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Nie G, Yang X, Wang Y, Liang W, Li X, Luo Q, Yang H, Liu J, Wang J, Guo Q, Yu Q, Liang X. The Effects of Menopause Hormone Therapy on Lipid Profile in Postmenopausal Women: A Systematic Review and Meta-Analysis. Front Pharmacol 2022; 13:850815. [PMID: 35496275 PMCID: PMC9039020 DOI: 10.3389/fphar.2022.850815] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 02/28/2022] [Indexed: 02/01/2023] Open
Abstract
Importance: The incidence of dyslipidemia increases after menopause. Menopause hormone therapy (MHT) is recommended for menopause related disease. However, it is benefit for lipid profiles is inconclusive. Objective: To conduct a systematic review and meta-analysis of randomized controlled trials to evaluate the effects of MHT on lipid profile in postmenopausal women. Evidence Review: Related articles were searched on PubMed/Medline, EMBASE, Web of Science, and Cochrane Library databases from inception to December 2020. Data extraction and quality evaluation were performed independently by two reviewers. The methodological quality was assessed using the "Cochrane Risk of Bias checklist". Results: Seventy-three eligible studies were selected. The results showed that MHT significantly decreased the levels of TC (WMD: -0.43, 95% CI: -0.53 to -0.33), LDL-C (WMD: -0.47, 95% CI: -0.55 to -0.40) and LP (a) (WMD: -49.46, 95% CI: -64.27 to -34.64) compared with placebo or no treatment. Oral MHT led to a significantly higher TG compared with transdermal MHT (WMD: 0.12, 95% CI: 0.04-0.21). The benefits of low dose MHT on TG was also concluded when comparing with conventional-dose estrogen (WMD: -0.18, 95% CI: -0.32 to -0.03). The results also showed that conventional MHT significantly decreased LDL-C (WMD: -0.35, 95% CI: -0.50 to -0.19), but increase TG (WMD: 0.42, 95%CI: 0.18-0.65) compared with tibolone. When comparing with the different MHT regimens, estrogen (E) + progesterone (P) regimen significantly increased TC (WMD: 0.15, 95% CI: 0.09 to 0.20), LDL-C (WMD: 0.12, 95% CI: 0.07-0.17) and Lp(a) (WMD: 44.58, 95% CI:28.09-61.06) compared with estrogen alone. Conclusion and Relevance: MHT plays a positive role in lipid profile in postmenopausal women, meanwhile for women with hypertriglyceridemia, low doses or transdermal MHT or tibolone would be a safer choice. Moreover, E + P regimen might blunt the benefit of estrogen on the lipid profile. Clinical Trial Registration: [https://www.crd.york.ac.uk/prospero/display_record.php?ID=CRD42018092924], identifier [No. CRD42018092924].
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Affiliation(s)
- Guangning Nie
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiaofei Yang
- The Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yangyang Wang
- Department of Standardization of Traditional Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wanshi Liang
- The Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xuewen Li
- State Key Laboratory of Dampness Syndrome of Chinese Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- Department of Cardiovascular Medicine, Guangdong Provincial Hospital of Chinese Medicine, Guangzhou, China
| | - Qiyuan Luo
- Health Science Center, Shenzhen University, Shenzhen, China
| | - Hongyan Yang
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jian Liu
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiajing Wang
- The Second Clinical Medical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qinghua Guo
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qi Yu
- Department of Gynecology, Peking Union Medical College Hospital, Beijing, China
| | - Xuefang Liang
- Department of Gynecology, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
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Jeong HS, Hong SJ, Cho SA, Kim JH, Cho JY, Lee SH, Joo HJ, Park JH, Yu CW, Lim DS. Comparison of Ticagrelor Versus Prasugrel for Inflammation, Vascular Function, and Circulating Endothelial Progenitor Cells in Diabetic Patients With Non-ST-Segment Elevation Acute Coronary Syndrome Requiring Coronary Stenting: A Prospective, Randomized, Crossover Trial. JACC Cardiovasc Interv 2018; 10:1646-1658. [PMID: 28838475 DOI: 10.1016/j.jcin.2017.05.064] [Citation(s) in RCA: 77] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 04/05/2017] [Accepted: 05/04/2017] [Indexed: 12/23/2022]
Abstract
