Drug Metabolism

The metabolic breakdown of pharmaceuticals by living organisms, often mediated by specialised enzyme systems, is known as drug metabolism. More specifically, xenobiotic metabolism refers to the set of metabolic pathways that alter the chemical structure of xenobiotics, which are substances foreign to an individual's normal biochemistry, like any drug or poison. The term comes from the Greek words xenos, meaning "stranger," and biotic, meaning "related to living beings." These bio transformational routes, which are found in all significant groupings of species, are thought to have existed long ago. These processes frequently cleanse harmful substances (although in some cases the intermediates in xenobiotic metabolism can themselves cause toxic effects). The field of pharmacokinetics investigates how drugs are metabolised. An essential component of pharmacology and medicine is the metabolism of pharmacological medicines. For instance, a drug's pharmacologic action's duration and potency are determined by its rate of metabolism. Multidrug resistance in infectious illnesses and cancer treatment are also influenced by drug metabolism, and dangerous drug interactions are frequently caused by the activities of certain medications as substrates or inhibitors of enzymes involved in xenobiotic metabolism. The xenobiotic metabolism of microorganisms determines whether a contaminant will be broken down during bioremediation or stay in the environment, making these pathways crucial in environmental research. In agriculture, the xenobiotic metabolism enzymes, in particular the glutathione S-transferases, are crucial because they may result in pesticide and herbicide resistance.