BACKGROUND The high prevalence of human papillomavirus(HPV)infection in oropharyngeal squamous cell carcinoma(SCC)is well established,and p16 expression is a strong predictor.HPV-related tumors exhibit unique mechanis...BACKGROUND The high prevalence of human papillomavirus(HPV)infection in oropharyngeal squamous cell carcinoma(SCC)is well established,and p16 expression is a strong predictor.HPV-related tumors exhibit unique mechanisms that target p16 and p53 proteins.However,research on HPV prevalence and the combined predictive value of p16 and p53 expression in head and neck cutaneous SCC(HNCSCC),particularly in Asian populations,remains limited.This retrospective study surveyed 62 patients with HNSCC(2011-2020),excluding those with facial warts or other skin cancer.AIM To explore the prevalence of HPV and the predictive value of p16 and p53 expression in HNCSCC in Asian populations.METHODS All patients underwent wide excision and biopsy.Immunohistochemical staining for HPV,p16,and p53 yielded positive and negative results.The relevance of each marker was investigated by categorizing the tumor locations into high-risk and middle-risk zones based on recurrence frequency.RESULTS Of the 62 patients,20(32.26%)were male,with an average age of 82.27 years(range 26-103 years).High-risk included 19 cases(30.65%),with the eyelid and lip being the most common sites(five cases,8.06%).Middle-risk included 43 cases(69.35%),with the cheek being the most common(29 cases,46.77%).The p16 expression was detected in 24 patients(38.71%),p53 expression in 42 patients(72.58%),and HPV in five patients(8.06%).No significant association was found between p16 expression and the presence of HPV(P>0.99),with a positive predictive value of 8.33%.CONCLUSION This study revealed that p16,a surrogate HPV marker in oropharyngeal SCC,is not reliable in HNCSCC,providing valuable insights for further research in Asian populations.展开更多
Human papillomaviruses(HPVs) are a large family of double strand DNA viruses comprising more than 180 types. Infection with HPV is very common and it is associated with benign and malignant proliferation of skin and s...Human papillomaviruses(HPVs) are a large family of double strand DNA viruses comprising more than 180 types. Infection with HPV is very common and it is associated with benign and malignant proliferation of skin and squamous mucosae. Many HPVs, considered lowrisk such as HPV 6 and 11, produce warts; while highrisk viruses, such as HPVs 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, and 58, induce tumors. About 5% of all cancers in men and women are associated with HPV infection. Because there are not antiviral drugs for HPV infection, current therapies for low-risk HPV infections involve physical removal of the lesion by cryotherapy, trichloracetic acid, laser, or surgical removal. Surgical procedures are effective in the treatment of precancerous lesions, however after these procedures, many recurrences appear due to new re-infections, or to failure of the procedure to eliminate the HPV. In addition, HPV can inhibit recognition of malignant cellsby the immune system, leading to the development of cancer lesions. When this occurs, radiotherapy and chemotherapy are then used. Unfortunately, about 50% of the HPV-cancer patients still die. In the past decade, a better knowledge of the natural history of the virushost interaction and of the immune response against this viral infection has brought new therapeutic strategies geared to modulate the immune system to generate an efficient virus-specific cytotoxic response. Novel HPV protein-expressing vaccines have shown some significant clinical efficacy and systemic HPV-specific cytotoxic T cell responses. This review will describe the current status of the several therapeutic strategies used to treat HPV-induced lesions, and discuss the various new therapies now being tested.展开更多
Objective To study the circulation, distribution, and genomic diversity of HPVs in common warts in Beijing area of China. Methods Forty eight patients with pathologically diagnosed common warts were screened for the p...Objective To study the circulation, distribution, and genomic diversity of HPVs in common warts in Beijing area of China. Methods Forty eight patients with pathologically diagnosed common warts were screened for the presence of HPV with HPV type-specific PCR and direct sequencing analysis. The genomic diversity of HPVs prevalent in Chinese patients was analyzed based on LCR. Results Forty one （85.5%） samples were positive for HPV DNA, 13（31.7%）-HPV-57, 12（29.3%）-HPV-la, 7（17%）-HPV-27 and 5（12.2%）-HPV-2a. Four cases were infected with two different HPV types, two （4.9%） with HPV-la and HPV-27, one （2.4%） with HPV-1 and HPV-57 and one （2.4%） with HPV-27 and HPV-57. In contrast to the prevalence of single strain of novel HPV-57 variant and HPV-1 prototype, two HPV-2 and three HPV-27 novel variants were found to circulate in Beijing. Conclusion HPV-1, -2, -27 and -57 are predominantly prevalent in patients with common warts in Beijing.展开更多
