Researchers at The University of New Mexico (UNM) showed that legal Cannabis hemp oil reduced mechanical pain sensitivity 10-fold for several hours in mice with chronic post-operative neuropathic pain. Full story.
Researchers have zeroed in on the ventral pallidum, an information-processing hub in the brains of mice to discover how neurons there influence the animals’ motivation to either seek pleasurable experiences or avoid negative ones.
A new study in mice uncovered a previously unknown role that the central amygdala can play in upgrading or downgrading pain signals in the brain’s circuitry. The study, published in Cell Reports, was conducted by researchers at the Division of Intramural Research at the National Center for Complementary and Integrative Health (NCCIH), part of the National Institutes of Health.
Early life stress (ELS) can significantly influence biological pathways associated with nociception, increasing vulnerability to future heightened pain sensitivity and subsequent risk of pain events. However, very little human research has investigated the association of ELS, measured across multiple domains, with future pain sensitivity. Data from Gen1 and Gen2 of the Raine Study were used to assess the association between a wide range of early life stressors, including in antenatally, and pressure and cold pain sensitivity at young adulthood.
Abstract: Enormous progress in understanding the mechanisms that mediate pain can be augmented by an evolutionary medicine perspective on how the capacity for pain gives selective advantages, the trade-offs that shaped the mechanisms, and evolutionary explanations for the system’s vulnerability to excessive and chronic pain. Syndromes of deficient pain document tragically the utility of pain to motivate escape from and avoidance of situations causing tissue damage.