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  1. Book ; Online ; E-Book: Fifty Years of Evolution in Biological Research

    Balthazart, Jacques

    Progress and Decline

    2023  

    Language English
    Size 1 online resource (178 pages)
    Edition 1st ed.
    Publisher John Wiley & Sons, Incorporated
    Publishing place Newark
    Document type Book ; Online ; E-Book
    Remark Zugriff für angemeldete ZB MED-Nutzerinnen und -Nutzer
    ISBN 1-394-23663-8 ; 1-394-23661-1 ; 9781786308788 ; 978-1-394-23663-3 ; 978-1-394-23661-9 ; 1786308789
    Database ZB MED Catalogue: Medicine, Health, Nutrition, Environment, Agriculture

    Full text online

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  2. Article ; Online: Steroid-dependent plasticity in the song control system: Perineuronal nets and HVC neurogenesis.

    Balthazart, Jacques

    Frontiers in neuroendocrinology

    2023  Volume 71, Page(s) 101097

    Abstract: The vocal control nucleus HVC in songbirds has emerged as a widespread model system to study adult brain plasticity in response to changes in the hormonal and social environment. I review here studies completed in my laboratory during the last decade ... ...

    Abstract The vocal control nucleus HVC in songbirds has emerged as a widespread model system to study adult brain plasticity in response to changes in the hormonal and social environment. I review here studies completed in my laboratory during the last decade that concern two aspects of this plasticity: changes in aggregations of extracellular matrix components surrounding the soma of inhibitory parvalbumin-positive neurons called perineuronal nets (PNN) and the production/incorporation of new neurons. Both features are modulated by the season, age, sex and endocrine status of the birds in correlation with changes in song structure and stability. Causal studies have also investigated the role of PNN and of new neurons in the control of song. Dissolving PNN with chondroitinase sulfate, a specific enzyme applied directly on HVC or depletion of new neurons by focalized X-ray irradiation both affected song structure but the amplitude of changes was limited and deserves further investigations.
    MeSH term(s) Animals ; Vocalization, Animal/physiology ; Songbirds/physiology ; Neurons ; Neuronal Plasticity/physiology ; Neurogenesis/physiology ; Extracellular Matrix
    Language English
    Publishing date 2023-08-21
    Publishing country United States
    Document type Journal Article ; Review ; Research Support, N.I.H., Extramural
    ZDB-ID 390985-2
    ISSN 1095-6808 ; 0532-7466 ; 0091-3022
    ISSN (online) 1095-6808
    ISSN 0532-7466 ; 0091-3022
    DOI 10.1016/j.yfrne.2023.101097
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.MO 443: Show issues

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  3. Book: The biology of homosexuality

    Balthazart, Jacques

    (Oxford series in behavioral neuroendocrinology)

    2012  

    Author's details Jacques Balthazart
    Series title Oxford series in behavioral neuroendocrinology
    Language English
    Size XII, 188 S. : Ill., graph. Darst., 25 cm
    Publisher Oxford Univ. Press
    Publishing place New York u.a.
    Publishing country United States
    Document type Book
    Note Includes bibliographical references and index
    HBZ-ID HT017069835
    ISBN 978-0-19-983882-0 ; 0-19-983882-8
    Database Catalogue ZB MED Medicine, Health

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    Shelf markLoan statusLocation
    2011 A 5437 order for loan Magazin

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  4. Article ; Online: A tribute to Gian Carlo Panzica (17 August 1949-21 July 2022).

    Balthazart, Jacques

    Frontiers in neuroendocrinology

    2022  Volume 67, Page(s) 101034

    Language English
    Publishing date 2022-09-02
    Publishing country United States
    Document type Editorial
    ZDB-ID 390985-2
    ISSN 1095-6808 ; 0532-7466 ; 0091-3022
    ISSN (online) 1095-6808
    ISSN 0532-7466 ; 0091-3022
    DOI 10.1016/j.yfrne.2022.101034
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  5. Article ; Online: In memoriam - Gian Carlo Panzica (17 August 1949-21 July 2022).

    Balthazart, Jacques

    Hormones and behavior

    2022  Volume 144, Page(s) 105247

    Language English
    Publishing date 2022-08-18
    Publishing country United States
    Document type Editorial
    ZDB-ID 214409-8
    ISSN 1095-6867 ; 0018-506X
    ISSN (online) 1095-6867
    ISSN 0018-506X
    DOI 10.1016/j.yhbeh.2022.105247
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    Zs.A 693: Show issues Location:
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  6. Article ; Online: Membrane-initiated actions of sex steroids and reproductive behavior: A historical account.

