Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.1.30.2 (endonuclease)
 18,621 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We analyzed the differentiation of two strains isolated from the conjunctiva and rhinorrhea of a patient with herpetic keratitis by the restriction endonuclease digestion method of herpes simplex virus (HSV) DNA. As a result two strains were identified as the same one. This result suggests that HSV contained in tears flows into the nasal cavity via the lacrimal canaliculi.
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PMID:Transmission of herpes simplex virus infection via lacrimal canaliculi. 131 37

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 37-year old AIDS patient presented with foreign body sensation. Microsporidia were detected in smears from a conjunctival swab and urine sediment stained with calcofluor and a modified trichrome blue stain and by indirect fluorescent-antibody staining with murine polyclonal antiserum raised against Encephalitozoon hellem. This antiserum cross-reacted with other Encephalitozoon species, so PCR was performed to amplify the microsporidian ribosomal DNA (rDNA) with pan-Encephalitozoon primers. The PCR DNA products from the urine and conjunctival clinical specimens, along with the tissue culture-derived microsporidian controls, were assayed by Southern analysis with oligonucleotide probes specific for Encephalitozoon cuniculi, E. hellem, and Encephalitozoon (Septata) intestinalis. The PCR product amplified from the urine specimen hybridized with the E. hellem probe only, while insufficient DNA was amplified from the conjunctiva specimen for detection by Southern analysis. For corroboration of the PCR-Southern analysis results, aliquots of the urine and conjunctiva specimens were seeded onto RK-13 cell monolayers. The rDNA extracts of the cultured microsporidia were amplified by PCR with pan-Encephalitozoon primers, and the PCR DNA products were subjected to digestion with restriction endonuclease FokI. The amplified rDNA of both the urine and conjunctiva isolates generated digestion patterns that were identified to the E. hellem PCR rDNA digestion pattern. In addition, double-stranded heteroduplex mobility shift analysis with these PCR products indicated that the urine and conjunctiva isolates were identical to each other and to E. hellem. The patient was treated with albendazole and topical fumagillin and responded rapidly, with no recurrence of ophthalmologic signs. The results of this study demonstrate that PCR-Southern analysis provides a basis for distinguishing E. cuniculi, E. hellem, and E. intestinalis in clinical specimens.
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PMID:Diagnosis of disseminated microsporidian Encephalitozoon hellem infection by PCR-Southern analysis and successful treatment with albendazole and fumagillin. 881 14