4,417 results match your criteria Anovulation


Metabolic and Molecular Mechanisms of Diet and Physical Exercise in the Management of Polycystic Ovarian Syndrome.

Biomedicines 2022 Jun 2;10(6). Epub 2022 Jun 2.

Division of Gynecology and Obstetrics, Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy.

Polycystic ovary syndrome (PCOS) is an endocrine systemic disorder mainly characterized by a hormonal and metabolic disbalance that leads to oligo/anovulation, hyperandrogenism and the formation of ovarian cysts. Despite the progress that has been reached in its diagnosis and management, little is known about the molecular mechanisms and signaling pathways underlying the pathogenic mechanisms. In this sense, recent research has suggested that the influence of multiple factors, including age, environment, lifestyle and the disease state environment can change the clinical presentation of PCOS via epigenetic modifications. Read More

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The Reproductive Outcome of Women with Hypogonadotropic Hypogonadism in IVF.

Front Endocrinol (Lausanne) 2022 6;13:850126. Epub 2022 Jun 6.

Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing, China.

Objective: The purpose of this study was to evaluate the reproductive outcome of patients with hypogonadotropic hypogonadism (HH) receiving fertilization and embryo transfer (IVF-ET).

Methods: The reproductive outcome of 81 HH patients and 112 controls who underwent oocyte retrieval was evaluated retrospectively in the Center for Reproductive Medicine of Peking University Third Hospital from 2010 to 2019.

Results: The basic levels of follicle stimulating hormone (FSH), luteinizing hormone (LH), estradiol (E2), androstenedione (A) and prolactin (PRL) were significantly lower in the HH group than the control group. Read More

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Irisin reduces the abnormal reproductive and metabolic phenotypes of PCOS by regulating the activity of brown adipose tissue in mice.

Biol Reprod 2022 Jun 17. Epub 2022 Jun 17.

Department of Obstetrics and Gynecology, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, China.

Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disease in women, with clinical manifestations of anovulation and hyperandrogenaemia. The treatment of PCOS mainly focuses on improving clinical symptoms, such as insulin sensitivity or menstrual disorder, through drug treatment. However, due to the pathogenesis diversity of PCOS, there is still a lack of effective treatment in clinics. Read More

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Endogenous Cushing's syndrome during pregnancy.

Rev Endocr Metab Disord 2022 Jun 7. Epub 2022 Jun 7.

Division of Endocrinology, Department of Medicine Research Center, Centre hospitalier de l'Université de Montréal (CHUM), CHUM 900 Saint-Denis Street, H2X 0A9, Montréal, Québec, Canada.

Endogenous Cushing's syndrome (CS) is rare during pregnancy, probably because hypercortisolism induces anovulation and infertility. To date, slightly above 200 cases have been reported in the literature. The most frequent etiology of CS diagnosed during gestation is from primary adrenal causes, namely adrenal adenomas and an entity called pregnancy-induced CS. Read More

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Changes in the prevalence of polycystic ovary syndrome in China over the past decade.

Lancet Reg Health West Pac 2022 Aug 31;25:100494. Epub 2022 May 31.

Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Beijing 100191, China.

Background: Polycystic ovary syndrome (PCOS) has become a major international public health concern. However, because of controversy about the diagnostic criteria and patient selection, estimates of its absolute prevalence and change with time vary greatly.

Methods: We conducted two consecutive nationwide epidemiological surveys of the prevalence of PCOS in representative samples of reproductive-aged women in China in 2010 and 2020. Read More

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Influence of ovarian follicular wave synchronization and single-dose eCG superstimulation on oocyte collection and in vitro embryo production in bison during the ovulatory and anovulatory seasons.

Theriogenology 2022 Jul 6;187:238-246. Epub 2022 May 6.

Department of Veterinary Biomedical Sciences, Western College of Veterinary Medicine, University of Saskatchewan, 52 Campus Drive, Saskatoon, Saskatchewan, S7N 5B4, Canada. Electronic address:

In an effort to develop an effective, minimum-handling protocol for the conservation of wood bison, the present study was designed to determine the effects of ovarian synchronization and superstimulation on cumulus oocyte complex (COC) collection and in vitro embryo production in wood bison during the ovulatory (Exp. 1) and anovulatory seasons (Exp. 2). Read More

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Should any use of artificial cycle regimen for frozen-thawed embryo transfer in women capable of ovulation be abandoned: yes, but what's next for FET cycle practice and research?

Hum Reprod 2022 May 28. Epub 2022 May 28.

