37 results on '"Vargas-Uricoechea H"'
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2. Hipotiroidismo espontáneo del adulto en Colombia, es tiempo de investigar
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Vargas-Uricoechea, H., primary
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- 2021
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3. Diastolic Dysfunction in Women with Subclinical Hypothyroidism.
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Vargas Uricoechea, H, primary
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- 2010
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4. Análisis del estado poblacional del yodo en Colombia y la necesidad de modificar los niveles de yodación universal de la sal
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Vargas Uricoechea, H., primary, Murillo Palacios, J., additional, and Ramírez Bejarano, L. E., additional
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- 2020
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5. Aspectos globales de la epidemiología y de la toma de decisiones en la pandemia por COVID-19
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Vargas-Uricoechea, H., primary and Vargas-Sierra, H., additional
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- 2020
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6. Control of blood pressure and cardiovascular outcomes in type 2 diabetes
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Vargas-Uricoechea Hernando and Cáceres-Acosta Manuel Felipe
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diabetes ,arterial hypertension ,cardiovascular outcomes ,anti-hypertensive drugs ,Medicine - Abstract
High blood pressure in patients with diabetes mellitus results in a significant increase in the risk of cardiovascular events and mortality. The current evidence regarding the impact of intervention on blood pressure levels (in accordance with a specific threshold) is not particularly robust. Blood pressure control is more difficult to achieve in patients with diabetes than in non-diabetic patients, and requires using combination therapy in most patients. Different management guidelines recommend initiating pharmacological therapy with values >140/90 mm/Hg; however, an optimal cut point for this population has not been established. Based on the available evidence, it appears that blood pressure targets will probably have to be lower than
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- 2018
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7. Vitamin D nutritional status in the adult population in Colombia – An analytical cross-sectional study
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Vargas-Uricoechea Hernando, Mera-Mamián Andry, Pinzón-Fernández María Virginia, and Agredo Valentina
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Biological sciences ,Chemistry ,Environmental science ,Food science ,Health sciences ,Vitamin D ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Background: The key role of Vitamin D is to maintain an adequate calcium and phosphorus metabolism. Vitamin D plays an antagonistic role with the parathyroid hormone. 25 OH Vitamin D is the major circulating form and the best indicator to monitor Vitamin D levels. Methods: A cross-sectional study was conducted in 1339 individuals ≥18 years old. The main objective was to establish the nutritional status of Vitamin D and its association with PTH and ionized calcium levels. Other objectives were to compare the levels of 25 OH Vitamin D based on sun exposure habits, and to identify the minimum cut-off point for the levels of 25 OH Vitamin D that could give rise to a concomitant increase in PTH and ionized calcium levels. Results: 14.2% of participants presented Vitamin D deficiency, and 28.8% presented insufficiency; ≥89% of the participants with deficiency or insufficiency were exposed to sunlight 30 ng/mL was associated with a more stable and “flat” PTH value. The median of 25 OH Vit-D associated with hypercalcemia was
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- 2020
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8. Mindfulness-Based Interventions and the Hypothalamic-Pituitary-Adrenal Axis: A Systematic Review.
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Vargas-Uricoechea H, Castellanos-Pinedo A, Urrego-Noguera K, Vargas-Sierra HD, Pinzón-Fernández MV, Barceló-Martínez E, and Ramírez-Giraldo AF
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Background: Numerous studies have evaluated the effect that mindfulness-based interventions (MBIs) have on multiple health outcomes. For its part, stress is a natural response to environmental disturbances and within the associated metabolic responses, alterations in cortisol levels and their measurement in different tissues are a way to determine the stress state of an individual. Therefore, it has been proposed that MBIs can modify cortisol levels., Methods and Results: The objective of this systematic review was to analyze and summarize the different studies that have evaluated the effect of MBIs on cortisol levels. The following databases were consulted: MEDLINE, AMED, CINAHL, Web of Science, Science Direct, PsycINFO, SocINDEX, PubMed, the Cochrane Library and Scopus. The search terms "mindfulness", "mindfulness-based interventions" and "cortisol" were used (and the search was limited to studies from January 1990 to May 2024). In order to reduce selection bias, each article was scrutinized using the JBI Critical Appraisal Checklist independently by two authors. We included those studies with specified intervention groups with at least one control group and excluded duplicate studies or those in which the intervention or control group was not adequately specified. Significant changes in cortisol following MBIs were found in 25 studies, while 10 found no changes. The small sample size, lack of randomization, blinding, and probable confounding and interaction variables stand out in these studies., Conclusion: MBIs have biological plausibility as a means of explaining a positive effect on cortisol levels; however, the weakness of the studies and the absence of robust designs makes it difficult to establish a causal association between both variables., Registration Number: INPLASY2024110017.
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- 2024
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9. Zinc and Ferritin Levels and Their Associations with Functional Disorders and/or Thyroid Autoimmunity: A Population-Based Case-Control Study.
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Vargas-Uricoechea H, Urrego-Noguera K, Vargas-Sierra H, and Pinzón-Fernández M
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- Humans, Female, Male, Case-Control Studies, Middle Aged, Adult, Hypothyroidism blood, Hypothyroidism epidemiology, Hypothyroidism immunology, Thyroid Gland metabolism, Thyroid Gland immunology, Aged, Autoantibodies blood, Autoantibodies immunology, Hyperthyroidism blood, Hyperthyroidism epidemiology, Hyperthyroidism immunology, Thyroid Diseases blood, Thyroid Diseases epidemiology, Thyroid Diseases immunology, Zinc blood, Ferritins blood, Autoimmunity
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Population zinc and iron status appear to be associated with an increased risk of thyroid function abnormalities and thyroid autoimmunity (AITD). In the present study, we aimed to determine whether zinc and/or iron levels (assessed by ferritin levels) were associated with the presence of AITD and with alterations in thyroid function. A population-based case-control study ( n = 1048) was conducted (cases: n = 524; controls: n = 524). Participants were measured for blood concentrations of zinc and ferritin, TSH, FT4, FT3, and thyroid autoantibodies. No significant differences were found in relation to ferritin levels between cases and controls. Among cases, the prevalence of low zinc levels in those with hypothyroidism (both subclinical and overt) was 49.1% [odds ratio (OR) of low zinc levels: 5.926; 95% CI: 3.756-9.351]. The prevalence of low zinc levels in participants with hyperthyroidism (both subclinical and overt) was 37.5% [OR of low zinc levels: 3.683; 95% CI: 1.628-8.33]. The zinc value that best discriminated the highest frequency of AITD was 70.4 µg/dL [sensitivity: 0.947, 1-specificity: 0.655, specificity: 0.345]. The highest frequency of AITD was calculated based on a zinc value <70 µg/dL (relative to a normal value), with this frequency being significantly higher in cases than in controls [OR: 9.3; 95% CI: 6.1-14.3 ( p = 0.001)]. In conclusion, the results of our study suggest that zinc deficiency is associated with an increased frequency of functional thyroid disorders and thyroid autoimmunity.