OBJECTIVES This study compared adenosine-associated pleiotropic effects of the 2 P2Y12 receptor antagonists on vascular function, systemic inflammation, and circulating endothelial progenitor cells (EPCs). BACKGROUND Both ticagrelor and prasugrel have potent antiplatelet effects. However, only ticagrelor inhibits cellular uptake of adenosine. METHODS Using a randomized, crossover design with 10-week follow-up ticagrelor or prasugrel was administered to type 2 diabetic patients with non-ST-segment elevation acute coronary syndrome requiring stent implantation. A total of 62 patients underwent randomization in a 1:1 ratio to receive ticagrelor or prasugrel for 5 weeks followed by a direct cross over to the alternative treatment for 5 additional weeks. Brachial artery flow-mediated dilation, inflammatory markers, and number of circulating EPCs were compared. RESULTS Improvement in brachial artery flow-mediated dilation was greater in the ticagrelor group (0.15 ± 0.19 mm vs. -0.03 ± 0.18 mm; p < 0.001). Moreover, ticagrelor compared with prasugrel decreased interleukin 6 (-0.58 ± 0.43 pg/ml vs. -0.05 ± 0.24 pg/ml; p < 0.001), tumor necrosis factor alpha (-5.62 ± 4.40 pg/ml vs. -0.42 ± 2.64 pg/ml; p < 0.001), and increased adiponectin (2.31 ± 2.00 μg/ml vs. 0.08 ± 1.50 μg/ml; p < 0.001) during 10-week follow-up. Other inflammatory cytokines like high-sensitivity C-reactive protein and soluble vascular cell adhesion molecule-1 were decreased in both groups. Ticagrelor compared with prasugrel significantly increased absolute numbers of circulating EPCs CD34+/KDR+ (42.5 ± 37.8 per μl vs. -28.2 ± 23.7 per μl; p < 0.001), CD34+/CD117+ (51.9 ± 77.2 per μl vs. -66.3 ± 45.2 per μl; p < 0.001), and CD34+/CD133+ (55.2 ± 69.2 per μl vs. -28.0 ± 34.1 per μl; p < 0.001). CONCLUSIONS Compared with prasugrel, ticagrelor significantly decreased inflammatory cytokines such as interleukin 6 and tumor necrosis factor alpha and increased circulating EPCs, contributing to improved arterial endothelial function in diabetic non-ST-segment elevation acute coronary syndrome patients. Thus, data support that pleiotropic effects of ticagrelor beyond its potent antiplatelet effects could contribute to additional clinical benefits. (Comparison of Ticagrelor vs. Prasugrel on Inflammation, Arterial Stiffness, Endothelial Function, and Circulating Endothelial Progenitor Cells in Diabetic Patients With Non-ST Elevation Acute Coronary Syndrome [NSTE-ACS] Requiring Coronary Stenting; NCT02487732).
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Affiliation(s)
- Han Saem Jeong
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Soon Jun Hong
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea.
| | - Sang-A Cho
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Jong-Ho Kim
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Jae Young Cho
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Seung Hun Lee
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Hyung Joon Joo
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Jae Hyoung Park
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Cheol Woong Yu
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
| | - Do-Sun Lim
- Department of Cardiology, Cardiovascular Center, Korea University Anam Hospital, Seoul, Republic of Korea
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Abstract
A need exists for a regulatory agency-approved hormone therapy (HT) with naturally occurring hormones combining progesterone (P4) and estradiol (E2), since no single product contains both endogenous hormones. Many women choose HT with P4 and millions of women around the world are using unapproved, poorly regulated compounded HT. The use of natural P4 in HT results, for the most part, in favorable outcomes without deleterious effects, as shown in clinical studies of postmenopausal women. Importantly, P4 used in HT prevents endometrial hyperplasia from estrogens while helping relieve vasomotor symptoms and improving quality-of-life measures. Additionally, risk of venous thromboembolism and breast cancer does not appear to increase with use of P4 plus estrogens as shown with synthetic progestins plus estrogens in large observations studies, and no detrimental effects of P4 in HT have been found on outcomes related to cardiovascular disease or cognition. A regulatory agency-approved HT with naturally occurring E2/P4 could be an option for the millions of women who desire a bioidentical product and/or are exposed to potential risks of inadequately studied and under-regulated compounded HT.
