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Insulin, Testosterone, and Albumin in Term and Preterm Breast Milk, Donor Milk, and Infant Formula. Nutrients 2023; 15:nu15061476. [PMID: 36986206 PMCID: PMC10051190 DOI: 10.3390/nu15061476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 03/10/2023] [Accepted: 03/15/2023] [Indexed: 03/22/2023] Open
Abstract
Background: Infants have three options for feeding: their own mother’s breast milk, donor milk, or infant formula. Insulin, testosterone, total protein, and albumin levels were measured in breast milk samples from the first 6 months of lactation, in donor milk samples, and in different infant formulas. Methods: Mothers who gave birth to term (n = 19) or preterm (n = 19) infants were recruited to collect breast milk samples during the first 6 months of lactation. The Breast Milk Collection Center (Unified Health Institution, Pécs, Hungary) provided 96 donor milk (DM) samples for analysis in our study. Insulin, testosterone, total protein, and albumin levels were measured in breast milk, donor milk, and infant formulas. Results: During the first 2 months of lactation, the concentration of insulin was lower (−27.4%) while the testosterone concentration was higher (+20.8%) compared to the period between the 3rd and 6th months only in the preterm breast milk samples. The infant formulas examined did not contain insulin or testosterone. Holder pasteurization (HoP) did not influence the level of testosterone in human milk, although HoP decreased the insulin (−53.6%) and albumin (−38.6%) concentrations. Conclusions: Diet impacts the hormone intake of infants, underlining the importance of breastfeeding and the possible supplementation of formula-fed infants.
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Abstract
Introduction: The goal for pediatric short bowel syndrome (SBS) patients is intestinal adaptation. Until recently, the medical management of pediatric SBS has centered on the prevention and treatment of complications in order to allow time for adaptation. Teduglutide, glucagon-like peptide 2 (GLP-2) analog, has recently been approved for use in pediatric SBS patients greater than 1 year of age as a novel agent to augment intestinal adaptation. Areas covered: This article reviews the pharmacology, safety, efficacy, and tolerability of GLP-2 analog teduglutide in pediatric patients greater than 1 year of age. We review all current studies and discuss teduglutide's place in pediatric SBS therapy. Expert opinion: Teduglutide marks the first successful pharmacological intervention that augments the natural process of adaptation safely and effectively in SBS pediatric patients. More studies and further development are needed to optimize its potential in other pediatric patients.
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Affiliation(s)
- Beatrice E Rosete
- Department of Pharmacy, Seattle Children's Hospital, Seattle, WA, USA.,School of Pharmacy, University of Washington, Seattle, WA, USA
| | - Danielle Wendel
- Department of Gastroenterology, Hepatology and Nutrition, Seattle Children's Hospital, Seattle, WA, USA.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
| | - Simon P Horslen
- Department of Gastroenterology, Hepatology and Nutrition, Seattle Children's Hospital, Seattle, WA, USA.,Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
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Young BE, Murphy K, Borman LL, Heinrich R, Krebs NF. Milk Bank Pooling Practices Impact Concentrations and Variability of Bioactive Components of Donor Human Milk. Front Nutr 2020; 7:579115. [PMID: 33123548 PMCID: PMC7573550 DOI: 10.3389/fnut.2020.579115] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 08/26/2020] [Indexed: 12/22/2022] Open
Abstract
Background: Donor human milk (DHM) bank practices, such as pasteurization and pooling according to postpartum age of milk donations and number of donors included in a pool may impact the resulting concentration of bioactive components of DHM. Aims: We determined the impact of Holder pasteurization, postpartum milk age, and pool donor number (number of donors included in a pool) on resulting concentrations of total immunoglobulin A (IgA; which provides immune protection to the recipient infant) and insulin (an important hormone for gut maturation).We also documented inter-relationships between these bioactive components and macronutrients in DHM pools. Methods: Pre and post-pasteurization aliquots of 128 DHM samples were obtained from the Rocky Mountain Children's Foundation Mother's Milk Bank (a member of the Human Milk Banking Association of North America, HMBANA). Macronutrients were measured via mid-infrared spectroscopy. Total IgA was measured via customized immunoassay in skim milk and insulin was measured via chemiluminescent immunoassay. Results: Mean post-pasteurization total IgA concentration was 0.23 ± 0.10 (range: 0.04-0.65) mg/mL a 17.9% decrease due to pasteurization (n = 126). Mean post-pasteurization DHM insulin concentration was 7.0 ± 4.6 (range: 3-40) μU/mL, a decrease of 13.6% due to pasteurization (n = 128). The average DHM pool postpartum milk age was not associated with total IgA or insulin concentrations, but pool donor number was associated with bioactive components. Pools with only one donor had lower total IgA and lower insulin concentrations than pools with at least 2 donors (p < 0.05). Increasing the number of donors in a pool decreased the variability in total IgA and insulin concentrations (p < 0.04). Conclusion: Increasing the number of donors included in DHM pools may help optimize bioactive components in DHM received by premature infants. These results help inform milk banking practices to decrease compositional variability in produced DHM pools.
