Recombinant Human Papilloma Virus type 6 L1 protein (VLP) (DAGF-227)

Human Papilloma Virus type 6 L1 protein (VLP), recombinant protein from E. coli

Molecular Weight
50 kDa
Alternative Names
HPV 6 L1; L1; Major capsid protein L1
> 95%(SDS-PAGE)
Batch dependent - please inquire should you have specific requirements.
500 mM Histidine 100mM NaCl 0.02%Tween80(pH6.0)
Store at -70°C, avoid repeat freeze/thaw cycles
Antigen Description
Human papillomavirus (HPV) is a DNA virus from the papillomavirus family that is capable of infecting humans. Like all papillomaviruses, HPVs establish productive infections only in keratinocytes of the skin or mucous membranes. L1 is a major capsid protein of human papilloma virus. Infection with specific types of HPV has been associated with an increased risk of developing cervical neoplasia. Does not bind DNA.
HPV 6 L1; L1; Major capsid protein L1


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Prevalence and factors associated with Trichomonas vaginalis infection in indigenous Brazilian women


Authors: Barbosa, Marcelo dos Santos; Andrade de Souza, Iara Beatriz; Schnaufer, Erica Cristina dos Santos; da Silva, Liliane Ferreira; Maymone Goncalves, Crhistinne Carvalho; Simionatto, Simone; Marchioro, Silvana Beutinger

There is a scarcity of studies on the prevalence ofTrichomonas vaginalis(TV) in indigenous populations of Brazil. We conducted a cross-sectional study between January and December 2018, on indigenous women living nearby an urban center of the Midwest region of Brazil and determined the prevalence of TV. Factors associated with TV infection and a comparison of molecular and direct microscopy diagnoses were determined. 241 indigenous women aged above 18 years participated in the study. Cervical and vaginal brush samples were collected to diagnose TV through polymerase chain reaction (PCR). Direct microscopy for detection of TV, and cellular changes was performed. A sociodemographic and behavioral questionnaire was applied at the beginning of the study. All the data were analyzed using Statistical Package for the Social Sciences. The result obtained showed that 27.8% [95% CI: 22.2-33.9] were positive for TV on PCR, while 7.41% [95% CI: 4.1-11] showed positive on direct microscopy. Direct microcopy also found 21 (8.71%) and 8 (3.31%) women infected with Gardnerella vaginalisand Candida albicans, respectively. In addition, 10 women presented atypical squamous cells of unknown significance and 14 lesions suggestive of HPV. Single women, under the age of 30 and who do not use condoms, were found to have a greater chance of getting TV infection. The high prevalence TV found in this population is comparable to highly vulnerable populations, as prisoners, sex workers and women in regions with low socioeconomic levels, moreover, seems to be an underdiagnosis of this infection. Therefore, a routine test program, as well as a review of the diagnostic method used, is encouraged for proper management.

High-risk human papilloma virus was not detected in a Norwegian cohort of oral squamous cell carcinoma of the mobile tongue


Authors: Soland, Tine M.; Bjerkli, Inger-Heidi; Georgsen, Jeanette B.; Schreurs, Olaf; Jebsen, Peter; Laurvik, Helene; Sapkota, Dipak

Objectives The presence of and the causative role of high-risk human papilloma virus (HPV) is a subject of controversy in oral squamous cell carcinoma (OSCC). The disagreement can be related to the misclassification of OSCC as oropharyngeal squamous cell carcinoma and/or lack of standard detection methods. This study aimed to examine the presence of transcriptionally active high-risk HPV in a homogenous Norwegian cohort of primary and second primary OSCC of the mobile tongue (oral tongue squamous cell carcinoma-OTSCC). Methods Tissue microarrays containing formalin-fixed and paraffin-embedded cores of 146 OTSCC from the anterior 2/3 of the tongue (n = 128 primary and n = 18 second primary) from a multicentric Norwegian cohort were examined for the presence of high-risk HPV by DNA- and RNA-in situ hybridization (ISH) assays and p16 immunohistochemistry. Results Transcriptionally active HPV (E6/E7 mRNA) was not identified in any of the OTSCC specimens. In parallel, no tumors were positive for HPV by DNA ISH. Although, 61 (42%) OTSCC demonstrated p16 positivity with varying staining intensity and subcellular localization, only two cases demonstrated strong and uniform p16-staining (both cytoplasmic and nuclear) in >70% of cancer cells. The absence of transcriptionally active high-risk HPV in this cohort of OTSCC indicates that high-risk HPV is an unlikely causative factor in the present material.

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