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https://www.readbyqxmd.com/read/29793105/copd-rat-model-is-more-susceptible-to-cold-stress-and-pm-2-5-exposure-and-the-underlying-mechanism
#1
Kai Zhang, Lei Guo, Qiaozhen Wei, Quanquan Song, Jiangtao Liu, Jingping Niu, Li Zhang, Ye Ruan, Bin Luo
The purpose of this study is to verify the hypothesis that chronic obstructive pulmonary disease (COPD) model rat is more susceptible to cold stress and fine particulate matter (PM2.5 ) exposure than the healthy rat, and explore the related mechanism. COPD rat model, established with cigarette smoke and lipopolysaccharide intratracheal instillation, were exposed to cold stress (0 °C) and PM2.5 (0, 3.2, 12.8 mg/ml). After that, the levels of superoxide dismutase, inducible nitric oxide synthase (iNOS), tumor necrosis factor alpha (TNF-α), monocyte chemotactic protein 1 (MCP-1) and angiotensin Ⅱ (Ang-Ⅱ) in lung were measured, as well as the expression levels of lung 8-hydroxy-2-deoxyguanosine (8-OHdG), nuclear factor kappa B (NF-κB), heme-oxygenase-1 (HO-1) and nuclear factor erythroid-2-related factor 2 (Nrf2)...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29792849/the-role-and-mechanism-of-k-ca-3-1-channels-in-human-monocyte-migration-induced-by-palmitic-acid
#2
Xiao-Zhen Ma, Zheng-Da Pang, Jun-Hong Wang, Zheng Song, Li-Mei Zhao, Xiao-Jun Du, Xiu-Ling Deng
Monocyte migration into diseased tissues contributes to the pathogenesis of diseases. Intermediate-conductance Ca2+ -activated K+ (KCa 3.1) channels play an important role in cell migration. However, the role of KCa 3.1 channels in mediating monocyte migration induced by palmitic acid (PA) is still unclear. Using cultured THP-1 cells and peripheral blood mononuclear cells from healthy subjects, we investigated the role and signaling mechanisms of KCa 3.1 channels in mediating the migration induced by PA. Using methods of Western blotting analysis, RNA interference, cell migration assay and ELISA, we found that PA-treated monocytes exhibited increment of the protein levels of KCa 3...
May 21, 2018: Experimental Cell Research
https://www.readbyqxmd.com/read/29791472/pioglitazone-abolishes-autistic-like-behaviors-via-the-il-6-pathway
#3
Thiago Berti Kirsten, Renato C Casarin, Maria M Bernardi, Luciano F Felicio
Autism is characterized by social deficits, communication abnormalities, and repetitive behaviors. The risk factors appear to include genetic and environmental conditions, such as prenatal infections and maternal dietary factors. Previous investigations by our group have demonstrated that prenatal exposure to lipopolysaccharide (LPS), which mimics infections by gram-negative bacteria, induces autistic-like behaviors. No effective treatment yet exists for autism. Therefore, we used our rat model to test a possible treatment for autism...
2018: PloS One
https://www.readbyqxmd.com/read/29790294/jak-stat-blockade-alters-synovial-bioenergetics-mitochondrial-function-and-pro-inflammatory-mediators-in-rheumatoid-arthritis
#4
Trudy McGarry, Carl Orr, Sarah Wade, Monika Biniecka, Siobhan Wade, Lorna Gallagher, Candice Low, Douglas J Veale, Ursula Fearon
OBJECTIVE: To examine the effect of tofacitinib on metabolic activity, mitochondrial function and pro-inflammatory mechanisms in Rheumatoid Arthritis. METHODS: Ex-vivo RA synovial explants and primary RA synovial fibroblasts (RAFLS) were cultured with tofacitinib (1μM). RAFLS bioenergetics was assessed using the XF24-Flux-analyser, and key metabolic genes by real-time PCR. Mitochondrial function was assessed using specific cell fluorescent probes and by mitochondrial gene arrays...
