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Dive into the research topics where Peter G. McGovern is active.

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Featured researches published by Peter G. McGovern.


Obstetrics & Gynecology | 2005

Menopausal symptoms and treatment-related effects of estrogen and progestin in the women's health initiative

Vanessa M. Barnabei; Barbara B. Cochrane; Aaron K. Aragaki; Ingrid Nygaard; R.Stan Williams; Peter G. McGovern; Ronald L. Young; Ellen Wells; Mary Jo O'Sullivan; Bertha Chen; Robert S. Schenken; Susan R. Johnson

OBJECTIVE: To estimate the effects of estrogen plus progestin (E+P) therapy on menopausal symptoms, vaginal bleeding, gynecologic surgery rates, and treatment-related adverse effects in postmenopausal women. METHODS: Randomized, double-blind, placebo-controlled trial of 16,608 postmenopausal women, ages 50–79 (mean ± standard deviation 63.3 ± 7.1) years, with intact uterus, randomized to one tablet per day containing 0.625 mg conjugated equine estrogens plus 2.5 mg medroxyprogesterone acetate (n = 8,506) or placebo (n = 8,102), and followed for a mean of 5.6 years. Change in symptoms and treatment-related effects were analyzed at year 1 in all participants. Bleeding and gynecologic surgery rates were analyzed through study close-out. RESULTS: Baseline symptoms did not differ between the treatment groups. More women assigned to E+P than placebo reported relief of hot flushes (85.7% versus 57.7%, respectively; odds ratio 4.40; 95% confidence interval 3.40–5.71), night sweats (77.6% versus 57.4%; 2.58; 2.04–3.26), vaginal or genital dryness (74.1% versus 54.6%; 2.40; 1.90–3.02), joint pain or stiffness (47.1% versus 38.4%; 1.43; 1.24–1.64), and general aches or pains (49.3% versus 43.7%; 1.25; 1.08–1.44). Women asymptomatic at baseline who were assigned to E+P more often developed breast tenderness (9.3% versus 2.4%, respectively; 4.26; 3.59–5.04), vaginal or genital discharge (4.1% versus 1.0%; 4.47; 3.44–5.81), vaginal or genital irritation (4.2% versus 2.8%; 1.52; 1.27–1.81), and headaches (5.8% versus 4.7%; 1.26; 1.08–1.46) than women on placebo. Estrogen plus progestin treatment prevented the onset of new musculoskeletal symptoms. Vaginal bleeding was reported by 51% of women on E+P and 5% of women on placebo at 6 months; most bleeding was reported as spotting. Gynecologic surgeries (hysterectomy and dilation and curettage) were performed more frequently in women assigned to E+P (3.1% versus 2.5% for hysterectomy, hazard ratio = 1.23, P = .026; 5.4% versus 2.4% for dilation and curettage, hazard ratio = 2.23, P < .001). CONCLUSION: Estrogen plus progestin relieved some menopausal symptoms, such as vasomotor symptoms and vaginal or genital dryness, but contributed to treatment-related effects, such as bleeding, breast tenderness, and an increased likelihood of gynecologic surgery. LEVEL OF EVIDENCE: I


The Journal of Clinical Endocrinology and Metabolism | 2010

Total testosterone assays in women with polycystic ovary syndrome: Precision and correlation with hirsutism

Richard S. Legro; William D. Schlaff; Michael P. Diamond; Christos Coutifaris; Peter R. Casson; Robert G. Brzyski; Gregory M. Christman; J. C. Trussell; Stephen A. Krawetz; Peter J. Snyder; Dana A. Ohl; Sandra Ann Carson; Michael P. Steinkampf; Bruce R. Carr; Peter G. McGovern; Gabriella G. Gosman; John E. Nestler; Evan R. Myers; Nanette Santoro; Esther Eisenberg; M. Zhang; Heping Zhang

