四川宝兴虎耳草对大鼠慢性增生性前列腺炎的药理作用研究
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摘要
目的:通过建立大鼠慢性增生性前列腺炎模型,探讨宝兴虎耳草对慢性增生性前列腺炎的药理作用。
     方法:(1)慢性增生性前列腺炎模型建立选取雄性SD大鼠作为模型动物,将大鼠全麻保定确实后,无菌操作打开腹腔,于前列腺左、右两叶分别注入0.2ml消痔灵注射液,假手术对照组则注射等体积生理盐水,0.05%碘伏按压针眼,缝合腹壁肌肉和皮肤,12h后可自由饮食,术后每天用碘酊消毒创口,防止感染。通过与正常组进行比较,判定模型是否建立成功,筛选出最佳慢性增生性炎症病理模型建立方法。(2)药液制备将虎耳草水煎液熬制成100%的水煎液(即1mL煎液相当于生药1g)。(3)药效观察将体况相近的45只模型大鼠作为治疗组,分为9不同的组,即持续7天给药的高、中、低三组,和持续14、21天给药的高、中、低剂量组,每组5只。同时,将15只假手术组大鼠分成3组,每组5只分别作为持续7天、14天、21天给药的假手术对照组,另外15只模型大鼠则不给药,作为持续7天、14天、21天给药的模型对照组。(4)灌胃给药低剂量组1ml/只,中剂量组2ml/只,高剂量组4ml/只,灌胃给药,早晚各一次。(5)治疗效果的判定根据前列腺组织病理学变化、前列腺液白细胞总数和卵磷脂小体密度、前列腺指数、血清前列腺酸性磷酸酶(ACP)和超氧化物歧化酶(SOD)活力,丙二醛(MDA)和睾酮(T)含量,判定治疗效果,比较不同剂量和持续给药时间的治疗效果,筛选出最佳给药浓度和持续给药时间。
     结果:通过向前列腺两叶注射0.2ml消痔灵注射液成功建立大鼠慢性增生性前列腺炎模型;虎耳草水煎液各剂量和不同长短持续给药时间均表现出一定的治疗效果,低剂量组持续给药7天效果不明显,血清中的SOD活力和ACP水平与模型组差别不大,前列腺组织炎性病变较为严重,但白细胞总数和前列腺指数都有不程度的减小,而卵磷脂小体密度略有增加,血清睾酮水平也有所上升;给药14天以后,则可明显提高血清中SOD活力和睾酮含量,降低血清ACP和MDA,同时使前列腺组织炎性病变减轻,卵磷脂小体密度回升。随着治疗剂量的增加和持续给药时间的延长,治疗效果更为显著。以高剂组治疗效果最为明显,特别是持续给药21天,各项指标均趋近于正常,与模型组比较呈极显著性差异(P<0.01)。
     结论:虎耳草水煎液对大鼠慢性增生性前列腺炎有一定的治疗作用,随着给药剂量的加大和持续给药时间的延长,治疗效果愈趋显著。特别是高剂量(4g/只)持续灌胃21天以后,各项指标均趋近于正常。
Objective:A Pathological Model of Rats with chronic and proliferative prostatitis was established to study the effect to Saxifraga stolonifera on the model.
     Method:(1) Model of chronic and proliferative prostatitis:Selected male SD rats as model animal, after been anesthetized and restraint, open peritoneal cavity by sterile working. Then inject hemorrhoid injection 0.2ml to left and right lobe of prostate, while injecting equal-volume physiological saline into sham operated control group rats, and suture abdominal wall muscles and skin. Ingestation freely after 12h for operation, and sterilized wound to prevent infection. The model were determined succeed or not by compared with the normal groups, and screening the best method. (2) Physic liquor preparation:Decocting saxifrage to 100% water solution, it means there is 1g saxifrage in 1ml water solution. (3) Potency observation:Select 45 rats with similar body condition as the treatment group and divide them into 9 different groups, namely 7 days group,14 days group and 21 days group,and divide every group into high-dose group、middle-dose group and low-dose group,5 rats in every group. Meanwhile, the 15 sham operated rats for comparison were divided into 3 groups, such as 7 days group,14 days group and 21 days group,5 rats in every group. In addition, select 15 operation rats without medication as model group, and the grouping method just as the control group. (4) Intragastric administration with saxifraga stolonifera water solution in every night and morning. 1ml for a rat of low-dose group,2ml for a rat of middle-dose group and 4ml for a rat of high-dose group. (5) Determination of the treatment effect:The treatment effect could be determinated by those index as follows: pathological changes of prostate tissue, total white blood cells count and lecithin density of prostatic fluid, the activity of Serum prostatic acid phosphatase (ACP) and superoxide dismutase (SOD), and malondialdehyde (MDA) and testosterone (T) levels. Meanwhile, according to those index mentioned above, the treatment effect of different doses and sustained administration time could be compared.
     Results:The model of chronic prostatitis hyperplasia was successfully established by injecting hemorrhoid injection in two lobe of Prostate. Saxifrage decoction of different each dose group and sustained medication time indicated certain efficacy. Low-dose group for 7 days continue medication indicated little effect, and it could be seen that SOD and testosterone levels in blood serum were increased, ACP and MDA in blood serum were decreased, and lecithin density was rebound and inflammatory lesion of prostate was mitigated after continue medication for 14 days. As the dose increased and longer continue medication time, the treatment effect was more significant than before. The effect of high dose treatment group was most significant, especially the time of continue medication was 21 days, for all treatment indexs closing to normal,which showed great significant difference compared with the model group (P<0.01). Conclusion:Saxifrage decoction of different each dose group and sustained medication time indicated certain efficacy, as to the increased dose and extend continue medication, more significant has been discovered. Especially the time of continue medication was 21 days, for all treatment index closing to normal, which showed great significant difference compared with the model group.
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