Department of Gynecological Endocrinology and Reproductive Medicine, University Hospital of Schleswig-Holstein, Lübeck, Germany.

Over the past decade, the use of frozen-thawed embryo transfer (FET) treatment cycles has increased substantially. The artificial ('programmed') cycle regimen, which suppresses ovulation, is widely used for that purpose, also in ovulatory women or women capable of ovulation, under the assumption of equivalent efficacy in terms of pregnancy achievement as compared to a natural cycle or modified natural cycle. The advantage of the artificial cycle is the easy alignment of the time point of thawing and transferring embryos with organizational necessities of the IVF laboratory, the treating doctors and the patient. Read More

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Changes of Serum Level of Homocysteine and Oxidative Stress Markers by Metformin and Inositol in Infertile Women with Polycystic Ovary Syndrome: A Double Blind Randomized Clinical Trial Study.

Int J Fertil Steril 2022 Apr 8;16(2):102-107. Epub 2022 May 8.

Department of Histology, School of Medicine, Research and Clinical Center for Infertility, Dezful University of Medical Sciences, Dezful, Iran. Email:

Background: Hyperhomocysteinemia plays an important role in the anovulation in infertile women suffering from polycystic ovary syndrome (PCOS). However, long-term metformin therapy elevated homocysteine (Hcy) concentration in these individuals. Inositol increases serum insulin levels and improves ovulation. Read More

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Evaluation and management of abnormal uterine bleeding.

Authors:
K S Achanna J Nanda

Med J Malaysia 2022 05;77(3):374-383

Mahsa University, Jalan SP2, Bandar Saujana Putra, Jenjarom, Kuala Langat, Selangor, Malaysia.

Abnormal uterine bleeding (AUB) is one of the commonest complaints of women in reproductive age and non-gravid state that brings them to the attention of the primary care doctor or the gynaecologist. Anovulation without any medical illness or pelvic pathology seems to be the common cause. Bleeding due to a wide variation in pathology both inside and outside the reproductive tract can be termed as anovulatory bleeding. Read More

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Prediction model of persistent ovulatory dysfunction in Korean women with polycystic ovary syndrome.

J Obstet Gynaecol Res 2022 May 23. Epub 2022 May 23.

Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, South Korea.

Aim: There is no validated tool to predict persistent ovulatory dysfunction after medication with oral contraceptives in women with polycystic ovary syndrome (PCOS), which is the most severe subtype of PCOS. We aimed to build a model to predict persistent ovulatory dysfunction after medication of oral contraceptives in women with PCOS.

Methods: A total of 286 patients with PCOS were treated with and without oral contraceptives at a tertiary academic medical center. Read More

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A Systematic Review and Meta-Analysis of the Association Between Polycystic Ovary Syndrome and Coronary Artery Calcification.

J Womens Health (Larchmt) 2022 Jun 16;31(6):762-771. Epub 2022 May 16.

Ciccarone Center for the Prevention of Cardiovascular Disease, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA.

Polycystic ovary syndrome (PCOS) is a common endocrine pathology affecting women of reproductive age characterized by chronic anovulation, hyperandrogenism, and polycystic ovaries. Coronary artery calcification (CAC) is a marker of subclinical atherosclerosis and prognostic of cardiovascular disease (CVD) risk. Some studies have shown that women with PCOS have a greater risk of CAC; however, a few others report contrary findings. Read More

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'I'm usually being my own doctor': women's experiences of managing polycystic ovary syndrome in Canada.

Int Health 2022 May 14. Epub 2022 May 14.

University of Parakou, Faculty of Medicine, Parakou, Benin.

Background: Polycystic ovary syndrome (PCOS) is a complex, chronic condition characterized by anovulation, polycystic ovarian morphology and hyperandrogenism that requires lifelong management. To reduce the risk of comorbidity and to manage symptoms, lifestyle management and pharmaceuticals such as oral contraceptives are the most common forms of treatment and should be tailored to the individual patient. The literature to date has shown PCOS patients to experience widespread dissatisfaction with the amount and quality of information they receive from providers, along with lower levels of trust in physicians. Read More

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The prevalence and phenotypic manifestations of polycystic ovary syndrome (PCOS) among infertile Sudanese women: a cross-sectional study.

BMC Womens Health 2022 05 13;22(1):165. Epub 2022 May 13.

Department of Obstetrics and Gynecology, Unaizah College of Medicine and Medical Sciences, Qassim University, Unaizah, 56219, Saudi Arabia.

