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Bril F, Pace L, Azziz R. Response to Letter to the Editor From de Zegher and Ibáñez: "Adipose Tissue Dysfunction in Polycystic Ovary Syndrome". J Clin Endocrinol Metab 2024; 109:e1973-e1974. [PMID: 38922814 DOI: 10.1210/clinem/dgae407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Indexed: 06/28/2024]
Affiliation(s)
- Fernando Bril
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA
- UAB Comprehensive Diabetes Center, University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA
| | - Lauren Pace
- Department of Obstetrics & Gynecology, Heersink School of Medicine, UAB, Birmingham, AL 35233, USA
| | - Ricardo Azziz
- Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham (UAB), Birmingham, AL 35233, USA
- Department of Obstetrics & Gynecology, Heersink School of Medicine, UAB, Birmingham, AL 35233, USA
- Department of Healthcare Organization and Policy, School of Public Health, UAB, Birmingham, AL 35233, USA
- Department of Health Policy, Management and Behavior, School of Public Health, University at Albany, SUNY, Rensselaer, NY 12144, USA
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de Zegher F, Ibáñez L. Letter to the Editor from de Zegher and Ibáñez: "Adipose Tissue Dysfunction in Polycystic Ovary Syndrome". J Clin Endocrinol Metab 2024; 109:e1959. [PMID: 38922827 DOI: 10.1210/clinem/dgae406] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Indexed: 06/28/2024]
Affiliation(s)
- Francis de Zegher
- Leuven Research & Development, University of Leuven, 3000 Leuven, Belgium
| | - Lourdes Ibáñez
- Endocrinology Department, Institut de Recerca Sant Joan de Déu, University of Barcelona, 08950 Esplugues, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, 28029 Madrid, Spain
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de Zegher F, Ibáñez L. Leader vs follower in the tango of polycystic ovary syndrome: Insulin resistance vs androgen excess. Acta Obstet Gynecol Scand 2024; 103:1680-1681. [PMID: 38339869 PMCID: PMC11266632 DOI: 10.1111/aogs.14802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/29/2024] [Indexed: 02/12/2024]
Affiliation(s)
| | - Lourdes Ibáñez
- Endocrinology DepartmentInstitut de Recerca Sant Joan de Déu, University of Barcelona, EspluguesBarcelonaSpain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM)Instituto de Salud Carlos IIIMadridSpain
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de Zegher F, Díaz M, Ibáñez L. Adolescent polycystic ovary syndrome without obesity: HOTAIR rs1443512 genotype relates to fat mass and to the redistribution of fat mass on low-dose pioglitazone. J Endocrinol Invest 2024; 47:1037-1043. [PMID: 37805962 DOI: 10.1007/s40618-023-02206-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 09/21/2023] [Indexed: 10/10/2023]
Abstract
INTRODUCTION Adolescent polycystic ovary syndrome (PCOS) is characterized by androgen excess and oligo-amenorrhea, and often results from ectopic lipid storage due to a mismatch between early adipogenesis and later lipogenesis. Endogenous HOX transcript antisense RNA (HOTAIR) and exogenous pioglitazone are enhancers of subcutaneous adipogenesis, particularly in the gluteofemoral region. The A allele of HOTAIR rs1443512 is an equivalent of a natural knock-down and is, thus, a candidate to influence the distribution of fat mass, and also the redistribution of fat mass by pioglitazone in adolescent PCOS-without-obesity. SUBJECTS AND METHODS We performed two post hoc analyses by HOTAIR rs1443512 genotype. In the first, we analyzed the pooled pre-treatment data (auxology; endocrinology; body composition by dual X-ray absorptiometry; abdominal fat distribution by magnetic resonance imaging) of 65 adolescent girls with PCOS-without-obesity in three reported studies (ISRCTN45546616; ISRCTN29234515; ISRCTN11062950). In the second, we analyzed the results of 24 adolescent girls with PCOS-without-obesity, who received pioglitazone (7.5 mg/d for 1 year) as part of a randomized combination treatment (with spironolactone and metformin) in two reported studies (ISRCTN29234515; ISRCTN11062950). All data had been obtained in a blinded-to-genotype way. RESULTS The pre-treatment data disclosed that the girls-with-A-allele of HOTAIR rs1443512 had developed PCOS with a lower BMI (22.3 ± 2.3 kg/m2; N = 17) than the other girls (24.1 ± 2.7 kg/m2; N = 48), this difference being essentially attributable to a lower fat mass (mean difference 4.6 kg; P < 0.01). On low-dose pioglitazone, girls-with-A-allele (N = 12) raised their fat mass while the other girls (N = 12) did not (total fat mass + 2.2 ± 1.8 kg vs - 0.9 ± 2.2 kg; P < 0.001), particularly in the gynoid area (gluteofemoral fat + 0.6 ± 0.4 kg vs - 0.1 ± 0.5 kg; hip circumference + 2.3 ± 1.9 cm vs - 1.7 ± 3.1 cm; both P < 0.001). CONCLUSION The present findings suggest that the HOTAIR rs1443512 genotype influences not only the distribution of fat mass in adolescent girls with PCOS-without-obesity but also the redistribution of fat mass during prolonged treatment with low-dose pioglitazone. TRIAL REGISTRATION ISRCTN45546616 ( https://doi.org/10.1186/ISRCTN45546616 ). ISRCTN29234515 ( https://doi.org/10.1186/ISRCTN29234515 ). ISRCTN11062950 ( https://doi.org/10.1186/ISRCTN11062950 ).
