Pinus thunbergii Parl. Extracts Reduce Acute Inflammation by Targeting Oxidative Stress

Pinus thunbergii Parl. (PTP) has traditionally been used for edible and medicinal purposes to treat several disorders, including diabetes and neuralgia. Therefore, this study sought to evaluate the inhibitory effects of PTP leaf ethanol extracts on acute inflammation. Moreover, the reactive oxygen species (ROS) scavenging activity, superoxide dismutase (SOD) activity, lipopolysaccharide (LPS)-induced nitric oxide (NO) generation, and H2O2-induced lipid peroxidation capacity of PTP were assessed in vitro in RAW 264.7 macrophages. Our results suggest that PTP prevents cell damage caused by oxidative free radicals and downregulates the expression of LPS-induced inflammation-associated factors including inducible nitric oxidase synthetase (iNOS), cyclooxygenase-2 (COX-2), and prostaglandin E2 (PGE2). PTP inhibited NO production by 53.5% ( P < 0.05 ) and iNOS expression by 71.5% ( P < 0.01 ) at 100 µg/mL. PTP at 100 µg/mL also inhibited ROS generation by 58.2% ( P < 0.01 ) and SOD activity by 29.3%, as well as COX-2 expression by 83.3% ( P < 0.01 ) and PGE2 expression by 98.6% ( P < 0.01 ). The anti-inflammatory effects of PTP were confirmed in vivo using an arachidonic acid (AA)-induced ear edema mouse model. Ear thickness and myeloperoxidase (MPO) activity were evaluated as indicators of inflammation. PTP inhibited edema formation by 64.5% ( P < 0.05 ) at 1.0 mg/ear. A total of 16 metabolites were identified in PTP extracts and categorized into subgroups, including two phenolic acids (mainly quinic acid), seven flavonoids, five lignans, one sesquiterpenoid, and one long-chain fatty acid. Therefore, our results suggest that PTP possesses anti-inflammatory properties.

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Reduction of paw edema and liver oxidative stress in carrageenan-induced acute inflammation by Lobaria pulmonaria and Parmelia caperata, lichen species, in mice

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000620 ◽

2019 ◽

pp. 1-9

Author(s):

Samira Salem ◽

Essaid Leghouchi ◽

Rachid Soulimani ◽

Jaouad Bouayed

Keyword(s):

Time Course ◽

Acute Inflammation ◽

Lichen Species ◽

Paw Edema ◽

Sod Activity ◽

Edema Formation ◽

Lobaria Pulmonaria ◽

Anti Inflammatory ◽

Endogenous Antioxidant ◽

Inflammatory Effect

Abstract. Paw edema volume reduction is a useful marker in determining the anti-inflammatory effect of drugs and plant extracts in carrageenan-induced acute inflammation. In this study, the anti-inflammatory effect of Lobaria pulmonaria (LP) and Parmelia caperata (PC), two lichen species, was examined in carrageenan-induced mouse paw edema test. Compared to the controls in carrageenan-induced inflammation (n = 5/group), our results showed that pretreatment by single oral doses with PC extract (50–500 mg/kg) gives better results than LP extract (50–500 mg/kg) in terms of anti-edematous activity, as after 4 h of carrageenan subplantar injection, paw edema formation was inhibited at 82–99% by PC while at 35–49% by LP. The higher anti-inflammatory effect of PC, at all doses, was also observed on the time-course of carrageenan-induced paw edema, displaying profile closely similar to that obtained with diclofenac (25 mg/kg), an anti-inflammatory drug reference (all p < 0.001). Both LP and PC, at all doses, significantly ameliorated liver catalase (CAT) activity (all p < 0.05). However, superoxide dismutase (SOD) activity, glutathione peroxidase (GPx) activity and glutathione (GSH) levels were found increased in liver of PC- compared to LP-carrageenan-injected mice. Our findings demonstrated on one hand higher preventive effects of PC compared to LP in a mouse carrageenan-induced inflammatory model and suggested, on the other hand, that anti-inflammatory effects elicited by the two lichens were closely associated with the amelioration in the endogenous antioxidant status of liver.

