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Xu T, Zhang B, Fang D. The effect of resistance training on patients with knee osteoarthritis: a systematic review and meta-analysis. Res Sports Med 2024:1-19. [PMID: 38980284 DOI: 10.1080/15438627.2024.2377087] [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: 06/15/2023] [Accepted: 07/02/2024] [Indexed: 07/10/2024]
Abstract
The objective of this study is to investigate the beneficial effects of resistance training (RT) on individuals suffering from knee osteoarthritis (KOA). In order to gather relevant studies from the beginning of various databases until January 2023, a comprehensive search was conducted on PubMed, Embase, Scopus, Web of Science, and The Cochrane Library. Additionally, manual searches were performed on the reference lists. The association between RT and KOA was analysed using a random-effects model. The results indicated that patients with KOA who underwent RT experienced a significant reduction in the WOMAC (Western Ontario and McMaster Universities Osteoarthritis) Pain index (WMD = -2.441; 95% CI = -3.610 to -1.273; p < 0.01), the WOMAC Stiffness index (WMD = -1.018; 95% CI = -1.744 to -0.293; p < 0.01), the WOMAC Function index (WMD = -7.208; 95% CI = -10.412 to -4.004; p < 0.01), and the VAS (Visual Analogue Scale) index (WMD = -5.721; 95% CI = -9.320 to -2.121; p < 0.01). These improvements were observed when compared to the control group. However, no significant difference was found in the 6-MWT (6-Minute Walk Test) index between the two groups (WMD = 2.659; 95% CI= -16.741 to 22.058; p = 0.788). Consequently, RT has the potential to positively enhance pain, stiffness, and function in patients with KOA, while the 6-MWT index may not exhibit significant improvement.
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Affiliation(s)
- Tingrui Xu
- College of Physical Education, Jiangsu Normal University, Xuzhou, China
| | - Borui Zhang
- College of Physical Education, Jiangsu Normal University, Xuzhou, China
| | - Dongmei Fang
- College of Physical Education, Jiangsu Normal University, Xuzhou, China
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2
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de Klerk DJ, de Keijzer MJ, Dias LM, Heemskerk J, de Haan LR, Kleijn TG, Franchi LP, Heger M. Strategies for Improving Photodynamic Therapy Through Pharmacological Modulation of the Immediate Early Stress Response. Methods Mol Biol 2022; 2451:405-480. [PMID: 35505025 DOI: 10.1007/978-1-0716-2099-1_20] [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] [Indexed: 06/14/2023]
Abstract
Photodynamic therapy (PDT) is a minimally to noninvasive treatment modality that has emerged as a promising alternative to conventional cancer treatments. PDT induces hyperoxidative stress and disrupts cellular homeostasis in photosensitized cancer cells, resulting in cell death and ultimately removal of the tumor. However, various survival pathways can be activated in sublethally afflicted cancer cells following PDT. The acute stress response is one of the known survival pathways in PDT, which is activated by reactive oxygen species and signals via ASK-1 (directly) or via TNFR (indirectly). The acute stress response can activate various other survival pathways that may entail antioxidant, pro-inflammatory, angiogenic, and proteotoxic stress responses that culminate in the cancer cell's ability to cope with redox stress and oxidative damage. This review provides an overview of the immediate early stress response in the context of PDT, mechanisms of activation by PDT, and molecular intervention strategies aimed at inhibiting survival signaling and improving PDT outcome.
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Affiliation(s)
- Daniel J de Klerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Mark J de Keijzer
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
| | - Lionel M Dias
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Faculdade de Ciências da Saúde (FCS-UBI), Universidade da Beira Interior, Covilhã, Portugal
| | - Jordi Heemskerk
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
| | - Lianne R de Haan
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Tony G Kleijn
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands
| | - Leonardo P Franchi
- Departamento de Bioquímica e Biologia Molecular, Instituto de Ciências Biológicas (ICB) 2, Universidade Federal de Goiás (UFG), Goiânia, GO, Brazil
- Faculty of Philosophy, Department of Chemistry, Center of Nanotechnology and Tissue Engineering-Photobiology and Photomedicine Research Group, Sciences, and Letters of Ribeirão Preto, University of São Paulo, São Paulo, Brazil
| | - Michal Heger
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, Department of Pharmaceutics, College of Medicine, Jiaxing University, Jiaxing, Zhejiang, People's Republic of China.
- Laboratory of Experimental Oncology, Department of Pathology, Erasmus MC, Rotterdam, The Netherlands.
- Department of Pharmaceutics, Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands.
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3
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Yong Y, Li J, Gong D, Yu T, Wu L, Hu C, Liu X, Yu Z, Ma X, Gooneratne R, El-Aty AMA, Chen J, Ju X. ERK1/2 mitogen-activated protein kinase mediates downregulation of intestinal tight junction proteins in heat stress-induced IBD model in pig. J Therm Biol 2021; 101:103103. [PMID: 34879918 DOI: 10.1016/j.jtherbio.2021.103103] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2021] [Revised: 08/25/2021] [Accepted: 09/15/2021] [Indexed: 01/13/2023]
Abstract
In many mammalian species, including pigs, heat stress (HS) detrimentally leads to epithelium damage and increases intestinal permeability. However, the underlying molecular mechanisms are not thoroughly investigated yet. This study aimed to examine the RIP1/RIP3-ERK1/2 signaling pathway that regulates the expression of tight junction proteins in HS-treated pigs. In in vitro cultured intestinal porcine epithelial cells (IPEC-J2), HS induced the expression of tight junction proteins, ZO-1, claudin-1, and claudin-4, that are regulated by the ERK1/2-MAPK signaling pathway. Further, high expression of HSP70 in IPEC-J2 cells induced a significant decrease in receptor-interacting protein 1/3 (RIP1/3), phosphorylated ERK, and tight junction protein claudin-1 (P < 0.05). Necrostatin-1 (A selective inhibitor of RIPK1) suppressed the upregulation of phosphorylated ERK1/2 induced by HS, indicating that the RIP1/RIP3 regulates ERK1/2 phosphorylation in IPEC-J2 under heat stress. In addition, HS significantly damaged the intestinal morphology characterized by reduction of villus length and crypt depth in in vivo porcine model. Moreover, the expression of tight junction, ZO-1, and claudin-4 were downregulated, whereas phosphorylated p38 and ERK1/2 were upregulated in the duodenum of heat-stressed pigs. Interestingly, a decrease in ZO-1 and claudin-1 was observed in the colon, where phosphorylated ERK1/2 was similar to that in the duodenum. Our results demonstrate that RIP1/RIP3-ERK1/2 signaling pathway regulates the expression of tight junction proteins in HS-pigs. This finding further advances the intestinal barrier function's underlying mechanisms associated with signaling regulation.