Background: Polycystic ovary syndrome (PCOS) is a global health problem associated with significant morbidity during reproductive age. Only a few published studies that address the clinical manifestations and phenotypic presentation of the disease have been conducted in Africa, including Sudan. Thus, this study aimed to evaluate the clinical and biochemical presentation of the different PCOS phenotypes among infertile Sudanese women. Read More

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Artificial intelligence deep learning model assessment of leukocyte counts and proliferation in endometrium from women with and without polycystic ovary syndrome.

F S Sci 2022 05 22;3(2):174-186. Epub 2022 Jan 22.

Department of Obstetrics and Gynecology, PEDEGO Research Unit, Medical Research Center, Oulu University Hospital, University of Oulu, Oulu, Finland. Electronic address:

Objective: To study whether artificial intelligence (AI) technology can be used to discern quantitative differences in endometrial immune cells between cycle phases and between samples from women with polycystic ovary syndrome (PCOS) and non-PCOS controls. Only a few studies have analyzed endometrial histology using AI technology, and especially, studies of the PCOS endometrium are lacking, partly because of the technically challenging analysis and unavailability of well-phenotyped samples. Novel AI technologies can overcome this problem. Read More

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Reversibility of testosterone-induced acyclicity after testosterone cessation in a transgender mouse model.

F S Sci 2021 05 4;2(2):116-123. Epub 2021 Feb 4.

Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan, USA; Division of Reproductive Endocrinology and Infertility, University of Michigan, Ann Arbor, Michigan, USA; Department of Urology, University of Michigan, Ann Arbor, Michigan, USA. Electronic address:

Objective: To establish if the cessation of testosterone (T) therapy reverses T-induced acyclicity in a transgender mouse model that allows for well-defined T cessation timing.

Design: Experimental laboratory study using a mouse model.

Setting: University-based basic science research laboratory. Read More

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Molecular signature of immunological mechanism behind impaired endometrial receptivity in polycystic ovarian syndrome.

Arch Endocrinol Metab 2022 May 12. Epub 2022 May 12.

Department of Endocrinology and Female Infertility at Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran,

Objective: Despite the treatment of anovulation, infertility is still one of the main complications in PCOS women during reproductive age, which appears to be mainly due to impaired uterine receptivity. This study investigated the transcriptome profiles of endometrium in PCOS patients and healthy fertile individuals as the control group.

Methods: Total mRNA was extracted from endometrial tissues of PCOS patients (n = 12) and healthy fertile individuals (n = 10) during the luteal phase. Read More

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Vitamin D deficiency and female infertility: A mechanism review examining the role of vitamin D in ovulatory dysfunction as a symptom of polycystic ovary syndrome.

J Reprod Immunol 2022 06 28;151:103633. Epub 2022 Apr 28.

Centre for Nutrition Education and Lifestyle Management, Chapel Gardens, 14 Rectory Road, Wokingham RG40 1DH, England, UK.

Around one billion people worldwide are understood to have sub-optimal levels of vitamin D. Polycystic ovary syndrome (PCOS) is reportedly a primary reason for female infertility. The main objective of this research was to understand the mechanistic role of vitamin D in the pathogenesis of female infertility in PCOS, specifically in relation to ovarian follicle development. Read More

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Endokrin kórképek előfordulása és társulása in vitro fertilizációs programban részt vevő nők körében.

Orv Hetil 2022 May 1;163(18):712-719. Epub 2022 May 1.

2 Debreceni Egyetem, Általános Orvostudományi Kar, Szülészeti és Nőgyógyászati Intézet Debrecen, Egyetem tér 1., 4032 Magyarország.

Összefoglaló. Bevezetés: Az endokrin betegségekhez társuló ovulációs diszfunkció gyakori vezető vagy társuló oka a női infertilitásnak, de optimális reprodukciós korban oki vagy ovulációindukciós kezeléssel többnyire rendezhető a fertilitás. Az in vitro fertilizációs (IVF-) kezelések vezető indikációi jelenleg az andrológiai és a női életkorból adódó, petefészek-eredetű infertilitás, de egyéb endokrin diszfunkció társulása befolyásolja a kezelési eredményeket. Read More

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Controversies in the Pathogenesis, Diagnosis and Treatment of PCOS: Focus on Insulin Resistance, Inflammation, and Hyperandrogenism.

Int J Mol Sci 2022 Apr 8;23(8). Epub 2022 Apr 8.

Department of Medicine-Endocrinology, University of Padua, 35100 Padua, Italy.

