Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 21
Filtrar
Más filtros

Medicinas Complementárias
Bases de datos
Tipo del documento
Intervalo de año de publicación
1.
Biomol Concepts ; 15(1)2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-38242137

RESUMEN

In the past two decades, oxidative stress (OS) has drawn a lot of interest due to the revelation that individuals with many persistent disorders including diabetes, polycystic ovarian syndrome (PCOS), cardiovascular, and other disorders often have aberrant oxidation statuses. OS has a close interplay with PCOS features such as insulin resistance, hyperandrogenism, and chronic inflammation; there is a belief that OS might contribute to the development of PCOS. PCOS is currently recognized as not only one of the most prevalent endocrine disorders but also a significant contributor to female infertility, affecting a considerable proportion of women globally. Therefore, the understanding of the relationship between OS and PCOS is crucial to the development of therapeutic and preventive strategies for PCOS. Moreover, the mechanistic study of intracellular reactive oxygen species/ reactive nitrogen species formation and its possible interaction with women's reproductive health is required, which includes complex enzymatic and non-enzymatic antioxidant systems. Apart from that, our current review includes possible regulation of the pathogenesis of OS. A change in lifestyle, including physical activity, various supplements that boost antioxidant levels, particularly vitamins, and the usage of medicinal herbs, is thought to be the best way to combat this occurrence of OS and improve the pathophysiologic conditions associated with PCOS.


Asunto(s)
Hiperandrogenismo , Resistencia a la Insulina , Síndrome del Ovario Poliquístico , Femenino , Humanos , Síndrome del Ovario Poliquístico/terapia , Síndrome del Ovario Poliquístico/complicaciones , Antioxidantes/uso terapéutico , Hiperandrogenismo/complicaciones , Estrés Oxidativo
2.
Front Endocrinol (Lausanne) ; 14: 1191759, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37929034

RESUMEN

Polycystic ovary syndrome (PCOS) is the most common endocrine disorder among women of reproductive age. Although promising strides have been made in the field of PCOS over the past decades, the distinct etiologies of this syndrome are not fully elucidated. Prenatal factors, genetic variation, epigenetic mechanisms, unhealthy lifestyles, and environmental toxins all contribute to the development of this intricate and highly heterogeneous metabolic, endocrine, reproductive, and psychological disorder. Moreover, interactions between androgen excess, insulin resistance, disruption to the hypothalamic-pituitary-ovary (HPO) axis, and obesity only make for a more complex picture. In this review, we investigate and summarize the related molecular mechanisms underlying PCOS pathogenesis from the perspective of the level of signaling pathways, including PI3K/Akt, TGF-ß/Smads, Wnt/ß-catenin, and Hippo/YAP. Additionally, this review provides an overview of prospective therapies, such as exosome therapy, gene therapy, and drugs based on traditional Chinese medicine (TCM) and natural compounds. By targeting these aberrant pathways, these interventions primarily alleviate inflammation, insulin resistance, androgen excess, and ovarian fibrosis, which are typical symptoms of PCOS. Overall, we hope that this paper will pave the way for better understanding and management of PCOS in the future.


Asunto(s)
Hiperandrogenismo , Resistencia a la Insulina , Síndrome del Ovario Poliquístico , Embarazo , Femenino , Humanos , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/etiología , Hiperandrogenismo/complicaciones , Andrógenos/uso terapéutico , Fosfatidilinositol 3-Quinasas/metabolismo , Transducción de Señal
3.
Drug Discov Today ; 28(12): 103821, 2023 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-37935329

RESUMEN

Polycystic ovary syndrome (PCOS) prevails in approximately 33% of females of reproductive age globally. Although the root cause of the disease is unknown, attempts are made to clinically manage the disturbed hormone levels and symptoms arising due to hyperandrogenism, a hallmark of PCOS. This review presents detailed insights on the etiology, risk factors, current treatment strategies, and challenges therein. Medicinal agents currently in clinical trials and those in the development pipeline are emphasized. The significance of the inclusion of herbal supplements in PCOS and the benefits of improved lifestyle are also explained. Last, emerging therapeutic targets for treating PCOS are elaborated. The present review will assist the research fraternity working in the concerned domain to access significant knowledge associated with PCOS.


Asunto(s)
Hiperandrogenismo , Síndrome del Ovario Poliquístico , Femenino , Humanos , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/diagnóstico , Hiperandrogenismo/complicaciones , Suplementos Dietéticos , Factores de Riesgo
4.
Nutrients ; 15(13)2023 Jun 29.
Artículo en Inglés | MEDLINE | ID: mdl-37447279