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Affiliation(s)
- Bridget E Young
- Department of Pediatrics Allergy and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Katherine Murphy
- Department of Pediatrics Allergy and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, NY, United States
| | - Laraine L Borman
- Mothers' Milk Bank, Rocky Mountain Children's Health Foundation, Arvada, CO, United States
| | - Rebecca Heinrich
- Mothers' Milk Bank, Rocky Mountain Children's Health Foundation, Arvada, CO, United States
| | - Nancy F Krebs
- Department of Pediatrics - Section of Nutrition, University of Colorado School of Medicine, Aurora, CO, United States
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Vass RA, Bell EF, Colaizy TT, Schmelzel ML, Johnson KJ, Walker JR, Ertl T, Roghair RD. Hormone levels in preterm and donor human milk before and after Holder pasteurization. Pediatr Res 2020; 88:612-617. [PMID: 32000260 DOI: 10.1038/s41390-020-0789-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 01/13/2020] [Accepted: 01/24/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND After birth, breastfeeding is the exclusive source of hormonal signaling between mother and infant. Hospitalized infants often receive donor milk when their own mother's milk is unavailable. METHODS The presence of insulin, leptin, cortisol, progesterone, and testosterone was examined in samples from milk bank donors and mothers of preterm infants. We further investigated the effect of Holder pasteurization (HoP) on hormone levels. RESULTS Comparing nonpasteurized samples, leptin levels were nearly threefold higher in milk from mothers of preterm infants versus donated milk, and regardless of milk source, leptin levels were significantly decreased by HoP. Insulin concentrations were also decreased by HoP, and among mothers of preterm infants, obesity was associated with significantly higher content of leptin and insulin. While combined use of donor milk and HoP was associated with cortisol levels nearly threefold higher than those in nonpasteurized own mother's milk, progesterone and testosterone content did not differ by source or pasteurization. CONCLUSIONS The hormonal composition of breast milk is impacted by HoP and maternal obesity. Compared to nonpasteurized maternal milk, use of pasteurized donor milk dramatically decreases the intake of leptin while increasing the intake of cortisol. Further research is necessary to define optimal breast milk processing practices.
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Affiliation(s)
- Réka A Vass
- Departments of Neonatology and Obstetrics & Gynecology, University of Pécs Medical School, Pécs, Hungary.,MTA-PTE Human Reproduction Scientific Research Group, Pécs, Hungary
| | - Edward F Bell
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Tarah T Colaizy
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Mendi L Schmelzel
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Karen J Johnson
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Jacky R Walker
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA
| | - Tibor Ertl
- Departments of Neonatology and Obstetrics & Gynecology, University of Pécs Medical School, Pécs, Hungary.,MTA-PTE Human Reproduction Scientific Research Group, Pécs, Hungary
| | - Robert D Roghair
- Department of Pediatrics, University of Iowa Carver College of Medicine, Iowa City, IA, USA.