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- 2024
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10. LT4/LT3 Combination Therapy vs. Monotherapy with LT4 for Persistent Symptoms of Hypothyroidism: A Systematic Review.
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Vargas-Uricoechea H and Wartofsky L
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- Humans, Drug Therapy, Combination methods, Thyrotropin blood, Treatment Outcome, Hypothyroidism blood, Hypothyroidism diagnosis, Hypothyroidism drug therapy, Thyroxine therapeutic use, Triiodothyronine therapeutic use
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Regardless of the cause, hypothyroidism should be treated with levothyroxine. The objectives of management are the normalization of TSH levels and the relief of symptoms. In general, the vast majority of patients who achieve normalization of TSH levels show a resolution of symptoms; however, for a small number of individuals, symptoms persist (despite adequate control of TSH). This scenario generates a dilemma in the therapeutic approach to these patients, because even when excluding other causes or concomitant diseases that can explain the persistence of symptoms, pharmacological management strategies are scarce. Consequently, the efficacy of some less conventional approaches to therapy, such as the use of LT3 monotherapy, desiccated thyroid extracts, and LT4/LT3 combinations, in addressing persistent hypothyroid symptoms have been evaluated in multiple studies. The majority of these studies did not observe a significant benefit from these "nonconventional" therapies in comparison to results with LT4 monotherapy alone. Nevertheless, some studies report that a significant proportion of patients prefer an alternative to monotherapy with LT4. The most common approach has been to prescribe a combination of LT4 and LT3, and this review describes and analyzes the current evidence of the efficacy of LT4/LT3 combination therapy vs. LT4 monotherapy in addressing persistent hypothyroidism symptoms to provide suggested guidelines for clinicians in the management of these patients.
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- 2024
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11. Autoimmune Thyroid Disease and Differentiated Thyroid Carcinoma: A Review of the Mechanisms That Explain an Intriguing and Exciting Relationship.
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Vargas-Uricoechea H
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Autoimmune thyroid disease is a complex and highly frequent disease, where a wide variety of genetic, epigenetic and environmental factors (among others) come together and interact, and is characterized by the presence of two clinical outcomes: hypothyroidism (in Hashimoto's thyroiditis) and hyperthyroidism (in Graves-Basedow disease). For its part, differentiated thyroid carcinoma (mainly papillary carcinoma) is the most common type of cancer affecting the thyroid (and one of the most prevalent worldwide). An important co-occurrence between autoimmune thyroid disease and differentiated thyroid carcinoma has been documented. In this article, studies that have evaluated possible associations and relationships between autoimmune thyroid disease and differentiated thyroid cancer are systematically described and summarized. To date, the underlying mechanism that explains this association is inflammation; however, the characteristics and designs of the studies evaluated do not yet allow a causal relationship between the two entities to be established. These aspects have made it difficult to establish "causality" in the continuum of the pathogenesis between both conditions., Competing Interests: None to declare., (Copyright 2024, Vargas-Uricoechea.)
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- 2024
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12. The Usefulness of Thyroid Antibodies in the Diagnostic Approach to Autoimmune Thyroid Disease.
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Vargas-Uricoechea H, Nogueira JP, Pinzón-Fernández MV, and Schwarzstein D
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Autoimmune thyroid disease (AITD) refers to a spectrum of various diseases, with two extremes of clinical presentation, hypothyroidism (Hashimoto's thyroiditis (HT) and hyperthyroidism (Graves-Basedow disease (GBD)). Both conditions are characterized by presenting a cellular and humoral autoimmune reaction, with an increase in the synthesis and secretion of antibodies directed toward various thyroid antigens, together with a phenomenon of thyrocyte necrosis and apoptosis (in HT) and a persistent thyrotropin-receptor stimulation (in GBD). The diagnosis of both entities is based on clinical, laboratory, and imaging findings. Three major anti-thyroid antibodies have been described, those directed against the TSH receptor (TRAb), against thyroid peroxidase (TPOAb), and against thyroglobulin (TgAb). Each of these autoantibodies plays a fundamental role in the diagnostic approach of autoimmune thyroid disease. TRAbs are the hallmark of GBD, and additionally, they are predictors of response to disease treatment, among other utilities. Likewise, TPOAb and TgAb allow for identifying individuals with a higher risk of progression to hypothyroidism; the positivity of one or both autoantibodies defines the presence of thyroid autoimmunity. In this review, the usefulness of anti-thyroid antibodies in the diagnostic approach to autoimmune thyroid disease is described.
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- 2023
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13. Relationship of Subclinical Hypothyroidism on Epicardial Adipose Tissue: A Systematic Review and Meta-Analysis.
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Closs C, Vargas-Uricoechea H, Schwarzstein D, Lobo M, Lagranja E, Godinez-Leiva E, and Nogueira JP
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- Humans, Obesity complications, Pericardium diagnostic imaging, Adipose Tissue, Heart Disease Risk Factors, Risk Factors, Hypothyroidism complications
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Accumulation of epicardial adipose tissue (EAT) and Subclinical hypothyroidism (SH) are associated with increased cardio-metabolic risk. The objective of this study was to quantitatively compare EAT thickening between patients with SH and healthy controls. Therefore, after searching the PubMed/MEDLINE, Embase, Science Direct, Scopus, Google Scholar, and Cochrane databases; we analyzed a group of observational studies who compare the EAT changes between SH vs control groups. A total of 9 studies were included in the final analysis, for a total of 424 patients with SH and 330 controls. Random or fixed effects models were used. Pooled analysis revealed that HS increased EAT (MD: 1.0 mm [0.40; 1.50]; P < 0.01). This meta-analysis suggests that the amount of EAT is significantly increased in SH patients. EAT might be a marker of cardiovascular risk in patients with SH., (Copyright © 2023 Elsevier Inc. All rights reserved.)
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- 2023
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14. Population Status of Vitamin B12 Values in the General Population and in Individuals with Type 2 Diabetes, in Southwestern Colombia.
