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  1. Book: Androgens in childhood

    Forest, Maguelone G.

    biologocial, physiological, clinical and therapeutic aspects ; 23 tables

    (Pediatric and adolescent endocrinology ; 19)

    1989  

    Author's details vol. ed. Maguelone G. Forest
    Series title Pediatric and adolescent endocrinology ; 19
    Collection
    Keywords Androgens ; Endocrine Diseases / in infancy & childhood ; Sex Differentiation Disorders ; Kind ; Androgene ; Störung
    Subject Perturbation ; Beeinträchtigung ; Störungen ; Männliche Sexualhormone ; Kindheit ; Kindesalter ; Kindschaft ; Kinder
    Language English
    Size VI, 281 S. : Ill., graph. Darst.
    Publisher Karger
    Publishing place Basel u.a.
    Publishing country Switzerland
    Document type Book
    HBZ-ID HT003465078
    ISBN 3-8055-4850-8 ; 978-3-8055-4850-2
    Database Catalogue ZB MED Medicine, Health

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  2. Book ; Conference proceedings: Endocrinologie sexuelle de la période périnatale

    Forest, Maguelone G.

    International Symposium on Sexual Endocrinology of the Perinatal Period, Lyon, France, May 30 - 31, 1974 = Sexual endocrinology of the perinatal period

    (Les colloques de l'Institut National de la Santé et de la Recherche Médicale ; 32)

    1974  

    Title variant Sexual endocrinology of the perinatal period
    Institution Institut National de la Santé et de la Recherche Médicale / Unité de Recherches Endocriniennes et Métaboliques chez l'Enfant
    Event/congress International Symposium on Sexual Endocrinology of the Perinatal Period (1974, Lyon)
    Author's details INSERM, Unité de Recherches Endocriniennes et Métaboliques chez l'Enfant.Publ. sous la responsabilité de Maguelone G. Forest
    Series title Les colloques de l'Institut National de la Santé et de la Recherche Médicale ; 32
    INSERM Colloque
    Collection INSERM Colloque
    Language French ; English
    Size 424 S. : Ill., graph. Darst.
    Publishing place Paris
    Publishing country France
    Document type Book ; Conference proceedings
    Note Beitr. teilw. engl., teilw. franz.
    HBZ-ID HT002430449
    Database Catalogue ZB MED Medicine, Health

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  3. Article: Recent advances in the diagnosis and management of congenital adrenal hyperplasia due to 21-hydroxylase deficiency.

    Forest, Maguelone G

    Human reproduction update

    2004  Volume 10, Issue 6, Page(s) 469–485

    Abstract: Congenital adrenal hyperplasias (CAH) are inherited defects of cortisol biosynthesis. More than 90% of CAH are caused by 21-hydroxylase deficiency (21-OHD), found in 1:10 000 to 1:15 000 live births. Females with 'classical' 21-OHD, being exposed to ... ...

    Abstract Congenital adrenal hyperplasias (CAH) are inherited defects of cortisol biosynthesis. More than 90% of CAH are caused by 21-hydroxylase deficiency (21-OHD), found in 1:10 000 to 1:15 000 live births. Females with 'classical' 21-OHD, being exposed to excess androgens prenatally, are born with virilized external genitalia. Potentially lethal adrenal insufficiency is characteristic of two-thirds to three-quarters of patients with the classical salt wasting (SW) form of 21-OHD. Non-SW 21-OHD may be diagnosed on genital ambiguity in affected females, and/or later on the occurrence of androgen excess in both sexes. Non-classical 21-OHD, detected in > or =1:100 of certain populations, may present as precocious pubarche in children or polycystic ovarian syndrome in young women. 21-OHD is caused by mutations in the CYP21 gene encoding the steroid 21-hydroxylase enzyme. More than 90% of these mutations result from intergenic recombination between CYP21 and the closely linked CYP21P pseudogene. The degree to which each mutation compromises enzymatic activity is strongly correlated with the clinical severity of the disorder. This close association between genotype and phenotype makes it possible to predict clinical outcome in affected subjects. The risk of SW and prenatal virilization can be estimated, and overtreatment can be avoided in mildly affected cases. Glucocorticoid and mineralocorticoid replacement therapies are the mainstays of treatment, but additional therapies are being developed. A first trimester prenatal diagnosis should be proposed in families in whom molecular studies have been performed previously. The state of heterozygotism can be predicted by hormonal testing and confirmed by molecular studies. Prenatal diagnosis by direct mutation detection in previously genotyped families permits prenatal treatment of affected females in order to avoid or minimize genital virilization. Neonatal screening by hormonal methods identifies affected children before SW crises develop, reducing mortality in this disorder.
    MeSH term(s) Adrenal Hyperplasia, Congenital/diagnosis ; Adrenal Hyperplasia, Congenital/epidemiology ; Adrenal Hyperplasia, Congenital/etiology ; Adrenal Hyperplasia, Congenital/therapy ; Body Height ; Dose-Response Relationship, Drug ; Female ; Fertility ; Genetic Counseling ; Glucocorticoids/therapeutic use ; Heterozygote ; Humans ; Incidence ; Infant, Newborn ; Mineralocorticoids/therapeutic use ; Mutation ; Neonatal Screening ; Obstetric Surgical Procedures/methods ; Pregnancy ; Prenatal Diagnosis/methods ; Steroid 21-Hydroxylase/genetics ; Treatment Outcome
    Chemical Substances Glucocorticoids ; Mineralocorticoids ; Steroid 21-Hydroxylase (EC 1.14.14.16)
    Language English
    Publishing date 2004-11
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1286738-x
    ISSN 1460-2369 ; 1355-4786
    ISSN (online) 1460-2369
    ISSN 1355-4786
    DOI 10.1093/humupd/dmh047
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: A case of 3beta-hydroxysteroid dehydrogenase type II (HSD3B2) deficiency picked up by neonatal screening for 21-hydroxylase deficiency: difficulties and delay in etiologic diagnosis.

