AIM To examine the clinical features and risk factors for adverse outcomes in chronic hepatitis B(CHB) superimposed with hepatitis E virus(HEV).METHODS This retrospective cohort study included 228 patients with acute ...AIM To examine the clinical features and risk factors for adverse outcomes in chronic hepatitis B(CHB) superimposed with hepatitis E virus(HEV).METHODS This retrospective cohort study included 228 patients with acute HEV infection(showing clinical acute hepatitis symptomology and positivity for anti-HEV immunoglobulin M) with underlying CHB(confirmed by positivity for hepatitis B surface antigen and/or hepatitis B virus(HBV) DNA over 6 mo) who had been admitted to the Shanghai Public Health Clinical Center, which represents the regional tertiary hospital for infectious diseases in Shanghai city, China. Data for adverse outcomes were collected, and included severe liver diseases(defined as liver failure and/or acute liver decompensation) and liver-related mortality. Logistic regression modeling was performed to determine the risk factors for adverse outcomes.RESULTS The symptoms caused by superimposed acute hepatitis E(AHE) were much more severe in cirrhotic patients(n = 94) than in non-cirrhotic patients(n = 134), as evidenced by significantly higher liver complications(77.7% vs 28.4%, P < 0.001) and mortality rate(21.3% vs 7.5%, P = 0.002). Most of the cirrhotic patients(n = 85, 90.4%) had no prior decompensation. Among the non-cirrhotic patients, superimposed AHE caused progressively more severe diseases that corresponded with the CHB disease stages, from immune tolerant to immune reactivation phases. Few risk factors were identified in the cirrhotic patients, but risk factors for non-cirrhotic patients were found to be intermediate HBV DNA levels(OR: 5.1, P = 0.012), alcohol consumption(OR: 6.4, P = 0.020), and underlying diabetes(OR: 7.5, P = 0.003) and kidney diseases(OR: 12.7, P = 0.005). Only 28.7% of the cirrhotic patients and 9.0% of the non-cirrhotic patients had received anti-HBV therapy previously and, in all cases, the efficacy had been suboptimal. CONCLUSION CHB-related cirrhosis and intermediate HBV DNA level were associated with severe disease in superinfected patients, and successful antiviral tr展开更多
AIM： To determine the prevalence of hepatitis B and C virus infections in human immunodeficiency virus （HIV） -positive patients at a tertiary care hospital in New Delhi, India. METHODS： Serum samples from 451 HIV ...AIM： To determine the prevalence of hepatitis B and C virus infections in human immunodeficiency virus （HIV） -positive patients at a tertiary care hospital in New Delhi, India. METHODS： Serum samples from 451 HIV positive patients were analyzed for HBsAg and HCV antibodies during three years （Jan 2003-Dec 2005）. The control group comprised of apparently healthy bone-marrow and renal donors. RESULTS： The study population comprised essentially of heterosexually transmitted HIV infection. The prevalence Fate of HBsAg in this population was 5.3% as compared to 1.4% in apparently healthy donors （P 〈 0.001）. Though prevalence of HCV co-infection （2.43%） was lower than HBV in this group of HIV positive patients, the prevalence was significantly higher （P 〈 0.05） than controls （0.7%）. Triple infection of HIV, HBV and HCV was not detected in any patient. CONCLUSION： Our study shows a significantly high prevalence of hepatitis virus infections in HIV infected patients. Hepatitis viruses in HIV may lead to faster progression to liver cirrhosis and a higher risk of antiretroviral therapy induced hepatotoxicity. Therefore, it would be advisable to detect hepatitis virus coinfections in these patients at the earliest.展开更多
Tuberculosis disease stands for the second leading cause of death worldwide after COVID-19, most active tuberculosis cases result from the reactivation of latent TB infection through impairment of immune response. Sev...Tuberculosis disease stands for the second leading cause of death worldwide after COVID-19, most active tuberculosis cases result from the reactivation of latent TB infection through impairment of immune response. Several factors are known to sustain that process.Schistosoma mansoni, a parasite of the helminth genus that possesses switching power from an immune profile type Th1 to Th2 that favors reactivation of latent TB bacteria. The aim of the study was to assess the prevalence of the co-infection between the two endemic infections. Systematic literature was contacted at the University Clinical Research Center at the University of Sciences, Techniques, and Technologies of Bamako in Mali. Original articles were included, and full texts were reviewed to assess the prevalence and