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Wang GY, Shang D, Zhang GX, Song HY, Jiang N, Liu HH, Chen HL. Qingyi decoction attenuates intestinal epithelial cell injury via the calcineurin/nuclear factor of activated T-cells pathway. World J Gastroenterol 2022; 28:3825-3837. [PMID: 36157544 PMCID: PMC9367229 DOI: 10.3748/wjg.v28.i29.3825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 12/15/2021] [Accepted: 07/11/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Recent studies have demonstrated that dysfunction of the intestinal barrier is a significant contributing factor to the development of severe acute pancreatitis (SAP). A stable intestinal mucosa barrier functions as a major anatomic and functional barrier, owing to the balance between intestinal epithelial cell (IEC) proliferation and apoptosis. There is some evidence that calcium overload may trigger IEC apoptosis and that calcineurin (CaN)/nuclear factor of activated T-cells (NFAT) signaling might play an important role in calcium-mediated apoptosis.
AIM To investigate the potential mechanisms underlying the therapeutic effect of Qingyi decoction (QYD) in SAP.
METHODS A rat model of SAP was created via retrograde infusion of sodium deoxycholate. Serum levels of amylase, tumor necrosis factor (TNF-α), interleukin (IL)-6, D-lactic acid, and diamine oxidase (DAO); histological changes; and apoptosis of IECs were examined in rats with or without QYD treatment. The expression of the two subunits of CaN and NFAT in intestinal tissue was measured via quantitative real-time polymerase chain reaction and western blotting. For in vitro studies, Caco-2 cells were treated with lipopolysaccharide (LPS) and QYD serum, and then cell viability and intracellular calcium levels were detected.
RESULTS Retrograde infusion of sodium deoxycholate increased the severity of pancreatic and intestinal pathology and the levels of serum amylase, TNF-α, and IL-6. Both the indicators of intestinal mucosa damage (D-lactic acid and DAO) and the levels of IEC apoptosis were elevated in the SAP group. QYD treatment reduced the serum levels of amylase, TNF-α, IL-6, D-lactic acid, and DAO and attenuated the histological findings. IEC apoptosis associated with SAP was ameliorated under QYD treatment. In addition, the protein expression levels of the two subunits of CaN were remarkably elevated in the SAP group, and the NFATc3 gene was significantly upregulated at both the transcript and protein levels in the SAP group compared with the control group. QYD significantly restrained CaN and NFATc3 gene expression in the intestine, which was upregulated in the SAP group. Furthermore, QYD serum significantly decreased the LPS-induced elevation in intracellular free Ca2+ levels and inhibited cell death.
CONCLUSION QYD can exert protective effects against intestinal mucosa damage caused by SAP and the protective effects are mediated, at least partially, by restraining IEC apoptosis via the CaN/NFATc3 pathway.
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Affiliation(s)
- Guan-Yu Wang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Dong Shang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Gui-Xin Zhang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Hui-Yi Song
- Laboratory of Integrative Medicine, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
| | - Nan Jiang
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Huan-Huan Liu
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, Liaoning Province, China
| | - Hai-Long Chen
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian 116011, Liaoning Province, China
- Institute of Integrative Medicine of Dalian Medical University, Dalian 116044, Liaoning Province, China
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Sun L, Fan M, Huang D, Li B, Xu R, Gao F, Chen Y. Clodronate-loaded liposomal and fibroblast-derived exosomal hybrid system for enhanced drug delivery to pulmonary fibrosis. Biomaterials 2021; 271:120761. [PMID: 33774524 DOI: 10.1016/j.biomaterials.2021.120761] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 03/04/2021] [Accepted: 03/13/2021] [Indexed: 02/07/2023]
Abstract
Pulmonary fibrosis is a rapidly progressive and fatal fibrotic lung disease with high mortality and morbidity. However, pulmonary fibrosis therapy in the clinic has been limited by poor selectivity and inefficiency of drug delivery to fibroblasts. Herein, a clodronate (CLD)-loaded liposome and fibroblast-derived exosome (EL-CLD) hybrid drug delivery system with non-specific phagocytosis inhibition and fibroblast homing properties, was designed for the treatment of pulmonary fibrosis. EL-CLD effectively depleted Kupffer cells via apoptosis by passive targeting after intravenous injection, and thus significantly reduced accumulation in the liver. Notably, the EL-CLD hybrid system preferentially accumulated in the fibrotic lung, and significantly increased penetration inside pulmonary fibrotic tissue by targeted delivery due to the specific affinity for fibroblasts of the homologous exosome. Nintedanib (NIN), an anti-fibrotic agent used to treat pulmonary fibrosis, was loaded in the EL-CLD system, and achieved a remarkable improvement in curative effects. The enhanced therapeutic efficacy of NIN was a result of enhanced pulmonary fibrotic tissue accumulation and delivery, combined with a diminished macrophage-induced inflammatory response. Hence, the EL-CLD hybrid system acts as an efficient carrier for pulmonary anti-fibrotic drug delivery and should be developed as an efficient fibroblast specific therapy.