CONTEXT There is no standardized assay of testosterone in women. Liquid chromatography mass spectrometry (LC/MS) has been proposed as the preferable assay by an Endocrine Society Position Statement. OBJECTIVE The aim was to compare assay results from a direct RIA with two LC/MS. DESIGN AND SETTING We conducted a blinded laboratory study including masked duplicate samples at three laboratories--two academic (University of Virginia, RIA; and Mayo Clinic, LC/MS) and one commercial (Quest, LC/MS). PARTICIPANTS AND INTERVENTIONS Baseline testosterone levels from 596 women with PCOS who participated in a large, multicenter, randomized controlled infertility trial performed at academic health centers in the United States were run by varying assays, and results were compared. MAIN OUTCOME MEASURE We measured assay precision and correlation and baseline Ferriman-Gallwey hirsutism scores. RESULTS Median testosterone levels were highest with RIA. The correlations between the blinded samples that were run in duplicate were comparable. The correlation coefficient (CC) between LC/MS at Quest and Mayo was 0.83 [95% confidence interval (CI), 0.80-0.85], between RIA and LC/MS at Mayo was 0.79 (95% CI, 0.76-0.82), and between RIA and LC/MS at Quest was 0.67 (95% CI, 0.63-0.72). Interassay variation was highest at the lower levels of total testosterone (≤50 ng/dl). The CC for Quest LC/MS was significantly different from those derived from the other assays. We found similar correlations between total testosterone levels and hirsutism score with the RIA (CC=0.24), LC/MS at Mayo (CC=0.15), or Quest (CC=0.17). CONCLUSIONS A testosterone RIA is comparable to LC/MS assays. There is significant variability between LC/MS assays and poor precision with all assays at low testosterone levels.


Obstetrical & Gynecological Survey | 2008

A Review of Kallmann Syndrome : Genetics, Pathophysiology, and Clinical Management

Adam J. Fechner; Shirley Fong; Peter G. McGovern

Kallmann syndrome is a genetic disorder with the hallmarks of anosmia and hypogonadotrophic hypogonadism. It has a male preponderance. With the elucidation of the genetic pathways involved, affected females and inheritance patterns are becoming more clearly identified. It is an eminently treatable disorder, but it must first be recognized by the physician. With treatment, favorable reproductive outcomes can be attained in addition to maturation of secondary sex characteristics. Target Audience: Obstetricians & Gynecologists, Family Physicians Learning Objectives: After completion of this article, the reader should be able to recall that Kallmann syndrome (KS) has been recognized for many years, state that it is a genetic disorder, and explain that the combination of hypogonadism and anosmia can be treated.


American Journal of Cardiology | 2003

Usefulness of prior hysterectomy as an independent predictor of Framingham risk score (The Women’s Health Initiative)

Judith Hsia; David Barad; Karen L. Margolis; Rebecca J. Rodabough; Peter G. McGovern; Marian C. Limacher; Albert Oberman; Sylvia Smoller

The association of hysterectomy with increased coronary risk is controversial, and previous studies have reached differing conclusions as to whether the excess risk is confined to women who have also undergone bilateral oophorectomy. This analysis uses the Framingham algorithm to evaluate the hypothesis that hysterectomy with or without ovarian preservation is associated with increased coronary risk, using a cross-sectional analysis of baseline data from 1,501 participants of the Womens Health Initiative. Framingham risk scores, derived from the algorithm in the National Cholesterol Education Program Adult Treatment Panel III guidelines, which include age, smoking, systolic blood pressure, total and high-density lipoprotein cholesterol, were determined in a subgroup of Womens Health Initiative participants with measured plasma lipids and known ovariectomy status. Women with hysterectomy had fewer years of education than those without hysterectomy (30% with college degree vs 41%, p <0.0001) and higher body mass index (29 vs 28 kg/m(2), p <0.0001), consumed less alcohol, exercised less, and had a higher Framingham risk of myocardial infarction or coronary death (46% vs 41% with 10-year risk >/=4%, p = 0.04). In multivariate analysis, hysterectomy with bilateral oophorectomy was an independent predictor of Framingham risk (p = 0.04), whereas hysterectomy with ovarian preservation was not.


Obstetrics & Gynecology | 2012

Endometrial Shedding Effect on Conception and Live Birth in Women With Polycystic Ovary Syndrome

Michael P. Diamond; Michael Kruger; Nanette Santoro; Heping Zhang; Peter R. Casson; William Schlaff; Christos Coutifaris; Robert G. Brzyski; Gregory M. Christman; Bruce R. Carr; Peter G. McGovern; Michael P. Steinkampf; Gabriella G. Gosman; John E. Nestler; Sandra Ann Carson; Evan E. Myers; Esther Eisenberg; Richard S. Legro