better understand the immunological changes that occur during the co-infection. In total, 3530 original articles were retrieved through database search, 53 were included in the qualitative analysis, and data from 10 were included in the meta-analysis. Prevalence of the co-infection ranged from 4% to 34% in the literature. Most of the articles reported that immunity against infection with helminth parasite and more specifically Schistosoma mansoni infection enhances latent TB reactivation through Th1/Th2. In sum, the impact of Schistosoma mansoni co-infection with Mycobacterium tuberculosis is under-investigated. Understanding the role of this endemic tropical parasite as a contributing factor to TB epidemiology and burden could help integrate its elimination as one of the strategies to achieve the END-TB objectives by the year 2035.展开更多
Eradicating tuberculosis in human immunodeficiency virus is all the more important to realise India’s ambitious goal of tuberculosis free India by 2025.Although,continuous efforts are being made to address tuberculos...Eradicating tuberculosis in human immunodeficiency virus is all the more important to realise India’s ambitious goal of tuberculosis free India by 2025.Although,continuous efforts are being made to address tuberculosis in human immunodeficiency virus co-infection,it is imperative to closely monitor the implemented strategies,encourage and validate disease notification system in the country,and bring about societal change to view this disease as an ailment only and not as a stigma.展开更多
Several reviews have focused on the nature of HIV infection and its spread in various geographical regions of China. In contrast, this review provides a comprehensive update on the prevalence of multiple HIV- 1 subtyp...Several reviews have focused on the nature of HIV infection and its spread in various geographical regions of China. In contrast, this review provides a comprehensive update on the prevalence of multiple HIV- 1 subtypes, consequent emergence of recombinant and novel forms of HIV- 1 in China, and the implications this may have on HIV diversity and the development of effective vaccines. In addition it also examines the dissemination of primary drug resistance in therapy naive patients, as well as co-infections with two other important viruses-hepatitis B and C. The main purpose of this review is to provide a current snapshot of HIV-1 pathogenesis in China and possibly shed some light on the future of HIV evolution, and potential challenges for future vaccine and anti-retroviral therapeutics against HIV strains in this area.展开更多
We present a rare case of multiple infections coexisting together. This is one of the rarest cases of four infections which coexisted together in our patient. It is an alarming for the physicians to be aware of such i...We present a rare case of multiple infections coexisting together. This is one of the rarest cases of four infections which coexisted together in our patient. It is an alarming for the physicians to be aware of such infections as early prompt diagnosis can be lifesaving.展开更多
Background： Unhygienic blood collection in the early 1990s led to blood-borne infections in Central China. This study aimed to estimate human immunodeficiency virus （HIV） co-infection with hepatitis C and B viruses...Background： Unhygienic blood collection in the early 1990s led to blood-borne infections in Central China. This study aimed to estimate human immunodeficiency virus （HIV） co-infection with hepatitis C and B viruses （HCV and HBV） and their risk factors in a rural area of Shanxi Province with a history of commercial blood donation. Methods： A cross-sectional study was conducted in 2004. All adult residents in the target area were invited to participate in the study. Face-to-face interviews were completed and blood specimens were tested for HIV, HCV, and HBV surface antigen （HBsAg）. Results： Prevalence rates of HIV, HCV, and HBsAg were 1.3% （40/3 062）, 12.7% （389/3 062）, and 3.5% （103/2982）, respectively. Of the 40 HIV-positive specimens, 85% were HCV positive and 2.5% were HBsAg positive. The history of commercial blood donation was positively associated with HIV, HCV, and HIV/HCV co-infections, but was negatively associated with HBsAg seropositivity. Migration for employment in the last 5 years was positively related to HIV, HBsAg, and HIV/HCV co-infections. Univariate logistic analysis showed that illegal drug use, number of sex partners, extramarital sex behavior, commercial sex behavior, and condom use rate were not related to anti-HIV, anti-HCV, HBsAg seropositivity or their co-infections. Conclusion： The history of commercial blood donation was the main risk factor for HIV, HCV, and HIV/HCV co-infections in this former commercial blood donation area. HIV and HCV prevention and treatment interventions are important in this area.展开更多
