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Biomedical subjects

K Toyama

Publications and source records attributed to K Toyama.

At least 577 records · Page 32Linked to original sources
PubMed1976

[Liver dye metabolism and constitutional indocyanine green retention syndrome in Japan (author's transl)].

Some recent studies from Japan on liver dye metabolism are presented. Special attention has been given to 17 cases of constitutional indocyamine green retention syndrome. This syndrome consists of marked ICG-retention and normal BSP excretion. Other liver function tests such as enzymes or serum fractions are normal. In liver biopsy specimens there are no significant abnormal findings. The cause of the syndrome is still unknown but disturbance of passage through the membrane is considered. So far, this syndrome has only been noted in Japan.

Adolescent↗
PubMed1975

The mode of synaptic linkage in the cerebro-ponto-cerebellar pathway of the cat. II. Responses of single cells in the pontine nuclei.

Extracellular and intracellular recordings were made from single cells in the pontine nuclei (PN) of the cat. PN cells were identified by antidromic invasion from the cerebellum by stimulating either the brachium pontis (BP) or the white matter near the cerebellar nuclei. The cerebrally-induced impulses excited PN cells postsynaptically with a monosynaptic latency. Both fast and slow conducting cortical fibres contributed to the corticopontine excitation, so that the latency varied over a wide range. Measurements of the latencies for antidromic and corticopontine excitation and of the distances between stimulated sites permitted the calcuation of conduction velocities of PN cell axons and of their cortical input fibres. PN cells with fast conducting axons received convergence from both fast and slow cortical fibres, whereas PN cells with slow axons were innervated only by slow cortical fibres. The majority of PN cells were also excited by stimulating the medullary pyramid through collaterals of the pyramidal tract. Evidence of abundant pyramidal collaterals was provided by the collision technique. The functional role of the PN is discussed in connection with the cerebro-cerebellar loop circuits.

Animals↗