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Xu D, Liu D, Jiang N, Xie Y, He D, Cheng J, Liu J, Fu S, Hu G. Narirutin mitigates dextrose sodium sulfate-induced colitis in mice by modulating intestinal flora. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 130:155730. [PMID: 38759313 DOI: 10.1016/j.phymed.2024.155730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 04/26/2024] [Accepted: 05/09/2024] [Indexed: 05/19/2024]
Abstract
BACKGROUND Ulcerative colitis (UC) is a prolonged inflammatory disease of the gastrointestinal tract. Current therapeutic options remain limited, underscoring the imperative to explore novel therapeutic strategies. Narirutin (NR), a flavonoid naturally present in citrus fruits, exhibits excellent anti-inflammatory effects in vitro, yet its in vivo efficacy, especially in UC, remains underexplored. OBJECTIVE This work examined the effect of NR on dextrose sodium sulfate (DSS)-induced UC in mice in vivo, with a specific focus on the role of gut flora in it. METHODS The effects of NR (10, 20, and 40 mg/kg) on DSS-induced UC in mice were investigated by monitoring changes in body weight, disease activity index (DAI) scores, colon length, and histological damage. Colonic levels of pro-inflammatory mediators, tight junction (TJ) proteins, and inflammation-related signaling pathway proteins were analyzed via enzyme-linked immunosorbent assay, western blot, and immunofluorescence. The role of gut microbiota in NR against colitis was analyzed through 16S rRNA sequencing, flora clearance assays, and fecal microbiota transplantation (FMT) assays. RESULTS NR administration suppressed DSS-induced colitis as reflected in a decrease in body weight loss, DAI score, colon length shortening, and histological score. Furthermore, NR administration preserved the integrity of the DSS-induced intestinal barrier by inhibiting the reduction of TJ proteins (claudin3, occludin, and zonula occludens-1). Moreover, NR administration markedly repressed the activation of the toll-like receptor 4-mitogen-activated protein kinase/nuclear factor-κB pathway and reduced the amount of pro-inflammatory mediators in the colon. Importantly, the results of 16S rRNA sequencing showed that the intestinal flora of mice with colitis exhibited richer microbial diversity following NR administration, with elevated abundance of Lactobacillaceae (Lactobacillus) and decreased abundance of Bacteroidaceae (Bacteroides) and Shigella. In addition, the anti-colitis effect of NR almost disappeared after gut flora clearance. Further FMT assay also validated this gut flora-dependent protective mechanism of NR. CONCLUSION Our findings suggest that NR is a prospective natural compound for the management of UC by modulating intestinal flora.
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Affiliation(s)
- Dianwen Xu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Dianfeng Liu
- College of Animal Science, Jilin University, Changchun, China
| | - Naiyuan Jiang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun 130118, China
| | - Yachun Xie
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Dewei He
- College of Animal Science, Jilin University, Changchun, China
| | - Ji Cheng
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Juxiong Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Shoupeng Fu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Guiqiu Hu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis, and College of Veterinary Medicine, Jilin University, Changchun 130062, China.
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Liu HL, Huang Z, Li QZ, Cao YZ, Wang HY, Alolgab RN, Deng XY, Zhang ZH. Schisandrin A alleviates renal fibrosis by inhibiting PKCβ and oxidative stress. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2024; 126:155372. [PMID: 38382281 DOI: 10.1016/j.phymed.2024.155372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 01/01/2024] [Accepted: 01/16/2024] [Indexed: 02/23/2024]
Abstract
BACKGROUND Renal fibrosis is a common pathway that drives the advancement of numerous kidney maladies towards end-stage kidney disease (ESKD). Suppressing renal fibrosis holds paramount clinical importance in forestalling or retarding the transition of chronic kidney diseases (CKD) to renal failure. Schisandrin A (Sch A) possesses renoprotective effect in acute kidney injury (AKI), but its effects on renal fibrosis and underlying mechanism(s) have not been studied. STUDY DESIGN Serum biochemical analysis, histological staining, and expression levels of related proteins were used to assess the effect of PKCβ knockdown on renal fibrosis progression. Untargeted metabolomics was used to assess the effect of PKCβ knockdown on serum metabolites. Unilateral Ureteral Obstruction (UUO) model and TGF-β induced HK-2 cells and NIH-3T3 cells were used to evaluate the effect of Schisandrin A (Sch A) on renal fibrosis. PKCβ overexpressed NIH-3T3 cells were used to verify the possible mechanism of Sch A. RESULTS PKCβ was upregulated in the UUO model. Knockdown of PKCβ mitigated the progression of renal fibrosis by ameliorating perturbations in serum metabolites and curbing oxidative stress. Sch A alleviated renal fibrosis by downregulating the expression of PKCβ in kidney. Treatment with Sch A significantly attenuated the upregulated proteins levels of FN, COL-I, PKCβ, Vimentin and α-SMA in UUO mice. Moreover, Sch A exhibited a beneficial impact on markers associated with oxidative stress, including MDA, SOD, and GSH-Px. Overexpression of PKCβ was found to counteract the renoprotective efficacy of Sch A in vitro. CONCLUSION Sch A alleviates renal fibrosis by inhibiting PKCβ and attenuating oxidative stress.
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Affiliation(s)
- Hui-Ling Liu
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Zhou Huang
- Key Laboratory of Tropical Biological Resources of Ministry of Education and One Health Institute, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Qing-Zhen Li
- Key Laboratory of Tropical Biological Resources of Ministry of Education and One Health Institute, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Yi-Zhi Cao
- Key Laboratory of Tropical Biological Resources of Ministry of Education and One Health Institute, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Han-Yu Wang
- Key Laboratory of Tropical Biological Resources of Ministry of Education and One Health Institute, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Raphael N Alolgab
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China
| | - Xue-Yang Deng
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
| | - Zhi-Hao Zhang
- Key Laboratory of Tropical Biological Resources of Ministry of Education and One Health Institute, School of Pharmaceutical Sciences, Hainan University, Haikou 570228, China; State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 211198, China.
