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Belnour S, Slater R, Tharmaratnam K, Karl‐Heinz Auth M, Muhammed R, Spray C, Wang D, Zeeshan Ijaz U, Probert C, Allen S. Faecal volatile organic compounds differ according to inflammatory bowel disease sub-type, severity, and response to treatment in paediatric patients. United European Gastroenterol J 2024; 12:780-792. [PMID: 38922802 PMCID: PMC11249809 DOI: 10.1002/ueg2.12603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 04/30/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Faecal volatile organic compounds (VOCs) differ with disease sub-type and activity in adults with established inflammatory bowel disease (IBD) taking therapy. OBJECTIVE To describe patterns of faecal VOCs in children newly presented with IBD according to disease sub-type, severity, and response to treatment. METHODS Children presenting with suspected IBD were recruited from three UK hospitals. Children in whom IBD was diagnosed were matched with a non-IBD child for age, sex, and recruitment site. Faecal VOCs were characterised by gas chromatography-mass spectrometry at presentation and 3 months later in children with IBD. RESULTS In 132 case/control pairs, median (inter-quartile range) age in IBD was 13.3 years (10.2-14.7) and 38.6% were female. Compared with controls, the mean abundance of 27/62 (43.6%) faecal VOCs was statistically significantly decreased in Crohn's disease (CD), ulcerative colitis (UC) or both especially amongst ketones/diketones, fatty acids, and alcohols (p < 0.05). Short-chain, medium chain, and branched chain fatty acids were markedly reduced in severe colitis (p < 0.05). Despite clinical improvement in many children with IBD, the number and abundance of almost all VOCs did not increase following treatment, suggesting persistent dysbiosis. Oct-1-en-3-ol was increased in CD (p = 0.001) and UC (p = 0.012) compared with controls and decreased following treatment in UC (p = 0.01). In CD, propan-1-ol was significantly greater than controls (p < 0.001) and extensive colitis (p = 0.001) and fell with treatment (p = 0.05). Phenol was significantly greater in CD (p < 0.001) and fell with treatment in both CD (p = 0.02) and UC (p = 0.01). CONCLUSION Characterisation of faecal VOCs in an inception cohort of children with IBD reveals patterns associated with diagnosis, disease activity, and extent. Further work should investigate the relationship between VOCs and the microbiome in IBD and their role in diagnosis and disease monitoring.
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Affiliation(s)
- Salma Belnour
- Faculty of Health and Life SciencesUniversity of LiverpoolLiverpoolUK
| | - Rachael Slater
- Department of Molecular & Clinical Cancer MedicineInstitute of Systems, Molecular and Integrative BiologyLiverpoolUK
| | | | | | - Rafeeq Muhammed
- Gastroenterology and NutritionBirmingham Children's HospitalBirminghamUK
| | - Christine Spray
- Paediatric GastroenterologyBristol Royal Hospital for ChildrenBristolUK
| | - Duolao Wang
- Department of Clinical SciencesLiverpool School of Tropical MedicineLiverpoolUK
| | | | - Chris Probert
- Department of Molecular & Clinical Cancer MedicineInstitute of Systems, Molecular and Integrative BiologyLiverpoolUK
| | - Stephen Allen
- Paediatric GastroenterologyAlder Hey Children's NHS Foundation TrustLiverpoolUK
- Department of Clinical SciencesLiverpool School of Tropical MedicineLiverpoolUK
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Rasmussen NF, Moos C, Gregersen LHK, Hikmat Z, Andersen V, Green A, Jess T, Madsen GI, Pedersen AK, Petersen SR, Kjeldsen LJ. Impact of sex and socioeconomic status on the likelihood of surgery, hospitalization, and use of medications in inflammatory bowel disease: a systematic review and meta-analysis. Syst Rev 2024; 13:164. [PMID: 38915086 PMCID: PMC11194997 DOI: 10.1186/s13643-024-02584-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 06/14/2024] [Indexed: 06/26/2024] Open
Abstract
