JOURNAL OF ETHNOPHARMACOLOGY
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2025
·
IF 5.4
Nana Gao,Zongyu Huang,Jianjie Xie,Shuang Gao,Biaobiao Wang,Huicong Feng,Cuifen Bao,He Tian,Xia Liu
Ethnopharmacological relevance The Cryptotanshinone (CT) is a kind of Chinese medicine extracted from salvia miltiorrhiza, which has various pharmacological activities and is widely used in the treatment of diseases. Aim of the study The objective is to delve into the mechanism by which cryptotanshinone (CT) exerts its effects on rats with the middle cerebral artery occlusion/reperfusion (MCAO/R) model. Additionally, it aims to further assess the interplay between inflammation and oxidative stress, along with the underlying mechanism of CT's anti-ferroptosis function. Materials and methods We constructed the middle cerebral artery occlusion/reperfusion (MCAO/R) model in rats. The effects of cryptotanshinone (CT) were evaluated using 2,3,5 - triphenyltetrazolium chloride (TTC) staining, behavioral assays, immunofluorescence, hematoxylin - eosin (HE) staining, and Nissl staining. Additionally, in vitro, cell viability was assessed by the Cell Counting Kit - 8 (CCK - 8) assay following experimental dosing. Oxygen - glucose deprivation/oxidation (OGD/R) models were established in PC12 and BV2 cells. Flow cytometry was employed to detect cellular reactive oxygen species (ROS) expression. The activities of superoxide dismutase (SOD), malondialdehyde (MDA), glutathione peroxidase (GSH-px), andMitochondrial Membrane Potential Assay Kit with JC-1(JC-1) were measured using biochemical methods. Inflammatory factor levels were determined using enzyme-linked immunosorbent assay (ELISA) kits. Immunoblotting was used to detect the levels of rat phosphatidylinositol 3 - kinase (PI3K), phosphorylated-PI3K (P-PI3K), protein kinase B (AKT), phosphorylated - AKT (P-AKT), nuclear factor erythroid 2related factor 2 (Nrf2), solute carrier family 7 member 11 (SLC7A11), and glutathione peroxidase 4 (GPX4). Results In rats with the MCAO/R model, CT demonstrated the ability to decrease ROS levels, enhance the activity of glutathione (GSH), mitigate inflammation, augment the activity of glutathione peroxidase 4 (GPX4), inhibit ferroptosis, safeguard neurons, and facilitate the restoration of nerve function. Results from network pharmacology indicated that the action of CT might be mediated via the PI3K/Akt signaling pathway. Simultaneously, in-vivo investigations revealed that CT curbs ferroptosis through the PI3K/AKT/Nrf2 and SLC7A11/GPX4 signaling pathways. Conclusion CT can inhibit ferroptosis by inhibiting the vicious cycle between oxidative stress and inflammation, protect neurons and promote motor function recovery.
研究领域:
药理学
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神经科学
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PubMed
高影响因子
Frontiers in Pharmacology
·
2025
·
IF 4.8
Lili Huang,Yinqi Chen,Hua Zhou,Huihui Chen,Xiping Wu,Zhuochao Wu,Zhoudi Liu,Zhiwei Zheng
Background: Cerebral ischemia-reperfusion injury (CIRI) is a secondary brain injury that occurs after thrombolysis and is a primary cause of death in ischemic stroke patients. Antioxidants that effectively reduce oxidative stress are an efficient treatment approach for CIRI. Here, a novel diimide compound was synthesized using the chemical structure of previously designed anti-inflammatory skeletons.Methods and results: The antioxidant activities of five compounds (Z1–Z5) were preliminarily evaluated using the hydrogen peroxide-induced PC12 cell damage model, of which Z3 exhibited the best antioxidant effect, even exceeding that of the positive control (tert-butylhydroquinone). Enrichment analysis using network targeting and network pharmacology methods predicted seven candidate core target genes of Z3 in CIRI. Of these targets, computer molecular docking analysis predicted that Z3 has the strongest binding affinity for nuclear factor erythroid 2-related factor (Nrf2). MTT and colony formation assays, reactive oxygen species analysis, immunofluorescence, and immunoblotting experiments verified that Z3 reduced reactive oxygen species to play a protective antioxidant role via the Nrf2/hemoxygenase 1 (HO-1) pathway. The protective effect of Z3 in vivo was explored through TTC staining and neurobehavioral scoring of CIRI model mice.Conclusion: This study provides a new drug development strategy and candidate drug for the treatment of CIRI, offering ideas for the design of new antioxidants.
