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https://www.readbyqxmd.com/read/28092402/%C3%AE-%C3%AE-t-cells-are-indispensable-for-il-23-mediated-protection-against-cona-induced-hepatitis-in-hepatitis-b-virus-transgenic-mice
#1
Ziyu Meng, Jingya Wang, Yifang Yuan, Guangchao Cao, Shuobing Fan, Chao Gao, Li Wang, Zheng Li, Xiaoli Wu, Zhenzhou Wu, Liqing Zhao, Zhinan Yin
Hepatitis B virus surface antigen (HBsAg) carriers are highly susceptible to liver injury triggered by environmental biochemical stimulation. Previously, we have reported an inverse correlation between γδT cells and liver damage in patients with HBV. However, whether γδT cells play a role in regulating the hypersensitivity of HBsAg carriers to biochemical stimulation-induced hepatitis is unknown. In this study, using hepatitis B virus transgenic (HBs-Tg) and HBs-Tg-TCRδ(-/-) mice, we found that mice genetically deficient in γδT cells exhibited more severe liver damage upon ConcanavalinA (ConA) treatment, as indicated by substantially higher serum alanine aminotransferase (ALT) levels, further elevated IFN-γ levels and more extensive necrosis...
January 16, 2017: Immunology
https://www.readbyqxmd.com/read/28089873/patterns-of-immune-development-in-urban-preschoolers-with-recurrent-wheeze-and-or-atopy
#2
James E Gern, Agustin Calatroni, Katy F Jaffee, Henry Lynn, Amy Dresen, William W Cruikshank, Howard M Lederman, Hugh A Sampson, Wayne Shreffler, Leonard B Bacharier, Peter J Gergen, Diane R Gold, Meyer Kattan, George T O'Connor, Megan T Sandel, Robert A Wood, Gordon R Bloomberg
BACKGROUND: Disadvantaged urban children have high rates of allergic diseases and wheezing, which are diseases associated with Type 2-biased immunity. OBJECTIVE: To determine whether environmental exposures in early life influence cytokine responses which affect the development of recurrent wheezing illnesses and allergic sensitization. METHODS: A birth cohort of 560 urban families was recruited from neighborhoods with high rates of poverty, and 467 (83%) children were followed until 3 years of age...
January 13, 2017: Journal of Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28089638/the-effects-of-acute-psychological-stress-on-circulating-and-stimulated-inflammatory-markers-a-systematic-review-and-meta-analysis
#3
REVIEW
Anna L Marsland, Catherine Walsh, Kimberly Lockwood, Neha A John-Henderson
Inflammatory reactivity to acute laboratory stress is thought to reflect individual differences in responsivity to environmental stressors and may confer future health risk. To characterize this response, we conducted a meta-analysis of 34 studies that measured circulating inflammatory markers and 15 studies that measured stimulated production of inflammatory markers before and after exposure to laboratory challenge. Results showed significant stress-related increases in circulating interleukin (IL)-1β (d = 0...
January 12, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/28088612/alterations-in-cytokine-gene-expression-profile-in-colon-mucosa-of-inflammatory-bowel-disease-patients-on-different-therapeutic-regimens
#4
Tsvetelina Velikova, Dobroslav Kyurkchiev, Zoya Spassova, Iliya Karakolev, Ekaterina Ivanova-Todorova, Iskra Altankova, Spaska Stanilova
Inflammatory bowel disease (IBD) is assumed to be caused by genetic and environmental factors that interact together in promoting intestinal immune dysregulation where cytokines have validated role. However, the underlying intimate mechanisms in the human IBD involving cytokines still needs to be supplemented especially in the clinical context. The aim of this study was to investigate the expression of some inflammatory and regulatory cytokines (IL-17A, IL-23, IL-6, TGFβ1, and IL-10) as well as of the transcription factor FoxP3 in mucosal samples of IBD and non-IBD patients...
