Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 12 de 12
Filtrar
Mais filtros

Bases de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Allergy ; 78(4): 995-1006, 2023 04.
Artigo em Inglês | MEDLINE | ID: mdl-36263451

RESUMO

BACKGROUND: The effectiveness of emollients for preventing atopic dermatitis/eczema is controversial. The Barrier Enhancement for Eczema Prevention trial evaluated the effects of daily emollients during the first year of life on atopic dermatitis and atopic conditions to age 5 years. METHODS: 1394 term infants with a family history of atopic disease were randomized (1:1) to daily emollient plus standard skin-care advice (693 emollient group) or standard skin-care advice alone (701 controls). Long-term follow-up at ages 3, 4 and 5 years was via parental questionnaires. Main outcomes were parental report of a clinical diagnosis of atopic dermatitis and food allergy. RESULTS: Parents reported more frequent moisturizer application in the emollient group through to 5 years. A clinical diagnosis of atopic dermatitis between 12 and 60 months was reported for 188/608 (31%) in the emollient group and 178/631 (28%) in the control group (adjusted relative risk 1.10, 95% confidence interval 0.93 to 1.30). Although more parents in the emollient group reported food reactions in the previous year at 3 and 4 years, cumulative incidence of doctor-diagnosed food allergy by 5 years was similar between groups (92/609 [15%] emollients and 87/632 [14%] controls, adjusted relative risk 1.11, 95% confidence interval 0.84 to 1.45). Findings were similar for cumulative incidence of asthma and hay fever. CONCLUSIONS: Daily emollient application during the first year of life does not prevent atopic dermatitis, food allergy, asthma or hay fever.


Assuntos
Asma , Dermatite Atópica , Eczema , Hipersensibilidade Alimentar , Rinite Alérgica Sazonal , Lactente , Humanos , Pré-Escolar , Dermatite Atópica/diagnóstico , Dermatite Atópica/epidemiologia , Dermatite Atópica/prevenção & controle , Emolientes/uso terapêutico , Rinite Alérgica Sazonal/tratamento farmacológico , Hipersensibilidade Alimentar/prevenção & controle , Asma/tratamento farmacológico , Resultado do Tratamento
2.
Adv Neonatal Care ; 21(1): 68-76, 2021 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-32384331

RESUMO

BACKGROUND: Timely identification of esophageal atresia is challenging. Diagnosis may be suspected antenatally with a combination of polyhydramnios, associated with a small or absent stomach bubble or other anomalies. Esophageal atresia can be suspected postnatally in the presence of tachypnea, increased oral secretions, and an inability to advance an orogastric tube. Failure to recognize an esophageal atresia can have life-threatening implications. CLINICAL FINDINGS: A 5-day-old infant with a history of failure to thrive and respiratory distress presented in a community emergency department following a prolonged apnea associated with a breastfeed. PRIMARY DIAGNOSIS: Delayed postnatal diagnosis of esophageal atresia and tracheoesophageal fistula. INTERVENTIONS: During stabilization in the emergency department, a nasogastric tube was placed to decompress the stomach. A subsequent chest and abdominal radiograph identified the nasogastric tube curled in the upper esophagus, confirming an esophageal atresia. The abdominal radiograph demonstrated gaseous distension, suggesting the presence of a distal tracheoesophageal fistula. OUTCOMES: The neonate had a primary esophageal anastomosis and fistula ligation in a surgical neonatal unit. He was discharged home at 29 days of life. PRACTICE RECOMMENDATIONS: Understanding the challenges of an antenatal diagnosis and awareness of postnatal presentation with a view to improving postnatal recognition and better-quality outcomes for infants with an esophageal atresia and tracheoesophageal fistula.


