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1.
Reprod Sci ; 31(6): 1601-1609, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38393627

ABSTRACT

Polycystic ovary syndrome (PCOS) is a multifactorial disorder and obesity occurs in 38% to 88% of these women. Although hyperandrogenism may contribute to telomere lengthening, increased body mass index (BMI) is associated with telomere erosion. We sought to compare leukocyte telomere length (LTL) in PCOS women with normal, overweight, and obese BMI. We evaluated the relationship between LTL and clinical variables of PCOS and inflammatory biomarkers independent of BMI. A total of 348 women (243 PCOS and 105 non-PCOS) were evaluated for anthropometric measures, total testosterone, androstenedione, estradiol (E2), follicle-stimulating hormone (FSH), luteinizing hormone (LH), sex hormone-binding globulin (SHBG), free androgen index (FAI), fasting insulin and glycemia, lipid profile, homocysteine, C-reactive protein (CRP) and homeostatic model of insulin resistance (HOMA-IR). LTL was measured by qPCR. The PCOS group presented higher weight, waist circumference, BMI, testosterone, LH, fasting insulin, FAI, and HOMA-IR, and lower E2, SHBG, and fasting glycemia measures compared with the non-PCOS. When stratified by BMI, LTL was increased in all subgroups in PCOS compared to non-PCOS. However, in the PCOS group, LTL was lower in overweight (P = 0.0187) and obese (P = 0.0018) compared to normal-weight women. The generalized linear model showed that BMI, androstenedione, homocysteine, and CRP were associated with telomere biology. Women with PCOS had longer LTL, however, overweight or obesity progressively contributes to telomere shortening and may affect reproductive outcomes of PCOS, while androstenedione may increase LTL.


Subject(s)
Body Mass Index , Obesity , Polycystic Ovary Syndrome , Telomere Shortening , Humans , Polycystic Ovary Syndrome/genetics , Polycystic Ovary Syndrome/blood , Polycystic Ovary Syndrome/metabolism , Female , Obesity/genetics , Obesity/blood , Adult , Young Adult , Insulin Resistance , Telomere/metabolism , Leukocytes/metabolism , Biomarkers/blood
2.
Epigenetics ; 19(1): 2305082, 2024 Dec.
Article in English | MEDLINE | ID: mdl-38245873

ABSTRACT

Physical activity is a first-line treatment for polycystic ovary syndrome (PCOS). Resistance or aerobic exercise improves metabolic complications, reproductive outcomes, and quality of life in PCOS. DNA methylation reprogramming during exercise may be the major modifier behind these changes. We sought to evaluate genome-wide DNA methylation changes after supervised resistance and aerobic exercise in women with PCOS. Exercises were performed in 56 women with PCOS (resistance, n = 30; aerobic, n = 26), for 16 weeks (wks), three times per week, in 50-minute to one-hour sessions. Anthropometric indices and hormonal and metabolic parameters were measured before and after training. Genome-wide leukocyte DNA methylation was analysed by Infinium Human MethylationEPIC 850K BeadChip microarrays (Illumina). Both resistance and aerobic exercise improved anthropometric indices, metabolic dysfunction, and hyperandrogenism in PCOS after the training programme, but no differences were observed between the two exercises. Resistance and aerobic exercise increased genome-wide DNA methylation, although resistance changed every category in the CpG island context (islands, shores, shelve, and open sea), whereas aerobic exercise altered CpG shores and the open sea. Using a stringent FDR (>40), 6 significantly differentially methylated regions (DMRs) were observed in the resistance exercise cohort and 14 DRMs in the aerobic cohort, all of which were hypermethylated. The increase in genome-wide DNA methylation may be related to the metabolic and hormonal changes observed in PCOS after resistance and aerobic exercise. Since the mammalian genome is hypermethylated globally to prevent genomic instability and ageing, resistance and aerobic exercise may promote health and longevity through environmentally induced epigenetic changes.


Subject(s)
DNA Methylation , Polycystic Ovary Syndrome , Animals , Female , Humans , Polycystic Ovary Syndrome/genetics , Polycystic Ovary Syndrome/therapy , Health Promotion , Quality of Life , DNA , Mammals
3.
F S Sci ; 5(1): 2-15, 2024 Feb.
Article in English | MEDLINE | ID: mdl-38070681

