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Biomedical subjects

K Asayama

Publications and source records attributed to K Asayama.

At least 145 records · Page 8Linked to original sources
PubMed1979

Treatment of Mooren's ulcer by conjunctival excision.

3 early Mooren's ulcers were successfully treated by only one-time conjunctival excision adjacent to the ulcer, while in 2 other chronic vascularized Mooren's ulcers, repeated conjunctival excision was required for a final remission. The clinical outcome of these 5 eyes was better than that of 7 other eyes treated by conjunctival flap procedure, lamellar keratoplasty, topical eye drops or systemic medications. Four fragments of excised conjunctival tissue were examined histopathologically; the substantia propria was found to be infiltrated with plasma cells.

Adult↗
PubMed1978

Tissue culture of the retinal pigment epithelial cells.

Pure culture of the retinal pigment epithelial (RPE) cells of the chick embryo was carried out and the morphological characteristics of each developmental stage were observed under light microscope and transmission and scanning electron microscopes. Immature cells had a few, short processes on the apical surface and a few melanin granules in the cytoplasm. However, mature cells had two types of processes on the apical surface, one being narrow and the other wide. Many melanin granules were diffusely dispersed in the cytoplasm and the cells were joined by a junctional complex near the apical portion. Beneath the cultured cells, basement membrane and collagen fibrils were evident and were apparently produced by the culture RPE cells. The structure of the cultured cells in the well-differentiated stage appeared to be the same as that of living cells.

Animals↗