You searched for:"Marcelo Luis Steiner"
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Revista Brasileira de Ginecologia e Obstetrícia. 2022;44(1):32-39
To evaluate the improvement in screening accuracy of the Fracture Risk Assessment Tool (FRAX) for the risk of developing osteoporosis among young postmenopausal women by associating with it clinical muscle mass measures.
A sample of postmenopausal women was submitted to calcaneal quantitative ultrasound (QUS), application of the FRAX questionnaire, and screening for the risk of developing sarcopenia at a health fair held in the city of São Bernardo do Campo in 2019. The sample also underwent anthropometric measurements, muscle mass, walking speed and handgrip tests. A major osteoporotic fracture (MOF) risk ≥ 8.5% on the FRAX, a classification of medium risk on the clinical guideline of the National Osteoporosis Guideline Group (NOGG), and a QUS T-score ≤ -1.8 sd were considered risks of having low bone mass, and QUS T-score ≤ -2.5sd, risk of having fractures.
In total, 198 women were evaluated, with a median age of 64±7.7 years, median body mass index (BMI) of 27.3±5.3 kg/m2 and median QUS T-score of -1.3±1.3 sd. The accuracy of the FRAX with a MOF risk ≥ 8.5% to identify women with T-scores ≤ -1.8 sd was poor, with an area under the curve (AUC) of 0.604 (95% confidence interval [95%CI]: 0.509-0.694) for women under 65 years of age, and of 0.642 (95%CI: 0.571-0.709) when age was not considered. Including data on muscle mass in the statistical analysis led to a significant improvement for the group of women under 65 years of age, with an AUC of 0,705 (95%CI: 0.612-0.786). The ability of the high-risk NOGG tool to identify T-scores ≤ -1.8 sd was limited.
Clinical muscle mass measurements increased the accuracy of the FRAX to screen for osteoporosis in women aged under 65 years.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2020;42(7):411-414
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2020;42(1):43-50
The present article aims to evaluate the impact of testosterone treatment on the expansion of visceral, subcutaneous and intramedullary adipose tissue of ovariectomized rats and the visceral and subcutaneous fat expression of peroxisome proliferator-activated receptors (PPARs) gamma.
In total 48 female Wistar rats were castrated and randomly divided into 6 treatment groups: group E2 was submitted to estradiol 5 μg/day; group T, to testosterone 5 μg/day; group E2+ T, to estradiol 5 μg/day + testosterone 5 μg/day; group TT, to testosterone 30 μg/day; group E2+ TT, to estradiol 5 μg/day+ testosterone 30 μg/day; and placebo was administered to group P. After 5 weeks, the rats were euthanized, the inguinal and visceral adipose tissues were harvested, weighted, and had their PPAR gamma expression evaluated by reverse transcription quantitative polymerase chain reaction (RTqPCR). The right femurs were harvested and histologically prepared to performthe number count of the intramedullary adipocytes.
The expansion of visceral fat tissue was much higher in the TT group when compared with other treated groups (p < 0.001). The TT group also showed a higher expansion of inguinal fat (p < 0.01), and groups E2 +T and E2+ TT presented lower growth compared to the P group (p < 0.01). The number of femur intramedullary adipocytes only showed significant differences between groups TT and E2 + TT (p < 0.05). The expression of PPAR gamma showed no differences among the groups.
The use of testosterone in high doses leads to an important expansion in both visceral and inguinal adipose tissues. Association with estradiol exerts an expansion-repressive effect on the visceral and inguinal adipose tissues.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2019;41(12):703-709
To investigate the action of testosterone (T), isolated or associated with estradiol benzoate (EB), on the proliferation markers and apoptosis of breasts of ovariectomized rats.
A total of 48 castrated female Wistar rats were divided into 6 groups, and each of them were submitted to one of the following treatments for 5 weeks: 1) control; 2) EB 50 mcg/day + T 50 mcg/day; 3) T 50mcg/day; 4) EB 50 mcg +T 300 mcg/day; 5) T 300 mcg/day; and 6) EB 50 mcg/day. After the treatment, the mammary tissue was submitted to a histological analysis and immunoexpression evaluation of proliferation markers (proliferating cell nuclear antigen, PCNA) and apoptosis (caspase-3).
There was a statistically significant difference among the groups regarding microcalcifications and secretory activity, with higher prevalence in the groups treated with EB. There was no difference among the groups regarding atrophy, but a higher prevalence of atrophy was found in the groups that received T versus those that received EB +T. There was a difference among the groups regarding the PCNA (p = 0.028), with higher expression in the group submitted to EB +T 300 mcg/day. Regarding caspase-3, there was no difference among the groups; however, in the group submitted to EB +T 300 mcg/day, the expression was higher than in the isolated T group.
