Prozac exposure during adolescence increases pain sensitivity in adulthood

Area of Science:

• Neuroscience
• Pharmacology
• Developmental Biology

Background:

• Selective serotonin reuptake inhibitor (SSRI) prescriptions, including fluoxetine (FLX), are increasing in adolescent females.
• FLX treats mood disorders, premenstrual dysphoric disorder, and pain, but long-term side effects are not fully understood.

Purpose of the Study:

• To investigate if adolescent exposure to fluoxetine influences thermal nociception in adulthood.
• To assess the long-term safety of early-life antidepressant exposure in females.

Main Methods:

• Postnatal day 35 female mice received fluoxetine (250 mg/L) for 15 days.
• Adult mice (PD70) were tested for thermal nociception using the hot plate test.

Main Results:

• Adult mice with a history of juvenile fluoxetine exposure showed reduced body weight.
• These mice also exhibited decreased latency to hindpaw-licking, indicating thermal hyperalgesia.

Conclusions:

• Juvenile fluoxetine exposure appears to induce long-term thermal hyperalgesia in female mice.
• These findings raise concerns about the safety of antidepressant use during critical developmental stages in females.