A review of time-effect research on acupuncture in experimental rats/mice in the recent 10 years

Objective:To summarize the influence patterns of related time factors on acupuncture effectiveness in different disease model rats/mice,and to provide reference for acupuncture clinical practice.Methods:Retrieved the relevant literatures on time-effect experimental studies of acupuncture in rats/mice in the recent 10 years.The correlations between the key time factors(such as different intervention timings of acupuncture,acupuncture moments,operation durations,needle-retaining times,intervals and treatment courses)and the acupuncture effect were analyzed and summarized.Results:From the mainstream perspective of quantification,the earlier the acupuncture intervention,the better.The proper time to implement acupuncture varied depending on disease models and points.The best operation time varied widely between different diseases.The most frequently needle-retaining time was 20-30 min.The frequency of acupuncture was usually 1 time/day;the length of the treatment course was determined according to practitioners'experience.Conclusion:Throughout the time-effect studies of acupuncture intervention in experimental rats/mice,conclusions are inconsistent,especially the lack of quantitative research on acupuncture operation time,acupuncture frequency,acupuncture treatment duration,and optimal stimulation amount.Future research should explore and determine the best time-quantity parameters that affect the effectiveness of acupuncture intervention,which is the key and goal of the acupuncture time-effect research.Independent intervention-time experiments throughout the entire course of a single disease(dominant disease)need to be done to guide clinical and disciplinary development.