Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound   Target Concepts: Gene/Protein Disease Symptom Drug Enzyme Compound

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Query: EC:3.1.3.1 (alkaline phosphatase)
47,916 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Since 1973 30 patients with urinary tract infections (UTI) or pyelonephritis have been treated with sisomicin, a new aminoglycoside, in a daily dose of 2 mg/kg for a period of seven to nine days. From a clinical point of view the result of treatment was good. Complete resolution was achieved in 17 patients, improvement in nine, and there was no effect in four patients. Thirty-five causative organisms (Escherichia coli = 23, Proteus sp. = 7, Klebsiella sp. = 3, Pseudomonas aeruginosa = 1, Citrobacter = 1) were isolated before treatment. Thirty of the organisms were eliminated during treatment, but seven reappeared during the follow-up period; five strains persisted. Side effects observed consisted of reversible increase of serum creatinine in four patients, excretion of granular casts in 14 patients, and a transient rise of alkaline phosphatase, SGOT and/or SGPT in five patients. No signs of ototoxicity or any other adverse reactions were found and local tolerance was good. In 20 patients blood samples for assay were obtained daily one hour after i. m. injection of 1.0 mg/kg. No evidence of drug accumulation in the serum was found: the mean serum concentrations one hour after injection remained between 3.4 and 3,9 microgram/ml during the entire treatment period. Sisomicin is a highly effective antibiotic for the treatment of UTI caused by gramnegative pathogens. On account of its potential toxicity however, it should be used, like other aminoglycosides, only in selected cases.
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PMID:[Efficacy, tolerance, and pharmacokinetics of sisomicin in urinary tract infections (author's transl)]. 10 44

The uropathogenic Gram-negative bacterium Proteus mirabilis exhibits a form of multicellular behaviour termed swarming, which involves cyclical differentiation of typical vegetative cells into filamentous, multinucleate, hyperflagellate swarm cells capable of rapid and co-ordinated population migration across surfaces. We observed that differentiation into swarm cells was accompanied by substantial increases in the activities of intracellular urease and extracellular haemolysin and metalloprotease, which are believed to be central to the pathogenicity of P. mirabilis. In addition, the ability of P. mirabilis to invade human urothelial cells in vitro was primarily a characteristic of differentiated swarm cells, not vegetative cells. These virulence factor activities fell back as the cells underwent cyclical reversion to the vegetative form (consolidation), in parallel with the diagnostic modulation of flagellin levels on the cell surface. Control cellular alkaline phosphatase activities did not increase during differentiation or consolidation. Non-flagellated, nonmotile transposon insertion mutants were unable to invade urothelial cells and they generated only low-level activities of haemolysin, urease and protease (0-10% of wild type). Motile mutants unable to differentiate into swarm cells were comparably reduced in their haemolytic, ureolytic and invasive phenotypes and generated threefold less protease activity. Mutants that were able to form swarm cells but exhibited various aberrant patterns of swarming migration produced wild-type activities of haemolysin, urease and protease, but their ability to enter urothelial cells was three- to 10-fold lower.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Co-ordinate expression of virulence genes during swarm-cell differentiation and population migration of Proteus mirabilis. 149 87

Benzoyl- and isopentenoyl phosphoric triamides (BPA and IPA) strongly inhibited urease activities from jack bean, soybean, watermelon seed, Proteus mirabilis, P. rettgeri, P. vulgaris, Mycobacterium smegmatis, and Ureaplasma urealyticum. Their I50 values (the final concentration causing 50% inhibition), independent of enzyme source, were 2-21 nM, which are about 1,000-fold lower than that of caprylohydroxamic acid, one of the most potent urease inhibitors. ATP-urea amidolyase activity was inhibited 50% by BPA at a higher concentration of 0.28 mM, but was not affected by IPA even at 1.3 mM. Thirteen kinds of hydrolases (trypsin, chymotrypsin, thermolysin, leucine aminopeptidase, papain, lipase, alpha-amylase, glucuronidase, asparaginase, arylsulfatase, alkaline phosphatase, acid phosphatase, and true cholinesterase), two oxidoreductases (catalase and alcohol dehydrogenase), three transferases (glutamic-oxaloacetic aminotransferase, gamma-glutamyl transpeptidase, and arylsulfotransferase) and two kinases (pyruvate kinase and creatine kinase) were not affected at all even at 1 mM BPA and IPA. Exceptionally, pseudo-cholinesterase from human serum was inhibited by BPA and IPA, whose I50 values were 70 nM and 10 muM, respectively, using acetylthiocholine as a substrate. These values increased to 0.55 muM and 54 muM, respectively, when acetylcholine was used as a substrate. These results show that N-acylphosphoric triamides potently and specifically inhibit urease activity at concentrations of nM order.
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PMID:Specific inhibition of urease by N-acylphosphoric triamides. 384 42

