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1.
Br J Nutr ; 120(4): 435-444, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29784070

RESUMO

Carbohydrate quantity and quality affect postprandial glucose response, glucose metabolism and risk of type 2 diabetes. The aim of this study was to examine the association of pre-pregnancy dietary carbohydrate quantity and quality with the risk of developing gestational diabetes mellitus (GDM). We used data from the Australian Longitudinal Study on Women's Health that included 3607 women aged 25-30 years without diabetes who were followed up between 2003 and 2015. We examined carbohydrate quantity (total carbohydrate intake and a low-carbohydrate diet (LCD) score) and carbohydrate subtypes indicating quality (fibre, total sugar intake, glycaemic index, glycaemic load and intake of carbohydrate-rich food groups). Relative risks (RR) for development of GDM were estimated using multivariable regression models with generalised estimating equations. During 12 years of follow-up, 285 cases of GDM were documented in 6263 pregnancies (4·6 %). The LCD score, reflecting relatively high fat and protein intake and low carbohydrate intake, was positively associated with GDM risk (RR 1·54; 95 % CI 1·10, 2·15), highest quartile v. lowest quartile). Women in the quartile with highest fibre intake had a 33 % lower risk of GDM (RR 0·67; 95 % CI 0·45, 0·96)). Higher intakes of fruit (0·95 per 50 g/d; 95 % CI 0·90, 0·99) and fruit juice (0·89 per 100 g/d; 95 % CI 0·80, 1·00)) were inversely associated with GDM, whereas cereal intake was associated with a higher risk of GDM (RR 1·05 per 20 g/d; 95 % CI 1·01, 1·07)). Thus, a relatively low carbohydrate and high fat and protein intake may increase the risk of GDM, whereas higher fibre intake could decrease the risk of GDM. It is especially important to take the source of carbohydrates into account.


Assuntos
Diabetes Gestacional/diagnóstico , Dieta , Carboidratos da Dieta/administração & dosagem , Risco , Adolescente , Adulto , Austrália , Carboidratos , Diabetes Mellitus Tipo 2/diagnóstico , Dieta com Restrição de Carboidratos , Feminino , Índice Glicêmico , Carga Glicêmica , Humanos , Estudos Longitudinais , Análise Multivariada , Avaliação Nutricional , Gravidez , Estudos Prospectivos , Saúde da Mulher , Adulto Jovem
2.
Br J Nutr ; 119(4): 398-406, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29498342

RESUMO

Polycystic ovary syndrome (PCOS) is one of the most common causes of infertility in women of reproductive age. Insulin resistance is a main pathophysiologic feature in these patients. According to some studies, the intake of probiotic bacteria may improve glucose homoeostasis. The aim of this study was to investigate the effect of synbiotics on metabolic parameters and apelin in PCOS patients. This randomised double-blind placebo-controlled trial was conducted on eighty-eight PCOS women aged 19-37 years old. The participants were randomly assigned to two groups receiving (1) synbiotic supplement (n 44), and (2) placebo (n 44) for 12 weeks. Fasting blood samples were taken at baseline and after 12 weeks. The two groups showed no difference in fasting blood sugar (adjusted mean difference: 0·60; 95 % CI -3·80, 5·00, P=0·727), plasma glucose fasting 2-h (adjusted mean difference 2·09; 95 % CI -9·96, 14·15, P=0·134), HbA1c (adjusted mean difference 0·06; 95 % CI -0·09, 0·22, P=0·959), homoeostatic model assessment-insulin resistance (HOMA-IR) (adjusted mean difference: 0·02; 95 % CI -0·99, 1·03, P=0·837), quantitative insulin sensitivity check index (QUICKI) (adjusted mean difference: -0·02; 95 % CI -0·33, 0·29, P=0·940) and C-reactive protein (CRP) (adjusted mean difference: 0·24; 95 % CI -1·61, 2·08, P=0·141) by the end of the intervention. A significant difference was observed in the mean apelin 36 before and after the intervention between synbiotic and placebo groups (adjusted mean difference: -4·05; 95 % CI -7·15, -0·96, P=0·004). A 12-week synbiotic supplementation has no significant beneficial effects on HOMA-IR and CRP in PCOS patients, whereas the level of apelin 36 significantly decreased.