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Affiliation(s)
- S Mirkin
- a TherapeuticsMD , Boca Raton , FL , USA
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4
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Kaji H. Adipose Tissue‐Derived Plasminogen Activator Inhibitor‐1 Function and Regulation. Compr Physiol 2016; 6:1873-1896. [DOI: 10.1002/cphy.c160004] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Akman L, Duygu H, Akercan F, Ulukus M, Ozerkan F, Akin M. The effects of different hormone treatment on endothelial function in healthy postmenopausal women. Gynecol Endocrinol 2013; 29:867-72. [PMID: 23875965 DOI: 10.3109/09513590.2013.813471] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
We aimed to compare the effects of different types of hormone treatment (HT) on endothelial function by means of brachial artery ultrasonographic examination in postmenopausal women. Sixty-two healthy postmenopausal women were included in this study. Subjects were assigned to one of the five groups receiving 6 months of treatment [estrogen (conjugated estrogen), estrogen (conjugated estrogen) plus progesterone (medroxyprogesterone acetate; MPA), raloxifene, tibolone or control]. Endothelial function was assessed by measurement of flow-mediated dilatation (FMD) and nitrate-dependent dilatation in the brachial artery. At the end of 6 months, FMD values were found to be significantly increased in women with HT use than the control group (p = 0.001). In subgroups, FMD increased significantly in the estrogen [12 ± 7 versus 25 ± 8, p = 0.001] and raloxifene groups [7 ± 5 versus 11 ± 3, p < 0.01] compared to tibolone and estrogen plus progesterone groups. In conclusion, endothelial function is impaired in postmenopausal women. Both estrogen and raloxifene regimens may improve endothelial functions in healthy postmenopausal women. The direct protective effects of these HT on the healthy endothelium may be more remarkable than the favorable effects on lipid profile.
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Affiliation(s)
- Levent Akman
- Ege University Faculty of Medicine, Department of Obstetrics and Gynecology, Bornova 35100, İzmir, Turkey.
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Fructose rich diet-induced high plasminogen activator inhibitor-1 (PAI-1) production in the adult female rat: protective effect of progesterone. Nutrients 2012; 4:1137-50. [PMID: 23016136 PMCID: PMC3448091 DOI: 10.3390/nu4081137] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Revised: 07/20/2012] [Accepted: 08/08/2012] [Indexed: 11/18/2022] Open
Abstract
The effect of progesterone (P4) on fructose rich diet (FRD) intake-induced metabolic, endocrine and parametrial adipose tissue (PMAT) dysfunctions was studied in the adult female rat. Sixty day-old rats were i.m. treated with oil alone (control, CT) or containing P4 (12 mg/kg). Rats ate Purina chow-diet ad libitum throughout the entire experiment and, between 100 and 120 days of age drank ad libitum tap water alone (normal diet; CT-ND and P4-ND) or containing fructose (10% w/v; CT-FRD and P4-FRD). At age 120 days, animals were subjected to a glucose tolerance test or decapitated. Plasma concentrations of various biomarkers and PMAT gene abundance were monitored. P4-ND (vs. CT-ND) rats showed elevated circulating levels of lipids. CT-FRD rats displayed high (vs. CT-ND) plasma concentrations of lipids, leptin, adiponectin and plasminogen activator inhibitor-1 (PAI-1). Lipidemia and adiponectinemia were high (vs. P4-ND) in P4-FRD rats. Although P4 failed to prevent FRD-induced hyperleptinemia, it was fully protective on FRD-enhanced plasma PAI-1 levels. PMAT leptin and adiponectin mRNAs were high in CT-FRD and P4-FRD rats. While FRD enhanced PMAT PAI-1 mRNA abundance in CT rats, this effect was absent in P4 rats. Our study supports that a preceding P4-enriched milieu prevented the enhanced prothrombotic risk induced by FRD-elicited high PAI-1 production.