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The Remarkable Antioxidant and Anti-Inflammatory Potential of the Extracts of the Brown Alga Cystoseira amentacea var. stricta

Marine Drugs ◽

10.3390/md19010002 ◽

2020 ◽

Vol 19 (1) ◽

pp. 2

Author(s):

Gina De La Fuente ◽

Marco Fontana ◽

Valentina Asnaghi ◽

Mariachiara Chiantore ◽

Serena Mirata ◽

...

Keyword(s):

Oxidative Stress ◽

No Production ◽

Low Grade ◽

Raw 264.7 ◽

Ros Scavenging ◽

Ligurian Sea ◽

Raw 264.7 Macrophages ◽

Pharmaceutical Industries ◽

Anti Inflammatory ◽

First Time

Inflammation and oxidative stress are part of the complex biological responses of body tissues to harmful stimuli. In recent years, due to the increased understanding that oxidative stress is implicated in several diseases, pharmaceutical industries have invested in the research and development of new antioxidant compounds, especially from marine environment sources. Marine seaweeds have shown the presence of many bioactive secondary metabolites, with great potentialities from both the nutraceutical and the biomedical point of view. In this study, 50%-ethanolic and DMSO extracts from the species C. amentacea var. stricta were obtained for the first time from seaweeds collected in the Ligurian Sea (north-western Mediterranean). The bioactive properties of these extracts were then investigated, in terms of quantification of specific antioxidant activities by relevant ROS scavenging spectrophotometric tests, and of anti-inflammatory properties in LPS-stimulated macrophages by evaluation of inhibition of inflammatory cytokines and mediators. The data obtained in this study demonstrate a strong anti-inflammatory effect of both C. amentacea extracts (DMSO and ethanolic). The extracts showed a very low grade of toxicity on RAW 264.7 macrophages and L929 fibroblasts and a plethora of antioxidant and anti-inflammatory effects that were for the first time thoroughly investigated. The two extracts were able to scavenge OH and NO radicals (OH EC50 between 392 and 454 μg/mL; NO EC50 between 546 and 1293 μg/mL), to partially rescue H2O2-induced RAW 264.7 macrophages cell death, to abate intracellular ROS production in H2O2-stimulated macrophages and fibroblasts and to strongly inhibit LPS-induced inflammatory mediators, such as NO production and IL-1α, IL-6, cyclooxygenase-2 and inducible NO synthase gene expression in RAW 264.7 macrophages. These results pave the way, for the future use of C. amentacea metabolites, as an example, as antioxidant food additives in antiaging formulations as well as in cosmetic lenitive lotions for inflamed and/or damaged skin.

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Novel benzofurane-pyrazole derivatives with anti-inflammatory, cyclooxygenase inhibitory and cytotoxicity evaluation

Zeitschrift für Naturforschung C ◽

10.1515/znc-2021-0217 ◽

2022 ◽

Vol 0 (0) ◽

Author(s):

Zafer Sahin ◽

Yağmur Özhan ◽

Hande Sipahi ◽

Sevde Nur Biltekin ◽

Leyla Yurttaş ◽

...

Keyword(s):

Hydroxy Ketone ◽

No Production ◽

Raw 264.7 ◽

Pyrazole Derivatives ◽

H Nmr ◽

Pyrazolone Derivatives ◽

Cox 2 ◽

Anti Inflammatory ◽

Cox 1 ◽

C Nmr

Abstract Novel benzofurane-pyrazolone hybrids have been synthesized for evaluating their anti-inflammatory and cytotoxic properties. 4-(2-chloroacetyl)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one were reacted with α-hydroxy aldehyde or α-hydroxy ketone derivatives to obtain nine novel pyrazolone derivatives. Structures were successfully elucidated by 1H NMR, 13C NMR, IR and HRMS. Enzyme inhibitory activity was measured on cyclooxygenases (COXs) as considered to address anti-inflammatory activity. Compound 2 showed the highest activity on both COX-1 and COX-2 subtypes with 12.0 μM and 8.0 μM IC50, respectively. This activity was found close to indomethacin COX-2 inhibition measured as 7.4 μM IC50. Rest of the compounds (1, 3–9) showed 10.4–28.1 μM IC50 on COX-2 and 17.0–35.6 μM IC50 on COX-1 (Compound 1 has no activity on COX-1). Tested compounds (1–9) showed activity on NO production. Only compound was the 4, which showed a low inhibition on IL-6 levels. Cell viability was up to 60% at 100 μM for all compounds (1–9) on RAW 264.7 and NIH3T3 cell lines, thus compounds were reported to be noncytotoxic.

