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https://www.readbyqxmd.com/read/29785877/hepatitis-b-virus-lymphotropism-emerging-details-and-challenges
#1
Shivali S Joshi, Carla S Coffin
The hepatitis B virus (HBV) is predominantly a hepatotropic virus but also infects cells of the lymphatic system. HBV genomes (DNA, messenger (m)RNA, covalently closed circular (ccc) DNA) and proteins have been found in extrahepatic sites such as peripheral blood mononuclear cells (PBMC), lymph nodes, spleen, bone marrow and cerebrospinal fluid. HBV entry into hepatocytes occurs by binding of the HBV preS1 surface protein to its specific receptor, the bile acid transporter, sodium taurocholate co-transporting polypeptide (NTCP)...
May 22, 2018: Biotechnology & Genetic Engineering Reviews
https://www.readbyqxmd.com/read/29772814/chronic-and-occult-hepatitis-b-virus-infection-in-pregnant-women-in-botswana
#2
Tshepiso Mbangiwa, Ishmael Kasvosve, Motswedi Anderson, Prisca K Thami, Wonderful T Choga, Austen Needleman, Bonolo B Phinius, Sikhulile Moyo, Melvin Leteane, Jean Leidner, Jason T Blackard, Gloria Mayondi, Betsy Kammerer, Rosemary M Musonda, Max Essex, Shahin Lockman, Simani Gaseitsiwe
The hepatitis B virus (HBV) is a global problem; however, the burden of HBV infection in pregnant women in Botswana is unknown. We sought to determine the prevalence of chronic and occult HBV infection in human immunodeficiency virus (HIV)-infected and -uninfected pregnant women in Botswana. Samples from 752 pregnant women were tested for hepatitis B surface antigen (HBsAg), and HBsAg-positive samples were tested for hepatitis B e antigen (HBeAg) and HBV DNA load. Samples that were HBsAg negative were screened for occult HBV infection by determining the HBV DNA load...
May 17, 2018: Genes
https://www.readbyqxmd.com/read/29762363/immunogenicity-and-safety-of-primary-and-booster-vaccinations-of-a-fully-liquid-dtap-ipv-hb-prp-t-hexavalent-vaccine-in-healthy-infants-and-toddlers-in-germany-and-the-czech-republic
#3
Roman Prymula, Dorothee Kieninger, Emmanuel Feroldi, Emilia Jordanov, Siham B'Chir, Xavier DaCosta
BACKGROUND: To support a fully liquid, diphtheria (D)-tetanus (T)-acellular pertussis (aP)-inactivated poliovirus (IPV)-hepatitis B (HB)-Haemophilus influenzae b (PRP-T) vaccine in Europe using a 2, 3, 4 month primary series and a booster at 11 to 15 months of age. METHODS: Phase III, randomized, observer-blind studies in Germany and the Czech Republic. Participants who had not received HB vaccine were randomized to a 2, 3, 4 month primary series of DTaP-IPV-HB-PRP-T (Group 1; N=266) or a reconstituted DTaPHB-IPV//PRP-T comparator (Group 2; N=263) and a booster of the same vaccine...
May 14, 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29761473/glucocorticosteroids-for-infants-with-biliary-atresia-following-kasai-portoenterostomy
#4
REVIEW
Athanasios Tyraskis, Christopher Parsons, Mark Davenport
BACKGROUND: Biliary atresia is a life-threatening disease characterised by progressive destruction of both intra- and extra-hepatic biliary ducts. The mainstay of treatment is Kasai portoenterostomy, as soon as the disease has been confirmed. Glucocorticosteroids are steroid hormones which act on the glucocorticoid receptor and have a range of metabolic and immunomodulatory effects. Glucocorticosteroids are used to improve the postoperative outcomes in infants who have undergone Kasai portoenterostomy...
May 14, 2018: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29757383/considerations-of-antiviral-treatment-to-interrupt-mother-to-child-transmission-of-hepatitis-b-virus-in-china
#5
Fuqiang Cui, Joseph Woodring, Polin Chan, Fujie Xu
Background: Treating high-risk women with antivirals in their third trimester is a promising intervention to further reduce perinatal transmission in neonates born to hepatitis B surface antigen positive [HBsAg(+)] mothers. Methods: We estimated the number of perinatal infections based on coverage and effectiveness of hepatitis B immunization. We compared cost-effectiveness of different approaches to identify high-risk women for antiviral treatment, by region and urban/rural residence...
