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1.
Biomed Pharmacother ; 171: 116104, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-38198956

RESUMO

Despite the abundance of registered clinical trials worldwide, the availability of effective drugs for obesity treatment is limited due to their associated side effects. Thus, there is growing interest in therapies that stimulate energy expenditure in white adipose tissue. Recently, we demonstrated that the delivery of a miR-21 mimic using JetPEI effectively inhibits weight gain in an obese mouse model by promoting metabolism, browning, and thermogenesis, suggesting the potential of miR-21 mimic as a treatment for obesity. Despite these promising results, the implementation of more advanced delivery system techniques for miR-21 mimic would greatly enhance the advancement of safe and efficient treatment approaches for individuals with obesity in the future. Our objective is to explore whether a new delivery system based on gold nanoparticles and Gemini surfactants (Au@16-ph-16) can replicate the favorable effects of the miR-21 mimic on weight gain, browning, and thermogenesis. We found that dosages as low as 0.2 µg miR-21 mimic /animal significantly inhibited weight gain and induced browning and thermogenic parameters. This was evidenced by the upregulation of specific genes and proteins associated with these processes, as well as the biogenesis of beige adipocytes and mitochondria. Significant increases in miR-21 levels were observed in adipose tissue but not in other tissue types. Our data indicates that Au@16-ph-16 could serve as an effective delivery system for miRNA mimics, suggesting its potential suitability for the development of future clinical treatments against obesity.


Assuntos
Nanopartículas Metálicas , MicroRNAs , Obesidade , Animais , Camundongos , Tecido Adiposo Marrom/metabolismo , Metabolismo Energético , Ouro/farmacologia , Concentração de Íons de Hidrogênio , Camundongos Endogâmicos C57BL , MicroRNAs/genética , Obesidade/tratamento farmacológico , Termogênese , Aumento de Peso
2.
Artigo em Inglês | MEDLINE | ID: mdl-38217869

RESUMO

CONTEXT: Metabolic dysfunction-associated steatotic liver disease (MASLD) is characterized by the intracellular lipid accumulation in hepatocytes. Excess caloric intake and high-fat diets are considered to significantly contribute to MASLD development. OBJECTIVE: To evaluate the hepatic and serum fatty acid (FA) composition in patients with different stages of MASLD, and their relationship with FA dietary intake and MASLD-related risk factors. METHODS: This was a case-control study in patients with obesity undergoing bariatric surgery at a University Hospital between January 2020 and December 2021. Participants were distributed in three groups: no MASLD (n = 26), steatotic liver disease (n = 33), and metabolic dysfunction-associated steatohepatitis (n = 32). Hepatic and serum FAs levels were determined by GC-MS. The nutritional status was evaluated using validated food frequency questionnaires. The hepatic expression of genes involved in FA metabolism was analyzed by RT-qPCR. RESULTS: The hepatic, but not serum, FA profiles were significantly altered in patients with MASLD compared to those without MASLD. No differences were observed in FA intake between the groups. Levels of C16:0, C18:1, and the C18:1/C18:0 ratio were higher, while C18:0 levels and C18:0/C16:0 ratio were lower in patients with MASLD being significantly different between the three groups. Hepatic FA levels and ratios correlated with histopathological diagnosis and other MASLD-related parameters. The expression of genes involved in the FA metabolism was upregulated in patients with MASLD. CONCLUSION: Alterations in hepatic FA levels in MASLD patients were due to an enhancement of the de novo lipogenesis in the liver.