BACKGROUND Inflammatory bowel diseases (IBDs) are associated with high healthcare utilization. This systematic review aimed to summarize what is known about the impact of sex, income, and education on the likelihood of bowel surgery, hospitalization, and use of corticosteroids and biologics among patients with IBD. METHODS We used EMBASE, MEDLINE, CINAHL, and Web of Science to perform a systematic literature search. Pooled hazard ratios (HRs) and odds ratios (ORs) with 95% confidence intervals (CIs) were calculated using random effects meta-analysis for the impact of sex on the likelihood of surgery and hospitalization. In addition, we performed subgroup analyses of the effect of IBD type (Crohn's disease or ulcerative colitis) and age. Finally, meta-regression was undertaken for the year of publication. RESULTS In total, 67 studies were included, of which 23 studies were eligible for meta-analysis. In the main meta-analysis, male sex was associated with an increased likelihood of bowel surgery (HR 1.42 (95% CI 1.13;1.78), which was consistent with the subgroup analysis for UC only (HR 1.78, 95% CI 1.16; 2.72). Sex did not impact the likelihood of hospitalization (OR 1.05 (95% CI 0.86;1.30), although the subgroup analysis revealed an increased likelihood of hospitalization in CD patients (OR 1.42, 95% CI 1.28;1.58). In 9 of 10 studies, no significant sex-based differences in the use of biologics were reported, although in 6 of 6 studies, female patients had lower adherence to biologics. In 11 of 13 studies, no significant sex-based difference in the use of corticosteroids was reported. The evidence of the impact of income and education on healthcare utilization was sparse and pointed in different directions. The substantial heterogeneity between studies was explained, in part, by differences in IBD type and age. CONCLUSIONS The results of this systematic review indicate that male patients with IBD are significantly more likely to have surgery than female patients with IBD but are not, overall, more likely to be hospitalized, whereas female patients appear to have statistically significantly lower adherence to biologics compared to male patients. Thus, clinicians should not underestimate the impact of sex on healthcare utilization. Evidence for income- and education-based differences remains sparse. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42022315788.
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Affiliation(s)
- Nathalie Fogh Rasmussen
- Hospital Pharmacy Research Unit, Department of Regional Health Research-IRS, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark.
- National Center of Excellence for Molecular Prediction of Inflammatory Bowel Disease- PREDICT, Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Copenhagen, Denmark.
| | - Caroline Moos
- Department of Clinical Research, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Laura Helene Keiding Gregersen
- Molecular Diagnostics and Clinical Research Unit, Department of Regional Health Research-IRS, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Zainab Hikmat
- Molecular Diagnostics and Clinical Research Unit, Department of Regional Health Research-IRS, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
- Clincial Genome Center, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Vibeke Andersen
- Molecular Diagnostics and Clinical Research Unit, Department of Regional Health Research-IRS, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Anders Green
- Steno Diabetes Center Odense, Odense University Hospital, Odense, Denmark
| | - Tine Jess
- National Center of Excellence for Molecular Prediction of Inflammatory Bowel Disease- PREDICT, Department of Clinical Medicine, Faculty of Medicine, Aalborg University, Copenhagen, Denmark
- Department of Gastroenterology and Hepatology, Aalborg University Hospital, Aalborg, Denmark
| | - Gunvor Iben Madsen
- Department of Clinical Pathology, Odense University Hospital, Odense, Denmark
| | - Andreas Kristian Pedersen
- Department of Clinical Research, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Sofie Ronja Petersen
- Department of Clinical Research, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
| | - Lene Juel Kjeldsen
- Hospital Pharmacy Research Unit, Department of Regional Health Research-IRS, Hospital Sønderjylland, University Hospital of Southern Denmark, Aabenraa, Denmark
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Nutritional characteristic of children with inflammatory bowel disease in the nationwide inflammatory bowel disease registry from the Mediterranean region. Eur J Clin Nutr 2022; 76:1289-1296. [PMID: 35173290 DOI: 10.1038/s41430-022-01094-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 01/11/2022] [Accepted: 01/26/2022] [Indexed: 01/07/2023]
Abstract
