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Trotta RJ, Swanson KC, Klotz JL, Harmon DL. Influence of postruminal casein infusion and exogenous glucagon-like peptide 2 administration on the jejunal mucosal transcriptome in cattle. PLoS One 2024; 19:e0308983. [PMID: 39146343 PMCID: PMC11326568 DOI: 10.1371/journal.pone.0308983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 08/03/2024] [Indexed: 08/17/2024] Open
Abstract
We previously demonstrated that postruminal casein infusion and exogenous glucagon-like peptide 2 (GLP-2) administration independently stimulated growth and carbohydrase activity of the pancreas and jejunal mucosa in cattle. The objective of the current study was to profile the jejunal mucosal transcriptome of cattle using next-generation RNA sequencing in response to postruminal casein infusion and exogenous GLP-2. Twenty-four Holstein steers [250 ± 23.1 kg body weight (BW)] received a continuous abomasal infusion of 3.94 g raw corn starch/kg of BW combined with either 0 or 1.30 g casein/kg of BW for 7 d. Steers received subcutaneous injections at 0800 and 2000 h to provide either 0 or 100 μg GLP-2/kg of BW per day. At the end of the 7-d treatment period, steers were slaughtered for collection of the jejunal mucosa. Total RNA was extracted from jejunal mucosal tissue, strand-specific cDNA libraries were prepared, and RNA sequencing was conducted to generate 150-bp paired-end reads at a depth of 40 M reads per sample. Differentially expressed genes (DEG), KEGG pathway enrichment, and gene ontology enrichment were determined based on the FDR-corrected P-value (padj). Exogenous GLP-2 administration upregulated (padj < 0.05) 667 genes and downregulated 1,101 genes of the jejunal mucosa. Sphingolipid metabolism, bile secretion, adherens junction, and galactose metabolism were among the top KEGG pathways enriched with upregulated DEG (padj < 0.05) in response to exogenous GLP-2 administration. The top gene ontologies enriched with upregulated DEG (padj < 0.05) in response to exogenous GLP-2 administration included nutrient metabolic processes, brush border and bicellular tight junction assembly, and enzyme and transporter activities. Exogenous GLP-2 administration increased or tended to increase (padj < 0.10) brush border carbohydrase (MGAM, LCT, TREH), hexose transporter (SLC5A1, SLC2A2), and associated transcription factor (HNF1, GATA4, KAT2B) mRNA expression of the jejunal mucosa. Gene ontologies and KEGG pathways that were downregulated (padj < 0.05) in response to exogenous GLP-2 were related to genetic information processing. Postruminal casein infusion downregulated (padj < 0.05) 7 jejunal mucosal genes that collectively did not result in enriched KEGG pathways or gene ontologies. This study highlights some of the transcriptional mechanisms associated with increased growth, starch assimilation capacity, and barrier function of the jejunal mucosa in response to exogenous GLP-2 administration.
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Affiliation(s)
- Ronald J. Trotta
- Department of Animal and Food Sciences, University of Kentucky, Lexington, Kentucky, United States of America
| | - Kendall C. Swanson
- Department of Animal Science, North Dakota State University, Fargo, North Dakota, United States of America
| | - James L. Klotz
- Forage-Animal Production Research Unit, United States Department of Agriculture, Agricultural Research Service, Lexington, Kentucky, United States of America
| | - David L. Harmon
- Department of Animal and Food Sciences, University of Kentucky, Lexington, Kentucky, United States of America
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Covello C, Becherucci G, Di Vincenzo F, Del Gaudio A, Pizzoferrato M, Cammarota G, Gasbarrini A, Scaldaferri F, Mentella MC. Parenteral Nutrition, Inflammatory Bowel Disease, and Gut Barrier: An Intricate Plot. Nutrients 2024; 16:2288. [PMID: 39064731 PMCID: PMC11279609 DOI: 10.3390/nu16142288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 07/14/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Malnutrition poses a critical challenge in inflammatory bowel disease, with the potential to detrimentally impact medical treatment, surgical outcomes, and general well-being. Parenteral nutrition is crucial in certain clinical scenarios, such as with patients suffering from short bowel syndrome, intestinal insufficiency, high-yielding gastrointestinal fistula, or complete small bowel obstruction, to effectively manage malnutrition. Nevertheless, research over the years has attempted to define the potential effects of parenteral nutrition on the intestinal barrier and the composition of the gut microbiota. In this narrative review, we have gathered and analyzed findings from both preclinical and clinical studies on this topic. Based on existing evidence, there is a clear correlation between short- and long-term parenteral nutrition and negative effects on the intestinal system. These include mucosal atrophic damage and immunological and neuroendocrine dysregulation, as well as alterations in gut barrier permeability and microbiota composition. However, the mechanistic role of these changes in inflammatory bowel disease remains unclear. Therefore, further research is necessary to effectively address the numerous gaps and unanswered questions pertaining to these issues.
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Affiliation(s)
- Carlo Covello
- Gastroenterology Department, Centro di Malattie dell’Apparato Digerente (CEMAD), Center for Diagnosis and Treatment of Digestive Diseases, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (C.C.); (F.D.V.); (A.D.G.); (A.G.)
| | - Guia Becherucci
- UOS Malattie Infiammatorie Croniche Intestinali, Centro di Malattie dell’Apparato Digerente (CEMAD), Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (G.B.); (F.S.)
| | - Federica Di Vincenzo
- Gastroenterology Department, Centro di Malattie dell’Apparato Digerente (CEMAD), Center for Diagnosis and Treatment of Digestive Diseases, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (C.C.); (F.D.V.); (A.D.G.); (A.G.)
| | - Angelo Del Gaudio
- Gastroenterology Department, Centro di Malattie dell’Apparato Digerente (CEMAD), Center for Diagnosis and Treatment of Digestive Diseases, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (C.C.); (F.D.V.); (A.D.G.); (A.G.)
| | - Marco Pizzoferrato
- UOC Gastroenterologia, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (M.P.); (G.C.)
| | - Giovanni Cammarota
- UOC Gastroenterologia, Dipartimento di Scienze Mediche e Chirurgiche, Fondazione Policlinico Universitario Agostino Gemelli IRCCS, 00168 Rome, Italy; (M.P.); (G.C.)
- Department of Translational Medicine and Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Antonio Gasbarrini
- Gastroenterology Department, Centro di Malattie dell’Apparato Digerente (CEMAD), Center for Diagnosis and Treatment of Digestive Diseases, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (C.C.); (F.D.V.); (A.D.G.); (A.G.)
- Department of Translational Medicine and Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Franco Scaldaferri
- UOS Malattie Infiammatorie Croniche Intestinali, Centro di Malattie dell’Apparato Digerente (CEMAD), Medicina Interna e Gastroenterologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy; (G.B.); (F.S.)
- Department of Translational Medicine and Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
| | - Maria Chiara Mentella
- Department of Translational Medicine and Surgery, Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- UOC di Nutrizione Clinica, Dipartimento Scienze Mediche e Chirurgiche Addominali ed Endocrino-Metaboliche, Fondazione Policlinico Universitario A. Gemelli IRCCS, 00168 Rome, Italy
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3
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Ma L, Zhu Y, Zhu La ALT, Lourenco JM, Callaway TR, Bu D. Schizochytrium sp. and lactoferrin supplementation alleviates Escherichia coli K99-induced diarrhea in preweaning dairy calves. J Dairy Sci 2024; 107:1603-1619. [PMID: 37769949 DOI: 10.3168/jds.2023-23466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 09/04/2023] [Indexed: 10/03/2023]
Abstract
Calf diarrhea, a common disease mainly induced by Escherichia coli infection, is one of the main reasons for nonpredator losses. Hence, an effective nonantibacterial approach to prevent calf diarrhea has become an emerging requirement. This study evaluated the microalgae Schizochytrium sp. (SZ) and lactoferrin (LF) as a nutrient intervention approach against E. coli O101:K99-induced preweaning calve diarrhea. Fifty 1-d-old male Holstein calves were randomly divided into 5 groups (n = 10): (1) control, (2) blank (no supplement or challenge), (3) 1 g/d LF, (4) 20 g/d SZ, or (5) 1 g/d LF plus 20 g/d SZ (LFSZ). The experimental period lasted 14 d. On the morning of d 7, calves were challenged with 1 × 1011 cfu of E. coli O101:K99, and rectum feces were collected on 3, 12, 24, and 168 h postchallenge for the control, LF, SZ, and LFSZ groups. The rectal feces of the blank group were collected on d 14. Data were analyzed using the mixed procedure of SAS (version 9.4; SAS Institute Inc.). The E. coli K99 challenge decreased the average daily gain (ADG) and increased feed-to-gain ratio (F:G) and diarrhea frequency (control vs. blank). Compared with the control group, the LFSZ group had a higher ADG and lower F:G, and the LFSZ and SZ groups had lower diarrhea frequency compared with the control group. In addition, the LFSZ and SZ groups have no differences in diarrhea frequency compared with the blank group. Compared with the control group, the blank group had lower serum nitric oxide (NO), endothelin-1, d-lactic acid (D-LA), and lipopolysaccharide (LPS) concentrations, as well as serum IgG, IL-1β, IL-6, IL-10, and TNF-α levels on d 7 and 14. On d 7, compared with the control group, all treatment groups had lower serum NO level, the SZ group had a lower serum D-LA concentration, and the LF and LFSZ groups had lower serum LPS concentration. On d 14, compared with the control group, the fecal microbiota of the blank group had lower Shannon, Simpson, Chao1, and ACE indexes, the LFSZ group had lower Shannon and Simpson indexes, the SZ and LFSZ groups had a higher Chao1 index, and all treatment groups had a higher ACE index. In fecal microbiota, Bifidobacterium and Actinobacteria were negatively associated with IL-10 and d-lactate, while Akkermansia was negatively associated with endothelin-1 and positively correlated with LPS, fecal scores, and d-lactate levels. Our results indicated that LF and SZ supplements could alleviate E. coli O101:K99-induced calf diarrhea individually or in combination. Supplementing 1 g/d LF and 20 g/d SZ could be a potential nutrient intervention approach to prevent bacterial diarrhea in calves.
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Affiliation(s)
- Lu Ma
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Yingkun Zhu
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; School of Agriculture & Food Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - A La Teng Zhu La
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - J M Lourenco
- Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602
| | - T R Callaway
- Department of Animal and Dairy Science, University of Georgia, Athens, GA 30602
| | - Dengpan Bu
- State Key Laboratory of Animal Nutrition and Feeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; CAAS-ICRAF Joint Lab on Agroforestry and Sustainable Animal Husbandry, World Agroforestry Centre, East and Central Asia, Beijing 100193, China.
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Elefson SK, Stoll B, Davis TA, Fiorotto ML, El-Kadi SW, Genovese K, Thymann T, Sangild PT, Burrin DG. Adverse Metabolic Phenotypes in Parenterally Fed Neonatal Pigs Do Not Persist into Adolescence. J Nutr 2024; 154:638-647. [PMID: 38181968 PMCID: PMC10900187 DOI: 10.1016/j.tjnut.2023.12.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/18/2023] [Accepted: 12/28/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND Nutrition during fetal and neonatal life is an important determinant for the risk of adult-onset diseases, especially type 2 diabetes and obesity. OBJECTIVES We aimed to determine whether total parenteral nutrition (TPN) compared with enteral formula feeding [enteral nutrition (EN)] in term piglets during the first 2 wk after birth would increase the long-term (5-mo) development of metabolic syndrome phenotypes with adverse glucose homeostasis, fatty liver disease, and obesity. METHODS Neonatal female pigs were administered TPN (n = 12) or fed enterally with a liquid enteral milk-replacer formula (EN, n = 12) for 14 d. After transitioning TPN pigs to enteral feeding of liquid formula (days 15-26), both groups were adapted to a solid high-fat diet (30% of the total diet) and sucrose (20% of the total diet) diet (days 27-33), which was fed until the end of the study (140 d). Body composition was measured by dual-energy X-ray absorptiometry at 14, 45, and 140 d. Serum biochemistry and glucose-insulin values (after a fasting intravenous glucose tolerance test) were obtained at 140 d. Liver and muscle were analyzed for insulin receptor signaling and triglycerides. RESULTS Body weight was similar, but percent fat was higher, whereas percent lean and bone mineral density were lower in TPN than in EN pigs (P < 0.01) at 45 d of age but not at 140 d. At 140 d, there were no differences in serum markers of liver injury or lipidemia. Intravenous glucose tolerance test at 140 d showed a lower (P < 0.05) AUC for both glucose and insulin in TPN than in EN pigs, but the ratio of AUCs of insulin and glucose was not different between groups. CONCLUSIONS Administration of TPN during the neonatal period increased adipose deposition that transiently persisted in early adolescence when challenged with a high-fat diet but was not sustained or manifested as glucose intolerance.
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Affiliation(s)
- Sarah K Elefson
- USDA/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Barbara Stoll
- USDA/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Teresa A Davis
- USDA/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Marta L Fiorotto
- USDA/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States
| | - Samer W El-Kadi
- School of Animal Sciences, Virginia Tech, Blacksburg, VA, United States
| | - Kenneth Genovese
- USDA Southern Plains Agricultural Research Center, College Station, TX, United States
| | - Thomas Thymann
- Department of Veterinary and Animal Science, University of Copenhagen, Copenhagen, Denmark
| | - Per T Sangild
- Department of Veterinary and Animal Science, University of Copenhagen, Copenhagen, Denmark
| | - Douglas G Burrin
- USDA/Agricultural Research Service Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States.
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Itani K, Marcussen C, Rocha SDC, Kathiresan P, Mydland LT, Press CM, Xie Z, Tauson AH, Øverland M. Effect of Cyberlindnera jadinii yeast on growth performance, nutrient digestibility, and gut health of broiler chickens from 1 to 34 d of age. Poult Sci 2023; 102:103127. [PMID: 37837676 PMCID: PMC10585334 DOI: 10.1016/j.psj.2023.103127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/13/2023] [Accepted: 09/14/2023] [Indexed: 10/16/2023] Open
Abstract
The effect of dietary graded levels of Cyberlindnera jadinii yeast (C. jadinii) on growth performance, nutrient digestibility, and gut health of broilers was evaluated from 1 to 34 d of age. A total of 360 male broiler chicks were randomly allocated to 1 of 4 dietary treatments (6 replicate pens each) consisting of a wheat-soybean meal-based pelleted diet (Control or CJ0), and 3 diets in which 10% (CJ10), 20% (CJ20), and 30% (CJ30) of the crude protein were supplied by C. jadinii, by gradually replacing protein-rich ingredients. Body weight and feed intake were measured at d 1, 11, 22, and 32. Pellet temperature, durability, and hardness increased linearly (P < 0.05) with C. jadinii inclusion, with highest (P < 0.05) values for CJ30. Up until d 22, feed conversion ratio (FCR) was similar between treatments (P = 0.169). Overall, increasing C. jadinii inclusion linearly increased (P = 0.047) feed intake but had no effect on weight gain or mortality. FCR increased (P < 0.05) linearly with increasing C. jadinii inclusion but only birds fed CJ30 had a significantly poorer FCR compared to the Control. Ileal digestibility was not affected by C. jadinii inclusion, however, there was a significant linear decrease in crude protein and phosphorus, and a tendency for a decrease in fat digestibility. Apparent metabolizable energy (AME) decreased (P < 0.001) quadratically with increasing C. jadinii and was significantly lower in CJ30 compared to the Control. Ileal concentrations of volatile fatty acids (VFAs) were not affected by C. jadinii inclusion, but butyric acid and total VFAs were linearly and quadratically increased and were significantly higher in cecal digesta of birds fed CJ20 and CJ30. Increasing C. jadinii inclusion was associated with an increase (P < 0.05) in the relative abundance of lactobacillus in the ileum and cecum. In conclusion, C. jadinii yeast can supply up to 20% of the total dietary protein without negatively affecting performance, digestibility, or gut health of broilers. The potential confounding role of feed processing and C. jadinii cell wall components on broiler performance is discussed.
