scholarly journals The Ethanol Extract ofOsmanthus fragransFlowers Reduces Oxidative Stress and Allergic Airway Inflammation in an Animal Model

2013 ◽  
Vol 2013 ◽  
pp. 1-10 ◽  
Author(s):  
Chien-Ya Hung ◽  
Fu-Long Huang ◽  
Li-Shian Shi ◽  
Shuk-Man Ka ◽  
Jing-Yao Wang ◽  
...  
Keyword(s):  
Airway Inflammation ◽  
Allergic Airway Inflammation ◽  
Ethanol Extract ◽  
Thiobarbituric Acid ◽  
Specific Ige ◽  
Antioxidant Compounds ◽  
Osmanthus Fragrans ◽  
Antioxidative Effects ◽  
Traditional Chinese Medical

TheOsmanthus fragransflower, a popular herb in Eastern countries, contains several antioxidant compounds.Ben Cao Gang Mu, traditional Chinese medical literature, describes the usefulness of these flowers for phlegm and stasis reduction, arrest of dysentery with blood in the bowel, and stomachache and diarrhea treatment. However, modern evidence regarding the therapeutic efficacy of these flowers is limited. This study was aimed at assessing the antioxidative effects of the ethanol extract ofO. fragransflowers (OFE)in vivoand evaluating its antioxidant maintenance and therapeutic effect on an allergic airway inflammation in mice. After OFE’s oral administration to mice, the values obtained in the oxygen radical absorbance capacity assay as well as the glutathione concentration in the lungs and spleens of mice increased while thiobarbituric acid reactive substances decreased significantly, indicating OFE’s significantin vivoantioxidant activity. OFE was also therapeutically efficacious in a mouse model of ovalbumin-induced allergic airway inflammation. Orally administered OFE suppressed ovalbumin-specific IgE production and inflammatory cell infiltration in the lung. Moreover, the antioxidative state of the mice improved. Thus, our findings confirm the ability of theO. fragransflowers to reduce phlegm and suggest that OFE may be useful as an antiallergic agent.

scholarly journals Allergen Specific Treg Upregulated by Lung-stage Schistosome Infection Alleviates Allergic Airway Inflammation via Inhibiting IgE Secretion

2020 ◽  
Author(s):  
Zhi dan Li ◽  
Wei Zhang ◽  
Fang Luo ◽  
Jian Li ◽  
Wen bin Yang ◽  
...  
Keyword(s):  
Airway Inflammation ◽  
Therapeutic Effect ◽  
Lung Tissue ◽  
Allergic Airway Inflammation ◽  
Specific Ige ◽  
Therapeutic Effects ◽  
Lung Pathology ◽  
Protective Effects ◽  
Schistosome Infection

Abstract Background. Schistosome infection showed protective effects against allergic airway inflammation (AAI). However, controversial findings exist regarding the timing of helminth infection and the underlying mechanisms. Moreover, the therapeutic effects of schistosome infection on asthma were rarely investigated. Methods. The mice were percutaneously infected with cercaria of Schistosoma japonicum at either 1 day (infection at lung-stage during AAI) or 14 days before OVA induced asthma attack (infection at post lung-stage during AAI). Lung pathology, inflammatory cytokines, IgE and frequency of Treg were measured to evaluate the therapeutic effect. The modulation of allergen specific Treg were elucidated by adoptive transfer and Treg deletion in vivo. Finally, RNAseq was employed to explore the key molecules and pathways that might contribute to Treg upregulation. Results. We found that lung-stage schistosome infection significantly ameliorated OVA-induced AAI, whereas post lung-stage infection showed no therapeutic effect. Mechanistically, the lung-stage schistosome infection significantly upregulated the frequency of Treg, especially OVA specific Treg, in lung tissue, which negatively correlated with the level of OVA specific IgE. Depletion of Treg in vivo counteracted the therapeutic effect. Furthermore, transcriptomic analysis of lung tissue showed that lung-stage schistosome infection during AAI shaped the microenvironment to favor Treg induction. Conclusions. Our results proved that lung-stage schistosome infection could relieve OVA induced AAI in mouse model by the upregulated OVA specific Treg, which may facilitate the discovery of a new therapy for asthma.

scholarly journals HDAC2 attenuates airway inflammation by suppressing IL-17A production in HDM-challenged mice

2019 ◽  
Vol 316 (1) ◽  
pp. L269-L279 ◽  
Author(s):  
Tianwen Lai ◽  
Mindan Wu ◽  
Chao Zhang ◽  
Luanqing Che ◽  
Feng Xu ◽  
...  
Keyword(s):  
Airway Inflammation ◽  
Inflammatory Cytokines ◽  
Allergic Inflammation ◽  
Allergic Airway Inflammation ◽  
Inflammatory Cells ◽  
Protective Role ◽  
In Vivo Models

