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  1. Article: Clinical Update on Congenital Adrenal Hyperplasia: Recommendations from a Multidisciplinary Adrenal Program.

    Uslar, Thomas / Olmos, Roberto / Martínez-Aguayo, Alejandro / Baudrand, René

    Journal of clinical medicine

    2023  Volume 12, Issue 9

    Abstract: Congenital adrenal hyperplasia (CAH) is a common genetic disorder in endocrinology, especially its milder clinical presentation, often caused by a partial or total deficiency of the 21-hydroxylase enzyme located in the adrenal cortex. CAH is ... ...

    Abstract Congenital adrenal hyperplasia (CAH) is a common genetic disorder in endocrinology, especially its milder clinical presentation, often caused by a partial or total deficiency of the 21-hydroxylase enzyme located in the adrenal cortex. CAH is characterized by the overproduction of androgen, along with variable degrees of cortisol and aldosterone deficiency. The age at diagnosis can provide some information about underlying mutations, with those diagnosed at birth/early infancy more likely to have severe enzymatic defects, which may include adrenal insufficiency, sexual development disorders, short stature in adulthood, hirsutism, and a higher risk for metabolic syndrome and infertility. Non-classic CAH, a milder form of CAH, is usually manifested later in life and is a common differential diagnosis of Polycystic Ovary Syndrome and should be actively evaluated during initial studies of clinical or biochemical hyperandrogenism. The main goals of CAH treatment are hormone supplementation for severe cases, controlling adrenal androgen overproduction to minimize long-term side effects, managing fertility and genetic counseling, and optimizing patients' quality of life.
    Language English
    Publishing date 2023-04-26
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm12093128
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Reporte de caso de feocromocitoma bilateral asociado a mutación del gen TMEM127. Primer caso chileno.

    Delgado, José F / Pérez E, María Javiera / Delgado, Dasha / Lagos, Carlos / Baudrand, René / Uslar, Thomas

    Revista medica de Chile

    2023  Volume 150, Issue 8, Page(s) 1115–1118

    Abstract: Up to 40% of Pheochromocytoma/paraganglioma syndromes are associated with germline mutations. Therefore, they are considered familial and heritable. We report a 65 year old woman with hypertension, bilateral adrenal nodules found in the CT scan and ... ...

    Title translation Bilateral pheochromocytoma associates with TMEM127 gene mutation. Report of one case.
    Abstract Up to 40% of Pheochromocytoma/paraganglioma syndromes are associated with germline mutations. Therefore, they are considered familial and heritable. We report a 65 year old woman with hypertension, bilateral adrenal nodules found in the CT scan and elevated urinary metanephrines. Her genetic testing showed a c.117_120delGTCT TMEM127 gene mutation. She was subjected to a laparoscopic bilateral adrenal excision. After five years of follow up, no recurrence of the disease has been recorded.
    MeSH term(s) Humans ; Female ; Aged ; Pheochromocytoma/diagnostic imaging ; Pheochromocytoma/genetics ; Pheochromocytoma/surgery ; Genetic Predisposition to Disease ; Membrane Proteins/genetics ; Mutation ; Germ-Line Mutation ; Adrenal Gland Neoplasms/diagnostic imaging ; Adrenal Gland Neoplasms/genetics
    Chemical Substances Membrane Proteins ; TMEM127 protein, human
    Language Spanish
    Publishing date 2023-04-15
    Publishing country Chile
    Document type Case Reports ; English Abstract ; Journal Article
    ZDB-ID 732136-3
    ISSN 0717-6163 ; 0034-9887
    ISSN (online) 0717-6163
    ISSN 0034-9887
    DOI 10.4067/S0034-98872022000801115
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The interplay between leptin, glucocorticoids, and GLP1 regulates food intake and feeding behaviour.

    Perez-Leighton, Claudio / Kerr, Bredford / Scherer, Philipp E / Baudrand, René / Cortés, Víctor

    Biological reviews of the Cambridge Philosophical Society

    2023  

    Abstract: Nutritional, endocrine, and neurological signals converge in multiple brain centres to control feeding behaviour and food intake as part of the allostatic regulation of energy balance. Among the several neuroendocrine systems involved, the leptin, ... ...

