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  1. Article: Ontogeny of ependymoglial cells lining the third ventricle in mice.

    Lopez-Rodriguez, David / Rohrbach, Antoine / Lanzillo, Marc / Gervais, Manon / Croizier, Sophie / Langlet, Fanny

    Frontiers in endocrinology

    2023  Volume 13, Page(s) 1073759

    Abstract: Introduction: During hypothalamic development, the germinative neuroepithelium gives birth to diverse neural cells that regulate numerous physiological functions in adulthood.: Methods: Here, we studied the ontogeny of ependymal cells in the mouse ... ...

    Abstract Introduction: During hypothalamic development, the germinative neuroepithelium gives birth to diverse neural cells that regulate numerous physiological functions in adulthood.
    Methods: Here, we studied the ontogeny of ependymal cells in the mouse mediobasal hypothalamus using the BrdU approach and publicly available single-cell RNAseq datasets.
    Results: We observed that while typical ependymal cells are mainly produced at E13, tanycyte birth depends on time and subtypes and lasts up to P8. Typical ependymocytes and β tanycytes are the first to arise at the top and bottom of the dorsoventral axis around E13, whereas α tanycytes emerge later in development, generating an outside-in dorsoventral gradient along the third ventricle. Additionally, α tanycyte generation displayed a rostral-to-caudal pattern. Finally, tanycytes mature progressively until they reach transcriptional maturity between P4 and P14.
    Discussion: Altogether, this data shows that ependyma generation differs in time and distribution, highlighting the heterogeneity of the third ventricle.
    MeSH term(s) Mice ; Animals ; Ependymoglial Cells ; Third Ventricle ; Neuroglia ; Neurons ; Neurogenesis
    Language English
    Publishing date 2023-01-05
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2592084-4
    ISSN 1664-2392
    ISSN 1664-2392
    DOI 10.3389/fendo.2022.1073759
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Endocrine-disrupting chemicals and their effects on puberty.

    Lopez-Rodriguez, David / Franssen, Delphine / Heger, Sabine / Parent, Anne-Simone

    Best practice & research. Clinical endocrinology & metabolism

    2021  Volume 35, Issue 5, Page(s) 101579

    Abstract: Sexual maturation in humans is characterized by a unique individual variability. Pubertal onset is a highly heritable polygenic trait but it is also affected by environmental factors such as obesity or endocrine disrupting chemicals. The last 30 years ... ...

    Abstract Sexual maturation in humans is characterized by a unique individual variability. Pubertal onset is a highly heritable polygenic trait but it is also affected by environmental factors such as obesity or endocrine disrupting chemicals. The last 30 years have been marked by a constant secular trend toward earlier age at onset of puberty in girls and boys around the world. More recent data, although more disputed, suggest an increased incidence in idiopathic central precocious puberty. Such trends point to a role for environmental factors in pubertal changes. Animal data suggest that the GnRH-neuronal network is highly sensitive to endocrine disruption during development. This review focuses on the most recent data regarding secular trend in pubertal timing as well as potential new epigenetic mechanisms explaining the developmental and transgenerational effects of endocrine disrupting chemicals on pubertal timing.
    MeSH term(s) Animals ; Endocrine Disruptors/toxicity ; Female ; Humans ; Male ; Obesity/chemically induced ; Obesity/epidemiology ; Obesity/genetics ; Puberty ; Puberty, Precocious/chemically induced ; Puberty, Precocious/epidemiology ; Puberty, Precocious/genetics ; Sexual Maturation
    Chemical Substances Endocrine Disruptors
    Language English
    Publishing date 2021-09-17
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2052339-7
    ISSN 1878-1594 ; 1532-1908 ; 1521-690X
    ISSN (online) 1878-1594 ; 1532-1908
    ISSN 1521-690X
    DOI 10.1016/j.beem.2021.101579
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Endocrine disrupters and possible contribution to pubertal changes.

    Fudvoye, Julie / Lopez-Rodriguez, David / Franssen, Delphine / Parent, Anne-Simone

    Best practice & research. Clinical endocrinology & metabolism

    2019  Volume 33, Issue 3, Page(s) 101300

    Abstract: The onset of puberty strongly depends on organizational processes taking place during the fetal and early postnatal life. Therefore, exposure to environmental pollutants such as Endocrine disrupting chemicals (EDCs) during critical periods of development ...

