keyword
MENU ▼
Read by QxMD icon Read
search

Hepatitis B genetics

keyword
https://www.readbyqxmd.com/read/28544258/incidence-and-risk-factors-for-non-alcoholic-fatty-liver-disease-a-7-year-follow-up-study-among-urban-adult-sri-lankans
#1
Madunil Anuk Niriella, Arunasalam Pathmeswaran, Shamila Thivanshi De Silva, Anuradhani Kasturiratna, Ruwan Perera, Chamila Erandaka Subasinghe, Kuleesha Kodisinghe, Chathura Piyaratna, Vithiya Rishikesawan, Anuradha Supun Dassanayaka, Arjuna Priyadarshin De Silva, Rajitha Wickramasinghe, Fumihiko Takeuchi, Norihiro Kato, Hithanadura Janaka de Silva
BACKGROUND: This study investigated incidence and risk factors for NAFLD among an adult cohort with 7-years follow-up. METHODS: The study population (age-stratified random sampling, Ragama MOH area) was screened initially in 2007 (aged 35-64 years) and re-evaluated in 2014 (aged 42-71 years). On both occasions assessed by structured interview, anthropometric measurements, liver ultrasound, biochemical and serological tests. NAFLD was diagnosed on ultrasound criteria, safe alcohol consumption and absence of hepatitis B/C markers...
May 19, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28543911/polymorphism-of-tlr5-rs5744174-is-associated-with-disease-progression-in-chinese-patients-with-chronic-hbv-infection
#2
Lina Cao, Tong Zhang, Junping Zhu, Aixin Li, Kai Zheng, Nan Zhang, Bin Su, Wei Xia, Hao Wu, Ning Li, Qiushui He
Toll-like receptors (TLRs) play a crucial role in innate and adaptive immunity, protecting the host from viral pathogens. Studies have implicated that TLR5 is associated with various diseases such as autoimmune and inflammation related diseases. However, little is known about the relationship between TLR5 and hepatitis B virus (HBV) infection. We studied the effect of TLR5 gene polymorphisms on susceptibility to and disease progression of chronic hepatitis B (CHB) infection in Chinese. Blood samples were taken from 636 patients with CHB, HBV-related liver cirrhosis (LC) or hepatocellular carcinoma (HCC) and 273 controls...
May 25, 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28543567/tgr5-contributes-to-hepatic-cystogenesis-in-rodents-with-polycystic-liver-diseases-via-camp-g%C3%AE-s-signaling
#3
Tatyana V Masyuk, Anatoliy I Masyuk, Maria Lorenzo Pisarello, Brynn N Howard, Bing Q Huang, Pui-Yuen Lee, Xavier Fung, Eduard Sergienko, Robert J Ardesky, Thomas Dy Chung, Anthony B Pinkerton, Nicholas F LaRusso
Hepatic cystogenesis in Polycystic Liver Disease (PLD) is associated with increased levels of cAMP in cholangiocytes lining liver cysts. TGR5, a G protein-coupled bile acid receptor, is linked to cAMP and expressed in cholangiocytes. Therefore, we hypothesized that TGR5 might contribute to disease progression. We examined expression of TGR5 and Gα proteins in cultured cholangiocytes and in livers of animal models and humans with PLD. In vitro, we assessed cholangiocyte proliferation, cAMP levels, and cyst growth in response to: (i) TGR5 agonists [taurolithocholic acid (TLCA), oleanolic acid (OA) and two synthetic compounds]; (ii) a novel TGR5 antagonist (SBI-115); and (iii) a combination of SBI-115 and pasireotide, a somatostatin receptor (SSTR) analog...