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Affiliation(s)
- F de Zegher
- Leuven Research and Development, University of Leuven, 3000, Leuven, Belgium
| | - M Díaz
- Research Institute Sant Joan de Déu, University of Barcelona, Esplugues, 08950, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Health Institute Carlos III, 28029, Madrid, Spain
| | - L Ibáñez
- Research Institute Sant Joan de Déu, University of Barcelona, Esplugues, 08950, Barcelona, Spain.
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Health Institute Carlos III, 28029, Madrid, Spain.
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Díaz M, de Zegher F, Ibáñez L. Circulating follistatin concentrations in adolescent PCOS: Divergent effects of randomized treatments. Front Endocrinol (Lausanne) 2023; 14:1125569. [PMID: 36843579 PMCID: PMC9947640 DOI: 10.3389/fendo.2023.1125569] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 01/30/2023] [Indexed: 02/11/2023] Open
Abstract
PURPOSE Follistatin is a glycoprotein that represses members of the transforming growth factor-β superfamily including activin. Higher follistatin levels have been associated with an increased risk for type 2 diabetes and with polycystic ovary syndrome (PCOS). In non-obese adolescent girls with PCOS, insulin sensitization results in a healthier endocrine-metabolic outcome than oral contraception (OC); we assessed whether those differences are underscored by changes in serum follistatin concentrations. METHODS Circulating follistatin, endocrine-metabolic markers and hepato-visceral fat were measured longitudinally in 72 girls with PCOS [age, 16 years; body mass index (BMI), 23 Kg/m2] randomized to receive PioFluMet [pioglitazone (7.5 mg/d), metformin (850 mg/d) and flutamide (62.5 mg/d), n=17]; EE-CA [an OC containing 35 µg ethinylestradiol (EE) and 2 mg cyproterone acetate (CA), n=17]; SPIOMET [Spironolactone (50 mg/d), pioglitazone (7.5 mg/d) and metformin (850 mg/d), n=18], or EE-LNG [an OC containing 20 µg EE and 100 mg levonorgestrel (LNG), n=20]. Twenty-eight age- and BMI-matched healthy girls served as controls. RESULTS Pre-treatment follistatin levels were similar in PCOS and controls. OCs raised serum follistatin after 6 months (6.8-fold vs 2.5-fold for EE-CA and EE-LNG, respectively). Neither SPIOMET nor PioFluMet changed follistatin levels. Follistatin correlated negatively with high-molecular weight adiponectin and positively with mean serum insulin concentrations during an oral glucose tolerance test at baseline, and with liver fat after 6 months. CONCLUSION In girls with PCOS, follistatin levels rise significantly after 6 months on OCs and this increase associates to a worsening of markers of insulin resistance and to changes in liver fat.
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Affiliation(s)
- Marta Díaz
- Endocrinology Department, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, Instituto de Salud Carlos III, Madrid, Spain
| | | | - Lourdes Ibáñez
- Endocrinology Department, Institut de Recerca Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas, Instituto de Salud Carlos III, Madrid, Spain
- *Correspondence: Lourdes Ibáñez,
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Abstract
PURPOSE OF REVIEW This review provides a model for understanding polycystic ovary syndrome (PCOS) pathophysiology and updates the evidence on which it is based. Then, it highlights complimentary molecular genetic and epigenetic advances in understanding PCOS cause. RECENT FINDINGS Important studies into PCOS cause built on the 2014 discovery of a novel regulatory protein variant that underlies the typical PCOS steroidogenic abnormalities: DENND1A.V2 (differentially expressed in normal and neoplastic development, isoform 1A, variant 2). Over 30 DENND1A gene variants have been found, the vast majority upstream of the coding sequence and potentially regulatory. These variants are individually uncommon but collectively plausibly cause 50% of PCOS. Anti-Müllerian hormone (AMH)/AMH receptor variants with decreased function possibly cause 6.7% of PCOS. DENNND1A was recently reported to belong to a signaling network that upregulates luteinizing hormone receptor expression and insulin mitogenic signaling. Prenatal androgen administration has proven to be a potent epigenetic regulator that causes transgenerational epigenomic changes in a mouse PCOS model with similarities to those in human PCOS and PCOS daughters. SUMMARY In addition to finding how gene variants contribute to PCOS pathogenesis, better understanding of androgen epigenetic mechanisms of action in diverse tissues can be expected to expand our understanding of PCOS pathogenesis.
