Prevalence and distribution of cervical human papillomavirus genotypes in women with cytological results from Sichuan province, China
JOURNAL OF MEDICAL VIROLOGY
Authors: Li, Bei; Wang, Hui; Yang, Dan; Ma, Jian
The epidemiologic characteristics of human papillomavirus (HPV) genotypes vary by age, ethnicity, and geographic location, and the available data on HPV epidemiological characteristics with cytology results in Sichuan province are limited. Our research was conducted from June 2016 to July 2017. A total of 10 953 women getting HPV testing were enrolled. Liquid-based cytological and histological results were collected. The overall HPV infection rate was 24.1% in Sichuan province. The prevalence of high-risk HPV (hrHPV) was 19.9%. For hrHPV genotypes, HPV52 (15.5%) was the most prevalent genotype, followed by HPV16 (13.8%), HPV58 (13.3%), HPV51 (8.6%), HPV39 (8.1%), and HPV68 (7.8%). Among all HPV-positive women with a cytology or histology result, HPV16-positive women have the highest cervical intraepithelial neoplasia 1 (CIN1)+ prevalence (11.1%), followed by HPV18 and HPV33; HPV16-positive women also have the highest CIN2+ prevalence (9.3%), followed by HPV58 and HPV18. To date, this is the largest study done in the Sichuan province for HPV prevalence and subtype distribution with normal and abnormal cytological results. The age-specific prevalence in patients at gynecology clinics and other clinics is different. Besides, patients at the same age also have a different hrHPV prevalence and lrHPV prevalence. Our result revealed that in every 10 HPV16-positive women, there is approximately one women with CIN2, CIN3, or cervical cancer. A higher oncogenic potential of HPV58 than that of HPV52 was observed.
Diversity of human papillomavirus types in periungual squamous cell carcinoma
BRITISH JOURNAL OF DERMATOLOGY
Authors: Kreuter, A.; Gambichler, T.; Pfister, H.; Wieland, U.
P>Background There is accumulating evidence that infections with certain high-risk alpha-human papillomaviruses (HPVs) are involved in the pathogenesis of digital squamous cell carcinomas (SCCs) and their precursor lesions (SCCs in situ). Objectives This study was initiated to search for alpha- and beta-HPV infections in a collective of SCC and SCC in situ located on the hands. Methods HPV typing for 36 high-risk and low-risk alpha-HPV types and 25 beta-HPV types was performed in SCCs located at different sites of the hands. Additionally, immunohistochemical staining for p16INK4a and Ki67 was performed in 15 samples. Results In total, 25 SCCs/SCCs in situ (six periungual lesions, eight lesions from the proximal or lateral part of the finger, and 11 lesions from the dorsal part of the hand) were analysed for the presence of alpha- and beta-HPV types. Only one lesion (an SCC in situ positive for HPV11 and HPV31) of the dorsal hand and none of the proximal or lateral part finger lesions were alpha-HPV positive. In contrast, all six periungual lesions were alpha-HPV positive, and the majority (83%) of them carried HPV types other than HPV16 (HPV26, HPV33, HPV51, HPV56 and HPV73). beta-HPV types were found in only two biopsies. p16INK4a and Ki67 expression was significantly higher in HPV-positive lesions as compared with HPV-negative tumours, and both markers significantly correlated with each other. Conclusions In contrast to other locations of the hands, periungual SCCs are frequently associated with alpha-HPV infections. Several high-risk HPV types other than HPV16 can induce periungual SCCs. Given the high recurrence rate and high proliferative activity of HPV-associated periungual SCCs, aggressive treatment and close follow-up of these tumours is mandatory.