Search PubMed⌕ Search

Biomedical subjects

H Miki

Publications and source records attributed to H Miki.

At least 325 records · Page 18Linked to original sources

[Quarantine and health control of the squirrel monkey (Saimiri sciureus) (author's transl)].

A total of two hundreds and seventy squirrel monkeys (Saimiri sciureus) of both sexes were imported from South America through an animal dealer of the U. S. A. in eight lots from May, 1973 to July, 1974. They were investigated for the presence of the parasites for a maximum of fifteen months including nine weeks of quarantine period from the time of import. The mortality rate before or immediately after arrival at our laboratory reached 56.7% in the first two lots. This, however, could be reduced later to 4.8% by improving some conditions of transportation. Bacteriological surveys revealed no shigella or salmonella infections during the quarantine period. No tuberculin positive reactors were also detected. Filarial infestations seemed to be common in this species; about 45.5% had adult worms in the peritoneal cavity and about 65% harbored microfilaria in the peripheral blood. Acanthocephla was also found in a high rate in the lower alimentary tracts. It has been suggested that the worms disappear in fifteen months by keeping animals in the intermediate host-free circumstances. The sarcocyst was found in the femoral muscle of 7 (18.9%) of 37 animals examined histologically.

Acanthocephala↗

Lack of toxicity of chenodeoxycholic acid in the squirrel monkey.

The toxicity of chenodeoxycholic acid was studied in squirrel monkeys of both sexes. The drug was orally administered to five groups of 26 animals each at a daily dose of 0, 10, 20, 40, and 80 mg per kg, respectively, for a maximum of 52 weeks. No clinical symptoms that could suggest drug toxicity were observed. All laboratory studies, including liver function tests, were within normal limits. The proportion of lithocholic acid in biliary acids remained unchanged, whereas that of chenodeoxycholic acid was dose-dependently increased. No histopathological changes considered to be attributable to drug administration were observed.

Administration, Oral↗

Optic nerve glioma in an 18-month-old child.

An optic nerve glioma in an 18-month-old child was examined by both light and electron microscopy. The tumor revealed the characteristic features of uniform benign and fibrillary astrocytoma. Rosenthal fibers and calcium depostis were found within numerous intracellular glial processes. The above features indicated a slow-growing tumor of long duration, confirming the generally supported assumption of the congenital nature of optic nerve glioma. One unsuspected feature was the presence of fenestrated blood vessels.

Calcinosis↗

Specializations of the retinochoroidal juncture.

The occurrence of attachment sites between the basal plasma membrane of the retinal pigment epithelium and its basement lamina have been observed in a variety of animal species, including man. Similar structures connect adjacent basal infoldings of the retinal pigment epithelium. The topographic distribution of such attachment sites and basal infoldings in rat eyes show small differences between the peripapillary, posterior, and peripheral retina. Such attachment sites may help to provide a firm connection between the retinal pigment epithelium and choroid.

Animals↗

Osteogenic sarcoma. A study of one hundred and thirty cases.

One hundred and thirty patients with osteogenic sarcoma were studied clinically, roentgenographically, and pathologically. Prognosis by each of ten factors was analyzed with the Wilcoxon test. The test yielded p smaller than 0.05 in a comparison between the survival curves of patients fifteen years old or younger and that of patients over fifteen, but other comparisons did not yield p smaller than 0.05. The actual five-year survival rate was 25.5 per cent (twenty-six of 102 patients who had radical surgery). Our therapeutic regimen for osteogenic sarcoma at the present time consists of regional perfusion, amputation, bronchial artery infusion, and systemic administration of anticancer agents.

Adolescent↗