研究领域:
神经科学
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药理学
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PubMed
高影响因子
Molecular Medicine Reports
·
2021
·Vol. 24
·期 6
·1-9
·
IF 2.952
Juanjuan Huang,Xianfeng Chen,Aihua Xie
Formononetin has proven to be anti‑inflammatory and able to alleviate symptoms of certain allergic diseases. The present study aimed to determine and elucidate the potential effects of formononetin in allergic rhinitis. JME/CF15 cells were pretreated with formononetin at different doses, followed by stimulation with IL‑13. Cell Counting Kit‑8 assay was performed to determine the cytotoxicity of formononetin. The expression levels of inflammation‑related proteins, histamine, IgE, TNF‑α, IL‑1β, IL‑6, granulocyte‑macrophage colony‑stimulating factor and eotaxin in IL‑13‑stimulated JME/CF15 cells were detected using ELISAs. The expression levels of phosphorylated‑NF‑κB p65, NF‑κB p65 and cyclooxygenase‑2 (Cox‑2) were analyzed using western blotting. Reverse transcription‑quantitative PCR, western blotting and immunofluorescence were performed to measure the levels of mucin 5AC oligomeric mucus/gel‑forming. Expression levels of sirtuin 1 (SIRT1) and nuclear erythroid factor 2‑related factor 2 (Nrf2) proteins were also measured using western blotting. The results of the present study revealed that formononetin exerted no cytotoxic effect on the viability of JME/CF15 cells. Following stimulation of JME/CF15 cells with IL‑13, formononetin suppressed the upregulated expression levels of proinflammatory cytokines. IL‑13‑induced formation of mucus was also attenuated by formononetin treatment. Furthermore, it was found that the SIRT1/Nrf2 signaling pathway was activated in formononetin‑treated JME/CF15 cells, whereas treatment with the SIRT1 inhibitor, EX527, reversed the effects of formononetin on IL‑13‑induced inflammation and mucus formation in JME/CF15 cells. In conclusion, the findings of the current study indicated that formononetin may activate the SIRT1/Nrf2 signaling pathway, thereby inhibiting IL‑13‑induced inflammation and mucus formation in JME/CF15 cells. These results suggested that formononetin may represent a promising agent for the treatment of allergic rhinitis.
研究领域:
免疫学
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药理学
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细胞生物学
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过敏
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PubMed
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
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2023
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IF 5.4
Xiaoju Zhuge,Xiaosheng Jin,Tingting Ji,Rongzhou Li,Liwei Xue,Weilai Yu,Zijiao Quan,Haibin Tong,Fang Xu
Ethnopharmacological relevance The dried fruit of Gardenia jasminoides Ellis (Zhizi in Chinese) is a traditional medicine used for thousands of years in China, Japan and Korea. Zhizi was recorded in Shennong Herbal , as a folk medicine, it reduces fever and treats gastrointestinal disturbance with antiphlogistic effects. Geniposide , an iridoid glycoside , is an important bioactive compound derived from Zhizi and possesses remarkable antioxidant and anti-inflammatory capacities. The pharmacological efficacy of Zhizi is highly related to the antioxidant and anti-inflammatory effects of geniposide. Aim of the study Ulcerative colitis (UC) is a common chronic gastrointestinal disease as a global public health threat. Redox imbalance is an essential factor in the progression and recurrence of UC. This study aimed to explore the therapeutic effect of geniposide on colitis and uncover the underlying mechanisms of geniposide-mediated antioxidant and anti-inflammatory activities. Experimental design The study design involved investigating the novel mechanism by which geniposide ameliorates dextran sulfate sodium (DSS)-induced colitis in vivo and lipopolysaccharide (LPS)-challenged colonic epithelial cells in vitro . Materials and methods The protective effect of geniposide against colitis was evaluated by histopathologic observation and biochemical analysis of colonic tissues in DSS-induced colitis mice. The antioxidant and anti-inflammatory effects of geniposide were