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:3.1.30.2 (endonuclease)
18,621 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Adenovirus isolates from 52 patients with ocular infection over a 3-year period were typed by restriction endonuclease analysis in a clinical laboratory. The results indicated that adenovirus type 8 was the most common cause of adenovirus eye infection during this period, being responsible for 42 (81%) of the 52 cases. Of 42 adenovirus type 8 isolates, 22 showed variant patterns by restriction endonuclease analysis and required multiple enzyme digests for identification. These isolates were readily identified by neutralisation tests.
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PMID:Restriction endonuclease analysis of adenovirus isolates from sporadic and epidemic ocular infections: experience in a clinical laboratory. 800 29

An outbreak of adenovirus type 4 conjunctivitis occurred in South Australia between April and November 1992. Eye swabs were submitted by general practitioners and ophthalmologists who had seen patients with clinical conjunctivitis or keratitis. Apart from interfamilial spread, there were no other common epidemiological factors. Adenovirus was isolated from the eye swabs of 38 patients. Isolates were typed by neutralisation tests and restriction endonuclease cleavage patterns and found to be adenovirus type 4. This report serves to illustrate an infrequent cause of epidemic conjunctivitis, namely adenovirus type 4. There was no demonstrable focus of the outbreak.
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PMID:Outbreak of adenovirus type 4 conjunctivitis in South Australia. 810 66

Nosocomial transmission of adenovirus type 3 associated with fatalities in infants has not been frequently reported. This report describes the nosocomial spread of adenovirus types 2 and 3 among infants with bronchopulmonary dysplasia in a chronic (transitional) care facility. The index case developed pneumonia with a clinical deterioration in respiratory status 8 days after admission. Within the next 10 to 30 days 9 other infants and 2 health care personnel became ill with respiratory symptoms. Three of these 10 infants had progressive respiratory failure and 2 of them died. All of these infants had underlying chronic lung disease of bronchopulmonary dysplasia. The overall attack rate was 30% (10 of 33). Further spread of adenovirus was prevented by using barrier precautions and masks while performing tracheostomy care. Adenovirus isolates were serotyped as Ad3 in 4 patients and 1 staff member, as Ad2 in 3 patients, and as a combination of Ad2 and Ad3 in 1 patient. Two fatalities were associated with Ad3 infection. Three isolates from 2 patients and 1 staff member were not available for typing. Restriction endonuclease analysis was performed on all of these isolates of Ad3 and Ad2. There was no genetic heterogeneity in the isolates, suggesting a common source.
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PMID:Nosocomial adenovirus infection: molecular epidemiology of an outbreak. 826 82

A mixture of adenoviruses 31 and 49 was isolated from the brain of an AIDS patient with encephalitis. Adenovirus hexon protein was detected in neurons by indirect immunofluorescence. By restriction endonuclease analysis both adenovirus 31 and 49 were shown to be new genotypes. This is the first report of the isolation of a mixture of adenoviruses from adenovirus encephalitis and the first association of adenovirus 49, a new candidate serotype, with encephalitis.
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PMID:Adenovirus mixture isolated from the brain of an AIDS patient with encephalitis. 883 Jan 21

Adenovirus type 7 (Ad7) was rarely isolated in Japan till 1994, but during April 1995 to August 1996, isolations of Ad7 were reported 230 cases. We isolated Ad7 in January and July 1996 in Fukuoka prefecture. We analyzed its genome type by using 14 restriction endonuclease and studied seroepidemiology of Ad7 infection in Fukuoka prefecture. Isolated Ad7 strains were identical by 14 restriction endonuclease. Between new Ad7 isolates and prototype (Gomen; Ad7p), 4 restriction endonuclease patterns were identical but 10 restriction endonuclease patterns were different. From the result of restriction endonuclease pattern analysis, genome type of Ad7 isolated in Fukuoka may be the same to Ad7c reported by Noda et al. (1996). The alterations in the cleavage sites of 10 restriction endonucleases between new Ad7 isolates and Ad7p were revealed at least 12 sites. Ad7 antibody positive rates in serum specimens collected in Fukuoka Prefecture were 3.6% in 1994 and 9.7% in 1996.
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PMID:[Analysis of genome types of adenovirus type 7 isolated in Fukuoka Prefecture in 1996]. 933 25