Background: Different studies have demonstrated high prevalence of HPV infection and dysplastic lesions of the cervix in immunocompromised patient such as women living with HIV. Is this high prevalence due to a greate...Background: Different studies have demonstrated high prevalence of HPV infection and dysplastic lesions of the cervix in immunocompromised patient such as women living with HIV. Is this high prevalence due to a greater susceptibility to HPV infection, which is known to be frequent in its latent form in women? Objective: This study aims to identify HPV genotypes in HIV+ and HIV−women to understand HPV molecular epidemiology in Senegal. Material and Method: Endocervical samples from 331 HIV+ and HIV−women, sexually active, were collected. The molecular identification of the 28 genotypes studied (19 HPV-HR and 9 HPV-LR) was carried out after DNA extraction, by multiplex PCR with the Anyplex™II HPV28 detection kit from Seegene on CFX96™Bio-Rad machine. The comparisons were made by calculating the p-value and odds ratio with R Studio software (version 4.1.0). The results were considered significant if p Results: The general prevalence of HPV was significantly higher in HIV+ women with 78.95% vs 64.65% for HPV;72.18% vs 57.07% for HPV-HR;57.14% vs 34.34% for HPV-BR (p −women. Conclusion: Our results showed that the prevalence of HPV, HPV-HR and HPV-BR was significantly higher in HIV+ women. Non-vaccine genotypes were among the most found genotypes. Groups of HIV+ women aged between 35 and 50, married and using contraception were significantly more infected with HPV than the same groups of HIV-women.展开更多
Introduction: Cervical cancer can be prevented by early vaccination of young people against papillomaviruses and screening for precancerous lesions. After a successful pilot phase, vaccination coverage in the generali...Introduction: Cervical cancer can be prevented by early vaccination of young people against papillomaviruses and screening for precancerous lesions. After a successful pilot phase, vaccination coverage in the generalization phase is low. The aim of this study was to determine papillomavirus vaccination coverage and to identify associated factors. Methods: This was a cross-sectional, descriptive and analytical study conducted from (1<sup>st</sup>) to (31<sup>th</sup>) September (2020) in Koumpentoum district. After a literature review, we conducted two-stage cluster sampling and direct structured interviews. Socio-demographic characteristics, knowledge, attitudes, and practices of mothers or guardians about papillomaviruses vaccination were collected using a standardized questionnaire. Multiple logistic regression was used to estimate odds ratios. Results: A total of (228) mothers or guardians were interviewed. Coverage for the first dose was (44.74%) CI<sub>95%</sub> (38.17 - 51.44) compared to (25.88%) CI<sub>95%</sub> (19.52 - 31.17) for the second dose. Factors statistically and significantly associated with coverage of the first dose of papillomaviruses vaccine were instruction of mothers or guardians (OR = 5.62 (3.16 - 9.99);p 0.001), schooling of the young girls (OR = 4.1 (2.23 - 7.53);p 0.001), information on cervical cancer (OR = 18.97 (5.68 - 63.24);p 0.001), knowledge of risks factors (OR = 8.04 (4.41 - 14.63);p 0.001), information on papillomaviruses vaccine (ORa = 10.26 (1.69 - 62.23);p = 0.011), knowledge on vaccine target (OR = 17.11 (8.51 - 34.41);p 0.001), knowledge of schedule vaccine (ORa = 3.67 (1.2 - 22.51);p = 0.022), knowledge of prevention methods (OR = 26.86 (12.22 - 59.05);p 0.001), and to be favorable in expanded vaccination program in general (ORa = 18.71 (1.5 - 128.41];p = 0.02). Conclusion: Vaccination of young girls against papillomaviruses in Koumpentoum health district could be improved by comprehensive interpersonal communication with mothers and guardians about cervical cancer and its prevention.展开更多
基金Supported by the National Research Foundation of Korea,No.2020R1A2C1100891Soonchunhyang University Research Fund,No.2024-05-014.