RESUMEN

Polycystic ovary syndrome (PCOS) is a heterogeneous endocrine disorder that affects 8-13% of women of reproductive age. It is one of the most common causes of infertility and is associated with hyperandrogenism in the form of hirsutism and acne, non-ovulatory cycles, and characteristic ovarian morphology. The available research on serum vitamin D deficiency in patients with PCOS and the appropriateness of vitamin D supplementation in this group of women is inconclusive, so we decided to investigate the influence of vitamin D on the incidence of metabolic syndrome and hormonal balance in patients with polycystic ovary syndrome. The study comprised 120 women aged between 18 and 42 years, who were divided into two groups: a group with diagnosed polycystic ovary syndrome (PCOS) and a group of regularly menstruating women without features of androgenisation, in whom polycystic ovary syndrome was excluded. Each patient underwent a history and physical examination, including a gynecological examination, anthropometric measurements were taken, including height, weight, waist, and hip circumference, and blood pressure was measured using the Korotkow method. In the female patients, the following parameters were also determined from the blood: follicle-stimulating hormone (FSH), luteinizing hormone (LH), oestradiol, TSH, ft4, prolactin (PRL), total testosterone, DHEASO4, 17-hydroxyprogesterone (17-OHP), sex-hormone-binding globulin (SHBG), androstendione, 25(OH) vitamin D3 metabolite. The majority of the patients with polycystic ovary syndrome were found to have deficient or suboptimal serum vitamin D levels, and the effects of vitamin D on the SHBG levels and free-androgen indices in these patients was examined. The effects of vitamin D on the incidence of metabolic syndrome and BMI, waist-to-hip ratio, waist circumference, and blood pressure in patients with polycystic ovary syndrome were also found.


Asunto(s)
Hiperandrogenismo , Síndrome Metabólico , Síndrome del Ovario Poliquístico , Femenino , Humanos , Adolescente , Adulto Joven , Adulto , Vitamina D , Síndrome Metabólico/epidemiología , Síndrome Metabólico/complicaciones , Incidencia , Hiperandrogenismo/complicaciones , Hormona Folículo Estimulante , Testosterona , Vitaminas
5.
Phytother Res ; 37(6): 2315-2325, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-36724890

RESUMEN

Polycystic ovary syndrome (PCOS) is one of the most common endocrine disorders associated with a high risk of diabetes, atherosclerosis, and cardiovascular disease. The purpose of this study was to determine the effect of sumac powder on clinical symptoms and laboratory parameters in women with PCOS. The double-blind randomized controlled clinical trial was conducted on 88 women with PCOS randomly assigned to the intervention and control groups. The intervention group received three capsules each containing 1 g of sumac powder for 12 weeks. All data and serum levels of sex hormone, hs-CRP, glucose, and lipid profiles were measured at the baseline and at the end of the study. Data were analyzed using SPSS version 25 software. The ANCOVA test results showed that hs-CRP level was significantly reduced in the intervention group (p = .008). Blood glucose and lipid profiles in the intervention group were significantly reduced compared to the placebo group (p < .05). Insulin sensitivity and HDL levels were increased significantly in the Sumac group after the intervention (p < .05). Sumac powder can reduce the inflammatory effects, and glycemic status and lipid profile of polycystic ovaries in affected women, but has no significant effect on anthropometric parameters and sex hormones.


Asunto(s)
Hiperandrogenismo , Resistencia a la Insulina , Síndrome del Ovario Poliquístico , Rhus , Femenino , Humanos , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/complicaciones , Hiperandrogenismo/complicaciones , Glucemia , Polvos/uso terapéutico , Proteína C-Reactiva/uso terapéutico , Inflamación , Lípidos , Método Doble Ciego , Suplementos Dietéticos
6.
J Complement Integr Med ; 20(2): 379-386, 2023 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-36617954

RESUMEN

OBJECTIVES: Polycystic ovary syndrome (PCOS) is an endocrinopathy affecting 5-20% of women of childbearing age. There is no single drug for the treatment of PCOS and current therapies have significant side effects. This study evaluated the ability of Milica excelsa to improve PCOS symptoms in rats. METHODS: Induction of PCOS was achieved using letrozole (a reversible aromatase inhibitor; 1 mg/kg; given orally for 21 days). From day 22, PCOS rats received the aqueous extract of M. excelsa roots (14 and 140 mg/kg). Clomiphene citrate (1 mg/kg) was administered to the positive control. The negative and the normal controls received the vehicle (5% DMSO). Treatments were given orally for 7 or 14 days. Vaginal smears were scrutinized daily during the experiment. Body weight was measured hebdomadal. Animals were sacrificed after the two treatment periods for biochemical and histological analyses. RESULTS: Aromatase inhibition caused hyperandrogenism (p<0.001), overweight (p<0.001) and fat accumulation (p<0.001). It also blocked the estrous cycle at the diestrus phase and altered ovarian dynamics as evidenced by the accumulation of cystic (p<0.001) and atretic (p<0.001) follicles. In contrast, M. excelsa induced weight loss (p<0.001), reduction in fat weight (p<0001), and lower serum androgen and LH levels (p<0.001). It also restored the estrous cycle and improved ovarian dynamics by increasing the amount of Graafian follicles (p<0.001) and corpora lutea (p<0.001), and decreasing that of cystic and atretic follicles (p<0.001). CONCLUSIONS: Milica excelsa corrected hyperandrogenism and overweight in PCOS animals, and reduced cyst formation and follicle atresia in their ovaries.