Assuntos
Atresia Esofágica , Fístula Traqueoesofágica , Diagnóstico Tardio , Atresia Esofágica/diagnóstico , Atresia Esofágica/cirurgia , Feminino , Humanos , Recém-Nascido , Ligadura , Masculino , Gravidez , Diagnóstico Pré-Natal , Fístula Traqueoesofágica/diagnóstico , Fístula Traqueoesofágica/cirurgia
3.
Pediatr Surg Int ; 37(4): 503-509, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33388963

RESUMO

PURPOSE: Preoperative echocardiography is used routinely in neonates with esophageal atresia to identify patients in whom congenital cardiac disease will impact upon anesthetic and surgical decision-making. We aimed to determine the suitability of selective preoperative echocardiography. METHODS: We performed a single-center retrospective review of neonates with esophageal atresia over 6 years (2010-2015) at our tertiary pediatric institution. Data included preoperative clinical examination, chest x-ray, and echocardiography. Endpoints were cardiovascular, respiratory, radiological, and echocardiography findings. Selective strategies were assessed using sensitivity, specificity, positive predictive value, and negative predictive value. RESULTS: We identified 115 neonates with esophageal atresia. All underwent preoperative echocardiography. Cardiac defects were identified in 49/115 (43%) (major 9/115, moderate 4/115). Sensitivity, specificity, positive predictive value, and negative predictive value of abnormal clinical and radiologic assessment for major and moderate cardiac defects were 92%, 25%, 13%, 96%; for clinical examination alone were 92%, 25%, 14%, 96%; for absence of murmur, cyanosis, and abnormal respiratory examination were 92%, 28%, 13%, 97%. Selective strategies reduce echocardiograms performed by 22%. CONCLUSION: Selective strategies allow for identification of neonates with esophageal atresia who may have deferral of echocardiogram unill after surgery. Selection may improve timeliness of care and resource utilization, without compromising patient safety.


Assuntos
Ecocardiografia , Atresia Esofágica/diagnóstico por imagem , Cardiopatias Congênitas/diagnóstico por imagem , Cuidados Pré-Operatórios/métodos , Feminino , Humanos , Recém-Nascido , Masculino , Estudos Retrospectivos , Fístula Traqueoesofágica/cirurgia
4.
J Pediatr ; 219: 70-75, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-31952847

RESUMO

OBJECTIVE: To describe esophageal atresia mortality rates and their associations in our cohort. STUDY DESIGN: Patients with esophageal atresia, managed at The Royal Children's Hospital, Melbourne (1980-2018), who subsequently died, were retrospectively identified from the prospective Nate Myers Oesophageal Atresia database. Data collected included patient and maternal demographics, vertebral anomalies, anorectal malformations, cardiovascular anomalies, tracheoesophageal fistula, renal anomalies, and limb defects (VACTERL) associations, mortality risk factors, and preoperative, operative, and postoperative findings. Mortality before discharge was defined as death during the initial admission. RESULTS: A total of 88 of the 650 patients (13.5%) died during the study period; mortality before discharge occurred in 66 of the 88 (75.0%); mortality after discharge occurred in 22 of the 88 (25.0%). Common causes of mortality before discharge were palliation for respiratory anomalies (15/66 [22.7%]), associated syndromes (11/66 [16.7%]), and neurologic anomalies (10/66 [15.2%]). The most common syndrome leading to palliation was trisomy 18 (7/66 [10.6%]). Causes of mortality after discharge had available documentation for 17 of 22 patients (77.3%). Common causes were respiratory compromise (6/17 [35.3%]), sudden unexplained deaths (6/17 [35.3%]), and Fanconi anemia (2/17 [11.8%]). Of the patients discharged from hospital, 22 of 584 (3.8%) subsequently died. There was no statistical difference in VACTERL association between mortality before discharge (31/61 [50.8%]) and mortality after discharge (11/20 [55.0%]), nor in incidence of twins between mortality before discharge (8/56 [14.3%]) and mortality after discharge (2/18 [11.1%]). CONCLUSIONS: We identified predictors of mortality in patients with esophageal atresia in a large prospective cohort. Parents of children with esophageal atresia must be counselled appropriately as to the likelihood of death after discharge from hospital.