    Nordenström, Anna / Forest, Maguelone G / Wedell, Anna

    Hormone research

    2007  Volume 68, Issue 4, Page(s) 204–208

    Abstract: Background: 3beta-Hydroxysteroid dehydrogenase type II deficiency, a rare form of congenital adrenal hyperplasia, is characterized by varying degrees of salt loss and incomplete masculinization in males and mild virilization or normal external genitalia ...

    Abstract Background: 3beta-Hydroxysteroid dehydrogenase type II deficiency, a rare form of congenital adrenal hyperplasia, is characterized by varying degrees of salt loss and incomplete masculinization in males and mild virilization or normal external genitalia in females. The clinical signs may be difficult to recognize, increasing the risk of a neonatal adrenal crisis. In addition, elevated 17alpha-hydroxyprogesterone and androstenedione levels due to peripheral HSD3B1 activity may lead to a delay of the correct diagnosis and even to misdiagnosis as CYP21 deficiency.
    Method: We report a patient who was detected on neonatal screening for 21-hydroxylase deficiency, in part because of cross-reactivity in the commonly used assay.
    Results: The diagnostic difficulties in this case were overcome by the use of more specific antibodies.
    Conclusion: This case emphasizes the importance of confirming the etiological diagnosis with molecular genetic analyses.
    MeSH term(s) 3-Hydroxysteroid Dehydrogenases/genetics ; Adrenal Hyperplasia, Congenital/diagnosis ; Adrenal Hyperplasia, Congenital/etiology ; Adrenal Hyperplasia, Congenital/genetics ; Diagnosis, Differential ; Female ; Humans ; Infant, Newborn ; Neonatal Screening
    Chemical Substances 3-Hydroxysteroid Dehydrogenases (EC 1.1.-)
    Language English
    Publishing date 2007
    Publishing country Switzerland
    Document type Case Reports ; Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 124442-5
    ISSN 1423-0046 ; 0301-0163
    ISSN (online) 1423-0046
    ISSN 0301-0163
    DOI 10.1159/000102593
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Book: Androgens in childhood

    Forest, Maguelone G

    biological, physiological, clinical, and therapeutic aspects

    (Pediatric and adolescent endocrinology ; vol. 19)

    1989  

    Author's details volume editor, Maguelone G. Forest
    Series title Pediatric and adolescent endocrinology ; vol. 19
    MeSH term(s) Child ; Infant ; Androgens ; Disorders of Sex Development ; Endocrine System Diseases
    Language English
    Size vi, 281 p. :, ill.
    Publisher Karger
    Publishing place Basel ; New York
    Document type Book
    Note Includes index.
    ISBN 9783805548502 ; 3805548508
    Database Catalogue of the US National Library of Medicine (NLM)

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  6. Article: A Case of 3β-Hydroxysteroid Dehydrogenase Type II (HSD3B2) Deficiency Picked up by Neonatal Screening for 21-Hydroxylase Deficiency: Difficulties and Delay in Etiologic Diagnosis

    Nordenström, Anna / Forest, Maguelone G. / Wedell, Anna

    Hormone Research in Paediatrics

    2007  Volume 68, Issue 4, Page(s) 204–208

    Abstract: Background: 3β-Hydroxysteroid dehydrogenase type II deficiency, a rare form of congenital adrenal hyperplasia, is characterized by varying degrees of salt loss and incomplete masculinization in males and mild virilization or normal external genitalia in ... ...

