Gait speed and functional performance in elderly women with knee osteoarthritis / Velocidade da marcha e desempenho funcional de idosas com osteoartrite de joelho

Abstract Introduction: Knee osteoarthritis is a degenerative and inflammatory disease that causes skeletal muscle dysfunction and induces limitation of functional activities, such as gait. Objective: To assess the relationship between gait speed and functional performance in elderly women with knee osteoarthritis. Methods: 38 elderly women were divided into two groups: knee osteoarthritis group (KOAG) (n = 24, 68 ± 4.42) and control group (CG) (n = 14, 66.35 ± 3.54). Gait speed data was assessed through Qualisys system and functional performance through a checklist of the International Classification of Functioning, Disability and Health (ICF). Results: Comparing with CG (p < 0.05), KOAG patients had lower gait speed (p = 0.004) and worse functional performance in d4500 (walking short distances), d4501 (walking long distances), d4502 (walking on different surfaces), and d4503 (walking around obstacles) ICF categories. By associating gait speed and functional performance in KOAG, significant differences were found in the d4500 (p = 0.019) and d4501 (p = 0.035) categories, but none for either the d4502 (p = 0.511) or d4503 (p = 0.076) categories. Gait speed was negatively correlated with d4500 (rho = -0.585, p = 0.003), d4501 (rho= -0.552, p = 0.005), and d4502 (rho = -0,548, p = 0,006). Conclusion: Gait speed is related to functional performance in elderly women with knee osteoarthritis for the activities of walking short distances, walking long distances, and walking on different surfaces. However, it seems that gait speed is not related to walking around obstacles.

Resumo Introdução: A osteoartrite de joelho (OJ) é uma doença degenerativa e inflamatória que causa incapacidade musculoesquelética, acarretando limitação de atividades funcionais como a marcha. Objetivo: Avaliar a relação entre velocidade da marcha e desempenho funcional em idosas com OJ. Métodos: Trinta e oito idosas foram divididas em grupo com osteoartrite de joelho (GOAJ) (n = 24, 68 ± 4,42) e grupo controle (GC) (n = 14, 66,35 ± 3,54) e avaliadas quanto à velocidade da marcha, utilizando o sistema Qualisys, e quanto ao desempenho funcional através de um checklist da Classificação Internacional de Funcionalidade, Incapacidade e Saúde (CIF). Resultados: GOAJ apresentou menor velocidade da marcha (p = 0,004) e pior desempenho funcional nas categorias da CIF d4500 (andar distâncias curtas), d4501 (andar distâncias longas), d4502 (andar em superfícies diferentes) e d4503 (andar contornando obstáculos) em comparação ao GC (p < 0,05). Ao associar velocidade da marcha e desempenho funcional do GOAJ, encontrou-se diferenças nas categorias d4500 (p = 0,019) e d4501 (p = 0,035), mas não em relação às categorias d4502 (p = 0,511) e d4503 (p = 0,076). Velocidade da marcha correlacionou-se negativamente com d4500 (rho = - 0,585, p = 0,003), d4501 (rho = -0,552, p = 0,005) e d4502 (rho = -0,548, p = 0,006). Conclusão: Existe relação entre velocidade da marcha e desempenho funcional de idosas com OJ quanto às atividades de andar distâncias curtas e longas e sobre superfícies diferentes; no entanto, a velocidade da marcha parece não interferir na atividade de andar contornando obstáculos.

Reduced-dose intensity therapy for pediatric lymphoblastic leukemia: long-term results of the Recife RELLA05 pilot study.

Treatment-related mortality is common among children with acute lymphoblastic leukemia (ALL) treated in poor-resource settings. We applied a simplified flow cytometric assay to identify patients with precursor B-cell ALL (B-ALL) at very low risk (VLR) of relapse and treated them with a reduced-intensity treatment plan (RELLA05). VLR criteria include favorable presenting features (age ≥ 1 and < 10 years), white blood cell count of <50 ×109/L, lack of extramedullary leukemia, and minimal residual disease level of <0.01% on remission induction day 19. Except for 2 doses of daunorubicin, treatment of patients with VLR B-ALL consisted of a combination of agents with relatively low myelotoxicity profiles, including corticosteroids, vincristine, L-asparaginase, methotrexate, and 6-mercaptopurine. Cyclophosphamide, systemic cytarabine, and central nervous system radiotherapy were not used. Of 454 patients with ALL treated at the Instituto de Medicina Integral Professor Fernando Figueira in Recife, Brazil, between December 2005 and June 2015, 101 were classified as having VLR B-ALL. There were no cases of death resulting from toxicity or treatment abandonment during remission induction. At a median follow-up of 6.6 years, there were 8 major adverse events: 6 relapses, 1 treatment-related death (from septicemia) during remission, and 1 secondary myeloid leukemia. The estimated 5-year event-free and overall survival rates were 92.0% ± 3.9% and 96.0% ± 2.8%, respectively. The 5-year cumulative risk of relapse was 4.24% ± 2.0%. The treatment was well tolerated. Episodes of neutropenia were of short duration. Patients with B-ALL selected by a combination of presenting features and degree of early response can be successfully treated with a mildly myelosuppressive chemotherapy regimen.