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New Perspectives on Aspirin and the Endogenous Control of Acute Inflammatory Resolution

The Scientific World JOURNAL ◽

10.1100/tsw.2006.192 ◽

2006 ◽

Vol 6 ◽

pp. 1048-1065 ◽

Cited By ~ 16

Author(s):

Thea Morris ◽

Melanie Stables ◽

Derek W. Gilroy

Keyword(s):

Mode Of Action ◽

Acute Inflammation ◽

Lipid Mediators ◽

The Other ◽

Endogenous Control ◽

Protective Properties ◽

Traditional Mode ◽

Inflammatory Drugs ◽

Cox 2 ◽

Anti Inflammatory

Aspirin is unique among the nonsteroidal anti-inflammatory drugs in that it has both anti-inflammatory as well as cardio-protective properties. The cardio-protective properties arise form its judicious inhibition of platelet-derived thromboxane A2over prostacyclin, while its anti-inflammatory effects of aspirin stem from its well-established inhibition of prostaglandin (PG) synthesis within inflamed tissues. Thus aspirin and the other NSAIDs have popularised the notion of inhibiting PG biosynthesis as a common anti-inflammatory strategy based on the erroneous premise that all eicosanoids are generally detrimental to inflammation. However, our fascination with aspirin has shown a more affable side to lipid mediators based on our increasing interest in the endogenous control of acute inflammation and in factors that mediate its resolution. Epi-lipoxins (epi-LXs), for instance, are produced from aspirins acetylation of inducible cyclooxygenase 2 (COX-2) and together with Resolvins represent an increasingly important family of immuno-regulatory and potentially cardio-protective lipid mediators. Aspirin is beginning to teach us what nature knew all along that not all lipid mediators are bad. It seems that while some eicosanoids are pathogenic in a variety of diseases, others are unarguable protective. In this review we will re-count aspirins colorful history, discuss its traditional mode of action and the controversies associated therewith, as well as highlight some of the new pathways in inflammation and the cardiovascular systems that aspirin has recently revealed.

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ANTI-INFLAMMATORY ACTIVITY OF BACTERIA ASSOCIATED WITH MARINE SPONGE (HALICLONA AMBOINENSIS) VIA REDUCTING NO PRODUCTION AND INHIBITING CYCLOOXYGENASE-1, CYCLOOXYGENASE-2, AND SECRETORY PHOSPHOLIPASE A2 ACTIVITIES

Asian Journal of Pharmaceutical and Clinical Research ◽

10.22159/ajpcr.2017.v10i11.20094 ◽

2017 ◽

Vol 10 (11) ◽

pp. 95 ◽

Cited By ~ 1

Author(s):

Yosie Andriani ◽

Leni Marlina ◽

Habsah Mohamad ◽

Hermansyah Amir ◽

Siti Aisha M Radzi ◽

...

Keyword(s):

