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https://www.readbyqxmd.com/read/28641278/astragaloside-iv-alleviates-heat-induced-inflammation-by-inhibiting-endoplasmic-reticulum-stress-and-autophagy
#1
Zhiwei Dong, Jian Zhou, Ying Zhang, Yajie Chen, Zichen Yang, Guangtao Huang, Yu Chen, Zhiqiang Yuan, Yizhi Peng, Tongtong Cao
BACKGROUND: Thermal injury is the main cause of pulmonary disease in stroke after burn and can be life threatening. Heat-induced inflammation is an important factor that triggers a series of induces pathological changes. However, this mechanism underlying heat-induced inflammation in thermal inhalation injury remains unclear. Studies have revealed that astragaloside-IV (AS-IV), a natural compound extracted from Astragalus membranaceus, has protective effects in inflammatory diseases. Here, we investigated whether the protective effects of AS-IV occur because of the suppression of heat-induced endoplasmic reticulum (ER) stress and excessive autophagy Methods: AS-IV was administered to Wistar rats after thermal inhalation injury and 16HBE140-cells were treated with AS-IV...
June 23, 2017: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/28641051/beneficial-role-of-citrus-fruit-polyphenols-against-hepatic-dysfunctions-a-review
#2
Md Mohabbulla Mohib, Kazi Afnan, Tasfiq Zaman Paran, Salma Khan, Juthika Sarker, Nahid Hasan, Istiaque Hasan, Md Abu Taher Sagor
Alcoholic liver diseases and virus-induced hepatic dysfunctions are prevalent in western countries. Evidence also suggests that hyperglycemia and insulin resistance are key players in the development of hepatic diseases and their complications. Since the comorbid diseases like obesity, diabetes and vascular dysfunctions primarily affect liver, the modern therapies against other hepatic dysfunctions are becoming a major challenge to treat. In addition to these, polypharmacy and adverse drug reactions (ADRs) are further aggravating the phenomenon...
June 22, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28640623/reactions-of-sulfur-containing-organic-compounds-and-peptides-in-1-ethyl-3-methyl-imidazolium-acetate
#3
Andreas C Baumruck, Daniel Tietze, Annegret Stark, Alesia A Tietze
The neat ionic liquid (IL) [C2mim][OAc] is not just capable of dissolving thiol- and disulfide-containing compounds, but is able to chemically react with them without addition of any catalytic reagent. Through the analysis of four small organic molecules and a cysteine-containing peptide we could postulate a general reaction mechanism. Here, the imidazolium-carbenes preferentially react with the disulfide bond, but not thiol group. Moreover, the imidazole moiety was found to abstract the sulfur atom from the cysteine residue, providing an alternative way to transform Cys residues, which were artificially inserted into a peptide sequence in order to perform native chemical ligation (NCL) of two peptide fragments...
June 22, 2017: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/28637034/recovery-of-food-intake-after-gastrectomy-for-gastric-cancer-based-on-a-large-scale-gastric-cancer-cohort
#4
Bang Wool Eom, Jeongseon Kim, Deok Hee Kim, Young-Il Kim, Hong Man Yoon, Soo-Jeong Cho, Jong Yeul Lee, Chan Gyoo Kim, Il Ju Choi, Young-Woo Kim, Byung-Ho Nam, Keun Won Ryu
BACKGROUND: This study was aimed at evaluating the food intake and nutritional status of patients who underwent gastrectomy for gastric cancer based on a large-scale gastric cancer cohort. METHODS: An observational prospective cohort study for gastric cancer has been conducted since 2010. From the cohort data, we selected the data for patients who completed at least 2 days of 3-day diet diaries and who underwent subtotal gastrectomy (STG) or total gastrectomy (TG)...
June 22, 2017: Digestive Surgery
https://www.readbyqxmd.com/read/28637021/dectin-1-signaling-inhibits-osteoclastogenesis-via-il-33-induced-inhibition-of-nfatc1
#5
Xiaoqing Zhu, Yinghua Zhao, Yuxue Jiang, Tianxue Qin, Jintong Chen, Xiao Chu, Qing Yi, Sujun Gao, Siqing Wang
Abnormal osteoclast activation contributes to osteolytic bone diseases (OBDs). It was reported that curdlan, an agonist of dectin-1, inhibits osteoclastogenesis. However, the underlying mechanisms are not fully elucidated. In this study, we found that curdlan potently inhibited RANKL-induced osteoclast differentiation and the resultant bone resorption. Curdlan inhibited the expression of nuclear factor of activated T-cells, cytoplasmic 1 (NFATc1), the key transcriptional factor for osteoclastogenesis. Notably, dectin-1 activation increased the expression of MafB, an inhibitor of NFATc1, and IL-33 in osteoclast precursors...
