Publications by authors named "Bulent O Yıldız"

Purpose: Polycystic ovary syndrome (PCOS) is a very common endocrine, metabolic and reproductive disorder. The underlying pathophysiology is not yet fully understood and both genetic and environmental factors contribute to its development. We aimed to explore clinical and genetic aspects of familial clustering in PCOS, shedding light on its reproductive and metabolic consequences in both male and female first-degree relatives of the affected women.

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Patients with polycystic ovary syndrome (PCOS) often have many questions about nutrition and turn to chatbots such as Chat Generative Pretrained Transformer (ChatGPT) for advice. This study aims to evaluate the reliability, quality, and readability of ChatGPT's responses to nutrition-related questions asked by women with PCOS. Frequently asked nutrition-related questions from women with PCOS were reviewed in both Turkish and English.

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Context: Artificial intelligence (AI) is increasingly utilized in healthcare, with models like ChatGPT and Google Gemini gaining global popularity. Polycystic ovary syndrome (PCOS) is a prevalent condition that requires both lifestyle modifications and medical treatment, highlighting the critical need for effective patient education. This study compares the responses of ChatGPT-4, ChatGPT-3.

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Polycystic ovary syndrome (PCOS) is a heterogeneous familial disorder affecting up to one in five women. The aetiology remains unclear, but available evidence suggests it is a polygenic disorder with epigenetic, developmental, and environmental components. The diagnostic criteria for PCOS are based on reproductive features, and the syndrome is categorized into several phenotypes that can vary by race and ethnicity.

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Article Synopsis
  • PCOS is a common hormonal disorder with diagnostic and management complexities, prompting a study on European endocrinologists' understanding of it.
  • An online survey of 505 endocrinologists revealed that 85% use the Rotterdam criteria for diagnosis, with most patient referrals occurring between ages 20 and 40.
  • The findings highlight the importance of metabolic profiling and lifestyle changes in managing PCOS, along with consensus on using treatments like metformin and oral contraceptives.
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Context: Previous studies have shown that the prevalence of polycystic ovary syndrome (PCOS) may vary according to race/ethnicity, although a few studies have assessed women of different ethnicities who live in similar geographic and socioeconomic conditions.

Objective: To determine the prevalence of PCOS in an unselected multiethnic population of premenopausal women.

Design: A multicenter prospective cross-sectional study.

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EndoBridge 2023 took place on October 20-22, 2023, in Antalya, Turkey. Accredited by the European Council, the 3-day scientific program of the 11 Annual Meeting of EndoBridge included state-of-the-art lectures and interactive small group discussion sessions incorporating interesting and challenging clinical cases led by globally recognized leaders in the field and was well attended by a highly diverse audience. Following its established format over the years, the program provided a comprehensive update across all aspects of endocrinology and metabolism, including topics in pituitary, thyroid, bone, and adrenal disorders, neuroendocrine tumors, diabetes mellitus, obesity, nutrition, and lipid disorders.

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Objective: The potential effects of polycystic ovary syndrome (PCOS) on the musculoskeletal system are not well established. We examined the musculoskeletal system in women with PCOS in their late reproductive years.

Study-design: This cross-sectional study included 34 women with PCOS and 32 control women matched for age and body mass index (BMI).

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Polycystic ovary syndrome (PCOS) is a common endocrine disorder in females. Modest weight loss improves reproductive and metabolic PCOS features. While lifestyle modifications and pharmacotherapies remain first-line weight loss strategies, bariatric surgery is emerging as a potentially effective treatment.

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Article Synopsis
  • - This review and meta-analysis assessed the effectiveness of anti-obesity drugs on various health outcomes in women with polycystic ovary syndrome (PCOS), helping to update PCOS treatment guidelines for 2023.
  • - Eleven clinical trials were analyzed, revealing that most anti-obesity agents led to improvements in weight-related outcomes, with drugs like liraglutide and semaglutide showing stronger results than placebo.
  • - However, the comparative analysis of specific agents showed no significant differences in outcomes between exenatide and metformin, or between orlistat combined with a contraceptive pill and the pill alone, indicating a need for more extensive research on these treatments in PCOS.
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Purpose: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women of reproductive age. We aimed to investigate the prevalence and phenotypic characteristics of PCOS in testosterone treatment-naïve transgender people assigned female at birth (AFAB), as well as to determine whether cardiometabolic risk factors vary based on the presence of PCOS and its components.

Methods: Evaluation of 112 testosterone treatment-naïve transgender adults AFAB for PCOS and its individual components, including androgen excess, ovulatory dysfunction and polycystic ovarian morphology (PCOM).

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Women with polycystic ovary syndrome (PCOS) are at increased risk for dysglycemia and type 2 diabetes compared to healthy BMI-matched women of reproductive age: robust evidence exists supporting this notion. The presence of altered glycemic status in young women with the syndrome presents a distinct challenge for the clinician for several reasons. Firstly, the reported incidence of this disorder varies among the limited available studies.

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Purpose: Polycystic ovary syndrome (PCOS) is associated with alterations in gut microbiota. The cytokine interleukin-22 (IL-22) is produced by immune cells and closely linked to gut immunity, which is tightly controlled by its binding protein (IL-22BP). In this study, we aimed to assess whether IL-22/IL-22BP axis is altered in PCOS at baseline and in response to short-term oral contraceptive (OC) therapy.

