Modulation of lysozyme activity by lead administered by different routes. In vitro study and analysis in blood, kidney, and lung

Biological Trace Element Research
Rosa OlmoM Dolores Blanco

Abstract

Modifications in the enzyme activity of lysozyme, a protein implied in the defence barrier of the organism, can be a good biomarker of alterations in the immune system as a result of exposure to toxic metal, such as lead. The aim of this work was to evaluate the effect of a 200 ppm dose of lead on lysozyme activity in blood, kidney, and lung, and also on tissue structure. Previously, the effect of lead acetate on lysozyme activity in vitro was determined; the in vitro results indicated that lead produced a decrease in enzyme activity. The activity loss was 16 % at 200 ppm of lead. Lead acetate was administered to Wistar rats by oral and intraperitoneal injections. An increase in lysozyme activity was observed in blood when lead was administered by introperitoneal route and in kidney by the oral route. The possible immunostimulation in kidney was discarded because of the structural alterations observed in the tissue. In lung, the decrease in specific lysozyme activity, for both routes of lead exposure, seems to indicate immunosupression, which was in accordance with the structural alterations observed in this tissue.

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Citations

May 28, 2014·Journal of Biochemical and Molecular Toxicology·Jane Kasten-Jolly, David A Lawrence
Nov 10, 2015·Environmental Toxicology and Chemistry·Núria Vallverdú-CollRafael Mateo
Mar 30, 2018·Biological Trace Element Research·Jing DaiYuehong Li
Jun 23, 2019·Biological Trace Element Research·Zhenzhen PanLing Li

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