期刊
EXPERT OPINION ON DRUG METABOLISM & TOXICOLOGY
卷 8, 期 12, 页码 1505-1519出版社
TAYLOR & FRANCIS LTD
DOI: 10.1517/17425255.2012.722757
关键词
bariatric surgery; bioavailability; cardiometabolic syndrome; drug disposition; obesity; pharmacokinetics; roux-en-Y gastric bypass
资金
- Egyptian Government Scholarship
- Libyan Government Scholarship
Introduction: Being overweight is widespread in most societies and represents a major health threat. Gastric bypass surgery offers a highly effective mode of treatment for the morbidly obese patients. The procedures cause an alteration in normal gastrointestinal anatomy and physiology, with consequences not only on nutrient absorption, but also possibly on orally administered drugs. Bypass of the acidic environment of the stomach, partial impairment of bile salts-drug interactions and reduced absorptive surface, all create the potential for reduced absorption of drugs. Areas covered: This article provides an overview of the effects of obesity and the most prevalent type of gastric bypass (Roux-en-Y) on pharmacokinetics. Articles for review were searched using Pubmed. Expert opinion: The absorption of those drugs with known bioavailability issues generally seem to be most affected by bypass surgery. It is important to consider the effect of obesity on pharmacokinetics independent of the bypass procedure, because it leads to a dramatic drop in body mass over a relatively short period of time. This may be associated with reversals in the influence of obesity on drug disposition to characteristics more in line with leaner patients. Drugs will differ in their pharmacokinetic response to surgery, limiting any general conclusions regarding the impact of the surgery on drug disposition.
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