BACKGROUND/OBJECTIVES We analyzed the nationwide pediatric inflammatory bowel disease (PIBD) registry (1998-2016), to evaluate the nutritional status at the time of diagnosis. SUBJECTS/METHODS Nine types of nutritional status by the combination of weight-for-length (<2 years)/body mass index (>2 years) and length/height-for-age with three categories (<-2, -2 to 2, and >2 SD) were described. Malnutrition was defined by WHO criteria. Univariate and multivariate regression analysis was used to identify risk factors for malnutrition. RESULTS In total, 824 IBD patients (498 Ulcerative colitis (UC); 289 Crohn's Disease (CD); 37 Indeterminate Colitis (IC); 412 male; the median age 12.5 years) were eligible. The prevalence of eutrophy, wasting/thinness, stunting, overweight, tall stature, concurrent wasting/thinness and stunting, tall stature with overweight, tall stature with wasting/thinness, and short stature with overweight were 67.4%, 14.9%, 6.6%, 3.1%, 3.2%, 3.3%, 1.1%, 0.4%, and 0.1%, respectively. The prevalence of malnutrition was 32.7%, indicating a higher prevalence in CD (p < 0.001). Incidence of overweight was less common in the CD than UC and IC (p < 0.001). Multivariate analysis revealed that age of onset (>10 years), prepubertal stage, severe disease activity, perianal involvement, and high C reactive protein level were independently associated with malnutrition in pediatric IBD. CONCLUSION We showed the frequency of nutritional impairment in PIBD. The percentage of overweight subjects was lower than the other studies. The age of onset, disease activity, CRP level, perianal involvement, and pubertal stage were associated with a higher risk for developing malnutrition. Our results also confirmed that CD patients are particularly vulnerable to nutritional impairment. CLINICAL TRIAL NUMBER ClinicalTrials.gov Identifier: NCT04457518.
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Ricciuto A, Aardoom M, Orlanski-Meyer E, Navon D, Carman N, Aloi M, Bronsky J, Däbritz J, Dubinsky M, Hussey S, Lewindon P, Martín De Carpi J, Navas-López VM, Orsi M, Ruemmele FM, Russell RK, Veres G, Walters TD, Wilson DC, Kaiser T, de Ridder L, Turner D, Griffiths AM. Predicting Outcomes in Pediatric Crohn's Disease for Management Optimization: Systematic Review and Consensus Statements From the Pediatric Inflammatory Bowel Disease-Ahead Program. Gastroenterology 2021; 160:403-436.e26. [PMID: 32979356 DOI: 10.1053/j.gastro.2020.07.065] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 07/09/2020] [Accepted: 07/17/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND & AIMS A better understanding of prognostic factors within the heterogeneous spectrum of pediatric Crohn's disease (CD) should improve patient management and reduce complications. We aimed to identify evidence-based predictors of outcomes with the goal of optimizing individual patient management. METHODS A survey of 202 experts in pediatric CD identified and prioritized adverse outcomes to be avoided. A systematic review of the literature with meta-analysis, when possible, was performed to identify clinical studies that investigated predictors of these outcomes. Multiple national and international face-to-face meetings were held to draft consensus statements based on the published evidence. RESULTS Consensus was reached on 27 statements regarding prognostic factors for surgery, complications, chronically active pediatric CD, and hospitalization. Prognostic factors for surgery included CD diagnosis during adolescence, growth impairment, NOD2/CARD15 polymorphisms, disease behavior, and positive anti-Saccharomyces cerevisiae antibody status. Isolated colonic disease was associated with fewer surgeries. Older age at presentation, small bowel disease, serology (anti-Saccharomyces cerevisiae antibody, antiflagellin, and OmpC), NOD2/CARD15 polymorphisms, perianal disease, and ethnicity were risk factors for penetrating (B3) and/or stenotic disease (B2). Male sex, young age at onset, small bowel disease, more active disease, and diagnostic delay may be associated with growth impairment. Malnutrition and higher disease activity were associated with reduced bone density. CONCLUSIONS These evidence-based consensus statements offer insight into predictors of poor outcomes in pediatric CD and are valuable when developing treatment algorithms and planning future studies. Targeted longitudinal studies are needed to further characterize prognostic factors in pediatric CD and to evaluate the impact of treatment algorithms tailored to individual patient risk.
