Answer to Question #136635 in Biology for Galata

Question #136635
5) What is drug tolerance? Which organelle is responsible for drug tolerance? Discuss the cytological explanation for the development of drug tolerance
1
Expert's answer
2020-10-05T06:42:13-0400

Drug tolerance is a reduced reaction to a drug. High concentrations of a substance which constantly binds the membrane-associated receptor is a main cause of the drug resistance. Drug desensitizes receptor decreasing its activation. As a result, the signalling pathways that are associated witj the receptor are not affected by the drug. Altered receptor density and modified receptor firing rate are other mechanisms leading to the drug tolerance. As a result, plasma membrane that regulates the functioning of receptors is an organelle responsible for the drug tolerance.


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