    Balthazart, Jacques

    Molecular and cellular endocrinology

    2021  Volume 538, Page(s) 111463

    Abstract: It was assumed for a long time that sex steroids are activating reproductive behaviors by the same mechanisms that produce their morphological and physiological effects in the periphery. However during the last few decades an increasing number of ... ...

    Abstract It was assumed for a long time that sex steroids are activating reproductive behaviors by the same mechanisms that produce their morphological and physiological effects in the periphery. However during the last few decades an increasing number of examples were identified where behavioral effects of steroids were just too fast to be mediated via changes in DNA transcription. This progressively forced behavioral neuroendocrinologists to recognize that part of the effects of steroids on behavior are mediated by membrane-initiated events. In this review we present a selection of these early data that changed the conceptual landscape and we provide a summary the different types of membrane-associated receptors (estrogens, androgens and progestagens receptors) that are playing the most important role in the control of reproductive behaviors. Then we finally describe in more detail three separate behavioral systems in which membrane-initiated events have clearly been established to contribute to behavior control.
    MeSH term(s) Animals ; Cell Membrane/metabolism ; Gonadal Steroid Hormones/metabolism ; Humans ; Receptors, Androgen/metabolism ; Receptors, Estrogen/metabolism ; Reproductive Behavior/physiology ; Sexual Behavior, Animal/physiology ; Steroids/metabolism ; Transcription, Genetic
    Chemical Substances Gonadal Steroid Hormones ; Receptors, Androgen ; Receptors, Estrogen ; Steroids
    Language English
    Publishing date 2021-09-25
    Publishing country Ireland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 187438-x
    ISSN 1872-8057 ; 0303-7207
    ISSN (online) 1872-8057
    ISSN 0303-7207
    DOI 10.1016/j.mce.2021.111463
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1127: Show issues Location:
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  7. Article ; Online: Sexual partner preference in animals and humans.

    Balthazart, Jacques

    Neuroscience and biobehavioral reviews

    2020  Volume 115, Page(s) 34–47

    Abstract: Sex differences in brain and behavior of animals including humans result from an interaction between biological and environmental influences. This is also true for the differences between men and women concerning sexual orientation. Sexual ... ...

    Abstract Sex differences in brain and behavior of animals including humans result from an interaction between biological and environmental influences. This is also true for the differences between men and women concerning sexual orientation. Sexual differentiation is mediated by three groups of biological mechanisms: early actions of sex steroids, more direct actions of sex-specific genes not mediated by gonadal sex steroids and epigenetic mechanisms. Differential interactions with parents and conspecifics have additionally long-term influences on behavior. This presentation reviews available evidence indicating that these different mechanisms play a significant role in the control of sexual partner preference in animals and humans, in other words the homosexual versus heterosexual orientation. Clinical and epidemiological studies of phenotypically selected populations indicate that early actions of hormones and genetic factors clearly contribute to the determination of sexual orientation. The maternal embryonic environment also modifies the incidence of male homosexuality via immunological mechanisms. The relative contribution of each of these mechanisms remains however to be determined.
    MeSH term(s) Animals ; Female ; Gonadal Steroid Hormones ; Homosexuality ; Humans ; Male ; Sex Characteristics ; Sexual Behavior ; Sexual Partners
    Chemical Substances Gonadal Steroid Hormones
    Language English
    Publishing date 2020-05-22
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Review
    ZDB-ID 282464-4
    ISSN 1873-7528 ; 0149-7634
    ISSN (online) 1873-7528
    ISSN 0149-7634
    DOI 10.1016/j.neubiorev.2020.03.024
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 1371: Show issues Location:
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  8. Article ; Online: How technical progress reshaped behavioral neuroendocrinology during the last 50 years… and some methodological remarks.

    Balthazart, Jacques

    Hormones and behavior

    2020  Volume 118, Page(s) 104682

    Abstract: The first issue of Hormones and Behavior was published 50 years ago in 1969, a time when most of the techniques we currently use in Behavioral Endocrinology were not available. Researchers have during the last 5 decades developed techniques that allow ... ...

