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1.
N Engl J Med ; 387(24): 2245-2257, 2022 12 15.
Artículo en Inglés | MEDLINE | ID: mdl-36322838

RESUMEN

BACKGROUND: A once-weekly, 2.4-mg dose of subcutaneous semaglutide, a glucagon-like peptide-1 receptor agonist, is used to treat obesity in adults, but assessment of the drug in adolescents has been lacking. METHODS: In this double-blind, parallel-group, randomized, placebo-controlled trial, we enrolled adolescents (12 to <18 years of age) with obesity (a body-mass index [BMI] in the 95th percentile or higher) or with overweight (a BMI in the 85th percentile or higher) and at least one weight-related coexisting condition. Participants were randomly assigned in a 2:1 ratio to receive once-weekly subcutaneous semaglutide (at a dose of 2.4 mg) or placebo for 68 weeks, plus lifestyle intervention. The primary end point was the percentage change in BMI from baseline to week 68; the secondary confirmatory end point was weight loss of at least 5% at week 68. RESULTS: A total of 201 participants underwent randomization, and 180 (90%) completed treatment. All but one of the participants had obesity. The mean change in BMI from baseline to week 68 was -16.1% with semaglutide and 0.6% with placebo (estimated difference, -16.7 percentage points; 95% confidence interval [CI], -20.3 to -13.2; P<0.001). At week 68, a total of 95 of 131 participants (73%) in the semaglutide group had weight loss of 5% or more, as compared with 11 of 62 participants (18%) in the placebo group (estimated odds ratio, 14.0; 95% CI, 6.3 to 31.0; P<0.001). Reductions in body weight and improvement with respect to cardiometabolic risk factors (waist circumference and levels of glycated hemoglobin, lipids [except high-density lipoprotein cholesterol], and alanine aminotransferase) were greater with semaglutide than with placebo. The incidence of gastrointestinal adverse events was greater with semaglutide than with placebo (62% vs. 42%). Five participants (4%) in the semaglutide group and no participants in the placebo group had cholelithiasis. Serious adverse events were reported in 15 of 133 participants (11%) in the semaglutide group and in 6 of 67 participants (9%) in the placebo group. CONCLUSIONS: Among adolescents with obesity, once-weekly treatment with a 2.4-mg dose of semaglutide plus lifestyle intervention resulted in a greater reduction in BMI than lifestyle intervention alone. (Funded by Novo Nordisk; STEP TEENS ClinicalTrials.gov number, NCT04102189.).


Asunto(s)
Fármacos Antiobesidad , Obesidad Infantil , Adolescente , Humanos , Método Doble Ciego , Obesidad Infantil/tratamiento farmacológico , Obesidad Infantil/terapia , Pérdida de Peso/efectos de los fármacos , Estilo de Vida Saludable , Receptor del Péptido 1 Similar al Glucagón/agonistas , Índice de Masa Corporal , Fármacos Antiobesidad/administración & dosificación , Fármacos Antiobesidad/efectos adversos , Administración Cutánea , Niño
2.
Lancet ; 401(10394): 2149-2162, 2023 06 24.
Artículo en Inglés | MEDLINE | ID: mdl-37030316

RESUMEN

Type 1 diabetes is a chronic disease caused by autoimmune destruction of pancreatic ß cells. Individuals with type 1 diabetes are reliant on insulin for survival. Despite enhanced knowledge related to the pathophysiology of the disease, including interactions between genetic, immune, and environmental contributions, and major strides in treatment and management, disease burden remains high. Studies aimed at blocking the immune attack on ß cells in people at risk or individuals with very early onset type 1 diabetes show promise in preserving endogenous insulin production. This Seminar will review the field of type 1 diabetes, highlighting recent progress within the past 5 years, challenges to clinical care, and future directions in research, including strategies to prevent, manage, and cure the disease.