ABSTRACT

OBJECTIVE: To determine whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection affects male reproductive health, considering the many potential factors that contribute to declines in male fertility on a semiglobal scale. DESIGN: In total, 64 human semen samples-32 treatment and 32 control-were laboratory processed and bioinformatically analyzed to assess differences in DNA methylation patterns. Implementing multiple bioinformatic tools, the analyses conducted will elicit between-group differences with respect to epigenetic age, epigenetic instability, semiglobal, and regional methylation, in addition to methylation patterns as a function of time since infection. SETTING: University hospital. PATIENTS: The study cohort of 64 individuals was drawn from a larger population of 94 volunteer participants recruited at the Human Reproduction Center at the Clinical Hospital of the Ribeirao Preto Medical School-University of São Paulo between June 2021 and January 2022 as well as in accordance with the ethical guidelines established by the Declaration of Helsinki. INTERVENTION: Exposure to SARS-CoV-2. MAIN OUTCOME MEASURE(S): Effects on male reproductive health were reported as differences in DNA methylation measured using an array. Mean ß values at key regulatory loci for human spermatocytes were analyzed and compared between groups. Further analysis of ß values using epigenetic age, instability, semiglobal, and regional methylation tools provided an analysis with substantial breadth and depth. RESULTS: In all analyses, there were no differences between groups. Considering these results, it can be inferred that infection with SARS-CoV-2 does not alter the epigenome of human spermatocytes in significant and/or persistent ways. Tangentially, these data also suggest that human male reproductive health is minimally altered by the virus, or that it is altered in a way that is independent of epigenetic programming. CONCLUSION: Infection with SARS-CoV-2 has been reportedly associated with alterations in male fertility. This study asserts that such alterations do not have an epigenetic basis but are likely a result of concomitant symptomatology, i.e., fever and inflammation. Across the multiple bioinformatic analyses conducted, the results of this test did not detect any differences in DNA methylation patterns between coronavirus disease 2019 and noncoronavirus disease semen donor groups.


Subject(s)
COVID-19 , Humans , Male , COVID-19/genetics , COVID-19/metabolism , Semen , SARS-CoV-2/genetics , Spermatozoa/metabolism , DNA Methylation/genetics
4.
Arch Endocrinol Metab ; 67(5): e000627, 2023 May 25.
Article in English | MEDLINE | ID: mdl-37249458

ABSTRACT

Objective: This study aimed to determine the differences in body fat distribution and central obesity indicators using dual-energy X-ray absorptiometry (DXA), adiposity indices, and anthropometric indices between women with and without polycystic ovary syndrome (PCOS). Materials and methods: Clinical and laboratory examination history, including transvaginal ultrasound, fasting blood samples, anthropometric measurements, and DXA scans were conducted in 179 women with PCOS (PCOS group) and 100 without PCOS (non-PCOS group). The volunteers were grouped by body mass index (BMI): normal (18-24.9 kg/m2), overweight (25-29.9 kg/m2), or obese (>30 kg/m2). The visceral adiposity index (VAI) and lipid accumulation product (LAP) were calculated, regions of interest (ROIs) were determined, and the fat mass index (FMI) was calculated using DXA. Results: VAI, LAP, ROIs, FMI, and adiposity indices by DXA were higher in women with PCOS and normal BMI. In both PCOS and non-PCOS groups, the ROIs progressively increased from normal BMI to overweight and obese, and from overweight to obese. Obese women with PCOS showed high trunk fat mass. However, obesity was not able to modify these trunk/periphery fat ratios in PCOS from overweight to higher BMI. These variables were associated with the incidence of PCOS. Conclusion: In women with PCOS and normal BMI, both DXA and the adiposity indices, VAI and LAP, are more sensitive methods to evaluate total body fat and fat accumulation in the central abdominal region. It was also observed that as BMI increased, the differences in measurements between women with and without PCOS decreased.


Subject(s)
Insulin Resistance , Polycystic Ovary Syndrome , Female , Humans , Adiposity , Body Mass Index , Absorptiometry, Photon , Overweight , Obesity/complications , Obesity, Abdominal/diagnostic imaging , Obesity, Abdominal/complications
5.
Am J Lifestyle Med ; 17(1): 140-151, 2023.
Article in English | MEDLINE | ID: mdl-36636404

ABSTRACT

The purpose of this study to assess the effects of different protocols of physical exercise on the domains of the quality of life (QoL), sexual function, anxiety, and depression scores in women with polycystic ovary syndrome (PCOS). Data of 112 women with PCOS were extracted from 2 trials with different protocols of physical exercise: continuous aerobic training (ContinuousAT, n = 23), intermittent aerobic training (IntermittentAT, n = 22), and progressive resistance training (ResistanceT, n = 43) alongside a control group (CG, n = 24). Volunteers who completed self-report questionnaires-Female Sexual Function Index (FSFI), the Hospital Anxiety and Depression Scale (HADS), and the MOS 36-Item Short-Form Health Survey (SF-36) for QoL-preprotocol and postprotocol of physical exercise were included. Within groups, from baseline to week 16, all ContinuousAT, IntermittentAT, and ResistanceT protocols promoted improvements in multiple FSFI domains and HADS scores. However, ResistanceT did not improve the QoL aspects. Between groups, from other physical training protocols, the IntermittentAT was most effective for QoL and FSFI domains as well as HADS scores. It is concluded that all interventions were effective and improved indicators of sexual function, anxiety, and depression. When comparing protocols, interval training with high-intensity stimuli and active recovery was more effective.

