Effects of Hormone Replacement Therapy on Cardiovascular Risk and Body Composition Parameters

NCT ID: NCT04453332

Last Updated: 2020-07-01

Basic Information

• Recruitment Status: UNKNOWN
• Clinical Phase: NA
• Total Enrollment: 60 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2015-10-09
• Study Completion Date: 2021-12-31

Brief Summary

Menopause is defined as the last episode of menstrual bleeding, resulting from the interruption of ovarian function by follicular depletion. It is characterized by the presence of amenorrhea associated with increased levels of FSH and low levels of estradiol. The decline in estrogenic levels is associated with several organic changes, from vasomotor symptoms to impaired bone mass and urogenital atrophy. Although for some patients menopause is asymptomatic or oligosymptomatic, many women experience intense symptoms, which profoundly affect quality of life.

Proper assessment and treatment of postmenopausal women can significantly improve climacteric symptoms. Target tissue, hormone therapy regimen and variations between patients will influence the effects of treatment. Regarding estrogen, the main factors that influence the therapeutic response are the type of hormone used, the dose and the route of administration. The skin metabolizes only a small part of estradiol. Thus, the transdermal route reaches adequate therapeutic levels from a lower dose of estrogen.

The present study aims to evaluate and compare the effects of low dose of oral estradiol associated with oral progesterone and transdermal estradiol associated with vaginal progesterone on variables related to inflammation, coagulation and body composition parameters.

Detailed Description

Hormone therapy (HT) was available since 1942 in tablets containing conjugated equine estrogens. Since the 1970s, it has been recommended to add progestogens to the treatment of women with a uterus to prevent endometrial hyperplasia. HT has been shown to be very effective in climacteric syndrome, relieving 90% of hot flushes that affect women in the menopausal transition.

Target tissue, HT regimen and variations between patients will influence the effects of treatment. Regarding estrogen, the main factors that influence the therapeutic response are the type of hormone used, the dose and the route of administration. The most physiological type of estrogen is 17β estradiol, available in the form of gel and adhesive. The skin metabolizes only a small part of estradiol. Thus, the transdermal route reaches adequate therapeutic levels from a lower dose of estrogen. Also, the transdermal route prevents the first hepatic passage, resulting in more stable levels of estradiol in the circulation, without supraphysiological liver concentrations. The bioavailability of estrogen after undergoing metabolism in the liver is approximately 2 to 10% of the total administered. This hepatic passage can result in greater variability in hormone levels, as well as activation of prothrombotic and inflammatory factors. In addition, hepatic metabolism can change the therapeutic effects of estrogen and other pharmacological agents.

The present study aims to evaluate and compare the effects of low dose of oral estradiol associated with oral progesterone and transdermal estradiol associated with vaginal progesterone on variables related to inflammation, coagulation and body composition parameters. This is a prospective randomized controlled study, and the study population includes postmenopausal patients with climacteric symptoms, who have not been using hormone therapy for at least three months. Patients will receive three months of oral hormonal treatment (estradiol 1mg and micronized natural progesterone 200mg 14 days a month) and three months of non-oral hormonal treatment (percutaneous estradiol gel 1.5mg and micronized progesterone 200mg vaginal 14 days a month).

Patients with climacteric symptoms who meet the inclusion and the exclusion criteria will be included in the study. The entire sample will receive both hormonal therapies sequentially and the patients will be divided between the groups (oral therapy and non-oral therapy) to start the study by random allocation. There will be no period of suspension between treatments, that is, at the end of the first three months of the study, the group initially treated with oral therapy starts receiving non-oral treatment for another three months, and the group initially treated with non-oral therapy starts to receive oral therapy also for another three months.

This project has already been approved by the Research Ethics Committee of the Hospital de Clínicas de Porto Alegre. Post-informed written consent will be obtained from all patients, in accordance with health research standards.

The results will be presented as means and standard deviation or medians and interquartile range. Analysis of variance for latin square will be used to evaluate carryover effect. Two-way ANOVA for repeated samples will be used to compare baseline conditions and the two treatments. Bonferroni's adjustment will be used for multiple comparisons. Bivariate correlations between continuous numerical variables will be examined using Pearson or Spearman correlation coefficients, according to the Gaussian or non-Gaussian nature of the variable, respectively. Statistical analysis will be performed using Statistical Package for Social Sciences (SPSS, Chicago, IL, USA), with a value of p <0.05 being considered significant.

