Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0034186 (pyelonephritis)
 6,144 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The purpose of the study was assessment of gentamicin nephrotoxicity with reference to proximal tubule function and glomerular filtration. The study was carried out in 20 patients with nephrolithiasis and chronic pyelonephritis, and 33 patients with respiratory and bile tract infections treated with gentamicin in doses of 2-3 mg/kg/2 h. In 3 patients with nephrolithiasis and chronic pyelonephritis signs of increased nephrotoxicity of gentamicin (according to Schentag criteria) were found. Similar signs were demonstrated in 3 patients with non-urinary tract infections. The abnormalities included increased excretion of low-molecular protein and beta-2-microglobulin (B2m), reduction of B2m reabsorption and lower glomerular filtration. Beta-2-microglobulinuria increase precede by 4-5 days the fall of the glomerular filtration rate which suggests that beta-2-microglobulinuria assessment is an early sign of gentamicin neurotoxicity.
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PMID:[Nephrotoxic effect of gentamicin on the function of the proximal tubules of the nephron and glomerular filtration]. 129 38

The aim of the present work is to evaluate the function of the proximal tubule in patients with active metabolic stone disease (a.m.s.d.), recognizing the urinary excretion of beta-2-microglobulin (B2-M) as a sensitive marker of that function. The investigated group included 30 patients with a.m.s.d. accompanied by chronic pyelonephritis (CP) and 31 patients with a.m.s.d. without CP. The serum and urinary B2-M concentrations were estimated by radioimmunoassay. The clearance of B2-M (CB2-M) and the tubular reabsorption of B2-M (TRB2-M) were estimated. Patients with a.m.s.d. and CP showed an increased excretion of B2-M, significantly higher values of CB2-M and a significantly lower TRB2-M. The results indicate that the proximal tubular dysfunction in the group of patients with a.m.s.d. is a result of a chronic inflammatory process in the urinary tract.
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PMID:Urinary excretion of beta-2-microglobulin in patients with active metabolic stone disease. 269 91

A group of 27 female and 2 male urological patients, aged 19 to 80 years (mean 44 years), were treated with intravenous temocillin 500 mg twice daily for 5 to 7 days. The diagnoses were acute pyelonephritis (n = 20), acute cystitis (n = 6), and acute cystitis and pyelonephritis combined (3). The causative organisms were Escherichia coli (n = 20). Proteus species (n = 9). Klebsiella species (n = 4). Streptococcus faecalis (n = 2). Staphylococcus epidermidis (n = 1), and Providencia stuartii (n = 1). 27 of the 29 patients (93%) were clinically and bacteriologically cured; bacteriuria persisted in 2 patients with prolonged obstructive uropathy. In acute non-obstructive pyelonephritis, the urinary excretion of beta-2-microglobulin rapidly decreased, documenting a prompt renal tubular restitution during therapy. The drug was well tolerated and proved very safe with regard to haematological, hepatic and renal parameters. Also, Candida haemagglutination titres did not increase significantly during therapy. Temocillin therapy should preferably be commenced after the results of the urine culture are available.
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PMID:Clinical evaluation of temocillin in urinary tract infections. 389 36

Urinary N-acetyl-beta-glucosaminidase (NAG) and beta-2-microglobulin (B2M) concentrations were measured in 24 pediatric patients with febrile urinary tract infection (UTI) and compared with the technetium-99m-labeled dimercaptosuccinic acid (DMSA) renal scan results, in order to evaluate a noninvasive means to localize the site of UTI. Increased urinary B2M and NAG were not associated with renal inflammation (pyelonephritis), as defined by positive dimercaptosuccinic acid scan. Median NAG concentrations were 114.2 mumol/hour/mg creatinine (CR) (range, 5.7 to 305.4) in 17 febrile UTI patients vs. 13.8 (range, 3.4 to 104.3) in 17 age and sex-matched febrile controls with negative urine cultures, P = 0.0001. The sensitivity and specificity of NAG > or = 40 mumol/hour/mg of CR in predicting UTI in febrile patients, regardless of the site of infection, were 88 and 88%, respectively. Increased urinary NAG is associated with UTI in febrile patients regardless of the level of infection (scan status), and may be an informative indicator of UTI.
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PMID:Urinary N-acetyl-beta-glucosaminidase and beta-2-microglobulin in the diagnosis of urinary tract infection in febrile infants. 803 46