6.
Front Endocrinol (Lausanne) ; 13: 1024844, 2022.
Article in English | MEDLINE | ID: mdl-36568110

ABSTRACT

Background: Moderate-intensity continuous training (MICT) is strongly recommended for polycystic ovarian syndrome (PCOS) treatment. However, recent studies have suggested that high-intensity interval training (HIIT) would promote great benefits for cardiac autonomic control. Therefore, we investigated whether the benefits of HIIT related to cardiovascular autonomic control were greater than those of MICT in women with PCOS. Methods: Women with PCOS were randomly allocated through a blind draw into three groups: control, MICT, and HIIT. The control group did not undergo exercise, whereas those in the MICT and HIIT groups underwent 16 weeks of aerobic physical training. All groups were evaluated before and after the 16 weeks of intervention in the following aspects: quantification of serum lipids, testosterone, fasting insulin and blood glucose; physical fitness through cardiopulmonary testing; analysis of heart rate variability (HRV) by linear (time domain and frequency domain) and non-linear (symbolic analysis) methods, analysis of blood pressure variability (BPV) and spontaneous baroreflex sensitivity (BRS). Results: The final analysis, each group comprised 25 individuals. All groups had similar baseline parameters. After 16 weeks, intragroup comparison showed that the MICT and HIIT groups had a reduction in baseline heart rate (P < 0.001; P < 0.001, respectively) and testosterone levels P < 0.037; P < 0.012, respectively) associated with an increase in VO2peak (MICT, P < 0.001; HIIT, P < 0.001). The MICT (P < 0.36) and HIIT (P < 0.17) groups also showed an increase in cardiac vagal modulation, however only observed in the non-linear analysis. The intergroup comparison showed no differences between the MICT and HIIT groups in any of the hormonal, metabolic and autonomic parameters evaluated, including testosterone, peak oxygen uptake (VO2peak), HRV, BPV and BRS. Conclusion: HIIT and MICT showed similar results for the different parameters evaluated. This suggests that both training protocols can be recommended for the treatment of PCOS. Brazilian Clinical Trials Registry (RBR-78qtwy).


Subject(s)
High-Intensity Interval Training , Polycystic Ovary Syndrome , Humans , Female , Polycystic Ovary Syndrome/therapy , Heart , Exercise/physiology , Testosterone
7.
J Assist Reprod Genet ; 39(8): 1873-1886, 2022 Aug.
Article in English | MEDLINE | ID: mdl-35689735

ABSTRACT

PURPOSE: To evaluate the genetic variants related to polycystic ovary syndrome (PCOS) and its metabolic complications in girls born small for gestational age (SGA). DESIGN: Retrospective birth cohort study. MATERIALS AND METHODS: We evaluated 66 women of reproductive age born at term (37-42 weeks of gestational age) according to the birth weight in relation to gestational age: 26 SGA and 40 AGA (Adequate for gestational age). Anthropometric and biochemical characteristics were measured, as well as the PCOS prevalence. We analyzed 48 single nucleotide polymorphisms (SNPs) previously associated with PCOS and its comorbidities using TaqMan Low-Density Array (TLDA). miRNet and STRING databases were used to predict target and disease networks. RESULTS: Anthropometric and biochemical characteristics did not differ between the SGA and AGA groups, as well as insulin resistance and PCOS prevalence. Two SNPs were not in Hardy-Weinberg equilibrium, the rs2910164 (MIR146A C > G) and rs182052 (ADIPOQ G > A). The rs2910164 minor allele frequency (MAF) was increased in SGA (OR, 2.77; 95%; CI, 1.22-6.29), while the rs182052 was increased AGA (OR, 0.34; 95%; CI, 0.13 - 0.88). The alleles related to reduced miRNA-146a (C) and ADIPOQ (A) activity showed increased frequency in SGA. The mature miR-146a targets 319 genes, been the CXCR4, TMEM167A and IF144L common targets and contributes to PCOS. The ADIPOQ main protein interactions were ERP44, PPARGCIA and CDH13. CONCLUSIONS: The miR-146a (rs2910164) and ADIPOQ (rs182052) allelic variants are related to birth weight in SGA and may predict health-related outcomes, such as PCOS and obesity risk.


