Publications by authors named "Piltonen T"

Objective: To investigate whether increased prevalence of type 2 diabetes (T2DM) in women with polycystic ovary syndrome (PCOS) translates into increased risk of diabetic complications.

Design: A cohort study based on the nationwide Diabetes in Finland database. The main analysis included 1288 women with PCOS and T2DM and 177 555 women with T2DM without PCOS (controls).

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Introduction And Hypothesis: Overactive bladder (OAB) affects 11-17% of the female population. First-line treatment with lifestyle modifications and second-line therapy with medications are often limited by inadequate efficacy or pharmacological side effects. This study was aimed at assessing the effect of 100 U onabotulinumtoxin A treatment on idiopathic OAB (iOAB) as a second-line treatment.

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Objective: To study ferritin levels, and potential factors influencing them, in women with polycystic ovary syndrome (PCOS) and investigate potential associations between ferritin levels and other parameters in these women.

Design: Longitudinal general population-based cohort study, including data from both questionnaires and clinical measurements.

Subjects: The study was conducted with data from the participants of the Women's Health Study, including a total of 1,918 Finnish women aged approximately 35 years.

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Study Question: Do polycystic ovary syndrome (PCOS), menstrual cycle phases, and ovulatory status affect reproductive tract (RT) microbiome profiles?

Summary Answer: We identified microbial features associated with menstrual cycle phases in the upper and lower RT microbiome, but only two specific differences in the upper RT according to PCOS status.

What Is Known Already: The vaginal and uterine microbiome profiles vary throughout the menstrual cycle. Studies have reported alterations in the vaginal microbiome among women diagnosed with PCOS.

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Introduction: Within normal variation, higher hemoglobin (Hb) levels are associated with poorer metabolic profile in population cohorts, underlying the link between oxygen delivery and cell metabolism. Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women and is commonly accompanied by metabolic derangements. In this study we sought to investigate Hb levels, and their metabolic associations, in women with PCOS.

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(1) Background: Endometriosis is a highly prevalent gynecological disease affecting 10% of women of reproductive age worldwide. miRNAs may play a role in endometriosis, though their exact function remains unclear. This study aimed to identify differentially expressed miRNAs in endometriosis and study their functions in the disease.

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Introduction: Circadian rhythm disruption has been associated with the risk of polycystic ovary syndrome (PCOS), as the evening chronotype (EC) shares several traits with PCOS, including metabolic disorders, cardiovascular diseases, and psychiatric disorders. It has been suggested that the biological clock could be targeted with new, preventive, and therapeutic strategies for PCOS in women with biorhythm disorders. We evaluated inner circadian rhythmicity in middle-aged women with PCOS in a population-based setting, focusing on whether women with PCOS and an EC have a specific subtype in relation to their clinical characteristics.

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Article Synopsis
  • The study investigates how different movement behaviors (like physical activity and sedentary time) affect cardiometabolic health in women with and without polycystic ovary syndrome (PCOS).
  • It found no overall differences in daily movement patterns between the groups, but reducing sedentary behavior (SB) while increasing moderate-to-vigorous physical activity (MVPA) improved health markers for women without PCOS, while women with PCOS only showed benefits from substituting SB with MVPA.
  • The research involved a large cohort study from Northern Finland, analyzing data from 5889 women with follow-ups at ages 31 and 46, focusing on physical activity levels and cardiometabolic health indicators.
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Article Synopsis
  • The study aimed to investigate the link between premenopausal hyperandrogenaemia (HA) and the risk of hypertension and cardiovascular diseases (CVDs) in a cohort of 5,889 women.
  • The findings showed that higher levels of testosterone and free androgen index were linked to increased blood pressure and a higher likelihood of hypertension at ages 31 and 46, as well as an increased risk of CVD events over 22 years, particularly before adjusting for body mass index (BMI).
  • Despite the initial associations, the significance of the results diminished when accounting for BMI, highlighting the need for further research with a more diverse population and longer follow-up to better understand these relationships.*
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Objective: To investigate eating behavior domains-emotional, uncontrolled, and cognitive restraint eating-in women with polycystic ovary syndrome (PCOS) with different PCOS phenotypes and women without PCOS at midlife.