Histone deacetylase (HDAC)2 is expressed in airway epithelium and plays a pivotal role in inflammatory cells. However, the role of HDAC2 in allergic airway inflammation remains poorly understood. In the present study, we determined the role of HDAC2 in airway inflammation using in vivo models of house dust mite (HDM)-induced allergic inflammation and in vitro cultures of human bronchial epithelial (HBE) cells exposed to HDM, IL-17A, or both. We observed that HDM-challenged Hdac2+/− mice exhibited substantially enhanced infiltration of inflammatory cells. Higher levels of T helper 2 cytokines and IL-17A expression were found in lung tissues of HDM-challenged Hdac2+/− mice. Interestingly, IL-17A deletion or anti-IL-17A treatment reversed the enhanced airway inflammation induced by HDAC2 impairment. In vitro, HDM and IL-17A synergistically decreased HDAC2 expression in HBE cells. HDAC2 gene silencing further enhanced HDM- and/or IL-17A-induced inflammatory cytokines in HBE cells. HDAC2 overexpresion or blocking IL-17A gene expression restored the enhanced inflammatory cytokines. Collectively, these results support a protective role of HDAC2 in HDM-induced airway inflammation by suppressing IL-17A production and might suggest that activation of HDAC2 and/or inhibition of IL-17A production could prevent the development of allergic airway inflammation.

Protective Effect of Propolis Ethanol Extract on Ethanol-Induced Renal Toxicity: Anin VivoStudy

2005 ◽  
Vol 33 (05) ◽  
pp. 779-786 ◽  
Author(s):  
Chi-Feng Liu ◽  
Chia-Hsien Lin ◽  
Chun-Ching Lin ◽  
Yun-Ho Lin ◽  
Chin-Fa Chen ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Renal Failure ◽  
Protective Effect ◽  
Malonic Dialdehyde ◽  
Ethanol Extract ◽  
Absolute Ethanol ◽  
Protective Mechanism ◽  
Scavenging Effect ◽  
Antioxidative Effects

Acute p.o. administration of absolute ethanol (10 ml/kg) to fasted mice would produce extensive renal failure. Pretreatment with p.o. administration of propolis ethanol extract (PEE) could prevent such renal failure effectively and dose dependently. This renal protective effect of PEE may be contributed, at least in part, to its antioxidative activity. The maximal antioxidative effect against absolute ethanol (AE)-induced renal failure could be observed 1 hour after PEE administration. In order to further investigate the renal protective mechanism of PEE, lipid peroxidation and superoxide scavenging activity were conducted in vivo. PEE exhibited dose-dependent antioxidative effects on lipid peroxidation in mice renal homogenate. Results indicated that mice with acute renal failure have higher malonic dialdehyde (MDA) levels compared with those in PEE administered mice. It was concluded that the renal protective mechanism of PEE could be contributed, at least in part, to its prominent superoxide scavenging effect; hence, it could protect, indirectly, the kidney from superoxide-induced renal damages.

scholarly journals An in Vitro and in Vivo Study of the Effect of Dexamethasone on Immunoinhibitory Function of Induced Pluripotent Stem Cell-Derived Mesenchymal Stem Cells

2018 ◽  
Vol 27 (9) ◽  
pp. 1340-1351 ◽  
Author(s):  
Dan Wang ◽  
Yue-Qi Sun ◽  
Wen-Xiang Gao ◽  
Xing-Liang Fan ◽  
Jian-Bo Shi ◽  
...  
Keyword(s):  
Stem Cells ◽  
Mesenchymal Stem Cells ◽  
Airway Inflammation ◽  
Pluripotent Stem Cell ◽  
Allergic Airway Inflammation ◽  
Induced Pluripotent Stem Cell ◽  
Induced Pluripotent ◽  
Immunomodulatory Function

Induced pluripotent stem cell-derived mesenchymal stem cells (iPSC-MSCs) represent a promising cell source for patient-specific cell therapy. We previously demonstrated that they display an immunomodulatory effect on allergic airway inflammation. Glucocorticoids are powerful anti-inflammatory compounds and widely used in the therapy of allergic diseases. However, the effect of glucocorticoids on the immunomodulatory function of iPSC-MSCs remains unknown. This study aimed to determine the effect of dexamethasone (Dex) on the immunomodulatory function of iPSC-MSCs in vitro and in vivo. A total of three human iPSC-MSC clones were generated from amniocyte-derived iPSCs. Anti-CD3/CD28-induced peripheral blood mononuclear cell (PBMC) proliferation was used to assess the effect of Dex on the immunoinhibitory function of iPSC-MSCs in vitro. Mouse models of contact hypersensitivity (CHS) and allergic airway inflammation were induced, and the levels of inflammation in mice were analyzed with the treatments of iPSC-MSCs and Dex, alone and combined. The results showed that Dex did not interfere with the immunoinhibitory effect of iPSC-MSCs on PBMC proliferation. In CHS mice, simultaneous treatment with Dex did not affect the effect of iPSC-MSCs on the inflammation, both in regional draining lymph nodes and in inflamed ear tissue. In addition, co-administration of iPSC-MSCs with Dex decreased the local expression of interferon (IFN)-γ and tumor necrosis factor (TNF)-α in the ears of CHS mice. In the mouse model of allergic airway inflammation, iPSC-MSC treatment combined with Dex resulted in a similar extent of reduction in pulmonary inflammation as iPSC-MSCs or Dex treatment alone. In conclusion, Dex does not significantly affect the immunomodulatory function of iPSC-MSCs both in vitro and in vivo. These findings may have implications when iPSC-MSCs and glucocorticoids are co-administered.