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Cheng HS, Tan WR, Low ZS, Marvalim C, Lee JYH, Tan NS. Exploration and Development of PPAR Modulators in Health and Disease: An Update of Clinical Evidence. Int J Mol Sci 2019; 20:E5055. [PMID: 31614690 PMCID: PMC6834327 DOI: 10.3390/ijms20205055] [Citation(s) in RCA: 130] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/10/2019] [Accepted: 10/10/2019] [Indexed: 12/20/2022] Open
Abstract
Peroxisome proliferator-activated receptors (PPARs) are nuclear receptors that govern the expression of genes responsible for energy metabolism, cellular development, and differentiation. Their crucial biological roles dictate the significance of PPAR-targeting synthetic ligands in medical research and drug discovery. Clinical implications of PPAR agonists span across a wide range of health conditions, including metabolic diseases, chronic inflammatory diseases, infections, autoimmune diseases, neurological and psychiatric disorders, and malignancies. In this review we aim to consolidate existing clinical evidence of PPAR modulators, highlighting their clinical prospects and challenges. Findings from clinical trials revealed that different agonists of the same PPAR subtype could present different safety profiles and clinical outcomes in a disease-dependent manner. Pemafibrate, due to its high selectivity, is likely to replace other PPARα agonists for dyslipidemia and cardiovascular diseases. PPARγ agonist pioglitazone showed tremendous promises in many non-metabolic disorders like chronic kidney disease, depression, inflammation, and autoimmune diseases. The clinical niche of PPARβ/δ agonists is less well-explored. Interestingly, dual- or pan-PPAR agonists, namely chiglitazar, saroglitazar, elafibranor, and lanifibranor, are gaining momentum with their optimistic outcomes in many diseases including type 2 diabetes, dyslipidemia, non-alcoholic fatty liver disease, and primary biliary cholangitis. Notably, the preclinical and clinical development for PPAR antagonists remains unacceptably deficient. We anticipate the future design of better PPAR modulators with minimal off-target effects, high selectivity, superior bioavailability, and pharmacokinetics. This will open new possibilities for PPAR ligands in medicine.
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Affiliation(s)
- Hong Sheng Cheng
- School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore 637551, Singapore.
| | - Wei Ren Tan
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, Singapore 308232, Singapore.
| | - Zun Siong Low
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, Singapore 308232, Singapore.
| | - Charlie Marvalim
- School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore 637551, Singapore.
| | - Justin Yin Hao Lee
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, Singapore 308232, Singapore.
| | - Nguan Soon Tan
- School of Biological Sciences, Nanyang Technological University Singapore, 60 Nanyang Drive, Singapore 637551, Singapore.
- Lee Kong Chian School of Medicine, Nanyang Technological University Singapore, 11 Mandalay Road, Singapore 308232, Singapore.
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Combined Oral Contraceptive Effects on Low-Grade Chronic Inflammatory Mediators in Women with Polycystic Ovary Syndrome: A Systematic Review and Meta-Analysis. Int J Inflam 2018; 2018:9591509. [PMID: 30595838 PMCID: PMC6286752 DOI: 10.1155/2018/9591509] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 10/04/2018] [Indexed: 02/03/2023] Open
Abstract
Polycystic ovary syndrome is associated with dyslipidemia, dysglycemia, metabolic syndrome, and low-grade chronic inflammation, which increase the risks for cardiovascular disease. Combined oral contraceptives may affect the mediators of low-grade chronic inflammation with potential additive risk in PCOS patients. This meta-analysis investigates the impact of oral contraceptive on markers of chronic inflammation in PCOS patients. Pubmed, Scopus, and Cochrane database were used to search studies reporting on this matter in the target population. Twenty seven studies were selected, including a total of 838 women. The data were expressed as the standardized mean difference. The random-effects model was used to summarize effect sizes. Heterogeneity was examined using Cochran's test (Q) and I2 statistics. Most of the preparations increased C-reactive protein (CRP) in PCOS patients (p >0.001). The increase in homocysteine levels was not significant (p >0.05). Follistatin significantly increased with pills containing cyproterone acetate (p= 0.008). Interleukin-6 changes were inconsistent and plasminogen activator inhibitor-1 decreased with pills containing desogestrel, norgestimate, and drospirenone. Collectively, the results of this review indicate that oral contraceptives modify most inflammatory markers of PCOS patients. However, the clinical implications are not clear yet and future studies must consider longer follow-up and the inclusion of objective clinical parameters.
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Bitzer J, Römer T, Lopes da Silva Filho A. The use of cyproterone acetate/ethinyl estradiol in hyperandrogenic skin symptoms - a review. EUR J CONTRACEP REPR 2017; 22:172-182. [PMID: 28447864 DOI: 10.1080/13625187.2017.1317339] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Hyperandrogenism affects approximately 10-20% of women of reproductive age. Hyperandrogenic skin symptoms such as hirsutism, acne, seborrhea and alopecia are associated with significant quality of life and psychological impairment. Women with abnormalities in androgen metabolism may have accompanying anovulation and/or polycystic ovary syndrome (PCOS), both of which have reproductive and metabolic implications if left untreated. Cyproterone acetate (CPA), combined with ethinylestradiol (EE), is indicated for the treatment of moderate to severe acne related to androgen-sensitivity (with or without seborrhea) and/or hirsutism, in women of reproductive age. OBJECTIVE To review the data on the efficacy and safety of CPA 2 mg/EE 35 μg for the treatment of hyperandrogenic skin symptoms in women. METHODS A non-systematic narrative review based on a literature search of the PubMed database. RESULTS Seventy-eight studies were identified. The majority of sufficiently powered studies show a high efficacy of CPA 2 mg/EE 35 μg in the treatment of severe acne and hirsutism. Studies show that therapeutic response in women with hirsutism requires a long-term approach and that hyperandrogenic skin symptoms in patients with PCOS are efficiently treated. Additional benefits include cycle control and, in some women, improvement in mood and perception of body image. Safety and tolerability data are summarized by the pharmacovigilance risk assessment committee (PRAC) of the European Medicine's Agency's (EMA). CONCLUSIONS This review provides a comprehensive overview about the efficacy of CPA 2 mg/EE 35 μg in the treatment of hyperandrogenic skin symptoms, thus allowing both health care professionals and women to balance the risks and benefits of treatment based on evidence.