Conditions

Menopause; Hormone Replacement Therapy

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

Oral hormone therapy

Estradiol 1mg and micronized natural progesterone 200mg 14 days a month (oral)

Group Type: ACTIVE_COMPARATOR

Oral hormone therapy (estradiol and micronized natural progesterone)

Intervention Type: DRUG

Oral hormone therapy - estradiol 1mg every day and micronized natural progesterone 200mg only 14 days a month

Non-oral hormone therapy

Percutaneous estradiol gel 1.5mg and micronized progesterone 200mg vaginal 14 days a month (non-oral)

Group Type: ACTIVE_COMPARATOR

Non-oral hormone therapy (estradiol and micronized natural progesterone)

Intervention Type: DRUG

Percutaneous estradiol gel 1.5mg every day and micronized progesterone 200mg vaginal only 14 days a month

Interventions

Oral hormone therapy (estradiol and micronized natural progesterone)

Oral hormone therapy - estradiol 1mg every day and micronized natural progesterone 200mg only 14 days a month

Intervention Type: DRUG

Non-oral hormone therapy (estradiol and micronized natural progesterone)

Percutaneous estradiol gel 1.5mg every day and micronized progesterone 200mg vaginal only 14 days a month

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Six months or more of amenorrhea and FSH levels> or = at 35 mIU / ml;
• Menopause for a maximum of three years;
• Mammography and cytology of recent cervix (from the last 12 months);
• Signature of the Informed Consent Form.

Exclusion Criteria

• Menopause age below 40 years;
• Use of hormonal therapy in the three months preceding the study;
• Uncontrolled diabetes mellitus;
• Endometrial thickening (endometrial thickness greater than 0.5 cm);
• Neoplasm of breast, colon or endometrium;
• History of thromboembolism or established cardiovascular disease;
• Previous hysterectomy;
• Active smoking;
• Use of medication to treat osteoporosis in the last 12 months: bisphosphonates, denosumab, teriparatide, SERMs (selective estrogen receptor agonist).

• Minimum Eligible Age: 40 Years
• Maximum Eligible Age: 58 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: Yes

Sponsors

Hospital de Clinicas de Porto Alegre

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Poli Mara Spritzer, PhD

Role: PRINCIPAL_INVESTIGATOR

Federal University of Rio Grande do Sul, Porto Alegre, Brazil

Locations

Hospital de Clínicas de Porto Alegre

Porto Alegre, Rio Grande do Sul, Brazil

Site Status: RECRUITING

Countries

Brazil

Central Contacts

Tayane M Fighera, PhD

Role: CONTACT

tfighera@hcpa.edu.br

+55 51 998004004

References

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Reference Type: BACKGROUND

PMID: 21467283 (View on PubMed)

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Reference Type: BACKGROUND

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Reference Type: BACKGROUND

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Reference Type: BACKGROUND

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Lara S, Casanova G, Spritzer PM. Influence of habitual physical activity on body composition, fat distribution and metabolic variables in early postmenopausal women receiving hormonal therapy. Eur J Obstet Gynecol Reprod Biol. 2010 May;150(1):52-6. doi: 10.1016/j.ejogrb.2010.02.007. Epub 2010 Feb 26.

Reference Type: BACKGROUND

PMID: 20189290 (View on PubMed)

Casanova G, Bossardi Ramos R, Ziegelmann P, Spritzer PM. Effects of low-dose versus placebo or conventional-dose postmenopausal hormone therapy on variables related to cardiovascular risk: a systematic review and meta-analyses of randomized clinical trials. J Clin Endocrinol Metab. 2015 Mar;100(3):1028-37. doi: 10.1210/jc.2014-3301. Epub 2014 Dec 16.

Reference Type: BACKGROUND

PMID: 25514104 (View on PubMed)

Goodman MP. Are all estrogens created equal? A review of oral vs. transdermal therapy. J Womens Health (Larchmt). 2012 Feb;21(2):161-9. doi: 10.1089/jwh.2011.2839. Epub 2011 Oct 19.

Reference Type: BACKGROUND

PMID: 22011208 (View on PubMed)

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Reference Type: BACKGROUND

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Other Identifiers

2015-0363

Identifier Type: -

Identifier Source: org_study_id