Asunto(s)
Hiperandrogenismo , Moraceae , Síndrome del Ovario Poliquístico , Humanos , Femenino , Ratas , Animales , Síndrome del Ovario Poliquístico/inducido químicamente , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Letrozol/efectos adversos , Aromatasa/efectos adversos , Hiperandrogenismo/complicaciones , Sobrepeso
7.
Arch Womens Ment Health ; 25(5): 911-921, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-36074275

RESUMEN

The aim of this study was to determine whether serum androgen levels have an effect on mindfulness and metacognition in adolescents with polycystic ovary syndrome (PCOS). Adolescents diagnosed with PCOS were asked to answer a questionnaire that included socio-demographic information and two scales: the Mindful Attention Awareness Scale (MAAS) and the Metacognition Scale Child and Adolescent form (MCQ-C). The patients were divided into two groups, the hyperandrogenism group and the non-hyperandrogenism group, according to serum androgen levels. The scores of MAAS and MCQ-C were compared between the groups. The study sample consisted of 70 adolescents. Of these, 44 had hyperandrogenism according to a blood test. No statistically significant difference was found in MAAS scores between the hyperandrogenism and the non-hyperandrogenism groups (p = 0.79). However, the level of mindfulness was found to be lower in participants with a higher modified Ferriman-Gallwey score (mFGS) (r = 0.26, p = 0.02). Mindfulness levels were also lower for obese patients with PCOS compared to non-obese patients with PCOS (p = 0.02). Cognitive monitoring (MCQ-C-CM), one of the MCQ-C sub-scales, was significantly higher in the non-hyperandrogenism group (p = 0.03), and similarly, a positive correlation was detected between higher androgen levels and the positive meta-worry (MCQ-C-PM) sub-scale of the MCQ-C (for total testosterone; r = 0.348, p = 0.03, and for androstenedione; r = 0.35, p = 0.03). High serum androgen levels in PCOS had no effect on mindfulness, but as the modified Ferriman Gallwey score increased, mindfulness levels decreased. For the sub-scales of MCQ-C,MCQ-C-CM, and MCQ-C-PM, the scores increased as androgen levels increased. In line with the results of the present study, evaluating mindfulness in PCOS patients with increased hair growth and metacognition in PCOS patients with serum hyperandrogenism may contribute well-being in adulthood by reducing the psychological burden caused by the disease.


Asunto(s)
Hiperandrogenismo , Metacognición , Atención Plena , Síndrome del Ovario Poliquístico , Adolescente , Andrógenos , Androstenodiona , Femenino , Humanos , Hiperandrogenismo/complicaciones , Hiperandrogenismo/diagnóstico , Obesidad , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/diagnóstico , Testosterona
8.
Nutrients ; 13(5)2021 May 15.
Artículo en Inglés | MEDLINE | ID: mdl-34063339

RESUMEN

Polycystic ovary syndrome (PCOS) is a heterogenous disorder characterized by chronic ovulation dysfunction and hyperandrogenism. It is considered the most common endocrinological disorder, affecting up to 25% of women of reproductive age, and associated with long-term metabolic abnormalities predisposing to cardiovascular risk, such as insulin resistance (IR), dyslipidemia, endothelial dysfunction, and systemic inflammation. PCOS is also characterized by elevated serum levels of luteinizing hormone (LH), causing a condition of hyperandrogenism and a consequent altered ratio between LH and the follicle stimulating hormone (FSH). Over the years, several different approaches have been proposed to alleviate PCOS symptoms. Supplementation with natural molecules such as inositols, resveratrol, flavonoids and flavones, vitamin C, vitamin E and vitamin D, and omega-3 fatty acids may contribute to overcoming PCOS pathological features, including the presence of immature oocyte, IR, hyperandrogenism, oxidative stress and inflammation. This review provides a comprehensive overview of the current knowledge about the efficacy of natural molecule supplementation in the management of PCOS.


Asunto(s)
Síndrome del Ovario Poliquístico/sangre , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Ácido Ascórbico , Suplementos Dietéticos , Dislipidemias/complicaciones , Ácidos Grasos Omega-3 , Femenino , Flavanonas , Flavonoides , Hormona Folículo Estimulante/sangre , Humanos , Hiperandrogenismo/complicaciones , Inositol , Resistencia a la Insulina , Hormona Luteinizante/sangre , Ovulación , Resveratrol , Vitamina D , Vitamina E , Vitaminas
9.
Endocrinology ; 160(12): 2787-2799, 2019 12 01.
Artículo en Inglés | MEDLINE | ID: mdl-31593246

RESUMEN

Polycystic ovary syndrome (PCOS) is characterized by hyperandrogenism and ovulatory dysfunction. Women with PCOS have an elevated prevalence of cardiometabolic risk factors that worsen after menopause. Liraglutide (Lira), a glucagon-like peptide-1 receptor agonist, has shown beneficial metabolic effects in small clinic trials in reproductive-age women with PCOS. We have shown that chronic hyperandrogenemia in an experimental model of postmenopausal PCOS is associated with an adverse cardiometabolic profile and upregulation of the intrarenal renin-angiotensin system (RAS). We analyzed the effect of Lira in the cardiometabolic profile, intrarenal RAS, and blood pressure (BP) in postmenopausal PCOS. Four-week-old female Sprague Dawley rats were treated with DHT or placebo for 17 months. Lira administration during the last 3 weeks caused a bigger reduction in food intake, body weight, fat mass, and homeostasis model assessment of insulin resistance index in PCOS than in control rats. Moreover, Lira improved dyslipidemia and elevated leptin levels in PCOS. In contrast, Lira decreased intrarenal expression of RAS components only in the control group. Lira transiently increased heart rate and decreased BP in control rats. However, Lira did not modify BP but increased heart rate in PCOS. The angiotensin-converting-enzyme inhibitor enalapril abolished the BP differences between PCOS and control rats. However, Lira coadministration with enalapril further reduced BP only in control rats. In summary, Lira has beneficial effects for several cardiometabolic risk factors in postmenopausal PCOS. However, hyperandrogenemia blunted the BP-lowering effect of Lira in postmenopausal PCOS. Androgen-induced activation of intrarenal RAS may play a major role mediating increases in BP in postmenopausal PCOS.