Assuntos
Atresia Esofágica/mortalidade , Bases de Dados Factuais , Atresia Esofágica/classificação , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Alta do Paciente/estatística & dados numéricos , Estudos Retrospectivos , Medição de Risco
5.
J Pediatr ; 198: 60-66, 2018 07.
Artigo em Inglês | MEDLINE | ID: mdl-29628411

RESUMO

OBJECTIVES: Fundoplication is commonly performed in patients with a history of esophageal atresia (EA), however, the success of this surgery is reduced, as reflected by an increased rate of redo fundoplication. We aimed to determine whether EA impacts the prevalence of fundoplication, its timing, and performance of a redo operation. STUDY DESIGN: A single-center, retrospective review of all patients undergoing fundoplication over a 20-year period (1994-2013) was performed. Redo fundoplication was used as a surrogate for surgical failure. RESULTS: A total of 767 patients (patients with EA 85, those who did not have EA 682) underwent fundoplication during the study period. Median age (months) at primary fundoplication was lower in patients with EA (7.2 vs those who did not have EA 23.3; P < .001). Redo fundoplication rates between groups were not significantly different (EA 11/85 vs 53/682; P = .14). Median time (months) between primary and redo fundoplication was greater in patients with EA (36.2 vs 11.7; P = .03). CONCLUSIONS: Contrary to popular belief, the incidence of redo fundoplication was not significantly increased in patients with a history of EA. However, patients with EA underwent fundoplication at younger ages, which may be related to early life-threatening events in these patients. These results inform perioperative counseling, and highlight the importance of sustained surgical follow-up in patients with EA.


Assuntos
Atresia Esofágica/complicações , Fundoplicatura , Refluxo Gastroesofágico/cirurgia , Pré-Escolar , Feminino , Seguimentos , Refluxo Gastroesofágico/etiologia , Humanos , Lactente , Laparoscopia , Masculino , Reoperação , Estudos Retrospectivos , Resultado do Tratamento
6.
Health Technol Assess ; 28(29): 1-116, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-39021147

RESUMO

Background: Atopic eczema is a common childhood skin problem linked with asthma, food allergy and allergic rhinitis that impairs quality of life. Objectives: To determine whether advising parents to apply daily emollients in the first year can prevent eczema and/or other atopic diseases in high-risk children. Design: A United Kingdom, multicentre, pragmatic, two-arm, parallel-group randomised controlled prevention trial with follow-up to 5 years. Setting: Twelve secondary and four primary care centres. Participants: Healthy infants (at least 37 weeks' gestation) at high risk of developing eczema, screened and consented during the third trimester or post delivery. Interventions: Infants were randomised (1 : 1) within 21 days of birth to apply emollient (Doublebase Gel®; Dermal Laboratories Ltd, Hitchin, UK or Diprobase Cream®) daily to the whole body (excluding scalp) for the first year, plus standard skin-care advice (emollient group) or standard skin-care advice only (control group). Families were not blinded to allocation. Main outcome measures: Primary outcome was eczema diagnosis in the last year at age 2 years, as defined by the UK Working Party refinement of the Hanifin and Rajka diagnostic criteria, assessed by research nurses blinded to allocation. Secondary outcomes up to age 2 years included other eczema definitions, time to onset and severity of eczema, allergic rhinitis, wheezing, allergic sensitisation, food allergy, safety (skin infections and slippages) and cost-effectiveness. Results: One thousand three hundred and ninety-four newborns were randomised between November 2014 and November 2016; 693 emollient and 701 control. Adherence in the emollient group was 88% (466/532), 82% (427/519) and 74% (375/506) at 3, 6 and 12 months. At 2 years, eczema was present in 139/598 (23%) in the emollient group and 150/612 (25%) in controls (adjusted relative risk 0.95, 95% confidence interval 0.78 to 1.16; p = 0.61 and adjusted risk difference -1.2%, 95% confidence interval -5.9% to 3.6%). Other eczema definitions supported the primary analysis. Food allergy (milk, egg, peanut) was present in 41/547 (7.5%) in the emollient group versus 29/568 (5.1%) in controls (adjusted relative risk 1.47, 95% confidence interval 0.93 to 2.33). Mean number of skin infections per child in the first year was 0.23 (standard deviation 0.68) in the emollient group versus 0.15 (standard deviation 0.46) in controls; adjusted incidence rate ratio 1.55, 95% confidence interval 1.15 to 2.09. The adjusted incremental cost per percentage decrease in risk of eczema at 2 years was £5337 (£7281 unadjusted). No difference between the groups in eczema or other atopic diseases was observed during follow-up to age 5 years via parental questionnaires. Limitations: Two emollient types were used which could have had different effects. The median time for starting emollients was 11 days after birth. Some contamination occurred in the control group (< 20%). Participating families were unblinded and reported on some outcomes. Conclusions: We found no evidence that daily emollient during the first year of life prevents eczema in high-risk children. Emollient use was associated with a higher risk of skin infections and a possible increase in food allergy. Emollient use is unlikely to be considered cost-effective in this context. Future research: To pool similar studies in an individual patient data meta-analysis. Trial registration: This trial is registered as ISRCTN21528841. Funding: This award was funded by the National Institute for Health and Care Research (NIHR) Health Technology Assessment programme (NIHR award ref: 12/67/12) and is published in full in Health Technology Assessment; Vol. 28, No. 29. See the NIHR Funding and Awards website for further award information.


