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Shujun Zhou, Gui Wang, Wenbin Zhang
The present study aimed to investigate the effects of the Toll-like receptor (TLR)4/myeloid differentiation primary response (MyD)88 signaling pathway on sepsis-associated acute respiratory distress syndrome (ARDS) in rats, and the involvement of macrophage activation and the inflammatory response. A total of 36 specific pathogen-free male Sprague-Dawley rats were selected to establish the rat model of sepsis-associated ARDS using cecal ligation and puncture (CLP). Rats were assigned into the Ab (anti-TLR4 monoclonal antibody)-CLP, CLP and Sham groups...
April 2018: Experimental and Therapeutic Medicine
Lora J Kasselman, Nicholas A Vernice, Joshua DeLeon, Allison B Reiss
Cardiovascular disease associated with obesity and autoimmunity is the leading cause of death in these populations and significant residual risk remains despite current treatment approaches. Obesity, type 1 diabetes mellitus (T1DM), rheumatoid arthritis (RA), and systemic lupus erythematosus (SLE) are linked to chronic inflammation, and subjects with these disorders have characteristic shifts in their gut microbiome composition. Recent data suggest that alterations in gut microbial and metabolic composition may be responsible, in part, for induction of chronic inflammation, thus promoting cardiovascular disease...
March 2, 2018: Atherosclerosis
Xue-Na Zheng, Jun Yang, Tao Xie, Bin Guo, Zhi-Qiang Xie, Li-Na Xie, Xue-Fen Wu, Gang-Zhu Hu, Mai-Lan Liu, Zeng-Hui Yue
OBJECTIVE: To observe the effect of herbal cake-separated moxibustion on blood lipid-apoprotein levels and the expression of Toll-like receptor 2 (TLR 2), TLR 4 and nuclear factor kappa B(NF-κB) mRNAs in atherosclerotic (AS) vulnerable plaques of hyperglycemia rabbits, so as to explore its mechanism underlying improvement of atherosclerosis. METHODS: Sixty New Zealand rabbits were randomly divided into 5 groups: control, model, direct moxibustion, herbal-cake-separated moxibustion and medication groups( n =12 rabbits in each group)...
February 25, 2018: Zhen Ci Yan Jiu, Acupuncture Research
J J Nieto-Fontarigo, F J Salgado, M E San-José, M J Cruz, A Casas-Fernández, M J Gómez-Conde, L Valdés-Cuadrado, M Á García-González, P Arias, M Nogueira, F J González-Barcala
LPS-ligation to CD14/TLR-4 on monocytes/macrophages triggers the production of IL-12-family cytokines. IL12/18 promote TH1 -differentiation, counteracting the TH2 -driven asthma. Therefore, CD14 modulation could alter the TH2 -differentiation and should be taken into account when studying asthma. To analyse the alteration in CD14 levels and its association with CD14 (-159 C/T) SNP (rs2569190) in Caucasian adults with stable allergic asthma, we performed a cross-sectional study (277 healthy subjects vs. 277 patients) where clinical parameters, CD14 values and the CD14 (-159 C/T) SNP were studied...
March 7, 2018: Scientific Reports
Zhi-Yin Lou, Jie Cheng, Xiao-Rong Wang, Yong-Fei Zhao, Jing Gan, Guo-Yu Zhou, Zhen-Guo Liu, Bao-Guo Xiao
Cannabinoid 1 receptor (CB1 R) regulates the neuro-inflammatory and neurodegenerative damages of experimental autoimmune encephalomyelitis (EAE) and of multiple sclerosis (MS). The mechanism by which CB1 R inhibition exerts inflammatory effects is still unclear. Here, we explored the cellular and molecular mechanisms of CB1 R in the treatment of EAE by using a specific and selective CB1 R antagonist SR141716A. Our study demonstrated that SR141716A accelerated the clinical onset and development of EAE, accompanied by body weight loss...