Asunto(s)
Receptor del Péptido 1 Similar al Glucagón/agonistas , Hiperandrogenismo/complicaciones , Liraglutida/uso terapéutico , Síndrome Metabólico/prevención & control , Síndrome del Ovario Poliquístico/complicaciones , Animales , Presión Sanguínea/efectos de los fármacos , Composición Corporal/efectos de los fármacos , Peso Corporal/efectos de los fármacos , Modelos Animales de Enfermedad , Evaluación Preclínica de Medicamentos , Ingestión de Alimentos/efectos de los fármacos , Femenino , Frecuencia Cardíaca/efectos de los fármacos , Resistencia a la Insulina , Leptina/sangre , Lípidos/sangre , Liraglutida/farmacología , Síndrome Metabólico/etiología , Posmenopausia , Distribución Aleatoria , Ratas Sprague-Dawley , Sistema Renina-Angiotensina/efectos de los fármacos
10.
J Eur Acad Dermatol Venereol ; 33 Suppl 6: 28-31, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-31535767

RESUMEN

Hidradenitis suppurativa (HS) is a chronic, recurrent, inflammatory disease associated with a high physical and psychological burden. It is a disorder of the infundibular segment of the pilosebaceous unit, characterized by subcutaneous nodules, abscesses, sinus tracts and scar formation on the intertriginous and apocrine-bearing areas. HS is quite rare in young and prepubertal children. It usually begins after puberty, but several reports of prepubertal HS onset have been described. These cases are strongly linked to hormonal disorders and genetic susceptibility. Specific guidelines for prepubertal patients are still lacking, so further studies are warranted to better delineate a tailored approach. This paper aims to summarize the most significant aspects, as well as the most recent information about the epidemiology, pathogenesis, clinical features, diagnosis, comorbidities and treatment of paediatric HS. In addition, we report our clinical experience in managing HS in a group of eight prepubertal patients based on systemic antibiotics (azithromycin) and zinc oral supplementation.


Asunto(s)
Antibacterianos/uso terapéutico , Hidradenitis Supurativa/tratamiento farmacológico , Azitromicina/uso terapéutico , Niño , Clindamicina/uso terapéutico , Quimioterapia Combinada , Femenino , Predisposición Genética a la Enfermedad , Hidradenitis Supurativa/complicaciones , Hidradenitis Supurativa/epidemiología , Hidradenitis Supurativa/genética , Humanos , Hiperandrogenismo/complicaciones , Hiperinsulinismo/complicaciones , Guías de Práctica Clínica como Asunto , Pubertad Precoz/complicaciones
11.
PLoS One ; 14(5): e0216951, 2019.
Artículo en Inglés | MEDLINE | ID: mdl-31083690

RESUMEN

Hyperandrogenism is a risk factor of cerebrovascular diseases as androgens can alter markedly the regulation of cerebrovascular tone. We examined the combined impact of androgen excess and vitamin D deficiency (VDD), a common co-morbidity in hyperandrogenic disorders, on remodeling and testosterone-induced vascular responses of anterior cerebral arteries (ACA) in order to evaluate the interplay between androgens and VDD in the cerebral vasculature. Male and female Wistar rats were either fed with vitamin D deficient or vitamin D supplemented diet. Half of the female animals from both groups received transdermal testosterone treatment. After 8 weeks, vessel lumen, wall thickness and testosterone-induced vascular tone of isolated ACA were determined using pressure microangiometry and histological examination. Androgen receptor protein expression in the wall of cerebral arteries was examined using immunohistochemistry. In female rats only combined VDD and testosterone treatment decreased the lumen and increased the wall thickness of ACA. In males, however VDD by itself was able to decrease the lumen and increase the wall thickness. Vascular reactivity showed similar alterations: in females, testosterone constricted the ACA only after combined VDD and hyperandrogenism, whereas in males VDD resulted in increased testosterone-induced contractions in spite of decreased androgen receptor expression. In conclusion, a marked interplay between hyperandrogenism and VDD results in inward remodeling and enhanced testosterone-induced constrictions of cerebral arteries, which might compromise the cerebral circulation and thus, increase the risk of stroke in the long term. In addition, the early cerebrovascular manifestation of VDD appears to require androgen excess and thus, depends on gender.


Asunto(s)
Andrógenos/efectos adversos , Hiperandrogenismo/fisiopatología , Accidente Cerebrovascular/fisiopatología , Testosterona/efectos adversos , Deficiencia de Vitamina D/fisiopatología , Administración Oral , Andrógenos/administración & dosificación , Andrógenos/sangre , Animales , Arteria Cerebral Anterior , Dieta , Modelos Animales de Enfermedad , Femenino , Expresión Génica , Humanos , Hiperandrogenismo/sangre , Hiperandrogenismo/inducido químicamente , Hiperandrogenismo/complicaciones , Masculino , Ratas , Ratas Wistar , Receptores Androgénicos/genética , Receptores Androgénicos/metabolismo , Riesgo , Factores Sexuales , Accidente Cerebrovascular/sangre , Accidente Cerebrovascular/inducido químicamente , Accidente Cerebrovascular/etiología , Testosterona/administración & dosificación , Testosterona/sangre , Vasoconstricción/efectos de los fármacos , Vitamina D/administración & dosificación , Deficiencia de Vitamina D/sangre , Deficiencia de Vitamina D/inducido químicamente , Deficiencia de Vitamina D/complicaciones
12.
J Endocrinol Invest ; 42(5): 549-555, 2019 May.
Artículo en Inglés | MEDLINE | ID: mdl-30284220

