HPV test by Hybrid Capture II for the diagnosis of HR-HPV persistent infection

DNA Biosensor Based on Double-Layer Discharge for the Detection of HPV Type 16

DNA electrochemical biosensors represent a feasible alternative for the diagnosis of different pathologies. In this work, the development of an electrochemical method for Human Papillomavirus-16 (HPV-16) sensing is reported based on potential relaxation measurements related to the discharge of a complex double layer of a DNA-modified gold electrode. The method used allows us to propose an equivalent circuit (EC) for a DNA/Au electrode, which was corroborated by electrochemical impedance spectroscopy (EIS) measurement. This model differs from the Randles circuit that is commonly used in double-layer simulations. The change in the potential relaxation and associated charge transfer resistance were used for sensing the DNA hybridization by using the redox pair Fe(CN)₆^4-/Fe(CN)₆³⁺ as an electrochemical indicator. In order to determinate only the potential relaxation of the composed double layer, the faradic and double-layer current contributions were separated using a rectifier diode arrangement. A detection limit of 0.38 nM was obtained for the target HPV-16 DNA sequences. The biosensor showed a qualitative discrimination between a single-base mismatched sequence and the fully complementary HPV-16 DNA target. The results indicate that the discharge of the double-layer detection method can be used to develop an HPV DNA biosensor.

Survey of cervical cancer and precancerous lesion prevention knowledge within community health service centers in Shanghai, China

To study deficiencies in knowledge of the general public health-care professionals in community health service centers regarding the prevention of cervical intraepithelial neoplasia and cervical cancer. In addition, this study examined the key content of training required for primary health-care personnel to prevent cervical precancerous lesion and cervical cancer.A questionnaire was distributed among 172 medical staff personnel (the ratio of general practitioners and nurses was 1:1 in five community health service centers in Shanghai, China. This questionnaire assessed four knowledge areas of cervical cancer prevention using 10 single-choice questions.Out the 172 questionnaires distributed, 105 (61.05%) were completed correctly. No statistically significant difference in the percentage of complete correct answers among the five community health service centers was seen (P = .06). Additionally, there was no significant difference in the percentage of correct answers among the three age groups surveyed: age ≤35 years, 36-45 years, and ≥46 years (P = .12). We did find a statistically significant difference in the percentage of correct answers between general practitioners and nurses (P = .01) and between staff with master's degrees, bachelor's degrees, and associate's degrees (P = .03).General practitioners and nurses in community health service centers in Shanghai require additional education on the secondary prevention of cervical intraepithelial neoplasia and cervical cancer. The health knowledge related to human papillomavirus also needs to improve. Nurses and medical staff with lower degrees have insufficient awareness of the prevention of precancerous lesions of the cervix and cervical cancer; these two groups should be prioritized for additional training.