Are sexes affected differently by ketamine? An exploratory study in ketamine users

Area of Science:

• Neuroscience
• Psychiatry
• Cognitive Psychology

Background:

• Ketamine (ketamine) is a dissociative anesthetic with emerging recreational use.
• Chronic ketamine use has been associated with cognitive deficits.
• Sex differences in substance use and neurotoxicity are increasingly recognized.

Purpose of the Study:

• To investigate cognitive performance in primary ketamine users compared to controls.
• To examine potential sex differences in the cognitive effects of ketamine use.

Main Methods:

• Recruitment of 100 primary ketamine users and 100 controls in Hong Kong (2009-2011).
• Comprehensive cognitive assessment including general intelligence, memory (working, verbal, visual), and executive functions.
• Statistical analysis using a Univariate General Linear Model to compare cognitive performance between sexes and groups.

Main Results:

• Ketamine users exhibited cognitive impairments compared to controls (details not specified in abstract).
• Female ketamine users demonstrated a significantly higher risk of visual memory impairment than male users.
• No significant differences were noted between male users and controls, or female users and controls for other cognitive domains (implied).

Conclusions:

• Ketamine use is associated with cognitive deficits, with a notable sex-specific vulnerability in visual memory for females.
• Further research is essential to elucidate the neurobiological mechanisms underlying these sex-specific effects of ketamine on cognition.