ANTI-HYPERCHOLESTEROLEMIA ACTIVITY OF ETHANOL EXTRACT Peperomia pellucida

2016 ◽  
Vol 12 (1) ◽  
Author(s):  
Chasanah Mazroatul
Keyword(s):  
Total Cholesterol ◽  
Ethanol Extract ◽  
Positive Control ◽  
Diet Group ◽  
In Vivo Studies ◽  
Control Group ◽  
Antioxidant Compounds ◽  
Control Group Design ◽  
White Rats

<p>Hypercholesterolemia is a major cause of cardiovascular disease such as coronary heart disease. Betel water (Peperomia pellucida) is a type of plants that have antioxidant compounds that could delay, retard and prevent the oxidation of lipids, both enzymatic and non-enzymatic. This study aimed to determine the effect of ethanol extract Peperomia pellucida against total cholesterol, HDL, LDL, and triglycerides in the serum of white rats (Wistar) were given a diet aterogenetik, so it can be used as prevention of atherosclerosis. The active compounds contained in the water after screnning betel phytochemicals includes flavonoids, tannins, alkaloids, steroids and quinones. In vivo studies conducted by true experimental method with pre and post test with control group design. Rats were divided into 3 groups: group A positive control is given aterogenetik diet, group B and C were given diet Peperomia Pellucida aterogenetik and extract orally at a dose of 150 mg/kg and 300 mg/kg. Diet aterogenetik given as much as 20 grams per day for 14 days. Data obtained include total cholesterol, HDL, LDL, and triglycerides were analyzed by statistical methods Paired T Test oneway ANOVA (P &lt; 0,05). The study of total cholesterol, HDL, LDL and triglycerides showed ethanol extract of Peperomia pellucida at a dose of 300 mg/kg body weight can lower total cholesterol and LDL significantly, but there was no significant decline in triglycerides and can increase HDL levels.</p>

Plasma arginine metabolites reflect airway dysfunction in a murine model of allergic airway inflammation

2015 ◽  
Vol 118 (10) ◽  
pp. 1229-1233 ◽  
Author(s):  
Jeremy A. Scott ◽  
Michelle L. North ◽  
Mahrouk Rafii ◽  
Hailu Huang ◽  
Paul Pencharz ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Nitric Oxide Synthase ◽  
Airway Inflammation ◽  
Plasma Concentrations ◽  
Allergic Airway Inflammation ◽  
Airway Responsiveness ◽  
Arginase Activity ◽  
Therapeutic Interventions ◽  
Oxide Synthase

l-Arginine metabolism is important in the maintenance of airway tone. Shift of metabolism from the nitric oxide synthase to arginase pathways contributes to the increased airway responsiveness in asthma. We tested the hypothesis that systemic levels of l-arginine metabolites are biomarkers reflective of airway dysfunction. We used a mouse model of acute allergic airway inflammation to OVA that manifests with significant airway hyperresponsiveness to methacholine. To determine tissue arginase activity in vivo, the isotopic enrichment of an infused l-arginine stable isotope and its product amino acid l-ornithine were measured in lung and airway homogenates using liquid chromatography-tandem mass spectrometry. Tissue and plasma concentrations of other l-arginine metabolites, including l-citrulline and symmetric and asymmetric dimethylarginine, were measured and correlated with lung arginase activity and methacholine responsiveness of the airways. The effectiveness of intratracheal instillation of an arginase inhibitor (boronoethylcysteine) on pulmonary arginase activity and circulating concentrations of l-arginine metabolites was also studied. We demonstrate that 1) plasma indexes of l-arginine bioavailability and impairment of nitric oxide synthase function correlate with airway responsiveness to methacholine; 2) plasma levels of l-ornithine predict in vivo pulmonary arginase activity and airway function; and 3) acute arginase inhibition reduces in vivo pulmonary arginase activity to control levels and normalizes plasma l-ornithine, but not l-arginine, bioavailability in this model. We conclude that plasma l-ornithine may be useful as a systemic biomarker to predict responses to therapeutic interventions targeting airway arginase in asthma.