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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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Wendel D, Ho BE, Kaenkumchorn T, Horslen SP. Advances in non-surgical treatment for pediatric patients with short bowel syndrome. Expert Opin Orphan Drugs 2020. [DOI: 10.1080/21678707.2020.1770079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Danielle Wendel
- Division of Gastroenterology and Hepatology, Seattle Children’s Hospital, Seattle, WA, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
| | - Beatrice E. Ho
- Department of Pharmacy, Seattle Children’s Hospital, Seattle, WA, USA
- School of Pharmacy, University of Washington, Seattle, WA, USA
| | - Tanyaporn Kaenkumchorn
- Division of Gastroenterology and Hepatology, Seattle Children’s Hospital, Seattle, WA, USA
| | - Simon P. Horslen
- Division of Gastroenterology and Hepatology, Seattle Children’s Hospital, Seattle, WA, USA
- Department of Pediatrics, University of Washington School of Medicine, Seattle, WA, USA
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Norsa L, Nicastro E, Di Giorgio A, Lacaille F, D'Antiga L. Prevention and Treatment of Intestinal Failure-Associated Liver Disease in Children. Nutrients 2018; 10:nu10060664. [PMID: 29882922 PMCID: PMC6024802 DOI: 10.3390/nu10060664] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2018] [Revised: 05/21/2018] [Accepted: 05/22/2018] [Indexed: 01/01/2023] Open
Abstract
Intestinal failure-associated liver disease (IFALD) is a threatening complication for children on long-term parenteral nutrition because of intestinal failure. When progressive and intractable, it may jeopardize intestinal rehabilitation and lead to combined liver and intestinal transplantation. The institution of dedicated intestinal failure centers has dramatically decreased the incidence of such complication. IFALD may rapidly fade away if very early management aimed at preventing progression to end-stage liver disease is provided. In this review, we address the etiology and risk factors of IFALD in order to introduce pillars of prevention (nutritional management and catheter-related infections control). The latest evidence of therapeutic strategies, such as medical and surgical treatments, is also discussed.
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Affiliation(s)
- Lorenzo Norsa
- Pediatric Gastroenterology Hepatology and Nutrition, Ospedale Papa Giovanni XXIII, 24127 Bergamo, Italy.
| | - Emanuele Nicastro
- Pediatric Gastroenterology Hepatology and Nutrition, Ospedale Papa Giovanni XXIII, 24127 Bergamo, Italy.
| | - Angelo Di Giorgio
- Pediatric Gastroenterology Hepatology and Nutrition, Ospedale Papa Giovanni XXIII, 24127 Bergamo, Italy.
| | - Florence Lacaille
- Pediatric Gastroenterology Hepatology and Nutrition, Hôpital Necker Enfants Malades, 75015 Paris, France.
| | - Lorenzo D'Antiga
- Pediatric Gastroenterology Hepatology and Nutrition, Ospedale Papa Giovanni XXIII, 24127 Bergamo, Italy.
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9
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Batra A, Keys SC, Johnson MJ, Wheeler RA, Beattie RM. Epidemiology, management and outcome of ultrashort bowel syndrome in infancy. Arch Dis Child Fetal Neonatal Ed 2017; 102:F551-F556. [PMID: 28866623 PMCID: PMC5739827 DOI: 10.1136/archdischild-2016-311765] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Revised: 07/11/2017] [Accepted: 07/13/2017] [Indexed: 12/25/2022]
Abstract
Ultrashort bowel syndrome (USBS) is a group of heterogeneous disorders where the length of small bowel is less than 10 cm or 10% of expected for the age. It is caused by massive loss of the gut which in the neonatal period can be a result of vanishing gastroschisis or surgical resection following mid-gut volvulus, jejunoileal atresia and/or extensive necrotising enterocolitis. The exact prevalence of USBS is not known although there is a clear trend towards increasing numbers because of increased incidence and improved survival. Long-term parenteral nutrition (PN) is the mainstay of treatment and is best delivered by a multidisciplinary intestinal rehabilitation team. Promoting adaptation is vital to improving long-term survival and can be achieved by optimising feeds, reducing intestinal failure liver disease and catheter-related bloodstream infections. Surgical techniques that can promote enteral tolerance and hence improve outcome include establishing intestinal continuity and bowel lengthening procedures. The outcome for USBS is similar to patients with intestinal failure due to other causes and only a small proportion of children who develop irreversible complications of PN and will need intestinal transplantation. In this review, we will summarise the available evidence focusing particularly on the epidemiology, management strategies and outcome.
