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[PMID]:29444114
[Au] Autor:Nielsen TRH; Fonvig CE; Dahl M; Mollerup PM; Lausten-Thomsen U; Pedersen O; Hansen T; Holm JC
[Ad] Endereço:The Children's Obesity Clinic, Department of Pediatrics, Copenhagen University Hospital Holbæk, Holbæk, Denmark.
[Ti] Título:Childhood obesity treatment; Effects on BMI SDS, body composition, and fasting plasma lipid concentrations.
[So] Source:PLoS One;13(2):e0190576, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:OBJECTIVE: The body mass index (BMI) standard deviation score (SDS) may not adequately reflect changes in fat mass during childhood obesity treatment. This study aimed to investigate associations between BMI SDS, body composition, and fasting plasma lipid concentrations at baseline and during childhood obesity treatment. METHODS: 876 children and adolescents (498 girls) with overweight/obesity, median age 11.2 years (range 1.6-21.7), and median BMI SDS 2.8 (range 1.3-5.7) were enrolled in a multidisciplinary outpatient treatment program and followed for a median of 1.8 years (range 0.4-7.4). Height and weight, body composition measured by dual-energy X-ray absorptiometry, and fasting plasma lipid concentrations were assessed at baseline and at follow-up. Lipid concentrations (total cholesterol (TC), low-density lipoprotein (LDL), high-density lipoprotein (HDL), non-HDL, and triglycerides (TG)) were available in 469 individuals (264 girls). Linear regressions were performed to investigate the associations between BMI SDS, body composition indices, and lipid concentrations. RESULTS: At baseline, BMI SDS was negatively associated with concentrations of HDL (p = 6.7*10-4) and positively with TG (p = 9.7*10-6). Reductions in BMI SDS were associated with reductions in total body fat percentage (p<2*10-16) and percent truncal body fat (p<2*10-16). Furthermore, reductions in BMI SDS were associated with improvements in concentrations of TC, LDL, HDL, non-HDL, LDL/HDL-ratio, and TG (all p <0.0001). Changes in body fat percentage seemed to mediate the changes in plasma concentrations of TC, LDL, and non-HDL, but could not alone explain the changes in HDL, LDL/HDL-ratio or TG. Among 81 individuals with available lipid concentrations, who increased their BMI SDS, 61% improved their body composition, and 80% improved their lipid concentrations. CONCLUSION: Reductions in the degree of obesity during multidisciplinary childhood obesity treatment are accompanied by improvements in body composition and fasting plasma lipid concentrations. Even in individuals increasing their BMI SDS, body composition and lipid concentrations may improve.
[Mh] Termos MeSH primário: Composição Corporal
Índice de Massa Corporal
Lipídeos/sangue
Obesidade/terapia
[Mh] Termos MeSH secundário: Absorciometria de Fóton
Adolescente
Adulto
Criança
Pré-Escolar
Feminino
Seres Humanos
Lactente
Masculino
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Lipids)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180215
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190576


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[PMID]:29364948
[Au] Autor:Sawai A; Tochigi Y; Kavaliova N; Zaboronok A; Warashina Y; Mathis BJ; Mesaki N; Shiraki H; Watanabe K
[Ad] Endereço:Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
[Ti] Título:MRI reveals menstrually-related muscle edema that negatively affects athletic agility in young women.
[So] Source:PLoS One;13(1):e0191022, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:CONTEXT: About 10% of Japanese female athletes are afflicted by menstrually-related edema, mainly in the lower limbs, and, with few studies on this problem, the effect on performance remains unclear. OBJECTIVE: To quantitatively evaluate fluid retention in the calf in female students over their menstrual cycle using magnetic resonance imaging (MRI) and to determine the relationship of MRI changes and athletic performance. DESIGN: The menstrual cycle was divided into 5 phases: menstrual, follicular, ovulatory, early luteal, and late luteal with sampling done in either morning (AM) or afternoon (PM) sessions. At each phase, MRI of the calf (7:00-8:00, 14:00-16:00), body composition and hormones (7:00-8:00), and athletic performance (14:00-16:00) were evaluated. PARTICIPANTS: 13 adult healthy Japanese female students with eumenorrhea. RESULTS: Estradiol levels decreased significantly in the menstrual phase and the follicular phase compared to the early luteal phase (P = 0.001, P = 0.024 respectively). Menstrual phase estradiol levels were significantly lower compared to the ovulatory phase (P = 0.015), and the late luteal phase (P = 0.003). Progesterone levels decreased significantly in the menstrual phase and the follicular phase compared to the ovulatory phase (P = 0.012, P = 0.009 respectively), the early luteal phase (both P = 0.007), and the late luteal phase (P = 0.028, P = 0.029 respectively), and it along with a significant decrease in the ovulatory phase compared to the early luteal phase (P = 0.010). AM T2 signals were significantly lower in the menstrual phase compared to the ovulatory phase (P = 0.043) but not other phases. PM T2 signals increased significantly in the menstrual phase compared to the follicular phase (P = 0.003), ovulatory phase (P = 0.009), and the late luteal phase (P = 0.032), and the difference between the AM and PM values increased significantly in the menstrual phase compared to the other 4 phases (P<0.01). A negative correlation between fluid retention and agility was observed. CONCLUSION: In female students fluid retention during the menstrual phase could be a factor that influences athletic agility.
[Mh] Termos MeSH primário: Atletas
Edema/fisiopatologia
Imagem por Ressonância Magnética/métodos
Menstruação
[Mh] Termos MeSH secundário: Adulto
Composição Corporal
Estradiol/sangue
Feminino
Seres Humanos
Japão
Músculo Esquelético/diagnóstico por imagem
Músculo Esquelético/fisiopatologia
Progesterona/sangue
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
4G7DS2Q64Y (Progesterone); 4TI98Z838E (Estradiol)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180125
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0191022


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[PMID]:29214781
[Au] Autor:Kim B; Choi KM; Yim HS; Park HT; Yim JH; Lee MG
[Ad] Endereço:Department of Physiology, Korea University College of Medicine, Seoul, Korea.
[Ti] Título:Adipogenic and Lipolytic Effects of Ascorbic Acid in Ovariectomized Rats.
[So] Source:Yonsei Med J;59(1):85-91, 2018 Jan.
[Is] ISSN:1976-2437
[Cp] País de publicação:Korea (South)
[La] Idioma:eng
[Ab] Resumo:PURPOSE: Ascorbic acid has been reported to have an adipogenic effect on 3T3-L1 preadipocytes, while evidence also suggests that ascorbic acid reduces body weight in humans. In this study, we tested the effects of ascorbic acid on adipogenesis and the balance of lipid accumulation in ovariectomized rats, in addition to long-term culture of differentiated 3T3-L1 adipocytes. MATERIALS AND METHODS: Murine 3T3-L1 fibroblasts and ovariectomized rats were treated with ascorbic acid at various time points. In vitro adipogenesis was analyzed by Oil Red O staining, and in vivo body fat was measured by a body composition analyzer using nuclear magnetic resonance. RESULTS: When ascorbic acid was applied during an early time point in 3T3-L1 preadipocyte differentiation and after bilateral ovariectomy (OVX) in rats, adipogenesis and fat mass gain significantly increased, respectively. However, lipid accumulation in well-differentiated 3T3-L1 adipocytes showed a significant reduction when ascorbic acid was applied after differentiation (10 days after induction). Also, oral ascorbic acid administration 4 weeks after OVX in rats significantly reduced both body weight and subcutaneous fat layer. In comparison to the results of ascorbic acid, which is a well-known cofactor for an enzyme of collagen synthesis, and the antioxidant ramalin, a potent antioxidant but not a cofactor, showed only a lipolytic effect in well-differentiated 3T3-L1 adipocytes, not an adipogenic effect. CONCLUSION: Taking these results into account, we concluded that ascorbic acid has both an adipogenic effect as a cofactor of an enzymatic process and a lipolytic effect as an antioxidant.
[Mh] Termos MeSH primário: Adipogenia/efeitos dos fármacos
Ácido Ascórbico/farmacologia
Lipólise/efeitos dos fármacos
Ovariectomia
[Mh] Termos MeSH secundário: Células 3T3-L1
Adipócitos/efeitos dos fármacos
Adipócitos/metabolismo
Animais
Antioxidantes/farmacologia
Composição Corporal/efeitos dos fármacos
Peso Corporal/efeitos dos fármacos
Diferenciação Celular/efeitos dos fármacos
Feminino
Fibroblastos/efeitos dos fármacos
Fibroblastos/metabolismo
Camundongos
Ratos Sprague-Dawley
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Antioxidants); PQ6CK8PD0R (Ascorbic Acid)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180309
[Lr] Data última revisão:
180309
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171208
[St] Status:MEDLINE
[do] DOI:10.3349/ymj.2018.59.1.85


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[PMID]:28460140
[Au] Autor:Samuels MH; Kolobova I; Antosik M; Niederhausen M; Purnell JQ; Schuff KG
[Ad] Endereço:Division of Endocrinology, Diabetes and Clinical Nutrition, Oregon Health & Science University, Portland, Oregon 97239.
[Ti] Título:Thyroid Function Variation in the Normal Range, Energy Expenditure, and Body Composition in L-T4-Treated Subjects.
[So] Source:J Clin Endocrinol Metab;102(7):2533-2542, 2017 Jul 01.
[Is] ISSN:1945-7197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Purpose: It is not clear whether upper limits of the thyrotropin (TSH) reference range should be lowered. This debate can be better informed by investigation of whether variations in thyroid function within the reference range have clinical effects. Thyroid hormone plays a critical role in determining energy expenditure, body mass, and body composition, and therefore clinically relevant variations in these parameters may occur across the normal range of thyroid function. Methods: This was a cross-sectional study of 140 otherwise healthy hypothyroid subjects receiving chronic replacement therapy with levothyroxine (L-T4) who had TSH levels across the full span of the laboratory reference range (0.34 to 5.6 mU/L). Subjects underwent detailed tests of energy expenditure (total and resting energy expenditure, thermic effect of food, physical activity energy expenditure), substrate oxidation, diet intake, and body composition. Results: Subjects with low-normal (≤2.5 mU/L) and high-normal (>2.5 mU/L) TSH levels did not differ in any of the outcome measures. However, across the entire group, serum free triiodothyronine (fT3) levels were directly correlated with resting energy expenditure, body mass index (BMI), body fat mass, and visceral fat mass, with clinically relevant variations in these outcomes. Conclusions: Variations in thyroid function within the laboratory reference range have clinically relevant correlations with resting energy expenditure, BMI, and body composition in L-T4-treated subjects. However, salutary effects of higher fT3 levels on energy expenditure may be counteracted by deleterious effects on body weight and composition. Further studies are needed before these outcomes should be used as a basis for altering L-T4 doses in L-T4-treated subjects.
[Mh] Termos MeSH primário: Composição Corporal/efeitos dos fármacos
Metabolismo Energético/efeitos dos fármacos
Hipotireoidismo/diagnóstico
Hipotireoidismo/tratamento farmacológico
Tiroxina/administração & dosagem
[Mh] Termos MeSH secundário: Absorciometria de Fóton/métodos
Adulto
Idoso
Antropometria
Estudos Transversais
Exercício/fisiologia
Feminino
Seres Humanos
Masculino
Meia-Idade
Valores de Referência
Índice de Gravidade de Doença
Testes de Função Tireóidea
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
Q51BO43MG4 (Thyroxine)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170502
[St] Status:MEDLINE
[do] DOI:10.1210/jc.2017-00224


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[PMID]:28453740
[Au] Autor:Roelfsema F; Yang RJ; Olson TP; Joyner MJ; Takahashi PY; Veldhuis JD
[Ad] Endereço:Department of Endocrinology and Metabolism, Leiden University Medical Center, 2333ZA Leiden, The Netherlands.
[Ti] Título:Enhanced Coupling Within Gonadotropic and Adrenocorticotropic Axes by Moderate Exercise in Healthy Men.
[So] Source:J Clin Endocrinol Metab;102(7):2482-2490, 2017 Jul 01.
[Is] ISSN:1945-7197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Context: Exercise elicits incompletely defined adaptations of metabolic and endocrine milieu, including the gonadotropic and corticotropic axes. Objective: To quantify the impact of acute exercise on coordinate luteinizing hormone (LH) and testosterone (T) and adrenocorticotropic hormone (ACTH) and cortisol secretion in healthy men in relation to age. Participants and Design: Prospectively randomized, within-subject crossover study in 23 men aged 19 to 77 years old. Subjects underwent rest and 30 minutes of mixed exercise at 65% of maximal aerobic capacity with 10-minute blood sampling between 7:00 am and 1:00 pm, 2 weeks apart. Main Outcome Measures: Incremental changes in LH, T, ACTH, and cortisol concentrations, the feedforward and feedback strength between exercise and rest, quantified by approximate entropy (ApEn), and bihormonal synchrony, quantitated by cross-ApEn. Results: Mean hourly exercise-minus-rest LH and ACTH increments increased from -0.055 ± 0.187 to 0.755 ± 0.245 IU/L (P = 0.003) and from 2.9 ± 2.2 to 71.2 ± 16.1 ng/L (P < 0.0001), respectively, during exercise. T and cortisol increments increased concurrently from -9.6 ± 16.7 to 47.6 ± 17.1 ng/dL (P < 0.0001) and 0.45 ± 0.76 to 7.27 ± 0.64 µg/dL (P < 0.0001), respectively. During exercise, feedforward and feedback LH-T and ACTH-cortisol cross-ApEn decreased markedly quantifying enhanced hormonal coupling. Conclusions: Acute moderate mixed exercise in healthy men rapidly enhances feedforward LH-T and ACTH-cortisol coordination and reciprocal feedback within the gonadotropic and corticotropic axes. In principle, enhancement of both LH-T and ACTH-cortisol secretory synchrony by exercise could reflect augmented coupling between brain-testicular and brain-adrenal neural outflow.
[Mh] Termos MeSH primário: Hormônio Adrenocorticotrópico/sangue
Composição Corporal/fisiologia
Exercício/fisiologia
Hormônio Luteinizante/sangue
[Mh] Termos MeSH secundário: Hormônio Adrenocorticotrópico/secreção
Adulto
Antropometria
Índice de Massa Corporal
Estudos Cross-Over
Tolerância ao Exercício
Voluntários Saudáveis
Seres Humanos
Hormônio Luteinizante/secreção
Masculino
Meia-Idade
Estudos Prospectivos
Valores de Referência
Adulto Jovem
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
9002-60-2 (Adrenocorticotropic Hormone); 9002-67-9 (Luteinizing Hormone)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE
[do] DOI:10.1210/jc.2017-00036


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[PMID]:27778643
[Au] Autor:Sparks LM; Redman LM; Conley KE; Harper ME; Yi F; Hodges A; Eroshkin A; Costford SR; Gabriel ME; Shook C; Cornnell HH; Ravussin E; Smith SR
[Ad] Endereço:Translational Research Institute for Metabolism and Diabetes, Florida Hospital, Orlando, Florida 32804.
[Ti] Título:Effects of 12 Months of Caloric Restriction on Muscle Mitochondrial Function in Healthy Individuals.
[So] Source:J Clin Endocrinol Metab;102(1):111-121, 2017 Jan 01.
[Is] ISSN:1945-7197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Context: The effects of caloric restriction (CR) on in vivo muscle mitochondrial function in humans are controversial. Objective: We evaluated muscle mitochondrial function and associated transcriptional profiles in nonobese humans after 12 months of CR. Design: Individuals from an ancillary study of the CALERIE 2 randomized controlled trial were assessed at baseline and 12 months after a 25% CR or ad libitum (control) diet. Setting: The study was performed at Pennington Biomedical Research Center in Baton Rouge, LA. Participants: Study participants included 51 (34 female subjects, 25 to 50 years of age) healthy nonobese individuals randomized to 1 of 2 groups (CR or control). Intervention: This study included 12 months of a 25% CR or ad libitum (control) diet. Main Outcomes: In vivo mitochondrial function [maximal ATP synthesis rate (ATPmax), ATPflux/O2 (P/O)] was determined by 31P-magnetic resonance spectroscopy and optical spectroscopy, and body composition was determined by dual-energy X-ray absorptiometry. In a subset of individuals, a muscle biopsy was performed for transcriptional profiling via quantitative reverse transcription polymerase chain reaction and microarrays. Results: Weight, body mass index (BMI), fat, and fat-free mass (P < 0.001 for all) significantly decreased at month 12 after CR vs control. In vivo ATPmax and P/O were unaffected by 12 months of CR. Targeted transcriptional profiling showed no effects on pathways involved in mitochondrial biogenesis, function, or oxidative stress. A subgroup analysis according to baseline P/O demonstrated that a higher (vs lower) P/O was associated with notable improvements in ATPmax and P/O after CR. Conclusions: In healthy nonobese humans, CR has no effect on muscle mitochondrial function; however, having a "more coupled" (versus "less coupled") phenotype enables CR-induced improvements in muscle mitochondrial function.
[Mh] Termos MeSH primário: Biomarcadores/análise
Restrição Calórica
Metabolismo Energético
Perfilação da Expressão Gênica
Mitocôndrias Musculares/metabolismo
Músculo Esquelético/metabolismo
[Mh] Termos MeSH secundário: Adulto
Composição Corporal
Índice de Massa Corporal
Peso Corporal
Exercício/fisiologia
Feminino
Voluntários Saudáveis
Seres Humanos
Masculino
Meia-Idade
Estresse Oxidativo
Fatores de Tempo
[Pt] Tipo de publicação:JOURNAL ARTICLE; MULTICENTER STUDY; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Biomarkers)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.1210/jc.2016-3211


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[PMID]:27778642
[Au] Autor:Garibay-Nieto N; Queipo-García G; Alvarez F; Bustos M; Villanueva E; Ramírez F; León M; Laresgoiti-Servitje E; Duggirala R; Macías T; Cuevas S; Jalife A; Fonseca-Sánchez M; Serratos F; López-Alvarenga JC
[Ad] Endereço:Children and Adolescent Obesity Clinic.
[Ti] Título:Effects of Conjugated Linoleic Acid and Metformin on Insulin Sensitivity in Obese Children: Randomized Clinical Trial.
[So] Source:J Clin Endocrinol Metab;102(1):132-140, 2017 Jan 01.
[Is] ISSN:1945-7197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Context: Insulin resistance precedes metabolic syndrome abnormalities and may promote cardiovascular disease and type 2 diabetes in children with obesity. Results of lifestyle modification programs have been discouraging, and the use of adjuvant strategies has been necessary. Objective: This study aimed to evaluate the effects of metformin and conjugated linoleic acid (CLA) on insulin sensitivity, measured via euglycemic-hyperinsulinemic clamp technique and insulin pathway expression molecules in muscle biopsies of children with obesity. Design: A randomized, double-blinded, placebo-controlled clinical trial was conducted. Setting: Children with obesity were randomly assigned to receive metformin, CLA, or placebo. Results: Intervention had a positive effect in all groups. For insulin sensitivity Rd value (mg/kg/min), there was a statistically significant difference between the CLA vs placebo (6.53 ± 2.54 vs 5.05 ± 1.46, P = 0.035). Insulinemia and homeostatic model assessment of insulin resistance significantly improved in the CLA group (P = 0.045). After analysis of covariance was performed and the influence of body mass index, age, Tanner stage, prescribed diet, and fitness achievement was controlled, a clinically relevant effect size on insulin sensitivity remained evident in the CLA group (37%) and exceeded lifestyle program benefits. Moreover, upregulated expression of the insulin receptor substrate 2 was evident in muscle biopsies of the CLA group. Conclusions: Improvement of insulin sensitivity, measured via euglycemic-hyperinsulinemic clamp and IRS2 upregulation, favored patients treated with CLA.
[Mh] Termos MeSH primário: Doenças Cardiovasculares/prevenção & controle
Hipoglicemiantes/uso terapêutico
Resistência à Insulina
Ácidos Linoleicos Conjugados/uso terapêutico
Síndrome Metabólica/prevenção & controle
Metformina/uso terapêutico
Obesidade/tratamento farmacológico
[Mh] Termos MeSH secundário: Adolescente
Biomarcadores/análise
Glicemia/análise
Composição Corporal
Criança
Método Duplo-Cego
Quimioterapia Combinada
Feminino
Seguimentos
Seres Humanos
Insulina/sangue
Lipídeos/análise
Masculino
Obesidade/complicações
Prognóstico
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (Biomarkers); 0 (Blood Glucose); 0 (Hypoglycemic Agents); 0 (Insulin); 0 (Linoleic Acids, Conjugated); 0 (Lipids); 9100L32L2N (Metformin)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.1210/jc.2016-2701


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[PMID]:27778640
[Au] Autor:Legro RS; Kunselman AR; Stetter CM; Gnatuk CL; Estes SJ; Brindle E; Vesper HW; Botelho JC; Lee PA; Dodson WC
[Ad] Endereço:Departments of Obstetrics and Gynecology.