evaluated in both DSS-induced colitis mice and LPS-challenged colonic epithelial cells. Immunoprecipitation , drug affinity responsive target stability (DARTS), and molecular docking were performed to identify the potential therapeutic target of geniposide and the potential binding sites and patterns. Results Geniposide ameliorated the symptoms of DSS-induced colitis and colonic barrier injury, inhibited pro-inflammatory cytokine expression, and suppressed activation of the NF-κB signaling in colonic tissues of DSS-challenged mice. Geniposide also ameliorated lipid peroxidation and restored redox homeostasis in DSS-treated colonic tissues. In addition, in vitro experiments also showed that geniposide exhibited significant anti-inflammatory and antioxidant activity , as evidenced by suppressed IκB-α and p65 phosphorylation and IκB-α degradation, and enhanced the phosphorylation and transcriptional activity of Nrf2 in LPS-treated Caco2 cells. ML385, a specific Nrf2 inhibitor, abolished the protective effect of geniposide against LPS-induced inflammation. Mechanistically, geniposide could bind to KEAP1 , thereby disrupting the interaction between KEAP1 and Nrf2, preventing Nrf2 from degradation and activating the Nrf2/ARE signaling pathway, ultimately suppressing the onset of inflammation caused by redox imbalance. Conclusions Geniposide ameliorates colitis by activation of Nrf2/ARE signaling, while preventing colonic redox imbalance and inflammatory damage, indicating that geniposide can be considered as a promising lead compound for the treatment of colitis.
研究领域:
药理学
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胃肠病学
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分子生物学
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民族药理学
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PubMed
高影响因子
Chinese Medicine
·
2024
·Vol. 19
·期 1
·1-19
·
IF 5.3
Geng Xiaoyu,Wang Ying,Li Huan,Song Liang,Luo Chen,Gu Xiaojie,Zhong Haixin,Chen Huilin,Chen Xinzhu,Wang Jianwei,Pan Zheng
Background Lamiophlomis rotata (Benth.) Kudo ( L. rotata ), the oral Traditional Tibetan herbal medicine, is adopted for treating knife and gun wounds for a long time. As previously demonstrated, total iridoid glycoside extract of L. rotata (IGLR) induced polarization of M2 macrophage to speed up wound healing. In diabetic wounds, high levels inflammatory and chemotactic factors are usually related to high reactive oxygen species (ROS) levels. As a ROS target gene, nuclear factor erythroid 2-related factor 2 (NRF2), influences the differentiation of monocytes to M1/M2 macrophages. Fortunately, iridoid glycosides are naturally occurring active compounds that can be used as the oxygen radical scavenger. Nevertheless, the influence of IGLR in diabetic wound healing and its associated mechanism is largely unclear. Materials and methods With macrophages and dermal fibroblasts in vitro, as well as a thickness excision model of db/db mouse in vivo, the role of IGLR in diabetic wound
healing and the probable mechanism of the action were investigated. Results Our results showed that IGLR suppressed oxidative distress and inflammation partly through the NRF2/cyclooxygenase2 (COX2) signaling pathway in vitro . The intercellular communication between macrophages and dermal fibroblasts was investigated by the conditioned medium (CM) of IGLR treatment cells. The CM increased the transcription and translation of collagen I (COL1A1) and alpha smooth muscle actin (α-SMA) within fibroblasts. With diabetic wound mice, the data demonstrated IGLR activated the NRF2/KEAP1 signaling and the downstream targets of the pathway, inhibited COX2/PEG2 signaling and decreased the interaction inflammatory targets of the axis, like interleukin-1beta (IL-1β), interleukin 6 (IL-6), apoptosis-associated speck-like protein (ASC), cysteinyl aspartate specific proteinase1 (caspase1) and NOD-like receptor-containing protein 3 (NLRP3).In addition, the deposition of COL1A1, and the level of α-SMA, and Transforming growth factor-β1 (TGF-β1) obviously elevated, whereas that of pro-inflammatory factors reduced in the diabetic wound tissue with IGLR treatment. Conclusion IGLR suppressed oxidative distress and inflammation mainly through NRF2/COX2 axis, thus promoting paracrine and accelerating wound healing in diabetes mice. Graphical Abstract