Subject(s)
MicroRNAs , Polycystic Ovary Syndrome , Adiponectin/genetics , Adult , Birth Weight/genetics , Cohort Studies , Female , Gestational Age , Humans , Infant , Infant, Newborn , Infant, Small for Gestational Age , MicroRNAs/genetics , Polycystic Ovary Syndrome/epidemiology , Polycystic Ovary Syndrome/genetics , Retrospective Studies
8.
Transl Androl Urol ; 10(1): 397-407, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33532327

ABSTRACT

BACKGROUND: Conventional cryopreservation methods induce chemical and mechanical damage to the sperm membranes. The cryoprotectant potential of phospholipids of vegetal origin as soybean lecithin has been investigated as a substitute for egg yolk in diluents used for the cryopreservation of human spermatozoa. Therefore, the objective of this study was comparing the efficacy of a synthetic cryoprotectant supplemented with L-α-phosphatidylcholine (PC) and L-acetyl-carnitine (ANTIOX-PC) and the standard egg-based TEST-yolk buffer (TYB) in preserving sperm motility and chromatin quality in cryopreserved semen samples. METHODS: Prospective experimental study in which semen samples from 63 men with normal sperm motility and 58 men with low sperm motility were included and analyzed both before and after cryopreservation using ANTIOX-PC or TYB freezing media. Sperm quality was evaluated by routine semen analysis and DNA fragmentation index using the Terminal deoxynucleotidyl transferase dUTP nick end labeling assay. RESULTS: Differences in the post-thaw progressive motility and DNA fragmentation index were not detected between TYB and ANTIOX-PC cryoprotectants in both normal and low sperm motility groups (P>0.05). However, ANTIOX-PC medium retained higher non-progressive motility and lower percentage of immotile sperm when compared to TYB medium, resulting in a greater total motile sperm count (P<0.05), regardless baseline values of motility characteristic of the normospermic or asthenozoospermic samples. CONCLUSIONS: ANTIOX-PC medium was effective to protect human sperm during a freeze-thaw cycle compared to the TYB medium. A clinically relevant advantage in better preserving kinetic parameters as higher total motility and lower immotile post-thawed sperm from ANTIOX-PC, in normal and low motility semen samples, demonstrated the positive impact of phospholipid and antioxidant treatment on sperm cryotolerance with high potential for egg yolk lipids replacement and biosafety.

9.
J Health Psychol ; 26(9): 1307-1317, 2021 08.
Article in English | MEDLINE | ID: mdl-31495231

ABSTRACT

Polycystic ovary syndrome predisposes alterations which contribute to the reduction of quality of life. This randomized controlled clinical trial study was to evaluate the effect of two protocols of aerobic exercise on quality of life in women with polycystic ovary syndrome. Women were allocated to three groups: continuous aerobic training (n = 28), intermittent aerobic training (n = 29), and control group (no training; n = 30). Testosterone levels, body composition indices, and quality of life were assessed at baseline and after 16 weeks of intervention. Both protocols were effective to improve testosterone levels, anthropometric indices, and quality of life in polycystic ovary syndrome women. Thus, these protocols should be included in the clinical environment to improve clinical parameters psychological, biological and social health to this population.


Subject(s)
Polycystic Ovary Syndrome , Quality of Life , Exercise , Exercise Therapy , Female , Humans , Polycystic Ovary Syndrome/therapy
10.
Gynecol Endocrinol ; 36(12): 1119-1123, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32496827

ABSTRACT

BACKGROUND: Idiopathic central precocious puberty (iCPP) presents a disproportionate advancement of bone age and maturation, as well as metabolic and endocrinological changes that may be related to effects on telomere biology. OBJECTIVE: To investigate the telomere length in iCPP girls treated with GnRHa. STUDY DESIGN: Observational case-control study with 85 girls, including 45 iCPP treated with GnRHa and 40 controls. It was analyzed age, height, weight and body mass index (BMI), insulin, triglycerides, testosterone, insulin resistance by HOMA, and telomere length by real-time PCR. Statistical analyses were determined by Wilcoxon test and Spearman correlation was carried out. RESULTS: Weight, BMI, insulin level and HOMA index were higher in the iCPP than in the control group (p < .01); without difference between mean ages. The telomere length did not differ between iCPP and control group. However, a negative correlation was observed between the telomere length and age in iCPP (p = .0009) and control group (p = .014), and weight in the iCPP (p = .017). CONCLUSIONS: We did not observe any difference in the telomere length in the iCPP and control group. Even though, some characteristics of the disease, such as increased weight and body fat, negatively influence the telomere biology.