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Progestogens and venous thromboembolism among postmenopausal women using hormone therapy. Maturitas 2011; 70:354-60. [DOI: 10.1016/j.maturitas.2011.10.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2011] [Accepted: 10/03/2011] [Indexed: 01/09/2023]
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Vassalle C, Cicinelli E, Lello S, Mercuri A, Battaglia D, Maffei S. Effects of menopause and tibolone on different cardiovascular biomarkers in healthy women. Gynecol Endocrinol 2011; 27:163-9. [PMID: 20500110 DOI: 10.3109/09513590.2010.488770] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND AIM The effects of tibolone on cardiovascular risk is not yet fully understood today. We designed this study to assess the effect of the menopausal status and tibolone treatment (2.5 mg/day for 3 months) on different biomarkers of cardiovascular risk in healthy women. METHODS Blood arterial pressure were measured, and blood samples collected for glucose, lipid profile (total cholesterol, high density lipoproteins, HDL, low density lipoproteins, and triglycerides), inflammatory (C-reactive protein, Interleukin-6, IL-6, tumor necrosis factor alpha, TNF alpha) and oxidative stress (hydroperoxides and antioxidant capacity) evaluation in 15 premenopausal (mean age: 30 +/- 4 years) and 15 postmenopausal (mean age: 52 +/- 3, mean time from menopause 1.4 +/- 0.4 years) women before and after tibolone treatment. RESULTS The menopausal status is associated with increased systolic and diastolic pressure (p<0.05), higher IL-6 (p<0.05) and TNF alpha (p<0.01), and lower antioxidants (p<0.01). However, blood pressure (p<0.05), glucose (p<0.05), TNF alpha (p<0.05) and HDL (p<0.05) fell after tibolone, which did not significantly affect levels of the other biochemical parameters. CONCLUSIONS As menopause is associated with increased blood pressure, inflammation and oxidative stress, tibolone restores blood pressure and has beneficial effect on inflammation and glycemia without worsening oxidative stress, although it also reduces HDL levels. Such modifications should be taken into account when tailoring menopausal therapies to specific requirements of each woman.
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Affiliation(s)
- Cristina Vassalle
- Fondazione G. Monasterio CNR-Regione Toscana and Institute of Clinical Physiology, CNR, Pisa, Italy.
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Delgado O, Guerra M, Reyna E, Torres D, Colmenares M, Santos J, Mejía J, Reyna N. Lípidos y lipoproteína (a) en menopáusicas tratadas con tibolona. CLINICA E INVESTIGACION EN GINECOLOGIA Y OBSTETRICIA 2011. [DOI: 10.1016/j.gine.2009.02.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Biglia N, Maffei S, Lello S, Nappi RE. Tibolone in postmenopausal women: a review based on recent randomised controlled clinical trials. Gynecol Endocrinol 2010; 26:804-14. [PMID: 20586550 DOI: 10.3109/09513590.2010.495437] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
AIM To critically discuss the use of tibolone (T), in light of a series of very recent double-blind placebo (PL) controlled trials (LISA, LIFT, OPAL, THEBES, LIBERATE) conducted worldwide in a large number of postmenopausal women (PMW). METHODS The most relevant publications on T therapy in PMW were considered with emphasis on menopausal symptoms, quality of life, sexuality, bone, cardiovascular system (CVS) and oncologic risk. RESULTS T significantly relieves climacteric symptoms and improves mood and sexual well-being (LISA). T is as effective as estrogen-progestin therapy in preventing bone loss and reducing the relative risk of vertebral and non-vertebral fractures (LIFT). By using surrogate endpoints of the individual risks for the CVS, studies show mixed results, but a favourable effect on acute miocardial infarction and thromboembolism has been documented (THEBES, LIFT, OPAL). Although findings about endometrial and colon cancer are reassuring, conclusive data on breast cancer risk with T are not available and an increased risk of recurrence in women with previous breast cancer emerged (LIBERATE). CONCLUSIONS T is effective in treating menopausal syndrome with a good tolerability profile. In spite of some unsolved issues in term of safety, T is still a good treatment option for early PMW.
