Detection of Epstein-Barr virus RNA and related antigens in non-neoplastic lymphoid lesions.
To elucidate the latent state and reactivation of Epstein-Barr virus (EBV) in non-neoplastic lymphoid lesions, we investigated 144 non-neoplastic lymphoid lesions by in situ hybridization (ISH) to detect the expression of EBV-encoded small RNAs (EBER)-1 and BCRF-1 and by immunostaining for latent membrane protein (LMP)-1 and ZEBRA. ISH for EBER-1 detected EBER-1-positive cells (EPC) in 31 of the 144 examined lesions (22%). EPC were detected in 4 of 49 cases of nonspecific lymphoid hyperplasia, in 16 of 20 abscess-forming granulomatous lymphadenitis (AFGL), 5 of 25 Kikuchi's disease, and in 3 of 3 infectious mononucleosis. LMP-1 was expressed in 6 of 124 non-neoplastic lymphoid lesions (4.8%). LMP-1-positive cells were observed in 6 of the 31 EBER-1-positive cases (19%). EPC were detected significantly more frequently in LMP-1- and ZEBRA-positive specimens than in the LMP-1- and ZEBRA-negative specimens. BCRF-1 was expressed in 4 of 11 cases examined: 2 of 3 AFGL, 1 of 2 Kikuchi's disease, and in the 1 case of atypical lymphoid hyperplasia. This study suggests that Epstein-Barr virus is prevalent and can be reactivated in the lymph nodes effaced by destructive inflammation, such as AFGL. Such inflammation may provide a local milieu that is conducive for EBV to enter the lytic cycle.
Tonoyama
Y
Y
Department of Pathology, Okayama University Medical School, Japan.
Teramoto
N
N
Sarker
A B
AB
Yoshino
T
T
Hayashi
K
K
Takahashi
K
K
Akagi
T
T
D001483:Base Sequence; D004268:DNA-Binding Proteins / Q000378:metabolism*; D015967:Gene Expression Regulation, Viral; D004854:Herpesvirus 4, Human / Q000235:genetics*; D006801:Humans; D017403:In Situ Hybridization; D016753:Interleukin-10; D008206:Lymphatic Diseases / Q000382:microbiology*; D008969:Molecular Sequence Data; D015345:Oligonucleotide Probes / Q000737:chemistry; D012367:RNA, Viral / Q000378:metabolism*; D015534:Trans-Activators / Q000378:metabolism*; D014763:Viral Matrix Proteins / Q000378:metabolism; D014764:Viral Proteins / Q000378:metabolism*; D017735:Virus Latency
C066460:BCRF1 protein, Human herpesvirus 4; C063676:BZLF1 protein, Herpesvirus 4, Human; D004268:DNA-Binding Proteins; C037662:EBV-associated membrane antigen, Epstein-Barr virus; C099537:Epstein-Barr virus encoded RNA 1; D015345:Oligonucleotide Probes; D012367:RNA, Viral; D015534:Trans-Activators; D014763:Viral Matrix Proteins; D014764:Viral Proteins; D016753:Interleukin-10