4.
Front Endocrinol (Lausanne) ; 14: 1240279, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37955013

RESUMO

Objectives: Semaglutide is a glucagon-like peptide 1 receptor agonist that improves glycemic control and achieves weight loss in type 2 diabetes (T2D) patients. Subcutaneous (s.c.) semaglutide at 1 mg once weekly (OW) is safe in T2D patients with chronic kidney disease (CKD). Whether or not CKD and its severity influence treatment response remains undetermined. Method: This is an observational, ambispective, multicenter, nationwide, real-world study designed to compare safety/efficacy of OW s.c. 1 mg semaglutide in T2D patients with or without CKD. The influence of CKD severity was also addressed. Patients were followed up for 12 months. Primary end-points were glycosylated hemoglobin (HbA1c), weight, and renal outcomes. Secondary end-points included insulin resistance, atherogenic and hepatic steatosis indexes, and changes in antihyperglycemic medications. Results: A total of 296 and 190 T2D patients without or with CKD, respectively, were recruited. Baseline CKD risk was moderate, high, or very high in 82, 53, and 45 patients, respectively. Treatment reduced HbA1c by 0.90%-1.20%. Relevant differences were seen neither between non-CKD and CKD patients nor among CKD subgroups. Notable weight losses were achieved in both non-CKD and CKD patients. The median reduction was higher in the former at 6 months (5.90 kg vs. 4.50 kg, P = 0.008) and at end of study (6.90 kg vs. 5.00 kg, P = 0.087). A trend toward slightly lower weight losses as CKD severity increased was observed. CKD markers improved across all CKD subgroups. Relevant differences were not observed for other variables, either between non-CKD and CKD patients, or among CKD subgroups. Safety concerns were not reported. Conclusion: The safety/efficacy of OW s.c. semaglutide to improve glycemic control and weight in T2D patients with CKD is not notably lower than that in T2D patients without renal failure. CKD severity barely influences treatment response. OW s.c. semaglutide can be useful to manage T2D patients with CKD in daily clinical practice.


Assuntos
Diabetes Mellitus Tipo 2 , Insuficiência Renal Crônica , Humanos , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/tratamento farmacológico , Hemoglobinas Glicadas , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/tratamento farmacológico , Redução de Peso
5.
Nefrología (Madrid) ; 43(6): 663-806, nov.- dec. 2023. tab, graf, ilus
Artigo em Espanhol | IBECS | ID: ibc-228015

RESUMO

La hiperpotasemia es una alteración electrolítica frecuente con consecuencias potencialmente graves a corto, medio y largo plazo, tanto en términos de morbilidad y mortalidad como de consumo de recursos del Sistema Nacional de Salud. El abordaje de la hiperpotasemia por diversas especialidades médicas y la reciente disponibilidad de nuevos tratamientos farmacológicos específicos hace necesaria una acción unificada y actualizada. El presente documento de consenso entre las sociedades científicas más directamente implicadas en el abordaje de la hiperpotasemia (Sociedad Española de Cardiología, Sociedad Española de Endocrinología y Nutrición, Sociedad Española de Medicina Interna, Sociedad Española de Medicina de Urgencias y Emergencias y Sociedad Española de Nefrología) repasa, en primer lugar, aspectos básicos del balance de potasio y de la potasemia, centrándose posteriormente en el concepto, epidemiología, fisiopatología, y abordaje diagnóstico y terapéutico de la hiperpotasemia. Se han revisado las evidencias y los principales estudios publicados con el objetivo de que sea una herramienta útil en el abordaje multidisciplinar del paciente con hiperpotasemia (AU)


Hyperkalaemia is a common electrolyte imbalance with potentially serious short-, medium- and long-term consequences on morbidity and mortality rates and the use of national health service resources. The fact that different medical specialities can manage hyperkalaemia makes it important to have a unified approach, and the recent availability of new specific drug treatments means that the approach needs to be updated. This consensus document from the scientific societies most directly involved in the management of hyperkalaemia (Sociedad Española de Cardiología [Spanish Society of Cardiology], Sociedad Española de Endocrinología y Nutrición [Spanish Society of Endocrinology and Nutrition], Sociedad Española de Medicina Interna [Spanish Society of Internal Medicine], Sociedad Española de Medicina de Urgencias y Emergencias [Spanish Society of Emergency Medicine and Emergencies] and Sociedad Española de Nefrología [Spanish Society of Nephrology]) first of all reviews basic aspects of potassium balance and blood potassium. Then it goes on to focus on the concept, epidemiology, pathophysiology and diagnostic and therapeutic approaches to hyperkalaemia. The available evidence and the main published studies have been reviewed with the aim of providing a useful tool in the multidisciplinary approach to patients with hyperkalaemia (AU)