Methanol Extract ◽

Inflammatory Activity ◽

No Production ◽

Secretory Phospholipase A2 ◽

Phytochemical Screening ◽

Spla2 Activity ◽

Cyclooxygenase 1 ◽

Cox 2 ◽

Anti Inflammatory ◽

Cox 1

Objective: This study aimed to investigate the anti-inflammatory activity of methanol extract and fractions of bacteria associated with sponge (Haliclona amboinensis) and to evaluate their effect in reducing NO production and inhibiting cyclooxygenase-1 (COX-1), cyclooxgenase-2 (COX-2) and secretory phospholipase A2 (sPLA2) activity.Methods: All bacterial isolates were cultured and supernatants were collected for the extraction of secondary metabolites using diaion HP-20 to obtain methanol extracts. Evaluation of cytotoxicity property was carried out on macrophage cell lines (RAW264.7) by 3-(4,5-dimethylthiazol- 2-yl) 2,5-diphenyl tetrazoliumbromide assay. Anti-inflammatory screening was done by inducible nitric oxide assay on RAW264.7 cell lines with lipopolysaccharide (LPS) stimulation. Dianion HP-20 was used to remove salt content. A selected methanol extract was subjected to further fractionations by C-18 reverse phase and their anti-inflammatory potential was evaluated by COX-1 and COX-2, and sPLA2 enzymatic assay.Results: Seven methanol extracts showed no cytotoxic property against RAW 264.7 cell line (inhibitory concentration 50% > 30 μg/ml) and selected for anti-inflammatory screening assay. Result showed methanol extract HM 1.2 reduced NO production >80% and it has been selected for phytochemical screening, further fractionations and assay. Phytochemical screening showed alkaloids and terpenoids present in the HM 1.2. The HM 1.2 and its fractions (F1, F2, F1C1, F1C2, F1C3, and F1C4) were proven to inhibit COX-1, COX-2, and sPLA2 activity in the range of 60.516-116.886%, 20.554- 116.457%, and 70.2667-114.8148%, respectively.Conclusions: This study revealed that bacteria associated with H. amboinensis have produced anti-inflammatory activity via reducing NO production and inhibiting COX-1, COX-2, and sPLA2 activity.

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In vitro and in vivo anti-inflammatory activities of a sterol-enriched fraction from freshwater green alga, Spirogyra sp.

Fisheries and Aquatic Sciences ◽

10.1186/s41240-020-00172-9 ◽

2020 ◽

Vol 23 (1) ◽

Author(s):

Lei Wang ◽

You-Jin Jeon ◽

Jae-Il Kim

Keyword(s):

Nitric Oxide ◽

Green Alga ◽

Raw 264.7 Cells ◽

Ros Generation ◽

Prostaglandin E ◽

No Production ◽

Raw 264.7 ◽

Anti Inflammatory

Abstract Background Inflammation plays a crucial role in the pathogenesis of many diseases such as arthritis and atherosclerosis. In the present study, we evaluated anti-inflammatory activity of sterol-rich fraction prepared from Spirogyra sp., a freshwater green alga, in an effort to find bioactive extracts derived from natural sources. Methods The sterol content of ethanol extract of Spirogyra sp. (SPE) was enriched by fractionation with hexane (SPEH), resulting 6.7 times higher than SPE. Using this fraction, the in vitro and in vivo anti-inflammatory activities were evaluated in lipopolysaccharides (LPS)-stimulated RAW 264.7 cells and zebrafish. Results SPEH effectively and dose-dependently decreased the production of nitric oxide (NO) and prostaglandin E2 (PGE2). SPEH suppressed the production of pro-inflammatory cytokines including interleukin-6 (IL-6), tumor necrosis factor-α (TNF-α), and IL-1β through downregulating nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) expression in LPS-stimulated RAW 264.7 cells without cytotoxicity. The in vivo test results indicated that SPEH significantly and dose-dependently reduced reactive oxygen species (ROS) generation, cell death, and NO production in LPS-stimulated zebrafish. Conclusions These results demonstrate that SPEH possesses strong in vitro and in vivo anti-inflammatory activities and has the potential to be used as healthcare or pharmaceutical material for the treatment of inflammatory diseases.

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Panos-Fermented Extract-Mediated Nanoemulsion: Preparation, Characterization, and In Vitro Anti-Inflammatory Effects on RAW 264.7 Cells

Molecules ◽

10.3390/molecules27010218 ◽

2021 ◽

Vol 27 (1) ◽

pp. 218

Author(s):

Rui Zhang ◽

Esrat Jahan Rupa ◽

Siwen Zheng ◽

Jinnatun Nahar ◽

Deok Chun Yang ◽

...

Keyword(s):