Subject(s)
Gonadotropin-Releasing Hormone/analogs & derivatives , Leuprolide/therapeutic use , Puberty, Precocious/metabolism , Telomere/metabolism , Adolescent , Age Factors , Body Composition , Body Mass Index , Body Weight , Case-Control Studies , Child , Electric Impedance , Female , Humans , Insulin/blood , Insulin Resistance , Puberty, Precocious/drug therapy , Telomere Homeostasis , Young Adult
11.
Clin Endocrinol (Oxf) ; 93(2): 173-186, 2020 08.
Article in English | MEDLINE | ID: mdl-32286711

ABSTRACT

OBJECTIVE: To evaluate the effects of continuous (CA) and intermittent (IA) aerobic training on hormonal and metabolic parameters and body composition of women with polycystic ovary syndrome (PCOS). DESIGN: Prospective, interventional, randomized study. METHODS: Randomized controlled training (RCT) with sample allocation and stratification into three groups: CAT (n = 28) and IAT (n = 29) training and no training [control (CG), n = 30]. Before and after 16 weeks of intervention (CAT or IAT) or observation (CG), hormonal and metabolic parameters, body composition and anthropometric indices were evaluated. Aerobic physical training on a treadmill consisted of 30- to 50-minute sessions with intensities ranging from 60% to 90% of the maximum heart rate. RESULTS: In the CA group, there was reduction in waist circumference (WC) (P = .045), hip circumference (P = .032), cholesterol (P ≤ .001), low-density lipoprotein (P = .030) and testosterone (P ≤ .001). In the IAT group, there was a reduction in WC (P = .014), waist-to-hip ratio (P = .012), testosterone (P = .019) and the free androgen index (FAI) (P = .037). The CG showed increases in WC (P = .049), total body mass (P = .015), body fat percentage (P = .034), total mass of the arms (P ≤ .001), trunk fat percentage (P = .033), leg fat percentage (P = .021) and total gynoid mass (P = .011). CONCLUSION: CAT and IAT training reduced anthropometric indices and hyperandrogenism in PCOS, whereas only IAT training reduced the FAI. Furthermore, only CAT training improved the lipid profile.


Subject(s)
Hyperandrogenism , Polycystic Ovary Syndrome , Body Composition , Body Mass Index , Exercise , Female , Humans , Metabolome , Polycystic Ovary Syndrome/therapy
12.
Syst Biol Reprod Med ; 65(2): 95-104, 2019 Apr.
Article in English | MEDLINE | ID: mdl-30601031

ABSTRACT

Varicocele pathophysiology is related to increased oxidative stress, which might result in loss sperm DNA integrity as well as in genomic instability. Sperm telomere shortening and loss of global DNA methylation are the main features of genomic instability, leading to cell senescence and death, whereas sperm DNA fragmentation (SDF) characterizes the loss of chromatin integrity. We hypothesize that sperm genomic stability and DNA integrity is reduced in infertile men with moderate and large-sized varicoceles, thus being candidate markers of sperm quality in varicocele-related infertility. Here, we assessed the sperm global DNA methylation, telomere length, and SDF in men with and without clinically palpable varicoceles. While the rates of SDF and telomere length were not statistically different between varicocele patients and controls, global sperm DNA methylation seems to be lower in men with varicocele (49.7% ± 20.7%) than controls (64.7% ± 17.1%). A negative correlation between SDF and sperm motility and a positive correlation between sperm morphology and telomere length were observed. Our results suggest that varicocele may result in genomic instability, in particular, global DNA hypomethylation. However, a large sample size may confirm these findings. The understanding of the molecular mechanisms involved in the pathophysiology of varicocele-related infertility may help to better select candidates for varicocele repair.


Subject(s)
DNA Methylation , Telomere , Varicocele/genetics , Adult , Cross-Sectional Studies , DNA Fragmentation , Humans , Infertility, Male/genetics , Male , Spermatozoa/metabolism
13.
J Assist Reprod Genet ; 34(7): 839-847, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28523408

ABSTRACT

Varicocele is found in approximately 20% of adults and adolescents and in 19-41% of men seeking treatment for infertility. It is associated with a decrease in sperm count as well as sperm motility and morphology. The currently accepted description of the pathophysiology of varicocele does not explain all its clinical manifestations; therefore, other factors such as genetic and epigenetic changes, associated with the environment, might be involved in causing infertility and decrease in sperm quality. It has been reported that the varicocele-induced deterioration of testicular function is progressive and interferes with fertility; hence, early and efficient assessment of the genetic manifestations in patients would be important for developing future medical interventions. Chromosomal disorders, mutations, polymorphisms, changes in gene expression, and epigenetic changes have all been reported to be associated with varicocele. Several studies are underway to unravel the genetic basis of this disease, as it is important to understand the origin and the aggravating factors to ensure appropriate guidance and intervention. Here, we review the available literature regarding the genetic and epigenetic changes associated with varicocele, and how these alterations are related to the different clinical manifestations of the disease.


