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)

An epidemic of herpes simplex virus type 1 occurred in 60 of 175 wrestlers (34%) attending a four-week intensive training camp. Five of these 60 patients (8%) developed ocular involvement that included follicular conjunctivitis, blepharitis, and phlyctenular disease. Cultures of the conjunctiva and eyelid vesicles were positive for herpes simplex virus type 1 in four of the five patients with ocular disease. The viral isolates were compared by restriction-endonuclease analysis, which disclosed that three of the four isolates were the same strain. None of the patients had corneal involvement and there has been no evidence of viral recurrence to date. Herpes simplex virus type 1 is a health risk for wrestlers, and ocular infections are part of the clinical spectrum. Prompt diagnosis and appropriate management of the outbreak may reduce the severity of the outbreak transmission.
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PMID:Ocular involvement in an outbreak of herpes gladiatorum. 133 74

A patient with chronic, unilateral conjunctivitis is presented. The predominant bacterial flora consisted mainly of Prevotella intermedia (formerly Bacteroides intermedius) and Peptostreptococcus micros. Restriction endonuclease fingerprinting of genomic DNA demonstrated that P. intermedia most probably originated from the oral cavity. In the oral cavity this species was recovered from the dorsum of the tongue, the tonsillar area and the periodontal pockets. Topical treatment with various antibiotics had failed to cure the infection in the past. The condition was cured after systemic therapy with metronidazole and amoxicillin.
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PMID:[Chronic conjunctivitis caused by oral anaerobic germs]. 175 17

In this study, we report on a case of refractory, unilateral anaerobic conjunctivitis. The predominant anaerobic flora consisted of Prevotella intermedia (formerly Bacteroides intermedius) and Peptostreptococcus micros. By using the technique of restriction endonuclease fingerprinting of genomic DNA, it was shown that the P. intermedia likely originated from the oral cavity. Topically applied antibiotics had failed to suppress the infection in the past. Successful treatment was achieved after systemic administration of metronidazole plus amoxicillin.
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PMID:Chronic conjunctivitis caused by oral anaerobes and effectively treated with systemic metronidazole plus amoxicillin. 189 Jan 73

Five 13- to 18-month old Belgian Blue bulls were used in this experiment. Four bulls (Nos. 2, 3, 4 and 5) were inoculated intratesticularly with 10(5) plaque-forming units of bovine herpesvirus-4 (BHV-4) in each testicle (Day 0). The challenge BHV-4 strain was previously isolated from testicle cells of a bull exhibiting orchitis and azoospermia. The fifth bull (No. 1) was used as a control and received the same volume of uninfected cell culture supernatant. For 5 days, beginning on Day 51 post-infection, two bulls (Nos. 4 and 5) and the control bull (No. 1) received 0.1 mg kg-1 of dexamethasone. Unilateral castrations were then performed at regular intervals for viral examination. Treatment with dexamethasone reactivated latent BHV-4, but no clinical signs were observed in treated bulls until the end of the experiment (Day 93). Only Bull 3 showed conjunctivitis and temporary azoospermia. The virus was recovered from various samples showing that: (i) BHV-4 can be present in a latent state in the testicles and mononuclear blood cells; (ii) dexamethasone reactivates the virus; (iii) the virus is excreted by nasal and ocular routes. Each infected bull seroconverted and a booster antibody response appeared after dexamethasone treatment as shown by immunofluorescence. Neutralizing antibodies were detected in each bull by complement-dependent neutralization test with titres higher than those obtained by a classical neutralization test. No booster response of neutralizing antibodies was observed after dexamethasone treatment. The antigenically relevant envelope BHV-4 proteins were identified by Western blotting using sera samples from the animals. DNA restriction endonuclease profiles of viruses reisolated after primary infection and reactivation showed only small differences.
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PMID:Experimental infection of bulls with a genital isolate of bovine herpesvirus-4 and reactivation of latent virus with dexamethasone. 255 42

DNAs from eight Chlamydia psittaci isolates (koala conjunctivitis, avian psittacosis, avian ornithosis, ovine abortion, ovine polyarthritis, sporadic bovine encephalomyelitis, and feline conjunctivitis) and one Chlamydia trachomatis isolate (lymphogranuloma venereum) were compared by restriction endonuclease and DNA probe analyses. Digestion with HindIII yielded a series of discrete fragments which allowed the differentiation of most isolates. A gene probe, pFEN207, which encodes the chlamydia-specific component of the lipopolysaccharide group antigen was used in Southern hybridizations. The probe was chlamydia specific and hybridized to a single BamHI fragment and multiple HindIII fragments in each isolate. The variation in size of the hybridizing fragments allowed easy differentiation of the isolates and may eventually lead to a meaningful subgrouping of the diverse group of disease agents presently included in the species C. psittaci.
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PMID:Comparison of Chlamydia psittaci isolates by restriction endonuclease and DNA probe analyses. 282 36