May 23, 2018: Arthritis & Rheumatology
https://www.readbyqxmd.com/read/29788096/pnaktide-ameliorates-renal-interstitial-fibrosis-through-inhibition-of-sodium-potassium-adenosine-triphosphatase-mediated-signaling-pathways-in-unilateral-ureteral-obstruction-mice
#5
Xi Cheng, Yi Song, Yu Wang
Background: Sodium-potassium adenosine triphosphatase (Na/K-ATPase) has been shown to regulate Src activity by combining with Src to keep it in an inactive form. We previously reported that Na/K-ATPase was downregulated in unilateral ureteral obstruction (UUO) animals. In this study, we examined whether inhibition of Na/K-ATPase-mediated Src signaling pathways ameliorated renal interstitial fibrosis induced by UUO. Methods: UUO was performed on male C57BL/6J mice...
May 17, 2018: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/29787986/anti-inflammatory-effects-and-mechanism-of-the-total-flavonoids-from-artemisia-scoparia-waldst-et-kit-in-vitro-and-in-vivo
#6
Xue Wang, Hua Huang, Xueping Ma, Linlin Wang, Chong Liu, Biyu Hou, Shengqian Yang, Li Zhang, Guanhua Du
Artemisia scoparia Waldst. et Kit. is traditionally used for the treatment of jaundice urinary retention, itching wet sores, infectious icteric hepatitis and influenza in Uighur medicine. This study aimed to further illuminate the anti-inflammatory effects and mechanism of the total flavonoids (ASTF) from Artemisia scoparia Waldst. et Kit. In vitro, RAW 264.7 cells were pretreated with ASTF 1 h before stimulation with LPS (1 μg/mL) for 24 h. Then, the concentrations of NO, PGE2 , TNF-α, IL-6 and MCP-1 in the medium were determined...
May 19, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29787756/fibronectin-type-iii-domain-containing-4-attenuates-hyperlipidemia-induced-insulin-resistance-via-suppression-of-inflammation-and-er-stress-through-ho-1-expression-in-adipocytes
#7
Wonjae Lee, Subin Yun, Geum Hee Choi, Tae Woo Jung
Although Fibronectin Type III Domain Containing 4 (FNDC4) has been reported to be involved in the modulation of inflammation in macrophages, its effects on inflammation and insulin resistance in adipose tissue are unknown. In the current study, we investigated the effects of FNDC4 on hyperlipidemia-mediated endoplasmic reticulum (ER) stress, inflammation, and insulin resistance in adipocytes via the AMP-activated protein kinase (AMPK)/heme oxygenase-1 (HO-1)-mediated pathway. Hyperlipidemia-induced nuclear factor κB (NFκB), inhibitory κBα (IκBα) phosphorylation, and pro-inflammatory cytokines such as TNFα and MCP-1 were markedly mitigated by FNDC4...
May 19, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29787588/angiogenic-and-pleiotropic-effects-of-vegf165-and-hgf-combined-gene-therapy-in-a-rat-model-of-myocardial-infarction
#8
Pavel I Makarevich, Konstantin V Dergilev, Zoya I Tsokolaeva, Maria A Boldyreva, Evgeniy K Shevchenko, Evgeny V Gluhanyuk, Julia O Gallinger, Mikhail Yu Menshikov, Yelena V Parfyonova
Since development of plasmid gene therapy for therapeutic angiogenesis by J. Isner this approach was an attractive option for ischemic diseases affecting large cohorts of patients. However, first placebo-controlled clinical trials showed its limited efficacy questioning further advance to practice. Thus, combined methods using delivery of several angiogenic factors got into spotlight as a way to improve outcomes. This study provides experimental proof of concept for a combined approach using simultaneous delivery of VEGF165 and HGF genes to alleviate consequences of myocardial infarction (MI)...