Effects of a therapeutic exercises program associated with pompage technique on pain, balance and strength in elderly women with knee osteoarthritis / Efeitos de um programa de exercícios terapêuticos associado à técnica de pompage sobre dor, equilíbrio e força muscular em idosas com osteoartrite de joelho

Abstract Introduction: Knee Osteoarthritis (OA) affects mainly elderly, being characterized by arthralgia, stiffness and strength and balance deficits. Scientific evidence suggests beneficial effects of exercise therapy on these changes, but lacks detailed protocols. In addition, there were published studies on effects of therapeutic exercise associated with pompage that were not located. Objective: To investigate the effects of a therapeutic exercise program associated with pompage on pain, balance and muscle strength in elderly women with knee osteoarthritis. Methods: A randomized pilot clinical trial that included 22 women (60 - 80 years) diagnosed with knee OA, randomized and allocated by simple raffle into two groups: intervention and control. Intervention group (strengthening and balance exercises and knee pompage) performed two sessions per week for 12 weeks. The control group received educational lectures, they were evaluated before and after 12 weeks: arthralgia- subscale pain of the Western Ontario and McMaster Universities Osteoarthritis Index questionnaire (WOMAC); postural stability- postural balance protocol by Biodex Balance SD and muscle strength- concentric peak torque of the knee extensor by isokinetic dynamometer. The Independent Student t test was used for intergroup analysis. Results: The intervention group compared with the control showed better results for the outcomes pain, balance and muscle strength after 12 weeks. However, the difference was statistically significant (p < 0.05) for levels of antero-posterior oscillation (DM -0.28, 95% CI -0.54 a -0.02; p = 0.035) and global oscillation (DM -0.36, 95% CI -0.68 a -0.04; p = 0.028). Conclusion: The intervention had a positive effect on postural balance in elderly women with knee osteoarthritis.

Resumo Introdução: Osteoartrite (OA) de joelhos acomete principalmente idosas, caracterizando-se por artralgia, rigidez, déficit de força e do equilíbrio. Evidências científicas apontam efeitos benéficos da terapia por exercícios sobre estas alterações, porém carecem de protocolos detalhados. Estudos sobre efeitos de exercícios terapêuticos associados à pompage também não foram localizados. Objetivo: Investigar efeitos de um programa de exercícios terapêuticos associados à pompage sobre dor, equilíbrio e força muscular em idosas com OA de joelhos. Métodos: Ensaio clínico randomizado piloto que incluiu 22 idosas (60 - 80 anos) com diagnóstico de OA de joelhos, sendo randomizadas por sorteio simples em 2 grupos: intervenção e controle. Grupo intervenção (exercícios de fortalecimento e equilíbrio associados à pompage) realizou 2 sessões semanais, por 12 semanas. Grupo controle recebeu palestras educativas. Foram avaliados antes e após 12 semanas: artralgia- subescala dor do questionário Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC); equilíbrio postural- protocolo estabilidade postural do Biodex Balance SD e força muscular- pico de torque concêntrico dos extensores dos joelhos pelo dinamômetro isocinético. Utilizou-se o teste t Student independente para análise intergrupos. Resultados: Grupo intervenção comparado ao controle apresentou melhores resultados para os desfechos dor, equilíbrio e força muscular após as 12 semanas. Entretanto, a diferença foi estatisticamente significativa (p < 0.05) apenas para níveis de oscilação ântero-posterior (DM -0.28, 95% IC -0.54 a -0.02; p = 0.035) e global (DM -0.36, 95% IC -0.68 a -0.04; p = 0.028). Conclusão: A intervenção teve um efeito positivo sobre o equilíbrio postural em idosas com OA de joelhos.