Assuntos
Humanos , Hiperpotassemia/diagnóstico , Hiperpotassemia/terapia , Sociedades Médicas , Consenso , Espanha
7.
Front Nutr ; 10: 1170841, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37396132

RESUMO

Purpose: Numerous articles have recently studied the involvement of the gut microbiota in neurological diseases. Aging is associated with changes in the microbiome, which implies a reduction in microbial biodiversity among other changes. Considering that the consumption of a fermented-food diet improves intestinal permeability and barrier function, it seems of interest to study its participation in the prevention of neurodegenerative diseases. This article reviews existing studies to establish whether the consumption of fermented foods and fermented beverages prevents or ameliorates neurodegenerative decline in old age. Methods: The protocol used was performed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Details of the protocol for this systematic review are registered on PROSPERO (CRD42021250921). Results: Out of 465 articles identified in the Pubmed, Scopus, and Cochrane Library databases, a total of 29 that examined the relationship of the consumption of fermented products with cognitive impairment in old people were selected (22 cohort, 4 case-control, and 3 cross-sectional studies). The results suggest that low-to-moderate alcohol consumption and daily intake of coffee, soy products, and fermented-food diets in general are associated with a lower risk of dementia and Alzheimer's disease. Conclusion: Daily consumption of fermented foods and beverages, either alone or as part of a diet, has neuroprotective effects and slows cognitive decline in old people. Systematic review registration: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=250921, identifier: CRD42021250921.

8.
Eur J Intern Med ; 116: 16-26, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37394383

RESUMO

Thyroid dysfunction is a common endocrine disorder in the general population, with a reported prevalence of 10-15%. However, this rate is even higher in older adults, with an estimated prevalence of ≈25% in some populations. Since elderly patients usually present more comorbidities than younger individuals, thyroid dysfunction may carry a synergistic negative health impact, mainly due to increased cardiovascular disease risk. Moreover, thyroid dysfunction in the elderly can be more difficult to diagnose due to its subtle or even asymptomatic clinical presentation, and the interpretation of thyroid function tests may be affected by drugs that interfere with thyroid function or by the coexistence of several diseases. On the other hand, thyroid nodules are also a prevalent condition in older adults, and its incidence increases with age. The assessment and management of thyroid nodules in the ageing patient should take into account several factors, as risk stratification, thyroid cancer biology, patient´s overall health, comorbidities, treatment preferences, and goals of care. In this review article, we summarize the current knowledge on the pathophysiology, diagnosis, and therapeutic management of thyroid dysfunction in elderly patients and we also review how to identify and manage thyroid nodules in this population.

9.
Clin Nutr ; 42(8): 1389-1398, 2023 08.
Artigo em Inglês | MEDLINE | ID: mdl-37421852

RESUMO

BACKGROUND: Oleocanthal and oleacein are olive oil phenolic compounds with well known anti-inflammatory and anti-oxidant properties. The main evidence, however, is provided by experimental studies. Few human studies have examined the health benefits of olive oils rich in these biophenols. Our aim was to assess the health properties of rich oleocanthal and oleacein extra virgin olive oil (EVOO), compared to those of common olive oil (OO), in people with prediabetes and obesity. METHODS: Randomised, double-blind, crossover trial done in people aged 40-65 years with obesity (BMI 30-40 kg/m2) and prediabetes (HbA1c 5.7-6.4%). The intervention consisted in substituting for 1 month the oil used for food, both raw and cooked, by EVOO or OO. No changes in diet or physical activity were recommended. The primary outcome was the inflammatory status. Secondary outcomes were the oxidative status, body weight, glucose handling and lipid profile. An ANCOVA model adjusted for age, sex and treatment administration sequence was used for the statistical analysis. RESULTS: A total of 91 patients were enrolled (33 men and 58 women) and finished the trial. A decrease in interferon-γ was observed after EVOO treatment, reaching inter-treatment differences (P = 0.041). Total antioxidant status increased and lipid and organic peroxides decreased after EVOO treatment, the changes reaching significance compared to OO treatment (P < 0.05). Decreases in weight, BMI and blood glucose (p < 0.05) were found after treatment with EVOO and not with OO. CONCLUSIONS: Treatment with EVOO rich in oleocanthal and oleacein differentially improved oxidative and inflammatory status in people with obesity and prediabetes.