    Abstract Nutritional, endocrine, and neurological signals converge in multiple brain centres to control feeding behaviour and food intake as part of the allostatic regulation of energy balance. Among the several neuroendocrine systems involved, the leptin, glucocorticoid, and glucagon-like peptide 1 (GLP1) systems have been extensively researched. Leptin is at the top hierarchical level since its complete absence is sufficient to trigger severe hyperphagia. Glucocorticoids are key regulators of the energy balance adaptation to stress and their sustained excess leads to excessive adiposity and metabolic perturbations. GLP1 participates in metabolic adaptation to food intake, regulating insulin secretion and satiety by parallel central and peripheral signalling systems. Herein, we review the brain and peripheral targets of these three hormone systems that integrate to regulate food intake, feeding behaviour, and metabolic homeostasis. We examine the functional relationships between leptin, glucocorticoids, and GLP1 at the central and peripheral levels, including the cross-regulation of their circulating levels and their cooperative or antagonistic actions at different brain centres. The pathophysiological roles of these neuroendocrine systems in dysregulated intake are explored in the two extremes of body adiposity - obesity and lipodystrophy - and eating behaviour disorders.
    Language English
    Publishing date 2023-12-10
    Publishing country England
    Document type Journal Article
    ZDB-ID 1423558-4
    ISSN 1469-185X ; 0006-3231 ; 1464-7931
    ISSN (online) 1469-185X
    ISSN 0006-3231 ; 1464-7931
    DOI 10.1111/brv.13039
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article: Corrigendum: Impact of short and long exposure to cafeteria diet on food intake and white adipose tissue lipolysis mediated by glucagon-like peptide 1 receptor.

    Mattar, Pamela / Jaque, Cristian / Teske, Jennifer A / Morselli, Eugenia / Kerr, Bredford / Cortés, Víctor / Baudrand, Rene / Perez-Leighton, Claudio E

    Frontiers in endocrinology

    2023  Volume 14, Page(s) 1240246

    Abstract: This corrects the article DOI: 10.3389/fendo.2023.1164047.]. ...

    Abstract [This corrects the article DOI: 10.3389/fendo.2023.1164047.].
    Language English
    Publishing date 2023-06-26
    Publishing country Switzerland
    Document type Published Erratum
    ZDB-ID 2592084-4
    ISSN 1664-2392
    ISSN 1664-2392
    DOI 10.3389/fendo.2023.1240246
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The Low-Renin Hypertension Phenotype: Genetics and the Role of the Mineralocorticoid Receptor.

    Baudrand, Rene / Vaidya, Anand

    International journal of molecular sciences

    2018  Volume 19, Issue 2

    Abstract: A substantial proportion of patients with hypertension have a low or suppressed renin. This phenotype of low-renin hypertension (LRH) may be the manifestation of inherited genetic syndromes, acquired somatic mutations, or environmental exposures. ... ...

    Abstract A substantial proportion of patients with hypertension have a low or suppressed renin. This phenotype of low-renin hypertension (LRH) may be the manifestation of inherited genetic syndromes, acquired somatic mutations, or environmental exposures. Activation of the mineralocorticoid receptor is a common final mechanism for the development of LRH. Classically, the individual causes of LRH have been considered to be rare diseases; however, recent advances suggest that there are milder and "non-classical" variants of many LRH-inducing conditions. In this regard, our understanding of the underlying genetics and mechanisms accounting for LRH, and therefore, potentially the pathogenesis of a large subset of essential hypertension, is evolving. This review will discuss the potential causes of LRH, with a focus on implicated genetic mechanisms, the expanding recognition of non-classical variants of conditions that induce LRH, and the role of the mineralocorticoid receptor in determining this phenotype.
    MeSH term(s) Animals ; Glucocorticoids/metabolism ; Humans ; Hypertension/genetics ; Hypertension/metabolism ; Phenotype ; Receptors, Mineralocorticoid/genetics ; Receptors, Mineralocorticoid/metabolism ; Renin/deficiency ; Renin/genetics ; Renin/metabolism
    Chemical Substances Glucocorticoids ; Receptors, Mineralocorticoid ; Renin (EC 3.4.23.15)
    Language English
    Publishing date 2018-02-11
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms19020546
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Actualización en el manejo clínico de la hipertensión hiporreninémica.

    Macchiavello, Stefano / Fardella, Carlos / Baudrand, René

    Revista medica de Chile

    2019  Volume 147, Issue 4, Page(s) 490–498

    Abstract: The renin-angiotensin-aldosterone system modulates volume, sodium and potassium homeostasis. In the setting of a high sodium diet, up to 30% of patients with hypertension have a low or suppressed renin and increased volume. This phenotype of low renin ... ...