Efeitos de exercícios resistidos, de equilíbrio e alongamentos sobre a mobilidade funcional de idosas com baixa massa óssea / Effects of resistance, balance and stretching on functional mobility in elderly with low bone mass

O envelhecimento é caracterizado por degeneração da função neuromuscular traduzida por diminuição da força muscular, do equilíbrio e da coordenação. Este estudo visou avaliar os efeitos de programas de exercícios resistidos, de equilíbrio e de alongamentos sobre a mobilidade funcional em idosas com baixa massa óssea. 36 voluntárias foram aleatorizadas em dois grupos: G1 [n=18; 69,4 ± 6,8 anos] e G2 [n=18; 69,4 ± 5,7 anos] e avaliadas através do Teste Sentar-levantar com 5 repetições (STS-5), Teste de Caminhada de seis metros (SMW) e Teste de Alcance funcional (FRT). O programa de exercício foi aplicado durante 4 meses, 2 vezes por semana, com treinamento de força muscular e mobilidade funcional para G1, e alongamentos e palestras informativas para G2. Após a intervenção os indivíduos de ambos os grupos diminuíram o tempo de realização do STS-5 (G1= 12,6±3,5 vs. 8,4±1,3 s, p=0,01; G2= 12,2±2,6 vs. 8,1±1,3 s, p= 0,00), bem como do SMW (G1= 4,4±1,2 vs. 3,9±0,8 s, p=0,014; G2= 4,2±0,5 vs. 3,6±0,4s, p= 0,000), enquanto se evidenciou aumento do alcance no FRT (G1=26,4±4,9 vs. 31,6±5,0 cm, p= 0,001; G2= 24,6±4,8 vs. 30,3±4,3 cm, p=0,001). Os nossos resultados permitem concluir que foram encontradas melhoras em ambos os grupos estudados e que os exercícios físicos propostos são capazes de trazer benefícios para idosas com baixa massa óssea, através de melhora na sua mobilidade funcional.

Aging is characterized by neuromuscular function degeneration reflected on a decrease of muscle strength, balance and coordination. This study aimed to evaluate the effects of resistance, balance and stretching exercise programs on functional mobility in community-dwelling elderly with low bone mass. 36 volunteers were randomized into two groups: G1 [n=18; 69.4 ± 6.8 years] e G2 [n=18; 69.4 ± 5.7 years] which were evaluated using the Sit-to-stand-5 Test (STS-5), Six metre walk test (SMW) and Functional Reach Test (FRT). The exercise program was applied for 4 months, two times per week, with muscle strength and functional mobility training for G1, and stretching and informative lectures for G2. After the intervention, individuals from both groups decreased their time of performance in STS-5 (G1= 12.6±3.5 vs. 8.4±1.3 s, p=0.01; G2= 12.2±2.6 vs. 8.1±1.3 s, p= 0.00), as well as in SMW (G1= 4.4±1.2 vs. 3.9±0.8 s, p=0.014; G2= 4.2±0.5 vs. 3.6±0.4 s, p= 0,000), while an increase in the reach of FRT was evident (G1 = 26.4±4.9 vs. 31.6±5.0 cm, p= 0.001; G2 = 24.6±4.8 vs. 30.3±4.3 cm, p=0.001). The results indicate that improvements were found in both studied groups and that the proposed exercise programs are able to provide benefits for elderly with low bone mass, throughout the improvement in their functional mobility.

Targeted genomic sequencing of pediatric Burkitt lymphoma identifies recurrent alterations in antiapoptotic and chromatin-remodeling genes.

To ascertain the genetic basis of pediatric Burkitt lymphoma (pBL), we performed clinical-grade next-generation sequencing of 182 cancer-related genes on 29 formalin-fixed, paraffin embedded primary pBL samples. Ninety percent of cases had at least one mutation or genetic alteration, most commonly involving MYC and TP53. EBV(-) cases were more likely than EBV(+) cases to have multiple mutations (P < .0001). Alterations in tumor-related genes not previously described in BL were identified. Truncating mutations in ARID1A, a member of the SWI/SNF nucleosome remodeling complex, were seen in 17% of cases. MCL1 pathway alterations were found in 22% of cases and confirmed in an expanded panel. Other clinically relevant genomic alterations were found in 20% of cases. Our data suggest the roles of MCL1 and ARID1A in BL pathogenesis and demonstrate that comprehensive genomic profiling may identify additional treatment options in refractory disease.

