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Epidemic nephropathy, a form of hemorrhagic fever with renal syndrome, caused by the Puumala serotype of hantaviruses and occurring endemically in northern Scandinavia, was studied in 13 children. The clinical symptoms and signs were somewhat different from those reported in adults; none of our patients had hemorrhagic manifestations despite low thrombocyte counts. The most common presenting symptoms were fever, abdominal pain, and renal tenderness with oliguria followed by polyuria. The predominant laboratory findings were proteinuria and/or hematuria and elevated serum creatinine levels. Thrombocytopenia was a constant finding in the children in whom thrombocyte count was obtained. Most children had a decreased serum sodium concentration during the oliguric phase of the disease. All the children recovered, with no long-term renal disease. Epidemic nephropathy is an important alternative for differential diagnosis in children with findings suggesting nephritis, especially in endemic areas. An awareness and knowledge of this syndrome and an ability to diagnose it by means of a specific antibody measurement will probably improve our understanding of its epidemiologic features in children.
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PMID:Epidemic nephropathy in children. 168 24

Thirteen cases of hemorrhagic fever with renal syndrome (HFRS) have been observed in the Nancy area. Ten occurred during the summer of 1983 and three in April and May 1985. The clinical characteristics were in each case very typical: abrupt onset with high fever, myalgia, intense lumbar and abdominal pain, pulsatile headache, inflammatory syndrome, WBC count increase and thrombocytopenia. Acute renal failure occurred a few days later with oliguria (9 cases out of 13), massive proteinuria (9/13) and hematuria (6/13). All patients recovered without sequelae within 8-10 days. Renal biopsy performed in 8 patients showed slight tubular lesions with interstitial mononuclear cell infiltrate, congestion and diffuse interstitial edema, and in 2 cases hemorrhagic extravasation. No glomerular lesions were observed. Clinical, histological and epidemiological characteristics of these 13 French cases are highly similar to those of the Scandinavian Nephropathia Epidemica reports. The epidemiology of HFRS remains unclear as do its pathophysiological mechanisms.
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PMID:[Hemorrhagic fever with renal syndrome. Apropos of 13 cases observed in Lorraine]. 287 52

Hantavirus-induced acute renal failure is a worldwide occurring disease and rarely known and diagnosed in Germany and in Western Europe. Its various clinical features are embraced by the term Hemorrhagic Fever With Renal Syndrome (HFRS). Cardinal symptoms of the mild European form called Nephropathia epidemica (NE) leading to diagnosis are: abrupt onset, fever, pain (abdominal, loin-, or headache), acute renal failure, proteinuria and/or hematuria, polyuria, and thrombocytopenia. Etiologic agent of NE is the vole transmitted Puumula-serotype of Hantaviruses. Severe courses of HFRS characterized by hemorrhagic complications occur in Asia and Southeast Europe and are caused by the serotypes Hantaan (Korean Hemorrhagic Fever), Seoul (rat associated) and Belgrade (both Epidemic Hemorrhagic Fever). Serological evidence of IgG and/or IgM-antibodies by indirect immunofluorescent antibody assay (IFA), enzyme linked immunosorbent assay (ELISA) or mu-capture-ELISA proves the diagnosis and allows distinction of the infecting virus type. Transmission occurs primarily through inhalation of virus contaminated aerosols or dust. Transmission between humans has never been observed. The incubation period ranges between four days to four weeks. All persons who have much outdoor activities in forests, open fields, farms, and nearby waters are at risk to be infected. Practical exposure prophylaxis seems rarely possible. Therapy of NE is only symptomatic, confined to the treatment of pain, diuretic therapy in oliguric patients, and volume and electrolyte substitution in volume depleted or polyuric patients. Sometimes temporary hemodialysis is needed. Renal history reveals commonly the pattern of acute interstitial nephritis with typical focal interstitial microhemorrhages.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Acute kidney failure caused by Hantaviruses]. 778 96

Hantavirus disease is a recently recognised zoonosis. The main vectors are infected but healthy wild rodents or laboratory rats. Transmission to man occurs via contact with, or inhalation of aerosolised excretions. The target organs in man are the kidney (Old World) or the lung (New World), probably via a local hyperproduction of pro-inflammatory cytokines. To date, more than 33 different hantaviruses have been characterised, at least 14 of them being of clinical importance. Each serotype has its own rodent vector and its own geographical spread. In Europe, the red bank vole (Clethrionomys glareolus) is the main rodent vector, carrying the Puumala (PUU) serotype, which is the etiologic agent of a viral affection known as Nephropathia epidemica (NE). PUU infection has been recognised for the first time in Belgium in 1983. From this date on, approximately 500 cases have been diagnosed. In our regions, a diagnosis of hantavirus disease is mandatory when a febrile patient presents with lumbaches, headache, and an acute renal failure with proteinuria, and particularly with thrombocytopenia.
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PMID:[Hantavirus infections in Belgium]. 1065 77

Nephropathia epidemica due to Puumala virus has already been described in Belgium. Its evolution is usually favourable. The main symptoms are fever, a decrease platelet count, proteinuria and acute renal insufficiency, which, in an epidemiological context, quickly point the correct diagnosis. Acute and transitory myopia is typical. Nevertheless, the clinical presentation, including multisystemic symptoms may lead to the false diagnosis of an acute bacterial or immune disease.
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PMID:[Clinical case of the month. A new case of nephropathia epidemica due to Puumala virus]. 1076 79