An outbreak of acute keratoconjunctivitis in an ophthalmology department affected 15 patients and seven members of staff and necessitated temporary closure of the unit. Adenovirus (Ad) was isolated from eye swabs taken during the outbreak, but typing of the isolates by virus neutralisation assay proved unsatisfactory, wrongly assigning the isolate to serotype 10. A robust and rapid method for preparing microgram amounts of Ad DNA from infected cells was devised and used as the basis of a non-radioactive method for routine genotyping of adenovirus clinical isolates. All isolates associated with the outbreak, and one from a patient presenting at a nearby hospital during the outbreak, were found to have restriction endonuclease digestion patterns characteristic of Ad 37.
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PMID:An outbreak of epidemic keratoconjunctivitis caused by adenovirus type 37. 944 55

Adenovirus strains of a new type were isolated from patients with epidemic keratoconjunctivitis. They were not completely neutralized by any antiserum against adenovirus prototypes. PCR followed by restriction endonuclease analysis demonstrated that they were type 8. PCR followed by sequencing revealed a high homology rate between them and type 9.
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PMID:Adenovirus strains of subgenus D associated with nosocomial infection as new etiological agents of epidemic keratoconjunctivitis in Japan. 1048 16

Adenovirus type 7 causes worldwide respiratory tract infections, mainly in children. Severe systemic infections can occur, especially in immunocompromised patients and in patients with underlying chronic diseases. This report describes the first case of a fatal disseminated adenovirus type 7 infection in a child with Smith-Lemli-Opitz syndrome, a rare autosomal recessive disorder due to a primary enzymatic defect in cholesterol metabolism. Nasopharyngeal secretions and autopsy specimens including liver, lung, pleural fluid, and rectum were collected for viral culture. Adenovirus serotype 7 strains were obtained from all anatomic sites, except the liver. All these clinical isolates were analyzed using restriction endonuclease digestion of the genome, identifying them as genome type 7b, a virulent type. In this case, the fatal evolution could have been accelerated by the presence of an immunodeficiency although immunodeficiency is not included in the definition of Smith-Lemli-Opitz syndrome. The frequent recurrent banal infections in Smith-Lemli-Opitz syndrome could be prevented by a cholesterol supplementation regimen. Finally, this report emphasizes the need for efficient therapy for disseminated adenovirus infections, especially for virulent genome types.
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PMID:Fatal adenovirus type 7b infection in a child with Smith-Lemli-Opitz syndrome. 1150 45

The general adeno-associated virus(AAV) vector pACR-Neo was constructed by substituting AAV's construct gene with cassette that was composed of CMV-IE promoter, multiple cloning sites and SV40-polyA. After transfecting pACR-Neo into recombinant AAV's packaging cell line AE1201, which was infected by Adenovirus 5 before transfection, we got rAAV/ACR-Neo at the titer of 4.2 x 10(5) CFU/ml. Using rAAV/ACR-Neo infected host cell A549, the recombinant AAV could transfer reporter gene Neo into host cell and mediate the integration of viral genome into host cell's chromosome DNA. By extracting chromosome DNA of host cell A549 that had been infected by rAAV/ACR-Neo, and digestion respectively with restriction endonuclease PvuII and HindIII, each of which has only one cutting site within rAAV/ACR-Neo's genome. We did Southern blot to check the hybridization of endonuclease digested chromosome to digoxin labelled Neo gene probe. After analyzing the experimental results, we found that rAAV/ACR-Neo's genome had integrate into host cell's chromosome compared to wild type AAV's site-specific integration. Through this work, we constructed a general AAV vector successfully. It lays foundation for research on AAV vector and application on gene therapy.
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PMID:[The construction of a general adeno-associated virus vector]. 1251 94

Adenovirus are important pathogen primarily associated to respiratory infections of children and military personnel, even though it is also associated to cases of conjunctivitis and keratoconjunctivitis. We analyzed respiratory secretion collected from subjects with and without respiratory infection symptoms, being 181 civilians and 221 military subjects. The samples were inoculated in HEp-2 and/or A549 tissue cultures for viral isolation. Samples presenting cytopathogenic effect (CPE) in any tissue culture were tested by a polymerase chain reaction (PCR) assay to confirm adenovirus isolation. The isolates confirmed as adenovirus were further analyzed by restriction endonuclease assay for determination of viral species. Three isolates were identified as specie A (two from civilian and one from military), one isolate from military was identified as specie C, and one isolate from civilian was identified as specie D. For two isolates the specie could not be identified.
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PMID:Adenoviruses isolated from civilian and military personnel in the city of Rio de Janeiro, Brazil. 1450 54


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