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Affiliation(s)
- Nicoletta Biglia
- Gynecological Oncology Department, University of Turin, Mauriziano Umberto I Hospital, Turin, Italy
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Sezer Özer K, Erenus M, Yoldemir T. The impact of tibolone and hormone therapy on serum C-reactive protein, tumor necrosis factor-α and hepatocyte growth factor in postmenopausal women. Climacteric 2009; 12:66-71. [DOI: 10.1080/13697130802479580] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Skouby SO, Sidelmann JJ, Nilas L, Gram J, Jespersen J. The effect of continuous combined conjugated equine estrogen plus medroxyprogesterone acetate and tibolone on cardiovascular metabolic risk factors. Climacteric 2009; 11:489-97. [DOI: 10.1080/13697130802455150] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Schindler TH, Campisi R, Dorsey D, Prior JO, Olschewski M, Sayre J, Schelbert HR. Effect of hormone replacement therapy on vasomotor function of the coronary microcirculation in post-menopausal women with medically treated cardiovascular risk factors. Eur Heart J 2009; 30:978-86. [PMID: 19251725 DOI: 10.1093/eurheartj/ehp013] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIMS The aim of this study was to evaluate the effect of hormone replacement therapy (HRT) on coronary vasomotor function in post-menopausal women (PM) with medically treated cardiovascular risk factors (RFs) in a cross-sectional and a longitudinal follow-up (FU) study. METHODS AND RESULTS Myocardial blood flow (MBF) response to cold pressor testing (CPT) and during pharmacologically induced hyperaemia was measured with positron emission tomography in pre-menopausal women (CON), in PM with HRT and without HRT, and repeated in PM after a mean FU of 24 +/- 14 months. When compared with CON at baseline, the endothelium-related change in MBF (DeltaMBF) to CPT progressively declined in PM with HRT and without HRT (0.35 +/- 0.23 vs. 0.24 +/- 0.20 and 0.16 +/- 0.12 mL/g/min; P = 0.171 and P = 0.021). In PM without HRT and in those with HRT at baseline but with discontinuation of HRT during FU, the endothelium-related DeltaMBF to CPT was significantly less at FU than at baseline (0.05 +/- 0.19 vs. 0.16 +/- 0.12 and -0.03 +/- 0.14 vs. 0.25 +/- 0.18 mL/g/min; P = 0.023 and P = 0.001), whereas no significant change was observed in PM with HRT (0.19 +/- 0.22 vs. 0.23 +/- 0.22 mL/g/min; P = 0.453). Impaired hyperaemic MBFs when compared with CON were not significantly altered from those at baseline exam. CONCLUSION Long-term administration of oestrogen may contribute to maintain endothelium-dependent coronary function in PM with medically treated cardiovascular RFs.
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Affiliation(s)
- Thomas H Schindler
- Department of Molecular and Medical Pharmacology, David Geffen School of Medicine at UCLA, University of California at Los Angeles, 10833 Le Conte Ave, 23-120 CHS, Box 173517, Los Angeles, CA 90095-1735, USA
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15
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Estradiol valerate and tibolone: effects upon brain oxidative stress and blood biochemistry during aging in female rats. Biogerontology 2008; 9:285-98. [DOI: 10.1007/s10522-008-9137-7] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2007] [Accepted: 03/10/2008] [Indexed: 10/22/2022]
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Seeger H, Kloosterboer HJ, Studen M, Wallwiener D, Mueck AO. In vitro effects of tibolone and its metabolites on human vascular coronary cells. Maturitas 2007; 58:42-9. [PMID: 17572028 DOI: 10.1016/j.maturitas.2007.04.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 04/03/2007] [Accepted: 04/29/2007] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Tibolone is a tissue selective compound with estrogenic, androgenic and progestogenic properties in classical bioassays. It is used for alleviation of menopausal symptoms and for osteoporosis prophylaxis in postmenopausal women. Only few data are available regarding the effects of tibolone on the cardiovascular system. We investigated therefore the in vitro effects of tibolone and its metabolites on the vasculature under special controlled conditions, using human female coronary endothelial and smooth muscle cells. METHODS The effect on the production of the following markers in endothelial cells from human female coronary arteries was evaluated: nitric oxide synthase, prostacyclin, endothelin, plasminogen-activator-inhibitor-1 (PAI-1), E-Selectin, Intercellular adhesion molecule (ICAM-1), monocyte attracting protein-1 (MCP-1) and the precursor of matrix metalloproteinase-1 (pro-MMP-1). Tibolone, its metabolites, estradiol (E2), E2/norethisterone (NET) and E2/medroxyprogesterone acetate (MPA) were tested at 0.1 microM and 1 microM. The markers were determined by enzyme immunoassays in the cell supernatant. Cell proliferation of smooth muscle cells from female coronary artery was measured by an adenosine triphosphate-assay. RESULTS Tibolone, its 3-hydroxy metabolites, E2/NET, E2/MPA and estradiol alone had significant effects on the synthesis of all markers tested. The magnitude of the tibolone effects, however, was mostly smaller than that of E2/NET and E2/MPA. Concerning smooth muscle cells tibolone and its 3-hydroxy metabolites also elicited an inhibition of the proliferation compared to control values. The strongest effect here was found for E2/NET and E2 alone, whereas E2/MPA had no effect. CONCLUSION The results of this in vitro study conducted with cells of the most important vascular bed with respect to the problem of cardiovascular risk suggest that tibolone can positively influence the vasculature. However, these tibolone effects may depend on intact vascular cells and may vary due to the different atherosclerotic stages of the vessels. Thus, experimental studies are useful to explore mechanisms, but clearly cannot replace clinical studies.
