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TLR4 KIDNEY

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https://www.readbyqxmd.com/read/28223111/expression-analysis-of-nine-toll-like-receptors-in-yellow-catfish-pelteobagrus-fulvidraco-responding-to-aeromonas-hydrophila-challenge
#1
Xiao-Ting Zhang, Gui-Rong Zhang, Ze-Chao Shi, Yu-Jie Yuan, Huan Zheng, Li Lin, Kai-Jian Wei, Wei Ji
Toll-like receptors (TLRs) are important components of pattern recognition receptors (PRRs), which play significant roles in innate immunity to defense against pathogen invasion. Many TLRs have been found in teleosts, but there are no reports about cloning and expression of TLR genes in yellow catfish (Pelteobagrus fulvidraco). In this study, we analyzed the sequence characters and the relative mRNA expression levels of nine TLRs (TLR1, TLR2, TLR3, TLR4-1, TLR5, TLR7, TLR8-2, TLR9 and TLR22) in different tissues of yellow catfish...
February 18, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28196866/sglt2-expression-is-increased-in-human-diabetic-nephropathy-sglt2-inhibition-decreases-renal-lipid-accumulation-inflammation-and-the-development-of-nephropathy-in-diabetic-mice
#2
Xiaoxin X Wang, Jonathan Levi, Yuhuan Luo, Komuraiah Myakala, Michal Herman-Edelstein, Liru Qiu, Dong Wang, Yingqiong Peng, Almut Grenz, Scott Lucia, Evgenia Dobrinskikh, Vivette D D'Agati, Hermann Koepsell, Jeffrey B Kopp, Avi Rosenberg, Moshe Levi
There is very limited human renal sodium gradient dependent glucose transporter protein SGLT2 mRNA and protein expression data reported in the literature. Aim 1 of this study was to determine SGLT2 mRNA and protein levels in human and animal models of diabetic nephropathy. We have found that the expression of SGLT2 mRNA and protein is increased in renal biopsies from human subjects with diabetic nephropathy. This is in contrast to db-db mice which had no changes in renal SGLT-2 protein expression. Furthermore, the effect of SGLT2 inhibition on renal lipid content and inflammation is not known...
February 14, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28182789/puerarin-attenuates-cisplatin-induced-rat-nephrotoxicity-the-involvement-of-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#3
Xu Ma, Lei Yan, Qing Zhu, Fengmin Shao
Puerarin was a major isoflavonoid derived from the Chinese medical herb radix puerariae (Gegen). In present study effect of puerarin on cisplatin nephrotoxicity was evaluated. Rat model of nephrotoxicity was established by a single intraperitoneal injection of cisplatin (7mg/kg). Puerarin was administrated through caudal vein injection once per day at the dose of 10mg/kg, 30mg/kg and 50mg/kg. Biochemical assays showed that after cisplatin treatment the serum urea and creatinine increased significantly compared with control (P<0...
2017: PloS One
https://www.readbyqxmd.com/read/28163057/slit2-ameliorates-renal-inflammation-and-fibrosis-after-hypoxia-and-lipopolysaccharide-induced-epithelial-cells-injury-in-vitro
#4
Xiangjun Zhou, Qisheng Yao, Xinbo Sun, Xiaoxin Gong, Yong Yang, Congbo Chen, Guang Shan
Hypoxic acute kidney injury (AKI) is often incompletely repaired and leads to chronic kidney disease (CKD), which is characterized by tubulointerstitial inflammation and fibrosis. The Slit2 family of secreted glycoproteins is expressed in the kidney, it has been shown to exert an anti-inflammatory activity and prevent ischemic renal injury in vivo. However, whether Slit2 reduces renal fibrosis and inflammation after hypoxic and inflammatory epithelial cells injury in vitro remains unknown. In this study, we aimed to evaluate whether Slit2 ameliorated fibrosis and inflammation in two renal epithelial cells line challenged with hypoxia and lipopolysaccharide (LPS)...