Eczema is a troublesome itchy skin condition affecting 1 in 5 children and 1 in 10 UK adults. There is no cure and affected children are more likely to develop food allergies. We wanted to see if we could prevent eczema by protecting the skin of babies at higher risk of developing eczema (with an immediate relative with eczema, asthma or hay fever) with moisturisers used to treat dry skin. Previous research suggested that protecting the skin barrier might also prevent food allergy. One thousand three hundred and ninety-four families took part in a study; half of them were asked to apply moisturiser every day to their newborn baby for the first year and half to look after their baby's skin in the normal way. At the age of 2 years, we did not see any difference in how common eczema was between the two groups: 23% had eczema in the moisturiser group and 25% in the normal care group. It did not matter how we defined eczema ­ whether examined by a researcher or parent report. We did not find any differences in related conditions like asthma or hay fever either. We found that children using moisturisers had seen their doctor slightly more often for mild skin infections. There was a hint that food allergy might have been increased in the moisturiser group, but there was not enough data to be sure. We followed up the children to age 5 years, but we still did not find any benefits from using moisturisers in early life. Since this study, other similar research has been done using newer types of moisturisers, but their results are the same. This study shows that using daily moisturisers on healthy babies with a high risk of eczema does not prevent eczema. It is one less thing for busy families to worry about.


Assuntos
Análise Custo-Benefício , Eczema , Emolientes , Humanos , Emolientes/uso terapêutico , Feminino , Masculino , Lactente , Recém-Nascido , Eczema/prevenção & controle , Reino Unido , Pré-Escolar , Anos de Vida Ajustados por Qualidade de Vida , Qualidade de Vida , Avaliação da Tecnologia Biomédica , Dermatite Atópica/prevenção & controle
7.
J Pediatr Surg ; 56(4): 686-691, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-32807528

RESUMO

BACKGROUND: The long-term outcomes of H-type tracheoesophageal fistula (TOF), an uncommon variant of esophageal atresia/tracheoesophageal fistula (OA/TOF), are rarely described in the literature. We reviewed our institutional experience of 70 years. METHODS: The Nate Myers Oesophageal Atresia Database was queried for patients with an H-type TOF (1948-2017). Data included presentation, diagnostic workup, surgical management, and outcomes. RESULTS: Of 1088 patients with OA/TOF, 56 (5.1%) had an H-type TOF. The most common presenting symptoms were cyanotic episodes (68%), choking with feeds (52%), and aspiration pneumonitis (46%). The majority (82%) were symptomatic in the first week of life. Coexisting congenital anomalies were present in 46%: cardiac (13/56, 23%), genitourinary (10/56, 18%), and vertebral/skeletal (9/56, 16%). Patients were consistently diagnosed with prone contrast tube esophagogram (77% sensitivity on the first study and 96% after a second study). The fistula was most commonly approached through a right cervical collar incision. Right vocal cord palsy occurred in 22%, with one case of bilateral palsies. Other complications included leak (5.6%), recurrence (9.3%), stricture (1.9%), and diverticulum (1.9%). Although there was a trend towards a lower recurrence rate when interposition material was used, this was not statistically significant (3.3% vs 16.7%, p = 0.16). Survival in operative cases was 98.2%, and when all diagnosed cases were considered was 89.3%. CONCLUSIONS: We have reported the largest single-center series of H-type TOF. Diagnosis is challenging, and surgical morbidity remains high. Despite this, long-term outcomes are favorable. LEVEL OF EVIDENCE: IV.