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Affiliation(s)
- Amanda Ricciuto
- IBD Centre, SickKids Hospital, University of Toronto, Toronto, Canada
| | - Martine Aardoom
- Erasmus Medical Center/Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Esther Orlanski-Meyer
- Institute of Pediatric Gastroenterology, Shaare Zedek Medical Center, the Hebrew University of Jerusalem, Israel
| | - Dan Navon
- Institute of Pediatric Gastroenterology, Shaare Zedek Medical Center, the Hebrew University of Jerusalem, Israel
| | - Nicholas Carman
- Children's Hospital of Eastern Ontario, IBD Centre, Children's Hospital of Eastern Ontario, University of Ottawa, Ottawa, Canada
| | - Marina Aloi
- Pediatric Gastroenterology Unit, Sapienza University of Rome, Umberto I Hospital, Rome, Italy
| | - Jiri Bronsky
- Department of Pediatrics, University Hospital Motol, Prague, Czech Republic
| | - Jan Däbritz
- University Medical Center Rostock, Department of Pediatrics, Rostock, Germany; Queen Mary University of London, The Barts and the London School of Medicine and Dentistry, Blizard Institute, Center for Immunobiology, London, United Kingdom
| | - Marla Dubinsky
- Pediatric Gastroenterology and Nutrition, Mount Sinai Kravis Children's Hospital, Susan and Leonard Feinstein IBD Clinical Center, Icahn School of Medicine, Mount Sinai, New York
| | - Séamus Hussey
- National Children's Research Centre, Royal College of Surgeons of Ireland and University College Dublin, Dublin, Ireland
| | | | - Javier Martín De Carpi
- Department of Pediatric Gastroenterology, Hepatology and Nutrition, Hospital Sant Joan de Déu, Barcelona, Spain
| | | | - Marina Orsi
- Pediatric Gastroenterology, Hepatology and Transplant Unit, Hospital Italiano de Buenos Aires, Argentina
| | - Frank M Ruemmele
- Université Paris Descartes, Sorbonne Paris Cité, Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Service de Gastroentérologie Pédiatrique, Institute IMAGINE Inserm U1163, Paris, France
| | - Richard K Russell
- Department of Paediatric Gastroenterology, Royal Hospital for Sick Children, Edinburgh, Scotland, United Kingdom
| | - Gabor Veres
- Pediatric Institute-Clinic, University of Debrecen, Hungary
| | - Thomas D Walters
- IBD Centre, SickKids Hospital, University of Toronto, Toronto, Canada
| | - David C Wilson
- Child Life and Health, University of Edinburgh, Paediatric Gastroenterology and Nutrition, Royal Hospital for Sick Children, Edinburgh, Scotland, United Kingdom
| | - Thomas Kaiser
- Department of General Pediatrics, University Hospital Münster, Germany
| | - Lissy de Ridder
- Erasmus Medical Center/Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Dan Turner
- Institute of Pediatric Gastroenterology, Shaare Zedek Medical Center, the Hebrew University of Jerusalem, Israel
| | - Anne M Griffiths
- IBD Centre, SickKids Hospital, University of Toronto, Toronto, Canada.