May 10, 2018: International Journal of Epidemiology
https://www.readbyqxmd.com/read/29751176/il-4-mediates-the-delayed-neurobehavioral-impairments-induced-by-neonatal-hepatitis-b-vaccination-that-involves-the-down-regulation-of-the-il-4-receptor-in-the-hippocampus
#6
Xiao Wang, Junhua Yang, Zhiwei Xing, Hongyang Zhang, Yaru Wen, Fangfang Qi, Zejie Zuo, Jie Xu, Zhibin Yao
We have previously verified that neonatal hepatitis B vaccination induced hippocampal neuroinflammation and behavior impairments in mice. However, the exact mechanism of these effects remain unclear. In this study, we observed that neonatal hepatitis B vaccination induced an anti-inflammatory cytokine response lasting for 4-5 weeks in both the serum and the hippocampus, primarily indicated by elevated IL-4 levels. Three weeks after the vaccination schedule, however, hepatitis B vaccine (HBV)-mice showed delayed hippocampal neuroinflammation...
May 8, 2018: Cytokine
https://www.readbyqxmd.com/read/29745466/first-pass-cyp3a-mediated-metabolism-of-midazolam-in-the-gut-wall-and-liver-in-preterm-neonates
#7
Janneke M Brussee, Huixin Yu, Elke H J Krekels, Berend de Roos, Margreke J E Brill, Johannes N van den Anker, Amin Rostami-Hodjegan, Saskia N de Wildt, Catherijne A J Knibbe
To predict first-pass and systemic cytochrome P450 (CYP) 3A-mediated metabolism of midazolam in preterm neonates, a physiological population pharmacokinetic model was developed describing intestinal and hepatic midazolam clearance in preterm infants. On the basis of midazolam and 1-OH-midazolam concentrations from 37 preterm neonates (gestational age 26-34 weeks) receiving midazolam orally and/or via a 30-minute intravenous infusion, intrinsic clearance in the gut wall and liver were found to be very low, with lower values in the gut wall (0...
May 10, 2018: CPT: Pharmacometrics & Systems Pharmacology
https://www.readbyqxmd.com/read/29742467/three-decades-of-neonatal-vaccination-has-greatly-reduced-antenatal-prevalence-of-hepatitis-b-virus-infection-among-gravidae-covered-by-the-program
#8
Terence T Lao, Daljit S Sahota, Paul K S Chan
OBJECTIVES: To evaluate the impact of three decades of hepatitis B vaccination in infancy on antenatal prevalence of hepatitis B surface antigen (HBsAg) carriage in 93,134 Hong-Kong born gravidae managed in 1997-2015. METHODS: Annual prevalence of HBsAg carriage on routine antenatal screening was examined with respect to maternal year of birth in three periods i.e. pre-1983 (before availability of vaccination), 1983-88 (vaccination of infants born to HBsAg-carriers), and after 1988 (universal vaccination)...
May 6, 2018: Journal of Infection
https://www.readbyqxmd.com/read/29739700/catalysing-the-development-and-introduction-of-paediatric-drug-formulations-for-children-living-with-hiv-a-new-global-collaborative-framework-for-action
#9
Martina Penazzato, Melynda Watkins, Sébastien Morin, Linda Lewis, Fernando Pascual, Marissa Vicari, Janice Lee, Sally Hargreaves, Meg Doherty, George K Siberry
Progress in the development and introduction of paediatric formulations for key infectious diseases is poor in low-income and middle-income countries (LMICs). Although major steps have been made in the scale-up of antiretroviral medicines in LMICs, the development and deployment of formulations for infants and children is suboptimal. Of the children living with HIV globally (most in Africa), only 43% are receiving antiretroviral therapy (ART), many with suboptimal formulations. These shortfalls pose a series of challenges to meeting global treatment targets of 1·6 million children (aged 0-14 years) on ART by the end of 2018 (95% coverage) and to ensuring that 95% of those on ART are virologically suppressed...
May 2018: Lancet HIV
https://www.readbyqxmd.com/read/29735579/epidemiology-of-genotype-1-and-2-hepatitis-e-virus-infections
#10
Kenrad E Nelson, Alain B Labrique, Brittany L Kmush
Hepatitis E virus (HEV) genotypes 1 and 2 are responsible for the majority of acute viral hepatitis infections in endemic areas in South Asia and sub-Saharan Africa. In addition to frequent sporadic illnesses throughout the year, these viruses often cause large epidemics in association with monsoon rains in Asia or during humanitarian crises in Africa. Clinical hepatitis commonly involves adults more often than young children, with an overall mortality of ∼1%. However, the mortality among pregnant women is often 30% or higher...