June 8, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636988/role-of-the-jak2-stat3-signaling-pathway-in-the-pathogenesis-of-type-2-diabetes-mellitus-with-macrovascular-complications
#6
Mengxue Yang, Mei Tian, Xuan Zhang, Jie Xu, Bo Yang, Jie Yu, Fengping Li, Ya Li, Sicheng Li, Xianwen Li
This study investigated the role of the JAK2/STAT3/SOCS pathway in type 2 diabetes mellitus (T2DM) and macrovascular complications (DV) (T2DM+DV) conditions. Human umbilical vein endothelial cells (HUVECs) were co-cultured with human monocytes (THP-1) and exposed to peripheral blood sera from 30 T2DM patients, 30 patients with T2DM+DV and 30 healthy controls; the groups were divided into the control, T2DM, DV, T2DM+AG490 and DV+AG490 groups. Chemotaxis of treated HUVECs toward THP-1 cells was assessed using Transwell migration...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636595/nlrp9b-inflammasome-restricts-rotavirus-infection-in-intestinal-epithelial-cells
#7
Shu Zhu, Siyuan Ding, Penghua Wang, Zheng Wei, Wen Pan, Noah W Palm, Yi Yang, Hua Yu, Hua-Bing Li, Geng Wang, Xuqiu Lei, Marcel R de Zoete, Jun Zhao, Yunjiang Zheng, Haiwei Chen, Yujiao Zhao, Kellie A Jurado, Ningguo Feng, Liang Shan, Yuval Kluger, Jun Lu, Clara Abraham, Erol Fikrig, Harry B Greenberg, Richard A Flavell
Rotavirus, a leading cause of severe gastroenteritis and diarrhoea in young children, accounts for around 215,000 deaths annually worldwide. Rotavirus specifically infects the intestinal epithelial cells in the host small intestine and has evolved strategies to antagonize interferon and NF-κB signalling, raising the question as to whether other host factors participate in antiviral responses in intestinal mucosa. The mechanism by which enteric viruses are sensed and restricted in vivo, especially by NOD-like receptor (NLR) inflammasomes, is largely unknown...
June 21, 2017: Nature
https://www.readbyqxmd.com/read/28636561/il-18-polymorphisms-contribute-to-hepatitis-b-virus-related-cirrhosis-and-hepatocellular-carcinoma-susceptibility-in-chinese-population-a-case-control-study
#8
Zhi-Jun Dai, Xing-Han Liu, Meng Wang, Yan Guo, Wenge Zhu, Xiao Li, Shuai Lin, Tian Tian, Kang Liu, Yi Zheng, Peng Xu, Tianbo Jin, Xiaopeng Li
IL-18 polymorphisms influence the transcriptional activity of the IL-18 gene and associated with various diseases. However, their relationships with hepatitis B virus-related liver diseases had not reached a consensus. So we conducted this case-control study with a view to clarifying the association. We included four groups: healthy controls, chronic hepatitis B virus (CHB) carriers, liver cirrhosis (LC) and hepatocellular carcinoma (HCC) groups with each group of 250 persons. Odd ratios (ORs) and 95% confidence intervals (95%CIs) with or without adjustment were calculated...
June 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636560/lipocalin-2-regulates-intestine-bacterial-survival-by-interplaying-with-siderophore-in-a-weaned-piglet-model-of-escherichia-coli-infection
#9
Bing-Xiu Guo, Qian-Qian Wang, Jia-Hui Li, Zhen-Shun Gan, Xiao-Feng Zhang, Yi-Zhen Wang, Hua-Hua Du
Iron is an essential nutrient that facilitates cell proliferation and growth, which plays a pivotal role in modulating the battle for survival between mammalian hosts and their pathogens. Pathogenic bacteria secrete siderophores to acquire iron from the host. However, lipocalin 2 (Lcn2), a siderophore-binding antimicrobial protein, binds to siderophores to prevent bacterial uptake of iron, which is critical for the control of systemic infection with Escherichia coli (E. coli). But few studies focus on the anti-infective response of Lcn2 in the intestines by inhibiting bacterial proliferation based on microbial iron metabolism...
June 16, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636034/upregulation-of-heme-oxygenase-1-mediates-the-anti-inflammatory-activity-of-casein-glycomacropeptide-gmp-hydrolysates-in-lps-stimulated-macrophages
#10
Tiange Li, Xue Cheng, Min Du, Bin Chen, Xueying Mao
Recently, we have shown that casein glycomacropeptide hydrolysates (GHP) exhibit both anti-inflammatory and anti-oxidative activities in vitro. However, whether heme oxygenase-1 (HO-1) is involved in the cytoprotective effect of GHP against the inflammatory status remains unclear. Therefore, we hypothesized that HO-1 is a potential target of GHP, which mediates its anti-inflammatory effect. Here, GHP inhibited the intracellular reactive oxygen species (ROS) accumulation and NADPH oxidase 2 (NOX2) expression and enhanced reduced glutathione (GSH) levels in LPS-stimulated RAW264...