April 15, 2018: Journal of Neuroimmunology
Mahboobeh Ghasemzadeh Rahbardar, Bahareh Amin, Soghra Mehri, Seyed Javad Mirnajafi-Zadeh, Hossein Hosseinzadeh
BACKGROUND: We aimed to investigate the potential prophylactic and curative effects of rosmarinic acid, one of the main constituents of rosemary, on the neuropathic pain induced by chronic constriction injury (CCI) in rats. MATERIALS AND METHODS: CCI was used to induce peripheral neuropathic pain. In prophylactic groups, rosmarinic acid (10, 20, and 40 mg/kg, i.p.) was administered from the day of surgery (day 0) for 14 days. In treatment group, rosmarinic acid (40 mg/kg) was given from day 5 (after the pain was established), for 7 days...
February 1, 2018: Phytomedicine: International Journal of Phytotherapy and Phytopharmacology
Qian He, Xueshan Zhao, Siwei Bi, Yu Cao
BACKGROUND Lung ischemia/reperfusion injury (LIRI) is a medical problem featuring pulmonary dysfunction and damage. The present study aimed to investigate the protective effects of erythropoietin (EPO), which has been reported to be an anti-inflammatory agent, on LIRI through inhibiting the TLR-4/NF-κB signaling pathway. MATERIAL AND METHODS All rats were randomly divided into 3 groups (n=8): a control group, a vehicle+LIRI group, and an EPO+LIRI group. LIRI included 90-min ischemia and 120-min reperfusion, while RhEpo was administered (3 kU/kg) intraperitoneally 2 h before the operation...
March 1, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
Anicet Christel Maloupazoa Siawaya, Ofilia Mvoundza Ndjindji, Eliane Kuissi Kamgaing, Amandine Mveang-Nzoghe, Chérone Nancy Mbani Mpega, Marielle Leboueny, Roselyne Kengue Boussougou, Armel Mintsa Ndong, Paulin N Essone, Joel Fleury Djoba Siawaya
Pathogen sensing and recognition through pattern recognition receptors, and subsequent production of pro-inflammatory cytokines, is the cornerstone of the innate immune system. Despite the fact that HIV-exposed uninfected (HEU) infants are prone to serious bacterial infections, no study has focused on the functionality of their bacteria recognition system. This is the first study to investigate baseline levels of three critically important immune response molecules in this population: complement component (C)-3, toll-like receptor (TLR)-4, and C-reactive protein (CRP)...
2018: Frontiers in Immunology
Morteza Hosseinzadeh, Pedram Ahmadpoor, Mir Saeed Yekaninejad, Fatemeh Pourrezagholi, Farshad Foroughi, Mina Ghorbanpour, Mehri Barabadi, Sanaz K Shahbaz, Ghasem Solgi, Aliakbar Amirzargar
This cohort intends to determine the sequential dynamic changes in Toll-like receptor (TLR)-4, TLR-2, and myeloid differentiation primary response gene 88 (MYD88) mRNA expressions in PBMCs and biopsy samples from kidney allograft recipients in relation to graft function. This study enrolled 52 renal transplant patients, 27 with well functioning graft (WFG) and 25 graft dysfunction (GD). Peripheral blood samples pre- and post-transplantation (days 2, 90 and 180) were collected to analyze mRNA expression levels of TLR-2, TLR-4, and MYD88 genes in relation to allograft function during one-year follow up...
February 13, 2018: Transplant Immunology
Salma Mukhtar Mir, Halley Gora Ravuri, Raj Kumar Pradhan, Sairam Narra, Jerald Mahesh Kumar, Madhusudana Kuncha, Sanjit Kanjilal, Ramakrishna Sistla
Sepsis-induced acute kidney injury (AKI) is responsible for 70-80% mortality in intensive care patients due to elevated levels of endotoxin, Lipopolysaccharide (LPS) caused by gram-negative infections. Ferulic acid (FA), a phenolic phytochemical is known for its renal protection on various induced models of nephrotoxicity. However, the curative effect of FA in LPS-induced AKI is not well studied. This study aimed to investigate the effect of FA on LPS-induced AKI in mice model and to understand the protective mechanisms involved, to provide evidence for FA in the treatment of AKI...