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Affiliation(s)
- Yanhong Yong
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518018, China; Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Junyu Li
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518018, China; Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Dongliang Gong
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Tianyue Yu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Lianyun Wu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Canying Hu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Xiaoxi Liu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Zhichao Yu
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Xingbin Ma
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China
| | - Ravi Gooneratne
- Faculty of Agriculture and Life Sciences, Lincoln University, Lincoln, 7647, New Zealand
| | - A M Abd El-Aty
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, Jinan, 250353, China; Department of Pharmacology, Faculty of Veterinary Medicine, Cairo University, Giza, 12211, Egypt; Department of Medical Pharmacology, Faculty of Medicine, Atatürk University, Erzurum, Turkey
| | - Jinjun Chen
- Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China.
| | - Xianghong Ju
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518018, China; Department of Veterinary Medicine, Guangdong Ocean University, Zhanjiang, 524088, China.
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4
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Ganbaatar B, Fukuda D, Shinohara M, Yagi S, Kusunose K, Yamada H, Soeki T, Hirata KI, Sata M. Empagliflozin ameliorates endothelial dysfunction and suppresses atherogenesis in diabetic apolipoprotein E-deficient mice. Eur J Pharmacol 2020; 875:173040. [PMID: 32114052 DOI: 10.1016/j.ejphar.2020.173040] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/25/2020] [Accepted: 02/25/2020] [Indexed: 12/15/2022]
Abstract
Recent studies reported cardioprotective effects of sodium glucose co-transporter 2 (SGLT2) inhibitors; however, the underlying mechanisms are still obscure. Here, we investigated whether empagliflozin attenuates atherogenesis and endothelial dysfunction in diabetic apolipoprotein E-deficient (ApoE-/-) mice. Male streptozotocin (STZ) - induced diabetic ApoE-/- mice were treated with empagliflozin for 12 or 8 weeks. Empagliflozin lowered blood glucose (P < 0.001) and lipid levels in diabetic ApoE-/- mice. Empagliflozin treatment for 12 weeks significantly decreased atherosclerotic lesion size in the aortic arch (P < 0.01) along with reduction of lipid deposition (P < 0.05), macrophage accumulation (P < 0.001), and inflammatory molecule expression in plaques compared with the untreated group. Empagliflozin treatment for 8 weeks significantly ameliorated diabetes-induced endothelial dysfunction as determined by the vascular response to acetylcholine (P < 0.001). Empagliflozin reduced RNA expression of a macrophage marker, CD68, and inflammatory molecules such as MCP-1 (P < 0.05) and NADPH oxidase subunits in the aorta compared with the untreated group. Empagliflozin also reduced plasma levels of vasoconstrictive eicosanoids, prostaglandin E2 and thromboxane B2 (P < 0.001), which were elevated in diabetic condition. Furthermore, empagliflozin attenuated RNA expression of inflammatory molecules in perivascular adipose tissue (PVAT), suggesting the reduction of inflammation in PVAT. In in vitro studies, methylglyoxal (MGO), a precursor of AGEs, significantly increased the expression of inflammatory molecules such as MCP-1 and TNF-α in a murine macrophage cell line, RAW264.7. Our results indicated that empagliflozin attenuated endothelial dysfunction and atherogenesis in diabetic ApoE-/- mice. Reduction of vasoconstrictive eicosanoids and inflammation in the vasculature and PVAT may have a role as underlying mechanisms at least partially.
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Affiliation(s)
- Byambasuren Ganbaatar
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan
| | - Daiju Fukuda
- Department of Cardio-Diabetes Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan.
| | - Masakazu Shinohara
- The Integrated Center for Mass Spectrometry, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan; Division of Epidemiology, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Shusuke Yagi
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan
| | - Kenya Kusunose
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan
| | - Hirotsugu Yamada
- Department of Community Medicine for Cardiology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan
| | - Takeshi Soeki
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan
| | - Ken-Ichi Hirata
- Division of Cardiovascular Medicine, Kobe University Graduate School of Medicine, Kobe, 650-0017, Japan
| | - Masataka Sata
- Department of Cardiovascular Medicine, Tokushima University Graduate School of Biomedical Sciences, Tokushima, 770-8503, Japan
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5
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Wang Z, Wang Q, Wang X, Zhu L, Chen J, Zhang B, Chen Y, Yuan Z. Gut microbial dysbiosis is associated with development and progression of radiation enteritis during pelvic radiotherapy. J Cell Mol Med 2019; 23:3747-3756. [PMID: 30908851 PMCID: PMC6484301 DOI: 10.1111/jcmm.14289] [Citation(s) in RCA: 88] [Impact Index Per Article: 17.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2018] [Revised: 02/13/2019] [Accepted: 03/04/2019] [Indexed: 12/20/2022] Open
Abstract
Radiation enteritis (RE) is the most common complication of radiotherapy for pelvic irradiation receivers. Herein we investigated the alterations in gut microbial profiles and their association with enteritis in patients undergoing pelvic radiotherapy. Faecal samples were collected from 18 cervical cancer patients during radiotherapy. Microbiota profiles were characterized based on 16S rRNA sequencing using the Illumina HiSeq platform. Epithelial inflammatory response was evaluated using bacterial‐epithelial co‐cultures. Dysbiosis was observed among patients with RE, which was characterized by significantly reduced α‐diversity but increased β‐diversity, relative higher abundance of Proteobacteria and Gammaproteobacteria and lower abundance of Bacteroides.Coprococcus was clearly enriched prior to radiotherapy in patients who later developed RE. Metastat analysis further revealed unique grade‐related microbial features, such as more abundant Virgibacillus and Alcanivorax in patients with mild enteritis. Additionally, using bacterial‐epithelial co‐cultures, RE patient‐derived microbiota induced epithelial inflammation and barrier dysfunction, enhanced TNF‐α and IL‐1β expression compared with control microbiota. Taken together, we define the overall picture of gut microbiota in patients with RE. Our results suggest that dysbiosis of gut microbiota may contribute to development and progression of RE. Gut microbiota can offer a set of biomarkers for prediction, disease activity evaluation and treatment selection in RE.
