Secondary immunization inhibits drug induced apoptosis<Emphasis Type="Italic">in vivo</Emphasis> |
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| Authors: | Winston Costa Pereira Muddanna S Rao D M Vasudevan |
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| Institution: | (1) Department of Biochemistry, Kasturba Medical College, Manipal;(2) Department of Anatomy, Kasturba Medical College, Manipal;(3) Amrita Institute of Medical Science, Elamakkara P.O, Pincode-682026 Cochin, Kerala, India |
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| Abstract: | Immunization with a proper dose of an antigenic stimulus leads to cell proliferation and antibody response of circulating
lymphocytes. We have previously observed that Secondary immunized spleenocytes resist ceramide-mediated apoptosisin vitro. Our present study is aimed at investigating thein vivo effect of immunization on apoptosis. Mice were subjected to either Primary or Secondary dose with Tetanus Toxoid. Unimmunized
spleenocytes served as controls. Unimmunized, Primary and Secondary immunized mice were later exposed to chemotherapeutic
drugs such as Etoposide/Methotrexate/Vincristine to induce apoptosis. Apoptosis was studied by using the Feulgen reaction
on 5μ thin parafin sections of spleen. It was observed that Secondary immunized mice showed a lower percentage of apoptosis
as compared to Primary or Unimmunized mice that was subjected to either of the chemotherapeutic drugs. It was thus concluded
that Secondary immunization inhibits the process of chemotherapeutic drug induced apoptosis in vivo. |
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| Keywords: | Apoptosis cellular proliferation T lymphocytes |
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