雌激素替代疗法对绝经后妇女血浆一氧化氮的影响

目的探讨雌激素替代疗法（ＥＲＴ）对绝经后妇女血浆一氧化氮（ＮＯ）含量的影响。方法测定１７例健康绝经后妇女（健康组）,２１例患高血脂症绝经后妇女（高血脂组）应用ＥＲＴ前及应用ＥＲＴ４周后血浆ＮＯ及血清雌二醇（Ｅ２）含量,并与１０例健康绝经后妇女应用安慰剂（对照组）进行对照。结果对照组应用安慰剂前后,ＮＯ含量无变化;健康组及高血脂组应用ＥＲＴ后,ＮＯ含量明显升高,健康组升高尤其明显;健康组应用ＥＲＴ４周后Ｅ２水平与ＮＯ升高有明显相关性。结论绝经后妇女补充雌激素,可通过升高ＮＯ含量发挥其对心血管的保护作用。     

Menopause rather than estrogen modifies plasma homocysteine levels.

OBJECTIVES: To investigate the effects of transdermal estrogen replacement therapy (ERT) on plasma homocysteine levels in postmenopausal women who underwent total hysterectomy with bilateral oophorectomy. METHODS: In two-phase open longitudinal prospective study we compared 28 premenopausal women and 35 healthy postmenopausal patients to evaluate the effect of transdermal estrogen treatment (TTS 50 twice-weekly) on plasma homocysteine levels after 6 and 12 months of therapy. RESULTS: The study showed statistically relevant differences (P<0.05) in baseline plasma homocysteine concentration between the patients in premenopausal and in postmenopausal status. No difference in the plasma homocysteine levels was observed after 6 and 12 months of ERT on postmenopausal patients. CONCLUSIONS: Surgically postmenopausal women have higher plasma homocysteine concentrations than premenopausal women, but transdermal estrogen treatment for 12 months in postmenopausal women does not modify homocysteine levels.     

口服替勃龙或替勃龙加妊马雌酮对绝经后乳腺增生的影响

目的:观察绝经后口服替勃龙以及替勃龙加妊马雌酮两种治疗方案对乳腺增生的影响,评估替勃龙及其配伍方案作为激素补充治疗方案的安全性。方法:5 0例绝经后伴有乳腺增生病例,随机分为两组,分别接受替勃龙1.2 5mg每日1次或替勃龙1.2 5mg每日1次加妊马雌酮0 .3mg隔日1次,共服用6个月。并在用药前、用药6个月后行乳腺B超检查,根据治疗前后乳腺B超报告的乳腺导管、纹理及结节的变化情况分别比较两组用药前后的对乳腺增生的影响。结果:替勃龙组治疗后,双侧乳腺导管明显缩小,治疗前后差异有非常显著性(P <0 .0 1)。替勃龙加妊马雌酮组治疗后变化小,治疗前后差异无显著性(P >0 .0 5 )。用药前后替勃龙组左侧乳腺导管治疗变化百分比较替勃龙加妊马雌酮组改变明显(P <0 .0 5 ) ,单纯替勃龙组用药前后乳腺纹理增粗、乳腺结节对比变化有显著性(P <0 .0 5 ) ,而替勃龙加妊马雌酮组变化没有显著性(P >0 .0 5 )。结论:对于有绝经症状并患有乳腺增生的妇女应选择对乳腺影响小又能缓解症状的药物,替勃龙应该是一种较好的选择。     

Effects of estrogen dose and smoking on lipid and lipoprotein levels in postmenopausal women

The joint effects of conjugated estrogen use, age, body mass index, and smoking on plasma lipid and lipoprotein levels were assessed in 585 women who used oral estrogen and 1093 women who did not who participated in the Walnut Creek Contraceptive Drug Study. Whether administered daily or cyclically, conjugated estrogen was associated with reductions in low-density lipoprotein cholesterol levels and increases in high-density lipoprotein cholesterol and triglyceride levels. The adjusted mean low-density lipoprotein cholesterol concentration was 132 mg/dl for women who used conjugated estrogen in a dose ≥ 1.25 mg/day; the adjusted corresponding mean concentration was 147 mg/dl for postmenopausal women who did not use estrogen. A dose-response pattern was demonstrated between conjugated estrogen and low- and high-density lipoprotein cholesterol levels. A maximum low-density lipoprotein cholesterol level reduction was reached at a dose of 1.25 mg, suggesting a saturation phenomenon. Stepwise dose-response increases in high-density lipoprotein cholesterol levels were also found with estrogen therapy, with a maximum increase of 8 to 10 mg/dl observed with the 1.25 mg dose. Estrogen-related rises in low-density lipoprotein cholesterol levels and decreases in high-density lipoprotein cholesterol levels were offset by 2 to 3 mg/dl in women who smoked. It may be concluded, therefore, that among postmenopausal women, low-risk lipoprotein profiles as assessed by low- and high-density lipoprotein cholesterol levels are found in nonsmokers whose postmenopausal hormone therapy includes the equivalent of a conjugated estrogen dose of 1.25 mg.     