Background:Post-Soviet Kyrgyzstan has experienced a major surge in blood-borne infections,but data from adequately powered,up-to-date studies are lacking.We thus examined a)the seroprevalences of hepatitis B virus sur...Background:Post-Soviet Kyrgyzstan has experienced a major surge in blood-borne infections,but data from adequately powered,up-to-date studies are lacking.We thus examined a)the seroprevalences of hepatitis B virus surface antigen(HBsAg),HIV-1 p24 antigen and antibodies against hepatitis C virus(anti-HCV),human immunodeficiency viruses(anti-HIV-1/2,HIV-1 group O),and Treponema pallidum among blood donors in Kyrgyzstan and assess their distribution according to sex,age,and provinces of residence;b)trends in the respective seroprevalences;and c)co-infection rates among the pathogens studied.Methods:Serological screening was performed on 37165 blood donors at the Republican Blood Centre in Bishkek,Kyrgyzstan,between January 2013 and December 2015.We applied poststratification weights to control for sampling bias and used logistic regression analyses to examine the association of seropositivity and co-infections with sex,age,provinces of residence,and year of blood donation.Results:Twenty nine thousand and one hundred forty-five(78%)donors were males and 8020(22%)were females.The median age was 27 years(range:18-64).The prevalences of HBsAg,anti-HCV,HIV(p24 Ag and anti-HIV),and anti-T.pallidum were 3.6%(95%CI:3.4-3.8%),3.1%(3.0-3.3%),0.78%(0.69-0.87%),and 3.3%(3.1-3.5%),respectively.Males were more likely to be seropositive for HBsAg than females(OR:1.63;95%CI:1.40-1.90),but less likely to be seropositive for anti-HCV(0.85;0.74-0.98)and HIV(0.65;0.49-0.85).Prevalences were lower in the capital than in the other provinces.There was a decreasing trend in the seroprevalences of HBsAg,anti-HCV,and anti-T.pallidum from 2012 to 2015(P-value for trend,P=0.01,P<0.0001,P<0.0001,respectively),while the seroprevalence of HIV increased(P=0.049).One hundred eighty donors(0.48%)were seropositive for multiple infections.The highest co-infection rate was observed between anti-T.pallidum and HBsAg(6.0%),followed by anti-HCV and anti-T.pallidum(5.2%),and HIV and anti-HCV(4.9%).Conclusions:The data suggest that Kyrgyzstan can be reclass展开更多
Aims: To assess the frequency and the main HPV genotypes circulating among a group of women attending at a third level Hospital in Mexico City. Methods: A cross-sectional and descriptive study was performed in a group...Aims: To assess the frequency and the main HPV genotypes circulating among a group of women attending at a third level Hospital in Mexico City. Methods: A cross-sectional and descriptive study was performed in a group of 143 female outpatients of the Gynecology and Obstetrics Service at the National Institute of Perinatology of Mexico. Cervical swabs were taken from participants and subjected to simultaneous detection/genotyping of HPV by Linear Array Genotyping Test (Roche Molecular Systems). Mann-Whitney U, median and/or Square Chi tests were used to compare socio-demographical features between HPV-infected and uninfected women. Results: A total of 66 women (46.2%) had HPV infection. Overall, 112 genotypes were detected either as single infections (45.5%) or multiple genotype infections (54.5%). The cumulated frequency of multiple infections with high-/low- and high-/high-risk HPV genotypes was 63.9 %. The most frequent high-risk genotypes were HPV52 HPV58 and HPV51, whereas the most frequent low-risk genotypes were HPV6, HPV53 and HPV84. Infected women were significantly younger and have less stable partner relationships than uninfected women (p < 0.05). Conclusion: A relevant frequency of mixed infections with high- and low-risk HPV genotypes, other than those considered most prevalent worldwide, was observed. Most circulating high-risk genotypes among the women of this study are not covered by commercial vaccine formulations.展开更多
