RESUMO
Objective: This study aimed to assess the effects of daily use of Cimicifuga racemosa on endothelial function through flow-mediated dilation of the brachial artery, when used for 28 days by healthy postmenopausal women.Methods: The double-blind, randomized, placebo-controlled study included two groups of postmenopausal women (n = 31 each). The subjects were clinically assessed and flow-mediated dilation of the brachial artery was measured before and after 28 days of treatment. Patients received dry extract corresponding to 160 mg C. racemosa (extract with 4 mg of triterpene glycosides) or placebo.Results: Mean age, time since menopause, and body mass index in the two groups were similar. The measurements of flow-mediated dilation of the brachial artery, pre and post treatment, respectively, showed a significant increase in patients who used C. racemosa (p = 0.006), unlike patients who used placebo, who did not present changes in the outcome of flow-mediated dilation of the brachial artery after 28 days of use (p ≥ 0.05). When comparing the number of women in both groups who showed an increase in flow-mediated dilation, a significant difference was found in the measurements of the treated group after the use of the medication (p = 0.018).Conclusions: Daily use of 160 mg C. racemosa extract by postmenopausal women for 28 days beneficially influences endothelial function by promoting elasticity of the brachial artery.
Assuntos
Artéria Braquial/fisiologia , Cimicifuga , Fogachos/tratamento farmacológico , Extratos Vegetais/uso terapêutico , Vasodilatadores/uso terapêutico , Velocidade do Fluxo Sanguíneo , Método Duplo-Cego , Endotélio Vascular/efeitos dos fármacos , Feminino , Humanos , Pessoa de Meia-Idade , Fitoterapia , Extratos Vegetais/farmacologia , Estudos Prospectivos , Fluxo Pulsátil , Resultado do Tratamento , Vasodilatadores/farmacologiaRESUMO
Objective To evaluate the effect of short-term hormone replacement therapy with tibolone 2.5 mg daily on endothelial function of healthy postmenopausal women, using flow-mediated dilation (FMD) of the brachial artery. Methods We performed a randomized, double-blinded, placebo-controlled study. A total of 100 healthy postmenopausal women were randomly allocated to receive tibolone (n = 50) or placebo (n = 50) for 28 days. Measurement of the FMD of the brachial artery was performed before and after the use of tibolone and placebo. Results A total of 31 women completed the study in the tibolone group, and 32 women completed the study in the control group. The results of the FMD measurements obtained from the women in the two groups before treatment were similar (0.018 and 0.091, for tibolone and placebo, p = 0.57). The values of the FMD in women who used tibolone and placebo, before and after the treatment, were similar in both groups. The numbers of women who presented an increase in the values of the FMD in both groups were also similar. Conclusion Our results demonstrate that the administration of 2.5 mg tibolone to healthy postmenopausal women for 28 days does not promote endothelial-dependent vasodilation, measured by FMD of the brachial artery.
Assuntos
Endotélio Vascular/efeitos dos fármacos , Endotélio Vascular/fisiologia , Moduladores de Receptor Estrogênico , Norpregnenos/administração & dosagem , Artéria Braquial/fisiologia , Método Duplo-Cego , Feminino , Terapia de Reposição Hormonal , Humanos , Pessoa de Meia-Idade , Norpregnenos/efeitos adversos , Placebos , Pós-Menopausa , Estudos Prospectivos , Vasodilatação/efeitos dos fármacosRESUMO
PIP: The insertion of intrauterine devices (IUDs) in nulliparous women is a controversial subject, with no unanimous opinion on whether or not to use this method. A study was undertaken to analyze retrospectively the complications of the TCu-200 IUD in nulliparous women compared to complications encountered in multiparous women using the same device. In 1982 and 1983, the Family Planning and Human Reproduction Clinic of the UFMG Medical School in Belo Horizonte, Brazil, inserted 114 IUDs in nulliparas. The principle characteristics of the study group were a low socioeconomic condition, regularity of menstrual flow, and absence of vaginal infection at the time of examination. The choice of method was the spontaneous decision of the women. It was noted that nulliparas requested IUD insertion after previous unsatisfactory experience with other contraceptive methods. 56% of the group were single and 38% married. For comparison, 300 records of multiparous TCU-200 IUD users were studied retrospectively. All insertions were made by the same clinic. The racial, social, and economical characteristics were typical of the users of any free family planning service. Among early complications, pain and lipothymia were encountered at an elevated incidence in nulliparous women when compared to multiparas (p0.01). Among late complications, the appearance of vaginal discharge and metrorrhagia were significant when compared to multiparas (p0.05). Pelvic infection and dysmenorrhea, although more frequent in nulliparas, were not statistically significant. The authors concluded that the IUD should not be used as the contraceptive method of 1st choice in nulliparous women, using it only in exceptional situations.^ieng