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Xu D, Xie Y, Cheng J, He D, Liu J, Fu S, Hu G. Amygdalin Alleviates DSS-Induced Colitis by Restricting Cell Death and Inflammatory Response, Maintaining the Intestinal Barrier, and Modulating Intestinal Flora. Cells 2024; 13:444. [PMID: 38474407 DOI: 10.3390/cells13050444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 02/23/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
Inflammatory bowel disease (IBD) refers to a cluster of intractable gastrointestinal disorders with an undetermined etiology and a lack of effective therapeutic agents. Amygdalin (Amy) is a glycoside extracted from the seeds of apricot and other Rosaceae plants and it exhibits a wide range of pharmacological properties. Here, the effects and mechanisms of Amy on colitis were examined via 16S rRNA sequencing, ELISA, transmission electron microscopy, Western blot, and immunofluorescence. The results showed that Amy administration remarkably attenuated the signs of colitis (reduced body weight, increased disease activity index, and shortened colon length) and histopathological damage in dextran sodium sulfate (DSS)-challenged mice. Further studies revealed that Amy administration significantly diminished DSS-triggered gut barrier dysfunction by lowering pro-inflammatory mediator levels, inhibiting oxidative stress, and reducing intestinal epithelial apoptosis and ferroptosis. Notably, Amy administration remarkably lowered DSS-triggered TLR4 expression and the phosphorylation of proteins related to the NF-κB and MAPK pathways. Furthermore, Amy administration modulated the balance of intestinal flora, including a selective rise in the abundance of S24-7 and a decline in the abundance of Allobaculum, Oscillospira, Bacteroides, Sutterella, and Shigella. In conclusion, Amy can alleviate colitis, which provides data to support the utility of Amy in combating IBD.
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Affiliation(s)
- Dianwen Xu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Yachun Xie
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Ji Cheng
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Dewei He
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Juxiong Liu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Shoupeng Fu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
| | - Guiqiu Hu
- State Key Laboratory for Diagnosis and Treatment of Severe Zoonotic Infectious Diseases, Key Laboratory for Zoonosis Research of the Ministry of Education, Institute of Zoonosis and College of Veterinary Medicine, Jilin University, Changchun 130062, China
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Liu K, Shi C, Yan C, Yin Y, Qiu L, He S, Chen W, Li G. Fufangxiaopi formula alleviates DSS-induced colitis in mice by inhibiting inflammatory reaction, protecting intestinal barrier and regulating intestinal microecology. JOURNAL OF ETHNOPHARMACOLOGY 2024; 319:117365. [PMID: 38380568 DOI: 10.1016/j.jep.2023.117365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 10/25/2023] [Accepted: 10/27/2023] [Indexed: 02/22/2024]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Fufangxiaopi Formula (FF) is a modified form of Sishen Wan, traditionally used for treating diarrhea. The application of FF for treating ulcerative colitis (UC) has achieved desirable outcomes in clinical settings. However, the underlying mechanism of the effect of FF on UC is yet to be determined. AIM OF STUDY This study aimed to evaluate the protective effect and underlying mechanism of FF on mice with dextran sodium sulfate (DSS)-induced colitis. MATERIALS AND METHODS In vivo, the efficacy of FF on the symptoms associated with DSS-induced colitis in mice was clarified by observing the body weight change, colon length, DAI score, and H&E staining. The release of inflammatory mediators in mouse colon tissues was detected by ELISA and MPO, and the contents of TLR4/NF-κB signaling pathway and MAPK signaling pathway-related proteins, as well as intestinal barrier-related proteins, were detected in mouse colon tissues by western blot method. Changes in the content of barrier proteins in mouse colon tissues were detected by immunofluorescence. 16S rRNA sequencing and FMT were performed to clarify the effects of FF on intestinal flora. In vitro, the effect of FF-containing serum on LPS-induced inflammatory mediator release from RAW264.7 cells were detected by qRT-PCR. The contents of TLR4/NF The effects of FF-containing serum on B signaling pathway and MAPK signaling pathway related proteins in RAW264.7 cells and intestinal barrier related proteins in Caco-2 cells were detected by western blot. The effects of FF-containing serum on LPS-induced nuclear translocation of p65 protein in RAW264.7 cells and barrier-associated protein in Caco-2 cells were detected by immunofluorescence. RESULTS In vivo studies showed that FF could significantly alleviate the symptoms of UC, including reducing colon length, weight loss, clinical score, and colon tissue injury in mice. FF could significantly reduce the secretion of proinflammatory cytokines by suppressing the activation of the TLR4/NF-κB and MAPK signaling pathways. Moreover, FF could protect the integrity of intestinal barriers by significantly increasing claudin-3, occludin, and ZO-1 expression levels. 16S rRNA sequencing and FMT elucidate that FF can alleviate symptoms associated with colitis in mice by interfering with intestinal flora. In vitro studies showed that FF drug-containing serum could significantly inhibit proinflammatory responses and attenuate the secretion of iNOS, IL-1β, TNF-α, IL-6, and COX-2 by suppressing the activation of TLR4/NF-κB and MAPK signaling pathways in RAW264.7 cells. Furthermore, FF could protect the Caco-2 cell epithelial barrier. CONCLUSION FF could alleviate DSS-induced colitis in mice by maintaining the intestinal barrier, inhibiting the activation of TLR4/NF-κB and MAPK signaling pathways, reducing the release of proinflammatory factors, and regulating intestinal microecology.
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Affiliation(s)
- Kunjian Liu
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Chong Shi
- Anorectal Department, First Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, 130021, China
| | - Chengqiu Yan
- Anorectal Department, First Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, 130021, China
| | - Yu Yin
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Li Qiu
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Shuangyan He
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, 130117, China
| | - Weijie Chen
- Office of Student Affairs, First Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, 130021, China
| | - Guofeng Li
- Anorectal Department, First Affiliated Hospital of Changchun University of Traditional Chinese Medicine, Changchun, 130021, China.
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Khan S, Wang T, Cobo ER, Liang B, Khan MA, Xu M, Qu W, Gao J, Barkema HW, Kastelic JP, Liu G, Han B. Antioxidative Sirt1 and the Keap1-Nrf2 Signaling Pathway Impair Inflammation and Positively Regulate Autophagy in Murine Mammary Epithelial Cells or Mammary Glands Infected with Streptococcus uberis. Antioxidants (Basel) 2024; 13:171. [PMID: 38397769 PMCID: PMC10886112 DOI: 10.3390/antiox13020171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 01/19/2024] [Accepted: 01/26/2024] [Indexed: 02/25/2024] Open
Abstract
Streptococcus uberis mastitis in cattle infects mammary epithelial cells. Although oxidative responses often remove intracellular microbes, S. uberis survives, but the mechanisms are not well understood. Herein, we aimed to elucidate antioxidative mechanisms during pathogenesis of S. uberis after isolation from clinical bovine mastitis milk samples. S. uberis's in vitro pathomorphology, oxidative stress biological activities, transcription of antioxidative factors, inflammatory response cytokines, autophagosome and autophagy functions were evaluated, and in vivo S. uberis was injected into the fourth mammary gland nipple of each mouse to assess the infectiousness of S. uberis potential molecular mechanisms. The results showed that infection with S. uberis induced early oxidative stress and increased reactive oxygen species (ROS). However, over time, ROS concentrations decreased due to increased antioxidative activity, including total superoxide dismutase (T-SOD) and malondialdehyde (MDA) enzymes, plus transcription of antioxidative factors (Sirt1, Keap1, Nrf2, HO-1). Treatment with a ROS scavenger (N-acetyl cysteine, NAC) before infection with S. uberis reduced antioxidative responses and the inflammatory response, including the cytokines IL-6 and TNF-α, and the formation of the Atg5-LC3II/LC3I autophagosome. Synthesis of antioxidants determined autophagy functions, with Sirt1/Nrf2 activating autophagy in the presence of S. uberis. This study demonstrated the evasive mechanisms of S. uberis in mastitis, including suppressing inflammatory and ROS defenses by stimulating antioxidative pathways.