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Affiliation(s)
- Akshay Batra
- Department of Paediatric Gastroenterology, Southampton Children’s Hospital, Southampton, UK
| | - Simon Charlie Keys
- Wessex Regional Pediatric Surgery, Southampton Children’s Hospital, Southampton, UK
| | - Mark John Johnson
- Department of Neonatal Medicine, Southampton Children’s Hospital, Southampton, UK
| | - Robert A Wheeler
- Wessex Regional Pediatric Surgery, Southampton Children’s Hospital, Southampton, UK
| | - Robert Mark Beattie
- Department of Paediatric Gastroenterology, Southampton Children’s Hospital, Southampton, UK
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Capriati T, Nobili V, Stronati L, Cucchiara S, Laureti F, Liguori A, Tyndall E, Diamanti A. Enteral nutrition in pediatric intestinal failure: does initial feeding impact on intestinal adaptation? Expert Rev Gastroenterol Hepatol 2017; 11:741-748. [PMID: 28562106 DOI: 10.1080/17474124.2017.1335196] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Primary IF can be due to impaired gut length or impaired gut function; short bowel syndrome (SBS) is the leading cause of IF. In IF patients complete enteral starvation should be avoided whenever possible and enteral/oral nutrition (EN/ON) should be employed at the maximum tolerated amount in each phase of the clinical evolution of IF. Intraluminal nutrients have stimulatory effects on epithelial cells and on trophism that enhance intestinal adaptation. Areas covered: Evidence for nutritional interventions in pediatric IF is limited and of poor quality. Clinical practice in SBS feeding are more 'experience-based' rather than 'evidence-based' and this dearth of clinical evidence is partly due to the rarity of this condition. This review updates knowledge concerning the impact of the initial diet with EN/ON in neonatal onset SBS in the process of bowel adaption. Expert commentary: Human milk resulted the preferred starting diet and it is generally combined with amino-acids (AAs) in Northern America and with hydrolyzed proteins (HFs) in Europe; polymeric diet is rarely employed. HFs were not more effective than AAs in promoting intestinal adaptation.