February 12, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
Sanjay Kumar, Chongxiao Chen, Nagaraju Indugu, Gabriela Orosco Werlang, Manpreet Singh, Woo Kyun Kim, Harshavardhan Thippareddi
Development of antibiotic resistance in foodborne pathogens, Salmonella spp. and Campylobacter, is a public health concern. Public demand to reduce the use of sub-therapeutic antibiotic growth promoters (AGP) in poultry feeding has resulted in greater adoption of antibiotic-free poultry production systems. There is a need to understand the effects of AGP removal from poultry feed on gut microbiota and its impact on prevalence of foodborne pathogens. The effect of antibiotic withdrawal from poultry feed on gut microbial community, host performance and immunity, and prevalence of Salmonella and Campylobacter was evaluated...
2018: PloS One
Jianjun Yuan, Xueli Zhang, Rusen Zhu, Zijian Cui, Wei Hu
The present study used a spinal cord injury (SCI) model to evaluate whether sparstolonin B was able to prevent SCI, and to investigate the underlying signaling mechanism. Sparstolonin B attenuated the SCI‑induced Batto, Beattie and Bresnahan score and water content in rats. Sparstolonin B attenuated the mRNA expression of proinflammatory cytokines interleukin (IL)‑18, IL‑6, IL‑1β, and IL‑23, decreased the levels of tumor necrosis factor‑α and interferon‑γ, and decreased caspase‑3 activity and apoptosis regulator Bax protein expression in SCI rats...
February 6, 2018: Molecular Medicine Reports
Lijing Geng, Wei Zhou, Bing Liu, Xinyun Wang, Bo Chen
Docosahexaenoic acid (DHA) oil is an important polyunsaturated fatty acid for the human body. Evidence has demonstrated that DHA is beneficial for inhibiting mammary carcinogenesis. However, the mechanisms of DHA mediating apoptosis induction have not been fully elucidated. Thus, in the present study, the activity levels of total-superoxide dismutase (t-SOD), catalase (CAT), glutathione-peroxidase (GSH-PX) and the concentration of malondialdehyde (MDA) were determined in DHA oil-treated human malignant breast tissues...
March 2018: Oncology Letters
Roy Altman, Asheesh Bedi, Ajay Manjoo, Faizan Niazi, Peter Shaw, Philip Mease
Objective Osteoarthritis (OA) is one of the leading causes of disability in the adult population. Common nonoperative treatment options include nonsteroidal anti-inflammatory drugs (NSAIDs), intra-articular corticosteroids, and intra-articular injections of hyaluronic acid (HA). HA is found intrinsically within the knee joint providing viscoelastic properties to the synovial fluid. HA therapy provides anti-inflammatory relief through a number of different pathways, including the suppression of pro-inflammatory cytokines and chemokines...
February 1, 2018: Cartilage
Pei-Hsun Sung, Fan-Yen Lee, Ling-Chun Lin, Kuan-Hung Chen, Hung-Sheng Lin, Pei-Lin Shao, Yi-Chen Li, Yi-Ling Chen, Kun-Chen Lin, Chun-Man Yuen, Hsueh-Wen Chang, Mel S Lee, Hon-Kan Yip
We tested the hypothesis that melatonin prevents brain death (BD) tissue extract (BDEX)-induced cardiac damage by suppressing inflammatory damage-associated molecular pattern (DAMP) signaling in rats. Six hours after BD induction, levels of a DAMP component (HMGB1) and inflammatory markers (TLR-2, TLR-4, MYD88, IκB, NF-κB, IL-1β, IFN-γ, TNF-α and IL-6) were higher in brain tissue from BD animals than controls. Levels of HMGB1 and inflammatory markers were higher in BDEX-treated H9C2 cardiac myoblasts than in cells treated with healthy brain tissue extract...