Assuntos
Apelina/sangue , Glicemia/metabolismo , Proteína C-Reativa/metabolismo , Resistência à Insulina , Síndrome do Ovário Policístico/tratamento farmacológico , Probióticos , Simbióticos , Adulto , Método Duplo-Cego , Jejum , Feminino , Hemoglobinas Glicadas/metabolismo , Humanos , Insulina/sangue , Síndrome do Ovário Policístico/metabolismo , Probióticos/uso terapêutico , Adulto Jovem
3.
Nutr Res Rev ; 31(2): 291-301, 2018 12.
Artigo em Inglês | MEDLINE | ID: mdl-30033891

RESUMO

High carbohydrate intake and low-grade inflammation cooperate with insulin resistance and hyperandrogenism to constitute an interactive continuum acting on the pathophysiology of polycystic ovary syndrome (PCOS), the most common endocrine disorder in women of reproductive age characterised by oligo-anovulatory infertility and cardiometabolic disorders. The role of insulin in PCOS is pivotal both in regulating the activity of ovarian and liver enzymes, respectively involved in androgen production and in triggering low-grade inflammation usually reported to be associated with an insulin resistance, dyslipidaemia and cardiometabolic diseases. Although an acute hyperglycaemia induced by oral glucose loading may increase inflammation and oxidative stress by generating reactive oxygen species through different mechanisms, the postprandial glucose increment, commonly associated with the Western diet, represents the major contributor of chronic sustained hyperglycaemia and pro-inflammatory state. Together with hyperinsulinaemia, hyperandrogenism and low-grade inflammation, unhealthy diet should be viewed as a key component of the 'deadly quartet' of metabolic risk factors associated with PCOS pathophysiology. The identification of a tight diet-inflammation-health association makes the adoption of healthy nutritional approaches a primary preventive and therapeutic tool in women with PCOS, weakening insulin resistance and eventually promoting improvements of reproductive life and endocrine outcomes. The intriguing nutritional-endocrine connections operating in PCOS underline the role of expert nutritionists in the management of this syndrome. The aim of the present review is to provide an at-a-glance overview of the possible bi-directional mechanisms linking inflammation, androgen excess and carbohydrate intake in women with PCOS.


Assuntos
Androgênios/sangue , Glicemia/metabolismo , Dieta/efeitos adversos , Carboidratos da Dieta/efeitos adversos , Inflamação/complicações , Insulina/sangue , Síndrome do Ovário Policístico/complicações , Carboidratos da Dieta/administração & dosagem , Feminino , Humanos , Hiperandrogenismo/sangue , Hiperandrogenismo/complicações , Hiperinsulinismo/sangue , Hiperinsulinismo/complicações , Inflamação/sangue , Resistência à Insulina , Síndrome do Ovário Policístico/sangue
4.
Nutr Res Rev ; 30(1): 97-105, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28222828

RESUMO

Women with polycystic ovary syndrome (PCOS) have a considerable risk of metabolic dysfunction. This review aims to present contemporary knowledge on obesity, insulin resistance and PCOS with emphasis on the diagnostic and methodological challenges encountered in research and clinical practice. Variable diagnostic criteria for PCOS and associated phenotypes are frequently published. Targeted searches were conducted to identify all available data concerning the association of obesity and insulin resistance with PCOS up to September 2016. Articles were considered if they were peer reviewed, in English and included women with PCOS. Obesity is more prevalent in women with PCOS, but studies rarely reported accurate assessments of adiposity, nor split the study population by PCOS phenotypes. Many women with PCOS have insulin resistance, though there is considerable variation reported in part due to not distinguishing subgroups known to have an impact on insulin resistance as well as limited methodology to measure insulin resistance. Inflammatory markers are positively correlated with androgen levels, but detailed interactions need to be identified. Weight management is the primary therapy; specific advice to reduce the glycaemic load of the diet and reduce the intake of pro-inflammatory SFA and advanced glycation endproducts have provided promising results. It is important that women with PCOS are educated about their increased risk of metabolic complications in order to make timely and appropriate lifestyle modifications. Furthermore, well-designed robust studies are needed to evaluate the mechanisms behind the improvements observed with dietary interventions.


Assuntos
Resistência à Insulina/fisiologia , Doenças Metabólicas/epidemiologia , Obesidade/complicações , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/diagnóstico , Adiposidade , Diabetes Mellitus Tipo 2/epidemiologia , Dieta , Feminino , Intolerância à Glucose/complicações , Intolerância à Glucose/epidemiologia , Humanos , Hiperandrogenismo/epidemiologia , Síndrome Metabólica/epidemiologia , Hepatopatia Gordurosa não Alcoólica/epidemiologia , Obesidade/epidemiologia , Educação de Pacientes como Assunto , Fenótipo , Síndrome do Ovário Policístico/classificação , Fatores de Risco
5.
Front Physiol ; 15: 1436954, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39156826