Quantitative Polymerase Chain Reaction ◽

Spherical Shape ◽

High Energy ◽

Raw 264.7 Cells ◽

Ros Generation ◽

No Production ◽

Raw 264.7 ◽

Qpcr Analysis ◽

Anti Inflammatory

This study focused on developing Panos nanoemulsion (P-NE) and enhancing the anti-inflammatory efficacy for the treatment of inflammation. The effects of P-NE were evaluated in terms of Nitric oxide (NO production) in Lipopolysaccharide (LPS), induced RAW 264.7 cells, Reactive oxygen species (ROS) generation using Human Keratinocyte cells (HaCaT), and quantitative polymerase chain reaction (qPCR) analysis. Sea buckthorn oil, Tween 80, and span 80 were used and optimize the process. Panos extract (P-Ext) was prepared using the fermentation process. Further high-energy ultra-sonication was used for the preparation of P-NE. The developed nanoemulsion (NE) was characterized using different analytical methods. Field emission transmission electron microscopy (FE-TEM) analyzed the spherical shape and morphology. In addition, stability was analyzed by Dynamic light scattering (DLS) analysis, where particle size was analyzed 83 nm, and Zeta potential −28.20 ± 2 (mV). Furthermore, 90 days of stability was tested using different temperatures conditions where excellent stability was observed. P-NE are non-toxic in (HaCaT), and RAW264.7 cells up to 100 µg/mL further showed effects on ROS and NO production of the cells at 50 µg/mL. The qPCR analysis demonstrated the suppression of pro-inflammatory mediators for (Cox 2, IL-6, IL-1β, and TNF-α, NF-κB, Ikkα, and iNOS) gene expression. The prepared NE exhibited anti-inflammatory effects, demonstrating its potential as a safe and non-toxic nanomedicine.

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Anti-inflammatory Activity of Constituents Isolated from Terminalia chebula

Natural Product Communications ◽

10.1177/1934578x1400900721 ◽

2014 ◽

Vol 9 (7) ◽

pp. 1934578X1400900 ◽

Cited By ~ 4

Author(s):

Min Hye Yang ◽

Zulfiqar Ali ◽

Ikhlas A. Khan ◽

Shabana I. Khan

Keyword(s):

Nitric Oxide ◽

Cellular Level ◽

Inflammatory Activity ◽

No Production ◽

Terminalia Chebula ◽

Arjunolic Acid ◽

Cox 2 ◽

Anti Inflammatory ◽

Oxide Synthase ◽

Inducible Nitric Oxide

This study was aimed at the evaluation of the anti-inflammatory activity of twelve compounds isolated from the methanolic extract of fruits of Terminalia chebula. The activity was determined in terms of their ability to inhibit inducible nitric oxide synthase ( iNOS) and cyclooxygenase-2 (COX-2) in LPS-stimulated macrophages. Two gallotannins [chebulinic acid (1) and 2,3,6-tri- O-galloyl-β-D-glucose (2)] and two triterpenoids [arjunic acid (3) and arjunolic acid (4)] efficiently reduced nitric oxide (NO) production with IC50 values of 53.4, 55.2, 48.8, and 38.0 μM, respectively. The protein expressions of iNOS and COX-2 were decreased in macrophages by treatment with compounds 1–4 (54–69% and 33–37%, respectively) at 50 μM. This is the first report of anti-inflammatory property of 1–4 mediated by inhibition of iNOS and COX-2 activities at the cellular level.

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The Anti-inflammatory Effects of Lignan Glycosides from Cistanche tubulosa stems on LPS/IFN-γ-induced RAW264.7 Macrophage Cells via PI3K/AKT Pathway

Current Pharmaceutical Biotechnology ◽

10.2174/1389201021999201124151426 ◽

2020 ◽

Vol 21 ◽

Author(s):

Jinhan Guo ◽

Shuming Tang ◽

Yuyang Miao ◽

Lanlan Ge ◽

Junfa Xu ◽

...

Keyword(s):