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Affiliation(s)
- J Bitzer
- a University Hospital , Basel , Switzerland
| | - T Römer
- b Department of Obstetrics and Gynecology , Academic Hospital Weyertal, University Cologne , Germany
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Abstract
Metformin though primarily an antidiabetic drug, has found to play an important role in a number of cutaneous disorders. Because of its role in improving hyperinsulinemia, it has proven beneficial in hormonal acne, hidradenitis suppurativa (HS) and acanthosis nigricans. Its antiandrogenic properties further serve as an add-on to the conventional management of hirsutism associated with polycystic ovarian syndrome. Very recently, systemic usage of metformin for psoriasis and cutaneous malignancies has shown promising results. Interestingly, metformin has also been topically used in hyperpigmentary disorders with pertinent levels of improvement and happens to be the most recent addition to the list of dermatologic indications. Though an oral hypoglycemic agent to begin with, metformin today has proven to be a boon for dermatologists.
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Affiliation(s)
- Aditya Kumar Bubna
- Assistant Professor, Department of Dermatology, Sri Ramachandra University, Porur, Chennai, Tamil Nadu, India
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Cree-Green M, Bergman BC, Coe GV, Newnes L, Baumgartner AD, Bacon S, Sherzinger A, Pyle L, Nadeau KJ. Hepatic Steatosis is Common in Adolescents with Obesity and PCOS and Relates to De Novo Lipogenesis but not Insulin Resistance. Obesity (Silver Spring) 2016; 24:2399-2406. [PMID: 27804265 PMCID: PMC5117819 DOI: 10.1002/oby.21651] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 07/18/2016] [Accepted: 07/20/2016] [Indexed: 01/13/2023]
Abstract
OBJECTIVE Increased liver fat and type 2 diabetes are prevalent in women with polycystic ovarian syndrome (PCOS) and cause excess mortality, yet little is known about their development during adolescence. The objective of this study was to measure hepatic steatosis and related metabolic contributors in girls with obesity, with and without PCOS. METHODS Nondiabetic adolescents with obesity, 41 with PCOS (PCOS; age 15.0 [13.0-16.0] years, BMI 35.2 ± 0.61 kg/m2 ) and 30 without PCOS (OB; age 14.5 [13.0-17.0], BMI 33.2 ± 1.8), were studied. Visceral and liver fat were assessed with MRI. Serum measures included androgens and 16:1 and 18:1 N7 fatty acids specific to de novo lipogenesis. Adipose, hepatic, and peripheral insulin sensitivity (IS) were assessed with a four-phase hyperinsulinemic-euglycemic clamp with isotope tracers. RESULTS Forty-nine percent of the PCOS group had hepatic steatosis versus fourteen percent of the OB group (P = 0.02), and the PCOS group had higher N7 (43 ± 4 vs. 29 ± 5 nmol/g; P = 0.02). Peripheral IS was lower in PCOS (9.4 [7.2-12.3] vs. 14.5 [13.1-18.05 mg/lean kg/min]; P < 0.001) as was hepatic (P = 0.006) and adipose IS (P = 0.005). Percent liver fat correlated with N7 (R = 0.46, P = 0.02) and visceral fat (R = 0.42, P < 0.001), not androgens or peripheral IS. CONCLUSIONS Nearly 50% of nondiabetic girls with PCOS and obesity have hepatic steatosis, which relates to visceral fat and lipogenesis, but not to IS or androgens.
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Affiliation(s)
- Melanie Cree-Green
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
- Department of Pediatric Endocrinology, Barbara Davis Center for Childhood Diabetes, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA.
| | - Bryan C Bergman
- Department of Medicine, Division of Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Gregory V Coe
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Lindsey Newnes
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Amy D Baumgartner
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Samantha Bacon
- Department of Medicine, Division of Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Ann Sherzinger
- Department of Radiology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
| | - Laura Pyle
- Department of Pediatrics, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Department of Biostatistics and Informatics, Colorado School of Public Health, Aurora, Colorado, USA
| | - Kristen J Nadeau
- Department of Pediatrics, Division of Pediatric Endocrinology, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
- Department of Pediatric Endocrinology, Barbara Davis Center for Childhood Diabetes, University of Colorado Anschutz Medical Campus, Aurora, Colorado, USA
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Risk factors in adolescence for the development of polycystic ovary syndrome. DER GYNÄKOLOGE 2016. [DOI: 10.1007/s00129-016-3935-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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Castelo-Branco C, Hernández-Angeles C, Alvarez-Olivares L, Balasch J. Long-term satisfaction and tolerability with low-dose flutamide: a 20-year surveillance study on 120 hyperandrogenic women. Gynecol Endocrinol 2016; 32:723-727. [PMID: 27176209 DOI: 10.1080/09513590.2016.1184640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE To evaluate the long-term safety, satisfaction and tolerability of flutamide therapy for female hyperandrogenism. DESIGN A 20-year surveillance study. METHODS Setting: Gynecology Department in a teaching hospital. PATIENTS Hyperandrogenic women complaining for hirsutism treatment were followed between February 1995 and April 2015. INTERVENTIONS Women received flutamide 125 or 250 mg/day alone (n = 55) or combined with oral contraceptives (n = 65). MAIN OUTCOME MEASURES Adverse events, safety, tolerability satisfaction and efficacy were assessed every 6 months during all the follow-up. Lab tests including liver and lipid profiles were also recorded in each control. RESULTS Patients under flutamide therapy showed significant improvements in hirsutism scores after 6 months of treatment with a maximum effect at 12 months that was maintained during all the therapy time. Satisfaction reported by patients with the efficacy of the drug in a visual scale was also high. A total of 54.2 % women presented one or more adverse effects during the follow-up; 33.3% showed at least one adverse effect possibly related with the study drug; and 24.1% withdrew from the study because of adverse effects. During the follow-up, as many as 89.9 % of patients abandoned flutamide. Reasons include: questions linked to medical problems (50%), attempt pregnancy (4%) and significant improvement in the symptomatology (35.8%). CONCLUSIONS Flutamide is very effective for hirsutism treatment; however, adverse effects are very frequent and affect compliance.