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Affiliation(s)
- Teresa Capriati
- a Department of Pediatrics , Pediatric Hospital "Bambino Gesù" , Rome , Italy
| | - Valerio Nobili
- b Liver Res Unit , IRCCS, Bambino Gesu Children Hosp , Rome , Italy
| | - Laura Stronati
- c Department of Pediatrics , Universita degli Studi di Roma La Sapienza Facolta di Medicina e Psicologia , Rome , Italy
| | | | - Francesca Laureti
- a Department of Pediatrics , Pediatric Hospital "Bambino Gesù" , Rome , Italy
| | - Alessandra Liguori
- a Department of Pediatrics , Pediatric Hospital "Bambino Gesù" , Rome , Italy
| | - Elaine Tyndall
- a Department of Pediatrics , Pediatric Hospital "Bambino Gesù" , Rome , Italy
| | - Antonella Diamanti
- a Department of Pediatrics , Pediatric Hospital "Bambino Gesù" , Rome , Italy
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Sun RC, Choi PM, Diaz-Miron JL, Sommovilla J, Guo J, Erwin CR, Warner BW. Epithelial IGF1R is dispensable for IGF2 mediated enhanced intestinal adaptation in retinoblastoma-deficient mice. J Pediatr Surg 2017; 52:1026-1030. [PMID: 28343662 PMCID: PMC5466888 DOI: 10.1016/j.jpedsurg.2017.03.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Accepted: 03/09/2017] [Indexed: 11/26/2022]
Abstract
PURPOSE Previously, we demonstrated enhanced adaptation after small bowel resection (SBR) in intestinal-specific retinoblastoma (Rb)-deficient mice along with elevated levels of insulin-like growth factor 2 (IGF2) expression within the villi. The purpose of this study was to verify that the insulin-like growth factor 1 receptor (IGF1R) plays a role in this phenomenon. METHODS Inducible and intestinal specific Rb and IGF1R double knockout mice (iRb/IGF1R-IKO) (n=4) and Rb single knockout mice (iRb-IKO) (n=5) underwent 50% mid SBR. On post-operative day 28, mice were harvested, and structural adaptation was measured as changes in crypt depth and villus height. Rates of enterocyte proliferation were recorded. IGF2 expression within the remnant villi was measured via RT-PCR. RESULTS Both iRb-IKO and iRb/IGF1R-IKO mice demonstrated enhanced adaptation with at least a 45% increase in both crypt depth and villus height in the proximal and distal remnant bowel. Both groups showed elevation of IGF2 expression in the remnant villi, but there were no differences between the two groups. CONCLUSION Epithelial IGF1R is dispensable for IGF2-mediated enhanced intestinal adaptation in retinoblastoma-deficient mice. Our findings suggest that IGF2 signals for enhanced adaptation in cells outside of the epithelium. Further investigation is needed to study the IGF2/IGF1R signaling interaction within the mesenchyme. LEVEL OF EVIDENCE Animal study - not clinical.
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Promoting intestinal adaptation by nutrition and medication. Best Pract Res Clin Gastroenterol 2016; 30:249-61. [PMID: 27086889 DOI: 10.1016/j.bpg.2016.03.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 03/01/2016] [Indexed: 01/31/2023]
Abstract
The ultimate goal in the treatment of short bowel syndrome is to wean patients off parenteral nutrition, by promoting intestinal adaptation. Intestinal adaptation is the natural compensatory process that occurs after small bowel resection. Stimulating the remaining bowel with enteral nutrition can enhance this process. Additionally, medication can be used to either reduce factors that complicate the adaptation process or to stimulate intestinal adaptation, such as antisecretory drugs and several growth factors. The aim of this review was to provide an overview of the best nutritional strategies and medication that best promote intestinal adaptation.
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Lim DW, Wales PW, Turner JM, Bigam DL, Brubaker PL. On the horizon: trophic peptide growth factors as therapy for neonatal short bowel syndrome. Expert Opin Ther Targets 2016; 20:819-30. [DOI: 10.1517/14728222.2016.1146695] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- David W. Lim
- Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Paul W. Wales
- Department of Surgery, University of Toronto & Hospital for Sick Children, Toronto, ON, Canada
| | - Justine M. Turner
- Department of Pediatrics, University of Alberta, Edmonton, AB, Canada
| | - David L. Bigam
- Department of Surgery, University of Alberta, Edmonton, AB, Canada
| | - Patricia L. Brubaker
- Departments of Physiology and Medicine, University of Toronto, Toronto, ON, Canada
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Oral insulin stimulates intestinal epithelial cell turnover following massive small bowel resection in a rat and a cell culture model. Pediatr Surg Int 2012; 28:179-87. [PMID: 21986618 DOI: 10.1007/s00383-011-2991-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