Assuntos
Antioxidantes , Estado Pré-Diabético , Masculino , Humanos , Feminino , Azeite de Oliva , Estudos Cross-Over , Obesidade
10.
Biomed Pharmacother ; 161: 114561, 2023 May.
Artigo em Inglês | MEDLINE | ID: mdl-36934556

RESUMO

AIMS: To assess the comparative effects of glucagon-like peptide-1 receptor agonists (GLP-1RA), 4-dipeptidyl peptidase inhibitors (DPP-4I), and metformin treatment during one year on metabolic syndrome (MetS) components and severity in MetS patients. METHODS: Prospective study (n = 6165 adults) within the frame of PREDIMED-Plus trial. The major end-point was changes on MetS components and severity after one- year treatment of GLP-1RA, DPP-4I, and metformin. Anthropometric measurements (weight, height and waist circumference), body mass index (BM), and blood pressure were registered. Blood samples were collected after overnight fasting. Plasma glucose, glycosylated hemoglobin (HbA1c), plasma triglycerides and cholesterol were measured. Dietary intakes as well as physical activity were assessed through validated questionnaires. RESULTS: MetS parameters improved through time. The treated groups improved glycaemia compared with untreated (glycaemia ∆ untreated: -1.7 mg/dL(± 13.5); ∆ metformin: - 2.5(± 23.9) mg/dL; ∆ DPP-4I: - 4.5(± 42.6); mg/dL ∆ GLP-1RA: - 4.3(± 50.9) mg/dL; and HbA1c: ∆ untreated: 0.0(± 0.3) %; ∆ metformin: - 0.1(± 0.7) %; ∆ DPP-4I: - 0.1(± 1.0) %; ∆ GLP-1RA: - 0.2(± 1.2) %. Participants decreased BMI and waist circumference. GLP-1RA and DPP-4I participants registered the lowest decrease in BMI (∆ untreated: -0.8(± 1.6) kg/m2; ∆ metformin: - 0.8(± 1.5) kg/m2; ∆ DPP-4I: - 0.6(± 1.3) kg/m2; ∆ GLP-1RA: - 0.5(± 1.2) kg/m2. and their waist circumference (∆ untreated: -2.8(± 5.2) cm; ∆ metformin: - 2.6(± 15.2) cm; ∆ DPP-4I: - 2.1(± 4.8) cm; ∆ GLP-1RA: - 2.4(± 4.1) cm. CONCLUSION: In patients with MetS and healthy lifestyle intervention, those treated with GLP-1RA and DPP-4I obtained better glycemic profile. Anthropometric improvements were modest.


Assuntos
Diabetes Mellitus Tipo 2 , Inibidores da Dipeptidil Peptidase IV , Síndrome Metabólica , Metformina , Adulto , Humanos , Metformina/farmacologia , Metformina/uso terapêutico , Hipoglicemiantes/farmacologia , Hipoglicemiantes/uso terapêutico , Diabetes Mellitus Tipo 2/tratamento farmacológico , Inibidores da Dipeptidil Peptidase IV/farmacologia , Inibidores da Dipeptidil Peptidase IV/uso terapêutico , Síndrome Metabólica/tratamento farmacológico , Hemoglobinas Glicadas , Estudos Prospectivos , Peptídeo 1 Semelhante ao Glucagon , Dipeptidil Peptidases e Tripeptidil Peptidases
11.
Obesity (Silver Spring) ; 31(4): 1064-1074, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36876627

