Search results for "Ovary"
showing 10 items of 341 documents
Predictive factors of polycystic ovary syndrome in girls with precocious pubarche
2021
Objective: The aim of this study is to clarify, in girls with premature pubarche (PP), the influence of premature androgenization on the prevalence of polycystic ovary syndrome (PCOS). Design and patients: Ninety-nine PP girls, 63 who developed PCOS and 36 who did not develop PCOS, were retrospectively included. Clinical, anthropometric, and metabolic parameters were evaluated at the time of diagnosis of PP and after 10 years from menarche to find predictive factors of PCOS. Results: Young females with PP showed a PCOS prevalence of 64% and showed a higher prevalence of familial history of diabetes (P = 0.004) and a lower prevalence of underweight (P = 0.025) than PP-NO-PCOS. In addition, g…
Vitellogenesis inhibition in Oncopeltus fasciatus females (Heteroptera: Lygaeidae) exposed to cadmium
2005
Abstract Newly moulted females of the insect Oncopeltus fasciatus were exposed to cadmium (Cd) dissolved in the drinking water (50–400 mg l −1 Cd) for 5 days. Cd exposure delayed ovarian maturation and inhibited egg production. Exposure to Cd, moreover, decreased hemolymph levels of the two major vitellogenin polypeptides of O. fasciatus , VG1 and VG2, in a concentration-dependent way, probably by a reduction in their synthesis. The ovarian levels of VG1 and VG2 were also decreased in Cd-exposed females. It was next investigated whether Cd effects might be a consequence of the endocrine disruption of vitellogenin synthesis, which is controlled by juvenile hormone (JH). JH replacement therap…
Fat Distribution and Adipose Products in Polycystic Ovary Syndrome
2007
Because adipose tissue is a complex endocrine organ that secretes many substances with profound effects on metabolism and the cardiovascular (CV) system, most obese subjects have an increased CV risk. However, 20% of obese subjects are metabolically healthy, and many studies suggest that fat distribution, in particular abdominal fat excess, is the most important factor that determines a secretion of adipose products that may increase CV risk.
Pathogenesis and treatment of hirsutism in late-onset congenital adrenal hyperplasia
1995
Late-onset or nonclassic hyperandrogenic congenital adrenal hyperplasia (CAH) is an attenuated deficiency of 21-hydroxylase, 3β-ol-hydroxysteroid dehydrogenase or 11β-hydroxylase which presents during childhood or adolescence and leads to an increased secretion of adrenal androgens. Many reviews of the genetic or hormonal characteristics of these syndromes have been published, but relatively little attention has been paid to the pathogenesis and treatment of hirsutism which, in most young women, is the main complaint. In fact, it is generally assumed that the hirsutism is strictly related to the increased secretion of adrenal androgens and that glucocorticoids are the treatment of choice. H…
Menopause: The Concepts and the Biological Background
2017
The exhaustion of the follicular endowment in the ovary defines the biological basis of menopause. The clinical implications are the loss of menses and fertility. Menopause is preceded by a series of clinical phases, reflected in the Staging of Reproductive Aging Workshop (STRAW). STRAW includes the different reproductive stages, with the clinically impacting menopausal transition and the end of the reproductive life, represented by the late post-menopausal period. Epidemiological studies show that the age at menopause, globally considered at around 50 years, undergoes significant differences across the world regions. High socio-economic conditions may prolong the age at menopause, but othe…
Relative Prevalence of Different Androgen Excess Disorders in 950 Women Referred because of Clinical Hyperandrogenism
2006
Context: We undertook this study to estimate the prevalence of the various androgen excess disorders using the new criteria suggested for the diagnosis of polycystic ovary syndrome (PCOS). Setting: The study was performed at two endocrine departments at the University of Palermo (Palermo, Italy). Patients: The records of all patients referred between 1980 and 2004 for evaluation of clinical hyperandrogenism were reevaluated. All past diagnoses were reviewed using the actual diagnostic criteria. To be included in this study, the records of the patients had to present the following available data: clinical evaluation of hyperandrogenism, body weight and height, testosterone (T), free T, dehyd…
Obesity, Adipokines and Metabolic Syndrome in Polycystic Ovary Syndrome
2012
The complex mechanisms linking fat excess to metabolic syndrome are not well understood, but several experimental studies have shown that altered production of adipokines plays a main role in development and progression of this disorder. In particular, reduced secretion of adiponectin has a crucial role in inducing insulin resistance but also in determining the clustering of elevated triglycerides and small, dense LDL particles. Increased leptin secretion may be responsible for sympathetic nervous system overactivity and hypertension, while reduced omentin may have an important permissive role in the development of atherogenic processes. Finally, cytokines and other adipokines (resistin, vi…
Glutathione, GlutathioneS-Transferase α and π, and Aldehyde Dehydrogenase Content in Relationship to Drug Resistance in Ovarian Cancer
1997
Glutathione, glutathione S-transferases alpha and pi, and aldehyde dehydrogenase are associated with resistance to carboplatin and/or cyclophosphamide in cell lines. Therefore, we examined whether the expression of these factors in ovarian cancer tissue specimens is associated with resistance of the patients to combination chemotherapy with cyclophosphamide/carboplatin. Ovarian cancer tissue specimens were taken intraoperatively from 139 patients and frozen in liquid nitrogen, and the contents of glutathione S-transferases alpha and pi, total glutathione, and aldehyde dehydrogenase activity were determined. No association between the levels of glutathione S-transferases alpha and pi or alde…
Assessment of Cardiovascular Risk and Prevention of Cardiovascular Disease in Women with the Polycystic Ovary Syndrome: A Consensus Statement by the …
2010
Women with polycystic ovary syndrome (PCOS) often have cardiovascular disease (CVD) risk factors. The Androgen Excess and Polycystic Ovary Syndrome (AE-PCOS) Society created a panel to provide evidence-based reviews of studies assessing PCOS-CVD risk relationships and to develop guidelines for preventing CVD.An expert panel in PCOS and CVD reviewed literature and presented recommendations.Only studies comparing PCOS with control patients were included. All electronic databases were searched; reviews included individual studies/databases, systematic reviews, abstracts, and expert data. Articles were excluded if other hyperandrogenic disorders were not excluded, PCOS diagnosis was unclear, co…
Insulin resistance and polycystic ovary syndrome.
2008
Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders in humans, affecting approximately 7-8% of women of reproductive age. Despite the criteria adopted, PCOS is considered to be a predominantly hyperandrogenetic syndrome and the evaluation of metabolic parameters and insulin sensitivity is not mandatory. Most women with PCOS also exhibit features of the metabolic syndrome, including insulin resistance, obesity and dyslipidaemia. While the association with type 2 diabetes is well established, whether the incidence of cardiovascular disease is increased in women with PCOS remains unclear. Acknowledging the strong impact of insulin-resistance in the genesis of PCOS co…