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https://www.readbyqxmd.com/read/28813645/lat-is-essential-for-the-mast-cell-stabilising-effect-of-thga-in-ige-mediated-mast-cell-activation
#1
Ji Wei Tan, Daud Ahmad Israf, Nur Fariesha Md Hashim, Yoke Kqueen Cheah, Hanis Hazeera Harith, Khozirah Shaari, Chau Ling Tham
Mast cells play a central role in the pathogenesis of allergic reaction. Activation of mast cells by antigens is strictly dependent on the influx of extracellular calcium that involves a complex interaction between signalling molecules located within the cells. We have previously reported that tHGA, an active compound originally isolated from a local shrub known as Melicope ptelefolia, prevented IgE-mediated mast cell activation and passive systemic anaphylaxis by suppressing the release of interleukin-4 (IL-4) and tumour necrosis factor (TNF)-α from activated rat basophilic leukaemia (RBL)-2H3 cells...
August 13, 2017: Biochemical Pharmacology
https://www.readbyqxmd.com/read/28811129/microrna-29a-regulates-lipopolysaccharide-lps-induced-inflammatory-responses-in-murine-macrophages-through-the-akt1-nf-%C3%AE%C2%BAb-pathway
#2
Bufu Tang, Xingchen Li, Yanling Ren, Jing Wang, Di Xu, Yiru Hang, Tingting Zhou, Feng Li, Ling Wang
Akt activation in macrophages enhances lipopolysaccharide (LPS)-induced inflammatory responses through upregulation of the NF-κB signal pathway. Akt phosphorylation via microRNA (miR) caused the downregulation of Akt1. Here, we evaluated the role of miR-29a in LPS-triggered inflammatory responses. LPS stimulation of primary macrophages and RAW264.7 cells gradually increased the levels of miR-29a and was dependent on the LPS concentration. Overexpression of miR-29a in macrophages enhanced the expression of proinflammatory cytokines including IL-1β and IL-6, but not TNF-α...
August 12, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28810543/atorvastatin-has-a-protective-effect-in-a-mouse-model-of-bronchial-asthma-through-regulating-tissue-transglutaminase-and-triggering-receptor-expressed-on-myeloid-cells-1-expression
#3
Ming-Wei Liu, Rong Liu, Hai-Ying Wu, Mei Chen, Min-Na Dong, Yun-Qiao Huang, Chun-Hai Zhang, Yin-Zhong Wang, Jing Xia, Yang Shi, Feng-Mei Xie, Hua Luo, Xin-Yuan Zhao, Wei Wei, Mei-Xian Su
Airway remodeling in asthma contributes to airway hyperreactivity, loss of lung function and persistent symptoms. Current therapies do not adequately treat the structural airway changes associated with asthma. Statin drugs have improved respiratory health and their therapeutic potential in asthma has been tested in clinical trials. However, the mechanism of action of statins in this context has remained elusive. The present study hypothesized that atorvastatin treatment of ovalbumin-exposed mice attenuates early features of airway remodeling via a mevalonate-dependent mechanism...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28808385/anti-inflammatory-effect-of-etlingera-pavieana-pierre-ex-gagnep-r-m-sm-rhizomal-extract-and-its-phenolic-compounds-in-lipopolysaccharide-stimulated-macrophages
#4
Ekaruth Srisook, Mullika Palachot, Sakulrat Mankhong, Klaokwan Srisook
BACKGROUND: In our continuing search for anti-inflammatory agents from Thai herbs, Etlingera pavieana (Pierre ex Gagnep.) R.M.Sm. showed potent inhibition on nitric oxide (NO) production in lipopolysaccharide (LPS)-induced macrophages. However, the mechanism behind its inhibitory effect has not been yet explored, and little is known regarding its bioactive compounds responsible for the anti-inflammatory effect. OBJECTIVE: In the present study, anti-inflammatory effect of hexane, ethyl acetate, and water fractions of rhizomal ethanol extracts of E...
