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- W4225252553 abstract "Opioids are potent analgesic drugs with widespread cortical, subcortical, and spinal targets. In particular, the central pain system comprising ascending and descending pain pathways has high opioid receptor densities and is thus crucial for opioid analgesia. Here, we investigated the effects of the opioid remifentanil in a large sample (n = 78) of healthy male participants using combined corticospinal functional MRI. This approach offers the possibility to measure BOLD responses simultaneously in the brain and spinal cord, allowing us to investigate the role of corticospinal coupling in opioid analgesia. Our data show that opioids altered activity in regions involved in pain processing such as somatosensory regions, including the spinal cord and pain modulation such as prefrontal regions. Moreover, coupling strength along the descending pain system, that is, between the anterior cingulate cortex, periaqueductal gray, and spinal cord, was stronger in participants who reported stronger analgesia during opioid treatment while participants that received saline showed reduced coupling when experiencing less pain. These results indicate that coupling along the descending pain pathway is a potential mechanism of opioid analgesia and can differentiate between opioid analgesia and unspecific reductions in pain such as habituation." @default.
- W4225252553 created "2022-05-04" @default.
- W4225252553 creator A5029610267 @default.
- W4225252553 creator A5033792391 @default.
- W4225252553 creator A5060243087 @default.
- W4225252553 date "2022-04-26" @default.
- W4225252553 modified "2023-09-30" @default.
- W4225252553 title "Opioid analgesia alters corticospinal coupling along the descending pain system in healthy participants" @default.
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- W4225252553 doi "https://doi.org/10.7554/elife.74293" @default.
- W4225252553 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/35471139" @default.
- W4225252553 hasPublicationYear "2022" @default.
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