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Biomedical subjects

A K Kabir

Publications and source records attributed to A K Kabir.

4 recordsLinked to original sources

Thoracic actinomycosis.

Thoracic actinomycosis represents about one-fourth of all cases of the disease. Isolated pleural effusion due to Actinomycosis is rare. We report a case of right sided pleural effusion with discharging sinus in the right anterior chest wall. Actinomycosis was suspected and confirmed by microscopic identification of "sulfur granules" in the discharge of the sinus tract and also identification of gram-positive filamentous bacteria in the specimen of discharging sinus. The patient improved clinically and radiologically after treatment with intravenous penicillin G followed by oral penicillin and aspiration of pleural fluid.

Actinomycosis↗

Production, characterization and immunodiagnostic application of a monoclonal antibody to Shiga toxin.

A mouse monoclonal antibody (MAb ICT7) that is specific for Shiga toxin was produced. The MAb neutralises the cytotoxic effects of both purified Shiga toxin and culture extracts of Shigella dysenteriae type 1 in HeLa cells. Using MAb ICT7 and polyclonal rabbit antiserum, a sandwich ELISA was developed. This test detects Shiga toxin in both S. dysenteriae type 1 bacterial extracts and in stools of patients with S. dysenteriae type 1 infection. The ELISA also detects toxin in enterohaemorrhagic Escherichia coli (EHEC) strains positive for Shiga-like toxin I. The test could detect a minimum of 100 pg of purified Shiga toxin. Furthermore, the ELISA did not detect toxin in non-S. dysenteriae type 1 Shigella species or Shiga-like toxin II produced by EHEC strains.

Animals↗

The synthesis of some fluoro derivatives of sucrose.

2,3,1',3'4',6'-Hexa-O-benzylsucrose was obtained by mild acid-catalysed hydrolysis of the 4,6-O-isopropylidene derivative and then converted into its 4,6-di-O-mesyl derivative. Selective displacement of this disulphonate with fluoride anion (from tetrabutylammonium fluoride) then afforded the 6-fluoro-4-mesylate. Removal of the protecting groups yielded 6-deoxy-6-fluorosucrose, which was characterised as its crystalline hepta-acetate. A derivative of 6-deoxy-6-fluoro-galacto-sucrose was formed when the above 6-fluoro-4-mesylate was subjected to nucleophilic displacement with benzoate anion.

Chemical Phenomena↗

Oral therapy in children with cholera: a comparison of sucrose and glucose electrolyte solutions.

We performed a double-blind trial comparing sucrose electrolyte oral solution with glucose electrolyte oral solution in children less than 5 years of age with severe cholera-like diarrhea. Of 111 patients studied (102 with bacteriologically confirmed cholera), 55 received sucrose solution and 56 received glucose solution. The success rates, as defined by the absence of the need to give unscheduled intravenous therapy, were similar in the two groups (73% and 77% in the sucrose and glucose groups, respectively). There was no difference in purging rates between the two groups. The primary determinant of success for oral fluid regardless of the sugar was the purging rate. Sucrose malabsorption was responsible for oral therapy failure in one child. This study demonstrates that sucrose is an effective alternative to glucose in the oral therapy solution, but either must be used in conjunction with intravenous solution when treating severe dehydrating diarrhea.

Administration, Oral↗