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https://www.readbyqxmd.com/read/29027107/viral-factors-for-hbv-mother-to-child-transmission
#1
James S Park, Calvin Q Pan
Chronic hepatitis B virus (HBV) remains a leading cause of cirrhosis and hepatocellular carcinoma worldwide. Because chronic hepatitis B infection is rarely eradicated, preventing mother-to-child transmission (MTCT) is the most effective strategy to eliminate HBV globally. Although immunoprophylaxis strategy is widely available and effective for infants born to mothers with chronic hepatitis B infection, postnatal immunoprophylaxis fails in approximately 5-10 % of infants, and this failure rate goes up to 30 % in infants born to highly viremic mothers...
October 12, 2017: Hepatology International
https://www.readbyqxmd.com/read/29020844/nucleoside-nucleotide-analogues-in-the-treatment-of-chronic-hepatitis-b-infection-during-pregnancy-a-systematic-review
#2
Soheil Tavakolpour, Mohammad Darvishi, Hajar Sadat Mirsafaei, Mojtaba Ghasemiadl
BACKGROUND: Women of childbearing age who have developed chronic hepatitis B (CHB) infection, especially HBeAg-positive highly viraemic pregnant women, are largely responsible for the familial transmission of the infection. Therefore, choosing the most effective and safest antiviral medications to manage pregnant CHB patients is of crucial importance. MATERIALS AND METHODS: The PubMed and Scopus databases were searched through September 2017, for all the journal articles possessing original results regarding treatment of CHB pregnant women with any nucleos(t)ide analogue (NA) therapies, including lamivudine (LAM), adefovir (ADV), entecavir (ETV), telbivudine (LdT), and tenofovir (TDF)...
October 11, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28984760/implementation-effectiveness-of-revised-post-2010-world-health-organization-guidelines-on-prevention-of-mother-to-child-transmission-of-hiv-using-routinely-collected-data-in-sub-saharan-africa-a-systematic-literature-review
#3
REVIEW
Sehlulekile Gumede-Moyo, Suzanne Filteau, Tendai Munthali, Jim Todd, Patrick Musonda
BACKGROUND: To synthesize and evaluate the impact of implementing post-2010 World Health Organization (WHO) prevention of mother-to-child transmission (PMTCT) guidelines on attainment of PMTCT targets. METHODS: Retrospective and prospective cohort study designs that utilized routinely collected data with a focus on provision and utilization of the cascade of PMTCT services were included. The outcomes included the proportion of pregnant women who were tested during their antenatal clinic (ANC) visits; mother-to-child transmission (MTCT) rate; adherence; retention rate; and loss to follow-up (LTFU)...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28935971/prevalence-of-chronic-hepatitis-b-and-status-of-hbv-care-among-rural-women-who-planned-to-conceive-in-china
#4
Yuanyuan Wang, Hong Zhou, Long Zhang, Qiuyue Zhong, Qiaomei Wang, Haiping Shen, Man Zhang, Yanjie Huang, Anqi Wang, Kenrad Nelson, Yiping Zhang, Donghai Yan, Zuoqi Peng, Ya Zhang, Xiaona Xin, Hongguang Zhang, Jun Zhao, Yan Wang, Ying Yang, Yuan He, Jihong Xu, Xiaoli Liu, Yan Wang, Xu Ma
Globally, one third of prevalent chronic hepatitis B (CHB) virus infection (HBV) occurred in China. Assessing the prevalence of CHB infesction and status of HBV-related services among pre-conception women will provide insight into risks of mother to child transmission (MTCT). A cross-sectional analysis of data from the National Free Pre-pregnancy Checkups (NFPC) program in 2010-2014 was conducted. A standardized questionnaire which collected demographic information and enzyme-linked immunosorbent assays (ELISA) which tested serological HBV markers were applied...
September 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928750/the-role-of-maternal-hiv-envelope-specific-antibodies-and-mother-to-child-transmission-risk
#5
REVIEW
Ayooluwa O Douglas, David R Martinez, Sallie R Permar
Despite the wide availability of antiretroviral therapy (ART) prophylaxis during pregnancy, >150,000 infants become infected through mother-to-child transmission (MTCT) of HIV worldwide. It is likely that additional intervention strategies, such as a maternal HIV vaccine, will be required to eliminate pediatric HIV infections. A deeper understanding of the fine specificity and function of maternal HIV envelope (Env)-specific responses that provide partial protection against MTCT will be critical to inform the design of immunologic strategies to curb the pediatric HIV epidemic...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28899348/cesarean-section-to-prevent-mother-to-child-transmission-of-hepatitis-b-virus-in-china-a-meta-analysis
#6
Mei Yang, Qin Qin, Qiong Fang, Lixin Jiang, Shaofa Nie
BACKGROUND: Hepatitis B virus (HBV) is predominantly transmitted through mother-to-child transmission (MTCT). To date, it remains unclear whether the method of parturition affects MTCT of HBV. In order to clarify whether cesarean section, when compared with vaginal delivery, could reduce the risk of MTCT of HBV in China, we conducted this meta-analysis. METHODS: A systematic literature search was performed of the PubMed (Medline), Embase, ISI Web of Science, China Biological Medicine Database, China National Knowledge Infrastructure, and VIP Database for Chinese Technical Periodicals databases for articles written in English or Chinese through July 2015...