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Affiliation(s)
- Khaled Itani
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Caroline Marcussen
- Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Gronnegärdsvej 3, 1870 Frederiksberg C, Denmark; Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Dyrlagevej 16, 1870 Frederiksberg C, Denmark
| | - Sérgio D C Rocha
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Purushothaman Kathiresan
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Liv Torunn Mydland
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Charles McLean Press
- Department of Preclinical Sciences and Pathology, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway
| | - Zhuqing Xie
- Department of Food Science, Faculty of Science, University of Copenhagen, Rolighedsvej 26,1958 Frederiksberg C, Denmark
| | - Anne-Helene Tauson
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway; Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Gronnegärdsvej 3, 1870 Frederiksberg C, Denmark
| | - Margareth Øverland
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, P.O. Box 5003, 1432 Aas, Norway.
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Nicola MS, Kalb AL, Barbosa AA, Velasquez BES, Rincon JAA, Feijó JO, Dellagostin EN, Martins AWS, Blödorn EB, Domingues WB, Lopes F, Quinteiro-Filho WM, Mondadori RG, Campos VF, Rabassa VR, Komninou ER, Delpino FAB, Corrêa MN. Butyrate supplementation in the liquid diet of dairy calves leads to a rapid recovery from diarrhea and reduces its occurrence and relapses in the preweaning period. J Dairy Sci 2023; 106:7908-7923. [PMID: 37164858 DOI: 10.3168/jds.2022-22670] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Accepted: 04/11/2023] [Indexed: 05/12/2023]
Abstract
The present study aimed to evaluate the effect of continuous butyrate administration in dairy calves' liquid diet considering diarrhea, metabolic profile, gastrointestinal development, and corporal growth. Immediately after birth, calves were randomly allocated into 2 groups of 62 calves (50 females and 12 males), with access to water and a solid feed ad libitum. The butyrate group (BG) received 4 g/d of sodium butyrate (Admix Easy, Adisseo) diluted in the whole milk, and the control group (CG) received whole milk with no supplementation. Sodium butyrate was administered from d 1 of life until the weaning at 90 d. Feces consistency was assessed daily for the first 30 d of life and characterized by scores from 0 to 4 (0 and 1 for normal, and 2, 3, and 4 for abnormal feces). Diarrhea was diagnosed when the animals had abnormal feces and fever. Morbidity, recurrence, mortality, and lethality data were recorded and compared between the groups. Average daily gain (ADG) and corporal growth (body weight, thoracic perimeter, height at the withers, and croup width) were evaluated weekly, from the first day to d 30, and later at 45, 60, and 90 d of life. Blood samples were taken weekly for up to 30 d to determine the circulating levels of total calcium, phosphorus, chloride, bicarbonate, glucose, β-hydroxybutyrate, and nonesterified fatty acids. The males were euthanized at 15 (n = 6 per group) and 30 d (n = 6 per group) for morphometric, histological, and gene expression analysis of the gastrointestinal tract. The results showed that the BG had a lower rate of morbidity (BG = 30% vs. CG = 50%) and recurrence (BG = 26.7% vs. CG = 60%) of diarrhea than the CG. In addition, the BG had abnormal feces for a shorter period (BG = 4.64 ± 0.47 d vs. CG = 8.6 ± 0.65 d). The ADG tended to be higher in BG than CG up to 30 and 60 d. Metabolic evaluations showed the lowest levels of glucose and highest levels of nonesterified fatty acids in BG. On d 30 of life, rumen papillae length, papilla area, duodenum villus length, and crypt depth were higher in BG than in CG. The duodenal gene expression at 30 d showed that animals with diarrhea episodes that did not receive butyrate had the highest levels of transcripts for the LCT and GLP2 genes. In addition, in different ways, both butyrate and neonatal diarrhea affected the gene expression of IGF1, SLC5A1, and AQP3. These results allow us to conclude that continuous supplementation with sodium butyrate improves gastrointestinal development, reduces the occurrence of diarrhea, and makes clinical conditions milder with faster recovery, favoring a higher ADG in the first 30 and 60 d of life. Based on these results, we conclude that sodium butyrate can be indicated for liquid diet supplementation to accelerate gastrointestinal tract development and prevent severe cases of neonatal diarrhea, tending to improve average daily gain until weaning.
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Affiliation(s)
- M S Nicola
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil.
| | - A L Kalb
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - A A Barbosa
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - B E S Velasquez
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - J A A Rincon
- Facultad de Ciencias Agropecuarias, Universidad de La Salle, Yopal, Casanare 850008, Colombia
| | - J O Feijó
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - E N Dellagostin
- Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia (PPGBio), Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - A W S Martins
- Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia (PPGBio), Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - E B Blödorn
- Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia (PPGBio), Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - W B Domingues
- Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia (PPGBio), Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - F Lopes
- Adisseo Brasil Nutrição Animal, São Paulo, 05804-900, Brazil
| | | | - R G Mondadori
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - V F Campos
- Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia (PPGBio), Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - V R Rabassa
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - E R Komninou
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil; Laboratório de Genômica Estrutural, Programa de Pós-Graduação em Biotecnologia (PPGBio), Centro de Desenvolvimento Tecnológico (CDTec), Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - F A B Delpino
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
| | - M N Corrêa
- NUPEEC (Núcleo de Pesquisa, Ensino e Extensão em Pecuária), Programa de Pós-Graduação em Veterinária (PPGV), Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-610, Pelotas, RS, Brazil
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McConn BR, Kpodo KR, Rivier JE, Behan DP, Richert BT, Radcliffe JS, Lay DC, Johnson JS. Interactions between corticotropin releasing factor signaling and prophylactic antibiotics on measures of intestinal function in weaned and transported pigs. Front Physiol 2023; 14:1266409. [PMID: 37908333 PMCID: PMC10615255 DOI: 10.3389/fphys.2023.1266409] [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: 07/24/2023] [Accepted: 09/29/2023] [Indexed: 11/02/2023] Open
Abstract
The study objective was to evaluate the interaction between corticotrophin releasing factor (CRF) receptor signaling and prophylactic antibiotic administration on intestinal physiology in newly weaned and transported pigs. Pigs (n = 56; 5.70 ± 1.05 kg) were weaned (20.49 ± 0.64 d), a blood sample was taken, and then pigs were given an intraperitoneal injection of saline (SAL; n = 28 pigs) or a CRF receptor antagonist (CRFA; n = 28 pigs; 30 μg/kg body weight; Astressin B), and then were transported in a livestock trailer for 12 h and 49 min. A second and third intraperitoneal injection was given at 4 h 42 min and 11 h 36 min into the transport process, respectively. Following transport, 4 SAL and 4 CRFA pigs were blood sampled and euthanized. The remaining 48 pigs were individually housed and given dietary antibiotics [AB; n = 12 SAL and 12 CRFA pigs; chlortetracycline (441 ppm) + tiamulin (38.6 ppm)] or no dietary antibiotics (NAB; n = 12 SAL and 12 CRFA pigs) for 14 d post-transport. Blood was collected at 12 h and on d 3, 7, and 14, and then pigs were euthanized on d 7 (n = 24) and d 14 (n = 24) post-weaning and transport. Circulating cortisol was reduced (p = 0.05) in CRFA pigs when compared to SAL pigs post-weaning and transport. On d 7, jejunal villus height and crypt depth was greater overall (p < 0.05) in AB-fed pigs versus NAB-fed pigs. On d 14, ileal crypt depth was reduced (p = 0.02) in CRFA pigs when compared to SAL pigs. Jejunal CRF mRNA abundance tended to be reduced (p = 0.09) on d 7 in CRFA pigs versus SAL pigs. On d 14, jejunal tumor necrosis factor-alpha was reduced (p = 0.01) in AB-fed pigs versus NAB-fed pigs. On d 7, change in glucose short-circuit current tended to be increased (p = 0.07) in CRFA pigs fed the AB diet when compared to CRFA pigs fed the NAB diet. In conclusion, CRFA pigs and pigs fed AB had some similar biological intestinal function measures post-weaning and transport.
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Affiliation(s)
- Betty R. McConn
- Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN, United States
| | | | - Jean E. Rivier
- Sentia Medical Sciences Inc, San Diego, CA, United States
| | | | | | | | - Donald C. Lay
- Livestock Behavior Research Unit, Agricultural Research Service (USDA), West Lafayette, IN, United States
| | - Jay S. Johnson
- Livestock Behavior Research Unit, Agricultural Research Service (USDA), West Lafayette, IN, United States
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8
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Trotta RJ, Swanson KC, Klotz JL, Harmon DL. Postruminal Casein Infusion and Exogenous Glucagon-Like Peptide 2 Administration Differentially Stimulate Pancreatic α-Amylase and Small Intestinal α-Glucosidase Activity in Cattle. J Nutr 2023; 153:2854-2867. [PMID: 37573014 DOI: 10.1016/j.tjnut.2023.08.009] [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: 05/19/2023] [Revised: 08/01/2023] [Accepted: 08/04/2023] [Indexed: 08/14/2023] Open
Abstract
BACKGROUND Increasing luminal carbohydrate flow decreases pancreatic α-amylase activity but can increase jejunal maltase activity, suggesting that regulation of carbohydrase activity is perhaps uncoordinated in response to luminal carbohydrate flow. Increasing luminal casein flow increases pancreatic α-amylase activity in cattle, and exogenous glucagon-like peptide 2 (GLP-2) has been shown to increase small intestinal α-glucosidase activity in nonruminants. OBJECTIVES The objective was to evaluate the effects of postruminal casein infusion, exogenous GLP-2, or their combination on endogenous pancreatic and small intestinal carbohydrase activity in cattle postruminally infused with starch. METHODS Holstein steers [n = 24; 250 ± 23 kg body weight (BW)] received a continuous abomasal infusion of 3.94 g raw corn starch/kg of BW combined with either 0 or 1.30 g casein/kg of BW. Steers received subcutaneous injections in 2 equal portions daily of excipient (0.5% bovine serum albumin) or 100 μg GLP-2/kg of BW per day. At the end of the 7-d treatment period, steers were slaughtered for tissue collection. Data were analyzed using the MIXED procedure of SAS version 9.4 (SAS Institute Inc.). RESULTS Postruminal casein infusion increased (P ≤ 0.03) pancreatic mass by 12.6%, total pancreatic α-amylase activity by 50%, and postruminal starch disappearance from 96.7% to 99.3%. Exogenous GLP-2 increased (P < 0.01) total small intestinal and mucosal mass by 1.2 kg and 896 g, respectively. Relative to control, GLP-2 and casein + GLP-2 increased (P = 0.04) total small intestinal α-glucosidase activity by 83.5%. Total small intestinal maltase, isomaltase, and glucoamylase activity was 90%, 100%, and 66.7% greater for GLP-2 and casein + GLP-2 steers compared with control. CONCLUSIONS Casein increased pancreatic α-amylase activity, GLP-2 increased small intestinal α-glucosidase activity, and the combination of casein and GLP-2 increased both pancreatic α-amylase activity and small intestinal α-glucosidase activity. This novel approach provides an in vivo model to evaluate effects of increasing endogenous carbohydrase activity on small intestinal starch digestion.
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Affiliation(s)
- Ronald J Trotta
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States
| | - Kendall C Swanson
- Department of Animal Science, North Dakota State University, Fargo, ND, United States
| | - James L Klotz
- Forage-Animal Production Research Unit, USDA, ARS, Lexington, KY, United States
| | - David L Harmon
- Department of Animal and Food Sciences, University of Kentucky, Lexington, KY, United States.
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9
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Ramírez-Perdomo A, Márquez-Barrios G, Gutiérrez-Castañeda LD, Parra-Medina R. NEUROENDOCRINE PEPTIDES IN THE PATHOGENESIS OF COLORECTAL CARCINOMA. Exp Oncol 2023; 45:3-16. [PMID: 37417286 DOI: 10.15407/exp-oncology.2023.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2023] [Indexed: 07/08/2023]
Abstract
Colorectal carcinoma (CRC) is the third most frequent neoplasm worldwide and the second leading cause of mortality. Neuroendocrine peptides such as glucagon, bombesin, somatostatin, cholecystokinin, and gastrin as well as growth factors such as platelet-derived growth factor, epidermal growth factor, insulin-like growth factor, and fibroblast growth factor have been postulated as being involved in carcinogenesis. The fact that these neuroendocrine peptides are involved in the development of CRC through the activation of growth factors that stimulate a series of molecular pathways that activate oncogenic signaling mechanisms is emphasized in this review. Peptides such as CCK1, serotonin, and bombesin have been found to be over-expressed in human tumor tissues. Meanwhile, the expression of peptides such as GLP2 has been seen mainly in murine models. The information contained in this review provides a better understanding of the role these peptides play in the pathogenesis of CRC for basic and clinical science studies.
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Affiliation(s)
- A Ramírez-Perdomo
- Pathology, University Foundation of Health Sciences, Bogota Calle 10 #18-75, ColombiaPathology, University Foundation of Health Sciences, Bogota Calle 10 #18-75, Colombia
| | - G Márquez-Barrios
- Pathology, University Foundation of Health Sciences, Bogota Calle 10 #18-75, Colombia
| | - L D Gutiérrez-Castañeda
- Basic Health Sciences Group, University Foundation of Health Sciences, Bogota, Colombia
- Research Institute, University Foundation of Health Sciences (FUCS), Bogotá, Colombia
| | - R Parra-Medina
- Pathology Department, University Foundation of Health Sciences (FUCS), Bogota Calle 10 #18-75, Colombia
- Research Institute, University Foundation of Health Sciences, Bogota, Colombia
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10
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Kounatidis D, Vallianou NG, Tsilingiris D, Christodoulatos GS, Geladari E, Stratigou T, Karampela I, Dalamaga M. Therapeutic Potential of GLP-2 Analogs in Gastrointestinal Disorders: Current Knowledge, Nutritional Aspects, and Future Perspectives. Curr Nutr Rep 2022; 11:618-642. [PMID: 35933503 DOI: 10.1007/s13668-022-00433-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2022] [Indexed: 01/31/2023]
Abstract
PURPOSE OF REVIEW Although Glucagon-like peptide (GLP)-1 receptor agonists have been used for almost two decades in the treatment of diabetes mellitus type 2 and, lately, in obesity, recent years have seen an increasing interest in the pharmacological agonism of other proglucagon-derived peptides, including GLP-2. Herein, we aimed to review the available evidence on the effects of GLP-2 agonism from animal and clinical studies. Furthermore, we summarize the current clinical applications of GLP-2 agonists among patients with intestinal failure associated with short bowel syndrome (SBS-IF) as well as potential future expansion of their indications to other intestinal disorders. RECENT FINDINGS Evidence from preclinical studies has highlighted the cellular trophic and functional beneficial actions of GLP-2 on small intestinal and colonic mucosa. Subsequently, pharmacologic agonism of GLP-2 has gathered interest for the treatment of patients with conditions pertaining to the loss of intestinal anatomical and/or functional integrity to a degree requiring parenteral support, collectively referred to as intestinal failure. GLP-2 analogs positively influence nutrient absorption in animal models and humans, although continued therapy is likely needed for sustained effects. The degradation-resistant GLP-2-analog teduglutide has received approval for the treatment of SBS-IF, in which it may decisively reduce patient dependency on parenteral support and improve quality of life. Another two longer-acting analogs, glepaglutide and apraglutide, are currently undergoing phase III clinical trials. The use of GLP-2 analogs is effective in the management of SBS-IF and may show promise in the treatment of other severe gastrointestinal disorders associated with loss of effective intestinal resorptive surface area.
