Molecular epidemiology of Kaposi�s sarcoma-associated herpes virus, and risk factors in HIV-infected patients in Tehran, 2014 (original) (raw)
Related papers
Iranian Red Crescent Medical Journal, 2016
Background: Kaposi's sarcoma (KS) remains the most common malignancy among HIV-infected patients. Human herpesvirus type-8 (HHV-8) is regarded as the infectious etiological agent of Kaposi's sarcoma (KSHV). Diagnostic procedures associated with KSHV are not routinely performed in HIV-infected subjects. Objectives: The main objective of this study is to obtain information on KSHV epidemiology in Iranian HIV-infected individuals. Patients and Methods: In the present cross-sectional study, 109 patients with established HIV infection, who visited a governmental and referral center for HIV screening in Tehran (Tehran west health center (TWHC)) between May 2014 and July 2015 were enrolled according to the convenience sample strategy. After peripheral blood collection, isolation of plasma and peripheral blood mononuclear cell (PBMC) compartments, DNA extraction was performed. KSHV DNA was analyzed by nested polymerase chain reaction (nested PCR) using primers from ORF-26 (virus minor capsid). Results: Among all 109 HIV-infected patients, 67 (61.5%) were male, with an age range of 2-64 years (mean ± standard deviation 35.8 ± 13.3). KSHV DNA was found in PBMC and plasma samples of six (5.5%) and four (3.6%) patients, respectively. Conclusions: This study revealed a considerable prevalence of KSHV DNA, during latent and lytic phases, among HIV-infected patients. Risk factors for KSHV infection acquisition and concurrent. 0+infection with HIV were also evaluated. Diagnosis of KSHV in the group could be helpful for prognosis of Kaposi's sarcoma and clinical management.
Journal of Techniques, 2023
Kaposi's sarcoma (KS) represents the most prevalent malignancy among untreated HIV-positive individuals. Herpesvirus linked with Kaposi's sarcoma (KSHV; also termed as human herpesvirus 8 (HHV8)). In this study, blood samples were collected from 120 individuals, 60 of them had HHV-8 infection with kaposi sarcoma and 60 persons as apparently healthy control. These patients attended Baghdad Teaching Hospital from the period of 15th February 2021 to 15th January 2022. Infections are seen to be more prevalent in the age group of 25-49 years when compared to other groups. The distribution of the biomarkers confirmed that 50, 25 and 80% of the 20 infected patients were positive for Ca19.9, Ca125 and Ca15.3 respectively. The Ca19.9, Ca125, and Ca15.3 biomarkers all produced good results in patients with Human Herpes Virus 8 (HHV-8) infections, leading us to the conclusion that these biomarkers gave favorable results. All of the PCR products showed a positive amplification at 434bp. Phylogenetic analysis confirmed the belongingness to the HHV strain. Further, this could lead to the development of a novel molecular diagnostic tool.
Global Dermatology, 2016
Introduction: Epidemic AIDS-associated Kaposi´s sarcoma (KS) is the most aggressive form of this neoplasm and is strongly associated with the reactivation of human herpesvirus type 8 (HHV-8), particularly among men who have sex with men. Objectives: To evaluate the presence of HHV-8 DNA in the biopsy smears of 31 patients with different clinical forms of AIDS-associated KS. Materials and methods: Epidemiologic, clinic, immunologic and virologic characteristics of 31 HIV infected patients with KS were included in this descriptively and retrospectively analysis from 2010 to 2013. KS was classified in four clinical forms including only cutaneous lesions, only mucosal involvement, mucocutaneous compromise and disseminated disease. The detection of DNA HHV-8 was performed by polymerase chain reaction (PCR) in all biopsy smears by tissue disruption to perform the DNA extraction, DNA purification by spectrophotometry analysis and DNA amplification with specific oligonucleated primers. Results: Thirty patients were male, the median of age was 34 years and the most frequent risk factor for HIV infection was unprotected sexual contact (90%). The median of time between HIV infections to neoplasm diagnosis was 6 years. In 11 patients (35%) KS was the first defining illness. The median of CD4 T cell count at the time of neoplasm diagnosis was 39 cell/μL. The majority of patients (84%) were not receiving highly active antiretroviral therapy (HAART). Clinical forms includes 12 patients with cutaneous KS, 8 patients with mucosal KS, 7 patients with disseminated disease and 4 patients with mucocutaneous involvement. PCR HHV-8 was positive in 24 (77%) biopsy smears. When we analyzed this group the median of age was 34 years, the median of time between HIV infection to neoplasm diagnosis was 9 years, the median the median of CD4 T cell count was 39 cell/μL and only 5 patients were receiving HAART at the time of diagnosis. No significant difference was observed between the HHV-8 positive and negative probable due to the small size of the cohort. Conclusion: Although HHV-8 DNA was detected in a high number of patients in these series, it is possible that other mechanisms may be involved in the pathogenesis of AIDS-associated KS.