September 12, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28860476/quantifying-perinatal-transmission-of-hepatitis-b-viral-quasispecies-by-tag-linkage-deep-sequencing
#7
Yushen Du, Xiumei Chi, Chong Wang, Jing Jiang, Fei Kong, Hongqing Yan, Xiaomei Wang, Jie Li, Nicholas C Wu, Lei Dai, Tian-Hao Zhang, Sara Shu, Jian Zhou, Janice M Yoshizawa, Xinmin Li, Debika Bhattacharya, Ting-Ting Wu, Junqi Niu, Ren Sun
Despite full immunoprophylaxis, mother-to-child transmission (MTCT) of Hepatitis B Virus still occurs in approximately 2-5% of HBsAg positive mothers. Little is known about the bottleneck of HBV transmission and the evolution of viral quasispecies in the context of MTCT. Here we adopted a newly developed tag linkage deep sequencing method and analyzed the quasispecies of four MTCT pairs that broke through immunoprophylaxis. By assigning unique tags to individual viral sequences, we accurately reconstructed HBV haplotypes in a region of 836 bp, which contains the major immune epitopes and drug resistance mutations...
August 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28839513/knowledge-and-awareness-of-mtct-and-pmtct-post-natal-follow-up-services-among-hiv-infected-mothers-in-the-mankweng-region-south-africa
#8
Refilwe Ramoshaba, Sello Levy Sithole
BACKGROUND: The pandemic of Human Immunodeficiency Virus (HIV) is the most severe health challenge affecting children across the world. It is estimated that more than 90% of all HIV infections in children result from Mother-to-Child Transmission (MTCT). Poor knowledge and awareness of MTCT and Prevention of Mother-to-Child Transmission (PMTCT) among HIV positive mothers and their babies is a major setback to the success of the PMTCT programmes. METHODS: A qualitative approach and a cross-sectional design were applied in this study...
2017: Open AIDS Journal
https://www.readbyqxmd.com/read/28819511/male-partner-involvement-in-the-prevention-of-mother-to-child-transmission-of-hiv-infection-in-mwanza-region-tanzania
#9
Munda Elias, Elia John Mmbaga, Ahmed Abade Mohamed, Rogath Saika Kishimba
INTRODUCTION: Globally, there are 3.3 million children < 15 years of age living with HIV infection. About 95% of HIV infected children have acquired infection from their mothers. Although new pediatric HIV infection in Tanzania has declined by 48% and Prevention of Mother to Child Transmission (PMTCT) coverage of highly active anti-retroviral therapy (HAART) has increased to 77%, the MTCT rate remains high (15%). Poor male partner involvement in PMTCT services is one of the factors contributing to reduced effectiveness of the PMTCT and hence failure to achieve the elimination of maternal to child transmission of HIV...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28814388/impact-of-poxvirus-vector-priming-protein-coadministration-and-vaccine-intervals-on-hiv-gp120-vaccine-elicited-antibody-magnitude-and-function-in-infant-macaques
#10
Bonnie Phillips, Genevieve G Fouda, Josh Eudailey, Justin Pollara, Alan D Curtis, Erika Kunz, Maria Dennis, Xiaoying Shen, Camden Bay, Michael Hudgens, David Pickup, S Munir Alam, Amir Ardeshir, Pamela A Kozlowski, Koen K A Van Rompay, Guido Ferrari, M Anthony Moody, Sallie Permar, Kristina De Paris
Despite success in reducing vertical HIV transmission by maternal antiretroviral therapy, several obstacles limit its efficacy during breastfeeding, and breast-milk transmission is now the dominant mode of mother-to-child transmission (MTCT) of HIV in infants. Thus, a pediatric vaccine is needed to eradicate oral HIV infections in newborns and infants. Utilizing the infant rhesus macaque model, we compared 3 different vaccine regimens: (i) HIV envelope (Env) protein only, (ii) poxvirus vector (modified vaccinia virus Ankara [MVA])-HIV Env prime and HIV Env boost, and (iii) coadministration of HIV Env and MVA-HIV Env at all time points...