May 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/28540293/altered-erythropoiesis-in-mouse-models-of-type-3-hemochromatosis
#4
R M Pellegrino, F Riondato, L Ferbo, M Boero, A Palmieri, L Osella, P Pollicino, B Miniscalco, G Saglio, A Roetto
Type 3 haemochromatosis (HFE3) is a rare genetic iron overload disease which ultimately lead to compromised organs functioning. HFE3 is caused by mutations in transferrin receptor 2 (TFR2) gene that codes for two main isoforms (Tfr2α and Tfr2β). Tfr2α is one of the hepatic regulators of iron inhibitor hepcidin. Tfr2β is an intracellular isoform of the protein involved in the regulation of iron levels in reticuloendothelial cells. It has been recently demonstrated that Tfr2 is also involved in erythropoiesis...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28537543/molecular-epidemiology-of-hepatitis-b-virus-infection-in-tanzania
#5
Joseph C Forbi, Michael Dillon, Michael A Purdy, Bakary S Drammeh, Alexandra Tejada-Strop, Daniel McGovern, Guo-Liang Xia, Yulin Lin, Lilia M Ganova-Raeva, David S Campo, Hong Thai, Gilberto Vaughan, Dunstan Haule, Regina P Kutaga, Sridhar V Basavaraju, Saleem Kamili, Yury E Khudyakov
Despite the significant public health problems associated with hepatitis B virus (HBV) in sub-Saharan Africa, many countries in this region do not have systematic HBV surveillance or genetic information on HBV circulating locally. Here, we report on the genetic characterization of 772 HBV strains from Tanzania. Phylogenetic analysis of the S-gene sequences showed prevalence of HBV genotype A (HBV/A, n=671, 86.9 %), followed by genotypes D (HBV/D, n=95, 12.3 %) and E (HBV/E, n=6, 0.8 %). All HBV/A sequences were further classified into subtype A1, while the HBV/D sequences were assigned to a new cluster...
May 25, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28529542/frequency-and-geographic-distribution-of-tert-promoter-mutations-in-primary-hepatocellular-carcinoma
#6
REVIEW
Francesca Pezzuto, Luigi Buonaguro, Franco M Buonaguro, Maria Lina Tornesello
Primary hepatocellular carcinoma (HCC) mainly develops in subjects chronically infected with hepatitis B (HBV) and C (HCV) viruses through a multistep process characterized by the accumulation of genetic alterations in the human genome. Nucleotide changes in coding regions (i.e. TP53, CTNNB1, ARID1A and ARID2) as well as in non-coding regions (i.e. TERT promoter) are considered cancer drivers for HCC development with variable frequencies in different geographic regions depending on the etiology and environmental factors...
2017: Infectious Agents and Cancer
https://www.readbyqxmd.com/read/28527665/therapeutic-editing-of-hepatocyte-genome-in-vivo
#7
REVIEW
Marina Ruiz de Galarreta, Amaia Lujambio
The recent development of gene editing platforms enables making precise changes in the genome of eukaryotic cells. Programmable nucleases, such as meganucleases, zinc finger nucleases (ZFNs), transcription activator-like effector nucleases (TALENs), and clustered regularly interspaced short palindromic repeat (CRISPR)-associated nucleases, have revolutionized the way research is conducted as they facilitate the rapid production of mutant or knock-out cellular and animal models. These same genetic tools can potentially be applied to cure or alleviate a variety of diseases, including genetic diseases that lack an efficient therapy...
May 17, 2017: Journal of Hepatology
https://www.readbyqxmd.com/read/28515345/genetic-factors-associated-with-risk-of-metabolic-syndrome-and-hepatocellular-carcinoma
#8
REVIEW
Ranran Tang, Heng Liu, Yingdi Yuan, Kaipeng Xie, Pengfei Xu, Xiaoyun Liu, Juan Wen
Although the metabolic syndrome is a commonplace topic, its potential threats to public health is a problem that cannot be neglected. As the living conditions improved significantly over the past few years, the morbidity of metabolic syndrome has also steadily risen, and the onset age is becoming younger. The hepatocellular carcinoma (HCC), is one of the most prevalent life-threatening human cancers worldwide, incidence of which is also on the rise, gradually occupied the top of the list associated with metabolic syndrome related complication...
