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- Darj, Elisabeth, et al.
(författare)
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Ultrasonographic blood flow measurement in the carotid arteries in postmenopausal women
- 1999
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Ingår i: Gynecologic and Obstetric Investigation. - : S. Karger AG. - 0378-7346 .- 1423-002X. ; 47:1, s. 20-25
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Tidskriftsartikel (refereegranskat)abstract
- OBJECTIVES: The aim of the present study was to evaluate blood flow in postmenopausal women on hormone replacement therapy (HRT) compared to controls. Blood flow was ultrasonographically measured in the great arteries of the neck instead of in the vessels of the internal genital organs. METHODS: Fifty healthy women with climacteric complaints, at least 6 months postmenopausal, participated in the study. They were randomly divided into two groups. One group received 2 mg estradiol (E2) for 12 days, continued with 2 mg E2 and 1 mg norethisterone acetate for 10 days, followed by 1 mg E2 for 6 days, cyclically during 6 months. The other group received placebo tablets the first 3 months and the same HRT as the first group for the last 3 months. Blood flow was measured ultrasonographically by color flow pulsed Doppler in the common (CCA), internal (ICA) and external (ECA) carotid arteries, before the start of the study, after 3 and 6 months of therapy. RESULTS: CCA and ICA, both low resistance vessels, and ECA, a high resistance vessel, and their waveforms were identified. Pulsatility index did not decrease statistically significant (p > 0.05) in any of the great vessels during 6 months of HRT in this study. There were no differences in blood flow between the HRT-treated group compared to control group during 3 months of therapy, except for the right ECA (p = 0.04). CONCLUSION: The difference in blood flow and wave-forms of the major arteries of the neck were clearly shown, but HRT did not have any important impact on the blood flow in this study. No difference was shown concerning blood flow between the two groups of postmenopausal women, on active therapy or placebo.
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| 2. |
- Hallberg, Gunilla
(författare)
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Effects of Endogenous and Exogenous Hormones on the Female Breast : With Special Reference to the Expression of Proteoglycans
- 2011
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- This thesis aims to study the effects of endogenous and exogenous hormones and mammographic breast density (BD) on cellular markers in non-cancerous female breast tissue. Women on the waiting list for breast reduction plastic surgery were recruited (n = 79), and randomized to 2 months of hormone therapy or no therapy before surgery. The women had a mammogram and a needle biopsy 2 months before surgery and tissue samples were obtained at the operation. In premenopausal women, estrogen receptor (ER)α levels were associated with age (p = 0.0002), were similar in the follicular and luteal phases of the menstrual cycle and were higher in parous than in nulliparous women (p = 0.009). Current smokers had lower PR levels than non-smokers (p = 0.019). Women on oral contraception had lower ERα (p = 0.048) and PR (p = 0.007) levels than women in the follicular phase. The ERα levels did not differ significantly between postmenopausal estrogen and estrogen-progestogen users, but PR levels were lower among estrogen-progestogen users (p = 0.03). We found lower expression of the genes for decorin and syndecans 1 and 4 in the luteal phase than in the follicular phase, among parous women. Protein levels of the androgen receptor, syndecan-4 and decorin was lower in premenopausal women who were using oral contraceptives (OC) than in those in the follicular phase (p = 0.002 - 0.02), whereas no significant differences between OC use and the luteal phase were found. In premenopausal women, BD was negatively associated with age and body mass index but was similar for the menstrual phases. Breast density was associated with genetic expression of the androgen receptor and remained significant after adjustment for age (rs = 0.56; p = 0.04). After adjustement for age, breast density was also marginally associated with expression of the caspase 3 gene (0.55; 0.053). However, protein levels of caspase 3 was negatively associated (-0.61; 0.03).
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| 3. |
- Hallberg, Gunilla, et al.
(författare)
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Effects of pre-and postmenopausal use of exogenous hormones on receptor content in normal human breast tissue: A randomized study
- 2008
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Ingår i: Gynecological Endocrinology. - : Informa UK Limited. - 0951-3590 .- 1473-0766. ; 24:8, s. 475-480
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Tidskriftsartikel (refereegranskat)abstract
- Objective. To examine the effects of exposure to endogenous and exogenous hormones on estrogen receptor- (ER) and progesterone receptor (PR) levels in normal human breast tissue. Methods. In a randomized study of women scheduled for mammary reduction plasty (n = 81), ER and PR content in breast parenchyma was analyzed in premenopausal (n = 49) and postmenopausal (n = 16) women. Premenopausal women were randomized to surgery in the follicular or luteal phase of the menstrual cycle or after oral contraceptive treatment for 2 months. Postmenopausal women were randomized to sequential or estrogen-only therapy for 2 months prior to surgery. Results. ER content was higher in parous than in nulliparous (p = 0.009) premenopausal women and displayed a positive association with age (rs = 0.51, p = 0.0002). Compared with premenopausal women in the follicular phase, postmenopausal women had higher ER content (p = 0.040) whereas premenopausal women on oral contraception had lower ER (p = 0.048) and PR (p = 0.007) content. Smokers had lower PR content than non-smokers (p = 0.02). Conclusion. In the present study ER content was higher in parous than in non-parous women and associated with premenopausal age. Short-term oral contraceptives yielded lower ER and PR contents. Postmenopausal estrogen/progestogen combined therapy yielded lower PR content than estrogen-only therapy.
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| 4. |
- Naessen, Tord, et al.
(författare)
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Early postmenopausal hormone therapy improves postural balance
- 2007
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Ingår i: Menopause. - : Ovid Technologies (Wolters Kluwer Health). - 1072-3714 .- 1530-0374. ; 14:1, s. 14-19
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Tidskriftsartikel (refereegranskat)abstract
- Objective: Postmenopausal hormone therapy (HT) results in more substantial reductions in the risk of hip fracture when initiated sooner rather than later after menopause. We studied the effects of postmenopausal HT on the postural balance of postmenopausal women, with further assessment according to the time since they achieved menopause. Design: One hundred women with a mean age of 52.5 years (91 evaluable) were randomly and blindly assigned to either a sequential estradiol-norethisterone acetate regimen or placebo for 3 months, after which all participants received open HT for a further 3 months. Postural balance was assessed as sway velocity using a force platform. Results: After 3 months of HT, sway velocity had improved (decreased) from baseline by 7.0% (P = 0.007 vs baseline and P = 0.038 vs placebo). Continued HT for 6 months further improved sway velocity by 12% from baseline (P < 0.0001) to reach values similar to those historically found in younger women or in postmenopausal women after long-term HT. Closer proximity to menopause and more pronounced increases in serum estradiol values were associated with stronger improvements in sway velocity (P = 0.018 for interaction). HT also improved dizziness (P = 0.016 vs baseline and 0.022 vs placebo). (Nonparametric statistics are used throughout, except for analyses of interaction and dizziness.) Conclusions: Initiation of HT soon after menopause rapidly improved postural balance to levels normally seen in young women. We suggest that improved postural balance can contribute to the protection against fractures associated with HT and explain the more substantial reduction in hip fracture risk after HT initiated sooner, compared with later, after menopause. Further study is required to confirm these results.
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