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)

A high frequency of struvite urolithiasis, hydronephrosis, and other urinary tract lesions developed in a group of Lewis rats inoculated intracranially with lymphocytic choriomeningitis virus (LCMV). Initially, clinically ill rats were referred to necropsy: 30 rats over 3 years. These rats had high frequency of urolithiasis (8/30, 27%), hydronephrosis (12/30, 40%), cystitis (9/30, 30%), transitional cell carcinoma (4/30, 13%), and pyelonephritis (19/30, 63%). Lesions were more common in LCMV-inoculated rats. After this trend was noted, all rats on this protocol were necropsied as part of a cohort study (n = 144). Although the apparent frequency of disease was lower due to increased sampling, there still was a high number of urolithiasis (9/144, 6%) and hydronephrosis (40/144, 28%) cases. All cases of urolithiasis developed in rats inoculated with LCMV (9/44, 20%), as did most cases of hydronephrosis (31/44, 70%). Although sham-injected and uninoculated control rats also had high frequency of hydronephrosis (6/57 [11%] and 3/43 [7%], respectively), LCMV-inoculated rats had a significantly higher frequency of disease than did sham inoculated (P < 0.0001) and uninoculated (P < 0.0001) controls. These results suggest that Lewis rats may be predisposed to developing lesions of the urinary tract, and that intracranial inoculation of rats with LCMV augments this tendency, leading to formation of struvite calculi and associated urinary tract disease.
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PMID:Urolithiasis associated with experimental lymphocytic choriomeningitis virus inoculation in Lewis rats. 1525 79

Xanthogranulomatous pyelonephritis is an uncommon disease in children. We report of a 2-month-old girl with urinary tract infection and with a renal mass detected by ultrasound scan. The preoperative differential diagnoses were Wilms tumor, multicystic dysplastic kidney, renal abscess, and mesoplastic nephroma. The subsequent histopathological findings allowed the diagnosis of xanthogranulomatous pyelonephritis (XGP). Although XGP is rare at this age, it must be considered in the differential diagnosis of a child presenting with renal mass, either with or without associated urolithiasis, anemia, and elevated inflammatory markers. The long-standing mainstay of therapy for diffuse XGP has been nephrectomy. However, we report the successful preservation of renal mass with partial nephrectomy for diffuse XGP. The affected kidney grew normally and preserved residual function after the operation. Hence we strongly suggest parenchymal saving in pediatric cases of XGP to preserve renal function.
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PMID:Xanthogranulomatous pyelonephritis treated by partial nephrectomy. 1530 98

During the past decade, unenhanced computed tomography (CT) has become the standard of reference in the detection of urinary calculi owing to its high sensitivity (>95%) and specificity (>98%) in this setting. Numerous diseases may manifest as acute flank pain and mimic urolithiasis. Up to one-third of unenhanced CT examinations performed because of flank pain may reveal unsuspected findings unrelated to stone disease, many of which can help explain the patient's condition. Alternative diagnoses are most commonly related to gynecologic conditions (especially adnexal masses) and nonstone genitourinary disease (eg, pyelonephritis, renal neoplasm), closely followed by gastrointestinal disease (especially appendicitis and diverticulitis). Hepatobiliary, vascular, and musculoskeletal conditions may also be encountered. Vascular causes of acute flank pain must always be considered, since these constitute life-threatening emergencies that may require the intravenous administration of contrast material for diagnosis. Radiologists must be familiar with the typical findings of urinary stone disease at unenhanced CT, as well as the spectrum of alternative diagnoses that may be detected with this modality, to accurately diagnose the source of flank pain.
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PMID:Mimics of renal colic: alternative diagnoses at unenhanced helical CT. 1548 35

We identified 40 pediatric patients with urolithiasis. There were 27 boys and 13 girls. Initial symptoms were abdominal pain, with or without microscopic hematuria in 40% of the cases, and urinary tract infection/pyelonephritis in 25% of the cases. Stones were made of struvite (35% of the cases), calcium-phosphate (25%) or calcium-oxalate (20%). The high prevalence of struvite stones reflects the importance of urinary tract infection a major cause of urolithiasis in that specific age group. Hypercalciuria was the most common urinary biochemical abnormality, found in more than 50% of the children. In the absence of a spontaneous passage of the stone, extra-corporeal shock wave lithotripsy represents an excellent therapeutic option. This article emphasizes the importance of stone analysis and extensive biochemical investigations in children with urolithiasis, in order to avoid recurrence and potential progression towards chronic renal failure.
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PMID:[Urinary calculi epidemiology in children]. 1549 64

The objectives of the present study were to investigate the gross and histopathological findings in non-obstructive urolithiasis. Pathological examinations were carried out on 102 cattle kidneys with non-obstructive urolithiasis. The common gross lesions were cyst formations in the kidney lobes, hyperaemia and haemorrhage. The weight of the stones differed from 0.02 to 237.44 g and the colour changed brown to white. The calculi had different shapes. At histopathological examination of the kidneys slight to severe mononuclear cell infiltrations were commonly observed. Haemorrhage and connective tissue proliferations were also seen. Neutrophil leucocyte infiltrations caused by pyelonephritis were observed in some cases and multiple stone formations were found in these cases. Widening of the Bowman's space was a common histopathological finding especially when the stones were big or the inflammatory reaction was severe. Calcium deposits and eosinophylic material were found in the medullary tubules and pelvis renalis lumens in some kidneys. Giant cell formations around the stone reactions were rarely observed. Hyperplasia of the pelvis renalis and tubulus epithelium was another finding which occurred seldom. Whereas sand-like material accumulation seen in urinary bladders in some cases, no obstruction was observed in the urinary canal in this study.
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PMID:Kidney pathology in non-obstructive urolithiasis in cattle. 1561 Apr 81