July 2017: Pharmacognosy Magazine
https://www.readbyqxmd.com/read/28808017/antitumor-effect-of-batf2-through-il-12-p40-up-regulation-in-tumor-associated-macrophages
#5
Hisashi Kanemaru, Fumihiro Yamane, Kiyoharu Fukushima, Takanori Matsuki, Takahiro Kawasaki, Isao Ebina, Kanako Kuniyoshi, Hiroki Tanaka, Kenta Maruyama, Kazuhiko Maeda, Takashi Satoh, Shizuo Akira
The development of effective treatments against cancers is urgently needed, and the accumulation of CD8(+) T cells within tumors is especially important for cancer prognosis. Although their mechanisms are still largely unknown, growing evidence has indicated that innate immune cells have important effects on cancer progression through the production of various cytokines. Here, we found that basic leucine zipper transcription factor ATF-like 2 (Batf2) has an antitumor effect. An s.c. inoculated tumor model produced fewer IL-12 p40(+) macrophages and activated CD8(+) T cells within the tumors of Batf2(-/-) mice compared with WT mice...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28796265/rnf183-promotes-proliferation-and-metastasis-of-colorectal-cancer-cells-via-activation-of-nf-%C3%AE%C2%BAb-il-8-axis
#6
Rong Geng, Xin Tan, Jiangxue Wu, Zhizhong Pan, Min Yi, Wei Shi, Ranyi Liu, Chen Yao, Gaoyuan Wang, Jiaxin Lin, Lin Qiu, Wenlin Huang, Shuai Chen
Colorectal cancer (CRC) is one of the most common malignant tumors worldwide, which is a heterogeneous disease and main risk factors are associated with inflammation, family history, genetic mutations, epigenetics, and so on. Ring finger domain proteins have been reported involved in carcinogenesis, whereas their roles in CRC are rarely studied. Here, we reanalyzed the expression of 202 RNF family members in CRC using published microarray data from GEO database and found that RNF183 is markedly upregulated in tumor tissues...
August 10, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28783661/citrullination-of-nf-%C3%AE%C2%BAb-p65-promotes-its-nuclear-localization-and-tlr-induced-expression-of-il-1%C3%AE-and-tnf%C3%AE
#7
Bo Sun, Nishant Dwivedi, Tyler J Bechtel, Janet L Paulsen, Aaron Muth, Mandar Bawadekar, Gang Li, Paul R Thompson, Miriam A Shelef, Celia A Schiffer, Eranthie Weerapana, I-Cheng Ho
Many citrullinated proteins are known autoantigens in rheumatoid arthritis, a disease mediated by inflammatory cytokines, such as tumor necrosis factor-α (TNFα). Citrullinated proteins are generated by converting peptidylarginine to peptidylcitrulline, a process catalyzed by the peptidylarginine deiminases (PADs), including PAD1 to PAD4 and PAD6. Several major risk factors for rheumatoid arthritis are associated with heightened citrullination. However, the physiological role of citrullination in immune cells is poorly understood...
June 9, 2017: Science Immunology
https://www.readbyqxmd.com/read/28780681/interaction-of-wip1-and-nf-%C3%AE%C2%BAb-regulates-neuroinflammatory-response-in-astrocytes
#8
Fan Xu, Lifei Chen, Xin Zhao, Haibin Zhong, Ling Cui, Li Jiang, Hui Huang, Li Li, Siming Zeng, Min Li
OBJECTIVE: The aims of the present study were to detect the interaction of Wip1 and NF-κB P65 in retina of an LPS-induced astrocytes activation model. METHODS: The interaction between Wip1 and nuclear factor kappa B (NF-κB) P65 was observed in lipopolysaccharide (LPS)-stimulated primary rat astrocytes derived from retina. The expressions of Wip1 and NF-κB P65 were evaluated using Western blot and RT-PCR. Small interfering RNA (siRNA) against Wip1 was transfected into astrocytes to clarify the phosphorylation status and nuclear translocation of NF-κB P65 and expressions of these proinflammatory factors...
August 5, 2017: Inflammation Research: Official Journal of the European Histamine Research Society ... [et Al.]
https://www.readbyqxmd.com/read/28772241/nf-%C3%AE%C2%BAb-p65-overexpression-promotes-bladder-cancer-cell-migration-via-fbw7-mediated-degradation-of-rhogdi%C3%AE-protein
#9
Junlan Zhu, Yang Li, Caiyi Chen, Jiugao Ma, Wenrui Sun, Zhongxian Tian, Jingxia Li, Jiheng Xu, Claire S Liu, Dongyun Zhang, Chuanshu Huang, Haishan Huang
BACKGROUND: Since invasive bladder cancer (BC) is one of the most lethal urological malignant tumors worldwide, understanding the molecular mechanisms that trigger the migration, invasion, and metastasis of BC has great significance in reducing the mortality of this disease. Although RelA/p65, a member of the NF-kappa B transcription factor family, has been reported to be upregulated in human BCs, its regulation of BC motility and mechanisms have not been explored yet. METHODS: NF-κBp65 expression was evaluated in N-butyl-N-(4-hydroxybutyl)-nitrosamine (BBN)-induced high invasive BCs by immunohistochemistry staining and in human BC cell lines demonstrated by Western Blot...
