La yerba mate en infusión (Mate Cocido) mejora la microcirculación

1. Yerba mate (Ilex paraguariensis) improves microcirculation of volunteers with high blood viscosity: A randomized, double-blind, placebo-controlled trial

2. Nombre de la Publicación: Experimental Gerontology, Volume 62, February 2015, Pages 14-22
3. Shaohong Yu, Shou wei Yue, Zhaochun Liu, Tiefeng Zhang, Nan Xiang, Hui Fu

Muy interesante y profesional estudio donde los participantes fueron seleccionados aleatoriamente para recibir un grupo de ellos té de yerba maté. Es decir, el popularmente denomidado en Argentina: "mate cocido". Y otro grupo comparativo utilizó placebo.  Además, otra curiosidad es que los investigadores utilizaron yerba mate de la marca Nobleza Gaucha; Misiones, Argentina. 
El placebo consistió de una infusión de "fried wheat" (Triticum aestivum, Poaceae). cinco veces por día. La infusión consistió de una taza con agua caliente.

A continuación transcribimos el resumen de la publicación:

Abstract

Background

Elevated blood viscosity is a risk factor for atherosclerosis, thrombosis and other cardiovascular events. Our previous studies have suggested that consumption of Yerba mate tea (Ilex paraguariensis) has strong antioxidant and lipid-lowering properties in animals. The in vivo effects of Yerba mate on blood viscosity in humans, however, have not been studied.

 

Objective

This study aims to investigate the effect of Yerba mate tea on the reduction of blood viscosity and the improvement of microcirculatory parameters commonly regarded as risk factors for serious cardio and cerebrovascular disorders.

 

Methods

142 subjects with high blood viscosity were recruited in this randomized, double-blind, placebo-controlled study. Yerba mate tea or placebo (5 g/day) was administered to different groups for 6 weeks. After treatment, results of hemorheological indexes, nailfold microcirculation, 6-keto-PGF1α and TXB₂ and lipid profiles of subjects in the Yerba mate tea group were compared with those in the placebo-receiving group.

 

Results

Parameters of blood viscosity and microcirculation were improved in the subjects from the Yerba mate tea group but not in placebo-receiving patients. After treatment, whole blood viscosity, plasma viscosity and the Equation K value of erythrocyte sedimentation rate (ESRK) decreased significantly in the Yerba mate group. Meanwhile, shape, flow state and nailfold microcirculation appeared positively changed. Specifically, blood flow speeds accelerated gradually and nailfold weighted integral values decreased significantly. Moreover, the vasodilator 6-keto PGF1α increased while the thromboxane TXB₂decreased in serum samples of subjects in the Yerba mate-receiving group. Overall, Yerba mate tea-receiving subjects saw nearly all measured values improve to levels comparable to those characteristic of patients with normal microcirculation.

 

Conclusions

These results indicate the therapeutic capacity of Yerba mate tea in the treatment of high blood viscosity. Here, Yerba mate tea played a role in the regulation of various indexes of hemorheology, nailfold microcirculation, and the platelet aggregating factors 6-keto-PGF1a and TXB₂. The regulation of these might be correlated with reduced blood viscosity and accelerating blood flow. Thus, Yerba mate tea may reduce some key risk-factors of cardiovascular disease. Daily consumption of Yerba mate tea may be a better-tolerated option for individuals with high blood viscosity and microcirculatory disturbance and as such, a novel preventative strategy for patients at-risk for vascular disease.