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Affiliation(s)
- Camil Castelo-Branco
- a Clinic Institute of Gynecology, Obstetrics and Neonatology, Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona , Barcelona , Spain and
| | - Claudio Hernández-Angeles
- b Hospital Ginecoobstetricia Número 4 "Luis Castelazo Ayala", Instituto Mexicano del Seguro Social , México DF , Mexico
| | - Lina Alvarez-Olivares
- a Clinic Institute of Gynecology, Obstetrics and Neonatology, Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona , Barcelona , Spain and
| | - Juan Balasch
- a Clinic Institute of Gynecology, Obstetrics and Neonatology, Hospital Clinic-Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), University of Barcelona , Barcelona , Spain and
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Franks S. Can Animal Models of PCOS Help Point the Way Towards Early and Effective Therapeutic Intervention in Women With the Syndrome? Endocrinology 2015; 156:2371-3. [PMID: 26091428 DOI: 10.1210/en.2015-1420] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Stephen Franks
- Imperial College London, Institute of Reproductive and Developmental Biology, Hammersmith Hospital, London W12 0NN, United Kingdom
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El-Gamal OM, Gameel TA, Ghoneem A, Soliman MG, Abo-El-Enen M, El-Hitham AA, El-Rasheedy M, Elbendary MA, Sabaa M. Perioperative use of cyproterone acetate with transurethral resection of large prostate: preliminary results. J Endourol 2015; 29:569-74. [PMID: 25316503 DOI: 10.1089/end.2014.0526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
PURPOSE To assess the impact of short-term treatment with cyproterone acetate (CPA) on intraoperative and early postoperative complications of transurethral resection of relatively large prostate. PATIENTS AND METHODS We recruited patients with prostate size of 60-90 g and randomized them into two equal groups. The first one had 50 mg of CPA orally twice a day (bds) for 2 weeks before the operation and maintained it for an extra week postoperatively. The other group received placebo. All patients underwent monopolar transurethral prostatectomy (M-TURP) and the prostatic chips were stained for CD34 specific for nascent blood vessels. RESULTS Ninety-five patients were included. Mean patient age was 60.88±2.5 years and mean prostate size was 72.76±7.21 g. CPA was well tolerated with no serious adverse effects. The mean resection time and the mean weight of the resected tissue were comparable between the two groups. Intraoperative blood loss, fluid absorption, and blood loss per gram of resected tissue (259.47±78.27 mL, 787.38±300.56 mL, and 14.87±4.02 mL/g and 327.25±98.97 mL, 937.4±350.2 mL, and 17.08±5.55 mL/g, respectively) were significantly lower in the treatment group (p<0.05). In addition, excessive postoperative bleeding was encountered in one case in the treatment group and in seven in the control (p<0.05). Finally, the histopathological study revealed that the mean microvessel density in each of the suburethral portion and the hyperplastic nodules of the prostate was significantly lower in the CPA group (p<0.001). CONCLUSION The perioperative use of CPA with M-TURP of a relatively large prostate may help in decreasing the perioperative bleeding and fluid absorption that usually take place during this procedure.