January 9, 2018: Oncotarget
Chen-Hui Gao, Hong-Liang Dong, Li Tai, Xiao-Ming Gao
Macrophages are multifunctional cells that perform diverse roles in health and disease and considered the main source of inflammatory cytokines in affected joints of patients with rheumatoid arthritis (RA). M2 macrophages are well known as anti-inflammation and wound-healing cells; however, recent evidence suggests that they can also promote inflammation in RA, although the underlying mechanism remains to be clarified. Based upon our recent finding that lactoferrin (LTF)-containing IgG immunocomplex (LTF-IC), found elevated in RA sera, potent activators of human monocytes/macrophages, we herein demonstrate that LTF-IC was able to elicit immediate proinflammatory cytokine production by M2-polarized human macrophages through coligation with CD14/toll-like receptor (TLR) 4 and FcγRIIa (CD32a)...
2018: Frontiers in Immunology
Young-Sun Lee, Doyeon Kim, Tae-Jun Kim, So Yeon Kim, Jae-Kwang Jung, Jae-Kap Choi, Hyon-Seung Yi, Jin-Seok Byun
The importance of toll-like receptor (TLR) 4 has been well documented in pathogenesis of steatohepatitis, however, little is known about the role of TLR3. In this study, we investigated whether the depletion of TLR3 modulate the hepatic injury in mice, and further try to provide mechanistic insight of TLR3-mediated modulation from diet-induced hepatic inflammation and fat accumulation. Hepatic steatosis and inflammatory response were developed by feeding wild type (WT) or TLR3 knockout mice with high-fat diet for 8 weeks...
February 1, 2018: Biochemical and Biophysical Research Communications
Y S Abulfadl, N N El-Maraghy, Aa Eissa Ahmed, S Nofal, Y Abdel-Mottaleb, O A Badary
Alzheimer's disease (AD) is characterized by a robust inflammatory response elicited by the accumulation and deposition of amyloid-β (Aβ) within the brain. Aβ induces detrimental inflammatory responses through toll-like receptors (TLRs) signaling pathway. Thymoquinone (TQ), the main active constituent of Nigella sativa oil, has been reported by several previous studies for its potent anti-inflammatory effect. The aim of this study is to elucidate the effect of TQ in improving learning and memory, using a rat model of AD induced by a combination of aluminum chloride (AlCl 3 ) and d-galactose (d-Gal)...
January 1, 2018: Human & Experimental Toxicology
Reid Oldenburg, Veronique Mayau, Jacques Prandi, Ainhoa Arbues, Catherine Astarie-Dequeker, Christophe Guilhot, Catherine Werts, Nathalie Winter, Caroline Demangel
Phenolic glycolipids (PGLs) are cell wall components of a subset of pathogenic mycobacteria, with immunomodulatory properties. Here, we show that in addition, PGLs exert antibactericidal activity by limiting the production of nitric oxide synthase (iNOS) in mycobacteria-infected macrophages. PGL-mediated downregulation of iNOS was complement receptor 3-dependent and comparably induced by bacterial and purified PGLs. Using Mycobacterium leprae PGL-1 as a model, we found that PGLs dampen the toll-like receptor (TLR)4 signaling pathway, with macrophage exposure to PGLs leading to significant reduction in TIR-domain-containing adapter-inducing interferon-β (TRIF) protein level...
2018: Frontiers in Immunology
Woon-Hae Kim, Hyun-Jin An, Jung-Yeon Kim, Mi-Gyeong Gwon, Hyemin Gu, Minji Jeon, Min-Kyung Kim, Sang-Mi Han, Kwan-Kyu Park
Periodontitis is a chronic inflammatory disease that contributes to the destruction of the gingiva. Porphyromonas gingivalis (P. gingivalis) can cause periodontitis via its pathogenic lipopolysaccharides (LPS). Melittin, a major component of bee venom, is known to have anti-inflammatory and antibacterial effects. However, the role of melittin in the inflammatory response has not been elucidated in periodontitis-like human keratinocytes. Therefore, we investigated the anti-inflammatory effects of melittin on a P...
February 5, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
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