start-ver=1.4 cd-journal=joma no-vol= cd-vols= no-issue= article-no= start-page= end-page= dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=20070323 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=EBウイルス関連皮膚疾患における痂皮を用いた非侵襲的EBウイルス潜伏感染細胞の証明 kn-title=A novel, noninvasive diagnostic probe for hydroa vacciniforme and related disorders Detection of latency-associated Epstein-Barr virus transcripts in the crusts en-subtitle= kn-subtitle= en-abstract= kn-abstract=OBJECTIVE: To establish a new diagnostic method for Epstein-Barr virus (EBV)-associated cutaneous disorders. DESIGN: Skin biopsy is usually required to confirm the latent EBV infections in cutaneous lesions of EBV-associated NK/T-cell lymphoproliferative disorders, including hydroa vacciniforme (HV) and hypersensitivity to mosquito bites (HMB). We have devised a novel, noninvasive method to detect EBV-encoded small RNA (EBER), BamHI A rightward transcripts (BARTs) in the skin crusts and scales of such patients. PATIENTS: Six patients with EBV-associated cutaneous lesions were enrolled in the present study, including three patients with HV, one with HV-like eruptions and chronic active EBV infection, and two with EBV-associated cutaneous lymphoma. MAIN OUTCOME MEASURES: RNA was extracted from the crusts obtained from the cutaneous lesions by forceps, converted to cDNA, and processed for polymerase chain reaction (PCR) amplification with a specific set of primers. The PCR products were assayed by a DNA sequencer. RESULTS: Intact RNAs were successfully extracted from the crusts as well as control materials. EBER1 and BARTs RNAs were detected in all 7 crusts, and in 6 of 7 crusts of EBV-associated cutaneous diseases, respectively. One of 23 crusts from non EBV-associated diseases was positive for EBER1 RNA. The sensitivity and specificity of our assay for latent EBV infection were 100% and 95.8% for EBER1 RNA, and 85.7% and 100% for BARTs mRNA, respectively. The correct DNA sequence for EBER1 and BARTs was confirmed in the PCR products by a direct sequencing method. CONCLUSIONS: Our procedure may be of use as a biomarker for EBV-associated cutaneous lesions, including HV, HMB, and NK/T-cell lymphomas. en-copyright= kn-copyright= en-aut-name=YamamotoTakenobu en-aut-sei=Yamamoto en-aut-mei=Takenobu kn-aut-name=山本剛伸 kn-aut-sei=山本 kn-aut-mei=剛伸 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 en-keyword=EB virus kn-keyword=EB virus en-keyword=Hydroa vacciniforme kn-keyword=Hydroa vacciniforme en-keyword=Noninvasive kn-keyword=Noninvasive en-keyword=EBER kn-keyword=EBER en-keyword=Crust kn-keyword=Crust END