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van Zuuren EJ, Fedorowicz Z, Carter B, Pandis N. Interventions for hirsutism (excluding laser and photoepilation therapy alone). Cochrane Database Syst Rev 2015; 2015:CD010334. [PMID: 25918921 PMCID: PMC6481758 DOI: 10.1002/14651858.cd010334.pub2] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
BACKGROUND Hirsutism occurs in 5% to 10% of women of reproductive age when there is excessive terminal hair growth in androgen-sensitive areas (male pattern). It is a distressing disorder with a major impact on quality of life. The most common cause is polycystic ovary syndrome. There are many treatment options, but it is not clear which are most effective. OBJECTIVES To assess the effects of interventions (except laser and light-based therapies alone) for hirsutism. SEARCH METHODS We searched the Cochrane Skin Group Specialised Register, CENTRAL (2014, Issue 6), MEDLINE (from 1946), EMBASE (from 1974), and five trials registers, and checked reference lists of included studies for additional trials. The last search was in June 2014. SELECTION CRITERIA Randomised controlled trials (RCTs) in hirsute women with polycystic ovary syndrome, idiopathic hirsutism, or idiopathic hyperandrogenism. DATA COLLECTION AND ANALYSIS Two independent authors carried out study selection, data extraction, 'Risk of bias' assessment, and analyses. MAIN RESULTS We included 157 studies (sample size 30 to 80) comprising 10,550 women (mean age 25 years). The majority of studies (123/157) were 'high', 30 'unclear', and four 'low' risk of bias. Lack of blinding was the most frequent source of bias. Treatment duration was six to 12 months. Forty-eight studies provided no usable or retrievable data, i.e. lack of separate data for hirsute women, conference proceedings, and losses to follow-up above 40%.Primary outcomes, 'participant-reported improvement of hirsutism' and 'change in health-related quality of life', were addressed in few studies, and adverse events in only half. In most comparisons there was insufficient evidence to determine if the number of reported adverse events differed. These included known adverse events: gastrointestinal discomfort, breast tenderness, reduced libido, dry skin (flutamide and finasteride); irregular bleeding (spironolactone); nausea, diarrhoea, bloating (metformin); hot flushes, decreased libido, vaginal dryness, headaches (gonadotropin-releasing hormone (GnRH) analogues)).Clinician's evaluation of hirsutism and change in androgen levels were addressed in most comparisons, change in body mass index (BMI) and improvement of other clinical signs of hyperandrogenism in one-third of studies.The quality of evidence was moderate to very low for most outcomes.There was low quality evidence for the effect of two oral contraceptive pills (OCPs) (ethinyl estradiol + cyproterone acetate versus ethinyl estradiol + desogestrel) on change from baseline of Ferriman-Gallwey scores. The mean difference (MD) was -1.84 (95% confidence interval (CI) -3.86 to 0.18).There was very low quality evidence that flutamide 250 mg, twice daily, reduced Ferriman-Gallwey scores more effectively than placebo (MD -7.60, 95% CI -10.53 to -4.67 and MD -7.20, 95% CI -10.15 to -4.25). Participants' evaluations in one study with 20 participants confirmed these results (risk ratio (RR) 17.00, 95% CI 1.11 to 259.87).Spironolactone 100 mg daily was more effective than placebo in reducing Ferriman-Gallwey scores (MD -7.69, 95% CI -10.12 to -5.26) (low quality evidence). It showed similar effectiveness to flutamide in two studies (MD -1.90, 95% CI -5.01 to 1.21 and MD 0.49, 95% CI -1.99 to 2.97) (very low quality evidence), as well as to finasteride in two studies (MD 1.49, 95% CI -0.58 to 3.56 and MD 0.40, 95% CI -1.18 to 1.98) (low quality evidence).Although there was very low quality evidence of a difference in reduction of Ferriman-Gallwey scores for finasteride 5 mg to 7.5 mg daily versus placebo (MD -5.73, 95% CI -6.87 to -4.58), it was unlikely it was clinically meaningful. These results were reinforced by participants' assessments (RR 2.06, 95% CI 0.99 to 4.29 and RR 11.00, 95% CI 0.69 to 175.86). However, finasteride showed inconsistent results in comparisons with other treatments, and no firm conclusions could be reached.Metformin demonstrated no benefit over placebo in reduction of Ferriman-Gallwey scores (MD 0.05, 95% CI -1.02 to 1.12), but the quality of evidence was low. Results regarding the effectiveness of GnRH analogues were inconsistent, varying from minimal to important improvements.We were unable to pool data for OCPs with cyproterone acetate 20 mg to 100 mg due to clinical and methodological heterogeneity between studies. However, addition of cyproterone acetate to OCPs provided greater reductions in Ferriman-Gallwey scores.Two studies, comparing finasteride 5 mg and spironolactone 100 mg, did not show differences in participant assessments and reduction of Ferriman-Gallwey scores (low quality evidence). Ferriman-Gallwey scores from three studies comparing flutamide versus metformin could not be pooled (I² = 62%). One study comparing flutamide 250 mg twice daily with metformin 850 mg twice daily for 12 months, which reached a higher cumulative dosage than two other studies evaluating this comparison, showed flutamide to be more effective (MD -6.30, 95% CI -9.83 to -2.77) (very low quality evidence). Data showing reductions in Ferriman-Gallwey scores could not be pooled for four studies comparing finasteride with flutamide as the results were inconsistent (I² = 67%).Studies examining effects of hypocaloric diets reported reductions in BMI, but which did not result in reductions in Ferriman-Gallwey scores. Although certain cosmetic measures are commonly used, we did not identify any relevant RCTs. AUTHORS' CONCLUSIONS Treatments may need to incorporate pharmacological therapies, cosmetic procedures, and psychological support. For mild hirsutism there is evidence of limited quality that OCPs are effective. Flutamide 250 mg twice daily and spironolactone 100 mg daily appeared to be effective and safe, albeit the evidence was low to very low quality. Finasteride 5 mg daily showed inconsistent results in different comparisons, therefore no firm conclusions can be made. As the side effects of antiandrogens and finasteride are well known, these should be accounted for in any clinical decision-making. There was low quality evidence that metformin was ineffective for hirsutism and although GnRH analogues showed inconsistent results in reducing hirsutism they do have significant side effects.Further research should consist of well-designed, rigorously reported, head-to-head trials examining OCPs combined with antiandrogens or 5α-reductase inhibitor against OCP monotherapy, as well as the different antiandrogens and 5α-reductase inhibitors against each other. Outcomes should be based on standardised scales of participants' assessment of treatment efficacy, with a greater emphasis on change in quality of life as a result of treatment.
