The invention relates to a preparation method of a stable
rat model for primary dysmenorrhea with syndrome of cold coagulation and
blood stasis, belongs to the technical field of
animal model construction, and particularly relates to a construction method of a
rat model for primary dysmenorrhea according with the
pathogenesis characteristics of cold coagulation and
blood stasis in
traditional Chinese medicine. The model simulates the
pathological process of cold evil invasion and
uterus stasis and combines a modern medical
hormone intervention means to realize the construction of a'
disease and syndrome combined '
animal model, and is mainly used for the anti-dysmenorrhea mechanism research and
drug screening of
traditional Chinese medicine compound,
acupuncture and other therapies. The adopted preparation method comprises the steps that 0.4 mg of estradiol benzoate is subcutaneously injected to each rat every day for 12 days, the injection dosage of the first day and the injection dosage of the last day are increased to 2 times, the rats are placed in the environment of-20 DEG C after injection is completed,
epinephrine is injected twice every day from the 6th day of molding, and 2 U of
oxytocin is injected to each rat intraperitoneal cavity 24 hours after the
epinephrine is injected for the last time. The
animal model obtained through the method is stable in
phenotype and good in
repeatability, compared with pure cold or pure
irritation, more remarkable pain behaviors and biochemical changes can be obtained in a short period through combination with
epinephrine, and pharmacodynamic screening is facilitated.