Lance Richard McMahon

This study examines the respiratory effects of mitragynine and 7-hydroxymitragynine in rats, finding that 7-HMG causes respiratory depression reversed by naloxone, while MG increases breathing independently of opioid receptors.

This study shows cannabis smoke and oral Δ9THC improve working memory in aged rats but not young adults, without affecting hippocampus-dependent memory.

The paper examines how chronic nicotine exposure affects the ability of nAChR antagonists to counteract nicotine's effects in mice, finding reduced antagonism during treatment.