May 7, 2018: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/29735323/sub-optimal-protection-against-past-hepatitis-b-virus-infection-where-subtype-mismatch-exists-between-vaccine-and-circulating-viral-genotype-in-northern-australia
#11
Benjamin C Cheah, Jane Davies, Gurmeet R Singh, Nicholas Wood, Kathy Jackson, Margaret Littlejohn, Belinda Davison, Peter McIntyre, Stephen Locarnini, Joshua S Davis, Steven Y C Tong
BACKGROUND: In Australia's Northern Territory, the hepatitis B virus (HBV) subgenotype A2 (subtype adw2) vaccine was introduced in 1988 for Indigenous infants. Subsequently, the circulating viral genotype has been identified as subgenotype C4 (subtype ayw3). We assessed HBV vaccine effectiveness (VE) in light of this subtype mismatch. METHODS: Participants of the Aboriginal Birth Cohort (ABC) study were recruited at birth (1987-1990), with HBV serology obtained at follow-up waves 3 (2005-2007) and 4 (2013-2015)...
May 4, 2018: Vaccine
https://www.readbyqxmd.com/read/29732038/persistence-of-immunity-to-hepatitis-b-vaccine-as-infants-17-years-earlier
#12
Zohreh Azarkar, Azadeh Ebrahimzadeh, Gholamreza Sharifzadeh, Masood Ziaee, Mohammad Fereidouni, Fatemeh Taheri
Background: In Iran since 1992, hepatitis B vaccination was a part of the national vaccination program. Hepatitis B vaccination is effective in the epidemiology of hepatitis B. The aim of this study was to evaluate the long - term persistence of immunity. Methods: This cross-sectional analytical study was conducted on children and adolescents aged between 6-18 years in Birjand, who received a three - dose hepatitis B vaccination in accordance with the national immunization program...
2018: Caspian Journal of Internal Medicine
https://www.readbyqxmd.com/read/29723483/breastfeeding-intention-compared-with-breastfeeding-postpartum-among-women-receiving-medication-assisted-treatment
#13
Nicole Yonke, Rebekah Maston, Sherry Weitzen, Lawrence Leeman
BACKGROUND: Women taking methadone or buprenorphine are encouraged to breastfeed if stable without polysubstance use. Research Aim: We aimed to determine the difference between stated intention to breastfeed prenatally in women taking methadone or buprenorphine compared with breastfeeding at discharge and 2 months postpartum. Secondary outcomes were determining whether breastfeeding was more common in women taking buprenorphine, in women without hepatitis C infection, and in women without a history of heroin use, and whether breastfeeding reduced the need for pharmacological treatment of neonatal opioid withdrawal syndrome...
April 1, 2018: Journal of Human Lactation: Official Journal of International Lactation Consultant Association
https://www.readbyqxmd.com/read/29720579/congenital-esophageal-atresia-and-microtia-in-a-newborn-secondary-to-mycophenolate-mofetil-exposure-during-pregnancy-a-case-report-and-review-of-the-literature
#14
Musaed Mohammed Alsebayel, Faisal Abdulrahman Abaalkhail, Faisal Mohammed Alsebayel, Dema A Alissa, Ahmed Hamdan Al-Jedai, Hussien Elsiesy
BACKGROUND Mycophenolate mofetil (MMF) is one of the most commonly prescribed drugs to prevent organ transplant rejection in combination with calcineurin inhibitors and steroids. It has a different toxicity profile than tacrolimus and cyclosporine.  Gastrointestinal tract disturbances are the most common adverse effects. The use of MMF in pregnant women, however, holds great risk of miscarriage and fetal development defects such as external ear malformation, ocular anomalies, cleft lip and palate, and abnormality of distal limbs, heart, esophagus, and kidneys...
May 3, 2018: American Journal of Case Reports
https://www.readbyqxmd.com/read/29720535/hepatitis-c-virus-screening-among-children-exposed-during-pregnancy
#15
Catherine A Chappell, Sharon L Hillier, David Crowe, Leslie A Meyn, Debra L Bogen, Elizabeth E Krans
OBJECTIVES: Because of the opioid epidemic, hepatitis C virus (HCV) infection is increasing among pregnant women, resulting in an increased risk of perinatal transmission and HCV infection among children. Our primary objectives in this study were to determine the prevalence of HCV among pregnant women and the frequency of pediatric HCV screening. METHODS: A population-based, retrospective cohort of pregnant women who delivered between 2006 and 2014 was identified and classified as HCV infected or HCV uninfected by billing codes...