    Institution Department of Pediatrics and PKU Laboratory, and Department of Molecular Medicine and Surgery, Karolinska University Hospital Huddinge and Solna, Karolinska Institutet, Stockholm, Sweden Department of Pediatric Endocrinology, Hôpital Debrousse, Lyon, France
    Abstract Background: 3β-Hydroxysteroid dehydrogenase type II deficiency, a rare form of congenital adrenal hyperplasia, is characterized by varying degrees of salt loss and incomplete masculinization in males and mild virilization or normal external genitalia in females. The clinical signs may be difficult to recognize, increasing the risk of a neonatal adrenal crisis. In addition, elevated 17α-hydroxyprogesterone and androstenedione levels due to peripheral HSD3B1 activity may lead to a delay of the correct diagnosis and even to misdiagnosis as CYP21 deficiency. Method: We report a patient who was detected on neonatal screening for 21-hydroxylase deficiency, in part because of cross-reactivity in the commonly used assay. Results: The diagnostic difficulties in this case were overcome by the use of more specific antibodies. Conclusion: This case emphasizes the importance of confirming the etiological diagnosis with molecular genetic analyses.
    Keywords 3β-Hydroxysteroid dehydrogenase type II ; <italic>HSD3B2</italic> gene ; Neonatal screening, congenital adrenal hyperplasia ; Assay cross-reactivity
    Language English
    Publishing date 2007-05-10
    Publisher S. Karger AG
    Publishing place Basel, Switzerland
    Document type Article
    Note Novel Insights from Clinical Practice
    ZDB-ID 2537278-6
    ISSN 1663-2826 ; 1663-2818
    ISSN (online) 1663-2826
    ISSN 1663-2818
    DOI 10.1159/000102593
    Database Karger publisher's database

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  7. Article: Follicular cells acquire sertoli cell characteristics after oocyte loss.

    Guigon, Céline J / Coudouel, Noëlline / Mazaud-Guittot, Séverine / Forest, Maguelone G / Magre, Solange

    Endocrinology

    2005  Volume 146, Issue 7, Page(s) 2992–3004

    Abstract: Although it has been suggested that in mammals the loss of female germ cells may induce the masculinization of the ovarian compartment, there has been as yet no conclusive demonstration. To directly address that question, the present study has been ... ...

    Abstract Although it has been suggested that in mammals the loss of female germ cells may induce the masculinization of the ovarian compartment, there has been as yet no conclusive demonstration. To directly address that question, the present study has been designed to determine the fate of follicular cells after oocyte loss. Using gamma-irradiation to selectively deplete oocytes in nongrowing follicles in female rats, we show that follicular cells in oocyte-depleted follicles survive, proliferate, and subsequently acquire morphological characteristics of Sertoli cells: elongated cytoplasm, basal location of the nucleus, and specific Sertoli cell junctions, the ectoplasmic specializations. These Sertoli-like cells express, however, the female-specific marker FOXL2 (Forkhead L2) but not the male sex-specific marker SOX-9 (Sry-type high-mobility-group box transcription factor-9) underlying the maintenance of molecular characteristics of granulosa cells. Before transdifferentiating into Sertoli-like cells, follicular cells of oocyte-depleted follicles initiate the expression of anti-Mullerian hormone and inhibin alpha-subunit that are typically synthesized by granulosa cells from the onset of follicular growth. Experimental modifications of the endocrine balance of the irradiated females show that there is a close relationship between plasma FSH levels and the occurrence of Sertoli-like cells. In addition to providing experimental evidence for the crucial role of the oocyte in granulosa cell phenotype maintenance, these results emphasize that the transdifferentiation of granulosa cells into Sertoli cells occurs in a multistep fashion, requiring the maturation of granulosa cells and depending on the endocrine milieu.
    MeSH term(s) Animals ; Anti-Mullerian Hormone ; Biomarkers/metabolism ; Cell Differentiation/physiology ; Cell Survival/physiology ; DNA-Binding Proteins/metabolism ; Female ; Follicle Stimulating Hormone/blood ; Gamma Rays ; Glycoproteins/metabolism ; Granulosa Cells/physiology ; Inhibins/metabolism ; Male ; Oocytes/cytology ; Oocytes/radiation effects ; Ovarian Follicle/cytology ; Ovarian Follicle/metabolism ; Ovarian Follicle/physiology ; Phenotype ; Rats ; Sertoli Cells/cytology ; Sertoli Cells/physiology ; Testicular Hormones/metabolism ; Transcription Factors/metabolism
    Chemical Substances Biomarkers ; DNA-Binding Proteins ; Glycoproteins ; Testicular Hormones ; Transcription Factors ; inhibin-alpha subunit ; Inhibins (57285-09-3) ; Anti-Mullerian Hormone (80497-65-0) ; Follicle Stimulating Hormone (9002-68-0)
    Language English
    Publishing date 2005-07
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 427856-2
    ISSN 1945-7170 ; 0013-7227
    ISSN (online) 1945-7170
    ISSN 0013-7227
    DOI 10.1210/en.2005-0045
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Diethylstilbestrol inhibits the expression of the steroidogenic acute regulatory protein in mouse fetal testis.

