Browsing by Author "Mosso, Lorena M."

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    A polymorphic GT short tandem repeat affecting beta-ENaC mRHA expression is associated with low renin essential hypertension
    (OXFORD UNIV PRESS, 2007) Gonzalez, Alexis A.; Carvajal, Cristian A.; Riquelme, Erick; Krall, Paola M.; Munoz, Carlos R.; Mosso, Lorena M.; Kalergis, Alexis M.; Fardella, Carlos E.
    Background: The epithelial sodium channel (ENaC) is a candidate gene associated with the development of essential hypertension. A potentially polymorphic repetitive region (GT dinucleotide short tandem repeat [STR]) was identified in intron 8 of beta-ENaC gene (SCNN I B). The aim of this study was to identify the prevalence and distribution of a polymorphic GT-STR in SCNN1B in Chilean essential hypertensive (EH) patients and to analyze the correlation between the different genotypes with plasma renin activity (PRA) and serum aldosterone (SA), and furthermore, to evaluate the beta-ENaC gene expression in vitro.
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    A possible association between primary aldosteronism and a lower beta-cell function
    (LIPPINCOTT WILLIAMS & WILKINS, 2007) Mosso, Lorena M.; Carvajal, Cristian A.; Maiz, Alberto; Ortiz, Eugenia H.; Castillo, Carmen R.; Artigas, Rocio A.; Fardella, Carlos E.
    Objective Primary aldosteronism ( PA) is the most common secondary cause of hypertension and recently has been implicated as a cause of impaired glucose tolerance. We investigated the glucose insulin sensitivity and insulin secretion in patients with idiopathic primary aldosteronism.
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    Altered Chemokine Receptor Expression in Papillary Thyroid Cancer
    (MARY ANN LIEBERT, INC, 2009) Gonzalez, Hernan E.; Leiva, Andrea; Tobar, Hugo; Boehmwald, Karen; Tapia, Grace; Torres, Javiera; Mosso, Lorena M.; Bueno, Susan M.; Gonzalez, Pablo; Kalergis, Alexis M.; Riedel, Claudia A.
    Background: Papillary thyroid cancer (PTC), the most prevalent type of differentiated thyroid carcinoma, displays a strikingly high frequency of lymph node metastasis (LNM). Recent data suggest that chemokines can play an important role in promoting tumor progression and metastatic migration of tumor cells. Here we have evaluated whether PTC tissues express a different pattern of chemokine receptors and if the expression of these receptors correlates with LNM.
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    Increased urinary glucocorticoid metabolites are associated with metabolic syndrome, hypoadiponectinemia, insulin resistance and beta cell dysfunction
    (ELSEVIER SCIENCE INC, 2011) Baudrand, Rene; Campino, Carmen; Carvajal, Cristian A.; Olivieri, Oliviero; Guidi, Giancesare; Faccini, Giovanni; Sateler, Javiera; Cornejo, Javiera; San Martin, Betty; Dominguez, Jose M.; Cerda, Jaime; Mosso, Lorena M.; Owen, Gareth I.; Kalergis, Alexis M.; Fardella, Carlos E.
    Metabolic syndrome (MetS) may have increased cortisol (F) production caused by 11 beta-hydroxysteroid dehydrogenase 1 (11 beta-HSD1) in liver and adipose tissue and/or by HPA axis dysregulation. F is then mainly metabolized by liver reductases into inactive tetrahydrometabolites (THMs). We measured THM levels in patients with or without MetS and evaluate the correlation between THMs and anthropometric and biochemical parameters. We recruited 221 subjects, of whom 130 had MetS by ATP III. We evaluated F, cortisone (E), adipokines, glucose, insulin and lipid profiles as well as urinary (24 h) F. E and THM levels. beta Cell function was estimated by the HOMA Calculator. We observed that patients with MetS showed higher levels of THMs, HOMA-IR and leptin and lower levels of adiponectin and HOMA-beta but no differences in F and E in plasma or urine. THM was associated with weight (r = +0.44, p < 0,001), waist circumference (r = +0.38, p < 0.01). glycemia (r = +0.37, p < 0.01), and triglycerides (r = +0.18, p = 0.06) and negatively correlated with adiponectin (r = -0.36, p < 0.001), HOMA-beta (r = -0.21, p < 0.001) and HDL (r = -0.29, p < 0.01). In a logistic regression model, THM levels were associated with hypertension, hyperglycemia and dyslipidemia. We conclude that MetS is associated with increased urinary THMs but not with F and E levels in plasma or urine. Increased levels of THM, reflecting the daily cortisol production subsequently metabolized, are correlated with hypoadiponectinemia, hypertension, dyslipidemia, insulin resistance and beta cell dysfunction. A subtle increased in glucocorticoid production may further account for the phenotypic and biochemical similarities observed in central obesity and Cushing's syndrome. (C) 2011 Elsevier Inc. All rights reserved.