Study on the prevalence of human papillomavirus infection and distribution of types in Shenyang city / 中华流行病学杂志

<p><b>OBJECTIVE</b>To study the status of infection and type-specific distribution on human papillomavirus (HPV) in the urban areas of Shenyang city, China and to provide data for vaccine introduction.</p><p><b>METHODS</b>A list of 1000 women aged 15-59 years were obtained randomly from the local population, and a questionnairey was filled in. Samples of cervical cell were obtained from 702 women who had had sexual experience and were not pregnant during the study was carried on. HPV type was detected using a GP5+/6+ -based PCR, liquid-based cytology, VIA, VILI and electronic coloscopy were used for screening on cervical cancer.</p><p><b>RESULTS</b>The prevalence of any HPV type was 17.0% among the 702 women who had been enrolled in this study, 64.1% in women with abnormal cytology, 11.1% in women with normal cytology and the difference was significant. The prevalence of high-risk HPV type was 11.9% and the low-risk type was 6.5%. The prevalence of either high-risk or low-risk HPV type was significantly higher in women with abnormal cytology than those with normal cytology. There were a total number of 32 HPV types identified and the most common HPV types were 16 (3.4%), 52 (2.4%) and 58 (1.9%). The prevalence rates of either high-risk or low-risk HPV type were not statistically different among different age-groups with P>0.05. HPV types with high risk were predominantly distributed in the groups below 45 years old and the difference was significant with P < 0.05. There was no significant difference between high-risk and low-risk types above 45 years old.</p><p><b>CONCLUSION</b>The prevalence of HPV in women with abnormal cytology was statistically higher than those with normal cytology. The most common HPV types in this population were 16, 52 and 58, and the validity of present vaccines was not good enough for cervical cancer prevention in this local area.</p>

Clinical evaluation of the xMAP technology in detection of high-risk human papillomavirus / 中国医学科学院学报

<p><b>OBJECTIVE</b>To evaluate the clinical application value of flexible multi-analyte profiling (xMAP) technology in detecting high-risk human papillomavirus (HR-HPV).</p><p><b>METHODS</b>Totally 1 061 women, aged 21-65 years, were randomly enrolled into the study. Cervical exfoliated cells were used in xMAP technology and hybrid capture II (hc2). Pathological diagnosis was used as golden standard. Consistency of these two methods was assessed.</p><p><b>RESULTS</b>The sensitivity and specificity of xMAP technology were 80.31% and 85.83%, respectively. The positive and negative predictive values were 44.5% and 96.9%, respectively. The Kappa value for consistency between xMAP technology and hc2 was 0.58.</p><p><b>CONCLUSIONS</b>The specificity of xMAP technology is similar to hc2 test, but the sensitivity is inferior to hc2. However, these two methods show good consistency in the detection of HR-HPV.</p>