绝经后妇女激素补充治疗后同型半胱氨酸及超声心动图改变的初步观察

目的　观察绝经后妇女激素补充治疗 (HRT)后血浆总同型半胱氨酸 [H(e) ]及超声心动图的改变。方法　将受试者分为 4组。Ⅰ组、Ⅱ组为自然绝经妇女 ,各 30例 ,其中Ⅰ组给予HRT(结合雌激素 0 6 2 5mg d ,安宫黄体酮 2mg d ,或者每月后 14d加安宫黄体酮 4mg d) 3个月 ;Ⅱ组不给予HRT ,为对照 ;Ⅲ组 2 0例 ,为已接受HRT1 5年的绝经后妇女 ;Ⅳ组 2 0例 ,为从未应用HRT的绝经后妇女。Ⅰ组、Ⅱ组受试者于接受HRT前及接受HRT 3个月后测定H(e) ;Ⅲ组、Ⅳ组受试者测定H(e) ,并行超声心动图检查。结果　Ⅰ组、Ⅱ组接受HRT 3个月前后H(e)无明显变化 ,Ⅰ组接受HRT前为(9 3± 2 5 ) μmol L ,Ⅱ组为 (9 4± 2 9) μmol L ;Ⅰ组接受HRT后H(e)为 (9 1± 2 8) μmol L ,Ⅱ组为(9 8± 3 6 ) μmol L。两组比较 ,差异无显著性 (P >0 0 5 )。Ⅲ组H(e)明显低于Ⅳ组 ,分别为 (8 0±1 3) μmol L及 (10 3± 3 2 ) μmol L。两组比较 ,差异有显著性 (P <0 0 5 )。Ⅲ组、Ⅳ组的超声心动图检查结果无明显改变。结论　短期应用HRT对H(e)无明显改善 ,长期应用HRT可降低H(e)水平。绝经后妇女应用HRT 1 5年 ,未见超声心动图有明显变化。     

成都市围绝经期和绝经后妇女对激素替代治疗的认知和接受程度

目的 :调查成都市中老年妇女绝经状况和激素替代治疗 (HRT)的使用和认知状况 ,为有针对性地开展生殖健康服务提供依据。方法 :经调查表对成都市市区和郊县的190 6名 4 4岁以上妇女进行横断面研究。结果 :成都市妇女平均绝经年龄为 4 8岁 ,2 5 .4 %的妇女应用过HRT。近 1/3的妇女了解HRT。 5 0 %的妇女希望得到这方面的教育。获得信息的主要途径是医生、亲友、医学书籍和传媒。结论 :成都市中老年妇女的生殖健康知识较为贫乏 ,应将宣传教育和医学服务相结合 ,提高妇女的生活质量     

激素替代治疗对绝经后妇女血清脂蛋白(a)的影响

目的 探讨戊酸雌二醇和倍美力对心血管疾病独立危险因子脂蛋白(a)[Lp(a)]的影响。方法 60例绝经后病例,按1:1随机分成两组,行连续序贯方案治疗,其中倍美力组30例口服结合雌激素0.625mg/d加醋酸甲孕酮4mg/d;戊酸雌二醇组30例口服戊酸雌二醇1mg/d加醋酸甲孕酮4mg/d。两组均连续治疗16周,于用药前、用药9周、16周取血测定血Lp(a),同时测血雌二醇水平。结果 两组用药后9周和16周Lp(a)均显著下降(P<0.01);两组间用药各时相Lp(a)水平差异无显著性(P>0.05)。两组用药前后E_2水平均显著升高(P<0.01),达正常月经周期早卵泡期水平。结论 激素替代治疗可使心血管疾病独立危险因子Lp(a)降低。     

