Brazilian Nutritional Consensus in Hematopoietic Stem Cell Transplantation: children and adolescents.

The Brazilian Nutritional Consensus in Hematopoietic Stem Cell Transplantation: Children and Adolescents was developed by dietitians, physicians, and pediatric hematologists from 10 Brazilian reference centers in hematopoietic stem cell transplantation. The aim was to emphasize the importance of nutritional status and body composition during treatment, as well as the main characteristics related to patient´s nutritional assessment. This consensus is intended to improve and standardize nutrition therapy during hematopoietic stem cell transplantation. The consensus was approved by the Brazilian Society of Bone Marrow Transplantation.

Undernutrition as an Aggravating Risk for Hospital Death in Critically Ill Children with Cancer.

OBJECTIVES: Undernourished children with cancer are at major risk for adverse outcomes. We intended to model nutritional status as risk factor for hospital death. METHODS: Retrospective analysis of two cohorts of children admitted in an oncology/hematology intensive care unit. Logistic regression was used for model building. RESULTS: The derivation cohort had 155 patients, with a median age of 104.9 mo., and 36 deaths (23.2%). Twenty-eight children (18.1%) had the z score of the body mass index < -2. A multivariate model with the variables "relapse of oncological disease" (Odds Ratio 3.14, P = 0.025), "surgical case" (OR 0.22, P = 0.002), "intubation/mechanical ventilation" (OR 8.38, P = 0.000) and "body mass index z score < -2" (OR 3.21, P = 0.024) generated a logit with good predictive capacity for "hospital death". In the validation cohort, with 450 patients (median age of 92.7 mo.), the model was able to predict 55.5 of the 58 observed deaths (Standardized Mortality Rate = 1.04, 95% CI 0.80-1.34, P = 0.72), with P = 0.68 in the Hosmer test. The AUC was 0.90 (95% CI 0.86-0.93). CONCLUSION: Undernutrition increases the risk of death, and is a variable that should be included in predictive mortality algorithms.

Brazilian Nutritional Consensus in Hematopoietic Stem Cell Transplantation: children and adolescents / Consenso Brasileiro de Nutrição em Transplante de Células-Tronco Hematopoiéticas: crianças e adolescentes

ABSTRACT The Brazilian Nutritional Consensus in Hematopoietic Stem Cell Transplantation: Children and Adolescents was developed by dietitians, physicians, and pediatric hematologists from 10 Brazilian reference centers in hematopoietic stem cell transplantation. The aim was to emphasize the importance of nutritional status and body composition during treatment, as well as the main characteristics related to patient´s nutritional assessment. This consensus is intended to improve and standardize nutrition therapy during hematopoietic stem cell transplantation. The consensus was approved by the Brazilian Society of Bone Marrow Transplantation.

RESUMO O Consenso Brasileiro de Nutrição em Transplante de Células-Tronco Hematopoiéticas: crianças e adolescentes foi elaborado com a participação de nutricionistas, médicos nutrólogos e médicos hematologistas pediátricos de 10 centros brasileiros que são referência em transplante de células-tronco hematopoiéticas. O objetivo foi salientar a importância do estado nutricional e da composição corporal durante o tratamento, bem como as principais características relacionadas à avaliação nutricional do paciente. As intenções, ao se estabelecer o consenso, foram aprimorar e padronizar a terapia nutricional durante o transplante de células-tronco hematopoiéticas. O consenso foi aprovado pela Sociedade Brasileira de Transplante de Médula Óssea.

FACTORS ASSOCIATED WITH INADEQUATE MILK CONSUMPTION AMONG ADOLESCENTS: NATIONAL SCHOOL HEALTH SURVEY - PENSE 2012.

OBJECTIVE: To identify the prevalence and factors associated with inadequate milk consumption among adolescents. METHODS: This was a cross-sectional study based on secondary data from the National School Health Survey (2012), a Brazilian survey carried out using a self-administered questionnaire in a representative sample of 9th-grade students from public and private schools. The frequency of milk intake and its association with socio-demographic characteristics, food consumption and physical activity were estimated. A descriptive and inferential analysis of factors associated with inadequate milk consumption (no consumption at least one of the seven days of the week) was performed. A multiple logistic model was adjusted to control confounders. RESULTS: The sample included 108,828 adolescents and inadequate milk consumption ocurred in 58.9%. The final model included nine variables independently associated with inadequate milk intake: breakfast frequency less than 4 days per week (odds ratio [OR]=2.40; p<0.001), unprocessed or minimally processed foods intake less than 5 days per week (OR=1.93; p<0.001), living in the northeast region (OR=1.39; p<0.001), less maternal schooling (OR=1.35; p<0.001), physical inactivity (OR=1.33; p<0.001), attending public school (OR=1.26; p<0.001), not being white (OR=1.14; p<0.001), being older than 14 years old (OR=1.13; p<0.001) and having a habit of eating meals while watching TV or studying (OR=1.04; p=0.036). CONCLUSIONS: Inadequate milk consumption is prevalent among Brazilian adolescents. The identification of associated factors suggests the need to develop nutritional guidance strategies for the prevention of diseases that result from low calcium intake.

Factors associated with inadequate milk consumption among adolescents: national school health survey - pense 2012 / Fatores associados ao consumo inadequado de leite em adolescentes: pesquisa nacional de saúde do escolar - pense 2012

ABSTRACT Objective: To identify the prevalence and factors associated with inadequate milk consumption among adolescents. Methods: This was a cross-sectional study based on secondary data from the National School Health Survey (2012), a Brazilian survey carried out using a self-administered questionnaire in a representative sample of 9th-grade students from public and private schools. The frequency of milk intake and its association with socio-demographic characteristics, food consumption and physical activity were estimated. A descriptive and inferential analysis of factors associated with inadequate milk consumption (no consumption at least one of the seven days of the week) was performed. A multiple logistic model was adjusted to control confounders. Results: The sample included 108,828 adolescents and inadequate milk consumption ocurred in 58.9%. The final model included nine variables independently associated with inadequate milk intake: breakfast frequency less than 4 days per week (odds ratio [OR]=2.40; p<0.001), unprocessed or minimally processed foods intake less than 5 days per week (OR=1.93; p<0.001), living in the northeast region (OR=1.39; p<0.001), less maternal schooling (OR=1.35; p<0.001), physical inactivity (OR=1.33; p<0.001), attending public school (OR=1.26; p<0.001), not being white (OR=1.14; p<0.001), being older than 14 years old (OR=1.13; p<0.001) and having a habit of eating meals while watching TV or studying (OR=1.04; p=0.036). Conclusions: Inadequate milk consumption is prevalent among Brazilian adolescents. The identification of associated factors suggests the need to develop nutritional guidance strategies for the prevention of diseases that result from low calcium intake.

RESUMO Objetivo: Identificar a prevalência e os fatores associados ao consumo inadequado de leite em adolescentes. Métodos: Estudo transversal com base em dados secundários da Pesquisa Nacional de Saúde do Escolar (PeNSE; 2012), inquérito brasileiro realizado por meio de questionário autoaplicável em amostra representativa de alunos do nono ano do ensino fundamental de escolas públicas e privadas. Estimou-se a frequência da ingestão de leite e sua associação com características sociodemográficas, consumo alimentar e prática de atividade física. Foi realizada análise descritiva e inferencial dos fatores associados ao consumo inadequado de leite (ausência em pelo menos um dos sete dias da semana). Um modelo logístico múltiplo foi ajustado para controle das variáveis de confusão. Resultados: A amostra incluiu 108.828 adolescentes e o consumo inadequado de leite foi de 58,9%. O modelo final incluiu 9 variáveis independentemente associadas à ingestão inadequada de leite: frequência de desjejum inferior a 4 dias semanais (odds ratio [OR]=2,40; p<0,001), consumo de alimentos in natura e minimamente processados inferior a 5 dias semanais (OR=1,93; p<0,001), residir na Região Nordeste (OR=1,39; p<0,001), menor escolaridade materna (OR=1,35; p<0,001), inatividade física (OR=1,33; p<0,001), frequentar escola pública (OR=1,26; p<0,001), não ser da raça branca (OR=1,14; p<0,001), ter idade superior a 14 anos (OR=1,13; p<0,001) e possuir o hábito de realizar as refeições assistindo à TV ou estudando (OR=1,04; p=0,036). Conclusões: O consumo inadequado de leite é frequente entre adolescentes brasileiros. A identificação de fatores associados sugere a necessidade do desenvolvimento de estratégias de orientação nutricional para a prevenção de doenças resultantes da baixa ingestão de cálcio.

Evaluation of carotid intima-media thickness and factors associated with cardiovascular disease in children and adolescents with chronic kidney disease / Avaliação da espessura médio-intimal da carótida e fatores associados à doença cardiovascular em crianças e adolescentes com doença renal crônica

ABSTRACT Objective: To assess the carotid intima-media thickness and factors associated with cardiovascular disease in children and adolescents with chronic kidney disease. Material and methods: Observational, cross-sectional study carried out at the Universidade Federal de São Paulo (chronic kidney disease outpatient clinics) with 55 patients (60% males) with a median age of 11.9 years (I25-I75: 9.2-14.8 years). Of the 55 patients, 43 were on conservative treatment and 12 were on dialysis. Serum laboratory parameters (creatinine, uric acid, C-reactive protein, total cholesterol and fractions, and triglycerides), nutritional status (z-score of body mass index, z-score of height/age), body fat (fat percentage and waist circumference), and blood pressure levels were evaluated. The carotid intima-media thickness measure was evaluated by a single ultrasonographer and compared with percentiles established according to gender and height. Data collection was performed between May 2015 and March 2016. Results: Of the children and adolescents with chronic kidney disease, 74.5% (95% CI: 61.0; 85.3) showed an increase (>P95) in carotid intima-media thickness. In patients with stages I and II hypertension, 90.9% had increased carotid intima-media thickness. Nutritional status, body fat and laboratory tests were not associated with increased carotid intima-media thickness. After multivariate adjustment, only puberty (PR = 1.30, p = 0.037) and stages I and II arterial hypertension (PR = 1.42, p = 0.011) were independently associated with carotid intima-media thickness alterations. Conclusion: The prevalence of increased carotid thickness was high in children and adolescents with chronic kidney disease. Puberty and arterial hypertension were independently associated with increased carotid intima-media thickness.

RESUMO Objetivo: Avaliar a espessura médio-intimal da carótida e os fatores associados à doença cardiovascular em crianças e adolescentes com doença renal crônica. Material e métodos: Estudo observacional transversal feito na Universidade Federal de São Paulo (ambulatórios de doença renal crônica) com 55 pacientes (60% do sexo masculino) com mediana de 11,9 anos (I25-I75: 9,2-14,8). Dos 55 pacientes, 43 estavam em tratamento conservador e 12 em terapia dialítica. Foram avaliados os parâmetros laboratoriais séricos (creatinina, ácido úrico, proteína C-reativa, colesterol total e frações e triglicérides), estado nutricional (escore z de índice de massa corpórea, escore z de estatura/idade), gordura corporal (percentual de gordura e circunferência abdominal) e pressão arterial. A medida da espessura médio-intimal da carótida foi avaliada por um único ultrassonografista e comparada com percentis estabelecidos de acordo com o sexo e a estatura. A coleta de dados foi feita entre maio de 2015 e março de 2016. Resultados: Das crianças e adolescentes com doença renal crônica, 74,5% (IC 95%: 61,0; 85,3) apresentaram aumento (> P95) da espessura médio-intimal da carótida. Nos pacientes com hipertensão arterial estágios I e II, 90,9% apresentaram aumento da espessura médio-intimal da carótida. O estado nutricional, a gordura corporal e os exames laboratoriais não apresentaram associação com o aumento da espessura médio-intimal da carótida. Após ajuste multivariado, apenas a puberdade (RP = 1,30; p = 0,037) e a hipertensão arterial estágios I e II (RP = 1,42; p = 0,011) mostraram-se independentemente associados à alteração da espessura médio-intimal da carótida. Conclusão: A prevalência do aumento da espessura da carótida foi elevada em crianças e adolescentes com doença renal crônica. A puberdade e a hipertensão arterial mostraram-se independentemente associadas ao aumento da espessura médio-intimal da carótida.

Evaluation of carotid intima-media thickness and factors associated with cardiovascular disease in children and adolescents with chronic kidney disease.

OBJECTIVE: To assess the carotid intima-media thickness and factors associated with cardiovascular disease in children and adolescents with chronic kidney disease. MATERIAL AND METHODS: Observational, cross-sectional study carried out at the Universidade Federal de São Paulo (chronic kidney disease outpatient clinics) with 55 patients (60% males) with a median age of 11.9 years (I25-I75: 9.2-14.8 years). Of the 55 patients, 43 were on conservative treatment and 12 were on dialysis. Serum laboratory parameters (creatinine, uric acid, C-reactive protein, total cholesterol and fractions, and triglycerides), nutritional status (z-score of body mass index, z-score of height/age), body fat (fat percentage and waist circumference), and blood pressure levels were evaluated. The carotid intima-media thickness measure was evaluated by a single ultrasonographer and compared with percentiles established according to gender and height. Data collection was performed between May 2015 and March 2016. RESULTS: Of the children and adolescents with chronic kidney disease, 74.5% (95% CI: 61.0; 85.3) showed an increase (>P95) in carotid intima-media thickness. In patients with stages I and II hypertension, 90.9% had increased carotid intima-media thickness. Nutritional status, body fat and laboratory tests were not associated with increased carotid intima-media thickness. After multivariate adjustment, only puberty (PR=1.30, p=0.037) and stages I and II arterial hypertension (PR=1.42, p=0.011) were independently associated with carotid intima-media thickness alterations. CONCLUSION: The prevalence of increased carotid thickness was high in children and adolescents with chronic kidney disease. Puberty and arterial hypertension were independently associated with increased carotid intima-media thickness.

FACTORS ASSOCIATED WITH RAPID WEIGHT GAIN IN PRESCHOOL CHILDREN IN PUBLIC DAY CARE CENTERS. / FATORES ASSOCIADOS AO GANHO DE PESO RÁPIDO EM PRÉ-ESCOLARES FREQUENTADORES DE CRECHES PÚBLICAS.

OBJECTIVE: To evaluate the prevalence, and identify factors associated with rapid weight gain in preschool children. METHODS: A cross sectional study was carried out with 136 children between 24 and 35 months of age attending public daycare centers in Mogi das Cruzes between February and December 2014. Interviews were conducted with the mothers for clinical, sociodemographic and anthropometric characterizations of the children. It was considered to be rapid weight gain when the children presented a difference greater than 0.67 between the weight for age Z score from birth to evaluation. A logistic regression model was adjusted for factors associated with rapid weight gain. RESULTS: Fifty children (36.8%) presented rapid weight gain and 36 (26.5%) were overweight. Of these, 22 children were in the rapid weight gain group. The logistic model showed that longest total breastfeeding time (OR 0.94, 95%CI 0.88-0.99; p=0.031) was a protection factor, and low socioeconomic level (OR 4.18, 95%CI 1.04-18.60; p=0.044) was a risk factor for rapid weight gain. CONCLUSIONS: There was a high prevalence of rapid weight gain and being overweight among three year old preschoolers attending public day care centers in Brazil. Encouraging the practice of breastfeeding children in the first years of life, in addition to giving guidance about appropriate foods, especially for families with a low socioeconomic status, can potentially contribute to reduce rapid weight gain and, consequently, future metabolic complications of being overweight.

OBJETIVO: Avaliar a prevalência e identificar os fatores associados ao ganho de peso rápido em pré-escolares. MÉTODOS: Estudo transversal realizado entre fevereiro e dezembro de 2014, com 136 crianças entre 24 e 35 meses de idade frequentadoras de creches públicas do município de Mogi das Cruzes. Foram realizadas entrevistas com as mães para caracterização clínica, sociodemográfica e antropometria das crianças. Considerou-se ganho de peso rápido quando as crianças apresentaram diferença superior a 0,67 entre o escore Z de peso para idade do nascimento à avaliação. Foi ajustado modelo de regressão logística para fatores associados ao ganho de peso rápido. RESULTADOS: Do total de crianças avaliadas, 50 (36,8%) apresentaram ganho de peso rápido e 36 (26,5%) excesso de peso. Destas, 22 crianças eram do grupo ganho de peso rápido. O maior tempo total do aleitamento materno (OR 0,94, IC95% 0,88-0,99; p=0,031) foi identificado como fator de proteção e o baixo nível socioeconômico (OR 4,18, IC95% 1,04-18,60; p=0,044), como fator de risco para ganho de peso rápido. CONCLUSÕES: Encontrou-se alta prevalência de ganho de peso rápido e de excesso de peso entre pré-escolares no terceiro ano de vida frequentadores de creches públicas. Incentivar a prática do aleitamento materno de crianças nos primeiros anos de vida e orientar a alimentação adequada, principalmente nas famílias de baixo nível socioeconômico, contribui potencialmente para a redução do ganho de peso rápido e, consequentemente, de futuras complicações metabólicas do excesso de peso.

Fatores associados ao ganho de peso rápido em pré-escolares frequentadores de creches públicas / Factors associated with rapid weight gain in preschool children in public day care centers

RESUMO Objetivo: Avaliar a prevalência e identificar os fatores associados ao ganho de peso rápido em pré-escolares. Métodos: Estudo transversal realizado entre fevereiro e dezembro de 2014, com 136 crianças entre 24 e 35 meses de idade frequentadoras de creches públicas do município de Mogi das Cruzes. Foram realizadas entrevistas com as mães para caracterização clínica, sociodemográfica e antropometria das crianças. Considerou-se ganho de peso rápido quando as crianças apresentaram diferença superior a 0,67 entre o escore Z de peso para idade do nascimento à avaliação. Foi ajustado modelo de regressão logística para fatores associados ao ganho de peso rápido. Resultados: Do total de crianças avaliadas, 50 (36,8%) apresentaram ganho de peso rápido e 36 (26,5%) excesso de peso. Destas, 22 crianças eram do grupo ganho de peso rápido. O maior tempo total do aleitamento materno (OR 0,94, IC95% 0,88-0,99; p=0,031) foi identificado como fator de proteção e o baixo nível socioeconômico (OR 4,18, IC95% 1,04-18,60; p=0,044), como fator de risco para ganho de peso rápido. Conclusões: Encontrou-se alta prevalência de ganho de peso rápido e de excesso de peso entre pré-escolares no terceiro ano de vida frequentadores de creches públicas. Incentivar a prática do aleitamento materno de crianças nos primeiros anos de vida e orientar a alimentação adequada, principalmente nas famílias de baixo nível socioeconômico, contribui potencialmente para a redução do ganho de peso rápido e, consequentemente, de futuras complicações metabólicas do excesso de peso.

ABSTRACT Objective: To evaluate the prevalence, and identify factors associated with rapid weight gain in preschool children. Methods: A cross sectional study was carried out with 136 children between 24 and 35 months of age attending public daycare centers in Mogi das Cruzes between February and December 2014. Interviews were conducted with the mothers for clinical, sociodemographic and anthropometric characterizations of the children. It was considered to be rapid weight gain when the children presented a difference greater than 0.67 between the weight for age Z score from birth to evaluation. A logistic regression model was adjusted for factors associated with rapid weight gain. Results: Fifty children (36.8%) presented rapid weight gain and 36 (26.5%) were overweight. Of these, 22 children were in the rapid weight gain group. The logistic model showed that longest total breastfeeding time (OR 0.94, 95%CI 0.88-0.99; p=0.031) was a protection factor, and low socioeconomic level (OR 4.18, 95%CI 1.04-18.60; p=0.044) was a risk factor for rapid weight gain. Conclusions: There was a high prevalence of rapid weight gain and being overweight among three year old preschoolers attending public day care centers in Brazil. Encouraging the practice of breastfeeding children in the first years of life, in addition to giving guidance about appropriate foods, especially for families with a low socioeconomic status, can potentially contribute to reduce rapid weight gain and, consequently, future metabolic complications of being overweight.

Impaired bone mineral accrual in prepubertal HIV-infected children: a cohort study

ABSTRACT OBJECTIVE: To evaluate bone mass accrual and determine the influence of clinical, anthropometric, dietary and biochemical parameters on bone mass. METHODS: A cohort study including 35 prepubertal HIV-infected children, between 7 and 12 years, attended at a referral center. At time 1 (T1) and time 2 (T2), patients were assessed according to clinical, anthropometric, dietary, biochemical parameters and bone mineral density (BMD). At T2, patients were divided into prepubertal and pubertal. RESULTS: Despite the increase in bone mass absolute values, there was no improvement in lumbar spine BMD (LSBMD) Z-score (p = 0.512) and worsening in total body BMD (TBMD) Z-score (p = 0.040). Pubertal patients (n = 19) showed higher bone mineral content (BMC) (p = 0.001), TBMD (p = 0.006) and LSBMD (p = 0.002) compared to prepubertal patients. After multivariate linear regression analysis, the predictors of bone mass in T1 were age, BMI and HAZ-scores for BMC; BMI Z-score, adequate serum magnesium concentration and dietary calcium intake for TBMD; adequate serum concentration of magnesium, BMI and HAZ-scores for LSBMD. In T2, age, total body fat and lean body mass (kg) for BMC; BMI Z-score and puberty for TBMD; dietary fat intake, BMI Z-score for BMD and puberty for LSBMD. CONCLUSION: HIV-infected children have compromised bone mass and the presence of puberty seems to provide suitability of these parameters. Adequate intake of calcium and fat appears to be protective for proper bone mass accumulation factor, as well as monitoring nutritional status and serum magnesium concentration.

Impaired bone mineral accrual in prepubertal HIV-infected children: a cohort study.

OBJECTIVE: To evaluate bone mass accrual and determine the influence of clinical, anthropometric, dietary and biochemical parameters on bone mass. METHODS: A cohort study including 35 prepubertal HIV-infected children, between 7 and 12 years, attended at a referral center. At time 1 (T1) and time 2 (T2), patients were assessed according to clinical, anthropometric, dietary, biochemical parameters and bone mineral density (BMD). At T2, patients were divided into prepubertal and pubertal. RESULTS: Despite the increase in bone mass absolute values, there was no improvement in lumbar spine BMD (LSBMD) Z-score (p=0.512) and worsening in total body BMD (TBMD) Z-score (p=0.040). Pubertal patients (n=19) showed higher bone mineral content (BMC) (p=0.001), TBMD (p=0.006) and LSBMD (p=0.002) compared to prepubertal patients. After multivariate linear regression analysis, the predictors of bone mass in T1 were age, BMI and HA Z-scores for BMC; BMI Z-score, adequate serum magnesium concentration and dietary calcium intake for TBMD; adequate serum concentration of magnesium, BMI and HA Z-scores for LSBMD. In T2, age, total body fat and lean body mass (kg) for BMC; BMI Z-score and puberty for TBMD; dietary fat intake, BMI Z-score for BMD and puberty for LSBMD. CONCLUSION: HIV-infected children have compromised bone mass and the presence of puberty seems to provide suitability of these parameters. Adequate intake of calcium and fat appears to be protective for proper bone mass accumulation factor, as well as monitoring nutritional status and serum magnesium concentration.

Nutritional status of children and adolescents at diagnosis of hematological and solid malignancies.

OBJECTIVE: To assess the nutritional status of child and adolescent patients with cancer at diagnosis. METHODS: A total of 1154 patients were included and divided into two groups: solid and hematological malignancies. The parameters used for nutritional assessment were weight, height, triceps skinfold thickness, mid-upper arm circumference, arm muscle circumference, body mass index and percentage weight loss. RESULTS: At diagnosis, below adequate body mass index was observed by anthropometric analysis in 10.85% of the patients - 12.2% in the solid tumor group and 9.52% in the hematologic group. The average weight loss adjusted for a period of 7 days was -2.82% in the hematologic group and -2.9% in the solid tumor group. CONCLUSIONS: The prevalence of malnutrition is higher among patients with malignancies than in the general population, even though no difference was observed between the two groups.

Nutritional status of children and adolescents at diagnosis of hematological and solid malignancies

Objective: To assess the nutritional status of child and adolescent patients with cancer at diagnosis. Methods: A total of 1154 patients were included and divided into two groups: solid and hematological malignancies. The parameters used for nutritional assessment were weight, height, triceps skinfold thickness, mid-upper arm circumference, arm muscle circumference, body mass index and percentage weight loss. Results: At diagnosis, below adequate body mass index was observed by anthropometric analysis in 10.85% of the patients – 12.2% in the solid tumor group and 9.52% in the hematologic group. The average weight loss adjusted for a period of 7 days was −2.82% in the hematologic group and −2.9% in the solid tumor group. Conclusions: The prevalence of malnutrition is higher among patients with malignancies than in the general population, even though no difference was observed between the two groups...

Assessment of antioxidants status and superoxide dismutase activity in HIV-infected children

Objective: This study aims to assess the nutritional status of selenium, copper and zinc; and also the erythrocyte superoxide dismutase activity of HIV-infected children compared to a control group. Methods: A cross-sectional study was carried out with prepubertal HIV-infected children (n = 51) and their healthy siblings (n = 32). All biochemical measurements including plasma selenium, serum copper levels, serum and erythrocyte zinc levels and erythrocyte super-oxide dismutase activity were evaluated according to dietary, clinical and biochemical parameters. Results: Compared to the control group, the HIV-infected children had lower z-score values for height-for-age (p = 0.0006), higher prevalence of stunting (11.8%) (p = 0.047), lower selenium levels (p = 0.0006) and higher copper levels (p = 0.019). No difference was found concerning superoxide dismutase activity (p > 0.05). The HIV-infected group presented a higher proportion (45.1%) of children with zinc intakes below the estimated average requirement (p = 0.014); however, no association with zinc biochemical parameters was found. Conclusion: HIV-infected children have an inadequate selenium and copper nutritional status, which could influence the progression to AIDS. An adequate micronutrient status could improve the clinical conditions in these patients and minimize free radical production and cellular oxidative stress. .

Assessment of antioxidants status and superoxide dismutase activity in HIV-infected children.

OBJECTIVE: This study aims to assess the nutritional status of selenium, copper and zinc; and also the erythrocyte superoxide dismutase activity of HIV-infected children compared to a control group. METHODS: A cross-sectional study was carried out with prepubertal HIV-infected children (n=51) and their healthy siblings (n=32). All biochemical measurements including plasma selenium, serum copper levels, serum and erythrocyte zinc levels and erythrocyte superoxide dismutase activity were evaluated according to dietary, clinical and biochemical parameters. RESULTS: Compared to the control group, the HIV-infected children had lower z-score values for height-for-age (p=0.0006), higher prevalence of stunting (11.8%) (p=0.047), lower selenium levels (p=0.0006) and higher copper levels (p=0.019). No difference was found concerning superoxide dismutase activity (p>0.05). The HIV-infected group presented a higher proportion (45.1%) of children with zinc intakes below the estimated average requirement (p=0.014); however, no association with zinc biochemical parameters was found. CONCLUSION: HIV-infected children have an inadequate selenium and copper nutritional status, which could influence the progression to AIDS. An adequate micronutrient status could improve the clinical conditions in these patients and minimize free radical production and cellular oxidative stress.

Nutritional status and metabolic disorders in HIV-exposed uninfected prepubertal children.

OBJECTIVE: The objective of the study was to assess the nutritional status and metabolic alterations in HIV-exposed uninfected (HIVe) children compared with HIV-unexposed (HIVn) children. METHODS: A cross-sectional study was carried out with 76 children distributed into two groups: HIVe (n = 31) and HIVn (n = 45). Biochemical data (hematologic test, lipid profile, insulin resistance, hepatic profile, and C-reactive protein) were evaluated. Anthropometric parameters and body composition analyses were performed. RESULTS: The groups were similar regarding body mass index-for-age z-scores (P = 0.297) and height-for-age z-scores (P = 0.666). HIVe had a higher dyslipidemia prevalence (38.7% versus 11.1%; P = 0.010), altered total cholesterol (TC) values (19.4% versus 2.2%; P = 0.016) higher LDL-C mean levels (97.8 mg/dl versus 86 mg/dl; P = 0.028), borderline low-density lipoprotein cholesterol (LDL-C) (40% versus 14%; P = 0.011) and TC (41.9% versus 20%; P = 0.038) compared with HIVn. CONCLUSION: Despite the similar nutritional status between groups, our data clearly demonstrated a higher prevalence of dyslipidemia, altered TC, higher LDL-C levels and also LDL-C and TC borderline values in HIVe children.

Body composition in prepubertal, HIV-infected children: a comparison of bioelectrical impedance analysis and dual-energy X-ray absorptiometry.

BACKGROUND: The aim of this study was to compare bioelectrical impedance analysis (BIA) equations developed for healthy pediatric populations and for HIV-infected children using dual-energy X-ray absorptiometry (DXA) as the gold standard. MATERIALS AND METHODS: A cross-sectional study was carried out with 40 prepubertal, HIV-infected children who regularly attended the Pediatric Infectious Disease Clinic at the Universidade Federal de São Paulo, São Paulo, Brazil. The study was conducted from August to November 2008. Demographic data, clinical parameters, immunological status, and use of antiretroviral therapy were obtained from the patients' medical records. We performed anthropometric parameters and body composition analyses, analyzed body composition by BIA and DXA, and compared the results obtained from BIA through using equations for both healthy and HIV-infected populations. RESULTS: The mean ± SD age of the study population was 9.8 ± 1.2 years. Half of the population were females, and 82.5% of the children were clinically classified as B and C. Total body fat, by both absolute mass and by percentage, exhibited high homogeneity between the results obtained from BIA and DXA. However, there was no concordance in fat-free mass. The equation for healthy children showed good sensitivity and specificity when comparing the percentage of total body fat measured by DXA. CONCLUSION: BIA provides reliable data on total body fat but not fat-free mass when compared with DXA. The BIA equation developed for healthy pediatric populations can be used to determine total body fat in HIV-infected children.

Body composition and lipodystrophy in prepubertal HIV-infected children

OBJECTIVE: To identify lipodystrophy in prepubertal HIV-infected children using anthropometric parameters and body composition assessment. METHODS: Cross-sectional study including 40 prepubertal HIV-infected children of both genders seen at the Care Center of the Division of Pediatric Infectious Diseases - Universidade Federal de São Paulo, São Paulo city, Brazil, was carried out from August to December 2008. Age, clinical and immunological status, prophylaxis, transmission and highly active antiretroviral therapy were recorded. Body mass index z-score and height-for-age z-score were calculated to characterize the nutritional status. Circumferences were measured with flexible tape and skinfolds were assessed by an adipometry. Fat mass and lean mass were determined by dual-energy X-ray absorptiometry. Presence of clinical signs of lipodystrophy was assessed by a trained clinician. Data were analyzed using SPSS 12.0 software. RESULTS: The mean age and standard deviation were 9.8 (1.2) years, 50% were girls and 82.5% children from B and C categories. Clinical lipodystrophy and dislypidemia were present in 27.5% and 70%, respectively. The trunk to arm ratio and the limb to trunk ratio had positive association with lipodystrophy. Patients with lipodystrophy had short stature, higher triglycerides values and lower HDL-cholesterol. CONCLUSION: The ratios obtained by skinfolds and dual-energy X-ray absorptiometry measurements can be considered as indicators of preclinical lipodystrophy. The cutoff points have not been determined yet; however, continuous assessment may be useful to identify early body composition changes.

Body composition and lipodystrophy in prepubertal HIV-infected children.

OBJECTIVE: To identify lipodystrophy in prepubertal HIV-infected children using anthropometric parameters and body composition assessment. METHODS: Cross-sectional study including 40 prepubertal HIV-infected children of both genders seen at the Care Center of the Division of Pediatric Infectious Diseases - Universidade Federal de São Paulo, São Paulo city, Brazil, was carried out from August to December 2008. Age, clinical and immunological status, prophylaxis, transmission and highly active antiretroviral therapy were recorded. Body mass index z-score and height-for-age z-score were calculated to characterize the nutritional status. Circumferences were measured with flexible tape and skinfolds were assessed by an adipometry. Fat mass and lean mass were determined by dual-energy X-ray absorptiometry. Presence of clinical signs of lipodystrophy was assessed by a trained clinician. Data were analyzed using SPSS 12.0 software. RESULTS: The mean age and standard deviation were 9.8 (1.2) years, 50% were girls and 82.5% children from B and C categories. Clinical lipodystrophy and dislypidemia were present in 27.5% and 70%, respectively. The trunk to arm ratio and the limb to trunk ratio had positive association with lipodystrophy. Patients with lipodystrophy had short stature, higher triglycerides values and lower HDL-cholesterol. CONCLUSION: The ratios obtained by skinfolds and dual-energy X-ray absorptiometry measurements can be considered as indicators of preclinical lipodystrophy. The cutoff points have not been determined yet; however, continuous assessment may be useful to identify early body composition changes.

Terapia nutricional em queimaduras: uma revisão / Nutritional therapy in burns: a review

Introdução: As anormalidades metabólicas encontradas em queimados são consequência da combinação da liberação de mediadores inflamatórios e da resposta ao estresse. A compreensão dos mecanismos envolvidos na produção excessiva de radicais livres em indivíduos que sofreram queimaduras é de extrema importância para a terapêutica adequada. Objetivo: O objetivo desta revisão foi investigar a terapia nutricional mais indicada e discutir a conduta nutricional em queimados, além de verificar quais os nutrientes estão envolvidos na viabilização do processo de cicatrização. Métodos: Foram pesquisados trabalhos publicados nos últimos 20 anos que abordassem assuntos pertinentes à pesquisa, sendo selecionados artigos da literatura na língua portuguesa, inglesa e espanhola. Resultados: As substâncias que mais se destacam no processo de cicatrização, atuando como parte do suporte nutricional e conferindo efeitos sobre a resposta imune, são: glutamina, arginina e o ômega 3. As vitaminas A, C, E, o zinco e o selênio auxiliam a cicatrização em queimados, por estimular as defesas antioxidantes do organismo. Conclusão: O uso da glutamina, independentemente da via de administração, parece auxiliar na cicatrização e na melhora da perfusão da mucosa intestinal. No entanto, são necessários mais estudos para esclarecer as quantidades adequadas dos nutrientes imunomoduladores e antioxidantes em queimaduras.

Introduction: The metabolic changes found in burned patients, are the result of the combination of the release of inflammatory mediators and response to stress. Understanding the mechanisms involved in the excessive production of free radicals in individuals who suffered burns is extremely important for appropriate therapy. Objective: The aim of this review was to investigate the most appropriate nutritional therapy and discuss the management nutritional in burns, and investigate which nutrients are involved in facilitating the healing process. Methods: We searched for studies published in the last 20 years, that addressed issues relevant to the research being selected articles from the literature in Portuguese, English and Spanish. Results: Substances that stand out in the healing process, acting as part of nutritional support and giving effects on the immune response are: glutamine, arginine and omega 3. The vitamins A, C, E, zinc and selenium contributes in burn healing by stimulating the body’s antioxidant defenses. Conclusion: The use of glutamine, regardless of the route of administration, appears to aid in healing and improving perfusion of the intestinal mucosa. However, further studies are needed to explain the appropriate quantities of nutrients and antioxidants immunomodulators in burn patients.