoites. The integrity of the mucosal cells was assessed by their ability to exclude trypan blue, and by the levels of brush border lactase, sucrase and maltase. As judged by the trypan blue test, more mucosal cells incubated with G. lamblia were found to be damaged than were in the control groups I (mucosal cells alone) and III (mucosal cells plus Giardia culture media). Similar results were obtained with disaccharidases where again the mucosal cells incubated with G. lamblia showed a statistically significant reduction in the activity of lactase, sucrase and maltase compared to that in the control groups. These findings suggest that G. lamblia causes direct damage to the small intestinal epithelial cells and that this effect is not mediated through factors such as bacterial proliferation, bile salt deconjugation and immunological reactions.

Animals↗
PubMed1985

Serum complement components in patients with trachoma.

Serum C1q, C3, C4, and C5 components of complement levels were measured in 56 healthy subjects and 98 patients with trachoma. Serum C1q and C3 levels were found to be significantly low in stages II and III. There was no change in serum C4 and C5 levels in any of the stages. The levels of C1q and C3 complement components in serum in stages II and III returned to normal as the disease resolved following the medical treatment.

Adult↗
PubMed1984

Influence of geographical factors in the distribution of pathogenic zymodemes of Entamoeba histolytica: identification of zymodeme XIV in India.

Stocks of Entamoeba histolytica isolated and maintained in a variety of culture media, both axenic and polyxenic, were compared with each other and with strains previously characterized. The present stocks were isolated from subjects living in various cities in India. Using the enzyme patterns of: E C 5319 glucose phosphate isomerase (GPI); E C 11140 L-malate: NADP+ oxidoreductase (oxaloacetate decarboxylating) (ME): E C 2751 phosphoglucomutase (PGM); and E C 2711 hexakinase (HK), developed after electrophoresis, three zymodemes were identified in 54 individual isolations of E. histolytica. Most importantly only one zymodeme associated with pathogenicity occurred, identified 28 times, among the collection, one of which was from a liver abscess.

Adult↗
PubMed1984

Immunodiagnosis of amoebiasis.

Serological studies were done on 127 cases using three different techniques namely indirect haemagglutination (IHA), indirect fluorescent antibody test (IFT) and counter immunoelectrophoresis (CIEP) to detect antiamoebic antibodies. All amoebic liver abscess cases showed significant titre of antibodies by all the three tests used. In the group of patients suffering from amoebic pathology of liver, 90.47 per cent were positive by IHA, 100 per cent by IFT and 85.71 per cent by CIEP respectively. Among amoebic dysentry and amoebic colitis cases 81.81 per cent and 80.64 per cent respectively were positive by IHA. The corresponding figures for IFT were 100 per cent and 74.19 per cent and for CIEP 90.90 per cent and 64.51 per cent respectively. Follow up study showed no significant fall in antibody titre in nine cases studied upto 10 weeks after treatment. Amoebic antigen could be detected in pus from all the nine cases with amoebic liver abscess by CIEP test.

Adult↗
PubMed1984

Cellulose acetate precipitation test in sero-diagnosis of amoebiasis.

Cellulose acetate precipitation (CAP) test for the detection of antibody against Entamoeba histolytica using the axenic antigen, was performed on the 127 serum samples obtained from patients with amoebic liver abscess (14), amoebic hepatitis (21), amoebic dysentry (11), amoebic colitis (31), other parasitic infestations (25) and normal individuals (25). The percent positivity was 100, 95.23, 90.9, 67.74 and 16 and 12 respectively whereas the corresponding figures for the indirect immunoflourescence (IFAT) test were 100, 100, 100, 74.19, 12 and 8 respectively. Although CAP is not as good a test as IFAT, yet it can be recommended for routine testing due to its sensitivity, speed of performance and applicability to a single serum sample.

Amebiasis↗