Assuntos
Atresia Esofágica , Fístula Traqueoesofágica , Criança , Atresia Esofágica/complicações , Atresia Esofágica/cirurgia , Hospitais , Humanos , Estudos Retrospectivos , Coluna Vertebral , Fístula Traqueoesofágica/epidemiologia , Fístula Traqueoesofágica/cirurgia
8.
Pediatrics ; 147(5)2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33911029

RESUMO

BACKGROUND AND OBJECTIVES: Presence of a syndrome (or association) is predictive of poor survival in esophageal atresia (EA). However, most reports rely on historical patient outcomes, limiting their usefulness when estimating risk for neonates born today. We hypothesized improved syndromic EA survival due to advances in neonatal care. METHODS: A retrospective single-center review of survival in 626 consecutive patients with EA from 1980 to 2017 was performed. Data were collected for recognized risk factors: preterm delivery; birth weight <1500 g; major cardiac disease; vertebral defects, anal atresia, cardiac defects, tracheoesophageal fistula, renal anomalies, and limb abnormalities (VACTERL); and non-VACTERL syndromes. Cox proportional hazards regression models were used to evaluate temporal trends in survival with respect to year of birth and syndromic EA. RESULTS: Overall, 87% of 626 patients with EA survived, ranging from 82% in the 1980s to 91% in the 2010s. After adjusting for confounders, syndromic EA survival did not improve during the study, with no association found between year of birth and survival (hazard ratio [HR] 0.98, 95% confidence interval [CI]: 0.95-1.01). Aside from lethal non-VACTERL syndromes, patients with nonlethal non-VACTERL syndromes (HR 6.85, 95% CI: 3.50-13.41) and VACTERL syndrome (HR 3.02, 95% CI: 1.66-5.49) had a higher risk of death than those with nonsyndromic EA. CONCLUSIONS: Survival of patients with syndromic EA has not improved, and patients with non-VACTERL syndromes have the highest risk of death. Importantly, this is independent of syndrome lethality, birth weight, and cardiac disease. This contemporary survival assessment will enable more accurate perinatal counseling of parents of patients with syndromic EA.


Assuntos
Atresia Esofágica/mortalidade , Feminino , Humanos , Recém-Nascido , Masculino , Estudos Retrospectivos , Taxa de Sobrevida/tendências , Síndrome
9.
J Pediatr Surg ; 55(11): 2329-2334, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32143903

RESUMO

AIM: To describe the burden of esophageal dilatations in patients following esophageal atresia (EA) repair. METHOD: A retrospective review was performed at The Royal Children's Hospital, Melbourne, of all neonates undergoing operative repair for EA over a 17-year period (1999-2015). Stricture was defined by radiological and/or intra-operative findings of narrowing at the esophageal anastomosis. Data recorded included EA type, perinatal details, operative approach, esophageal anastomosis outcome, dilatation requirement, and survival. Key endpoints were anastomotic leakage and tension, esophageal dilatation technique, dilatation frequency, fundoplication, and complications. RESULTS: During the study period, 287 newborn EA patients were admitted, of which 258 underwent operative repair and survived to primary discharge. Excluding 11 patients with isolated tracheoesophageal fistula, 247 patients were included in the final analysis. Intra-operative anastomotic tension was documented in 41/247 (16.6%), anastomotic leak occurred in 48/247 (19.4%), and fundoplication was performed in 37/247 (15.0%). Dilatations were performed in 149/247 (60.3%). Techniques included bougie-alone (92/149, 61.7%), combination of bougie and balloon (51/149, 34.2%), and balloon-alone (6/149, 4.0%). These patients underwent 1128 dilatations; median number of dilatations per patient was 4 (interquartile range 2-8). Long-gap EA and anastomotic tension were risk factors (p < 0.01) for multiple dilatations. Complications occurred in 13/1128 (1.2%) dilatation episodes: 11/13 esophageal perforation, 2/13 clinically significant aspiration. Perforations were rare events in both balloon (6/287, 2.1%) and bougie dilatations (4/841, 0.5%); one patient had a perforation from guidewire insertion. CONCLUSIONS: Esophageal dilatation occurred in a majority of EA patients. Long-gap EA was associated with an increased burden of esophageal dilatation. Perforations were rare events in balloon and bougie dilatations. TYPE OF STUDY: Original article - retrospective review. LEVEL OF EVIDENCE: II.