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Androgen assessment is a key element for diagnosing polycystic ovary syndrome (PCOS), and defining a "normal" level of circulating androgens is critical for epidemiological studies. We determined the upper normal limits (UNLs) for androgens in a population-based group of premenopausal "healthy control" women, overall and by ethnicity (Caucasian and Asian), in the cross-sectional Eastern Siberia PCOS Epidemiology and Phenotype (ESPEP) Study (ClinicalTrials.gov ID: NCT05194384) conducted in 2016-2019.

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Purpose Of Review: The aim of this review is to understand how anti-Müllerian hormone (AMH) contributes to ovulatory dysfunction in polycystic ovarian syndrome (PCOS).

Recent Findings: In the last few years, new findings have emerged on AMH and its role on the central nervous system causing ovulatory dysfunction.

Summary: Anovulation is a prominent feature of PCOS.

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Article Synopsis
  • The relationship between COVID-19 and the endocrine system has become a significant focus of research, highlighting how conditions like obesity and diabetes increase the severity of COVID-19.
  • Key endocrine organs have been affected by the virus, leading to new endocrine disorders, although the long-term consequences remain unclear.
  • Additionally, pandemic-related "stay home" measures disrupted care for existing endocrine conditions, making it challenging to diagnose and treat new cases, indicating a need for further investigation into these interactions.
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Article Synopsis
  • Polycystic ovary syndrome (PCOS) is a common disorder that affects women's hormonal and metabolic health but has an unclear cause, making symptom management the primary focus of treatment.
  • The text reviews current and emerging drug therapies for women with PCOS who are not trying to get pregnant, based on a literature search that included studies up to January 2022.
  • Due to the diverse symptoms of PCOS, treatments must be personalized for each patient, and a deeper understanding of the disorder's molecular mechanisms could lead to the creation of more effective therapies.
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Purpose: COVID-19 pandemic has far-reaching psychosocial implications for chronic health conditions. We aimed to investigate whether COVID-19 associated social isolation affects lifestyle and weight control in women with polycystic ovary syndrome (PCOS).

Methods: We conducted an online survey involving 232 women with PCOS and 157 healthy controls on weight changes, physical activity, sleep and eating patterns using Three-Factor Eating Questionnaire (TFEQ-18), Pittsburgh Sleep Quality Index (PSQI), and International Physical Activity Questionnaire Short Form (IPAQ-SF).

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The diagnosis of polycystic ovary syndrome (PCOS) remains challenging due to limited data regarding normative cut-offs for the diagnostic features in different subpopulations. We aim to conduct a systematic review, build a comprehensive repository of de-identified individual participant data (IPD), and define normative ranges and diagnostic cut-offs for all PCOS diagnostic features. We will conduct a systematic search of MEDLINE and EMBASE databases for studies that assessed PCOS diagnostic features in unselected women.

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  • Polycystic ovary syndrome (PCOS) is a common endocrine disorder in women that is linked to eating problems, and this study explores how it affects taste function and eating behavior.
  • In comparing 44 women with PCOS to 36 healthy women, it was found that those with PCOS had significantly lower scores for sour and salty tastes, although sweet and bitter tastes were similar between the groups.
  • After a 3-month period of using oral contraceptives, the taste scores remained unchanged in the PCOS group, but they did experience a notable reduction in food cravings, particularly in the lack of control over eating.
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The hypoestrogenic period after menopause and associated metabolic imbalance might facilitate the onset of non-alcoholic fatty liver disease (NAFLD) and its progression. The prevalence of NAFLD increases in patients experiencing premature ovarian insufficiency, as well as surgical or natural menopause. The postmenopausal period is characterized by dyslipidemia and insulin resistance associated with an increased influx of free fatty acids to the liver with consequent steatosis and further progression of NAFLD.

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Article Synopsis
  • Polycystic ovary syndrome (PCOS) is a prevalent hormonal disorder affecting women, linked to higher risks of prediabetes, diabetes, and various health issues, but its long-term effects in aging women remain unclear.
  • * The review indicates that the symptoms of PCOS improve with age, and there's no significant worsening of heart disease risk in postmenopausal women with PCOS compared to those without the condition.
  • * More extensive studies are necessary to better understand the long-term health impacts of PCOS in older women and assess risks for other conditions like sleep apnea and mood disorders.*
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Coronavirus Disease 2019 (COVID-19) is characterized with a wide range of clinical presentations from asymptomatic to severe disease. In patients with severe disease, the main causes of mortality have been acute respiratory distress syndrome, cytokine storm and thrombotic events. Although all factors that may be associated with disease severity are not yet clear, older age remains a leading risk factor.

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Polycystic ovary syndrome (PCOS) is a common endocrine disorder in reproductive-aged women, characterized by hyperandrogenism, oligo/anovulation, and polycystic ovarian morphology. Combined oral contraceptives (COCs), along with lifestyle modifications, represent the first-line medical treatment for the long-term management of PCOS. Containing low doses of estrogen and different types of progestin, COCs restore menstrual cyclicity, improve hyperandrogenism, and provide additional benefits such as reducing the risk of endometrial cancer.

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Synopsis of recent research by authors named "Bulent O Yıldız"

  • - Bulent O Yildiz's recent research focuses on polycystic ovary syndrome (PCOS), investigating its diagnosis, management, epidemiology, and associated health risks in various populations across Europe and specific ethnic groups.
  • - Key findings include the variable prevalence of PCOS concerning ethnicity, the impact of bariatric surgery and anti-obesity pharmacological agents on metabolic and reproductive outcomes, and altered glycemic status in affected women, emphasizing the need for tailored clinical approaches.
  • - Yildiz's studies also explore the effects of PCOS on the musculoskeletal system and the prevalence of biochemical hyperandrogenism across different ethnicities, contributing significantly to the understanding of this complex endocrine disorder.