Asunto(s)
Diabetes Mellitus Tipo 1 , Células Secretoras de Insulina , Humanos , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Insulina/uso terapéutico
3.
N Engl J Med ; 382(22): 2117-2128, 2020 05 28.
Artículo en Inglés | MEDLINE | ID: mdl-32233338

RESUMEN

BACKGROUND: Obesity is a chronic disease with limited treatment options in pediatric patients. Liraglutide may be useful for weight management in adolescents with obesity. METHODS: In this randomized, double-blind trial, which consisted of a 56-week treatment period and a 26-week follow-up period, we enrolled adolescents (12 to <18 years of age) with obesity and a poor response to lifestyle therapy alone. Participants were randomly assigned (1:1) to receive either liraglutide (3.0 mg) or placebo subcutaneously once daily, in addition to lifestyle therapy. The primary end point was the change from baseline in the body-mass index (BMI; the weight in kilograms divided by the square of the height in meters) standard-deviation score at week 56. RESULTS: A total of 125 participants were assigned to the liraglutide group and 126 to the placebo group. Liraglutide was superior to placebo with regard to the change from baseline in the BMI standard-deviation score at week 56 (estimated difference, -0.22; 95% confidence interval [CI], -0.37 to -0.08; P = 0.002). A reduction in BMI of at least 5% was observed in 51 of 113 participants in the liraglutide group and in 20 of 105 participants in the placebo group (estimated percentage, 43.3% vs. 18.7%), and a reduction in BMI of at least 10% was observed in 33 and 9, respectively (estimated percentage, 26.1% vs. 8.1%). A greater reduction was observed with liraglutide than with placebo for BMI (estimated difference, -4.64 percentage points) and for body weight (estimated difference, -4.50 kg [for absolute change] and -5.01 percentage points [for relative change]). After discontinuation, a greater increase in the BMI standard-deviation score was observed with liraglutide than with placebo (estimated difference, 0.15; 95% CI, 0.07 to 0.23). More participants in the liraglutide group than in the placebo group had gastrointestinal adverse events (81 of 125 [64.8%] vs. 46 of 126 [36.5%]) and adverse events that led to discontinuation of the trial treatment (13 [10.4%] vs. 0). Few participants in either group had serious adverse events (3 [2.4%] vs. 5 [4.0%]). One suicide, which occurred in the liraglutide group, was assessed by the investigator as unlikely to be related to the trial treatment. CONCLUSIONS: In adolescents with obesity, the use of liraglutide (3.0 mg) plus lifestyle therapy led to a significantly greater reduction in the BMI standard-deviation score than placebo plus lifestyle therapy. (Funded by Novo Nordisk; NN8022-4180 ClinicalTrials.gov number, NCT02918279.).


Asunto(s)
Estilo de Vida Saludable , Incretinas/uso terapéutico , Liraglutida/uso terapéutico , Obesidad Infantil/tratamiento farmacológico , Adolescente , Glucemia/análisis , Índice de Masa Corporal , Niño , Terapia Combinada , Método Doble Ciego , Femenino , Enfermedades Gastrointestinales/inducido químicamente , Hemoglobina Glucada/análisis , Humanos , Incretinas/efectos adversos , Inyecciones Subcutáneas , Liraglutida/efectos adversos , Masculino , Obesidad Infantil/sangre , Obesidad Infantil/terapia
4.
Pediatr Diabetes ; 23(4): 439-446, 2022 06.
Artículo en Inglés | MEDLINE | ID: mdl-35138021

RESUMEN

Insulin is commonly used to reverse gluco-toxicity in youth with newly diagnosed type 2 diabetes (T2D), but many are subsequently weaned off insulin. We analyzed Pediatric Diabetes Consortium (PDC) data to determine how long glycemic control is maintained after termination of initial insulin treatment. Youth with T2D who had previously been on insulin but were on either an intensive lifestyle intervention alone or metformin alone upon enrollment in the PDC T2D Registry were studied (N = 183). The primary outcome was time to treatment failure, defined by need to restart insulin or metformin or another diabetes medication. Data were analyzed using logistic regression to assess risk factors for treatment failure. Of the 183 participants studied (mean age 15 years, diabetes duration 1.7 years), 54% experienced treatment failure (median follow-up time 1.7 years). In the subgroup on metformin monotherapy (N = 140), 45% subsequently required restart of insulin. Moreover, of participants in the subgroup treated with an intensive lifestyle intervention alone (N = 43), 81% restarted insulin or were treated with metformin or other diabetes medication. In both groups, median time to treatment failure was 1.2 years. Higher HbA1c at enrollment was significantly associated with treatment failure (p < 0.001). Youth with T2D who are initially treated with insulin have a high rate of treatment failure when switched to intensive lifestyle alone or metformin alone. Our data highlight the severe and progressive nature of youth onset T2D, hence patients should be monitored closely for deteriorating glycemic control after being weaned off insulin.