[Effects of a group exercise program on handgrip strength of elderly women with low bone mass]. / Efeitos de um programa de exercícios em grupo sobre a força de preensão manual em idosas com baixa massa óssea.

OBJECTIVES: To evaluate the effects of an exercise program on handgrip strength (HS) in elderly women with low bone mass. SUBJECTS AND METHODS: Thirty-six elderly women were randomized to the intervention group - GI (n = 18) and control group - GC (n = 18). Participants were evaluated by means of a HS test, using a handgrip dynamometer. GI performed strength, balance and functional mobility exercises, and GC performed stretching exercises. Both groups had sessions twice a week for 50 minutes, during 4 months. RESULTS: GI had a significant increase in handgrip strength equal to 31.38%. No differences were observed in GC. There were correlations between HS test and bone mineral density (BMD) of the femoral neck (r = 0.582, p = 0.003) and total femur (r = 0.485, p = 0.01). CONCLUSION: Results indicate a propensity to increase elderly HS, and showed significant correlations between HS and BMD.

Efeitos de um programa de exercícios em grupo sobre a força de preensão manual em idosas com baixa massa óssea / Effects of a group exercise program on handgrip strength of elderly women with low bone mass

OBJETIVOS: Avaliar os efeitos de um programa de exercícios sobre a força de preensão ma­nual (FPM) em idosas com baixa massa óssea. SUJEITOS E MÉTODOS: Trinta e seis idosas foram randomizadas em: grupo intervenção - GI (n = 18) e grupo controle - GC (n = 18), avaliadas pelo teste de FPM, utilizando-se um dinamômetro de mão. O GI realizou exercícios de força muscular, equilíbrio e mobilidade funcional. O GC realizou alongamentos. Ambos os grupos realizaram duas sessões semanais de 50 minutos, durante quatro meses. RESULTADOS: O GI apresentou aumento da FPM em 31,38% (p = 0,00). O GC não mostrou diferença. Houve correlações entre a FPM e a densidade mineral óssea (DMO) do colo do fêmur (r = 0,582, p = 0,003) e do fêmur total (r = 0,485, p = 0,01). CONCLUSÃO: Os resultados sugerem uma tendência ao incremento da FPM de idosas e mostraram correlações significantes entre a FPM e a DMO.

OBJECTIVES: To evaluate the effects of an exercise program on handgrip strength (HS) in elderly women with low bone mass. SUBJECTS AND METHODS: Thirty-six elderly women were randomized to the intervention group - GI (n = 18) and control group - GC (n = 18). Participants were evaluated by means of a HS test, using a handgrip dynamometer. GI performed strength, balance and functional mobility exercises, and GC performed stretching exercises. Both groups had sessions twice a week for 50 minutes, during 4 months. RESULTS: GI had a significant increase in handgrip strength equal to 31.38%. No differences were observed in GC. There were correlations between HS test and bone mineral density (BMD) of the femoral neck (r = 0.582, p = 0.003) and total femur (r = 0.485, p = 0.01). CONCLUSION: Results indicate a propensity to increase elderly HS, and showed significant correlations between HS and BMD.

Association between lean mass and handgrip strength with bone mineral density in physically active postmenopausal women.

The present study evaluated 117 physically active postmenopausal women (67.8+/-7.0yr) who performed neuromotor physical tests (strength, balance, and mobility). Body composition (lean mass [g], fat mass [g], and % fat) and bone mineral density (BMD) of lumbar spine (L1-L4), femoral neck, and total body were measured by dual-energy X-ray absorptiometry. Following the World Health Organization criteria, osteoporosis was found in at least 1 analyzed site in 33 volunteers (28.2%): 30 (25.6%) in lumbar spine and 9 (7.7%) in femoral neck. Body weight was strongly and positively related to BMD in all sites, but the most important component of body composition was lean mass, also significantly related to all BMD sites, whereas fat mass was weakly related to the femoral neck BMD. Percent fat did not correlate with any BMD site. Of all the physical tests, the handgrip strength was most importantly related to lumbar spine, femoral neck, and total body (r=0.49, p<0.001; r=0.56, p<0.001; and r=0.52, p<0.001, respectively). The static body balance presented a weak but significant positive correlation only with lumbar spine. Our results suggest that strategies aiming to improve muscle strength and lean mass must contribute to the bone health of physically active postmenopausal women.

