Oxidative stress and antioxidant protection in people of various age under contact with adverse occupational factors

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I.A. Umnyagina, T.V. Blinova, L.A. Strakhova, V.V. Troshin, S.A. Kolesov, О.V. Sherstobitova


Nizhegorodskiy Scientific Research Institute for Hygiene and Occupational Pathology, 20 Semashko Str., Nizhniy Novgorod, 603950, Russian Federation


Free radical oxidation and antioxidant protection system has been examined for decades. However, experts still haven't been able to determine cause-and-effect relations between oxidative stress, age, working conditions, and a risk of functional and organic disorders that can develop in a human body.
Our research goal was to detect peculiarities related to age dynamics of integral parameters that describe oxidative stress and total antioxidant capacity of blood serum; to assess their changes depending on impacts exerted by adverse occupational factors on a worker's body.
244 people aged from 18 to 65 were under observation; they all had physical loads at their workplaces and contacted adverse chemicals. These people underwent regular medical check-ups at a consultancy polyclinic of the Rospotrebnadzor's Nizhniy Novgorod Scientific Research Institute for Hygiene and Occupational Pathology.
The first stage in the research involved mass screening aimed at detecting parameters related to oxidative stress and total antioxidant capacity of blood serum in all the examined people. At the second stage in research we analyzed levels of oxidative stress and total antioxidant capacity of blood serum taking into account age of an examined person and impacts exerted by adverse occupational factors (n=174).
Integral parameters of oxidative stress and total antioxidant capacity of blood serum were determined with a calorimetric biochemical microplate procedure.
We detected that oxidative stress grew with age and antioxidant protection dropped. It was shown that adverse chemical factors exerted more apparent impacts on oxidative stress and antioxidant capacity of blood serum on people from the same age group than physical loads. We determined integral parameters of oxidative stress and antioxidant capacity of blood serum in people from various age groups and limits of their age-dependent changes. These parameters can serve as informative tests for monitoring over health, assessing gravity of a disease, its forecast, treatment efficiency, and preventive activities.

oxidative stress, total antioxidant capacity of blood serum, age, physical overloads, chemical factors
Umnyagina I.A., Blinova T.V., Strakhova L.A., Troshin V.V., Kolesov S.A., Sherstobitova О.V. Oxidative stress and antioxidant protection in people of various age under contact with adverse occupational factors. Health Risk Analysis, 2019, no. 3, pp. 104–111. DOI: 10.21668/health.risk/2019.3.12.eng
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