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The effect of ampicillin on the response of human lymphocytes to PHA
Abstract:
The effect of ampicillin on the sensitivity of human lymphocytes to PHA was examined by measuring the following parameters: temperature-stable E rosette formation: leukocyte migration inhibition: DNA synthesis. It was found, that ampicillin present in the culture medium at a concentration of 50 microgram/ml does not change E rosette formation, intensifies the inhibition of leukocyte migration and modulates the proliferative response to PHA. The magnitude and direction of this last effect depended upon the preparation of PHA used and on its dose. Ampicillin enhanced DNA synthesis in cultures stimulated by submitogenic, as well as supraoptimal doses of PHA-Wellcome and suppressed the DNA synthesis in cultures containing optimal mitogenic doses of PHA-Difco.
Insights
Ampicillin (50 µg/ml) did not alter E rosette formation in human lymphocytes but intensified leukocyte migration inhibition. Its effect on DNA synthesis varied, enhancing it with some phytohemagglutinin (PHA) preparations and suppressing it with others.
Area of Science:
- Immunology
- Pharmacology
Background:
- The immune system's response can be modulated by antibiotics.
- Understanding ampicillin's immunomodulatory effects is crucial.
Purpose of the Study:
- To investigate the impact of ampicillin on human lymphocyte sensitivity to phytohemagglutinin (PHA).
- To assess ampicillin's influence on E rosette formation, leukocyte migration inhibition, and DNA synthesis.
Main Methods:
- Human lymphocytes were cultured with ampicillin at 50 µg/ml.
- Assessed temperature-stable E rosette formation.
- Measured leukocyte migration inhibition.
- Quantified DNA synthesis in response to PHA stimulation.
Main Results:
- Ampicillin did not affect E rosette formation.
- Ampicillin intensified leukocyte migration inhibition.
- Ampicillin modulated DNA synthesis, enhancing it with submitogenic/supraoptimal PHA-Wellcome doses and suppressing it with optimal PHA-Difco doses.
Conclusions:
- Ampicillin exhibits immunomodulatory effects on human lymphocytes.
- The drug's impact on lymphocyte proliferation is dose- and preparation-dependent.
- Ampicillin's influence on immune cell function warrants further investigation.