Occupational medicine (Oxford, England) · 2004
Chronic overexposure to cadmium fumes associated with IgA mesangial glomerulonephritis.
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Nogué Santiago, Sanz-Gallén Pere, Torras Albert, Boluda Francisco
Аннотация
BACKGROUND: Cadmium is a metal used in the zinc, copper and steel industries, and in the manufacture of electric batteries and solar cells. Acute cadmium poisoning is characterized by irritation of the respiratory tract, while in chronic poisoning the main target organ is the renal tubule.
AIMS: We report a patient with chronic work overexposure to cadmium, who presented a IgA mesangial glomerulonephritis with no respiratory or renal tubule involvement. Case report A 39-year-old patient was referred to our hospital for evaluation of a glomerular nephropathy. For the past 12 years he had worked as a welder, using cadmium electrodes. The patient had no respiratory symptoms and the chest X-ray was normal. Tests showed a proteinuria of 2 g in 24 h with microhaematuria [150 red blood cells/high power field (rbc/hpf)], with preservation of the renal function (creatinine clearance of 137 ml/min). The concentrations of cadmium in blood and urine were 45 micro g/l and 25 micro g/g creatinine, and an environmental study showed that levels of cadmium in the workplace were 52 micro g/m(3). A renal biopsy showed an IgA mesangial glomerulonephritis. The patient ceased to work with cadmium, and 1 year later cadmium levels had decreased and renal function was found to be stable.
CONCLUSIONS: IgA mesangial glomerulonephritis is a disease of unknown aetiology which has been associated with other diseases. Chronic overexposure to cadmium may contribute to the development of this nephrophathy.
AIMS: We report a patient with chronic work overexposure to cadmium, who presented a IgA mesangial glomerulonephritis with no respiratory or renal tubule involvement. Case report A 39-year-old patient was referred to our hospital for evaluation of a glomerular nephropathy. For the past 12 years he had worked as a welder, using cadmium electrodes. The patient had no respiratory symptoms and the chest X-ray was normal. Tests showed a proteinuria of 2 g in 24 h with microhaematuria [150 red blood cells/high power field (rbc/hpf)], with preservation of the renal function (creatinine clearance of 137 ml/min). The concentrations of cadmium in blood and urine were 45 micro g/l and 25 micro g/g creatinine, and an environmental study showed that levels of cadmium in the workplace were 52 micro g/m(3). A renal biopsy showed an IgA mesangial glomerulonephritis. The patient ceased to work with cadmium, and 1 year later cadmium levels had decreased and renal function was found to be stable.
CONCLUSIONS: IgA mesangial glomerulonephritis is a disease of unknown aetiology which has been associated with other diseases. Chronic overexposure to cadmium may contribute to the development of this nephrophathy.