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Affiliation(s)
- Zhongqiu Wang
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Qingxin Wang
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.,Department of Biomedical Engineering, Tianjin University, Tianjin, China
| | - Xia Wang
- Department of Gastrointestinal Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Li Zhu
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Jie Chen
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Bailin Zhang
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
| | - Ye Chen
- Department of Gastroenterology, Guangdong Provincial Key Laboratory of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Zhiyong Yuan
- Department of Radiation Oncology, Tianjin Medical University Cancer Institute and Hospital, National Clinical Research Center for Cancer, Tianjin's Clinical Research Center for Cancer, Key Laboratory of Cancer Prevention and Therapy, Tianjin, China
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6
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Liu Z, Li C, Chen S, Lin H, Zhao H, Liu M, Weng J, Liu T, Li X, Lei C, Li C, Jiang Y, Moyer MP, Yin C, Zhou X. MicroRNA-21 increases the expression level of occludin through regulating ROCK1 in prevention of intestinal barrier dysfunction. J Cell Biochem 2018; 120:4545-4554. [PMID: 30302792 DOI: 10.1002/jcb.27742] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Accepted: 08/30/2018] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The aim of this study is to investigate the role of molecular mechanism of microRNA (miR)-21 on tight junction (TJ)-proteins and its protective effects on the intestinal barrier. METHODS TJ proteins and target genes expression were analyzed in miR-21 inhibition and overexpression NCM460 cell lines. To further verify the role of miR-21, the mmu-miR-21 intestinal epithelial conditional knockout (IKO) mice model was established. MiR-21 expression was detected in clinical specimens of acute stercoral obstruction patients. RESULTS Rho-associated protein kinase 1 (ROCK1) were identified as target genes of miR-21. There is a negative correlation between miR-21 expression level and TJ proteins levels. TJ protein and ROCK1 were significantly decreased in miR-21 IKO mice, which presented intestinal inflammation response and intestinal barrier dysfunction (both P < 0.05). Determination of clinical samples showed consistent results with NCM460 cell line and miR-21 IKO mice. CONCLUSIONS MiR-21 could be a protective factor of intestinal barrier dysfunction, which promoting the expression of TJ protein by targeting ROCK1 in vivo and in vitro.
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Affiliation(s)
- Zhihua Liu
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Anorectal Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Chao Li
- Department of Anorectal Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Shihua Chen
- Department of Anorectal Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Hongcheng Lin
- Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Huan Zhao
- Department of Shenzhen Ruikang Pharmaceutical Technology Co. Ltd, Shenzhen, Guangdong, China
| | - Min Liu
- Department of Anorectal Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Colorectal Surgery, The Sixth Affiliated Hospital of Sun Yat-Sen University, Guangzhou, China
| | - Jinsheng Weng
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Ting Liu
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Xiaomei Li
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chao Lei
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Anorectal Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Chen Li
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.,Department of Anorectal Surgery, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Yanqiong Jiang
- Department of Clinical Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
| | - Mary Pat Moyer
- Department of Surgery, University of Texas Health Science Center at San Antonio, San Antonio, Texas
| | - Chunxia Yin
- Department of Gynaecology and Obstetrics, Changchun Obstetrics and Gynecology Hospital, Changchun, Jilin, China
| | - Xinke Zhou
- Department of Center Laboratory, The Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, China
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7
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Cromer WE, Zawieja DC. Acute exposure to space flight results in evidence of reduced lymph Transport, tissue fluid Shifts, and immune alterations in the rat gastrointestinal system. LIFE SCIENCES IN SPACE RESEARCH 2018; 17:74-82. [PMID: 29753416 DOI: 10.1016/j.lssr.2018.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/09/2018] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
Space flight causes a number of alterations in physiological systems, changes in the immunological status of subjects, and altered interactions of the host to environmental stimuli. We studied the effect of space flight on the lymphatic system of the gastrointestinal tract which is responsible for lipid transport and immune surveillance which includes the host interaction with the gut microbiome. We found that there were signs of tissue damage present in the space flown animals that was lacking in ground controls (epithelial damage, crypt morphological changes, etc.). Additionally, morphology of the lymphatic vessels in the tissue suggested a collapsed state at time of harvest and there was a profound change in the retention of lipid in the villi of the ileum. Contrary to our assumptions there was a reduction in tissue fluid volume likely associated with other fluid shifts described. The reduction of tissue fluid volume in the colon and ileum is a likely contributing factor to the state of the lymphatic vessels and lipid transport issues observed. There were also associated changes in the number of MHC-II+ immune cells in the colon tissue, which along with reduced lymphatic competence would favor immune dysfunction in the tissue. These findings help expand our understanding of the effects of space flight on various organ systems. It also points out potential issues that have not been closely examined and have to potential for the need of countermeasure development.
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Affiliation(s)
- W E Cromer
- Department of Medical Physiology, Texas A&M University Health Science Center, United States.
| | - D C Zawieja
- Department of Medical Physiology, Texas A&M University Health Science Center, United States
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8
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Steineck G, Sjöberg F, Skokic V, Bull C, Wilderäng U, Alevronta E, Dunberger G, Bergmark K, Jörnsten R. Late radiation-induced bowel syndromes, tobacco smoking, age at treatment and time since treatment - gynecological cancer survivors. Acta Oncol 2017; 56:682-691. [PMID: 28366105 DOI: 10.1080/0284186x.2017.1307519] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND It is unknown whether smoking; age at time of radiotherapy or time since radiotherapy influence the intensity of late radiation-induced bowel syndromes. MATERIAL AND METHODS We have previously identified 28 symptoms decreasing bowel health among 623 gynecological-cancer survivors (three to twelve years after radiotherapy) and 344 matched population-based controls. The 28 symptoms were grouped into five separate late bowel syndromes through factor analysis. Here, we related possible predictors of bowel health to syndrome intensity, by combining factor analysis weights and symptom frequency on a person-incidence scale. RESULTS A strong (p < .001) association between smoking and radiation-induced urgency syndrome was found with a syndrome intensity (normalized factor score) of 0.4 (never smoker), 1.2 (former smoker) and 2.5 (current smoker). Excessive gas discharge was also related to smoking (p = .001). Younger age at treatment resulted in a higher intensity, except for the leakage syndrome. For the urgency syndrome, intensity decreased with time since treatment. CONCLUSIONS Smoking aggravates the radiation-induced urgency syndrome and excessive gas discharge syndrome. Smoking cessation may promote bowel health among gynecological-cancer survivors. Furthermore, by understanding the mechanism for the decline in urgency-syndrome intensity over time, we may identify new strategies for prevention and alleviation.