2018: PloS One
https://www.readbyqxmd.com/read/29787569/association-between-il-6-production-in-synovial-explants-from-rheumatoid-arthritis-patients-and-clinical-and-imaging-response-to-biologic-treatment-a-pilot-study
#9
Martin Andersen, Mikael Boesen, Karen Ellegaard, Kalle Söderström, Niels H Søe, Pieter Spee, Ulrik G W Mørch, Søren Torp-Pedersen, Else M Bartels, Bente Danneskiold-Samsøe, Lars Karlsson, Henning Bliddal
INTRODUCTION: The need for biomarkers which can predict disease course and treatment response in rheumatoid arthritis (RA) is evident. We explored whether clinical and imaging responses to biologic disease modifying anti-rheumatic drug treatment (bDMARD) were associated with the individual's mediator production in explants obtained at baseline. METHODS: RA Patients were evaluated by disease activity score 28 joint C-reactive protein (DAS 28-)), colour Doppler ultrasound (CDUS) and 3 Tesla RA magnetic resonance imaging scores (RAMRIS)...
2018: PloS One
https://www.readbyqxmd.com/read/29785672/aberrant-t-cell-subsets-and-cytokines-expression-profile-in-systemic-lupus-erythematosus
#10
Haiyan Zhou, Bailong Hu, Niwen Huang, Xiangang Mo, Wei Li, Bei Zhang, Bo Wei, Mingzhu Gao, Yiming Wang, Xingde Liu, Joshua Liao
To assess T cell subsets and levels of chemokines and cytokines in patients with SLE and determine their relationships between disease activity and organ involvement. Blood samples from SLE patients (n = 24) and healthy controls (n = 36) were analyzed. Frequency of circulating follicular help T cells (Tfh), central memory T cells (Tcm), effector memory T cells (Tem), and naïve T cell subsets was enumerated and their surface markers expression of inducible T cell co-stimulator (ICOS) and programmed death 1(PD-1) protein was examined by flow cytometry...
May 22, 2018: Clinical Rheumatology
https://www.readbyqxmd.com/read/29785210/adipose-tissue-derived-cytokines-and-their-correlations-with-clinical-characteristics-in-vietnamese-patients-with-type-2-diabetes-mellitus
#11
Nguyen Linh Toan, Nguyen Van Hoan, Doan Viet Cuong, Nguyen Viet Dung, Phan The Dung, Ngo Thu Hang, Do Thi Huyen Dieu, Dang Thanh Chung, Ho Anh Son, Pham Xuan Phong, George Binh Lenon, Doan Van De, Hoang Van Tong
Background: Adipokines are involved in the pathogenesis of metabolic disorders including obesity and type 2 diabetes mellitus (T2DM). This study investigates the levels of leptin, resistin, visfatin, secreted frizzled-related protein 5 (SFRP5), monocyte chemoattractant protein-1 (MCP-1) and retinol-binding protein 4 (RBP4) and their correlations with clinical parameters of overweight and T2DM. Methods: We recruited overweight 50 patients with T2DM, 88 non-overweight patients with T2DM, 29 overweight and 100 non-overweight individuals devoid of T2DM for this study...
2018: Diabetology & Metabolic Syndrome
https://www.readbyqxmd.com/read/29785126/impact-of-targeting-transforming-growth-factor-%C3%AE-2-with-antisense-ot-101-on-the-cytokine-and-chemokine-profile-in-patients-with-advanced-pancreatic-cancer
#12
Osmond J D'Cruz, Sanjive Qazi, Larn Hwang, Kevin Ng, Vuong Trieu
Background: Overexpression of the cytokine - transforming growth factor-beta 2 (TGF-β2) - has been implicated in the malignant progression of pancreatic cancer (PAC). OT-101 (trabedersen) is an antisense oligodeoxynucleotide designed to target the human TGF-β2 mRNA. In a Phase I/II study, OT-101 treatment with subsequent chemotherapy was characterized by outstanding overall survival (OS) in patients with PAC. Objective: This study sought to identify 1) co-regulated sets of cyto-/chemokines; 2) potential mechanisms that link TGF-β receptor type 2 receptor inhibition that may result in the induction of a cytokine storm; and 3) predictive biomarkers for OS outcome in OT-101-treated patients with PAC...