July 31, 2017: Neoplasia: An International Journal for Oncology Research
https://www.readbyqxmd.com/read/28765524/bmal1-regulates-inflammatory-responses-in-macrophages-by-modulating-enhancer-rna-transcription
#10
Yumiko Oishi, Shinichiro Hayashi, Takayuki Isagawa, Motohiko Oshima, Atsushi Iwama, Shigeki Shimba, Hitoshi Okamura, Ichiro Manabe
Bmal1 (encoded by Arntl gene) is a core circadian clock gene that regulates various genes involved in circadian rhythm. Although Bmal1 is expressed rhythmically in macrophages, the role of Bmal1 in the regulation of their cellular function remains insufficiently understood. Here, we report that Bmal1 regulates time-dependent inflammatory responses following Toll-like receptor 4 (TLR4) activation by modulating enhancer activity. Global transcriptome analysis indicated that deletion of Arntl perturbed the time-dependent inflammatory responses elicited by TLR4 activation by Kdo2-lipid A (KLA)...
August 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28755171/sirt1-induces-resistance-to-apoptosis-in-human-granulosa-cells-by-activating-the-erk-pathway-and-inhibiting-nf-%C3%AE%C2%BAb-signaling-with-anti-inflammatory-functions
#11
Ying Han, Haining Luo, Hui Wang, Jun Cai, Yunshan Zhang
SIRT1, a member of the sirtuin family, has recently emerged as a vital molecule in controlling ovarian function. The aims of the present study were to investigate SIRT1 expression and analyze SIRT1-mediated apoptosis in human granulosa cells (GCs). Human ovarian tissues were subjected to immunohistochemistry for localization of SIRT1 expression. SIRT1 knockdown in a human ovarian GC tumor line (COV434) was achieved by small interfering RNA, and the relationship between apoptosis and SIRT1 was assessed by quantitative reverse transcription polymerase chain reaction and western blotting...
July 28, 2017: Apoptosis: An International Journal on Programmed Cell Death
https://www.readbyqxmd.com/read/28754773/correction-for-copetti-et-al-p65-rela-modulates-becn1-transcription-and-autophagy
#12
Tamara Copetti, Cosetta Bertoli, Emiliano Dalla, Francesca Demarchi, Claudio Schneider
No abstract text is available yet for this article.
August 15, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28753407/il-29-enhances-cxcl10-production-in-tnf-%C3%AE-stimulated-human-oral-epithelial-cells
#13
Yoshitaka Hosokawa, Ikuko Hosokawa, Satoru Shindo, Kazumi Ozaki, Takashi Matsuo
Interleukin-29 (IL-29) is a cytokine belonging to the Type III interferon family. It was recently detected in the gingival crevicular fluid of periodontitis patients. However, the role of IL-29 in the pathogenesis of periodontal disease remains unknown. The aim of this study was to examine the effects of IL-29 on C-X-C motif chemokine ligand 10 (CXCL10) production in human oral epithelial cells. We measured CXCL10 production in TR146 cells, which is a human oral epithelial cell line, using an enzyme-linked immunosorbent assay...
August 2017: Immunological Investigations
https://www.readbyqxmd.com/read/28752966/-the-study-of-the-effect-and-mechanism-of-glucagon-like-peptide-1-in-bleomycin-induced-pulmonary-fibrosis-in-mice
#14
Mei Liu, Si Gou, Hai-Tao Chen, Zhong-Hua Chen
OBJECTIVE: To investigate the potential value and mechanisms of glucagon like peptide-1 (GLP-1) on bleomycin (BLM)-induced pulmonary fibrosis in mice. METHODS: Mice were treated with a single sublethal dose of BLM (3 mg/kg ) via intratracheal infusion to produce pulmonary fibrosis, and then liraglutide (2 mg/kg) was given to the mice for 28 days by intraperitoneal injection. 28 days after BLM infusion, the number of total cells, macrophages and neutrophils, lymphocytes, and the content of transforming growth factor-beta 1 (TGF-β1) in bronchoalveolar lavage fluid (BALF) were measured...
July 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28749049/mineral-trioxide-aggregate-enhances-the-osteogenic-capacity-of-periodontal-ligament-stem-cells-via-nf-%C3%AE%C2%BAb-and-mapk-signaling-pathways
#15
Yanqiu Wang, Yixiang Zhou, Lin Jin, Xiyao Pang, Yadie Lu, Zilu Wang, Yan Yu, Jinhua Yu
INTRODUCTION: Mineral trioxide aggregate (MTA), as a bioactive material, has a widespread application in clinical practice. To date, the effects of MTA on the proliferation and differentiation of human periodontal ligament stem cells (hPDLSCs) remain unclear. MATERIALS AND METHODS: hPDLSCs were isolated from human periodontal ligament tissues and cultured with MTA conditioned media. Cell counting kit-8 (CCK-8) assay was performed to assess the proliferation capacity of MTA-treated hPDLSCs...