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Affiliation(s)
- Gunnar Steineck
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
- Department of Oncology and Pathology, Division of Clinical Cancer Epidemiology, Karolinska Institutet, Stockholm, Sweden
| | - Fei Sjöberg
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Viktor Skokic
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Cecilia Bull
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Ulrica Wilderäng
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Eleftheria Alevronta
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Gail Dunberger
- Department of Health Care Sciences, Ersta Sköndal Bräcke University College, Stockholm, Sweden
| | - Karin Bergmark
- Division of Clinical Cancer Epidemiology, Department of Oncology, Institute of Clinical Sciences, Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden
| | - Rebecka Jörnsten
- Mathematical Sciences, Chalmers University of Technology and University of Gothenburg, Gothenburg, Sweden
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9
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Dun Y, Liu M, Chen J, Peng D, Zhao H, Zhou Z, Wang T, Liu C, Guo Y, Zhang C, Yuan D. Regulatory effects of saponins from Panax japonicus on colonic epithelial tight junctions in aging rats. J Ginseng Res 2016; 42:50-56. [PMID: 29348722 PMCID: PMC5766693 DOI: 10.1016/j.jgr.2016.12.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2016] [Revised: 10/27/2016] [Accepted: 12/20/2016] [Indexed: 12/24/2022] Open
Abstract
Background Saponins from Panax japonicus (SPJ) are the most abundant and main active components of P. japonicus, which replaces ginseng roots in treatment for many kinds of diseases in the minority ethnic group in China. Our previous studies have demonstrated that SPJ has the effects of anti-inflammation through the mitogen-activated protein kinase (MAPK) and nuclear factor kappa B (NF-κB) signaling pathways. The present study was designed to investigate whether SPJ can modulate intestinal tight junction barrier in aging rats and further to explore the potential mechanism. Methods Aging rats had been treated with different doses (10 mg/kg, 30 mg/kg, and 60 mg/kg) of SPJ for 6 mo since they were 18 mo old. After the rats were euthanized, the colonic samples were harvested. Levels of tight junctions (claudin-1 and occludin) were determined by immunohistochemical staining. Levels of proinflammatory cytokines (interleukin-1β and tumor necrosis factor-α) were examined by Western blot. NF-κB and phosphorylation of MAPK signaling pathways were also determined by Western blot. Results We found that SPJ increased the expression of the tight junction proteins claudin-1 and occludin in the colon of aging rats. Treatment with SPJ decreased the levels of interleukin-1β and tumor necrosis factor-α, reduced the phosphorylation of three MAPK isoforms, and inhibited the expression of NF-κB in the colon of aging rats. Conclusion The studies demonstrated that SPJ modulates the damage of intestinal epithelial tight junction in aging rats, inhibits inflammation, and downregulates the phosphorylation of the MAPK and NF-κB signaling pathways.
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Affiliation(s)
- Yaoyan Dun
- Medical College of China Three Gorges University, Yichang, China
| | - Min Liu
- Medical College of China Three Gorges University, Yichang, China
| | - Jing Chen
- Medical College of China Three Gorges University, Yichang, China
| | - Danli Peng
- Medical College of China Three Gorges University, Yichang, China
| | - Haixia Zhao
- Medical College of China Three Gorges University, Yichang, China
| | - Zhiyong Zhou
- Medical College of China Three Gorges University, Yichang, China
| | - Ting Wang
- Medical College of China Three Gorges University, Yichang, China
| | - Chaoqi Liu
- Medical College of China Three Gorges University, Yichang, China
| | - Yuhui Guo
- Medical College of China Three Gorges University, Yichang, China
| | - Changcheng Zhang
- Medical College of China Three Gorges University, Yichang, China
| | - Ding Yuan
- Renhe Hospital of China Three Gorges University, Yichang, China
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10
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Chandrakesan P, May R, Weygant N, Qu D, Berry WL, Sureban SM, Ali N, Rao C, Huycke M, Bronze MS, Houchen CW. Intestinal tuft cells regulate the ATM mediated DNA Damage response via Dclk1 dependent mechanism for crypt restitution following radiation injury. Sci Rep 2016; 6:37667. [PMID: 27876863 PMCID: PMC5120335 DOI: 10.1038/srep37667] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 11/01/2016] [Indexed: 12/18/2022] Open
Abstract
Crypt epithelial survival and regeneration after injury require highly coordinated complex interplay between resident stem cells and diverse cell types. The function of Dclk1 expressing tuft cells regulating intestinal epithelial DNA damage response for cell survival/self-renewal after radiation-induced injury is unclear. Intestinal epithelial cells (IECs) were isolated and purified and utilized for experimental analysis. We found that small intestinal crypts of VillinCre;Dclk1f/f mice were hypoplastic and more apoptotic 24 h post-total body irradiation, a time when stem cell survival is p53-independent. Injury-induced ATM mediated DNA damage response, pro-survival genes, stem cell markers, and self-renewal ability for survival and restitution were reduced in the isolated intestinal epithelial cells. An even greater reduction in these signaling pathways was observed 3.5 days post-TBI, when peak crypt regeneration occurs. We found that interaction with Dclk1 is critical for ATM and COX2 activation in response to injury. We determined that Dclk1 expressing tuft cells regulate the whole intestinal epithelial cells following injury through paracrine mechanism. These findings suggest that intestinal tuft cells play an important role in regulating the ATM mediated DNA damage response, for epithelial cell survival/self-renewal via a Dclk1 dependent mechanism, and these processes are indispensable for restitution and function after severe radiation-induced injury.
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Affiliation(s)
- Parthasarathy Chandrakesan
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- OU Cancer Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Randal May
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Nathaniel Weygant
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Dongfeng Qu
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- OU Cancer Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - William L. Berry
- OU Cancer Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Sripathi M. Sureban
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Naushad Ali
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Chinthalapally Rao
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- OU Cancer Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Mark Huycke
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
| | - Michael S. Bronze
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Courtney W. Houchen
- Department of Medicine, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- OU Cancer Institute, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
- Department of Veterans Affairs Medical Center, Oklahoma City, OK 73104, USA
- COARE Biotechnology, Inc., Oklahoma City, OK 73104, USA
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11
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Bao A, Li F, Zhang M, Chen Y, Zhang P, Zhou X. Impact of ozone exposure on the response to glucocorticoid in a mouse model of asthma: involvements of p38 MAPK and MKP-1. Respir Res 2014; 15:126. [PMID: 25287866 PMCID: PMC4196074 DOI: 10.1186/s12931-014-0126-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 10/02/2014] [Indexed: 11/12/2022] Open
Abstract
Background Molecular mechanisms involved in the oxidative stress induced glucocorticoids insensitivity remain elusive. The mitogen-activated protein kinase phosphatase (MKP) 1 mediates a part of glucocorticoids action and can be modified by exogenous oxidants. Whether oxidant ozone (O3) can affect the function of MKP-1 and hence blunt the response to corticotherapy is not clear. Methods Here we employed a murine model of asthma established with ovalbumin (OVA) sensitization and challenge to evaluate the influence of O3 on the inhibitory effect of dexamethasone on AHR and airway inflammation, and by administration of SB239063, a selective p38 MAPK inhibitor, to explore the underlying involvements of the activation of p38 MAPK and the expression of MKP-1. Results Ozone exposure not only aggravated the pulmonary inflammation and AHR, but also decreased the inhibitory effects of dexamethasone, accompanied by the elevated oxidative stress, airway neutrophilia, enhanced phosphorylation of p38 MAPK, and upregulated expression of IL-17. Administration of SB239063 caused significant inhibition of the p38 MAPK phosphorylation, alleviation of the airway neutrophilia, and decrement of the ozone-induced IL-17 expression, and partly restored the ozone-impaired effects of dexamethasone. Ozone exposure not only decreased the protein expression of MKP-1, but also diminished the dexamethasone-mediated induction process of MKP-1 mRNA and protein expression. Conclusions The glucocorticoids insensitivity elicited by ozone exposure on current asthma model may involve the enhanced phosphorylation of p38 MAPK and disturbed expression of MKP-1. Electronic supplementary material The online version of this article (doi:10.1186/s12931-014-0126-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | - Xin Zhou
- Department of Respiratory Medicine, Shanghai First People's Hospital, Shanghai Jiao tong University, 100 Haining Road, Shanghai 200080China.