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Affiliation(s)
- Sohrab Khan
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Tian Wang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Eduardo R. Cobo
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (E.R.C.); (H.W.B.); (J.P.K.)
| | - Bingchun Liang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Muhammad Asfandyar Khan
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Maolin Xu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Weijie Qu
- College of Veterinary Medicine, Yunnan Agricultural University, Kunming 650201, China;
| | - Jian Gao
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Herman W. Barkema
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (E.R.C.); (H.W.B.); (J.P.K.)
| | - John P. Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, AB T2N 4N1, Canada; (E.R.C.); (H.W.B.); (J.P.K.)
| | - Gang Liu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
| | - Bo Han
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China; (S.K.); (T.W.); (B.L.); (M.A.K.); (M.X.); (J.G.)
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Wu S, Guo W, Chen L, Lin X, Tang M, Lin C, Guo H, Zhang T, Gao Y. Downregulation of Gadd45β alleviates osteoarthritis by repressing lipopolysaccharide-induced fibroblast-like synoviocyte inflammation, proliferation and migration. Int Immunopharmacol 2024; 126:111202. [PMID: 37988908 DOI: 10.1016/j.intimp.2023.111202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Revised: 11/06/2023] [Accepted: 11/07/2023] [Indexed: 11/23/2023]
Abstract
OBJECTIVE Gadd45β have a regulatory role in cellular inflammation, proliferation and migration. However, the role of Gadd45β in synovial inflammation in osteoarthritis (OA) remains to be explored. This study aimed to ascertain whether Gadd45β is involved in OA synovial inflammation. METHODS The rat model was induced by sodium iodoacetate and the cellular model was constructed with lipopolysaccharide (LPS)-induced fibroblast-like synoviocytes (FLSs). siRNA was applied to interfere with the expression of intracellular Gadd45β. Real-time quantitative polymerase chain reaction (RT-qPCR) and western blotting were used to detect the expression of Gadd45β mRNA and protein. The inflammation, proliferation, and migration of OA-FLSs were detected by enzyme-linked immunosorbent assay, cell scratch assay, 5-ethynyl-2'-deoxyuridine assay, etc. The effect of downregulation of Gadd45β on the nuclear factor-κB (NF-κB) pathway was investigated. RESULTS Expression of Gadd45β in OA rat synovial tissues and OA-FLSs was increased, and LPS treatment promoted cell proliferation and enhanced cell migration. Gadd45β interference inhibited the inflammation, proliferation and migration of cells induced by LPS. LPS promoted P65 expression in the nucleus and activated the NF-κB signaling pathway, whereas si-Gadd45β reversed this situation. CONCLUSIONS si-Gadd45β inhibited the inflammatory response, proliferation and migration of FLSs, and activation of the NF-κB signaling pathway, which could delay the progression of OA. Hence, it may become a potential therapeutic target for OA.
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Affiliation(s)
- Suyu Wu
- The School of Medical Technology and Engineering, Fujian Medical University, Fuzhou 350122, Fujian, China
| | - Wenwen Guo
- The School of Medical Technology and Engineering, Fujian Medical University, Fuzhou 350122, Fujian, China
| | - Ling Chen
- The School of Medical Technology and Engineering, Fujian Medical University, Fuzhou 350122, Fujian, China
| | - Xinxin Lin
- The School of Medical Technology and Engineering, Fujian Medical University, Fuzhou 350122, Fujian, China; Department of Pathology, Fuzhou Second Hospital, Fuzhou 350007, Fujian, China
| | - Minjie Tang
- Department of Laboratory Medicine, the First Affiliated Hospital of Fujian Medical University, Fuzhou 350005, Fujian, China
| | - Cheng Lin
- The School of Health, Fujian Medical University, Fuzhou 350122, Fujian, China
| | - Hanzhi Guo
- The School of Medical Technology and Engineering, Fujian Medical University, Fuzhou 350122, Fujian, China
| | - Tianwen Zhang
- Fujian Fishery Resources Monitoring Center, Fuzhou 350003, Fujian, China
| | - Yao Gao
- The School of Medical Technology and Engineering, Fujian Medical University, Fuzhou 350122, Fujian, China; Key Laboratory of Clinical Laboratory Technology for Precision Medicine (Fujian Medical University), Fujian Province University, Fuzhou 350004, Fujian, China.
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He X, Wang J, Sun L, Ma W, Li M, Yu S, Zhou Q, Jiang J. Wogonin attenuates inflammation and oxidative stress in lipopolysaccharide-induced mastitis by inhibiting Akt/NF-κB pathway and activating the Nrf2/HO-1 signaling. Cell Stress Chaperones 2023; 28:989-999. [PMID: 37910344 PMCID: PMC10746643 DOI: 10.1007/s12192-023-01391-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 09/29/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023] Open
Abstract
Mastitis is a disease involved in inflammation of breast which affects human and animals. Wogonin is one bioactive compound from many Chinese herbal medicines, which have multiple properties, including anti-inflammatory activity. However, the roles of wogonin in mastitis progression are largely undefined. Mastitis models were established using LPS-treated mice and mammary epithelial cells (MECs). Infiltration of inflammatory cells was analyzed by hematoxylin-eosin staining and myeloperoxidase (MPO) activity. Inflammatory cytokine (TNF-α and IL-1β) levels were detected via ELISA. The phosphorylation and total of Akt and NF-κB levels and content of Nrf2 and HO-1 were measured via western blot. Cell viability was examined by CCK-8 assay. Oxidative stress was assessed by ROS generation and levels of MDA, GSH, and SOD. Wogonin attenuated LPS-induced infiltration of inflammatory cells, increase of MPO activity and levels of TNF-α and IL-1β, and activation of the Akt/NF-κB pathway in murine mammary gland tissues, and promoted activation of Nrf2/HO-1 signaling. Wogonin did not affect MEC viability, but mitigated LPS-induced inflammation in MECs by reducing TNF-α and IL-1β levels. Wogonin relieved LPS-induced oxidative stress in MECs through decreasing ROS generation and MDA level and increasing GSH and SOD levels. Wogonin repressed LPS-induced activation of the Akt/NF-κB pathway in MECs and increased Nrf2/HO-1 signaling activation. Activated Akt/NF-κB signaling or Nrf2/HO-1 signaling inactivation reversed the suppressive effects of wogonin on LPS-induced inflammation and oxidative stress in MECs. Wogonin mitigates LPS-induced inflammation and oxidative stress of MECs via suppressing activation of the Akt/NF-κB signaling and activating Nrf2/HO-1 pathway, indicating the therapeutic potential of wogonin in mastitis.