Chronic Lyme disease complex describes the burden carried by patients infected with Borrelia burgdorferi as well as other co-infections or secondary co-infections (opportunistic infections). These infections can cause...Chronic Lyme disease complex describes the burden carried by patients infected with Borrelia burgdorferi as well as other co-infections or secondary co-infections (opportunistic infections). These infections can cause a significant burden on patients more so than Lyme disease alone. Along with the many underdiagnosed cases of Lyme disease throughout the world exists numerous undiagnosed co-infection and secondary co-infections leading to debilitating symptoms for many patients. The potential for co-infections varies by location as well as to the exposure to various species of ticks. Since there is potential for patients to experience several tick bites including those of different species, additional microorganisms also commonly transmitted via tick bite are included that are typically left out of the conversation of potential Borrelia burgdorferi co-infections. The most common co-infections of Lyme disease include anaplasmosis, babasiosis, bartonellosis and ehrlichiosis. Secondary co-infections or opportunistic infections commonly seen in patients with Lyme disease are also discussed. By helping to establish a comprehensive list of infections associated with Chronic Lyme disease complex may in fact help patients receive a proper diagnosis in order to administer the much needed comprehensive treatments patients deserve.展开更多
The maternally heritable endosymbiont provides many ecosystem functions.Antibiotic elimination of a specific symbiont and establishment of experimental host lines lacking certain symbionts enable the roles of a given ...The maternally heritable endosymbiont provides many ecosystem functions.Antibiotic elimination of a specific symbiont and establishment of experimental host lines lacking certain symbionts enable the roles of a given symbiont to be explored.The whitefly Bemisia tabaci(Gennadius)in China harbors obligate symbiont Portiera infecting each in-dividual,as well as facultative symbionts,such as Hamiltonella,Rickettsia and Cardinium,with co-infections occurring relatively frequently.So far no studies have evaluated the selectivity and efficacy of a specific symbiont elimination using antibiotics in whiteflies co-infected with different symbionts.Furthermore,no success has been achieved in estab-lishing certain symbiont-free B.tabaci lines.In this study,we treated Hamiltonella infected B.tabaci line,Hamiltonella-Rickettsia-co infected line and Hamiltonella-Cardinium co-infected line by feeding B.tabaci adults with cotton plants cultured in water containing ri-fampicin,ampicillin or a mixture of them,aiming to selectively curing symbiont infections and establishing stable symbiont-free lines.We found ampicillin selectively eliminated Cardinium without afecting Portiera,Hamiltonella and Rickettsia,although they coex-isted in the same host body.Meanwhile,all of the symbionts considered in our study can be removed by rifampicin.The reduction of facultative symbionts occurred at a much quicker pace than obligate symbiont Portiera during rifampicin treatment.Also,we measured the stability of symbiont elimination in whitefly successive generations and established Rickettsia-infected and Cardinium-infected lines which are absent in natural populations.Our results provide new protocols for selective elimination of symbionts co-existing in a host and establishment of different symbiont-infected host lines.展开更多
基金Supported by National Program on Key Basic Research Project(973 Program),No.2015CB554300(to Zhang SY)the Joint Research Program for Emerging Frontier Technology in the Municipal Hospital of Shanghai,China,No.SHDC12015129
文摘AIM To examine the clinical features and risk factors for adverse outcomes in chronic hepatitis B(CHB) superimposed with hepatitis E virus(HEV).METHODS This retrospective cohort study included 228 patients with acute HEV infection(showing clinical acute hepatitis symptomology and positivity for anti-HEV immunoglobulin M) with underlying CHB(confirmed by positivity for hepatitis B surface antigen and/or hepatitis B virus(HBV) DNA over 6 mo) who had been admitted to the Shanghai Public Health Clinical Center, which represents the regional tertiary hospital for infectious diseases in Shanghai city, China. Data for adverse outcomes were collected, and included severe liver diseases(defined as liver failure and/or acute liver decompensation) and liver-related mortality. Logistic regression modeling was performed to determine the risk factors for adverse outcomes.RESULTS The symptoms caused by superimposed acute hepatitis E(AHE) were much more severe in cirrhotic patients(n = 94) than in non-cirrhotic patients(n = 134), as evidenced by significantly higher liver complications(77.7% vs 28.4%, P < 0.001) and mortality rate(21.3% vs 7.5%, P = 0.002). Most of the cirrhotic patients(n = 85, 90.4%) had no prior decompensation. Among the non-cirrhotic patients, superimposed AHE caused progressively more severe diseases that corresponded with the CHB disease stages, from immune tolerant to immune reactivation phases. Few risk factors were identified in the cirrhotic patients, but risk factors for non-cirrhotic patients were found to be intermediate HBV DNA levels(OR: 5.1, P = 0.012), alcohol consumption(OR: 6.4, P = 0.020), and underlying diabetes(OR: 7.5, P = 0.003) and kidney diseases(OR: 12.7, P = 0.005). Only 28.7% of the cirrhotic patients and 9.0% of the non-cirrhotic patients had received anti-HBV therapy previously and, in all cases, the efficacy had been suboptimal. CONCLUSION CHB-related cirrhosis and intermediate HBV DNA level were associated with severe disease in superinfected patients, and successful antiviral tr