Treatment of vitamin D deficiency increases lower limb muscle strength in institutionalized older people independently of regular physical activity: a randomized double-blind controlled trial.

AIMS: To investigate the effects of a 6-month supplementation with calcium and cholecalciferol on biochemical parameters and muscle strength of institutionalized elderly. METHODS: This prospective, double-blind, placebo-controlled, randomized trial included Brazilian institutionalized people > or =60 years of age receiving a 6-month supplementation (December to May) of daily calcium plus monthly placebo (calcium/placebo group) or daily calcium plus oral cholecalciferol (150,000 IU once a month during the first 2 months, followed by 90,000 IU once a month for the last 4 months; calcium/vitamin D group). Fasting blood samples for 25(OH)D, PTH and calcium determination were collected (n = 56) and muscle tests were performed (n = 46) to measure the strength of hip flexors (SHF) and knee extensors (SKE) before (baseline) and after the 6-month intervention (6 months). RESULTS: Due to seasonal variations, serum 25(OH)D significantly enhanced in both groups after treatment, but the calcium/vitamin D group had significantly higher 25 (OH)D levels than the calcium/placebo group (84 vs. 33%, respectively; p < 0.0001). No cases of hypercalcemia were observed. While the calcium/placebo group showed no improvement in SHF and SKE at 6 months (p = 0.93 and p = 0.61, respectively), SHF was increased in the calcium/vitamin D group by 16.4% (p = 0.0001) and SKE by 24.6% (p = 0.0007). CONCLUSIONS: The suggested cholecalciferol supplementation was safe and efficient in enhancing 25(OH)D levels and lower limb muscle strength in the elderly, in the absence of any regular physical exercise practice.

Non-Hodgkin's lymphoma in childhood: clinical and epidemiological characteristics and survival analysis at a single center in Northeast Brazil.

OBJECTIVE: To describe the clinical and demographic characteristics of non-Hodgkin's lymphoma patients diagnosed at the Pediatric Oncology Unit at the Instituto Materno-Infantil Professor Fernando Figueira (IMIP) over a 9-year period, and also to describe their survival rates and possible associations between the survival rates and the clinical and demographic characteristics analyzed in the study. METHODS: This was a cross-sectional study. Data were collected by a retrospective review of the charts of all 110 patients admitted to our unit during the period of May 1994 through May 2003. Probability of survival was calculated in accordance with the techniques of Kaplan-Meier, using log rank to evaluate differences between the groups. RESULTS: The average age was 6.1 years. The male/female ratio was 2.4:1. The most frequent histological subtype was Burkitt's lymphoma. The majority of patients had been diagnosed with advanced disease (stage III or IV of Murphy's Classification) and was from rural areas. Family income per capita was lower than 1/2 minimum wage in 36.4% of cases; maternal illiteracy was observed in 12.7% of cases. The 5-year overall survival and disease-free survival rates were 70+/-4% and 68.4+/-4%, respectively. None of the clinical-demographic characteristics had a significant association with the probability of survival (p > 0.05). CONCLUSION: Children admitted to the IMIP seemed to be affected by non-Hodgkin lymphoma at a younger age, with a higher incidence of Burkitt's lymphoma and with survival rates similar to those described in the literature of developed countries. No clinical demographic characteristics had a statistically significant association with prognosis

Linfoma não-Hodgkin na infância: características clínico-epidemiológicas e avaliação de sobrevida em um único centro no Nordeste do Brasil / Non-Hodgkin's lymphoma in childhood: clinical and epidemiological characteristics and survival analysis at a single center in Northeast Brazil