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Affiliation(s)
- Xin He
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Juan Wang
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Lei Sun
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Wenqi Ma
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Miao Li
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Shanshan Yu
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China
| | - Qi Zhou
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.
| | - Jue Jiang
- Department of Ultrasound, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China.
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Jia M, Zhou L, Lou Y, Yang X, Zhao H, Ouyang X, Huang Y. An analysis of the nutritional effects of Schisandra chinensis components based on mass spectrometry technology. Front Nutr 2023; 10:1227027. [PMID: 37560060 PMCID: PMC10408133 DOI: 10.3389/fnut.2023.1227027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/12/2023] [Indexed: 08/11/2023] Open
Abstract
OBJECTIVE Schisandra chinensis (Turcz.) Baill. (S. chinensis) is a Traditional Chinese medicinal herb that can be used both for medicinal purposes and as a food ingredient due to its beneficial properties, and it is enriched with a wide of natural plant nutrients, including flavonoids, phenolic acids, anthocyanins, lignans, triterpenes, organic acids, and sugars. At present, there is lack of comprehensive study or systemic characterization of nutritional and active ingredients of S. chinensis using innovative mass spectrometry techniques. METHODS The comprehensive review was conducted by searching the PubMed databases for relevant literature of various mass spectrometry techniques employed in the analysis of nutritional components in S. chinensis, as well as their main nutritional effects. The literature search covered the past 5 years until March 15, 2023. RESULTS The potential nutritional effects of S. chinensis are discussed, including its ability to enhance immunity, function as an antioxidant, anti-allergen, antidepressant, and anti-anxiety agent, as well as its ability to act as a sedative-hypnotic and improve memory, cognitive function, and metabolic imbalances. Meanwhile, the use of advanced mass spectrometry detection technologies have the potential to enable the discovery of new nutritional components of S. chinensis, and to verify the effects of different extraction methods on these components. The contents of anthocyanins, lignans, organic acids, and polysaccharides, the main nutritional components in S. chinensis, are also closely associated to its quality. CONCLUSION This review will provide guidelines for an in-depth study on the nutritional value of S. chinensis and for the development of healthy food products with effective components.
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Affiliation(s)
- Mengzhen Jia
- Department of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Li Zhou
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, China
| | - Yuanyuan Lou
- Department of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Xiaoqing Yang
- Department of Pediatrics, The First Affiliated Hospital of Henan University of CM, Zhengzhou, Henan, China
| | - Hangyu Zhao
- Department of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, Henan, China
| | - Xinshou Ouyang
- Department of Internal Medicine, Digestive Disease Section, Yale University, New Haven, CT, United States
| | - Yanjie Huang
- Department of Pediatrics, Henan University of Chinese Medicine, Zhengzhou, Henan, China
- Department of Pediatrics, The First Affiliated Hospital of Henan University of CM, Zhengzhou, Henan, China
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9
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Qiu Q, Zhang W, Liu K, Huang F, Su J, Deng L, He J, Lin Q, Luo L. Schisandrin A ameliorates airway inflammation in model of asthma by attenuating Th2 response. Eur J Pharmacol 2023:175850. [PMID: 37329976 DOI: 10.1016/j.ejphar.2023.175850] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/09/2023] [Accepted: 06/09/2023] [Indexed: 06/19/2023]
Abstract
Asthma is a persistent respiratory ailment that displays periodicity and is linked to the equilibrium of T cells. Several compounds obtained from Chinese herbal medicines display beneficial impacts on T cell regulation and the attenuation of inflammatory mediator synthesis. Schisandrin A, an active lignan derived from the Schisandra fruit, exhibits anti-inflammatory characteristics. In the present study, the network analysis conducted revealed that the nuclear factor-kappaB (NF-κB) signaling pathway is likely a prominent contributor to the anti-asthmatic effects of schisandrin A. In addition, it has been established that the inhibition of cyclooxygenase 2 (COX-2/PTGS2) is likely a significant factor in this process. The results of in vitro experiments have substantiated that schisandrin A can effectively lower the expression of COX-2 and inducible nitric oxide synthase (iNOS) in 16 HBE cells and RAW264.7 cells in a manner that is dependent on the dosage administered. It was able to effectively reduce the activation of the NF-κB signaling pathway while simultaneously improving the injury to the epithelial barrier function. Furthermore, an investigation utilizing immune infiltration as a metric revealed an inequity in Th1/Th2 cells and a surge in Th2 cytokines in asthma patients. In the OVA-induced asthma mice model, it was observed that schisandrin A treatment effectively suppressed inflammatory cell infiltration, reduced the Th2 cell ratio, inhibited mucus secretion, and prevented airway remodeling. To summarize, the administration of schisandrin A has been found to effectively alleviate the symptoms of asthma by impeding the production of inflammation, which includes reducing the Th2 cell ratio and improving the integrity of the epithelial barrier function. These findings offer valuable insights into the potential therapeutic applications of schisandrin A for the treatment of asthma.
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Affiliation(s)
- Qin Qiu
- Graduate School, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Weizhen Zhang
- Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdon, 51000, China
| | - Kangdi Liu
- The First Clinical College, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Fangfang Huang
- Graduate School, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Jiating Su
- The First Clinical College, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Liyan Deng
- Graduate School, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Jiake He
- The First Clinical College, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Qianwen Lin
- Department of Pediatrics, The Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, 524023, China
| | - Lianxiang Luo
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong, 524023, China; The Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang, Guangdong, 524023, China.