    Title translation Update in the clinical management of low renin hypertension.
    Abstract The renin-angiotensin-aldosterone system modulates volume, sodium and potassium homeostasis. In the setting of a high sodium diet, up to 30% of patients with hypertension have a low or suppressed renin and increased volume. This phenotype of low renin hypertension (LRH) is multifactorial and includes infrequent inherited genetic syndromes, milder phenotypes of classic diseases and environmental exposures. All these conditions have in common a higher cardiovascular risk mediated by the over activation of the mineralocorticoid receptor (MR), present not only in the kidney, but also in vasculature, myocardium and adipocytes. Consequently, the aim of LRH treatment goes beyond the control of blood pressure and requires antagonizing MR with specific pharmacologic agents, pursuing normalization of renin as a clinical objective. Due to the unusual evaluation of renin status by non-endocrinologists and lack of disease awareness, only a minority of hypertensive patients receive this pathophysiologically-driven treatment that should reduce cardiovascular outcomes.
    MeSH term(s) Aldosterone/metabolism ; Disease Management ; Humans ; Hypertension/metabolism ; Hypertension/physiopathology ; Hypertension/therapy ; Receptors, Mineralocorticoid/metabolism ; Renin/metabolism ; Renin-Angiotensin System/physiology
    Chemical Substances Receptors, Mineralocorticoid ; Aldosterone (4964P6T9RB) ; Renin (EC 3.4.23.15)
    Language Spanish
    Publishing date 2019-07-26
    Publishing country Chile
    Document type Journal Article ; Review
    ZDB-ID 732136-3
    ISSN 0717-6163 ; 0034-9887
    ISSN (online) 0717-6163
    ISSN 0034-9887
    DOI 10.4067/S0034-98872019000400490
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Caracterización clínica de pacientes chilenos con displasia fibrosa/síndrome de McCune-Albright.

    Jiménez, Catalina / Schneider, Paulina / Baudrand, Rene / García, Hernán / Martínez, Alejandro / Mendoza, Carolina / Grob, Francisca / Seiltgens, Cristián / Florenzano, Pablo

    Revista medica de Chile

    2023  Volume 150, Issue 10, Page(s) 1275–1282

    Abstract: Background: Fibrous Dysplasia/McCune-Albright Syndrome (FD/MAS) is characterized by a spectrum of manifestations that may include fibrous dysplasia of bone and multiple endocrinopathies.: Aim: To describe the clinical spectrum, the study and follow- ... ...

    Title translation Clinical features of Chilean patients with Fibrous Dysplasia/McCune-Albright Syndrome.
    Abstract Background: Fibrous Dysplasia/McCune-Albright Syndrome (FD/MAS) is characterized by a spectrum of manifestations that may include fibrous dysplasia of bone and multiple endocrinopathies.
    Aim: To describe the clinical spectrum, the study and follow-up of patients with FD/MAS cared at our institution.
    Material and methods: Review of medical records of 12 pediatric and adult patients (11 women) who met the clinical and genetic diagnostic criteria for FD/ MAS.
    Results: The patients' mean age at diagnosis was 4.9 ± 5.5 years. The most common initial clinical manifestation was peripheral precocious puberty (PPP) in 67% of patients and 75% had café-au-lait spots. Fibrous dysplasia was present in 75% of patients and the mean age at diagnosis was 7.9 ± 4.7 years. Ten patients had a bone scintigraphy, with an age at the first examination that varied between 2 and 38 years of age. The most frequent location of dysplasia was craniofacial and appendicular. No patient had a recorded history of cholestasis, hepatitis, or pancreatitis. In four patients, a genetic study was performed that was positive for the pathogenic variant of guanine nucleotide binding protein, alpha stimulating (GNAS).
    Conclusions: These patients demonstrate the variable nature of the clinical presentation and study of FD/MAS. It is essential to increase the index of diagnostic suspicion and adherence to international recommendations.
    MeSH term(s) Adult ; Humans ; Child ; Female ; Child, Preschool ; Adolescent ; Young Adult ; Fibrous Dysplasia, Polyostotic/diagnostic imaging ; Fibrous Dysplasia, Polyostotic/genetics ; Chile/epidemiology ; Fibrous Dysplasia of Bone/diagnostic imaging ; Puberty, Precocious/etiology ; Puberty, Precocious/genetics ; Cafe-au-Lait Spots/genetics
    Language Spanish
    Publishing date 2023-06-26
    Publishing country Chile
    Document type English Abstract ; Journal Article
    ZDB-ID 732136-3
    ISSN 0717-6163 ; 0034-9887
    ISSN (online) 0717-6163
    ISSN 0034-9887
    DOI 10.4067/S0034-98872022001001275
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The Low-Renin Hypertension Phenotype

    Rene Baudrand / Anand Vaidya

    International Journal of Molecular Sciences, Vol 19, Iss 2, p

    Genetics and the Role of the Mineralocorticoid Receptor

    2018  Volume 546

    Abstract: A substantial proportion of patients with hypertension have a low or suppressed renin. This phenotype of low-renin hypertension (LRH) may be the manifestation of inherited genetic syndromes, acquired somatic mutations, or environmental exposures. ... ...