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Vargas-Uricoechea H, Nogueira JP, Pinzón-Fernández MV, Agredo-Delgado V, and Vargas-Sierra HD
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- Humans, Middle Aged, Vitamin B 12 therapeutic use, Hypoglycemic Agents therapeutic use, Colombia epidemiology, Diabetes Mellitus, Type 2 complications, Diabetes Mellitus, Type 2 epidemiology, Diabetes Mellitus, Type 2 drug therapy, Vitamin B 12 Deficiency epidemiology, Vitamin B 12 Deficiency drug therapy, Metformin therapeutic use
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Vitamin B12 (B12) is necessary for the proper functioning of the central and peripheral nervous systems. Although there is no exact definition for B12 levels, a value of 200 pg/mL is compatible with deficiency, 200-299 pg/mL is considered borderline, and 300 pg/mL is considered normal. In population studies, the prevalence of B12 deficiency ranges between 2.9% and 35%. Furthermore, many medications, such as metformin [for type 2 diabetes mellitus (T2DM)], can cause B12 deficiency. The objectives of this study were to determine the population status of B12 in southwestern Colombia (and the status of B12 in subjects with T2DM). In the total population (participants with and without T2DM), the prevalence of B12 deficiency was 17.8%; that of borderline was 19.3%; and that of normal levels was 62.9%. The prevalence of deficiency increased with age and was significantly higher in those aged ≥60 years ( p = 0.000). In T2DM subjects, the prevalence of deficiency was significantly higher concerning those without T2DM ( p = 0.002) and was significantly higher in those who received >1 gm/day of metformin ( p = 0.001). Thus, the prevalence of deficiency and borderline levels of B12 in our population was high, particularly in those >60 years of age. B12 deficiency was significantly higher in individuals with T2DM than in individuals without T2DM, especially among those receiving high doses of metformin.
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- 2023
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15. Fixed-ratio Combinations (basal Insulin Plus GLP-1RA) In Type 2 Diabetes. an Analytical Review Of Pivotal Clinical Trials.
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Vargas-Uricoechea H, Frias JP, and Vargas-Sierra HD
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- Humans, Glucagon-Like Peptide-1 Receptor therapeutic use, Drug Combinations, Hypoglycemic Agents adverse effects, Insulin, Liraglutide therapeutic use, Liraglutide adverse effects, Blood Glucose, Glucagon-Like Peptide-1 Receptor Agonists, Diabetes Mellitus, Type 2 drug therapy
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In type 2 diabetes, therapeutic failure to the oral anti diabetics is frequent, the use of schemes with basal insulin or with multiple doses of insulin (basal insulin and short-acting insulins) are a widely accepted way to intensify therapy. The use of GLP-1 receptor agonists is another intensification strategy. The fixedratio combinations with molecules such as insulin degludec + liraglutide, and insulin glargine + lixisenatide have proven useful in intensifying treatment of individuals with type 2 diabetes. The purpose of this review was to evaluate and analyze the results of pivotal studies with both fixed-ratio combinations in individuals with type 2 diabetes, finding that, they are capable of achieving better glycemic control when compared with each of its components separately (with a lower risk of hypoglycemia vs basal insulin and lower risk of gastrointestinal adverse effects vs GLP-1 receptor agonists) in various clinical scenarios, especially in individuals who do not achieve control with oral antidiabetics or who do not achieve control with basal insulin (associated with oral antidiabetics) or in those under management with GLP-1RA plus oral antidiabetics.
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- 2023
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16. Molecular Mechanisms in Autoimmune Thyroid Disease.
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Vargas-Uricoechea H
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- Humans, Autoantibodies, Hashimoto Disease genetics, Hashimoto Disease pathology, Graves Disease, Autoimmune Diseases complications, Thyroid Diseases genetics
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The most common cause of acquired thyroid dysfunction is autoimmune thyroid disease, which is an organ-specific autoimmune disease with two presentation phenotypes: hyperthyroidism (Graves-Basedow disease) and hypothyroidism (Hashimoto's thyroiditis). Hashimoto's thyroiditis is distinguished by the presence of autoantibodies against thyroid peroxidase and thyroglobulin. Meanwhile, autoantibodies against the TSH receptor have been found in Graves-Basedow disease. Numerous susceptibility genes, as well as epigenetic and environmental factors, contribute to the pathogenesis of both diseases. This review summarizes the most common genetic, epigenetic, and environmental mechanisms involved in autoimmune thyroid disease.
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- 2023
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17. Real-world effectiveness and safety of insulin glargine 300 U/ml in insulin-naïve people with type 2 diabetes in the Latin America region: A subgroup analysis of the ATOS.
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Vargas-Uricoechea H, Burga Nuñez JL, Rosas Guzmán J, Silva-Gomez L, Beltran S, and Sañudo-Maury ME
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- Humans, Adolescent, Adult, Middle Aged, Aged, Insulin Glargine adverse effects, Prospective Studies, Body Weight, Insulin, Diabetes Mellitus, Type 2 drug therapy
- Abstract
Aim: To evaluate the real-world effectiveness and safety of insulin glargine 300 U/ml (Gla-300) in achieving glycaemic goals in insulin-naïve people with type 2 diabetes (T2D) in Mexico, Colombia and Peru (Latin America region) in the A Toujeo Observational Study (ATOS)., Materials and Methods: ATOS was a multicentre, prospective, 12-month observational study, which included 4422 insulin-naïve adults (age ≥ 18 years) with T2D uncontrolled (HbA1c > 7% and ≤11%) on at least one oral antidiabetic drug (OAD) who initiated Gla-300 treatment as per routine practice. The primary endpoint was the percentage of participants achieving their predefined individualized HbA1c goal at month 6. Key secondary endpoints included change from baseline in HbA1c, fasting plasma glucose (FPG), fasting self-monitored blood glucose (SMBG), body weight and incidence of hypoglycaemia., Results: In this subgroup analysis, a total of 314 participants with T2D received Gla-300. At baseline, mean ± SD age was 56.0 ± 11.6 years, duration of diabetes was 9.7 ± 6.6 years and 65.9% of participants were on at least two OADs. The individualized HbA1c target was achieved by 25.8% of participants (95% confidence interval [CI]: 20.3-31.9) at month 6 and by 35.3% (95% CI: 28.5-42.5) at month 12. Gla-300 treatment improved glycaemic control with meaningful reductions in mean HbA1c, FPG and fasting SMBG. The incidence of hypoglycaemia reported was low and body weight remained stable., Conclusions: In a real-world setting in the Latin America region, the initiation of Gla-300 in people with T2D uncontrolled on OADs resulted in improved glycaemic control with a low incidence of hypoglycaemia and no change in body weight., (© 2022 Sanofi Group and The Authors. Diabetes, Obesity and Metabolism published by John Wiley & Sons Ltd.)
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- 2023
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18. Prevalence of Functional Alterations and the Effects of Thyroid Autoimmunity on the Levels of TSH in an Urban Population of Colombia: A Population-Based Study.