February 3, 2017: Experimental Cell Research
https://www.readbyqxmd.com/read/28115850/gold-quercetin-nanoparticles-prevent-metabolic-endotoxemia-induced-kidney-injury-by-regulating-tlr4-nf-%C3%AE%C2%BAb-signaling-and-nrf2-pathway-in-high-fat-diet-fed-mice
#5
Min-Xuan Xu, Ming Wang, Wei-Wei Yang
High-fat diet-induced metabolic syndrome followed by chronic kidney disease caused by intestinal endotoxemia have received extensive attention. Toll-like receptor 4 (TLR4)/nuclear factor-kappa B (NF-κB) and oxidative stress-related Nrf2/Keap1 were regarded as the key target points involved in metabolic inflammation and kidney injury. However, the molecular mechanism of interaction between TLR4/NF-κB and Nrf2 activation in high-fat diet-induced renal injury is not absolutely understood. Quercetin, a natural product, has been reported to possess antitumor and anti-inflammatory effects...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28099145/down-regulation-of-toll-like-receptor-4-alleviates-intestinal-ischemia-reperfusion-injury-and-acute-lung-injury-in-mice
#6
Qiankun Zhu, Guizhen He, Jie Wang, Yukang Wang, Wei Chen, Tai Guo
Intestinal ischemia reperfusion (IR) injury is a critical problem, which can cause intestinal injury locally and acute lung injury (ALI) distally by inflammatory responses and oxidative stress. Toll-like receptor 4 (TLR4) is involved in innate immune and inflammatory responses. This study was to determine whether TLR4 mutant can attenuate intestinal and lung injuries after intestinal IR. Wild type (WT) and TLR4 mutant mice were submitted to intestinal IR by occluding the superior mesenteric artery. Histological assessment of the intestine and the lung were conducted by HE staining...
January 13, 2017: Oncotarget
https://www.readbyqxmd.com/read/28093813/nerolidol-protects-against-lps-induced-acute-kidney-injury-via-inhibiting-tlr4-nf-%C3%AE%C2%BAb-signaling
#7
Lu Zhang, Dandan Sun, Yan Bao, Yan Shi, Yan Cui, Minghao Guo
Acute kidney injury (AKI) is a critical care syndrome, resulting in acute reduction of renal function and up to 22% mortality of hospitalized patients. Nerolidol is a major component in several essential oils that possesses various pharmacological properties. The present study aimed to investigate the potential effect of nerolidol on lipopolysaccharide (LPS)-induced AKI. Nerolidol dose-dependently reduced the pathological injuries of kidney induced by LPS in rats. Nerolidol significantly decreased the levels of blood urea nitrogen and creatinine in LPS-treated rats in a dose-dependent manner...
January 17, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28028753/chlorogenic-acid-attenuates-lipopolysaccharide-induced-acute-kidney-injury-by-inhibiting-tlr4-nf-%C3%AE%C2%BAb-signal-pathway
#8
Han-Yang Ye, Jian Jin, Ling-Wei Jin, Yan Chen, Zhi-Hong Zhou, Zhan-Yuan Li
Chlorogenic acid (CGA), a polyphenolic compound, exists widely in medicinal herbs, which has been shown a strong antioxidant and anti-inflammatory effect. This study investigated the protective effects and mechanism of CGA on lipopolysaccharide (LPS)-induced acute kidney injury (AKI). Treatment of CGA successfully ameliorates LPS-induced renal function and pathological damage. Moreover, CGA dose-dependently suppressed LPS-induced blood urea nitrogen (BUN), creatinine levels, and inflammatory cytokines TNF-α, IL-6, and IL-1β in serum and tissue...
December 27, 2016: Inflammation
https://www.readbyqxmd.com/read/28017324/the-pattern-recognition-receptor-mincle-is-essential-for-maintaining-the-m1-macrophage-phenotype-in-acute-renal-inflammation
#9
Lin L Lv, Patrick Ming-Kuen Tang, Chun J Li, Yong K You, Jinhong Li, Xiao-Ru Huang, Jun Ni, Min Feng, Bi C Liu, Hui-Yao Lan
Mincle (macrophage-inducible C-type lectin, Clec4e) is a transmembrane pattern recognition receptor involving the innate immunity, but its role in kidney disease is still unexplored. In the obstructed kidney of the unilateral ureteral obstruction model of renal injury, Mincle was specifically detected in the infiltrating M1 macrophages (CD68(+)iNOS(+) cells) on day one but was rapidly reduced following reduction of M1 macrophages during the progression of kidney injury. Interestingly, Mincle-expressing macrophages were progressively increased in the cisplatin-induced acute kidney injury model, where iNOS expression was detected in the CD68(+) cells following Mincle induction...
December 22, 2016: Kidney International
https://www.readbyqxmd.com/read/27943385/m2000-%C3%AE-d-mannuronic-acid-as-a-novel-antagonist-for-blocking-the-tlr2-and-tlr4-downstream-signaling-pathway
#10
Somaye Aletaha, Vahid Asgary, Leila Haddad, Maryam Roozbehkia, Reza Ahangari Cohan, Mahdi Mahmoudi, Abbas Mirshafiey
To date, selective blockade of Toll-like receptor (TLR) signaling have been developed as a new approach for treatment many inflammatory diseases. Since β-D-mannuronic acid (M2000) has been known as an anti-inflammatory molecule in several experimental models, we investigated the antagonistic effects of M2000 on TLR2 and TLR4 downstream signaling transduction pathway in human embryonic kidney (HEK) 293 cell lines overexpressing TLR2/CD14 and the TLR4/MD2/CD14 complex, respectively. M2000 effectively inhibited mRNA expression of MyD88 and p65, major subunit of nuclear factor-κB, in HEK293 cells stimulated by Lipoteichoic acid (LTA, a TLR2 agonist) and Lipopolysaccharide (LPS, a TLR4 agonist) with no evidence of cytotoxicity...