Asunto(s)
Diabetes Mellitus Tipo 2 , Metformina , Adolescente , Glucemia , Diabetes Mellitus Tipo 2/tratamiento farmacológico , Hemoglobina Glucada/análisis , Humanos , Hipoglucemiantes/efectos adversos , Insulina/efectos adversos , Metformina/uso terapéutico , Insuficiencia del Tratamiento
5.
J Behav Med ; 45(2): 227-239, 2022 04.
Artículo en Inglés | MEDLINE | ID: mdl-35006500

RESUMEN

People with prediabetes are at risk for type 2 diabetes. They may discount the future delay discounting (DD), and not engage in preventive health behaviors. Episodic future thinking (EFT) can reduce DD when future scenarios are cued, but research is needed to assess long-term effects of EFT and when EFT is not cued. This study tested EFT training compared to control for people with prediabetes enrolled in a 6-month weight loss program on DD, weight, HbA1c, and physical activity. Results showed a reliable EFT effect on reducing DD in cued (p = 0.0035), and uncued DD tasks (p = 0.048), and significant overall changes in weight (p < 0.001), HbA1c (p, 0.001) and physical activity (p = 0.003), but no significant differences in these outcomes by group (p's > 0.05). Sixty-eight percent of the sample ended below the prediabetes HbA1c range. These results suggest that DD can be modified over extended periods, and the effects of EFT can be observed without EFT cues. However, these data do not suggest that changes in weight, HbA1c or physical activity were due to EFT training. The study was initiated before the COVID-19 pandemic which provided the opportunity to compare differences for people treated in-person or remotely. Analyses showed no differences in DD, weight, HBA1c or physical activity outcomes were observed between in-person and remote treatment, suggesting telehealth is a scalable approach to treating prediabetes.


Asunto(s)
Descuento por Demora , Diabetes Mellitus Tipo 2 , Hemoglobina Glucada , Estado Prediabético , Pérdida de Peso , Diabetes Mellitus Tipo 2/psicología , Humanos , Estado Prediabético/psicología , Pensamiento
6.
J Behav Med ; 44(2): 222-230, 2021 04.
Artículo en Inglés | MEDLINE | ID: mdl-32989616

RESUMEN

The present study sought to determine if episodic future thinking (EFT) can decrease delay discounting (DD) and demand for fast food under simulations of economic scarcity in adults at risk for diabetes (i.e., overweight/obese and with hemoglobin A1c values in, or approaching, the prediabetic range). Across two sessions, participants completed assessments of DD and food demand at baseline and while prompted to: (1) engage in either EFT or control episodic recent thinking, and (2) while reading a brief narrative describing either economic scarcity or neutral income conditions. Results showed that EFT significantly reduced DD, whereas the economic scarcity narrative significantly increased DD; no significant interaction between EFT and scarcity was observed. No significant effect of either EFT or scarcity was observed on food demand. We conclude that EFT decreases DD even when challenged by simulated economic scarcity in adults at risk for diabetes. The absence of a significant interaction between EFT and scarcity suggests that these variables operate independently to influence DD in opposing directions. Effects of EFT and economic scarcity on food demand require further study. The present study was registered on clinicaltrials.gov (NCT03664726).