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10
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Chen Z, Luo X, Liu M, Jiang J, Li Y, Huang Z, Wang L, Cao J, He L, Huang S, Hu H, Li L, Chen L. Elabela-apelin-12, 17, 36/APJ system promotes platelet aggregation and thrombosis via activating the PANX1-P2X7 signaling pathway. J Cell Biochem 2023; 124:586-605. [PMID: 36855998 DOI: 10.1002/jcb.30392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 05/31/2022] [Accepted: 02/15/2023] [Indexed: 03/02/2023]
Abstract
The elabela-apelin/angiotensin domain type 1 receptor-associated protein (APJ) system is an important regulator in certain thrombosis-related diseases such as atherosclerosis, myocardial infarction, and cerebral infarction. Our previous reports have revealed that apelin exacerbates atherosclerotic lesions. However, the relationship between the elabela-apelin/APJ system and platelet aggregation and atherothrombosis is unclear. The results of the present study demonstrate that elabela and other endogenous ligands such as apelin-12, -17, and -36 induce platelet aggregation and thrombosis by activating the pannexin1(PANX1)-P2X7 signaling pathway. Interestingly, the diuretic, spironolactone, a novel PANX1 inhibitor, alleviated elabela- and apelin isoforms-induced platelet aggregation and thrombosis. Significantly, two potential antithrombotic drugs were screened out by targeting APJ receptors, including the anti-HIV ancillary drug cobicistat and the traditional Chinese medicine monomer Schisandrin A. Both cobicistat and Schisandrin A abolished the effects of elabela and apelin isoforms on platelet aggregation, thrombosis, and cerebral infarction. In addition, cobicistat significantly attenuated thrombosis in a ponatinib-induced zebrafish trunk model. Overall, the elabela-apelin/APJ axis mediated platelet aggregation and thrombosis via the PANX1-P2X7 signaling pathway in vitro and in vivo. Blocking the APJ receptor with cobicistat/Schisandrin A or inhibiting PANX1 with spironolactone may provide novel therapeutic strategies against thrombosis.
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Affiliation(s)
- Zhe Chen
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Xuling Luo
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Meiqing Liu
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Jinyong Jiang
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Yao Li
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Zhen Huang
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Lingzhi Wang
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Jiangang Cao
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Lu He
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Shifang Huang
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Haoliang Hu
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China.,Changde Research Center for Artificial Intelligence and Biomedicine, College of Life and Environmental Sciences, Hunan University of Arts and Science, Changde, Hunan, China
| | - Lanfang Li
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
| | - Linxi Chen
- Hunan Provincial Key Laboratory of tumor microenvironment responsive drug research, Hengyang Medical School, Institute of Pharmacy and Pharmacology, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China
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11
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Xu D, Zhuang L, Gao S, Ma H, Cheng J, Liu J, Liu D, Fu S, Hu G. Orally Administered Ginkgolide C Attenuates DSS-Induced Colitis by Maintaining Gut Barrier Integrity, Inhibiting Inflammatory Responses, and Regulating Intestinal Flora. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:14718-14731. [PMID: 36375817 DOI: 10.1021/acs.jafc.2c06177] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Ulcerative colitis (UC), one of the foremost common forms of inflammatory bowel disease, poses a serious threat to human health. Currently, safe and effective treatments are not available. This study investigated the protective effect of ginkgolide C (GC), a terpene lactone extracted from Ginkgo biloba leaves, on UC and its underlying mechanism. The results showed that GC remarkably mitigated the severity of DSS-induced colitis in mice, as demonstrated by decreased body weight loss, reduced disease activity index, mitigated tissue damage, and increased colon length. Furthermore, GC inhibited DSS-induced hyperactivation of inflammation-related signaling pathways (NF-κB and MAPK) to reduce the production of inflammatory mediators, thereby mitigating the inflammatory response in mice. GC administration also restored gut barrier function by elevating the number of goblet cells and boosting the levels of tight junction-related proteins (claudin-3, occludin, and ZO-1). In addition, GC rebalanced the intestinal flora of DSS-treated mice by increasing the diversity of the flora, elevating the abundance of beneficial bacteria, such as Lactobacillus and Allobaculum, and decreasing the abundance of harmful bacteria, such as Bacteroides, Oscillospira, Ruminococcus, and Turicibacter. Taken together, these results suggest that GC administration effectively alleviates DSS-induced colitis by inhibiting the inflammatory response, maintaining mucosal barrier integrity, and regulating intestinal flora. This study may provide a scientific basis for the rational use of GC in preventing colitis and other related diseases.
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Affiliation(s)
- Dianwen Xu
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
| | - Lu Zhuang
- Faculty of Pediatrics, The Chinese PLA General Hospital, Beijing 100853, China
- Institute of Pediatrics, The Seventh Medical Center of PLA General Hospital, Beijing 100000, China
- National Engineering Laboratory for Birth Defects Prevention and Control of Key Technology, Beijing 100700, China
- Beijing Key Laboratory of Pediatric Organ Failure, Beijing 100700, China
| | - Shan Gao
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
| | - He Ma
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
| | - Ji Cheng
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
| | - Juxiong Liu
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
| | - Dianfeng Liu
- College of Animal Science, Jilin University, Changchun 130062, China
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
| | - Guiqiu Hu
- College of Veterinary Medicine, Jilin University, Changchun, 130062 Jilin, China
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12
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Schisandrin A from Schisandra chinensis Attenuates Ferroptosis and NLRP3 Inflammasome-Mediated Pyroptosis in Diabetic Nephropathy through Mitochondrial Damage by AdipoR1 Ubiquitination. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:5411462. [PMID: 35996380 PMCID: PMC9391610 DOI: 10.1155/2022/5411462] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Accepted: 07/16/2022] [Indexed: 11/18/2022]
Abstract
Schisandra chinensis, as a Chinese functional food, is rich in unsaturated fatty acids, minerals, vitamins, and proteins. Hence, this study was intended to elucidate the effects and biological mechanism of Schisandrin A from Schisandra chinensis in DN. C57BL/6 mice were fed with a high-fat diet and then injected with streptozotocin (STZ). Human renal glomerular endothelial cells were stimulated with 20 mmol/L d-glucose for DN model. Schisandrin A presented acute kidney injury in mice of DN. Schisandrin A reduced oxidative stress and inflammation in model of DN. Schisandrin A reduced high glucose-induced ferroptosis and reactive oxygen species (ROS-)-mediated pyroptosis by mitochondrial damage in model of DN. Schisandrin A directly targeted AdipoR1 protein and reduced LPS+ATP-induced AdipoR1 ubiquitination in vitro model. Schisandrin A activated AdipoR1/AMPK signaling pathway and suppressed TXNIP/NLRP3 signaling pathway in vivo and in vitro model of DN. Conclusively, our study revealed that Schisandrin A from Schisandra chinensis attenuates ferroptosis and NLRP3 inflammasome-mediated pyroptosis in DN by AdipoR1/AMPK-ROS/mitochondrial damage. Schisandrin A is a possible therapeutic option for DN or other diabetes.