RESUMO

OBJECTIVE: Alterations in the hepatic lipidome are a crucial factor involved in the pathophysiology of nonalcoholic fatty liver disease (NAFLD). The aim of this study was to evaluate the serum and hepatic profile of branched-chain fatty acids (BCFAs) in patients with different stages of NAFLD. METHODS: This was a case-control study performed in 27 patients without NAFLD, 49 patients with nonalcoholic fatty liver, and 17 patients with nonalcoholic steatohepatitis, defined by liver biopsies. Serum and hepatic levels of BCFAs were analyzed by gas chromatography-mass spectrometry. The hepatic expression of genes involved in the endogenous synthesis of BCFAs was analyzed by real-time quantitative polymerase chain reaction (RT-qPCR). RESULTS: A significant increase in hepatic BCFAs was found in subjects with NAFLD compared with those without NAFLD; no differences were observed in serum BCFAs between study groups. Trimethyl BCFAs, iso-BCFAs, and anteiso-BCFAs were increased in subjects with NAFLD (either nonalcoholic fatty liver or nonalcoholic steatohepatitis) compared with those without NAFLD. Correlation analysis showed a relationship between hepatic BCFAs and the histopathological diagnosis of NAFLD, as well as other histological and biochemical parameters related to this disease. Gene expression analysis in liver showed that the mRNA levels of BCAT1, BCAT2, and BCKDHA were upregulated in patients with NAFLD. CONCLUSIONS: These results suggest that the increased production of liver BCFAs might be related to NAFLD development and progression.


Assuntos
Hepatopatia Gordurosa não Alcoólica , Humanos , Hepatopatia Gordurosa não Alcoólica/metabolismo , Estudos de Casos e Controles , Fígado/metabolismo , Ácidos Graxos/metabolismo , Transaminases/metabolismo
12.
Endocrinol Diabetes Nutr (Engl Ed) ; 70 Suppl 1: 95-102, 2023 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-36906509

RESUMO

OBJECTIVE: To provide practical recommendations for the comprehensive approach of people with type 2 diabetes according to evidence-based medicine. PARTICIPANTS: Members of the Diabetes Knowledge Area of the Spanish Society of Endocrinology and Nutrition. METHODS: The recommendations were formulated according to the degrees of evidence of the Standards of Medical Care in Diabetes-2022. After reviewing the available evidence and formulating recommendations by the authors of each section, several rounds of comments were developed incorporating the contributions and voting on controversial points. Finally, the final document was sent to the rest of the members of the area for review and incorporation of contributions, to finally carry out the same process with the members of the Spanish Society of Endocrinology and Nutrition Board of Directors. CONCLUSIONS: The document establishes practical recommendations based on the latest available evidence for the management of people with type 2 diabetes.


Assuntos
Diabetes Mellitus Tipo 2 , Humanos , Diabetes Mellitus Tipo 2/terapia , Sociedades Médicas , Espanha
13.
Sportis (A Coruña) ; 9(1): 60-80, ene. 2023. tab
Artigo em Espanhol | IBECS | ID: ibc-214513