Puumala hantavirus is the most common hantavirus infection in Western Europe. The causative agent, Puumala virus, is a member of the Hantavirus genus in the Bunyaviridae family. The natural hosts of hantaviruses are chronically, but asymptomatic infected rodents, which transmit the virus to human in their excretions. Puumala virus is carried by the bank vole, clethrionomys glareolus. Hemorrhagic fever with renal syndrome (HFRS) caused by Puumala virus in France or Belgium is very similar to the previously described Nephropathia epidemica in Scandinavia. In most severe cases, the disease is clinically characterized by high fever of abrupt onset, headache, loin or abdominal pains, nausea and vomiting, and occasionally acute and transient myopia. Renal involvement results in transient proteinuria and hematuria and acute renal failure. Except for interstitial hemorrhage in the outer medulla, the renal histopathologic findings are unspecific and include prominent changes in the interstitium with interstitial oedema and inflammatory infiltrates. Thrombocytopenia, mild elevation of liver enzymes, and leukocytosis are typical laboratory findings. Spontaneous complete recovery is the rule. Laboratory diagnosis is primarily based on serology such as indirect immunofluorescence or capture enzyme--linked immunosorbent assays which detect IgM antibodies and an increased level of IgG antibodies against Puumala virus. Viral antigen may be demonstrated in the cytoplasm of renal tubular epithelial cells.
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PMID:[Hemorrhagic fever with renal syndrome]. 1171 7

Nephropathia epidemica induced by Puumala hantavirus typically causes acute reversible renal function impairment. A typical renal biopsy finding is acute tubulointerstitial nephritis with slight glomerular mesangial changes. We describe here 5 patients who developed the nephrotic syndrome during the convalescent phase of an otherwise typical acute febrile nephropathia epidemica. Renal biopsy of all patients disclosed type I mesangiocapillary glomerulonephritis (MCGN). A clinical remission of the nephrotic syndrome was observed in 4 patients during the follow-up period, and 1 entered into chronic renal failure. Three patients had microscopic hematuria and proteinuria and 2 elevated blood pressure at the latest assessment visit. No patient had clinical or laboratory findings compatible with chronic bacterial, parasitic or viral infections (hepatitis B or C), malignancies, or other disorders known to be associated with MCGN. In conclusion, Puumala hantavirus has to be added to the list of potential agents associated with type I MCGN. Further studies are necessary to establish the incidence of MCGN caused by various hantavirus infections.
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PMID:Mesangiocapillary glomerulonephritis caused by Puumala hantavirus infection. 1172 Nov 57

Nephropathia epidemica (NE) is a hemorrhagic fever with renal syndrome caused by Puumala hantavirus. Its long-term prognosis is considered favorable. There are, however, some reports about subsequent hypertension, glomerular hyperfiltration, and proteinuria after previous hantavirus infection. Therefore, we studied 36 patients 5 and 10 years after acute NE, with 29 seronegative controls. Office blood pressure, ambulatory 24-h blood pressure (ABP), glomerular filtration rate (GFR), and proteinuria were examined. Hypertensive subjects were defined as those patients having increased ambulatory or office blood pressure, or receiving antihypertensive therapy. Office blood pressure was used to define hypertension only if ABP was not determined. At 5 years, the prevalence of hypertension was higher among NE patients than in controls (50 vs 21%, P=0.020). At 10 years, the difference between the groups was no more significant (39 vs 17%, P=0.098). Five years after NE, patients showed higher GFR (121+/-19 vs 109+/-16 ml/min/1.73 m(2), P=0.012) and urinary protein excretion (0.19 g/day, range 0.12-0.38 vs 0.14 g/day, range 0.09-0.24, P=<0.001) than controls. At 10 years, there were no more differences in GFR or protein excretion between the groups (GFR: 113+/-20 vs 108+/-17 ml/min/1.73 m(2), P=0.370; proteinuria: 0.14 g/day, range 0.07-0.24 vs 0.13 g/day, range 0.06-0.31, P=0.610). In conclusion, the 10-year prognosis of NE is favorable, as glomerular hyperfiltration and slight proteinuria detected at 5 years disappeared during the longer follow-up. However, the possibility exists that NE may predispose some patients to the development of hypertension.
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PMID:Ten-year prognosis of Puumala hantavirus-induced acute interstitial nephritis. 1672 89

Nephropathia epidemica (NE) is a mild form of hemorrhagic fever with renal syndrome, assumed to have a favorable prognosis. NE patients who manifested a higher glomerular filtration rate and mean systolic blood pressure, and more proteinuria, versus controls at 5 years of follow-up demonstrated no major abnormalities after 10 years. Antihypertensive treatment was, however, more common. Could NE predispose some patients to develop hypertension after all?
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PMID:Is there an increased long-term risk of hypertension and renal impairment after Puumala virus-induced nephropathy? 1664 33

A 38 year old patient presented with fever, myalgic abdominal pain, nose bleeding and acute renal failure since five days. A combination of thrombocytopenia, proteinuria, elevated CrP and creatinin is common in hemorrhagic fever with renal syndrome (HFRS) due to Hantavirus infection. The benigne form is called Nephropathia epidemica. Dialysis is infrequently required by patients with the Puumala virus. Other infection (e.g. malaria, leptospirosis, yellow fever) and systemic diseases (e.g. collagenosis or vasculitis) are considered.
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PMID:[Fever, nosebleeding and myalgic abdominal pain]. 1854


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