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12
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Fu Y, Yip A, Seah PG, Blasco F, Shi PY, Hervé M. Modulation of inflammation and pathology during dengue virus infection by p38 MAPK inhibitor SB203580. Antiviral Res 2014; 110:151-7. [PMID: 25131378 DOI: 10.1016/j.antiviral.2014.08.004] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 08/04/2014] [Accepted: 08/07/2014] [Indexed: 11/29/2022]
Abstract
Dengue virus (DENV) infection could lead to dengue fever (DF), dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS). The disease outcome is controlled by both viral and host factors. Inflammation mediators from DENV-infected cells could contribute to increased vascular permeability, leading to severe DHF/DSS. Therefore, suppression of inflammation could be a potential therapeutic approach for treatment of dengue patients. In this context, p38 MAPK (mitogen-activated protein kinase) is a key enzyme that modulates the initiation of stress and inflammatory responses. Here we show that SB203580, a p38 MAPK inhibitor, suppressed the over production of DENV-induced pro-inflammatory mediators such as TNF-α, IL-8, and RANTES from human PBMCs, monocytic THP-1, and granulocyte KU812 cell lines. Oral administration of SB203580 in DENV-infected AG129 mice prevented hematocrit rise and lymphopenia, limited the development of inflammation and pathology (including intestine leakage), and significantly improved survival. These results, for the first time, have provided experimental evidence to imply that a short term inhibition of p38 MAPK may be beneficial to reduce disease symptoms in dengue patients.
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Affiliation(s)
- Yilong Fu
- Novartis Institute for Tropical Diseases, Singapore 138670, Singapore
| | - Andy Yip
- Novartis Institute for Tropical Diseases, Singapore 138670, Singapore
| | - Peck Gee Seah
- Novartis Institute for Tropical Diseases, Singapore 138670, Singapore
| | - Francesca Blasco
- Novartis Institute for Tropical Diseases, Singapore 138670, Singapore
| | - Pei-Yong Shi
- Novartis Institute for Tropical Diseases, Singapore 138670, Singapore.
| | - Maxime Hervé
- Novartis Institute for Tropical Diseases, Singapore 138670, Singapore.
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13
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Blirando K, Hneino M, Martelly I, Benderitter M, Milliat F, François A. Mast cells and ionizing radiation induce a synergistic expression of inflammatory genes in endothelial cells by a mechanism involving p38α MAP kinase and (p65) NF-κB activation. Radiat Res 2012; 178:556-67. [PMID: 23088768 DOI: 10.1667/rr3058.1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Vascular endothelium is a key compartment involved in the development of normal tissue toxicity associated with cancer radiation therapy, i.e., acute inflammation and late fibrosis. Radiation-induced endothelial cell activation has been extensively studied, and activated endothelial cells are characterized by increased expression of inflammatory mediators and adhesion molecules, and activation of the coagulation and thrombosis pathways. However, little is known about the role of vascular endothelium interaction with resident immune cells, such as mast cells on its response to irradiation. Here, we report that endothelial exposure to mast cell conditioned medium and irradiation induces a synergistic expression of many inflammatory genes including interleukin-6 and interleukin-8, CXCL2 and E-selectin. This synergy is blocked by the histamine H1 receptor antagonist mepyramine and partially mimicked by exogenous histamine addition before irradiation. Using pharmacological and molecular inhibition approaches, we show the p38α MAP kinase and p65 (NF-κB) dependence of the synergy. Moreover, our data show a link between both pathways, with p65 (NF-κB) being downstream of p38. These data highlight the possible exacerbation of the radiation-induced endothelial inflammatory response by its interactions with immune cells. It also suggest that p38α MAP kinase and p65 (NF-κB) inhibition in vascular endothelium may limit excessive tissue inflammation induced by radiation therapy, and thereby limit the associated acute and late tissue damage.
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Affiliation(s)
- Karl Blirando
- Laboratory of Radiopathology and Experimental Therapies, Institute for Radiological Protection and Nuclear Safety, 92265 Fontenay-aux-Roses, France
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14
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Validation of a surgical technique for rat intestinal irradiation: potential side effects prevention by dietary grape phenolics. Dig Dis Sci 2012; 57:2562-70. [PMID: 22615014 DOI: 10.1007/s10620-012-2211-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2012] [Accepted: 04/25/2012] [Indexed: 02/07/2023]
Abstract
AIMS This study evaluates and defines the histological and biochemical consequences of irradiation on the Hauer-Jensen intestinal model and investigates the potential effects of dietary polyphenols. MAIN METHODS Sprague-Dawley rats were orchiectomized, and an ileal loop was transposed to the left part of the scrotum, then irradiated 2 weeks after surgery with a single dose of 21 Gy (4.49 Gy/min). Four groups of rats received either phenolic extracts from grape seeds (EGS) and from red wine (ACYS, EGT), or pure quercetin 3-O-β-glucoside (Q3G), for 5 days before the irradiation and were sacrificed 2 weeks after. Antioxidant enzyme activities, i.e. superoxide dismutase (SOD) and glutathione peroxidase activity (GSHPx), and oxidative markers such as myeloperoxidase activity (MPO) and thiobarbituric acid reactive substances (MDA) were measured as well as cytokine-induced neutrophil chemoattractant level (CINC-1), a chemokine involved in inflammation. KEY FINDINGS Irradiated rats exhibited a high radiation injury score (RIS) with a thickened serosa, mucosal loss and ulceration, and epithelial atypicality. Intestinal MPO activity and CINC-1 concentration were significantly increased in irradiated animals (60 and 66 %, respectively). Higher plasma MDA levels (58 %) and SOD activity (32 %) were accompanied by a reduced GSHPx activity (79 %). However, feeding phenolic extracts remarkably reduced levels of blood SOD activity (34 % on average), intestinal CINC-1 (25-75 % range) and MPO activity (36-84 %). Except for Q3G, phenolics preserved the intestinal structure. SIGNIFICANCE These findings show that irradiation triggers an inflammation, and an oxidative stress by disturbing the pro-oxidant/antioxidant balance and indicate that phenolics supply exerts preventive effects against radio-induced intestinal impairment.