    Abstract The onset of puberty strongly depends on organizational processes taking place during the fetal and early postnatal life. Therefore, exposure to environmental pollutants such as Endocrine disrupting chemicals (EDCs) during critical periods of development can result in delayed/advanced puberty and long-term reproductive consequences. Human evidence of altered pubertal timing after exposure to endocrine disrupting chemicals is equivocal. However, the age distribution of pubertal signs points to a skewed distribution towards earliness for initial pubertal stages and towards lateness for final pubertal stages. Such distortion of distribution is a recent phenomenon and suggests environmental influences including the possible role of nutrition, stress and endocrine disruptors. Rodent and ovine studies indicate a role of fetal and neonatal exposure to EDCs, along the concept of early origin of health and disease. Such effects involve neuroendocrine mechanisms at the level of the hypothalamus where homeostasis of reproduction is programmed and regulated but also peripheral effects at the level of the gonads or the mammary gland.
    MeSH term(s) Animals ; Endocrine Disruptors/adverse effects ; Environmental Pollutants/adverse effects ; Female ; Homeostasis/drug effects ; Humans ; Hypothalamus/drug effects ; Male ; Puberty/drug effects ; Puberty, Precocious/epidemiology
    Chemical Substances Endocrine Disruptors ; Environmental Pollutants
    Language English
    Publishing date 2019-07-27
    Publishing country Netherlands
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2052339-7
    ISSN 1878-1594 ; 1532-1908 ; 1521-690X
    ISSN (online) 1878-1594 ; 1532-1908
    ISSN 1521-690X
    DOI 10.1016/j.beem.2019.101300
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Book ; Online: Under the radar

    Almunia, Miguel / Lopez-Rodriguez, David

    the effects of monitoring firms on tax compliance

    (CAGE online working paper series ; 245)

    2015  

    Author's details Miguel Almunia and David Lopez-Rodriguez
    Series title CAGE online working paper series ; 245
    Language English
    Size Online-Ressource (50, XIX S.), graph. Darst.
    Publisher CAGE
    Publishing place Coventry
    Document type Book ; Online
    Database ECONomics Information System

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  5. Book ; Online: Under the radar

    Almunia, Miguel / Lopez-Rodriguez, David

    the effects of monitoring firms on tax compliance

    (Warwick economics research paper series ; 1070)

    2015  

    Author's details Miguel Almunia & David Lopez-Rodriguez
    Series title Warwick economics research paper series ; 1070
    Language English
    Size Online-Ressource (50, XIX S.), graph. Darst.
    Publisher Univ. of Warwick, Dep. of Economics
    Publishing place Coventry
    Document type Book ; Online
    Database ECONomics Information System

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  6. Article ; Online: Cellular and molecular features of EDC exposure: consequences for the GnRH network.

    Lopez-Rodriguez, David / Franssen, Delphine / Bakker, Julie / Lomniczi, Alejandro / Parent, Anne-Simone

    Nature reviews. Endocrinology

    2020  Volume 17, Issue 2, Page(s) 83–96

    Abstract: The onset of puberty and the female ovulatory cycle are important developmental milestones of the reproductive system. These processes are controlled by a tightly organized network of neurotransmitters and neuropeptides, as well as genetic, epigenetic ... ...

