Plasma Lipidomics Profiles Highlight the Associations of the Dual Antioxidant/Pro-oxidant Molecules Sphingomyelin and Phosphatidylcholine with Subclinical Atherosclerosis in Patients with Type 1 Diabetes.

Here, we report on our study of plasma lipidomics profiles of patients with type 1 diabetes (T1DM) and explore potential associations. One hundred and seven patients with T1DM were consecutively recruited. Ultrasound imaging of peripheral arteries was performed using a high image resolution B-mode ultrasound system. Untargeted lipidomics analysis was performed using UHPLC coupled to qTOF/MS. The associations were evaluated using machine learning algorithms. SM(32:2) and ether lipid species (PC(O-30:1)/PC(P-30:0)) were significantly and positively associated with subclinical atherosclerosis (SA). This association was further confirmed in patients with overweight/obesity (specifically with SM(40:2)). A negative association between SA and lysophosphatidylcholine species was found among lean subjects. Phosphatidylcholines (PC(40:6) and PC(36:6)) and cholesterol esters (ChoE(20:5)) were associated positively with intima-media thickness both in subjects with and without overweight/obesity. In summary, the plasma antioxidant molecules SM and PC differed according to the presence of SA and/or overweight status in patients with T1DM. This is the first study showing the associations in T1DM, and the findings may be useful in the targeting of a personalized approach aimed at preventing cardiovascular disease in these patients.

Caracterización de los pacientes portadores de enfermedad pulmonar obstructiva crónica y su respuesta a ipratropio y teofilina / Characterization of chronic obstructive pulmonary disease patients and their response to ipratropium and theophylline

La respuesta clínica y funcional a dos broncodilatadores, bromuro de ipratropio y teofilina en enfermedad pulmonar obstructiva crónica fue evaluada en 62 pacientes, procedentes del programa de enfermedades bronquiales obstructivas del Instituto Nacional del Tórax. Conjuntamente se describen las características clínicas, radiológicas y de laboratorio de los 62 pacientes. El estudio duró 6 meses y los pacientes recibieron bromuro de ipratropio 40 mg 4 veces al día por vía inhalatoria o teofilina oral 200 mg 2 veces al día. Por distribución aleatoria se dividieron en dos series : ipratropio (n=30) y teofilina (n=32) realizándose cambio de terapia a los 3 meses. Los pacientes fueron sometidos mensualmente a un seguimiento clínico y funcional durante el tiempo de duración del estudio. Al final del período de tratamiento, la disnea mejoró solo durante el período con ipratropio (p<0,01), aunque no se apreció cambios significativos en la función pulmonar con ninguno de los dos medicamentos. Durante el período con ipratropio se presentó una menor frecuencia de reacciones adversas severas (p < 0,05)