RESUMO

Polycystic ovary syndrome (PCOS) is the leading cause of anovulatory infertility in women of reproductive age, and obesity can increase the severity and development of the PCOS phenotype. Prenatal testosterone (T) treatment between gestational days 30-90 advanced puberty and disrupted the reproductive and metabolic phenotype in female sheep, recapitulating attributes of women with PCOS, with postnatal obesity amplifying its severity. On the other hand, prenatal T treatment from gestational days 60-90 led to a much milder phenotype. We hypothesized that reproductive neuroendocrine defects programmed by prenatal T treatment between gestational days 60-90 are amplified by postnatal obesity in sheep. Suffolk ewes received T propionate (T; 100 mg) or corn oil (C; vehicle) twice weekly from gestational days 60-90. At 5 months of age, T lambs were assigned to either a maintenance (100% of NRC requirements) or overfed (130% NRC) diet and C lambs were fed the maintenance diet. We compared the timing of puberty (n = 15/group) determined by twice weekly measurement of progesterone concentrations, estradiol positive feedback responsiveness (n = 8/group) determined by assessing LH secretion in response to exogenous estradiol, periovulatory LH dynamics during the second breeding season (n = 8/group) following synchronization with two injections of PGF2α, and progesterone negative feedback (n = 8/group) determined by characterizing LH pulses during the mid-luteal phase between C, T-maintenance and T-overfed groups. Our findings indicate that postnatal obesity: 1) exacerbated reproductive defects and further deteriorated reproductive cyclicity during the second breeding season (adulthood); 2) did not amplify the impairment in estradiol positive feedback in delaying the timing and amplitude of the LH surge, although it reduced the total amount of LH secreted during the preovulatory LH surge; 3) amplified the reduced responsiveness to progesterone negative feedback manifested as an increase in LH pulse amplitude and peak. These observations, in addition to supporting our previous findings that prenatal T treatment results in reproductive neuroendocrine dysfunction and periovulatory disruptions, provide evidence that these neuroendocrine defects programmed between gestational days 60-90 are amplified by postnatal obesity in female sheep.

6.
Endocrine ; 83(1): 227-241, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37653215

RESUMO

PURPOSE: Polycystic ovary syndrome (PCOS) is characterized by reproductive dysfunctions and metabolic disorders. This study aims to compare the therapeutic effectiveness of glucagon-like peptide-1 receptor agonist (GLP-1RA) + Metformin (Met) versus cyproterone acetate/ethinylestradiol (CPA/EE) + Met in overweight PCOS women and identify potential proteomic biomarkers of disease risk in women with PCOS. METHODS: In this prospective, open-label randomized controlled trial, we recruited 60 overweight PCOS women into two groups at a 1:1 ratio to receive CPA/EE (2 mg/day: 2 mg cyproterone acetate and 35-µg ethinylestradiol,) +Met (1500 mg/day) or GLP-1 RA (liraglutide, 1.2-1.8 mg/day) +Met (1500 mg/day) for 12 weeks. The clinical effectiveness and adverse effects were evaluated, followed by plasma proteomic analysis and verification of critical biomarkers by ELISA. RESULTS: Eighty(80%) patients completed the study. Both interventions improved menstrual cycle, polycystic ovaries, LH(luteinizing hormone) and HbA1c(hemoglobin A1c) levels after the 12-week treatment. GLP-1RA + Met was more effective than CPA/EE + Met in reducing body weight, BMI (Body Mass Index), and waist circumference, FBG(fasting blood glucose), AUCI(area under curve of insulin),TC (Total Cholesterol), IL-6(Interleukin-6) and improving insulin sensitivity, and ovulation in overweight women with PCOS, with acceptable short-term side effects. CPA/EE + Met was more effective in improving hyperandrogenemia, including T(total testosterone), LH, LH/FSH(Luteinizing hormone/follicle-stimulating hormone), SHBG(sex hormone-binding globulin) and FAI (free androgen index). By contract, GLP-1RA+Met group only improved LH. Plasma proteomic analysis revealed that the interventions altered proteins involved in reactive oxygen species detoxification (PRDX6, GSTO1, GSTP1, GSTM2), platelet degranulation (FN1), and the immune response (SERPINB9). CONCLUSIONS: Both CPA/EE+Met and GLP-1RA + Met treatment improved reproductive functions in overweight PCOS women. GLP-1RA + Met was more effective than CPA/EE + Met in reducing body weight, BMI, and waist, and improving metabolism, and ovulation in overweight women with PCOS, with acceptable short-term side effects. CPA/EE + Met was more effective in reducing hyperandrogenemia. The novel plasma biomarkers PRDX6, FN1, and SERPINB9, might be indicators and targets for PCOS treatment. TRIAL REGISTRATION CLINICALTIALS. GOV TRIAL NO: NCT03151005. Registered 12 May, 2017, https://clinicaltrials.gov/ct2/show/NCT03151005 .