OBJETIVO: Descrever o perfil clínico-epidemiológico dos pacientes portadores de linfoma não-Hodgkin diagnosticados no Serviço de Oncologia Pediátrica do Instituto Materno-Infantil Professor Fernando Figueira em um período de 9 anos, bem como descrever sobrevida e possíveis associações prognósticas com as variáveis clínico-epidemiológicas estudadas. MÉTODOS: Estudo descritivo de corte transversal, realizado através da análise dos prontuários de 110 pacientes com linfoma não-Hodgkin admitidos na instituição no período de maio de 1994 a maio de 2003. As sobrevidas global e livre de doença foram analisadas através da técnica de Kaplan-Meier, e o teste de log rank foi utilizado para avaliar diferenças entre os grupos. RESULTADOS: A idade média foi de 6,1 anos, e a relação masculino-feminino, 2,4:1. O subtipo histológico mais freqüente foi o linfoma de Burkitt. A maioria dos pacientes foi diagnosticada em estádio III e IV da classificação de Murphy e provinha da zona rural. Renda familiar per capita inferior a 1/2 salário mínimo foi observada em 36,4 por cento, e analfabetismo materno, em 12,7 por cento dos casos. A probabilidade de sobrevida global e livre de doença aos 5 anos foi de 70±4 por cento e 68±4 por cento, respectivamente. Nenhuma das variáveis clínico-epidemiológicas analisadas mostrou associação estatística significante com a probabilidade de sobrevida dos pacientes (p > 0,05). CONCLUSÃO: Observamos incidência mais elevada do subtipo Burkitt e de crianças acometidas em idade mais jovem quando comparada à descrita em literatura estrangeira. A sobrevida observada aproximou-se dos resultados descritos pelos principais grupos cooperativos de tratamento de câncer infantil. As variáveis clínico-epidemiológicas analisadas não apresentaram associação prognóstica estatística significante.

OBJECTIVE:To describe the clinical and demographic characteristics of non-Hodgkin's lymphoma patients diagnosed at the Pediatric Oncology Unit at the Instituto Materno-Infantil Professor Fernando Figueira (IMIP) over a 9-year period, and also to describe their survival rates and possible associations between the survival rates and the clinical and demographic characteristics analyzed in the study. METHODS:This was a cross-sectional study. Data were collected by a retrospective review of the charts of all 110 patients admitted to our unit during the period of May 1994 through May 2003. Probability of survival was calculated in accordance with the techniques of Kaplan-Meier, using log rank to evaluate differences between the groups. RESULTS:The average age was 6.1 years. The male/female ratio was 2.4:1. The most frequent histological subtype was Burkitt's lymphoma. The majority of patients had been diagnosed with advanced disease (stage III or IV of Murphy's Classification) and was from rural areas. Family income per capita was lower than 1/2 minimum wage in 36.4 percent of cases; maternal illiteracy was observed in 12.7 percent of cases. The 5-year overall survival and disease-free survival rates were 70±4 percent and 68.4±4 percent, respectively. None of the clinical-demographic characteristics had a significant association with the probability of survival (p > 0.05). CONCLUSION: Children admitted to the IMIP seemed to be affected by non-Hodgkin lymphoma at a younger age, with a higher incidence of Burkitt's lymphoma and with survival rates similar to those described in the literature of developed countries. No clinical demographic characteristics had a statistically significant association with prognosis.

Comparison of treatment outcomes of childhood Hodgkin lymphoma in two US centers and a center in Recife, Brazil.

BACKGROUND: Pediatric Hodgkin lymphoma (HL) has a cure rate of more than 80% in high-income countries (HIC). However, more than 80% of the world's children live in low-income countries (LIC), where the cure rate is often much lower. PROCEDURE: We compared the outcome of HL of 371 patients treated at two pediatric oncology centers in the US to that of 62 patients treated at one center in Recife, Brazil (IMIP) to determine whether the same treatment strategy should be used in both high-income and LIC. The logrank test was used to compare event-free and overall survival. RESULTS: The percentages of patients with unfavorable disease at each center were similar (P = 0.72). Patients with favorable disease at IMIP had estimated 5-year survival rates comparable to those of the US centers (100% and 99%, respectively). Among patients with unfavorable disease, those treated at IMIP had a 5-year event-free survival (EFS) rate of 60%, compared to 78% at the US centers; (P = 0.08). The 5-year survival estimate after relapse was 25% at IMIP versus 61% at the US centers (P = 0.08). The 5-year overall survival for patients with unfavorable disease was 72% at IMIP versus 90% at the US centers (P = 0.01). CONCLUSIONS: Intensive frontline therapy should be considered for patients with unfavorable HL in LIC where the relapse rate is high and the salvage rate is low, provided that supportive care is adequate.

[Role of vitamin D in the neuro-muscular function]. / Papel da vitamina D na função neuro-muscular.

