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https://www.readbyqxmd.com/read/29793206/effects-on-the-hepatic-transcriptome-of-chicken-embryos-in-ovo-exposed-to-phenobarbital
#1
Jiahua Guo, Shohei Ito, Hoa Thanh Nguyen, Kimika Yamamoto, Hisato Iwata
This work aimed at evaluating the toxic effects of in ovo exposure to phenobarbital (PB) and unveiling the mode of action by transcriptome analysis in the embryonic liver of a model avian species, chicken (Gallus gallus). Embryos were initially treated with saline or 1 μg PB /g egg at Hamburger Hamilton Stage (HHS) 1 (1st day), followed by 20 days of incubation to HHS 46. At 21st day, chicks that pipped successfully were euthanized and dissected for assessing the PB caused effects on phenotypes and the liver transcriptome in both genders...
May 21, 2018: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/29792895/pharmacogenomics-of-drug-induced-liver-injury-dili-molecular-biology-to-clinical-applications
#2
REVIEW
Kalaiyarasi Kaliyaperumal, Jane I Grove, Robin M Delahay, William J H Griffiths, Adam Duckworth, Guruprasad P Aithal
A number of drug-specific and host-related factors contribute to the development of drug-induced liver injury (DILI). Investigations focused on genetic susceptibility to DILI have advanced our understanding of the pathogenesis of this rare, yet potentially life-threatening adverse reaction. Candidate gene studies involving well-characterized patients with DILI and drug-exposed controls have identified single nucleotide polymorphisms (SNPs) affecting the metabolism and clearance of specific drugs and hence, influencing individual's susceptibility to DILI...
May 21, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29790143/-managing-the-adverse-effects-related-to-immune-checkpoint-inhibitors
#3
Hsiao-Hsuan Kuo, Wei-Wu Chen
Immune checkpoint inhibitors (ICIs) have become the new posterchild of cancer treatment in recent years largely due to their impressive clinical efficacy. Drugs targeting cytotoxic T- lymphocyte-associated antigen 4 (CTLA-4) and programmed cell death-1 (PD-1) antibodies, e.g., ipilimumab (Yervoy®), pembrolizumab (Keytruda®), and nivolumab (Opdivo®), reinvigorate cytotoxic T cells to kill cancer cells in patients. Despite the impressive clinical benefits, ICIs may induce immune-related adverse events (irAE) of the skin, gastrointestinal tract, liver, endocrine, and lung with a wide spectrum of severity...
June 2018: Hu Li za Zhi the Journal of Nursing
https://www.readbyqxmd.com/read/29789597/enhancer-of-zeste-homolog-2-catalysed-h3k27-trimethylation-plays-a-key-role-in-acute-on-chronic-liver-failure-via-tnf-mediated-pathway
#4
Tianhui Zhou, Ye Sun, Ming Li, Yongsen Ding, Rongkun Yin, Ziqiang Li, Qing Xie, Shisan Bao, Wei Cai
Acute-on-chronic liver failure is mainly due to host immunity self-destruction. The histone H3 lysine 27 (H3K27) trimethylating enzyme, enhancer of zeste homolog 2 (EZH2) mediates epigenetic silencing of gene expression and regulates immunity, also involves pathogenesis of several liver diseases. The current study was to determine the role of methyltransferase EZH2 and its catalysed H3K27 trimethylation (H3K27me3) in liver failure, and to further investigate the potential target for liver failure treatment...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29789495/apolipoprotein-e-and-atherosclerosis-from-lipoprotein-metabolism-to-microrna-control-of-inflammation
#5
REVIEW
Laura Bouchareychas, Robert L Raffai
Apolipoprotein (apo) E stands out among plasma apolipoproteins through its unprecedented ability to protect against atherosclerosis. Although best recognized for its ability to mediate plasma lipoprotein clearance in the liver and protect against macrophage foam cell formation, our recent understanding of the influence that apoE can exert to control atherosclerosis has significantly widened. Among apoE's newfound athero-protective properties include an ability to control exaggerated hematopoiesis, blood monocyte activation and aortic stiffening in mice with hyperlipidemia...