    Abstract The onset of puberty and the female ovulatory cycle are important developmental milestones of the reproductive system. These processes are controlled by a tightly organized network of neurotransmitters and neuropeptides, as well as genetic, epigenetic and hormonal factors, which ultimately drive the pulsatile secretion of gonadotropin-releasing hormone. They also strongly depend on organizational processes that take place during fetal and early postnatal life. Therefore, exposure to environmental pollutants such as endocrine-disrupting chemicals (EDCs) during critical periods of development can result in altered brain development, delayed or advanced puberty and long-term reproductive consequences, such as impaired fertility. The gonads and peripheral organs are targets of EDCs, and research from the past few years suggests that the organization of the neuroendocrine control of reproduction is also sensitive to environmental cues and disruption. Among other mechanisms, EDCs interfere with the action of steroidal and non-steroidal receptors, and alter enzymatic, metabolic and epigenetic pathways during development. In this Review, we discuss the cellular and molecular consequences of perinatal exposure (mostly in rodents) to representative EDCs with a focus on the neuroendocrine control of reproduction, pubertal timing and the female ovulatory cycle.
    MeSH term(s) Animals ; Cell Movement ; DNA Methylation/drug effects ; Endocrine Disruptors/pharmacology ; Environmental Exposure ; Epigenesis, Genetic/drug effects ; Estradiol/metabolism ; Feedback, Physiological/drug effects ; Female ; GABA Agents/metabolism ; Germ Cells/metabolism ; Glutamic Acid/metabolism ; Gonadotropin-Releasing Hormone/drug effects ; Gonadotropin-Releasing Hormone/metabolism ; Histone Code/drug effects ; Humans ; Hypothalamus/cytology ; Hypothalamus/drug effects ; Hypothalamus/growth & development ; Hypothalamus/metabolism ; Kisspeptins/metabolism ; Male ; Neurons/drug effects ; Neurons/metabolism ; Ovulation/drug effects ; Ovulation/metabolism ; Pregnancy ; Prenatal Exposure Delayed Effects
    Chemical Substances Endocrine Disruptors ; GABA Agents ; Kisspeptins ; Gonadotropin-Releasing Hormone (33515-09-2) ; Glutamic Acid (3KX376GY7L) ; Estradiol (4TI98Z838E)
    Language English
    Publishing date 2020-12-07
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2489381-X
    ISSN 1759-5037 ; 1759-5029
    ISSN (online) 1759-5037
    ISSN 1759-5029
    DOI 10.1038/s41574-020-00436-3
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article: Perinatal exposure to the fungicide ketoconazole alters hypothalamic control of puberty in female rats.

    Franssen, Delphine / Johansson, Hanna K L / Lopez-Rodriguez, David / Lavergne, Arnaud / Terwagne, Quentin / Boberg, Julie / Christiansen, Sofie / Svingen, Terje / Parent, Anne-Simone

    Frontiers in endocrinology

    2023  Volume 14, Page(s) 1140886

    Abstract: Introduction: Estrogenic endocrine disrupting chemicals (EDCs) such as diethylstilbestrol (DES) are known to alter the timing of puberty onset and reproductive function in females. Accumulating evidence suggests that steroid synthesis inhibitors such as ...

    Abstract Introduction: Estrogenic endocrine disrupting chemicals (EDCs) such as diethylstilbestrol (DES) are known to alter the timing of puberty onset and reproductive function in females. Accumulating evidence suggests that steroid synthesis inhibitors such as ketoconazole (KTZ) or phthalates may also affect female reproductive health, however their mode of action is poorly understood. Because hypothalamic activity is very sensitive to sex steroids, we aimed at determining whether and how EDCs with different mode of action can alter the hypothalamic transcriptome and GnRH release in female rats.
    Design: Female rats were exposed to KTZ or DES during perinatal (DES 3-6-12μg/kg.d; KTZ 3-6-12mg/kg.d), pubertal or adult periods (DES 3-12-48μg/kg.d; KTZ 3-12-48mg/kg.d).
    Results: Ex vivo study of GnRH pulsatility revealed that perinatal exposure to the highest doses of KTZ and DES delayed maturation of GnRH secretion before puberty, whereas pubertal or adult exposure had no effect on GnRH pulsatility. Hypothalamic transcriptome, studied by RNAsequencing in the preoptic area and in the mediobasal hypothalamus, was found to be very sensitive to perinatal exposure to all doses of KTZ before puberty with effects persisting until adulthood. Bioinformatic analysis with Ingenuity Pathway Analysis predicted "Creb signaling in Neurons" and "IGF-1 signaling" among the most downregulated pathways by all doses of KTZ and DES before puberty, and "PPARg" as a common upstream regulator driving gene expression changes. Deeper screening ofRNAseq datasets indicated that a high number of genes regulating the activity of the extrinsic GnRH pulse generator were consistently affected by all the doses of DES and KTZ before puberty. Several, including MKRN3, DNMT3 or Cbx7, showed similar alterations in expression at adulthood.
    Conclusion: nRH secretion and the hypothalamic transcriptome are highly sensitive to perinatal exposure to both DES and KTZ. The identified pathways should be exploredfurther to identify biomarkers for future testing strategies for EDC identification and when enhancing the current standard information requirements in regulation.
    MeSH term(s) Pregnancy ; Rats ; Animals ; Female ; Fungicides, Industrial/metabolism ; Fungicides, Industrial/pharmacology ; Ketoconazole/pharmacology ; Sexual Maturation/physiology ; Hypothalamus/metabolism ; Gonadotropin-Releasing Hormone/metabolism
    Chemical Substances Fungicides, Industrial ; Ketoconazole (R9400W927I) ; Gonadotropin-Releasing Hormone (33515-09-2)
    Language English
    Publishing date 2023-04-03
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2592084-4
    ISSN 1664-2392
    ISSN 1664-2392
    DOI 10.3389/fendo.2023.1140886
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Book: Indefenso ciudadano español