Asunto(s)
Descuento por Demora , Diabetes Mellitus Tipo 2 , Adulto , Humanos , Obesidad , Sobrepeso , Pensamiento
7.
Behav Med ; 47(3): 194-204, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-32275202

RESUMEN

The majority of people with prediabetes transition to type 2 diabetes. Research has suggested that persons with type 2 diabetes are likely to discount the future and focus on immediate rewards. This study was designed to assess whether this process of delay discounting (DD) is associated with glycemic regulation, medication adherence and eating and exercise behaviors in adults with prediabetes. Participants included 81 adults with prediabetes who were also prescribed hypertension or dyslipidemia drugs, which is common for people with prediabetes. Participants completed adjusting amount DD $100 and $1000 tasks, as well assessments of glycemic control (Hemoglobin (Hb) A1c), medication adherence, diet quality, and objectively measured physical activity. Relationships between DD and these variables were assessed. Results showed higher rates of DD were related to higher HbA1c; as well as poorer medication adherence, lower diet quality and lower physical activity. Hierarchical regression showed that the association between minority status, a known risk factor for type 2 diabetes, was moderated by DD, as minorities with higher DD had greater HbA1c values. Delay discounting may represent a novel target to prevent progression from prediabetes to type 2 diabetes.


Asunto(s)
Descuento por Demora , Diabetes Mellitus Tipo 2 , Estado Prediabético , Adulto , Glucemia , Conductas Relacionadas con la Salud , Humanos
8.
Pediatr Surg Int ; 37(9): 1259-1264, 2021 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-34014352

RESUMEN

BACKGROUND: Studies have demonstrated that same-day discharge (SDD) following thyroid resection is safe and feasible in adults but there are no similar studies in the pediatric age group. The purpose of this study is to evaluate the influence of SDD on 30-day readmission rates following thyroid surgery in pediatric patients. METHODS: This retrospective cohort study used the American College of Surgeons National Surgical Quality Improvement Program-Pediatric database to evaluate 30-day readmission rates among patients < 19 years of age who underwent thyroid resection between 2012 and 2017. Patients excluded were those discharged more than 2 days after surgery. The main exposure variable was SDD and the primary outcome was 30-day readmission. Secondary outcomes included wound complications, unplanned reoperation and death. Patient characteristics were compared using chi-squared testing and odds ratios for readmission were calculated using multivariate logistic regression. RESULTS: Of the 1125 patients (79% female, median age 15 years), 122 (11%) were discharged on the day of surgery. Total or near-total thyroidectomy represented the majority of operations (714, 63.5%) and patients undergoing these operations were less likely to be discharged on the same day as surgery compared to those undergoing thyroid lobectomy (4.3 vs. 22.1%, P < 0.001). Twenty-nine patients were readmitted within 30 days (3 in the same day group, 26 in the later group). There was no difference in the odds of readmission between the two groups (adjusted odds ratio in SDD compared to later discharge 1.04 [95% CI 0.29-3.75, P = 0.96; readmission rate, 2.46 vs. 2.59%). Wound complications were reported in two patients, both in the later discharge group. CONCLUSION: Same-day discharge in pediatric patients undergoing thyroidectomy is not associated with an increase in 30-day readmissions or wound complications when compared to patients discharged 1 or 2 days after surgery. In selected patients, SDD may be an appropriate alternative to traditional overnight stay.


Asunto(s)
Alta del Paciente , Readmisión del Paciente , Adulto , Niño , Bases de Datos Factuales , Femenino , Humanos , Recién Nacido , Masculino , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Factores de Riesgo , Tiroidectomía
9.
Psychosom Med ; 82(7): 699-707, 2020 09.
Artículo en Inglés | MEDLINE | ID: mdl-32868537

