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Biomedical subjects

P Manowitz

Publications and source records attributed to P Manowitz.

43 records · Page 3Linked to original sources
PubMed1976

Methaqualone metabolism by rat liver microsomes.

A rat hepatic microsomal system has been established which metabolizes methaqualone. The microsomes are obtained from livers of rats treated with phenobarbital. The methaqualone is dissolved in polyethylene glycol-200 prior to addition to the incubation mixture. A comparison is made between the metabolites obtained in this in vitro system and metabolites obtained from urines of phenobarbital treated rats injected with methaqualone. The same two and sometimes three metabolites, as determined by thin layer and gas liquid chromatography, were found in both the complete microsomal incubation system and the urines.

Animals↗
PubMedDate not supplied

Relation between serum uric acid and blood pressure in adolescents.

In adults, serum uric acid is positively associated with blood pressure levels. It is also a predictor of the development of hypertension in normotensive adults. The purpose of this study was to examine the relation of serum uric acid to systolic and diastolic blood pressure in adolescents. The data, from Cycle III of the National Health Examination Survey, consisted of a national probability sample of 6768 youths, 12-17 years old, in the United States. With age, height, weight, and sexual maturity controlled, serum uric acid significantly predicted blood pressure in adolescents. This relationship of uric acid and blood pressure was evident in male, but not female, adolescents. In association with findings from adult studies, these results indicate that uric acid levels may be useful indicators of adolescents at risk for hypertension.

Adolescent↗
PubMedDate not supplied

Arylsulfatase A variants in patients with alcoholism.

Leukocytes from 200 mentally ill patients and 100 normal controls were analyzed for electrophoretic variants of arylsulfatase A. Four different variant forms were found in 15 subjects. There is a relatively high occurrence of the arylsulfatase A variants in patients with alcoholism. Twenty-one per cent (12/56) of patients with alcoholism have a variant enzyme. Only one of the 100 normal controls has a variant enzyme. (This single subject was considered normal by the criteria of the study, namely, a self-report of no current medical problem or psychiatric history. However, upon further testing, it was found that this subject has neurological and neuropsychological deficits). The hypothesis is presented that chronic alcohol intake and abnormal arylsulfatase A act in concert to elevate sulfatide levels which results in abnormalities of brain function. If this hypothesis is correct, persons in whom abnormal arylsulfatase A is expressed may be at risk to the neuropathological effects of alcohol.

Alcoholism↗
PubMedDate not supplied

A method for rapid detection of arylsulfatase A pseudodeficiency mutations.

Pseudodeficiency of arylsulfatase A is a complicating factor in the determination of metachromatic leukodystrophy risk and carrier status. A method using polymerase chain reaction and restriction enzyme digestion to detect the presence of both the mutations that contribute to arylsulfatase A pseudodeficiency is described using DNA from blood or buccal cells. Application of this technique should facilitate determination of metachromatic leukodystrophy status and counseling in families where the pseudodeficiency allele is present.

Base Sequence↗