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15
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Hoogendijk AJ, Pinhanços SS, van der Poll T, Wieland CW. Intrapulmonary administration of a p38 mitogen activated protein kinase inhibitor partially prevents pulmonary inflammation. Immunobiology 2012; 218:435-42. [PMID: 22727776 DOI: 10.1016/j.imbio.2012.05.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Accepted: 05/30/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND Gram-positive and gram-negative bacteria are common causative agents of respiratory tract infection. Lipopolysaccharide (LPS) is a component of the gram-negative cell wall and a strong inducer of inflammation. The main proinflammatory component of the gram-positive bacterial cell wall is lipoteichoic acid (LTA). The protein kinase p38 mitogen activated protein kinase (MAPK) plays an important role in the inflammatory process induced by these two bacterial structures. AIM We here sought to establish the impact of local p38 MAPK inhibition on lung inflammatory responses induced by LPS and LTA. We investigated the effects of direct intrapulmonary delivery of a p38 MAPK inhibitor on local LPS and LTA induced airway inflammation in mice. RESULTS In vitro, BIRB 796 reduced LPS induced p38 MAPK phosphorylation in alveolar macrophage and respiratory epithelial cell lines and diminished cytokine/chemokine release. In vivo, BIRB 796 circumvented p38 MAPK phosphorylation in both LPS and LTA induced inflammation. Cellular influx was not affected. Lung TNFα, IL-6, MIP-2 and LIX production was reduced in LPS induced inflammation but not in lung inflammation by LTA. BIRB 796 reduced total protein and IgM in bronchoalveolar lavage fluid after LTA instillation, while enhancing TATc and d-dimers in LPS- and LTA induced inflammation. CONCLUSION These results taken together with earlier studies on systemic administration of p38 MAPK inhibitors in rodents and humans suggest that direct intrapulmonary delivery of a p38 MAPK inhibitor is less effective in inhibiting inflammation and is associated with unexpected procoagulant effects in the bronchoalveolar space.
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Affiliation(s)
- Arie Johan Hoogendijk
- Center for Infection and Immunity Amsterdam, Academic Medical Center, Amsterdam, The Netherlands.
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16
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Radiation-induced platelet-endothelial cell interactions are mediated by P-selectin and P-selectin glycoprotein ligand-1 in the colonic microcirculation. Surgery 2012; 151:606-11. [DOI: 10.1016/j.surg.2011.09.045] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2011] [Accepted: 09/26/2011] [Indexed: 11/23/2022]
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17
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Zhang S, Rahman M, Zhang S, Wang Y, Herwald H, Jeppsson B, Thorlacius H. p38 Mitogen-activated protein kinase signaling regulates streptococcal M1 protein-induced neutrophil activation and lung injury. J Leukoc Biol 2011; 91:137-145. [DOI: 10.1189/jlb.0511268] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/30/2023] Open
Abstract
ABSTRACT
M1 serotype of Streptococcus pyogenes can cause STSS and acute lung damage. Herein, the purpose was to define the role of p38 MAPK signaling in M1 protein-induced pulmonary injury. Male C57BL/6 mice were treated with specific p38 MAPK inhibitors (SB 239063 and SKF 86002) prior to M1 protein challenge. Edema, neutrophil infiltration, and CXC chemokines were determined in the lung, 4 h after M1 protein administration. Flow cytometry was used to determine Mac-1 expression. Phosphorylation and activity of p38 MAPK were determined by immunoprecipitation and Western blot. IVM was used to analyze leukocyte-endothelium interactions in the pulmonary microcirculation. M1 protein challenge increased phosphorylation and activity of p38 MAPK in the lung, which was inhibited by SB 239063 and SKF 86002. Inhibition of p38 MAPK activity decreased M1 protein-induced infiltration of neutrophils, edema, and CXC chemokine formation in the lung, as well as Mac-1 up-regulation on neutrophils. IVM showed that p38 MAPK inhibition reduced leukocyte rolling and adhesion in the pulmonary microvasculature of M1 protein-treated mice. Our results indicate that p38 MAPK signaling regulates neutrophil infiltration in acute lung injury induced by streptococcal M1 protein. Moreover, p38 MAPK activity controls CXC chemokine formation in the lung, as well as neutrophil expression of Mac-1 and recruitment in the pulmonary microvasculature. In conclusion, these findings suggest that targeting the p38 MAPK signaling pathway may open new opportunities to protect against lung injury in streptococcal infections.
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Affiliation(s)
- Songen Zhang
- Department of Clinical Sciences, Section for Surgery, Malmö University Hospital, Lund University , Malmö, Sweden
| | - Milladur Rahman
- Department of Clinical Sciences, Section for Surgery, Malmö University Hospital, Lund University , Malmö, Sweden
| | - Su Zhang
- Department of Clinical Sciences, Section for Surgery, Malmö University Hospital, Lund University , Malmö, Sweden
| | - Yongzhi Wang
- Department of Clinical Sciences, Section for Surgery, Malmö University Hospital, Lund University , Malmö, Sweden
| | - Heiko Herwald
- Section for Clinical and Experimental Infection Medicine, Lund University , Malmö, Sweden
| | - Bengt Jeppsson
- Department of Clinical Sciences, Section for Surgery, Malmö University Hospital, Lund University , Malmö, Sweden
| | - Henrik Thorlacius
- Department of Clinical Sciences, Section for Surgery, Malmö University Hospital, Lund University , Malmö, Sweden
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18
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Attaching and effacing bacterial effector NleC suppresses epithelial inflammatory responses by inhibiting NF-κB and p38 mitogen-activated protein kinase activation. Infect Immun 2011; 79:3552-62. [PMID: 21746856 DOI: 10.1128/iai.05033-11] [Citation(s) in RCA: 79] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Enteropathogenic Escherichia coli (EPEC) and enterohemorrhagic E. coli are noninvasive attaching and effacing (A/E) bacterial pathogens that cause intestinal inflammation and severe diarrheal disease. These pathogens utilize a type III secretion system to deliver effector proteins into host epithelial cells, modulating diverse cellular functions, including the release of the chemokine interleukin-8 (IL-8). While studies have implicated the effectors NleE (non-locus of enterocyte effacement [LEE]-encoded effector E) and NleH1 in suppressing IL-8 release, by preventing NF-κB nuclear translocation, the impact of these effectors only partially replicates the immunosuppressive actions of wild-type EPEC, suggesting another effector or effectors are involved. Testing an array of EPEC mutants, we identified the non-LEE-encoded effector C (NleC) as also suppressing IL-8 release. Infection by ΔnleC EPEC led to exaggerated IL-8 release from infected Caco-2 and HT-29 epithelial cells. NleC localized to EPEC-induced pedestals, with signaling studies revealing NleC inhibits both NF-κB and p38 mitogen-activated protein kinase (MAPK) activation. Using Citrobacter rodentium, a mouse-adapted A/E bacterium, we found that ΔnleC and wild-type C. rodentium-infected mice carried similar pathogen burdens, yet ΔnleC strain infection led to worsened colitis. Similarly, infection with ΔnleC C. rodentium in a cecal loop model induced significantly greater chemokine responses than infection with wild-type bacteria. These studies thus advance our understanding of how A/E pathogens subvert host inflammatory responses.