October 2017: Clinical and Vaccine Immunology: CVI
https://www.readbyqxmd.com/read/28748061/host-molecular-factors-and-viral-genotypes-in-the-mother-to-child-hiv-1-transmission-in-sub-saharan-africa
#11
REVIEW
Linda Chapdeleine M Mouafo, Béatrice Dambaya, Nicole N Ngoufack, Céline N Nkenfou
Maternal viral load and immune status, timing and route of delivery, viral subtype, and host genetics are known to influence the transmission, acquisition and disease progression of human immunodeficiency virus-1 (HIV-1) infection. This review summarizes the findings from published works on host molecular factors and virus genotypes affecting mother to child transmission (MTCT) in Africa and identifies the gaps that need to be addressed in future research. Articles in PubMed, Google and AIDSearch and relevant conference abstracts publications were searched...
June 23, 2017: Journal of Public Health in Africa
https://www.readbyqxmd.com/read/28747410/a-systematic-review-and-meta-analysis-of-studies-evaluating-the-performance-and-operational-characteristics-of-dual-point-of-care-tests-for-hiv-and-syphilis
#12
REVIEW
Harriet D Gliddon, Rosanna W Peeling, Mary L Kamb, Igor Toskin, Teodora E Wi, Melanie M Taylor
BACKGROUND: Mother-to-child transmission (MTCT) of syphilis and HIV continue to be important yet preventable causes of perinatal and infant morbidity and mortality. OBJECTIVES: To systematically review, critically appraise and perform a meta-analysis to evaluate the operational characteristics of dual rapid diagnostic tests (RDTs) for HIV/syphilis and evaluate whether they are cost effective, acceptable and easy to use. DESIGN: Systematic review and meta-analysis...
July 26, 2017: Sexually Transmitted Infections
https://www.readbyqxmd.com/read/28747213/cesarean-delivery-technique-among-hiv-positive-women-with-sub-optimal-antenatal-care-uptake-at-the-douala-general-hospital-cameroon-case-series-report
#13
Thomas Obinchemti Egbe, Charlotte Nguefack Tchente, George-Fulbert Mangala Nkwele, Jacques Ernest Nyemb, Esther Mathio Barla, Eugene Belley-Priso
BACKGROUND: The human immunodeficiency virus (HIV) pandemic is a serious public health problem worldwide, especially in low-income countries of sub-Saharan Africa (SSA). The prevention of mother to child transmission of HIV (PMTCT) is a major concern to those countries. Cesarean section has been described in the literature to be effective in the prevention of mother to child transmission (MTCT). CASE SERIES PRESENTATION: We present a series of seven cases of HIV positive pregnant women with sub-optimal antenatal care up-take who delivered by cesarean section at the Department of Obstetrics and Gynecology of the Douala General Hospital...
July 26, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28732085/point-of-care-screening-for-hepatitis-b-virus-infection-in-pregnant-women-at-an-antenatal-clinic-a-south-african-experience
#14
Nafiisah Chotun, Wolfgang Preiser, Christoffel Johannes van Rensburg, Pedro Fernandez, Gerhard Barnard Theron, Dieter Glebe, Monique Ingrid Andersson
BACKGROUND & AIMS: Elimination of HIV and syphilis mother-to-child transmission (MTCT) has received much attention but little consideration has been given to the possibility of elimination of HBV MTCT. In sub-Saharan Africa, HBV vertical transmission continues to be reported and it remains an important public health problem. This study aimed to assess the feasibility of screening pregnant women for HBV using a point-of-care (POC) test and implementing interventions to prevent HBV MTCT...
2017: PloS One
https://www.readbyqxmd.com/read/28715460/early-infant-diagnosis-of-hiv-1-infection-in-luanda-angola-using-a-new-dna-pcr-assay-and-dried-blood-spots
#15
Francisco Martin, Claudia Palladino, Rita Mateus, Anna Bolzan, Perpétua Gomes, José Brito, Ana Patrícia Carvalho, Yolanda Cardoso, Cristovão Domingos, Vanda Sofia Lôa Clemente, Nuno Taveira
BACKGROUND: Early diagnosis and treatment reduces HIV-1-related mortality, morbidity and size of viral reservoirs in infants infected perinatally. Commercial molecular tests enable the early diagnosis of infection in infants but the high cost and low sensitivity with dried blood spots (DBS) limit their use in sub-Saharan Africa. OBJECTIVES: To develop and validate a sensitive and cheap qualitative proviral DNA PCR-based assay for early infant diagnosis (EID) in HIV-1-exposed infants using DBS samples...
