• Disease
  • Polycystic
  • Polycystic Ovary
  • Polycystic Ovary Syndrome
  • Stephen Franks

    Prominent publications by Stephen FRANKS

    KOL Index score: 16008

    BACKGROUND: Here we describe the consensus guideline methodology, summarise the evidence-based recommendations we provided to the World Health Organisation (WHO) for their consideration in the development of global guidance and present a narrative review on the management of anovulatory infertility in women with polycystic ovary syndrome (PCOS).

    OBJECTIVE AND RATIONALE: The aim of this paper was to present an evidence base for the management of anovulatory PCOS.


    Also Ranks for: Anovulatory Infertility |  pcos women |  ovulation induction |  polycystic ovary |  female fertilization
    KOL Index score: 15639

    CONTEXT: Obesity affects the majority of women with polycystic ovary syndrome (PCOS), but previous studies are inconsistent about the prevalence of obesity and the importance of weight gain in the development of the syndrome.

    OBJECTIVE: Our objective was to explore the association between weight, weight gain, hyperandrogenism, and PCOS from adolescence to late adulthood.

    DESIGN: The study includes a prospective Northern Finland Birth Cohort 1966 study including 5889 females born in 1966 ...

    Also Ranks for: Weight Gain |  pcos age |  ovary syndrome |  early adulthood |  body mass bmi
    KOL Index score: 15194

    BACKGROUND: Polycystic ovary syndrome (PCOS) is a common endocrine disorder affecting up to 10% of women of reproductive age. Women with anovulatory PCOS have hyperinsulinaemia, insulin resistance, and dyslipidaemia, and the syndrome is associated with greatly increased risks of non-insulin-dependent diabetes mellitus and cardiovascular disease and it often clusters in families. The VNTR (variable number of tandem repeats) locus upstream of the insulin gene (INS) regulates insulin ...

    Also Ranks for: Insulin Gene |  vntr pcos |  polycystic ovary syndrome |  linkage association |  tandem repeats
    KOL Index score: 14731

    STUDY QUESTION: Are self-reported menstrual disorders associated with hyperandrogenaemia and metabolic disturbances as early as in adolescence?

    SUMMARY ANSWER: Menstrual disorders at the age 16 are a good marker of hyperandrogenaemia, and an adverse lipid profile was associated with higher androgen levels.

    WHAT IS KNOWN AND WHAT THIS PAPER ADDS: Hyperandrogenism per se has been suggested to be a significant metabolic risk factor in women and a cause of physical and psychological ...

    Also Ranks for: Menstrual Disorders |  adolescent girls |  metabolic risk |  pcos women |  birth cohort
    KOL Index score: 14477

    OBJECTIVE: A previously published study has identified that anovulatory women with PCOS have an increased response of 17 alpha-hydroxyprogesterone (17OHP) and androstenedione to a GnRH analogue suggesting dysregulation of cytochrome P450c17 alpha. The object of this study was to compare the responses of the pituitary-ovarian axis to a single dose of a long-acting GnRH agonist (GnRHa) in both ovulatory and anovulatory women with PCOS with those in normal subjects.

    DESIGN: Comparative ...

    Also Ranks for: Anovulatory Women |  ovary syndrome |  single dose |  hyperandrogenism pcos |  steroid response
    KOL Index score: 14266

    OBJECTIVE: To assess the effect of moderate obesity on the outcome of induction of ovulation with low dose gonadotrophin in women with polycystic ovary syndrome (PCOS).

    DESIGN: Retrospective analysis of women with PCOS treated consecutively. An analysis of the impact of obesity on outcome of pregnancy using data from the North West Thames Regional (NWTR) obstetric database was included for comparison.

    SETTING: Induction of ovulation clinic at the Samaritan Hospital for Women (St. Mary's ...

    Also Ranks for: Women Pcos |  pregnancy outcome |  induction ovulation |  polycystic ovary |  low dose
    KOL Index score: 14091

    Background:Adiposity rebound (AR), the second BMI rise in childhood at around the age of 6 years, is associated with obesity and metabolic alteration in later life. Given that polycystic ovary syndrome (PCOS) has a strong metabolic component, early life growth patterns could reveal a risk of PCOS. Thus, we aimed to investigate the associations between age at AR and PCOS diagnosis and BMI later in life.Materials and methods:This study is part of a prospective, population-based ...

    Also Ranks for: Adiposity Rebound |  pcos diagnosis |  early age |  higher bmi |  46 years
    KOL Index score: 13987

    CONTEXT: Polycystic ovary syndrome (PCOS) is the most common cause of anovulation. A key feature of PCOS is arrest of follicles at the small- to medium-sized antral stage.

    OBJECTIVE AND DESIGN: To provide further insight into the mechanism of follicle arrest in PCOS, we profiled (i) gonadotropin receptors; (ii) characteristics of aberrant steroidogenesis; and (iii) expression of anti-Müllerian hormone (AMH) and its receptor in granulosa cells (GCs) from unstimulated, human small antral ...