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Affiliation(s)
- Dimitris Kounatidis
- Departments of Internal Medicine and Endocrinology, Evangelismos General Hospital, 45-47 Ypsilantou Street, 10676, Athens, Greece
| | - Natalia G Vallianou
- Departments of Internal Medicine and Endocrinology, Evangelismos General Hospital, 45-47 Ypsilantou Street, 10676, Athens, Greece.
| | - Dimitrios Tsilingiris
- First Department of Propaedeutic Internal Medicine, School of Medicine, National and Kapodistrian University of Athens, Laiko General Hospital, 17 St Thomas Street, 11527, Athens, Greece
| | - Gerasimos Socrates Christodoulatos
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Goudi, 11527, Athens, Greece
| | - Eleni Geladari
- Departments of Internal Medicine and Endocrinology, Evangelismos General Hospital, 45-47 Ypsilantou Street, 10676, Athens, Greece
| | - Theodora Stratigou
- Departments of Internal Medicine and Endocrinology, Evangelismos General Hospital, 45-47 Ypsilantou Street, 10676, Athens, Greece
| | - Irene Karampela
- 2nd Department of Critical Care, Medical School, University of Athens, Attikon General University Hospital, 1 Rimini Street, Chaidari, 12462, Athens, Greece
| | - Maria Dalamaga
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias, Goudi, 11527, Athens, Greece.
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11
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Ramsay TG, Arfken AM, Summers KL. Enteroendocrine peptides, growth, and the microbiome during the porcine weaning transition. Anim Microbiome 2022; 4:56. [DOI: 10.1186/s42523-022-00206-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 09/28/2022] [Indexed: 11/19/2022] Open
Abstract
Abstract
Background
Growth rate in pigs can be affected by numerous factors that also affect feeding behavior and the microbiome. Recent studies report some communication between the microbiome and the enteroendocrine system. The present study examined if changes in the piglet microbiome between birth and during the weaning transition can be correlated either positively or negatively with growth rate and plasma concentrations of enteroendocrine peptides.
Results
During the post-weaning transition, a 49% reduction in average daily gain was observed at day 24 (P < 0.05) relative to day 21. Pigs recovered by day 28 with body weight and average daily gain increases of 17% and 175%, respectively relative to day 24 and the highest rate of gain was measured at day 35 (462 g/day). The time interval between day 21–24 had the highest number of correlations (n = 25) between the relative abundance differences in taxa over time and corresponding percent weight gain. Amplicon sequence variants with the greatest correlation with percent weight gain between day 21–24 belonged to families Prevotellaceae NK3B31 (ρ = 0.65, P < 0.001), Veillonellaceae (ρ = 0.63, P < 0.001) and Rikenellaceae RC9 (ρ = 0.62, P < 0.001). Seven taxa were positively correlated with percent weight gain between day 24–28. Eight taxa were positively correlated with percent weight gain between day 28–35, of which four were Clostridia. Only Lactobacillus reuteri was positively correlated across both day 24–28 and day 28–35 analyses. Insulin-like growth factor 1 (IGF-1; R2 = 0.61, P < 0.001), glucose-dependent insulinotropic polypeptide (GIP; R2 = 0.20, P < 0.001), glucagon-like peptide 1 (GLP-1; R2 = 0.51, P < 0.001), and glucagon-like peptide 2 (GLP-2; R2 = 0.21, P < 0.001) were significantly associated with the piglet fecal community NMDS, while serotonin showed no significant association (R2 = 0.03, P = 0.15). Higher concentrations of GLP-1 and GLP-2 characterized day 1 fecal communities, while GIP levels had the strongest relationship primarily with samples ordinated with the day 21 cluster.
Conclusions
Demonstration of an association of certain taxa with individual gut peptides at specific ages suggests the potential for the microbiome to elicit changes in the gut enteroendocrine system during early postnatal development in the pig.
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12
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Duttlinger AW, Centeno Martinez RE, McConn BR, Kpodo KR, Lay DC, Richert BT, Johnson TA, Johnson JS. Replacing dietary antibiotics with 0.20% l-glutamine in swine nursery diets: impact on intestinal physiology and the microbiome following weaning and transport. J Anim Sci 2021; 99:6182313. [PMID: 33755169 DOI: 10.1093/jas/skab091] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 03/22/2021] [Indexed: 11/13/2022] Open
Abstract
Previous research demonstrates that supplementing 0.20% l-glutamine (GLN) in the diets of newly weaned and transported pigs improves growth rate to a similar extent as providing dietary antibiotics (AB). However, research comparing the effects of GLN vs. AB on intestinal physiology and the microbiome is limited. Therefore, the study objective was to compare the effects of supplementing nursery diets with GLN, AB, or no dietary antibiotics (NA) on intestinal physiology and the microbiome of pigs in a production environment following weaning and transport. Mixed-sex piglets (N = 480; 5.62 ± 0.06 kg body weight [BW]) were weaned (18.4 ± 0.2 d of age) and transported for 12 h in central Indiana, for two replicates, during the summer of 2016 and the spring of 2017. Pens were blocked by BW and allotted to one of the three dietary treatments (n = 10 pens/dietary treatment/replicate [8 pigs/pen]): AB (chlortetracycline [441 ppm] + tiamulin [38.6 ppm]), GLN (0.20% as-fed), or NA fed for 14 d. From day 14 to 34, pigs were fed common AB-free diets in two phases. On day 33, villus height:crypt depth tended to be increased (P = 0.07; 7.0%) in GLN and AB pigs vs. NA pigs. On day 33, glucagon-like peptide 2 (GLP-2) mRNA abundance was decreased (P = 0.01; 50.3%) in GLN and NA pigs vs. AB pigs. Crypt depth was increased overall on day 33 (P = 0.01; 16.2%) during the spring replicate compared with the summer replicate. Villus height:crypt depth was reduced (P = 0.01; 9.6%) during the spring replicate compared with the summer replicate on day 33. On day 13, tumor necrosis factor-alpha and occludin mRNA abundance was increased (P ≤ 0.04; 45.9% and 106.5%, respectively) and zonula occludens-1 mRNA abundance tended to be greater (P = 0.10; 19.2%) in the spring replicate compared with the summer replicate. In addition, AB pigs had increased (P = 0.01; 101.3%) GLP-2 mRNA abundance compared with GLN and NA pigs. Microbiome analysis indicated that on day 13, dietary treatment altered the microbiota community structure (P = 0.03). Specifically, the AB pigs tended to be distinct from both the NA and GLN pigs (P = 0.08), and Lactobacillus was increased nearly 2-fold in AB compared with NA pigs (q = 0.04) and GLN pigs (q = 0.22). In conclusion, GLN supplementation tended to improve some morphological markers of intestinal health similarly to AB pigs, while the microbiome composition in GLN pigs was more similar to NA pigs than AB pigs.
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Affiliation(s)
- Alan W Duttlinger
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA.,USDA-ARS Livestock Behavior Research Unit, West Lafayette, IN 47907, USA
| | | | - Betty R McConn
- Oak Ridge Institute for Science and Education, Oak Ridge, TN 37830, USA
| | - Kouassi R Kpodo
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Donald C Lay
- USDA-ARS Livestock Behavior Research Unit, West Lafayette, IN 47907, USA
| | - Brian T Richert
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Timothy A Johnson
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Jay S Johnson
- USDA-ARS Livestock Behavior Research Unit, West Lafayette, IN 47907, USA
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13
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Haisan J, Inabu Y, Shi W, Oba M. Effects of pre- and postpartum dietary starch content on productivity, plasma energy metabolites, and serum inflammation indicators of dairy cows. J Dairy Sci 2021; 104:4362-4374. [PMID: 33485683 DOI: 10.3168/jds.2020-19611] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 11/01/2020] [Indexed: 12/22/2022]
Abstract
The objective of this study was to evaluate the effects of the starch content of pre- and postpartum diets on productivity, plasma energy metabolites, and serum markers of inflammation of dairy cows during the calving transition period. Eighty-eight primiparous and multiparous cows were randomly assigned to pre- and postpartum dietary treatments balanced for parity and pretrial body condition score at d 28 ± 3 before expected calving date. Cows were fed either a control [Control; 14.0% starch, dry matter (DM) basis] or high-starch (High; 26.1% starch, DM basis) prepartum diet commencing 28 ± 3 d before expected calving date. Following calving, cows were fed either a high-fiber (HF; 33.8% neutral detergent fiber, 25.1% starch, DM basis) or high-starch (HS; 27.2% neutral detergent fiber, 32.8% starch, DM basis) postpartum diet for the first 20 ± 2 d following calving. Cows fed the High prepartum diet had greater DM intake (12.4 vs. 10.2 kg/d), plasma concentrations of insulin (1.72 vs. 14.2 ng/mL), glucose (68.1 vs. 65.0 mg/dL), and glucagon-like peptide-2 (0.41 vs. 0.32 ng/mL) before parturition, but increased plasma free fatty acid concentration (452 vs. 363 µEq/L) and milk fat yield (1.64 vs. 1.48 kg/d) after parturition. Cows fed the HS postpartum diet had lower plasma free fatty acid (372 vs. 442 µEq/L) and serum haptoglobin (0.46 vs. 0.70 mg/mL) concentrations over a 3-wk period after calving. In addition, there was a tendency for interaction between prepartum and postpartum diets for milk yield, where feeding the HS postpartum diet increased milk yield compared with the HF diet for cows fed the Control prepartum diet (40.8 vs. 37.9 kg/d) but not for cows fed the High prepartum diet. These results suggest that management efforts to minimize the change in diet fermentability during the calving transition by feeding the High prepartum diet, the HF postpartum diet, or both did not increase productivity of dairy cows but increased fat mobilization after calving. Our findings also suggest that feeding high-starch postpartum diets can decrease fat mobilization and serum indicators of systemic inflammation and increase milk production even with the transition from a low-starch prepartum diet.
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Affiliation(s)
- J Haisan
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5
| | - Y Inabu
- The Research Center for Animal Science, Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, Japan 739-8528
| | - W Shi
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5
| | - M Oba
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5.
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14
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Hunt JE, Yassin M, Olsen J, Hartmann B, Holst JJ, Kissow H. Intestinal Growth in Glucagon Receptor Knockout Mice Is Not Associated With the Formation of AOM/DSS-Induced Tumors. Front Endocrinol (Lausanne) 2021; 12:695145. [PMID: 34108943 PMCID: PMC8181411 DOI: 10.3389/fendo.2021.695145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Accepted: 05/03/2021] [Indexed: 12/22/2022] Open
Abstract
Treatment with exogenous GLP-2 has been shown to accelerate the growth of intestinal adenomas and adenocarcinomas in experimental models of colonic neoplasia, however, the role of endogenous GLP-2 in tumor promotion is less well known. Mice with a global deletion of the glucagon receptor (Gcgr-/-) display an increase in circulating GLP-1 and GLP-2. Due to the intestinotrophic nature of GLP-2, we hypothesized that Gcgr-/- mice would be more susceptible to colonic dysplasia in a model of inflammation-induced colonic carcinogenesis. Female Gcgr-/- mice were first characterized for GLP-2 secretion and in a subsequent study they were given a single injection with the carcinogen azoxymethane (7.5 mg/kg) and treated with dextran sodium sulfate (DSS) (3%) for six days (n=19 and 9). A cohort of animals (n=4) received a colonoscopy 12 days following DSS treatment and all animals were sacrificed after six weeks. Disruption of glucagon receptor signaling led to increased GLP-2 secretion (p<0.0001) and an increased concentration of GLP-2 in the pancreas of Gcgr-/- mice, coinciding with an increase in small intestinal (p<0.0001) and colonic (p<0.05) weight. Increased villus height was recorded in the duodenum (p<0.001) and crypt depth was increased in the duodenum and jejunum (p<0.05 and p<0.05). Disruption of glucagon receptor signaling did not affect body weight during AOM/DSS treatment, neither did it affect the inflammatory score assessed during colonoscopy or the number of large and small adenomas present at the end of the study period. In conclusion, despite the increased endogenous GLP-2 secretion Gcgr-/- mice were not more susceptible to AOM/DSS-induced tumors.
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Affiliation(s)
- Jenna Elizabeth Hunt
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mohammad Yassin
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jørgen Olsen
- Department of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Bolette Hartmann
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Jens Juul Holst
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Hannelouise Kissow
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- *Correspondence: Hannelouise Kissow,
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15
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Qi KK, Wu J, Wen Jun Z, Bo D, Xu ZW. Catch-up growth in intrauterine growth-restricted piglets associated with the restore of pancreatic and intestinal functions via porcine glucagon-like peptide-2 microspheres. Arch Anim Nutr 2020; 74:462-475. [PMID: 33076701 DOI: 10.1080/1745039x.2020.1833598] [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] [Indexed: 02/04/2023]
Abstract
Intrauterine growth restriction (IUGR) results in abnormal morphology and gastrointestinal function, such as reduced villi height and crypt depth, thinner mucosa and muscle layers, and reduced brush border enzyme activities, delayed gastric emptying, increased stress response. As a gastrointestinal growth factor, the manner by which the porcine glucagon-like peptide-2 (pGLP-2) microsphere administration restored the gastrointestinal function and growth performance of IUGR piglets was investigated. Fourteen newborn Duroc × (Yorkshire × Landrace) IUGR piglets (0.92 ± 0.113 kg) were assigned into the IUGR (negative control group) and pGLP-2 microsphere groups. The piglets in group pGLP-2 were intraperitoneally administered with 100 mg pGLP-2 microspheres on day 1 after birth. From days 15 to 26 of trial, the body weight of the pGLP-2 group was significantly higher than that of the control. IUGR piglets of group pGLP-2 showed a significantly increased pancreas weight, serum insulin content and activity of lipase and amylase. Injection of pGLP-2 microspheres restored the intestinal absorptive capacity by significantly increasing the mRNA expression of the sodium-glucose cotransporter 1 in the jejunum and the peptide transporter 1 in the jejunum. It also restored the redox balance by increasing the catalase mRNA expression and decreasing the heat shock protein 70 mRNA expression. In addition, this improvement was associated with the significant increase in gut diameter, length and weight. Therefore, it was concluded that the injection of pGLP-2 microspheres was a suitable therapeutic strategy for compensatory growth in low birth weight IUGR piglets.