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Orlanski-Meyer E, Aardoom M, Ricciuto A, Navon D, Carman N, Aloi M, Bronsky J, Däbritz J, Dubinsky M, Hussey S, Lewindon P, Martin De Carpi J, Navas-López VM, Orsi M, Ruemmele FM, Russell RK, Veres G, Walters TD, Wilson DC, Kaiser T, de Ridder L, Griffiths A, Turner D. Predicting Outcomes in Pediatric Ulcerative Colitis for Management Optimization: Systematic Review and Consensus Statements From the Pediatric Inflammatory Bowel Disease-Ahead Program. Gastroenterology 2021; 160:378-402.e22. [PMID: 32976826 DOI: 10.1053/j.gastro.2020.07.066] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 07/09/2020] [Accepted: 07/17/2020] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS A better understanding of prognostic factors in ulcerative colitis (UC) could improve patient management and reduce complications. We aimed to identify evidence-based predictors for outcomes in pediatric UC, which may be used to optimize treatment algorithms. METHODS Potential outcomes worthy of prediction in UC were determined by surveying 202 experts in pediatric UC. A systematic review of the literature, with selected meta-analysis, was performed to identify studies that investigated predictors for these outcomes. Multiple national and international meetings were held to reach consensus on evidence-based statements. RESULTS Consensus was reached on 31 statements regarding predictors of colectomy, acute severe colitis (ASC), chronically active pediatric UC, cancer and mortality. At diagnosis, disease extent (6 studies, N = 627; P = .035), Pediatric Ulcerative Colitis Activity Index score (4 studies, n = 318; P < .001), hemoglobin, hematocrit, and albumin may predict colectomy. In addition, family history of UC (2 studies, n = 557; P = .0004), extraintestinal manifestations (4 studies, n = 526; P = .048), and disease extension over time may predict colectomy, whereas primary sclerosing cholangitis (PSC) may be protective. Acute severe colitis may be predicted by disease severity at onset and hypoalbuminemia. Higher Pediatric Ulcerative Colitis Activity Index score and C-reactive protein on days 3 and 5 of hospital admission predict failure of intravenous steroids. Risk factors for malignancy included concomitant diagnosis of primary sclerosing cholangitis, longstanding colitis (>10 years), male sex, and younger age at diagnosis. CONCLUSIONS These evidence-based consensus statements offer predictions to be considered for a personalized medicine approach in treating pediatric UC.
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Affiliation(s)
- Esther Orlanski-Meyer
- Institute of Pediatric Gastroenterology, Shaare Zedek Medical Center, the Hebrew University of Jerusalem, Israel
| | - Martine Aardoom
- Erasmus Medical Center/Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Amanda Ricciuto
- Division of Gastroenterology, Hepatology and Nutrition, the Hospital for Sick Children, Toronto, Canada
| | - Dan Navon
- Institute of Pediatric Gastroenterology, Shaare Zedek Medical Center, the Hebrew University of Jerusalem, Israel
| | - Nicholas Carman
- Children's Hospital of Eastern Ontario, IBD Centre, University of Ottawa, Ottawa, Canada
| | - Marina Aloi
- Pediatric Gastroenterology Unit, Sapienza University of Rome, Umberto I Hospital, Rome, Italy
| | - Jiri Bronsky
- Department of Pediatrics, University Hospital Motol, Prague, Czech Republic
| | - Jan Däbritz
- University Medical Center Rostock, Department of Pediatrics, Rostock, Germany; Queen Mary University of London, The Barts and the London School of Medicine and Dentistry, Blizard Institute, Center for Immunobiology, London, United Kingdom
| | - Marla Dubinsky
- Pediatric Gastroenterology and Nutrition, Mount Sinai Kravis Children's Hospital; Susan and Leonard Feinstein IBD Clinical Center, Icahn School of Medicine, Mount Sinai, New York
| | - Séamus Hussey
- National Children's Research Centre, Royal College of Surgeons of Ireland and University College Dublin, Dublin, Ireland
| | | | - Javier Martin De Carpi
- Department of Pediatric Gastroenterology, Hepatology and Nutrition, Hospital Sant Joan de Déu, Barcelona, Spain
| | | | - Marina Orsi
- Pediatric Gastroenterology, Hepatology and Transplant Unit, Hospital Italiano de Buenos Aires, Argentina
| | - Frank M Ruemmele
- Université Paris Descartes, Sorbonne Paris Cité; Assistance Publique-Hôpitaux de Paris, Hôpital Necker-Enfants Malades, Service de Gastroentérologie Pédiatrique; Institute IMAGINE Inserm U1163, Paris, France
| | - Richard K Russell
- Department of Paediatric Gastroenterology, Royal Hospital for Sick Children, Edinburgh, Scotland, United Kingdom
| | - Gabor Veres
- Pediatric Institute-Clinic, University of Debrecen, Hungary
| | - Thomas D Walters
- Division of Gastroenterology, Hepatology and Nutrition, the Hospital for Sick Children, Toronto, Canada
| | - David C Wilson
- Child Life and Health, University of Edinburgh, Paediatric Gastroenterology and Nutrition, Royal Hospital for Sick Children, Edinburgh, Scotland, United Kingdom
| | - Thomas Kaiser
- Department of General Pediatrics, University Hospital Münster, Germany
| | - Lissy de Ridder
- Erasmus Medical Center/Sophia Children's Hospital, Rotterdam, the Netherlands
| | - Anne Griffiths
- Division of Gastroenterology, Hepatology and Nutrition, the Hospital for Sick Children, Toronto, Canada
| | - Dan Turner
- Institute of Pediatric Gastroenterology, Shaare Zedek Medical Center, the Hebrew University of Jerusalem, Israel.