    Guyot, Romain / Odet, Fanny / Leduque, Patrick / Forest, Maguelone G / Le Magueresse-Battistoni, Brigitte

    Molecular and cellular endocrinology

    2004  Volume 220, Issue 1-2, Page(s) 67–75

    Abstract: This study investigated the early deleterious effects of an in-utero exposure to diethylstilbestrol (DES) on mouse testicular development. To that purpose, pregnant mice were injected daily with up to 100 microg/kg DES from 10.5 to 17.5 days postcoitum ( ... ...

    Abstract This study investigated the early deleterious effects of an in-utero exposure to diethylstilbestrol (DES) on mouse testicular development. To that purpose, pregnant mice were injected daily with up to 100 microg/kg DES from 10.5 to 17.5 days postcoitum (dpc). At 18.5 dpc, testes were removed from fetuses for RNA (RT-PCR) and protein (Western blot, immunohistochemistry) analysis. Twenty-two genes were selected among which transcription factors, markers of differentiation of the different testicular cell lineages, steroidogenic enzymes and hormone receptors. The Steroidogenic Acute Regulatory (StAR) protein produced by the fetal Leydig cells was dramatically reduced in the DES-exposed testes. The P450c17 was the other gene modified following DES exposure. The alteration of these two genes is consistent with the decrease observed in the intratesticular testosterone levels, in the DES-exposed testes. Collectively, we demonstrated that DES did not alter testicular cell lineage specification but that it strongly inhibited the major function of the fetal Leydig cells.
    MeSH term(s) 3-Hydroxysteroid Dehydrogenases/metabolism ; Animals ; Blotting, Western ; DNA-Binding Proteins/metabolism ; Diethylstilbestrol/pharmacology ; Female ; Fetus/drug effects ; Fetus/metabolism ; Gene Expression Regulation/drug effects ; Homeodomain Proteins ; Immunohistochemistry ; Male ; Mice ; Phosphoproteins/genetics ; Phosphoproteins/metabolism ; Pregnancy ; RNA, Messenger/genetics ; RNA, Messenger/metabolism ; Receptors, Cytoplasmic and Nuclear ; Steroidogenic Factor 1 ; Testis/anatomy & histology ; Testis/drug effects ; Testis/metabolism ; Testosterone/metabolism ; Transcription Factors/metabolism
    Chemical Substances DNA-Binding Proteins ; Homeodomain Proteins ; Phosphoproteins ; RNA, Messenger ; Receptors, Cytoplasmic and Nuclear ; Steroidogenic Factor 1 ; Transcription Factors ; steroidogenic acute regulatory protein ; Testosterone (3XMK78S47O) ; Diethylstilbestrol (731DCA35BT) ; 3-Hydroxysteroid Dehydrogenases (EC 1.1.-)
    Language English
    Publishing date 2004-05-31
    Publishing country Ireland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 187438-x
    ISSN 1872-8057 ; 0303-7207
    ISSN (online) 1872-8057
    ISSN 0303-7207
    DOI 10.1016/j.mce.2004.03.008
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Unaltered development of the initial follicular waves and normal pubertal onset in female rats after neonatal deletion of the follicular reserve.

    Guigon, Céline J / Mazaud, Séverine / Forest, Maguelone G / Brailly-Tabard, Sylvie / Coudouel, Noëlline / Magre, Solange

    Endocrinology

    2003  Volume 144, Issue 8, Page(s) 3651–3662

    Abstract: In rats, the pool of primordial follicles is established within the first 3 d postnatally (dpn). Immediately after their differentiation, a subset of follicles begins to grow and constitutes the initial follicular waves. In this study we investigated the ...

