ABSTRACT
Primary Hyperparathyroidism (PHPT) often leads to bone loss, even in its asymptomatic presentations. Trabecular Bone Score (TBS) is a method to assess the trabecular bone structure of the spine. This study aimed to evaluate TBS measurements combined with Dual X-ray Absorptiometry (DXA) values in the search for more accurate bone fragility risk assessment among PHPT patients. From 2017 to 2019, patients diagnosed with PHPT (nâ¯=â¯64), before surgery, were invited to participate in this study. Bone mineral density (BMD) by DXA at the lumbar spine, total hip, femoral neck, distal third radius, and TBS were determined in patients and controls (nâ¯=â¯63). The vertebral fracture was defined using the Genant method in vertebral images by DXA and vertebral fracture assessment (VFA). Patients and controls did not differ in age, sex, menopausal status, or body mass index (BMI). The PHPT patients presented significantly lower BMD values than the controls in all sites evaluated. The TBS measurements were also statistically lower in PHPT patients than controls (mean TBS PHPTâ¯=â¯1.233 vs TBS controlsâ¯=â¯1.280, pâ¯=â¯0.044). Osteoporosis was observed in 50% of PHPT patients and 26.6% of controls (pâ¯=â¯0.02). However, lumbar spine T-Score < -2.5 was observed only in 21.8% of PHPT patients. Vertebral fractures were detected in nine individuals (14%) from the PHPT group and four (6.3%) in the controls (pâ¯=â¯0.24). The TBS area under the curve (AUC) was higher than DXA AUC in all sites, for vertebral fracture assessment. The TBS AUC was significant in the PHPT group (0.75, 95% CI 0.62 - 0.88, pâ¯=â¯0.02) and not significant in the DXA analysis. The ROC curve showed that TBS values < 1.187 are associated with a significantly higher risk of vertebral fracture among PHPT patients (pâ¯=â¯0.02). The TBS used as a complement to DXA measurements is a useful tool which may better assess fragility risk among PHPT patients.
Subject(s)
Hyperparathyroidism, Primary , Osteoporotic Fractures , Absorptiometry, Photon , Bone Density , Cancellous Bone/diagnostic imaging , Humans , Hyperparathyroidism, Primary/complications , Hyperparathyroidism, Primary/diagnostic imaging , Lumbar Vertebrae/diagnostic imaging , Osteoporotic Fractures/diagnostic imagingABSTRACT
INTRODUCTION: Hyperparathyroidism is a frequent complication of chronic kidney disease (CKD). Total parathyroidectomy (PTX) with parathyroid tissue autotransplantation (AT) is a treatment option in those individuals that do not respond to clinical management. OBJECTIVE: To evaluate grafted parathyroid tissue response during induced hypocalcemia among CKD patients who underwent total PTX with AT. METHODS: Eighteen patients with renal hyperparathyroidism were submitted to total PTX with parathyroid AT selected by stereomicroscopy between April and October 2008. Eleven (eight with successful kidney transplantation, 2 in peritoneal dialysis and 1 in hemodialysis) were clinically stable and eligible for testing. Hypocalcemia was induced using sodium bicarbonate infusion in 5 healthy controls and in patients 6-12 months after surgery. RESULTS: Among controls, hypocalcemia elicited a major rise in intact PTH (iPTH) levels 4 minutes after bicarbonate infusion. In patients, a significant decrease in ionized calcium concentration was observed [from 1.17 ± 0.12 to 1.09 ± 0.11 mean (± SE) mmol/L] in the 4th minute (p < 0.001) illustrating the nadir point. In the 10thminute, ionized calcium did not show a statistical increase compared to the 4th minute (p = 0.451). The iPTH levels ranged from 34.8 ± 18.6 to 34.1 ± 18.8 pg/mL (similar values between base line and 4thminute p = 0.087) and did not change in the 10th minute (33.3 ± 19,6 pg/ mL p = 0.693). CONCLUSION: Among CKD patients tested 6-12 months after surgery, grafted parathyroid tissue revealed a blunted secretory capacity during bicarbonate induced hypocalcemia with no changes in iPTH levels.
Subject(s)
Hyperparathyroidism, Secondary/surgery , Parathyroid Glands/transplantation , Parathyroid Hormone/metabolism , Parathyroidectomy , Adult , Female , Humans , Hyperparathyroidism, Secondary/etiology , Hypocalcemia/physiopathology , Male , Middle Aged , Parathyroidectomy/methods , Renal Insufficiency, Chronic/complications , Transplantation, AutologousABSTRACT
Resumo Introdução: O hiperparatireoidismo é uma complicação frequente da doença renal crônica (DRC). A paratireoidectomia (PTX) total com autotransplante (AT) de tecido paratireoideano é uma opção terapêutica para os indivíduos que não respondem ao manejo clínico. Objetivo: Avaliar a resposta do tecido paratireoideano enxertado durante hipocalcemia induzida em pacientes portadores de DRC submetidos à PTX total com AT. Métodos: Dezoito pacientes portadores de hiperparatiroidismo associado à DRC foram submetidos à PTX total com AT de tecido paratireoideano selecionado por estereomicroscopia entre Abril e Outubro de 2008 em nosso serviço. Onze indivíduos (oito com transplante renal funcionante, 2 em diálise peritoneal e 1 em hemodiálise) apresentavam boa condição clínica e foram elegíveis para o teste. Induziu-se hipocalcemia por infusão de bicarbonato de sódio em 5 controles normais e nos pacientes 6-12 meses após a PTX. Resultados: A hipocalcemia determinou um aumento importante dos níveis de PTH intacto (iPTH) no grupo controle 4 minutos após a infusão de bicarbonato. Nos pacientes, houve uma redução significativa do cálcio ionizado [de 1,17 ± 0,12 para 1,09 ± 0,11 (media ± EP) mmol/L] no 4º minuto (p < 0,001) ilustrando o nadir do teste. No 10º minuto não houve elevação do cálcio ionizado comparado ao 4º minuto (p = 0,451). Os níveis de iPTH foram de 34,8 ± 18,6 para 34,1 ± 18,8 pg/mL (valor basal semelhante ao 4º minuto p = 0,087) e se mantiveram no 10º minuto (33,3 ± 19,6 pg/mL p = 0,693). Conclusão: Em pacientes portadores de DRC testados 6-12 meses depois da cirurgia, o enxerto de tecido paratireoideano revelou incapacidade de resposta à hipocalcemia induzida por bicarbonato sem mudança dos níveis de iPTH.