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Abdominal Pain After Pediatric Inflammatory Bowel Disease Diagnosis: Results From the ImproveCareNow Network. J Pediatr Gastroenterol Nutr 2020; 71:749-754. [PMID: 32910089 DOI: 10.1097/mpg.0000000000002933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
OBJECTIVES Although abdominal pain is a hallmark symptom of pediatric inflammatory bowel disease (IBD), limited research has examined pain during the first year after diagnosis. The purpose of the present study is to examine prevalence, predictors, and impact of abdominal pain during the 12 months after pediatric IBD diagnosis using data from the ImproveCareNow (ICN) Network. PATIENTS AND METHODS Participants consisted of 13,875 youth (age 8-18 years, 44% female, 81% Caucasian) with IBD (65% Crohn's disease; 27% ulcerative colitis, 8% indeterminate colitis) enrolled in the ICN Network with data from clinic visits during the first year after diagnosis (1-22 visits; mean = 3.7). Multivariable mixed effects logistic regression models were conducted to analyze the presence versus the absence of abdominal pain, activity limitations, and decrements in well-being. RESULTS The percentage of youth reporting abdominal pain decreased significantly during the first year after diagnosis and yet a sizeable group reported continued pain at 12 months (55.9% at diagnosis; 34.0% at 12 months). Multivariable analyses revealed that greater time since diagnosis (odds ratio [OR] = 0.98, P < 0.001), higher disease severity (OR = 11.84, P < 0.001), presence of psychosocial risk factors (OR = 2.33, P = 0.036), and female sex (OR = 1.90, P < 0.010) were significant correlates of continuing abdominal pain. Abdominal pain was significantly associated with decrements in well-being (OR = 5.11, P < 0.001) as well as limitations in activity (OR = 9.31, P < 0.001), over and above the influence of disease severity. CONCLUSIONS Abdominal pain is prevalent and impactful, even when controlling for disease activity, during the first year after pediatric IBD diagnosis. Results from the present study can inform screening and tailored pain management intervention efforts in pediatric IBD.
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Claytor JD, Kochar B, Kappelman MD, Long MD. Body Image Dissatisfaction among Pediatric Patients with Inflammatory Bowel Disease. J Pediatr 2020; 223:68-72.e1. [PMID: 32711754 DOI: 10.1016/j.jpeds.2020.04.045] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Revised: 04/12/2020] [Accepted: 04/16/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES To determine risk factors for body image dissatisfaction among pediatric patients with inflammatory bowel disease (IBD). STUDY DESIGN We performed a cross-sectional study of children aged 9-18 years in the IBD Partners Kids & Teens cohort. Participants completed surveys including demographics, disease characteristics and activity indices, and psychosocial outcomes measured by IMPACT-III questionnaires. We defined body image dissatisfaction if participants answered "I look awful" or "I look bad." Bivariate analyses assessed associations between body image dissatisfaction and demographic, disease-related and psychosocial factors; logistic regression models evaluated associations between risk factors and body image dissatisfaction. RESULTS IMPACT-III was completed by 664 patients, with 74 (11.1%) reporting body image dissatisfaction. Patients with body image dissatisfaction were more likely to be female (P < .01), older (median age 15 vs 13 years, P < .01), and diagnosed with IBD at an older age (12 vs 10 years, P < .01). Those with body image dissatisfaction had greater body mass index percentile (P = .02), more active disease (P < .01), more current steroid use (P < .01), and more depression and anxiety (P < .01). Female sex (OR 2.31; 95% CI 1.22-4.39), depression (OR 4.73; 95% CI 2.41-9.26), and anxiety (OR 5.42; 95% CI 2.48-11.80) were independently associated with body image dissatisfaction. CONCLUSIONS In this cohort, risk factors for body image dissatisfaction include female sex, older age at diagnosis, active disease, current steroid use, greater body mass index, and comorbid mood disorder. Interventions targeting modifiable risk factors for body image dissatisfaction may improve quality of life in pediatric patients with body image dissatisfaction.