    Abstract In rats, the pool of primordial follicles is established within the first 3 d postnatally (dpn). Immediately after their differentiation, a subset of follicles begins to grow and constitutes the initial follicular waves. In this study we investigated the development of these early growing follicles after deletion of the primordial follicle pool induced by 1.5 Gy gamma-irradiation at 5 dpn. Within only 24 h, i.e. at 6 dpn, 99% of the primordial follicles disappeared, whereas most of the growing follicles remained unaffected. The study of these surviving follicles throughout the immature period has shown that their subsequent growth proceeded normally, as assessed by proliferating cell nuclear antigen immunostaining and follicular counts. No modification in the process of follicular atresia, studied by terminal deoxynucleotidyltransferase-mediated deoxy-UTP-fluorescein nick end labeling and Southern blot of DNA fragmentation analysis, was observed. Complementary analysis, by either in situ hybridization for inhibin subunits, P450 aromatase, and LH receptor mRNAs or plasma dosages of 17beta-estradiol and inhibin B, further showed that follicular maturation was unaltered. In line with these observations, pubertal onset was normal, regarding both age and ovulation rate. Nevertheless, as a consequence of the nonrenewal of the growing pool, the follicular complement was practically exhausted at puberty, and 90% of the females evidenced sterility by 4 months. Altogether, our results demonstrate that the deletion of the primordial follicle pool has induced no modification in the growth pattern of the early growing follicles that develop as their counterparts in control ovaries. Within the immature period, the initial follicular waves ensure the ovarian functionality and thus play a key role in the initiation of reproductive life.
    MeSH term(s) Animals ; Animals, Newborn ; Aromatase/genetics ; Blotting, Southern ; Cell Count ; DNA Fragmentation ; Estradiol/blood ; Female ; Follicular Atresia ; Gamma Rays ; In Situ Hybridization ; In Situ Nick-End Labeling ; Infertility, Female/etiology ; Inhibins/blood ; Inhibins/genetics ; Oocytes ; Ovarian Follicle/chemistry ; Ovarian Follicle/growth & development ; Ovarian Follicle/radiation effects ; Proliferating Cell Nuclear Antigen/analysis ; RNA, Messenger/analysis ; Rats ; Rats, Sprague-Dawley ; Receptors, LH/genetics ; Sexual Maturation
    Chemical Substances Proliferating Cell Nuclear Antigen ; RNA, Messenger ; Receptors, LH ; inhibin B ; Estradiol (4TI98Z838E) ; Inhibins (57285-09-3) ; Aromatase (EC 1.14.14.1)
    Language English
    Publishing date 2003-08
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 427856-2
    ISSN 1945-7170 ; 0013-7227
    ISSN (online) 1945-7170
    ISSN 0013-7227
    DOI 10.1210/en.2003-0072
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Role of Androgens in Fetal and Pubertal Development

    Forest, Maguelone G.

    Hormone Research - From Developmental Endocrinology to Clinical Research

    1983  Volume 18, Issue 1-3, Page(s) 69–83

    Abstract: ... on specific organs during a critical phase of morphogenesis (e.g. sexual differentiation of external genitalia), or ...

    Abstract During fetal development, androgens exert long-term effects which are either organizational on specific organs during a critical phase of morphogenesis (e.g. sexual differentiation of external genitalia), or programming neural functions or enzyme activities expressed later in life. At all stages of development, which extends from fetal and neonatal stages to pubertal accomplishment, androgens also have activational effects that are immediate, multiple, reversible and dose dependent. Both types of actions are intricate during human development. This review will focus (1) on the intricate morphological and activational roles of androgens on sexual differentiation and pubertal development of the genital tract, external genitalia and mammary glands, and (2) on the organizational effects of androgens on four central nervous system functions: pituitary regulation of liver metabolism, gonadotropin secretions, sex dimorphic behavioral patterns, and ‘sexualization of the brain’. If the molecular basis of the immediate androgenic action is known, depending of androgen receptor’s availability and affinity, little is known of the way androgens exert their influence on either so various morphological processes or neuroendocrine imprinting.
    Keywords Androgen ; Sex differentiation ; Fetal life ; Puberty ; Liver metabolism ; Gonadotropin secretions ; Behavioral patterns ; Central nervous system
    Language English
    Publisher S. Karger AG
    Publishing place Basel
    Publishing country Switzerland
    Document type Article ; Online
    ZDB-ID 124442-5
    ISSN 1423-0046 ; 0301-0163 ; 0301-0163
    ISSN (online) 1423-0046
    ISSN 0301-0163
    DOI 10.1159/000179780
    Database Karger publisher's database

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