    Abstract A substantial proportion of patients with hypertension have a low or suppressed renin. This phenotype of low-renin hypertension (LRH) may be the manifestation of inherited genetic syndromes, acquired somatic mutations, or environmental exposures. Activation of the mineralocorticoid receptor is a common final mechanism for the development of LRH. Classically, the individual causes of LRH have been considered to be rare diseases; however, recent advances suggest that there are milder and “non-classical” variants of many LRH-inducing conditions. In this regard, our understanding of the underlying genetics and mechanisms accounting for LRH, and therefore, potentially the pathogenesis of a large subset of essential hypertension, is evolving. This review will discuss the potential causes of LRH, with a focus on implicated genetic mechanisms, the expanding recognition of non-classical variants of conditions that induce LRH, and the role of the mineralocorticoid receptor in determining this phenotype.
    Keywords renin ; low-renin ; hypertension ; mineralocorticoid receptor ; genetics ; aldosterone ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Subject code 610
    Language English
    Publishing date 2018-02-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: Impact of short and long exposure to cafeteria diet on food intake and white adipose tissue lipolysis mediated by glucagon-like peptide 1 receptor.

    Mattar, Pamela / Jaque, Cristian / Teske, Jennifer A / Morselli, Eugenia / Kerr, Bredford / Cortés, Víctor / Baudrand, Rene / Perez-Leighton, Claudio E

    Frontiers in endocrinology

    2023  Volume 14, Page(s) 1164047

    Abstract: Introduction: The modern food environment facilitates excessive calorie intake, a major driver of obesity. Glucagon-like peptide 1 (GLP1) is a neuroendocrine peptide that has been the basis for developing new pharmacotherapies against obesity. The GLP1 ... ...

    Abstract Introduction: The modern food environment facilitates excessive calorie intake, a major driver of obesity. Glucagon-like peptide 1 (GLP1) is a neuroendocrine peptide that has been the basis for developing new pharmacotherapies against obesity. The GLP1 receptor (GLP1R) is expressed in central and peripheral tissues, and activation of GLP1R reduces food intake, increases the expression of thermogenic proteins in brown adipose tissue (BAT), and enhances lipolysis in white adipose tissue (WAT). Obesity decreases the efficiency of GLP1R agonists in reducing food intake and body weight. Still, whether palatable food intake before or during the early development of obesity reduces the effects of GLP1R agonists on food intake and adipose tissue metabolism remains undetermined. Further, whether GLP1R expressed in WAT contributes to these effects is unclear.
    Methods: Food intake, expression of thermogenic BAT proteins, and WAT lipolysis were measured after central or peripheral administration of Exendin-4 (EX4), a GLP1R agonist, to mice under intermittent-short exposure to CAF diet (3 h/d for 8 days) or a longer-continuous exposure to CAF diet (24 h/d for 15 days).
    Results: During intermittent-short exposure to CAF diet (3 h/d for 8 days), third ventricle injection (ICV) and intra-peritoneal administration of EX4 reduced palatable food intake. Yet, during a longer-continuous exposure to CAF diet (24 h/d for 15 days), only ICV EX4 administration reduced food intake and body weight. However, this exposure to CAF diet blocked the increase in uncoupling protein 1 (UCP1) caused by ICV EX4 administration in mice fed control diet. Finally, GLP1R expression in WAT was minimal, and EX4 failed to increase lipolysis
    Discussion: Exposure to a CAF diet during the early stages of obesity reduces the effects of peripheral and central GLP1R agonists, and WAT does not express a functional GLP1 receptor. These data support that exposure to the obesogenic food environment, without the development or manifestation of obesity, can alter the response to GLP1R agonists. .
    MeSH term(s) Mice ; Animals ; Lipolysis ; Glucagon-Like Peptide-1 Receptor/agonists ; Diet ; Obesity/etiology ; Obesity/metabolism ; Exenatide/pharmacology ; Exenatide/metabolism ; Body Weight ; Glucagon-Like Peptide 1/metabolism ; Adipose Tissue, White/metabolism ; Eating
    Chemical Substances Glucagon-Like Peptide-1 Receptor ; Exenatide (9P1872D4OL) ; Glucagon-Like Peptide 1 (89750-14-1)
    Language English
    Publishing date 2023-05-24
    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.2023.1164047
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Response to Associations Among Sodium Intake, Endothelial Dysfunction, and Endothelial Damage Biomarkers in Hypertension (AJH-D-18-00331).

    Campino, Carmen / Baudrand, Rene / Fardella, Carlos E

    American journal of hypertension

    2018  Volume 31, Issue 12, Page(s) e9

    MeSH term(s) Biomarkers ; Blood Pressure ; Humans ; Hypertension ; Sodium, Dietary
    Chemical Substances Biomarkers ; Sodium, Dietary
    Language English
    Publishing date 2018-10-05
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 639383-4
    ISSN 1941-7225 ; 1879-1905 ; 0895-7061
    ISSN (online) 1941-7225 ; 1879-1905
    ISSN 0895-7061
    DOI 10.1093/ajh/hpy151
    Database MEDical Literature Analysis and Retrieval System OnLINE

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