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Vargas-Uricoechea H, Agredo-Delgado V, Vargas-Sierra HD, and Pinzón-Fernández MV
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- Male, Humans, Female, Aged, Urban Population, Prevalence, Cross-Sectional Studies, Colombia epidemiology, Thyrotropin, Autoimmunity, Autoantibodies
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Background: The population prevalence of functional alterations and thyroid autoimmunity is high, and numerous genetic and environmental aspects have been described as triggering factors., Objectives: The objective of this study was to determine the prevalence of functional alterations and thyroid autoimmunity in an urban population of Colombia., Materials and Methods: It is a cross-sectional, population-based study (n = 9,638) conducted on an urban population of Popayán-Cauca-Colombia between February 5th, 2018, to December 11th, 2021. The variables evaluated were thyrotropin (TSH), free T4 (FT4), and anti-thyroid antibodies (thyroid peroxidase antibodies: TPOAb, and thyroglobulin antibodies: TgAb)., Results: TSH in men was significantly higher than in women. No differences were observed in the values of FT4, TPOAb, and TgAb (according to sex). The prevalence of normal thyroid function and subclinical hypothyroidism was significantly higher in men. The positivity of TPOAb and TgAb was 22.3% and 19.2%, respectively. TSH levels increased with age (both in men and in women). In participants with normal FT4 and negative TPOAb, the TSH was significantly higher. TSH was significantly higher in TPOAb-positive individuals and among those with TPOAb and TgAb positives, as well as in women with positive TPOAb and men with positive TPOAb and TgAb., Conclusion: In an urban population of Colombia, TSH was found to be higher than in populations of other geographical areas, especially in older individuals and in the presence of positive anti-thyroid antibodies, a high prevalence of functional alterations and thyroid autoimmunity was also found. These findings can be explained by excess iodine consumption and some environmental factors., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.net.)
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- 2023
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19. Population status of selenium in Colombia and associated factors: a cross-sectional study.
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Vargas-Uricoechea H, Bastidas B, and Pinzón MV
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- Humans, Adult, Colombia, Cross-Sectional Studies, Micronutrients blood, Micronutrients deficiency, Middle Aged, Goiter epidemiology, Thyrotropin blood, Antibodies blood, Plants chemistry, Prevalence, Selenium analysis, Selenium blood, Selenium deficiency
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Objectives: This study aims to investigate the population status of selenium in Colombia and other associated factors., Methods: Cross-sectional study, in population of urban or rural origin (n=412). Main outcome measures were: median serum selenium, thyrotropin, the prevalence of and positivity of anti-thyroid peroxidase, anti-thyroglobulin, and anti-TSH receptor., Results: This study found that 96.6% of the subjects had normal selenium levels, and no significant associations were found between the population median of selenium and overweight/obesity, sociodemographic variables, age, goiter, and thyroid antibody positivity., Conclusions: In Colombia, the population status of selenium is normal, and the geological characteristics may contribute to the state of selenium in this population. However, additional studies are required to evaluate the content of selenium in plants and other foods., (© 2022 Walter de Gruyter GmbH, Berlin/Boston.)
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- 2022
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20. Real-World Effectiveness and Safety of Insulin Glargine 300 U/mL in Insulin-Naïve People with Type 2 Diabetes: the ATOS Study.
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Galstyan GR, Tirosh A, Vargas-Uricoechea H, Mabunay MA, Coudert M, Naqvi M, Pilorget V, and Khan N
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Introduction: The clinical benefits of insulin glargine 300 U/mL (Gla-300) have been confirmed in randomised clinical trials (EDITION programme and BRIGHT) and real-world studies in the USA and Western Europe. ATOS evaluated the real-world effectiveness and safety of Gla-300 in wider geographic regions (Asia, the Middle East, North Africa, Latin America and Eastern Europe)., Methods: This prospective observational, international study enrolled adults (≥ 18 years) with type 2 diabetes mellitus (T2DM) uncontrolled [haemoglobin A1c (HbA1c) > 7% to ≤ 11%] on one or more oral anti-hyperglycaemic drugs (OADs) who had been advised by their treating physician to add Gla-300 to their existing treatment. The primary endpoint was achievement of a pre-defined individualised HbA1c target at month 6., Results: Of the 4550 participants included, 4422 (51.8% female) were eligible for assessment. The mean ± standard deviation (SD) age was 57.2 ± 10.8 years, duration of diabetes was 10.2 ± 6.2 years and baseline HbA1c was 9.28 ± 1.0%. The proportion of participants reaching their individualised glycaemic target was 25.2% [95% confidence interval (CI) 23.8-26.6%] at month 6 and 44.5% (95% CI 42.9-46.1%) at month 12. At months 6 and 12, reductions were observed in HbA1c (-1.50% and -1.87%) and fasting plasma glucose (-3.42 and -3.94 mmol/L). Hypoglycaemia incidence was low, and body weight change was minimal. Adverse events were reported in 283 (6.4%) participants, with 57 (1.3%) experiencing serious adverse events., Conclusion: In a real-world setting, initiation of Gla-300 in people with T2DM uncontrolled on OADs resulted in improved glycaemic control and low rates of hypoglycaemia with minimal weight change., Trial Registration: Clinicaltrials.gov number NCT03703869., (© 2022. The Author(s).)
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- 2022
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21. Population Status of Iodine and Its Potential Effects on Thyroid Function and Autoimmunity in Southwestern Colombia.
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Vargas-Uricoechea H, Mera-Mamian A, Bastidas-Sanchez B, Pinzon-Fernandez M, Murillo-Palacios J, and Ramirez-Bejarano L
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Background: This study aimed to investigate the iodine status and its potential effects on thyroid function and autoimmunity in Colombia., Methods: This was a cross-sectional study, in population of urban and rural areas, from four geographic regions in the Department of Cauca, Colombia; the participants were 412 healthy adults, a third from rural areas. The following variables were evaluated: median urinary iodine concentration (mUIC), serum thyrotropin (TSH), clinical and ultrasonographic (US) goiter assessment, and anti-thyroid peroxidase (anti-TPO), anti-thyroglobulin (anti-Tg) and anti-TSH receptor (TRAb) concentrations., Results: The mUIC levels were 153.9 µg/L (interquartile range (IQR): 220.06); 30% had "excessive" mUIC and a quarter had "low" mUIC. The positivity of anti-Tg and anti-TPO was higher in subjects > 60 years (P = 0.017 and P ≤ 0.001, respectively). A high prevalence of "low" mUIC was found in the "low" socioeconomic status (SES) and of "more than adequate or excessive" in the "high" SES when compared with the "medium" SES (P ≤ 0.001). The prevalence of goiter by physical examination was 41.7% and 34% by US. The highest mUIC levels were significantly more prevalent in women, in subjects with elevated TSH and in those from rural areas., Conclusions: The population status of iodine in Colombia is U-shaped; the high prevalence of goiter, hypothyroidism, and thyroid autoimmunity can be explained by excess or deficit of iodine and by probable environmental goitrogens., Competing Interests: The authors have nothing to disclose., (Copyright 2022, Vargas-Uricoechea et al.)
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- 2022
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22. Current State and Principles of Basal Insulin Therapy in Type 2 Diabetes.