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13
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Li Y, Liu J, Cui Y, Cao Y, Xu P, Kan X, Guo W, Fu S. Sodium butyrate attenuates bovine mammary epithelial cell injury by inhibiting the formation of neutrophil extracellular traps. Int Immunopharmacol 2022; 110:109009. [PMID: 35816944 DOI: 10.1016/j.intimp.2022.109009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Revised: 06/13/2022] [Accepted: 06/25/2022] [Indexed: 11/15/2022]
Abstract
Neutrophil extracellular traps (NETs) are an important means by which the body fights against exogenous bacteria. However, studies have shown that excessive NETs release can damage other cells. Accumulating evidence has shown that butyric acid can alleviate the inflammatory response of cells. However, the effect of butyric acid on Staphylococcus aureus-induced NETs formation and its underlying mechanism are still unclear. In this study, western blotting, immunofluorescence and CCK-8 assays were used to examine the effect of NETs formation by sodium butyrate (NaB). The results showed that NaB suppressed the release of S. aureus-induced NETs formation, as indicated by decreases in the levels of DNA, histones, myeloperoxidase, and neutrophil elastase. S. aureus can induce autophagy, and autophagy plays a key role in the formation of NETs. Our data showed that NaB activated mammalian target of rapamycin (mTOR) and the kinases protein kinase B (AKT) and unc-51 like kinase 1 (ULK1) at Ser757 and inhibited AMP-activated protein kinase (AMPK). To explore whether NaB inhibited the formation of NETs by inhibiting autophagy, we added 3-methyladenine (autophagy inhibitor) (3-MA, 5 mM) to bovine neutrophils, and the results showed that 3-MA significantly inhibited NETs release. Furthermore, we found that NETs and their component histones exhibited significantly increased the cytotoxic effects on bovine mammary epithelial cells (BMECs), indicating that NETs and their component histones play a key role in BMEC damage. In conclusion, NaB can reduce the excessive formation of NETs by inhibiting autophagy, thus reducing the damaging effect of NETs on BMECs.
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Affiliation(s)
- Yuhang Li
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Juxiong Liu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Yueyao Cui
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Yu Cao
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Ping Xu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Xingchi Kan
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Wenjin Guo
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun 130062, China.
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14
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Zhao N, Yang Y, Xu H, Li L, Hu Y, Liu E, Cui J. Betaine protects bovine mammary epithelial cells against LPS-induced inflammatory response and oxidative damage via modulating NF-κB and Nrf2 signalling pathway. ITALIAN JOURNAL OF ANIMAL SCIENCE 2022. [DOI: 10.1080/1828051x.2022.2070035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Nannan Zhao
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, People’s Republic of China
| | - Yuhang Yang
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, People’s Republic of China
| | - Haixu Xu
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, People’s Republic of China
| | - Lulu Li
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, People’s Republic of China
| | - Yun Hu
- College of Animal Science and Technology, Yangzhou University, Yangzhou, People’s Republic of China
| | - Enqi Liu
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, People’s Republic of China
| | - Jue Cui
- School of Food and Biology Engineering, Xuzhou University of Technology, Xuzhou, People’s Republic of China
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15
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Fu K, Zhou H, Wang C, Gong L, Ma C, Zhang Y, Li Y. A review: Pharmacology and pharmacokinetics of Schisandrin A. Phytother Res 2022; 36:2375-2393. [DOI: 10.1002/ptr.7456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 02/20/2022] [Accepted: 03/18/2022] [Indexed: 12/12/2022]
Affiliation(s)
- Ke Fu
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
| | - Honglin Zhou
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
| | - Cheng Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
| | - Lihong Gong
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
| | - Cheng Ma
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
| | - Yafang Zhang
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
| | - Yunxia Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, Key Laboratory of Standardization for Chinese Herbal Medicine, Ministry of Education, School of Pharmacy Chengdu University of Traditional Chinese Medicine Chengdu China
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Ma Q, Wei Y, Meng Z, Chen Y, Zhao G. Effects of Water Extract from Artemisia argyi Leaves on LPS-Induced Mastitis in Mice. Animals (Basel) 2022; 12:ani12070907. [PMID: 35405895 PMCID: PMC8997000 DOI: 10.3390/ani12070907] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 03/31/2022] [Accepted: 03/31/2022] [Indexed: 12/04/2022] Open
Abstract
Simple Summary Mastitis is a common disease in dairy cows. On the one hand, it will reduce milk yield and milk quality of dairy cows, thus increasing the cost of animal husbandry, and, on the other hand, it will influence the health of infected animals and even human beings. Generally speaking, because mastitis is caused by pathogenic microorganisms, antibiotic treatment is commonly used. However, antibiotic resistance of microorganisms caused by wrongful use of antibiotics and antibiotic residues after treatment has become an urgent problem to be solved. Chinese herbal medicines are pure natural substances, and many of them have antibacterial, anti-inflammatory, or immune-enhancing effects. In this experiment, Artemisia argyi (A. argyi) was selected as the research object to construct the cell model of cow mastitis. Studies have found that A. argyi extract can play a positive role in the regulation of inflammation, which is rich in organic acids and flavonoids. Therefore, A. argyi extract may be a potential treatment for mastitis. Abstract In the context of the unsatisfactory therapeutic effect of antibiotics, the natural products of plants have become a research hotspot. Artemisia argyi (A. argyi) is known as a traditional medicine in China, and its extracts have been reported to have a variety of active functions, including anti-inflammatory. Therefore, after establishing the mouse mastitis model by lipopolysaccharide (LPS), the effects of A. argyi leaves extract (ALE) were evaluated by pathological morphology of the mammary gland tissue, gene expression, and serum oxidation index. Studies have shown that ALE has a restorative effect on LPS-induced mammary gland lesions and significantly down-regulated the rise of myeloperoxidase (MPO) induced by LPS stimulation. In addition, ALE played a positive role in LPS-induced oxidative imbalance by restoring the activities of glutathione peroxidase (GSH-PX) and superoxide dismutase (SOD) and preventing the increase in nitric oxide (NO) concentration caused by the over-activation of total nitric oxide synthase (T-NOS). Further analysis of gene expression in the mammary gland showed that ALE significantly down-regulated LPS-induced up-regulation of inflammatory factors IL6, TNFα, and IL1β. ALE also regulated the expression of MyD88, a key gene for toll-like receptors (TLRs) signaling, which, in turn, regulated TLR2 and TLR4. The effect of ALE on iNOS expression was similar to the effect of T-NOS activity and NO content, which also played a positive role. The IκB gene is closely related to the NF-κB signaling pathway, and ALE was found to significantly alleviate the LPS-induced increase in IκB. All of these results indicated that ALE may be considered a potential active substance for mastitis.