RESUMEN

OBJECTIVE: This study aimed to determine if episodic future thinking (EFT) can decrease delay discounting (DD) among adults with prediabetes both in and out of the laboratory. DD measures how much the value of a reinforcer decreases as a function of the delay to receive it. METHODS: Adults with prediabetes (n = 67) completed a three-session study. At session 1, baseline measures (including DD) were collected. At sessions 2 and 3, participants were prompted to engage in either EFT or control episodic thinking (CET) while completing DD and other measures. In addition, between the completion of sessions 2 and 3, participants engaged in EFT or CET at home and completed DD tasks remotely via smartphones or other Internet-connected devices. RESULTS: Results showed significant -1.2759 (-20.24%) reductions in DD in the EFT group compared with a + 0.0287 (+0.46%) DD increase in the CET group (p = .0149) in the laboratory; and -0.4095 (-8.85%) reduction in DD in the EFT group compared with a + 0.2619 (+5.64%) increase in the CET group (p = .011) at home. Working memory (measured by Backwards Corsi and Digit Span) was found to moderate the effects of EFT on some measures of DD. EFT did not change measures from the food purchase task or a food ad libitum procedure. CONCLUSIONS: Results show that EFT decreases DD in and out of the laboratory and supports the further exploration of EFT as an intervention for prediabetes and related chronic diseases. CLINICAL TRIAL REGISTRATION: NCT03664726.


Asunto(s)
Descuento por Demora , Memoria Episódica , Estado Prediabético , Adulto , Predicción , Humanos , Laboratorios , Pensamiento
10.
J Behav Med ; 42(5): 851-859, 2019 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-30903441

RESUMEN

The majority of people with prediabetes transition to type 2 diabetes. Weight gain is a known predictor of increasing the risk of diabetes, but another reason may be a focus on immediate rewards and discounting of the future. Delay discounting (DD: devaluation of future consequences) is related to obesity and poor glycemic control in persons with type 2 diabetes. This study was designed to assess whether changes in DD are associated with HbA1c change beyond BMI change in individuals with prediabetes. Hierarchical regression showed changes in BMI (p = 0.008) and the $1000 DD task (p = 0.04) were associated with HbA1c change beyond demographic characteristics, with the full model accounting for 25.8% of the variance. Those with greater BMI increases and greater increases in discounting of the future showed the greatest increases in HbA1c. DD represents a novel target to prevent progression from prediabetes to type 2 diabetes.


Asunto(s)
Descuento por Demora , Hemoglobina Glucada/metabolismo , Estado Prediabético/metabolismo , Estado Prediabético/psicología , Índice de Masa Corporal , Progresión de la Enfermedad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Obesidad/complicaciones , Valor Predictivo de las Pruebas
11.
Clin Obstet Gynecol ; 62(2): 373-387, 2019 06.
Artículo en Inglés | MEDLINE | ID: mdl-31026231

RESUMEN

Thyroid hormone is essential for normal fetal brain development in utero and for the first 2 years of life. The developing fetus is initially reliant upon maternal thyroid hormones that cross the placenta, until the fetal thyroid begins to supply thyroid hormone for the fetus. Maternal thyroid status affects fetal thyroid function and maternal thyroid dysfunction can have a significant impact on the fetus and neonate. There are also several neonatal factors that can influence thyroid function. Here, we describe thyroid function in the fetus and neonate and discuss the most common thyroid disorders seen in neonates.


Asunto(s)
Enfermedades del Prematuro/terapia , Enfermedades de la Tiroides/congénito , Enfermedades de la Tiroides/terapia , Efectos Colaterales y Reacciones Adversas Relacionados con Medicamentos , Desarrollo Fetal , Humanos , Recién Nacido , Recien Nacido Prematuro , Yodo/efectos adversos , Yodo/metabolismo , Tamizaje Neonatal , Trastornos del Neurodesarrollo/prevención & control , Enfermedades de la Tiroides/etiología , Glándula Tiroides/embriología , Glándula Tiroides/fisiología , Hormonas Tiroideas/sangre
13.
Immunol Invest ; 44(8): 803-16, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26575465

RESUMEN

A significant number of individuals are affected by autoimmune diseases, which are caused by aberrant recognition of self by the immune system. A wide variety of cells and organ systems are targets of pathologic activation of the immune mediators. Effective and safe therapies aimed at managing the chronic inflammatory aspect of many autoimmune diseases remain elusive. This review will focus on the available interventions and discuss the future of the field to prevent organ destruction by the autoimmune process.


