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Biomedical subjects

J Levy

Publications and source records attributed to J Levy.

At least 577 records · Page 32Linked to original sources
PubMed1973

In vitro susceptibility of Neisseria gonorrhoeae to spectinomycin examined by a broth dilution method.

The in vitro susceptibility of 113 strains of Neisseria gonorrhoeae to spectinomycin was determined by the broth dilution method and was compared with their susceptibility to penicillin and ampicillin. All strains demonstrated a susceptibility to spectinomycin in a range between 2.5 and 20 mug/ml; 96% of these strains were susceptible in a range from 5 to 10 mug/ml. The same strains were susceptible to ampicillin at concentrations between 0.06 and 0.5 mug/ml and to penicillin between 0.02 and 1.25 units/ml. For the majority of strains, the minimal inhibitory and bactercidal concentrations were identical; however, with more than 10% of the strains, the minimal inhibitory concentration was lower than the minimal bactericidal concentration.

Ampicillin↗
PubMed1972

A model for the genetics of handedness.

Experimental data and theoretical work on the inheritance of handedness and cerebral dominance are reviewed. A two-gene, four-allele model, one locus pertaining to left or right hemispheric dominance and the other to contralateral or ipsilateral hand control relative to the dominant hemisphere, is constructed. It is in excellent agreement with all quantitative information regarding this problem. Refinements designed to explain relevant qualitative facts are proposed and discussed.

Alleles↗
PubMed1972

The effect of azathioprine on gammaglobulin synthesis in man.

The effect of azathioprine therapy on gammaglobulin synthesis was evaluated in nine patients with rheumatic disorders. The rates of synthesis of IgG and IgM were calculated before and after 4 months of azathioprine treatment using turnover studies of radioiodinated gammaglobulins. The synthesis of IgG decreased 33.4% of the initial IgG synthetic rate. Seven of nine patients showed reductions of IgG synthesis ranging from 16.8 to 74.1%. IgM production decreased from 24.5 to 74.2% in eight of nine patients with a mean reduction of 40.9%. Studies before and after a control period of 4 months of placebo in six patients revealed a mean increase in IgG and IgM synthesis. Serum immunoglobulin concentrations after 4 months of azathioprine treatment were not consistently reduced and did not parallel changes in immunoglobulin synthesis. Reduced gammaglobulin synthesis may play a role in the therapeutic action of this and other "immunosuppressive" drugs.

Antibodies, Antinuclear↗