June 21, 2017: Food & Function
https://www.readbyqxmd.com/read/28635957/itk-signalling-via-the-ras-irf4-pathway-regulates-the-development-and-function-of-tr1-cells
#11
Weishan Huang, Sabrina Solouki, Nicholas Koylass, Song-Guo Zheng, Avery August
Type 1 regulatory T (Tr1) cells differentiate in response to signals engaging the T cell receptor (TCR), express high levels of the immunosuppressive cytokine IL-10, but not Foxp3, and can suppress inflammation and promote immune tolerance. Here we show that ITK, an important modulator of TCR signalling, is required for the TCR-induced development of Tr1 cells in various organs, and in the mucosal system during parasitic and viral infections. ITK kinase activity is required for mouse and human Tr1 cell differentiation...
June 21, 2017: Nature Communications
https://www.readbyqxmd.com/read/28635609/gastroprotective-effect-of-ghrelin-against-indomethacin-induced-gastric-injury-in-rats-possible-role-of-heme-oxygenase-1-pathway
#12
Mona M Allam, Ola A El-Gohary
Ghrelin has been shown to ameliorate gastric injury by several mechanisms in experimental animal models. The present study aimed to investigate the effect of pretreatment with ghrelin on indomethacin-induced gastric injury in rats and the role of heme oxygenase-1(HO-1) pathway as a novel mechanism underlying the gastroprotective effect of ghrelin. In all groups studied, ulcer score (U.S), ulcer index (U.I) and preventive index (P.I) were evaluated and the gastric inflammatory biomarkers including levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and myeloperoxidase (MPO) activity as well as prostaglandin E2 (PGE2), malondialdehyde (MDA), glutathione (GSH), superoxide dismutase (SOD), HO-1 and bilirubin as an indicator of heme oxygenase activity were measured...
July 2017: General Physiology and Biophysics
https://www.readbyqxmd.com/read/28635324/gliptins-suppress-inflammatory-macrophage-activation-to-mitigate-inflammation-fibrosis-oxidative-stress-and-vascular-dysfunction-in-models-of-non-alcoholic-steatohepatitis-and-liver-fibrosis
#13
Xiaoyu Wang, Michael Hausding, Shih-Yen Weng, Yong Ook Kim, Sebastian Steven, Thomas Klein, Andreas Daiber, Detlef Schuppan
AIMS: Non-alcoholic steatohepatitis (NASH) is characterized by steatosis, panlobular inflammation, liver fibrosis and increased cardiovascular mortality. Dipeptidyl peptidase-4 (DPP-4) inhibitors (gliptins) are indirect glucagon like peptide 1 (GLP-1) agonists with antidiabetic and anti-inflammatory activity, used for the treatment of type 2 diabetes. Their potential and underlying mechanisms to treat metabolic liver inflammation and fibrosis as well as the associated vascular dysfunction remain to be explored...
June 21, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28634856/estrogen-receptor-%C3%AE-gene-polymorphism-and-vascular-complications-in-girls-with-type-1-diabetes-mellitus
#14
Bartosz Słomiński, Jolanta Myśliwska, Monika Ryba-Stanisławowska, Maria Skrzypkowska, Małgorzata Myśliwiec
The effect of estrogens is mediated by activation of estrogen receptors (ERs). Because ER-α gene polymorphisms may exert different effects in childhood, we analyzed the associations between the IVS1 -397T>C (PvuII) polymorphism and systemic inflammatory state, proangiogenic factors, frequency of monocyte subsets, lipid profile, blood pressure, and vascular complications in girls with type 1 diabetes mellitus (DM1). We examined 180 young girls with DM1 and 120 healthy age-matched controls. The analysis concerned PvuII polymorphism of the ER-α gene as well as the levels of serum inflammatory markers (CRP, IL-6, TNF-α), proangiogenic factors (VEGF, angiogenin), 17β-estradiol, values of monocyte subsets (CD14(++)CD16(-) and CD14(+)CD16(+)), lipid profile, and blood pressure...
June 20, 2017: Molecular and Cellular Biochemistry
https://www.readbyqxmd.com/read/28634844/thrombospondin-1-production-regulates-the-inflammatory-cytokine-secretion-in-thp-1-cells-through-nf-%C3%AE%C2%BAb-signaling-pathway
#15
Tian Xing, Yao Wang, Wen-Jie Ding, Yuan-Ling Li, Xiao-Dong Hu, Cong Wang, Ao Ding, Ji-Long Shen
Thrombospondin-1 (TSP-1) is upregulated in several inflammatory diseases. Recent data have shown that macrophages from TSP-1-deficient mice have a reduced inflammatory phenotype, suggesting that TSP-1 plays a part in macrophage activation. DNA microarray approach revealed that Porphyromonas gingivalis lipopolysaccharide (P. gingivalis LPS) may induce the enhanced TSP-1 expression in human monocytes, suggesting a role of TSP-1-mediated pathogenesis in periodontitis. Until recently, the function of TSP-1 has been a matter of debate...
