TY - GEN AB - The rostral ventromedial medulla (RVM) regulates pain through ON- and OFF-cell populations, which facilitate or inhibit nociception. This thesis contrasts their roles in acute versus chronic pain and explores interactions with core functions such as respiration. In acute injury, ON-cell activity drives hyperalgesia, but in chronic inflammation, ON-cell inhibition exacerbates pain, indicating distinct mechanisms. Respiratory monitoring revealed that ON-cells modulate both pain and respiration, while OFF-cells primarily mediate analgesia. Opioid effects in the RVM confirmed separable pathways for analgesia and respiratory depression. These findings advance understanding of RVM physiology and suggest strategies for developing non-respiratory-depressant analgesics. AD - Oregon Health and Science University AU - Cleary, Donald DA - 2012 DO - 10.6083/M48G8HPB DO - DOI ED - Heinricher, Mary ED - Mentor ID - 792 KW - Analgesics, Opioid KW - Morphine KW - Medulla Oblongata KW - Respiration KW - Respiratory Insufficiency KW - Chronic Pain L1 - https://digitalcollections.ohsu.edu/record/792/files/795_etd.pdf L2 - https://digitalcollections.ohsu.edu/record/792/files/795_etd.pdf L4 - https://digitalcollections.ohsu.edu/record/792/files/795_etd.pdf LK - https://digitalcollections.ohsu.edu/record/792/files/795_etd.pdf N2 - The rostral ventromedial medulla (RVM) regulates pain through ON- and OFF-cell populations, which facilitate or inhibit nociception. This thesis contrasts their roles in acute versus chronic pain and explores interactions with core functions such as respiration. In acute injury, ON-cell activity drives hyperalgesia, but in chronic inflammation, ON-cell inhibition exacerbates pain, indicating distinct mechanisms. Respiratory monitoring revealed that ON-cells modulate both pain and respiration, while OFF-cells primarily mediate analgesia. Opioid effects in the RVM confirmed separable pathways for analgesia and respiratory depression. These findings advance understanding of RVM physiology and suggest strategies for developing non-respiratory-depressant analgesics. PY - 2012 T1 - Opioid-sensitive brainstem neurons separately modulate pain and respiration TI - Opioid-sensitive brainstem neurons separately modulate pain and respiration UR - https://digitalcollections.ohsu.edu/record/792/files/795_etd.pdf Y1 - 2012 ER -