Insulin resistance negatively affects bone quality not quantity: the relationship between bone and adipose tissue

Autor(es)

de Araujo, I. M. ^[1] ; Parreiras-e-Silva, L. T. ^[1] ; Carvalho, A. L. ^[1] ; Elias, Jr., J. ^[1] ; Salmon, C. E. G. ^[2] ; de Paula, F. J. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Internal Med, Ribeirao Preto Med Sch, 3900 Bandeirantes Ave, BR-14049900 Ribeirao Preto, SP - Brazil

^[2] Univ Sao Paulo, Dept Phys, Fac Philosophy Sci & Letters Ribeirao Preto, 3900 Bandeirantes Ave, BR-14040901 Ribeirao Preto, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: OSTEOPOROSIS INTERNATIONAL; v. 31, n. 6 FEB 2020.
• Citações Web of Science: 0

Resumo

The present study suggests that insulin resistance has no association with bone quantity, but quality. Introduction The literature has contradictory results concerning the influence of insulin resistance on bone. The present study sought to evaluate the association of insulin resistance and adipose tissue with either bone mineral density or the trabecular bone score. Methods The study included 56 individuals (36 women and 20 men): age = 46.6 +/- 14.2 years, weight = 67.8 +/- 10.9 kg, height = 1.65 +/- 0.10 m and BMI = 24.8 +/- 3.9 kg/m(2). The investigational protocol included biochemical determinations and bone assessment by dual X-ray absorptiometry for evaluation of bone mineral density and trabecular bone score. Magnetic resonance was employed to estimate visceral, subcutaneous and bone marrow adipose tissues, as well as intrahepatic lipids. Results The bone mineral density of the lumbar spine, femoral neck and total hip were not associated with insulin resistance-related parameters {[}visceral adipose tissue, intrahepatic lipids and homeostatic model assessment of insulin resistance (HOMA-IR)]. In contrast, there was a negative relationship between the trabecular bone score and all these components. The association between the trabecular bone score and HOMA-IR was reinforced after adjustment for age and BMI. Marrow adipose tissue was negatively associated with both bone mineral density and trabecular bone score. Conclusions The present study shows that the trabecular bone score is negatively associated with marrow adipose tissue, insulin resistance, visceral adipose tissue and intrahepatic lipid measurements. Additionally, there was a negative relationship between saturated lipids in marrow adipose tissue and the trabecular bone score. These results encourage further studies to investigate the role of the trabecular bone score exam in the clinical evaluation of osteoporosis in conditions of insulin resistance. (AU)

• Processo FAPESP: 18/14060-9 - Aplicação da ressonância magnética para estudo quantitativo da microarquitetura óssea e sua relação com o acúmulo de gordura muscular e óssea no diabetes melito tipo 2
• Beneficiário: Francisco José Albuquerque de Paula
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 16/18574-1 - Aplicação da ressonância magnética para estudo quantitativo da microarquitetura óssea e sua relação com o acúmulo de gordura muscular e óssea no diabetes mellitus tipo 2
• Beneficiário: Iana Mizumukai de Araujo
• Modalidade de apoio: Bolsas no Brasil - Doutorado