Assuntos
Dilatação , Atresia Esofágica , Estenose Esofágica , Esofagoplastia , Anastomose Cirúrgica , Atresia Esofágica/cirurgia , Estenose Esofágica/epidemiologia , Estenose Esofágica/etiologia , Humanos , Recém-Nascido , Complicações Pós-Operatórias/epidemiologia , Estudos Retrospectivos , Resultado do Tratamento
10.
Aust J Rural Health ; 16(2): 92-9, 2008 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-18318851

RESUMO

OBJECTIVE: To assess physical activity (PA) behaviours of adults in rural Australia. DESIGN AND SETTING: Three cross-sectional surveys in the Greater Green Triangle area covering the south-east of South Australia (Limestone Coast), and south-west (Corangamite Shire) and north-west (Wimmera) of Victoria during 2004-2006. PARTICIPANTS: A total of 1546 persons, aged 25- 74 years, randomly selected from the electoral roll. MAIN OUTCOME MEASURES: Overall PA, leisure-time PA, occupational PA, active commuting and moderate-to-vigorous PA. RESULTS: Approximately 80% of participants, more women than men, engaged in 30 minutes or more of daily PA. Only 30% (95% CI 26.3, 33.0) of men and 21% (95% CI 18.3, 23.9) of women did moderate-to-vigorous PA for at least 20-30 minutes four or more times a week. In leisure time, most participants were moderately active; almost one-fifth were inactive and another fifth highly active. Two-thirds of men engaged in high-level occupational PA, compared with one-sixth of women. Only 30% of participants actively commuted to work. There was a tendency for a positive association between income level and leisure-time PA. CONCLUSIONS: One-fifth of adults in rural Australia were inactive. While there was a high prevalence of participants who engaged in daily PA, few did so at moderate-to-vigorous intensity to achieve health benefits. As occupational PA is difficult to change, improvements in levels of PA are more likely during leisure-time and for some people by engaging in commuting PA.


Assuntos
Exercício Físico , Comportamentos Relacionados com a Saúde , Conhecimentos, Atitudes e Prática em Saúde , Aptidão Física , Saúde da População Rural/estatística & dados numéricos , População Rural/estatística & dados numéricos , Adulto , Idoso , Estudos Transversais , Exercício Físico/psicologia , Feminino , Humanos , Atividades de Lazer/psicologia , Masculino , Pessoa de Meia-Idade , Obesidade/prevenção & controle , Aptidão Física/psicologia , Distribuição por Sexo , Meio Social , Fatores Socioeconômicos , Austrália do Sul/epidemiologia , Inquéritos e Questionários , Vitória/epidemiologia
11.
Am J Clin Nutr ; 93(4): 695-702, 2011 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-21289223

