alexa Antipyretics: mechanisms of action and clinical use in fever suppression.
Pharmaceutical Sciences

Pharmaceutical Sciences

Journal of Pharmacognosy & Natural Products

Author(s): Aronoff DM, Neilson EG

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Abstract Fever is a complex physiologic response triggered by infectious or aseptic stimuli. Elevations in body temperature occur when concentrations of prostaglandin E(2) (PGE(2)) increase within certain areas of the brain. These elevations alter the firing rate of neurons that control thermoregulation in the hypothalamus. Although fever benefits the nonspecific immune response to invading microorganisms, it is also viewed as a source of discomfort and is commonly suppressed with antipyretic medication. Antipyretics such as aspirin have been widely used since the late 19th century, but the mechanisms by which they relieve fever have only been characterized in the last few decades. It is now clear that most antipyretics work by inhibiting the enzyme cyclooxygenase and reducing the levels of PGE(2) within the hypothalamus. Recently, other mechanisms of action for antipyretic drugs have been suggested, including their ability to reduce proinflammatory mediators, enhance anti-inflammatory signals at sites of injury, or boost antipyretic messages within the brain. Although the complex biologic actions of antipyretic agents are better understood, the indications for their clinical use are less clear. They may not be indicated for all febrile conditions because some paradoxically contribute to patient discomfort, interfere with accurately assessing patients receiving antimicrobials, or predispose patients to adverse effects from other medications. The development of more selective fever-relieving agents and their prudent use with attention to possible untoward consequences are important to the future quality of clinical medicine.
This article was published in Am J Med and referenced in Journal of Pharmacognosy & Natural Products

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