Restriction endonuclease analysis was carried out on adenovirus types 3, 4, and 7 (Ad3, Ad4, and Ad7, respectively) isolated during a 16-month epidemic period. Most of the isolates were associated with respiratory or ocular infection or both. Forty-four strains of the subtype Ad7b were identified with SmaI; these strains could be further subdivided into three distinct genome groups, designated Ad7b1, Ad7b2, and Ad7b3, by digestion with PvuII, BglI, and SstII. These Ad7b variants occurred at approximately similar frequencies throughout the epidemic and were associated with similar clinical illnesses. Nine distinct intratypic genome groups were identified among 29 Ad3 strains with HindIII, PstI, and SmaI; adenoviruses similar to subtype Ad3a, formerly reported to be uncommon in Europe, were isolated most frequently (41% of strains), and the previously predominant prototype (Ad3p) was not found. Considerable similarities among the genomes of some strains of Ad3 and Ad7 could be demonstrated, and clinical and epidemiological presentations were very similar. The four strains of Ad4 isolated fell into two distinct patterns, i.e., the previously recognized prototype (Ad4p) and a new subtype designated Ad4b. Both of these subtypes were associated with follicular conjunctivitis. Thus we were unable to produce evidence that particular genome types of Ad3, Ad4, and Ad7 are associated with particular clinical presentations. However, restriction endonuclease analysis should prove useful for epidemiological studies on these viruses.
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PMID:Genetic heterogeneity of recent isolates of adenovirus types 3, 4, and 7. 301 31

Forty-one strains of adenovirus type 19/37 (Ad19/37) mainly isolated from patients with keratoconjunctivitis or conjunctivitis between 1974 and 1984 were re-evaluated by serum neutralization (SN), haemagglutination inhibition (HI) and DNA restriction analysis. Of 19 isolates which were neutralized to high titre by antiserum prepared against prototype Ad19, 5 showed cross-reactivity with 32-64 units of Ad37 antiserum, while of 22 strains neutralized by high titre by Ad37 antiserum, 3 showed cross-reactivity with 32 units of Ad19 antiserum. By DNA restriction analysis, all Ad19 isolates were identical to each other and to Ad19A virus. Using endonuclease Bgl 1, three variants were observed among the Ad37 isolates.
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PMID:Further characterization of 41 isolates of adenovirus types 19/37 by serum neutralization and DNA restriction enzyme analysis. 302 82

Plasmid DNA from an avian strain of Chlamydia psittaci was purified and estimated to be 7.9 kb in size using restriction endonuclease analysis. A 5.9 kb fragment of this plasmid was cloned, mapped and used to screen a range of chlamydial strains. Hybridizing DNA was absent from ovine abortion and arthritis isolates and also from the Cal 10 strain but related sequences were detected in C. psittaci strains of feline pneumonitis, guinea-pig inclusion conjunctivitis, ovine conjunctivitis and C. trachomatis serovar L2. The plasmid DNA from the feline strain was shown to have a distinct restriction endonuclease profile. Similar plasmid sequences were detected in all avian isolates tested: thus the clone may have a useful diagnostic role for the detection of the pathogen in its natural host and in zoonotic episodes.
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PMID:Distribution of plasmid sequences in avian and mammalian strains of Chlamydia psittaci. 318 16

Brazilian purpuric fever (BPF) is a recently recognized fulminant pediatric disease characterized by fever, with rapid progression to purpura, hypotensive shock, and death. BPF is usually preceded by purulent conjunctivitis that has resolved before the onset of fever. Both the conjunctivitis and BPF are caused by Haemophilus influenzae biogroup aegyptius (formerly called H. aegyptius). Isolates from 15 BPF cases, mainly from blood or hemorrhagic cerebrospinal fluid, case-associated isolates from 42 persons in towns where BPF cases occurred, and control strains from 32 persons in towns without BPF cases were characterized biochemically, genetically, and epidemiologically. Results indicated that a single clone was responsible for all BPF cases identified in six Brazilian towns from 1984 through 1986. All of 15 (100%) case strains were the same clone as was 1 of 32 (3%) control strains (P = less than 10(-8). Isolates of the clone were preferentially intrarelated by DNA hybridization (99% relatedness, hydroxyapatite method at 60 and 75 degrees C) and were separable from other H. influenzae biogroup aegyptius strains (approximately 90% relatedness at 60 degrees C and 82% relatedness at 75 degrees C). All isolates of the BPF clone and no other strains contained a 24-megadalton plasmid of restriction endonuclease type 3031, were of a single multilocus enzyme mobility type, were of a single sodium dodecyl sulfate-polyacrylamide gel electrophoresis type, and were in one of two ribosomal DNA restriction patterns. All BPF clone isolates reacted with monoclonal antibodies produced from a case strain; only 3 of 62 (5%) other strains reacted with this monoclonal antibody. Ninety percent of BPF clone strains and 27% of other strains were relatively resistant to sulfamethoxazole-trimethoprim.
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PMID:Biochemical, genetic, and epidemiologic characterization of Haemophilus influenzae biogroup aegyptius (Haemophilus aegyptius) strains associated with Brazilian purpuric fever. 326 23

One-hundred fifteen strain of Yersinia enterocolitica were examined for plasmids and plasmid-mediated pathogenic properties. Human strains of serotypes O:3 and O:9 harbored plasmids of 46 and 44 megadaltons, respectively, with 90% homology of DNA sequences. The plasmid-mediated properties were calcium dependence, survival in human serum, conjunctivitis provocation in guinea pigs, and O agglutinogens. One strains of serotype O:8 harbored a 42-megadalton plasmid with 75% sequence homology with plasmids of serotypes O:3 and O:9. An additional plasmid-mediated property was lethality for white mice. Filter hybridization of restriction endonuclease-digested plasmid DNA indicated that a 5.6-megadalton fragment of the plasmid of serotype O:8 had virtually no sequence homology with plasmid DNA of serotypes O:3 and O:9 and therefore may be associated with the lethal factor for mice.
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PMID:Plasmids of human strains of Yersinia enterocolitica: molecular relatedness and possible importance for pathogenesis. 682 45


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