A total of 466 patients were treated with cefoperazone. The drug was usually administered by drip infusion of 2 to 4 gm/day. Therapy was described as markedly effective and moderately effective in 64 of 77 patients (83.1%) treated for urinary tract infections; 253 of 316 patients (80.1%) treated for respiratory infections; 37 of 48 patients (77.1%) treated for liver biliary duct infections; ten of 16 patients (62.5%) treated for septicemia; and seven of nine patients (77.8%) being treated for other infections. Overall, cefoperazone was effective 79.6% of all patients treated. With respect to bacteriological activity, the overall eradication rate for gram-negative organisms (including Pseudomonas aeruginosa, Klebsiella sp, Escherichia coli, Haemophilus influenzae, Enterobacter sp, and Proteus sp) was 81% (182/225) and for gram-positive (Staphyloccocus aureus, Streptococcus pneumoniae and Streptococcus faecalis) 90% (36/40). Of 205 patients who failed to respond to previous antibiotic therapy, 67.8% were treated effectively with cefoperazone. Side effects, such as skin eruption, pyrexia and diarrhea, occurred in only 4.8% of patients treated, while laboratory abnormalities, such as elevated glutamic-oxaloacetic transaminase, glutamic-pyruvic transaminase, alkaline phosphatase, and eosinophil values, occurred in only 6.4% of the treated patients. None of these abnormal values were of clinical significance.
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PMID:Clinical trials with cefoperazone in the field of internal medicine in Japan. 644 92

Between the years 1981 and 1983 we treated with Ceftriaxone (Cx) 34 children--aged 15 days to 13 years--affected with serious infections: 18 infections of lower respiratory tract, 1 sepsis caused by E. Coli, 1 meningitis with cloudy cerebrospinal fluid, 1 submandibular adenitis with otitis, 1 otitis, 12 infections of the urinary tract caused by Proteus mirabilis, E. Coli, Klebsiella oxitocica and Klebsiella pneumoniae. Whenever bacteria were isolated by cultures, sensibility in vitro to Cx was tested. Cx was given i.m. or i.v. at a dose ranging from 50 to 135 mg/Kg/die according to the age and the seriousness of the infections; in 17 children Cx was administered once daily, in the other patients in two divided doses. The following laboratory measurements were obtained before, during and after treatment: complete blood cell count, platelet count, total bilirubin, creatinine, SGOT, SGPT, alkaline phosphatase and urinalysis. Patients were also monitored daily for clinical signs and symptoms such as fever, general conditions, heart rate, respiratory rate, blood pressure. Twenty children showed a good clinical response (1 sepsis, 1 otitis, 1 adenitis, 1 meningitis, 12 infections of the urinary tract, 4 infections of the lower respiratory tract); urine sterilization was achieved after three days of therapy in all patients with infections of the urinary tract. Remarkable clinical and radiological improvement in 9 patients with infections of lower respiratory tract was observed while in only 4 children with bronchopneumonia therapy was ineffective although the dosage of Cx was adeguate; in these patients a further antibiotic treatment was necessary for a complete recovery.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Evaluation of the efficacy and tolerance of ceftriaxone in childhood]. 654 91

After major surgery some patients, especially those with an infectiouss process or sepsis, develop jaundice which has been called reactive hepatitis, toxic hepatitis, septic hepatitis or benign postoperative cholestasis; these terms do not have a very precise connotation. Eighty patients with postoperative sepsis and jaundice where studied, excluding those with liver or biliary tract disease, hepato-toxic drugs or repeated halogenated anesthetics. All of them had complete laboratory tests, cultures and percutaneous liver biopsy when it was feasible. Thirty five patients were submitted to percutaneous liver biopsy and they are the material for this paper. There was no correlation with the type and duration of the operation, postoperative complications, shock or kind of anesthesia. The main laboratory changes were leukocytosis, neutrophilia, elevation of the bilirubins mainly the direct type and increase of the alkaline phosphatase; transaminases were within normal limits. Cultures were positive in 76% of the cases predominating E. coli, Pseudomonas a. and Proteus, anaerobics were present in 22.8% of the cases. The liver biopsy showed lymphoctic infiltration, hyperplasia of the Kupffer cells, hepatic regeneration and turbid tumefaction; pericholangitis, focal necrosis, retention of pigment and steatosis were less frequent. We consider that the best denomination of these complications is benign postoperative cholestasis.
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PMID:[Postoperative reactive hepatitis in the septic patient]. 728 Apr 56

Cell-free preparations of Proteus mirabilis contained a phosphatase (EC 3.1.3.1), whose activity surpassed that of alkaline phosphatase from Escherichia coli. Phosphatase was also found in the culture liquid of P. mirabilis. The composition of proteins displaying enzyme activity was assayed by polyacrylamide gel electrophoresis. Enzyme synthesis was studied at various stages of bacterial growth. Biosynthesis of phosphatase in P. mirabilis (similarly to that in other bacteria) was shown to be induced under conditions of inorganic phosphate deficiency in the medium.
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PMID:[Phosphatase from Proteus mirabilis]. 1135 20

