Function of the liver and bile ducts in humans exposed to lead
| Autor: | Elżbieta Świętochowska, Alina Ostałowska, M. Dziwisz, Aleksandra Kasperczyk, Ewa Birkner |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Health Toxicology and Mutagenesis Physiology Air Pollutants Occupational Toxicology Young Adult Adverse health effect Malondialdehyde Occupational Exposure Internal medicine medicine Cholinesterases Humans Aspartate Aminotransferases Lead (electronics) Ultrasonography Cholestasis L-Lactate Dehydrogenase business.industry Alanine Transaminase Aminolevulinic Acid Organ Size gamma-Glutamyltransferase General Medicine Middle Aged Alkaline Phosphatase Ultrasonic imaging Endocrinology Lead Liver Metallurgy Lead exposure Bile Ducts Lipid Peroxidation business |
| Zdroj: | Human & Experimental Toxicology. 32:787-796 |
| ISSN: | 1477-0903 0960-3271 |
| DOI: | 10.1177/0960327112468177 |
| Popis: | Lead is very common in the environment, and it is therefore important to characterize its possible adverse health effects. The aim of this study was to evaluate the impact of lead exposure on selected functions of the liver and bile ducts in people who are chronically exposed to the metal because of their occupations. To provide this information, the activity of specific enzymes and the bilirubin concentration were determined in blood serum, and morphological parameters of the liver and bile ducts were evaluated using the ultrasonic imaging method. Healthy male employees of a lead–zinc processing facility ( n = 145) who were occupationally exposed to lead were divided into two subgroups as a function of the lead concentrations in blood (PbB): low lead exposure (PbB = 20–35 μg/dl; n = 57) and high lead exposure (PbB = 35–60 μg/dl; n = 88). Human exposure to lead compounds was found to cause liver enlargement and to activate inflammatory reactions with the characteristics of moderate cholestasis within the bile ducts, while no characteristics of necrotic damage of hepatic cells were noted. It seems that lipid peroxidation can be one of the toxic mechanisms of lead which induce moderate cholestasis. The effects depend on the extent of the lead exposure and were greater in subjects with higher exposure levels, particularly subjects with PbB values greater than 35 μg/dl. |
| Databáze: | OpenAIRE |
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