Through its action in the kidney, intestines, bone and parathyroid glands vitamin D is a major regulator of calcium homeostasis and for the development of a healthy skeleton. Moreover, receptors for this hormone are present in almost all body tissues and other actions which are not related to the mineral metabolism have been imputed to it. In the skeletal muscle cell, vitamin D acts through the classic mechanism of binding to a nuclear receptor and also by binding to a membrane receptor, carrying out actions that involve calcium transport, protein synthesis and kinetics of muscle contraction. Clinically, vitamin D deficiency, which is very common among the elderly, including the ones in our country, has been related to an increase in the incidence of falls, as well as the reduction of muscle strength and deterioration of body sway, evaluated by the oscillation of the body in the erect position. On the other hand, it has been demonstrated that supplementation of calcium associated to vitamin D in deficient elderly contributes to the improvement of these aspects of the neuro-muscular function. In this review, the mechanisms involved in the association between vitamin D and neuro-muscular function will be discussed, as well as the supplementation of vitamin D and calcium to prevent non-vertebral osteoporotic fractures under the perspective of the neuro-muscular effects.

Papel da vitamina D na função neuro-muscular / Role of vitamin D in the neuro-muscular function

A vitamina D, através de suas ações no intestino, rim, osso e glândulas paratiróides, é um hormônio fundamental para a homeostase do cálcio e para o desenvolvimento de um esqueleto saudável. Além disso, receptores deste hormônio podem ser encontrados em quase todos os tecidos do organismo e outras ações não relacionadas ao metabolismo mineral têm sido imputadas a ele. Na célula muscular esquelética, a vitamina D atua através do mecanismo clássico de ligação a um receptor nuclear e também através da ligação a um receptor de membrana, realizando ações que envolvem o transporte de cálcio, a síntese protéica e a velocidade de contração muscular. Clinicamente, a deficiência de vitamina D, que é bastante comum em idosos, inclusive em nosso país, tem sido relacionada a um aumento da incidência de quedas, a uma diminuição da força muscular e a uma deterioração do equilíbrio, avaliada pela oscilação do corpo na postura ereta. Por outro lado, tem sido demonstrado que a suplementação associada de cálcio e vitamina D em idosos deficientes contribui para melhoria destes aspectos da função neuro-muscular. Nesta revisão, serão discutidos os mecanismos conhecidos envolvidos na associação entre vitamina D e função neuro-muscular, e também a suplementação de vitamina D e cálcio na prevenção de fraturas osteoporóticas não-vertebrais sob a perspectiva dos efeitos neuro-musculares.

Establishment of a pediatric oncology program and outcomes of childhood acute lymphoblastic leukemia in a resource-poor area.

CONTEXT: The cure rate for childhood acute lymphoblastic leukemia (ALL) differs markedly between developed and developing countries. OBJECTIVE: To assess the effect of a multidisciplinary team approach and protocol-based therapy on the event-free survival of children with ALL in an area with limited resources. DESIGN, POPULATION, AND SETTING: A retrospective cohort study at a pediatric hospital in the resource-poor city of Recife, Brazil. We reviewed medical records of the outcomes of 375 children with ALL diagnosed between 1980 and 2002. Eighty-three children were diagnosed in the early period (1980-1989), in the absence of a dedicated pediatric oncology unit, protocol-based therapy, specially trained nurses, 24-hour on-site physician coverage, and ready access to intensive care. Seventy-eight children were treated (all according to protocol) during the middle period (July 1994 to March 1997). During the recent period (April 1997 to December 2002), 214 children were treated with protocol in a dedicated pediatric oncology unit staffed 24 hours by pediatric oncologists and oncology nurses. Improvements were implemented gradually during the middle period and were completed during the recent period. MAIN OUTCOME MEASURE: Event-free survival was estimated by the Kaplan-Meier method. Events included death from toxicity, disease progression or relapse, and abandonment of treatment. RESULTS: The 5-year event-free survival improved steadily: 32% (95% CI, 21%-43%) in the early period, 47% (95% CI, 36%-58%) in the middle period, and 63% (95% CI, 55%-71%) in the recent period. The probability of cause-specific treatment failure in the early, middle, and late periods, respectively, within 1 year of diagnosis was 14% vs 3.8% vs 3.3% for relapse; 6.0% vs 12% vs 9.8% for death from infection; 2.4% vs 13% vs 4.2% for death from noninfectious toxicity; and 16% vs 1.3% vs 0.5% for abandonment of therapy. CONCLUSION: Treatment of childhood ALL in a dedicated pediatric oncology unit using a comprehensive multidisciplinary team approach, protocol-based therapy, and local support and funding is associated with improved outcomes in a resource-poor area.