RESUMO

Desde los primeros años de vida, el desarrollo cognitivo está estrechamente relacionado con la habilidad motriz o el desarrollo motor. El principal objetivo fue analizar las relaciones existentes entre el rendimiento académico en edad escolar y la habilidad del lanzamiento. La muestra estuvo conformada por 152 estudiantes, 66 chicas y 86 chicos con edad media de 8,54 ± 0,61 años. La intervención constó de cuatro sesiones destinadas a la recogida de datos, la realización de test de evaluación del lanzamiento y la mejora de la habilidad de lanzamiento. Los resultados obtenidos muestran que tras la intervención se produjo una mejora en la ejecución técnica de los lanzamientos (Una mano (t (139) = 3,23; diff mean = 0,200; p < 0,01); Dos manos (t (139) = 5,636; diff mean = 0,307; p < 0,01)), aunque no así en la distancia (Una mano (t (139) = -0,187; diff mean = - 0,026; p > 0,05); Dos manos (t (139) = - 4,604; diff mean = - 0,434; p < 0,01)). La práctica deportiva se relaciona con un mejor rendimiento académico en la nota media general y asignaturas como Francés, Educación Física o Educación Artística. Por último, la habilidad de lanzamiento se relaciona significativamente con el rendimiento académico en distintas asignaturas, especialmente con Educación Física. Podemos concluir que una intervención a corto plazo puede mejorar la ejecución técnica del lanzamiento, y que la práctica deportiva y la habilidad de lanzamiento se relaciona significativamente con el rendimiento académico en algunas áreas curriculares de Educación Primaria. (AU)


From the earliest years of life, cognitive development is closely related to motor ability or motor development. The aim of this study was to analyze the relationships between academic performance at school age and the basic motor skill of throwing. The sample consisted of 152 students, 66 girls and 86 boys with a mean age of 8.54 ± 0.61 years. The intervention consisted of four sessions aimed at data collection, performance of throwing evaluation tests, and improvement and refinement of throwing skills. The results obtained show that after the intervention there was an improvement in the technical execution of throws (one hand (t (139) = 3.23; diff mean = 0.200; p < 0.01); two hands (t (139) = 5.636; diff mean = 0.307; p < 0.01), but not in distance (one hand t (139) = -0.187; diff mean = - 0.026; p > 0.05); two hands t (139) = - 4.604; diff mean = - 0.434; p < 0.01). Sport practice has been related to better academic performance in the overall average grade and in some subjects such as French, Physical Education or Art Education. Finally, throwing skill is significantly related to academic performance in some of the curricular areas, especially Physical Education. We can conclude that a short-term intervention can improve the technical execution of throwing, and that sports practice and throwing ability is significantly related to academic performance in some curricular areas of Primary Education. (AU)


Assuntos
Humanos , Masculino , Feminino , Criança , Atividade Motora , Desempenho Acadêmico , Destreza Motora , Cognição , Estudos Longitudinais , Ensino Fundamental e Médio
15.
Endocrinol Diabetes Nutr (Engl Ed) ; 69(9): 732-743, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36404267

RESUMO

OBJECTIVE: To guide professionals involved in the care of people with diabetes mellitus who practice sport. PARTICIPANTS: Members of the Diabetes Mellitus Working Group of the Spanish Society of Endocrinology and Nutrition. METHODS: A group of experts in each area covered by the statement carried out a bibliographic review of the available evidence for each topic, based on which recommendations were subsequently agreed upon within the Diabetes Mellitus Working Group. CONCLUSIONS: The statement provides practical recommendations for the management of diabetes mellitus during sports practice.


Assuntos
Diabetes Mellitus , Endocrinologia , Humanos , Diabetes Mellitus/terapia , Consenso
17.
Environ Health ; 21(1): 76, 2022 08 17.
Artigo em Inglês | MEDLINE | ID: mdl-35978396