OBJECTIVE: To estimate whether progestin-induced endometrial shedding, before ovulation induction with clomiphene citrate, metformin, or a combination of both, affects ovulation, conception, and live birth rates in women with polycystic ovary syndrome (PCOS). METHODS: A secondary analysis of the data from 626 women with PCOS from the Eunice Kennedy Shriver National Institute of Child Health and Human Development Cooperative Reproductive Medicine Network trial was performed. Women had been randomized to up to six cycles of clomiphene citrate alone, metformin alone, or clomiphene citrate plus metformin. Women were assessed for occurrence of ovulation, conception, and live birth in relation to prior bleeding episodes (after either ovulation or exogenous progestin-induced withdrawal bleed). RESULTS: Although ovulation rates were higher in cycles preceded by spontaneous endometrial shedding than after anovulatory cycles (with or without prior progestin withdrawal), both conception and live birth rates were significantly higher after anovulatory cycles without progestin-induced withdrawal bleeding (live births per cycle: spontaneous menses 2.2%; anovulatory with progestin withdrawal 1.6%; anovulatory without progestin withdrawal 5.3%; P<.001). The difference was more marked when rate was calculated per ovulation (live births per ovulation: spontaneous menses 3.0%; anovulatory with progestin withdrawal 5.4%; anovulatory without progestin withdrawal 19.7%; P<.001). CONCLUSION: Conception and live birth rates are lower in women with PCOS after a spontaneous menses or progestin-induced withdrawal bleeding as compared with anovulatory cycles without progestin withdrawal. The common clinical practice of inducing endometrial shedding with progestin before ovarian stimulation may have an adverse effect on rates of conception and live birth in anovulatory women with PCOS. LEVEL OF EVIDENCE: II


The Journal of Clinical Endocrinology and Metabolism | 2016

Vitamin D Status Relates to Reproductive Outcome in Women With Polycystic Ovary Syndrome: Secondary Analysis of a Multicenter Randomized Controlled Trial.

Lubna Pal; Heping Zhang; Joanne Williams; Nanette Santoro; Michael P. Diamond; William D. Schlaff; Christos Coutifaris; Sandra Ann Carson; Michael P. Steinkampf; Bruce R. Carr; Peter G. McGovern; Gabriella G. Gosman; John E. Nestler; Evan R. Myers; Richard S. Legro

CONTEXT Experimental evidence supports a relevance of vitamin D (VitD) for reproduction; however, data in humans are sparse and inconsistent. OBJECTIVE To assess the relationship of VitD status with ovulation induction (OI) outcomes in women with polycystic ovary syndrome (PCOS). DESIGN A retrospective cohort. SETTING Secondary analysis of randomized controlled trial data. PARTICIPANTS Participants in the Pregnancy in PCOS I (PPCOS I) randomized controlled trial (n = 540) met the National Institutes of Health diagnostic criteria for PCOS. INTERVENTIONS Serum 25OHD levels were measured in stored sera. MAIN OUTCOME MEASURES Primary, live birth (LB); secondary, ovulation and pregnancy loss after OI. RESULTS Likelihood for LB was reduced by 44% for women if the 25OHD level was < 30 ng/mL (<75 nmol/L; odds ratio [OR], 0.58 [0.35-0.92]). Progressive improvement in the odds for LB was noted at thresholds of ≥38 ng/mL (≥95 nmol/L; OR, 1.42 [1.08-1.8]), ≥40 ng/mL (≥100 nmol/L; OR, 1.51 [1.05-2.17]), and ≥45 ng/mL (≥112.5 nmol/L; OR, 4.46 [1.27-15.72]). On adjusted analyses, VitD status was an independent predictor of LB and ovulation after OI. CONCLUSIONS In women with PCOS, serum 25OHD was an independent predictor of measures of reproductive success after OI. Our data identify reproductive thresholds for serum 25OHD that are higher than recommended for the nonpregnant population.


Fertility and Sterility | 2009

Antral follicle count is a significant predictor of livebirth in in vitro fertilization cycles

Priya Maseelall; Armando E. Hernandez-Rey; Cheongeun Oh; Tanya Maagdenberg; David H. McCulloh; Peter G. McGovern

In the first published demonstration that the antral follicle count (AFC) predicts live birth after in vitro fertilization-embryo transfer (IVF-ET), we found that an AFC of >or=11 was a strong positive predictor of live birth. The AFC should not be used to exclude women from IVF treatment; however, it is a very useful instrument for patient counseling and determining appropriate treatment protocols and gonadotropin dosing in IVF cycles.


Obstetrical & Gynecological Survey | 2015

In vitro maturation and its role in clinical assisted reproductive technology.

