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Biomedical subjects

M Madhavan

Publications and source records attributed to M Madhavan.

79 records · Page 5Linked to original sources
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Anterior uveal and episcleral metastases from carcinoma of the breast.

Breast carcinoma is the most common primary tumor producing intraocular metastasis. Metastases to the iris and ciliary body are relatively rare. The authors report a case of a 61-year-old lady, operated for carcinoma of the left breast 3 years back, who presented with symptoms and signs of acute narrow-angle glaucoma in the right eye. A diffuse whitish plaque-like mass in the upper nasal quadrant of the iris with an episcleral nodule on the limbus in the corresponding area and all the signs of acute narrow-angle glaucoma were present in the right eye. Intraocular pressure was controlled medically. Fine-needle aspiration cytology from the episcleral nodule showed malignant cells. Histopathology of the excised nodule showed metastatic poorly differentiated carcinoma, and the cellular pattern was similar to the carcinoma of the breast. There was no other metastasis anywhere in the body. Fine-needle aspiration cytology from an external lesion of the eye is a less invasive and easier procedure than paracentesis to diagnose the metastatic nature of the lesions. The rare features in our case are the clinical presentation as acute glaucoma and the ocular structures being the first and only site of metastasis.

Biopsy, Needle↗
PubMedDate not supplied

Studies on serum and tissue lipid fractions in Bengal gram induced retardation of experimental atherosclerosis.

Serum and tissue lipid levels were studied in rabbits in whom egg yolk was used to induce atherosclerosis and Bengal gram was supplemented in the diet as a lipodiatic agent. Monthly serological and tissue studies were done to assess the levels of total cholesterol, triglycerides and phospholipids and it was found that egg yolk feeding leads to statistically significant increases in all these fractions in the serum, liver, adrenals, heart and aorta. Bengal gram supplementation of the diet led to flattening of the atherosclerotic plaques and showed statistically significant decline in the organs with the exception of the kidney. This study confirms the lipodiatic effect of the bengal gram and its beneficial effect on the atherosclerotic plaque.

Animals↗
PubMedDate not supplied

Serum lipid and lipoprotein fractions in bengal gram and biochanin A induced alterations in atherosclerosis.

Serum lipids and lipoproteins were studied in rabbits fed on egg yolk supplemented diet to induce hypercholesterolemia. Bengal gram and synthetically pure isoflavone Biochanin A have been used as lipodiatic agents in this study. Rabbits were divided into four groups: Group A were fed on egg yolk supplement alone to form the positive control group, Group B were fed with 40 gms of overnight soaked bengal gram (Cicer arietinum), Group C were fed with 50 mgs of Biochanin A fortnightly, Group D was negative control group fed on pelleted laboratory feed. Serum samples were taken every month and total cholesterol, triglycerides and HDL cholesterol were estimated. The other lipoproteins like LDL cholesterol and VLDL cholesterol were obtained by calculations. The Group B and C showed a significant decrease of their lipids and lipoprotein in comparison to Group A thereby indicating the lipodiatic effect of these two substances. However, HDL cholesterol showed an increase in these two groups thereby proving that an increased HDL cholesterol has a protective effect on the atherosclerotic process.

Animals↗
PubMedDate not supplied

Protein C levels in ischaemic heart disease.

Protein C is a circulating glycoprotein with anticoagulant properties. Functional and immunological levels of protein C were determined in 34 cases of ischaemic heart disease and 12 healthy age-matched controls. The sensitive colorimetric assay was used to determine the functional levels and ELISA for antigenic levels. Mean protein C activity and antigenic levels were found to be elevated in these patients as compared to controls. Protein C levels in the three individual subgroups-acute myocardial infarction, previous myocardial infarction and chronic stable angina pectoris-were also raised as compared to controls. The elevation was significant in the case of the acute myocardial infarction group. These results further support the hypothesis that the body synthesises increased amounts of protein C in ischaemic heart disease to compensate for the hypercoagulable state that exists in this disorder, thus playing a protective role.

Aged↗