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Affiliation(s)
- Esther J van Zuuren
- Leiden University Medical CenterDepartment of DermatologyPO Box 9600B1‐QLeidenNetherlands2300 RC
| | | | - Ben Carter
- King's College London; Institute of Psychiatry, Psychology & NeuroscienceBiostatistics and Health InformaticsDenmark HillLondonUK
| | - Nikolaos Pandis
- University of BernDepartment of Orthodontics and Dentofacial OrthopedicsFreiburgstr. 7BernSwitzerlandCH‐3010
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Ibáñez L, Ong KK, López-Bermejo A, Dunger DB, de Zegher F. Hyperinsulinaemic androgen excess in adolescent girls. Nat Rev Endocrinol 2014; 10:499-508. [PMID: 24776733 DOI: 10.1038/nrendo.2014.58] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Hyperinsulinaemic androgen excess is the most common cause of hirsutism, acne and menstrual irregularity in adolescent girls. Here, we propose that the disorder frequently originates from an absolute or relative excess of lipids in adipose tissue, and from associated changes in insulin sensitivity, gonadotropin secretion and ovarian androgen release. Girls from populations with genotypes attuned to nutritionally harsh conditions seem to be particularly vulnerable to the development of hyperinsulinaemic androgen excess in today's obesogenic environment. We propose that hirsutism, hyperandrogenaemia and menstrual irregularity (≥2 years after menarche) is used as a diagnostic triad for the disorder. No pharmacological therapy has been approved for girls with androgen excess; however, lifestyle intervention is essential to reduce adiposity. In girls without obesity who are not sexually active, insulin sensitization has more broadly normalizing effects than estradiol-progestogen combinations. The early recognition of girls at risk of developing hyperinsulinaemic androgen excess might enable prevention in childhood.
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Affiliation(s)
- Lourdes Ibáñez
- Endocrinology Unit, Hospital Sant Joan de Déu, University of Barcelona, Passeig de Sant Joan de Déu, 2, 08950 Esplugues de Llobregat, Barcelona, Spain
| | - Ken K Ong
- MRC Epidemiology Unit, Box 285, Institute of Metabolic Science, Cambridge Biomedical Campus, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Abel López-Bermejo
- Paediatric Endocrinology, Dr Josep Trueta Hospital and Girona Institute for Biomedical Research, Avenue de França s/n, 17007 Girona, Spain
| | - David B Dunger
- Department of Paediatrics, Box 116, Level 8, Addenbrooke's Hospital Hills Road, University of Cambridge, Cambridge CB2 0QQ, UK
| | - Francis de Zegher
- Paediatric Endocrinology, University Hospital Gasthuisberg, University of Leuven, Herestraat 49, 3000 Leuven, Belgium
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Abstract
This Hospital Pharmacy feature is extracted from Off-Label Drug Facts, a publication available from Wolters Kluwer Health. Off-Label Drug Facts is a practitioner-oriented resource for information about specific drug uses that are unapproved by the US Food and Drug Administration. This new guide to the literature enables the health care professional or clinician to quickly identify published studies on off-label uses and determine if a specific use is rational in a patient care scenario. References direct the reader to the full literature for more comprehensive information before patient care decisions are made. Direct questions or comments regarding Off-Label Drug Uses to jgeneral@ku.edu.
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Affiliation(s)
- Joyce A Generali
- Editor-in-Chief, Hospital Pharmacy , and Clinical Professor, Emeritus, Department of Pharmacy Practice, University of Kansas, School of Pharmacy , Kansas City/Lawrence, Kansas , e-mail:
| | - Dennis J Cada
- Founder and Contributing Editor, The Formulary , and Editor, Off-Label Drug Facts , e-mail:
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Tartagni MV, Alrasheed H, Damiani GR, Montagnani M, De Salvia MA, De Pergola G, Tartagni M, Loverro G. Intermittent low-dose finasteride administration is effective for treatment of hirsutism in adolescent girls: a pilot study. J Pediatr Adolesc Gynecol 2014; 27:161-5. [PMID: 24559619 DOI: 10.1016/j.jpag.2013.09.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 09/17/2013] [Accepted: 09/17/2013] [Indexed: 11/29/2022]
Abstract
STUDY OBJECTIVE Hirsutism has negative impact on adolescent psychosocial development for both cosmetic and endocrine reasons. This study evaluated the effectiveness of a new intermittent, low-dose finasteride regimen consisting of 2.5 mg of drug given every 3 days (1 day of treatment, 2 days of drug withdrawal) for 6 months in girls with hirsutism by polycystic ovarian syndrome (PCOS) or idiopathic hirsutism (IH). DESIGN AND PARTICIPANTS Twenty-eight girls (15-19 y old) with hirsutism were randomly assigned to 2 treatment groups and treated for 6 months. Fourteen patients (7 with IH, 7 with PCOS) received finasteride; fourteen patients (7 with IH, 7 with PCOS) received placebo. Hirsutism score (HS), clinical, and hormonal effects were compared between the 2 groups. RESULTS In patients treated with finasteride, the HS value at 6 months was 52.9% lower than that observed at baseline in girls with IH, and 52.8% lower in girls with PCOS (P < .0001 for both). Similarly, the 3α-17 β-androstenediol glucuronide serum levels were decreased by 34.8% in patients with IH, and by 47.5% in patients with PCOS (P < .0001, respectively). Finasteride treatment was well tolerated and did not alter values of BMI, serum levels of sexual hormones, metabolic parameters related to liver and kidney function as well as glycemic and lipidic asset. CONCLUSIONS A low-dose of finasteride, given every 3 days, reduces the HS in young patients affected by PCOS or IH. Compared with conventional continuous finasteride administration, the intermittent low-dose regimen has similar efficacy with the advantage to be safer and less expensive.