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Yang K, Qiu J, Huang Z, Yu Z, Wang W, Hu H, You Y. A comprehensive review of ethnopharmacology, phytochemistry, pharmacology, and pharmacokinetics of Schisandra chinensis (Turcz.) Baill. and Schisandra sphenanthera Rehd. et Wils. JOURNAL OF ETHNOPHARMACOLOGY 2022; 284:114759. [PMID: 34678416 DOI: 10.1016/j.jep.2021.114759] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Revised: 10/15/2021] [Accepted: 10/18/2021] [Indexed: 06/13/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Schisandra chinensis (called bei-wuweizi in Chinese, S. chinensis) and Schisandra sphenanthera (called nan-wuweizi in Chinese, S. sphenanthera) are two highly similar plants in the Magnoliaceae family. Their dried ripe fruits are commonly used as traditional Chinese medicine in the treatment of coughs, palpitation, spermatorrhea, and insomnia. They also are traditionally used as tonics in Russia, Japan, and Korea. AIM OF THE REVIEW S. chinensis and S. sphenanthera are similar in appearance, traditional applications, ingredient compositions, and therapeutic effects. This review, therefore, aims to provide a systematic insight into the botanical background, ethnopharmacology, phytochemistry, pharmacology, pharmacokinetics, quality control, and toxicology of S. chinensis and S. sphenanthera, and to explore and present the similarities and differences between S. chinensis and S. sphenanthera. MATERIALS AND METHODS A comprehensive literature search regarding S. chinensis and S. sphenanthera was collected by using electronic databases including PubMed, SciFinder, Science Direct, Web of Science, CNKI, and the online ethnobotanical database. RESULTS In the 2020 Edition of Chinese Pharmacopoeia (ChP), there were 100 prescriptions containing S. chinensis, while only 11 contained S. sphenanthera. Totally, 306 and 238 compounds have been isolated and identified from S. chinensis and S. sphenanthera, respectively. Among these compounds, lignans, triterpenoids, essential oils, phenolic acid, flavonoids, phytosterols are the major composition. Through investigation of pharmacological activities, S. chinensis and S. sphenanthera have similar therapeutic effects including hepatoprotection, neuroprotection, cardioprotection, anticancer, antioxidation, anti-inflammation, and hypoglycemic effect. Besides, S. chinensis turns out to have more effects including reproductive regulation and immunomodulatory, antimicrobial, antitussive and antiasthmatic, anti-fatigue, antiarthritic, and bone remodeling effects. Both S. chinensis and S. sphenanthera have inhibitory effects on CYP3A and P-gp, which can mediate metabolism or efflux of substrates, and therefore interact with many drugs. CONCLUSIONS S. chinensis and S. sphenanthera have great similarities. Dibenzocyclooctadiene lignans are regarded to contribute to most of the bioactivities. Schisandrin A-C, schisandrol A-B, and schisantherin A, existing in both S. chinensis and S. sphenanthera but differing in the amount, are the main active components, which may contribute to the similarities and differences. Study corresponding to the traditional use is needed to reveal the deep connotation of the use of S. chinensis and S. sphenanthera as traditional Chinese medicine. In addition, a joint study of S. chinensis and S. sphenanthera can better show the difference between them, which can provide a reference for clinical application. It is worth mentioning that the inhibition of S. chinensis and S. sphenanthera on CYP3A and P-gp may lead to undesirable drug-drug interactions.
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Affiliation(s)
- Ke Yang
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
| | - Jing Qiu
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
| | - Zecheng Huang
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
| | - Ziwei Yu
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
| | - Wenjun Wang
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
| | - Huiling Hu
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
| | - Yu You
- State Key Laboratory of Characteristic Chinese Medicine Resources in Southwest China,College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Wenjiang, Chengdu, 611137, China.
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18
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Liu S, Guo W, Jia Y, Ye B, Liu S, Fu S, Liu J, Hu G. Menthol Targeting AMPK Alleviates the Inflammatory Response of Bovine Mammary Epithelial Cells and Restores the Synthesis of Milk Fat and Milk Protein. Front Immunol 2021; 12:782989. [PMID: 35003099 PMCID: PMC8727745 DOI: 10.3389/fimmu.2021.782989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Accepted: 12/06/2021] [Indexed: 11/23/2022] Open
Abstract
Mastitis is one of the most serious diseases that causes losses in the dairy industry, seriously impairing milk production and milk quality, and even affecting human health. Menthol is a cyclic monoterpene compound obtained from the stem and leaves of peppermint, which has a variety of biological activities, including anti-inflammatory and antioxidant activity. The purpose of this study was to investigate the preventive effect of menthol on the lipopolysaccharide-induced inflammatory response in primary bovine mammary gland epithelial cells (BMECs) and its anti-inflammatory mechanism. First, BMECs were isolated and amplified from the udders of Holstein cows by enzymatic hydrolysis. BMECs were treated with menthol (10, 50, 100, 200 μM) for 1h, followed by lipopolysaccharide (5μg/ml) for 12 h. Lipopolysaccharide treatment upregulated the protein levels of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (INOS) and the mRNA abundance of tumor necrosis factor α (TNF-α), interleukin-6 (IL-6), and interleukin-1β (IL-1β), while menthol was able to inhibit this effect. The inhibitory effect of menthol on proinflammatory factors was significantly reduced when autophagy was blocked using 3-Methyladenine (5μg/ml), an inhibitor of autophagy. Furthermore, lipopolysaccharide treatment reduced the expression levels of milk lipids and milk proteins, which were inhibited by menthol. In addition, menthol (200 μM) treatment was able to significantly upregulate the expression level of autophagy-related protein LC3B, downregulate the expression level of P62, promote the expression abundance of autophagy-related gene mRNA, and enhance significantly enhance autophagic flux. Interestingly, treatment of BMECs with menthol (200 μM) promoted the phosphorylation of AMP-activated protein kinase (AMPK) and unc-51 like kinase 1 (ULK1) and increased the nuclear localization of nuclear factor-E2 associated factor 2 (Nrf-2). When the AMPK pathway was blocked using compound C (10μg/ml), an inhibitor of AMPK, autophagy was significantly inhibited. Autophagy levels were significantly decreased after blocking the Nrf-2 pathway using ML385 (5μg/ml), an inhibitor of Nrf-2. Overall, the data suggest that menthol activates the AMPK-ULK1 pathway to initiate the onset of autophagy and maintains the level of autophagy through the AMPK-Nrf-2 pathway. In conclusion, the findings suggest that menthol may alleviate the inflammatory response in BMECs via the AMPK/ULK1/Nrf-2/autophagy pathway.
