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Titolo:
DETECTION OF COLORADO TICK FEVER VIRUS BY USING REVERSE-TRANSCRIPTASEPCR AND APPLICATION OF THE TECHNIQUE IN LABORATORY DIAGNOSIS
Autore:
JOHNSON AJ; KARABATSOS N; LANCIOTTI RS;
Indirizzi:
CTR DIS CONTROL & PREVENT,DIV VECTOR BORNE INFECT DIS,NATL CTR INFECTDIS,PUBL HLTH SERV FT COLLINS CO 80522
Titolo Testata:
Journal of clinical microbiology
fascicolo: 5, volume: 35, anno: 1997,
pagine: 1203 - 1208
SICI:
0095-1137(1997)35:5<1203:DOCTFV>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
POLYMERASE CHAIN-REACTION; BLUETONGUE VIRUS; CLINICAL-SAMPLES; AMPLIFICATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
23
Recensione:
Indirizzi per estratti:
Citazione:
A.J. Johnson et al., "DETECTION OF COLORADO TICK FEVER VIRUS BY USING REVERSE-TRANSCRIPTASEPCR AND APPLICATION OF THE TECHNIQUE IN LABORATORY DIAGNOSIS", Journal of clinical microbiology, 35(5), 1997, pp. 1203-1208

Abstract

Colorado tick fever (CTF) virus elicits an acute illness in humans, producing nonspecific flu-like symptoms and a biphasic fever in approximately 50% of patients, The disease is transmitted by the adult Rocky Mountain wood tick (Dermacentor andersoni), and therefore incidence islimited by the habitat and life cycle of that vector. The early symptoms of infection are difficult to distinguish from those of several other agents, especially Rickettsia rickettsii, Serologic testing is usually unable to provide evidence of CTF viral infection during the acute phase because of the late appearance of the various antibodies. Herewe report the development and clinical application of a test to diagnose this disease during the acute stages. Oligonucleotide primers to the S2 segment of CTF (Florio) virus were made, and these were used in the amplification of a 528-bp fragment of DNA, transcribed from the double-stranded CTF virus RNA template by reverse transcriptase PCR. RNAs processed from 16 CTF virus isolates yielded similar results when analyzed on agarose gels. These were distinguishable from their antigenic relatives Eyach, S6-14-03, and T5-2092 and from other coltiviruses and an orbivirus but not from the antigenically distinct CTF virus-related isolate 720896. A mouse model demonstrated the utility of this method with whole-blood specimens, and CTF virus was successfully detected in human sera from the initial day of the onset of symptoms to 8 days later, The reverse transcriptase PCR method is a promising tool for the early diagnosis of CTF viral infection, or for ruling out CTF virus as the etiologic agent, in order to facilitate appropriate medical support.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/09/20 alle ore 16:04:49