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Affiliation(s)
- Ke Ke Qi
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences , Hangzhou, China
| | - Jie Wu
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences , Hangzhou, China
| | - Zhou Wen Jun
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences , Hangzhou, China
| | - Deng Bo
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences , Hangzhou, China
| | - Zi Wei Xu
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences , Hangzhou, China
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16
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Wei X, Zhang L, Zhang R, Wu R, Si D, Ahmad B, Petitte JN, Mozdziak PE, Li Z, Guo H, Zhang M. A highly efficient hybrid peptide ameliorates intestinal inflammation and mucosal barrier damage by neutralizing lipopolysaccharides and antagonizing the lipopolysaccharide-receptor interaction. FASEB J 2020; 34:16049-16072. [PMID: 33058296 DOI: 10.1096/fj.201903263rrr] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 09/25/2020] [Accepted: 09/28/2020] [Indexed: 12/13/2022]
Abstract
Intestinal inflammatory disorders, such as inflammatory bowel disease, are major contributors to mortality and morbidity in humans and animals worldwide. While some native peptides have great potential as therapeutic agents against intestinal inflammation, potential cytotoxicity, anti-inciting action, and suppression of anti-inflammatory activity may limit their development as anti-inflammatory agents. Peptide hybridization is an effective approach for the design and engineering of novel functional peptides because hybrid peptides combine the advantages and benefits of various native peptides. In the present study, a novel hybrid anti-inflammatory peptide that combines the active center of Cecropin A (C) and the core functional region of LL-37 (L) was designed [C-L peptide; C (1-8)-L (17-30)] through in silico analysis to reduce cytotoxicity and improve the anti-inflammatory activity of the parental peptides. The resulting C-L peptide exhibited lower cytotoxicity than either C or L peptides alone. C-L also exerted a protective effect against lipopolysaccharide (LPS)-induced inflammatory responses in RAW264.7 macrophages and in the intestines of a mouse model. The hybrid peptide exhibited increased anti-inflammatory activity compared to the parental peptides. C-L plays a role in protecting intestinal tissue from damage, LPS-induced weight loss, and leukocyte infiltration. In addition, C-L reduces the expression levels of tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), IL-1β, and interferon-gamma (IFN-γ), as well as reduces cell apoptosis. It also reduced mucosal barrier damage caused by LPS. The anti-inflammatory effects of the hybrid peptide were mainly attributed to its LPS-neutralizing activity and antagonizing the activation of LPS-induced Toll-like receptor 4-myeloid differentiation factor 2 (TLR4/MD2). The peptide also affected the TLR4-(nuclear factor κB) signaling pathway, modulating the inflammatory response upon LPS stimulation. Collectively, these findings suggest that the newly designed peptide, C-L, could be developed into a novel anti-inflammatory agent for animals or humans.
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Affiliation(s)
- Xubiao Wei
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Lulu Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Rijun Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Rujuan Wu
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dayong Si
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Baseer Ahmad
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - James N Petitte
- College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC, USA
| | - Paul E Mozdziak
- College of Agriculture and Life Sciences, North Carolina State University, Raleigh, NC, USA
| | - Zhongxuan Li
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Henan Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Manyi Zhang
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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17
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Chang Y, Deng Q, Zhang Z, Zhao H, Tang J, Chen X, Liu G, Tian G, Cai J, Jia G. Glucagon-like peptide 2 attenuates intestinal mucosal barrier injury through the MLCK/pMLC signaling pathway in a piglet model. J Cell Physiol 2020; 236:3015-3032. [PMID: 32960454 DOI: 10.1002/jcp.30068] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 09/03/2020] [Accepted: 09/08/2020] [Indexed: 12/17/2022]
Abstract
Glucagon-like peptide-2 (GLP-2), an intestinotrophic hormone, has drawn considerable attention worldwide due to its potential to promote intestinal development. We investigated the effects and mechanisms of GLP-2 against lipopolysaccharide (LPS)-induced intestinal inflammation and injury both in vitro and in vivo. Forty healthy piglets weaned at the age of 28 days with similar body weight (BW) were assigned to four in vivo treatments with ten piglets each: (i) nonchallenged control; (ii) LPS-challenged control; (iii) LPS + low dose GLP-2; and (iv) LPS + high dose GLP-2. Piglets were subcutaneously injected with phosphate-buffered saline supplemented with GLP-2 at doses of 0, 0, 2, and 10 nmol/kg BW per day for seven consecutive days. The piglets were challenged with an intraperitoneal injection with 100 μg/kg LPS on day 14 to induce intestinal damage. After that, the gene and protein expression levels of representative tight junction proteins and myosin light-chain kinase (MLCK)/phosphorylated myosin light chain (pMLC), as well as proinflammatory cytokine levels were determined using quantitative reverse transcription polymerase chain reaction, western blot, and enzyme-linked immunosorbent assay methods. A high dose of GLP-2 pretreatment increased intestinal permeability by downregulating and redistributing tight junction proteins (p < .05), for example, zona occluden-1 (ZO-1) and occludin. GLP-2 decreased the transcription of proinflammatory cytokines genes including interleukin-1β (IL-1β), IL-6, IL-8, and tumor necrosis factor-α in small intestines (p < .05). GLP-2 prevented the LPS-induced increase in the expression of MLCK dose-dependently and the increase in pMLC levels in the duodenum, jejunum, and ileum. To assess further the protective effect of GLP-2 on LPS-induced intestinal barrier injury after weaning and its possible mechanism, an in vitro intestinal epithelial barrier model was established with IPEC-J2 monolayers and treated with 100 μg/ml LPS with or without 1 × 10-8 mol/L GLP-2 pretreatment. The in vitro analysis included control, LPS, and GLP-2 + LPS treatments. GLP-2 treatment alleviated the destructive effect of LPS on barrier permeability by restoring the expression and ultrastructure of ZO-1 and occludin (p < .05). In addition, GLP-2 reversed the LPS-induced MLCK hyperexpression and pMLC hyperphosphorylation (p < .05). Taken together, our findings revealed a mechanism by which GLP-2 alleviated LPS-challenged intestinal barrier injury and inflammation in weaned piglets and IPEC-J2 cells via the MLCK/pMLC signaling pathway.
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Affiliation(s)
- Yaqi Chang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Qiuhong Deng
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Zhenyu Zhang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China.,Meishan Vocational Technical College, Meishan, China
| | - Hua Zhao
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Jiayong Tang
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Xiaoling Chen
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Guangmang Liu
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Gang Tian
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Jingyi Cai
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
| | - Gang Jia
- Institute of Animal Nutrition, Sichuan Agricultural University, Chengdu, Sichuan, China.,Key Laboratory of Animal Disease-resistant Nutrition, Chengdu, China
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18
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Burrin D, Sangild PT, Stoll B, Thymann T, Buddington R, Marini J, Olutoye O, Shulman RJ. Translational Advances in Pediatric Nutrition and Gastroenterology: New Insights from Pig Models. Annu Rev Anim Biosci 2020; 8:321-354. [PMID: 32069436 DOI: 10.1146/annurev-animal-020518-115142] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Pigs are increasingly important animals for modeling human pediatric nutrition and gastroenterology and complementing mechanistic studies in rodents. The comparative advantages in size and physiology of the neonatal pig have led to new translational and clinically relevant models of important diseases of the gastrointestinal tract and liver in premature infants. Studies in pigs have established the essential roles of prematurity, microbial colonization, and enteral nutrition in the pathogenesis of necrotizing enterocolitis. Studies in neonatal pigs have demonstrated the intestinal trophic effects of akey gut hormone, glucagon-like peptide 2 (GLP-2), and its role in the intestinal adaptation process and efficacy in the treatment of short bowel syndrome. Further, pigs have been instrumental in elucidating the physiology of parenteral nutrition-associated liver disease and the means by which phytosterols, fibroblast growth factor 19, and a new generation of lipid emulsions may modify disease. The premature pig will continue to be a valuable model in the development of optimal infant diets (donor human milk, colostrum), specific milk bioactives (arginine, growth factors), gut microbiota modifiers (pre-, pro-, and antibiotics), pharmaceutical drugs (GLP-2 analogs, FXR agonists), and novel diagnostic tools (near-infrared spectroscopy) to prevent and treat these pediatric diseases.
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Affiliation(s)
- Douglas Burrin
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Baylor College of Medicine, Houston, Texas 77030, USA;
| | - Per Torp Sangild
- Comparative Pediatrics and Nutrition, University of Copenhagen, DK-1870 Frederiksberg C., Copenhagen, Denmark
| | - Barbara Stoll
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Baylor College of Medicine, Houston, Texas 77030, USA;
| | - Thomas Thymann
- Comparative Pediatrics and Nutrition, University of Copenhagen, DK-1870 Frederiksberg C., Copenhagen, Denmark
| | - Randal Buddington
- College of Nursing, University of Tennessee Health Science Center, Memphis, Tennessee 38163, USA
| | - Juan Marini
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Baylor College of Medicine, Houston, Texas 77030, USA; .,Department of Pediatrics, Section of Critical Care Medicine, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Oluyinka Olutoye
- Division of Pediatric Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, Texas 77030, USA
| | - Robert J Shulman
- USDA-ARS Children's Nutrition Research Center, Department of Pediatrics, Division of Gastroenterology, Hepatology, and Nutrition, Baylor College of Medicine, Houston, Texas 77030, USA;
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19
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Lucchinetti E, Lou PH, Wawrzyniak P, Wawrzyniak M, Scharl M, Holtzhauer GA, Krämer SD, Hersberger M, Rogler G, Zaugg M. Novel Strategies to Prevent Total Parenteral Nutrition-Induced Gut and Liver Inflammation, and Adverse Metabolic Outcomes. Mol Nutr Food Res 2020; 65:e1901270. [PMID: 32359213 DOI: 10.1002/mnfr.201901270] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 04/09/2020] [Indexed: 12/15/2022]
Abstract
Total parenteral nutrition (TPN) is a life-saving therapy administered to millions of patients. However, it is associated with significant adverse effects, namely liver injury, risk of infections, and metabolic derangements. In this review, the underlying causes of TPN-associated adverse effects, specifically gut atrophy, dysbiosis of the intestinal microbiome, leakage of the epithelial barrier with bacterial invasion, and inflammation are first described. The role of the bile acid receptors farnesoid X receptor and Takeda G protein-coupled receptor, of pleiotropic hormones, and growth factors is highlighted, and the mechanisms of insulin resistance, namely the lack of insulinotropic and insulinomimetic signaling of gut-originating incretins as well as the potentially toxicity of phytosterols and pro-inflammatory fatty acids mainly released from soybean oil-based lipid emulsions, are discussed. Finally, novel approaches in the design of next generation lipid delivery systems are proposed. Propositions include modifying the physicochemical properties of lipid emulsions, the use of lipid emulsions generated from sustainable oils with favorable ratios of anti-inflammatory n-3 to pro-inflammatory n-6 fatty acids, beneficial adjuncts to TPN, and concomitant pharmacotherapies to mitigate TPN-associated adverse effects.
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Affiliation(s)
- Eliana Lucchinetti
- Department of Anesthesiology and Pain Medicine and Cardiovascular Research Centre, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Phing-How Lou
- Department of Pharmacology, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Paulina Wawrzyniak
- Division of Clinical Chemistry and Biochemistry, Children's Hospital Zurich, Zurich, 8032, Switzerland
| | - Marcin Wawrzyniak
- Department of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, 8091, Switzerland
| | - Michael Scharl
- Department of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, 8091, Switzerland
| | - Gregory A Holtzhauer
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, 8093, Switzerland
| | - Stefanie D Krämer
- Institute of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Zurich, 8093, Switzerland
| | - Martin Hersberger
- Division of Clinical Chemistry and Biochemistry, Children's Hospital Zurich, Zurich, 8032, Switzerland
| | - Gerhard Rogler
- Department of Gastroenterology and Hepatology, University Hospital Zurich, Zurich, 8091, Switzerland
| | - Michael Zaugg
- Department of Anesthesiology and Pain Medicine and Cardiovascular Research Centre, University of Alberta, Edmonton, T6G 2R3, Canada.,Department of Pharmacology, University of Alberta, Edmonton, T6G 2R3, Canada
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20
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Zhang L, Wei X, Zhang R, Si D, Petitte JN, Ahmad B, Zhang M. A Novel Peptide Ameliorates LPS-Induced Intestinal Inflammation and Mucosal Barrier Damage via Its Antioxidant and Antiendotoxin Effects. Int J Mol Sci 2019; 20:E3974. [PMID: 31443263 PMCID: PMC6720008 DOI: 10.3390/ijms20163974] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 08/12/2019] [Accepted: 08/14/2019] [Indexed: 02/07/2023] Open
Abstract
Intestinal inflammation is an inflammatory disease resulting from immune dysregulation in the gut. It can increase the risk of enteric cancer, which is a common malignancy globally. As a new class of anti-inflammatory agents, native peptides have potential for use in the treatment of several intestinal inflammation conditions; however, their potential cytotoxicity and poor anti-inflammatory activity and stability have prevented their development. Hybridization has been proposed to overcome this problem. Thus, in this study, we designed a hybrid peptide (LL-37-TP5, LTP) by combing the active centre of LL-37 (13-36) with TP5. The half-life and cytotoxicity were tested in vitro, and the hybrid peptide showed a longer half-life and lower cytotoxicity than its parental peptides. We also detected the anti-inflammatory effects and mechanisms of LTP on Lipopolysaccharide (LPS)-induced intestinal inflammation in murine model. The results showed that LTP effectively prevented LPS-induced weight loss, impairment of intestinal tissues, leukocyte infiltration, and histological evidence of inflammation. Additionally, LTP decreased the levels of tumour necrosis factor-alpha, interferon-gamma, and interleukin-6; increased the expression of zonula occludens-1 and occludin; and reduced permeability in the jejunum of LPS-treated mice. Notably, LTP appeared to be more potent than the parental peptides LL-37 and TP5. The anti-inflammatory effects of LTP may be associated with the neutralization of LPS, inhibition of oxidative stress, and inhibition of the NF-κB signalling pathway. The findings of this study suggest that LTP might be an effective therapeutic agent for treating intestinal inflammation.
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Affiliation(s)
- Lulu Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Xubiao Wei
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Rijun Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
| | - Dayong Si
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - James N Petitte
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC 27695, USA
| | - Baseer Ahmad
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Manyi Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
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21
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Zhang L, Wei X, Zhang R, Petitte JN, Si D, Li Z, Cheng J, Du M. Design and Development of a Novel Peptide for Treating Intestinal Inflammation. Front Immunol 2019; 10:1841. [PMID: 31447849 PMCID: PMC6691347 DOI: 10.3389/fimmu.2019.01841] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Accepted: 07/22/2019] [Indexed: 12/24/2022] Open
Abstract
Intestinal inflammatory disorders, such as inflammatory bowel disease (IBD), are associated with increased pro-inflammatory cytokine secretion in the intestines. Furthermore, intestinal inflammation increases the risk of enteric cancer, which is a common malignancy globally. Native anti-inflammatory peptides are a class of anti-inflammatory agents that could be used in the treatment of several intestinal inflammation conditions. However, potential cytotoxicity, and poor anti-inflammatory activity have prevented their development as anti-inflammatory agents. Therefore, in this study, we designed and developed a novel hybrid peptide for the treatment of intestinal inflammation. Eight hybrid peptides were designed by combining the active centers of antimicrobial peptides, including LL-37 (13-36), YW12D, innate defense regulator 1, and cathelicidin 2 (1-13) with thymopentin or the active center of thymosin alpha 1 (Tα1) (17-24). The hybrid peptide, LL-37-Tα1 (LTA), had improved anti-inflammatory activity with minimal cytotoxicity. LTA was screened by molecule docking and in vitro experiments. Likewise, its anti-inflammatory effects and mechanisms were also evaluated using a lipopolysaccharide (LPS)-induced intestinal inflammation murine model. The results showed that LTA prevented LPS-induced impairment in the jejunum epithelium tissues and infiltration of leukocytes, which are both histological markers of inflammation. Additionally, LTA decreased the levels of tumor necrosis factor-alpha, interferon-gamma, interleukin-6, and interleukin-1β. LTA increased the expression of zonula occludens-1 and occludin, and reduced permeability and apoptosis in the jejunum of LPS-treated mice. Additionally, its anti-inflammatory effect is associated with neutralizing LPS, binding to the Toll-like receptor 4-myeloid differentiation factor 2 (TLR4/MD-2) complex, and modulating the nuclear factor-kappa B signal transduction pathway. The findings of this study suggest that LTA may be an effective therapeutic agent in the treatment of intestinal inflammation.