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19
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Wolff HA, Rolke D, Rave-Fränk M, Schirmer M, Eicheler W, Doerfler A, Hille A, Hess CF, Matthias C, Rödel RMW, Christiansen H. Analysis of chemokine and chemokine receptor expression in squamous cell carcinoma of the head and neck (SCCHN) cell lines. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2011; 50:145-154. [PMID: 21085979 PMCID: PMC3040826 DOI: 10.1007/s00411-010-0341-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2010] [Accepted: 11/01/2010] [Indexed: 05/30/2023]
Abstract
The purpose of this work was to analyze chemokine and chemokine receptor expression in untreated and in irradiated squamous cell carcinoma of the head and neck (SCCHN) tumor cell lines, aiming at the establishment of assays to test for the relevance of chemokine and chemokine receptor expression in the response of SCCHN to radiotherapy and radiochemotherapy. Five low passage and 10 established SCCHN lines, as well as two normal cell lines, were irradiated at 2 Gy or sham-irradiated, and harvested between 1 and 48 h after treatment. For chemokines with CC and CXC structural motifs and their receptors, transcript levels of target and reference genes were quantified relatively by real-time PCR. In addition, CXCL1 and CXCL12 protein expression was analyzed by ELISA. A substantial variation in chemokine and chemokine receptor expression between SCCHN was detected. Practically, all cell lines expressed CCL5 and CCL20, while CCL2 was expressed in normal cells and in some of the tumor cell lines. CXCL1, CXCL2, CXCL3, CXCL10, and CXCL11 were expressed in the vast majority of the cell lines, while the expression of CXCL9 and CXCL12 was restricted to fibroblasts and few tumor cell lines. None of the analyzed cell lines expressed the chemokines CCL3, CCL4, or CCL19. Of the receptors, transcript expression of CCR1, CCR2, CCR3, CCR5, CCR7, CCXR2, and CCXR3 was not detected, and CCR6, CXCR1, and CXCR4 expression was restricted to few tumor cells. Radiation caused up- and down-regulation with respect to chemokine expressions, while for chemokine receptor expressions down-regulations were prevailing. CXCL1 and CXCL12 protein expression corresponded well with the mRNA expression. We conclude that the substantial variation in chemokine and chemokine receptor expression between SCCHN offer opportunities for the establishment of assays to test for the relevance of chemokine and chemokine receptor expression in the response of SCCHN to radiotherapy and radiochemotherapy.
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MESH Headings
- Carcinoma, Squamous Cell/drug therapy
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/pathology
- Carcinoma, Squamous Cell/radiotherapy
- Cell Line, Tumor
- Chemokines/genetics
- Gene Expression Profiling
- Gene Expression Regulation, Neoplastic/drug effects
- Gene Expression Regulation, Neoplastic/radiation effects
- Head and Neck Neoplasms/drug therapy
- Head and Neck Neoplasms/genetics
- Head and Neck Neoplasms/pathology
- Head and Neck Neoplasms/radiotherapy
- Humans
- RNA, Messenger/genetics
- RNA, Messenger/metabolism
- Receptors, Chemokine/genetics
- Reproducibility of Results
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Affiliation(s)
- Hendrik A. Wolff
- Department of Radiotherapy and Radiation Oncology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - David Rolke
- Department of Radiotherapy and Radiation Oncology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Margret Rave-Fränk
- Department of Radiotherapy and Radiation Oncology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Markus Schirmer
- Department of Pharmacology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Wolfgang Eicheler
- Department of Radiation Oncology, OncoRay-Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Annegret Doerfler
- Department of Radiation Oncology, OncoRay-Center for Radiation Research in Oncology, Medical Faculty Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Andrea Hille
- Department of Radiotherapy and Radiation Oncology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Clemens F. Hess
- Department of Radiotherapy and Radiation Oncology, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Christoph Matthias
- Department of Otorhinolaryngology-Head and Neck Surgery, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Ralph M. W. Rödel
- Department of Otorhinolaryngology-Head and Neck Surgery, Universitätsmedizin Göttingen, Göttingen, Germany
| | - Hans Christiansen
- Department of Radiotherapy and Radiation Oncology, Universitätsmedizin Göttingen, Göttingen, Germany
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Rossi JL, Ralay Ranaivo H, Patel F, Chrzaszcz M, Venkatesan C, Wainwright MS. Albumin causes increased myosin light chain kinase expression in astrocytes via p38 mitogen-activated protein kinase. J Neurosci Res 2011; 89:852-61. [PMID: 21360574 DOI: 10.1002/jnr.22600] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Revised: 12/20/2010] [Accepted: 12/21/2010] [Indexed: 12/30/2022]
Abstract
Myosin light chain kinase (MLCK) plays an important role in the reorganization of the cytoskeleton, leading to disruption of vascular barrier integrity in multiple organs, including the blood-brain barrier (BBB), after traumatic brain injury (TBI). MLCK has been linked to transforming growth factor (TGF) and rho kinase signaling pathways, but the mechanisms regulating MLCK expression following TBI are not well understood. Albumin leaks into the brain parenchyma following TBI, activates glia, and has been linked to TGF-β receptor signaling. We investigated the role of albumin in the increase of MLCK in astrocytes and the signaling pathways involved in this increase. After midline closed-skull TBI in mice, there was a significant increase in MLCK-immunoreactive (IR) cells and albumin extravasation, which was prevented by treatment with the MLCK inhibitor ML-7. Using immunohistochemical methods, we identified the MLCK-IR cells as astrocytes. In primary astrocytes, exposure to albumin increased both isoforms of MLCK, 130 and 210. Inhibition of the TGF-β receptor partially prevented the albumin-induced increase in both isoforms, which was not prevented by inhibition of smad3. Inhibition of p38 MAPK, but not ERK, JNK, or rho kinase, also prevented this increase. These results are further evidence of a role of MLCK in the mechanisms of BBB compromise following TBI and identify astrocytes as a cell type, in addition to endothelium in the BBB, that expresses MLCK. These findings implicate albumin, acting through p38 MAPK, in a novel mechanism by which activation of MLCK following TBI may lead to compromise of the BBB.