May 23, 2018: Journal of Cardiovascular Development and Disease
https://www.readbyqxmd.com/read/29789416/macrophage-derived-granulin-drives-resistance-to-immune-checkpoint-inhibition-in-metastatic-pancreatic-cancer
#6
Michael C Schmid, Valeria Quaranta, Carolyn Rainer, Sebastian Rune Nielsen, Meirion Llŷr Raymant, Muhammad S Ahmed, Dannielle D Engle, Arthur Taylor, Trish Murray, Fiona Campbell, Daniel H Palmer, David A Tuveson, Ainhoa Mielgo
The ability of disseminated cancer cells to evade the immune response is a critical step for efficient metastatic progression. Protection against an immune attack is often provided by the tumor microenvironment that suppresses and excludes cytotoxic CD8+ T cells. Pancreatic ductal adenocarcinoma (PDAC) is a highly aggressive metastatic disease with unmet needs, yet the immunoprotective role of the metastatic tumor microenvironment in pancreatic cancer is not completely understood. In this study we find that macrophage-derived granulin contributes to cytotoxic CD8+ T cell exclusion in metastatic livers...
May 22, 2018: Cancer Research
https://www.readbyqxmd.com/read/29789121/aire-is-not-essential-for-regulating-neuroinflammatory-disease-in-mice-transgenic-for-human-autoimmune-diseases-associated-mhc-class-ii-genes-hla-dr2b-and-hla-dr4
#7
Saisha A Nalawade, Niannian Ji, Itay Raphael, Andrew Pratt, Ellen Kraig, Thomas G Forsthuber
The human autoimmune disease-associated HLA alleles HLA-DR2b (DRB1*1501) and HLA-DR4 (DRB1*0401) are strongly linked to increased susceptibility for multiple sclerosis (MS) and rheumatoid arthritis (RA), respectively. The underlying mechanisms are not fully understood, but these MHC alleles may shape the repertoire of pathogenic T cells via central tolerance. The transcription factor autoimmune regulator (AIRE) promotes central T cell tolerance via ectopic expression of tissue-specific antigens (TSAs). Aire deficiency in humans causes autoimmune polyendocrinopathy syndrome type 1 (APS1), and Aire knockout mice (Aire-/- ) develop spontaneous autoimmune pathology characterized by multi-organ lymphocytic infiltrates...
May 14, 2018: Cellular Immunology
https://www.readbyqxmd.com/read/29788411/pathogenesis-of-duck-circovirus-genotype-1-in-experimentally-infected-pekin-ducks
#8
Y-T Hong, M Kang, H-K Jang
Ducks infected with duck circovirus (DuCV) exhibit feathering disorder, growth retardation, and low body weight. The virus can induce immunosuppression and increase rates of infection caused by other pathogens. The purpose of the present study was to investigate the pathogenesis of DuCV in experimentally infected Pekin ducks. At postmortem examination, gross lesions were observed in the immune organs including bursa of Fabricius (BF), thymus, and spleen. Hemorrhage, lymphocytic depletion, necrosis, and degeneration were observed in the bursal tissues by histological examination...
May 17, 2018: Poultry Science
https://www.readbyqxmd.com/read/29788077/irgm-gene-variants-modify-the-relationship-between-visceral-adipose-tissue-and-nafld-in-patients-with-crohn-s-disease
#9
Tracey G Simon, Kimberley W J Van Der Sloot, Samantha B Chin, Amit D Joshi, Paul Lochhead, Ashwin N Ananthakrishnan, Ramnik Xavier, Raymond T Chung, Hamed Khalili
Background: Nonalcoholic fatty liver disease (NAFLD) is an increasingly recognized comorbidity in Crohn's disease (CD), but the mechanisms are poorly understood. Autophagy is a highly conserved process regulating innate immunity that contributes to CD susceptibility. Emerging data suggest that variants in the autophagy-governing IRGM gene may contribute to the accumulation of visceral adipose tissue (VAT) and hepatic fat. Our objective was to characterize the relationship between VAT, IRGM gene variants, and NAFLD risk in patients with CD...
May 18, 2018: Inflammatory Bowel Diseases
https://www.readbyqxmd.com/read/29787886/monomicrobial-klebsiella-pneumoniae-necrotizing-fasciitis-an-emerging-life-threatening-entity
#10
REVIEW
G R Rahim, Neha Gupta, Puneet Maheshwari, M P Singh
BACKGROUND AND AIMS: Necrotizing fasciitis (NF) although rare, is a potentially fatal infection. Majority of cases being polymicrobial; a recent surge in monomicrobial NF caused by Klebsiella pneumoniae (KP-NF) has been reported. KP-NF recently accounted for an average of 16% amongst all pathogens with highest mortality rate of 60%. This review discusses the important aspects of KP-NF with additional note on implications of multidrug resistant infections. SOURCES: Literature was searched using PubMed...