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Affiliation(s)
- Lulu Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Xubiao Wei
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Rijun Zhang
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jim N Petitte
- Prestage Department of Poultry Science, North Carolina State University, Raleigh, NC, United States
| | - Dayong Si
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Zhongxuan Li
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Junhao Cheng
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Mengsi Du
- Laboratory of Feed Biotechnology, State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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22
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Lin S, Stoll B, Robinson J, Pastor JJ, Marini JC, Ipharraguerre IR, Hartmann B, Holst JJ, Cruz S, Lau P, Olutoye O, Fang Z, Burrin DG. Differential action of TGR5 agonists on GLP-2 secretion and promotion of intestinal adaptation in a piglet short bowel model. Am J Physiol Gastrointest Liver Physiol 2019; 316:G641-G652. [PMID: 30920308 PMCID: PMC6580240 DOI: 10.1152/ajpgi.00360.2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 03/14/2019] [Accepted: 03/20/2019] [Indexed: 02/06/2023]
Abstract
Enteroendocrine L cells and glucagon-like peptide 2 (GLP-2) secretion are activated in the intestinal adaptation process following bowel resection in patients with short bowel syndrome. We hypothesized that enteral activation of Takeda G protein-coupled receptor 5 (TGR5), expressed in enteroendocrine L cells, could augment endogenous GLP-2 secretion and the intestinal adaptation response. Our aim was to assess the efficacy of different TGR5 agonists to stimulate GLP-2 secretion and intestinal adaptation in a piglet short-bowel model. In study 1, parenterally fed neonatal pigs (n = 6/group) were gavaged with vehicle, olive extract (OE; 10 or 50 mg/kg), or ursolic acid (UA; 10 mg/kg), and plasma GLP-2 was measured for 6 h. In study 2, neonatal pigs (n = 6-8/group) were subjected to transection or 80% mid-small intestine resection and, after 2 days, assigned to treatments for 10 days as follows: 1) transection + vehicle (sham), 2) resection + vehicle (SBS), 3) resection + 30 mg UA (SBS + UA), and 4) resection + 180 mg/kg OE (SBS + OE). We measured plasma GLP-2, intestinal histology, cell proliferation, and gene expression, as well as whole body citrulline-arginine kinetics and bile acid profiles. In study 1, GLP-2 secretion was increased by UA and tended to be increased by OE. In study 2, SBS alone, but not additional treatment with either TGR5 agonist, resulted in increased mucosal thickness and crypt cell proliferation in remnant jejunum and ileum sections. SBS increased biliary and ileal concentration of bile acids and expression of inflammatory and farnesoid X receptor target genes, but these measures were suppressed by UA treatment. In conclusion, UA is an effective oral GLP-2 secretagogue in parenterally fed pigs but is not capable of augmenting GLP-2 secretion or the intestinal adaptation response after massive small bowel resection. NEW & NOTEWORTHY Therapeutic activation of endogenous glucagon-like peptide 2 (GLP-2) secretion is a promising strategy to improve intestinal adaptation in patients with short bowel syndrome. This study in neonatal pigs showed that oral supplementation with a selective Takeda G protein-coupled receptor 5 (TGR5) agonist is an effective approach to increase GLP-2 secretion. The results warrant further study to establish a more potent oral TGR5 agonist that can effectively improve intestinal adaptation in pediatric patients with SBS.
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Affiliation(s)
- Sen Lin
- Institute of Animal Nutrition, Sichuan Agricultural University , Chengdu, Sichuan , People's Republic of China
| | - Barbara Stoll
- US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center , Houston, Texas
| | - Jason Robinson
- US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center , Houston, Texas
| | | | - Juan C Marini
- US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center , Houston, Texas
- Section of Critical Care Medicine, Department of Pediatrics, Baylor College of Medicine , Houston, Texas
| | - Ignacio R Ipharraguerre
- Lucta S.A., Montornès del Vallès, Spain
- Institute of Human Nutrition and Food Science, University of Kiel , Kiel , Germany
| | - Bolette Hartmann
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen , Copenhagen , Denmark
| | - Jens J Holst
- Department of Biomedical Sciences and Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen , Copenhagen , Denmark
| | - Stephanie Cruz
- Division of Pediatric Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Texas Children's Hospital , Houston, Texas
| | - Patricio Lau
- Division of Pediatric Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Texas Children's Hospital , Houston, Texas
| | - Oluyinka Olutoye
- Division of Pediatric Surgery, Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Texas Children's Hospital , Houston, Texas
| | - Zhengfeng Fang
- Institute of Animal Nutrition, Sichuan Agricultural University , Chengdu, Sichuan , People's Republic of China
| | - Douglas G Burrin
- US Department of Agriculture/Agricultural Research Service Children's Nutrition Research Center , Houston, Texas
- Section of Gastroenterology, Hepatology and Nutrition, Baylor College of Medicine, Houston, Texas
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23
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Abstract
Enteroendocrine cells (EECs) are sensory cells of the gastrointestinal tract. Most EECs reside in the mucosal lining of the stomach or intestine and sense food in the gut lumen. Food signals stimulate the release of hormones into the paracellular space where they either act locally or are taken up into the blood and circulate to distant organs. It recently was recognized that many EECs possess basal processes known as neuropods that not only contain hormones but also connect to nerves. This review describes how neuropods contribute to EEC function beyond typical hormonal actions. For example, gastrointestinal hormones not only act on distant organs, but, through neuropods, some act locally to stimulate other mucosal cells such as intestinal stem cells, enterocytes, or other EECs. With the recent discovery that EECs communicate directly with enteric nerves, EECs not only have the ability to sense food and bacteria in the gastrointestinal tract, but can communicate these signals directly to the nervous system.
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24
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Abstract
The intestinal epithelium is a multicellular interface in close proximity to a dense microbial milieu that is completely renewed every 3-5 days. Pluripotent stem cells reside at the crypt, giving rise to transient amplifying cells that go through continuous steps of proliferation, differentiation and finally anoikis (a form of programmed cell death) while migrating upwards to the villus tip. During these cellular transitions, intestinal epithelial cells (IECs) possess distinct metabolic identities reflected by changes in mitochondrial activity. Mitochondrial function emerges as a key player in cell fate decisions and in coordinating cellular metabolism, immunity, stress responses and apoptosis. Mediators of mitochondrial signalling include molecules such as ATP and reactive oxygen species and interrelate with pathways such as the mitochondrial unfolded protein response (MT-UPR) and AMP kinase signalling, in turn affecting cell cycle progression and stemness. Alterations in mitochondrial function and MT-UPR activation are integral aspects of pathologies, including IBD and cancer. Mitochondrial signalling and concomitant changes in metabolism contribute to intestinal homeostasis and regulate IEC dedifferentiation-differentiation programmes in the context of diseases, suggesting that mitochondrial function as a cellular checkpoint critically contributes to disease outcome. This Review highlights mitochondrial function and MT-UPR signalling in epithelial cell stemness, differentiation and lineage commitment and illustrates mitochondrial function in intestinal diseases.
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25
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Orhan A, Gögenur I, Kissow H. The Intestinotrophic Effects of Glucagon-Like Peptide-2 in Relation to Intestinal Neoplasia. J Clin Endocrinol Metab 2018; 103:2827-2837. [PMID: 29741675 DOI: 10.1210/jc.2018-00655] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2018] [Accepted: 05/01/2018] [Indexed: 02/07/2023]
Abstract
CONTEXT Glucagon-like peptide-2 (GLP-2) is a gastrointestinal hormone with intestinotrophic and antiapoptotic effects. The hormone's therapeutic potential in intestinal diseases and relation to intestinal neoplasia has raised great interest among researchers. This article reviews and discusses published experimental and clinical studies concerning the growth-stimulating and antiapoptotic effects of GLP-2 in relation to intestinal neoplasia. EVIDENCE ACQUISITION The data used in this narrative review were collected through literature research in PubMed using English keywords. All studies to date examining GLP-2's relation to intestinal neoplasms have been reviewed in this article, as the studies on the matter are sparse. EVIDENCE SYNTHESIS GLP-2 has been found to stimulate intestinal growth through secondary mediators and through the involvement of Akt phosphorylation. Studies on rodents have shown that exogenously administered GLP-2 increases the growth and incidence of adenomas in the colon, suggesting that GLP-2 may play an important role in the progression of intestinal tumors. Clinical studies have found that exogenous GLP-2 treatment is well tolerated for up to 30 months, but the tolerability for even longer periods of treatment has not been examined. CONCLUSION Exogenous GLP-2 is currently available as teduglutide for the treatment of short bowel syndrome. However, the association between exogenous GLP-2 treatment and intestinal neoplasia in humans has not been fully identified. This leads to a cause for concern regarding the later risk of the development or progression of intestinal tumors with long-term GLP-2 treatment. Therefore, further research regarding GLP-2's potential relation to intestinal cancers is needed.
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Affiliation(s)
- Adile Orhan
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
| | - Ismail Gögenur
- Center for Surgical Science, Department of Surgery, Zealand University Hospital, Koege, Denmark
| | - Hannelouise Kissow
- Department of Biomedical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
- NNF Center of Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen N, Denmark
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26
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Gu J, Liu J, Huang T, Zhang W, Jia B, Mu N, Zhang K, Hao Q, Li W, Liu W, Zhang W, Zhang Y, Xue X, Zhang C, Li M. The protective and anti-inflammatory effects of a modified glucagon-like peptide-2 dimer in inflammatory bowel disease. Biochem Pharmacol 2018; 155:425-433. [PMID: 30040929 DOI: 10.1016/j.bcp.2018.07.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 07/20/2018] [Indexed: 12/26/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic, recurrent, and remitting inflammatory disease resulting from immune dysregulation in the gut. As a clinically frequent disease, it can affect individuals throughout their lives, with multiple complications. Glucagon-like peptide 2 (GLP-2) is a potent epithelium-specific intestinal growth factor. However, native GLP-2 has a relatively short half-life in human circulation because of extensive renal clearance and rapid degradation by the proteolytic enzyme dipeptidyl peptidase-IV (DPP-IV). Previously, We prepared a recombinant GLP-2 variant (GLP-2②), which has increased half-life and activity as compared to the [Gly2]GLP-2 monomer. The aim of the present study was to investigate the protective potential of GLP-2② in IBD models. LPS-induced in vitro model and dextran sulfate sodium (DSS)-induced in vivo model were used to study the anti-inflammatory and therapeutic effect of GLP-2②. We found that treated with GLP-2② showed a significantly reduction in the secretion of inflammatory cytokines. Furthermore, GLP-2② alleviated symptoms of DSS-induced colitis. GLP-2② treated mice displayed an increase in body weight, lower colitis scores, and fewer mucosal damage compared with GLP-2 treated mice. MPO activities, protein expression of NLRP3 and COX2 in the colon tissues were significantly reduced in GLP-2② groups. Importantly, the ameliorative effect of GLP-2② was related to anti-apoptosis effect in colon tissues. These findings demonstrated that GLP-2② may offer a superior therapeutic benefit over [Gly2]GLP-2 monomer for treatment of IBD.
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Affiliation(s)
- Jintao Gu
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Jun Liu
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Tonglie Huang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Wangqian Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Bo Jia
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Nan Mu
- Department of Pathophysiology, School of Basic Medicine, Fourth Military Medical University, Xi'an 710032, China
| | - Kuo Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Qiang Hao
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Weina Li
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Liu
- Department of Neurosurgery, Xijing Hospital, Fourth Military Medical University, Xi'an 710032, China
| | - Wei Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Yingqi Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Xiaochang Xue
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
| | - Cun Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
| | - Meng Li
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
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Brubaker PL. Glucagon‐like Peptide‐2 and the Regulation of Intestinal Growth and Function. Compr Physiol 2018; 8:1185-1210. [DOI: 10.1002/cphy.c170055] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Villalona G, Price A, Blomenkamp K, Manithody C, Saxena S, Ratchford T, Westrich M, Kakarla V, Pochampally S, Phillips W, Heafner N, Korremla N, Greenspon J, Guzman MA, Kumar Jain A. No Gut No Gain! Enteral Bile Acid Treatment Preserves Gut Growth but Not Parenteral Nutrition-Associated Liver Injury in a Novel Extensive Short Bowel Animal Model. JPEN J Parenter Enteral Nutr 2018; 42:1238-1251. [PMID: 29701901 DOI: 10.1002/jpen.1167] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Accepted: 02/27/2018] [Indexed: 12/16/2022]
Abstract
BACKGROUND Parenteral nutrition (PN) provides nutrition intravenously; however, this life-saving therapy is associated with significant liver disease. Recent evidence indicates improvement in PN-associated injury in animals with intact gut treated with enteral bile acid (BA), chenodeoxycholic acid (CDCA), and a gut farnesoid X receptor (FXR) agonist, which drives the gut-liver cross talk (GLCT). We hypothesized that similar improvement could be translated in animals with short bowel syndrome (SBS). METHODS Using piglets, we developed a novel 90% gut-resected SBS model. Fifteen SBS piglets receiving PN were given CDCA or control (vehicle control) for 2 weeks. Tissue and serum were analyzed posteuthanasia. RESULTS CDCA increased gut FXR (quantitative polymerase chain reaction; P = .008), but not downstream FXR targets. No difference in gut fibroblast growth factor 19 (FGF19; P = .28) or hepatic FXR (P = .75), FGF19 (P = .86), FGFR4 (P = .53), or Cholesterol 7 α-hydroxylase (P = .61) was noted. PN resulted in cholestasis; however, no improvement was noted with CDCA. Hepatic fibrosis or immunostaining for Ki67, CD3, or Cytokeratin 7 was not different with CDCA. PN resulted in gut atrophy. CDCA preserved (P = .04 vs control) gut mass and villous/crypt ratio. The median (interquartile range) for gut mass for control was 0.28 (0.17-0.34) and for CDCA was 0.33 (0.26-0.46). CONCLUSIONS We note that, unlike in animals with intact gut, in an SBS animal model there is inadequate CDCA-induced activation of gut-derived signaling to cause liver improvement. Thus, it appears that activation of GLCT is critically dependent on the presence of adequate gut. This is clinically relevant because it suggests that BA therapy may not be as effective for patients with SBS.