January 12, 2017: Cytokine
https://www.readbyqxmd.com/read/28071720/polychlorinated-biphenyls-target-notch-dll-and-vegf-r2-in-the-mouse-placenta-and-human-trophoblast-cell-lines-for-their-anti-angiogenic-effects
#5
Satyan Kalkunte, Zheping Huang, Eliana Lippe, Sunil Kumar, Larry W Robertson, Surendra Sharma
The intrauterine environment is particularly vulnerable to environmental exposures. We previously established a mouse model that provided evidence for pregnancy complications and placental anti-angiogenesis in response to Aroclor 1254 (A-1254), a mixture of polychlorinated biphenyls (PCBs). Importantly, these effects were observed in IL-10(-/-), but not wild type, mice, suggesting that IL-10 deficiency predisposes to pregnancy disruptive effects of environmental toxicants. However, the mechanisms by which PCBs cause anti-angiogenic effects are unclear...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070266/serum-and-cerebrospinal-fluid-immune-mediators-in-children-with-autistic-disorder-a-longitudinal-study
#6
Carlos A Pardo, Cristan A Farmer, Audrey Thurm, Fatma M Shebl, Jorjetta Ilieva, Simran Kalra, Susan Swedo
BACKGROUND: The causes of autism likely involve genetic and environmental factors that influence neurobiological changes and the neurological and behavioral features of the disorder. Immune factors and inflammation are hypothesized pathogenic influences, but have not been examined longitudinally. METHODS: In a cohort of 104 participants with autism, we performed an assessment of immune mediators such as cytokines, chemokines, or growth factors in serum and cerebrospinal fluid (n = 67) to determine potential influences of such mediators in autism...
2017: Molecular Autism
https://www.readbyqxmd.com/read/28069244/ultrasonic-irradiation-assisted-synthesis-of-bi2s3-nanoparticles-in-aqueous-ionic-liquid-at-ambient-condition
#7
Salomé M de la Parra-Arciniega, Nora A Garcia-Gomez, Lorena L Garza-Tovar, Domingo I García-Gutiérrez, Eduardo M Sánchez
In this work, an easy, fast and environmentally friendly method to obtain Bi2S3 nanostructures with sphere-like morphology is introduced. The promising material was successfully synthesized by a sonochemical route in 20% 1-ethyl-3-methylimidazolium ethyl sulfate [EMIM][EtSO4] ionic liquid solution (IL). Morphological studies by electron microscopy (SEM and TEM) show that the use of IL in the synthesis of Bi2S3 favors the formation of nanocrystals non-agglomerated. Micro Raman and energy dispersive X-ray spectroscopy (EDXS) were used to determine the composition and purity of the synthesized material...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28063905/trichloroethylene-induced-formic-aciduria-in-the-male-c57-bl-6-mouse
#8
Edward A Lock, Paul Keane, Philip H Rowe, John R Foster, Daniel Antoine, Christopher M Morris
1, 1, 2-Trichloroethylene (TCE) is of environmental concern, due to evaporation while handling, chemical processing and leakage from chemical waste sites, leading to its contamination of ground water and air. For several decades there has been issues about possible long term health effects of TCE but recently the International Agency for Research on Cancer (IARC) and the US Environmental Protection Agency classified TCE as a human carcinogen. Links having been established between occupational exposures and kidney cancer and possible links to non-Hodgkin lymphoma and liver cancer, but there is more still more to learn...
January 4, 2017: Toxicology
https://www.readbyqxmd.com/read/28061846/map4k4-and-il-6-th17-cells-play-important-roles-in-non-obese-type-2-diabetes
#9
REVIEW
Huai-Chia Chuang, Tse-Hua Tan
Obesity is a causal factor of type 2 diabetes (T2D); however, people without obesity (including lean, normal weight, or overweight) may still develop T2D. Non-obese T2D is prevalent in Asia and also frequently occurs in Europe. Recently, multiple evidences oppose the notion that either obesity or central obesity (visceral fat accumulation) promotes non-obese T2D. Several factors such as inflammation and environmental factors contribute to non-obese T2D. According to the data derived from gene knockout mice and T2D clinical samples in Asia and Europe, the pathogenesis of non-obese T2D has been unveiled recently...
January 7, 2017: Journal of Biomedical Science
https://www.readbyqxmd.com/read/28059602/sumoylation-of-klf4-promotes-il-4-induced-macrophage-m2-polarization
#10
Kezhou Wang, Wei Zhou, Qi Cai, Jinke Cheng, Rong Cai, Rong Xing
Macrophages, in response to different environmental cues, undergo the classical polarization (M1 macrophages) as well as the alternative polarization (M2 macrophages) that involve the functions of stimulus-specific transcription factors. Kruppel-like factor 4 (KLF4), a member of a subfamily of the zinc-finger class of DNA-binding transcription factors, plays as a critical regulator of macrophage polarization. KLF4 has been reported as a SUMOylated protein. In this study, we showed that SUMOylation of KLF4, is induced by IL-4 treatment in macrophages...