    Abstract The first issue of Hormones and Behavior was published 50 years ago in 1969, a time when most of the techniques we currently use in Behavioral Endocrinology were not available. Researchers have during the last 5 decades developed techniques that allow measuring hormones in small volumes of biological samples, identify the sites where steroids act in the brain to activate sexual behavior, characterize and quantify gene expression correlated with behavior expression, modify this expression in a specific manner, and manipulate the activity of selected neuronal populations by chemogenetic and optogenetic techniques. This technical progress has considerably transformed the field and has been very beneficial for our understanding of the endocrine controls of behavior in general, but it did also come with some caveats. The facilitation of scientific investigations came with some relaxation of methodological exigency. Some critical controls are no longer performed on a regular basis and complex techniques supplied as ready to use kits are implemented without precise knowledge of their limitations. We present here a selective review of the most important of these new techniques, their potential problems and how they changed our view of the hormonal control of behavior. Fortunately, the scientific endeavor is a self-correcting process. The problems have been identified and corrections have been proposed. The next decades will obviously be filled with exciting discoveries in behavioral neuroendocrinology.
    MeSH term(s) Animals ; Behavior/physiology ; Behavior, Animal/physiology ; Gene Knockdown Techniques/history ; Gene Knockdown Techniques/methods ; Gene Knockdown Techniques/trends ; History, 20th Century ; History, 21st Century ; Humans ; In Situ Hybridization/history ; In Situ Hybridization/methods ; In Situ Hybridization/trends ; Inventions/history ; Inventions/trends ; Neuroendocrinology/history ; Neuroendocrinology/methods ; Neuroendocrinology/trends ; Optogenetics/history ; Optogenetics/methods ; Optogenetics/trends ; Radioimmunoassay/history ; Radioimmunoassay/methods ; Radioimmunoassay/trends ; Stereotaxic Techniques/history ; Stereotaxic Techniques/trends
    Language English
    Publishing date 2020-01-13
    Publishing country United States
    Document type Historical Article ; Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 214409-8
    ISSN 1095-6867 ; 0018-506X
    ISSN (online) 1095-6867
    ISSN 0018-506X
    DOI 10.1016/j.yhbeh.2020.104682
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Zs.A 693: Show issues Location:
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  9. Article ; Online: Contribution of birds to the study of sexual differentiation of brain and behavior.

    Cornil, Charlotte A / Balthazart, Jacques

    Hormones and behavior

    2023  Volume 155, Page(s) 105410

    Abstract: Behavioral neuroendocrinology has largely relied on mammalian models to understand the relationship between hormones and behavior, even if this discipline has historically used a larger diversity of species than other fields. Recent advances revealed the ...

    Abstract Behavioral neuroendocrinology has largely relied on mammalian models to understand the relationship between hormones and behavior, even if this discipline has historically used a larger diversity of species than other fields. Recent advances revealed the potential of avian models in elucidating the neuroendocrine bases of behavior. This paper provides a review focused mainly on the contributions of our laboratory to the study of sexual differentiation in Japanese quail and songbirds. Quail studies have firmly established the role of embryonic estrogens in the sexual differentiation of male copulatory behavior. While most sexually differentiated features identified in brain structure and physiology result from the different endocrine milieu of adults, a few characteristics are organized by embryonic estrogens. Among them, a sex difference was identified in the number and morphology of microglia which is not associated with sex differences in the concentration/expression of neuroinflammatory molecules. The behavioral role of microglia and neuroinflammatory processes requires further investigations. Sexual differentiation of singing in zebra finches is not mediated by the same endocrine mechanisms as male copulatory behavior and "direct" genetic effect, i.e., not mediated by gonadal steroids have been identified. Epigenetic contributions have also been considered. Finally sex differences in specific aspects of singing behavior have been identified in canaries after treatment of adults with exogenous testosterone suggesting that these aspects of song are differentiated during ontogeny. Integration of quail and songbirds as alternative models has thus expanded understanding of the interplay between hormones and behavior in the control of sexual differentiation.
    MeSH term(s) Animals ; Female ; Male ; Coturnix ; Sex Differentiation ; Quail ; Sexual Behavior, Animal/physiology ; Estrogens ; Gonadal Steroid Hormones ; Brain ; Testosterone ; Neurosecretory Systems ; Mammals
    Chemical Substances Estrogens ; Gonadal Steroid Hormones ; Testosterone (3XMK78S47O)
    Language English
    Publishing date 2023-08-09
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 214409-8
    ISSN 1095-6867 ; 0018-506X
    ISSN (online) 1095-6867
    ISSN 0018-506X
    DOI 10.1016/j.yhbeh.2023.105410
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: In memoriam - Mei-Fang Cheng (1938 to 2022).

    Ball, Gregory F / Balthazart, Jacques

    Hormones and behavior

    2022  Volume 146, Page(s) 105256

    Language English
    Publishing date 2022-09-11
    Publishing country United States
    Document type Editorial
    ZDB-ID 214409-8
    ISSN 1095-6867 ; 0018-506X
    ISSN (online) 1095-6867
    ISSN 0018-506X
    DOI 10.1016/j.yhbeh.2022.105256
    Database MEDical Literature Analysis and Retrieval System OnLINE

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