Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0000737 (abdominal pain)
 31,184 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Urease of Helicobacter pylori (formerly Campylobacter pylori) is believed to represent a critical virulence determinant for this species. Ammonia generated by hydrolysis of urea may protect the acid-sensitive bacterium as it colonizes human gastric mucosa. An H. pylori strain, cultured from a gastric biopsy of a patient with complaints of abdominal pain and a history of peptic ulcer disease, was isolated on selective medium and cultured in Mueller-Hinton broth supplemented with 4% fetal calf serum. Whole cells were ruptured by French pressure cell lysis, and soluble protein was chromatographed on DEAE-Sepharose, phenyl-Sepharose, Mono-Q, and Superose 6 resins. Purified urease represented 6% of the soluble protein of crude extract, was estimated to have a native molecular size of 550 kilodaltons (kDa), and was composed of two distinct subunits of apparent molecular sizes of 66 and 29.5 kDa. On the basis of subunit size, a 1:1 subunit ratio as measured by scanning densitometry of Coomassie blue-stained sodium dodecyl sulfate-polyacrylamide gels, and estimated native molecular size, the data are consistent with a stoichiometry of (29.5 kDa-66 kDa)6 for the structure of the native enzyme. Km for urea was estimated at 0.2 mM. By N-terminal analysis, the 29.5-kDa subunit of H. pylori urease was found to share significant amino acid sequence similarity with the smallest of three subunits of the Proteus mirabilis and Morganella morganii ureases, as well as to the amino terminus of the unique jack bean subunit. The 66-kDa subunit also shared up to 80% similarity with the largest of three subunits of P. mirabilis, M. morganii, and Klebsiella aerogenes ureases and to internal sequences (amino acids 271 to 285) of the jack bean urease subunit. Thus, the amino acid sequence is conserved among ureases with one, two, and three distinct subunits, suggesting a common ancestral urease gene. Also, urease subunits of M. morganii and jack bean were specifically recognized by antisera raised against the 66-kDa subunit of H. pylori urease, demonstrating that at least some antigenic determinants were conserved among ureases from different species.
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PMID:Purification and N-terminal analysis of urease from Helicobacter pylori. 231 39

From January 1981 to December 1987, 346 children with urinary tract infections, proved by urine culture, were admitted to the Department of Pediatrics, Mackay Memorial Hospital. The ratio of male to female was 3.0 in children below 2 years, and 0.8 in children above 2 years, of age. The urine specimens were collected from suprapubic punctures in 281 cases (81.2%). Fever was the most common clinical manifestation. In children below two years old, other common symptoms and signs were body weight loss or poor gain, feeding problems, diarrhea, irritability, jaundice, and abdominal distension. In older children, urinary frequency, dysuria, enuresis, loin and abdominal pain were frequently found. Hematuria and edema were occasionally noted in all age groups. Microscopic examination of 329 centrifuged urine specimens revealed: 256 cases (77.8%) had more than 5 leukocytes per high power field, 233 cases (70.8%) had more than 10 leukocytes. Three hundred and seventy positive urine cultures were obtained from these patients. E. coli was isolated in 273 cases (73.6%), followed by Klebsiella spp., 34 cases (9.2%); Proteus spp., 27 cases (7.3%); Enterococcus, 21 cases (5.7%); Enterobacter spp., 9 cases (2.4%); Pseudomonas aeruginosa, 8 cases (2.2%); Citrobacter spp., 7 cases (1.9%); Morganella morganii, 6 cases (1.6%); Acinetobacter spp., 6 cases (1.6%); etc. Candida albicans was isolated from three patients. Two organisms were isolated in 26 cultures; 3 organisms, in 3, and 4 in 1.
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PMID:Urinary tract infections in children. 263 2

Two patients exhibited reactive arthropathy in association with chronic diarrhoea and abdominal pain. Rising titres of agglutinating antibody to Yersinia enterocolitica O3 were observed in association with arthropathy. Morganella morganii was isolated from faeces of one patient in heavy growth. In both patients, absorption of the sera with morganella antigen abolished yersinia reactivity. Morganella titres were more than 8 times the yersinia titres and were unaffected by absorption with Yersinia. Neither patient had detectable antibody to the predominant enterobacterial species present in faeces. One patient developed acute cystitis with Proteus mirabilis and had no serological response to the proteus isolate. We conclude that the elevated morganella titres were specific. The role of M. morganii in intestinal disorders remains to be established, but from our findings, it should be added to the list of organisms associated with reactive arthropathy.
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PMID:Association of reactive arthropathy and Morganella morganii cross reacting with Yersinia enterocolitica. 319 11