May 23, 2017: Oncotarget
https://www.readbyqxmd.com/read/28514750/epigenome-wide-association-study-in-hepatocellular-carcinoma-identification-of-stochastic-epigenetic-mutations-through-an-innovative-statistical-approach
#9
REVIEW
Davide Gentilini, Stefania Scala, Germano Gaudenzi, Paolo Garagnani, Miriam Capri, Matteo Cescon, Gian Luca Grazi, Maria Giulia Bacalini, Serena Pisoni, Alessandra Dicitore, Luisa Circelli, Sara Santagata, Francesco Izzo, Anna Maria Di Blasio, Luca Persani, Claudio Franceschi, Giovanni Vitale
Hepatocellular carcinoma (HCC) results from accumulation of both genetic and epigenetic alterations. We investigated the genome-wide DNA methylation profile in 69 pairs of HCC and adjacent non-cancerous liver tissues using the Infinium HumanMethylation 450K BeadChip array. An innovative analytical approach has been adopted to identify Stochastic Epigenetic Mutations (SEMs) in HCC.HCC and peritumoral tissues showed a different epigenetic profile, mainly characterized by loss of DNA methylation in HCC. Total number of SEMs was significantly higher in HCC tumor (median: 77,370) than in peritumoral (median: 5,656) tissues and correlated with tumor grade...
April 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/28510280/modelling-the-iatrogenic-pancreatic-cancer-risk-after-islet-autotransplantation-in-mouse
#10
E Dugnani, V Pasquale, D Liberati, A Citro, E Cantarelli, S Pellegrini, P Marra, T Canu, G Balzano, M Scavini, A Esposito, C Doglioni, L Piemonti
Iatrogenic pancreatic cancer metastasis after islet infusion is a potential risk of islet autotransplantation performed after pancreatectomy. To model this risk islets and/or pancreatic exocrine clusters obtained from a genetically engineered mouse model for pancreatic ductal adenocarcinoma (the LSL-Kras(G12D/+) ;LSL-Trp53(R172H/+) ;Pdx-1-Cre, termed KPC mouse) were transplanted via the portal vein in syngeneic wild type (WT) severely diabetic recipients in the following treatment groups: group A (n=11) received KPC exocrine clusters in volume equal to 250 equivalent islets (IEQs); group B (n=12) received 250 WT IEQs mixed with KPC exocrine clusters (1:1 volume ratio); group C (n=5) received 250 KPC IEQs and group D (n=7) received 250 wild type IEQs...
May 16, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28494793/real-time-pcr-assays-for-hepatitis-b-virus-dna-quantification-may-require-two-different-targets
#11
Chao Liu, Le Chang, Tingting Jia, Fei Guo, Lu Zhang, Huimin Ji, Junpeng Zhao, Lunan Wang
BACKGROUND: Quantification Hepatitis B virus (HBV) DNA plays a critical role in the management of chronic HBV infections. However, HBV is a DNA virus with high levels of genetic variation, and drug-resistant mutations have emerged with the use of antiviral drugs. If a mutation caused a sequence mismatched in the primer or probe of a commercial DNA quantification kit, this would lead to an underestimation of the viral load of the sample. The aim of this study was to determine whether commercial kits, which use only one pair of primers and a single probe, accurately quantify the HBV DNA levels and to develop an improved duplex real-time PCR assay...
May 12, 2017: Virology Journal
https://www.readbyqxmd.com/read/28482184/distribution-of-hbv-subgenotypes-in-ribeir%C3%A3-o-preto-southeastern-brazil-a-region-with-history-of-intense-italian-immigration
#12
Silvana Gama Florencio Chachá, Michele Soares Gomes-Gouvêa, Fernanda de Mello Malta, Sandro da Costa Ferreira, Márcia Guimarães Villanova, Fernanda Fernandes Souza, Andreza Correa Teixeira, Afonso Dinis da Costa Passos, João Renato Rebello Pinho, Ana de Lourdes Candolo Martinelli
Hepatitis B virus (HBV) is distributed worldwide, with geographical variations regarding prevalence of the different genotypes. The aim of this study was to determine the HBV genotypes and subgenotypes circulating in Southeast Brazil and compare the genetic sequences found with HBV sequences previously described in the world. Sequences from 166 chronic HBV carriers were analyzed using the fragment constituted by 1306 base pairs comprising surface and polymerase regions of the HBV genome. The sequences obtained were submitted to phylogenetic analysis...