研究领域:
药理学
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分子生物学
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传统医学
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PubMed
高影响因子
DRUG DELIVERY
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2018
·
IF 3.095
Qin-You Tan,Qian Hu,Sheng-Nan Zhu,Lu-Lu Jia,Juan Xiao,Hua-Zhen Su,Shao-Yuan Huang,Jing Zhang,Junfei Jin
Triptolide, the predominant biologically active component of the Chinese herb Tripterygium wilfordii Hook f., possesses numerous pharmacological activities, including anti-inflammatory, anti-fertility, anti-neoplastic, and immunosuppressive effects. However, toxicity and severe adverse effects, particularly hepatotoxicity, limit the clinical application of triptolide. Licorice root extract contains various bioactive compounds and is potent hepatoprotective. Magnesium isoglycyrrhizinate, a magnesium salt of the 18α-glycyrrhizic acid stereoisomer of glycyrrhizic acid, is used clinically in China to treat chronic viral hepatitis and acute drug-induced liver injury. The aim of this study was to investigate the role of the factor erythroid 2-related factor 2 pathway in the protective effects of LE and MIG against triptolide-induced hepatotoxicity. Hepatotoxicity models were established in L-02 cells and rats using triptolide, and the protective effects of LE and MIG were investigated in vitro and in vivo, respectively. LE and MIG significantly protected against triptolide-induced cytotoxicity. Additionally, triptolide decreased the mRNA and protein levels of Nrf2 and down-regulated Nrf2 target genes, including UGT1A, BSEP, and MRP2, while pretreatment with LE and MIG reversed these effects. Finally, Nrf2-involved antioxidant responses were activated in the presence of LE and MIG.
研究领域:
药理学
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毒理学
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肝病学
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分子生物学
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PubMed
高影响因子
INTERNATIONAL IMMUNOPHARMACOLOGY
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2023
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IF 5.6
Zhehuan Wang,Huiru Zhang,Caihong Qi,Hui Guo,Xiangyue Jiao,Jia Yan,Yifei Wang,Qiangsheng Li,Mingming Zhao,Xinhao Guo,Baoluo Wan,Xiaotian Li
Background Ursolic acid (UA) is a triterpenoid compound found in natural plants. It has been reported to have anti-inflammatory, antioxidant, and immunomodulatory properties. However, its role in atopic dermatitis (AD) is unknown. This study aimed to evaluate the therapeutic effect of UA in AD mice and explore the underlying mechanisms. Methods Balb/c mice were treated with 2, 4-dinitrochlorobenzene (DNCB) to induce AD-like lesions. During modeling and medication administration, dermatitis scores and ear thickness were measured. Subsequently, histopathological changes, levels of T helper cytokines, and oxidative stress markers levels were evaluated. Immunohistochemistry staining was used to assess changes in the expression of the nuclear factor of kappa B (NF-κB) and NF erythroid 2-related factor 2 (Nrf2). Furthermore, CCK8 assay, reactive oxygen species (ROS) assay, real-time PCR, and western blotting were employed to evaluate the effects of UA on ROS levels, inflammatory mediator production, and the NF-κB and Nrf2 pathways in TNF-α/IFN-γ-stimulated HaCaT cells. Results The results showed that UA significantly reduced dermatitis score and ear thickness, effectively inhibited skin proliferation and mast cell infiltration in AD mice, and decreased the expression level of T helper cytokines. Meanwhile, UA improved oxidative stress in AD mice by regulating lipid peroxidation and increasing the activity of antioxidant enzymes. In addition, UA inhibited ROS accumulation and chemokine secretion in TNF-α/IFN-γ-stimulated HaCaT cells. It might exert anti-dermatitis effects by inhibiting the TLR4/NF-κB pathway and activating the Nrf2/HO-1 pathway. Conclusion Taken together, our results suggest that UA may have potential therapeutic effects on AD and could be further studied as a promising drug for AD treatment.