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Affiliation(s)
- Lingna Sun
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China
| | - Mingrui Fan
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China
| | - Dong Huang
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China
| | - Bingqin Li
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China
| | - Ruoting Xu
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China
| | - Feng Gao
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China; Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
| | - Yanzuo Chen
- Shanghai Key Laboratory of Functional Materials Chemistry, East China University of Science and Technology, Shanghai, 200237, China; Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, Shanghai Key Laboratory of New Drug Design, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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Naseer QA, Liu L, Xue X, Chen S, Chen J, Qu J, Cui L, Wang X, Dang S. Expression profile of lncRNAs and mRNAs in intestinal macrophages. Mol Med Rep 2020; 22:3735-3746. [PMID: 32901859 PMCID: PMC7533500 DOI: 10.3892/mmr.2020.11470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 07/14/2020] [Indexed: 11/06/2022] Open
Abstract
Non-coding RNAs (ncRNAs) have been previously reported to serve an important role in transcription. In addition, several studies have revealed that long ncRNAs (lncRNAs) have a crucial role in human diseases. However, the association between lncRNAs and inflammation‑induced intestinal macrophages in the intestinal mucosal barrier has remained elusive. In the present study, intestinal macrophages from healthy Sprague Dawley rats were divided into two groups: The experimental group, consisting of intestinal macrophages treated with 1 mg/l lipopolysaccharide (LPS) and the control group, composed of untreated cells. Differentially expressed (DE) lncRNAs and mRNAs between the control and experimental groups were identified using microarray profiling. The levels of DE mRNAs and lncRNAs were measured by reverse transcription‑quantitative PCR (RT‑qPCR). Furthermore, Gene Ontology (GO) and pathway enrichment analyses of DE mRNAs and lncRNAs were performed. To identify core regulatory factors among DE lncRNAs and mRNAs, a lncRNA‑mRNA network was constructed. A total of 357 DE lncRNAs and 542 DE mRNAs between the LPS‑treated and untreated groups were identified (fold-change >1.5; P<0.05). In addition, selected microarray data were confirmed by RT‑qPCR. GO analysis of the DE mRNAs indicated that the biological functions of the upregulated mRNAs included inflammatory response, immune response, metabolic process and signal transduction, whereas those of the downregulated mRNAs were metabolic process, cell cycle, apoptosis and inflammatory response. In addition, pathway enrichment analysis of the upregulated mRNAs revealed that the most enriched pathways were the NF‑κB signaling pathway, B‑cell receptor signaling pathway and apoptosis, while the downregulated mRNAs were significantly involved in metabolic pathways, the phosphatidylinositol signaling system, cytokine‑cytokine receptor interaction and the Toll‑like receptor signaling pathway. The lncRNA‑mRNA co‑expression network suggested that lncRNAs NONMMUT024673 and NONMMUT062258 may have an important role in LPS‑induced intestinal macrophages. The present study identified the DE profiles between LPS‑ and non‑LPS‑treated intestinal macrophages. These DE lncRNAs and mRNAs may be used as potential targets for attenuating excessive inflammatory response in intestinal mucosal barrier dysfunction.