May 5, 2017: Brazilian Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28480064/systemic-therapy-for-advanced-hepatocellular-carcinoma-an-update
#13
REVIEW
Jasmin Radhika Desai, Sebastian Ochoa, Petra Alexandra Prins, Aiwu Ruth He
Advanced hepatocellular carcinoma (HCC) is a deadly disease with few systemic therapeutic options. Sorafenib is the only agent to be FDA approved for the first-line treatment of patients with HCC. This drug increases overall survival (OS) by 3 months compared with placebo (10.7 months with sorafenib vs. 7.7 months with placebo). More recently, the RESORCE trial demonstrated efficacy of regorafenib in the second-line treatment of HCC: OS was increased from 7.8 months with placebo to 10.6 months with regorafenib after patients experienced disease progression on sorafenib...
April 2017: Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/28475811/ablation-of-hepatic-production-of-the-acid-labile-subunit-in-the-bovine-gh-transgenic-mice-effects-on-organ-and-skeletal-growth
#14
Zhongbo Liu, Tianzhen Han, Shannon Fishman, James Butler, Tracy Zimmermann, Frederic Tremblay, Carole Harbison, Nidhi Agrawal, John J Kopchick, Mitchell B Schaffler, Shoshana Yakar
Growth hormone (GH) and insulin like growth factor-1 (IGF-1) are anabolic hormones that facilitate somatic and skeletal growth, and regulate metabolism via endocrine and autocrine/paracrine mechanisms. We hypothesized that excess tissue production of GH will protect skeletal growth and integrity in states of reductions in serum IGF-1 levels. To test our hypothesis we used the bovine GH (bGH) transgenic mice as a model of GH hypersecretion and ablated the liver-derived acid labile subunit (ALS), which stabilizes IGF-1 complexes with IGF-binding protein-3 (IGFBP-3) and -5 in circulation...
May 4, 2017: Endocrinology
https://www.readbyqxmd.com/read/28473467/hepatic-protein-phosphatase-1-regulatory-subunit-3b-ppp1r3b-promotes-hepatic-glycogen-synthesis-and-thereby-regulates-fasting-energy-homeostasis
#15
Minal B Mehta, Swapnil V Shewale, Raymond N Sequeira, John S Millar, Nicholas J Hand, Daniel J Rader
Maintenance of whole-body glucose homeostasis is critical to glycemic function. Genetic variants mapping to chromosome 8p23.1 in genome-wide association studies have been linked to glycemic traits in humans. The gene of known function closest to the mapped region, PPP1R3B (protein phosphatase 1 regulatory subunit 3B), encodes a protein (GL) that regulates glycogen metabolism in the liver. We therefore sought to test the hypothesis that hepatic PPP1R3B is associated with glycemic traits. We generated mice with either liver-specific deletion (Ppp1r3bΔhep) or liver-specific overexpression of Ppp1r3b...
May 4, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28472081/hbv-dna-genome-co-transfection-procedure-for-the-evaluation-of-relative-fitness
#16
Ina Sevic, Maria Mora Gonzalez Lopez Ledesma, Diego Martin Flichman, Rodolfo Hector Campos
Hepatitis B virus (HBV) has a high mutation rate and exists as a mixture of genetically different but closely related variants. We present a HBV DNA co-transfection fitness assay and use it to evaluate the relative fitness of different HBV variants in two scenarios: seroconversion process and occupation of an ecological niche. In the seroconversion experiment, subgenotype D1 (sgtD1) deletion (1763-1770) had significantly lower fitness comparing with both sgtD1 wild type and sgtD1mut G1896A, while, in the case of occupation of ecological niche experiment, the results showed the same relative fitness between all of the genotype combinations, except F1b-F4...
