Related Experiment Video
Updated: Jun 29, 2026

A Conditioned Place Preference Protocol for Measuring Incubation of Craving in Rats
Published on: November 6, 2018
Endogenous opiates and behavior: 2007
1Department of Psychology and Neuropsychology Doctoral Sub-Program, Queens College, City University of New York, 65-30 Kissena Blvd.,Flushing, NY 11367, United States. richard.bodnar@qc.cuny.edu
Abstract:
This paper is the thirtieth consecutive installment of the annual review of research concerning the endogenous opioid system. It summarizes papers published during 2007 that studied the behavioral effects of molecular, pharmacological and genetic manipulation of opioid peptides, opioid receptors, opioid agonists and opioid antagonists. The particular topics that continue to be covered include the molecular-biochemical effects and neurochemical localization studies of endogenous opioids and their receptors related to behavior, and the roles of these opioid peptides and receptors in pain and analgesia; stress and social status; tolerance and dependence; learning and memory; eating and drinking; alcohol and drugs of abuse; sexual activity and hormones, pregnancy, development and endocrinology; mental illness and mood; seizures and neurologic disorders; electrical-related activity and neurophysiology; general activity and locomotion; gastrointestinal, renal and hepatic functions; cardiovascular responses; respiration and thermoregulation; and immunological responses.
Insights
This review covers 2007 research on the endogenous opioid system, detailing how manipulating opioid peptides and receptors impacts behavior. It explores roles in pain, stress, addiction, and more.
Area of Science:
- Neuroscience
- Pharmacology
- Behavioral Science
Background:
- The endogenous opioid system modulates numerous physiological and behavioral processes.
- Annual reviews are crucial for synthesizing research on this complex system.
Purpose of the Study:
- To summarize research published in 2007 on the behavioral effects of endogenous opioid system manipulation.
- To provide an overview of studies investigating opioid peptides, receptors, agonists, and antagonists.
Main Methods:
- Review of scientific literature published in 2007.
- Analysis of studies involving molecular, pharmacological, and genetic manipulation of opioid system components.
- Synthesis of findings related to behavioral outcomes.
Main Results:
- Behavioral effects were examined across diverse areas including pain, stress, learning, addiction, and mood.
- Research explored the neurochemical localization and molecular-biochemical effects of endogenous opioids and their receptors.
- Studies investigated the roles of the opioid system in functions such as feeding, reproduction, and neurological disorders.
Conclusions:
- The endogenous opioid system significantly influences a wide spectrum of behaviors and physiological functions.
- Continued research is vital for understanding the intricate roles of opioid peptides and receptors.
- This review highlights the broad impact of opioid system research on various scientific disciplines.
Related Concept Videos
Opioid Receptors: Overview
Analgesia and Pain Management
Drug Abuse and Addiction: Pharmacological Phenomena
Opioid Analgesics: Synthetic and Semisynthetic Opioids
Opioid Analgesics: Morphine and Other Natural Cogeners
Drug Dependence