December 10, 2016: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/27916733/sirt1-regulates-lipopolysaccharide-induced-cd40-expression-in-renal-medullary-collecting-duct-cells-by-suppressing-the-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#11
Qin-Qin Lin, Yuan-Wen Geng, Zhong-Wei Jiang, Zhen-Jun Tian
AIMS: Recent evidence indicates that sirtuin1 (SIRT1), an NAD(+)-dependent deacetylase, exerts a protective effect against inflammatory kidney injury by suppressing pro-inflammatory cytokines production. The co-stimulatory molecule, CD40, is expressed in a variety of inflammatory diseases in the kidney. Here, we aimed to investigate the potential effect of SIRT1 on CD40 expression induced by lipopolysaccharide (LPS) and to disclose the underlying mechanisms in renal inner medullary collecting duct (IMCD) cells...
February 1, 2017: Life Sciences
https://www.readbyqxmd.com/read/27916228/corrigendum-to-tenuigenin-exhibits-protective-effects-against-lps-induced-acute-kidney-injury-via-inhibiting-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway-eur-j-pharmacol-791-2016-229-234
#12
Fu Haiyan, Hu Zhansheng, Di Xingwei, Zhang Qiuhong, Zhou Rongbin, Du Hongyang
No abstract text is available yet for this article.
December 5, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/27897392/toll-like-receptor-4-signalling-mediates-inflammation-in-skeletal-muscle-of-patients-with-chronic-kidney-disease
#13
Daniela Verzola, Alice Bonanni, Antonella Sofia, Fabrizio Montecucco, Elena D'Amato, Valeria Cademartori, Emanuele Luigi Parodi, Francesca Viazzi, Chiara Venturelli, Giuliano Brunori, Giacomo Garibotto
BACKGROUND: Inflammation in skeletal muscle is implicated in the pathogenesis of insulin resistance and cachexia but why uremia up-regulates pro-inflammatory cytokines is unknown. Toll-like receptors (TLRs) regulate locally the innate immune responses, but it is unknown whether in chronic kidney disease (CKD) TLR4 muscle signalling is altered. The aim of the study is to investigate whether in CKD muscle, TLRs had abnormal function and may be involved in transcription of pro-inflammatory cytokine...
October 18, 2016: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/27877060/anti-inflammatory-and-immunomodulatory-effects-of-aquaphilus-dolomiae-extract-on-in-vitro-models
#14
Marie-Françoise Aries, Hélène Hernandez-Pigeon, Clémence Vaissière, Hélène Delga, Antony Caruana, Marguerite Lévêque, Muriel Bourrain, Katia Ravard Helffer, Bertrand Chol, Thien Nguyen, Sandrine Bessou-Touya, Nathalie Castex-Rizzi
BACKGROUND: Atopic dermatitis (AD) is a common skin disease characterized by recurrent pruritic inflammatory skin lesions resulting from structural and immune defects of the skin barrier. Previous studies have shown the clinical efficacy of Avène thermal spring water in AD, and a new microorganism, Aquaphilus dolomiae was suspected to contribute to these unique properties. The present study evaluated the anti-inflammatory, antipruritic, and immunomodulatory properties of ES0, an original biological extract of A...
2016: Clinical, Cosmetic and Investigational Dermatology
https://www.readbyqxmd.com/read/27829992/hmgb1-tlr4-signaling-participates-in-renal-ischemia-reperfusion-injury-and-could-be-attenuated-by-dexamethasone-mediated-inhibition-of-the-erk-nf-%C3%AE%C2%BAb-pathway
#15
Jiong Zhang, Jumei Xia, Ying Zhang, Fang Xiao, Jin Wang, Hongyu Gao, Yanyan Liu, Song Rong, Ying Yao, Gang Xu, Junhua Li
Studies have shown that the HMGB1-TLR4 (High-mobility group protein B1, toll-like receptor 4) pathway participates in renal ischemic reperfusion injury (IRI) and that dexamethasone (DEX) could protect the kidney against IRI. This study aims to examine the protective effects of DEX on renal IRI and further explore the possible mechanism of action. During mouse renal IRI, HMGB1-TLR4 signals changed markedly including HMGB1 translocation and TLR4 up-regulation, resulting in histological damage and an increase in MPO expression...