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MESH Headings
- Biomarkers/blood
- Cells, Cultured
- Coronary Vessels/cytology
- Coronary Vessels/drug effects
- E-Selectin/blood
- Endothelins/blood
- Endothelium, Vascular/cytology
- Endothelium, Vascular/drug effects
- Endothelium, Vascular/metabolism
- Enzyme-Linked Immunosorbent Assay
- Epoprostenol/blood
- Estradiol/pharmacology
- Female
- Humans
- Intercellular Adhesion Molecule-1/blood
- Matrix Metalloproteinase 1/blood
- Medroxyprogesterone Acetate/pharmacology
- Muscle, Smooth, Vascular/cytology
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Nitric Oxide Synthase/blood
- Norethindrone/pharmacology
- Norpregnenes/pharmacology
- Plasminogen Activator Inhibitor 1/blood
- Vascular Resistance/drug effects
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Affiliation(s)
- H Seeger
- Department of Endocrinology and Menopause, University's Women Hospital, Calwerstrasse 7, 72 076 Tuebingen, Germany
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Campisi R, Marengo FD. Cardiovascular Effects of Tibolone: A Selective Tissue Estrogenic Activity Regulator. ACTA ACUST UNITED AC 2007; 25:132-45. [PMID: 17614936 DOI: 10.1111/j.1527-3466.2007.00007.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Traditionally, it was accepted that long-term hormone replacement therapy (HRT) has a cardiovascular beneficial effect in postmenopausal women with and without coronary artery disease (CAD). However, randomized trials in postmenopausal women have not shown any benefit in either primary or secondary prevention of cardiovascular events. Therefore, these findings have raised the question of whether traditional HRT (i.e., estrogen and progesterone) has a cardioprotective effect in women at risk for or with established CAD. Concerns about the use of conventional HRT have led to a search for alternatives. Tibolone is a synthetic compound with estrogenic, androgenic, and progestogenic properties that relieves climacteric symptoms and prevents postmenopausal bone loss. Tibolone possesses a tissue-selective mechanism of action that differs from that of estrogen and/or progestogen. Unlike these compounds, tibolone's metabolites play a central role in its mode of action. Tibolone is widely used for HRT. However, its clinical impact on cardiovascular disease is still under study. The current review focuses on the effects of tibolone on the cardiovascular system and discusses clinical investigations with this compound in postmenopausal women.
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Affiliation(s)
- Roxana Campisi
- Fundación Centro Diagnóstico Nuclear and Instituto Argentino de Diagnóstico y Tratamiento S.A., Argentina.
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Demirol A, Guven S, Guvendag Guven ES, Kirazli S, Gurgan T, Ayhan A. Comparison of the effects of tibolone and estrogen therapy on hemostasis in surgical menopause: a randomized, double-blind, placebo-controlled study. Fertil Steril 2007; 87:842-8. [PMID: 17222829 DOI: 10.1016/j.fertnstert.2006.08.090] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2005] [Revised: 08/04/2006] [Accepted: 08/04/2006] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To examine the effects of unopposed estrogen (E) and tibolone therapy on coagulation and natural anticoagulant systems in surgical menopause. DESIGN A randomized, double-blind, placebo-controlled study. SETTING University hospital clinic in Turkey. PATIENT(S) Ninety healthy surgically postmenopausal women. INTERVENTION(S) Ninety surgically postmenopausal women were randomized into three groups: unopposed conjugated ET (0.625 mg/d, group 1), tibolone (2.5 mg/d, group 2), and identical tablets of placebo (group 3). MAIN OUTCOME MEASURE(S) Effects on parameters in the clotting cascade at baseline and after 24 weeks of treatment. RESULT(S) After 6 months, fibrinogen, lipoprotein (a), and factor VIIa were decreased, and activated partial thromboplastin time was increased significantly in the ET group compared with in the placebo group. However, tibolone significantly decreased only the serum levels of factor VIIa and factor IX and prolonged the activated partial thromboplastin time, compared with placebo group. In addition, conjugated ET caused a significantly greater decrease in serum fibrinogen level than did tibolone. CONCLUSION(S) Neither E nor tibolone therapy led to activation of coagulation in the surgically menopausal women. Both preparations changed the overall hemostatic balance to a more fibrinolytic state.
