Effects of Soy-Germ Protein on Catalase Activity of Plasma and Erythocyte of Metabolic Syndrome Women

HERY WINARSI, SIWI PRAMATAMA MARS WIJAYANTI, NURTJAHJO DWI SASONGKO, AGUS PURWANTO

Abstract


Oxidative stress always accompany patients with metabolic syndrome (MS). Several researchers reported that soy-protein is able to decrease oxidative stress level. However, there is no report so far about soy-germ protein in relation to its potential to the decrease oxidative stress level of MS patients. The aim of this study was to explore the potential of soy-germ protein on activity of catalase enzyme in blood’s plasma as well as erythrocytes of MS patients. Double-blind randomized clinical trial was used as an experimental study. Thirty respondents were included in this study with MS, normal level blood sugar, low-HDL cholesterol but high in triglyceride, 40-65 years old, Body Mass Index > 25 kg/m2, live in Purwokerto and agreed to sign the informed consent. They were randomly grouped into 3 different groups, 10 each: Group I, was given special milk that contains soy-germ protein and Zn; Group II, soy-germ protein, while Group III was placebo; for two consecutive months. Data were taken from blood samples in 3 different periods i.e. 0, 1, and 2 months after treatment. Two months after treatment, there was an increase from 5.36 to 20.17 IU/mg (P = 0.028) in activity of catalase enzyme in blood’s plasma respondents who consumed milk containing soy-germ protein with or without Zn. A similar trend of catalase activity, but at a lower level, was also noticed in erythrocyte; which increased from 88.31 to 201.11 IU/mg (P = 0.013). The increase in activity of catalase enzyme in blood’s plasma was 2.2 times higher than that in erythrocytes.

Keywords


catalase, erythrocytes, plasma, metabolic syndrome women, soy-germ protein

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DOI: http://dx.doi.org/10.4308/hjb.22.1.%25x

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