2016: American Journal of Translational Research
https://www.readbyqxmd.com/read/27829421/bovine-lactoferrin-free-of-lipopolysaccharide-can-induce-a-proinflammatory-response-of-macrophages
#16
Nada Zemankova, Katarina Chlebova, Jan Matiasovic, Jana Prodelalova, Jan Gebauer, Martin Faldyna
BACKGROUND: Lactoferrin (LF) is an 80 kDa glycoprotein which is known for its effects against bacteria, viruses and other pathogens. It also has a high potential in nutrition therapy and welfare of people and a variety of animals, including piglets. The ability to bind lipopolysaccharide (LPS) is one of the described anti-inflammatory mechanisms of LF. Previous studies suggested that cells can be stimulated even by LPS-free LF. Therefore, the aim of our study was to bring additional information about this possibility...
November 10, 2016: BMC Veterinary Research
https://www.readbyqxmd.com/read/27813491/hyperin-protects-against-lps-induced-acute-kidney-injury-by-inhibiting-tlr4-and-nlrp3-signaling-pathways
#17
Gong Chunzhi, Li Zunfeng, Qin Chengwei, Bu Xiangmei, Yu Jingui
Hyperin is a flavonoid compound derived from Ericaceae, Guttifera, and Celastraceae that has been shown to have various biological effects, such as anti-inflammatory and anti-oxidant effects. However, there is no evidence to show the protective effects of hyperin on lipopolysaccharide (LPS)-induced acute kidney injury (AKI). Therefore, we investigated the protective effects and mechanism of hyperin on LPS-induced AKI in mice. The levels of TNF-α, IL-6, and IL-1β were tested by ELISA. The effects of hyperin on blood urea nitrogen (BUN) and serum creatinine were also detected...
November 1, 2016: Oncotarget
https://www.readbyqxmd.com/read/27690015/gspe-inhibits-hmgb1-release-attenuating-renal-ir-induced-acute-renal-injury-and-chronic-renal-fibrosis
#18
Juan Zhan, Kun Wang, Conghui Zhang, Chunxiu Zhang, Yueqiang Li, Ying Zhang, Xiaoyan Chang, Qiaodan Zhou, Ying Yao, Yanyan Liu, Gang Xu
Grape seed proanthocyanindin extract (GSPE) is a polyphenolic bioflavonoid derived from grape seeds and has been widely studied for its potent antioxidant, anti-inflammatory and antitumor activities. HMGB1 is a newly discovered danger-associated molecular pattern (DAMP) that has potent proinflammatory effects once released by necrotic cells. However, the effect of GSPE on the HMGB1, and the relationship of those two with acute kidney injury and chronic kidney fibrosis are unknown. This study aimed to investigate the impact of GSPE on acute kidney injury and chronic fibrosis...
2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27648011/genetic-variants-in-toll-like-receptor-4-gene-and-their-association-analysis-with-estimated-glomerular-filtration-rate-in-mexican-american-families
#19
Farook Thameem, Sobha Puppala, Vidya S Farook, Balakuntalam S Kasinath, John Blangero, Ravindranath Duggirala, Hanna E Abboud
BACKGROUND/AIM: Toll-like receptor 4 (TLR4) is one of the regulators of the innate immune response. Genetic variations in TLR4 have been associated with inflammatory diseases, including type 2 diabetes. However, to our knowledge, there are no reports on the role of variations in TLR4 in chronic kidney disease susceptibility. The objective of this study is to determine whether the genetic variants in TLR4 are associated with the estimated glomerular filtration rate (eGFR), a measure of renal function...
August 2016: Cardiorenal Medicine
https://www.readbyqxmd.com/read/27616759/il-1%C3%AE-promotes-tubulointerstitial-injury-in-%C3%A2-mpo-anca-associated-glomerulonephritis%C3%A2
#20
Manabu Tashiro, Yoshie Sasatomi, Renya Watanabe, Maho Watanabe, Katsuhisa Miyake, Yasuhiro Abe, Tetsuhiko Yasuno, Kenji Ito, Naoko Ueki, Aki Hamauchi, Ritsuya Noda, Satoshi Hisano, Hitoshi Nakashima
BACKGROUND: It is widely accepted that tubulointerstitial injury (TII) is caused by glomerular injury (GI) in glomerular diseases. Glomerular endocapillary inflammation may result in crescent formation and exuded protein leakage, which may induce TII in antineutrophil cytoplasmic antibody-associated glomerulonephritis (ANCAGN). However, some reports have indicated a glomerulonephritis-independent mechanism of TII in ANCAGN. The aim of this study was to determine the principle cytokines correlated with TII severity and to elucidate a characteristic mechanism for TII in ANCAGN...
October 2016: Clinical Nephrology
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