文摘AIM： To determine the prevalence of hepatitis B and C virus infections in human immunodeficiency virus （HIV） -positive patients at a tertiary care hospital in New Delhi, India. METHODS： Serum samples from 451 HIV positive patients were analyzed for HBsAg and HCV antibodies during three years （Jan 2003-Dec 2005）. The control group comprised of apparently healthy bone-marrow and renal donors. RESULTS： The study population comprised essentially of heterosexually transmitted HIV infection. The prevalence Fate of HBsAg in this population was 5.3% as compared to 1.4% in apparently healthy donors （P 〈 0.001）. Though prevalence of HCV co-infection （2.43%） was lower than HBV in this group of HIV positive patients, the prevalence was significantly higher （P 〈 0.05） than controls （0.7%）. Triple infection of HIV, HBV and HCV was not detected in any patient. CONCLUSION： Our study shows a significantly high prevalence of hepatitis virus infections in HIV infected patients. Hepatitis viruses in HIV may lead to faster progression to liver cirrhosis and a higher risk of antiretroviral therapy induced hepatotoxicity. Therefore, it would be advisable to detect hepatitis virus coinfections in these patients at the earliest.
文摘Tuberculosis disease stands for the second leading cause of death worldwide after COVID-19, most active tuberculosis cases result from the reactivation of latent TB infection through impairment of immune response. Several factors are known to sustain that process.Schistosoma mansoni, a parasite of the helminth genus that possesses switching power from an immune profile type Th1 to Th2 that favors reactivation of latent TB bacteria. The aim of the study was to assess the prevalence of the co-infection between the two endemic infections. Systematic literature was contacted at the University Clinical Research Center at the University of Sciences, Techniques, and Technologies of Bamako in Mali. Original articles were included, and full texts were reviewed to assess the prevalence and better understand the immunological changes that occur during the co-infection. In total, 3530 original articles were retrieved through database search, 53 were included in the qualitative analysis, and data from 10 were included in the meta-analysis. Prevalence of the co-infection ranged from 4% to 34% in the literature. Most of the articles reported that immunity against infection with helminth parasite and more specifically Schistosoma mansoni infection enhances latent TB reactivation through Th1/Th2. In sum, the impact of Schistosoma mansoni co-infection with Mycobacterium tuberculosis is under-investigated. Understanding the role of this endemic tropical parasite as a contributing factor to TB epidemiology and burden could help integrate its elimination as one of the strategies to achieve the END-TB objectives by the year 2035.
文摘Eradicating tuberculosis in human immunodeficiency virus is all the more important to realise India’s ambitious goal of tuberculosis free India by 2025.Although,continuous efforts are being made to address tuberculosis in human immunodeficiency virus co-infection,it is imperative to closely monitor the implemented strategies,encourage and validate disease notification system in the country,and bring about societal change to view this disease as an ailment only and not as a stigma.
文摘Several reviews have focused on the nature of HIV infection and its spread in various geographical regions of China. In contrast, this review provides a comprehensive update on the prevalence of multiple HIV- 1 subtypes, consequent emergence of recombinant and novel forms of HIV- 1 in China, and the implications this may have on HIV diversity and the development of effective vaccines. In addition it also examines the dissemination of primary drug resistance in therapy naive patients, as well as co-infections with two other important viruses-hepatitis B and C. The main purpose of this review is to provide a current snapshot of HIV-1 pathogenesis in China and possibly shed some light on the future of HIV evolution, and potential challenges for future vaccine and anti-retroviral therapeutics against HIV strains in this area.
