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Arq. bras. endocrinol. metab ; 54(2): 244-249, Mar. 2010. graf, tab
Article in English | LILACS | ID: lil-546270

ABSTRACT

OBJECTIVE: To evaluate the responses of serum β-CTX and osteocalcin in patients who were undergoing treatment with teriparatide or strontium ranelate (SR). SUBJECTS AND METHODS: We analyzed 14 patients (12 women and 2 men; mean age of 71 years) taking teriparatide, and 13 female patients (mean age of 70 years) taking SR; all the patients having previously been on bisphosphonates. Serum β-CTX and osteocalcin levels were determined before and after the first and third months of teriparatide treatment and up to the fourth month of treatment with SR. RESULTS: We observed an initial significant increase in osteocalcin levels during the first month (165 percent, p = 0.01) followed by a peak of β-CTX (180 percent, p = 0.02) after the third month of treatment with teriparatide. An increase in these markers was also observed with SR: 49 percent in osteocalcin (p = 0.002) and 80 percent in β-CTX (p = 0.008). CONCLUSION: SR had a predominantly short-term bone-forming effect in postmenopausal women with osteoporosis previously treated with bisphosphonates in a lesser degree than with teriparatide.


OBJETIVO: Avaliar as respostas do β-CTX e osteocalcina séricos em pacientes que foram submetidas a tratamento com teriparatida ou ranelato de estrôncio (RE). SUJEITOS E MÉTODOS: Analisaram-se 14 pacientes (12 mulheres e 2 homens; idade média 71 anos) tomando teriparatida, e 13 mulheres (idade média 70 anos) tomando RE; todos os pacientes haviam previamente tomado bisfosfonatos. Níveis séricos de β-CTX e osteocalcina foram determinados antes e após o primeiro e terceiro meses de tratamento com teriparatida e no quarto mês de tratamento com RE. RESULTADOS: Observou-se um aumento inicial significativo nos níveis de osteocalcina no primeiro mês (165 por cento, p = 0,01), seguido por um pico do β-CTX (180 por cento, p = 0,02) após o terceiro mês de tratamento com teriparatida. Aumento nesses marcadores também foi observado com RE: 49 por cento na osteocalcina (p = 0,002) e 80 por cento no β-CTX (p = 0,008). CONCLUSÃO: RE teve um efeito predominantemente na formação óssea a curto prazo em mulheres na pós-menopausa com osteoporose tratadas previamente com bisfosfonatos em menor grau que a teriparatida.


Subject(s)
Aged , Female , Humans , Male , Bone Density Conservation Agents/therapeutic use , Diphosphonates/therapeutic use , Organometallic Compounds/therapeutic use , Osteocalcin/blood , Osteoporosis/drug therapy , Teriparatide/therapeutic use , Thiophenes/therapeutic use , Bone Density , Biomarkers/blood , Osteoporosis/blood , Peptides/blood
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