Subject(s)
Epigenesis, Genetic , Infertility, Male/complications , Varicocele/genetics , DNA Fragmentation , DNA, Mitochondrial/chemistry , Humans , Infertility, Male/genetics , Male , Oxidative Stress , Semen Analysis , Varicocele/pathology , Varicocele/physiopathology
14.
Open Access J Contracept ; 8: 13-23, 2017.
Article in English | MEDLINE | ID: mdl-29386951

ABSTRACT

Polycystic ovary syndrome (PCOS) is an endocrine disorder among women of reproductive age characterized by chronic anovulation and polycystic ovary morphology and/or hyperandrogenism. Management of clinical manifestations of PCOS, such as menstrual irregularities and hyperandrogenism symptoms, includes lifestyle changes and combined hormonal contraceptives (CHCs). CHCs contain estrogen that exerts antiandrogenic properties by triggering the hepatic synthesis of sex hormone-binding globulin that reduces the free testosterone levels. Moreover, the progestogen present in CHCs and in progestogen-only contraceptives suppresses luteinizing hormone secretion. In addition, some types of progestogens directly antagonize the effects of androgens on their receptor and also reduce the activity of the 5α reductase enzyme. However, PCOS is related to clinical and metabolic comorbidities that may limit the prescription of CHCs. Clinicians should be aware of risk factors, such as age, smoking, obesity, diabetes, systemic arterial hypertension, dyslipidemia, and a personal or family history, of a venous thromboembolic event or thrombophilia. This article reports a narrative review of the available evidence of the safety of hormonal contraceptives in women with PCOS. Considerations are made for the possible impact of hormonal contraceptives on endocrine, metabolic, and cardiovascular health.

15.
Reprod Sci ; 23(5): 644-54, 2016 May.
Article in English | MEDLINE | ID: mdl-26586671

ABSTRACT

BACKGROUND: Physical activity is known to relieve the metabolic complications of polycystic ovary syndrome (PCOS), and exercise is also associated with telomere biology. We investigated the changes induced by progressive resistance training (PRT) in telomere content and metabolic disorder in women with PCOS and controls. PARTICIPANTS AND METHODS: Forty-five women with PCOS and 52 healthy women aged 18 to 37 years were submitted to PRT. A linear periodization of PRT was prepared based on a trend of decreasing volume and intensity throughout the training period. The volunteers performed PRT 3 times a week for 4 months. The participants' physical characteristics and hormonal concentrations were measured before and after PRT, as telomere content that was measured using quantitative real-time polymerase chain reaction. RESULTS: Briefly, Progressive resistance training reduced waist circumference, body fat percentage, plasma testosterone and sex hormone-binding globulin concentrations, glycemia, and free androgen index. Fasting insulin and insulin resistance index were greater in women with PCOS. Androstenedione and homocysteine increased after PRT. There were no differences in telomere content between controls (0.96 ± 0.3 before vs 0.85 ± 0.21 after) and women with PCOS (0.94 ± 0.33 before vs 0.88 ± 0.39 after). Adjusted analysis showed telomere shortening after PRT in all women (0.95 ± 0.31 before vs 0.86 ± 0.31 after; P = .03). In women with PCOS, increased homocysteine levels were related to telomere reduction and increased androstenedione was positively correlated with telomere content after PRT. CONCLUSIONS: Progressive resistance training had positive effects on the hormonal and physical characteristics of women with PCOS and controls, but telomere content was reduced and homocysteine level increased in all participants.


Subject(s)
Polycystic Ovary Syndrome/blood , Polycystic Ovary Syndrome/therapy , Resistance Training/methods , Telomere/physiology , Adipose Tissue/physiology , Adolescent , Adult , Blood Glucose/metabolism , Female , Humans , Insulin Resistance/physiology , Obesity/blood , Obesity/diagnosis , Obesity/therapy , Polycystic Ovary Syndrome/diagnosis , Waist Circumference/physiology , Young Adult
16.
Med Sci Sports Exerc ; 48(4): 589-98, 2016 Apr.
Article in English | MEDLINE | ID: mdl-26587847

ABSTRACT

PURPOSE: This study investigated the effects of progressive resistance training (PRT) on lean muscle mass (LMM) in women with or without polycystic ovary syndrome (PCOS) and its effects on metabolic factors and concentrations of related steroid hormones. DESIGN: This was a nonrandomized, therapeutic, open, single-arm study. PARTICIPANTS: All in all, 45 sedentary women with PCOS and 52 without (non-PCOS), 18-37 yr of age, with body mass indexes (BMI) of 18-39.9 kg·m(-2) of all races and social status, performed PRT three times a week for 4 months. Before and after PRT, the concentrations of hormones and metabolic factors and waist circumference were measured. LMM and total body fat percentage were determined using dual-energy x-ray absorptiometry. Clinical characteristics, LMM, and fasting glucose were adjusted for confounding covariables and compared using general linear mixed models. Each patient's menstrual history was taken before study enrollment and after PRT. RESULTS: PRT resulted in reduced plasma testosterone and fasting glucose levels. After PRT, the androstenedione concentration increased and the sex hormone-binding globulin concentration decreased in women with PCOS. The waist circumference was reduced (P < 0.01) and the muscle mass index, lean mass (LM)/height2, increased in women with PCOS (P = 0.04). Women with PCOS showed increased muscle mass indexes of appendicular LM/height2 (P = 0.03) and LM/height2 (P < 0.01) compared with the baseline. Total LM and trunk LM were elevated in women with PCOS (P = 0.01) at the baseline and after PRT. CONCLUSION: To our knowledge, this is the first report to show that resistance exercise alone can improve hyperandrogenism, reproductive function, and body composition by decreasing visceral fat and increasing LMM, but it has no metabolic impact on women with PCOS.


