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Pancreatic islet-cell viability, functionality and oxidative status remain unaffected at pharmacological concentrations of commonly used antibioticsin vitro

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Abstract

Environmental factors such as diet, physical activity, drugs, pollution and life style play an important role in the progression and/or precipitation of diseases like diabetes, hypertension, obesity and cardiovascular disorders. Indiscriminate use of antibiotics to combat infectious diseases is one of the commonest forms of misuse of drugs. Antibiotics seem to have a correlation with diabetes and pancreatic function. There are controversial reports about the effect of antibiotics on the pancreatic islets; some suggesting their harmless action, some depicting a beneficial role and others indicating deleterious effect. Moreover, use of antibiotics is mandatory during islet isolation and cultivation to reduce incidences of microbial contamination. It is likely that antibiotic treatment may adversely affect islet viability and its functioning leading to failure of islet transplantation. The presentin vitro study was undertaken to examine the effect of commonly used antibiotics such as gentamycin, penicillin, streptomycin, tetracycline, neomycin, erythromycin and chloramphenicol on islet viability, its functioning and induction of oxidative stress if any. The viability and insulin production data showed that none of the antibiotics used in the present study affect the viability and the functioning of the islets at their pharmacological concentrations. Free radical levels measured in terms of melonyldialdehyde (MDA), nitric oxide (NO) and reduced glutathione (GSH) reveal that except for a marginal increase in lipid peroxidation with tetracycline and slight increase in NO levels with streptomycin, none of these antibiotics affect the oxidative status of the cells. Antioxidant enzymes such as superoxide dismutase and catalase remain unaffected after this treatment. Our results reveal the innocuous nature of the antibiotics used at pharmacological concentrations, suggesting their safety whenever prescribed to combat infections and also during islet isolation procedures.

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Abbreviations

DTNB:

5,5-dithiobis-2-nitrobenzoic acid

DTZ:

dithiozone

FCS:

foetal calf serum

GSH:

glutathione

KRBH:

Krebs-Ringer bicarbonate buffer (pH 7.4) with HEPES

MDA:

melonyldialdehyde

NO:

nitric oxide

SOD:

superoxide dismutase

STZ:

streptozotocin

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Authors and Affiliations

  1. National Centre for Cell Sciences, Ganeshkhind Road, 411 007, Pune, India

    Yogita Shewade, Suraj Tirth & R. R. Bhonde

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  1. Yogita Shewade
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  2. Suraj Tirth
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  3. R. R. Bhonde
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Correspondence to R. R. Bhonde.

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Shewade, Y., Tirth, S. & Bhonde, R.R. Pancreatic islet-cell viability, functionality and oxidative status remain unaffected at pharmacological concentrations of commonly used antibioticsin vitro . J Biosci 26, 349–355 (2001). https://doi.org/10.1007/BF02703744

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  • DOI: https://doi.org/10.1007/BF02703744

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