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Affiliation(s)
- Jennifer D Claytor
- Department of Internal Medicine, University of California, San Francisco, San Francisco, CA.
| | - Bharati Kochar
- Division of Gastroenterology and Hepatology, Massachusetts General Hospital, Boston, MA
| | - Michael D Kappelman
- Center for Gastrointestinal Biology and Disease, Chapel Hill, NC; Division of Pediatric Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC
| | - Millie D Long
- Center for Gastrointestinal Biology and Disease, Chapel Hill, NC; Division of Gastroenterology and Hepatology, University of North Carolina at Chapel Hill, Chapel Hill, NC
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Huang JG, Aw MM. Pediatric Inflammatory Bowel Disease in Asia: Epidemiology and natural history. Pediatr Neonatol 2020; 61:263-271. [PMID: 32005607 DOI: 10.1016/j.pedneo.2019.12.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/30/2019] [Accepted: 12/20/2019] [Indexed: 12/12/2022] Open
Abstract
Pediatric inflammatory bowel disease (PIBD) in Asia, once considered a rare entity, has seen a sharp increase in incidence over the preceding decade. However, there is a paucity of epidemiological data on PIBD in Asia, and the true disease burden is difficult to estimate due to the lack of national disease registries, prospective databases and the fact that much of existing published data are limited to single-center experiences. This sets the stage for examining recent published data on epidemiological trends and its natural history. Hence, we reviewed the relevant published literature on PIBD in order to summarize the epidemiological data in the Asian populations and compare it with the data available from the other population including Western population. Our review demonstrates that the rapid surge in PIBD incidence across Asian centers lies in contrast to the plateauing albeit high incidence rates in larger established Western cohorts. Important epidemiological trends observed across emerging Asian literature are the higher rates of perianal involvement at disease onset amongst pediatric Crohn's disease (CD) patients, a higher proportion of early-onset disease and the over-representation of the Indian ethnicity in multi-ethnic cohorts. A number of issues currently limit a robust comparison and hence the way forward would be to advocate the recognition of PIBD as an increasingly important public health problem with the need to establish robust disease registries.
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Affiliation(s)
- James Guoxian Huang
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore.
| | - Marion M Aw
- Department of Paediatrics, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Khoo Teck Puat-National University Children's Medical Institute, National University Health System, Singapore
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Nasiri S, Kuenzig ME, Benchimol EI. Long-term outcomes of pediatric inflammatory bowel disease. Semin Pediatr Surg 2017; 26:398-404. [PMID: 29126510 DOI: 10.1053/j.sempedsurg.2017.10.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The incidence and prevalence of childhood-onset inflammatory bowel diseases (IBD), including subtypes Crohn's disease and ulcerative colitis, have risen dramatically in recent years, and have emerged globally as important pediatric chronic diseases. Therefore, health care providers are more frequently encountering very young children with IBD, a chronic and incurable condition requiring life-long therapy. These children are living long lives with IBD and therefore knowledge of long-term outcomes is increasingly important to better counsel families and determine the best course of treatment. This review summarizes the current knowledge and literature surrounding long-term outcomes of pediatric IBD, with emphasis on the following areas: need for surgery due to complicated disease behavior, risk of disease remission and recurrence, mental health and psychosocial well-being, educational outcomes, linear growth impairment, cancer risk, and mortality. In addition, we review recent research about predicting negative long-term outcomes in children with IBD.