Subject(s)
Exercise Therapy , Muscle, Skeletal/physiology , Polycystic Ovary Syndrome/therapy , Resistance Training , Absorptiometry, Photon , Adiposity , Adolescent , Adult , Androstenedione/blood , Blood Glucose/analysis , Female , Humans , Intra-Abdominal Fat , Sex Hormone-Binding Globulin/analysis , Testosterone/blood , Waist Circumference , Young Adult
17.
J Sex Med ; 12(7): 1584-90, 2015 Jul.
Article in English | MEDLINE | ID: mdl-25982537

ABSTRACT

INTRODUCTION: There is a need for specific measures to address overall care in women with polycystic ovary syndrome (PCOS). Physical resistance training (PRT) has been shown to improve certain body parameters. However, the effect of PRT on the sexual function of PCOS women has not been evaluated. AIM: The study aimed to assess sexual function and emotional status of PCOS women after 16 weeks of PRT. METHODS: This case-control study involved 43 women with PCOS and 51 control ovulatory women, aged 18-37 years. All women were subjected to a supervised PRT protocol for 16 weeks and evaluated at the end of the program. Sexual function was assessed at baseline and after PRT protocol. MAIN OUTCOME MEASURES: The main outcome measure used was the Female Sexual Function Index (FSFI). RESULTS: Of the 43 women with PCOS, 30 (69.70%) had a basal total FSFI score ≤ 26.55 and 24 of them (58.54%) had a score ≤ 26.55 after PRT (P = 0.08). Of the 51 control women, 32 (62.7%) and 27 (52.9%) had FSFI scores < 26.55 at baseline and after PRT, respectively (P = 0.06). Control women experienced a significant improvement in pain domain score after PRT (P < 0.03). PCOS women experienced significant increases in total score and in the desire, excitement and lubrication domains after PRT (P < 0.01 each). After PRT, there was a significant difference between the PCOS and control groups in the sexual desire domain (4.09 ± 1.29 vs. 3.75 ± 1.42, P = 0.04). Significantly fewer women in the PCOS group were at risk of depression (P < 0.01) and anxiety (P < 0.02) after than before PRT, whereas the differences in the control group were not significant. Mean depression and anxiety scores were reduced significantly in both the PCOS (P < 0.01 each) and control (P < 0.01) groups. CONCLUSIONS: PRT significantly enhanced total score and the desire, excitement, and lubrication domains of the FSFI in PCOS women. PRT reduced pain, and total depression and anxiety scores in both groups.


Subject(s)
Coitus/psychology , Obesity/psychology , Polycystic Ovary Syndrome/physiopathology , Resistance Training , Sexual Dysfunction, Physiological/physiopathology , Adult , Anxiety/etiology , Body Mass Index , Case-Control Studies , Depression/etiology , Female , Humans , Libido , Physical Examination , Polycystic Ovary Syndrome/psychology , Polycystic Ovary Syndrome/therapy , Self Report , Sexual Dysfunction, Physiological/psychology , Sexual Dysfunction, Physiological/therapy
18.
Gynecol Endocrinol ; 31(3): 237-42, 2015 Mar.
Article in English | MEDLINE | ID: mdl-25430509

ABSTRACT

The aim of this study was to compare metabolic parameters, body composition (BC) and muscle strength of women with and without polycystic ovary syndrome (PCOS). This was a case-control study that evaluated 40 women with PCOS and 40 controls. Androgens and insulin resistance were measured. BC was based on dual-energy X-ray absorptiometry. Isometric handgrip and maximal dynamic muscle strength (1-RM) strength tests were performed. Median total testosterone (p < 0.01), free androgen index (p < 0.01), insulin (p < 0.01) and homeostasis model assessment-insulin resistance (p = 0.02) were higher and sex hormone binding globulin (SBHG) (p = 0.04) was lower in the PCOS group. Normoweight women with PCOS had higher percentages of android body fat. However, the prevalence of android fat distribution was higher in the PCOS than in the control group (p = 0.04). The strength 1-RM in bench press (p < 0.01), muscle strength relative to lean muscle mass in the dominant lower limb (p = 0.04) and isometric handgrip strength tests (p = 0.03) was higher in the PCOS group. PCOS was a determinant of strength in the bench press exercise (p = 0.04). The hyperandrogenism was a predictor of increased strength in biceps curl exercises (p = 0.03) in the dominant lower limb (p = 0.02) and isometric handgrip strength (p = 0.03). In conclusion, women with PCOS have greater muscle strength and a higher prevalence of central obesity, but no difference in BC. Muscle strength may be related to high androgen levels in these women.