July 27, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28747574/oridonin-attenuates-the-release-of-pro-inflammatory-cytokines-in-lipopolysaccharide-induced-raw264-7-cells-and-acute-lung-injury
#16
Gan Zhao, Tao Zhang, Xiaofei Ma, Kangfeng Jiang, Haichong Wu, Changwei Qiu, Mengyao Guo, Ganzhen Deng
Acute lung injury (ALI) is a life-threatening inflammatory disease owing to the lack of specific and effective therapies. Oridonin (Ori) is an active diterpenoid isolated from Rabdosiarubescens (R.rubescens) that has been shown to possess a broadspectrum pharmacological properties including anti-inflammatory, antitumour, antioxidative and neuroregulatory effects. However, its potential protective mechanism in ALI is not well characterized. In this study, we demonstrated that Ori reduces the mortality of mice with ALI induced by a high dose of lipopolysaccharide (LPS), which suggests that Ori has a protective effect on LPS induced ALI...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28746340/effects-of-tanshinol-on-markers-of-bone-turnover-in-ovariectomized-rats-and-osteoblast-cultures
#17
Jianfeng Han, Wei Wang
This study was aimed to explore the role of tanshinol in osteoblastic cells, and the role in vivo using an ovariectomized (OVX) rat model of osteoporosis. MC3T3-E1 cells were pretreated with 0-400 μg/mL tanshinol, and then cell viability, apoptosis, alkaline phosphatase (ALP) activity and the expressions of Collagen Type I Alpha 1 (Col1A1), Runt Related Transcription Factor 2 (Runx2) and osteocalcin (OCN) were respectively detected. Rats underwent OVX surgery was intervened with 5 mg/kg tanshinol or 25 μg/kg β-estradiol (E2) for 12 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28742266/p-coumaric-acid-a-dietary-polyphenol-ameliorates-inflammation-and-curtails-cartilage-and-bone-erosion-in-the-rheumatoid-arthritis-rat-model
#18
Manoj Kumar Neog, Samuel Joshua Pragasam, Moorthy Krishnan, Mahaboobkhan Rasool
This study was designed to explore the underlying mechanism of p-coumaric acid (CA), a dietary polyphenol in adjuvant-induced arthritis (AIA) rat model with reference to synovitis and osteoclastogenesis. Celecoxib (COX-2 selective inhibitor) (5 mg/kg b.wt) was used as a reference drug. CA remarkably suppressed the paw edema, body weight loss and inflammatory cytokine and chemokine levels (TNF-α, IL-1β, IL-6, and MCP-1) in serum and ankle joint of arthritic rats. Consistently, CA reduced the expression of osteoclastogenic factors (RANKL and TRAP), pro-inflammatory cytokines (TNF-α, IL-1β, IL-6, and IL-17), and inflammatory enzymes (iNOS and COX-2) in arthritic rats...
July 25, 2017: BioFactors
https://www.readbyqxmd.com/read/28740415/the-extracellular-matrix-of-eggshell-displays-anti-inflammatory-activities-through-nf-%C3%AE%C2%BAb-in-lps-triggered-human-immune-cells
#19
Tram T Vuong, Sissel B Rønning, Henri-Pierre Suso, Ralf Schmidt, Kristian Prydz, Marlene Lundström, Anders Moen, Mona E Pedersen
Avian eggshell membrane (ESM) is a natural biomaterial that has been used as an alternative natural bandage on burned and cut skin injuries for >400 years in Asian countries, and is available in large quantities from egg industries. Our aim was to characterize ESM that was separated and processed from egg waste, and to study whether this material possesses anti-inflammatory properties, making it suitable as an ingredient in industrial production of low cost wound healing products. Our results show that the processed ESM particles retain a fibrous structure similar to that observed for the native membrane, and contain collagen, and carbohydrate components such as hyaluronic acid and sulfated glycosaminoglycans, as well as N-glycans, mostly with uncharged structures...
2017: Journal of Inflammation Research
https://www.readbyqxmd.com/read/28732805/capillarisin-attenuates-exercise-induced-muscle-damage-through-mapk-and-nf-%C3%AE%C2%BAb-signaling
#20
Minjee Kim, Jaemoo Chun, Hyun Ah Jung, Jae Sue Choi, Yeong Shik Kim
BACKGROUND: Intense exercise has the potential to increase oxidative stress and cause muscle damage. Mitogen-activated protein kinases (MAPKs) and nuclear factor-κB (NF-κB) are two major regulators of gene transcription in response to oxidative stress in the skeletal muscle. Pure capillarisin (CAP) isolated from Artemisia capillaris Thunberg is known to have antioxidant and anti-inflammatory effects. HYPOTHESIS/PURPOSE: We hypothesized CAP to exert antioxidant activity against exercise-induced oxidative stress and suppress acute inflammatory response...
August 15, 2017: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
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