Treatment of metastatic rhabdoid tumor of the kidney.

Metastatic rhabdoid tumor of the kidney (RTK) is a highly lethal malignancy; only one survivor with stage 4 disease has been reported. The authors reviewed the cases of two patients with metastatic RTK who had excellent responses to therapy. Both patients were treated with radiation therapy and alternating courses of ifosfamide, carboplatin, and etoposide (ICE) and vincristine, doxorubicin, and cyclophosphamide (VDC). The patients are without evidence of disease at 24 months and 12 months from the detection of metastasis. Alternating courses of ICE and VDC have activity against metastatic RTK. This combination of agents warrants prospective investigation in clinical trials.

Síndrome de Horner após intervenção cirúrgica para exérese de neuroblastoma cervivo-torácico / Horner's syndrome after surgical intervention for excision the cervical thoracic neuroblastoma

Objetivo: Relatar a ocorrência de síndrome de Horner após intervenção cirúrgica para exérese de neuroblastoma cervico-torácico. Local: Fundação Altino Ventura - Recife - PE - Brasil. Método: Relato de Caso. Conclusão: Salienta-se que neste caso a criança já tinha o diagnóstico anterior do neuroblastoma, mas a síndrome de Horner pode ser o primeiro sinal da doença. A ptose palpebral se deve a uma paresia do músculo tarsal de Muller, sendo portanto discreta. Como o eixo visual é livre e a acuidade visual preservada é necessário uma inspeção e biomicroscopia rigorosas na presença de ptose a fim de evitar que a síndrome de Horner passe desapercebida.

Effect of malnutrition at the time of diagnosis on the survival of children treated for cancer in El Salvador and Northern Brazil

Purpose: To investigate the relationship between survival and malnutrition at the time of diagnosis among children treated for cancer in two developing countries. Patients and Methods: We studied 443 children treated for cancer between 1995 and 1998 at two centers in San Salvador, El Salvador, and Recife, Brazil. Median age at diagnosis was 4.9 years; 283 children had leukemia and 260 had solid tumors. Z scores were calculated for weight for age (WAZ), height for age (HAZ), and weight for height (WHZ) at diagnosis. Z scores < -2 indicated malnutrition. Patients were also stratified by low-risk disease (solid tumors: stage I, stage II, or localized; acute lymphocytic leukemia: WBC count < 25,000/uL, negative CNS, no mediastinal mass and age > 1 and < 10 years) and high-risk disease (all other patients, including those with acute or chronic myelocytic leukemia). Results: Z scores indicated malnutrition in 15.7 por cento (WHZ), 23.5 por cento (WAZ), and 22.8 por cento (HAZ) of patients. Z score was not significantly related to overall survival rates, to survival rates analyzed by type of malignancy or risk status, or to survival rates at the end of the first month of treatment. Conclusions: We found no relationship between nutritional status and survival in these patients. This implies that future protocols for use in developing countries can be designed to provide optimal treatment intensity despite the high incidence of malnutrition

Predominância do subtipo Linfoma de Burkitt entre crianças com Linfoma Näo-Hodgkin no nordeste do Brasil / Predominance of the Burkitt Lymphoma subtype among children with Non-Hodgkin Lymphoma in northeast Brazil

Noventa e oito pacientes portadores de Linfoma näo Hodgkin (LNH), atendidos no serviäo de oncologia pediátrica do Hospital Baräo de Lucena (HBL) no período de 1980 a 1987, foram estudados, 69 pacientes do sexo masculino e 29 do sexo feminino. A idade média foi de 6 anos. A maioria apresentava o subtipo de células pequenas näo clivadas (Burkitt) (n=8), nove tinha linfoma linfoblástico e um tinha linfoma de células grandes. Oito dos 11 (73 por cento) casos de linfoma de Burkitt examinados foram positivos par o vírus de Epstein-Barr. O abdome foi o local primário mais comumda doença (84 por cento). O envolvimento da mandíbula foi raro (3 por cento). Ocorreu envolvimento da medula óssea e do sistema nervoso central e 10 e 4 por cento dos pacientes, respectivamente. A maioria das crianças se apresentaram com doença em estadio avançado (estadio III/IV, 87 por cento). Aqueles com linfoma de Burkitt em estadio avançado tiveram um resultado significativamente pior do que aqueles com doença em estadio limitado...