Acceso usuarios
Meryam Maamar el Asri, Emilio Jesús Pariente Rodrigo, Sara Díaz Salazar de la Flor, Stefanie Francesca Pini Valdivieso, María del Carmen Ramos Barrón, José Manuel Olmos Martínez, José Luis Hernández Hernández
Antecedentes y objetivo La enfermedad microvascular (EMV) diabética ha sido asociada con una fragilidad ósea incrementada. El objetivo fue analizar la relación entre la EMV y la microestructura trabecular -evaluada mediante el índice trabecular óseo (trabecular bone score, TBS)- en pacientes diabéticos tipo 2 (DM2). Adicionalmente, conocer la relación entre la vitamina D y la EMV.
Pacientes y métodos Diseño transversal analítico, que incluyó varones > 50 años y mujeres postmenopáusicas con DM2, participantes en una cohorte poblacional. Se clasificó como EMV+ la presencia de nefropatía, neuropatía y/o retinopatía. Fueron analizadas variables clínicas, de laboratorio, el TBS, la 25-hidroxivitamina D [25(OH)D] y la densidad mineral ósea (DMO). Se realizaron análisis bivariable y multivariable.
Resultados Fueron evaluados 361 pacientes (51,1% mujeres), de 63,8 (9) años. De ellos, 92 tenían EMV, con un peor control metabólico, mayor duración de la DM2, menor TBS (1,235 [0,1] vs. 1,287 [0,1]; p=0,003) y menores niveles de 25(OH)D (18,3 [7] vs. 21,6 [8] ng/mL; p=0,0001). No hubo diferencias entre EMV+ y EMV- en la DMO ni en los marcadores P1NP y β-CTX. Tras ajustar por confusores, incluyendo HbA1c y duración de la DM2, el TBS en EMV+ fue 1,252 (IC 95% 1,230-1,274) vs. 1,281 (IC 95% 1,267-1,295) en EMV- (p=0,034). La EMV se asoció a un nivel de 25(OH)D < 20 ng/mL con una OR ajustada=1,88 (IC 95% 1,06-3,31; p=0,028).
Conclusiones Los pacientes con EMV presentaron un TBS significativamente menor, tras ajustar por confusores. El análisis multivariable mostró asimismo una asociación significativa entre un nivel bajo de 25(OH)D y la EMV prevalente.
Background and objective Diabetic microvascular disease (MVD) has been associated with increased bone fragility. The objective was to analyse the relationship between MVD and trabecular microstructure -assessed by the trabecular bone score (TBS)- in type 2 diabetic (T2D) patients. A second aim was to know the relationship between vitamin D and MVD.
Patients and methods Cross-sectional study, which included men >50 years and postmenopausal women participating in a population-based cohort, diagnosed with T2D. The presence of nephropathy, neuropathy and/or retinopathy was classified as MVD+. Clinical and laboratory variables, TBS, 25(OH)D and BMD by DXA, were evaluated. Bivariate and multivariate analysis were performed.
Results We evaluated 361 patients (51.1% women), 63.8 (9) years old. Of them, 92 were MVD+ and presented poorer metabolic control, longer duration of T2D, lower TBS [1.235 (.1) vs. 1.287 (.1); p=.007] and lower levels of 25(OH)D [18.3 (7) vs. 21.6 (8) ng/ml; p=.0001). There were no differences between MVD+ and MVD- with regard to BMD or P1NP and β-CTX markers. After adjusting for confounders, including HbA1c and duration of T2D, the TBS value in MVD+ was 1.252 (95% CI 1.230-1.274) vs. 1.281 (95% CI 1.267-1.295) in MVD- (p=.034). MVD was associated with a 25(OH)D level <20 ng ml with an adjusted OR of 1.88 (95% CI 1.06-3.31; p=.028).
Conclusions The MVD+ patients presented a significantly lower TBS, after adjusting for confounders. Furthermore, multivariable analysis showed a significant relationship between a low 25(OH)D level and a prevalent MVD.
