An exploratory study of manganese exposure to welders. 1981

S V Chandra, and G S Shukla, and R S Srivastava, and H Singh, and V P Gupta

Sixty welders (20 each from Plants A, B, and C) and 20 control subjects were investigated for the possible occurrence of manganese poisoning among welders exposed to the welding fumes containing this metal. Ten, 9, and 5 welders from Plants B, C, and A, respectively, were diagnosed as suspected cases of early manganese poisoning. The diagnosis was based on the proof of overexposure to manganese by the findings of increased urinary levels of this metal, signs of early neurological involvement, and increased contents of serum calcium. These results are discussed in relation to the manganese concentration in the air around the welder's breathing zones.

UI MeSH Term Description Entries
D008297 Male Males
D008345 Manganese A trace element with atomic symbol Mn, atomic number 25, and atomic weight 54.94. It is concentrated in cell mitochondria, mostly in the pituitary gland, liver, pancreas, kidney, and bone, influences the synthesis of mucopolysaccharides, stimulates hepatic synthesis of cholesterol and fatty acids, and is a cofactor in many enzymes, including arginase and alkaline phosphatase in the liver. (From AMA Drug Evaluations Annual 1992, p2035)
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000393 Air Pollutants Any substance in the air which could, if present in high enough concentration, harm humans, animals, vegetation or materials. Substances include GASES; PARTICULATE MATTER; and volatile ORGANIC CHEMICALS. Air Pollutant,Air Pollutants, Environmental,Environmental Air Pollutants,Environmental Pollutants, Air,Air Environmental Pollutants,Pollutant, Air,Pollutants, Air,Pollutants, Air Environmental,Pollutants, Environmental Air
D000395 Air Pollutants, Occupational Toxic air-borne matter related to work performed They are usually produced by the specific nature of the occupation. Occupational Air Pollutants,Pollutants, Occupational Air
D014896 Welding Joining metal pieces or parts together by melting the adjoining surfaces with heat, using a heat source such as a blowtorch or electric arc. The melted surfaces are then pressed together by hammering.
D020149 Manganese Poisoning Manganese poisoning is associated with chronic inhalation of manganese particles by individuals who work with manganese ore. Clinical features include CONFUSION; HALLUCINATIONS; and an extrapyramidal syndrome (PARKINSON DISEASE, SECONDARY) that includes rigidity; DYSTONIA; retropulsion; and TREMOR. (Adams, Principles of Neurology, 6th ed, p1213) Nervous System Diseases, Manganese-Induced,Nervous System Poisoning, Manganese,Neurotoxicity Syndrome, Manganese,Poisoning, Manganese,Manganese Neurotoxicity Syndrome,Manganese Neurotoxicity Syndromes,Nervous System Diseases, Manganese Induced,Neurotoxicity Syndromes, Manganese,Syndrome, Manganese Neurotoxicity,Syndromes, Manganese Neurotoxicity

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