文摘BACKGROUND The high prevalence of human papillomavirus(HPV)infection in oropharyngeal squamous cell carcinoma(SCC)is well established,and p16 expression is a strong predictor.HPV-related tumors exhibit unique mechanisms that target p16 and p53 proteins.However,research on HPV prevalence and the combined predictive value of p16 and p53 expression in head and neck cutaneous SCC(HNCSCC),particularly in Asian populations,remains limited.This retrospective study surveyed 62 patients with HNSCC(2011-2020),excluding those with facial warts or other skin cancer.AIM To explore the prevalence of HPV and the predictive value of p16 and p53 expression in HNCSCC in Asian populations.METHODS All patients underwent wide excision and biopsy.Immunohistochemical staining for HPV,p16,and p53 yielded positive and negative results.The relevance of each marker was investigated by categorizing the tumor locations into high-risk and middle-risk zones based on recurrence frequency.RESULTS Of the 62 patients,20(32.26%)were male,with an average age of 82.27 years(range 26-103 years).High-risk included 19 cases(30.65%),with the eyelid and lip being the most common sites(five cases,8.06%).Middle-risk included 43 cases(69.35%),with the cheek being the most common(29 cases,46.77%).The p16 expression was detected in 24 patients(38.71%),p53 expression in 42 patients(72.58%),and HPV in five patients(8.06%).No significant association was found between p16 expression and the presence of HPV(P>0.99),with a positive predictive value of 8.33%.CONCLUSION This study revealed that p16,a surrogate HPV marker in oropharyngeal SCC,is not reliable in HNCSCC,providing valuable insights for further research in Asian populations.
基金Supported by Dirección General de Asuntos del Personal Académico,Universidad Nacional Autónoma de México No.IN207514Consejo Nacional de Ciencia y Tecnología,Mexico,No.168098
文摘Human papillomaviruses(HPVs) are a large family of double strand DNA viruses comprising more than 180 types. Infection with HPV is very common and it is associated with benign and malignant proliferation of skin and squamous mucosae. Many HPVs, considered lowrisk such as HPV 6 and 11, produce warts; while highrisk viruses, such as HPVs 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, and 58, induce tumors. About 5% of all cancers in men and women are associated with HPV infection. Because there are not antiviral drugs for HPV infection, current therapies for low-risk HPV infections involve physical removal of the lesion by cryotherapy, trichloracetic acid, laser, or surgical removal. Surgical procedures are effective in the treatment of precancerous lesions, however after these procedures, many recurrences appear due to new re-infections, or to failure of the procedure to eliminate the HPV. In addition, HPV can inhibit recognition of malignant cellsby the immune system, leading to the development of cancer lesions. When this occurs, radiotherapy and chemotherapy are then used. Unfortunately, about 50% of the HPV-cancer patients still die. In the past decade, a better knowledge of the natural history of the virushost interaction and of the immune response against this viral infection has brought new therapeutic strategies geared to modulate the immune system to generate an efficient virus-specific cytotoxic response. Novel HPV protein-expressing vaccines have shown some significant clinical efficacy and systemic HPV-specific cytotoxic T cell responses. This review will describe the current status of the several therapeutic strategies used to treat HPV-induced lesions, and discuss the various new therapies now being tested.