Subject(s)
Body Composition/physiology , Hand Strength/physiology , Muscle Strength/physiology , Polycystic Ovary Syndrome/physiopathology , Adolescent , Adult , Androgens/blood , Case-Control Studies , Female , Humans , Insulin/blood , Insulin Resistance/physiology , Polycystic Ovary Syndrome/blood , Young Adult
19.
Fertil Steril ; 103(2): 542-7.e2, 2015 Feb.
Article in English | MEDLINE | ID: mdl-25467041

ABSTRACT

OBJECTIVE: To analyze whether leukocyte telomere length (LTL) is impaired in women with polycystic ovary syndrome (PCOS). DESIGN: Case-control study. SETTING: Hospital. PATIENT(S): A total of 274 women, including 150 patients with PCOS and 124 controls. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Body mass index (BMI), waist circumference, systemic arterial pressure, lipid profile, E(2), LH, T, androstenedione, PRL, TSH, sex hormone-binding globulin, C-reactive protein (CRP), homocysteine, free androgen index, and the homeostatic model of insulin sensitivity (HOMA-IR) index were analyzed. The LTL evaluation was measured by quantitative polymerase chain reaction. RESULT(S): The PCOS group had higher values for weight, BMI, waist circumference, systolic arterial pressure, triglycerides, LH, T, insulin, CRP, free androgen index, and HOMA-IR compared with the control group. Sex hormone-binding globulin and E(2) levels were lower in the PCOS group than in the control group. The LTL did not differ between groups. Age, BMI, and HOMA-IR had no significant effect on LTL. The inflammatory biomarkers CRP and homocysteine were negatively correlated with LTL in patients with PCOS. CONCLUSION(S): Our results showed no differences in LTL between patients with PCOS and controls, but CRP and homocysteine biomarkers negatively correlated with LTL in the PCOS group.


Subject(s)
Inflammation Mediators/blood , Polycystic Ovary Syndrome/blood , Polycystic Ovary Syndrome/diagnosis , Telomere Homeostasis/physiology , Telomere/metabolism , Adolescent , Adult , Biomarkers/blood , Case-Control Studies , Female , Humans , Middle Aged , Young Adult
20.
Rev Bras Ginecol Obstet ; 34(8): 357-61, 2012 Aug.
Article in Portuguese | MEDLINE | ID: mdl-23080278

ABSTRACT

PURPOSE: To compare the frequency of metabolic syndrome (MetS) and the risk factors associated with this syndrome in women from the Brazilian Southeast with polycystic ovary syndrome (POS) evaluated during adolescence and adult age. METHODS: This was a cross-sectional study conducted on 147 patients with a diagnosis of POS who were divided into two groups: Adolescents, 42 adolescents aged 13 to 19 years, and Adults, 105 women aged 20 to 40 years. The following factors were evaluated: clinical characteristics (body mass index - BMI, Ferriman index, abdominal circumference - AC, and systemic arterial pressure), mean ovarian volume, laboratory variables (serum androgen profile, lipid profile, glycemia, and fasting insulin), and frequency of MetS. The results were expressed as mean±standard deviation. We used multiple logistic regression with the response variable being the presence of MetS and the predictor variables the levels of total testosterone, insulin and BMI. RESULTS: The frequency of MetS was approximately twice higher in the group of adult women compared to the adolescents with POS (Adolescents: 23.8 vs. Adults: 42.9%, p=0.04). Among the defining criteria of MetS, only the qualitative variable of systemic arterial pressure ≥130/85 mmHg was more frequent among the adult women (p=0,01). The BMI was an independent predictor of MetS among the adolescent (p=0.03) and adult women (p<0.01) with POS. Serum insulin level was a predictor of MetS only among adult women with POS (p<0.01). AC was greater among adult women (p=0.04). CONCLUSION: Adult women with POS have a twice higher frequency of MetS than adolescents with POS from the Brazilian Southeast. Although the BMI is associated with the development of MetS in any phase of life in women with POS, serum insulin level was an independent predictor of MetS only among adult women with this disorder.


Subject(s)
Metabolic Syndrome/epidemiology , Metabolic Syndrome/etiology , Polycystic Ovary Syndrome/complications , Adolescent , Adult , Brazil , Cross-Sectional Studies , Female , Humans , Risk Factors , Young Adult
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