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Affiliation(s)
- Qais Ahmad Naseer
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Lulu Liu
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Xiaofei Xue
- Department of General Surgery, Pucheng Hospital, Weinan, Shaanxi 715500, P.R. China
| | - Siche Chen
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Jixiang Chen
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Jianguo Qu
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Lei Cui
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Xiaogang Wang
- Department of General Surgery, Pucheng Hospital, Weinan, Shaanxi 715500, P.R. China
| | - Shengchun Dang
- Department of General Surgery, The Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
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Grimm S, Wolff E, Walter C, Pabst AM, Mundethu A, Jacobs C, Wehrbein H, Jacobs C. Influence of clodronate and compressive force on IL-1ß-stimulated human periodontal ligament fibroblasts. Clin Oral Investig 2019; 24:343-350. [PMID: 31102041 DOI: 10.1007/s00784-019-02930-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 04/30/2019] [Indexed: 02/07/2023]
Abstract
OBJECTIVES The aim of this study was to investigate in vitro the effect of clodronate on interleukin-1ß (IL-1ß)-stimulated human periodontal ligament fibroblasts (HPdLFs) with the focus on inflammatory factors of orthodontic tooth movement with and without compressive force. MATERIALS AND METHODS HPdLFs were incubated with 5 μM clodronate and 10 ng/mL IL-1ß. After 48 h, cells were exposed to 3 h of compressive force using a centrifuge. The gene expression of cyclooxygenase-2 (COX-2), interleukin-6 (IL-6), matrix metalloproteinase 8 (MMP-8), and the tissue inhibitor of MMP (TIMP-1) was analyzed using RT-PCR. Prostaglandin E2 (PGE-2), IL-6, and TIMP-1 protein syntheses were quantified via ELISA. RESULTS Compressive force and IL-1ß induced an overexpression of COX-2 gene expression (61.8-fold; p < 0.05 compared with control), diminished by clodronate (41.1-fold; p < 0.05 compared with control). Clodronate slowed down the compression and IL-1ß induced IL-6 gene expression (161-fold vs. 85.6-fold; p < 0.05 compared with control). TNF-α was only slightly affected without statistical significance. Clodronate reduced IL-1ß-stimulated MMP-8 expression with and without compressive force. TIMP-1 on gene and protein level was downregulated in all groups. Analyzing the MMP-8/TIMP-1 ratio, the highest ratio was detected in IL-1ß-stimulated HPdLFs with compressive force (21.2-fold; p < 0.05 compared with control). Clodronate diminished IL-1ß-induced upregulation of MMP-8/TIMP-1 ratio with (11.5-fold; p < 0.05 compared with control) and without (12.5-fold; p < 0.05 compared with control) compressive force. CONCLUSION Our study demonstrates a slightly anti-inflammatory effect by clodronate under compressive force in vitro. Additionally, the periodontal remodeling presented by the MMP-8/TIMP-1 ratio seems to be diminished by clodronate. CLINICAL RELEVANCE Reduction of pro-inflammatory factors and reduction of periodontal remodeling might explain reduced orthodontic tooth movement under clodronate intake.
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Affiliation(s)
- Sarah Grimm
- Department of Orthodontics, University Medical Centre, Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany.
| | - Eva Wolff
- Department of Orthodontics, University Medical Centre, Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Christian Walter
- Department of Oral and Maxillofacial Surgery, University Medical Centre, Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Andreas M Pabst
- Department of Oral and Maxillofacial Surgery, University Medical Centre, Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Ambili Mundethu
- Department of Orthodontics, University Medical Centre, Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Cornelius Jacobs
- Department of Traumatology, University of Bonn, Sigmund-Freud-Straße 25, 53127, Bonn, Germany
| | - Heiner Wehrbein
- Department of Orthodontics, University Medical Centre, Johannes Gutenberg University Mainz, Augustusplatz 2, 55131, Mainz, Germany
| | - Collin Jacobs
- Department of Orthodontics, University of Jena, An der Alten Post 4, 07743, Jena, Germany
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Ning JW, Zhang Y, Yu MS, Gu ML, Xu J, Usman A, Ji F. Emodin alleviates intestinal mucosal injury in rats with severe acute pancreatitis via the caspase-1 inhibition. Hepatobiliary Pancreat Dis Int 2017; 16:431-436. [PMID: 28823375 DOI: 10.1016/s1499-3872(17)60041-9] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 06/28/2017] [Indexed: 02/08/2023]
Abstract
BACKGROUND Emodin, a traditional Chinese medicine, has a therapeutic effect on severe acute pancreatitis (SAP), whereas the underlying mechanism is still unclear. Studies showed that the intestinal mucosa impairment, and subsequent release of endotoxin and proinflammatory cytokines such as IL-1β, which further leads to the dysfunction of multiple organs, is the potentially lethal mechanism of SAP. Caspase-1, an IL-1β-converting enzyme, plays an important role in this cytokine cascade process. Investigation of the effect of emodin on regulating the caspase-1 expression and the release proinflammatory cytokines will help to reveal mechanism of emodin in treating SAP. METHODS Eighty Sprague-Dawley rats were randomly divided into four groups (n=20 each group): SAP, sham-operated (SO), emodin-treated (EM) and caspase-1 inhibitor-treated (ICE-I) groups. SAP was induced by retrograde infusion of 3.5% sodium taurocholate into the pancreatic duct. Emodin and caspase-1 inhibitor were given 30 minutes before and 12 hours after SAP induction. Serum levels of IL-1β, IL-18 and endotoxin, histopathological alteration of pancreas tissues, intestinal mucosa, and the intestinal caspase-1 mRNA and protein expressions were assessed 24 hours after SAP induction. RESULTS Rats in the SAP group had higher serum levels of IL-1β and IL-18 (P<0.05), pancreatic and gut pathological scores (P<0.05), and caspase-1 mRNA and protein expressions (P<0.05) compared with the SO group. Compared with the SAP group, rats in the EM and ICE-I groups had lower IL-1β and IL-18 levels (P<0.05), lower pancreatic and gut pathological scores (P<0.05), and decreased expression of intestine caspase-1 mRNA (P<0.05). Ultrastructural analysis by transmission electron microscopy found that rats in the SAP group had vaguer epithelial junctions, more disappeared intercellular joints, and more damaged intracellular organelles compared with those in the SO group or the EM and ICE-I groups. CONCLUSIONS Emodin alleviated pancreatic and intestinal mucosa injury in experimental SAP. Its mechanism may partly be mediated by the inhibition of caspase-1 and its downstream inflammatory cytokines, including IL-1β and IL-18. Our animal data may be applicable in clinical practice.