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Vargas-Uricoechea H
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Treatment with basal insulins is a fundamental part of management in many patients with type 2 diabetes mellitus. Multiple management schemes may be indicated in these individuals, for example, the use of oral antihyperglycemic agents with basal insulins (basal-supported oral therapy) or the combinations of basal insulins with glucagon-like peptide-1 receptor agonists; each of these strategies makes it easier to achieve glycemic control goals. A basic knowledge of the physiology, pharmacodynamic and pharmacokinetic aspects of the different basal insulins is essential to achieve treatment goals and compliance. This review addresses the principles of management with basal insulins., Competing Interests: Hernando Vargas-Uricoechea has received honoraria from Sanofi and Novo Nordisk as speaker and on advisory boards., (Copyright 2022, Vargas-Uricoechea.)
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- 2022
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23. Comparative efficacy and safety of basal insulins: A review.
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Vargas-Uricoechea H and Aschner P
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- Diabetes Mellitus, Type 2 blood, Humans, Randomized Controlled Trials as Topic methods, Treatment Outcome, Diabetes Mellitus, Type 2 drug therapy, Hypoglycemic Agents therapeutic use, Insulin Detemir therapeutic use, Insulin Glargine therapeutic use, Insulin, Long-Acting therapeutic use
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Background and Aim: To provide an update on the usefulness of basal insulin in patients with type 2 diabetes mellitus., Methods: We conducted a literature search using PubMed and MEDLINE, BIOSIS, Scopus, EMBASE, ClinicalTrials.gov, Google Scholar, and Springer Online Archives Collection until June 2021., Results: All basal insulins are similar in efficacy, with only small differences among them in terms of the risk of hypoglycemia., Conclusions: For type 2 diabetes mellitus, all basal insulins have a similar efficacy, with some advantage of Glar-300 and Deg-100 in reducing the risk of hypoglycemia compared to Glar-100., (Copyright © 2021 Diabetes India. Published by Elsevier Ltd. All rights reserved.)
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- 2021
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24. Challenges in familial chylomicronemia syndrome diagnosis and management across Latin American countries: An expert panel discussion.
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Santos RD, Lorenzatti A, Corral P, Nogueira JP, Cafferata AM, Aimone D, Lourenço CM, Izar MC, Lima JG, Lottenberg AM, Alonso R, Garay K, Morales AR, Vargas-Uricoechea H, Peña CAC, and Roman-González A
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- Chylomicrons blood, Diabetes Mellitus etiology, Female, Glycosylphosphatidylinositols metabolism, Humans, Hyperlipoproteinemia Type I blood, Hyperlipoproteinemia Type I etiology, Latin America, Lipoprotein Lipase genetics, Loss of Function Mutation, Male, Pancreatitis etiology, RNA-Binding Proteins genetics, RNA-Binding Proteins metabolism, Triglycerides blood, Hyperlipoproteinemia Type I diagnosis, Hyperlipoproteinemia Type I therapy
- Abstract
Familial chylomicronemia syndrome (FCS) is a rare genetic disorder characterized by extremely high triglyceride levels due to impaired clearance of chylomicrons from plasma. This paper is the result of a panel discussion with Latin American specialists who raised the main issues on diagnosis and management of FCS in their countries. Overall FCS is diagnosed late on the course of the disease, is characterized by heterogeneity on the occurrence of pancreatitis, and remains a long time in care of different specialists until reaching a lipidologist. Pancreatitis and secondary diabetes are frequently seen, often due to late diagnosis and inadequate care. Molecular diagnosis is unusual; however, loss of function variants on the lipoprotein lipase gene are apparently the most frequent etiology. A founder effect of the glycosylphosphatidylinositol anchored high density lipoprotein binding protein 1 gene has been described in the northeast of Brazil. Low awareness of the disease amongst health professionals contributes to inadequate care and an inadequate patient journey., (Copyright © 2021 National Lipid Association. Published by Elsevier Inc. All rights reserved.)
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- 2021
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25. Dyslipidaemias and their treatment in high complexity centres in Colombia.
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Ruiz ÁJ, Vargas-Uricoechea H, Urina-Triana M, Román-González A, Isaza D, Etayo E, Quintero A, Molina DI, Toro JM, Parra G, Merchán A, Cadena A, Yupanqui Lozano H, Cárdenas JM, Quintero ÁM, Botero R, Jaramillo M, Arteaga JM, Vesga-Angarita B, Valenzuela-Plata E, and Betancur-Valencia M
- Subjects
- Aged, Aged, 80 and over, Cholesterol, LDL blood, Colombia epidemiology, Cross-Sectional Studies, Dyslipidemias epidemiology, Dyslipidemias physiopathology, Female, Humans, Hydroxymethylglutaryl-CoA Reductase Inhibitors adverse effects, Hypolipidemic Agents adverse effects, Male, Middle Aged, Retrospective Studies, Dyslipidemias drug therapy, Hydroxymethylglutaryl-CoA Reductase Inhibitors administration & dosage, Hypolipidemic Agents administration & dosage
- Abstract
Background and Objective: Data is scarce on the distribution of different types of dyslipidaemia in Colombia. The primary objective was to describe the frequency of dyslipidaemias. The secondary objectives were: frequency of cardiovascular comorbidity, statins and other lipid-lowering drugs use, frequency of statins intolerance, percentage of patients achieving c-LDL goals, and distribution of cardiovascular risk (CVR)., Materials and Methods: Cross-sectional study with retrospective data collection from 461 patients diagnosed with dyslipidaemia and treated in 17 highly specialised centres distributed into six geographic and economic regions of Colombia., Results: Mean (SD) age was 66.4 (±12.3) years and 53.4% (246) were women. Dyslipidaemias were distributed as follows in order of frequency: mixed dyslipidaemia (51.4%), hypercholesterolaemia (41.0%), hypertriglyceridaemia (5.4%), familial hypercholesterolaemia (3.3%), and low c-HDL (0.7%). The most prescribed drugs were atorvastatin (75.7%) followed by rosuvastatin (24.9%). As for lipid control, 55% of all patients, and 28.6% of those with coronary heart disease, did not achieve their personal c-LDL goal despite treatment. The frequency of statin intolerance was 2.6% in this study., Conclusions: Mixed dyslipidaemia and hypercholesterolaemia are the most frequent dyslipidaemias in Colombia. A notable percentage of patients under treatment with lipid-lowering drugs, including those with coronary heart disease, did not achieve specific c-LDL goals. This poor lipid control may worsen patient's CVR, so that therapeutic strategies need to be changed, either with statin intensification or addition of new drugs in patients with higher CVR., (Copyright © 2020 Sociedad Española de Arteriosclerosis. Publicado por Elsevier España, S.L.U. All rights reserved.)
- Published
- 2020
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26. Efficacy and safety of the second generation basal insulin analogs in type 2 diabetes mellitus: A critical appraisal.