2017: PloS One
https://www.readbyqxmd.com/read/28704472/prevention-of-mother-to-child-transmission-of-hiv-option-b-cascade-in-rural-tanzania-the-one-stop-clinic-model
#16
Anna Gamell, Lameck Bonaventure Luwanda, Aneth Vedastus Kalinjuma, Leila Samson, Alex John Ntamatungiro, Maja Weisser, Winfrid Gingo, Marcel Tanner, Christoph Hatz, Emilio Letang, Manuel Battegay
BACKGROUND: Strategies to improve the uptake of Prevention of Mother-To-Child Transmission of HIV (PMTCT) are needed. We integrated HIV and maternal, newborn and child health services in a One Stop Clinic to improve the PMTCT cascade in a rural Tanzanian setting. METHODS: The One Stop Clinic of Ifakara offers integral care to HIV-infected pregnant women and their families at one single place and time. All pregnant women and HIV-exposed infants attended during the first year of Option B+ implementation (04/2014-03/2015) were included...
2017: PloS One
https://www.readbyqxmd.com/read/28680836/ongoing-transmission-of-hcv-should-cesarean-section-be-justified-data-mining-discovery
#17
Abd Elrazek, Samy Saab, Mahmoud Foad, Elsayed A Elgohary, Mohammad M Sallam, Abdallah Nawara, Ali Ismael, Samar S Morsi, Altaher Salah, Mohamed Alboraie, Akshaya Srikanth Bhagavathula, Marwa Zayed, Hossam Elmasry, Tamer Z Salem
BACKGROUND AND OBJECTIVES: Over the past few decades, cesarean section (CS) rates are steadily increasing in most of the middle- and high-income countries. However, most of the pregnant women (particularly undergoing CS) are not screened for hepatitis C virus (HCV); hence, neonates born to HCV-positive mother could be a source of future HCV infection. In this study, the role of the CS and other surgical interventions in HCV transmission in Egypt, the highest endemic country of HCV-4, was investigated...
March 2017: Journal of Translational Internal Medicine
https://www.readbyqxmd.com/read/28658511/occult-hepatitis-b-virus-infection-in-immunized-children-born-to-carrier-mothers
#18
Koji Yokoyama, Hideki Kumagai, Masaharu Takahashi, Shigeo Nagashima, Hiroaki Okamoto, Takanori Yamagata
BACKGROUND: The prevalence of occult hepatitis B virus (HBV) infection (OBI) in children who develop the infection via mother-to-child transmission (MTCT) despite immunoprophylaxis remains controversial and is still unknown in Japan. The aim of this study was to determine the OBI prevalence among such children in Japan and identify the genomic mutations that might be associated with the pathogenesis of OBI in children. METHODS: The data on 158 children born to HBV carrier mothers and who received complete passive-active immunoprophylaxis after birth 2002-2014 were reviewed...
June 28, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28651839/post-vaccination-serologic-testing-of-infants-born-to-hepatitis-b-surface-antigen-positive-mothers-in-4-provinces-of-china
#19
Fuzhen Wang, Guomin Zhang, Hui Zheng, Ning Miao, Liping Shen, Feng Wang, Pumei Dong, Fei Du, Chao Chen, Xiaoshu Zhang, Fuqiang Cui
OBJECTIVE: To evaluate prenatal maternal hepatitis B virus (HBV) screening and post-vaccination hepatitis B surface antigen (HBsAg) and antibody to hepatitis B surface antigen (anti-HBs) status and titers of babies born to HBsAg positive mothers, and to provide evidence for development of standard postvaccination serologic testing (PVST) strategies for babies born to HBsAg positive mothers in China. METHODS: In 2014, we conducted a baseline survey of HBV mother to child transmission (MTCT) interruption strategy implementation and PVST for babies born to HBsAg positive mothers after received 3 doses of hepatitis B vaccine (HepB) in 8 counties in 4 Provinces...
July 24, 2017: Vaccine
https://www.readbyqxmd.com/read/28647993/-impact-of-hiv-hbv-infection-and-hiv-hbv-co-infection-on-outcomes-of-pregnancy
#20
Y Yang, W T Cheng, Y B Zhou, Q W Jiang
Both HIV and HBV infection have become major health problems, of global concern, due to the high prevalence in the past few decades. Data from cumulated epidemiological surveys have shown the links between maternal HIV or HBV infection and adverse outcomes on pregnancy. Maternal HIV or HBV infection may also increase the mother-to-child (MTCT) transmission of the two diseases. However, association between HIV-HBV co-infection and adverse pregnancy is still inconclusive. Does maternal HIV-HBV co-infection have an impact on mother-to-child transmission on either HIV or HBV? Study on effective precautionary measures to promote both maternal and child's health is deemed necessary...
June 10, 2017: Zhonghua Liu Xing Bing Xue za Zhi, Zhonghua Liuxingbingxue Zazhi
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