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美国泌尿学研究基金会负责人 Marks等用前列腺活组织检查法研究了锯齿棕的作用机理。他们用针刺活检法获取分别服用非那雄胺、锯齿棕提取物和安慰剂的良性前列腺肥大(BPH)患者的前列腺组织样品,比较样品中睾酮和二氢睾酮的水平。受试者分为3组,第1组15人,服非那雄胺5mg/d,共3个月或更长;另有7人为未治疗对照组。第2组22人,均进行前列腺切除术(其中18人是为了避免癌变,4人是为了缓解尿流梗阻)。第3组44人,其中21人服锯齿棕制剂,23人
Marks et al., head of the American Urological Research Foundation, used prostate biopsy to study the mechanism of action of serrated brown. They used acupuncture biopsy to obtain prostate tissue samples of patients with benign prostatic hypertrophy (BPH) taking finasteride, serrated brown palm extract and placebo, respectively, and comparing the levels of testosterone and dihydrotestosterone in the samples. Subjects were divided into 3 groups. The first group consisted of 15 subjects who received finasteride 5 mg/d for 3 months or longer. Another 7 subjects were untreated. 22 patients in group 2 underwent prostatectomy (18 of them were to prevent canceration and 4 of them were to relieve urinary flow obstruction). Group 3 44 people, 21 of whom served in sawtooth preparation, 23