    López Rodríguez, David

    2014  

    Author's details David López Rodríguez
    Language Spanish
    Size 205 p, ill, 21 cm
    Publisher Luhu Alcoi
    Publishing place Alicante
    Document type Book
    ISBN 9788494297052 ; 8494297058
    Database Former special subject collection: coastal and deep sea fishing

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  9. Book ; Online: Heterogeneous responses to effective tax enforcement

    Almunia, Miguel / López-Rodríguez, David

    evidence from Spanish firms

    (Documentos de trabajo / Banco de España, Eurosistema ; no. 1419)

    2014  

    Author's details Miguel Almunia, David López-Rodríguez
    Series title Documentos de trabajo / Banco de España, Eurosistema ; no. 1419
    Language English
    Size 1 Online-Ressource (circa 61 Seiten), Illustrationen
    Publisher Banco de España
    Publishing place Madrid
    Document type Book ; Online
    Note Zusammenfassung in spanischer Sprache
    Database ECONomics Information System

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  10. Article ; Online: A Putative Adverse Outcome Pathway Network for Disrupted Female Pubertal Onset to Improve Testing and Regulation of Endocrine Disrupting Chemicals.

    Franssen, Delphine / Svingen, Terje / Lopez Rodriguez, David / Van Duursen, Majorie / Boberg, Julie / Parent, Anne-Simone

    Neuroendocrinology

    2021  Volume 112, Issue 2, Page(s) 101–114

    Abstract: The average age for pubertal onset in girls has declined over recent decades. Epidemiological studies in humans and experimental studies in animals suggest a causal role for endocrine disrupting chemicals (EDCs) that are present in our environment. Of ... ...

    Abstract The average age for pubertal onset in girls has declined over recent decades. Epidemiological studies in humans and experimental studies in animals suggest a causal role for endocrine disrupting chemicals (EDCs) that are present in our environment. Of concern, current testing and screening regimens are inadequate in identifying EDCs that may affect pubertal maturation, not least because they do not consider early-life exposure. Also, the causal relationship between EDC exposure and pubertal timing is still a matter of debate. To address this issue, we have used current knowledge to elaborate a network of putative adverse outcome pathways (pAOPs) to identify how chemicals can affect pubertal onset. By using the AOP framework, we highlight current gaps in mechanistic understanding that need to be addressed and simultaneously point towards events causative of pubertal disturbance that could be exploited for alternative test methods. We propose 6 pAOPs that could explain the disruption of pubertal timing by interfering with the central hypothalamic trigger of puberty, GnRH neurons, and by so doing highlight specific modes of action that could be targeted for alternative test method development.
    MeSH term(s) Adverse Outcome Pathways ; Endocrine Disruptors/adverse effects ; Female ; Humans ; Puberty, Precocious/chemically induced ; Puberty, Precocious/metabolism
    Chemical Substances Endocrine Disruptors
    Language English
    Publishing date 2021-02-26
    Publishing country Switzerland
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 123303-8
    ISSN 1423-0194 ; 0028-3835
    ISSN (online) 1423-0194
    ISSN 0028-3835
    DOI 10.1159/000515478
    Database MEDical Literature Analysis and Retrieval System OnLINE

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