Abstract Introduction: Hyperparathyroidism is a frequent complication of chronic kidney disease (CKD). Total parathyroidectomy (PTX) with parathyroid tissue autotransplantation (AT) is a treatment option in those individuals that do not respond to clinical management. Objective: To evaluate grafted parathyroid tissue response during induced hypocalcemia among CKD patients who underwent total PTX with AT. Methods: Eighteen patients with renal hyperparathyroidism were submitted to total PTX with parathyroid AT selected by stereomicroscopy between April and October 2008. Eleven (eight with successful kidney transplantation, 2 in peritoneal dialysis and 1 in hemodialysis) were clinically stable and eligible for testing. Hypocalcemia was induced using sodium bicarbonate infusion in 5 healthy controls and in patients 6-12 months after surgery. Results: Among controls, hypocalcemia elicited a major rise in intact PTH (iPTH) levels 4 minutes after bicarbonate infusion. In patients, a significant decrease in ionized calcium concentration was observed [from 1.17 ± 0.12 to 1.09 ± 0.11 mean (± SE) mmol/L] in the 4th minute (p < 0.001) illustrating the nadir point. In the 10thminute, ionized calcium did not show a statistical increase compared to the 4th minute (p = 0.451). The iPTH levels ranged from 34.8 ± 18.6 to 34.1 ± 18.8 pg/mL (similar values between base line and 4thminute p = 0.087) and did not change in the 10th minute (33.3 ± 19,6 pg/ mL p = 0.693). Conclusion: Among CKD patients tested 6-12 months after surgery, grafted parathyroid tissue revealed a blunted secretory capacity during bicarbonate induced hypocalcemia with no changes in iPTH levels.
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Parathyroid Hormone/metabolism , Parathyroid Glands/transplantation , Parathyroidectomy/methods , Hyperparathyroidism, Secondary/surgery , Transplantation, Autologous , Renal Insufficiency, Chronic/complications , Hyperparathyroidism, Secondary/etiology , Hypocalcemia/physiopathologyABSTRACT
OBJETIVO: Avaliar o estado nutricional e o desenvolvimento neuropsicomotor em crianças freqüentadoras de uma creche. MÉTODOS: Estudo transversal de 113 crianças com seis a 70 meses de idade, que freqüentavam a creche Irmã Sheila em Catanduva, São Paulo. A avaliação nutricional foi feita por antropometria e analisada pela classificação de Waterlow e a avaliação do desenvolvimento neuropsicomotor pelo Teste de Denver II, em todas as crianças incluídas no estudo. Dados adicionais foram obtidos por meio de um questionário respondido pelos pais em 70 por cento dos casos. RESULTADOS: Entre as crianças estudadas, observou-se 12 por cento de desnutrição aguda, 1 por cento de desnutrição pregressa e 16 por cento de obesidade. O Teste de Denver II detectou 37 por cento de suspeitos de atraso no desenvolvimento, sendo a linguagem a área mais acometida. A faixa etária mais comprometida foi a de 25 a 60 meses. O questionário mostrou que 87 por cento das crianças receberam aleitamento materno (57 por cento até o sexto mês), 96 por cento das mães trabalhavam fora de casa, 54 por cento delas possuíam ensino médio completo e 73 por cento das famílias tinham renda máxima de dois salários-mínimos. CONCLUSÕES: A alta prevalência de distúrbios nutricionais e possíveis atrasos no desenvolvimento observados em crianças da creche Irmã Sheila mostraram a necessidade de introduzir dietas balanceadas, incentivando o desenvolvimento de hábitos alimentares saudáveis, além de alertar para a questão da interferência negativa dos fatores socioeconômicos e culturais no crescimento e desenvolvimento infantil.
OBJECTIVE: Evaluate the nutritional status and neurodevelopment of children enrolled in a day care center. METHODS: This cross-sectional study enrolled 113 children aged six to 70 months, assisted in a nonprofit day care center in Catanduva, São Paulo. All children were submitted to evaluation of the nutritional status by anthropometry and classified according to Waterlow criteria. Child development was assessed according to Denver II Test. Further characteristics were obtained by a questionnaire answered by 70 percent of the children's parents. RESULTS: Among the evaluated children, 12 percent had acute malnutrition, 1 percent past malnutrition and 16 percent obesity. The Denver II Test detected 37 percent of children with suspect of development delay (the language was the ability area more frequently affected). Children aged 25 to 60 months had more delays. Data from the questionnaire showed that 87 percent of children received breastfeeding (57 percent until around the sixth month of age), 96 percent of the mothers worked outside home, 54 percent of them had high school and 73 percent of the families received less than two minimum wages. CONCLUSIONS: The high prevalence of nutritional problems and possible developmental delays observed in this study indicates the need of adopting balanced diets and improving education towards healthier alimentary habits. Attention should be given in order to act on the negative influence of the poor socioeconomic and educational background on children's growth and development.