- Author
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Vargas-Uricoechea H and Frias JP
- Subjects
- Humans, Prognosis, Safety, Diabetes Mellitus, Type 2 drug therapy, Hypoglycemic Agents therapeutic use, Insulin analogs & derivatives
- Published
- 2019
- Full Text
- View/download PDF
27. Iodine Status in the Colombian Population and the Impact of Universal Salt Iodization: A Double-Edged Sword?
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Vargas-Uricoechea H, Pinzón-Fernández MV, Bastidas-Sánchez BE, Jojoa-Tobar E, Ramírez-Bejarano LE, and Murillo-Palacios J
- Abstract
Iodine deficiency and iodine excess have severe consequences on human health and have been associated with the presence of goiter, hypothyroidism, hyperthyroidism, thyroid cancer, thyroid nodules and thyroid autoimmunity, poor mental health, and impaired intellectual development. Universal salt iodization programs have been considered one of the most cost-effective interventions for the prevention of iodine deficiency-associated disorders, as evidenced over time since the implementation of such programs. However, these efforts have also led to an excessive consumption of iodine in certain geographical regions, due to salt overuse. Consequently, the amount of iodine derived from salt intake exceeds the established limits required for achieving the right balance between salt consumption and health benefits and leads to undesirable health effects. In Colombia, the recommendations and standards for the production and commercialization of iodized salt are fully complied with. Nevertheless, there is a remarkable rate of iodine excess among the country's population, which, at least hypothetically, represents a higher risk for developing functional and structural disorders of the thyroid gland. This review analyzes universal salt iodization programs worldwide, particularly their impact on the thyroid gland and the results of the studies conducted in Colombia following the implementation of such strategy.
- Published
- 2019
- Full Text
- View/download PDF
28. Blood pressure control and impact on cardiovascular events in patients with type 2 diabetes mellitus: A critical analysis of the literature.
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Vargas-Uricoechea H and Cáceres-Acosta MF
- Subjects
- Antihypertensive Agents therapeutic use, Blood Pressure, Cardiovascular Diseases etiology, Diabetes Mellitus, Type 2 therapy, Exercise Therapy methods, Humans, Hypertension therapy, Practice Guidelines as Topic, Risk Factors, Cardiovascular Diseases prevention & control, Diabetes Mellitus, Type 2 complications, Hypertension complications
- Abstract
High blood pressure in individuals with type2 diabetes mellitus increases the risk of cardiovascular events. The international management guidelines recommend starting pharmacological treatment with blood pressure values >140/90mmHg. However, there is no optimal cut-off point from which cardiovascular events can be reduced without causing adverse events. A blood pressure range of >130/80 to <140/90mmHg seems to be adequate. These values can be achieved through non-pharmacological (diet, exercise) and pharmacological interventions (using drugs that have been shown to reduce cardiovascular events). The choice of one or several drugs must be individualised, according to factors including, ethnicity, age, and associated comorbidities, among others., (Copyright © 2018 Sociedad Española de Arteriosclerosis. Publicado por Elsevier España, S.L.U. All rights reserved.)
- Published
- 2019
- Full Text
- View/download PDF
29. Efficacy and Safety of Insulin Glargine 300 U/mL versus 100 U/mL in Diabetes Mellitus: A Comprehensive Review of the Literature.
- Author
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Vargas-Uricoechea H
- Subjects
- Blood Glucose drug effects, Diabetes Mellitus blood, Dose-Response Relationship, Drug, Humans, Hypoglycemic Agents administration & dosage, Hypoglycemic Agents adverse effects, Insulin Glargine administration & dosage, Insulin Glargine adverse effects, Treatment Outcome, Diabetes Mellitus drug therapy, Hypoglycemic Agents therapeutic use, Insulin Glargine therapeutic use
- Abstract
To achieve good metabolic control in diabetes and maintain it in the long term, a combination of changes in lifestyle and pharmacological treatment is necessary. The need for insulin depends upon the balance between insulin secretion and insulin resistance. Insulin is considered the most effective glucose-lowering therapy available and is required by people with type 1 diabetes mellitus to control their blood glucose levels; yet, many people with type 2 diabetes mellitus will also eventually require insulin therapy, due to the progressive nature of the disease. A variety of long-acting insulins is currently used for basal insulin therapy (such as insulin glargine, degludec, and detemir), each having sufficient pharmacodynamic and pharmacokinetic profiles to afford lower intrapatient variability and an extended duration of action. The new glargine-300 formulation was developed to have a flatter and more extended time-action profile than the original glargine-100, and these characteristics may translate into more stable and sustained glycemic control over a 24 h dosing interval. The objective of this comprehensive review was to summarize the available evidence on the clinical efficacy and safety of glargine-300 versus glargine-100 from the EDITION clinical trial program, in patients with type 1 and type 2 diabetes mellitus.
- Published
- 2018
- Full Text
- View/download PDF
30. Concordance between the TIRADS ultrasound criteria and the BETHESDA cytology criteria on the nontoxic thyroid nodule.
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Vargas-Uricoechea H, Meza-Cabrera I, and Herrera-Chaparro J
- Abstract
Background: Thyroid nodule is a common disorder of the thyroid. Despite their benign nature, they can be associated with multiple pathologic conditions, including thyroid cancer., Methods: This cross-sectional study determined the concordance of Ultrasound (TIRADS criteria) and Fine Needle Aspiration Biopsy (FNA-BETHESDA system) in the assessment of the nontoxic thyroid nodule. A total of 180 subjects 18 years old or older underwent the two diagnostic tests and their results were compared using kappa index., Results: Participants were mostly women, with average age of 57 years. The frequency of BETHESDA II was 65/180 versus 45/180 in TIRADS 2. In contrast, the highest frequency in category 4-IV was 62/180 for TIRADS 4 versus 41/180 for BETHESDA IV. The highest concordance was found among the category 2-II classification. The observed agreement was 87.2% with a linear weighted kappa of 0.69 (95% CI: 0.59-0.79). The heterogeneity analysis showed a trend towards a higher weighted kappa value in nodules ≥4 cm in males and individuals aged ≥50 years, with accelerated nodular growth, binding to adjacent structures, vocal folds paralysis, urban origin, and a history of head and neck radiation therapy., Conclusions: The TIRADS criteria has a good concordance with the Bethesda system. The ultrasound findings of benign pathology are aligned with the cytology results. The correct interpretation of the two findings helps the clinician to reduce the risk of unnecessary invasive procedures in patients with a low probability of presenting thyroid cancer, while facilitating the identification of patients at higher risk of cancer.