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Affiliation(s)
- Aygul Demirol
- Clinic for Womens' Health, Infertility, and IVF Center, Ankara, Turkey
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Skouby SO, Sidelmann JJ, Nilas L, Jespersen J. A comparative study of the effect of continuous combined conjugated equine estrogen plus medroxyprogesterone acetate and tibolone on blood coagulability. Hum Reprod 2007; 22:1186-91. [PMID: 17204528 DOI: 10.1093/humrep/del498] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
BACKGROUND Hormone therapy (HT) after the menopause is associated with increased risk of venous thromboembolism (VTE). Tibolone has pharmacodynamic properties different from other hormone preparations. We compared the effect of a combined HT and tibolone on the inhibition of haemostasis. METHODS Thirty-eight post-menopausal women were randomly assigned to 1.25 or 2.5 mg per day of tibolone or oral continuous combined conjugated equine estrogen plus medroxyprogesterone acetate (CEE/MPA). Inhibitors of haemostasis were measured at baseline and after 12 months. RESULTS Results from the two groups of women receiving tibolone were not significantly different and, to improve the power of the study, the two groups were merged. Higher concentration of protein S (1.16 versus 1.00 IU ml(-1); P = 0.005) and higher activated protein C resistance ratio (APC-R) (4.2 versus 3.65; P = 0.04) were observed in the tibolone group than in the CEE/MPA group. Both doses of tibolone increased APC-R significantly (P < 0.01). Tissue factor pathway inhibitor (TFPI) was lower in the CEE/MPA group than in the tibolone group (67.8 versus 79.9 ng ml(-1); P = 0.03). CEE/MPA reduced the concentration of antithrombin (P = 0.002), protein S (P < 0.001) and TFPI (P < 0.001). Both preparations reduced the concentration of plasminogen activator inhibitor 1 (P < 0.05). CONCLUSIONS Tibolone induces fewer pharmacological alterations on blood coagulability than CEE/MPA and has a potentially favourable effect on APC-R. This may translate into a corresponding low risk of VTE, as also indicated from the existing clinical data.
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Affiliation(s)
- Sven O Skouby
- Department of Obstetrics and Gynecology, Frederiksberg Hospital, University of Copenhagen, Denmark
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Abstract
Despite biologically plausible mechanisms for cardiac protection and compelling evidence from observational studies suggesting that menopausal hormone therapy confers cardiovascular benefit, results of well-designed and conducted randomized clinical trials in healthy women and in women with established coronary heart disease displayed that menopausal hormone therapy failed to prevent clinical cardiovascular events and rather was associated with harms. Clinical trial of the SERM raloxifene also did not demonstrate a decrease in coronary events. It is unknown whether the earlier initiation of such therapies, i.e., at menopause, would result in favorable outcomes; or whether different hormonal preparations, lower doses, or alternate routes of administration would confer benefit. At present, proved coronary risk reduction strategies are requisite (albeit underutilized) for menopausal women; these include lifestyle and pharmacologic coronary preventive interventions. The baseline characteristics of menopausal women with coronary heart disease who were participants in cardiovascular outcome trials of menopausal hormone therapy or raloxifene were remarkably similar; globally, cardiovascular risk factors were not optimally controlled at entry into these trials, suggesting that more aggressive cardiovascular risk interventions are appropriate to achieve optimal target goals for menopausal women with documented coronary heart disease.
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Affiliation(s)
- Nanette K Wenger
- Emory University School of Medicine, Grady Memorial Hospital, Emory Heart and Vascular Center, Atlanta, Georgia, USA.
