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Biomedical subjects

Y Oda

Publications and source records attributed to Y Oda.

At least 721 records · Page 40Linked to original sources
PubMed1977

Blood levels of 25-hydroxyvitamin D in nephrotic syndrome. Studies in 26 patients.

The blood levels of 25-hydroxyvitamin D (25-HCC) in 26 patients with nephrotic syndrome (proteinuria of 6.5 g/24 h +/- 0.8 SEM) ranged between 1 and 18.6 ng/ml (8.6 +/- 1.0 SEM). This value was significantly lower (P less than 0.01) than that in normal subjects (21.8 +/- 2.3 ng/ml) and patients with chronic renal failure (24.8 +/- 2.3 ng/ml). There was inverse correlation (P less than 0.01) between levels of 25-HCC and magnitude of proteinuria and a direct relation (P less than 0.01) with serum albumin. Reduction in proteinuria was rapidly followed by a rise in blood 25-HCC toward normal. Ionized calcium levels were low in 16 of 26 nephrotic patients irrespective of degree of renal failure. In four of seven nephrotic patients with normal renal function, ionized calcium levels were low and showed an inverse relation with levels of parathyroid hormone. These data show that patients with nephrotic syndrome have low blood levels of 25-HCC probably due to its loss in urine. This derangement is probably responsible for the disorders of calcium metabolism in nephrosis.

Adult↗
PubMed1976

Further studies on the blue and near ultraviolet reversible photoreaction with an intracellular particulate fraction of the fungus, Alternaria tomato.

Further studies have been made on the blue and near ultraviolet-reversible photoreaction in a cell-free system of the fungus Alternaria tomato, prepared by two-layer sucrose density gradient centrifugation. A light-minus-dark difference spectrum of the supernatant fraction showed a dip in the near ultraviolet region, mainly at 280 nm, when irradiated with near ultraviolet light which could not be reversed by following the initial irradiation with blue light. The difference spectrum of the dialyzed particulate fraction, located in the 68% sucrose band, showed a peak absorbance in the blue region, mainly at 400 nm, when irradiated with near ultraviolet light, and also could not be reversed by blue light. When the particulate fraction plus the supernatant fraction was irradiated with near ultraviolet light, the increment rate of peak absorbance in the blue region increased compared to that of the particulate fraction lacking the supernatant, and both peak absorbance in the blue region and the dip in the near ultraviolet region were reversed by irradiation with blue light following the application of near ultraviolet light. Thus, it was concluded that two photoresponsive systems are involved in blue and near ultraviolet reversible photoreaction on an intracellular particulate fraction.

Alternaria↗