May-Tal Sauerbrun-Cutler; Mario Vega; Martin D. Keltz; Peter G. McGovern

Importance In vitro maturation (IVM) refers to maturation in culture of immature oocytes that may or may not have been exposed to short courses of gonadotropins. Approximately 5000 live births have occurred as a result of IVM since the 1970s. Currently, IVM is reserved for carefully selected patients at risk for ovarian hyperstimulation syndrome and for those with contraindications to hormone administration. The technology is still considered experimental. Objective The objective of this study was to identify a role for IVM and discuss clinical practices based on the current literature. Evidence Acquisition We conducted a literature review of all available and published data. Relevant studies were identified using PubMed and MEDLINE. Search parameters included “in vitro maturation or IVM” and “oocyte maturation.” Multiple case-control studies were identified comparing reproductive outcomes between conventional in vitro fertilization (IVF) and IVM, but no randomized controlled trials have been reported to date comparing IVF and IVM. Results Results from retrospective and prospective observational studies have shown decreased live birth and implantation rates in comparison to conventional IVF/intracytoplasmic sperm injection for patients with various indications for IVM. However, rates of ovarian hyperstimulation syndrome were significantly reduced in studies with patients with polycystic ovary syndrome. Conclusions Although the pregnancy rate is lower than conventional IVF, IVM is a safer and simpler alternative to conventional IVF. Future research needs to focus on improving implantation and live birth rates before universal implementation. Target Audience Obstetricians and gynecologists, family physicians Learning Objectives After completing this CME activity, physicians should be better able to describe IVM in clinical practice and how it differs from conventional assisted reproductive technology, analyze the clinical application of IVM in specific populations such as patients with polycystic ovary syndrome and those with malignancy and contraindications to estrogen, and discuss the developmental outcomes of IVM births.


Infectious Diseases in Obstetrics & Gynecology | 2003

Risk factors for hepatitis C infection among sexually transmitted disease-infected, inner city obstetric patients

Youyin Choy; Lisa Gittens-Williams; Joseph J. Apuzzio; Joan Skurnick; Carl Zollicoffer; Peter G. McGovern

Objective: To test the hypothesis that our inner city obstetric patients who have been infected with sexually transmitted diseases (STDs) will have a higher prevalence of hepatitis C virus infection than the general population and to identify specific risk factors and high-risk groups. Methods: All patients in our prenatal clinic (July 1997–April 1999) who tested positive for one or more STDs were asked to return for hepatitis C antibody testing. Medical charts of all patients who returned for hepatitis C testing were reviewed. Results: A total of 106 patients with STDs were tested for hepatitis C. Positive screening tests for anti-hepatitis C antibody were found in 6.6% (7/106) of the patients (95% CI = 2.7–13.1%). This frequency is significantly higher than the hepatitis C prevalence (1.8%) in the general United States population (p = 0.006). Multiple logistic regression analysis confirmed only older age (p = 0.016) and positive HIV status (p = 0.023) to be significant predictors of hepatitis C infection. Conclusions: Inner city STD-infected obstetric patients are at high risk for hepatitis C infection compared with the general population. Increasing age and HIV-positive status are risk factors which are significantly associated with hepatitis C infection.


The Journal of Clinical Endocrinology and Metabolism | 2011

Metformin and/or clomiphene do not adversely affect liver or renal function in women with polycystic ovary syndrome

Mira Aubuchon; Allen R. Kunselman; William D. Schlaff; Michael P. Diamond; Christos Coutifaris; Sandra Ann Carson; Michael P. Steinkampf; Bruce R. Carr; Peter G. McGovern; Gabriella G. Gosman; John E. Nestler; Evan R. Myers; Richard S. Legro

CONTEXT Nonalcoholic fatty liver disease is common to insulin-resistant states such as polycystic ovary syndrome (PCOS). Metformin (MET) is often used to treat PCOS but information is limited as to its effects on liver function. OBJECTIVE We sought to determine the effects of MET on serum hepatic parameters in PCOS patients. DESIGN This was a secondary analysis of a randomized, doubled-blind trial from 2002-2004. SETTING This multi-center clinical trial was conducted in academic centers. PATIENTS Six hundred twenty-six infertile women with PCOS with serum liver function parameters less than twice the upper limit of normal were included. INTERVENTIONS Clomiphene citrate (n = 209), MET (n = 208), or combined (n = 209) were given for up to 6 months. MAIN OUTCOME MEASURE The percent change from baseline in renal and liver function between- and within-treatment arms was assessed. RESULTS Renal function improved in all treatment arms with significant decreases in serum blood urea nitrogen levels (range, -14.7 to -21.3%) as well as creatinine (-4.2 to -6.9%). There were similar decreases in liver transaminase levels in the clomiphene citrate and combined arms (-10% in bilirubin, -9 to -11% in transaminases) without significant changes in the MET arm. When categorizing baseline bilirubin, aspartate aminotransferase, and alanine aminotransferase into tertiles, there were significant within-treatment arm differences between the tertiles with the highest tertile having the largest decrease from baseline regardless of treatment arm. CONCLUSION Women with PCOS can safely use metformin and clomiphene even in the setting of mildly abnormal liver function parameters, and both result in improved renal function.

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Bruce R. Carr

University of Texas Southwestern Medical Center

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Richard S. Legro

Pennsylvania State University

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John E. Nestler

Virginia Commonwealth University

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