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Biomedical subjects

M Yasuda

Publications and source records attributed to M Yasuda.

At least 559 records · Page 31Linked to original sources
PubMed1978

Light and electron microscopic studies of intramitochondrial bodies in bovine adrenocortical cells by proteolytic digestion.

The nature of the intramitochondrial bodies in bovine adrenocortical cells was investigated both light and electron microscopically, by applying enzymatic digestion on paraffin and epon sections. The result that these bodies were extracted completely either by pepsin or by trypsin strengthened the validity of the previous conclusion that their nature is proteinaceous.

Adrenal Cortex↗
PubMed1978

Unusual mitochondrial ultrastructure in the pig adrenal cortex.

Unusually large mitochondria with few cristae were observed in the cells of the boundary layer between the zonae fasciculata and reticularis of the pig adrenal. These mitochondria occasionally contained parallel arrays of beaded filaments which appeared to be composed of repetitive electron opaque particles, measuring 10 to 11 nm in diameter. The possibility that these filaments are arranged in closely packed arrays of tubular structures with a central filament is discussed.

Adrenal Cortex↗
PubMed1977

Intramitochondrial bodies in bovine adrenocortical cells.

Electron dense, homogeneous, mostly round intramitochondrial bodies were found in bovine adrenal glands, predominantly in the zona glomerulosa. The histochemical results obtained suggest that these bodies might contain a considerable amount of protein, although the possibility that substances other than proteins are contained in these bodies cannot be completely ruled out. The physiological significance of the intramitochondrial bodies remains unclear.

Adrenal Cortex↗
PubMed1977

Electron microscopic study on the innervation of the pancreas of the domestic fowl.

The innervation of the pancreas of the domestic fowl was studied electron microscopically. The extrapancreatic nerve is composed mostly of unmyelinated nerve fibers with a smaller component of myelinated nerve fibers. The latter are not found in the parenchyma. The pancreas contains ganglion cells in the interlobular connective tissue. The unmyelinated nerve fibers branch off along blood vessels. Their synaptic terminals contact with the exocrine and endocrine tissues. The synaptic terminals can be divided into four types based on a combination of three kinds of synaptic vesicles. Type I synaptic terminals contain only small clear vesicles about 600 A in diameter. Type II terminals are cgaracteruzed by small clear and large dense core vesicles 1,000 A in diameter. Type III terminals contain small vesicles and small dense core vesicles 500 A in diameter. Type IV terminals are characterized by small and large dense core vesicles. The exocrine tissue receives a richer nervous supply than the endocrine tissue. Type II and IV terminals are distributed in the acinus, and they contact A and D cells of the islets. B cells and pancreatic ducts are supplied mainly by Type II terminals, the blood vessels by Type IV terminals.

Animals↗