Biomedical subjects
Publications and source records attributed to E M Miller.
One of the few well documented cases of cerebellar glioblastoma multiforme in an adult is reported. In addition, to our knowledge, it is the first reported case in which the angiographic, pneumoencephalographic, nuclear scan and CAT data have been correlated. In this case the CAT scan proved the most sensitive in the demonstration of tumor.
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Evidence is presented for the specific in vivo and in vitro inhibition of isovaleryl CoA dehydrogenation by hypoglycin A and its derivative, alpha-ketomethylenecyclopropylpropionic acid. alpha-Methylbutyryl CoA dehydrogenation was also impaired, but the degree of inhibition was much lower. Isobutyryl CoA dehydrogenation was not inhibited. 4-Pentenoic acid inhibited none of these reactions. It is concluded that isovaleryl CoA is dehydrogenated by a specific enzyme, isovaleryl CoA dehydrogenase, contrary to previous assumptions that it is dehydrogenated by green acyl CoA dehydrogenase. The present concept agrees with our previous findings in isovaleric acidemia, a genetic disorder in which a specific defect of isovaleryl CoA dehydrogenase was observed. It was also demonstrated that isovaleric acidemia can be induced in experimental animals by the administration of hypoglycin A. Furthermore, some symptoms of "the vomiting sickness of Jamaica" appear to be due to isovaleric acid accumulation secondary to the ingestion of hypoglycin A.
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White rings of the cornea occur as an occupational injury among limestone workers, especially those who tend kilns converting limestone to calcium oxide. Clinical proof is offered that the ring results from a calcium hydroxide burn involving a very small area of the cornea.
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