Isolated T did not have a proliferative effect on the mammary tissue, contrary to EB. Testosterone in combination with EB may or may not decrease the proliferation, depending on the dose of T.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2019;41(7):449-453
To analyze the effects of estrogen alone or in combination with progestogens and tibolone (TIB) on the expression of the extracellular matrix metalloproteinases 2 and 9 (MMP-2 and MMP-9), of perlecan, and of heparanase (HPSE) of the vascular walls of the carotid arteries.
A total of 30 250-day-old ovariectomized Wistar rats were orally treated for 5 weeks with: a) 1 mg/kg of estradiol benzoate (EB); b) EB + 0.2 mg/kg of medroxyprogesterone acetate (MPA); c) EB + 0.2mg/kg of norethisterone acetate (NETA); d) EB + 2 mg/kg of dydrogesterone (DI); e) 1 mg/kg of TIB; f) placebo (CTR). Following treatment, the expression of mRNA for MMP-2, MMP-9, and HPSE was analyzed by realtime polymerase chain-reaction (PCR), and the expression of MMP-2, of MMP-9, of tissue inhibitor of metalloproteinase 2 (TIMP-2), and of perlecan was quantified by immunohistochemistry in the carotid arteries.
The groups showed significant differences on mRNA HPSE expression (p = 0.048), which was higher in the EB, EB + MPA, and TIB groups. There was no statistically significant difference in mRNA MMP-2 or MMP-9 expression. The immunohistochemical expression of MMP-2, of TIMP-2, of MMP-9, of HPSE, and of perlecan showed no differences between groups.
Estradiol alone or associated with MPA and TIB treatment can increase mRNA HSPE expression of the walls of the carotid arteries in ovariectomized rats.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2018;40(11):693-698
The aim of the present study is to identify the association between personality traits of postmenopausal women and the occurrence of sexual dysfunction.
A total of 43 postmenopausal women were evaluated according to their self-perception of the quality of their sexual life. They answered the following questionnaires: Sociodemographic Profile Questionnaire, Female Sexual Function Index (FSFI), Beck Depression Inventory (BDI) and Factorial Personality Inventory (FPI-II).
Women with poorer sexual self-perception showed low affective need (p< 0.01) and low need for organization (p< 0.01). Based on the need for control and opposition, there was no difference between the groups. Groups separated by the scores obtained on the FSFI showed no significant differences.
Postmenopausal women with lower schooling and personality characteristics that demonstrate low affective and organizational needs are more likely to present sexual dysfunction.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2017;39(7):337-343
Vitamin D deficiency is associated with various diseases. Prevalent in Brazil, it can result from inadequate lifestyle habits.
To demonstrate that postmenopausal women with vitamin D deficiency have worse quality of health, expressed as worse quality of life, lower levels of physical activity, and worse nutritional profile.
Postmenopausal women answered questionnaires about physical activity and quality of life, provided a 24-hour food record, and had serum vitamin D levels measured.
Among the more active women, those who perform a daily average of one hour of physical activity had vitamin D levels above 20 ng/mL (76.9%), and those, which expose themselves to sunlight, had vitamin D levels above 30 ng/mL (34.6%). Meanwhile the percentages for the women who are less physically active and less exposed to sunlight were 42.2% and 8.9% respectively. Being more active and more exposed to sunlight resulted in a lower fat percentage. Serum vitamin D levels were not correlated with quality of life.
Walking and gardening increased serum vitamin D levels and decreased the percentage of body fat. The limitations of the study prevented the impact of 25hidroxyvitamin D on the quality of life and nutritional aspects of the women from being evaluated.
Summary
Revista Brasileira de Ginecologia e Obstetrícia. 2016;38(12):600-608
Female sexual dysfunction is a complex and common condition that affects women, and the relationship between sexual function and dyslipidemia is poorly studied. This study aims to assess this relationship in the reproductive life women in the menacme who use combined oral contraceptives (COCs) .
A total of 49 healthy women who were sexually active received COC pills that contained ethinylestradiol 30 mcg (EE30) plus levonorgestrel 150 mcg (LNG150). The women were divided into two groups according to their lipid profiles. Dyslipidemia was defined as a high-density lipoprotein (HDL) level < 50 mg/dL or a low-density lipoprotein (LDL) level > 130 mg/dL. Sexual function was assessed using the Female Sexual Function Index (FSFI) Questionnaire. Lipid and lipoprotein parameters were obtained at baseline and after the sixth cycle.
After six cycles of the COCs, the total cholesterol and LDL cholesterol levels in the women with a LDL level > 130 mg/dL decreased by 14.7% and 22.1% respectively. In the women with a HDL level < 50 mg/dL at baseline, the HDL level increased by 15.5% at the end of the study. The arousal and orgasm domains and the FSFI total scores significantly increased in women with and without dyslipidemia. The desire and satisfaction domains increased only in the group without dyslipidemia at the end of the treatment period.
The EE30/LNG150 formulation increased the sexual function and it was only positively correlated with the HDL cholesterol level. These data indicated a low correlation between sexual function and the changes in the lipid and lipoprotein metabolism.