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Affiliation(s)
| | - Yan Zhang
- First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou 310003, China; Division of Gastroenterology, Yixing People's Hospital, Yixing 214200, China
| | - Mo-Sang Yu
- Division of Gastroenterology, Hangzhou, China
| | - Meng-Li Gu
- Division of Gastroenterology, Hangzhou, China
| | - Jia Xu
- Division of Emergency, Hangzhou, China
| | - Ali Usman
- Division of Gastroenterology, Hangzhou, China
| | - Feng Ji
- Division of Gastroenterology, Hangzhou, China.
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Chen D, Li L, Yan J, Yang X, You Y, Zhou Y, Ling X. The loss of αSNAP downregulates the expression of occludin in the intestinal epithelial cell of acute pancreatitis model. Pancreatology 2014; 14:347-55. [PMID: 25278303 DOI: 10.1016/j.pan.2014.06.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2013] [Revised: 06/11/2014] [Accepted: 06/23/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND OBJECTIVE Intestinal barrier damage is an important event during the occurrence and progression of severe acute pancreatitis. The expression of occludin, one of the main components of the intestinal barrier proteins, is regulated by various factors related to intestinal barrier formation and the remodeling process. The αSNAP, as a novel membrane protein, is ubiquitously expressed in intestinal epithelial cells. This study aimed to investigate the role of αSNAP in acute pancreatitis and the relationship between occludin and αSNAP. METHODS Mild and severe acute pancreatitis models were established by retrograde injections of 0.5% and 3.8% sodium taurocholate solutions, respectively, into rat pancreaticobiliary ducts. The animals were killed at 1, 2, and 3 days after the injection, and the pathological changes of the pancreas and intestinal mucosa, the changes in intestinal permeability, and the protein expression of occludin and αSNAP were assessed. Cultured epithelial IEC-6 cells were further infected with lentiviral αSNAP shRNA, cell apoptosis was determined with flow cytometry (FCM), and any changes in occludin expression were detected by Western blotting and immunofluorescent staining. RESULTS This pathologic study of a rat acute pancreatitis model indicated pancreatic tissue necrosis and inflammatory cell infiltration; the intestinal villi in the severe acute pancreatitis (SAP) group demonstrated edema, lodging, atrophy, and intestinal epithelial cell necrosis, and shedding. The intestinal permeability in rats with pancreatitis increased significantly. The SAP group showed significantly increased levels of serum TNF-α and endotoxins. The results of immunofluorescent staining and Western blotting revealed that compared with the SO (sham operation) and MAP (mild acute pancreatitis) groups, the SAP group displayed significantly downregulated protein expressions of αSNAP and occludin in the intestinal epithelial cells. After the lentiviral transduction of αSNAP shRNA, apoptosis in IEC-6 cells was drastically increased, whereas the expression of occludin was decreased significantly. CONCLUSION The downregulated expression of αSNAP in intestinal epithelial cells leads to reduced occludin expression and enhanced apoptosis of intestinal epithelial cells. Hence, the permeability of the intestinal barrier may be increased in a severe acute pancreatitis model.
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Affiliation(s)
- Daixing Chen
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Lili Li
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Jing Yan
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Xin Yang
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Yang You
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China
| | - Yuan Zhou
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
| | - Xianlong Ling
- Department of Gastroenterology, Xinqiao Hospital, Third Military Medical University, Chongqing 400037, China.