Effects of tibolone on plasma levels of nitric oxide in postmenopausal women

OBJECTIVE: To determine the effects of tibolone on nitric oxide (NO) plasma levels in postmenopausal women.DESIGN: Randomized, double-blind, placebo-controlled, cross-over trial.SETTING: Healthy volunteers in an academic research environment.PATIENT(S): Eighteen healthy women who have been in postmenopause for 1-4 years.INTERVENTION(S): Women received either tibolone 2.5 mg/day (group A) or placebo (group B) for 1 month; then the treatment was inverted for the second month.MAIN OUTCOME MEASURE(S): Plasma concentration of NO stable oxidation products and blood pressure were evaluated at baseline, month 1, and month 2.RESULT(S): Baseline concentration of NO metabolites were similar in both groups. At month 1, mean concentration of NO metabolites increased significantly in group A alone. At the end of month 2, NO metabolite levels in group A returned to baseline, whereas in group B they increased significantly.CONCLUSION(S): Tibolone induced a sustained increase in plasma levels of NO in postmenopausal women, suggesting that tibolone may exert a direct cardiovascular protective effect in postmenopausal women.     

Effects of estrogen therapy on hearing in postmenopausal women

OBJECTIVE: This study was undertaken to investigate how hormone therapy affects hearing in postmenopausal women. STUDY DESIGN: This prospective study involved 109 postmenopausal women. Twenty of the women were using estrogen therapy (ET group), 30 women were using hormone therapy (HT group), and 59 had not received hormone therapy of any kind (control group). Otoscopic examination revealed normal tympanic membranes in all 109 subjects. Each individual was tested with low- (250-2000 Hz) and high-frequency audiometry (4000-16000 Hz). Duration of hormone therapy was recorded, and patient characteristics (age, type of menopause, time since onset of menopause), body mass index (BMI), and hearing test results in the ET, HT, and control groups were compared. RESULTS: There were no statistically significant differences between the treatment (ET and HT group) and control groups with respect to age, BMI, or time since onset of menopause. The mean time on HT and ET was 4.13+/-2.41 years and 3.35+/-2.20 years, respectively. The mean air conduction results at low frequencies (250, 500, 1000, and 2000 Hz) in the ET group were significantly higher than the corresponding findings in the control group (P<.001) and than the HT group (P<.001). When the same comparisons were made between the HT group and the control group, none of the differences was statistically significant (P>.05). The mean air-conduction results at high frequencies (4, 6, 8, 10, 12, 14, and 16 kHz) in the ET group were significantly higher than the corresponding results in the HT group (P<.008). ET versus controls and HT versus controls at high frequencies revealed no significant differences (P>.05). The mean bone conduction results in the ET group were significantly higher than the corresponding findings in the control group (P<.016). Analysis of the same comparisons between the HT-ET and HT-control groups revealed no significant differences (P>.05). CONCLUSION: Estrogen therapy may slow down hearing loss in aging postmenopausal women; however, further studies of larger series are needed to confirm this, and the sites of hormonal action must also be explored.     

Effects of hormone replacement therapy on plasma viscosity and Doppler variations in postmenopausal non-smokers and heavy smokers

Objectives.?To evaluate the effects of transdermal hormone replacement therapy (HRT) on some biological cardiovascular risk factors, specifically thromboxane B₂ level and plasma viscosity. Furthermore, we investigated Doppler flow modifications at the level of the uterine, internal carotid, ophthalmic and bladder wall arteries, and evaluated whether there were significant differences, in the examined parameters, between postmenopausal women who were non-smokers and heavy smokers.

Methods.?Forty-three postmenopausal women (age 53.6?±?3.3 years, mean?±?standard deviation) participated in the study and were divided into two groups (Group I: n?=?21, normal controls; and Group II: n?=?22, heavy smokers). Patients were treated with continuous estradiol transdermal supplementation and 12-day courses of medroxyprogesterone acetate every 2 months. They were studied at baseline and after 6 months (in the estrogen-only phase of the cycle).

Results.?Results showed a beneficial effect of hormone substitution after 6 months of therapy. Plasma viscosity decreased significantly after 6 months of therapy both in non-smokers and heavy smokers (–18% and –?14%, respectively). Plasma levels of thromboxane B₂, which were similar at baseline, underwent a dramatic reduction in both Group I and Group II (–93% and –?88%, respectively). Doppler assessment of pulsatility index at the level of the uterine, internal carotid, ophthalmic and bladder wall arteries showed a significant reduction in vascular impedance at the end of treatment in both groups. However, the treatment was significantly less beneficial, in terms of the analyzed factors, in heavy smokers.

Conclusions.?Cigarette smoking represents a cardiovascular risk factor that can only partially be modified by the administration of transdermal HRT.     