Assuntos
Resistência à Insulina , Metformina , Síndrome do Ovário Policístico , Feminino , Humanos , Metformina/uso terapêutico , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/tratamento farmacológico , Acetato de Ciproterona/uso terapêutico , Etinilestradiol/uso terapêutico , Sobrepeso/complicações , Sobrepeso/tratamento farmacológico , Estudos Prospectivos , Proteômica , Hormônio Luteinizante , Biomarcadores , Glutationa Transferase/uso terapêutico
7.
Front Endocrinol (Lausanne) ; 14: 1116482, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36875467

RESUMO

Introduction: Polycystic ovary syndrome (PCOS) is the most common infertility disorder worldwide, typically characterised by high circulating androgen levels, oligo- or anovulation, and polycystic ovarian morphology. Sexual dysfunction, including decreased sexual desire and increased sexual dissatisfaction, is also reported by women with PCOS. The origins of these sexual difficulties remain largely unidentified. To investigate potential biological origins of sexual dysfunction in PCOS patients, we asked whether the well-characterized, prenatally androgenized (PNA) mouse model of PCOS exhibits modified sex behaviours and whether central brain circuits associated with female sex behaviour are differentially regulated. As a male equivalent of PCOS is reported in the brothers of women with PCOS, we also investigated the impact of maternal androgen excess on the sex behaviour of male siblings. Methods: Adult male and female offspring of dams exposed to dihydrotestosterone (PNAM/PNAF) or an oil vehicle (VEH) from gestational days 16 to 18 were tested for a suite of sex-specific behaviours. Results: PNAM showed a reduction in their mounting capabilities, however, most of PNAM where able to reach ejaculation by the end of the test similar to the VEH control males. In contrast, PNAF exhibited a significant impairment in the female-typical sexual behaviour, lordosis. Interestingly, while neuronal activation was largely similar between PNAF and VEH females, impaired lordosis behaviour in PNAF was unexpectedly associated with decreased neuronal activation in the dorsomedial hypothalamic nucleus (DMH). Conclusion: Taken together, these data link prenatal androgen exposure that drives a PCOS-like phenotype with altered sexual behaviours in both sexes.


Assuntos
Lordose , Síndrome do Ovário Policístico , Feminino , Masculino , Gravidez , Humanos , Animais , Camundongos , Androgênios , Irmãos , Virilismo
8.
Cureus ; 15(12): e51321, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-38288169

RESUMO

Polycystic ovary syndrome (PCOS) is a prevalent endocrine disorder with multifaceted manifestations, affecting both physiological and psychosocial aspects of affected individuals. This abstract provides a succinct overview of the hormonal underpinnings in the pathogenesis of PCOS, focusing on altered luteinizing hormone (LH) action, insulin resistance, and hyperandrogenism. A prevailing theory suggests that insulin resistance exacerbates hyperandrogenism by influencing the synthesis of sex hormone-binding globulin and increasing androgen production from adrenal and ovarian sources. PCOS diagnosis relies on specific criteria related to hyperandrogenism, ovulatory dysfunction, and the presence of polycystic ovaries. Beyond its physical symptoms, PCOS profoundly impacts women's mental health and quality of life. The prevalence of PCOS underscores the urgency of understanding its hormonal intricacies. Insulin resistance and hyperandrogenism, particularly in the context of sex hormone-binding globulin suppression, play a central role in PCOS pathogenesis. Recognizing the key role of hormones, particularly insulin resistance and hyperandrogenism, provides a foundation for targeted interventions and treatment strategies. A comprehensive approach to PCOS must consider both its physiological and psychosocial dimensions to address the challenges faced by affected individuals.

9.
Mol Genet Metab Rep ; 35: 100965, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36941956

RESUMO

Severe insulin resistance can be caused by rare genetic defects in the insulin receptor known as insulin receptoropathies. These genetic defects cause a wide spectrum of clinical manifestations ranging from mild syndromes to lethal disorders. Among those is the HAIR-AN an extreme subtype of polycystic ovary syndrome (PCOS). We present a case of a 29-year-old woman with amenorrhea, severe insulin resistance, hirsutism, and acanthosis nigricans who also developed endometrial cancer. She was found to carry a novel heterozygous nonsense mutation insulin receptor gene (INSR). The mutation was inherited from the mother. Levels of insulin receptor and AKT were measured using Western-Blot from peripheral blood mononuclear cells and were both decreased. Thus, we conclude that the identified mutation in the insulin receptor gene and lead to decreased activity of the downstream signaling of the insulin pathway.