May 2, 2018: Pediatrics
https://www.readbyqxmd.com/read/29720066/prevention-of-perinatal-hepatitis-b-virus-transmission-are-we-following-guidelines
#16
Peter G Markey, Helena A White, Alexander T Matthews, Charles R Strebor, Vicki Krause
It is recommended that infants born to women with hepatitis B infection should have serological review following completion of a four dose vaccination schedule. A review was undertaken on 102 neonates who received hepatitis B immunoglobulin to ascertain the proportion that were fully immunised and then followed up. Of the 66 infants for whom data were available, 65 (98.5%) had appropriately received four doses of hepatitis B vaccine in infancy and a further child had received three doses. Only 19/66 (29%; 95%CI: 18-41%) infants had documented follow-up serology results, one of whom was infected and one of whom was immune through clearance of infection...
September 1, 2017: Communicable Diseases Intelligence Quarterly Report
https://www.readbyqxmd.com/read/29712684/epidemiology-and-transmission-of-hepatitis-a-virus-and-hepatitis-e-virus-infections-in-the-united-states
#17
Megan G Hofmeister, Monique A Foster, Eyasu H Teshale
There are many similarities in the epidemiology and transmission of hepatitis A virus (HAV) and hepatitis E virus (HEV) genotype (gt)3 infections in the United States. Both viruses are enterically transmitted, although specific routes of transmission are more clearly established for HAV than for HEV: HAV is restricted to humans and primarily spread through the fecal-oral route, while HEV is zoonotic with poorly understood modes of transmission in the United States. New cases of HAV infection have decreased dramatically in the United States since infant vaccination was recommended in 1996...
April 30, 2018: Cold Spring Harbor Perspectives in Medicine
https://www.readbyqxmd.com/read/29706293/long-term-impact-of-childhood-hepatitis-b-vaccination-programs-on-prevalence-among-aboriginal-and-non-aboriginal-women-giving-birth-in-western-australia
#18
J Reekie, J M Kaldor, D B Mak, J Ward, B Donovan, J S Hocking, D Preen, B Liu
BACKGROUND/AIMS: To evaluate the long-term effect of infant and childhood hepatitis B (HBV) vaccination programs among birthing women in Western Australia. METHODS: A cohort of Western Australian women born from 1974 to 1995 was created using Birth Registrations and Electoral Roll records. They were linked to a perinatal register and notifiable diseases register to identify women having respectively their first births between 2000 and 2012 and diagnoses of HBV infections...
April 26, 2018: Vaccine
https://www.readbyqxmd.com/read/29702563/hepatitis-c-in-pregnancy
#19
Pratima Dibba, Rosann Cholankeril, Andrew A Li, Meera Patel, Mariam Fayek, Christy Dibble, Nnenna Okpara, Autumn Hines, Aijaz Ahmed
The prevalence of hepatitis C in pregnancy is as high as 3.6% in large cohorts. The prevalence of hepatitis C acquired by vertical transmission is 0.2% to 0.4% in the United States and Europe. Although screening is not recommended in the absence of certain risk factors, the importance of understanding hepatitis C in pregnancy lies in its association with adverse maternal and neonatal outcomes. There is potential for those infants infected by vertical transmission to develop chronic hepatitis C, cirrhosis or hepatocellular carcinoma...
April 27, 2018: Diseases (Basel)
https://www.readbyqxmd.com/read/29698570/interleukin-2-promotes-hepatic-regulatory-t-cell-responses-and-protects-from-biliary-fibrosis-in-murine-sclerosing-cholangitis
#20
Amy E Taylor, Alexandra N Carey, Ramesh Kudira, Celine S Lages, Tiffany Shi, Simon Lam, Rebekah Karns, Julia Simmons, Kumar Shanmukhappa, Maha Almanan, Claire A Chougnet, Alexander G Miethke
In the Mdr2 -/- mouse model low phospholipid bile instigates biliary epithelial injury, sterile inflammation, and fibrosis, thereby recapitulating disease mechanisms implicated in biliary atresia (BA) and primary sclerosing cholangitis. We hypothesize that T-lymphocytes contribute to the biliary injury and fibrosis in murine sclerosing cholangitis (SC) and that they are susceptible to suppression by regulatory T cells (Tregs). In juvenile Mdr2 -/- mice, intrahepatic CD8 lymphocytes were expanded and contraction of intrahepatic Tregs coincided with rising serum alanine transferase (ALT) and alkaline phosphatase (ALP) levels between days 14-30 of life...
April 26, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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