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Affiliation(s)
| | - Hala Alrasheed
- Faculty of Medicine, University of Kosice, Kosice, Slovakia
| | - Gianluca R Damiani
- Department of Obstetrics and Gynecology, Hospital of Sondrio, Sondrio, Italy
| | - Monica Montagnani
- Department of Biomedical Sciences and Human Oncology, Faculty of Medicine, University of Bari "Aldo Moro", Bari, Italy.
| | - Maria A De Salvia
- Department of Biomedical Sciences and Human Oncology, Faculty of Medicine, University of Bari "Aldo Moro", Bari, Italy
| | - Giovanni De Pergola
- Department of Biomedical Sciences and Human Oncology, Faculty of Medicine, University of Bari "Aldo Moro", Bari, Italy
| | - Massimo Tartagni
- Department of Biomedical Sciences and Human Oncology, Faculty of Medicine, University of Bari "Aldo Moro", Bari, Italy
| | - Giuseppe Loverro
- Department of Biomedical Sciences and Human Oncology, Faculty of Medicine, University of Bari "Aldo Moro", Bari, Italy
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Badr D, Kurban M, Abbas O. Metformin in dermatology: an overview. J Eur Acad Dermatol Venereol 2013; 27:1329-35. [PMID: 23437788 DOI: 10.1111/jdv.12116] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2012] [Accepted: 01/21/2013] [Indexed: 11/26/2022]
Abstract
For several decades, metformin has been used as an oral hypoglycaemic agent, where it is the first line of treatment in overweight and obese type 2 diabetic patients. This is because it decreases the hepatic glucose output and acts as an insulin sensitizer by increasing the glucose utilization by muscles and adipocytes. As a result of the improvement in glycaemic control, serum insulin concentrations decline slightly, thus improving hyperinsulinaemia and its signs. In addition, it has been shown that metformin has platelet anti-aggregating and antioxidant effects. These pharmacological properties have allowed metformin to be effective in non-diabetic situations including cutaneous conditions. This is an evidence-based review on the use of metformin in the treatment of skin disorders such as hirsutism, acne, hidradenitis suppurativa, acanthosis nigricans, psoriasis, skin cancer, among others. In addition, cutaneous side-effects such as leukocytoclastic vasculitis, bullous pemphigoid, psoriasiform drug eruption, lichen planus and acute alopecia have been associated with metformin use and are discussed in the article.
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Affiliation(s)
- D Badr
- Department of Dermatology, American University of Beirut Medical Center, Beirut, Lebanon
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Current world literature. Curr Opin Endocrinol Diabetes Obes 2012; 19:233-47. [PMID: 22531108 DOI: 10.1097/med.0b013e3283542fb3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bechtold S, Dalla Pozza R, Putzker S, Roeb J, Buckel M, Weissenbacher C, Schmidt H. Effect of antiandrogen treatment on bone density and bone geometry in adolescents with polycystic ovary syndrome. J Pediatr Adolesc Gynecol 2012; 25:175-80. [PMID: 22260890 DOI: 10.1016/j.jpag.2011.11.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2011] [Revised: 11/23/2011] [Accepted: 11/23/2011] [Indexed: 01/20/2023]
Abstract
STUDY OBJECTIVES To determine the impact of antiandrogen treatment on bone density and geometry. DESIGN Prospective cohort investigation. SETTING Academic research institute. PARTICIPANTS 38 (age 14.96 ± 1.42 yr) subjects with PCOS. INTERVENTIONS Treated with metformin (n = 17) or metformin and antiandrogen (n = 21). MAIN OUTCOME MEASURE Bone density and geometry parameters at baseline and after a mean duration of 1.92 ± 0.88 years using peripheral quantitative computed tomography of the forearm. RESULTS At baseline, z-scores for trabecular (0.53 ± 1.02) and cortical BMD (0.79 ± 1.55) as well as total (0.62 ± 1.07) and medullary cross sectional area (CSA) (0.79 ± 1.29) were elevated. Cortical CSA (-0.01 ± 1.10) and bone strength strain index (SSI) z-scores (-0.01 ± 1.10) were normal. Muscle CSA z-score (0.12 ± 1.70) was normal, but grip strength (-1.60 ± 1.15) was significantly reduced. There were no significant changes within and between the two treatment options in respect to bone density and bone geometry parameters. With antiandrogen treatment, free androgen index (FAI) was significantly lower and grip strength further decreased (P < .001). CONCLUSIONS No significant changes in bone mineral density and geometry parameters took place in PCOS women irrespective of treatment followed over a time of almost two years. General muscle weakness expressed as low grip strength may influence further bone development in PCOS.
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Affiliation(s)
- Susanne Bechtold
- Division of Pediatric Endocrinology, University Children's Hospital, Ludwig-Maximilian University, Munich, Germany.
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Fauser BCJM, Bouchard P. Uncertainty remains in women with PCOS regarding the increased incidence of cardiovascular disease later in life, despite the indisputable presence of multiple cardiovascular risk factors at a young age. J Clin Endocrinol Metab 2011; 96:3675-7. [PMID: 22143833 DOI: 10.1210/jc.2011-2935] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
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