Raw264.7 Cells ◽

Akt Pathway ◽

No Production ◽

Dependent Manner ◽

Ifn Γ ◽

Cox 2 ◽

Cistanche Tubulosa ◽

Anti Inflammatory ◽

Lignan Glycosides ◽

Dose Dependent

Background: Cistanche tubulosa is a tonic in traditional Chinese medicines and has a broad spectrum of biological activity, including anti-inflammatory. However, its anti-inflammatory major constituents of C. tubulosa and their underlying mechanisms are still unknown. Objective: The aim of the current study was to explore the separation and structural characterization of lignan glycosides from C. tubulosa (Schenk) Wight., their anti-inflammatory activity and underlying mechanism. Materials and Methods: Fractionation and isolation of the 85% EtOH extract of C. tubulosa (Schenk) Wight. were carried out and the primary ingredients lignan glycosides (1-6) were structurally characterized. CCK8 methods were used to evaluate the cytotoxic effect of lignan glycosides (1-6). Effects of lignan glycosides (1-6) on NO production in LPS/IFN-γ-induced RAW264.7 macrophages cells were measured using Griess reagent by reaction with nitrite. The mRNA expression levels of iNOS, COX-2, IL-1β, IL-6, TNF-a, and TGF-β treated RAW264.7 cells with various concentrations (0, 25 and 50 μg/ml) of lignan glycosides (1, 4) in the presence of LPS (10 ng/ml) and IFN-γ (20 ng/ml) for 24 h were analyzed by quantitative RT-PCR. Also the protein expressions of iNOS, COX-2, PI3K, AKT, p-AKT and β-actin were determined using Western blot analysis. A molecular docking study was performed to investigate the interactions between the lignan glycosides and the PI3K using Autodock vina 1.1.2 package. Results: Six lignan glycosides (1-6) were isolated from stems of C. tubulosa. Among them, (+)-pinoresinol-4-O-β-D-glucopyranosyl- (1→6)-β-D- glucopyranoside (5) and eleutheroside E (6) were firstly isolated from C. tubulosa. Of these lignans, 1 and 4 exhibited pronounced inhibitions on NO production with the values of 33.63 ± 4.78 and 39.28 ± 5.52 % at 50 μg/ml, respectively. Additionally, LPS/IFN-γ-induced expression of inducible nitric oxide synthase (iNOS), cyclooxygenase-2 (COX-2), interleukin-1β (IL-1β), IL-6, and tumor necrosis factor-a (TNF-a) was significantly suppressed by pre-treatment of 1 and 4 in a dose-dependent manner. While 1 and 4 increased the mRNA levels of anti-inflammatory cytokines (TGF-β). Furthermore, 1 and 4 significantly inhibited the protein levels of PI3K and p-AKT in a dose-dependent manner. Conclusion: Taken together, these results suggest that 1 and 4 play an important role in the attenuation of LPS/IFN-γ-induced inflammatory responses in RAW264.7 cells and that the mechanisms involve down-regulation of the PI3K/AKT pathway.

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Anti-inflammatory effects of celecoxib in rat lungs with smoke-induced emphysema

AJP Lung Cellular and Molecular Physiology ◽

10.1152/ajplung.00303.2009 ◽

2010 ◽

Vol 299 (2) ◽

pp. L184-L191 ◽

Cited By ~ 23

Author(s):

Gu Seob Roh ◽

Chin-ok Yi ◽

Yu Ji Cho ◽

Byeong Tak Jeon ◽

Irina Tsoy Nizamudtinova ◽

...

Keyword(s):

Pulmonary Emphysema ◽

Pulmonary Inflammation ◽

Inhibitory Effect ◽

No Production ◽

Raw 264.7 ◽

Raw 264.7 Macrophages ◽

Rat Lungs ◽

Cox 2 ◽

Anti Inflammatory ◽

Regulated Gene Expression

Chronic airway inflammation is a characteristic feature of destructive cigarette smoking (CS)-induced lung disease, particularly in patients with emphysema. Celecoxib, a specific cyclooxygenase-2 (COX-2) inhibitor, is widely used to treat inflammation. However, the exact mechanisms underlying this drug's anti-inflammatory effects have not yet been determined in pulmonary emphysema. Here, we explore whether celecoxib attenuates CS-induced inflammation in rat lungs. Rats were exposed to smoke and received celecoxib via intragastric feeding daily for 20 wk. We found that celecoxib inhibited interalveolar wall distance and pulmonary inflammation in the lungs of CS-treated rats. Celecoxib inhibited serum NO production, iNOS, COX-2 expression, and PGE2 production in CS-treated lung tissues. Our immunohistochemical data showed that CS-induced CD68 and COX-2 expression were inhibited by celecoxib. Furthermore, celecoxib attenuated the activation of phospho-IκBα and NF-κB in CS-treated rat lung. In addition, there was an inhibitory effect of celecoxib on the COX-2 expression and NF-κB activation in LPS-stimulated RAW 264.7 macrophages. Celecoxib also attenuated NF-κB activation in COX-2 siRNA-transfected RAW 264.7 macrophages. Thus, our findings suggest that the anti-inflammatory effects of celecoxib are mediated by its effects on NF-κB-regulated gene expression, which ultimately reduces the progression of CS-induced pulmonary emphysema.

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