雌激素替代治疗对绝经后妇女血清一氧化氮和脑血流的影响

目的 :探讨雌激素替代治疗对绝经后妇女大脑中动脉血流的影响及其作用机制。方法 :接受结合型雌激素 0 .6 2 5mg d治疗 3个月的绝经后妇女 2 5例 ,于治疗前后对比观察血清雌二醇 (E2 )、一氧化氮 (NO)及大脑中动脉搏动指数 (PI)变化。结果 :ERT治疗3个月后血清E2 、NO浓度较治疗前明显升高 (P <0 .0 1) ,而大脑中动脉PI明显降低 (P<0 .0 1)。同时 ,服药前后NO升高与PI降低有显著相关性 (r =0 .56 ,P <0 .0 5)。结论 :ERT可增加脑血流量 ,其机制可能与NO水平升高有关     

Effects of sequential combined transdermal and oral hormone replacement therapies on serum lipid and lipoproteins in postmenopausal women

The aim of this study was to compare the effects of sequential combined transdermal and oral postmenopausal hormone replacement therapies on serum lipid-lipoprotein profiles risk markers for cardiovascular disease. A prospective randomize study was designed: Ninety-six healthy nonhysterectomised postmenopausal women were randomized to receive either transdermal continuous 17β-estradiol, 0.05 mg/d (Estraderm TTS, Novartis, Basel, Switzerland), with transdermal sequential norethisterone acetate, 0.25 mg/d (Estragest TTS, Novartis, Basel, Switzerland), or oral continuous conjugated equine estrogens, 0.625 mg/d (Premarin 0.625 mg, Wyeth, Philadelphia, U.S.A.), with oral sequential medroxyprogesterone acetate, 10 mg/d (Farlutal 5 mg, Deva, Istanbul, Turkey). 84 women completed the trial, 42 in oral and 42 in the transdermal group. The serum levels of total cholesterol, LDL-cholesterol, HDL-cholesterol, triglycerides, apolipoproteins AI and apolipoproteins B at 6 months after starting treatment were compared with baseline values for both therapies. Both oral and transdermal therapies significantly reduced serum levels of total cholesterol (208– 190 mg/dL and 216–199 mg/dL, respectively, p=0.0001) and LDL-cholesterol (128–112 mg/dL and 140– 127 mg/dL, respectively, p=0.001). The serum levels of triglycerides did not show any significant change with oral therapy, whereas this lipid fell (128–101 mg/dL, p=0.0001) significantly with transdermal therapy. We found significant decrease in HDL-cholesterol with transdermal therapy while there was no significant change with oral therapy. Apolipoproteins AI, the major protein component of HDL₂ subfraction, was increased by oral therapy and lowered by transdermal therapy. As a conclusion, we have found that serum total cholesterol and LDL-cholesterol were lowered by both therapies, with no significant differences between treatments, whereas there were significant differences between treatments according to effects on serum triglycerides and apolipoproteins AI. Received: 15 May 2001 / Accepted: 20 July 2001     

Effects of tibolone on plasma homocysteine levels in postmenopausal women

OBJECTIVE: To investigate the effects of tibolone on levels of plasma homocysteine, an independent risk factor for cardiovascular disorders, in postmenopausal women. DESIGN: Prospective, randomized clinical study. SETTING: University hospital. PATIENT(S): Postmenopausal healthy women. INTERVENTION(S): Tibolone (2.5 mg/d) or calcium (1250 mg/d) and conjugated equine estrogens (0.625 mg/d) plus medroxyprogesterone acetate (5 mg/d) were administered orally for 6 months. Blood samples were collected at the start and the end of therapy. MAIN OUTCOME MEASURE(S): Plasma homocysteine levels. RESULT(S): Administration of tibolone and calcium caused only a 4% decrease in plasma homocysteine levels compared with initial levels. In contrast, conjugated equine estrogens plus medroxyprogesterone acetate caused a 29% decrease in plasma homocysteine levels. CONCLUSION(S): Despite the reported beneficial effect of tibolone on the serum lipid profile, tibolone had no statistically significant effect on serum homocysteine levels in postmenopausal women. The possible cardiovascular protective role of tibolone might be unrelated to its effects on homocysteine levels.     

Cardiovascular risk assessment with oxidised LDL measurement in postmenopausal women receiving intranasal estrogen replacement therapy

Objective.?To investigate the effect of intranasal estrogen replacement therapy administered to postmenopausal women alone or in combination with progesterone on markers of cardiovascular risk.