scholarly journals NBR1 is a new PB1 signalling adapter in Th2 differentiation and allergic airway inflammation in vivo

2010 ◽  
Vol 29 (19) ◽  
pp. 3421-3433 ◽  
Author(s):  
Jun-Qi Yang ◽  
Hongzhu Liu ◽  
Maria T Diaz-Meco ◽  
Jorge Moscat
Keyword(s):  
Airway Inflammation ◽  
Allergic Airway Inflammation ◽  
Th2 Differentiation

scholarly journals FSTL1 aggravates OVA-induced allergic airway inflammation by activating NLRP3 inflammasome

2020 ◽  
Author(s):  
Yan Wang ◽  
Tian Liu ◽  
Jun-fei Wang ◽  
Bao-yi Liu ◽  
Jin-xiang Wu ◽  
...  
Keyword(s):  
Airway Inflammation ◽  
Nlrp3 Inflammasome ◽  
Allergic Airway Inflammation ◽  
Experimental Treatment ◽  
Underlying Mechanism ◽  
Whole Body ◽  
Control Group ◽  
Asthmatic Patients

Abstract Background Asthma is a common respiratory disease characterized by chronic airway inflammation. As a novel inflammatory mediator, follistatin-like protein 1 (FSTL1) can activate immune reaction, suggesting that it may contribute to inflammatory disorders such as asthma. Besides, there are growing evidences that nucleotide-binding domain and leucine-rich repeat protein 3 (NLRP3) / Interleukin (IL)-1β axis participates in asthma. In this study, we investigated the role of FSTL1 in allergic airway inflammation and its underlying mechanism of activating NLRP3 inflammasome. Methods Circulating FSTL1 and IL-1β levels were quantified in serum of asthmatic patients and controls. Whole-body ablation Fstl1 heterozygous mice (Fstl1 +/- ) and control group were assessed after the experimental treatment. The effects of FSTL1 on NLRP3 inflammasome were also tested in primary macrophages of mice in vitro. Results The concentration of FSTL1 and IL-1β in serum of asthmatic patients were elevated compared with controls and were positively correlated. FSTL1 deficiency ameliorated infiltration of inflammatory cells,corresponding pathological changes,cytokine responses (IL-1β, IL-5,IL-13), mucous hypersecretion and hyper-responsiveness of airway after Ovalbumin (OVA) exposure in the mouse model. Additionally, inhibition of NLRP3 with MCC950 attenuated FSTL1-induced activation of NLRP3 inflammasome and airway inflammation in vivo and vitro. Conclusions Our data showed that FSTL1 played an important role in allergic airway inflammation by activating NLRP3 inflammasome, providing the possibility that FSTL1 could be applied as a therapeutic strategy on asthma.

scholarly journals ANTI-HYPERCHOLESTEROLEMIA ACTIVITY OF ETHANOL EXTRACT Peperomia pellucid

2016 ◽  
Vol 12 (1) ◽  
pp. 88 ◽  
Author(s):  
Chasanah Mazroatul ◽  
Glar Donia Deni ◽  
Nur Ahmad Habibi ◽  
Gita Febri Saputri
Keyword(s):  
Total Cholesterol ◽  
Ethanol Extract ◽  
Positive Control ◽  
Diet Group ◽  
In Vivo Studies ◽  
Control Group ◽  
Antioxidant Compounds ◽  
Control Group Design ◽  
White Rats

Hypercholesterolemia is a major cause of cardiovascular disease such as coronary heart disease. Betel water (Peperomia pellucida) is a type of plants that have antioxidant compounds that could delay, retard and prevent the oxidation of lipids, both enzymatic and non-enzymatic. This study aimed to determine the effect of ethanol extract Peperomia pellucida against total cholesterol, HDL, LDL, and triglycerides in the serum of white rats (Wistar) were given a diet aterogenetik, so it can be used as prevention of atherosclerosis. The active compounds contained in the water after screnning betel phytochemicals includes flavonoids, tannins, alkaloids, steroids and quinones. In vivo studies conducted by true experimental method with pre and post test with control group design. Rats were divided into 3 groups: group A positive control is given aterogenetik diet, group B and C were given diet Peperomia Pellucida aterogenetik and extract orally at a dose of 150 mg/kg and 300 mg/kg. Diet aterogenetik given as much as 20 grams per day for 14 days. Data obtained include total cholesterol, HDL, LDL, and triglycerides were analyzed by statistical methods Paired T Test oneway ANOVA (P &lt; 0.05). The study of total cholesterol, HDL, LDL and triglycerides showed ethanol extract of Peperomia pellucida at a dose of 300 mg/kg body weight can lower total cholesterol and LDL significantly, but there was no significant decline in triglycerides and can increase HDL levels.

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