Asunto(s)
Antiinflamatorios/uso terapéutico , Enfermedades Autoinmunes/terapia , Factores Biológicos/uso terapéutico , Citocinas/metabolismo , Linfocitos T/efectos de los fármacos , Animales , Enfermedades Autoinmunes/inmunología , Autoinmunidad/efectos de los fármacos , Citocinas/inmunología , Humanos , Inmunidad/efectos de los fármacos , Especificidad de Órganos , Linfocitos T/inmunología
14.
J Perinatol ; 2024 May 20.
Artículo en Inglés | MEDLINE | ID: mdl-38769337

RESUMEN

OBJECTIVE: To determine whether random cortisol levels obtained in neonates to assess for secondary adrenal insufficiency (AI) after prolonged steroid exposure are predictive of central AI. STUDY DESIGN: Data were collected on neonates born 2017-2022 who received ≥10 consecutive days of systemic steroids and had cortisol measured thereafter. Data were then collected on whether those neonates developed signs of AI or had a failed adrenocorticotropic hormone (ACTH) stimulation test. RESULTS: Of the 71 cortisol levels (in 67 neonates) that were analyzed, there was no difference in cortisol levels between neonates who developed AI (median cortisol level of 6.5 mcg/dl) and those who did not (median of 9.2 mcg/dl), or between those who failed their ACTH stimulation test or passed it, using Wilcoxon ranked sum tests. CONCLUSION: These findings demonstrate that cortisol levels may not be helpful in identifying AI in neonates exposed to prolonged steroids.

15.
Cureus ; 15(3): e36629, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-37155438

RESUMEN

The pilot study evaluated contingency management (CM) for family-based obesity therapy (FBT). The secondary outcome assessed the association of the hepatic transient electrography (TE) parameters, including the controlled attenuation parameter (CAP) and liver stiffness (LSM), and changes in liver function blood tests and BMI changes in youth involved in intensive FBT. It included youth-parent dyads from an urban pediatric center randomized to weekly behavioral therapy (BT, n= 4) who received fixed financial compensation for attendance, or BT+CM (n= 5) who received an escalating monetary reward for weight loss. At week 30, all youth and parents had weight-loss trends without significant differences between groups. While the TE measures and blood tests were normal in the youth at baseline and week 30, the CAP changes correlated with BMI changes (R2= 0.86, P< 0.001) and LSM changes with alanine aminotransferase changes (R2= 0.79, P=0.005). In conclusion, BT+CM did not significantly add to the BMI improvement seen with BT alone in youth and their parents. However, in youth with obesity and normal liver blood tests, TE may be useful for monitoring changes in fatty liver disease.

16.
Biomedicines ; 11(10)2023 Sep 27.
Artículo en Inglés | MEDLINE | ID: mdl-37893019

RESUMEN

This study analyzed genetic risk assessments in patients undergoing bariatric surgery to serve as a predictive factor for weight loss parameters 1 year after the operation. Thirty (30) patients were assessed for Genetic Addiction Risk Severity (GARS), which analyzes neurogenetic polymorphisms involved in addiction and reward deficiency. Genetic and psychosocial data collected before the operation were correlated with weight loss data, including changes in weight, body mass index (BMI), and percent of expected weight loss (%EWL). Results examined correlations between individual gene risk alleles, 1-year body weight data, and psychosocial trait scores. Spearman's correlations revealed that the OPRM1 (rs1799971) gene polymorphism had significant negative correlation with 1-year weight (rs = -0.4477, p < 0.01) and BMI (rs = -0.4477, p < 0.05). In addition, the DRD2 risk allele (rs1800497) was correlated negatively with BMI at 1 year (rs = -0.4927, p < 0.05), indicating that one risk allele copy was associated with lower BMI. However, this allele was positively correlated with both ∆Weight (rs = 0.4077, p < 0.05) and %EWL (rs = 0.5521, p < 0.05) at 1 year post-surgery. Moreover, the overall GARS score was correlated with %EWL (rs = 0.4236, p < 0.05), ∆Weight (rs = 0.3971, p < 0.05) and ∆BMI (rs = 0.3778, p < 0.05). Lastly, Food Cravings Questionnaire (FCQ) scores were negatively correlated with %EWL (rs = -0.4320, p < 0.05) and ∆Weight at 1 year post-surgery (rs = -0.4294, p < 0.05). This suggests that individuals with a higher genetic addiction risk are more responsive to weight loss treatment, especially in the case of the DRD2 polymorphism. These results should translate clinically to improve positivity and attitude related to weight management by those individuals born with the risk alleles (rs1800497; rs1799971).