RESUMO

BACKGROUND: Recent reports have suggested that air pollution may impact thyroid function, although the evidence is still scarce and inconclusive. In this study we evaluated the association of exposure to air pollutants to thyroid function parameters in a nationwide sample representative of the adult population of Spain. METHODS: The Di@bet.es study is a national, cross-sectional, population-based survey which was conducted in 2008-2010 using a random cluster sampling of the Spanish population. The present analyses included 3859 individuals, without a previous thyroid disease diagnosis, and with negative thyroid peroxidase antibodies (TPO Abs) and thyroid-stimulating hormone (TSH) levels of 0.1-20 mIU/L. Participants were assigned air pollution concentrations for particulate matter <2.5µm (PM2.5) and Nitrogen Dioxide (NO2), corresponding to the health examination year, obtained by means of modeling combined with measurements taken at air quality stations (CHIMERE chemistry-transport model). TSH, free thyroxine (FT4), free triiodothyronine (FT3) and TPO Abs concentrations were analyzed using an electrochemiluminescence immunoassay (Modular Analytics E170 Roche). RESULTS: In multivariate linear regression models, there was a highly significant negative correlation between PM2.5 concentrations and both FT4 (p<0.001), and FT3 levels (p<0.001). In multivariate logistic regression, there was a significant association between PM2.5 concentrations and the odds of presenting high TSH [OR 1.24 (1.01-1.52) p=0.043], lower FT4 [OR 1.25 (1.02-1.54) p=0.032] and low FT3 levels [1.48 (1.19-1.84) p=<0.001] per each IQR increase in PM2.5 (4.86 µg/m3). There was no association between NO2 concentrations and thyroid hormone levels. No significant heterogeneity was seen in the results between groups of men, pre-menopausal and post-menopausal women. CONCLUSIONS: Exposures to PM2.5 in the general population were associated with mild alterations in thyroid function.


Assuntos
Poluentes Atmosféricos , Poluição do Ar , Adulto , Poluentes Atmosféricos/efeitos adversos , Poluentes Atmosféricos/análise , Poluição do Ar/análise , Estudos Transversais , Feminino , Humanos , Masculino , Dióxido de Nitrogênio/análise , Material Particulado/análise , Glândula Tireoide/química , Hormônios Tireóideos , Tireotropina
18.
Metabolism ; 136: 155290, 2022 11.
Artigo em Inglês | MEDLINE | ID: mdl-35985506

RESUMO

BACKGROUND: Men with obesity tend to be insulin resistant and often have low-normal testosterone concentrations. We conducted a clinical trial aimed to evaluate potential therapeutic strategies for low testosterone in men with obesity. METHODS: We did a 1-year, parallel, randomized, double-blind, placebo-controlled trial, where we evaluated the independent and combined effects of metformin and testosterone in 106 men with obesity, aged 18-50 years, who had low levels of testosterone and no diabetes mellitus. The primary outcome was change in insulin resistance, measured as Homeostasis Model Assessment for Insulin Resistance (HOMA-IR) index. Secondary outcomes included changes in total and free serum testosterone, body composition, metabolic variables, erectile function, and health-related quality of life (HRQoL). RESULTS: In the intention-to-treat analysis, the HOMA-IR index decreased significantly in all active groups compared to placebo (metformin -2.4, 95 % CI -4.1 to -0.8, p = 0.004; testosterone -2.7, 95 % CI -4.3 to -1.1, p = 0.001; combination -3.4, 95 % CI -5.0 to -1.8, p < 0.001). Combination therapy was not superior to testosterone alone in decreasing insulin resistance (-0.7, 95 % CI -2.3 to 0.9, p = 0.383). Only the combination of metformin plus testosterone significantly increased total and free testosterone concentrations, compared to placebo. No significant changes in body composition (except for a higher decrease in fat mass in the metformin and combination group), metabolic variables, erectile function, or HRQoL were found with any treatment. CONCLUSIONS: Among men with obesity and low testosterone concentrations, the combination of metformin plus testosterone, metformin only, and testosterone only, compared to placebo, reduced insulin resistance with no evidence of additive benefit.