May 19, 2018: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/29786548/designer-human-tissue-coming-to-a-lab-near-you
#11
David C Hay, Cliona O'Farrelly
Human pluripotent stem cells (PSCs) offer a scalable alternative to primary and transformed human tissue. PSCs include human embryonic stem cells, derived from the inner cell mass of blastocysts unsuitable for human implantation; and induced PSCs, generated by the reprogramming of somatic cells. Both cell types display the ability to self-renew and retain pluripotency, promising an unlimited supply of human somatic cells for biomedical application. A distinct advantage of using PSCs is the ability to select for genetic background, promising personalized modelling of human biology 'in a dish' or immune-matched cell-based therapies for the clinic...
July 5, 2018: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/29785403/immunotherapy-for-hepatocellular-carcinoma-current-advances-and-future-expectations
#12
REVIEW
Yingjun Xie, Yien Xiang, Jiyao Sheng, Dan Zhang, Xiaoxiao Yao, Yongsheng Yang, Xuewen Zhang
Primary liver cancer is a common kind of digestive cancers with high malignancy, causing 745,500 deaths each year. Hepatocellular carcinoma is the major pathological type of primary liver cancer. Traditional treatment methods for patients with hepatocellular carcinoma have shown poor efficacy in killing residual cancer cells for a long time. In recent years, tumor immunotherapy has emerged as a promising method owing to its safety and efficacy with respect to delaying the progression of advanced tumors and protecting postoperative patients against tumor relapse and metastasis...
2018: Journal of Immunology Research
https://www.readbyqxmd.com/read/29785006/the-era-of-immunogenomics-immunopharmacogenomics
#13
REVIEW
Makda Zewde, Kazuma Kiyotani, Jae-Hyun Park, Hua Fang, Kai Lee Yap, Poh Yin Yew, Houda Alachkar, Taigo Kato, Tu H Mai, Yuji Ikeda, Tatsuo Matsuda, Xiao Liu, Lili Ren, Boya Deng, Makiko Harada, Yusuke Nakamura
Although germline alterations and somatic mutations in disease cells have been extensively analyzed, molecular changes in immune cells associated with disease conditions have not been characterized in depth. It is clear that our immune system has a critical role in various biological and pathological conditions, such as infectious diseases, autoimmune diseases, drug-induced skin and liver toxicity, food allergy, and rejection of transplanted organs. The recent development of cancer immunotherapies, particularly drugs modulating the immune checkpoint molecules, has clearly demonstrated the importance of host immune cells in cancer treatments...
May 21, 2018: Journal of Human Genetics
https://www.readbyqxmd.com/read/29783985/the-doses-of-plasmid-backbone-plays-a-major-role-in-determining-the-hbv-clearance-in-hydrodynamic-injection-mouse-model
#14
Xian Wang, Jianmin Zhu, Yong Zhang, Yue Li, Tai Ma, Qun Li, Jiegou Xu, Long Xu
BACKGROUND: Hepatitis B virus (HBV) chronically infects approximately 350 million people worldwide, causing a major risk of liver disease and hepatocellular carcinoma (HCC). Many mouse models have been tried to establish HBV infection through injection with various HBV-containing plasmids. However, it is not well understood that different plasmids, all of which contain the similar HBV genome, even the same plasmids with different dose, results in opposite immune responses toward HBV. METHODS: In this study, we investigated the role of HBV-containing plasmid backbones and the HBcAg in determining the HBV persistence...
May 21, 2018: Virology Journal
https://www.readbyqxmd.com/read/29783855/iec-specific-igf1-promotes-the-expansion-of-intestinal-stem-cells-during-epithelial-regeneration-and-functions-on-the-intestinal-immune-homeostasis
#15
Yu Zheng, Yongli Song, Qi Han, Wenjie Liu, Jiuzhi Xu, Zhengquan Yu, Ran Zhang, Ning Li
It is well known that insulin-like growth factor 1 (IGF1) acts as a trophic factor in small intestine under both physiological and pathophysiological conditions. However, it still lacks direct in vivo evidence of the functions of intestinal epithelial cells (IECs)-specific IGF1 under both normal and pathological conditions. Using IEC-specific IGF1-knockout (cKO) mice and Lgr5-eGFP-CreERT mice, we demonstrate that IEC-specific IGF1 can enhance nutrient uptake, reduce protein catabolism and energy consumption, and promotes the proliferation and expansion of intestinal epithelial cells, including ISCs and intestinal secretory cells...
