[Research progress of puerarin antidepressant]

Area of Science:

• Pharmacology and Neuroscience
• Traditional Chinese Medicine (TCM)

Background:

• Puerarin, an isoflavonoid from Puerariae Lobatae Radix, is explored for antidepressant potential.
• Existing research suggests diverse molecular mechanisms for its efficacy.

Purpose of the Study:

• To systematically review and elaborate on the multi-target molecular mechanisms of puerarin's antidepressant effects.
• To evaluate puerarin's therapeutic potential in comorbid conditions and its clinical translation prospects.

Main Methods:

• Systematic review of domestic and international research on puerarin and depression.
• Analysis of molecular mechanisms including gut microbiota, neuroinflammation, neurotrophy, oxidative stress, HPA axis, and epigenetics.

Main Results:

• Puerarin modulates the gut microbiota-gut-brain axis, inhibits neuroinflammation, promotes neurogenesis, and ameliorates oxidative stress.
• It also influences neurotransmitters, the hypothalamic-pituitary-adrenal (HPA) axis, and epigenetic modifications.
• Potential synergistic effects in models of diabetes with depression and post-stroke depression were noted.

Conclusions:

• Puerarin exhibits complex, multi-target antidepressant mechanisms with potential for treating depression and comorbid conditions.
• Pharmacokinetic limitations (poor solubility, low bioavailability) and lack of robust clinical evidence hinder its current application.
• Further research into its mechanisms and improved delivery systems is crucial for clinical translation.