文摘Objective To study the circulation, distribution, and genomic diversity of HPVs in common warts in Beijing area of China. Methods Forty eight patients with pathologically diagnosed common warts were screened for the presence of HPV with HPV type-specific PCR and direct sequencing analysis. The genomic diversity of HPVs prevalent in Chinese patients was analyzed based on LCR. Results Forty one （85.5%） samples were positive for HPV DNA, 13（31.7%）-HPV-57, 12（29.3%）-HPV-la, 7（17%）-HPV-27 and 5（12.2%）-HPV-2a. Four cases were infected with two different HPV types, two （4.9%） with HPV-la and HPV-27, one （2.4%） with HPV-1 and HPV-57 and one （2.4%） with HPV-27 and HPV-57. In contrast to the prevalence of single strain of novel HPV-57 variant and HPV-1 prototype, two HPV-2 and three HPV-27 novel variants were found to circulate in Beijing. Conclusion HPV-1, -2, -27 and -57 are predominantly prevalent in patients with common warts in Beijing.
文摘Background: Different studies have demonstrated high prevalence of HPV infection and dysplastic lesions of the cervix in immunocompromised patient such as women living with HIV. Is this high prevalence due to a greater susceptibility to HPV infection, which is known to be frequent in its latent form in women? Objective: This study aims to identify HPV genotypes in HIV+ and HIV−women to understand HPV molecular epidemiology in Senegal. Material and Method: Endocervical samples from 331 HIV+ and HIV−women, sexually active, were collected. The molecular identification of the 28 genotypes studied (19 HPV-HR and 9 HPV-LR) was carried out after DNA extraction, by multiplex PCR with the Anyplex™II HPV28 detection kit from Seegene on CFX96™Bio-Rad machine. The comparisons were made by calculating the p-value and odds ratio with R Studio software (version 4.1.0). The results were considered significant if p Results: The general prevalence of HPV was significantly higher in HIV+ women with 78.95% vs 64.65% for HPV;72.18% vs 57.07% for HPV-HR;57.14% vs 34.34% for HPV-BR (p −women. Conclusion: Our results showed that the prevalence of HPV, HPV-HR and HPV-BR was significantly higher in HIV+ women. Non-vaccine genotypes were among the most found genotypes. Groups of HIV+ women aged between 35 and 50, married and using contraception were significantly more infected with HPV than the same groups of HIV-women.
文摘Introduction: Cervical cancer can be prevented by early vaccination of young people against papillomaviruses and screening for precancerous lesions. After a successful pilot phase, vaccination coverage in the generalization phase is low. The aim of this study was to determine papillomavirus vaccination coverage and to identify associated factors. Methods: This was a cross-sectional, descriptive and analytical study conducted from (1<sup>st</sup>) to (31<sup>th</sup>) September (2020) in Koumpentoum district. After a literature review, we conducted two-stage cluster sampling and direct structured interviews. Socio-demographic characteristics, knowledge, attitudes, and practices of mothers or guardians about papillomaviruses vaccination were collected using a standardized questionnaire. Multiple logistic regression was used to estimate odds ratios. Results: A total of (228) mothers or guardians were interviewed. Coverage for the first dose was (44.74%) CI<sub>95%</sub> (38.17 - 51.44) compared to (25.88%) CI<sub>95%</sub> (19.52 - 31.17) for the second dose. Factors statistically and significantly associated with coverage of the first dose of papillomaviruses vaccine were instruction of mothers or guardians (OR = 5.62 (3.16 - 9.99);p 0.001), schooling of the young girls (OR = 4.1 (2.23 - 7.53);p 0.001), information on cervical cancer (OR = 18.97 (5.68 - 63.24);p 0.001), knowledge of risks factors (OR = 8.04 (4.41 - 14.63);p 0.001), information on papillomaviruses vaccine (ORa = 10.26 (1.69 - 62.23);p = 0.011), knowledge on vaccine target (OR = 17.11 (8.51 - 34.41);p 0.001), knowledge of schedule vaccine (ORa = 3.67 (1.2 - 22.51);p = 0.022), knowledge of prevention methods (OR = 26.86 (12.22 - 59.05);p 0.001), and to be favorable in expanded vaccination program in general (ORa = 18.71 (1.5 - 128.41];p = 0.02). Conclusion: Vaccination of young girls against papillomaviruses in Koumpentoum health district could be improved by comprehensive interpersonal communication with mothers and guardians about cervical cancer and its prevention.