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Affiliation(s)
- Gustavo Villalona
- Department of Surgery, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Amber Price
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Keith Blomenkamp
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | | | - Saurabh Saxena
- Department of Surgery, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Thomas Ratchford
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Matthew Westrich
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Vindhya Kakarla
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Shruthika Pochampally
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - William Phillips
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Nicole Heafner
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Niraja Korremla
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Jose Greenspon
- Department of Surgery, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Miguel A Guzman
- Department of Pathology, Saint Louis University School of Medicine, St. Louis, Missouri, USA
| | - Ajay Kumar Jain
- Department of Pediatrics, Saint Louis University School of Medicine, St. Louis, Missouri, USA
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Sun J, Li Y, Nguyen DN, Mortensen MS, van den Akker CHP, Skeath T, Pors SE, Pankratova S, Rudloff S, Sørensen SJ, Burrin DG, Thymann T, Sangild PT. Nutrient Fortification of Human Donor Milk Affects Intestinal Function and Protein Metabolism in Preterm Pigs. J Nutr 2018; 148:336-347. [PMID: 29462356 DOI: 10.1093/jn/nxx033] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2017] [Accepted: 10/31/2017] [Indexed: 02/02/2023] Open
Abstract
Background Nutrient fortification of human milk is often required to secure adequate growth and organ development for very preterm infants. There is concern that formula-based fortifiers (FFs) induce intestinal dysfunction, feeding intolerance, and necrotizing enterocolitis (NEC). Bovine colostrum (BC) may be an alternative nutrient fortifier, considering its high content of protein and milk bioactive factors. Objective We investigated whether BC was superior to an FF product based on processed bovine milk and vegetable oil to fortify donor human milk (DHM) for preterm pigs, used as a model for infants. Methods Sixty preterm pigs from 4 sows (Danish Landrace × Large White × Duroc, birth weight 944 ± 29 g) received decreasing volumes of parenteral nutrition (96-72 mL ⋅ kg-1 ⋅ d-1) and increasing volumes of enteral nutrition (24-132 mL ⋅ kg-1 ⋅ d-1) for 8 d. Pigs were fed donor porcine milk (DPM) and DHM with or without FF or BC fortification (+4.6 g protein ⋅ kg-1 ⋅ d-1). Results DPM-fed pigs showed higher growth (10-fold), protein synthesis (+15-30%), villus heights, lactase and peptidase activities (+30%), and reduced intestinal cytokines (-50%) relative to DHM pigs (all P < 0.05). Fortification increased protein synthesis (+20-30%), but with higher weight gain and lower urea and cortisol concentrations for DHM+BC compared with DHM+FF pigs (2- to 3-fold differences, all P ≤ 0.06). DHM+FF pigs showed more diarrhea and reduced lactase and peptidase activities, hexose uptake, and villus heights relative to DHM+BC or DHM pigs (30-90% differences, P < 0.05). Fortification did not affect NEC incidence but DHM+BC pigs had lower colonic interleukin (IL)-6 and IL-8 concentrations relative to the remaining pigs (-30%, P = 0.06). DHM+FF pigs had higher stomach bacterial load than did DHM, and higher bacterial density along intestinal villi than did DHM and DHM+BC pigs (2- to 3-fold, P < 0.05). Conclusions The FF product investigated in this study reduced growth, intestinal function, and protein utilization in DHM-fed preterm pigs, relative to BC as fortifier. The relevance of BC as an alternative nutrient fortifier for preterm infants should be tested.
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Affiliation(s)
- Jing Sun
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences
| | - Yanqi Li
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences
| | - Duc Ninh Nguyen
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences
| | | | | | - Tom Skeath
- Newcastle Neonatal Service, Royal Victoria Infirmary, Newcastle upon Tyne, United Kingdom
| | - Susanne E Pors
- Department of Veterinary and Animal Sciences; and Laboratory of Neural Plasticity, Center for Neuroscience, University of Copenhagen, Copenhagen, Denmark
| | - Stanislava Pankratova
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences.,Department of Laboratory of Neural Plasticity, Center for Neuroscience, University of Copenhagen, Copenhagen, Denmark.,Department of Pediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark
| | - Silvia Rudloff
- Institute of Nutritional Science, Justus-Liebig-University Giessen, Giessen, Germany
| | | | - Douglas G Burrin
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX
| | - Thomas Thymann
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences
| | - Per T Sangild
- Section of Comparative Pediatrics and Nutrition, Faculty of Health and Medical Sciences.,Department of Pediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark
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Zhang Q, Liu M, Li S, Xu Z, Wang J, Wang Y, Fei Z, Huang W, Sun H. Oral Bifidobacterium longum expressing GLP-2 improves nutrient assimilation and nutritional homeostasis in mice. J Microbiol Methods 2018; 145:87-92. [PMID: 29329748 DOI: 10.1016/j.mimet.2018.01.002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 01/08/2018] [Accepted: 01/09/2018] [Indexed: 01/24/2023]
Abstract
Bifidobacterium has been developed for the oral delivery of peptides and has the added beneficial effect on our bodies through its probiotic properties. Here, we utilize Bifidobacterium as a delivery system to orally deliver Glucagon like peptide-2 (GLP-2). We constructed vector derived from pET-31b(+) to construct a Bifidobacterium longum expressing GLP-2. We then determined the bioactivity of recombinant Bifidobacterium in Caco-2 cells. Finally, we quantified newly synthesized ApoB48 and chylomicron production in mice infused with exogenous GLP-2 or Bifidobacterium expressing GLP-2. Results based on secretion of the triglyceride (TG)-rich lipoprotein (TRL)-ApoB48 and secretion of chylomicron revealed that recombinant Bifidobacterium was efficient in treating intestinal dysfunction,suggesting an alternative way to use Bifidobacterium as a delivery system to deliver GLP-2 for gastrointestinal nutrition coordination.
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Affiliation(s)
- Qian Zhang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Mengge Liu
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Shiyu Li
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhenrui Xu
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Jiajia Wang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Yuzhe Wang
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Zhengbin Fei
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China
| | - Wenhua Huang
- Department of Anatomy, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Hanxiao Sun
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou, 510632, China.
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Gu J, Liu S, Mu N, Huang T, Zhang W, Zhao H, Shu Z, Zhang C, Hao Q, Li W, Xue X, Zhang W, Zhang Y. A DPP-IV-resistant glucagon-like peptide-2 dimer with enhanced activity against radiation-induced intestinal injury. J Control Release 2017; 260:32-45. [PMID: 28522195 DOI: 10.1016/j.jconrel.2017.05.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 04/19/2017] [Accepted: 05/14/2017] [Indexed: 02/07/2023]
Abstract
Although radiotherapy is a highly effective treatment for abdominal or pelvic cancer patients, it can increase the incidence of severe gastrointestinal (GI) toxicity. As an intestinal growth factor, glucagon-like peptide 2 (GLP-2) has been shown to improve the preclinical models of both short bowel syndrome and inflammatory bowel disease by stimulating intestinal growth. Teduglutide ([Gly2]GLP-2), a recombinant human GLP-2 variant, has a prolonged half-life and stability as compared to the native GLP-2 peptide, but still requires daily application in the clinic. Here, we designed and prepared a new degradation-resistant GLP-2 analogue dimer, designated GLP-2②, with biotechnological techniques. The purity of GLP-2②reached 97% after ammonium sulphate precipitation and anion exchange chromatography purification, and the purification process was simple and cost-effective. We next confirmed that the GLP-2② exhibited enhanced activities compared with [Gly2]GLP-2, the long-acting, degradation-resistant analogue. Notably, GLP-2② offers a pharmacokinetic and therapeutic advantage in the treatment of radiation-induced intestinal injury over [Gly2]GLP-2. We further demonstrated that GLP-2② rapidly activates divergent intracellular signaling pathways involved in cell survival and apoptosis. Taken together, our data revealed a potential novel and safe peptide drug for limiting the adverse effect of radiotherapy on the gastrointestinal system.
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Affiliation(s)
- Jintao Gu
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Shuo Liu
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Nan Mu
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Tonglie Huang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Wangqian Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Huadong Zhao
- Department of General Surgery, Tangdu Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhen Shu
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Cun Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Qiang Hao
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Weina Li
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China
| | - Xiaochang Xue
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
| | - Wei Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
| | - Yingqi Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Fourth Military Medical University, Xi'an 710032, China.
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Jaworski NW, Owusu-Asiedu A, Walsh MC, McCann JC, Loor JJ, Stein HH. Effects of a 3 strain -based direct-fed microbial and dietary fiber concentration on growth performance and expression of genes related to absorption and metabolism of volatile fatty acids in weanling pigs. J Anim Sci 2017; 95:308-319. [PMID: 28177388 DOI: 10.2527/jas.2016.0557] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Effects of a -based direct-fed microbial (DFM) on growth performance, plasma tumor necrosis factor ɑ (TNFɑ), relative gene expression, and intestinal VFA concentrations in weanling pigs fed low- or high-fiber diets were evaluated. Two hundred pigs (initial BW: 6.31 ± 0.73 kg) were allotted to 1 of 4 dietary treatments (5 pigs per pen and 10 pens per treatment). Treatments were arranged in a 2 × 2 factorial design with 2 diet types [low-fiber (LF) or high-fiber (HF)] and 2 concentrations of DFM (0 or 60 g DFM/t of feed). The DFM contained 1.5 × 10 cfu/g and was obtained from Danisco Animal Nutrition-DuPont Industrial Biosciences, Marlborough, UK. Phase 1 diets were fed for 2 wk post-weaning and phase 2 diets were fed over the following 29 d. Low fiber diets contained corn and soybean meal as main ingredients and HF diets contained corn, soybean meal, corn distillers dried grains with solubles (7.5 and 15.0% in phase 1 and 2, respectively), and wheat middlings (10.0%). Pigs and feed were weighed at the start and at the end of each phase, and ADG, ADFI, and G:F were calculated. At the conclusion of phase 2, blood was collected from 1 pig per pen and 1 pig per pen was sacrificed. Cecum and rectum contents were analyzed for VFA, and tissue samples were collected from the ileum, cecum, rectum, and liver to determine expression of genes related to absorption and metabolism of VFA using quantitative reverse transcription-PCR. Results indicated that feeding HF diets reduced ( ≤ 0.05) ADFI and ADG of pigs compared with feeding LF diets. Pigs fed DFM diets had improved ( ≤ 0.05) G:F compared with pigs fed non-DFM diets. Pigs fed LF diets had greater ( ≤ 0.05) BW at the end of phase 2 compared with pigs fed HF diets. The concentration of VFA in rectum contents was greater ( ≤ 0.05) in pigs fed LF diets than in pigs fed HF diets. The expression of in the rectum of pigs fed HF diets was greater ( ≤ 0.05) than for pigs fed LF diets, and pigs fed DFM-containing diets had an increased ( ≤ 0.05) expression of in the liver. Pigs fed HF diets had greater ( ≤ 0.05) concentrations of urea N in plasma compared with pigs fed LF diets, but dietary fiber and DFM had no effect on plasma concentration of TNF-ɑ. In conclusion, the -based DFM improved overall G:F of weanling pigs, but pigs fed LF diets had greater final BW than pigs fed HF diets.
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Connor E, Wall E, Bravo D, Evock-Clover C, Elsasser T, Baldwin R, Santín M, Vinyard B, Kahl S, Walker M. Reducing gut effects from Cryptosporidium parvum infection in dairy calves through prophylactic glucagon-like peptide 2 therapy or feeding of an artificial sweetener. J Dairy Sci 2017; 100:3004-3018. [DOI: 10.3168/jds.2016-11861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Accepted: 12/08/2016] [Indexed: 11/19/2022]
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Qi KK, Lv JJ, Wu J, Xu ZW. Therapeutic effects of different doses of polyethylene glycosylated porcine glucagon-like peptide-2 on ulcerative colitis in male rats. BMC Gastroenterol 2017; 17:34. [PMID: 28259136 PMCID: PMC5336612 DOI: 10.1186/s12876-017-0593-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 03/01/2017] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Polyethylene glycosylated (PEGylated) porcine glucagon-like peptide-2 (pGLP-2) considerably increases half-life and stability compared with the native pGLP-2, but the effective dose for intestinal damage is still unclear. This study aims to evaluate the available dose of polyethylene glycosylated porcine glucagon-like peptide-2 (PEG-pGLP-2), a modified, long-acting form of pGLP-2 in an experimental rat model of ulcerative colitis. METHODS Thirty-five male rats were randomly assigned into five groups: control, dextran sodium sulphate (DSS), DSS + PEG-pGLP-2(L), DSS + PEG-pGLP-2(M) and DSS + PEG-pGLP-2(H). Rats in control group received only water; other rats were fed with 5% (w/v) DSS and intraperitoneally administered with 12.5, 25 and 100 nmol/kg PEG-pGLP-2 daily for 6 days. RESULTS Compared with the control treatment, DSS treatment significantly (p < 0.05) decreased body weight change, colonic length, duodenal villus height and expression of zonula occludens-1, whereas significantly (p < 0.05) increased colonic damage score and expression of claudin-1, interleukin (IL)-1, IL-7, IL-10, interferon-γ and tumour necrosis factor (TNF)-α in colon. However, the three doses of PEG-pGLP-2 all reduced these effects; these treatments significantly (p < 0.05) increased body weight change and duodenal villus height, whereas significantly (p < 0.05) decreased colonic damage score and expression of IL-1, IL-7 and TNF-α in colon. Specifically, low-dose (12.5 nmol/kg/d) PEG-pGLP-2 was effective. CONCLUSIONS These results indicated that PEG-pGLP-2 is a novel and potentially effective therapy for intestinal healing in a relatively low dose.
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Affiliation(s)
- Ke-Ke Qi
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences, 198 Shiqiao Road, Jianggan, Hangzhou, 310021, China
| | - Jia-Jia Lv
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences, 198 Shiqiao Road, Jianggan, Hangzhou, 310021, China
| | - Jie Wu
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences, 198 Shiqiao Road, Jianggan, Hangzhou, 310021, China
| | - Zi-Wei Xu
- Institute of Animal Science, Zhejiang Academy of Agricultural Sciences, 198 Shiqiao Road, Jianggan, Hangzhou, 310021, China.
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Interdependency of EGF and GLP-2 Signaling in Attenuating Mucosal Atrophy in a Mouse Model of Parenteral Nutrition. Cell Mol Gastroenterol Hepatol 2017; 3:447-468. [PMID: 28462383 PMCID: PMC5403977 DOI: 10.1016/j.jcmgh.2016.12.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Accepted: 12/31/2016] [Indexed: 12/27/2022]
Abstract
BACKGROUND & AIMS Total parenteral nutrition (TPN), a crucial treatment for patients who cannot receive enteral nutrition, is associated with mucosal atrophy, barrier dysfunction, and infectious complications. Glucagon-like peptide-2 (GLP-2) and epidermal growth factor (EGF) improve intestinal epithelial cell (IEC) responses and attenuate mucosal atrophy in several TPN models. However, it remains unclear whether these 2 factors use distinct or overlapping signaling pathways to improve IEC responses. We investigated the interaction of GLP-2 and EGF signaling in a mouse TPN model and in patients deprived of enteral nutrition. METHODS Adult C57BL/6J, IEC-Egfrknock out (KO) and IEC-pik3r1KO mice receiving TPN or enteral nutrition were treated with EGF or GLP-2 alone or in combination with reciprocal receptor inhibitors, GLP-2(3-33) or gefitinib. Jejunum was collected and mucosal atrophy and IEC responses were assessed by histologic, gene, and protein expression analyses. In patients undergoing planned looped ileostomies, fed and unfed ileum was analyzed. RESULTS Enteral nutrient deprivation reduced endogenous EGF and GLP-2 signaling in mice and human beings. In the mouse TPN model, exogenous EGF or GLP-2 attenuated mucosal atrophy and restored IEC proliferation. The beneficial effects of EGF and GLP-2 were decreased upon Gefitinib treatment and in TPN-treated IEC-EgfrKO mice, showing epidermal growth factor-receptor dependency for these IEC responses. By contrast, in TPN-treated IEC-pi3kr1KO mice, the beneficial actions of EGF were lost, although GLP-2 still attenuated mucosal atrophy. CONCLUSIONS Upon enteral nutrient deprivation, exogenous GLP-2 and EGF show strong interdependency for improving IEC responses. Understanding the differential requirements for phosphatidylinositol 3-kinase/phosphoAKT (Ser473) signaling may help improve future therapies to prevent mucosal atrophy.
