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Zhang X, Tang X, Xu J, Zheng Y, Lin J, Zou H. Transcriptome analysis reveals dysfunction of the endoplasmic reticulum protein processing in the sonic muscle of small yellow croaker (Larimichthys polyactis) following noise exposure. MARINE ENVIRONMENTAL RESEARCH 2024; 194:106299. [PMID: 38154196 DOI: 10.1016/j.marenvres.2023.106299] [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: 07/16/2023] [Revised: 10/25/2023] [Accepted: 12/05/2023] [Indexed: 12/30/2023]
Abstract
Noise pollution is increasingly prevalent in aquatic ecosystems, causing detrimental effects on growth and behavior of marine fishes. The physiological responses of fish to underwater noise are poorly understood. In this study, we used RNA-sequencing (RNA-seq) to study the transcriptome of the sonic muscle in small yellow croaker (Larimichthys polyactis) after exposure to a 120 dB noise for 30 min. The behavioral experiment revealed that noise exposure resulted in accelerated tail swimming behavior at the beginning of the exposure period, followed by loss of balance at the end of experiment. Transcriptomic analysis found that most highly expressed genes in the sonic muscle, including parvalbumin, slc25a4, and troponin C were related with energy metabolism and locomotor function. Further, a total of 1261 differentially expressed genes (DEGs) were identified, including 284 up-regulated and 977 down-regulated genes in the noise exposure group compared with the control group. Gene ontology (GO) analysis indicated that the most enriched categories of DEGs included protein folding and response to unfolding protein. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis found over-represented pathways including protein processing in the endoplasmic reticulum, chaperones and folding catalysts, as well as arginine and proline metabolism. Specifically, many genes related to fatty acid and collagen metabolism were up-regulated in the noise exposure group. Taken together, our results indicate that exposure to noise stressors alters the swimming behavior of croaker, inducing endoplasmic reticulum stress, disrupting lipid metabolism, and causing collagen degradation in the sonic muscle of L. polyactis.
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Affiliation(s)
- Xuguang Zhang
- Engineering Technology Research Center of Marine Ranching, College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China
| | - Xianming Tang
- Hainan Provincial Key Laboratory of Tropical Maricultural Technology, Hainan Academy of Ocean and Fisheries Sciences, Haikou, Hainan, 571126, China
| | - Jianan Xu
- Shanghai Aquatic Wildlife Conservation Research Center, Shanghai, 200003, China
| | - Yueping Zheng
- Shanghai Aquatic Wildlife Conservation Research Center, Shanghai, 200003, China
| | - Jun Lin
- Engineering Technology Research Center of Marine Ranching, College of Marine Ecology and Environment, Shanghai Ocean University, Shanghai, 201306, China.
| | - Huafeng Zou
- Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, 201306, China; National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, 201306, China.
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Du LW, Xu BQ, Xun K, Zhang FQ. Glutamine supplementation attenuates intestinal apoptosis by inducing heat shock protein 70 in heatstroke rats. World J Emerg Med 2023; 14:37-43. [PMID: 36713336 PMCID: PMC9842468 DOI: 10.5847/wjem.j.1920-8642.2023.011] [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: 08/06/2022] [Accepted: 11/18/2022] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Heatstroke is the most hazardous heat-related illness and has a high fatality rate. We investigated whether glutamine supplementation could have a protective effect on heatstroke rats. METHODS Twenty-five 12-week-old male Wistar rats (weight 305±16 g) were randomly divided into a control group (n=5), heatstroke (HS) group (n=10), and heatstroke+glutamine (HSG) group (n=10). Seven days before heat exposure, glutamine (0.4 g/[kg·d]) was administered to the rats in the HSG group by gavage every day. Three hours after heat exposure, serum samples were collected to detect white blood cells, coagulation indicators, blood biochemical indicators, and inflammatory cytokines in the rats. The small intestine tissue was stained to analyze pathological structural changes and apoptosis. Finally, immunohistochemistry and Western blotting were used to analyze the expression levels of heat shock protein 70 (HSP70). Multiple comparisons were analyzed by using one-way analysis of variance, and the Bonferroni test was conducted for the post hoc comparisons. RESULTS After heat exposure, the core temperature of the HS group (40.65±0.31 °C) was higher than the criterion of heatstroke, whereas the core temperature of the HSG group (39.45±0.14 °C) was lower than the criterion. Glutamine supplementation restored the increased white blood cells, coagulation indicators, blood biochemical indicators, and inflammatory cytokines that were induced by heatstroke to normal levels. The intestinal mucosa was injured, and the structure of tight junctions was damaged in the HS group; however, the structure of intestinal mucosal epithelial cells was stable in the HSG group. Glutamine supplementation alleviated intestinal apoptosis and up-regulated HSP70 expression. CONCLUSION Glutamine supplementation may alleviate intestinal apoptosis by inducing the expression of HSP70 and have a protective effect on heatstroke rats.
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Affiliation(s)
- Li-wen Du
- Department of Emergency, Ningbo No. 2 Hospital, Ningbo 315000, China
| | - Bao-qing Xu
- Department of Pathology, the 900 Hospital of Joint Logistics Support Force of Chinese PLA, Fuzhou 350025, China
| | - Kai Xun
- Department of Emergency, Ningbo No. 2 Hospital, Ningbo 315000, China
| | - Fang-qi Zhang
- Department of Pulmonary and Critical Care Medicine, the 987 Hospital of Joint Logistics Support Force of Chinese PLA, Baoji 721000, China,Corresponding Author: Fang-qi Zhang,
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Hussain Z, Park H. Inflammation and Impaired Gut Physiology in Post-operative Ileus: Mechanisms and the Treatment Options. J Neurogastroenterol Motil 2022; 28:517-530. [PMID: 36250359 PMCID: PMC9577567 DOI: 10.5056/jnm22100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/08/2022] [Accepted: 08/31/2022] [Indexed: 11/20/2022] Open
Abstract
Post-operative ileus (POI) is the transient cessation of coordinated gastrointestinal motility after abdominal surgical intervention. It decreases quality of life, prolongs length of hospital stay, and increases socioeconomic costs. The mechanism of POI is complex and multifactorial, and has been broadly categorized into neurogenic and inflammatory phase. Neurogenic phase mediated release of corticotropin-releasing factor (CRF) plays a central role in neuroinflammation, and affects both central autonomic response as well hypothalamic-pituitary-adrenal (HPA) axis. HPA-stress axis associated cortisol release adversely affects gut microbiota and permeability. Peripheral CRF (pCRF) is a key player in stress induced gastric emptying and colonic transit. It functions as a local effector and interacts with the CRF receptors on the mast cell to release chemical mediators of inflammation. Mast cells proteases disrupt epithelial barrier via protease activated receptor-2 (PAR-2). PAR-2 facilitates cytoskeleton contraction to reorient tight junction proteins such as occludin, claudins, junctional adhesion molecule, and zonula occludens-1 to open epithelial barrier junctions. Barrier opening affects the selectivity, and hence permeation of luminal antigens and solutes in the gastrointestinal tract. Translocation of luminal antigens perturbs mucosal immune system to further exacerbate inflammation. Stress induced dysbiosis and decrease in production of short chain fatty acids add to the inflammatory response and barrier disintegration. This review discusses potential mechanisms and factors involved in the pathophysiology of POI with special reference to inflammation and interlinked events such as epithelial barrier dysfunction and dysbiosis. Based on this review, we recommend CRF, mast cells, macrophages, and microbiota could be targeted concurrently for efficient POI management.
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Affiliation(s)
- Zahid Hussain
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
| | - Hyojin Park
- Department of Internal Medicine, Yonsei University College of Medicine, Seoul, Korea
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Teng M, Zhao X, Wang C, Wang C, White JC, Zhao W, Zhou L, Duan M, Wu F. Polystyrene Nanoplastics Toxicity to Zebrafish: Dysregulation of the Brain-Intestine-Microbiota Axis. ACS NANO 2022; 16:8190-8204. [PMID: 35507640 DOI: 10.1021/acsnano.2c01872] [Citation(s) in RCA: 70] [Impact Index Per Article: 35.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In animal species, the brain-gut axis is a complex bidirectional network between the gastrointestinal (GI) tract and the central nervous system (CNS) consisting of numerous microbial, immune, neuronal, and hormonal pathways that profoundly impact organism development and health. Although nanoplastics (NPs) have been shown to cause intestinal and neural toxicity in fish, the role of the neurotransmitter and intestinal microbiota interactions in the underlying mechanism of toxicity, particularly at environmentally relevant contaminant concentrations, remains unknown. Here, the effect of 44 nm polystyrene nanoplastics (PS-NPs) on the brain-intestine-microbe axis and embryo-larval development in zebrafish (Danio rerio) was investigated. Exposure to 1, 10, and 100 μg/L PS-NPs for 30 days inhibited growth and adversely affected inflammatory responses and intestinal permeability. Targeted metabolomics analysis revealed an alteration of 42 metabolites involved in neurotransmission. The content of 3,4-dihydroxyphenylacetic acid (DOPAC; dopamine metabolite formed by monoamine oxidase activity) was significantly decreased in a dose-dependent manner after PS-NP exposure. Changes in the 14 metabolites correlated with changes to 3 microbial groups, including Proteobacteria, Firmicutes, and Bacteroidetes, as compared to the control group. A significant relationship between Firmicutes and homovanillic acid (0.466, Pearson correlation coefficient) was evident. Eight altered metabolites (l-glutamine (Gln), 5-hydroxyindoleacetic acid (5-HIAA), serotonin, 5-hydroxytryptophan (5-HTP), l-cysteine (Cys), l-glutamic acid (Glu), norepinephrine (NE), and l-tryptophan (l-Trp)) had a negative relationship with Proteobacteria although histamine (His) and acetylcholine chloride (ACh chloride) levels were positively correlated with Proteobacteria. An Associated Network analysis showed that Firmicutes and Bacteroidetes were highly correlated (0.969). Furthermore, PS-NPs accumulated in the gastrointestinal tract of offspring and impaired development of F1 (2 h post-fertilization) embryos, including reduced spontaneous movements, hatching rate, and length. This demonstration of transgenerational deficits is of particular concern. These findings suggest that PS-NPs cause intestinal inflammation, growth inhibition, and restricted development of zebrafish, which are strongly linked to the disrupted regulation within the brain-intestine-microbiota axis. Our study provides insights into how xenobiotics can disrupt the regulation of brain-intestine-microbiota and suggests that these end points should be taken into account when assessing environmental health risks of PS-NPs to aquatic organisms.
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Affiliation(s)
- Miaomiao Teng
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Xiaoli Zhao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Chengju Wang
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Chen Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Jason C White
- The Connecticut Agricultural Experiment Station, New Haven, Connecticut 06511, United States
| | - Wentian Zhao
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Lingfeng Zhou
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
| | - Manman Duan
- Innovation Center of Pesticide Research, Department of Applied Chemistry, College of Science, China Agricultural University, Beijing 100193, China
| | - Fengchang Wu
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
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Martínez-Paredes E, Nicodemus N, Pascual JJ, García J. Challenges in rabbit doe feeding, including the young doe. WORLD RABBIT SCIENCE 2022. [DOI: 10.4995/wrs.2022.15562] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
In this review is summarized the last knowledge on rabbit doe nutrition, to complement the current nutritional requirements and strategies for the young and adult rabbit does, considering the production, health, and welfare issues. The rabbit doe must reach an adequate maturity level (body condition) at first artificial insemination (AI) to face its productive life with minimal guarantees (around 7.0 mm of perirenal fat thickness, 2.8 ng/mL of plasma leptin concentration and around 18% and 15-20% of body protein and fat, respectively). This goal can be achieved by restricting feed intake from 12 weeks of age until first AI or feeding ad libitum with a fibrous diet (<10.5 MJ digestible energy/kg) from 60 d of age to first parturition. Once the doe is reproducing, the increase of the n-3 fatty acids (or reduction of the n-6/n-3 ratio), soluble fibre (under epizootic enteropathy) and the Arg/Lys and Gln/Lys ratios may help to improve the reproductive traits of rabbit does, although their optimal level of inclusion remain to be identified. It is recommended to limit an excessive negative energy balance before parturition, and the supplementation of glucose precursors to reduce the ketosis incidence could be useful. The formulation of different diets for the doe and the litter to fit better their requirements and assuring their health would be an option to consider when it would be applicable in the farm. The influence of the mother on the litter microbiota and immune status and its potential modulation through the diet open a new research area that will deserve more studies in the next future.
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Preventing Bacterial Translocation in Patients with Leaky Gut Syndrome: Nutrition and Pharmacological Treatment Options. Int J Mol Sci 2022; 23:ijms23063204. [PMID: 35328624 PMCID: PMC8949204 DOI: 10.3390/ijms23063204] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 03/14/2022] [Accepted: 03/14/2022] [Indexed: 12/11/2022] Open
Abstract
Leaky gut syndrome is a medical condition characterized by intestinal hyperpermeability. Since the intestinal barrier is one of the essential components maintaining homeostasis along the gastrointestinal tract, loss of its integrity due to changes in bacterial composition, decreased expression levels of tight junction proteins, and increased concentration of pro-inflammatory cytokines may lead to intestinal hyperpermeability followed by the development of gastrointestinal and non-gastrointestinal diseases. Translocation of microorganisms and their toxic metabolites beyond the gastrointestinal tract is one of the fallouts of the leaky gut syndrome. The presence of intestinal bacteria in sterile tissues and distant organs may cause damage due to chronic inflammation and progression of disorders, including inflammatory bowel diseases, liver cirrhosis, and acute pancreatitis. Currently, there are no medical guidelines for the treatment or prevention of bacterial translocation in patients with the leaky gut syndrome; however, several studies suggest that dietary intervention can improve barrier function and restrict bacteria invasion. This review contains current literature data concerning the influence of diet, dietary supplements, probiotics, and drugs on intestinal permeability and bacterial translocation.
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McKenna ZJ, Gorini Pereira F, Gillum TL, Amorim FT, Deyhle MR, Mermier CM. High altitude exposures and intestinal barrier dysfunction. Am J Physiol Regul Integr Comp Physiol 2022; 322:R192-R203. [PMID: 35043679 DOI: 10.1152/ajpregu.00270.2021] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Gastrointestinal complaints are often reported during ascents to high altitude (> 2500 m), though their etiology is not known. One potential explanation is injury to the intestinal barrier which has been implicated in the pathophysiology of several diseases. High altitude exposures can reduce splanchnic perfusion and blood oxygen levels causing hypoxic and oxidative stress. These stressors might injure the intestinal barrier leading to consequences such as bacterial translocation and local/systemic inflammatory responses. The purpose of this mini review is to 1) discuss the impact of high-altitude exposures on intestinal barrier dysfunction, and 2) present medications and dietary supplements which may have relevant impacts on the intestinal barrier during high-altitude exposures. There is a small but growing body of evidence which shows that acute exposures to high altitudes can damage the intestinal barrier. Initial data also suggests that prolonged hypoxic exposures can compromise the intestinal barrier through alterations in immunological function, microbiota, or mucosal layers. Exertion may worsen high-altitude related intestinal injury via additional reductions in splanchnic circulation and greater hypoxemia. Collectively these responses can result in increased intestinal permeability and bacterial translocation causing local and systemic inflammation. More research is needed to determine the impact of various medications and dietary supplements on the intestinal barrier during high-altitude exposures.
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Affiliation(s)
- Zachary J McKenna
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
| | - Felipe Gorini Pereira
- Department of Kinesiology, Indiana University Bloomington, Bloomington, IN, United States
| | - Trevor L Gillum
- Department of Kinesiology, California Baptist University, Riverside, CA, United States
| | - Fabiano Trigueiro Amorim
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
| | - Michael R Deyhle
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
| | - Christine M Mermier
- Department of Health, Exercise, and Sport Sciences, University of New Mexico, Albuquerque, NM, United States
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Rastgoo S, Ebrahimi-Daryani N, Agah S, Karimi S, Taher M, Rashidkhani B, Hejazi E, Mohseni F, Ahmadzadeh M, Sadeghi A, Hekmatdoost A. Glutamine Supplementation Enhances the Effects of a Low FODMAP Diet in Irritable Bowel Syndrome Management. Front Nutr 2022; 8:746703. [PMID: 34977110 PMCID: PMC8716871 DOI: 10.3389/fnut.2021.746703] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Accepted: 11/18/2021] [Indexed: 12/12/2022] Open
Abstract
Background and Aims: Although irritable bowel syndrome is one of the most common gastrointestinal disorders presented to gastroenterologists, therapeutic strategies are not yet well-established. Accordingly, we conducted a randomized, double-blind, placebo-controlled, clinical trial to evaluate the possible superiority of adding glutamine supplement to low fermentable oligo- di- monosaccharides and polyols (FODMAP) diet in patients with irritable bowel syndrome (IBS). Methods: Eligible adults were randomized to receive a low FODMAP diet either with glutamine (15 g/day) or a placebo for 6 weeks. The primary endpoint was a significant reduction in IBS-symptom severity score (IBS-SSS). Secondary endpoints were changes in IBS symptoms, stool frequency, consistency, and quality of life. Results: The study group enrolled 50 patients, among which 22 participants from each group completed the study protocol. The glutamine group had significant changes in total IBS-severity score, dissatisfaction of bowel habit and interference with community function (58% reduction; P < 0.001, 57% reduction; P < 0.001, 51% reduction; P = 0.043, respectively). Improvement in IBS-severity score of more than 45% was observed in 22 of 25 participants (88%) in the glutamine group, while it was only 15 of 25 participants (60%) in the control group (p = 0.015). No serious adverse events were observed. Conclusions: Our findings indicated the superiority of adding glutamine supplementation to a low FODMAP diet in amelioration of IBS symptoms while confirming the beneficial effects of a low FODMAP diet in IBS management.
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Affiliation(s)
- Samira Rastgoo
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Nasser Ebrahimi-Daryani
- Department of Gastroenterology and Hepatology, Tehran University of Medical Sciences, Tehran, Iran
| | - Shahram Agah
- Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Sara Karimi
- Department of Gastroenterology and Hepatology, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Taher
- Department of Gastroenterology and Hepatology, Tehran University of Medical Sciences, Tehran, Iran
| | - Bahram Rashidkhani
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ehsan Hejazi
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Fatemeh Mohseni
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mina Ahmadzadeh
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Amir Sadeghi
- Gastroenterology and Liver Diseases Research Center, Research Institute for Gastroenterology and Liver Diseases, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Azita Hekmatdoost
- Department of Clinical Nutrition and Dietetics, Faculty of Nutrition and Food Technology, National Nutrition and Food Technology, Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Kim YM, Hussain Z, Lee YJ, Park H. Altered Intestinal Permeability and Drug Repositioning in a Post-operative Ileus Guinea Pig Model. J Neurogastroenterol Motil 2021; 27:639-649. [PMID: 34642285 PMCID: PMC8521477 DOI: 10.5056/jnm21018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Revised: 06/04/2021] [Accepted: 08/17/2021] [Indexed: 11/22/2022] Open
Abstract
Background/Aims The aim of this study is to identify the alteration in intestinal permeability with regard to the development of post-operative ileus (POI). Moreover, we investigated drug repositioning in the treatment of POI. Methods An experimental POI model was developed using guinea pigs. To measure intestinal permeability, harvested intestinal membranes of the ileum and proximal colon was used in an Ussing chamber. To identify the mechanisms associated with altered permeability, we measured leukocyte count and expression of calprotectin, claudin-1, claudin-2, and mast cell tryptase. We compared control, POI, and drug groups (mosapride [0.3 mg/kg and 1 mg/kg, orally], glutamine [500 mg/kg, orally], or ketotifen [1 mg/kg, orally] with regard to these parameters. Results Increased permeability after surgery significantly decreased after administration of mosapride, glutamine, or ketotifen. Leukocyte counts increased in the POI group and decreased significantly after administration of mosapride (0.3 mg/kg) in the ileum, and mosapride (0.3 mg/kg and 1 mg/kg), glutamine, or ketotifen in the proximal colon. Increased expression of calprotectin after surgery decreased after administration of mosapride (0.3 mg/kg), glutamine, or ketotifen in the ileum and proximal colon, and mosapride (1 mg/kg) in the ileum. The expression of claudin-1 decreased significantly and that of claudin-2 increased after operation. After administration of glutamine, the expression of both proteins was restored. Finally, mast cell tryptase levels increased in the POI group and decreased significantly after administration of ketotifen. Conclusions The alteration in intestinal permeability is one of the factors involved in the pathogenesis of POI. We repositioned 3 drugs (mosapride, glutamine, and ketotifen) as novel therapeutic agents for POI.
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Affiliation(s)
- Young Min Kim
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Zahid Hussain
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Young Ju Lee
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyojin Park
- Department of Internal Medicine, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Pinto CM, Horta LS, Soares AP, Carvalho BA, Ferreira E, Lages EB, Ferreira LAM, Faraco AAG, Santiago HC, Goulart GAC. Nanoencapsulated Doxorubicin Prevents Mucositis Development in Mice. Pharmaceutics 2021; 13:1021. [PMID: 34371713 PMCID: PMC8329927 DOI: 10.3390/pharmaceutics13071021] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 06/27/2021] [Accepted: 06/30/2021] [Indexed: 12/26/2022] Open
Abstract
Doxorubicin (DOX), a chemotherapy drug successfully used in the therapy of various types of cancer, is currently associated with the mucositis development, an inflammation that can cause ulcerative lesions in the mucosa of the gastrointestinal tract, abdominal pain and secondary infections. To increase the safety of the chemotherapy, we loaded DOX into nanostructured lipid carriers (NLCs). The NLC-DOX was characterized by HPLC, DLS, NTA, Zeta potential, FTIR, DSC, TEM and cryogenic-TEM. The ability of NLC-DOX to control the DOX release was evaluated through in vitro release studies. Moreover, the effect of NLC-DOX on intestinal mucosa was compared to a free DOX solution in C57BL/6 mice. The NLC-DOX showed spherical shape, high drug encapsulation efficiency (84.8 ± 4.6%), high drug loading (55.2 ± 3.4 mg/g) and low average diameter (66.0-78.8 nm). The DSC and FTIR analyses showed high interaction between the NLC components, resulting in controlled drug release. Treatment with NLC-DOX attenuated DOX-induced mucositis in mice, improving shortening on villus height and crypt depth, decreased inflammatory parameters, preserved intestinal permeability and increased expression of tight junctions (ZO-1 and Ocludin). These results indicated that encapsulation of DOX in NLCs is viable and reduces the drug toxicity to mucosal structures.
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Affiliation(s)
- Cristiane M. Pinto
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (C.M.P.); (A.P.S.); (E.B.L.); (L.A.M.F.); (A.A.G.F.)
| | - Laila S. Horta
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (L.S.H.); (H.C.S.)
| | - Amanda P. Soares
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (C.M.P.); (A.P.S.); (E.B.L.); (L.A.M.F.); (A.A.G.F.)
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (L.S.H.); (H.C.S.)
| | - Bárbara A. Carvalho
- Department of General Pathology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (B.A.C.); (E.F.)
| | - Enio Ferreira
- Department of General Pathology, Biological Science Institute, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (B.A.C.); (E.F.)
| | - Eduardo B. Lages
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (C.M.P.); (A.P.S.); (E.B.L.); (L.A.M.F.); (A.A.G.F.)
| | - Lucas A. M. Ferreira
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (C.M.P.); (A.P.S.); (E.B.L.); (L.A.M.F.); (A.A.G.F.)
| | - André A. G. Faraco
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (C.M.P.); (A.P.S.); (E.B.L.); (L.A.M.F.); (A.A.G.F.)
| | - Helton C. Santiago
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (L.S.H.); (H.C.S.)
| | - Gisele A. C. Goulart
- Department of Pharmaceutics, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte 31270-901, MG, Brazil; (C.M.P.); (A.P.S.); (E.B.L.); (L.A.M.F.); (A.A.G.F.)
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Vieira da Silva I, P. Soares B, Pimpão C, M. A. Pinto R, Costa T, Freire JPB, Corrent E, Chalvon-Demersay T, Prates JAM, Lopes PA, Soveral G. Glutamine and cystine-enriched diets modulate aquaporins gene expression in the small intestine of piglets. PLoS One 2021; 16:e0245739. [PMID: 33465153 PMCID: PMC7815100 DOI: 10.1371/journal.pone.0245739] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/07/2021] [Indexed: 12/13/2022] Open
Abstract
The regulation of glycerol permeability in the gastrointestinal tract is crucial to control fat deposition, lipolysis and gluconeogenesis. Knowing that the amino acid glutamine is a physiological regulator of gluconeogenesis, whereas cystine promotes adiposity, herein we investigated the effects of dietary supplementation with glutamine and cystine on the serum biochemical parameters of piglets fed on amino acid-enriched diets, as well as on the transcriptional profile of membrane water and glycerol channels aquaporins (AQPs) in the ileum portion of the small intestine and its impact on intestinal permeability. Twenty male piglets with an initial body weight of 8.8 ± 0.89 kg were allocated to four dietary treatments (n = 5) and received, during a four week-period, a basal diet without supplementation (control) or supplemented with 8 kg/ton of glutamine (Gln), cystine (Cys) or the combination of the two amino acids in equal proportions (Gln + Cys). Most biochemical parameters were found improved in piglets fed Gln and Cys diet. mRNA levels of AQP3 were found predominant over the others. Both amino acids, individually or combined, were responsible for a consistent downregulation of AQP1, AQP7 and AQP10, without impacting on water permeability. Conversely, Cys enriched diet upregulated AQP3 enhancing basolateral membranes glycerol permeability and downregulating glycerol kinase (GK) of intestinal cells. Altogether, our data reveal that amino acids dietary supplementation can modulate intestinal AQPs expression and unveil AQP3 as a promising target for adipogenesis regulation.
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Affiliation(s)
- Inês Vieira da Silva
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- Dept. Bioquímica e Biologia Humana, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Bárbara P. Soares
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- Dept. Bioquímica e Biologia Humana, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Catarina Pimpão
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- Dept. Bioquímica e Biologia Humana, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
| | - Rui M. A. Pinto
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- JCS, Laboratório de Análises Clínicas Dr. Joaquim Chaves, Algés, Portugal
| | - Teresa Costa
- Indukern Portugal, Lda., Centro Empresarial Sintra Estoril II, Sintra, Portugal
| | - João P. B. Freire
- LEAF—Linking Engineering, Agriculture and Food, Departamento de Ciências e Engenharia de Biossistemas, Instituto Superior de Agronomia (ISA), Universidade de Lisboa, Lisboa, Portugal
| | | | | | - José A. M. Prates
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, Lisboa, Portugal
| | - Paula A. Lopes
- CIISA—Centro de Investigação Interdisciplinar em Sanidade Animal, Faculdade de Medicina Veterinária, Universidade de Lisboa, Lisboa, Portugal
- * E-mail: (PAL); (GS)
| | - Graça Soveral
- Research Institute for Medicines (iMed.ULisboa), Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
- Dept. Bioquímica e Biologia Humana, Faculdade de Farmácia, Universidade de Lisboa, Lisboa, Portugal
- * E-mail: (PAL); (GS)
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12
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Vélez J, Velasquez Z, Silva LMR, Gärtner U, Failing K, Daugschies A, Mazurek S, Hermosilla C, Taubert A. Metabolic Signatures of Cryptosporidium
parvum-Infected HCT-8 Cells and Impact of Selected Metabolic Inhibitors on C. parvum Infection under Physioxia and Hyperoxia. BIOLOGY 2021; 10:biology10010060. [PMID: 33467500 PMCID: PMC7831031 DOI: 10.3390/biology10010060] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 12/12/2022]
Abstract
Cryptosporidium parvum is an apicomplexan zoonotic parasite recognized as the second leading-cause of diarrhoea-induced mortality in children. In contrast to other apicomplexans, C.
parvum has minimalistic metabolic capacities which are almost exclusively based on glycolysis. Consequently, C. parvum is highly dependent on its host cell metabolism. In vivo (within the intestine) infected epithelial host cells are typically exposed to low oxygen pressure (1-11% O2, termed physioxia). Here, we comparatively analyzed the metabolic signatures of C. parvum-infected HCT-8 cells cultured under both, hyperoxia (21% O2), representing the standard oxygen condition used in most experimental settings, and physioxia (5% O2), to be closer to the in vivo situation. The most pronounced effect of C. parvum infection on host cell metabolism was, on one side, an increase in glucose and glutamine uptake, and on the other side, an increase in lactate release. When cultured in a glutamine-deficient medium, C. parvum infection led to a massive increase in glucose consumption and lactate production. Together, these results point to the important role of both glycolysis and glutaminolysis during C. parvum intracellular replication. Referring to obtained metabolic signatures, we targeted glycolysis as well as glutaminolysis in C. parvum-infected host cells by using the inhibitors lonidamine [inhibitor of hexokinase, mitochondrial carrier protein (MCP) and monocarboxylate transporters (MCT) 1, 2, 4], galloflavin (lactate dehydrogenase inhibitor), syrosingopine (MCT1- and MCT4 inhibitor) and compound 968 (glutaminase inhibitor) under hyperoxic and physioxic conditions. In line with metabolic signatures, all inhibitors significantly reduced parasite replication under both oxygen conditions, thereby proving both energy-related metabolic pathways, glycolysis and glutaminolysis, but also lactate export mechanisms via MCTs as pivotal for C. parvum under in vivo physioxic conditions of mammals.
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Affiliation(s)
- Juan Vélez
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University-Giessen, Frankfurter Str. 100, 35392 Giessen, Germany;
- Correspondence:
| | - Zahady Velasquez
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
| | - Liliana M. R. Silva
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
| | - Ulrich Gärtner
- Institute of Anatomy and Cell Biology, Justus Liebig University-Giessen, Aulweg 123, 35392 Giessen, Germany;
| | - Klaus Failing
- Unit for Biomathematics and Data Processing, Justus Liebig University-Giessen, Frankfurter Str. 95, 35392 Giessen, Germany;
| | - Arwid Daugschies
- Institute of Parasitology, University of Leipzig, An den Tierkliniken 35, 04103 Leipzig, Germany;
| | - Sybille Mazurek
- Institute of Veterinary Physiology and Biochemistry, Justus Liebig University-Giessen, Frankfurter Str. 100, 35392 Giessen, Germany;
| | - Carlos Hermosilla
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
| | - Anja Taubert
- Biomedical Research Center Seltersberg, Institute of Parasitology, Justus Liebig University-Giessen, Schubert Str. 81, 35392 Giessen, Germany; (Z.V.); (L.M.R.S.); (C.H.); (A.T.)
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13
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Ribeiro MRS, Oliveira DR, Caliari MV, Cara Machado DC, Andrade MER, Cardoso VN, Dos Santos Martins F, Nicoli JR, Gomes MA. Saccharomyces boulardii as therapeutic alternative in experimental giardiasis. J Appl Microbiol 2020; 131:460-469. [PMID: 33289232 DOI: 10.1111/jam.14941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 11/04/2020] [Accepted: 11/18/2020] [Indexed: 01/28/2023]
Abstract
AIMS The objective of this study was to evaluate the effect of treatment with the probiotic Saccharomyces boulardii with or without metronidazole in experimental giardiasis. METHODS AND RESULTS The effect of treatment with S. boulardii with or without metronidazole on the intestinal mucosa, the antioxidant defence system and the parasitic load was determined in experimental giardiasis. Eight groups of animals with infection and/or treatment with the probiotic and/or drugs for 1 week after infection with Giardia lamblia were used. A reduction of approximately 90% in the parasitic load was observed in all the treated groups. Saccharomyces boulardii attenuated the damage caused by infection in the intestinal mucosa preserving its architecture and inhibiting the oxidative stress induced by parasite and metronidazole. CONCLUSIONS Saccharomyces boulardii was effective alone or in combination with metronidazole in resolving already established G. lamblia infection. SIGNIFICANCE AND IMPACT OF THE STUDY These results suggest the use of S. boulardii as an alternative treatment for giardiasis mainly in cases of resistance or intolerance to conventional treatment.
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Affiliation(s)
- M R S Ribeiro
- Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D R Oliveira
- Department of Basic Life Sciences, Universidade Federal de Juiz de Fora - Campus Governador Valadares, Valadares, MG, Brazil
| | - M V Caliari
- Department of Pathology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - D C Cara Machado
- Department of Morphology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - M E R Andrade
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - V N Cardoso
- Department of Clinical and Toxicological Analysis, Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - F Dos Santos Martins
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - J R Nicoli
- Department of Microbiology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - M A Gomes
- Department of Parasitology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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14
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Atypical immunometabolism and metabolic reprogramming in liver cancer: Deciphering the role of gut microbiome. Adv Cancer Res 2020; 149:171-255. [PMID: 33579424 DOI: 10.1016/bs.acr.2020.10.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Hepatocellular carcinoma (HCC) is the fourth leading cause of cancer-related mortality worldwide. Much recent research has delved into understanding the underlying molecular mechanisms of HCC pathogenesis, which has revealed to be heterogenous and complex. Two major hallmarks of HCC include: (i) a hijacked immunometabolism and (ii) a reprogramming in metabolic processes. We posit that the gut microbiota is a third component in an entanglement triangle contributing to HCC progression. Besides metagenomic studies highlighting the diagnostic potential in the gut microbiota profile, recent research is pinpointing the gut microbiota as an instigator, not just a mere bystander, in HCC. In this chapter, we discuss mechanistic insights on atypical immunometabolism and metabolic reprogramming in HCC, including the examination of tumor-associated macrophages and neutrophils, tumor-infiltrating lymphocytes (e.g., T-cell exhaustion, regulatory T-cells, natural killer T-cells), the Warburg effect, rewiring of the tricarboxylic acid cycle, and glutamine addiction. We further discuss the potential involvement of the gut microbiota in these characteristics of hepatocarcinogenesis. An immediate highlight is that microbiota metabolites (e.g., short chain fatty acids, secondary bile acids) can impair anti-tumor responses, which aggravates HCC. Lastly, we describe the rising 'new era' of immunotherapies (e.g., immune checkpoint inhibitors, adoptive T-cell transfer) and discuss for the potential incorporation of gut microbiota targeted therapeutics (e.g., probiotics, fecal microbiota transplantation) to alleviate HCC. Altogether, this chapter invigorates for continuous research to decipher the role of gut microbiome in HCC from its influence on immunometabolism and metabolic reprogramming.
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15
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Nayak S, Rao GM, Marathe A, Vyshnavi M. Protective potentials of Annona muricata fruit pulp on etoposide-induced gastrointestinal toxicity in Wistar rats. J Carcinog 2019; 18:4. [PMID: 31807120 PMCID: PMC6862256 DOI: 10.4103/jcar.jcar_10_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Accepted: 09/11/2019] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND: Mucositis, one of the devastating consequences of chemotherapy and also limits the efficacy of the treatment. At present, there are no antimucositic agents without side effects. Hence, there is a need for better adjuvant therapy using plant or food sources. Here, we have made an attempt to study the effect of Annona muricata (AM) fruit pulp on etoposide-induced mucositis. MATERIALS AND METHODS: The study was conducted at Central Research Laboratory, Kasturba Medical College, Mangalore. The effect of AM fruit pulp (100 mg and 200 mg/kg body weight) on etoposide-induced mucositis was studied in Wistar rats (n = 36) in comparison with normal and AM controls. Intestinal tissue was collected for histology and estimation of total antioxidants (TAO), glutathione (GSH), myeloperoxidase (MPO), and nitric oxide (NO) levels along with histological changes were studied. Statistical analysis was performed by one-way analysis of variance. RESULTS: TAO and GSH levels were found to be significantly high in the rats which received 200 mg of AM/kg body weight than 100 mg of AM/kg body weight when compared with etoposide control. The levels of inflammatory markers - MPO and NO - were found to be decreased (P < 0.001) in the animals received 200 mg/kg body weight of AM in comparison with etoposide group and lower dosage of AM pulp. Histology of intestine also showed a protective effect of AM (200 mg/kg body weight) against etoposide toxicity. CONCLUSION: The results show that AM fruit pulp has the capacity to act as antimucositic agent and also reduced inflammation.
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Affiliation(s)
- Shyamala Nayak
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Gayathri M Rao
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Aradhana Marathe
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - M Vyshnavi
- Department of Biochemistry, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, Karnataka, India
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16
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Huang H, Lin Z, Zeng Y, Lin X, Zhang Y. Probiotic and glutamine treatments attenuate alcoholic liver disease in a rat model. Exp Ther Med 2019; 18:4733-4739. [PMID: 31777560 PMCID: PMC6862500 DOI: 10.3892/etm.2019.8123] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 08/17/2019] [Indexed: 02/07/2023] Open
Abstract
The pathogenesis underlying alcoholic liver disease (ALD), which is often a result of alcohol abuse, currently remains unclear. Previous studies have reported that enteric dysbiosis serves an important role in the pathogenesis of ALD. The present study aimed to investigate the effects of glutamine and probiotics on a rat model of alcoholic liver disease (ALD). Sixty male Sprague-Dawley rats were randomly divided into 6 groups including control (C), alcohol (M), alcohol + Golden Bifido (T), alcohol + glutamine (G), alcohol + Medilac-S® (N) and alcohol + Golden Bifido + glutamine (L). Histology, body weight (BW), triglycerides (TG), serum aspartate transaminase (AST), alanine aminotransferase (ALT), tumor necrosis factor (TNF-α), interleukin-6 (IL-6), diamine oxidase (DAO), occludin, endotoxin and D-lactate levels were assessed whilst changes in the gut flora were evaluated and compared. Results determined that all probiotic and glutamine treatments elevated the abnormally decreased BW and occludin levels whilst the abnormal elevated serum AST, ALT, TG, IL-6, TNF-α, DAO, endotoxin and D-lactate levels were significantly reduced following chronic ethanol consumption. Histopathological observation of the liver demonstrated that probiotic and glutamine treatments attenuated liver damage induced by alcohol. Moreover, sequencing determined that there was a reduction in Firmicutes as well as an increase in Actinobacteria, Proteobacteria and Porphyromonadaceae abundance in the ALD group compared with the healthy controls. However, these changes were prevented by glutamine and probiotic therapy. In conclusion, the present results suggested that probiotics and glutamine ameliorated ALD by suppressing inflammation and regulating the gut microbiota. Therefore, probiotic and glutamine treatments can potentially serve as therapies for the prevention and treatment of ALD.
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Affiliation(s)
- Huping Huang
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
- Department of Gastroenterology, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
- Fujian Institute of Gastroenterology, Fuzhou, Fujian 350000, P.R. China
| | - Zhihui Lin
- Department of Gastroenterology, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
- Fujian Institute of Gastroenterology, Fuzhou, Fujian 350000, P.R. China
| | - Yanling Zeng
- Department of Gastroenterology, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
- Fujian Institute of Gastroenterology, Fuzhou, Fujian 350000, P.R. China
| | - Xueyan Lin
- Department of Gastroenterology, Fujian Provincial Hospital, Fujian Medical University, Fuzhou, Fujian 350000, P.R. China
- Fujian Institute of Gastroenterology, Fuzhou, Fujian 350000, P.R. China
| | - Yali Zhang
- Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, P.R. China
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Perna S, Alalwan TA, Alaali Z, Alnashaba T, Gasparri C, Infantino V, Hammad L, Riva A, Petrangolini G, Allegrini P, Rondanelli M. The Role of Glutamine in the Complex Interaction between Gut Microbiota and Health: A Narrative Review. Int J Mol Sci 2019; 20:E5232. [PMID: 31652531 PMCID: PMC6834172 DOI: 10.3390/ijms20205232] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/16/2019] [Accepted: 10/20/2019] [Indexed: 02/07/2023] Open
Abstract
The scientific literature has demonstrated that glutamine is one of the main beneficial amino acids. It plays an important role in gut microbiota and immunity. This paper provides a critical overview of experimental studies (in vitro, in vivo, and clinical) investigating the efficacy of glutamine and its effect on gut microbiota. As a result of this review, we have summarized that glutamine could affect gut microbiota via different mechanisms including the reduction in the ratio of Firmicutes to Bacteroidetes, with the activation of NF-κB and PI3K-Akt pathways, reducing the intestinal colonization (Eimeria lesions) and bacterial overgrowth or bacterial translocation, increasing the production of secretory immunoglobulin A (SIgA) and immunoglobulin A+ (IgA+) cells in the intestinal lumen, and decreasing asparagine levels. The potential applications of glutamine on gut microbiota include, but are not limited to, the management of obesity, bacterial translocation and community, cytokines profiles, and the management of side effects during post-chemotherapy and constipation periods. Further studies and reviews are needed regarding the effects of glutamine supplementation on other conditions in humans.
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Affiliation(s)
- Simone Perna
- Department of Biology, College of Science, University of Bahrain, 32038 Sakhir, Bahrain.
| | - Tariq A Alalwan
- Department of Biology, College of Science, University of Bahrain, 32038 Sakhir, Bahrain.
| | - Zahraa Alaali
- Department of Biology, College of Science, University of Bahrain, 32038 Sakhir, Bahrain.
| | - Tahera Alnashaba
- Department of Biology, College of Science, University of Bahrain, 32038 Sakhir, Bahrain.
| | - Clara Gasparri
- Endocrinology and Nutrition Unit, Azienda di Servizi alla Persona ''Istituto Santa Margherita'', University of Pavia, Pavia 27100, Italy.
| | - Vittoria Infantino
- Department of Biomedical Science and Human Oncology, University of Bari, Bari 70121, Italy.
| | - Layla Hammad
- Department of Biology, College of Science, University of Bahrain, 32038 Sakhir, Bahrain.
| | - Antonella Riva
- Research and Development Department, Indena SpA, 20139 Milan, Italy.
| | | | - Pietro Allegrini
- Research and Development Department, Indena SpA, 20139 Milan, Italy.
| | - Mariangela Rondanelli
- IRCCS Mondino Foundation, Pavia 27100, Italy.
- Department of Public Health, Experimental and Forensic Medicine, Unit of Human and Clinical Nutrition, University of Pavia, Pavia 27100, Italy.
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18
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Barekatain R, Nattrass G, Tilbrook AJ, Chousalkar K, Gilani S. Reduced protein diet and amino acid concentration alter intestinal barrier function and performance of broiler chickens with or without synthetic glucocorticoid. Poult Sci 2019; 98:3662-3675. [DOI: 10.3382/ps/pey563] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 11/23/2018] [Indexed: 12/13/2022] Open
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19
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Pires W, Veneroso CE, Wanner SP, Pacheco DAS, Vaz GC, Amorim FT, Tonoli C, Soares DD, Coimbra CC. Association Between Exercise-Induced Hyperthermia and Intestinal Permeability: A Systematic Review. Sports Med 2018; 47:1389-1403. [PMID: 27943148 DOI: 10.1007/s40279-016-0654-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Prolonged and strenuous physical exercise increases intestinal permeability, allowing luminal endotoxins to translocate through the intestinal barrier and reach the bloodstream. When recognized by the immune system, these endotoxins trigger a systemic inflammatory response that may affect physical performance and, in severe cases, induce heat stroke. However, it remains to be elucidated whether there is a relationship between the magnitude of exercise-induced hyperthermia and changes in intestinal permeability. OBJECTIVE In this systematic review, we evaluated whether an exercise-induced increase in core body temperature (T Core) is associated with an exercise-induced increase in intestinal permeability. METHODS The present systematic review screened the MEDLINE/PubMed and Web of Science databases in September 2016, without any date restrictions. Sixteen studies that were performed in healthy participants, presented original data, and measured both the exercise-induced changes in T Core and intestinal permeability were selected. These studies assessed intestinal permeability through the measurement of sugar levels in the urine and measurement of intestinal fatty acid binding protein or lipopolysaccharide levels in the blood. RESULTS Exercise increased both T Core and intestinal permeability in most of the 16 studies. In addition, a positive and strong correlation was observed between the two parameters (r = 0.793; p < 0.001), and a T Core exceeding 39 °C was always associated with augmented permeability. CONCLUSION The magnitude of exercise-induced hyperthermia is directly associated with the increase in intestinal permeability.
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Affiliation(s)
- Washington Pires
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 6627 Avenida Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil.,Department of Physical Education, Institute of Life Sciences, Universidade Federal de Juiz de Fora, Governador Valadares, Minas Gerais, Brazil
| | - Christiano E Veneroso
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Samuel P Wanner
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Diogo A S Pacheco
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Gisele C Vaz
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 6627 Avenida Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Fabiano T Amorim
- Department of Physical Education, Universidade Federal dos Vales do Jequitinhonha e Mucuri, Diamantina, Minas Gerais, Brazil.,Department of Health, Exercise Science and Sport, University of New Mexico, Albuquerque, New Mexico, USA
| | - Cajsa Tonoli
- Department of Human Physiology and Sports Medicine, Faculty of Physical Education and Physical Therapy, Vrije Universiteit Brussel, Brussels, Belgium
| | - Danusa D Soares
- Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Cândido C Coimbra
- Department of Physiology and Biophysics, Institute of Biological Sciences, Universidade Federal de Minas Gerais, 6627 Avenida Antônio Carlos, Belo Horizonte, Minas Gerais, 31270-901, Brazil. .,Graduate Program in Sport Sciences, School of Physical Education, Physiotherapy and Occupational Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil.
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20
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Bortoluzzi C, Rochell SJ, Applegate TJ. Threonine, arginine, and glutamine: Influences on intestinal physiology, immunology, and microbiology in broilers. Poult Sci 2018; 97:937-945. [DOI: 10.3382/ps/pex394] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Accepted: 11/17/2017] [Indexed: 12/26/2022] Open
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21
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Lu ZK, Chen ZR, Zhu JY, Xu Y, Hua X. Analysis of the association of single nucleotide polymorphisms of interleukin-23 receptor (IL-23R) and inflammatory bowel disease in a Chinese Han cohort. Oncotarget 2018; 7:67851-67856. [PMID: 27765927 PMCID: PMC5356524 DOI: 10.18632/oncotarget.12296] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2016] [Accepted: 08/31/2016] [Indexed: 12/19/2022] Open
Abstract
Inflammatory bowel disease (IBD) is a chronic, complex genetic disease with rapidly increasing prevalence in China. The interactions of genetic, environmental, and microbial factors contribute to the development of IBD, however, the precise etiologies of IBD are not well understood yet. Interleukin-23 receptor (IL-23R) encodes a subunit of receptor for IL-23, which is an important proinflammatory cytokine. In this study, we investigated the relationship between the single nucleotide polymorphism (SNP) of IL-23R gene and IBD in Chinese Han population. We genotyped three nonsynonymous IL-23R SNPs with amino acid changes (rs11209026, p.Arg381Gln; rs41313262 p.Val362Ile and rs11465797 p.Thr175Asn) in 198 patients with IBD (124 UC and 74 CD) and 100 healthy controls. The prevalence of the A allele in IL-23R Arg381Gln of CD appeared less than controls, but it was not statistically significant (2.70% vs. 6.00%, p > 0.05). There was no statistical difference between UC and controls (5.65% vs. 6.00%, p = 0.91). The p.Val362Ile variant was present in 2.42% of UC patients, in 2.70% of CD patients, which was similar in the control (2.00%). There was no statistical difference among these three groups. We did not detect Thr175Asn (rs11465797 c.524 C>A) in all the three groups. In conclusion, our study demonstrated that the p.Val362Ile and Arg381Gln were not associated with susceptibility to IBD in Chinese Han population.
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Affiliation(s)
- Zhong-Kai Lu
- Department of Gastroenterology, Suzhou Municipal Hospital (Eastern), Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Zhi-Rong Chen
- Department of Gastroenterology, Suzhou Municipal Hospital (Eastern), Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Jun-Yi Zhu
- Department of Gastroenterology, Suzhou Municipal Hospital (Eastern), Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Ya Xu
- Department of Gastroenterology, Suzhou Municipal Hospital (Eastern), Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
| | - Xian Hua
- Department of Gastroenterology, Suzhou Municipal Hospital (Eastern), Suzhou Hospital Affiliated to Nanjing Medical University, Suzhou, China
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Moine L, Díaz de Barboza G, Pérez A, Benedetto M, Tolosa de Talamoni N. Glutamine protects intestinal calcium absorption against oxidative stress and apoptosis. Comp Biochem Physiol A Mol Integr Physiol 2017; 212:64-71. [PMID: 28732794 DOI: 10.1016/j.cbpa.2017.07.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 07/03/2017] [Accepted: 07/13/2017] [Indexed: 12/23/2022]
Abstract
The aim of this study was to investigate whether glutamine (GLN) could block the inhibition of the intestinal Ca2+ absorption caused by menadione (MEN), and elucidate the underlying mechanisms. To do this, one-month old chicks were divided in four groups: 1) controls, 2) MEN treated, 3) GLN treated and 4) GLN treated before or after MEN treatment. Intestinal Ca2+ absorption as well as protein expression of molecules involved in the transcellular Ca2+ pathway were determined. Glutathione (GSH) and superoxide anion and activity of enzymes of the antioxidant system were evaluated. Apoptosis was measured by the TUNEL technique, the expression of FAS and FASL and the caspase-3 activity. A previous dose of 0.5gGLN/kg of b.w. was necessary to show its protector effect and a dose of 1g/kg of b.w. could restore the intestinal Ca2+ absorption after MEN treatment. GLN alone did not modify the protein expression of calbindin D28k and plasma membrane Ca2+-ATPase, but blocked the inhibitory effect of the quinone. GLN avoided changes in the intestinal redox state provoked by MEN such as a decrease in the GSH content, and increases in the superoxide anion and in the SOD and CAT activities. GLN abrogated apoptotic effects caused by MEN in intestinal mucosa, as indicated by the reduction of TUNEL (+) cells and the FAS/FASL/caspase-3 pathway. In conclusion, GLN could be an oral nutritional supplement to normalize the redox state and the proliferation/cell death ratio in the small intestine improving the intestinal Ca2+ absorption altered by oxidative stress.
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Affiliation(s)
- Luciana Moine
- Laboratorio "Dr. Fernando Cañas", Cátedra de Bioquímica y Biología Molecular, Facultad de Ciencias Médicas, INICSA, CONICET-Universidad Nacional de Córdoba, Pabellón Argentina, 2do. Piso, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Gabriela Díaz de Barboza
- Laboratorio "Dr. Fernando Cañas", Cátedra de Bioquímica y Biología Molecular, Facultad de Ciencias Médicas, INICSA, CONICET-Universidad Nacional de Córdoba, Pabellón Argentina, 2do. Piso, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Adriana Pérez
- Laboratorio "Dr. Fernando Cañas", Cátedra de Bioquímica y Biología Molecular, Facultad de Ciencias Médicas, INICSA, CONICET-Universidad Nacional de Córdoba, Pabellón Argentina, 2do. Piso, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Mercedes Benedetto
- Laboratorio "Dr. Fernando Cañas", Cátedra de Bioquímica y Biología Molecular, Facultad de Ciencias Médicas, INICSA, CONICET-Universidad Nacional de Córdoba, Pabellón Argentina, 2do. Piso, Ciudad Universitaria, 5000 Córdoba, Argentina
| | - Nori Tolosa de Talamoni
- Laboratorio "Dr. Fernando Cañas", Cátedra de Bioquímica y Biología Molecular, Facultad de Ciencias Médicas, INICSA, CONICET-Universidad Nacional de Córdoba, Pabellón Argentina, 2do. Piso, Ciudad Universitaria, 5000 Córdoba, Argentina.
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23
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Wang X, Ma Y, Liu J, Yin X, Zhang Z, Wang C, Li Y, Wang H. Reproductive toxicity of β-diketone antibiotic mixtures to zebrafish (Danio rerio). ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2017; 141:160-170. [PMID: 28342328 DOI: 10.1016/j.ecoenv.2017.02.042] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 02/23/2017] [Accepted: 02/24/2017] [Indexed: 05/03/2023]
Abstract
So far, few data are available on the reproductive toxicological assessment of β-diketone antibiotics (DKAs), a class of ubiquitous pseudo-persistent pollutant, in zebrafish (Danio rerio). Herein, we reported the reproductive effects of DKAs by means of transcriptome analysis (F1-zebrafish), changes in a series of reproductive indices (F0-zebrafish) and histopathological observations. A total of 1170, 983 and 1399 genes were found to be differentially expressed when compared control vs. 6.25mg/L, control vs. 12.5mg/L and 6.25 vs. 12.5mg/L DKA-exposure treatments, respectively. Among three comparison groups, 670, 569 and 821 genes were respectively assigned for GO analyses based on matches with sequences of known functions. In 149 KEGG-noted metabolic pathways, the preferential one was the MAPK (mitogen-activated protein kinase) signaling pathway, followed by oxidative phosphorylation, neuroactive ligand-receptor interaction and so on. By qPCR verification, 6 genes (c6ast4, igfbp1b, mrpl42, tnnc2, emc4 and ddit4) showed consistent gene expression with those identified by transcriptome sequencing. Due to DKA-exposure, the concentrations of plasma estradiol and testosterone, and the gonado-somatic index were significantly dose-dependently declined. Also, DKA-exposure led to declining in zebrafish reproductive capacity, reflecting in fertilization, hatchability and egg production. Histopathological observations demonstrated that zebrafish ovary and testis suffered serious damage after DKA-exposure. The 4-oxo-TEMP signals increased obviously with increasing DKA-exposed concentrations, implying disruption of balance between generation and clearance of 1O2. In summary, DKAs not only produce reproductive toxicological effects on F0-zebrafish, but also result in adverse consequences for growth and development of F1-zebrafish.
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Affiliation(s)
- Xuedong Wang
- Key Lab of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, China
| | - Yan Ma
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Jinfeng Liu
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Xiaohan Yin
- Key Lab of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, China
| | - Zhiheng Zhang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Caihong Wang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China
| | - Yanyan Li
- Key Lab of Watershed Sciences and Health of Zhejiang Province, Wenzhou Medical University, Wenzhou 325035, China
| | - Huili Wang
- College of Life Sciences, Wenzhou Medical University, Wenzhou 325035, China.
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24
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Ren W, Wang K, Yin J, Chen S, Liu G, Tan B, Wu G, Bazer FW, Peng Y, Yin Y. Glutamine-Induced Secretion of Intestinal Secretory Immunoglobulin A: A Mechanistic Perspective. Front Immunol 2016; 7:503. [PMID: 27933057 PMCID: PMC5121228 DOI: 10.3389/fimmu.2016.00503] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 10/27/2016] [Indexed: 12/23/2022] Open
Abstract
Secretory immunoglobulin A (SIgA) is one important line of defense in the intestinal mucosal surface to protect the intestinal epithelium from enteric toxins and pathogenic microorganisms. Multiple factors, such as intestinal microbiota, intestinal cytokines, and nutrients are highly involved in production of SIgA in the intestine. Recently, glutamine has been shown to affect intestinal SIgA production; however, the underlying mechanism by which glutamine stimulates secretion of intestinal SIgA is unknown. Here, we review current knowledge regarding glutamine in intestinal immunity and show that glutamine-enhanced secretion of SIgA in the intestine may involve intestinal microbiota, intestinal antigen sampling and presentation, induction pathways for SIgA production by plasma cells (both T-dependent and T-independent pathway), and even transport of SIgA. Altogether, the glutamine-intestinal SIgA axis has broad therapeutic implications for intestinal SIgA-associated diseases, such as celiac disease, allergies, and inflammatory bowel disease.
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Affiliation(s)
- Wenkai Ren
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China; University of the Chinese Academy of Sciences, Beijing, China
| | - Kai Wang
- Institute of Apicultural Research (IAR), Chinese Academy of Agricultural Sciences (CAAS) , Beijing , China
| | - Jie Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China; University of the Chinese Academy of Sciences, Beijing, China
| | - Shuai Chen
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China; University of the Chinese Academy of Sciences, Beijing, China
| | - Gang Liu
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences , Changsha , China
| | - Bie Tan
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences , Changsha , China
| | - Guoyao Wu
- Department of Animal Science, Texas A&M University , College Station, TX , USA
| | - Fuller W Bazer
- Department of Animal Science, Texas A&M University , College Station, TX , USA
| | - Yuanyi Peng
- Chongqing Key Laboratory of Forage & Herbivore, College of Animal Science and Technology, Southwest University , Chongqing , China
| | - Yulong Yin
- Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, China; College of Animal Science, South China Agricultural University, Guangzhou, China
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25
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Leite JSM, Cruzat VF, Krause M, Homem de Bittencourt PI. Physiological regulation of the heat shock response by glutamine: implications for chronic low-grade inflammatory diseases in age-related conditions. ACTA ACUST UNITED AC 2016. [DOI: 10.1186/s41110-016-0021-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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26
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Shu XL, Yu TT, Kang K, Zhao J. Effects of glutamine on markers of intestinal inflammatory response and mucosal permeability in abdominal surgery patients: A meta-analysis. Exp Ther Med 2016; 12:3499-3506. [PMID: 28105083 PMCID: PMC5228558 DOI: 10.3892/etm.2016.3799] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 07/14/2016] [Indexed: 01/20/2023] Open
Abstract
The present meta-analysis was carried out to determine whether supplementation with glutamine (Gln) would reduce the intestinal inflammatory response and mucosal permeability in patients undergoing abdominal surgery. The PubMed, EMBASE, Web of Science, and The Cochrane Library databases were searched for randomized controlled trials on the effects of supplementation with Gln, and published from August, 1966 to June 2014. Inclusion criteria for the meta-analysis were: i) Study design was a randomized controlled trial, ii) study included patients undergoing abdominal surgery, iii) study patients received a supplementation with Gln peptide (Ala-Gln or Gly-Gln) whereas control patients did not use any supplements, and iv) study outcomes included inflammatory markers [C-reactive protein (CRP), tumor necrosis factor-α (TNF-α), and interleukin (IL)-6, and IL-2 receptor] and markers of intestinal permeability [lactulose/mannitol, diamine oxidase, D(−)lactic acid, and endotoxin]. Qualities of controlled trials were assessed using the Jadad score. Meta-analyses were performed with fixed- or random-effect models depending on the heterogeneity of studies. There were 21 trials meeting the inclusion criteria. The meta-analysis revealed that the levels of CRP, TNF-α, and IL-6 in patients supplemented with Gln were significantly lower than those in control patients, whereas the levels of IL-2 receptor were increased by Gln supplementation. Gln also significantly decreased the lactulose/mannitol ratio, the levels of diamine oxidase and endotoxin, and tended to decrease the levels of cyclic D-lactic acid. In conclusion, Gln appears to effectively reduce the inflammatory response and intestinal mucosal permeability in patients after abdominal surgery.
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Affiliation(s)
- Xiao-Liang Shu
- Department of Nutrition, Jinshan Hospital, Fudan University School of Medicine, Shanghai 201508, P.R. China
| | - Ting-Ting Yu
- Tongji University School of Medicine, Shanghai 200092, P.R. China
| | - Kai Kang
- Tongji University School of Medicine, Shanghai 200092, P.R. China
| | - Jian Zhao
- Tongji University School of Medicine, Shanghai 200092, P.R. China
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27
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Li HC, Fan XJ, Chen YF, Tu JM, Pan LY, Chen T, Yin PH, Peng W, Feng DX. Early prediction of intestinal mucosal barrier function impairment by elevated serum procalcitonin in rats with severe acute pancreatitis. Pancreatology 2016; 16:211-7. [PMID: 26804005 DOI: 10.1016/j.pan.2015.12.177] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Revised: 12/24/2015] [Accepted: 12/27/2015] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The aim of this study was to evaluate serum procalcitonin (PCT) levels as a prognostic indicator of intestinal barrier function impairment in rats with severe acute pancreatitis (SAP). METHODS Thirty-six male Sprague Dawley rats were randomly grouped into SAP group (injected sodium taurocholate via biliopancreatic duct), Gln group (gavaged with glutamine after modeling), and control group. Blood, pancreatic, and terminal ileum tissues were obtained from the rats after 6 h of modeling. Serum amylase (Amy) levels were determined using an automatic biochemical detector, while endotoxin (ET), diamine oxidase (DAO), and PCT levels were measured by ELISA test. The pathology of pancreatic and small intestine tissues were observed. PCT protein expression in intestinal tissues were detected by immunohistochemistry and western blot. RESULT Pancreatic and intestinal injuries in Gln group were significantly lower than SAP group. Serum amylase, DAO, and PCT levels in SAP and Gln groups differed greatly and were significantly higher than control group. Immuno-histochemistry and western blot results showed that PCT protein expression levels in small intestine tissues of SAP group were higher than Gln group and control group. Serum PCT levels had a significant correlation with serum endotoxin, DAO levels and intestinal mucosal injury scores. CONCLUSION PCT expression in serum and intestinal tissues in SAP rats increased significantly in the early stages of SAP, and was closely related to the onset and degree of intestinal barrier function impairment. Thus, our results showed that measuring serum PCT can be used to predict intestinal mucosal barrier function impairment in SAP rats.
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Affiliation(s)
- Hong-chang Li
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Xin-juan Fan
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Ya-feng Chen
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Jia-min Tu
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Li-yun Pan
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Teng Chen
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Pei-hao Yin
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Wen Peng
- Laboratory Center, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China
| | - Dian-xu Feng
- Department of General Surgery, Putuo Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai 200062, China.
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28
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The Safety of Arginine in the Critically Ill Patient: What Does the Current Literature Show? Curr Nutr Rep 2015. [DOI: 10.1007/s13668-015-0134-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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McCann JC, Shigenaga MK, Mietus-Snyder ML, Lal A, Suh JH, Krauss RM, Gildengorin GL, Goldrich AM, Block DS, Shenvi SV, McHugh TH, Olson DA, Ames BN. A multicomponent nutrient bar promotes weight loss and improves dyslipidemia and insulin resistance in the overweight/obese: chronic inflammation blunts these improvements. FASEB J 2015; 29:3287-301. [PMID: 25900806 DOI: 10.1096/fj.15-271833] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Accepted: 03/31/2015] [Indexed: 12/12/2022]
Abstract
This study determined if twice-daily consumption of a nutrient-dense bar intended to fill gaps in Western diets, without other dietary/lifestyle requirements, favorably shifted metabolic/anthropometric indicators of dysregulation in a healthy direction. Three 8-wk clinical trials in 43 healthy lean and overweight/obese (OW/OB) adults, who served as their own controls, were pooled for analysis. In less inflamed OW/OB [high-sensitivity C-reactive protein (hsCRP) <1.5], statistically significant decreases occurred in weight (-1.1 ± 0.5 kg), waist circumference (-3.1 ± 1.4 cm), diastolic blood pressure (-4.1 ± 1.6 mmHg), heart rate [HR; -4.0 ± 1.7 beats per minute (bpm)], triglycerides (-72 ± 38.2 mg/dl), insulin resistance (homeostatic model of insulin resistance) (-0.72 ± 0.3), and insulin (-2.8 ± 1.3 mU/L); an increase in HDL-2b (+303 ± 116 nM) and realignment of LDL lipid subfractions toward a less atherogenic profile [decreased small LDL IIIb (-44 ± 23.5 nM), LDL IIIa (-99 ± 43.7 nM), and increased large LDL I (+66 ± 28.0 nM)]. In the more inflamed OW/OB (hsCRP >1.5), inflammation was reduced at 2 wk (-0.66 mg/L), and HR at 8 wk (-3.4 ± 1.3 bpm). The large HDL subfraction (10.5-14.5 nm) increased at 8 wk (+346 ± 126 nM). Metabolic improvements were also observed in lean participants. Thus, favorable changes in measures of cardiovascular health, insulin resistance, inflammation, and obesity were initiated within 8 wk in the OW/OB by replacing deficiencies in Western diets without requiring other dietary or lifestyle modifications; chronic inflammation blunted most improvements.
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Affiliation(s)
- Joyce C McCann
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Mark K Shigenaga
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Michele L Mietus-Snyder
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Ashutosh Lal
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Jung H Suh
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Ronald M Krauss
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Ginny L Gildengorin
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Alisa M Goldrich
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Devan S Block
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Swapna V Shenvi
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Tara H McHugh
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Don A Olson
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
| | - Bruce N Ames
- *Nutrition and Metabolism Center, Children's Hospital Oakland Research Institute, Oakland, California, USA; Children's National Medical Center, Washington, DC, USA; and Processed Foods Research Unit, U.S. Department of Agriculture-Agricultural Research Service-Western Regional Research Center, Albany, California, USA
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30
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Antunes MM, Leocádio PCL, Teixeira LG, Leonel AJ, Cara DC, Menezes GB, Generoso SDV, Cardoso VN, Alvarez-Leite JI, Correia MITD. Pretreatment With L-Citrulline Positively Affects the Mucosal Architecture and Permeability of the Small Intestine in a Murine Mucositis Model. JPEN J Parenter Enteral Nutr 2015; 40:279-86. [PMID: 25573703 DOI: 10.1177/0148607114567508] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/14/2014] [Indexed: 12/19/2022]
Abstract
BACKGROUND Mucositis is a common complication in patients undergoing radiotherapy and chemotherapy. It is associated with pain, poor quality of life, and malnutrition, leading to an increased number of hospital admissions and prolonged hospitalization. The use of immunonutrients may be an alternative treatment option, which may help to improve patient outcome. OBJECTIVE Here we assessed the impact of L-citrulline (CIT) on a murine model of 5-fluorouracil (5FU)-induced mucositis. METHODS Swiss male mice were randomized into 4 groups: control, CIT, 5FU, and 5FU+CIT. Mice were fed with commercial chow and supplemented with an oral solution of alanine (control and 5FU groups) or CIT (CIT and 5FU+CIT groups). On the seventh day, mice received intraperitoneal phosphate-buffered saline or 5FU (200 mg/kg, single dose) to induce mucositis. On the 10th day, mice were euthanized, and the blood and small intestines were harvested. Body weight, morphology, histopathology score (hematoxylin and eosin) of the small intestine (from 0-12), myeloperoxidase activity, oxidative stress level, and intestinal permeability were assessed. RESULTS We observed significant weight loss after the administration of 5FU in both treated and control animals. CIT administration contributed to a partial recovery of the mucosal architecture as well as an intermediate reduction of the histopathologic score, and functional intestinal permeability was partially rescued. CONCLUSIONS CIT administration attenuated 5FU-mediated damage to the mucosal architecture of the small intestine, decreasing the size of the injured areas and promoting decreased intestinal permeability.
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Affiliation(s)
- Maísa Mota Antunes
- Departamento de Ciência de Alimentos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
| | - Paola Caroline Lacerda Leocádio
- Departamento de Ciência de Alimentos, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
| | - Lílian Gonçalves Teixeira
- Departamento de Ciência dos Alimentos, Setor de Nutrição, Universidade Federal de Lavras, Lavras-MG, Brazil
| | - Alda Jusceline Leonel
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
| | - Denise Carmona Cara
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
| | - Gustavo Batista Menezes
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
| | | | - Valbert Nascimento Cardoso
- Departamento de Análises Clínicas e Toxicológicas, Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
| | - Jacqueline Isaura Alvarez-Leite
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte-MG, Brazil
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31
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Dietary glutamine prevents the loss of intestinal barrier function and attenuates the increase in core body temperature induced by acute heat exposure. Br J Nutr 2014; 112:1601-10. [PMID: 25322775 DOI: 10.1017/s0007114514002608] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Dietary glutamine (Gln) supplementation improves intestinal function in several stressful conditions. Therefore, in the present study, the effects of dietary Gln supplementation on the core body temperature (T core), bacterial translocation (BT) and intestinal permeability of mice subjected to acute heat stress were evaluated. Male Swiss mice (4 weeks old) were implanted with an abdominal temperature sensor and randomly assigned to one of the following groups fed isoenergetic and isoproteic diets for 7 d before the experimental trials: group fed the standard AIN-93G diet and exposed to a high ambient temperature (39°C) for 2 h (H-NS); group fed the AIN-93G diet supplemented with l-Gln and exposed to a high temperature (H-Gln); group fed the standard AIN-93G diet and not exposed to a high temperature (control, C-NS). Mice were orally administered diethylenetriaminepentaacetic acid radiolabelled with technetium (99mTc) for the assessment of intestinal permeability or 99mTc-Escherichia coli for the assessment of BT. Heat exposure increased T core (approximately 41°C during the experimental trial), intestinal permeability and BT to the blood and liver (3 h after the experimental trial) in mice from the H-NS group relative to those from the C-NS group. Dietary Gln supplementation attenuated hyperthermia and prevented the increases in intestinal permeability and BT induced by heat exposure. No correlations were observed between the improvements in gastrointestinal function and the attenuation of hyperthermia by Gln. Our findings indicate that dietary Gln supplementation preserved the integrity of the intestinal barrier and reduced the severity of hyperthermia during heat exposure. The findings also indicate that these Gln-mediated effects occurred through independent mechanisms.
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Quirino IEP, Carneiro MBH, Cardoso VN, das Graças Carvalho Dos Santos R, Vieira LQ, Fiuza JA, Alvarez-Leite JI, de Vasconcelos Generoso S, Correia MI. Arginine Supplementation Induces Arginase Activity and Inhibits TNF-α Synthesis in Mice Spleen Macrophages After Intestinal Obstruction. JPEN J Parenter Enteral Nutr 2014; 40:417-22. [PMID: 25135690 DOI: 10.1177/0148607114546374] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2014] [Accepted: 07/14/2014] [Indexed: 11/15/2022]
Abstract
BACKGROUND The purpose of this study was to assess the effect of arginine supplementation on arginase activity, tumor necrosis factor-α (TNF-α) and interleukin-10 (IL-10) synthesis in cultured splenic macrophages from a murine model of intestinal obstruction (IO). The effects of nitric oxide synthase (iNOS) inhibition were also studied using iNOS knockout animals. MATERIAL AND METHODS Male C57BL6/J wild-type (WT) and iNOS knockout (iNOS-/-) mice were randomized into 6 groups: Sham and Sham-/- (standard chow), IO and IO-/- (standard chow + IO), and Arg and Arg-/- (standard chow supplemented with arginine + IO). After 7 days of treatment with standard or supplemented chow, IO was induced. Arginase activity as well as TNF-α and IL-10 levels were analyzed in splenic macrophage cultures. RESULTS Arginine supplementation and the absence of iNOS increased arginase activity in splenic macrophages (Arg, IO-/-, and Arg-/- groups vs the Sham group; P < .05). Arginine was also related to a decrease in TNF-α levels (Arg vs IO group, P < .05) and maintenance of IL-10 levels (Arg vs other groups, P > .05). The inhibition of iNOS did not result in effects on the concentration of cytokines (Sham-/-, IO-/-, and Arg-/- vs other, P < .05). CONCLUSIONS Arginine supplementation and iNOS inhibition led to increased arginase activity. Arginine availability decreased plasma TNF-α levels, which may be directly related to nitric oxide derived from arginine.
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Affiliation(s)
- Iara Eliza Pacífico Quirino
- Department of Clinical Analysis and Toxicology, Pharmacy School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Matheus Batista Heitor Carneiro
- Department of Biochemistry and Immunology, Biologic Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Valbert Nascimento Cardoso
- Department of Clinical Analysis and Toxicology, Pharmacy School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Leda Quercia Vieira
- Department of Biochemistry and Immunology, Biologic Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jacqueline Araújo Fiuza
- Renè Rachou Research Center, Fundação Oswaldo Cruz, Belo Horizonte, MG, Brazil Department of Parasitology, Biologic Sciences Institute Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jacqueline Isaura Alvarez-Leite
- Department of Biochemistry and Immunology, Biologic Sciences Institute, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Maria Isabel Correia
- Department of Surgery, Medical School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
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Alhan E, Usta A, Türkyılmaz S, Kural BV, Erçin C. Effects of glutamine alone on the acute necrotizing pancreatitis in rats. J Surg Res 2014; 193:161-7. [PMID: 25145902 DOI: 10.1016/j.jss.2014.07.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Revised: 06/24/2014] [Accepted: 07/14/2014] [Indexed: 12/23/2022]
Abstract
BACKGROUND The effects of the glutamine on the acute pancreatitis are controversial in the clinical and experimental studies. The aim of this study was to investigate the influence of glutamine alone on acute necrotizing pancreatitis (ANP) induced by glycodeoxycholic acid in rats. MATERIAL AND METHODS Fifty-two male Sprague-Dawley rats weighing 300-350 g were used. Rats were divided into four groups as sham + saline, sham + glutamine, ANP + saline and ANP + glutamine. ANP in rats was induced by glycodeoxycholic acid. The extent of acinar cell injury, mortality, systemic cardiorespiratory variables, functional capillary density, renal/hepatic functions, and changes in some enzyme markers for pancreatic and lung tissue were investigated during ANP in rats. RESULTS The induction of ANP resulted in a significant increase in the mortality rate, pancreatic necrosis, and serum activity of amylase, alanine aminotransferase, interleukin-6, lactate dehydrogenase in bronchoalveolar lavage fluid, serum concentration of urea, and tissue activity of myeloperoxidase and malondialdehyde in the pancreas and lung, and a significant decrease in concentrations of calcium, blood pressure, urine output, pO2, and functional capillary density. The use of glutamine alone improved these changes. CONCLUSIONS Glutamine demonstrated beneficial effect on the course of ANP in rats. Therefore, it may be used by itself in the treatment of acute pancreatitis.
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Affiliation(s)
- Etem Alhan
- Department of Surgery, Karadeniz Technical University, Trabzon, Turkey.
| | - Arif Usta
- Department of Surgery, State Hospital, Karabük, Turkey
| | - Serdar Türkyılmaz
- Department of Surgery, Karadeniz Technical University, Trabzon, Turkey
| | | | - Cengiz Erçin
- Department of Pathology, Kocaeli University, Kocaeli, Turkey
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Wang X, Pierre JF, Heneghan AF, Busch RA, Kudsk KA. Glutamine Improves Innate Immunity and Prevents Bacterial Enteroinvasion During Parenteral Nutrition. JPEN J Parenter Enteral Nutr 2014; 39:688-97. [PMID: 24836948 DOI: 10.1177/0148607114535265] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 04/20/2014] [Indexed: 01/08/2023]
Abstract
BACKGROUND Patients receiving parenteral nutrition (PN) are at increased risk of infectious complications compared with enteral feeding, which is in part explained by impaired mucosal immune function during PN. Adding glutamine (GLN) to PN has improved outcome in some clinical patient groups. Although GLN improves acquired mucosal immunity, its effect on innate mucosal immunity (defensins, mucus, lysozymes) has not been investigated. METHODS Forty-eight hours following venous cannulation, male Institute of Cancer Research mice were randomized to chow (n = 10), PN (n = 12), or PN + GLN (n = 13) for 5 days. Small intestine tissue and luminal fluid were collected for mucin 2 (MUC2), lysozyme, cryptdin 4 analysis, and luminal interleukin (IL)-4, IL-10, and IL-13 level measurement. Tissue was also harvested for ex vivo intestinal segment culture to assess tissue susceptibility to enteroinvasive Escherichia coli. RESULTS In both luminal and tissue samples, PN reduced MUC2 and lysozyme (P < .0001, respectively) compared with chow, whereas GLN addition increased MUC2 and lysozyme (luminal, P < .05; tissue, P < .0001, respectively) compared with PN alone. PN significantly suppressed cryptdin 4 expression, while GLN supplementation significantly enhanced expression. IL-4, IL-10, and IL-13 decreased significantly with PN compared with chow, whereas GLN significantly increased these cytokines compared with PN. Functionally, bacterial invasion increased with PN compared with chow (P < .05), while GLN significantly decreased enteroinvasion to chow levels (P < .05). CONCLUSIONS GLN-supplemented PN improves innate immunity and resistance to bacterial mucosal invasion lost with PN alone. This work confirms a clinical rationale for providing glutamine for the protection of the intestinal mucosa.
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Affiliation(s)
- Xinying Wang
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin Department of Surgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Joseph F Pierre
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| | - Aaron F Heneghan
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
| | - Rebecca A Busch
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Kenneth A Kudsk
- Department of Surgery, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
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Maioli TU, de Melo Silva B, Dias MN, Paiva NC, Cardoso VN, Fernandes SO, Carneiro CM, Dos Santos Martins F, de Vasconcelos Generoso S. Pretreatment with Saccharomyces boulardii does not prevent the experimental mucositis in Swiss mice. J Negat Results Biomed 2014; 13:6. [PMID: 24721659 PMCID: PMC4004512 DOI: 10.1186/1477-5751-13-6] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 04/07/2014] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND The antimetabolite chemotherapy 5-Fluorouracil is one of the most commonly prescribed drugs in clinical cancer treatment. Although this drug is not specific for cancer cells and also acts on healthy cells, it can cause mucositis, a common collateral effect. Dysbiosis has also been described in 5-fluorouracil-induced mucositis and is likely to contribute to the overall development of mucositis. In light of this theory, the use of probiotics could be a helpful strategy to alleviate mucositis. So the aim of this study was evaluate the impact of the probiotic Saccharomyces boulardii in a model of mucositis. RESULTS After induced of mucositis, mice from the Mucositis groups showed a decrease in food consumption (p < 0.05) and therefore had a greater weight loss (p < 0.05). The treatment with Saccharomyces boulardii did not reverse this effect (p > 0.05). Mucositis induced an increase in intestinal permeability and intestinal inflammation (p < 0.05). There were no differences in mucosal lesions, intestinal permeability and sIgA secretion (p > 0.05) in mice pretreated with S. boulardii. CONCLUSIONS S. boulardii was not able to prevent the effects of experimental mucositis induced by 5- Fluorouracil.
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Costa KA, Soares ADN, Wanner SP, Santos RDGCD, Fernandes SOA, Martins FDS, Nicoli JR, Coimbra CC, Cardoso VN. L-arginine supplementation prevents increases in intestinal permeability and bacterial translocation in male Swiss mice subjected to physical exercise under environmental heat stress. J Nutr 2014; 144:218-23. [PMID: 24259555 DOI: 10.3945/jn.113.183186] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Dietary supplementation with l-arginine has been shown to improve the intestinal barrier in many experimental models. This study investigated the effects of arginine supplementation on the intestinal permeability and bacterial translocation (BT) induced by prolonged physical exercise under heat stress. Under anesthesia, male Swiss mice (5-wk-old) were implanted with an abdominal sensor to record their core body temperature (T(core)). After recovering from surgery, the mice were divided into 3 groups: a non-supplemented group that was fed the standard diet formulated by the American Institute of Nutrition (AIN-93G; control), a non-supplemented group that was fed the AIN-93G diet and subjected to exertional hyperthermia (H-NS), and a group supplemented with l-arginine at 2% and subjected to exertional hyperthermia (H-Arg). After 7 d of treatment, the H-NS and H-Arg mice were forced to run on a treadmill (60 min, 8 m/min) in a warm environment (34°C). The control mice remained at 24°C. Thirty min before the exercise or control trials, the mice received a diethylenetriamine pentaacetic acid (DTPA) solution labeled with technetium-99m ((99m)Tc-DTPA) or (99m)Tc-Escherichia coli by gavage to assess intestinal permeability and BT, respectively. The H-NS mice terminated the exercise with T(core) values of ∼40°C, and, 4 h later, presented a 12-fold increase in the blood uptake of (99m)Tc-DTPA and higher bacterial contents in the blood and liver than the control mice. Although supplementation with arginine did not change the exercise-induced increase in T(core), it prevented the increases in intestinal permeability and BT caused by exertional hyperthermia. Our results indicate that dietary l-arginine supplementation preserves the integrity of the intestinal epithelium during exercise under heat stress, acting through mechanisms that are independent of T(core) regulation.
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Wang H, Zhang W, Zuo L, Dong J, Zhu W, Li Y, Gu L, Gong J, Li Q, Li N, Li J. Intestinal dysbacteriosis contributes to decreased intestinal mucosal barrier function and increased bacterial translocation. Lett Appl Microbiol 2013; 58:384-92. [PMID: 24354719 DOI: 10.1111/lam.12201] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/12/2013] [Accepted: 11/22/2013] [Indexed: 12/31/2022]
Abstract
UNLABELLED The purpose of this study was to determine the effect of colistin-induced intestinal dysbacteriosis on intestinal mucosal barrier function and bacterial translocation in a mouse model. Colistin or saline was administered orally for 7 days, and populations of viable organisms from the caecal mucosa and its content, the ileal segments, the mesenteric lymph nodes (MLNs) and the internal organs were prepared for examination. In the intestinal dysbacteriosis model, intestinal barrier dysfunction was observed and associated with increased bacterial translocation to extraintestinal sites. The extent of bacterial translocation to the MLNs and internal organs in the colistin group was significantly higher than in the saline group. Colistin-induced intestinal dysbacteriosis was shown to injure the intestinal mucosa barrier function and increase bacterial dislocation. SIGNIFICANCE AND IMPACT OF THE STUDY Colistin has been reported to be effective in selective digestive decontamination (SDD), which is an infection prevention measure used in the treatment of certain patients in intensive care. We are the first to report that colistin-induced intestinal dysbacteriosis can injure intestinal mucosal barrier function and increase bacterial translocation, whereas a high dose of colistin does not damage the intestinal mucosal barrier in germ-free (GF) mice raised in a GF environment. These results may indicate that prolonged use of a high dose of a SDD medication should be carefully considered.
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Affiliation(s)
- H Wang
- Department of General Surgery, Jinling Hospital, Medical School of Nanjing University, Nanjing, Jiangsu Province, China
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Hatipoğlu AR, Oğuz S, Gürcan S, Yalta T, Albayrak D, Erenoğlu C, Sağıroğlu T, Sezer YA. Combined effects of tauroursodeoxycholic Acid and glutamine on bacterial translocation in obstructive jaundiced rats:. Balkan Med J 2013; 30:362-8. [PMID: 25207142 DOI: 10.5152/balkanmedj.2013.7785] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Accepted: 09/09/2013] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Bacterial Translocation is believed to be an important factor on mortality and morbidity in Obstructive Jaundiced. AIMS We investigated the probable or estimated positive effects of tauroursodeoxycholic acid, which has antibacterial and regulatory effects on intestinal flora, together with glutamine on BT in an experimental obstructive jaundiced rat model. STUDY DESIGN Animal experimentation. METHODS Forty adult, male, Sprague Dawley rats were used in this study. Animals were randomised and divided into five groups of eight each: sham (Sh); control (common bile duct ligation, CBDL); and supplementation groups administered tauroursodeoxycholic acid (CBDL+T), glutamine (CBDL+G), or tauroursodeoxycholic acid plus glutamine (CBDL+TG). Blood and liver, spleen, MLN, and ileal samples were taken via laparotomy under sterile conditions for investigation of bacterial translocation and intestinal mucosal integrity and hepatic function tests on the tenth postoperative day. RESULTS There were statistically significant differences in BT rates in all samples except the spleen of the CBDL+TG group compared with the CBDL group (p=0.041, p=0.026, and p=0.041, respectively). CONCLUSION It is essential to protect hepatic functions besides maintaining intestinal mucosal integrity in the active struggle against BT occurring in obstructive jaundice. The positive effect on intestinal mucosal integrity can be increased if glutamine is used with tauroursodeoxycholic acid, which also has hepatoprotective and immunomodulatory features.
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Affiliation(s)
- Ahmet Rahmi Hatipoğlu
- Department of General Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Serhat Oğuz
- Department of General Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Saban Gürcan
- Department of Microbiology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Tülin Yalta
- Department of Pathology, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Doğan Albayrak
- Department of General Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Cengiz Erenoğlu
- Department of General Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Tamer Sağıroğlu
- Department of General Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
| | - Yavuz Atakan Sezer
- Department of General Surgery, Trakya University Faculty of Medicine, Edirne, Turkey
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Zhang X, Jiang X. Effects of Enteral Nutrition on the Barrier Function of the Intestinal Mucosa and Dopamine Receptor Expression in Rats With Traumatic Brain Injury. JPEN J Parenter Enteral Nutr 2013; 39:114-23. [DOI: 10.1177/0148607113501881] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Xuan Zhang
- School of Nursing, Fujian Medical University, Fuzhou, China
| | - Xiaoying Jiang
- School of Nursing, Fujian Medical University, Fuzhou, China
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Pierre JF, Heneghan AF, Lawson CM, Wischmeyer PE, Kozar RA, Kudsk KA. Pharmaconutrition Review. JPEN J Parenter Enteral Nutr 2013; 37:51S-65S. [DOI: 10.1177/0148607113493326] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Joseph F. Pierre
- Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison
| | - Aaron F. Heneghan
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison
| | - Christy M. Lawson
- Department of Surgery, University of Tennessee Medical Center, Knoxville
| | | | - Rosemary A. Kozar
- Department of Surgery, University of Texas–Houston Health Science Center, Houston
| | - Kenneth A. Kudsk
- Veterans Administration Surgical Services, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin
- Department of Surgery, School of Medicine and Public Health, University of Wisconsin, Madison
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Effects of nitric oxide synthase inhibition on glutamine action in a bacterial translocation model. Br J Nutr 2013; 111:93-100. [DOI: 10.1017/s0007114513001888] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Glutamine may be a precursor for NO synthesis, which may play a crucial role in bacterial translocation (BT). The goal of the present study was to investigate the potential effects of glutamine on BT and the immunological response in an experimental model of NO synthase inhibition by NG-nitro-L-arginine methyl ester (l-NAME). Mice were randomly assigned to four groups: sham; intestinal obstruction (IO); IO+500 mg/kg per d glutamine (GLN); IO+GLN plus 10 mg/kg per d l-NAME (GLN/LN). The groups were pretreated for 7 d. BT was induced by ileal ligation and was assessed 18 h later by measuring the radioactivity of 99mTc-Escherichiacoli in the blood and organs. Mucosal damage was determined using a histological analysis. Intestinal permeability (IP) was assessed by measuring the levels of 99mTc-diethylenetriaminepentaacetic acid in the blood at 4, 8 and 18 h after surgery. IgA and cytokine concentrations were determined by ELISA in the intestinal fluid and plasma, respectively. BT was increased in the GLN/LN and IO groups than in the GLN and sham groups. IP and intestinal mucosa structure of the sham, GLN and GLN/LN groups were similar. The GLN group had the highest levels of interferon-γ, while IL-10 and secretory IgA levels were higher than those of the IO group but similar to those of the GLN/LN group. The present results suggest that effects of the glutamine pathway on BT were mediated by NO. The latter also interferes with the pro-inflammatory systemic immunological response. On the other hand, IP integrity preserved by the use of glutamine is independent of NO.
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Tian Y, Wang K, Wang Z, Li N, Ji G. Chemopreventive effect of dietary glutamine on colitis-associated colon tumorigenesis in mice. Carcinogenesis 2013; 34:1593-600. [PMID: 23471883 DOI: 10.1093/carcin/bgt088] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Chronic colonic inflammation is a known risk factor for colorectal cancer (CRC). Glutamine (GLN) supplementation has shown its anti-inflammation benefit in experimental colitis. Whether GLN is effective in preventing colon carcinogenesis remains to be investigated. The chemopreventive activity of GLN was evaluated in the mouse model of dextran sulfate sodium (DSS)/azoxymethane (AOM)-induced colitis-associated CRC in this study. Mice were treated with DSS/AOM and randomized to receive either a control diet or GLN-enriched diet intermittently of the study. The disease activity index was evaluated weekly. On day 80 of the experiment, the entire colon and rectum were processed for histopathologic examination and further evaluation. Pro-inflammatory mediators and cytokines were measured by enzyme-linked immunosorbent assay, real-time-PCR and western blot analysis. Here, we show that after GLN-enriched diet, the colitis presented a statistical improvement and tumors burden decreased significantly. This was accompanied by lower activity of nuclear factor-κB (NF-κB), decreased expression of cyclooxygenase-2 and inducible nitric oxide synthase, lower expression of cytokines and chemokines as well as reduced proliferation and induced apoptosis in the colons of colitis-associated CRC mice. Our data demonstrate the protective/preventive effect of GLN in the progression of colitis-associated CRC, which was correlated with a dampening of inflammation and NF-κB activity and with a decrease of inflammatory protein overexpression.
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Affiliation(s)
- Yun Tian
- Department of Oncology, the Second Affiliated Hospital of Nanjing Medical University, Nanjing 210011, China
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Effect of adenine on bacterial translocation using technetium-99m labeled E. coli in an intestinal obstruction model in rats. J Radioanal Nucl Chem 2013. [DOI: 10.1007/s10967-012-2223-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Çıtak A, Yilmaz O, Pekçetin Ç, Ozbal S, Lambrecht FY. Influence of uracil on bacterial translocation in an intestinal obstruction model in rats. Int J Surg 2012; 11:27-30. [PMID: 23164988 DOI: 10.1016/j.ijsu.2012.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Revised: 10/02/2012] [Accepted: 11/09/2012] [Indexed: 01/07/2023]
Abstract
INTRODUCTION Bacterial translocation occurs when intestinal mucosa and the intestinal wall lose their barrier properties against bacteria such as in the case of intestinal obstruction. Enteral nutrition with immunonutrients strengthens the immune system and thickens the intestinal barrier thus preventing bacterial translocation. AIM The purpose of this study is to investigate the effect of uracil which is an immunonutrient on bacterial translocation using rats with intestinal obstruction as a model. METHODS Wistar albino rats were divided into three groups. The control group was fed with standard chow diet, while the other two groups were fed with uracil-supplemented chow diet. The rats were fed with these diets for seven days. And the end of the feeding period all groups were submitted intestinal obstruction and injected with (99m)Tc labeled Escherichia coli into the rats' terminal ileum under anesthetic. The rats were sacrificed 24 h later. Their blood, mesenteric lymph nodes (MLN), liver, spleen, lung and ileum were removed to determine level of radioactivity. RESULTS When compared with the control group it was determined that uracil supplementation reduced the level of bacterial translocation. CONCLUSION Uracil may be used in the prevention of bacterial translocation in cases of intestinal obstruction because it strengthens the intestinal barrier and the immune system. However, more studies are needed to clearly explain the mechanism behind uracil's beneficial role here.
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Affiliation(s)
- Aslı Çıtak
- Department of Nuclear Applications, Institute of Nuclear Science, Ege University, Bornova, 35100 Izmir, Turkey
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Quirino IEP, Cardoso VN, Santos RDGCD, Evangelista WP, Arantes RME, Fiúza JA, Glória MBA, Alvarez-Leite JI, Batista MA, Correia MITD. The Role of L-Arginine and Inducible Nitric Oxide Synthase in Intestinal Permeability and Bacterial Translocation. JPEN J Parenter Enteral Nutr 2012; 37:392-400. [DOI: 10.1177/0148607112458325] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Iara Eliza Pacífico Quirino
- Departamento de Alimentos da Faculdade de Farmácia da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Valbert Nascimento Cardoso
- Departamento de Análises Clínicas e Toxicológicas da Faculdade de Farmácia da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | | | - Warlley Pinheiro Evangelista
- Departamento de Alimentos da Faculdade de Farmácia da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Rosa Maria Esteves Arantes
- Departamento de Patologia Geral do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais- Belo Horizonte, Brasil
| | - Jacqueline Araújo Fiúza
- Centro de Pesquisa Renè Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Brasil
- Departamento de Parasitologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Maria Beatriz Abreu Glória
- Departamento de Alimentos da Faculdade de Farmácia da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Jacqueline Isaura Alvarez-Leite
- Departamento de Bioquímica e Imunologia do Instituto de Ciências Biológicas da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
| | - Marina Andrade Batista
- Departamento de Pediatria da Faculdade de Medicina da Universidade Federal de Minas Gerais, Belo Horizonte, Brasil
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Effects of a preconditioning oral nutritional supplement on pig livers after warm ischemia. HPB SURGERY : A WORLD JOURNAL OF HEPATIC, PANCREATIC AND BILIARY SURGERY 2012; 2012:783479. [PMID: 22791934 PMCID: PMC3389686 DOI: 10.1155/2012/783479] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2012] [Accepted: 05/03/2012] [Indexed: 01/22/2023]
Abstract
Background. Several approaches have been proposed to pharmacologically ameliorate hepatic ischemia/reperfusion injury (IRI). This study was designed to evaluate the effects of a preconditioning oral nutritional supplement (pONS) containing glutamine, antioxidants, and green tea extract on hepatic warm IRI in pigs. Methods. pONS (70 g per serving, Fresenius Kabi, Germany) was dissolved in 250 mL tap water and given to pigs 24, 12, and 2 hrs before warm ischemia of the liver. A fourth dose was given 3 hrs after reperfusion. Controls were given the same amount of cellulose with the same volume of water. Two hours after the third dose of pONS, both the portal vein and the hepatic artery were clamped for 40 min. 0.5, 3, 6, and 8 hrs after reperfusion, heart rate (HR), mean arterial pressure (MAP), central venous pressure (CVP), portal venous flow (PVF), hepatic arterial flow (HAF), bile flow, and transaminases were measured. Liver tissue was taken 8 hrs after reperfusion for histology and immunohistochemistry. Results. HR, MAP, CVP, HAF, and PVF were comparable between the two groups. pONS significantly increased bile flow 8 hrs after reperfusion. ALT and AST were significantly lower after pONS. Histology showed significantly more severe necrosis and neutrophil infiltration in controls. pONS significantly decreased the index of immunohistochemical expression for TNF-α, MPO, and cleaved caspase-3 (P < 0.001). Conclusion. Administration of pONS before and after tissue damage protects the liver from warm IRI via mechanisms including decreasing oxidative stress, lipid peroxidation, apoptosis, and necrosis.
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Ilan Y. Leaky gut and the liver: A role for bacterial translocation in nonalcoholic steatohepatitis. World J Gastroenterol 2012; 18:2609-18. [PMID: 22690069 PMCID: PMC3369997 DOI: 10.3748/wjg.v18.i21.2609] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2011] [Revised: 01/31/2012] [Accepted: 04/21/2012] [Indexed: 02/06/2023] Open
Abstract
Gut flora and bacterial translocation (BT) play important roles in the pathogenesis of chronic liver disease, including cirrhosis and its complications. Intestinal bacterial overgrowth and increased bacterial translocation of gut flora from the intestinal lumen predispose patients to bacterial infections, major complications and also play a role in the pathogenesis of chronic liver disorders. Levels of bacterial lipopolysaccharide, a component of gram-negative bacteria, are increased in the portal and/or systemic circulation in several types of chronic liver disease. Impaired gut epithelial integrity due to alterations in tight junction proteins may be the pathological mechanism underlying bacterial translocation. Preclinical and clinical studies over the last decade have suggested a role for BT in the pathogenesis of nonalcoholic steatohepatitis (NASH). Bacterial overgrowth, immune dysfunction, alteration of the luminal factors, and altered intestinal permeability are all involved in the pathogenesis of NASH and its complications. A better understanding of the cell-specific recognition and intracellular signaling events involved in sensing gut-derived microbes will help in the development of means to achieve an optimal balance in the gut-liver axis and ameliorate liver diseases. These may suggest new targets for potential therapeutic interventions for the treatment of NASH. Here, we review some of the mechanisms connecting BT and NASH and potential therapeutic developments.
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An in silico model of enterocytic glutamine to citrulline conversion pathway. Amino Acids 2012; 43:1727-37. [PMID: 22399052 DOI: 10.1007/s00726-012-1257-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 02/19/2012] [Indexed: 01/01/2023]
Abstract
Enterocyte is one of the main sites of amino acids metabolism and particularly of the citrulline biosynthesis. Working at the cellular scale and applying ordinary differential equations (ODEs) formalism, we have built a mathematical model of the enterocytic glutamine to citrulline conversion in the fasting state. This model enables us to test different physiopathological scenarios of enzyme activity loss. Results from two different approaches were compared: a standard approach (KA) based on the Michaelis-Menten assumptions and an association-dissociation approach (VH) based on the kinetic mass action law. For both approaches, ODEs system was numerically solved using Mathematica™. In both cases, the model correctly predicts the physiological plasma citrulline steady-state, but the two approaches present clear differences for metabolites of enzymes having a complex mechanism, challenging the validity of the KA approach in such cases. When physiopathological scenarios of enzyme activity loss are simulated, both approaches predict a very sharp transition from the physiological citrulline plasma level to the lack of its production: the concentration profiles of these simulations show a clear threshold of which characteristics vary with the involved enzyme. Moreover, amongst all enzymes included in the model, the ornithine aminotransferase (OAT) shows the highest sensitivity in the system whatever the approach used. This model points out the limits of the Michaelis-Menten approach to model complex enzyme mechanisms. It highlights the key role of OAT in the studied citrulline synthesis pathway and also suggests an order of magnitude about the optimal ratio of enzyme concentrations in this pathway.
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Kang X, Yang L, Lu XG, Wang XZ, Jiang L, Fan ZW, Guo S, Dong Y, Lv CY. Efficacy of triple therapy with Sandostatin, Dahuang Fuzi Decoction and XiNeng in the treatment of postoperative acute adhesive intestinal obstruction: an analysis of 45 cases. Shijie Huaren Xiaohua Zazhi 2012; 20:79-83. [DOI: 10.11569/wcjd.v20.i1.79] [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
AIM: To evaluate the efficacy of triple therapy with octreotide acetate (Sandostatin), Dahuang Fuzi Decoction and N(2)-L-alanyl-L-glutamine (XiNeng) in the treatment of postoperative acute adhesive intestinal obstruction.
METHODS: This was a prospective, single-center, randomized controlled clinical trial. Eighty-five patients with postoperative acute adhesive intestinal obstruction who were treated at the Affiliated Zhongshan Hospital of Dalian University from May 2009 to January 2011 were randomly divided into control group (n = 40) and treatment group (n = 45). The control group received conventional treatment, including fasting, gastrointestinal decompression, soapy water enema, rehydration and anti-infection, while the treatment group received triple therapy on the basis of conventional therapy. Both the two groups were treated until the obstruction relieved. Clinical manifestations, the clinical curative effect, the number of cases of conversion to surgery, and the length of hospital stay were compared between the two groups.
RESULTS: Compared to the control group, the treatment group had a shorter time to first anal exhaust (70.7 ± 10.4 h vs 45.3 ± 9.8 h, P < 0.05), time to first defecation (112.4 ± 16.8 h vs 70.5 ± 12.7 h, P < 0.05), stomach tube retention time (135.8 ± 26.7 h vs 91.5 ± 14.1 h, P < 0.05), eating recovery time (158.8 ± 26.4 h vs 109.4 ± 15.7 h, P <0.05), and length of hospital stay (13.9 ± 3.4 d vs 8.2 ± 2.6 d, P < 0.05). In the control group, 19 cases were cured, 13 cases were improved, and 8 cases showed no improvement. In the treatment group, the corresponding figures were 31, 11 and 3, respectively. The total response rate was 93.3% for the treatment group and 80.0% for the control group. The number of cases of conversion to surgery was significantly fewer in the treatment group than in the control group (3 vs 8, P < 0.05).
CONCLUSION: Triple therapy with Sandostatin, Dahuang Fuzi Decoction and XiNeng could significantly improve clinical symptoms, promote the recovery of bowel function, reduce the rate of conversion to surgery, and shorten hospital stay in patients with postoperative acute adhesive intestinal obstruction.
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Niu ZJ, Zhang XF, Zhao CL, Liu T, Zhai ET. Value of glutamine in conservative treatment of patients with intestinal obstruction after abdominal operation. Shijie Huaren Xiaohua Zazhi 2011; 19:3714-3718. [DOI: 10.11569/wcjd.v19.i36.3714] [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
AIM: To evaluate the value of glutamine in conservative treatment of patients with intestinal obstruction after abdominal operation.
METHODS: Fifty-eight patients with intestinal obstruction after abdominal operation were randomly divided into control group and treatment group. The control group received conventional treatment, including fasting, gastrointestinal decompression, maintenance of water electrolyte and acid-base balance, use of antibiotics, somatostatin, and total parenteral nutrition, while the treatment group received glutamine on the basis of conventional treatment. All patients' bowel function was evaluated using a scoring system. Peripheral blood samples were collected to measure the levels of D-lactic acid and intestinal fatty acid-binding protein (IFABP). The time to recovery of intestinal function was recorded.
RESULTS: A positive correlation was found between D-lactic acid levels and gut dysfunction scores, and between IFABP levels and gut dysfunction scores (r = 0.824, r = 0.891, both P < 0.001). In both groups, blood levels of D-lactic acid and IFABP decreased significantly with the prolongation of treatment duration, which was more significant in the treatment group than in the control group. The time to recovery of intestinal function was significantly shorter in the treatment group than in the control group (6.83 d ± 1.49 d vs 8.76 d ± 1.53 d, P < 0.001).
CONCLUSION: Glutamine plays an important role in protecting gut barrier function, reducing the intestinal mucous membrane permeability, and promoting bowel function recovery in patients with intestinal obstruction after abdominal operation.
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