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Biomedical subjects

S K Ibrahim

Publications and source records attributed to S K Ibrahim.

6 recordsLinked to original sources
PubMed2000

Polyferredoxin-based electrode materials.

Electrochemical oxidation of the hydrosulfide cluster [Fe4S4(SH)4]2- on gold, platinum or vitreous carbon in a methyl cyanide electrolyte leads to the growth of a conducting film. Spectroscopic and other evidence suggests that the film has cubane centres, predominately in the [4Fe4S]3+ oxidation state, which are linked by disulfide ligands to give an anionic array of [Fe4S4(S approximately)4]n- units. X-ray data suggests some long-range order in the electrode material. The polyferredoxin binds redox active cations consistent with an anionic array.

Crystallization↗
PubMed1991

Peptic ulceration in a lingual sinus.

Heterotopic gastric mucosa is reported in a sinus present since birth in the midline of the anterior two thirds of the tongue. Current theories concerning the presence of heterotopic mucosa in the oral cavity are presented and discussed.

Child, Preschool↗
PubMed1990

Condensing osteitis of the clavicle: does it exist?

Condensing osteitis of the clavicle was first described as a disease entity in 1974. There is painful localised swelling of the clavicle of undetermined origin, with increased radio-density, but an infective aetiology has not been excluded by previous authors. We report three children with the clinical and radiological findings of 'condensing osteitis'. Two of them had raised levels of antistaphylolysin titres and all responded to antibiotic therapy. We conclude that condensing osteitis is due to low-grade staphylococcal osteomyelitis; biopsy and treatment by antibiotics is recommended.

Anti-Bacterial Agents↗
PubMed1983

Potential value of antisera to epithelial membrane antigen in detecting early invasion in transitional cell carcinoma.

The distribution of epithelial membrane antigen in human transitional epithelium using immunocytochemical techniques was investigated. In normal urothelium the antigen is restricted to the luminal surface and superficial cell cytoplasm. During neoplastic progression cytoplasmic staining of intermediate and basal cells is seen. In certain circumstances staining is seen at the interface between the stroma and tumour. The latter appearance correlates with the presence of invasion as assessed by conventional histology and may help to identify early invasion in difficult cases.

Antigens↗
PubMed1982

Prognostic factors in non-infiltrating carcinoma of the bladder: a preliminary report.

We have reviewed 111 patients with papillary transitional cell carcinoma of the bladder, category Ta and T1, admitted between 1975 and 1980. Histological grade and the presence of multiple tumours at presentation were the most useful prognostic features in terms of recurrence and mortality from either locally invasive or metastatic disease.

Adult↗