2018: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29783731/-lactobacillus-plantarum-strain-ln4-attenuates-diet-induced-obesity-insulin-resistance-and-changes-in-hepatic-mrna-levels-associated-with-glucose-and-lipid-metabolism
#13
Eunjung Lee, So-Ra Jung, So-Young Lee, Na-Kyoung Lee, Hyun-Dong Paik, Seong-Il Lim
The prevalence of obesity and associated metabolic disorders, including diabetes and cardiovascular disease, is rapidly becoming a severe global health problem. Recent reports have suggested that the alteration of the gut ecosystem through the consumption of probiotics and fermented foods, such as yogurt and Kimchi, can significantly impact obesity and Type 2 diabetes (T2D)-related biomarkers. In this study, we screened over 400 strains of lactic acid bacteria (LAB) that were isolated from fermented foods to identify potent anti-obesogenic and diabetic probiotics in vitro...
May 19, 2018: Nutrients
https://www.readbyqxmd.com/read/29779831/interleukin-6-significantly-improves-predictive-value-of-systemic-inflammatory-response-syndrome-for-predicting-severe-acute-pancreatitis
#14
Saransh Jain, Shallu Midha, Soumya Jagannath Mahapatra, Swatantra Gupta, Manish Kumar Sharma, Baibaswata Nayak, Tony George Jacob, Shalimar, Pramod Kumar Garg
BACKGROUND: Predicting severe acute pancreatitis (AP) is important for triage, prognosis, and designing therapeutic trials. Persistent systemic inflammatory response syndrome (SIRS) predicts severe AP but its diagnostic accuracy is suboptimal. Our objective was to study if cytokine levels could improve the predictive value of clinical variables for the development of severe AP. METHODS: Consecutive patients with AP were included in a prospective cohort study at a tertiary care center...
May 14, 2018: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/29778672/defective-myd88-and-irak4-but-not-tlr-2-expression-in-hiv-individuals-with-latent-tuberculosis-infection
#15
Kamakshi Prudhula Devalraju, Venkata Sanjeev Kumar Neela, Ramulu Gaddam, Arunabala Chaudhury, Abhinav Van, Siva Sai Krovvidi, Ramakrishna Vankayalapati, Vijaya Lakshmi Valluri
HIV infection markedly increases the likelihood of latent tuberculosis infection progressing to active TB. Information on expression of TLR-2, myeloid differentiation factor (MyD88), IL-1R- associated kinase-4 (IRAK4) and nuclear factor kappa B (NF-kB) in HIV+LTBI+ and HIV+ patients with active TB disease is limited. We found significantly higher percentages of CD14+TLR2+ cells in PBMCs of HIV+LTBI+ patients compared to HIV-LTBI+ individuals. γ-irradiated Mtb was unable to induce MyD88, IRAK4 expression and IL-1β, MCP-1, IP-10 production in HIV+LTBI+ patients...
May 17, 2018: Cytokine
https://www.readbyqxmd.com/read/29778648/impact-of-insulin-on-the-intestinal-microcirculation-in-a-model-of-sepsis-related-hyperglycemia
#16
Alexa Caldwell, Jan Niklas Morick, Anne-Marie Jentsch, Annette Wegener, Dragan Pavlovic, Nadia Al-Banna, Christian Lehmann
BACKGROUND: Sepsis involves dysfunctional glucose metabolism. Among patients with sepsis, hyperglycemia is frequent and insulin administration has been evaluated for glycemic control to improve patient outcomes. Only few studies have examined the hyperglycemic microcirculation and the impact of insulin on the microvasculature in sepsis. OBJECTIVE: To study the functional capillary density (FCD) and leukocyte activation within the intestinal microcirculation in endotoxin-induced experimental sepsis...
May 17, 2018: Microvascular Research
https://www.readbyqxmd.com/read/29777873/cinnamaldehyde-protects-vsmcs-against-ox-ldl-induced-proliferation-and-migration-through-s-arrest-and-inhibition-of-p38-jnk-mapks-and-nf-%C3%AE%C2%BAb
#17
Weifeng Li, Wenbing Zhi, Jinmeng Zhao, Qing Yao, Fang Liu, Xiaofeng Niu
Cinnamaldehyde (Cin), as a traditional flavor constituent isolated from the bark of Cinnamonum cassia Presl, has been commonly used for - digestive, cardiovascular and immune system diseases. The pathology of vascular smooth muscle cells (VSMCs) accelerated the progression of atherosclerosis. In our study, we found that cinnamaldehyde significantly suppressed ox-LDL-induced VSMCs proliferation, migration and inflammatory cytokine overproduction, as well as foam cell formation in VSMCs and macrophages. Moreover, cinnamaldehyde inhibited the phosphorylation of p38, JNK and p65 NF-κB and increased heme oxygenase-1 (HO-1) activity...