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Liang HY, Chen T, Wang T, Huang Z, Yan HT, Tang LJ. Time course of intestinal barrier function injury in a sodium taurocholate-induced severe acute pancreatitis in rat model. J Dig Dis 2014; 15:386-93. [PMID: 24690434 DOI: 10.1111/1751-2980.12148] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVE The aims of this study were to clarify the kinetics of intestinal barrier function impairment in sodium taurocholate-induced severe acute pancreatitis (SAP) models and to explore an appropriate concentration of sodium taurocholate and a suitable time point for further study. METHODS In total, 104 rats were randomly divided into four groups: the normal control group (n = 8) receiving no treatment, the sham-operation group (n = 32), the 2.5% and 5% sodium taurocholate-treated SAP groups (n = 32 for each group) which were induced via a retrograde injection of 2.5% or 5% sodium taurocholate into the pancreatic duct. Histological examination, serum D-lactate and endotoxin levels and the incidence of bacteria translocation were recorded to assess the intestinal mucosal injury. RESULTS Pancreatitis models were successfully established in both the 2.5% and 5% sodium taurocholate-treated groups. The dosage of sodium taurocholate used to induce pancreatitis was positively correlated with the degree of intestinal mucosal injury. The most severe damage to intestinal barrier was observed 24 h after surgery in the 2.5% sodium taurocholate-treated group and 48 h after surgery in the 5% sodium taurocholate-treated group, respectively. CONCLUSION Based on the success rate of the model, the mortality and the impairment of intestinal barrier function, we conclude that 24 h after a retrograde injection of 2.5% sodium taurocholate may be the most appropriate time point to study intestinal barrier injury in SAP rats.
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Affiliation(s)
- Hong Yin Liang
- People's Liberation Army Center of General Surgery, General Hospital of Chengdu Military Region of the People's Liberation Army, Chengdu, Sichuan Province, China
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Zhang JX, Wang K, Mao ZF, Fan X, Jiang DL, Chen M, Cui L, Sun K, Dang SC. Application of liposomes in drug development--focus on gastroenterological targets. Int J Nanomedicine 2013; 8:1325-34. [PMID: 23630417 PMCID: PMC3623572 DOI: 10.2147/ijn.s42153] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Over the past decade, liposomes became a focal point in developing drug delivery systems. New liposomes, with novel lipid molecules or conjugates, and new formulations opened possibilities for safely and efficiently treating many diseases including cancers. New types of liposomes can prolong circulation time or specifically deliver drugs to therapeutic targets. This article concentrates on current developments in liposome based drug delivery systems for treating diseases of the gastrointestinal tract. We will review different types and uses of liposomes in the development of therapeutics for gastrointestinal diseases including inflammatory bowel diseases and colorectal cancer.
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Affiliation(s)
- Jian-Xin Zhang
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Kun Wang
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Zheng-Fa Mao
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Xin Fan
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - De-Li Jiang
- School of Chemistry and Chemical Engineering of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Min Chen
- School of Chemistry and Chemical Engineering of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Lei Cui
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Kang Sun
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
| | - Sheng-Chun Dang
- Department of General Surgery, the Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People’s Republic of China
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Dang S, Shen Y, Yin K, Zhang J. TREM-1 Promotes Pancreatitis-Associated Intestinal Barrier Dysfunction. Gastroenterol Res Pract 2012; 2012:720865. [PMID: 22611379 PMCID: PMC3352574 DOI: 10.1155/2012/720865] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2011] [Revised: 01/30/2012] [Accepted: 02/15/2012] [Indexed: 12/19/2022] Open
Abstract
Severe acute pancreatitis (SAP) can cause intestinal barrier dysfunction (IBD), which significantly increases the disease severity and risk of mortality. We hypothesized that the innate immunity- and inflammatory-related protein-triggering receptor expressed on myeloid cells-1 (TREM-1) contributes to this complication of SAP. Thus, we investigated the effect of TREM-1 pathway modulation on a rat model of pancreatitis-associated IBD. In this study we sought to clarify the role of TREM-1 in the pathophysiology of intestinal barrier dysfunction in SAP. Specifically, we evaluated levels of serum TREM-1 and membrane-bound TREM-1 in the intestine and pancreas from an animal model of experimentally induced SAP. TREM-1 pathway blockade by LP17 treatment may suppress pancreatitis-associated IBD and ameliorate the damage to the intestinal mucosa barrier.
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Affiliation(s)
- Shengchun Dang
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
| | - Yao Shen
- School of Clinical Medicine, Jiangsu University, Zhenjiang 212013, China
| | - Kai Yin
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
| | - Jianxin Zhang
- Department of General Surgery, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, China
- *Jianxin Zhang:
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