Assuntos
Disfunção Erétil , Resistência à Insulina , Metformina , Método Duplo-Cego , Disfunção Erétil/complicações , Disfunção Erétil/tratamento farmacológico , Humanos , Hipoglicemiantes/farmacologia , Hipoglicemiantes/uso terapêutico , Insulina/metabolismo , Masculino , Metformina/uso terapêutico , Obesidade/complicações , Obesidade/tratamento farmacológico , Qualidade de Vida , Testosterona
19.
Front Nutr ; 9: 897089, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35967785

RESUMO

Background: Helping consumers to improve the nutritional quality of their diet is a key public health action to prevent cardiovascular diseases (CVDs). The modified version of the Food Standard Agency Nutrient Profiling System Dietary Index (FSAm-NPS DI) underpinning the Nutri-Score front-of-pack label has been used in public health strategies to address the deleterious consequences of poor diets. This study aimed to assess the association between the FSAm-NPS DI and some CVD risk factors including body mass index (BMI), waist circumference, plasma glucose levels, triglyceride levels, high-density lipoprotein (HDL) and low-density lipoprotein (LDL) cholesterol, and diastolic and systolic blood pressure. Materials and Methods: Dietary intake was assessed at baseline and after 1 year of follow-up using a 143-item validated semi-quantitative food-frequency questionnaire. Dietary indices based on FSAm-NPS applied at an individual level were computed to characterize the diet quality of 5,921 participants aged 55-75 years with overweight/obesity and metabolic syndrome from the PREDIMED-plus cohort. Associations between the FSAm-NPS DI and CVD risk factors were assessed using linear regression models. Results: Compared to participants with a higher nutritional quality of diet (measured by a lower FSAm-NPS DI at baseline or a decrease in FSAm-NPS DI after 1 year), those participants with a lower nutritional quality of diet (higher FSAm-NPS DI or an increase in score) showed a significant increase in the levels of plasma glucose, triglycerides, diastolic blood pressure, BMI, and waist circumference (ß coefficient [95% confidence interval]; P for trend) (1.67 [0.43, 2.90]; <0.001; 6.27 [2.46, 10.09]; <0.001; 0.56 [0.08, 1.05]; 0.001; 0.51 [0.41, 0.60]; <0.001; 1.19 [0.89, 1.50]; <0.001, respectively). No significant associations in relation to changes in HDL and LDL-cholesterol nor with systolic blood pressure were shown. Conclusion: This prospective cohort study suggests that the consumption of food items with a higher FSAm-NPS DI is associated with increased levels of several major risk factors for CVD including adiposity, fasting plasma glucose, triglycerides, and diastolic blood pressure. However, results must be cautiously interpreted because no significant prospective associations were identified for critical CVD risk factors, such as HDL and LDL-cholesterol, and systolic blood pressure.

20.
Ageing Res Rev ; 80: 101696, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35843589

RESUMO

In the last few decades, the loss of skeletal muscle mass and function, known as sarcopenia, has significantly increased in prevalence, becoming a major global public health concern. On the other hand, the prevalence of non-alcoholic fatty liver disease (NAFLD) has also reached pandemic proportions, constituting the leading cause of hepatic fibrosis worldwide. Remarkably, while sarcopenia and NAFLD-related fibrosis are independently associated with all-cause mortality, the combination of both conditions entails a greater risk for all-cause and cardiac-specific mortality. Interestingly, both sarcopenia and NAFLD-related fibrosis share common pathophysiological pathways, including insulin resistance, chronic inflammation, hyperammonemia, alterations in the regulation of myokines, sex hormones and growth hormone/insulin-like growth factor-1 signaling, which may explain reciprocal connections between these two disorders. Additional contributing factors, such as the gut microbiome, may also play a role in this relationship. In skeletal muscle, phosphatidylinositol 3-kinase/Akt and myostatin signaling are the central anabolic and catabolic pathways, respectively, and the imbalance between them can lead to muscle wasting in patients with NAFLD-related fibrosis. In this review, we summarize the bidirectional influence between NAFLD-related fibrosis and sarcopenia, highlighting the main potential mechanisms involved in this complex crosstalk, and we discuss the synergistic effects of both conditions in overall and cardiovascular mortality.


Assuntos
Hepatopatia Gordurosa não Alcoólica , Sarcopenia , Fibrose , Humanos , Músculo Esquelético/patologia , Hepatopatia Gordurosa não Alcoólica/complicações , Hepatopatia Gordurosa não Alcoólica/epidemiologia
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