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1.
Clin Nephrol ; 95(2): 65-80, 2021 Feb.
Article in English | MEDLINE | ID: mdl-33300865

ABSTRACT

EPIDEMIOLOGY: An increasing number of inhabitants of Central America have developed a form of chronic kidney disease of unknown cause, named Mesoamerican nephropathy (MeN). Because similar epidemics have been reported in other parts of the world, such as Sri Lanka, India, Egypt, and Tunisia, this condition is currently called chronic kidney disease of uncertain origin (CKDu). CLINICAL PRESENTATION: This disease is characterized by minimal proteinuria, leukocyturia, hyperuricemia, hypokalemia reduced glomerular filtration rate, and renal tubular dysfunctions. Pathology: The kidneys manifest tubulo-interstitial nephritis and glomerulosclerosis. Electron microscopy shows large dimorphic lysosomes with dark electron-dense aggregates. Potential causes: The cause(s) of this disease remain largely unknown. Several hypotheses have been proposed including infections, dehydration, global warming, hyperuricemia, exposure to agro-chemicals or heavy metals, and genetic susceptibility. This review addresses a mounting body of evidence suggesting that the disease may be the result of exposure to a variety of water contaminants combined with volume depletion. THERAPY: Absent a clear understanding of the causes of the disease, no specific therapeutic interventions can be recommended. Preliminary studies suggest that reduction of working hours, frequent rest in shaded area, and administration of purified water may reduce the risk of CKDu.


Subject(s)
Epidemics , Renal Insufficiency, Chronic , Central America/epidemiology , Environmental Exposure , Global Warming , Humans , Kidney/pathology , Renal Insufficiency, Chronic/epidemiology , Renal Insufficiency, Chronic/etiology , Water Pollutants, Chemical
2.
Nephrol Dial Transplant ; 32(4): 603-606, 2017 04 01.
Article in English | MEDLINE | ID: mdl-28407133

ABSTRACT

In recent years, an increasing number of inhabitants of Central America have developed a form of chronic kidney disease, now named Mesoamerican nephropathy. This disease is characterized by minimal proteinuria, hyperuricemia, hypokalemia and reduced glomerular filtration rate. Histologically the kidneys manifest tubulointerstitial nephritis. The cause(s) of this disease remain unknown. Some have proposed that dehydration, in combination with hyperuricemia, may be primarily responsible for Mesoamerican nephropathy. In this article, I propose the hypothesis that the disease may be largely due to rehydration with large amounts of contaminated water, whereas dehydration would play only a contributing role.


Subject(s)
Dehydration/etiology , Heat Stress Disorders/etiology , Hot Temperature/adverse effects , Hyperuricemia/etiology , Occupational Exposure/adverse effects , Proteinuria/etiology , Renal Insufficiency, Chronic/complications , Central America/epidemiology , Dehydration/epidemiology , Fluid Therapy , Heat Stress Disorders/epidemiology , Humans , Hyperuricemia/epidemiology , Proteinuria/epidemiology
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