期刊
PAIN
卷 158, 期 12, 页码 2290-2300出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/j.pain.0000000000001043
关键词
Opioids; Endogenous opioids; Pain; Dependence; Socialization
资金
- Pfizer
- Covidien
Before the discovery of the endogenous opioid system in the 1970s, opioids were understood only through the lens of opioid drug effects. Opium produced sleep, pain relief, and addiction. Once a variety of opioids had been extracted from opium, and still others synthesized chemically, it became clear that there must be endogenous receptors to explain differential drug effects. So, the search was on to identify the receptors, and subsequently their endogenous ligands. Even then, the consequential ways in which the endogenous opioid system influences the way we respond to the environment and survive took time to unravel. Today's understanding extends far beyond simply accepting pain relief and addiction as separate processes, to the realization that the endogenous opioid system achieves constant adjustments between punishment (pain) and reward in communicating areas of the brain previously thought to subserve separate functions. The system also plays a crucial role in socialization. Taken together, these 2 lines of research have led to new insights into why the endogenous opioid system is so important in terms of evolution, individual survival and day-to-day function, and how important it is to consider opioid medications within the context of these critical natural functions.
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