17.
J Pers Med ; 13(7)2023 Jul 20.
Artículo en Inglés | MEDLINE | ID: mdl-37511777

RESUMEN

It is predicted that by 2030, globally, an estimated 2.16 billion adults will be overweight, and 1.12 billion will be obese. This study examined genetic data regarding Reward Deficiency Syndrome (RDS) to evaluate their usefulness in counselling patients undergoing bariatric surgery and gathered preliminary data on the potential use in predicting short term (6-month) weight loss outcomes. Methods: Patients undergoing bariatric surgery (n = 34) were examined for Genetic Addiction Risk Severity (GARS) [measures the presence of risk alleles associated with RDS]; as well as their psychosocial traits (questionnaires). BMI changes and sociodemographic data were abstracted from Electronic Health Records. Results: Subjects showed ∆BMI (M = 10.0 ± 1.05 kg/m2) and a mean % excess weight loss (56 ± 13.8%). In addition, 76% of subjects had GARS scores above seven. The homozygote risk alleles for MAO (rs768062321) and DRD1 (rs4532) showed a 38% and 47% prevalence among the subjects. Of the 11 risk alleles identified by GARS, the DRD4 risk allele (rs1800955), was significantly correlated with change in weight and BMI six months post-surgery. We identified correlations with individual risk alleles and psychosocial trait scores. The COMT risk allele (rs4680) showed a negative correlation with EEI scores (r = -0.4983, p < 0.05) and PSQI scores (r = -0.5482, p < 0.05). The GABRB3 risk allele (rs764926719) correlated positively with EEI (r = 0.6161, p < 0.01) and FCQ scores (r = 0.6373, p < 0.01). The OPRM1 risk allele showed a positive correlation with the DERS score (r = 0.5228, p < 0.05). We also identified correlations between DERS and BMI change (r = 0.61; p < 0.01). Conclusions: These data support the potential benefit of a personalized medicinal approach inclusive of genetic testing and psychosocial trait questionnaires when counselling patients with obesity considering bariatric surgery. Future research will explore epigenetic factors that contribute to outcomes of bariatric surgery.

18.
Cell Rep Med ; 4(11): 101261, 2023 11 21.
Artículo en Inglés | MEDLINE | ID: mdl-37918404

RESUMEN

In preclinical models, α-difluoromethylornithine (DFMO), an ornithine decarboxylase (ODC) inhibitor, delays the onset of type 1 diabetes (T1D) by reducing ß cell stress. However, the mechanism of DFMO action and its human tolerability remain unclear. In this study, we show that mice with ß cell ODC deletion are protected against toxin-induced diabetes, suggesting a cell-autonomous role of ODC during ß cell stress. In a randomized controlled trial (ClinicalTrials.gov: NCT02384889) involving 41 recent-onset T1D subjects (3:1 drug:placebo) over a 3-month treatment period with a 3-month follow-up, DFMO (125-1,000 mg/m2) is shown to meet its primary outcome of safety and tolerability. DFMO dose-dependently reduces urinary putrescine levels and, at higher doses, preserves C-peptide area under the curve without apparent immunomodulation. Transcriptomics and proteomics of DFMO-treated human islets exposed to cytokine stress reveal alterations in mRNA translation, nascent protein transport, and protein secretion. These findings suggest that DFMO may preserve ß cell function in T1D through islet cell-autonomous effects.