研究领域:
药理学
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免疫学
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皮肤科
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PubMed
高影响因子
Biochemistry and Cell Biology
·
2020
·Vol. 98
·期 2
·
IF 2.46
Xue-liang Zhou,Xia Wu,Rong-rong Zhu,Hua Xu,Yun-yun Li,Qi-rong Xu,Sheng Liu,Song-qing Lai,Xinping Xu,Li Wan,Qi-cai Wu,Ji-chun Liu
Both the Notch1 and Keap1–Nrf2 signaling pathways have cardioprotective effects, but the role of Notch1–Nrf2 crosstalk in myocardial ischemia–reperfusion injury is unclear. In this study, we established hypoxia–reoxygenation in neonate rat myocardial cells and employed γ-secretase inhibitor and curcumin to inhibit and activate the Notch1 and Keap1–Nrf2 signaling pathways, respectively. We found that the combined action of the Notch1 and Keap1–Nrf2 signaling pathways significantly increased cardiomyocyte viability, inhibited cardiomyocyte apoptosis, reduced the formation of reactive oxygen species, and increased antioxidant activities. In conclusion, these findings suggest that Notch1–Nrf2 crosstalk exerts myocardial protection by reducing the formation of reactive oxygen species.
研究领域:
心脏病学
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分子生物学
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细胞生物学
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PubMed
高影响因子
JOURNAL OF BIOCHEMICAL AND MOLECULAR TOXICOLOGY
·
2022
·Vol. 36
·期 4
·e22995
·
IF 3.568
Shiqi Li,Jinwen Yuan,Siyan Che,Li Zhang,Zheng Ruan,Xiaoming Sun
Polybrominated diphenyl ethers (PBDEs) are widely used brominated flame retardants as commercial products. PBDEs have been demonstrated to induce hepatic, reproductive, neural, and thyroid toxicity effects. This study aimed to clarify the potential intestinal toxicity effects of decabrominated diphenyl ether (PBDE-209) in vivo and in vitro. First, we investigated the change of PBDE-209 on oxidative stress in the intestine of mice. Subsequently, the potential toxicity mechanism of PBDE-209 in vitro was investigated. Caco-2 cells were treated with different concentrations of PBDE-209 (1, 5, and 25 μmol/L) for 24 and 48 h. We determined the cell viability, reactive oxygen species (ROS) level, multiple cellular parameters, and relative mRNA expressions. The results showed that PBDE-209 significantly injured the colon of mice, increased the intestinal levels of malondialdehyde (MDA), and changed the antioxidant enzyme activities. PBDE-209 inhibited the proliferation and induced cytotoxicity of Caco-2 cells. The change in ROS production and mitochondrial membrane potential (MMP) revealed that PBDE-209 caused oxidative stress in Caco-2 cells. The real-time PCR assays revealed that PBDE-209 inhibited the mRNA expression level of antioxidative defense factor, nuclear factor erythroid 2-related factor 2 (Nrf2). Furthermore, the FAS and Cytochrome P450 1A1 (CYP1A1) mRNA expression levels were increased in Caco-2 cells. These results suggested that PBDE-209 exerts intestinal toxicity effects in vivo and in vitro and inhibits the antioxidative defense gene expression in Caco-2 cells. This study provides an opportunity to advance the understanding of toxicity by the persistent environmental pollutant PBDE-209 to the intestine. Highlights Long-time exposure to decabromodiphenyl ether (PBDE-209) causes oxidative stress and induced intestinal damage in mice. PBDE-209 induces cell apoptosis via upregulation of FAS expression in Caco-2 cells. PBDE-209 inhibits the Keap1-Nrf2 antioxidant defense pathway in Caco-2 cells.
研究领域:
毒理学
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环境科学
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细胞生物学
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分子生物学
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PubMed
高影响因子
JOURNAL OF INORGANIC BIOCHEMISTRY
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2022
·
IF 4.336
Xueru Wang,Ruiming Hu,Chang Wang,Zejing Wei,Shaoxing Pi,Yong Li,Guyue Li,Fan Yang,Caiying Zhang
Excessive molybdenum (Mo) and cadmium (Cd) have toxic effects on animals. However, hepatotoxicity co-induced by Mo and Cd in ducks is still unclear. To evaluate the effects of Cd and Mo co-exposure on autophagy by nuclear factor erythroid 2-related factor 2 (Nrf2)-mediated antioxidant defense and endoplasmic reticulum stress (ERS) in duck livers, 40 healthy 7-day-old ducks were randomly assigned to 4 groups and fed diets containing different doses of Mo and/or Cd for 16 weeks, respectively. The results verified that Mo and/or Cd induced oxidative stress via decreasing glutathione peroxidase (GSH-Px), catalase (CAT), and total-superoxide dismutase (T-SOD) activities and increasing hydrogen peroxide (H 2 O 2 ) and malondialdehyde (MDA) concentrations; inhibited Nrf2 axis by downregulating the pathway-related genes and proteins expression levels , and activated ERS through upregulating the protein kinase RNA-like endoplasmic reticulum kinase (PERK)/eukaryotic initiation factor 2a (eIF2a), inositol-requiring enzyme 1 (IRE1) and activating transcription factor 6 (ATF6) pathway-related genes and proteins expression levels, which triggered autophagy via increasing autophagosomes , light chain 3 (LC3) puncta, LC3A, LC3B, autophagy-related gene 5 (Atg5), Bcl-2-interacting protein (Beclin-1) mRNA levels and Beclin-1, microtubule-associated protein light chain 3 II/I (LC3II/LC3I) protein levels, decreasing Dynein, p62 , mammalian target of rapamycin (mTOR) mRNA levels and p62 protein level. Additionally, the changes in Mo and Cd group were the most obvious. Briefly, our study reveals that autophagy induced by Mo and/or Cd may be associated with the activation of crosstalk between Nrf2-mediated antioxidant defense response and ERS in duck livers. Mo and Cd may aggravate toxic damage to the liver.