2017: PloS One
https://www.readbyqxmd.com/read/28472040/ultra-deep-sequencing-reveals-high-prevalence-and-broad-structural-diversity-of-hepatitis-b-surface-antigen-mutations-in-a-global-population
#17
Mikael Gencay, Kirsten Hübner, Peter Gohl, Anja Seffner, Michael Weizenegger, Dionysios Neofytos, Richard Batrla, Andreas Woeste, Hyon-Suk Kim, Gaston Westergaard, Christine Reinsch, Eva Brill, Pham Thi Thu Thuy, Bui Huu Hoang, Mark Sonderup, C Wendy Spearman, Stephan Pabinger, Jérémie Gautier, Giuseppina Brancaccio, Massimo Fasano, Teresa Santantonio, Giovanni B Gaeta, Markus Nauck, Wolfgang E Kaminski
The diversity of the hepatitis B surface antigen (HBsAg) has a significant impact on the performance of diagnostic screening tests and the clinical outcome of hepatitis B infection. Neutralizing or diagnostic antibodies against the HBsAg are directed towards its highly conserved major hydrophilic region (MHR), in particular towards its "a" determinant subdomain. Here, we explored, on a global scale, the genetic diversity of the HBsAg MHR in a large, multi-ethnic cohort of randomly selected subjects with HBV infection from four continents...
2017: PloS One
https://www.readbyqxmd.com/read/28460646/evaluation-of-engineered-aav-capsids-for-hepatic-factor-ix-gene-transfer-in-murine-and-canine-models
#18
David M Markusic, Timothy C Nichols, Elizabeth P Merricks, Brett Palaschak, Irene Zolotukhin, Damien Marsic, Sergei Zolotukhin, Arun Srivastava, Roland W Herzog
BACKGROUND: Adeno-associated virus (AAV) gene therapy vectors have shown the best outcomes in human clinical studies for the treatment of genetic diseases such as hemophilia. However, these pivotal investigations have also identified several challenges. For example, high vector doses are often used for hepatic gene transfer, and cytotoxic T lymphocyte responses against viral capsid may occur. Therefore, achieving therapy at reduced vector doses and other strategies to reduce capsid antigen presentation are desirable...
May 1, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28460156/genetic-and-phylogenic-characterisation-of-hepatitis-b-virus-in-the-eastern-part-of-the-democratic-republic-of-congo
#19
Tony Akilimali Shindano, Yves Horsmans, Benoit Mukadi Kabamba
Hepatitis B virus (HBV) genotypes show a distinctive geographical distribution worldwide and genotypes A, D and E are the most frequently found in Africa. There are only limited studies on HBV genotype distribution in Democratic Republic of Congo (DRC), all done in the western part showing a vast majority of genotype E. In our study, HBV strains from South Kivu, an eastern province of the DRC, were analysed. Sequencing of 41 serum samples from HBV infected patients revealed strains of genotype A in 40/41 (97...
April 29, 2017: Journal of Medical Virology
https://www.readbyqxmd.com/read/28457383/kidney-transplantation-in-alstr%C3%A3-m-syndrome-case-report
#20
L Poli, G Arroyo, M Garofalo, E Choppin de Janvry, G Intini, A Saracino, R Pretagostini, F Della Pietra, P B Berloco
The Alström syndrome is a rare genetic disorder, inherited in an autosomal recessive manner. It has recently been classified as a ciliopathic disorder. Alström syndrome is a multiorgan pathology characterized by cone-rod dystrophy, hearing loss, childhood truncal obesity, insulin resistance and hyperinsulinemia, type 2 diabetes mellitus, dyslipidemia, short stature in adulthood, hypothyroidism, hypogonadism, dilated or restrictive cardiomyopathy, and progressive pulmonary, hepatic, and renal dysfunction. End-stage renal disease can occur as early as the late teens and is the leading cause of death...
May 2017: Transplantation Proceedings
keyword
keyword
47451
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"