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Key Words
- EGF
- EGF, epidermal growth factor
- EGFR
- EGFR, epidermal growth factor receptor
- GLP-2
- GLP-2 (3-33), glucagon-like peptide 2 antagonist
- GLP-2, glucagon-like peptide 2
- GLP2R, glucagon-like peptide 2 receptor
- IEC, intestinal epithelial cell
- IGF-1, insulin-like growth factor 1
- ISC, intestinal stem cell
- IV, intravenous
- KO, knock out
- Lgr5, leucine-rich repeat-containing G-protein–coupled receptor 5
- Mucosal Atrophy
- PCNA, proliferating cell nuclear antigen
- PCR, polymerase chain reaction
- PI3K
- PI3K, phosphatidylinositol 3-kinase
- PI3KR1, phosphatidylinositol 3-kinase p85a
- SBS, short-bowel syndrome
- TNF, tumor necrosis factor
- TPN, total parenteral nutrition
- TUNEL, terminal deoxynucleotidyl transferase–mediated deoxyuridine triphosphate nick-end labeling
- Total Parenteral Nutrition
- WT, wild-type
- bp, base pair
- mRNA, messenger RNA
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Is OM-3 synergistic with GLP-2 in intestinal failure? J Surg Res 2017; 207:7-12. [DOI: 10.1016/j.jss.2016.08.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2016] [Revised: 07/12/2016] [Accepted: 08/03/2016] [Indexed: 12/12/2022]
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Naberhuis JK, Tappenden KA. Teduglutide for Safe Reduction of Parenteral Nutrient and/or Fluid Requirements in Adults. JPEN J Parenter Enteral Nutr 2016; 40:1096-1105. [DOI: 10.1177/0148607115582063] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Accepted: 03/23/2015] [Indexed: 01/15/2023]
Affiliation(s)
| | - Kelly A. Tappenden
- Division of Nutritional Sciences
- Department of Food Science and Human Nutrition, University of Illinois, Urbana, Illinois
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Connor EE, Evock-Clover CM, Wall EH, Baldwin RL, Santin-Duran M, Elsasser TH, Bravo DM. Glucagon-like peptide 2 and its beneficial effects on gut function and health in production animals. Domest Anim Endocrinol 2016; 56 Suppl:S56-65. [PMID: 27345324 DOI: 10.1016/j.domaniend.2015.11.008] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 11/17/2015] [Accepted: 11/26/2015] [Indexed: 12/12/2022]
Abstract
Numerous endocrine cell subtypes exist within the intestinal mucosa and produce peptides contributing to the regulation of critical physiological processes including appetite, energy metabolism, gut function, and gut health. The mechanisms of action and the extent of the physiological effects of these enteric peptides are only beginning to be uncovered. One peptide in particular, glucagon-like peptide 2 (GLP-2) produced by enteroendocrine L cells, has been fairly well characterized in rodent and swine models in terms of its ability to improve nutrient absorption and healing of the gut after injury. In fact, a long-acting form of GLP-2 recently has been approved for the management and treatment of human conditions like inflammatory bowel disease and short bowel syndrome. However, novel functions of GLP-2 within the gut continue to be demonstrated, including its beneficial effects on intestinal barrier function and reducing intestinal inflammation. As knowledge continues to grow about GLP-2's effects on the gut and its mechanisms of release, the potential to use GLP-2 to improve gut function and health of food animals becomes increasingly more apparent. Thus, the purpose of this review is to summarize: (1) the current understanding of GLP-2's functions and mechanisms of action within the gut; (2) novel applications of GLP-2 (or stimulators of its release) to improve general health and production performance of food animals; and (3) recent findings, using dairy calves as a model, that suggest the therapeutic potential of GLP-2 to reduce the pathogenesis of intestinal protozoan infections.
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Affiliation(s)
- E E Connor
- US Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD 20705 USA.
| | - C M Evock-Clover
- US Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD 20705 USA
| | - E H Wall
- Pancosma S.A., CH-1218 Geneva, Switzerland
| | - R L Baldwin
- US Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD 20705 USA
| | - M Santin-Duran
- US Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD 20705 USA
| | - T H Elsasser
- US Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD 20705 USA
| | - D M Bravo
- Pancosma S.A., CH-1218 Geneva, Switzerland
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Deng QH, Jia G, Zhao H, Chen ZL, Chen XL, Liu GM, Wang KN. The prolonged effect of glucagon-like peptide 2 pretreatment on growth performance and intestinal development of weaned piglets. J Anim Sci Biotechnol 2016; 7:28. [PMID: 27148449 PMCID: PMC4855712 DOI: 10.1186/s40104-016-0087-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2015] [Accepted: 04/19/2016] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Glucagon-like peptide 2 (GLP-2) is a potent epithelium-specific intestinal growth factor. The aim of this study was to demonstrate the prolonged effect of GLP-2 on the growth performance of weaned piglets. Forty piglets weaned at the age of 28 d with an average BW of 6.8 ± 0.4 kg were assigned to four treatments: (i) non-challenged control; (ii) LPS-challenged control; (iii) LPS + low GLP-2; and (iv) LPS + high GLP-2. Piglets in groups (i), (ii), and (iv) were s.c. injected with PBS supplemented with human [Gly2]GLP-21-34 at doses of 0, 2 and 10 nmol/kg BW per day for seven consecutive days. BW, gain:feed ratio (G:F), and plasma GLP-2 levels were determined on d 0, 7, and 14 after weaning. Piglets were challenged with i.p. administration of Escherichia coli lipopolysaccharide (LPS) at a dose of 100 μg/kg on d 14 to induce intestinal damage. Twenty-four hours later, intestinal tract samples were collected to assess intestinal morphology and quantify enzyme activity. RESULTS Plasma GLP-2 levels decreased after weaning, but in the high GLP-2 group, plasma GLP-2 was maintained on d 7 and even increased to a level higher than the preweaning level on d 14 (P < 0.05). High GLP-2 treatment significantly increased the duodenal, jejunal and ileal weight, as well as the gross weight of the small intestine (SI), and the SI weight index (P < 0.05). LPS caused villous atrophy and disrupted intestinal morphology in the duodenum, jejunum and ileum. GLP-2 also significantly increased the villus height and the villus height/crypt depth ratio (VCR) of the duodenum, jejunum, and ileum (P < 0.05). Histological examination revealed that in GLP-2-treated groups, the integrity of the villus was maintained, and the villus was protected against LPS-induced damage. GLP-2 significantly increased the activity of alkaline phosphatase (AKP), γ-glutamyltranspeptidase (γ-GT), and pancreatic lipase in the duodenum and jejunum (P < 0.05). GLP-2 treatment also significantly increased the average daily gain (ADG) and G:F of piglets at 0 to 7, 7 to 14, as well as 0 to14 d (P < 0.05), resulting in a significant increase of final BW in high GLP-2 pigs (P = 0.016). CONCLUSIONS Exogenous GLP-2 improved the growth of weaned piglets and protected them against LPS-induced intestinal damage. These effects may be due to the ability of GLP-2 to promote the secretion of endogenous GLP-2 to stimulate the small intestinal development.
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Affiliation(s)
- Qiu Hong Deng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
| | - Gang Jia
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
| | - Hua Zhao
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
| | - Zheng Li Chen
- College of Animal Medicine, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
| | - Xiao Ling Chen
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
| | - Guang Mang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
| | - Kang Ning Wang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu, Sichuan 611130 China
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Nutrient-intake-level-dependent regulation of intestinal development in newborn intrauterine growth-restricted piglets via glucagon-like peptide-2. Animal 2016; 10:1645-54. [PMID: 27095347 DOI: 10.1017/s1751731116000690] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The objective of the present study was to investigate the intestinal development of newborn intrauterine growth-restricted (IUGR) piglets subjected to normal nutrient intake (NNI) or restricted nutrient intake (RNI). Newborn normal birth weight (NBW) and IUGR piglets were allotted to NNI or RNI levels for 4 weeks from day 8 postnatal. IUGR piglets receiving NNI had similar growth performance compared with that of NBW piglets. Small intestine length and villous height were greater in IUGR piglets fed the NNI than that of piglets fed the RNI. Lactase activity was increased in piglets fed the NNI compared with piglets fed the RNI. Absorptive function, represented by active glucose transport by the Ussing chamber method and messenger RNA (mRNA) expressions of two main intestinal glucose transporters, Na+-dependent glucose transporter 1 (SGLT1) and glucose transporter 2 (GLUT2), were greater in IUGR piglets fed the NNI compared with piglets fed the RNI regimen. The apoptotic process, characterized by caspase-3 activity (a sign of activated apoptotic cells) and mRNA expressions of p53 (pro-apoptotic), bcl-2-like protein 4 (Bax) (pro-apoptotic) and B-cell lymphoma-2 (Bcl-2) (anti-apoptotic), were improved in IUGR piglets fed the NNI regimen. To test the hypothesis that improvements in intestinal development of IUGR piglets fed NNI might be mediated through circulating glucagon-like peptide-2 (GLP-2), GLP-2 was injected subcutaneously to IUGR piglets fed the RNI from day 8 to day 15 postnatal. Although the intestinal development of IUGR piglets fed the RNI regimen was suppressed compared with those fed the NNI regimen, an exogenous injection of GLP-2 was able to bring intestinal development to similar levels as NNI-fed IUGR piglets. Collectively, our results demonstrate that IUGR neonates that have NNI levels could improve intestinal function via the regulation of GLP-2.
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Busby ER, Mommsen TP. Proglucagons in vertebrates: Expression and processing of multiple genes in a bony fish. Comp Biochem Physiol B Biochem Mol Biol 2016; 199:58-66. [PMID: 26927880 DOI: 10.1016/j.cbpb.2016.02.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Revised: 02/17/2016] [Accepted: 02/17/2016] [Indexed: 11/16/2022]
Abstract
In contrast to mammals, where a single proglucagon (PG) gene encodes three peptides: glucagon, glucagon-like peptide 1 and glucagon-like peptide 2 (GLP-1; GLP-2), many non-mammalian vertebrates carry multiple PG genes. Here, we investigate proglucagon mRNA sequences, their tissue expression and processing in a diploid bony fish. Copper rockfish (Sebastes caurinus) express two independent genes coding for distinct proglucagon sequences (PG I, PG II), with PG II lacking the GLP-2 sequence. These genes are differentially transcribed in the endocrine pancreas, the brain, and the gastrointestinal tract. Alternative splicing identified in rockfish is only one part of this complex regulation of the PG transcripts: the system has the potential to produce two glucagons, four GLP-1s and a single GLP-2, or any combination of these peptides. Mass spectrometric analysis of partially purified PG-derived peptides in endocrine pancreas confirms translation of both PG transcripts and differential processing of the resulting peptides. The complex differential regulation of the two PG genes and their continued presence in this extant teleostean fish strongly suggests unique and, as yet largely unidentified, roles for the peptide products encoded in each gene.
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Affiliation(s)
- Ellen R Busby
- Department of Biochemistry and Microbiology, and Department of Biology, University of Victoria, Victoria, BC, Canada.
| | - Thomas P Mommsen
- Department of Biochemistry and Microbiology, and Department of Biology, University of Victoria, Victoria, BC, Canada
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Connor EE, Evock-Clover CM, Walker MP, Elsasser TH, Kahl S. COMPARATIVE GUT PHYSIOLOGY SYMPOSIUM: Comparative physiology of glucagon-like peptide-2: Implications and applications for production and health of ruminants. J Anim Sci 2016; 93:492-501. [PMID: 26020740 DOI: 10.2527/jas.2014-8577] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Glucagon-like peptide-2 (GLP-2) is a 33-amino acid peptide derived from proteolytic cleavage of proglucagon by prohormone convertase 1/3 in enteroendocrine L cells. Studies conducted in humans, in rodent models, and in vitro indicate that GLP-2 is secreted in response to the presence of molecules in the intestinal lumen, including fatty acids, carbohydrates, amino acids, and bile acids, which are detected by luminal chemosensors. The physiological actions of GLP-2 are mediated by its G protein-coupled receptor expressed primarily in the intestinal tract on enteric neurons, enteroendocrine cells, and myofibroblasts. The biological activity of GLP-2 is further regulated by dipeptidyl peptidase IV, which rapidly cleaves the N-terminus of GLP-2 that is responsible for GLP-2 receptor activation. Within the gut, GLP-2 increases nutrient absorption, crypt cell proliferation, and mesenteric blood flow and decreases gut permeability and motility, epithelial cell apoptosis, and inflammation. Outside the gut, GLP-2 reduces bone resorption, can suppress appetite, and is cytoprotective in the lung. Thus, GLP-2 has been studied intensively as a therapeutic to improve intestinal function of humans during parenteral nutrition and following small bowel resection and, more recently, as a treatment for osteoporosis and obesity-related disorders and to reduce cellular damage associated with inflammation of the gut and lungs. Recent studies demonstrate that many biological actions and properties of GLP-2 in ruminants are similar to those in nonruminants, including the potential to reduce intestinal nitro-oxidative stress in calves caused by parasitic diseases such as coccidiosis. Because of its beneficial impacts on nutrient absorption, gut healing, and normal gut development, GLP-2 therapy offers significant opportunities to improve calf health and production efficiency. However, GLP-2 therapies require an extended time course to achieve desired physiological responses, as well as daily administration because of the hormone's short half-life. Thus, practical means of administration and alternative strategies to enhance basal GLP-2 secretion (e.g., through specific feed additives), which are more likely to achieve consumer acceptance, are needed. Opportunities to address these challenges are discussed.
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GLP-2 Prevents Intestinal Mucosal Atrophy and Improves Tissue Antioxidant Capacity in a Mouse Model of Total Parenteral Nutrition. Nutrients 2016; 8:nu8010033. [PMID: 26761030 PMCID: PMC4728647 DOI: 10.3390/nu8010033] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Revised: 01/03/2016] [Accepted: 01/05/2016] [Indexed: 01/04/2023] Open
Abstract
We investigated the effects of exogenous glucagon-like peptide-2 (GLP-2) on mucosal atrophy and intestinal antioxidant capacity in a mouse model of total parenteral nutrition (TPN). Male mice (6–8 weeks old) were divided into three groups (n = 8 for each group): a control group fed a standard laboratory chow diet, and experimental TPN (received standard TPN solution) and TPN + GLP-2 groups (received TPN supplemented with 60 µg/day of GLP-2 for 5 days). Mice in the TPN group had lower body weight and reduced intestinal length, villus height, and crypt depth compared to the control group (all p < 0.05). GLP-2 supplementation increased all parameters compared to TPN only (all p < 0.05). Intestinal total superoxide dismutase activity and reduced-glutathione level in the TPN + GLP-2 group were also higher relative to the TPN group (all p < 0.05). GLP-2 administration significantly upregulated proliferating cell nuclear antigen expression and increased glucose-regulated protein (GRP78) abundance. Compared with the control and TPN + GLP-2 groups, intestinal cleaved caspase-3 was increased in the TPN group (all p < 0.05). This study shows GLP-2 reduces TPN-associated intestinal atrophy and improves tissue antioxidant capacity. This effect may be dependent on enhanced epithelial cell proliferation, reduced apoptosis, and upregulated GRP78 expression.