Asunto(s)
Diabetes Mellitus Tipo 1 , Humanos , Ratones , Animales , Diabetes Mellitus Tipo 1/tratamiento farmacológico , Ornitina Descarboxilasa/genética , Ornitina Descarboxilasa/metabolismo , Inhibidores de la Ornitina Descarboxilasa/farmacología , Eflornitina/farmacología , Eflornitina/uso terapéutico , Putrescina/metabolismo
19.
Curr Opin Endocrinol Diabetes Obes ; 29(4): 386-391, 2022 08 01.
Artículo en Inglés | MEDLINE | ID: mdl-35799459

RESUMEN

PURPOSE OF REVIEW: Type 1 diabetes (T1D) is the most common chronic disease of childhood presenting a significant burden, both in terms of day-to-day medical management and lifelong care. Studies aligned with diverse strategies to prevent or modify the course of T1D are reviewed. RECENT FINDINGS: The diagnosis of T1D precedes the classic clinical presentation when insulin dependence develops. With an increased understanding of the pathophysiology of the autoimmune process leading to T1D, treatment strategies to prevent the development of autoimmunity and/or modify the immune response have been trialed in persons at risk for developing the disease. Interventions prior to insulin dependence or very early after clinical diagnosis show some promise both in preventing disease onset and prolonging beta-cell insulin production. SUMMARY: Significant progress has been made in the treatment of T1D. However, suboptimal glycemic control remains a challenge impacting overall health and quality of life for patients with this chronic disease. Although physicians and basic sciences investigators continue to pursue the prevention of the autoimmune process, the advent of disease-modifying agents is a promising strategy. Further studies are needed to ensure that insulin preservation can be achieved longer term.


Asunto(s)
Diabetes Mellitus Tipo 1 , Células Secretoras de Insulina , Autoinmunidad , Humanos , Insulina/uso terapéutico , Calidad de Vida
20.
Front Endocrinol (Lausanne) ; 12: 669954, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-33995287

RESUMEN

Background: Diabetic nephropathy (DN) is one of the most common microvascular complications in type 1 diabetes Mellitus (T1D). Urinary markers of renal damage or oxidative stress may signal early stages of DN. The association of these markers with blood pressure (BP) patterns and glycemic variability (GV) in children is yet to be explored. Methods: Subjects between the ages of 10 and 21 years with T1D were enrolled. Continuous glucose monitoring (CGM) and ambulatory blood pressure monitoring (ABPM) were performed on each subject. Urine samples were collected and analyzed for albumin, creatinine, neutrophil gelatinase-associated lipocalin (NGAL) and pentosidine. Results: The study included 21 subjects (62% female) with median age of 16.8 (IQR: 14.5, 18.9). Median HbA1C was 8.4 (IQR: 7.5, 9.3). While microalbuminuria was negative in all but one case (4.8%), urinary NGAL/Cr and pentosidine/Cr ratios were significantly elevated (P<0.001) in diabetic patients despite having normal microalbuminuria, and they correlated significantly with level of microalbumin/Cr (r=0.56 [CI: 0.17, 0.8] and r=0.79 [CI: 0.54, 0.91], respectively). Using ABPM, none had hypertension, however, poor nocturnal systolic BP dipping was found in 48% of cases (95% CI: 28-68%). Urinary NGAL/Cr negatively correlated with nocturnal SBP dipping (r=-0.47, CI: -0.76, -0.03). Urine NGAL/Cr also showed a significant negative correlation with HbA1c measurements, mean blood glucose, and high blood glucose index (r=-0.51 [CI: -0.78, -0.09], r=-0.45 [CI: -0.74, -0.03], and r=-0.51 [CI: -0.77, -0.1], respectively). Median urinary NGAL/Cr and pentosidine/Cr ratios were higher in the high GV group but were not significantly different. Discussion: This pilot study explores the role of ABPM and urinary markers of tubular health and oxidative stress in early detection of diabetic nephropathy. GV may play a role in the process of this diabetic complication.


Asunto(s)
Biomarcadores/sangre , Diabetes Mellitus Tipo 1/complicaciones , Nefropatías Diabéticas/diagnóstico , Diagnóstico Precoz , Adolescente , Adulto , Glucemia/análisis , Niño , Estudios Transversales , Nefropatías Diabéticas/sangre , Nefropatías Diabéticas/etiología , Femenino , Estudios de Seguimiento , Hemoglobina Glucada/análisis , Humanos , Masculino , Proyectos Piloto , Pronóstico , Adulto Joven
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