10.
J Med Life ; 16(11): 1615-1621, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38406771

RESUMO

Polycystic ovary syndrome (PCOS) is one of the most prevalent metabolic diseases during female reproductive life, often associated with insulin resistance and hyperprolactinemia. The efficacy of metformin and cabergoline for managing PCOS remains debated in the literature. This three-arm interventional study in Iraq assessed the effects of these drugs on body mass index (BMI), hormonal balance, and uterine artery blood flow in 75 women with PCOS and hyperprolactinemia. Participants were randomized into three groups: metformin (500 mg twice daily), cabergoline (0.5 mg weekly), and a combination of both, with 25 patients in each group. Baseline and 90-day follow-up characteristics included BMI, serum hormonal levels, and ultrasound features. Metformin resulted in significant weight reduction (p=0.038); however, the addition of cabergoline caused a more significant reduction in body mass index (p=0.001). The combined treatment significantly lowered testosterone levels (p=0.008). In addition, this combination significantly reduced the level of LH (p=0.043) and increased the level of FSH (p=0.047). The results suggest that metformin and cabergoline when used together, act synergistically and safely to reduce BMI, testosterone, and LH levels while increasing FSH levels. Furthermore, this combination improved endometrial blood flow and ovulation in women with PCOS.


Assuntos
Hiperprolactinemia , Metformina , Síndrome do Ovário Policístico , Feminino , Humanos , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/tratamento farmacológico , Metformina/uso terapêutico , Cabergolina/uso terapêutico , Hormônio Luteinizante/uso terapêutico , Iraque , Hiperprolactinemia/complicações , Hiperprolactinemia/tratamento farmacológico , Hormônio Foliculoestimulante , Testosterona
11.
Gynecol Oncol Rep ; 45: 101127, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36636580

RESUMO

Background: Fibroid is the most prevalent benign tumor of the female genital tract. Intravenous and intracardiac leiomyomatosis (IVL and ICLM, respectively) are rare complications that present with symptoms of pulmonary thromboembolism and heart failure and whose etiology, despite controversial, is a direct vascular invasion by a primary uterine leiomyoma. Case presentation: We present the case of a 31-year-old female patient with a previous history of pelvic pain and dysmenorrhea, whose ultrasound showed an enlarged and heterogeneous uterus. Complete hysterectomy was performed, and the anatomopathological examination showed leiomyomas without evidence of malignancy. One month later, the patient manifested dyspnea and chest pain. A neoplastic thrombus was identified, extending from the inferior vena cava to the right atrium, for which we proceeded with cavo-atrial thrombectomy under Normothermic Cardiopulmonary Bypass (CPB) with Warm Blood Cardioplegia (WBC). A metastatic lung injury of non-malignant histology was also detected. Discussion: Uterine leiomyoma is a very common benign tumor of the female genital tract. IVL with ICLM are rare and difficult-to-treat complications, whose etiology is a direct vascular invasion by a primary uterine leiomyoma, although it is still controversial. The incidence of ICLM is 10 to 30% of IVL cases. The main symptoms of ICLM are dyspnea, syncope, edema of the lower extremities and palpitations. Treatment is based on complete surgical removal of the tumor thrombus. Studies demonstrated that the one-stage procedure is safer from the patient's perspective and that CPB with WBC reduced intraoperative blood loss and total operative time, ensuring a less traumatic postoperative. Conclusions: Most patients with uterine leiomyoma are asymptomatic and acute complications are rare. In ICLM clinical manifestations are related to heart failure and flow obstruction. Because of the severity of the condition and the curative potential of treatment, surgery is morbid but highly recommended. The use of CPB with WBC improved the postoperative period and increased the patient's quality of life.

