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Eliza OPREA

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The Relationship Between Alanerv® Consumption and Erythrocytes’ Glyoxalases I and II Activities and The Level of Some Serum Markers of Carbonyl Stress in Post-Acute Stroke Patients Undergoing Rehabilitation

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MÆDICA - a Journal of Clinical Medicine | Vol. 8 (11), no. 3 2013

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The Relationship Between Alanerv® Consumption and Erythrocytes’ Glyoxalases I and II Activities and The Level of Some Serum Markers of Carbonyl Stress in Post-Acute Stroke Patients Undergoing Rehabilitation

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ABSTRACT

Objectives: Diabetes mellitus is one of the most frequent stroke-related comorbid states, and it is characterized by accumulation of reactive carbonyl compounds (RCOs), leading to “carbonyl stress”. This pilot study was aimed to evaluate the effect of the consumption of the nutritional supplement ALAnerv® on some serum carbonyl stress markers, as well as on the activity of erythrocytes’ glyoxalases in post-acute stroke patients undergoing rehabilitation.

Material and Methods: We created a study population of 28 patients, organized into (-) ALA and (+) ALA groups. Patients from (+) ALA group received ALAnerv® for two weeks (2 pills/day). All the subjects followed the same rehabilitation program. In both groups, blood samples were taken at the hospitalization and at the discharge moments, respectively. On these samples we assessed lactic acid, fructosamine and RCOs concentrations, as well as the activities of glyoxalases 1 and 2 from erythrocytes’ lysates.

Outcomes: In (-) ALA group the concentrations of fructosamine and RCOs significantly increased (0.90 ± 0.04 vs. 1.02 ± 0.04, p = 0.020; 0.19 ± 0.03 vs. 0.28 ± 0.07, p = 0.027) during the study period. Also, glyoxalase 2 activity decreased in this group (27.04 ± 6.10 vs. 14.43 ± 3.02, p = 0.027). In (+) ALA group, the variation of these parameters did not reach statistical significance. Only, the activity of Glo1, which catalyzes the rate-limiting step in the glyoxalase pathway, had an increasing trend in (+) ALA group. The percentage of variation of fructosamine between (-) ALA and (+) ALA groups reached statistical significance (14.8 ± 5.2 vs. – 1.0 ± 13.3, p = 0.047). Regression analysis indicated that the activity of glyoxalase 2 was significantly influenced by the treatment with ALAnerv® (p < 0.001), while the concentration of RCOs was significantly influenced by diabetes mellitus (p = 0.030).

Conclusions: Our preliminary results suggest that ALAnerv® could be useful for the correction of the carbonyl stress status in post-acute stroke patients with diabetes. Also, this study underlines the need of a longer treatment period with a higher dose.

Keywords: stroke, rehabilitation, glyoxalase I, glyoxalase II, fructosamine, ALAnerv®

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The Relationship Between Alanerv® Consumption and Erythrocytes’ Redox Status in Post-Acute Stroke Patients Undergoing Rehabilitation

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MÆDICA - a Journal of Clinical Medicine | Vol. 9, nr. 3, 2014

CNCSIS - CMR - B+ OBBCSSR

The Relationship Between Alanerv® Consumption and Erythrocytes’ Redox Status in Post-Acute Stroke Patients Undergoing Rehabilitation

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ABSTRACT

Objectives: Stroke is a pathological condition associated with a redox imbalance. Both the acute and the post-acute phases after a stroke are characterized by a pro-oxidant state, which could be corrected through antioxidant supplementation. The aim of the present study was to evaluate the effect of the ALAnerv® upon the redox status of erythrocytes.

Material and Methods: For this pilot study were enrolled 28 post-acute stroke patients. They were randomly divided into a control group [(-) ALA] and a study group [(+) ALA]. Patients were hospitalized for a period of two weeks. Blood samples were taken at the beginning and at the end of this period. Patients from (+) ALA group received the nutritional supplement ALAnerv®. Catalase, SOD, GPx, GRed and GT activities were assessed on erythrocytes’ lysates. Also, the total antioxidant capacity as well as the concentration of total thiols were evaluated.

Outcomes: During the study period only SOD (1393.48 ± 69.14 U/g Hb vs. 1514.06 ± 60.80) and GRed (4.47 ± 0.37 U/g Hb vs. 5.06 ± 0.24) significantly increased in (+) ALA group. Catalase (173.70 ± 14.62 k/g Hb vs. 123.41 ± 8.71) and GT (5.55 ± 0.26 U/g Hb vs. 4.95 ± 0.23) activities significantly decreased during the study period. Multiple regression indicated that only SOD, GT and GRed activities were influenced by the ALAnerv® consumption. There was no significant increase if the total thiols concentration.

Conclusions: ALAnerv® consumption could be associated with a correction of the erythrocytes’ redox status. There is a need to investigate if administration of ALAnerv® over a longer time period could have a more significant influence on the erythrocytes’ antioxidant system.

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