Journal of Reproductive Immunology, 1998
Kaposi's sarcoma (KS) is a form of skin cancer, most commonly found in individuals suffering from acquired immunodeficiency syndrome, or AIDS. However, before the worldwide infection of human immunodeficiency virus (HIV), the rare occurrence of KS was confined to two distinct groups of individuals. In the Western world, the classical form of KS was often found in older men (60-70 years of age) from the Mediterranean area. Another form called endemic KS, was found in Equatorial Africa. Currently, the most common cases of KS are found in individuals suffering from AIDS. This is called AIDS-associated KS. Between 30 and 40% of male, homosexual AIDS patients suffer from AIDS-associated KS. KS is also occasionally diagnosed in transplant patients receiving immunosuppressive drugs (to keep their body from rejecting the foreign organ). As opposed to cases of classic and endemic KS, the KS in AIDS patients progresses very quickly, often with a fatal outcome. Human herpesvirus type 8 (HHV-8) has been implicated as the cause of Kaposi's sarcoma (KS), but the exact connection of the virus to the neoplasm is not known. The virus has been detected within the sarcoma skin lesions, but has additionally been seen in peripheral blood
Herpesviridae, 2010
In Cuba, previous reports have shown an increase of epidemic KS, reaching a total of 120 cases by the end of 2007, despite the use of HAART. To evaluate and compare the role of human herpes virus 8 (HHV-8) viral loads in different compartments of AIDS-related Kaposi's sarcoma (AIDS-KS) patients real-time polymerase chain reaction (RT-PCR) was used to determine the genome copy number of HHV-8 in plasma, saliva, tissue and peripheral blood mononuclear cells (PBMC) of 49 AIDS-KS patients. Overall, 98% of AIDS-KS patients harbored detectable HHV-8. HHV-8 could be detected in 91.6% of KS tissue lesions showing the highest viral load (median log = 3.14 copies/100 ng DNA) followed by saliva and PBMC which were positive in 78%, and 69.2%; respectively. In contrast, HHV-8 was detected in only 37% of plasma samples, which also showed lower viral loads. Men who had sex with men (MSM) were more likely to have three-times higher HHV-8 genome copies in KS lesions when compared with tissues from heterosexuals individuals (OR 3; 95% CI 1.1 to 12.5). These results emphasize the systemic nature of HHV-8-infection and demonstrate the possible role of saliva in HHV-8 transmission among MSM.
FEMS Immunology & Medical Microbiology, 2005
Human herpesvirus-8 (HHV-8) infection of 130 Hungarian HIV-positive individuals with or without KaposiÕs sarcoma was investigated from 158 serum and 122 peripheral blood samples using anti-latency-associated nuclear antigen (LANA) indirect immunofluorescence assay (IFA), recombinant orf65 and orfK8.1 antigen enzyme-linked immunosorbent assays (ELISAs), Western blot assays and orf26 specific nested polymerase chain reaction (PCR). The overall prevalence of HHV-8 infection was found to be 31.5% (41/130) among the Hungarian HIV-positive patients. This seroprevalence rate is 7-11-fold higher than that of healthy HIVnegative blood donors in Hungary. The highest prevalence of HHV-8 infection (36.1%, 35/97) was observed in homo-or bisexual patients. Similar to the serologic results, HHV-8 DNA was not always detectable in all serial samples previously shown to be positive for HHV-8 DNA.