Author presents and analyses informations of non-medical texts of Byzantine historians and chroniclers concerning diseases of Byzantine emperors, concluding that diseases were implicated in certain political and military difficulties. Only one third of the emperors died due to natural causes (i.e. illnesses). Some historians, such as Anna Comnena and Michael Psellos had studied medicine, both of them had excellent knowledge of medical theories of their times. Some diseases in Byzantium were widespread and had high morbidity. This material gives an indication that arthritis (resembling gout) tyrannised a great number of emperors. Contemporary historians maintain that the main causes of gout were overconsumption of alcoholic drinks and food. Other very serious conditions were acute and chronic pyelonephritis and urolithiasis. Relatively frequent conditions of the emperors included pestilential diseases (dysentery, typhoid fever, etc.), psychiatric disorders, epilepsy and arteriosclerosis.
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PMID:[Ill-conditioned rules on the throne of Byzantium]. 1571 71

In 1988-2003 we operated 156 patients with various ureteral lesions. Of them 7 patients (6 males and 1 female, mean age 34-43 years) received kidney transplant (autotransplantation). Ureteral lesions were caused by previous surgery (n=3), gunshot wound (n=2), urolithiasis (n=2. The follow-up results (for 15 period maximum) show that operative outcomes were satisfactory in 6 patients. One transplant was removed 7 days after the transplantation because of purulent pyelonephritis and necrosis of the ureter. The rest patients retain good function of the transplanted kidney and passability of the upper urinary tract. Thus, surgical autotransplantation of the kidney performed in affected middle and low thirds of the ureter is an alternative to life-long nephrostomy and nephrectomy and has a good long-term prognosis in relation to function of a transplanted kidney.
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PMID:[Autotransplantation of the kidney in ureteral injuries]. 1598 23

Ten clinical cases of neuromuscular dysplasia of the ureter (NMDU) are reported. Eight patients were young (24-38 years), two--of the middle age (41-58 years). NMDU was bilateral in two patients. Ureteral achalasia of the congenital solitary kidney occured in one case. One 28-year-old female with megaureter of the solitary kidney had interstitial cystitis. Clinical picture of the disease was characterized primarily with acute pyelonephritis, pain and secondary urolithiasis. Surgical treatment consisted in resection of the affected part of the ureter with modeling of the lumen of the latter on the drainage and Boari plastic repair. Bilateral Boari operation was made in 2 patients. In one case of ureteral achalasia and ureterocele direct ureterocystoanastomosis was created with good result. Sigmocystoplasty with transplantation of the solitary kidney ureter into the intestinal transplant was made in the patient with scar contracture of the detrusor and megaureter. Functional result of the operation was good. Complications were registered in 4 patients, 2 of which were reoperated. In nine patients of ten good and satisfactory functional results were obtained.
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PMID:[Surgical treatment of neuromuscular dysplasia of the ureter]. 1609 12

We studied cytomembranes of the interstitial tissue of renal medullary layer obtained by lifetime biopsy of renal tissue in the course of pyelolithotomy in 46 patients with urolithiasis and secondary pyelonephritis. Biopsy structure was controlled with histological methods using standard staining. Basic phospholipids and cholesterol fractions in renal tissue cytomembranes were assayed at thin layer chromatography. The findings show significant changes in a nephron cytomembrane lipid phase in patients with urolithiasis and secondary pyelonephritis. There was a structural rearrangement of lipid biolayer of renal tissue cell membranes in response to microbial inflammation. Thus, use of membrane-stabilising drugs are grounded in patients with secondary pyelonephritis and urolithiasis.
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PMID:[Lipids content in renal tissue membranes in patients with urolithiasis and secondary pyelonephritis]. 1628 43

We describe the first case of efavirenz-induced urolithiasis in a 47-year-old HIV-positive patient. Urinary obstruction led to pyelonephritis and septic shock, requiring emergency ureteral catheterisation. The subsequent clinical course was favourable, allowing the patient's discharge on day 5. A 7 mm, radio-translucent, non-crystalline, beige stone was extracted during catheterisation. Stone analysis by Fourier transform infrared spectrometry, liquid chromatography and mass spectrometry revealed a stone composed of efavirenz (EFV) metabolites M4, M5, M8 (as described by Mutlib et al. in 1999) and approximately 50% of unspecified proteins. EFV is a non-nucleoside reverse transcriptase inhibitor introduced to European markets in 1999. It is principally metabolised by cytochrome P450 3A4 and 2B6. Of the dose, 14-34% is excreted in the urine, 1% as unchanged drug. The patient had been taking 600 mg EFV per day for 3 years. As EFV-induced urolithiasis has not been reported so far, we would like to draw the attention of the medical community to this potentially severe complication.
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PMID:Efavirenz-induced urolithiasis. 1662 85


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