    Also Ranks for: Gene Expression |  polycystic ovaries |  granulosa cells |  women pco |  antral follicles
    KOL Index score: 13959

    OBJECTIVE: We determined the relationship of short-term changes in circulating insulin concentrations, resulting from an oral glucose load, to those in both sex hormone binding globulin (SHBG) and insulin-like growth factor binding protein 1 (IGFBP-1) and assessed the effect of a short-term low calorie diet on the levels of SHBG and IGFBP-1 during an oral glucose tolerance test.

    DESIGN: A within-group comparison of biochemical indices during an oral glucose tolerance test before and ...

    Also Ranks for: Obese Women |  sex hormone |  binding protein |  growth factor |  shbg igfbp1
    KOL Index score: 13943

    OBJECTIVE: Obese women with polycystic ovary syndrome have a greater frequency of menstrual disturbance and of hirsutism than lean women with the syndrome. Initial studies have demonstrated a marked improvement in endocrine function following a short-term, very low calorie diet. The purpose of this study was to examine the effect of long-term calorie restriction on clinical as well as biochemical abnormalities in obese women with polycystic ovary syndrome.

    DESIGN: We performed a ...

    Also Ranks for: Obese Women |  polycystic ovary syndrome |  dietary treatment |  ovarian function |  menstrual disturbances
    KOL Index score: 13529

    OBJECTIVE: Women with a history of gestational diabetes mellitus (GDM) and women with polycystic ovary syndrome (PCOS) both demonstrate abnormalities in insulin action and secretion, and both are at increased risk of developing type 2 diabetes. To determine whether these similarities reflect a common pathophysiological basis, we examined the prevalence of ultrasound-based polycystic ovarian morphology in a large multiethnic group of women with a history of GDM and a group of women who ...

    Also Ranks for: Gestational Diabetes Women |  polycystic ovaries |  prevalence pco |  previous gdm |  south asian
    KOL Index score: 13428

    STUDY QUESTION: Can novel genetic candidates involved in follicle dormancy, activation and integrity be identified from transcriptomic profiles of isolated granulosa cells from human primordial and primary follicles?

    SUMMARY ANSWER: The granulosa cell compartment of the human primordial and primary follicle was extensively enriched in signal transducer and activator of transcription 3 (STAT3) and cAMP-response element binding protein (CREB) signalling, and several other putative ...

    Also Ranks for: Granulosa Cells |  primary follicles |  human primordial |  gene expression |  ovarian follicle


    Stephen FRANKS: Influence Statistics

    Sample of concepts for which Stephen FRANKS is among the top experts in the world.
    Concept World rank
    normal polycystic #1
    clomiphene responsiveness women #1
    pcos 31 #1
    pcos normal tissue #1
    proven fertility women #1
    evidence direct link #1
    ovulatory pco #1
    insulin preincubation #1
    tritiated dheas dhea #1
    clomiphene drug resistance #1
    ovpco #1
    abnormal pelvic venography #1
    shbg sumins #1
    menstrual cycle presence #1
    normal women differences #1
    gene cyp17 #1
    animal oocytes oogenesis #1
    pco normal subjects #1
    pcos diurnal variation #1
    groups 17ohp responses #1
    obesity androgen synthesis #1
    pcos survival cells #1
    glucose oligomenorrhoeic #1
    normal subjects menorrhagia #1
    9 growth hormone #1
    fact follicle growth #1
    hsafs 8 mm #1
    incubation prelabelled tissue #1
    difference prolactin levels #1
    igfbps steroidogenesis #1
    monofollicular ovulation #1
    notably increased progression #1
    263 consecutive cases #1
    ovaries uterine #1
    kisspeptin fshr #1
    bmp15 gdf9 bmp15 #1
    mfo lh pulses #1
    androstenedione concentrations bromocriptine #1
    controls pco #1
    pcos basal insulin #1
    anovulatory pcos #1
    5 glands #1
    insulin androgens #1
    primordial gcs #1
    single dose acute #1
    fog2 oocytes #1
    pcos 2 groups #1
    phospholipase activity endometrium #1
    pcos gcs #1
    pcos regression analysis #1

    Key People For Polycystic Ovary Syndrome

    Top KOLs in the world
    Richard S Legro
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    Ricardo Azziz
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    Andrea Elizabeth Dunaif
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    Robert John Norman
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    Stephen FRANKS
    polycystic ovary syndrome granulosa cells women pcos
    Evanthia Diamanti‐Kandarakis
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    Stephen FRANKS:Expert Impact

    Concepts for whichStephen FRANKShas direct influence:Polycystic ovary syndrome,  Polycystic ovaries,  Ovary syndrome,  Polycystic ovary,  Granulosa cells,  Women pcos,  Arachidonic acid,  Insulin resistance.

    Stephen FRANKS:KOL impact

    Concepts related to the work of other authors for whichfor which Stephen FRANKS has influence:Polycystic ovary syndrome,  Insulin resistance,  Women pcos,  Granulosa cells,  Ovulation induction,  Clomiphene citrate,  Vitro fertilization.



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    Institute of Reproductive and Developmental Biology, Imperial College London, London, UK | Institute of Reproductive and Developmental Biology, Imperial College London, Hammersmith Hospital, London W12 0NN, United Kingdom | Department of Metabolism,