Browsing by Author "Tapia-Castillo, Alejandra"

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    Classic and nonclassic apparent mineralocorticoid excess syndrome
    (Endocrine Society, 2020) Carvajal, Cristián A.; Tapia-Castillo, Alejandra; Vecchiola, Andrea; Baudrand, Rene; Fardella, Carlos
    © 2020 Endocrine Society. All rights reserved.Context: Arterial hypertension (AHT) is one of the most frequent pathologies in the general population. Subtypes of essential hypertension characterized by low renin levels allowed the identification of 2 different clinical entities: aldosterone-mediated mineralocorticoid receptor (MR) activation and cortisol-mediated MR activation. Evidence Acquisition: This review is based upon a search of Pubmed and Google Scholar databases, up to August 2019, for all publications relating to endocrine hypertension, apparent mineralocorticoid excess (AME) and cortisol (F) to cortisone (E) metabolism. Evidence Synthesis: The spectrum of cortisol-mediated MR activation includes the classic AME syndrome to milder (nonclassic) forms of AME, the latter with a much higher prevalence (7.1%) than classic AME but different phenotype and genotype. Nonclassic AME (NC-AME) is mainly related to partial 11βHSD2 deficiency associated with genetic variations and epigenetic modifications (first hit) and potential additive actions of endogenous or exogenous inhibitors (ie, glycyrrhetinic acid-like factors [GALFS]) and other factors (ie, age, high sodium intake) (second hit). Subjects with NC-AME are characterized by a high F/E ratio, low E levels, normal to elevated blood pressure, low plasma renin and increased urinary potassium excretion. NCAME condition should benefit from low-sodium and potassium diet recommendations and monotherapy with MR antagonists. Conclusion: NC-AME has a higher prevalence and a milder phenotypical spectrum than AME. NC-AME etiology is associated to a first hit (gene and epigene level) and an additive second hit. NC-AME subjects are candidates to be treated with MR antagonists aimed to improve blood pressure, end-organ damage, and modulate the renin levels.
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    Identification of novel 11β-HSD1 inhibitors by combined ligand- and structure-based virtual screening
    (2014) Lagos Arévalo, Carlos Fernando; Vecchiola Cárdenas, Andrea Paola; Allende, Fidel; Fuentes Zúñiga, Cristóbal Andrés; Tichauer, Juan E.; Valdivia, Carolina; Solari Gajardo, Sandra; Campino Johnson, María del Carmen; Tapia-Castillo, Alejandra; Baudrand Biggs, René; Villarroel, Pia; Cifuentes, Mariana; Owen, Gareth Ivor; Carvajal, Cristian A.; Fardella B., Carlos
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    Usefulness and Pitfalls in Sodium Intake Estimation : Comparison of Dietary Assessment and Urinary Excretion in Chilean Children and Adults
    (2016) Campino Johnson, María del Carmen; Hill, Caroline; Baudrand Biggs, René; Martínez Aguayo, Alejandro Gregorio; Aglony Imbarack, Marlene Elizabeth; Carrasco, Carmen A.; Ferrada, Clarita; Loureiro Pérez, Carolina Andrea; Vecchiola Cárdenas, Andrea Paola; Bancalari, Rodrigo; Grob Lunecke, Francisca Andrea; Carvajal, Cristian A.; Lagos, Carlos F.; Valdivia, Carolina; Tapia-Castillo, Alejandra; Fuentes Zúñiga, Cristóbal Andrés; Mendoza, Carolina; García Bruce, Hernán; Uauy, Ricardo; Fardella B., Carlos; Campino Johnson, María del Carmen; Hill, Caroline; Baudrand Biggs, René; Martínez Aguayo, Alejandro Gregorio; Aglony Imbarack, Marlene Elizabeth; Carrasco, Carmen A.; Ferrada, Clarita; Loureiro Pérez, Carolina Andrea; Vecchiola Cárdenas, Andrea Paola; Bancalari, Rodrigo; Grob Lunecke, Francisca Andrea; Carvajal, Cristian A.; Lagos, Carlos F.; Valdivia, Carolina; Tapia-Castillo, Alejandra; Fuentes, Cristóbal A.; Mendoza, Carolina; García Bruce, Hernán; Uauy, Ricardo; Fardella B., Carlos