Methods.?The study was conducted with 44 voluntary postmenopausal women. In group I (n?=?15), the patients were treated with only intranasal estradiol (300?μg/day estradiol hemihydrate). In group II (n?=?11), the patients received cyclic progesterone (200 mg/day micronized progesterone) for 12 days in each cycle in addition to continuous intranasal estradiol. Group III (n?=?18) was the controls. Serum lipid profiles, oxidised low-density lipoprotein (LDL) and other markers of cardiovascular risk were assessed at baseline and at the 3rd month of the treatment.

Results.?Lipid profile, LDL apolipoprotein B, lipoprotein a, homocysteine, oxidised LDL values and oxidised LDL/LDL cholesterol ratio were not observed to change after 3 months compared to baseline values within each group (p?>?0.016). In comparison to changes between the groups after the treatment, only oxidised LDL levels and oxidised LDL/LDL cholesterol ratios of group II were increased compared to control group (p?<?0.05).

Conclusions.?Intranasal estradiol alone did not appear to have an effect on markers of cardiovascular risk in healthy postmenopausal women. However, the addition of cyclic oral micronized progesterone to intranasal estradiol influenced the markers of cardiovascular risk negatively in comparison to non-users in healthy postmenopausal women.     

Effects of hormone therapy with estrogen and/or progesterone on sleep pattern in postmenopausal women

OBJECTIVE: To investigate the effects of estrogen and progesterone on sleep in postmenopausal women. METHOD: The 33 participants were randomly assigned to an estrogen or placebo group after undergoing clinical and hormonal assessments and a polysomnogram, and they underwent the same tests again after 12 weeks. Then, while still taking estrogen or placebo, they all received progesterone for another 12 weeks and underwent a final polysomnogram. RESULTS: Estrogen plus progesterone was more effective than estrogen alone in decreasing the prevalence of periodic limb movement (PLM) (8.1% vs 2.8%), hot flashes (14.2% vs 0%), and bruxism (11.1% vs 0%) at night, or somnolence and attention difficulty during the day. The prevalences of breathing irregularities, arousal from sleep, anxiety, and memory impairment were decreased in both groups following progesterone treatment. CONCLUSION: While not significantly affecting sleep quality, hormone therapy decreased the prevalence of arousal in both groups and that of PLM in the group treated with estrogen plus progesterone.     

Serum lipid peroxides and total antioxidant status in postmenopausal women on hormone replacement therapy

Estradiol (E₂) has antioxidant properties. The role of progestins in antioxidant defense is still unknown. We have evaluated the influence of E₂ and E₂ plus medroxyprogesterone acetate (MPA) on serum lipid peroxide (LPO) levels, a marker of free radical reactions, and serum total antioxidant status (TAS) in postmenopausal women. Subjects consisted of 26 women with surgical menopause, before and after 4 months of estrogen replacement therapy (ERT; E₂), and 54 women with natural menopause on hormone replacement therapy (HRT; E₂ plus MPA). Forty premenopausal women served as a control group. Serum E₂ was estimated by radioimmunoassay, follicle-stimulating hormone by IRMA methods, LPO and TAS by colorimetric methods. Before therapy, LPO levels in the postmenopausal women were significantly higher (p?<?0.001) than in the control group. After both ERT and HRT, LPO decreased significantly and did not differ between both groups and the control group. TAS was significantly lower in postmenopausal women (p?<?0.001) than in the control group before therapy. After both ERT and HRT, TAS increased significantly and did not differ between both groups and the control group. We conclude that oxidative stress is increased after menopause. ERT and HRT inhibit the generation of free radicals and raise antioxidant potential to the levels found in premenopausal women. MPA did not influence the antioxidant action of E₂.     

Short-term effects of hormone therapy on serum C-reactive protein levels in postmenopausal women

Objectives: The aim of this study was to investigate the effects of tibolone and conjugated equine estrogens (CEEs) plus medroxyprogesterone acetate (MPA) (CEE + MPA) on levels of serum C-reactive protein (CRP), an independent risk factor for cardiovascular disorders, in postmenopausal women. Study design: In this prospective randomized study, we randomly assigned 58 healthy postmenopausal women to CEE (0.625 mg/day) plus MPA (2.5 mg/day) (CEE + MPA) or tibolone (2.5 mg/day). The serum levels of CRP at 3 months after starting treatment were compared with baseline values for both therapies. Results: After 3 months of treatment the median CRP levels increased by 29% in the CEE + MPA group and by 5% in the tibolone group. But, these changes did not have statistical significance (P=0.15, P=0.06, respectively). Conclusions: Our findings show that neither tibolone nor CEE + MPA caused significant changes in serum CRP levels in postmenopausal women. The potential impact of hormone therapy on serum CRP levels should be investigated in ongoing clinical trials.