12.
J Med Life ; 16(11): 1658-1662, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-38406787

RESUMO

Vitamin D receptor (VDR) expression in the female reproductive tract explains the regulatory role of vitamin D on inflammatory cytokine and prostaglandin (PGD) synthesis. This study aimed to evaluate the effect of vitamin D on adolescents' primary dysmenorrhea and the relationship between Vit. D and adolescents' primary dysmenorrhea. Eighty-five adolescents were included in the current study. After a detailed evaluation, pelvic sonography was performed for all participants to rule out any pelvic pathology. Blood samples were collected to measure thyroid stimulating hormone (TSH), prolactin, glycosylated hemoglobin (HbA1C), and 25-hydroxyvitamin D (25[OH]D). Participants were administered vitamin D (50,000 IU weekly for five months), and their dysmenorrhea symptoms were evaluated before and after this period using the Visual Analog Scale (VAS) and the Verbal Multidimensional Scoring (VMS). The mean VAS and VMS scores of dysmenorrhea statistically decreased from 8.7±0.91 and 2.65±0.93 to 4.8±0.75 and 0.80±0.75, respectively, after vitamin D intake (p=0.03 and 0.025, respectively). Significant negative associations between 25(OH)D and VAS (R = -0.886; p<0.00001) and VMS of dysmenorrhea (R = -0.885; p<0.00001) were detected in this study. Vit. D could be a useful therapeutic option to reduce the severity of primary dysmenorrhea and could limit the use of non-steroidal anti-inflammatory drugs.


Assuntos
Dismenorreia , Deficiência de Vitamina D , Feminino , Adolescente , Humanos , Dismenorreia/tratamento farmacológico , Vitamina D/uso terapêutico , Vitaminas , Calcifediol
13.
J Nutr Sci ; 12: e103, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37771507

RESUMO

This review discusses epigenetic mechanisms and the relationship of infertility in men and women in relation to parameters pertaining to nutrition. The prevalence of infertility worldwide is 8-12 %, and one out of every eight couples receives medical treatment. Epigenetic mechanisms, aging, environmental factors, dietary energy and nutrients and non-nutrient compounds; more or less energy intake, and methionine come into play in the occurrence of infertility. It also interacts with vitamins B12, D and B6, biotin, choline, selenium, zinc, folic acid, resveratrol, quercetin and similar factors. To understand the molecular mechanisms regulating the expression of genes that affect infertility, the environment, the role of genotype, age, health, nutrition and changes in the individual's epigenotype must first be considered. This will pave the way for the identification of the unknown causes of infertility. Insufficient or excessive intake of energy and certain macro and micronutrients may contribute to the occurrence of infertility as well. In addition, it is reported that 5-10 % of body weight loss, moderate physical activity and nutritional interventions for improvement in insulin sensitivity contribute to the development of fertility. Processes that pertain to epigenetics carry alterations which are inherited yet not encoded via the DNA sequence. Nutrition is believed to have an impact over the epigenetic mechanisms which are effective in the pathogenesis of several diseases like infertility. Epigenetic mechanisms of individuals with infertility are different from healthy individuals. Infertility is associated with epigenetic mechanisms, nutrients, bioactive components and numerous other factors.


Assuntos
Infertilidade Feminina , Humanos , Masculino , Feminino , Infertilidade Feminina/genética , Epigênese Genética , Genótipo
14.
Front Endocrinol (Lausanne) ; 13: 868572, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35757434

RESUMO

Obesity, altered glucose homeostasis, hyperinsulinism, and reproductive dysfunction develops in female humans and mammals with hyperandrogenism. We previously reported that low dose dihydrotestosterone (DHT) administration results in metabolic and reproductive dysfunction in the absence of obesity in female mice, and conditional knock-out of the androgen receptor (Ar) in the liver (LivARKO) protects female mice from DHT-induced glucose intolerance and hyperinsulinemia. Since altered metabolic function will regulate reproduction, and liver plays a pivotal role in the reversible regulation of reproductive function, we sought to determine the reproductive phenotype of LivARKO mice under normal and hyperandrogenemic conditions. Using Cre/Lox technology, we deleted the Ar in the liver, and we observed LivARKO female mice have normal puberty timing, cyclicity and reproductive function. After DHT treatment, like control mice, LivARKO experience altered estrous cycling, reduced numbers of corpus lutea, and infertility. Liver Ar is not involved in hyperandrogenemia-induced reproductive dysfunction. The reproductive dysfunction in the DHT-treated LivARKO lean females with normal glucose homeostasis indicates that androgen-induced reproductive dysfunction is independent from metabolic dysfunction.


Assuntos
Hiperandrogenismo , Síndrome do Ovário Policístico , Receptores Androgênicos , Reprodução , Animais , Di-Hidrotestosterona/farmacologia , Feminino , Glucose/metabolismo , Humanos , Hiperandrogenismo/induzido quimicamente , Hiperandrogenismo/genética , Hiperandrogenismo/metabolismo , Hiperandrogenismo/fisiopatologia , Fígado/metabolismo , Camundongos , Obesidade/metabolismo , Síndrome do Ovário Policístico/induzido quimicamente , Síndrome do Ovário Policístico/genética , Síndrome do Ovário Policístico/metabolismo , Receptores Androgênicos/deficiência , Receptores Androgênicos/metabolismo , Reprodução/fisiologia
15.
Front Endocrinol (Lausanne) ; 13: 888460, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35813634