Design: A prospective cohort study. Eating behavior domains were assessed at age of 46 years.

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Article Synopsis
  • The 2024 Australian evidence-based guideline offers recommendations for diagnosing and treating unexplained infertility in couples, tailored specifically for the Australian healthcare context and approved by national health authorities.
  • The guideline contains 40 evidence-based recommendations, addressing areas such as defining infertility, diagnosing various factors contributing to infertility, and treatment options, with a focus on improving patient care.
  • Key updates include a refined definition of unexplained infertility and a more comprehensive assessment process, integrating considerations of evidence quality, safety, and practicality for implementing these guidelines in Australia.
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Pericytes are versatile cells integral to the blood vessel walls of the microcirculation, where they exhibit specific stem cell traits. They are essential in modulating blood flow, ensuring vascular permeability, and maintaining homeostasis and are involved in the tissue repair process. The human endometrium is a unique and complex tissue that serves as a natural scar-free healing model with its cyclical repair and regeneration process every month.

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Polycystic ovary syndrome (PCOS) is a highly prevalent disorder in women that is commonly accompanied by metabolic syndrome. Activation of the hypoxia-inducible factor (HIF) pathway is known to alleviate metabolic defects. Hence, this study utilized a preclinical PCOS mouse model to investigate the effects of chemically induced HIF activation on the metabolic traits of PCOS.

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Stanniocalcin (STC) 1 and 2 serve as antihyperglycemic polypeptide hormones with critical roles in regulating calcium and phosphate homeostasis. They additionally function as paracrine and/or autocrine factors involved in numerous physiological processes, including female reproduction. STC1 and STC2 contribute to the pathophysiology of several diseases, including female infertility- and pregnancy-associated conditions, and even tumorigenesis of reproductive organs.

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It is not controversial to state that parental age is increasing in several countries. But how to deal with this increase might be. Some Nordic countries have set an upper age limit for females seeking assisted reproduction in their national legislation, but none have done so for males.

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The Women's Health Study (WENDY) was conducted to improve insights into women's health and health burden. It provides a unique, comprehensive data source that can be broadly utilized to understand gynecological symptoms, diseases, and their relation to metabolic and overall health more deeply in a population-based setting. The study was conducted in Finland from May 2020 to October 2022.

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Phthalates are endocrine disrupting chemicals (EDCs) found in common consumer products such as soft plastics and cosmetics. Although the knowledge regarding the adverse effects of phthalates on female fertility are accumulating, information on the hormone sensitive endometrium is still scarce. Here, we studied the effects of phthalates on endometrial cell proliferation and gene expression.

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Article Synopsis
  • The study reviews whether polycystic ovary syndrome (PCOS) affects birth outcomes for the children of women with the condition by analyzing data from 73 studies involving nearly 93,000 offspring.
  • It finds that mothers with PCOS tend to be younger, have a higher body mass index (BMI), and experience greater weight gain during pregnancy, which may influence birth outcomes.
  • The study concludes that PCOS is linked to higher risks of preterm birth, fetal growth issues, and lower birth weights, suggesting the need to consider PCOS status during pregnancy to improve outcomes for affected offspring.*
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Article Synopsis
  • * Factors like younger age and higher body mass index (BMI) contribute to these complications, but even when accounting for age and BMI, PCOS still poses significant risks.
  • * The findings support the need for PCOS screening in antenatal care, as highlighted in the 2023 guidelines, aiming to improve outcomes for women planning to become pregnant or who are already pregnant.
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The beneficial effects of physical activity (PA) on gut microbiome have been reported, nevertheless the findings are inconsistent, with the main limitation of subjective methods for assessing PA. It is well accepted that using an objective assessment of PA reduces the measurement error and also allows objective assessment of sedentary behavior (SB). We aimed to study the associations between accelerometer-assessed behaviors (i.

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