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Affiliation(s)
- Janet L Rossi
- Department of Pediatrics, Divisions of Critical Care, Children's Memorial Hospital, Northwestern University Feinberg School of Medicine, Chicago, IL 60614, USA
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21
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Cromer WE, Mathis JM, Granger DN, Chaitanya GV, Alexander JS. Role of the endothelium in inflammatory bowel diseases. World J Gastroenterol 2011; 17:578-93. [PMID: 21350707 PMCID: PMC3040330 DOI: 10.3748/wjg.v17.i5.578] [Citation(s) in RCA: 105] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 06/29/2010] [Accepted: 07/06/2010] [Indexed: 02/06/2023] Open
Abstract
Inflammatory bowel diseases (IBD) are a complex group of diseases involving alterations in mucosal immunity and gastrointestinal physiology during both initiation and progressive phases of the disease. At the core of these alterations are endothelial cells, whose continual adjustments in structure and function coordinate vascular supply, immune cell emigration, and regulation of the tissue environment. Expansion of the endothelium in IBD (angiogenesis), mediated by inflammatory growth factors, cytokines and chemokines, is a hallmark of active gut disease and is closely related to disease severity. The endothelium in newly formed or inflamed vessels differs from that in normal vessels in the production of and response to inflammatory cytokines, growth factors, and adhesion molecules, altering coagulant capacity, barrier function and blood cell recruitment in injury. This review examines the roles of the endothelium in the initiation and propagation of IBD pathology and distinctive features of the intestinal endothelium contributing to these conditions.
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Frolova EG, Pluskota E, Krukovets I, Burke T, Drumm C, Smith JD, Blech L, Febbraio M, Bornstein P, Plow EF, Stenina OI. Thrombospondin-4 regulates vascular inflammation and atherogenesis. Circ Res 2010; 107:1313-25. [PMID: 20884877 DOI: 10.1161/circresaha.110.232371] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
RATIONALE Thrombospondin (TSP)-4 is an extracellular protein that has been linked to several cardiovascular pathologies. However, a role for TSP-4 in vascular wall biology remains unknown. OBJECTIVE We have examined the effects of TSP-4 gene (Thbs4) knockout on the development of atherosclerotic lesions in ApoE(-/-) mice. METHODS AND RESULTS Deficiency in TSP-4 reduced atherosclerotic lesions: at 20 weeks of age, the size of the aortic root lesions in Thbs4(-/-)/ApoE(-/-) mice was decreased by 48% in females and by 39% in males on chow diets; in mice on Western diets, lesions in the descending aorta were reduced by 30% in females and 33% in males. In ApoE(-/-) mice, TSP-4 was abundant in vessel areas prone to lesion development and in the matrix of the lesions themselves. TSP-4 deficiency reduced the number of macrophages in lesions in all groups by ≥ 2-fold. In addition, TSP-4 deficiency reduced endothelial cell activation (expression of surface adhesion molecules) and other markers of inflammation in the vascular wall (decreased production of monocyte chemoattractant protein-1 and activation of p38). In vitro, both the adhesion and migration of wild-type macrophages increased in the presence of purified recombinant TSP-4 in a dose-dependent manner (up to 7- and 4.7-fold, respectively). These responses led to p38-MAPkinase activation and were dependent on β(2) and β(3) integrins, which recognize TSP-4 as a ligand. CONCLUSIONS TSP-4 is abundant in atherosclerotic lesions and in areas prone to development of lesions and may influence the recruitment of macrophages by activating endothelial cells and directly interacting with macrophages to increase their adhesion and migration. Our observations suggest an important role for this matricellular protein in the local regulation of inflammation associated with atherogenesis.
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Affiliation(s)
- Ella G Frolova
- Department of Molecular Cardiology and Joseph J. Jacob Center for Thrombosis and Vascular Biology, Lerner Research Institute, Cleveland Clinic, Ohio 44195, USA
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Mihaescu A, Santén S, Jeppsson B, Thorlacius H. Rho kinase signalling mediates radiation-induced inflammation and intestinal barrier dysfunction. Br J Surg 2010; 98:124-31. [DOI: 10.1002/bjs.7279] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/04/2010] [Indexed: 12/22/2022]
Abstract
Abstract
Background
Radiotherapy is important in the management of pelvic malignancies, but radiation-induced intestinal damage is a dose-limiting factor. Microvascular injury and epithelial barrier dysfunction are considered to be rate-limiting aspects in radiation-induced enteropathy. This study investigated the role of Rho kinase signalling in radiation-induced inflammation and intestinal barrier dysfunction.
Methods
The specific Rho kinase inhibitor Y-27632 (1 and 10 mg/kg) was given to C57BL/6J mice before challenge with 20 Gy radiation. Leucocyte– and platelet–endothelium interactions in the colonic microcirculation were assessed by intravital microscopy. Levels of myeloperoxidase (MPO) and CXC chemokines (macrophage inflammatory protein 2 and cytokine-induced neutrophil chemoattractant), and intestinal leakage were quantified after 16 h.
Results
Radiation increased leucocyte and platelet recruitment, MPO activity, CXC chemokine production and intestinal leakage. Y-27632 significantly reduced radiation-induced leucocyte rolling and abolished adhesion; it also decreased platelet rolling and adhesion by 55 and 74 per cent respectively (P < 0·050). Inhibition of Rho kinase signalling significantly decreased radiation-provoked formation of CXC chemokines, MPO activity by 52 per cent, and intestinal leakage by 67 per cent (P < 0·050).
Conclusion
Rho kinase activity constitutes an important signalling mechanism in radiation-induced inflammation and intestinal barrier dysfunction.
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Affiliation(s)
- A Mihaescu
- Department of Surgery, Malmö University Hospital, Lund University, 205 02 Malmö, Sweden
| | - S Santén
- Department of Surgery, Malmö University Hospital, Lund University, 205 02 Malmö, Sweden
| | - B Jeppsson
- Department of Surgery, Malmö University Hospital, Lund University, 205 02 Malmö, Sweden
| | - H Thorlacius
- Department of Surgery, Malmö University Hospital, Lund University, 205 02 Malmö, Sweden
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Ye HH, Zhang YM. Advances in understanding the relationship between Toll-like receptors and digestive system injury. Shijie Huaren Xiaohua Zazhi 2010; 18:2339-2345. [DOI: 10.11569/wcjd.v18.i22.2339] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Toll-like receptors (TLRs) are cell-surface molecules that play an important role in the host immune response. More and more evidence indicates that TLRs can recognize special pattern molecules to activate certain signal transduction pathways and result in the release of numerous inflammatory mediators and active substances to induce digestive system injury, such as Helicobacter pylori infection-induced gastric mucosal injury, alcohol-induced gastritis, alcohol-induced liver injury, acute hemorrhagic necrotizing pancreatitis, hepatic ischemia-reperfusion injury (I/RI), and dextran sodium sulfate (DSS)-induced colitis. Here, we review the advances in understanding the relationship between TLRs and digestive system injury and explore the clinical value of TLRs in the diagnosis and treatment of digestive system diseases.
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