Campylobacter pylori, a suspected agent of gastritis and peptic ulceration, rapidly hydrolyzes urea. Because urease serves as the basis of detection of the organism in gastric biopsies and may represent an important virulence factor, biochemical characteristics of the enzyme were determined. C. pylori was isolated from antral biopsies from 10 patients with complaints of abdominal pain or history of peptic ulcer disease. All isolates were urease positive, with an average rate of hydrolysis by cell lysates being 36 +/- 28 mumol of NH3 per min per mg of protein, more than twice that of Proteus mirabilis and 10 times that of other urinary tract isolates. The enzyme had an apparent molecular weight of 625,000 +/- 15,000 by column chromatography, an isoelectric point of 5.9, a Km of 0.8 +/- 0.1 mM urea, an optimal temperature of 45 degrees C, and an optimal pH of 8.2. Ten isolates tested produced ureases with identical electrophoretic mobilities on nondenaturing 5% polyacrylamide activity gels. Acetohydroxamic acid (100 micrograms/ml), hydroxyurea (85 micrograms/ml), flurofamide (0.05 micrograms/ml), and EDTA (8 mM) inhibited enzyme activity by 50%. Cell lysates retained 50% of initial urease activity after 6 days and 40% activity after 18 days when stored at 4 degrees C in 20 mM sodium phosphate, pH 6.8. At -70 degrees C for 18 days, 1 mM EDTA or 15% glycerol preserved 40 or 34%, respectively, of initial activity. The urease of C. pylori appears to be biochemically unique from the enzymes of other common urease-producing species.
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PMID:Characterization of urease from Campylobacter pylori. 338 8

Ofloxacin, a new fluoroquinolone, was given to fifty patients (29 females and 21 males) aged 25 to 86 years with urinary tract infection or prostatitis. Urinary tract infections usually chronic and associated with urologic anomalies, included 17 cases of cystitis and 19 cases of pyelonephritis. 14 patients had prostatitis. Pathogens recovered from the urine were 26 E. coli, 2 Citrobacter, 4 Proteus mirabilis, 2 Klebsiella, 2 Enterobacter, 3 Serratia, 3 Staphylococcus aureus and 11 Pseudomonas. Minimal inhibitory concentrations of ofloxacin ranged from 0.03 to 0.12 microgram/ml (mean MIC: 0.6 microgram/ml) for 27 nalidixic acid-sensitive strains, and from 0.25 to 4 micrograms/ml (mean MIC: 1 microgram/ml) for 26 nalidixic acid-resistant strains. Ofloxacin was given as single drug therapy in all patients, in a daily dosage of 200 mg b.i.d. in 46 patients and 400 mg b.i.d. in 4 patients, for 7 to 97 days (average 40 days). Follow-up after discontinuation of treatment was 3 to 12 months. Therapeutic results were as follows: 17 cures for the 17 cystitis patients, 17 cures and 2 failures by relapse for the 19 cases of pyelonephritis, and 11 cures, 1 failure by persistence of bacteriuria and failure by relapse for the 14 cases of prostatitis. Digestive disorders, i.e. nausea, abdominal pain, constipation, occurred in 6 patients and required withdrawal of the drug in 1; candidiasis of the tongue was recorded in one patient and digestive complaints with neuropsychic disorders in another. Two patients had short-lived, moderate leukopenia with granulopenia and one had transient worsening of preexisting renal failure. Hepatic tolerance was good.
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PMID:[Ofloxacin (RU 43280): clinical evaluation in urinary and prostatic infections]. 353 29

The incidence of pelvic inflammatory disease (PID) attributable to IUD use has been increasing, especially after the removal of the Dalkon shield from the market, but this relationship has not been settled conclusively. In recent decades PID included a variety of infections, but lately the definition of PID has meant acute ascending infections of the female genital tract. Its most common risk factors include promiscuity of IUD use, although this can be reduced to one fourth by regular checkups and proper hygiene. The frequency of PID is estimated at 2-5% of IUD users. Microorganisms contributing to PID include Neisseria gonorrhoeae, Chlamydia trachomatis, Mycoplasma hominis, Escherichia coli, Proteus, Staphylococcus epidermis, Haemophilus influenzae, Bacteroides, Peptococcus, Peptostreptococcus, Clostridium, and Actinomyces israelii, The differentiation of actinomycosis (AC) and pseudoactinomycosis (PAC) is well advised. The potential of IUD use in increasing the risk of AIDS should not be discounted. The clinical picture of PID is varied, it can be mild requiring conservative drug therapy; with medium severity requiring removal of the IUD and drug therapy; severe necessitating removal, antibiotics and sulfonamide treatment and laparotomy; and very severe with potentially fatal generalized sepsis. In addition to antibiotics, e.g., penicillin, treatment can include the so called catastrophy combination of Mandokef- Metronidazol-Gentamycin. An analysis of the data of 8536 IUD fittings in Debrecen, Hungary showed 1.4% removals due to PID after 4 years, 694 patients (8.1%) had lower abdominal pain 73 of which (0.9%) had palpable resistance, and suppuration occurred in only 30 cases (0.4%). Treatment included Semicillin or Tetran, or removal of the IUD, and even surgery if no improvement resulted. Prevention of PID include elimination of risk factors, the careful selection of IUD users, regular checkups, the use of copper (Cu) T device, and strict adherence to professional standards.
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PMID:[The role of intrauterine contraceptive devices in the development of inflammatory processes in the small pelvis]. 376 5