RESUMO

BACKGROUND: It is unclear whether high plasma leptin in obese individuals represents leptin resistance or whether individuals with marked reductions in leptin concentrations in response to weight loss may be at greater risk of regaining weight. Moreover, whether changes in leptin predict metabolic improvements during weight loss is uncertain. OBJECTIVE: The objective was to prospectively examine associations between plasma leptin, body fat, and weight and metabolic risk factors in obese children during weight loss. DESIGN: In obese children and adolescents [n = 203; mean age: 14.1 y, >98th body mass index (BMI) percentile for age and sex] participating in a 2-mo inpatient weight-loss program, we measured changes in body composition (by dual-energy X-ray absorptiometry), plasma leptin, insulin, and lipids. After discharge, anthropometric measures and plasma leptin were remeasured at 6 (n = 139) and 12 (n = 100) mo. RESULTS: During the 2-mo program, mean (±SD) weight and fat loss were 13.9 ± 4.0 kg and 9.2 ± 2.5 kg, respectively; and mean plasma leptin decreased by 76%. Weight and fat loss were sustained, and no significant differences in BMI-SD score (SDS) or body composition were found between 12 and 2 mo. Baseline leptin was a negative predictor for percentage fat loss at 2, 6, and 12 mo (P < 0.05). The percentage change in leptin during the 2-mo intervention positively correlated with the relative change in fasting insulin, the relative change in LDL cholesterol at 2 mo, percentage fat loss, and change in BMI-SDS at 2 and 6 mo (P < 0.02). CONCLUSIONS: Even in obese children with strongly elevated baseline leptin, large leptin reductions that predict short- and long-term loss of body fat and improvements in lipids and insulin sensitivity can be achieved. Thus, increased plasma leptin in obese children may not necessarily reflect leptin resistance; many children appear to remain leptin sensitive at this age.


Assuntos
Tecido Adiposo/metabolismo , LDL-Colesterol/sangue , Insulina/sangue , Leptina/sangue , Obesidade/terapia , Redução de Peso/fisiologia , Absorciometria de Fóton , Adolescente , Terapia Comportamental , Biomarcadores/sangue , Composição Corporal , Índice de Massa Corporal , Criança , Dieta Redutora , Ingestão de Energia , Exercício Físico , Feminino , Humanos , Masculino , Obesidade/sangue , Obesidade/metabolismo , Estudos Prospectivos , Fatores de Risco
12.
J Clin Endocrinol Metab ; 95(12): 5412-8, 2010 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-20843953

RESUMO

BACKGROUND: Although serum TSH is often elevated in obesity and may be linked to disorders of lipid and glucose metabolism, the clinical relevance of these relationships remains unclear. SUBJECTS: Subjects were obese children and adolescents (n=206; mean age 14 yr) undergoing rapid weight and fat loss in a standardized, multidisciplinary, 2-month, in-patient weight loss program. DESIGN: This was a prospective study that determined thyroid function, glucose and lipid parameters, leptin, anthropometric measures, and body composition measured by dual-energy x-ray absorption at baseline and at the end of the intervention. RESULTS: At baseline, 52% of children had TSH concentrations in the high normal range (>2.5 mU/liter), but TSH was not correlated with body weight, body mass index sd scores, lean body mass, or body fat percentage. At baseline, independent of adiposity, TSH significantly correlated with total cholesterol (P=0.008), low-density lipoprotein cholesterol (P=0.013), fasting insulin (P=0.010), homeostatic model assessment (HOMA) (P=0.004), and leptin (P=0.006). During the intervention, mean body fat, TSH, HOMA, and fasting insulin decreased by 21, 11, 53, and 54%, respectively. Change (Δ) in TSH did not correlate with Δbody weight or Δbody composition, but ΔTSH significantly correlated with, Δfasting insulin and ΔHOMA, independent of Δbody weight or Δbody composition (P<0.05). CONCLUSION: TSH concentrations are elevated in obese children but are not correlated with the amount of excess body weight or fat. During weight loss, independent of changes in body weight or composition, decreases in elevated serum TSH predict decreases in fasting insulin and HOMA. These findings suggest interventions that target high TSH concentrations during weight loss in obese subjects may improve insulin sensitivity.


Assuntos
Tecido Adiposo/anatomia & histologia , Insulina/fisiologia , Obesidade/terapia , Tireotropina/sangue , Redução de Peso/fisiologia , Adolescente , Composição Corporal , Índice de Massa Corporal , Peso Corporal , Jejum , Feminino , Humanos , Leptina/sangue , Masculino , Seleção de Pacientes , Aptidão Física , Valores de Referência , Análise de Regressão , Tiroxina/sangue , Triglicerídeos/sangue , Tri-Iodotironina/sangue
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA