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Du F, Xie Y, Wu S, Ji M, Dong B, Zhu C. Expression and Targeted Application of Claudins Family in Hepatobiliary and Pancreatic Diseases. J Hepatocell Carcinoma 2024; 11:1801-1821. [PMID: 39345937 PMCID: PMC11439345 DOI: 10.2147/jhc.s483861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2024] [Accepted: 09/12/2024] [Indexed: 10/01/2024] Open
Abstract
Hepatobiliary and pancreatic diseases are becoming increasingly common worldwide and associated cancers are prone to recurrence and metastasis. For a more accurate treatment, new therapeutic strategies are urgently needed. The claudins (CLDN) family comprises a class of membrane proteins that are the main components of tight junctions, and are essential for forming intercellular barriers and maintaining cellular polarity. In mammals, the claudin family contains at least 27 transmembrane proteins and plays a major role in mediating cell adhesion and paracellular permeability. Multiple claudin proteins are altered in various cancers, including gastric cancer (GC), esophageal cancer (EC), hepatocellular carcinoma (HCC), pancreatic cancer (PC), colorectal cancer (CRC) and breast cancer (BC). An increasing number of studies have shown that claudins are closely associated with the occurrence and development of hepatobiliary and pancreatic diseases. Interestingly, claudin proteins exhibit different effects on cancer progression in different tumor tissues, including tumor suppression and promotion. In addition, various claudin proteins are currently being studied as potential diagnostic and therapeutic targets, including claudin-3, claudin-4, claudin-18.2, etc. In this article, the functional phenotype, molecular mechanism, and targeted application of the claudin family in hepatobiliary and pancreatic diseases are reviewed, with an emphasis on claudin-1, claudin-4, claudin-7 and claudin-18.2, and the current situation and future prospects are proposed.
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Affiliation(s)
- Fangqian Du
- Department of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Yuwei Xie
- Department of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Shengze Wu
- Department of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Mengling Ji
- Department of Surgery, Institute of Biomedical Sciences, Tokushima University, Tokushima, Japan
| | - Bingzi Dong
- Department of Endocrinology and Metabolism, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
| | - Chengzhan Zhu
- Department of Hepatobiliary and Pancreatic Surgery, The Affiliated Hospital of Qingdao University, Qingdao, People's Republic of China
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Grover M, Vanuytsel T, Chang L. Intestinal Permeability in Disorders of Gut-Brain Interaction: From Bench to Bedside. Gastroenterology 2024:S0016-5085(24)05416-7. [PMID: 39236897 DOI: 10.1053/j.gastro.2024.08.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Revised: 06/27/2024] [Accepted: 08/20/2024] [Indexed: 09/07/2024]
Abstract
Intestinal barrier function lies at a critical interface of a range of peripheral and central processes that influence disorders of gut-brain interactions (DGBI). Although rigorously tested, the role of barrier dysfunction in driving clinical phenotype of DGBI remains to be fully elucidated. In vitro, in vivo, and ex vivo strategies can test various aspects of the broader permeability and barrier mechanisms in the gut. Luminal mediators of host, bacterial, and dietary origin can influence the barrier function and a disrupted barrier can also influence the luminal milieu. Critical to our understanding is how barrier dysfunction is influenced by stress and other comorbidities that associate with DGBI and the crosstalk between barrier and neural, hormonal, and immune responses. Additionally, the microbiome's significant role in the communication between the brain and gut has led to the integrative model of a microbiome gut-brain axis with reciprocal interactions between brain networks and networks composed of multiple cells in the gut, including immune cells, enterochromaffin cells, gut microbiota and the derived luminal mediators. This review highlights the techniques for assessment of barrier function, appraises evidence for barrier dysfunction in DGBI including mechanistic studies in humans, as well as provides an overview of therapeutic strategies that can be used to directly or indirectly restore barrier function in DGBI patients.
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Affiliation(s)
- Madhusudan Grover
- Division of Gastroenterology and Hepatology, Mayo Clinic, Rochester, Minnesota
| | - Tim Vanuytsel
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), KULeuven, Leuven, Belgium
| | - Lin Chang
- Vatche and Tamar Manoukian Division of Digestive Diseases, Department of Medicine, University of California, Los Angeles, California.
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Farcas RA, Almasri M, Grad S, Popa SL, Leucuta DC, Ismaiel A, Dumitrascu DL. Breaking Barriers in Functional Dyspepsia: A Systematic Review and Meta-analysis on Duodenal Tight Junction Protein Expression. J Neurogastroenterol Motil 2024; 30:281-289. [PMID: 38972865 PMCID: PMC11238099 DOI: 10.5056/jnm24013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/14/2024] [Accepted: 03/17/2024] [Indexed: 07/09/2024] Open
Abstract
Background/Aims Disruptions in tight junction (TJ) protein expression leading to duodenal epithelial barrier impairment may contribute to increased intestinal permeability, potentially playing a role in functional dyspepsia (FD) pathophysiology. Currently published studies evaluated the role of several TJ proteins in FD patients with inconsistent results. Therefore, we conducted this systematic review and metaanalysis to evaluate the duodenal mucosal expression of several TJ proteins in FD. Methods We performed a systematic electronic search on PubMed, EMBASE, and Scopus using predefined keywords. Diagnosis of FD by Rome III or Rome IV criteria was considered acceptable. Full articles satisfying our inclusion and exclusion criteria were included. The principal summary outcome was the mean difference of several TJ proteins in FD patients and control subjects. Results A total of 8 and 5 studies were included in our qualitative and quantitative synthesis, respectively, with a total population of 666 participants, out of which 420 were FD patients. No significant differences were observed between FD patients and controls in the expression of claudin-1 (-0.102 [95% CI, -0.303, 0.099]), claudin-2 (0.161 [95% CI, -0.134, 0.456)], claudin-3 (0.278 [95% CI, -0.280, 0.837]), claudin-4 (0.045 [95% CI, -0.264, 0.354]), ZO-1 (-0.221 [95% CI, -0.683, 0.241]), ZO-2 (-0.070 [95% CI, -0.147, 0.007]), ZO-3 (-0.129 [95% CI, -0.376, 0.118]), β-catenin (-0.135 [95% CI, -0.484, 0.214]), E-cadherin (-0.083 [95% CI, -0.229, 0.063]), and occludin (-0.158 [95% CI, -0.409, 0.093]). Conclusions The expressions of all evaluated proteins including claudin-1, claudin-2, claudin-3, claudin-4, ZO-1, ZO-2, ZO-3, β-catenin, E-cadherin, and occludin did not significantly differ between FD patients and controls. However, due to the limited number of included studies, results should be interpreted with caution.
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Affiliation(s)
- Radu A Farcas
- 2nd Department of Internal Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Malaz Almasri
- Dr Constantin Papilian Cluj Napoca Emergency Military Hospital, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj Napoca, Romania
| | - Simona Grad
- 2nd Department of Internal Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Stefan-Lucian Popa
- 2nd Department of Internal Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Daniel C Leucuta
- Department of Medical Informatics and Biostatistics, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Abdulrahman Ismaiel
- 2nd Department of Internal Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Dan L Dumitrascu
- 2nd Department of Internal Medicine, “Iuliu Hatieganu” University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Vaganova AN, Markina AA, Belousov AM, Lenskaia KV, Gainetdinov RR. Dopamine Receptors and TAAR1 Functional Interaction Patterns in the Duodenum Are Impaired in Gastrointestinal Disorders. Biomedicines 2024; 12:1590. [PMID: 39062162 PMCID: PMC11274761 DOI: 10.3390/biomedicines12071590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 06/20/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Currently, there is a growing amount of evidence for the involvement of dopamine receptors and the functionally related trace amine-associated receptor, TAAR1, in upper intestinal function. In the present study, we analyzed their expression in the duodenum using publicly accessible transcriptomic data. We revealed the expression of DRD1, DRD2, DRD4, DRD5, and TAAR1 genes in different available datasets. The results of the gene ontology (GO) enrichment analysis for DRD2 and especially TAAR1 co-expressed genes were consistent with the previously described localization of D2 and TAAR1 in enteric neurons and secretory cells, respectively. Considering that co-expressed genes are more likely to be involved in the same biological processes, we analyzed genes that are co-expressed with TAAR1, DRD2, DRD4, and DRD5 genes in healthy mucosa and duodenal samples from patients with functional dyspepsia (FD) or diabetes-associated gastrointestinal symptoms. Both pathological conditions showed a deregulation of co-expression patterns, with a high discrepancy between DRDs and TAAR1 co-expressed gene sets in normal tissues and patients' samples and a loss of these genes' functional similarity. Meanwhile, we discovered specific changes in co-expression patterns that may suggest the involvement of TAAR1 and D5 receptors in pathologic or compensatory processes in FD or diabetes accordingly. Despite our findings suggesting the possible role of TAAR1 and dopamine receptors in functional diseases of the upper intestine, underlying mechanisms need experimental exploration and validation.
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Affiliation(s)
- Anastasia N. Vaganova
- Institute of Translational Biomedicine, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia; (A.N.V.)
- St. Petersburg State University Hospital, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia;
| | - Alisa A. Markina
- Institute of Translational Biomedicine, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia; (A.N.V.)
| | - Aleksandr M. Belousov
- St. Petersburg State University Hospital, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia;
| | - Karina V. Lenskaia
- Department of Medicine, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia;
| | - Raul R. Gainetdinov
- Institute of Translational Biomedicine, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia; (A.N.V.)
- St. Petersburg State University Hospital, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 St. Petersburg, Russia;
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Ceulemans M, Huyghe P, De Hertogh G, Cameron R, Schol J, Burns GL, Keely S, Wauters L, Tack J, Talley NJ, Vanuytsel T. Redefining Histological Cell Counts Using a Standardized Method: The Leuven Intestinal Counting Protocol. Clin Transl Gastroenterol 2024; 15:e00725. [PMID: 38888240 PMCID: PMC11272351 DOI: 10.14309/ctg.0000000000000725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Accepted: 05/31/2024] [Indexed: 06/20/2024] Open
Abstract
INTRODUCTION The diagnosis of eosinophilic gastrointestinal diseases is largely based on mucosal eosinophil counts, but thresholds and normal ranges beyond the esophagus are debated, calling for much-needed methodological standardization. We aimed to develop a standardized workflow for duodenal cell quantification and estimate duodenal eosinophil and mast cell numbers in healthy controls. METHODS Software-based histological cell quantification using free-sized or fixed-sized regions was developed and applied to digitized hematoxylin and eosin (H&E)-stained slides from 58 individuals (healthy controls [HCs] and patients with functional dyspepsia). Intraclass correlation coefficients (ICCs) compared inter-rater reliability between software-based and microscopic quantification. Reproducibility of the software-based method was validated in an independent cohort of 37 control and functional dyspepsia subjects. Eosinophil identification on H&E staining was compared to immunohistochemistry (IHC). Normal eosinophil (H&E) and mast cell (cKit) ranges were determined in 70 adult HCs. RESULTS Eosinophil quantification on digitized slides demonstrated excellent (ICC = 0.909) and significantly improved reproducibility over microscopic evaluation (ICC = 0.796, P = 0.0014), validated in an independent cohort (ICC = 0.910). Duodenal eosinophils were more abundant around crypts than in villi ( P < 0.0001), while counts were similar on matched H&E- and IHC-stained slides ( P = 0.55). Mean ± SD (95th percentile) duodenal eosinophils and mast cells in HC were 228.8/mm 2 ± 94.7 (402.8/mm 2 ) and 419.5/mm 2 ± 132.2 (707.6/mm 2 ), respectively. DISCUSSION We developed and validated a standardized approach to duodenal histological cell quantification, generalizable to various mucosal cell types. Implementation of software-based quantification identified 400 eosinophils/mm 2 and 700 mast cells/mm 2 as thresholds for abnormal duodenal infiltration.
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Affiliation(s)
- Matthias Ceulemans
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), Katholieke Universiteit Leuven, Leuven, Belgium
| | - Pauline Huyghe
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), Katholieke Universiteit Leuven, Leuven, Belgium
| | - Gert De Hertogh
- Laboratory of Translational Cell & Tissue Research, Department of Imaging & Pathology, Katholieke Universiteit Leuven, Leuven, Belgium
| | - Raquel Cameron
- College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, Australia
- National Health and Medical Research Council Centre for Research Excellence in Digestive Health, Newcastle, Australia
- Immune Health Research Program, Hunter Medical Research Institute, Newcastle, Australia; and
| | - Jolien Schol
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), Katholieke Universiteit Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
| | - Grace L. Burns
- College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, Australia
- National Health and Medical Research Council Centre for Research Excellence in Digestive Health, Newcastle, Australia
- Immune Health Research Program, Hunter Medical Research Institute, Newcastle, Australia; and
| | - Simon Keely
- College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, Australia
- National Health and Medical Research Council Centre for Research Excellence in Digestive Health, Newcastle, Australia
- Immune Health Research Program, Hunter Medical Research Institute, Newcastle, Australia; and
| | - Lucas Wauters
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), Katholieke Universiteit Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
| | - Jan Tack
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), Katholieke Universiteit Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
| | - Nicholas J. Talley
- College of Health, Medicine and Wellbeing, University of Newcastle, Newcastle, Australia
- National Health and Medical Research Council Centre for Research Excellence in Digestive Health, Newcastle, Australia
- Immune Health Research Program, Hunter Medical Research Institute, Newcastle, Australia; and
| | - Tim Vanuytsel
- Translational Research Center for Gastrointestinal Disorders (TARGID), Department of Chronic Diseases and Metabolism (ChroMeta), Katholieke Universiteit Leuven, Leuven, Belgium
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium
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Sun J, Gou J, Qin L, Liu T, Huang Y, Lu Y, Wang Y, Liu C, Li Y. Screening of anti-functional dyspepsia compounds in Cynanchum auriculatum: A spectrum-effect relationship analysis, and ATP-binding cassette transporters inhibitor evaluation. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:116867. [PMID: 37390880 DOI: 10.1016/j.jep.2023.116867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/07/2023] [Accepted: 06/27/2023] [Indexed: 07/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Functional dyspepsia (FD) is a disorder caused by abnormal gut-brain axis regulation and is highly prevalent in China. Cynanchum auriculatum (CA) is often used to treat FD in the ethnic minority areas of Guizhou. Although several CA-based products are currently available in the market, it is unclear which components of CA are efficacious and what their oral absorption mechanism is. AIM OF THE STUDY This study aimed to screen anti-FD components of CA based on the spectrum-effect relationship. In addition, the study evaluated the intestinal absorption mechanism of these components using transporter inhibitors. MATERIALS AND METHODS The fingerprinting of compounds from CA extract and plasma after oral administration was conducted using ultra-high-performance liquid chromatography quadrupole-time-of-flight tandem mass spectrometry (UHPLC-Q-TOF-MS). The intestinal contractile parameters were then measured in vitro using the BL-420F Biofunctional Experiment System. Multivariate statistical analysis of the result of spectrum-effect relationship assessment was used to elucidate the correlation between prominent peaks of CA-containing plasma and intestinal contractile activity. The effect of ATP-binding cassette (ABC) transporter inhibitors, such as the P-gp inhibitor verapamil, the MRR inhibitor indomethacin, and the BCRP inhibitor Ko143, on the directional transport of the predicted active ingredients was assessed in vivo. RESULTS Twenty chromatographic peaks were identified in the CA extract. Of these, three were C21 steroids, four were organic acids, and one was a coumarin, and acetophenone by comparing with reference compounds. Additionally, it is discovered that there are totally 39 migratory components in CA-containing plasma, which was found to significantly promote the contractility of the isolated duodenum. Moreover, multivariate analysis of the spectrum-effect relationship demonstrated that 16 characteristic peaks (3, 6, 8, 10, 11, 13, 14, 18, 21, m1-m4, m7, m15, and m24) in CA-containing plasma were significantly associated with the anti-FD effect. These compounds included seven prototype compounds, i.e., cynanoneside A, syringic acid, deacylmetaplexigenin, ferulic acid, scopoletin, baishouwubenzophenone, and qingyangshengenin. The inhibition of ABC transporters demonstrated that the inhibitors verapamil and Ko143 significantly increased (P < 0.05) the uptake of scopoletin and qingyangshengenin. Thus, these compounds may be substrates for P-gp and BCRP. CONCLUSIONS The potential anti-FD components of CA and the effect of ABC transporter inhibitors on these active components were preliminarily clarified. These findings lay a foundation for subsequent in vivo studies.
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Affiliation(s)
- Jia Sun
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China; School of Pharmacy, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550004, China.
| | - Jian Gou
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China; School of Pharmacy, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550004, China
| | - Lan Qin
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China; School of Pharmacy, Guizhou Medical University, No.9, Beijing Road, Yunyan District, Guiyang, 550004, China
| | - Ting Liu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China
| | - Yong Huang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China
| | - Yuan Lu
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China
| | - Yonglin Wang
- State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University, Guiyang, 550004, China
| | - Chunhua Liu
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China.
| | - Yongjun Li
- Engineering Research Center for the Development and Application of Ethnic Medicine and TCM (Ministry of Education), Guizhou Medical University, Guiyang, 550004, China.
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Kovaleva A, Poluektova E, Maslennikov R, Karchevskaya A, Shifrin O, Kiryukhin A, Tertychnyy A, Kovalev L, Kovaleva M, Lobanova O, Kudryavtseva A, Krasnov G, Fedorova M, Ivashkin V. Effect of Rebamipide on the Intestinal Barrier, Gut Microbiota Structure and Function, and Symptom Severity Associated with Irritable Bowel Syndrome and Functional Dyspepsia Overlap: A Randomized Controlled Trial. J Clin Med 2023; 12:6064. [PMID: 37763004 PMCID: PMC10531936 DOI: 10.3390/jcm12186064] [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: 07/27/2023] [Revised: 08/30/2023] [Accepted: 09/17/2023] [Indexed: 09/29/2023] Open
Abstract
Treatment of functional digestive disorders is not always effective. Therefore, a search for new application points for potential drugs is perspective. Our aim is to evaluate the effect of rebamipide on symptom severity, intestinal barrier status, and intestinal microbiota composition and function in patients with diarrheal variant of irritable bowel syndrome overlapping with functional dyspepsia (D-IBSoFD). Sixty patients were randomized to receive trimebutine (TRI group), trimebutine + rebamipide (T + R group), or rebamipide (REB group) for 2 months. At the beginning and end of the study, patients were assessed for general health (SF-36), severity of digestive symptoms (Gastrointestinal Symptom Rating and 7 × 7 scales), state of the intestinal barrier, and composition (16S rRNA gene sequencing) and function (short-chain fatty acid fecal content) of the gut microbiota. The severity of most digestive symptoms was reduced in the REB and T + R groups to levels similar to that observed in the TRI group. The duodenal and sigmoidal lymphocytic and sigmoidal eosinophilic infiltration was decreased only in the REB and T + R groups, not in the TRI group. Serum zonulin levels were significantly decreased only in the REB group. A decrease in intraepithelial lymphocytic infiltration in the duodenum correlated with a decrease in the severity of rumbling and flatulence, while a decrease in infiltration within the sigmoid colon correlated with improved stool consistency and decreased severity of the sensation of incomplete bowel emptying. In conclusion, rebamipide improves the intestinal barrier condition and symptoms in D-IBSoFD. The rebamipide effects are not inferior to those of trimebutine.
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Affiliation(s)
- Aleksandra Kovaleva
- Department of Introduction to Internal Diseases, Gastroenterology and Hepatology, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia; (A.K.); (E.P.)
| | - Elena Poluektova
- Department of Introduction to Internal Diseases, Gastroenterology and Hepatology, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia; (A.K.); (E.P.)
- The Scientific Community for Human Microbiome Research, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia
| | - Roman Maslennikov
- Department of Introduction to Internal Diseases, Gastroenterology and Hepatology, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia; (A.K.); (E.P.)
- The Scientific Community for Human Microbiome Research, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia
| | - Anna Karchevskaya
- Department of Introduction to Internal Diseases, Gastroenterology and Hepatology, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia; (A.K.); (E.P.)
- Laboratory of General and Clinical Neurophysiology, Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 5A Butlerova Str., 117485 Moscow, Russia
- N.N. Burdenko National Medical Research Center of Neurosurgery, 16, 4th Tverskaya-Yamskaya St., 125047 Moscow, Russia
| | - Oleg Shifrin
- Department of Introduction to Internal Diseases, Gastroenterology and Hepatology, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia; (A.K.); (E.P.)
| | - Andrey Kiryukhin
- Endoscopy Unit, The Second University Clinic, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia
| | - Aleksandr Tertychnyy
- Institute of Clinical Morphology and Digital Pathology, Sechenov University, Trubetskaya Str., 8, Bld. 2, 119048 Moscow, Russia; (A.T.)
| | - Leonid Kovalev
- Laboratory of Structural Biochemistry of Protein, A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Leninsky Prospekt, 33, Bld. 2, 119071 Moscow, Russia
| | - Marina Kovaleva
- Laboratory of Structural Biochemistry of Protein, A.N. Bach Institute of Biochemistry, Research Center of Biotechnology, Russian Academy of Sciences, Leninsky Prospekt, 33, Bld. 2, 119071 Moscow, Russia
| | - Olga Lobanova
- Institute of Clinical Morphology and Digital Pathology, Sechenov University, Trubetskaya Str., 8, Bld. 2, 119048 Moscow, Russia; (A.T.)
| | - Anna Kudryavtseva
- Laboratory of Postgenomic Research, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str., 32, Bld. 1, 119991 Moscow, Russia
| | - George Krasnov
- Laboratory of Postgenomic Research, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str., 32, Bld. 1, 119991 Moscow, Russia
| | - Maria Fedorova
- Laboratory of Postgenomic Research, Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Vavilova Str., 32, Bld. 1, 119991 Moscow, Russia
| | - Vladimir Ivashkin
- Department of Introduction to Internal Diseases, Gastroenterology and Hepatology, Sechenov University, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia; (A.K.); (E.P.)
- The Scientific Community for Human Microbiome Research, Pogodinskaya Str., 1, Bld. 1, 119435 Moscow, Russia
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Wang Z, Hao M, Wu L, He Y, Sun X. Mast cells disrupt the duodenal mucosal integrity: Implications for the mechanisms of barrier dysfunction in functional dyspepsia. Scand J Gastroenterol 2022; 58:460-470. [PMID: 36345966 DOI: 10.1080/00365521.2022.2141075] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
BACKGROUND Functional dyspepsia (FD) is a common functional gastrointestinal (GI) disorder, but its pathophysiology is poorly understood. Mast cells (MCs) may play a critical role in the development of FD. Therefore, the aim of this study was to investigate the effect of MCs on barrier function, tight junction (TJ) proteins and related signaling pathways. METHODS The expression of the TJ proteins claudin-8, ZO-1 and occludin in biopsy tissues from seven FD patients and five controls was assessed. Based on the in vivo results, we further investigated the effect of (1) MC degranulation in a coculture model of Caco-2/RBL-2H3 cells and tryptase in Caco-2 monolayers, (2) MC degranulation in the presence or absence of a PAR-2 antagonist and (3) MC degranulation in the presence or absence of an ERK1/2 signaling pathway inhibitor. The epithelial integrity of Caco-2 cell monolayers was assessed by measuring the transepithelial electrical resistance (TEER). The expression of TJ proteins was evaluated by western blotting, QT-PCR and immunostaining. RESULTS Epithelial claudin-8, ZO-1 and occludin protein expression were significantly reduced in tissues from FD patients compared with controls. MC degranulation and tryptase decreased the TEER and reduced the expression of TJ proteins in Caco-2 cell monolayers. A PAR-2 antagonist and an ERK1/2 signaling pathway inhibitor significantly reduced the effect of MC degranulation on the TEER and TJ protein expression in Caco-2 cell monolayers. CONCLUSIONS MCs disrupt duodenal barrier function by modulating the levels of TJ proteins, and the PAR-2 and ERK1/2 signaling pathways may mediate the pathogenesis of FD.
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Affiliation(s)
- Zhiming Wang
- School of Medicine, Southwest Jiaotong University, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, PR China
| | - Menghao Hao
- School of Medicine, Southwest Jiaotong University, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, PR China
| | - Liping Wu
- School of Medicine, Southwest Jiaotong University, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, PR China.,Department of Gastroenterology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, PR China
| | - Yumei He
- North Sichuan Medical College, Nanchong, PR China
| | - Xiaobin Sun
- Department of Gastroenterology, The Third People's Hospital of Chengdu, The Affiliated Hospital of Southwest Jiaotong University, Chengdu, PR China
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Wauters L, Ceulemans M, Vanuytsel T. Duodenal Barrier and Inflammation in Dyspepsia: God is in the Details. Clin Gastroenterol Hepatol 2022; 20:2411-2413. [PMID: 34785357 DOI: 10.1016/j.cgh.2021.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 02/07/2023]
Affiliation(s)
- Lucas Wauters
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium; Translational Research in Gastrointestinal Disorders, KU Leuven, Leuven, Belgium
| | - Matthias Ceulemans
- Translational Research in Gastrointestinal Disorders, KU Leuven, Leuven, Belgium
| | - Tim Vanuytsel
- Department of Gastroenterology and Hepatology, University Hospitals Leuven, Leuven, Belgium; Translational Research in Gastrointestinal Disorders, KU Leuven, Leuven, Belgium
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Eosinophils in the Gastrointestinal Tract: Key Contributors to Neuro-Immune Crosstalk and Potential Implications in Disorders of Brain-Gut Interaction. Cells 2022; 11:cells11101644. [PMID: 35626681 PMCID: PMC9139532 DOI: 10.3390/cells11101644] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/10/2022] [Accepted: 05/11/2022] [Indexed: 02/07/2023] Open
Abstract
Eosinophils are innate immune granulocytes actively involved in defensive responses and in local and systemic inflammatory processes. Beyond these effector roles, eosinophils are fundamental to maintaining homeostasis in the tissues they reside. Gastrointestinal eosinophils modulate barrier function and mucosal immunity and promote tissue development through their direct communication with almost every cellular component. This is possible thanks to the variety of receptors they express and the bioactive molecules they store and release, including cytotoxic proteins, cytokines, growth factors, and neuropeptides and neurotrophines. A growing body of evidence points to the eosinophil as a key neuro-immune player in the regulation of gastrointestinal function, with potential implications in pathophysiological processes. Eosinophil–neuron interactions are facilitated by chemotaxis and adhesion molecules, and the mediators released may have excitatory or inhibitory effects on each cell type, with physiological consequences dependent on the type of innervation involved. Of special interest are the disorders of the brain–gut interaction (DBGIs), mainly functional dyspepsia (FD) and irritable bowel syndrome (IBS), in which mucosal eosinophilia and eosinophil activation have been identified. In this review, we summarize the main roles of gastrointestinal eosinophils in supporting gut homeostasis and the evidence available on eosinophil–neuron interactions to bring new insights that support the fundamental role of this neuro-immune crosstalk in maintaining gut health and contributing to the pathophysiology of DBGIs.
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Greuter T, Straumann A, Fernandez‐Marrero Y, Germic N, Hosseini A, Yousefi S, Simon D, Collins MH, Bussmann C, Chehade M, Dellon ES, Furuta GT, Gonsalves N, Hirano I, Moawad FJ, Biedermann L, Safroneeva E, Schoepfer AM, Simon H. Characterization of eosinophilic esophagitis variants by clinical, histological, and molecular analyses: A cross-sectional multi-center study. Allergy 2022; 77:2520-2533. [PMID: 35094416 PMCID: PMC9545458 DOI: 10.1111/all.15233] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/29/2021] [Accepted: 12/31/2021] [Indexed: 12/20/2022]
Abstract
OBJECTIVE Physicians are increasingly confronted with patients presenting with symptoms of esophageal dysfunction resembling eosinophilic esophagitis (EoE), but absence of significant esophageal eosinophilia. The purpose of this study was to characterize and classify this group of EoE variants. DESIGN Patients from six EoE-centers with symptoms of esophageal dysfunction, but peak eosinophil counts of <60/mm2 (<15/hpf) in esophageal biopsies and absence of gastro-esophageal reflux disease (GERD) were included. Clinical, endoscopic, (immuno)-histological, and molecular features were determined and compared with EoE, GERD, and healthy controls. RESULTS We included 69 patients with EoE variants. Endoscopic abnormalities were found in 53.6%. We identified three histological subtypes: EoE-like esophagitis (36/69, 52.2%), lymphocytic esophagitis (14/69, 20.3%), and non-specific esophagitis (19/69, 27.5%). Immunohistochemistry revealed-in contrast to EoE-no significant increase in inflammatory cell infiltrates compared with GERD and healthy controls, except for lymphocytes in lymphocytic esophagitis. EoE-typical Th2-response was absent in all EoE variants. However, considerable structural changes were detected based on histology and protein expression. Using next generation mRNA sequencing, we found the three EoE variants to have distinct molecular fingerprints partially sharing pronounced traits of EoE. Hierarchical sample clustering of RNA sequencing data confirmed the presence of an EoE-like (characterized by eotaxin-3 expression), non-specific, and lymphocytic variant cluster (characterized by CD3 cells and TSLP expression). CONCLUSION All EoE variants are clinically and histologically active conditions despite the absence of esophageal eosinophilia. EoE variants appear to be part of a disease spectrum, where classical EoE represents the most common and apparent phenotype.
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Affiliation(s)
- Thomas Greuter
- Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
- Division of Gastroenterology and Hepatology University Hospital Lausanne – Centre Hopitalier Universitaire Vaudois (CHUV) Lausanne Switzerland
| | - Alex Straumann
- Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
| | | | - Nina Germic
- Institute of Pharmacology University of Bern Bern Switzerland
| | - Aref Hosseini
- Institute of Pharmacology University of Bern Bern Switzerland
| | - Shida Yousefi
- Institute of Pharmacology University of Bern Bern Switzerland
| | - Dagmar Simon
- Department of Dermatology, Inselspital Bern University Hospital University of Bern Bern Switzerland
| | - Margaret H. Collins
- Division of Pathology Cincinnati Children`s Hospital Medical Center Cincinnati Ohio USA
| | | | - Mirna Chehade
- Mount Sinai Center for Eosinophilic Disorders Icahn School of Medicine at Mount Sinai New York New York USA
| | - Evan S. Dellon
- Division of Gastroenterology and Hepatology UNC Hospital Chapel Hill North Carolina USA
| | - Glenn T. Furuta
- Department of Pediatrics Gastrointestinal Eosinophilic Diseases Program Digestive Health Institute Children’s Hospital Colorado University of Colorado School of Medicine Aurora Colorado USA
| | - Nirmala Gonsalves
- Division of Gastroenterology and Hepatology Northwestern University Chicago Illinois USA
| | - Ikuo Hirano
- Division of Gastroenterology and Hepatology Northwestern University Chicago Illinois USA
| | - Fouad J. Moawad
- Division of Gastroenterology Scripps Clinic La Jolla California USA
| | - Luc Biedermann
- Department of Gastroenterology and Hepatology University Hospital Zurich Zurich Switzerland
| | | | - Alain M. Schoepfer
- Division of Gastroenterology and Hepatology University Hospital Lausanne – Centre Hopitalier Universitaire Vaudois (CHUV) Lausanne Switzerland
| | - Hans‐Uwe Simon
- Institute of Pharmacology University of Bern Bern Switzerland
- Institute of Biochemistry Brandenburg Medical School Neuruppin Germany
- Department of Clinical Immunology and Allergology Sechenov University Moscow Russia
- Laboratory of Molecular Immunology Institute of Fundamental Medicine and Biology Kazan Federal University Kazan Russia
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MORPHOMETRIC ANALYSIS OF THE STRUCTURAL COMPONENTS OF THE DUODENAL WALL IN SIMULATED PANCREATITIS. WORLD OF MEDICINE AND BIOLOGY 2022. [DOI: 10.26724/2079-8334-2022-4-82-252-255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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