RESUMEN

PURPOSE: To investigate the effects of metabolic abnormalities, hyperandrogenemia and ovulation induction by clomiphene/acupuncture on liver function parameters among women with polycystic ovary syndrome (PCOS). METHODS: This is a secondary analysis of a randomized controlled trial. All 1000 subjects were diagnosed as PCOS by modified Rotterdam criteria. Liver function parameters, metabolic panel and hormone profile were measured at baseline and after treatment. The relationship between liver parameters with metabolic, hormonal parameters and ovulation induction was examined. RESULTS: PCOS women with metabolic syndrome had higher liver enzyme levels but lower bilirubin and bile acid levels than without. PCOS women with hyperandrogenemia had higher liver enzyme, bilirubin levels than without. Correlation analyses showed that worsening of metabolic parameters was associated with higher liver enzyme levels but lower bilirubin and bile acid levels, while increased androgen levels were associated with higher liver enzyme, bilirubin and bile acid levels. Ovulation induction with clomiphene citrate could decrease bilirubin and bile acid levels, while acupuncture had no obvious effect on liver function. CONCLUSIONS: Among PCOS women, metabolic abnormalities and hyperandrogenemia impaired different liver function parameters. Clomiphene could decrease the bilirubin and bile acid levels while acupuncture had no obvious effect on liver function.


Asunto(s)
Clomifeno/farmacología , Hiperandrogenismo/complicaciones , Hígado/fisiopatología , Síndrome Metabólico/complicaciones , Inducción de la Ovulación , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Terapia por Acupuntura , Alanina Transaminasa/metabolismo , Aspartato Aminotransferasas/metabolismo , Bilirrubina/metabolismo , Biomarcadores/metabolismo , Estudios de Casos y Controles , Femenino , Fármacos para la Fertilidad Femenina/farmacología , Estudios de Seguimiento , Humanos , Hígado/efectos de los fármacos , Hígado/metabolismo , Pruebas de Función Hepática , Síndrome del Ovario Poliquístico/etiología , Síndrome del Ovario Poliquístico/patología , Pronóstico , Estudios Prospectivos
13.
Diab Vasc Dis Res ; 15(4): 294-301, 2018 07.
Artículo en Inglés | MEDLINE | ID: mdl-29465004

RESUMEN

Hyperandrogenic state in females is accompanied with metabolic syndrome, insulin resistance and vascular pathologies. A total of 67%-85% of hyperandrogenic women suffer also from vitamin D deficiency. We aimed to check a potential interplay between hyperandrogenism and vitamin D deficiency in producing insulin resistance and effects on coronary resistance arteries. Adolescent female rats were divided into four groups, 11-12 animals in each. Transdermal testosterone-treated and vehicle-treated animals were kept either on vitamin D-deficient or on vitamin D-supplemented diet for 8 weeks. Plasma sexual steroid, insulin, leptin and vitamin D plasma levels were measured, and oral glucose tolerance test was performed. In coronary arterioles, insulin receptor and vitamin D receptor expressions were tested by immunohistochemistry, and insulin-induced relaxation was measured in vitro on isolated coronary resistance artery segments. Testosterone impaired glucose tolerance, and it diminished insulin relaxation but did not affect the expression of insulin and vitamin D receptors in vascular tissue. Vitamin D deficiency elevated postprandial insulin levels and homeostatic model assessment insulin resistance. It also diminished insulin-induced coronary arteriole relaxation, while it raised the expression of vitamin D and insulin receptors in the endothelial and medial layers. Our conclusion is that both hyperandrogenism and vitamin D deficiency reduce sensitivity of coronary vascular tissue to insulin, but they do it with different mechanisms.


Asunto(s)
Arteriolas/fisiopatología , Enfermedad de la Arteria Coronaria/etiología , Vasos Coronarios/fisiopatología , Hiperandrogenismo/complicaciones , Resistencia a la Insulina , Síndrome del Ovario Poliquístico/complicaciones , Deficiencia de Vitamina D/complicaciones , Animales , Arteriolas/metabolismo , Biomarcadores/sangre , Glucemia/metabolismo , Enfermedad de la Arteria Coronaria/sangre , Enfermedad de la Arteria Coronaria/fisiopatología , Vasos Coronarios/metabolismo , Modelos Animales de Enfermedad , Femenino , Prueba de Tolerancia a la Glucosa , Hormonas Esteroides Gonadales/sangre , Hiperandrogenismo/sangre , Hiperandrogenismo/fisiopatología , Insulina/sangre , Leptina/sangre , Síndrome del Ovario Poliquístico/sangre , Síndrome del Ovario Poliquístico/fisiopatología , Ratas Wistar , Factores de Tiempo , Resistencia Vascular , Vasodilatación , Vitamina D/sangre , Deficiencia de Vitamina D/sangre , Deficiencia de Vitamina D/fisiopatología
14.
Am J Physiol Regul Integr Comp Physiol ; 308(8): R708-13, 2015 Apr 15.
Artículo en Inglés | MEDLINE | ID: mdl-25695289

RESUMEN

Women with polycystic ovary syndrome (PCOS) have hyperandrogenemia and increased prevalence of risk factors for cardiovascular disease, including elevated blood pressure. We recently characterized a hyperandrogenemic female rat (HAF) model of PCOS [chronic dihydrotestosterone (DHT) beginning at 4 wk of age] that exhibits similar characteristics as women with PCOS. In the present studies we tested the hypotheses that the elevated blood pressure in HAF rats is mediated in part by sympathetic activation, renal nerves, and melanocortin-4 receptor (MC4R) activation. Adrenergic blockade with terazosin and propranolol or renal denervation reduced mean arterial pressure (MAP by telemetry) in HAF rats but not controls. Hypothalamic MC4R expression was higher in HAF rats than controls, and central nervous system MC4R antagonism with SHU-9119 (1 nmol/h icv) reduced MAP in HAF rats. Taking a genetic approach, MC4R null and wild-type (WT) female rats were treated with DHT or placebo from 5 to 16 wk of age. MC4R null rats were obese and had higher MAP than WT control rats, and while DHT increased MAP in WT controls, DHT failed to further increase MAP in MC4R null rats. These data suggest that increases in MAP with chronic hyperandrogenemia in female rats are due, in part, to activation of the sympathetic nervous system, renal nerves, and MC4R and may provide novel insights into the mechanisms responsible for hypertension in women with hyperandrogenemia such as PCOS.


Asunto(s)
Presión Arterial , Hiperandrogenismo/complicaciones , Hipertensión/etiología , Hipotálamo/metabolismo , Hipotálamo/fisiopatología , Riñón/inervación , Síndrome del Ovario Poliquístico/complicaciones , Receptor de Melanocortina Tipo 4/metabolismo , Sistema Nervioso Simpático/fisiopatología , Antagonistas Adrenérgicos/farmacología , Animales , Presión Arterial/efectos de los fármacos , Dihidrotestosterona , Modelos Animales de Enfermedad , Femenino , Antagonistas de Hormonas , Hiperandrogenismo/inducido químicamente , Hiperandrogenismo/tratamiento farmacológico , Hiperandrogenismo/metabolismo , Hiperandrogenismo/fisiopatología , Hipertensión/metabolismo , Hipertensión/fisiopatología , Hipertensión/prevención & control , Hipotálamo/efectos de los fármacos , Síndrome del Ovario Poliquístico/inducido químicamente , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/metabolismo , Síndrome del Ovario Poliquístico/fisiopatología , Ratas Sprague-Dawley , Receptor de Melanocortina Tipo 4/antagonistas & inhibidores , Transducción de Señal , Simpatectomía , Sistema Nervioso Simpático/efectos de los fármacos , Sistema Nervioso Simpático/cirugía , Factores de Tiempo
15.
Exp Clin Endocrinol Diabetes ; 123(2): 75-9, 2015 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-25350347

RESUMEN

Statins decreased serum androgen levels in hyperandrogenemic women with polycystic ovary syndrome. No previous study has investigated whether this effect is dose-dependent and observed in patients simultaneously treated with other hypolipidemic agents. The study included 23 premenopausal women with elevated total testosterone levels coexisting with hypercholesterolemia, unsuccessfully treated for at least 6 months with atorvastatin (20 mg daily). These patients were then treated with either an increased dose of atorvastatin (40 mg daily, n=11) or atorvastatin (20 mg daily) plus ezetimibe (10 mg daily) (n=12). Plasma lipids, glucose homeostasis markers and serum levels of androgens, sex hormone-binding globulin and gonadotropins were assessed at baseline and after 3 months of treatment. Although both treatments decreased plasma levels of total and LDL-cholesterol levels, only high-dose atorvastatin reduced serum levels of total testosterone, free testosterone and androstendione. The effect of high-dose atorvastatin on serum androgen levels did not differ between insulin-resistant and insulin-sensitive subjects. The obtained results suggest that atorvastatin reduces serum androgen levels in a dose-dependent manner and that its administration in a higher dose is associated with a more pronounced effect on serum androgens than combination therapy with low-dose atorvastatin and ezetimibe.


Asunto(s)
Andrógenos/sangre , Anticolesterolemiantes/uso terapéutico , Azetidinas/uso terapéutico , Colesterol/sangre , Ácidos Heptanoicos/uso terapéutico , Hiperandrogenismo/tratamiento farmacológico , Hipercolesterolemia/tratamiento farmacológico , Pirroles/uso terapéutico , Adulto , Atorvastatina , Quimioterapia Combinada , Ezetimiba , Femenino , Humanos , Hiperandrogenismo/sangre , Hiperandrogenismo/complicaciones , Hipercolesterolemia/sangre , Hipercolesterolemia/complicaciones , Persona de Mediana Edad , Globulina de Unión a Hormona Sexual , Resultado del Tratamiento , Adulto Joven
16.
Arch Gynecol Obstet ; 290(6): 1079-92, 2014 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-25200687