RESUMO

Polycystic ovary syndrome (PCOS) is a polyendocrine disorder and the most common endocrinopathy in women of reproductive age. Affected women have an elevated prevalence of being overweight and obese. Our study sought to determine how weight loss associated with lifestyle changes affects the endometrium specific proteome, endocrine-metabolic characteristics, and motor capabilities of obese women with PCOS and infertility. A group of 12 infertile women under the age of 38 with PCOS and BMI ≥30 kg/m2 were included in the study. An evaluation was performed by a gynecologist and an endocrinologist. The weight-loss program lasted 8 weeks under the guidance of a professional trainer. Endometrial sampling during a period of implantation window for proteome determination was performed before and after weight loss. In endometrial samples at the end of the study increased protein abundance was recorded for Legumain, Insulin-like growth factor-binding protein 7, Hepatocyte growth factor receptor, Keratin, type II cytoskeletal 7, and Cystatin-B, while the B-lymphocyte antigen CD20 protein abundance decreased. Our results also indicate significantly lowered fasting blood glucose level and free testosterone concentration and significant improvements in body composition and physical capacity. This study may open up the venues for investigating important biomarkers that may affect endometrial receptivity. Clinical Trial Registration: https://clinicaltrials.gov/ct2/show/NCT04989244?term=NCT04989244&draw=2&rank=1, identifier: NCT04989244.


Assuntos
Infertilidade Feminina , Síndrome do Ovário Policístico , Endométrio , Feminino , Humanos , Infertilidade Feminina/complicações , Estilo de Vida , Obesidade/complicações , Obesidade/metabolismo , Síndrome do Ovário Policístico/complicações , Síndrome do Ovário Policístico/metabolismo , Proteoma/metabolismo , Redução de Peso
16.
AACE Clin Case Rep ; 8(1): 6-7, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35097192

RESUMO

OBJECTIVE: Prader-Willi syndrome (PWS) is associated with multiple endocrinopathies, including hypogonadism. The mechanism underlying hypogonadism in PWS is thought to be secondary to hypothalamic dysfunction, primary gonadal defect, or a combination of both. Here, we present a case of hyperestrogenism in PWS due to concomitant polycystic ovary syndrome (PCOS) and therapeutic considerations regarding hormone replacement therapy (HRT). CASE REPORT: An 18-year-old woman with PWS transferred to adult care from pediatrics was found to have hyperestrogenism (specifically, elevated estrone with normal estradiol levels). Additionally, she demonstrated oligomenorrhea and hyperandrogenism, meeting diagnostic criteria for PCOS. After 3 months of therapy with cyclic medroxyprogesterone alone, she developed normal withdrawal bleeding. DISCUSSION: Given the elevated estrone and normal estradiol levels, our patient's hyperestrogenism is thought to be a direct result of her hyperandrogenism due to peripheral conversion. Prolonged exposure to unopposed estrogen is an established risk factor for endometrial cancer development in PCOS; thus, this was taken into account regarding her HRT, and she was treated with cyclic progesterone alone. CONCLUSION: Women with PWS are typically treated with combined estrogen and progesterone HRT; however, our case, a unique presentation of PCOS in PWS, demonstrated the importance of tailoring HRT to a patient's specific needs.

17.
Comput Struct Biotechnol J ; 20: 1541-1553, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35465162

RESUMO

The presence of microbial communities in the reproductive tract has been revealed, and this resident microbiota is involved in the maintenance of health. Intentional modulation via probiotics has been proposed as a possible strategy to enhance reproductive health and reduce the risk of diseases. The male seminal microbiota has been suggested as an important factor that influences a couple's health, pregnancy outcomes, and offspring health. Probiotics have been reported to play a role in male fertility and to affect the health of mothers and offspring. While the female reproductive microbiota is more complicated and has been identified in both the upper and lower reproductive systems, they together contribute to health maintenance. Probiotics have shown regulatory effects on the female reproductive tract, thereby contributing to homeostasis of the tract and influencing the health of offspring. Further, through transmission of bacteria or through other indirect mechanisms, the parent's reproductive microbiota and probiotic intervention influence infant gut colonization and immunity development, with potential health consequences. In vitro and in vivo studies have explored the mechanisms underlying the benefits of probiotic administration and intervention, and an array of positive results, such as modulation of microbiota composition, regulation of metabolism, promotion of the epithelial barrier, and improvement of immune function, have been observed. Herein, we review the state of the art in reproductive system microbiota and its role in health and reproduction, as well as the beneficial effects of probiotics on reproductive health and their contributions to the prevention of associated diseases.