文摘We present a rare case of multiple infections coexisting together. This is one of the rarest cases of four infections which coexisted together in our patient. It is an alarming for the physicians to be aware of such infections as early prompt diagnosis can be lifesaving.
基金supported by the United States National Institute of Health/National Institute of Allergy and Infectious Diseases (US NIH/NIAID Grant No: U19AI51915)
文摘Background： Unhygienic blood collection in the early 1990s led to blood-borne infections in Central China. This study aimed to estimate human immunodeficiency virus （HIV） co-infection with hepatitis C and B viruses （HCV and HBV） and their risk factors in a rural area of Shanxi Province with a history of commercial blood donation. Methods： A cross-sectional study was conducted in 2004. All adult residents in the target area were invited to participate in the study. Face-to-face interviews were completed and blood specimens were tested for HIV, HCV, and HBV surface antigen （HBsAg）. Results： Prevalence rates of HIV, HCV, and HBsAg were 1.3% （40/3 062）, 12.7% （389/3 062）, and 3.5% （103/2982）, respectively. Of the 40 HIV-positive specimens, 85% were HCV positive and 2.5% were HBsAg positive. The history of commercial blood donation was positively associated with HIV, HCV, and HIV/HCV co-infections, but was negatively associated with HBsAg seropositivity. Migration for employment in the last 5 years was positively related to HIV, HBsAg, and HIV/HCV co-infections. Univariate logistic analysis showed that illegal drug use, number of sex partners, extramarital sex behavior, commercial sex behavior, and condom use rate were not related to anti-HIV, anti-HCV, HBsAg seropositivity or their co-infections. Conclusion： The history of commercial blood donation was the main risk factor for HIV, HCV, and HIV/HCV co-infections in this former commercial blood donation area. HIV and HCV prevention and treatment interventions are important in this area.
基金The study was funded by internal funds of the Helmholtz Centre for Infection Research,Braunschweig,Germany and by iMed-the Helmholtz Association’s Cross-Program Initiative on Personalized Medicine.
文摘Background:Post-Soviet Kyrgyzstan has experienced a major surge in blood-borne infections,but data from adequately powered,up-to-date studies are lacking.We thus examined a)the seroprevalences of hepatitis B virus surface antigen(HBsAg),HIV-1 p24 antigen and antibodies against hepatitis C virus(anti-HCV),human immunodeficiency viruses(anti-HIV-1/2,HIV-1 group O),and Treponema pallidum among blood donors in Kyrgyzstan and assess their distribution according to sex,age,and provinces of residence;b)trends in the respective seroprevalences;and c)co-infection rates among the pathogens studied.Methods:Serological screening was performed on 37165 blood donors at the Republican Blood Centre in Bishkek,Kyrgyzstan,between January 2013 and December 2015.We applied poststratification weights to control for sampling bias and used logistic regression analyses to examine the association of seropositivity and co-infections with sex,age,provinces of residence,and year of blood donation.Results:Twenty nine thousand and one hundred forty-five(78%)donors were males and 8020(22%)were females.The median age was 27 years(range:18-64).The prevalences of HBsAg,anti-HCV,HIV(p24 Ag and anti-HIV),and anti-T.pallidum were 3.6%(95%CI:3.4-3.8%),3.1%(3.0-3.3%),0.78%(0.69-0.87%),and 3.3%(3.1-3.5%),respectively.Males were more likely to be seropositive for HBsAg than females(OR:1.63;95%CI:1.40-1.90),but less likely to be seropositive for anti-HCV(0.85;0.74-0.98)and HIV(0.65;0.49-0.85).Prevalences were lower in the capital than in the other provinces.There was a decreasing trend in the seroprevalences of HBsAg,anti-HCV,and anti-T.pallidum from 2012 to 2015(P-value for trend,P=0.01,P<0.0001,P<0.0001,respectively),while the seroprevalence of HIV increased(P=0.049).One hundred eighty donors(0.48%)were seropositive for multiple infections.The highest co-infection rate was observed between anti-T.pallidum and HBsAg(6.0%),followed by anti-HCV and anti-T.pallidum(5.2%),and HIV and anti-HCV(4.9%).Conclusions:The data suggest that Kyrgyzstan can be reclass