RESUMEN

INTRODUCTION: Polycystic ovary syndrome (PCOS) is associated with numerous metabolic morbidities (insulin resistance (IR), central obesity) and various nutritional abnormalities (vitamin D deficit, mineral milieu alterations, omega6/omega3 PUFA ratio unbalance). METHODS: We performed a systematic literature review to evaluate the till-now evidence regarding: (1) the metabolic and nutritional correlates of PCOS; (2) the optimum diet therapy for the treatment of these abnormalities. This review included 127 eligible studies. RESULTS: In addition to the well-recognized link between PCOS and IR, the recent literature underlines that in PCOS there is an unbalance in adipokines (adiponectin, leptin, visfatin) production and in omega6/omega3 PUFA ratio. Given the detrimental effect of overweight on these metabolic abnormalities, a change in the lifestyle must be the cornerstone in the treatment of PCOS patients. The optimum diet therapy for the PCOS treatment must aim at achieving specific metabolic goals, such as IR improvement, adipokines secretion and reproductive function. These goals must be reached through: accession of the patient to hypocaloric dietary program aimed at achieving and/or maintaining body weight; limiting the consumption of sugar and refined carbohydrates, preferring those with lower glycemic index; dividing the food intake in small and frequent meals, with high caloric intake at breakfast; increasing their intake of fish (4 times/week) or taking omega3 PUFA supplements; taking Vitamin D and chromium supplementation, if there are low serum levels. CONCLUSION: Lifestyle intervention remains the optimal treatment strategy for PCOS women. A relatively small weight loss (5 %) can improve IR, hyperandrogenism, menstrual function, fertility.


Asunto(s)
Adipoquinas/sangre , Dieta , Ingestión de Energía , Obesidad/dietoterapia , Síndrome del Ovario Poliquístico/dietoterapia , Pérdida de Peso/fisiología , Adulto , Femenino , Índice Glucémico , Humanos , Hiperandrogenismo/complicaciones , Resistencia a la Insulina , Estilo de Vida , Obesidad/complicaciones , Obesidad/fisiopatología , Sobrepeso/dietoterapia , Sobrepeso/fisiopatología , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/psicología , Pérdida de Peso/efectos de los fármacos
17.
G Ital Dermatol Venereol ; 149(1): 15-24, 2014 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-24566563

RESUMEN

Androgenetic alopecia (AGA) is the most common form of alopecia, affecting up to 80% of men and 50% of women in the course of their life. AGA is caused by a progressive reduction in the diameter, length and pigmentation of the hair. Hair thinning results from the effects of the testosterone metabolite dehydrotestosterone (DHT) on androgen-sensitive hair follicles. In women, AGA produces diffuse thinning of the crown region with maintenance of the frontal hairline (Ludwig pattern AGA). In premenopausal women, AGA can be a sign of hyperandrogenism, together with hirsutism and acnes. Male pattern is characterized by bitemporal recession of the frontal hairline, followed by diffuse thinning at the vertex. Today, scalp dermoscopy is used routinely in patients with androgenetic alopecia, as it facilitates the diagnosis and differential diagnosis with other diseases, allows staging of severity, and allows you to monitor the progress of the disease in time and response to treatment. AGA is a progressive disease that tends to worsen with time. Medical treatment of AGA includes topical minoxidil, antiandrogen agents, 5-alpha reductase inhibitors.


Asunto(s)
Alopecia , Inhibidores de 5-alfa-Reductasa/uso terapéutico , Alopecia/diagnóstico , Alopecia/tratamiento farmacológico , Alopecia/epidemiología , Alopecia/etiología , Alopecia/fisiopatología , Antagonistas de Andrógenos/uso terapéutico , Biopsia , Comorbilidad , Contraindicaciones , Dermoscopía , Suplementos Dietéticos , Femenino , Folículo Piloso/patología , Hirsutismo/etiología , Humanos , Hiperandrogenismo/complicaciones , Cetoconazol/uso terapéutico , Masculino , Menopausia , Minoxidil/efectos adversos , Minoxidil/uso terapéutico , Pronóstico , Receptores Androgénicos/metabolismo , Cuero Cabelludo/patología , Caracteres Sexuales , Testosterona/análogos & derivados , Testosterona/metabolismo , Virilismo/complicaciones
18.
Theriogenology ; 78(3): 620-31, 2012 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-22541319

RESUMEN

The objective was to evaluate ovarian functionality and oxidative response in hyperandrogenism-induced polycystic ovary (PCO) and the protective effects of immunomodulator drug (IMOD), an electromagnetically-treated, selenium-based, herbal medicine. Daily oral administration of letrozole (1 mg/kg) for 21 consecutive days induced ovarian cysts in female rats. An effective dose of IMOD (30 mg/kg per day) was given intraperitoneally for 21 days. Biomarkers of ovarian function, serum concentrations of estradiol, progesterone, testosterone, and ovarian prostaglandin-E (PGE), were analyzed. To determine the role of oxidative stress (OS) in hyperandrogenism-induced PCO, concentrations of cellular lipid peroxidation (LPO), superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), peroxynitrite (ONOO), and tumor necrosis factor (TNF)-α as a marker of inflammation and apoptosis were measured in serum and ovaries. Letrozole-induced PCO resulted in significant increases in concentrations of lipid peroxidation and peroxynitrite in serum and ovary, but significantly decreased superoxide dismutase, catalase, and glutathione peroxidase. Serum concentrations of testosterone and TNF-α, and ovarian prostaglandin-E were increased (P < 0.001) in animals with cysts versus control, whereas estradiol and progesterone were decreased (P < 0.01 and P < 0.001, respectively). When compared with controls, letrozole induced irregular cycles and PCO characterized by a high incidence of subcapsular ovarian cysts with a diminished granulosa cell layer, luteinized granulosa cells in the cyst wall, significantly more atretic preantral and antral follicles, and absence of CL. There were almost no intact primary, secondary, and tertiary follicles in PCO rats. All end points assessed were significantly improved by IMOD and reached close to normal levels. In conclusion, the present study provided evidence that toxic free radicals and TNF-α were involved in the pathogenesis of PCO; furthermore, IMOD prevented ovarian histopathologic, endocrine, and biochemical alterations induced by hyperandrogenism.