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Eilertsen AL, Qvigstad E, Andersen TO, Sandvik L, Sandset PM. Conventional-dose hormone therapy (HT) and tibolone, but not low-dose HT and raloxifene, increase markers of activated coagulation. Maturitas 2006; 55:278-87. [PMID: 16713143 DOI: 10.1016/j.maturitas.2006.04.012] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2006] [Revised: 04/04/2006] [Accepted: 04/11/2006] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Hormone therapy (HT) is associated with a modest, but significantly increased risk for arterial and venous thromboembolism. We have compared the effects of estrogen, tibolone, and raloxifene on relevant markers of coagulation activation and investigated whether there is a dose-response relationship of oral HT. METHODS Randomized, open-label, comparative study of 202 healthy women who were assigned to receive treatment for 12 weeks with either low-dose hormone therapy containing 1 mg 17beta-estradiol + 0.5 mg norethisterone acetate (NETA) (n=50), conventional-dose HT containing 2 mg 17beta-estradiol and 1 mg NETA (n=50), 2.5 mg tibolone (n=51), or 60 mg raloxifene (n=51). RESULTS The groups were comparable with regard to demographic characteristics and laboratory variables at baseline. D-dimer increased markedly in the conventional-dose HT group, but remained unchanged in the low-dose HT group. Tibolone was associated with a medium increase, whereas raloxifene was associated with a decrease in D-dimer levels. Changes in prothrombin fragment 1 + 2 showed a similar pattern for all four groups, whereas no significant differences in changes of thrombin-antithrombin complex were observed. CONCLUSIONS Our data suggest that low-dose HT is associated with less activation of coagulation than conventional-dose HT. This finding may be of clinical importance since randomized clinical trials showing increased risk of thrombosis have utilized conventional-dose HT.
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Affiliation(s)
- A L Eilertsen
- Department of Hematology, Ullevaal University Hospital Trust, Hematological Research Laboratory, NO-0407 Oslo, Norway.
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Du XJ, Fang L, Kiriazis H. Sex dimorphism in cardiac pathophysiology: experimental findings, hormonal mechanisms, and molecular mechanisms. Pharmacol Ther 2006; 111:434-75. [PMID: 16439025 DOI: 10.1016/j.pharmthera.2005.10.016] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2005] [Accepted: 10/25/2005] [Indexed: 11/30/2022]
Abstract
The higher cardiovascular risk in men and post-menopausal women implies a protective action of estrogen. A large number of experimental studies have provided strong support to this concept. However, the recent clinical trials with negative outcomes regarding hormone replacement therapy call for "post hoc" reassessment of existing information, models, and research strategies as well as a summary of recent findings. Sex steroid hormones, in particular estrogen, regulate numerous processes that are related to the development and progression of cardiovascular disease through a variety of signaling pathways. Use of genetically modified models has resulted in interesting information on diverse actions mediated by steroid receptors. By focusing on experimental findings, we have reviewed hormonal, cellular, and signaling mechanisms responsible for sex dimorphism and actions of hormone replacement therapy and addressed current limitations and future directions of experimental research.
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Affiliation(s)
- Xiao-Jun Du
- Experimental Cardiology Laboratory, Baker Heart Research Institute, 75 Commercial Road, Melbourne, Victoria 3004, Australia.
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Gohlke-Bärwolf C, von Schacky C. [Role of hormone-replacement therapy for prevention of coronary artery disease in women]. ZEITSCHRIFT FUR KARDIOLOGIE 2005; 94 Suppl 3:III/74-8. [PMID: 16258796 DOI: 10.1007/s00392-005-1310-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The postmenopausal increase in the incidence of coronary artery disease implied a protective effect of estrogens. Nonrandomized, clinical and experimental studies have supported this notion. In the first randomized study (HERS 1998) no protective effect on prognosis of postmenopausal women with coronary artery disease was demonstrated. Also, in healthy postmenopausal women no beneficial effect of a hormone-replacement therapy on coronary events was shown (WHI-Study 2002, 2004). Therefore, hormone-replacement therapy is not recommended for prophylaxis of cardiovascular disease in healthy women or in women with documented coronary artery disease (Recommendation class I, evidence-level A). The continuation or the start of a hormone- replacement therapy is only justified for therapy of severe menopausal symptoms. Women should be informed that changes in lifestyle including not smoking, a heart healthy diet, and regular exercise are the most important measures to prevent cardiovascular diseases.
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Affiliation(s)
- C Gohlke-Bärwolf
- Klinische Kardiologie I, Herzzentrum Bad Krozingen, Südring 15, 79189 Bad Krozingen, Germany.
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Grohé C. ‘Tib the balance’: the search for the optimal hormone replacement therapyThe opinions expressed in this article are not necessarily those of the Editors of the European Heart Journal or of the European Society of Cardiology. Eur Heart J 2005; 26:1345-6. [PMID: 15964858 DOI: 10.1093/eurheartj/ehi354] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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