文摘Aims: To assess the frequency and the main HPV genotypes circulating among a group of women attending at a third level Hospital in Mexico City. Methods: A cross-sectional and descriptive study was performed in a group of 143 female outpatients of the Gynecology and Obstetrics Service at the National Institute of Perinatology of Mexico. Cervical swabs were taken from participants and subjected to simultaneous detection/genotyping of HPV by Linear Array Genotyping Test (Roche Molecular Systems). Mann-Whitney U, median and/or Square Chi tests were used to compare socio-demographical features between HPV-infected and uninfected women. Results: A total of 66 women (46.2%) had HPV infection. Overall, 112 genotypes were detected either as single infections (45.5%) or multiple genotype infections (54.5%). The cumulated frequency of multiple infections with high-/low- and high-/high-risk HPV genotypes was 63.9 %. The most frequent high-risk genotypes were HPV52 HPV58 and HPV51, whereas the most frequent low-risk genotypes were HPV6, HPV53 and HPV84. Infected women were significantly younger and have less stable partner relationships than uninfected women (p < 0.05). Conclusion: A relevant frequency of mixed infections with high- and low-risk HPV genotypes, other than those considered most prevalent worldwide, was observed. Most circulating high-risk genotypes among the women of this study are not covered by commercial vaccine formulations.
文摘Chronic Lyme disease complex describes the burden carried by patients infected with Borrelia burgdorferi as well as other co-infections or secondary co-infections (opportunistic infections). These infections can cause a significant burden on patients more so than Lyme disease alone. Along with the many underdiagnosed cases of Lyme disease throughout the world exists numerous undiagnosed co-infection and secondary co-infections leading to debilitating symptoms for many patients. The potential for co-infections varies by location as well as to the exposure to various species of ticks. Since there is potential for patients to experience several tick bites including those of different species, additional microorganisms also commonly transmitted via tick bite are included that are typically left out of the conversation of potential Borrelia burgdorferi co-infections. The most common co-infections of Lyme disease include anaplasmosis, babasiosis, bartonellosis and ehrlichiosis. Secondary co-infections or opportunistic infections commonly seen in patients with Lyme disease are also discussed. By helping to establish a comprehensive list of infections associated with Chronic Lyme disease complex may in fact help patients receive a proper diagnosis in order to administer the much needed comprehensive treatments patients deserve.
基金We thank Kai-Li Zhang of Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences for help with the collection of B.tabaci populations.This study was supported by the National Natural Science Foundation of China(31701797)the Natural Science Foundation of Jiangsu Province,China(BK20170598)the Key Re-search and Development Program of Jiangsu Province,China(BE2010342).
文摘The maternally heritable endosymbiont provides many ecosystem functions.Antibiotic elimination of a specific symbiont and establishment of experimental host lines lacking certain symbionts enable the roles of a given symbiont to be explored.The whitefly Bemisia tabaci(Gennadius)in China harbors obligate symbiont Portiera infecting each in-dividual,as well as facultative symbionts,such as Hamiltonella,Rickettsia and Cardinium,with co-infections occurring relatively frequently.So far no studies have evaluated the selectivity and efficacy of a specific symbiont elimination using antibiotics in whiteflies co-infected with different symbionts.Furthermore,no success has been achieved in estab-lishing certain symbiont-free B.tabaci lines.In this study,we treated Hamiltonella infected B.tabaci line,Hamiltonella-Rickettsia-co infected line and Hamiltonella-Cardinium co-infected line by feeding B.tabaci adults with cotton plants cultured in water containing ri-fampicin,ampicillin or a mixture of them,aiming to selectively curing symbiont infections and establishing stable symbiont-free lines.We found ampicillin selectively eliminated Cardinium without afecting Portiera,Hamiltonella and Rickettsia,although they coex-isted in the same host body.Meanwhile,all of the symbionts considered in our study can be removed by rifampicin.The reduction of facultative symbionts occurred at a much quicker pace than obligate symbiont Portiera during rifampicin treatment.Also,we measured the stability of symbiont elimination in whitefly successive generations and established Rickettsia-infected and Cardinium-infected lines which are absent in natural populations.Our results provide new protocols for selective elimination of symbionts co-existing in a host and establishment of different symbiont-infected host lines.
