Developmental effects of SSRIs: lessons learned from animal studies

Area of Science:

• Neuroscience
• Developmental Biology
• Pharmacology

Background:

• Selective serotonin reuptuptake inhibitors (SSRIs) are commonly prescribed for depression in pregnant and lactating women.
• SSRIs can cross the placenta and be transferred to neonates via breast milk, leading to potential developmental exposure.
• The long-term consequences of this peri- and postnatal SSRI exposure remain largely uncharacterized in humans.

Purpose of the Study:

• To review animal research investigating the role of serotonin in development.
• To explore the potential effects of SSRI exposure on neurodevelopment and behavior.
• To highlight the utility of model organisms in studying developmental neuropharmacology.

Main Methods:

• Review of experimental studies in animal models, primarily rodents.
• Examination of research on the effects of SSRI administration during critical developmental windows.
• Analysis of studies involving the inhibition of serotonin transporter (SERT) and monoamine oxidase (MAO).

Main Results:

• SSRI administration during key developmental periods in rodents induced persistent alterations in brain circuitry.
• These neurodevelopmental changes were associated with maladaptive behaviors persisting into adulthood.
• Inhibition of SERT or MAO produced similar developmental alterations, underscoring the role of serotonin signaling regulators.

Conclusions:

• Serotonin plays a crucial role in brain development.
• Peri- and postnatal SSRI exposure in animal models can result in long-lasting neurobehavioral changes.
• Further research is needed to fully understand the implications of developmental SSRI exposure.