May 16, 2018: Vascular Pharmacology
https://www.readbyqxmd.com/read/29775893/puerarin-prevents-vascular-endothelial-injury-through-suppression-of-nf-%C3%AE%C2%BAb-activation-in-lps-challenged-human-umbilical-vein-endothelial-cells
#18
Hua-Fei Deng, Sha Wang, Lian Li, Qin Zhou, Wan-Bei Guo, Xiao-Li Wang, Mei-Dong Liu, Ke Liu, Xian-Zhong Xiao
OBJECTIVE: In the present study, we aimed to explore the effects of puerarin on vascular endothelial cell injury induced by lipopolysaccharide (LPS) and its underlying mechanisms. METHODS: The cell viability and morphological changes were assessed using the cell counting kit-8 (CCK-8) assay and 4´,6-diamidino-2-phenylindole (DAPI) staining, respectively. The levels of tumor necrosis factor-alpha (TNF-α), interleukin-1β (IL-1β), monocyte/macrophage chemotactic protein-1 (MCP-1), IL-8, intercellular cell adhesion molecule-1 (ICAM-1), thrombomodulin (TM) and plasminogen activator inhibitor-1 (PAI-1) in cell culture supernatant were determined by the enzyme-linked immunosorbent assay (ELISA)...
May 15, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29773098/-polydatin-inhibits-cell-proliferation-and-expressions-of-inflammatory-cytokines-in-thp-1-cells-induced-by-ox-ldl-via-up-regulating-sirt1
#19
Yi Ma, Yunjun Ruan, Yuyan Wang, Saizhu Wu
Objective To investigate the effects of polydatin on cell proliferation and cytokine expression in THP-1 monocyte-derived macrophages (MDMs) induced by oxidized low-density lipoprotein (ox-LDL), and the possible mechanisms. Methods MDMs were divided into the control group (only treated with ordinary culture medium), ox-LDL group (treated wtih 80 μmol/L ox-LDL for 24 hours), polydatin treatment group (treated with 100 μmol/L polydatin for 2 hours prior to the treatment with 80 μmol/L ox-LDL for 24 hours) and EX-527 treatment group (treated with 10 μmol/L SIRT1 inhibitor EX-527 for 2 hours prior to the treatment with ox-LDL and polydatin)...
March 2018: Xi Bao Yu Fen Zi Mian Yi Xue za Zhi, Chinese Journal of Cellular and Molecular Immunology
https://www.readbyqxmd.com/read/29772789/downregulation-of-the-s1p-transporter-spinster-homology-protein-2-spns2-exerts-an-anti-fibrotic-and-anti-inflammatory-effect-in-human-renal-proximal-tubular-epithelial-cells
#20
Olivier Blanchard, Bisera Stepanovska, Manuel Starck, Martin Erhardt, Isolde Römer, Dagmar Meyer Zu Heringdorf, Josef Pfeilschifter, Uwe Zangemeister-Wittke, Andrea Huwiler
Sphingosine kinase (SK) catalyses the formation of sphingosine 1-phosphate (S1P), which acts as a key regulator of inflammatory and fibrotic reactions, mainly via S1P receptor activation. Here, we show that in the human renal proximal tubular epithelial cell line HK2, the profibrotic mediator transforming growth factor β (TGFβ) induces SK-1 mRNA and protein expression, and in parallel, it also upregulates the expression of the fibrotic markers connective tissue growth factor (CTGF) and fibronectin. Stable downregulation of SK-1 by RNAi resulted in the increased expression of CTGF, suggesting a suppressive effect of SK-1-derived intracellular S1P in the fibrotic process, which is lost when SK-1 is downregulated...
May 17, 2018: International Journal of Molecular Sciences
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