研究领域:
毒理学
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分子生物学
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兽医学
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PubMed
高影响因子
Frontiers in Pharmacology
·
2024
·
IF 4.4
Shu Long,Fu Hangjie,Pi Aiwen,Feng Yuliang,Dong Hui,Si Caijuan,Li Songtao,Zhu Feiye,Zheng Peifen,Zhu Qin
Ulcerative colitis (UC) is a recurring inflammatory bowel disease, in which oxidative stress plays a role in its progression, and regulation of the oxidative/antioxidative balance has been suggested as a potential target for the treatment of UC. The aim of this study was to evaluate the protective effect of andrographolide against UC and its potential antioxidant properties by modulating the nuclear factor erythroid 2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) pathway. Dextran sulfate sodium (DSS) -induced UC mice and the LPS-induced HT29 inflammatory cell model were established to uncover the potential mechanisms of andrographolide. ML385, a Nrf2 inhibitor, was used in both models to assess whether andrographolide exerts a protective effect against UC through the Nrf2/HO-1 pathway. The in vivo experiment showed that andrographolide ameliorated the symptoms and histopathology of DSS-induced mice and restored the expressions of ZO-1, Occludin-1 and Claudin-1. Meanwhile, DSS-induced oxidative stress and inflammation were suppressed by andrographolide treatment, along with the upregulation of key proteins in the Nrf2/HO-1 pathway. In vitro experiments showed that andrographolide attenuated LPS-induced excessive generation of ROS in HT29 cells, reduced inflammatory factors, and upregulated the expression of proteins related to tight junctions and Nrf2/HO-1 pathway. In addition, ML385 abolished the beneficial effect of andrographolide. In conclusion, the protective effect of andrographolide against UC may involve the suppression of oxidative stress and inflammation via the Nrf2/HO-1 pathway.
研究领域:
药理学
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炎症性肠病
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分子生物学
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DOI
PubMed
高影响因子
Journal of Functional Foods
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2022
·
IF 5.223
Jinyuan Wang,Yinyan Yin,Nuo Xu,Bangyue Zhou,Tao Qin
In the bacterial infection of humans, sepsis is of great concern based on its high fatality rate. Correction of immune dysfunction by targeting dendritic cells (DCs) is a promising strategy for sepsis therapy. Royal jelly, a natural health product, is produced by worker bees for feeding queens. In the study, we evaluated whether royal jelly could attenuate LPS-induced immune dysfunction of DCs. We found that royal jelly reduced the expression levels of mature phenotype (MHCII, CD40, CD80, and CD86), activation marker (CD69), and inflammatory cytokines (TNF-α, IL-6, and IL-10) in LPS-induced DCs. In addition, royal jelly enhanced the endocytosis levels and abrogated allogeneic CD4 + T cell proliferation in LPS-induced DCs. Finally, we found that the Nrf2/HO-1 axis played a vital role in the inhibition of LPS-induced immune dysfunction of DCs by royal jelly. These results indicated that royal jelly had a potential application in sepsis therapy by regulating DC function.
研究领域:
免疫学
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药理学
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细胞生物学
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传染病学
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产品关联
DOI
高影响因子