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Biomedical subjects

R K Marya

Publications and source records attributed to R K Marya.

60 records · Page 4Linked to original sources
PubMedDate not supplied

Prevalence of hypocalcaemia and hypophosphataemia in the elderly males in Haryana.

Concentrations of serum calcium and inorganic phosphate and serum alkaline phosphatase activity have been determined in 75 males over the age of 60 years and 40 young adult controls. Serum calcium and inorganic phosphate levels were significantly lower in the elderly group. Serum calcium-inorganic phosphate product was below 30 in 36% of the aged individuals. Serum alkaline phosphatase activity was elevated in one subject only. These results indicate the existence of mild vitamin D deficiency in the elderly males in this region.

Age Factors↗
PubMedDate not supplied

Seasonal variations in urinary calcium and sodium excretion.

Serum levels and urinary excretion of calcium, sodium and creatinine have been studied in 25 male subjects in summer and winter seasons. In contrast to the reports from the West, urinary calcium excretion was significantly less in summer than in winter. Urinary sodium excretion too was decreased in summer. The mechanisms possibly responsible for the observed seasonal variations have been discussed.

Adult↗
PubMedDate not supplied

Mechanism of hypercalciuria in experimental metabolic acidosis.

To study the mechanism of hypercalciuria in metabolic acidosis, ammonium chloride loading (long) test was performed in 68 stone formers and 50 controls. Administration of ammonium chloride in both stone formers and controls produced a significant increase in urinary volume, ammonium and calcium excretions, no change in plasma calcium and creatinine clearance and significant decrease in plasma bicarbonate. However, on the third day of ammonium chloride loading test, urinary ammonium excretion and plasma bicarbonate levels were significantly lower while urinary calcium excretion was significantly greater in stone formers than in controls. Thus calciuresis could be correlated with the degree of metabolic acidosis but not with the rate of urinary ammonium excretion.

Acidosis↗