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Naberhuis JK, Deutsch AS, Tappenden KA. Teduglutide-Stimulated Intestinal Adaptation Is Complemented and Synergistically Enhanced by Partial Enteral Nutrition in a Neonatal Piglet Model of Short Bowel Syndrome. JPEN J Parenter Enteral Nutr 2015; 41:853-865. [PMID: 26304601 DOI: 10.1177/0148607115602891] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND Teduglutide, a glucagon-like peptide-2 (GLP-2) analogue, is available for long-term use by parenteral nutrition (PN)-dependent adults to promote intestinal adaptation but is not approved for use in pediatric patients. The objective of this study was to assess teduglutide-stimulated induced intestinal adaptation, potential synergies with partial enteral nutrition (PEN), and distinct temporal markers of adaptation in a neonatal piglet model of short bowel syndrome (SBS). MATERIALS AND METHODS Neonatal piglets (48 hours old; n = 72) underwent an 80% jejunoileal resection and were randomized to 1 of 4 treatment groups, in a 2 × 2 factorial design, with PN or PEN (80% standard PN/20% standard enteral nutrition) and teduglutide (0.1 mg/kg/d) or control. Piglets received nutrient infusions for 4 hours, 48 hours, or 7 days. RESULTS Teduglutide improved ( P < .05) mucosal surface area (villus height: duodenum, jejunum, ileum; crypt depth: ileum, colon; proliferation: duodenum, jejunum, ileum; colon; apoptosis: jejunum, ileum, colon) and acute nutrient processing capacity (glucose: duodenum, jejunum, ileum; glutamine: duodenum, jejunum). These effects were complemented and synergistically enhanced by PEN in both site and timing of action. Structural adaptations preceded functional adaptations, but crypt depth remained a strong indicator of adaptation, regardless of time. CONCLUSIONS The combination of teduglutide and PEN enhances intestinal adaptation beyond that of either therapy alone.
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Affiliation(s)
- Jane K Naberhuis
- 1 Division of Nutritional Sciences, University of Illinois, Urbana, Illinois, USA
| | - Andrew S Deutsch
- 1 Division of Nutritional Sciences, University of Illinois, Urbana, Illinois, USA
| | - Kelly A Tappenden
- 1 Division of Nutritional Sciences, University of Illinois, Urbana, Illinois, USA.,2 Department of Food Science and Human Nutrition, University of Illinois, Urbana, Illinois, USA
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Sangild PT, Ney DM, Sigalet DL, Vegge A, Burrin D. Animal models of gastrointestinal and liver diseases. Animal models of infant short bowel syndrome: translational relevance and challenges. Am J Physiol Gastrointest Liver Physiol 2014; 307:G1147-68. [PMID: 25342047 PMCID: PMC4269678 DOI: 10.1152/ajpgi.00088.2014] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Intestinal failure (IF), due to short bowel syndrome (SBS), results from surgical resection of a major portion of the intestine, leading to reduced nutrient absorption and need for parenteral nutrition (PN). The incidence is highest in infants and relates to preterm birth, necrotizing enterocolitis, atresia, gastroschisis, volvulus, and aganglionosis. Patient outcomes have improved, but there is a need to develop new therapies for SBS and to understand intestinal adaptation after different diseases, resection types, and nutritional and pharmacological interventions. Animal studies are needed to carefully evaluate the cellular mechanisms, safety, and translational relevance of new procedures. Distal intestinal resection, without a functioning colon, results in the most severe complications and adaptation may depend on the age at resection (preterm, term, young, adult). Clinically relevant therapies have recently been suggested from studies in preterm and term PN-dependent SBS piglets, with or without a functional colon. Studies in rats and mice have specifically addressed the fundamental physiological processes underlying adaptation at the cellular level, such as regulation of mucosal proliferation, apoptosis, transport, and digestive enzyme expression, and easily allow exogenous or genetic manipulation of growth factors and their receptors (e.g., glucagon-like peptide 2, growth hormone, insulin-like growth factor 1, epidermal growth factor, keratinocyte growth factor). The greater size of rats, and especially young pigs, is an advantage for testing surgical procedures and nutritional interventions (e.g., PN, milk diets, long-/short-chain lipids, pre- and probiotics). Conversely, newborn pigs (preterm or term) and weanling rats provide better insights into the developmental aspects of treatment for SBS in infants owing to their immature intestines. The review shows that a balance among practical, economical, experimental, and ethical constraints will determine the choice of SBS model for each clinical or basic research question.
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Affiliation(s)
- Per T. Sangild
- 1Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark; ,2Department of Paediatrics and Adolescent Medicine, Rigshospitalet, Copenhagen, Denmark;
| | - Denise M. Ney
- 3Department of Nutritional Sciences, University of Wisconsin-Madison, Madison, Wisconsin;
| | | | - Andreas Vegge
- 1Department of Nutrition, Exercise and Sports, Faculty of Science, University of Copenhagen, Frederiksberg, Denmark; ,5Diabetes Pharmacology, Novo Nordisk, Måløv, Denmark; and
| | - Douglas Burrin
- 6USDA-ARS Children's Nutrition Research Center, Baylor College of Medicine, Houston, Texas
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Williams JM, Duckworth CA, Burkitt MD, Watson AJM, Campbell BJ, Pritchard DM. Epithelial cell shedding and barrier function: a matter of life and death at the small intestinal villus tip. Vet Pathol 2014; 52:445-55. [PMID: 25428410 PMCID: PMC4441880 DOI: 10.1177/0300985814559404] [Citation(s) in RCA: 220] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The intestinal epithelium is a critical component of the gut barrier. Composed of a single layer of intestinal epithelial cells (IECs) held together by tight junctions, this delicate structure prevents the transfer of harmful microorganisms, antigens, and toxins from the gut lumen into the circulation. The equilibrium between the rate of apoptosis and shedding of senescent epithelial cells at the villus tip, and the generation of new cells in the crypt, is key to maintaining tissue homeostasis. However, in both localized and systemic inflammation, this balance may be disturbed as a result of pathological IEC shedding. Shedding of IECs from the epithelial monolayer may cause transient gaps or microerosions in the epithelial barrier, resulting in increased intestinal permeability. Although pathological IEC shedding has been observed in mouse models of inflammation and human intestinal conditions such as inflammatory bowel disease, understanding of the underlying mechanisms remains limited. This process may also be an important contributor to systemic and intestinal inflammatory diseases and gut barrier dysfunction in domestic animal species. This review aims to summarize current knowledge about intestinal epithelial cell shedding, its significance in gut barrier dysfunction and host-microbial interactions, and where research in this field is directed.
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Affiliation(s)
- J M Williams
- Department of Gastroenterology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - C A Duckworth
- Department of Gastroenterology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - M D Burkitt
- Department of Gastroenterology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - A J M Watson
- Norwich Medical School, University of East Anglia, Norwich Research Park, Norwich, United Kingdom
| | - B J Campbell
- Department of Gastroenterology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
| | - D M Pritchard
- Department of Gastroenterology, Institute of Translational Medicine, University of Liverpool, Liverpool, United Kingdom
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Suri M, Turner JM, Sigalet DL, Wizzard PR, Nation PN, Ball RO, Pencharz PB, Brubaker PL, Wales PW. Exogenous glucagon-like peptide-2 improves outcomes of intestinal adaptation in a distal-intestinal resection neonatal piglet model of short bowel syndrome. Pediatr Res 2014; 76:370-7. [PMID: 24995913 DOI: 10.1038/pr.2014.97] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2013] [Accepted: 04/02/2014] [Indexed: 02/07/2023]
Abstract
BACKGROUND Endogenous glucagon-like peptide-2 (GLP-2) levels and intestinal adaptation are reduced in distal-intestinal resection animal models of short bowel syndrome (SBS) that lack remnant ileum. We hypothesized that exogenous GLP-2 would improve intestinal adaptation in a distal-intestinal resection neonatal piglet model of SBS. METHODS In all, 35 piglets were randomized to 2 treatment and 3 surgical groups: control (sham), 75% mid-intestinal resection (JI), and 75% distal-intestinal resection (JC). Parenteral nutrition (PN) commenced on day 1 and was weaned as enteral nutrition (EN) advanced. IV GLP-2 (11 nmol/kg/d) or saline was initiated on day 2. Piglets were maintained for 14 d. Clinical, functional, morphological, and histological outcomes were obtained. RESULTS JC-GLP-2 piglets had fewer days on PN (10.0 ± 0.6 vs. 13.8 ± 0.2), more days on EN (4.0 ± 0.6 vs. 0.2 ± 0.2), a higher percentage of EN at termination (92 ± 5 vs. 52 ± 10%), fewer days of diarrhea (8.0 ± 0.7 vs. 12.3 ± 0.4), increased intestinal length (19 ± 4 vs. -5 ± 3%), and deeper jejunal crypts (248 ± 21 vs. 172 ± 12 μm), compared with saline piglets. CONCLUSION GLP-2 therapy improves clinical, morphological, and histological outcomes of intestinal adaptation in a distal-intestinal resection model of SBS. Since this anatomical subtype represents the majority of clinical cases of neonatal SBS, these results support a potential role for GLP-2 therapy in pediatric SBS.
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Affiliation(s)
- Megha Suri
- Department of General Surgery, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Justine M Turner
- Department of Paediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - David L Sigalet
- Department of General Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Pamela R Wizzard
- Department of Paediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Patrick N Nation
- Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada
| | - Ron O Ball
- Department of Agricultural Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada
| | - Paul B Pencharz
- 1] Research Institute, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada [2] Department of Paediatrics, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada [3] Department of Nutritional Sciences, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Patricia L Brubaker
- 1] Department of Physiology, University of Toronto, Toronto, Ontario, Canada [2] Department of Medicine, University of Toronto, Toronto, Ontario, Canada
| | - Paul W Wales
- 1] Department of General Surgery, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada [2] Department of Paediatrics, University of Alberta, Edmonton, Alberta, Canada [3] Research Institute, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
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Guan X. The CNS glucagon-like peptide-2 receptor in the control of energy balance and glucose homeostasis. Am J Physiol Regul Integr Comp Physiol 2014; 307:R585-96. [PMID: 24990862 DOI: 10.1152/ajpregu.00096.2014] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The gut-brain axis plays a key role in the control of energy balance and glucose homeostasis. In response to luminal stimulation of macronutrients and microbiota-derived metabolites (secondary bile acids and short chain fatty acids), glucagon-like peptides (GLP-1 and -2) are cosecreted from endocrine L cells in the gut and coreleased from preproglucagonergic neurons in the brain stem. Glucagon-like peptides are proposed as key mediators for bariatric surgery-improved glycemic control and energy balance. Little is known about the GLP-2 receptor (Glp2r)-mediated physiological roles in the control of food intake and glucose homeostasis, yet Glp1r has been studied extensively. This review will highlight the physiological relevance of the central nervous system (CNS) Glp2r in the control of energy balance and glucose homeostasis and focuses on cellular mechanisms underlying the CNS Glp2r-mediated neural circuitry and intracellular PI3K signaling pathway. New evidence (obtained from Glp2r tissue-specific KO mice) indicates that the Glp2r in POMC neurons is essential for suppressing feeding behavior, gastrointestinal motility, and hepatic glucose production. Mice with Glp2r deletion selectively in POMC neurons exhibit hyperphagic behavior, accelerated gastric emptying, glucose intolerance, and hepatic insulin resistance. GLP-2 differentially modulates postsynaptic membrane excitability of hypothalamic POMC neurons in Glp2r- and PI3K-dependent manners. GLP-2 activates the PI3K-Akt-FoxO1 signaling pathway in POMC neurons by Glp2r-p85α interaction. Intracerebroventricular GLP-2 augments glucose tolerance, suppresses glucose production, and enhances insulin sensitivity, which require PI3K (p110α) activation in POMC neurons. Thus, the CNS Glp2r plays a physiological role in the control of food intake and glucose homeostasis. This review will also discuss key questions for future studies.
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Affiliation(s)
- Xinfu Guan
- U.S. Department of Agriculture/Agricultural Research Service, Children's Nutrition Research Center, Department of Pediatrics; and Division of Diabetes, Endocrinology and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas
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Thymann T, Le Huërou-Luron I, Petersen YM, Hedemann MS, Elinf J, Jensen BB, Holst JJ, Hartmann B, Sangild PT. Glucagon-like peptide 2 treatment may improve intestinal adaptation during weaning. J Anim Sci 2014; 92:2070-9. [PMID: 24663206 DOI: 10.2527/jas.2013-7015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Transition from sow's milk to solid feed is associated with intestinal atrophy and diarrhea. We hypothesized that the intestinotrophic hormone glucagon-like peptide 2 (GLP-2) would induce a dose- and health status-dependent effect on gut adaptation. In Exp. 1, weaned pigs (average BW at weaning 4.98 ± 0.18 kg) were kept in a high-sanitary environment and injected with saline or short-acting GLP-2 (80 μg/(kg BW·12 h); n = 8). Under these conditions, there was no diarrhea and GLP-2 did not improve gastrointestinal structure or function. In Exp. 2, weaned pigs (average BW at weaning 6.68 ± 0.27 kg) were kept in a low-sanitary environment, leading to weaning diarrhea, and injected with saline or short-acting GLP-2 (200 µg/(kg BW·12 h); n = 11). Treatment with GLP-2 increased goblet cell density (P < 0.05) and reduced short chain fatty acid concentration in the colon (P < 0.01) but had limited effects on diarrhea. In Exp. 3, weaned pigs (average BW at weaning 6.90 ± 0.32 kg) were kept in a low-sanitary environment and injected with saline or a long-acting acylated GLP-2 analogue (25 µg/(kg BW·12 h); n = 8). In this experiment, GLP-2 increased intestinal weight (+22%; P < 0.01) and activity of brush border enzymes (+50-100%; P < 0.05). Circulating GLP-2 levels were in the pharmacological range in Exp. 3 (constant levels >20,000 pmol/L) and Exp. 2 (increases to 20,000 pmol/L for a few hours each day) while they were in the supraphysiological range in Exp. 1 (50-200 pmol/L). In conclusion, GLP-2 may improve gut structure and function in weanling pigs. However, the effects may be significant only under conditions of diarrhea and if GLP-2 exposure time is extended using long-acting analogues.
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Affiliation(s)
- T Thymann
- University of Copenhagen, Dep. of Human Nutrition, Exercise and Sports, DK-1958 Frederiksberg, Denmark
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Górka P, Pietrzak P, Kotunia A, Zabielski R, Kowalski Z. Effect of method of delivery of sodium butyrate on maturation of the small intestine in newborn calves. J Dairy Sci 2014; 97:1026-35. [DOI: 10.3168/jds.2013-7251] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Accepted: 10/25/2013] [Indexed: 11/19/2022]
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