18.
Curr Opin Endocr Metab Res ; 27: 100421, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36643692

RESUMO

Understanding the human hypothalamic-pituitary-gonadal (HPG) axis presents a major challenge for medical science. Dysregulation of the HPG axis is linked to infertility and a thorough understanding of its dynamic behaviour is necessary to both aid diagnosis and to identify the most appropriate hormonal interventions. Here, we review how quantitative models are being used in the context of clinical reproductive endocrinology to: 1. analyse the secretory patterns of reproductive hormones; 2. evaluate the effect of drugs in fertility treatment; 3. aid in the personalization of assisted reproductive technology (ART). In this review, we demonstrate that quantitative models are indispensable tools enabling us to describe the complex dynamic behaviour of the reproductive axis, refine the treatment of fertility disorders, and predict clinical intervention outcomes.

19.
Am J Prev Cardiol ; 10: 100335, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35342890

RESUMO

Risk for atherosclerotic cardiovascular disease (ASCVD) shows considerable heterogeneity both in generally healthy persons and in those with known ASCVD. The foundation of preventive cardiology begins with assessing baseline ASCVD risk using global risk scores based on standard office-based measures. Persons at low risk are generally recommended for lifestyle management only and those at highest risk are recommended for both lifestyle and pharmacologic therapy. Additional "risk enhancing" factors, including both traditional risk factors and novel biomarkers and inflammatory factors can be used to further assess ASCVD risk, especially in those at borderline or intermediate risk. There are also female-specific risk enhancers, social determinants of health, and considerations for high-risk ethnic groups. Screening for subclinical atherosclerosis, especially with the use of coronary calcium screening, can further inform the treatment decision if uncertain based on the above strategies. Persons with pre-existing ASCVD also have variable risk, affected by the number of major ASCVD events, whether recurrent events have occurred recently, and the presence of other major risk factors or high-risk conditions. Current guidelines define high to very high risk ASCVD accordingly. Accurate ASCVD risk assessment is crucial for the appropriate targeting of preventive therapies to reduce ASCVD risk. Finally, the clinician-patient risk discussion focusing on lifestyle management and the risks and benefits of evidence-based pharmacologic therapies to best lower ASCVD risk is central to this process. This clinical practice statement provides the preventive cardiology specialist with guidance and tools for assessment of ASCVD risk with the goal of appropriately targeting treatment approaches for prevention of ASCVD events.

20.
Front Endocrinol (Lausanne) ; 12: 759835, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34737723

RESUMO

Background: Polycystic ovary syndrome (PCOS) is an endocrine disorder that commonly affects women of childbearing age and has been associated with metabolic and reproductive abnormalities. Only a few studies have investigated metabolic traits in women with PCOS in Latin America. Therefore, we conducted a systematic review to provide an overview of the available evidence on the metabolic profile of Latin American women with PCOS. Methods: We searched PubMed, Cochrane Central Register of Controlled Trials, and Embase databases for cross-sectional, case-control, or cohort studies focusing on populations of countries in South and Central America and Mexico, published until October 31, 2019. We selected studies that reported the diagnostic criteria for PCOS. In the absence of a control group, we included studies if they reported relevant metabolic data. Results: The initial search yielded 4878 records, of which 41 studies were included in the systematic review. Sample sizes ranged from 10 to 288 in PCOS groups and from 10 to 1500 in control groups. The prevalence of phenotypes A and B (classic PCOS) ranged from 65.8% to 87.5% as reported in studies from Argentina, Brazil, and Chile. Metabolic syndrome ranged from 33.3% to 44.0% for phenotype A, from 15.0% to 58.0% for phenotype B, from 11.9% to 36.0% for phenotype C, and from 14.2% to 66.0% for phenotype D. Women with PCOS had higher body mass index, waist circumference, blood pressure, glucose, and homeostasis model assessment index as well as a more adverse lipid profile than those without PCOS. Conclusions: Evidence from the present systematic review suggests that anthropometric and metabolic profiles are worse in women with PCOS who live in different Latin American countries than in women without PCOS living in the same region. Additional studies assessing metabolic comorbidities, such as diabetes, and distinct PCOS phenotypes in different Latin American countries are warranted and may produce invaluable information for primary and secondary prevention of PCOS in the region. This systematic review was registered with PROSPERO under number CRD42016038537. Systematic Review Registration: PROSPERO, identifier CRD42016038537.


Assuntos
Síndrome do Ovário Policístico/metabolismo , Feminino , Humanos , América Latina/epidemiologia , Síndrome do Ovário Policístico/epidemiologia
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