- Published
- 2017
- Full Text
- View/download PDF
31. Thyroid Dysfunction and Heart Failure: Mechanisms and Associations.
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Vargas-Uricoechea H and Bonelo-Perdomo A
- Subjects
- Cardiovascular Diseases prevention & control, Heart Failure physiopathology, Heart Failure therapy, Humans, Hypothyroidism complications, Risk Factors, Thyroid Diseases therapy, Thyroid Hormones blood, Heart Failure complications, Thyroid Diseases complications
- Abstract
Purpose of Review: The purpose of this review is to provide an update on the current knowledge of the pathophysiology, the mechanisms, and the cardiovascular impact of the different stages of thyroid dysfunction (TD) in heart failure (HF) patients., Recent Finding: The influence of thyroid hormones (THs) on the cardiovascular system involves the regulation of key processes related to maintenance of cardiac function; however, there are no long-term studies available showing that intervening the TD changes the incidence or the prognosis in HF individuals. Future research shall focus on the effects of cardiovascular morbidity and mortality associated with different treatment modalities for hyper and hypothyroidism. TD has been associated with different clinical results in HF individuals; treatment with THs in patients with hypothyroidism improves cardiovascular risk factors, but the effect on cardiovascular events has not been assessed in randomized, controlled trials.
- Published
- 2017
- Full Text
- View/download PDF
32. Postprandial Glucagon Reductions Correlate to Reductions in Postprandial Glucose and Glycated Hemoglobin with Lixisenatide Treatment in Type 2 Diabetes Mellitus: A Post Hoc Analysis.
- Author
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Ahrén B, Galstyan G, Gautier JF, Giorgino F, Gomez-Peralta F, Krebs M, Nikonova E, Stager W, and Vargas-Uricoechea H
- Abstract
Introduction: The extent to which postprandial glucagon reductions contribute to lowering of postprandial glucose in patients with type 2 diabetes mellitus (T2DM) is currently unknown. The aim of this analysis was to determine whether a reduction in postprandial glucagon following treatment with the glucagon-like peptide-1 receptor agonist lixisenatide correlates with a reduction in postprandial glucose and glycated hemoglobin (HbA1c) in patients with T2DM., Methods: A post hoc analysis was performed on pooled data from the modified intent-to-treat populations of two lixisenatide Phase 3 trials: GetGoal-M (lixisenatide versus placebo as add-on to metformin) and GetGoal-S (lixisenatide versus placebo as add-on to sulfonylurea [SU] ± metformin). Glucagon levels were assessed 2 h after a standardized meal test performed at baseline and Week 24 and were examined for correlation with changes in 2-h postprandial glucose and HbA1c., Results: Lixisenatide reduced 2-h postprandial glucagon at Week 24 compared with placebo (P < 0.00001). The mean change in postprandial glucagon significantly correlated with reductions in postprandial glucose (P < 0.00001) and HbA1c (P < 0.00001)., Conclusion: A reduction in postprandial glucagon following lixisenatide administration correlated with a decrease in postprandial glucose and HbA1c in patients with T2DM insufficiently controlled on metformin and/or SU. This suggests that lowering of postprandial glucagon contributes to the overall glycemic improvement observed with lixisenatide., Funding: Sanofi., Clinical Trial Numbers: NCT00712673 (GetGoal-M) and NCT00713830 (GetGoal-S).
- Published
- 2016
- Full Text
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33. [Epidemiology of diabetes mellitus in South America: The experience of Colombia].
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Vargas-Uricoechea H and Casas-Figueroa LÁ
- Subjects
- Adult, Aged, Colombia epidemiology, Female, Humans, Male, Middle Aged, Prevalence, Sex Distribution, South America epidemiology, Young Adult, Diabetes Mellitus epidemiology, Diabetes Mellitus, Type 2 epidemiology, Hyperglycemia epidemiology
- Abstract
According to the International Diabetes Federation, 8.3% of the world population suffers from diabetes mellitus, and it is expected that the number of individuals with the disease will increase to over 592 million. In South and Central America, it is estimated that the increase in the number of cases diagnosed in the period from 2013 to 2035 will be 59.8% (from 24 to 38.5 millions). According to the World Health Organisation, the prevalence of fasting hyperglycaemia in the region of the Americas in 2014 was 9.3% in men and 8.1% in women. The countries with the highest prevalence of diabetes mellitus in adults ≥18years were: Guyana, Surinam, Chile, and Argentina. In Colombia, the prevalence of type 2 diabetes mellitus is variable, depending on the population range assessed and the diagnostic criteria used., (Copyright © 2016 Sociedad Española de Arteriosclerosis. Publicado por Elsevier España, S.L.U. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
34. An Epidemiologic Analysis of Diabetes in Colombia.
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Vargas-Uricoechea H and Casas-Figueroa LÁ
- Subjects
- Adult, Aged, Colombia epidemiology, Female, Humans, Male, Middle Aged, Population Dynamics, Prevalence, Rural Population, Sex Distribution, Urban Population, Young Adult, Diabetes Mellitus, Type 2 epidemiology, Hyperglycemia epidemiology
- Abstract
Background: The burden of diabetes is a global problem, wherein the significant growth of diabetes in Colombia reflects a complex pathophysiology and epidemiology found in many other South American nations., Objectives: The aim of this study was to analyze epidemiologic data from Colombia and the South American region in general to identify certain disease drivers and target them for intervention to curb the increasing prevalence of diabetes., Methods: A detailed search was conducted using MEDLINE, SciELO, HINARI, LILACS, IMBIOMED, and Latindex databases, in addition to clinical practice guidelines, books, manuals, and other files containing relevant and verified information on diabetes in Colombia., Findings: According to the International Diabetes Federation and the World Health Organization, the prevalence of diabetes in Colombia is 7.1% and 8.5%, respectively. In contrast, a national survey in Colombia shows a prevalence ranging from 1.84% to 11.2%, depending on how the diagnosis is made, the criteria used, and the age range studied. The prevalence exclusively in rural areas ranges from 1.4% to 7.9% and in urban areas from 1% to 46%. The estimated mean overall (direct and indirect) cost attributed to type 2 diabetes is 5.7 billion Colombian pesos (US $2.7 million). Diabetes is the fifth leading cause of death in Colombia with a rate of 15 deaths per 100,000 individuals., Conclusions: Based on a clustering of factors, 4 relevant disease drivers emerge that may account for the epidemiology of diabetes in Colombia: demographic transition, nutritional transition, forced displacement/internal migration and urban development, and promotion of physical activity., (Copyright © 2015 The Authors. Published by Elsevier Inc. All rights reserved.)
- Published
- 2015
- Full Text
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35. Effects of thyroid hormones on the heart.