May 21, 2018: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29782025/injections-of-lipopolysaccharide-into-mice-to-mimic-entrance-of-microbial-derived-products-after-intestinal-barrier-breach
#16
Katarina Raduolovic, Rachel Mak'Anyengo, Berna Kaya, Anna Steinert, Jan Hendrik Niess
The intestinal epithelial barrier separates the host from the microbiota that is normally tolerated or ignored. The breach of this barrier results in the entrance of bacteria or bacteria-derived products into the host, accessing the host circulation and inner organs leading to the uncontrolled inflammation as observed in patients with inflammatory bowel disease (IBD), that are characterized by an increased intestinal epithelial permeability. To mimic the entrance of bacterial-derived compounds into the host, an endotoxemia model has been adopted in which lipopolysaccharide (LPS), a component of the outer cell wall of Gram-negative bacteria, were injected into mice...
May 2, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29778472/effects-of-ad-libitum-milk-replacer-feeding-and-butyrate-supplementation-on-behavior-immune-status-and-health-of-holstein-calves-in-the-postnatal-period
#17
C Gerbert, D Frieten, C Koch, G Dusel, K Eder, T Stefaniak, J Bajzert, P Jawor, A Tuchscherer, H M Hammon
Animal welfare in dairy calf husbandry depends on calf rearing and is probably improved by intensive milk feeding programs. In addition, butyrate supplementation in milk replacer (MR) stimulates postnatal growth and may affect the immune system in calves. We have investigated the combined effects of ad libitum MR feeding and butyrate supplementation on feeding behavior, health, and the immune responses in calves. Holstein calves (n = 64) were examined from birth until wk 11 of age. Calves received MR either ad libitum (Adl) or restrictively (Res) with (AdlB+, ResB+) or without (AdlB-, ResB-) 0...
May 16, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29778021/the-homing-of-human-umbilical-cord-derived-mesenchymal-stem-cells-and-the-subsequent-modulation-of-macrophage-polarization-in-type-2-diabetic-mice
#18
Yaqi Yin, Haojie Hao, Yu Cheng, Jieqing Gao, Jiejie Liu, Zongyan Xie, Qi Zhang, Li Zang, Weidong Han, Yiming Mu
Umbilical cord-derived mesenchymal stem cells (UC-MSCs), with both immunomodulatory and pro-regenerative properties, are promising for the treatment of type 2 diabetes mellitus (T2DM). As efficient cell therapy largely relies on appropriate homing to target tissues, knowing where and to what extent injected UC-MSCs have homed is critically important. However, bio-distribution data for UC-MSCs in T2DM subjects are extremely limited. Beneficial effects of UC-MSCs on T2DM subjects are associated with increased M2 macrophages, but no systemic evaluation of M2 macrophages has been performed in T2DM individuals...
May 15, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29777721/pentraxins-crp-i-and-crp-ii-are-post-translationally-deiminated-and-differ-in-tissue-specificity-in-cod-gadus-morhua-l-ontogeny
#19
Bergljót Magnadóttir, Polly Hayes, Berglind Gísladóttir, Birkir Þór Bragason, Mariya Hristova, Anthony P Nicholas, Sigríður Guðmundsdóttir, Sigrun Lange
Pentraxins are fluid phase pattern recognition molecules that form an important part of the innate immune defence and are conserved between fish and human. In Atlantic cod (Gadus morhua L.), two pentraxin-like proteins have been described, CRP-I and CRP-II. Here we show for the first time that these two CRP forms are post-translationally deiminated (an irreversible conversion of arginine to citrulline) and differ with respect to tissue specific localisation in cod ontogeny from 3 to 84 days post hatching. While both forms are expressed in liver, albeit at temporally differing levels, CRP-I shows a strong association with nervous tissue while CRP-II is strongly associated to mucosal tissues of gut and skin...
May 16, 2018: Developmental and Comparative Immunology
https://www.readbyqxmd.com/read/29776595/clinicopathologic-significance-of-lair-1-expression-in-hepatocellular-carcinoma
#20
Xiaojie Wu, Leyan Zhang, Jiadi Zhou, Luying Liu, Qiang Fu, Aili Fu, Xiaoying Feng, Rui Xin, Hongrui Liu, Yong Gao, Jiangnan Xue
AIM: Leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1) is an immune inhibitory receptor which is expressed within most types of hematopoietic cells and negatively regulates immune responses. Recently, we found LAIR-1 expression to be present within tumors of nonhematopoietic lineages. However, the roles of LAIR-1 in hepatocellular carcinoma (HCC) have yet to be examined. The purpose of this study was to investigate the expression of LAIR-1 in HCC tissue and assess its clinical significance at this site...
April 30, 2018: Current Problems in Cancer
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