Journal of Clinical Microbiology, 2005
Africa. In a series of 36 AIDS-KS cases from Central African Republic, we showed, using a real-time PCR quantitative assay, the high frequency (82%) of detectable HHV-8 DNA in peripheral blood mononuclear cells (PBMCs). We also found that the level of antibodies directed against lytic or latent HHV-8 antigens is not correlated to the amount of HHV-8 viral load in the PBMCs, and finally, we demonstrated a much higher viral load in tumoral skin lesions (6.07 log copies/g DNA) than in unaffected skin (2.93 log copies/g DNA) or in PBMCs (2.55 log copies/g DNA).
Cancer, 1996
BACKGROUND. The evidence of an infectious agent other than human immunodeficiency virus (HIV) acting as a possible etiologic cause of Kaposi's sarcoma (KS) has received considerable attention in the last years. Recently, DNA sequences from a new herpesvirus (HHV-8) have been observed in several cases of KS. The discovery suggests that this virus may play a role in the pathogenesis of KS. To evaluate these results, we determined the frequency of HHV-8 DNA sequences in 78 specimens of KS according to different epidemiologic origins (sporadic KS: 6, immunosuppressive drug-associated: 11, and AIDS-associated: 61), clinical forms (cutaneous: 69, mucocutaneous: 4 and visceral: 5) and histologic variants (earlypatch: 40, late-plaque or nodular: 38).
Journal of Medical Virology, 2003
We report the molecular characterization of 38 new Kaposi's sarcoma-associated herpesvirus (KSHV) strains from Russian patients with either classic (25 cases), epidemic/AIDS-associated (7 cases), or posttransplant/immunosuppressed patients (6 cases), or Kaposi's sarcoma (KS). While a complete sequence of the K1 gene (870 bp) was obtained from 30 strains, only partial sequences of the hypervariable regions VR1 (372 bp) and/or VR2 (381 bp) of the K1 gene were obtained from eight strains of KS paraffin blocks. Sequence comparison and phylogenetic studies indicate that the novel KSHV strains belong to either the A subtype (28 cases) or the C subtype (10 cases). Within the 28 strains of A subtype, 24 (86%) belong to the large A 0 subgroup, mostly A1 and A1 0 clades, and 4 belong to the A 00 subgroup, mostly A3 clade. Within the 10 strains of subtype C, 4 were of C 0 subgroup, and 6 of the C 00 . Some molecular variants of subtype A 0 were observed, with 3 strains exhibiting an insertion of a single amino acid at the position 65 and 2 strains (both from AIDS-KS) with an unique deletion of 17 amino acids in the VR2 region. Polymerase chain reaction-based subtyping of the K14.1 genomic region indicated that most (23/32) of the novel strains belonged to the P subtype. The results indicate that despite a wide genetic diversity of A and C K1 subtypes of KSHV strains present in Russia, most are closely related and belong to the A1 or A1 0 molecular clades suggesting a common origin. This study also expands the data regarding the absence of any correlation between a K1 molecular subtype and a specific KS type (classic, epidemic, or posttransplant), as well as between the K1 and K14.1 molecular subtypes.
Journal of Infectious Diseases, 1997
Polymerase chain reaction (PCR) was used to examine human herpesvirus 8 (HHV-8) DNA from Kaposi's sarcoma (KS) lesions, normal skin, and peripheral blood mononuclear cells (PBMC) from human immunodeficiency virus (HIV) -infected patients who did or did not have KS. Of 9 KS biopsies, 8 were positive for five HHV-8 open-reading frames and ranged from 1 viral genome per 2.5 -12.7 cells. Two putative replicative gene RNAs were detected by reverse transcription -PCR at low levels in 1 KS lesion. HHV-8 DNA was detected in 4 of 8 PBMC samples from patients with KS and in 2 of 18 PBMC samples from patients without KS. Sera were tested for reactivity with BCBL-1 cells (HHV-8 positive): High immunofluorescence antibody titers against HHV-8 lytic and latent antigens were detected in samples from KS-positive patients, and ú20 polypeptides from induced BCBL-1 cells were recognized. Sera from 6 of 18 patients without KS showed low levels of antibodies against HHV-8 lytic and latent antigens.