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Affiliation(s)
- Songqi Liu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Wenjin Guo
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yuxi Jia
- Department of Orthopedics, The Second Hospital of Jilin University, Changchun, China
- Application Demonstration Center of Precision Medicine Molecular Diagnosis, The Second Hospital of Jilin University, Changchun, China
| | - Bojian Ye
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Shu Liu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Shoupeng Fu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Juxiong Liu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Guiqiu Hu
- College of Veterinary Medicine, Jilin University, Changchun, China
- *Correspondence: Guiqiu Hu,
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Gao L, Li T, Li S, Song Z, Chang Y, Yuan L. Schisandrin A protects against isoproterenol‑induced chronic heart failure via miR‑155. Mol Med Rep 2021; 25:24. [PMID: 34812475 PMCID: PMC8630813 DOI: 10.3892/mmr.2021.12540] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 09/27/2021] [Indexed: 12/29/2022] Open
Abstract
Schisandrin A (Sch A) has a protective effect on cardiomyocytes. Circulating miR-155 levels are related to chronic heart failure (CHF). The present study aimed to clarify the role and the molecular mechanism of Sch A in CHF. C57BL/6JGpt mice were used for an isoproterenol (ISO)-induced CHF model to collect heart samples. Echocardiography was employed to detect heartbeat indicators. The degree of myocardial hypertrophy was evaluated based on the measurement of heart weight (HW), body weight (BW) and tibia length (TL) and the observation using hematoxylin-eosin staining. Sprague-Dawley rats were purchased for the separation of neonatal rat ventricular myocytes (NRVMs), which were treated with ISO for 24 h. Transfection regulated the level of miR-155. The viability of NRVMs was detected via MTT assay. The mRNA and protein levels were measured via reverse transcription-quantitative PCR and western blotting and immunofluorescence was used to detect the content of α-smooth muscle actin (α-SMA). Treatment with ISO resulted in rising left ventricular posterior wall thickness, intra-ventricular septum diastole, left ventricular end diastolic diameter, left ventricular end systolic diameter, HW/BW, HW/TL and falling ejection fraction and fractional shortening, the trend of which could be reversed by Sch A. Sch A ameliorated myocardial hypertrophy in CHF mice. In addition, Sch A inhibited ISO-induced upregulated expressions of atrial natriuretic peptide, B-type natriuretic peptide, B-myosin heavy chain and miR-155 in myocardial tissue. Based on the results in vitro, Sch A had no significant effect on the viability of NRVMs when its concentration was <24 µmol/l. Sch A inhibited the levels of miR-155, α-SMA and the phosphorylation levels of AKT and cyclic AMP response-element binding protein (CREB) in ISO-induced NRVMs, which was reversed by the upregulation of miR-155. Schisandrin A mediated the AKT/CREB signaling pathway to prevent CHF by regulating the expression of miR-155, which may shed light on a possible therapeutic target for CHF.
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Affiliation(s)
- Lijing Gao
- Medical College, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Ting Li
- Medical College, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Shufen Li
- Medical College, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Zhuohui Song
- Medical College, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Yongli Chang
- Medical College, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
| | - Li Yuan
- Medical College, Changzhi Medical College, Changzhi, Shanxi 046000, P.R. China
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Zhou Y, Men L, Sun Y, Wei M, Fan X. Pharmacodynamic effects and molecular mechanisms of lignans from Schisandra chinensis Turcz. (Baill.), a current review. Eur J Pharmacol 2020; 892:173796. [PMID: 33345853 DOI: 10.1016/j.ejphar.2020.173796] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Revised: 12/08/2020] [Accepted: 12/11/2020] [Indexed: 02/06/2023]
Abstract
Fruit of Schisandra chinensis Turcz. (Baill.) (S. chinensis) is a traditional herbal medicine widely used in China, Korea, and many other east Asian countries. At present, S. chinensis commonly forms Chinese medicinal formulae with other herbal medicines to treat liver disease and neurological disease in clinical. Modern researches indicated that lignans were the main active ingredients of S. chinensis with high content and novel dibenzocyclooctadiene skeletal structure, exhibited considerable antioxidant, anti-inflammatory, and neuroprotective properties. Additionally, some of these lignans also showed certain potentials in anti-cancer, anti-fibrosis, and other effects. In the current review, we summarize literature reported lignans from S. chinensis in the past five years, and highlight the molecular mechanisms of lignans in exerting their biological functions. Also, we point out some deficiencies of existing researches and discuss the future direction of lignans study.
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Affiliation(s)
- Yuan Zhou
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
| | - Lihui Men
- School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China
| | - Yunxia Sun
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China
| | - Mengying Wei
- Natural Medicine Institute of Zhejiang YangShengTang Co., Hangzhou, 310000, China
| | - Xiang Fan
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, 310053, China.
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21
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Ni S, Qian Z, Yuan Y, Li D, Zhong Z, Ghorbani F, Zhang X, Zhang F, Zhang Z, Liu Z, Yu B. Schisandrin A restrains osteoclastogenesis by inhibiting reactive oxygen species and activating Nrf2 signalling. Cell Prolif 2020; 53:e12882. [PMID: 32871020 PMCID: PMC7574870 DOI: 10.1111/cpr.12882] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 06/23/2020] [Accepted: 07/06/2020] [Indexed: 12/13/2022] Open
Abstract
Objectives Intracellular reactive oxygen species (ROS) induced by receptor activator of NF‐kB ligand (RANKL) has been proven to be a critical factor in the development of osteoclasts. This study aimed to prove that schisandrin A (Sch), a novel anti‐oxidant compound, is able to suppress osteoclastogenesis and prevent bone loss in ovariectomized (OVX) mice by suppressing ROS via nuclear factor erythroid 2‐related factor (Nrf2). Material and Methods Micro‐CT was used to detect bone formation. The effects of Sch on receptor activator of nuclear factor‐κB (NF‐κB) ligand (RANKL)‐induced reactive oxygen species (ROS) were measured by dihydroethidium (DHE) staining in vivo and 2',7'‐dichlorodihydrofluorescein diacetate (DCFH‐DA) staining in vitro. Immunofluorescence staining was used to detect the expression of Nrf2 in vivo. siRNA was used to evaluate the effect of Nrf2 in osteoclastogenesis. Results Sch suppresses RANKL‐induced ROS production by regulating nuclear factor erythroid 2‐related factor (Nrf2) in vitro and vivo. Mechanistically, Sch enhances the expression of Nrf2 by regulating the degradation of Nrf2. Further, Sch suppresses phosphorylation of P65 and its nuclear translocation, as well as the degradation of IκBα. Collectively, our findings reveal that Sch protects against OVX‐induced bone loss by suppressing ROS via Nrf2. Conclusions Our results showed the potential of anti‐oxidant compound schisandrin A in the treatment of osteoporosis, highlighting Nrf2 as a novel promising target in osteoclast‐related disease.
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Affiliation(s)
- Shuo Ni
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Zhi Qian
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Yin Yuan
- State Key Laboratory for Diagnosis and Treatment of Infectious Diseases, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China
| | - Dejian Li
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Zeyuan Zhong
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Farnaz Ghorbani
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Xu Zhang
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Fangxue Zhang
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
| | - Zhenhua Zhang
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Zichen Liu
- School of Materials Science and Engineering, University of Shanghai for Science and Technology, Shanghai, China
| | - Baoqing Yu
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai, China
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