μ-opioid receptor

The μ-opioid receptor is a type of protein found on nerve cells in the brain and spinal cord that binds to specific chemicals called opioids, including natural ones like endorphins and drug-based ones like morphine. When activated, these receptors help reduce pain perception and can also produce feelings of euphoria. They play a key role in how the body naturally manages pain and mood. However, when stimulated excessively by opioids, they can lead to dependence and other side effects, which is why their regulation is important in pain management and addiction treatment.