Asunto(s)
Antioxidantes/administración & dosificación , Hiperandrogenismo/complicaciones , Extractos Vegetales/administración & dosificación , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Síndrome del Ovario Poliquístico/prevención & control , Selenio/administración & dosificación , Animales , Antioxidantes/análisis , Biomarcadores/análisis , Estradiol/sangre , Femenino , Hiperandrogenismo/inducido químicamente , Letrozol , Peroxidación de Lípido/efectos de los fármacos , Nitrilos/administración & dosificación , Ovario/química , Estrés Oxidativo/efectos de los fármacos , Síndrome del Ovario Poliquístico/etiología , Progesterona/sangre , Prostaglandinas E/análisis , Ratas , Ratas Wistar , Testosterona/sangre , Triazoles/administración & dosificación , Factor de Necrosis Tumoral alfa/sangre
19.
Zhongguo Zhong Xi Yi Jie He Za Zhi ; 20(8): 589-92, 2000 Aug.
Artículo en Chino | MEDLINE | ID: mdl-11789189

RESUMEN

OBJECTIVE: To observe the efficacy of Chinese herbal formula "Tiangui Fang" (TGF) in hyperandrogenism and hyperinsulinism patients of polycystic ovarian syndrome (PCOS), and compare with western medicine metformin. METHODS: Twenty-two anti-clomiphen citrite patients were divided into two treatment groups: "Tiangui Fang" (n = 10) and metformin (n = 12) for three months. Insulin response during oral glucose tolerance test and serum level of LH, FSH, testosterone (T), estradiol (E2) and waist to hip ratio (WHR), body mass index (BMI) were measured before and after treatment. RESULTS: After treatment for three months with metformin or TGF, fasting and the integrated insulin response to the glucose load decreased. Treated by metformin 4 out of 8 patients had restoration of menstrual cyclicity and 2 of them had double phase bases body temperature (BBT). This was accompanied by lowering in serum logT/E2 but had no significant difference, the BMI, WHR and serum E2, LH:FSH ratio were not changed. Treated by TGF for three months, 6 out of 8 patients had restoration of menstrual cyclicity and double phase BBT. This was accompanied by significant lowering in serum T, logT/E2 and BMI (P < 0.05), serum LH:FSH ratio were not changed. CONCLUSION: Both metformin and TGF can reduce the high concentration of insulin in PCOS patients and induce ovulation, the herbal formula has a better efficacy.


Asunto(s)
Medicamentos Herbarios Chinos/uso terapéutico , Hiperandrogenismo/tratamiento farmacológico , Hiperinsulinismo/tratamiento farmacológico , Síndrome del Ovario Poliquístico/tratamiento farmacológico , Adolescente , Adulto , Femenino , Humanos , Hiperandrogenismo/complicaciones , Hiperinsulinismo/complicaciones , Hipoglucemiantes/uso terapéutico , Insulina/sangre , Metformina/uso terapéutico , Ovulación/efectos de los fármacos , Síndrome del Ovario Poliquístico/sangre , Síndrome del Ovario Poliquístico/complicaciones , Testosterona/sangre
20.
J Reprod Med ; 44(10): 870-4, 1999 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-10554748

RESUMEN

OBJECTIVE: To determine the prevalence of the polycystic ovary syndrome (PCOS) among women seeking electrology, clients presenting to nine electrology centers completed a questionnaire. STUDY DESIGN: Women with potential risk factors were referred to the University of Alabama at Birmingham. They underwent a detailed history and physical examination, including hirsutism scoring by a modified Ferriman-Gallwey (F-G) method. Serum was assayed for total testosterone, sex hormone binding globulin and dehydroepiandrosterone sulfate. RESULTS: Three hundred fifteen (40%) of 779 patients had potential risk factors for hyperandrogenism and were referred. Eighty-two (26%) completed their evaluation. Six were excluded secondary to prepubertal or menopausal status. Of the remaining 76 patients, 20% had F-G scores of 7 or 8, 13% had scores of 9 or 10, and 21% had scores > 10. Forty-nine (64%) patients reported irregular menstrual cycles. Sixty-four patients were not receiving hormonal therapy: 25 reported regular menstrual cycles, and 39 reported irregular cycles. Seventeen (68%) of the 25 had at least one abnormal androgen value, while 33 (85%) of the 39 women had at least one abnormal value (nonsignificant difference). Overall, PCOS was evident in 39 of the 76 women, or 12% of the 315 patients who were referred for further evaluation. CONCLUSION: Thirty-nine of the 315 referred patients (12%) fulfilled the diagnostic criteria for PCOS. However, they were not receiving medical care for this condition. In addition, this percentage is a conservative estimate in that 74% of the referred patients did not pursue a medical evaluation. Therefore, efforts to educate both electrologists and their clients of the possibility of underlying endocrine disorders and subsequent metabolic morbidity should be undertaken.


Asunto(s)
Hirsutismo/etiología , Hiperandrogenismo/diagnóstico , Síndrome del Ovario Poliquístico/epidemiología , Adulto , Estudios Transversales , Terapia por Estimulación Eléctrica , Femenino , Hirsutismo/terapia , Humanos , Hiperandrogenismo/complicaciones , Incidencia , Síndrome del Ovario Poliquístico/complicaciones , Síndrome del Ovario Poliquístico/diagnóstico , Factores de Riesgo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA