RESUMO Objetivo: Investigar a relação da antropometria e composição corporal com o equilíbrio postural dinâmico em idosas com baixa Densidade Mineral Óssea (DMO). Métodos: 45 idosas (≥ 60 anos), baixa DMO e diagnóstico nutricional entre baixo peso e sobrepeso. Para a avaliação da composição corporal utilizou-se a densitometria por emissão de raios x de dupla energia e exame antropométrico para aferir: massa corporal (kg), estatura (cm) e índice de massa corporal (IMC) (k/m2). A avaliação do equilíbrio postural dinâmico foi realizada pelo teste clínico mini Balance Master Evaluation System, pelo teste computadorizado Balance Master ® System e pelos testes Sit-to-Stand e Step Up/Over. Resultados: Houve correlação negativa do miniBESTest (r = − 0,566; p ≤ 0,001) e tempo de subir e descer um degrau (r = − 0,393; p ≤ 0,007) com a massa gorda, e correlação positiva do miniBESTest (r = 0,526; p ≤ 0,001) e tempo de subir e descer um degrau com a massa muscular (r = 0,297; p ≤ 0,04). Quanto às variáveis antropométricas, apenas a estatura apresentou correlação positiva (r = 0,296; p ≤ 0,04) com a velocidade no teste de sentar-se e levantar-se. Conclusão: A massa magra reduz as oscilações posturais. Em contrapartida, a massa gorda interfere de forma negativa no equilíbrio postural dinâmico de mulheres com baixa DMO. A estatura esteve relacionada ao equilíbrio postural dinâmico: quanto mais altas as idosas pior era seu equilíbrio. Nível de Evidência II, Estudos prognósticos - Investigação do efeito de característica de um paciente sobre o desfecho da doença.

ABSTRACT Objective: To investigate the relationship between anthropometry and body composition with dynamic postural balance in elderly women with low bone mineral density (BMD). Methods: 45 older women (≥ 60 years), low BMD and nutritional diagnosis of low weight to overweight. For the assessment of body composition, Dual energy X-ray emission densitometry and anthropometric examination were used to measure: body mass (kg), height (cm) and BMI (k/m2). The assessment of dynamic postural balance was performed by the mini Balance Master Evaluation System clinical test and the computerized Balance Master® System test by the Sit to Stand and Step Up/Over tests. Results: There was a negative correlation between miniBESTest (r = − 0.566; p ≤ 0.001) and time to ascend and descend step (r = − 0.393; p ≤ 0.007) with fat mass, and positive correlation with miniBESTest (r = 0.526; p ≤0.001) and time to go up and down a step with muscle mass (r = 0.297; p ≤ 0.04). As for anthropometric variables, only height showed a positive correlation (r = 0.296; p ≤ 0.04) with the speed in the sit and stand test. Conclusion: Lean mass reduces postural oscillations; in contrast, fat mass negatively interfered with dynamic postural balance in women with low BMD. Height was related to dynamic postural balance, the taller the elderly, the worse their balance. Level of Evidence II, Prognostic Studies - Investigating the Effect of a Patient Characteristic on the Outcome of Disease.

Abstract Background: Modifiable cardiovascular risk factors (MCRFs), such as those related to aerobic capacity, muscle strength, physical activity, and body composition, have been poorly studied in Takayasu arteritis (TAK). Therefore, the aim of the study was to investigate MCRFs and their relationships with disease status and comorbidities among patients with TAK. Methods: A multicenter cross-sectional study was conducted between 2019 and 2020, in which 20 adult women with TAK were compared with 16 healthy controls matched by gender, age, and body mass index. The following parameters were analyzed: aerobic capacity by cardiopulmonary test; muscle function by timed-stands test, timed up-and-go test, and handgrip test; muscle strength by one-repetition maximum test and handgrip test; body composition by densitometry; physical activity and metabolic equivalent by IPAQ, quality of life by HAQ and SF-36; disease activity by ITAS2010 and NIH score; and presence of comorbidities. Results: Patients with TAK had a mean age of 41.5 (38.0-46.3) years, disease duration of 16.0 (9.5-20.0) years, and a mean BMI of 27.7±4.5 kg/m2. Three out of the 20 patients with TAK had active disease. Regarding comorbidities, 16 patients had systemic arterial hypertension, 11 had dyslipidemia, and two had type 2 diabetes mellitus, while the control group had no comorbidities. TAK had a significant reduction in aerobic capacity (absolute and relative VO2 peak), muscle strength in the lower limbs, increased visceral adipose tissue, waist-to-hip ratio, reduced walking capacity, decreased weekly metabolic equivalent, and quality of life (P< 0.05) as compared to controls. However, there were no correlations between these MCRFs parameters and disease activity. Conclusions: TAK show impairment in MCRFs; therefore, strategies able to improve MCRF should be considered in this disease.

Resumo Fundamento: Hiperatividade simpática de repouso e uma reativação parassimpática diminuída pós-exercício têm sido descritas em pacientes com insuficiência cardíaca (IC). No entanto, a associação dessas alterações autonômicas em pacientes com IC sarcopênicos ainda não são conhecidas. Objetivo: O objetivo deste estudo foi avaliar o impacto da modulação autonômica sobre sarcopenia em pacientes com IC do sexo masculino. Métodos: Foram estudados 116 pacientes com IC e fração de ejeção ventricular esquerda inferior a 40%. Todos os pacientes foram submetidos ao teste de exercício cardiopulmonar máximo. A frequência cardíaca máxima foi registrada, e o delta de recuperação da frequência cardíaca (∆RFC) foi avaliado no primeiro e no segundo minuto após o exercício. A atividade nervosa simpática muscular (ANSM) foi registrada por microneurografia. A Absorciometria Radiológica de Dupla Energia foi usada para medir composição cpororal, e a sarcopenia definida como a soma da massa muscular apendicular (MMA) dividida pela altura em metros ao quadrado e força da mão. Resultados: A sarcopenia foi identificada em 33 pacientes (28%). Os pacientes com sarcopenia apresentaram maior ANSM que aqueles sem sarcopenia - 47 (41-52) vs. 40 (34-48) impulsos (bursts)/min, p = 0,028). Pacientes sarcopênicos apresentaram ∆RFC mais baixo no primeiro [15 (10-21) vs. 22 (16-30) batimentos/min, p < 0,001) e no segundo [25 (19-39) vs. 35 (24-48) batimentos/min, p = 0,017) minuto que pacientes não sarcopênicos. Observou-se uma correlação positiva entre a MMA e a ANSM (r = -0,29; p = 0,003). Conclusão: Um desequilíbrio simpático-vagal parece estar associado com sarcopenia em pacientes com IC do sexo masculino. Esses resultados destacam a importância de uma abordagem terapêutica em pacientes com perda muscular e fluxo simpático periférico aumentado.

Abstract Background: Resting sympathetic hyperactivity and impaired parasympathetic reactivation after exercise have been described in patients with heart failure (HF). However, the association of these autonomic changes in patients with HF and sarcopenia is unknown. Objective: The aim of this study was to evaluate the impact of autonomic modulation on sarcopenia in male patients with HF. Methods: We enrolled 116 male patients with HF and left ventricular ejection fraction < 40%. All patients underwent a maximal cardiopulmonary exercise testing. Maximal heart rate was recorded and delta heart rate recovery (∆HRR) was assessed at 1st and 2nd minutes after exercise. Muscle sympathetic nerve activity (MSNA) was recorded by microneurography. Dual-energy X-ray absorptiometry was used to measure body composition and sarcopenia was defined by the sum of appendicular lean muscle mass (ALM) divided by height in meters squared and handgrip strength. Results: Sarcopenia was identified in 33 patients (28%). Patients with sarcopenia had higher MSNA than those without (47 [41-52] vs. 40 [34-48] bursts/min, p = 0.028). Sarcopenic patients showed lower ∆HRR at 1st (15 [10-21] vs. 22 [16-30] beats/min, p < 0.001) and 2nd min (25 [19-39] vs. 35 [24-48] beats/min, p = 0.017) than non-sarcopenic. There was a positive correlation between ALM and ∆HRR at 1st (r = 0.26, p = 0.008) and 2nd min (r = 0.25, p = 0.012). We observed a negative correlation between ALM and MSNA (r = -0.29, p = 0.003). Conclusion: Sympatho-vagal imbalance seems to be associated with sarcopenia in male patients with HF. These results highlight the importance of a therapeutic approach in patients with muscle wasting and increased peripheral sympathetic outflow.

ABSTRACT Decrease in bone mineral density (BMD) has been a complication among people living with HIV/AIDS. To investigate the prevalence of osteopenia/osteoporosis among HIV-infected people living in São Paulo city, we studied 108 HIV-infected patients (79 men and 29 women). We extracted data from patients’ medical records and BMD was measured by dual-energy X-ray absorptiometry (DXA). Median age of participants was 42 years (interquartile range [IQR] 36-48 years), and the median time since HIV diagnosis was 4.01 years (IQR 2-11 years). Patients had acquired HIV primarily by the sexual route (men who have sex with men 44%, heterosexual 49%). Median age, duration of HIV infection, duration of ART and CD4 nadir were similar for men and women. Plasma viral load was undetectable for 53 patients (49%). Median CD4 T cell count was 399 cells/µL (IQR 247 - 568). Twenty five patients (23%) had LBMD, and there was no statistically significant difference between men and women (<-1). The associated risk factors for LBMD were older age (≥ 50 years old) and smoking with a RR of 3.87 and 2.80, respectively. Thus, despite the lack of statistically significant relationship between the use of ART and LBMD or between duration of ART and LBMD, these factors should be addressed in larger studies.

RESUMO Objetivo: O objetivo deste estudo foi analisar a correlação entre os níveis de vitamina D e parâmetros clínicos, densidade mineral óssea (DMO), qualidade de vida (QV) e capilaroscopia periungueal (CPU) em pacientes com esclerose sistêmica difusa (ES). Métodos: Mensuraram-se os níveis séricos de 25-hidroxivitamina D (25OHD) de 38 pacientes do sexo feminino com ES difusa. No momento da inclusão, analisaram-se o envolvimento de órgãos, autoanticorpos, escore cutâneo de Rodnan modificado (ERM), Medsger Disease Severity Index (MDSI), índice de massa corporal (IMC), DMO, CPU, Short-Form-36 Questionnaire (SF-36) e Health Assessment Questionnaire (HAQ) por meio de uma entrevista padronizada, exame físico e avaliação de prontuário eletrônico. Resultados: A média do nível sérico de 25OHD foi de 20,66 ± 8,20 ng/mL. Dos pacientes, 11% tinham níveis de 25OHD ≤ 10 ng/mL, 50% ≤ 20 ng/mL e 87% ≤ 30 ng/mL. Os níveis séricos de vitamina D estiveram positivamente correlacionados com o IMC (r = 0,338, p = 0,038), DMO-fêmur total (r = 0,340, p = 0,037), DMO-colo femoral (r = 0,384, p = 0,017), SF-36-Vitalidade (r = 0,385, p = 0,017), SF-36-Aspecto social (r = 0,320, p = 0,050), SF-36-Aspecto emocional (r = 0,321, p = 0,049) e SF-36-Saúde mental (r = 0,531, p = 0,0006) e se correlacionaram negativamente com o HAQ-Alcance (r = –0,328, p = 0,044) e HAQ-força de preensão (r = –0,331, p = 0,042). Também foi observada uma correlação negativa com a CPU- desvascularização difusa (p = 0,029) e CPU-área avascular (p = 0,033). Conclusão: O presente estudo fornece evidências novas de que níveis baixos de 25OHD têm um impacto negativo sobre a qualidade de vida de pacientes com ES difusa e que são necessários mais estudos para definir se a suplementação de vitamina D pode melhorar a qualidade de vida relacionada com a saúde desses pacientes. A observação adicional de uma correlação com alterações graves na CPU sugere um possível papel da 25OHD no envolvimento vascular subjacente da ES.

ABSTRACT Objective: The aim of this study was to analyze the correlation of vitamin D levels with clinical parameters, bone mineral density (BMD), quality of life (QoL) and nailfold capillaroscopy (NC) in patients with diffuse systemic sclerosis (SSc). Methods: Thirty-eight female patients with diffuse SSc were analyzed regarding 25-hydroxyvitamin D (25OHD) serum levels. At inclusion, organ involvement, autoantibodies, modified Rodnan skin score (mRSS), Medsger Disease Severity Index (MDSI), body mass index (BMI), BMD, NC, Short-Form-36 Questionnaire (SF-36), and Health Assessment Questionnaire (HAQ), were performed through a standardized interview, physical examination and electronic chart review. Results: Mean 25OHD serum level was 20.66 ± 8.20 ng/mL. Eleven percent of the patients had 25OHD levels ≤10 ng/mL, 50% ≤20 ng/mL and 87% ≤30 ng/mL. Vitamin D serum levels were positively correlated with BMI (r = 0.338, p = 0.038), BMD-total femur (r = 0.340, p = 0.037), BMD-femoral neck (r = 0.384, p = 0.017), SF-36-Vitality (r = 0.385, p = 0.017), SF-36-Social Function (r = 0.320, p = 0.050), SF-36-Emotional Role (r = 0.321, p = 0.049) and SF-36-Mental Health (r = 0.531, p = 0.0006) and were negatively correlated with HAQ-Reach (r = −0.328, p = 0.044) and HAQ-Grip Strength (r = −0.331, p = 0.042). A negative correlation with NC-diffuse devascularization (p = 0.029) and NC-avascular area (p = 0.033) was also observed. Conclusion: The present study provides novel evidence demonstrating that low levels of 25OHD have a negative impact in diffuse SSc QoL and further studies are needed to define whether vitamin D supplementation can improve health related QoL in these patients. The additional observation of a correlation with severe NC alterations suggests a possible role of 25OHD in the underlying SSc vascular involvement.

OBJECTIVES: The aim of this study was to investigate the impact of asymptomatic vertebral fractures on the quality of life in older women as part of the Sao Paulo Ageing & Health Study. METHODS: This study was a cross-sectional study with a random sample of 180 women 65 years of age or older with or without vertebral fractures. The Quality of Life Questionnaire of the European Foundation for Osteoporosis was administered to all subjects. Anthropometric data were obtained by physical examination, and the body mass index was calculated. Lateral thoracic and lumbar spine X-ray scans were obtained to identify asymptomatic vertebral fractures using a semi-quantitative method. RESULTS: Women with asymptomatic vertebral fractures had lower total scores [61.4(15.3) vs. 67.1(14.2), p = 0.03] and worse physical function domain scores [69.5(20.1) vs. 77.3(17.1), p = 0.02] for the Quality of Life Questionnaire of the European Foundation for Osteoporosis compared with women without fractures. The total score of this questionnaire was also worse in women classified as obese than in women classified as overweight or normal. High physical activity was related to a better total score for this questionnaire (p = 0.01). Likewise, lower physical function scores were observed in women with higher body mass index values (p<0.05) and lower physical activity levels (p,0.05). Generalized linear models with gamma distributions and logarithmic link functions, adjusted for age, showed that lower total scores and physical function domain scores for the Quality of Life Questionnaire of the European Foundation for Osteoporosis were related to a high body mass index, lower physical activity, and the presence of vertebral fractures (p<0.05). CONCLUSION: Vertebral fractures are associated with decreased quality of life mainly physical functioning in older community-dwelling women regardless of age, body mass index, and physical activity. Therefore, the results highlight the importance of preventing and controlling asymptomatic vertebral fractures to reduce their impact on quality of life among older women.

OBJETIVO: Revisar os mecanismos de ações dos glicocorticoides e sua capacidade de induzir osteoporose e déficits de crescimento. FONTES DOS DADOS: A revisão bibliográfica de artigos científicos foi realizada na base de dados MEDLINE e utilizou as palavras-chave agrupadas nas sintaxes “glicocorticoides”, “mineralização óssea”, “crescimento” e “efeitos colaterais”, nos últimos 10 anos, e das referências destes nos reportamos para as publicações mais antigas, mas com os estudos fundamentais para a compreensão do assunto. SÍNTESE DOS DADOS: Destacam-se ações dos glicocorticoides sobre hormônios e citocinas responsáveis pelo crescimento longitudinal. Os efeitos finais dos glicocorticoides sobre o esqueleto são determinados por ações sistêmicas no metabolismo ósseo e por ações diretas desses esteroides nas células ósseas, levando a mudanças no número e função das mesmas e favorecendo a perda óssea. Discutem-se os mecanismos indutores da recuperação dos canais de crescimento e recuperação da massa óssea após a descontinuação dos glicocorticoides; os métodos diagnósticos do metabolismo e mineralização óssea; assim como medidas terapêuticas e preventivas das alterações óssea induzidas pelos glicocorticoides. CONCLUSÃO: A monitorização de cada paciente é essencial para identificação e potencial reversão dos danos associados ao uso crônico de glicocorticoides.

OBJECTIVE: To review the various mechanisms of glucocorticoid action and the ability of these agents to induce osteoporosis and growth deficits. SOURCES: A review of the scientific literature was conducted on the basis of a MEDLINE search using the keywords and descriptors “glucocorticoids,” “bone mineralization,” “growth,” and “side effects” and limited to articles published in the last decade. The references cited by these articles were used to identify relevant older publications, with an emphasis on landmark studies essential to an understanding of the topic. SUMMARY OF THE FINDINGS: Emphasis was placed on the actions of glucocorticoids on the hormones and cytokines that modulate linear growth. The end effects of glucocorticoids on the skeletal system are the result of systemic effects on bone metabolism and of direct actions on bone cells, which alter bone cell counts and predispose to bone loss. The mechanisms underlying catch-up growth and bone mass recovery after discontinuation of glucocorticoid treatment are discussed, followed by a review of diagnostic methods available for assessment of bone metabolism and mineralization and of measures for prevention and management of glucocorticoid-induced bone changes. CONCLUSION: Patient monitoring on a case-by-case basis plays an essential role in detection and, potentially, reversal of the damage associated with chronic glucocorticoid therapy.