January 6, 2017: Cell Cycle
https://www.readbyqxmd.com/read/28049834/aquaporin-3-mediates-hydrogen-peroxide-dependent-responses-to-environmental-stress-in-colonic-epithelia
#11
Jay R Thiagarajah, Jeffrey Chang, Jeremy A Goettel, Alan S Verkman, Wayne I Lencer
The colonic epithelium provides an essential barrier against the environment that is critical for protecting the body and controlling inflammation. In response to injury or gut microbes, colonic epithelial cells produce extracellular hydrogen peroxide (H2O2), which acts as a potent signaling molecule affecting barrier function and host defense. In humans, impaired regulation of H2O2 in the intestine has been associated with early-onset inflammatory bowel disease and colon cancer. Here, we show that signal transduction by H2O2 depends on entry into the cell by transit through aquaporin-3 (AQP3), a plasma membrane H2O2-conducting channel...
January 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28041778/impact-of-surfactant-type-for-ionic-liquid-pretreatment-on-enhancing-delignification-of-rice-straw
#12
Ken-Lin Chang, Xi-Mei Chen, Xiao-Qin Wang, Ye-Ju Han, Laddawan Potprommanee, Jing-Yong Liu, Yu-Ling Liao, Xun-An Ning, Shui-Yu Sun, Qing Huang
This work describes an environmentally friendly method for pretreating rice straw by using 1-Allyl-3-methylimidazolium chloride ([AMIM]Cl) as an ionic liquid (IL) assisted by surfactants. The impacts of surfactant type (including nonionic-, anionic-, cationic- and bio-surfactant) on the ionic liquid pretreatment were investigated. The bio-surfactant+IL-pretreated rice straw showed significant lignin removal (26.14%) and exhibited higher cellulose conversion (36.21%) than the untreated (16.16%) rice straw. The cellulose conversion of the rice straw pretreated with bio-surfactant+IL was the highest and the lowest was observed for pretreated with cationic-surfactant+IL...
March 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28040536/th9-cells-and-il-9-in-autoimmune-disorders-pathogenesis-and-therapeutic-potentials
#13
REVIEW
Yaxiong Deng, Zijun Wang, Christopher Chang, Liwei Lu, Chak Sing Lau, Qianjin Lu
Naïve CD4(+) T cells are pleiotropically divided into various T helper (Th) cell subsets, according to their pivotal roles in the regulation of immune responses. The differentiation of Th9 cells, an interleukin (IL)-9 producing subset, can be impacted by specific environmental cues, co-stimulation with transforming growth factor β (TGF-β) and IL-4, and other regulatory factors. Although IL-9 has been recognized as a classical Th2-related cytokine, recent studies have indicated that IL-9-producing cells contribute to a group of autoimmune disorders including systemic lupus erythematosus (SLE), multiple sclerosis (MS), inflammatory bowel diseases (IBD), rheumatoid arthritis (RA) and psoriasis...
December 28, 2016: Human Immunology
https://www.readbyqxmd.com/read/28036260/effects-of-alcohol-consumption-aldh2-rs671-polymorphism-and-helicobacter-pylori-infection-on-the-gastric-cancer-risk-in-a-korean-population
#14
Sarah Yang, Jeonghee Lee, Il Ju Choi, Young Woo Kim, Keun Won Ryu, Joohon Sung, Jeongseon Kim
The effect of alcohol consumption on the risk of gastric cancer (GC) has not yet been fully elucidated, and an aldehyde dehydrogenase 2 (ALDH2) polymorphism, rs671, is a genetic variant that influences alcohol consumption in East Asians. Additionally, the discrepancy between the Helicobacter pylori (H. pylori) infection prevalence and GC incidence across Asian countries has not been explained. This study evaluated the effects of alcohol consumption and genetic susceptibility to defective acetaldehyde metabolism on the GC risk and their interactions with H...
December 27, 2016: Oncotarget
https://www.readbyqxmd.com/read/28036144/revisiting-type-2-high-and-type-2-low-airway-inflammation-in-asthma-current-knowledge-and-therapeutic-implications
#15
Douglas Robinson, Marc Humbert, Roland Buhl, Alvaro A Cruz, Hiromasa Inoue, Stephan Korom, Nicola A Hanania, Parameswaran Nair
Asthma is a complex respiratory disorder characterized by marked heterogeneity in individual patient disease triggers and response to therapy. Several asthma phenotypes have now been identified, each defined by a unique interaction between genetic and environmental factors, including inflammatory, clinical and trigger-related phenotypes. Endotypes further describe the functional or pathophysiologic mechanisms underlying the patient's disease. Type 2-driven asthma is an emerging nomenclature for a common subtype of asthma and is characterized by the release of signature cytokines IL-4, IL-5 and IL-13 from cells of both the innate and adaptive immune systems...