The ability to produce hydrolytic enzymes--DNAses, RNAses, alkaline phosphatases, chitinases has been studied in 316 strains of bacteria isolated from mussel Mytilus trossulus. Strains of Vibrio spp. produced all the spectrum of examined enzymes, bacteria of Pseudoalteromonas genus produced alkaline phosphatase and DNAse. Chitin-degrading enzymes were found in Vibrio and Cytophaga--Flavobacterium--Bacteroides group. Bacillus and Vibrio spp. strains produced most actively RNAses. The presence of proteinases, amylases and lipases has been found in all tested groups of bacteria. The antagonistic activity of a number of isolated strains against Candida albicans, Proteus vulgaris and Escherichia coli has been studied.
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PMID:[Hydrolytic activity of marine bacteria associated with the mussel Mytilus trossulus]. 1576 77

Proteus mirabilis is a ubiquitous bacterium associated with complicated urinary tract infection (UTI). Mutagenesis studies of the wild-type strain HI4320 in the CBA mouse model of ascending UTIs have identified attenuated mutants with transposon insertions in genes encoding the high-affinity phosphate transporter Pst (pstS, pstA). The transcription of the pst operon (pstSCAB-phoU) and other members of the phosphate regulon of Escherichia coli, including alkaline phosphatase (AP), are regulated by the two-component regulatory system PhoBR and are repressed until times of phosphate starvation. This normal suppression was relieved in pstS::Tn5 and pstA::Tn5 mutants, which constitutively produced AP regardless of growth conditions. No significant growth defects were observed in vitro for the pst mutants during the independent culture or coculture studies in rich broth, phosphate-limiting minimal salts medium, or human urine. Mutants complemented with the complete pst operon repressed AP synthesis in vitro and colonized the mouse bladder in numbers comparable to the wild-type strain HI4320. Therefore, the Pst transport system imparts a significant in vivo advantage to wild-type P. mirabilis that is not required for in vitro growth. Thus, the Pst transporter has satisfied molecular Koch's postulates as a virulence factor in the pathogenesis of urinary tract infection caused by P. mirabilis.
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PMID:The high-affinity phosphate transporter Pst is a virulence factor for Proteus mirabilis during complicated urinary tract infection. 1819 41

Yellow catfish (Pelteobagrus fulvidraco) has become a commercially important fish species in China and eastern Asia. High-density aquaculture has led to congestion and excessive stress and contributed to bacterial infection outbreaks that have caused high mortality. We investigated the effects of dietary supplementation with astaxanthin and emodin alone and in combination on the growth and stress resistance of yellow catfish. After 60 days of feeding, each group of fish (control, astaxanthin, emodin, and astaxanthin plus emodin (combination) groups) was exposed to acute crowding stress for 24 h, and a subsample of fish from the four groups was challenged with the bacterial septicemia pathogen Proteus mirabilis after the end of the crowding stress experiment. Compared with the control, the astaxanthin and emodin groups showed increases in serum total protein (TP), hepatic superoxide dismutase (SOD) activity and hepatic heat shock proteins 70 (HSP70) mRNA levels at 12 and 24 h after the initiation of crowding stress. The combination group exhibited increases in alanine aminotransferase (ALT) activity, aspartate aminotransferase (AST) activity, serum TP, hepatic SOD activity and hepatic HSP70 mRNA levels within 24 h after the initiation of crowding stress. However, decreases relative to the control were observed in the serum cortisol and glucose contents in the three treatment groups at 12 and 24 h after the initiation of crowding stress, in ALT and AST activity in the astaxanthin and emodin group at 24 h after the initiation of crowding stress, and in the serum lysozyme activity, serum alkaline phosphatase (ALP) activity, and hepatic catalase (CAT) and malondialdehyde (MDA) activity in the combination group at 24 h after the initiation of crowding stress. Additionally, the cumulative mortality after P. mirabilis infection was lower in all three treatment groups (57.00%-70.33%) than in the control (77.67%). Dietary supplementation with astaxanthin and emodin decreased the specific growth rate (SGR) and weight gain (WG) of healthy yellow catfish, although significant differences in mortality were not observed. These results indicate that dietary supplementation with 80 mg/kg astaxanthin and 150 mg/kg emodin can improve the anti-oxidative capabilities, hepatic HSP70 levels, and resistance to acute crowding stress of yellow catfish. Finally, an appropriate strategy for enhance yellow catfish stress resistance and disease resistance is proposed.
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PMID:Effects of astaxanthin and emodin on the growth, stress resistance and disease resistance of yellow catfish (Pelteobagrus fulvidraco). 2689 24


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