- Author
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Vargas-Uricoechea H, Bonelo-Perdomo A, and Sierra-Torres CH
- Subjects
- Cardiovascular Diseases physiopathology, Cardiovascular System metabolism, Cardiovascular System physiopathology, Humans, Hyperthyroidism etiology, Hypothyroidism etiology, Thyroid Hormones metabolism, Cardiovascular Diseases etiology, Hyperthyroidism complications, Hypothyroidism complications
- Abstract
Thyroid hormones have a significant impact on heart function, mediated by genomic and non-genomic effects. Consequently, thyroid hormone deficiencies, as well as excesses, are expected to result in profound changes in cardiac function regulation and cardiovascular hemodynamics. Thyroid hormones upregulate the expression of the sarcoplasmic reticulum calcium-activated ATPase and downregulate the expression of phospholamban. Overall, hyperthyroidism is characterized by an increase in resting heart rate, blood volume, stroke volume, myocardial contractility, and ejection fraction. The development of "high-output heart failure" in hyperthyroidism may be due to "tachycardia-mediated cardiomyopathy". On the other hand, in a hypothyroid state, thyroid hormone deficiency results in lower heart rate and weakening of myocardial contraction and relaxation, with prolonged systolic and early diastolic times. Cardiac preload is decreased due to impaired diastolic function. Cardiac afterload is increased, and chronotropic and inotropic functions are reduced. Subclinical thyroid dysfunction is relatively common in patients over 65 years of age. In general, subclinical hypothyroidism increases the risk of coronary heart disease (CHD) mortality and CHD events, but not of total mortality. The risk of CHD mortality and atrial fibrillation (but not other outcomes) in subclinical hyperthyroidism is higher among patients with very low levels of thyrotropin. Finally, medications such as amiodarone may induce hypothyroidism (mediated by the Wolff-Chaikoff), as well as hyperthyroidism (mediated by the Jod-Basedow effect). In both instances, the underlying cause is the high concentration of iodine in this medication., (Copyright © 2014 Sociedad Española de Arteriosclerosis. Published by Elsevier España. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
36. Thyroid hormones and the heart.
- Author
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Vargas-Uricoechea H and Sierra-Torres CH
- Subjects
- Atrial Fibrillation metabolism, Atrial Fibrillation physiopathology, Cardiovascular Diseases mortality, Cardiovascular Diseases physiopathology, Heart Failure metabolism, Heart Failure physiopathology, Humans, Hyperthyroidism complications, Hyperthyroidism metabolism, Hyperthyroidism physiopathology, Hypothyroidism metabolism, Hypothyroidism physiopathology, Risk Factors, Cardiovascular Diseases metabolism, Thyroid Hormones metabolism
- Abstract
Thyroid hormones have a significant impact on heart function, mediated by genomic and non-genomic effects. Consequently, thyroid hormones deficit as well as excess are expected to result in profound changes in cardiac function regulation and cardiovascular hemodynamics. Thyroid hormones upregulate the expression of the sarcoplasmic reticulum calcium-activated ATPase and downregulate the expression of phospholamban. Overall, hyperthyroidism is characterized by an increase in resting heart rate, blood volume, stroke volume, myocardial contractility, and ejection fraction. The development of "high-output heart failure" in hyperthyroidism may be due to "tachycardia-mediated cardiomyopathy." In contrast, in the hypothyroid state, thyroid hormone deficiency results in lower heart rate and weakening of myocardial contraction and relaxation, with prolonged systolic and early diastolic times. Cardiac preload is decreased owing to impaired diastolic function, cardiac afterload is increased, and chronotropic and inotropic functions are reduced. Subclinical thyroid dysfunction is relatively common in patients >65 years of age. In general, subclinical hypothyroidism increases the risk of cardiovascular heart disease (CHD) mortality and CHD events, but not of total mortality. The risk of CHD mortality and atrial fibrillation (but not other outcomes) in subclinical hyperthyroidism is higher among patients with very low levels of thyrotropin. Finally, medications such as amiodarone may induce hypothyroidism (mediated by the Wolff-Chaikoff effect) as well as hyperthyroidism (mediated by the Jod-Basedow effect). In both instances, the underlying cause is the high concentration of iodine in this medication. The purpose of this review is to assess the effects of thyroid hormones on the heart, and their clinical repercussions.
- Published
- 2014
- Full Text
- View/download PDF
37. Ectopic thyroid tissue in the adrenal gland: a report of two cases with pathogenetic implications.
- Author
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Romero-Rojas A, Bella-Cueto MR, Meza-Cabrera IA, Cabezuelo-Hernández A, García-Rojo D, Vargas-Uricoechea H, and Cameselle-Teijeiro J
- Subjects
- Adrenal Gland Diseases surgery, Adult, Choristoma surgery, Female, Humans, Middle Aged, Adrenal Gland Diseases pathology, Choristoma pathology, Thyroid Gland
- Abstract
Background: Ectopic thyroid tissue is usually found anywhere along the embryonic descent pathway of the medial thyroid anlage from the tongue to the trachea (Wölfler area). However, ectopic thyroid tissue in the adrenal gland (ETTAG) is not easy to understand on the basis of thyroid embryology; because it is so rare, the possibility of metastasis should first be considered. Here, we describe two cases of ETTAG with pathogenetic implications and review the associated literature., Patient Findings: Two cases of ETTAG presented as incidental cystic adrenal masses in adult females, one having a congenital hernia of Morgagni. The ETTAG was histologically indistinguishable from normal orthotopic thyroid tissue, and its follicular nature was confirmed by immunohistochemical positivity for thyroglobulin, thyroperoxidase, thyroid transcription factor-1 (TTF-1/Titf-1/Nkx2.1), cytokeratin AE1/AE3, cytokeratin 7, pendrin, human sodium iodide symporter, paired box gene 8, and forkhead box E1 (TTF-2), as well as positivity for the messenger RNA of the thyroglobulin gene by in situ hybridization analysis. No C cells (negativity for calcitonin, chromogranin, and synaptophysin) were present. Neither BRAF nor KRAS mutations were detected with real-time polymerase chain reaction analysis. Further work-up did not show evidence of thyroid malignancy., Summary: ETTAG is a rare finding, with only seven cases reported; women are much more frequently affected than men (8:1), and it usually presents in the fifth decade (mean age 54, range 38-67) as a cystic adrenal mass incidentally discovered on abdominal ultrasonography and/or in computed tomography images. ETTAG is composed of normal follicular cells without C cells. The expression of some transcription factors (TTF-1, paired box gene 8, and FOXE1) involved in development and/or migration of the medial thyroid anlage is preserved. Coexistence of a congenital hernia of Morgagni in one patient suggests an overdescent of medial thyroid anlage-derived cells in its pathogenesis., Conclusion: Although ETTAG pathogenesis remains unknown, the lack of C cells together with the coexistence of a congenital defect of the anterior diaphragm (hernia of Morgagni) in one of our patients could suggest an overdescent of medial thyroid anlage-derived cells in the origin of this heterotopia.
- Published
- 2013
- Full Text
- View/download PDF
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