December 30, 2016: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28025544/noncoding-rna-profiles-in-tobacco-and-alcohol-associated-diseases
#16
REVIEW
Nayra Soares do Amaral, Natalia Cruz E Melo, Beatriz de Melo Maia, Rafael Malagoli Rocha
Tobacco and alcohol are the leading environmental risk factors in the development of human diseases, such as cancer, cardiovascular disease, and liver injury. Despite the copious amount of research on this topic, by 2030, 8.3 million deaths are projected to occur worldwide due to tobacco use. The expression of noncoding RNAs, primarily microRNAs (miRNAs) and long noncoding RNAs (lncRNAs), is modulated by tobacco and alcohol consumption. Drinking alcohol and smoking cigarettes can modulate the expression of miRNAs and lncRNAs through various signaling pathways, such as apoptosis, angiogenesis, and inflammatory pathways-primarily interleukin 6 (IL-6)/signal transducer and activator of transcription 3 (STAT3), which seems to play a major role in the development of diseases associated with these risk factors...
December 23, 2016: Genes
https://www.readbyqxmd.com/read/28018345/increased-toll-like-receptors-activity-and-tlr-ligands-in-patients-with-autoimmune-thyroid-diseases
#17
Shiqiao Peng, Chenyan Li, Xinyi Wang, Xin Liu, Cheng Han, Ting Jin, Shanshan Liu, Xiaowen Zhang, Hanyi Zhang, Xue He, Xiaochen Xie, Xiaohui Yu, Chuyuan Wang, Ling Shan, Chenling Fan, Zhongyan Shan, Weiping Teng
OBJECTIVE: Autoimmune thyroid disease (AITD) is an organ-specific disorder due to the interplay between environmental and genetic factors. Toll-like receptors (TLRs) are pattern recognition receptors expressed abundantly on monocytes. There is a paucity of data on TLR expression in AITD. The aim of this study was to examine TLR expression, activation, ligands, and downstream signaling adaptors in peripheral blood mononuclear cells (PBMCs) extracted from untreated AITD patients and healthy controls...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/28017833/protein-palmitoylation-by-zdhhc13-protects-skin-against-microbial-driven-dermatitis
#18
Li-Ying Chen, Hsin-Fang Yang-Yen, Chun-Chou Tsai, Christina Li-Ping Thio, Hsiao-Li Chuang, Liang-Tung Yang, Li-Fen Shen, I-Wen Song, Kai-Ming Liu, Yen-Te Huang, Fu-Tong Liu, Ya-Jen Chang, Yuan-Tsong Chen, Jeffrey J Y Yen
Atopic dermatitis (AD) is a complex chronic inflammatory skin disorder that results from intimate interactions between genetic predisposition, host environment, skin barrier defects, and immunological factors. However, a clear genetic roadmap leading to AD remains to be fully explored. From a genome-wide mutagenesis screen, deficiency of ZDHHC13, a palmitoylacyl transferase, has previously been associated with skin and multi-tissue inflammatory phenotypes. Here, we report that ZDHHC13 is required for skin barrier integrity and that deficiency of ZDHHC13 renders mice susceptible to environmental bacteria, resulting in persistent skin inflammation and an AD-like disease...
December 22, 2016: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28012046/imidazolium-based-ionic-liquids-for-cellulose-pretreatment-recent-progresses-and-future-perspectives
#19
REVIEW
Yujin Cao, Rubing Zhang, Tao Cheng, Jing Guo, Mo Xian, Huizhou Liu
As the most abundant biomass in nature, cellulose is considered to be an excellent feedstock to produce renewable fuels and fine chemicals. Due to its hydrogen-bonded supramolecular structure, cellulose is hardly soluble in water and most conventional organic solvents, limiting its further applications. The emergence of ionic liquids (ILs) provides an environmentally friendly, biodegradable solvent system to dissolve cellulose. This review summarizes recent advances concerning imidazolium-based ILs for cellulose pretreatment...
January 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28010888/dose-dependent-effects-of-morphine-on-lipopolysaccharide-lps-induced-inflammation-and-involvement-of-multixenobiotic-resistance-mxr-transporters-in-lps-efflux-in-teleost-fish
#20
Hélène Mottaz, Rene Schönenberger, Stephan Fischer, Rik I L Eggen, Kristin Schirmer, Ksenia J Groh
Opioid drugs, such as morphine (MO), detected in aquatic environments worldwide, may harm fish due to their semi-persistence and ability to potently interact with molecular targets conserved across vertebrates. Here, we established a waterborne bacterial lipopolysaccharide (LPS) challenge assay with zebrafish embryos as a model to investigate chemically-induced disruption of the innate immune system, and used it to study the effects of MO exposure. Exposure to 1 mg/L MO resulted in pronounced immunosuppression, reflected in downregulation of several inflammation-related genes, including myd88, trif, traf6, p38, nfκb2, il-1β, il-8 and ccl34a...
February 2017: Environmental Pollution
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