[Ti] Título:Normal Pubertal Development in Daughters of Women With PCOS: A Controlled Study.
[So] Source:J Clin Endocrinol Metab;102(1):122-131, 2017 Jan 01.
[Is] ISSN:1945-7197
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Context: Daughters of women with polycystic ovary syndrome (PCOS) are thought to be at increased risk for developing stigmata of the syndrome, but the ontogeny during puberty is uncertain. Objective: We phenotyped daughters (n = 76) of mothers with PCOS and daughters (n = 80) from control mothers for reproductive and metabolic parameters characteristic of PCOS. Design, Setting, and Participants: We performed a matched case/control study at Penn State Hershey Medical Center that included non-Hispanic, white girls 4 to 17 years old. Intervention: We obtained birth history, biometric, ovarian ultrasounds, whole-body dual-energy X-ray absorptiometry scan for body composition, 2-hour glucose challenged salivary insulin levels, and two timed urinary collections (12 hours overnight and 3 hours in the morning) for gonadotropins and sex steroids. Main Outcome Measures: We measured integrated urinary levels of adrenal (dehydroepiandrosterone sulfate) and ovarian [testosterone (TT)] steroids. Other endpoints included integrated salivary insulin levels and urinary luteinizing hormone levels. Results: There were no differences in detection rates or mean levels for gonadotropins and sex steroids in timed urinary collections between PCOS daughters and control daughters, nor were there differences in integrated salivary insulin levels. Results showed that 69% of Tanner 4/5 PCOS daughters vs 31% of control daughters had hirsutism defined as a Ferriman-Gallwey score >8 (P = 0.04). There were no differences in body composition as determined by dual-energy X-ray absorptiometry between groups in the three major body contents (i.e., bone, lean body mass, and fat) or in ovarian volume between groups. Conclusions: Matched for pubertal stage, PCOS daughters have similar levels of urinary androgens and gonadotropins as well as glucose-challenged salivary insulin levels.
[Mh] Termos MeSH primário: Filho de Pais Incapacitados/estatística & dados numéricos
Insulina/metabolismo
Síndrome do Ovário Policístico/fisiopatologia
Puberdade/metabolismo
Maturidade Sexual/fisiologia
[Mh] Termos MeSH secundário: Biomarcadores/análise
Composição Corporal
Estudos de Casos e Controles
Criança
Feminino
Seguimentos
Teste de Tolerância a Glucose
Seres Humanos
Masculino
Núcleo Familiar
Prognóstico
Testosterona/sangue
[Pt] Tipo de publicação:COMPARATIVE STUDY; JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Biomarkers); 0 (Insulin); 3XMK78S47O (Testosterone)
[Em] Mês de entrada:1706
[Cu] Atualização por classe:180308
[Lr] Data última revisão:
180308
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:161026
[St] Status:MEDLINE
[do] DOI:10.1210/jc.2016-2707


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[PMID]:29465583
[Au] Autor:Yang Q; Huang G; Tian Q; Liu W; Sun X; Li N; Sun S; Zhou T; Wu N; Wei Y; Chen P; Wang R
[Ad] Endereço:Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport, Shanghai, China.
[Ti] Título:"Living High-Training Low" improved weight loss and glucagon-like peptide-1 level in a 4-week weight loss program in adolescents with obesity: A pilot study.
[So] Source:Medicine (Baltimore);97(8):e9943, 2018 Feb.
[Is] ISSN:1536-5964
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:BACKGROUND: "Living High-Training Low" (LHTL) is effective for the improvement of athletic ability; however, little is known about the effect of LHTL on obese individuals. The present study determined whether LHTL would have favorable influence on body composition, rebalance the appetite hormones, and explore the underlying mechanism. METHODS: Adolescents with obesity [body mass index (BMI) >30 kg/m] were randomly assigned to "Living Low-Training Low" (LLTL, n = 19) group that slept in a normobaric normoxia condition and the LHTL (n = 16) group slept in a normobaric hypoxia room (14.7% PO2 ∼2700 m). Both groups underwent the same aerobic exercise training program. Morphological, blood lipids, and appetite hormones were measured and assessed. RESULTS: After the intervention, the body composition improved in both groups, whereas reductions in body weight (BW), BMI, and lean body mass increased significantly in the LHTL group (all, P < .05). In the LLTL group, cholecystokinin (CCK) decreased remarkably (P < .05) and CCK changes were positively associated with changes in BW (r = 0.585, P = .011) and BMI (r = 0.587, P = .010). However, in the LHTL group, changes in plasma glucagon-like peptide-1 (GLP-1) and interleukin-6 (IL-6) levels, positively correlated with each other (r = 0.708, P = .015) but negatively with BW changes (r = -0.608, P = .027 and r = -0.518, P = .048, respectively). CONCLUSION: The results indicated that LHTL could induce more weight loss safely and efficiently as compared to LLTL and increase the plasma GLP-1 levels that may be mediated by IL-6 to rebalance the appetite. Thus, an efficient method to treat obesity and prevent weight regain by appetite rebalance in hypoxia condition was established.
[Mh] Termos MeSH primário: Peptídeo 1 Semelhante ao Glucagon/sangue
Oxigenação Hiperbárica/métodos
Obesidade Pediátrica/sangue
Obesidade Pediátrica/terapia
Programas de Redução de Peso/métodos
[Mh] Termos MeSH secundário: Adolescente
Composição Corporal
Índice de Massa Corporal
Colecistocinina/sangue
Exercício/fisiologia
Feminino
Seres Humanos
Hipóxia/sangue
Hipóxia/etiologia
Hipóxia/terapia
Interleucina-6/sangue
Masculino
Projetos Piloto
Resultado do Tratamento
Perda de Peso
[Pt] Tipo de publicação:JOURNAL ARTICLE; RANDOMIZED CONTROLLED TRIAL
[Nm] Nome de substância:
0 (IL6 protein, human); 0 (Interleukin-6); 89750-14-1 (Glucagon-Like Peptide 1); 9011-97-6 (Cholecystokinin)
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:AIM; IM
[Da] Data de entrada para processamento:180222
[St] Status:MEDLINE
[do] DOI:10.1097/MD.0000000000009943


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[PMID]:28406358
[Au] Autor:Tam N; Santos-Concejero J; Tucker R; Lamberts RP; Micklesfield LK
[Ad] Endereço:a Division of Exercise Science and Sports Medicine, Department of Human Biology, Faculty of Health Science , University of Cape Town , Cape Town , South Africa.
[Ti] Título:Bone health in elite Kenyan runners.
[So] Source:J Sports Sci;36(4):456-461, 2018 Feb.
[Is] ISSN:1466-447X
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Impact loading in athletes participating in various sports has been positively associated with increased bone mineral density (BMD), but this has not been investigated in elite Kenyan runners. Body composition and site-specific BMD measures quantified with dual x-ray absorptiometry were measured in 15 elite male Kenyan runners and 23 apparently healthy South African males of different ethnicities. Training load and biomechanical variables associated with impact loading, such as joint stiffness, were determined in the elite Kenyan runners. Greater proximal femur (PF) BMD (g · cm ) was higher (P = 0.001, ES = 1.24) in the elite Kenyan runners compared with the controls. Six of the 15 (40%) Kenyan runners exhibited lumbar spine (LS) Z-Scores below -2.0 SD, whereas this was not found in the apparently healthy controls. PFBMD was associated with training load (r = 0.560, P = 0.003) and ankle (r = 0.710, P = 0.004) and knee (r = 0.546, P = 0.043) joint stiffness. Elite Kenyan runners exhibit greater PFBMD than healthy controls, which is associated with higher training load and higher joint stiffness. Our results reaffirm the benefits of impact loading on BMD at a weight-bearing site, while a high prevalence of low LSBMD in the elite Kenyan runners is hypothesised to be the result of a mismatch between energy intake and high training load. Future research investigating energy availability in Kenyan runners and the possible association with musculoskeletal injury should be investigated.
[Mh] Termos MeSH primário: Composição Corporal/fisiologia
Densidade Óssea/fisiologia
Corrida/fisiologia
[Mh] Termos MeSH secundário: Absorciometria de Fóton
Adulto
Fenômenos Biomecânicos
Fêmur/metabolismo
Seres Humanos
Quênia
Vértebras Lombares/metabolismo
Masculino
Estado Nutricional
Condicionamento Físico Humano
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1803
[Cu] Atualização por classe:180302
[Lr] Data última revisão:
180302
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170414
[St] Status:MEDLINE
[do] DOI:10.1080/02640414.2017.1313998



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