Polycystic ovary syndrome (PCOS) is a heterogeneous and extremely common disease with symptoms that vary with the age of the patient, typically characterized by hyperandrogenism, chronic oligo-anovulation, and/or several metabolic disorders. The syndrome includes various phenotypes, and the pathogenesis is multifactorial, often involving insulin resistance. This feature is closely related to ovarian dysfunction, inflammation, hyperandrogenism, and metabolic disorders, which characterize and complicate the syndrome. Read More

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Transcriptomic landscape of granulosa cells and peripheral blood mononuclear cells in women with PCOS compared to young poor responders and women with normal response.

Hum Reprod 2022 05;37(6):1274-1286

Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA.

Study Question: Are transcriptomic profiles altered in ovarian granulosa cells (GCs) and peripheral blood mononuclear cells (PBMNCs) of women with polycystic ovary syndrome (PCOS) compared to young poor responders (YPR) and women with normal response to ovarian stimulation?

Summary Answer: RNA expression profiles in ovarian GCs and PBMNCs were significantly altered in patients with PCOS compared with normoresponder controls (CONT) and YPR.

What Is Known Already: PCOS is characterised by a higher number of follicles at all developmental stages. During controlled ovarian hyperstimulation, PCOS women develop a larger number of follicles as a result of an exacerbated response, with an increased risk of ovarian hyperstimulation syndrome. Read More

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Immune regulation in polycystic ovary syndrome.

Clin Chim Acta 2022 Jun 18;531:265-272. Epub 2022 Apr 18.

Department of Central Laboratory, Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Beijing Maternal and Child Health Care Hospital. Beijing 100026, China. Electronic address:

A polycystic ovarian syndrome (PCOS) is the most common endocrine disorder affecting females. Furthermore, it is a heterogeneous disease with a variety of etiologies and outcomes. Patients frequently complain about infertility, irregular menstruation, acne, seborrheic dermatitis, hirsutism, and obesity. Read More

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Female Pelvic Conditions: Polycystic Ovary Syndrome.

FP Essent 2022 04;515:26-31

Department of Family Medicine - University of California San Diego School of Medicine, 402 Dickinson St, San Diego, CA 92103.

It is estimated that polycystic ovary syndrome (PCOS) affects about 10% of women of reproductive age in the United States. Principal risk factors include obesity and a family history of PCOS. A diagnosis of PCOS should be considered in women with irregular or absent menstrual cycles, issues related to hyperandrogenism, or infertility. Read More

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Current pharmacotherapy and future directions for neuroendocrine causes of female infertility.

Expert Opin Pharmacother 2022 May 10:1-11. Epub 2022 May 10.

Section of Endocrinology and Investigative Medicine, Imperial College London Hammersmith Hospital, London, UK.

Introduction: Infertility is recognized as a major global health issue, often associated with significant psychological distress for affected couples. Causes of female infertility include endocrine conditions leading to oligo/anovulation, in addition to structural causes such as tubal, uterine, or peritoneal disorders. Pharmacological treatments, targeting pathways in the hypothalamic-pituitary-ovarian axis, can improve rates of ovulation, conception, pregnancy, and birth. Read More

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Pilot study on evaluation and determination of the prevalence of Polycystic Ovarian Syndrome (PCOS) associated gene markers in the South Indian population.

Indian J Endocrinol Metab 2021 Nov-Dec;25(6):551-558. Epub 2022 Feb 17.

Department of Molecular Genetics, Alpha Health Foundation, Madurai, Tamil Nadu, India.

Background: Polycystic ovarian syndrome (PCOS) is typically characterized by a spectrum of manifestations that include menstrual irregularities, anovulation, cysts, hyperandrogenic features like hirsutism, acne, alopecia, and various metabolic complications. The pathology of PCOS is complex and several mechanisms have been potentially involved in the genetic abnormalities/dysfunctions. Hence, the present study aims to examine the prevalence and association of polymorphisms in candidate genes (thyroid adenoma-associated gene [THADA], luteinizing hormone and human chorionic gonadotropin receptor [LHCGR], DENN domain containing 1A [DENND1A], follicle-stimulating hormone receptor [FSHR], Connexin37 [CX37], angiotensin-converting enzyme [ACE], insulin receptor [INSR] and calpain 10 [CAPN10]) in PCOS patients of the South Indian regional population. Read More

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February 2022

The influence of ethnicity on outcomes of ovulation induction with clomifene citrate in women with PCOS.

Reprod Biomed Online 2022 05 26;44(5):874-880. Epub 2021 Dec 26.

Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynaecology, Erasmus University Medical Center, Rotterdam, The Netherlands.

Research Question: What is the influence of ethnicity on the outcome of ovulation induction with clomifene citrate in women with polycystic ovary syndrome (PCOS)?

Design: This was a retrospective cohort study. In total, 420 women diagnosed with PCOS who were of Northern European, Mediterranean, African, South-East Asian or South American descent, and who started ovulation induction treatment with clomifene citrate, were included. All women were treated with clomifene citrate according to a standardized treatment regimen. Read More

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A Case-Control Study of the Luteinizing Hormone Level in Luteinizing Hormone Receptor Gene (rs2293275) Polymorphism in Polycystic Ovarian Syndrome Females.

Public Health Genomics 2022 Mar 29:1-9. Epub 2022 Mar 29.

Applied Medical Sciences, The Hashemite University, Zarqa, Jordan.

Background: Polycystic ovary syndrome (PCOS) is a common heterogeneous disorder characterized by chronic anovulation, infertility, polycystic ovaries, and hyperandrogenic signs.

Objective: The aim of this study was to determine the association of luteinizing hormone/chorionic gonadotropin hormone receptor LHCGR polymorphism (rs2293275) with oligomenorrhea, amenorrhea, hirsutism, acne, infertility, LH, LH/FSH ratio, and body mass index (BMI) among PCOS females.

Methods: This genetic case-control study recruited 55 PCOS and 55 control females, diagnosed based on the Rotterdam criteria. Read More

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Impaired steroid hormone feedback in polycystic ovary syndrome: Evidence from preclinical models for abnormalities within central circuits controlling fertility.

Authors:
Aleisha M Moore

Clin Endocrinol (Oxf) 2022 Mar 29. Epub 2022 Mar 29.

Department of Biological Sciences, Brain Health Research Institute, Kent State University, Kent, Ohio, USA.

Polycystic ovary syndrome (PCOS) is the most common endocrinopathy and cause of infertility in women of reproductive age worldwide. Despite diagnostic features of anovulation, polycystic ovarian morphology, and high androgen secretion indicating the syndrome are the result of ovarian dysfunction, alterations to central neuroendocrine circuits that control reproductive capacity may drive PCOS symptoms. Resistance of gonadotrophin-releasing hormone (GnRH) neurons in the hypothalamus to inhibition by sex steroid hormone-negative feedback leads to a rapid frequency of pulsatile gonadotrophin secretion, which, in turn, drives the ovarian features of the disease. Read More

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Association of maternal polycystic ovary syndrome and diabetes with preterm birth and offspring birth size: a population-based cohort study.

Hum Reprod 2022 05;37(6):1311-1323

Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm, Sweden.

Study Question: Is the presence of polycystic ovary syndrome (PCOS) associated with more adverse infant outcomes in mothers with different types of diabetes?

Summary Answer: The presence of PCOS implies higher risks of total (medically indicated and spontaneously combined) and spontaneous preterm birth in mothers with non-insulin-treated type 2 diabetes and gestational diabetes mellitus (GDM), and lower risk of offspring being large for gestational age (LGA) in mothers with insulin-treated diabetes.

What Is Known Already: PCOS is suggested to be an independent risk factor for adverse infant outcomes, and it is highly prevalent in mothers with diabetes. However, the impact of PCOS on the associations of different types of maternal diabetes with preterm birth and offspring birth sizes has not been reported. Read More

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Polycystic Ovarian Syndrome: A Complex Disease with a Genetics Approach.

Biomedicines 2022 Feb 24;10(3). Epub 2022 Feb 24.

Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia.

Polycystic ovarian syndrome (PCOS) is a complex endocrine disorder affecting females in their reproductive age. The early diagnosis of PCOS is complicated and complex due to overlapping symptoms of this disease. The most accepted diagnostic approach today is the Rotterdam Consensus (2003), which supports the positive diagnosis of PCOS when patients present two out of the following three symptoms: biochemical and clinical signs of hyperandrogenism, oligo, and anovulation, also polycystic ovarian morphology on sonography. Read More

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February 2022

Successful pregnancy and delivery after a vitrified-warmed embryo transfer in a woman with Kallmann syndrome: A case report and literature review.

Fukushima J Med Sci 2022 Apr 19;68(1):49-55. Epub 2022 Mar 19.

Department of Obstetrics and Gynecology, Fukushima Medical University School of Medicine.

Kallmann syndrome, a congenital disorder of idiopathic hypogonadotropic hypogonadism associated with anosmia, results in infertility because of anovulation. Assisted reproductive technology (ART) is considered when optimal ovulation induction therapy is difficult or when several cycles of ovulation induction therapy do not result in pregnancy. However, evidence is lacking regarding the optimal ART treatment for Kallmann syndrome. Read More

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