June 20, 2017: Inflammation
https://www.readbyqxmd.com/read/28634772/the-effect-of-desensitization-therapy-in-kidney-transplantation
#16
Yong Chul Kim, Mi-Yeon Yu, Jung Pyo Lee, Hajeong Lee, Sang-Il Min, Jongwon Ha, Yon Su Kim
BACKGROUND: Desensitization therapy may enable the patient to get allograft in sensitized recipient or solve the organ shortage in ABO-incompatible relationship in kidney transplantation (KT). However, the graft outcome and morbidity remains unclear. METHODS: We retrospectively analyzed 845 KT patients from January 2010 to February 2016 at Seoul National University Hospital. The patients were divided into three groups as follows: HLA-incompatible (HLAi) group, ABO-incompatible (ABOi) group, and control group...
June 20, 2017: Clinical and Experimental Nephrology
https://www.readbyqxmd.com/read/28634684/heterogeneity-index-evaluated-by-slope-of-linear-regression-on-18-f-fdg-pet-ct-as-a-prognostic-marker-for-predicting-tumor-recurrence-in-pancreatic-ductal-adenocarcinoma
#17
Yong-Il Kim, Yong Joong Kim, Jin Chul Paeng, Gi Jeong Cheon, Dong Soo Lee, June-Key Chung, Keon Wook Kang
PURPOSE: (18)F-Fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) has been investigated as a method to predict pancreatic cancer recurrence after pancreatic surgery. We evaluated the recently introduced heterogeneity indices of (18)F-FDG PET/CT used for predicting pancreatic cancer recurrence after surgery and compared them with current clinicopathologic and (18)F-FDG PET/CT parameters. METHODS: A total of 93 pancreatic ductal adenocarcinoma patients (M:F = 60:33, mean age = 64...
June 20, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28634667/elevated-interleukin-13-receptor-alpha-1-expression-in-tumor-cells-is-associated-with-poor-prognosis-in-patients-with-invasive-breast-cancer
#18
Min Hui Park, Hee Jung Kwon, Jae-Ryong Kim, Byungheon Lee, Soo Jung Lee, Young Kyung Bae
BACKGROUND: Interleukin (IL)-13 is an immunoregulatory, anti-inflammatory cytokine that is produced by numerous immune cells, and plasma membrane receptor for IL-13 (IL-13R) is known to be expressed in various human malignancies and in immune cells. METHODS: The authors evaluated the expression of IL-13R alpha 1 (IL-13Rα1, an IL-13R subtype) by immunohistochemistry in tissue microarrays of 1213 invasive breast cancer (IBC) samples to determine the prognostic value of IL-13Rα1 expression...
June 20, 2017: Annals of Surgical Oncology
https://www.readbyqxmd.com/read/28634425/a-transcriptional-regulatory-role-for-the-membrane-type-1-matrix-metalloproteinase-in-carcinogen-induced-inflammasome-gene-expression
#19
Samuel Sheehy, Borhane Annabi
Signal-transducing functions driven by the cytoplasmic domain of membrane type-1 matrix metalloproteinase (MT1-MMP) are believed to regulate many inflammation-associated cancer cell functions including migration, proliferation, and survival. Aside from upregulation of the inflammation biomarker cyclooxygenase-2 (COX-2) expression, MT1-MMP's role in relaying intracellular signals triggered by extracellular pro-inflammatory cues remains poorly understood. Here, we triggered inflammation in HT1080 fibrosarcoma cells with phorbol-12-myristate-13-acetate (PMA), an inducer of COX-2 and of MT1-MMP...
2017: Gene Regulation and Systems Biology
https://www.readbyqxmd.com/read/28634408/a-tightly-regulated-il-22-response-maintains-immune-functions-and-homeostasis-in-systemic-viral-infection
#20
Panpan Yi, Yuejin Liang, Denley Ming Kee Yuan, Zuliang Jie, Zakari Kwota, Yan Chen, Yingzi Cong, Xuegong Fan, Jiaren Sun
Interleukin-22 (IL-22) plays an important role in host immunity and tissue homeostasis in infectious and inflammatory diseases. However, the function and regulation of IL-22 in viral infection remain largely unknown. Here, we report that viral infection triggered early IL-22 production from the liver and lymphoid organs. γδ T cells are the main immune cells to produce IL-22 in the liver, a process mediated by the IL-23/phosphoinositide 3-kinase (PI3K)/mammalian target of rapamycin complex 1 (mTORC1) signaling pathway...
June 20, 2017: Scientific Reports
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