One hundred and fifty children up to the age of 12 years with documented evidence of renal or ureteric stones were studied between July 1973 and June 1983. The peak age group was between 10 and 12 years, the male to female ratio being 1.9:1. Abdominal pain was the commonest presenting symptom (66.6%). Asymptomatic stones or vague symptoms in 23 patients warrant a higher index of suspicion of renal stone disease in children. Thirty patients had associated renal insufficiency. One third of the children had a positive urine culture, Proteus spp. being the commonest organism. Congenital anomalies of the urinary tract were seen in 12% of patients. In the majority (59%), aetiological factors related to stone formation could not be identified. One hundred and thirty patients underwent surgery for removal of stones. Analysis of calculi by X-ray diffraction and infrared spectroscopy revealed that stones were predominantly of mixed type, calcium oxalate being the commonest compound. The overall recurrence rate following surgical removal was 15%.
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PMID:Renal stones in children in Pakistan. 408 18

Xanthogranulomatous pyelonephritis (X.G.P.) is a rare unilateral manifestation of chronic interstitial nephritis. 4 new cases of X.G.P. in children are reported. The authors review 60 cases of the literature since 1963. The X.G.P. has no predominant sex distribution. The age extended especially between 1 to 5 years. The diffuse type is more common in boys, and the localized type in girls. The clinical signs : fever, abdominal pain, weight loss, urinary infection, abdominal mass. Proteus Mirabilis is the main organism in the diffuse form and Escherichia Coli in the focal form. Actually, the disease is often diagnosed before surgery. The treatment is always nephrectomy and the prognosis is very good (benign). The final diagnosis of X.G.P. can only be made by histological examination. Etiopathogenesis remains obscure : urinary tract infection and obstruction, arterial and veinous lesions, local immunity deficiency.
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PMID:[Xanthogranulomatous pyelonephritis in children. Report of 4 cases]. 642 3

The authors report 17 personal cases of lithiasis of the upper urinary tract discovered in the course of pregnancy. They discuss the diagnostic and therapeutic problems, taking into account the double risk of mother and foetus. The essential diagnostic sign is renal colic, with or without fever. Spontaneous excretion of these calculi is possible, but in 8 of the 17 cases, a ureteric catheter had to be passed or an operation was required. Neither the delivery nor the health of the infants delivered seemed to be harmed by this renal calculi disease. The authors recall that the most common cause of non-obstetrical abdominal pain in the course of pregnancy is in fact urinary calculi. The incidence is about 1 cases of lithiasis per 1,000 pregnancies. It appear that a physiological hyperparathyroidism of pregnancy is responsible for a hypercalciuria which could be a factor favouring the development of lithiasis during pregnancy. The important point is to know how to distinguish those forms of pyelonephritis of pregnancy which are due to a stone obstructing the upper urinary tract, as any purulent retention in the upper tract can lead to a pyonephrosis, a bacteraemia or even a septicaemia. The presence of the foetus makes interpretation of a plain abdominal film difficult. In any case, its indication is questionable, whenever the urine is septic, particularly with Proteus.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Lithiasis of the upper urinary tract and pregnancy]. 663 Oct 37

Based on a personal series of 310 observations, the authors have studied the presenting signs, the etiology, the urinary bacteriology and the localization of the stone in children with urolithiasis. Urinary tract infection is the presenting sign in 55% of the cases, hematuria in 23% and abdominal pain in 20%. Urinary malformation is associated in 26% of cases, whatever the age at diagnosis. The urinary bacteria found in 55% of cases is Proteus. Localization was in the kidney in 228 cases, in the ureter in 71 cases, the bladder in 45 cases and in the urethra in 5 cases.
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PMID:Urolithiasis in children. Presenting signs, etiology, bacteriology and localisation. 667 90


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