PURPOSE We have recently reported that oral insulin (OI) stimulates intestinal adaptation after bowel resection and that OI enhances enterocyte turnover in correlation with insulin receptor expression along the villus-crypt axis. The purpose of the present study was to evaluate the effect of OI on intestinal epithelial cell proliferation and apoptosis in a rat model of short bowel syndrome (SBS) and in a cell culture model. METHODS Caco-2 cells were incubated with increasing concentrations of insulin. Cell proliferation and apoptosis were determined by FACS cytometry. Cell viability was investigated using the Alamar Blue technique. Male rats were divided into three groups: Sham rats underwent bowel transection, SBS rats underwent a 75% bowel resection, and SBS-OI rats underwent bowel resection and were treated with OI given in drinking water (1 U/ml) from the third postoperative day. Parameters of intestinal adaptation, enterocyte proliferation and apoptosis were determined on day 15. Real time PCR was used to determine the level of bax and bcl-2 mRNA and western blotting was used to determine bax, bcl-2, p-ERK and AKT protein levels. Statistical analysis was performed using the one-way ANOVA test, with P < 0.05 considered statistically significant. RESULTS Treatment of Caco-2 cells with insulin resulted in a significant increase in cell proliferation (twofold increase after 24 h and 37% increase after 48 h) and cell viability (in a dose-dependent manner), but did not change cell apoptosis. In a rat model of SBS, treatment with OI resulted in a significant increase in all parameters of intestinal adaptation. Elevated cell proliferation rate in insulin treated rats was accompanied by elevated AKT and p-ERK protein levels. Decreased cell apoptosis in SBS-INS rats corresponded with a decreased bax/bcl-2 ratio. CONCLUSIONS Oral insulin stimulates intestinal epithelial cell turnover after massive small bowel resection in a rat model of SBS and a cell culture model.
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Ben Lulu S, Coran AG, Mogilner JG, Shaoul R, Shamir R, Shehadeh N, Sukhotnik I. Oral insulin stimulates intestinal epithelial cell turnover in correlation with insulin-receptor expression along the villus-crypt axis in a rat model of short bowel syndrome. Pediatr Surg Int 2010; 26:37-44. [PMID: 19847442 DOI: 10.1007/s00383-009-2520-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE It has been reported that oral insulin (OI) has a trophic effect on intestinal mucosa. In the present study, we evaluated the effect of OI on enterocyte turnover and correlated it with insulin-receptor expression along the villus-crypt axis in a rat model of short bowel syndrome (SBS). METHODS Male rats were divided into three groups: Sham rats underwent bowel transection, SBS rats underwent a 75% bowel resection, and SBS-OI rats underwent bowel resection and were treated with OI given in drinking water (1 U/ml) from the fourth postoperative day. Parameters of intestinal adaptation, enterocyte proliferation and apoptosis were determined on day 15. Real-time PCR was used to determine the level of insulin receptor-beta (IRB) mRNA. Insulin-receptor expression along the villus-crypt axis (villus tips, lateral villi and crypts) was assessed by immunohistochemistry. The effect of OI on cell turnover for each compartment was evaluated in correlation with the receptor expression. Statistical analysis was performed using the one-way ANOVA test, with P < 0.05 considered statistically significant. RESULTS Treatment with OI resulted in a significant increase in all parameters of intestinal adaptation. Insulin-receptor expression in crypts significantly increased in SBS rats (vs. Sham rats) and was accompanied by a significant increase in enterocyte proliferation following OI administration. A significant increase in insulin-receptor expression at the tip of the villous and in the lateral villous in SBS rats (vs. Sham) was accompanied by decreased cell apoptosis in these compartments following treatment with OI. CONCLUSIONS In a rat model of SBS, OI enhances enterocyte turnover and stimulates intestinal adaptation. The stimulating effect of insulin on enterocyte turnover correlates with insulin-receptor expression along the villus-crypt axis.
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Affiliation(s)
- Shani Ben Lulu
- Laboratory of Intestinal Adaptation and Recovery, Technion-Israel Institute of Technology, The Ruth & Bruce Rappaport Faculty of Medicine, Haifa, Israel
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