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Affiliation(s)
- Soheila Nasiri
- Division of Gastroenterology, Hepatology and Nutrition, CHEO Inflammatory Bowel Disease Centre, Children's Hospital of Eastern Ontario, 401 Smyth Rd, Ottawa, Canada K1H 8L1
| | - Mary Ellen Kuenzig
- Division of Gastroenterology, Hepatology and Nutrition, CHEO Inflammatory Bowel Disease Centre, Children's Hospital of Eastern Ontario, 401 Smyth Rd, Ottawa, Canada K1H 8L1; Children's Hospital of Eastern Ontario (CHEO) Research Institute, Ottawa, Canada; Institute for Clinical Evaluative Sciences, Ottawa, Canada
| | - Eric I Benchimol
- Division of Gastroenterology, Hepatology and Nutrition, CHEO Inflammatory Bowel Disease Centre, Children's Hospital of Eastern Ontario, 401 Smyth Rd, Ottawa, Canada K1H 8L1; Children's Hospital of Eastern Ontario (CHEO) Research Institute, Ottawa, Canada; Institute for Clinical Evaluative Sciences, Ottawa, Canada; Department of Pediatrics and School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada.
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10
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Hirata A, Uchino M, Bando T, Hirose K, Chohno T, Sasaki H, Horio Y, Nakamura S, Hida N, Hori K, Tomita N, Takahashi Y, Takesue Y, Ikeuchi H. Long-term outcomes and sex differences after restorative proctocolectomy in pediatric patients with ulcerative colitis. J Pediatr Surg 2016; 51:454-60. [PMID: 26561247 DOI: 10.1016/j.jpedsurg.2015.10.042] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 09/01/2015] [Accepted: 10/11/2015] [Indexed: 01/18/2023]
Abstract
BACKGROUND Restorative proctocolectomy (RPC) for ulcerative colitis (UC) could result in a higher patient quality of life, avoiding frequent disease flares; however, pouch failures and pouch-related complications (PRCs) can develop. PURPOSE No cohort studies have examined pouch failure and the differences between adult and pediatric patients or the sex differences in pediatric UC. Therefore, the pouch failure rates were compared between adults and pediatric patients, and pouch failure and PRCs in pediatric UC were evaluated. METHODS UC patients who underwent RPC between January 1987 and June 2014 at Hyogo College of Medicine were included. Patient background characteristics, PRCs, and pouch failure were reviewed. RESULTS A total of 1347 adult UC patients and 90 (51 boys, 39 girls) pediatric UC patients were included in the study. The cumulative rate of pouch failure at 10years after RPC was significantly higher in pediatric UC (9.5%) than in adult UC (2.1%; p<0.01). In pediatric UC, the independent risk factors for pouch failure were pouchitis (hazard ratio (HR) 19.3) and anal fistula (HR 5.5). Although a sex difference was not seen in pouch failure, an independent risk factor for PRCs was being a girl (HR 2.5). CONCLUSIONS Pouch failure was more common in pediatric than in adult UC. PRCs after RPC were more common in girls in pediatric UC.
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Affiliation(s)
- Akihiro Hirata
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Motoi Uchino
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan.
| | - Toshihiro Bando
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Kei Hirose
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Teruhiro Chohno
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Hirofumi Sasaki
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Yuki Horio
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Shiro Nakamura
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Nobuyui Hida
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Kazutoshi Hori
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Naohiro Tomita
- Department of Lower Gastroenterological Surgery, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Yoshiko Takahashi
- Division of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Yoshio Takesue
- Division of Infection Control and Prevention, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
| | - Hiroki Ikeuchi
- Department of inflammatory Bowel Disease, Hyogo College of Medicine, Nishinomiya, Hyogo, Japan
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11
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Assessment of Sex Differences for Treatment, Procedures, Complications, and Associated Conditions Among Adolescents Hospitalized with Crohn's Disease. Inflamm Bowel Dis 2015; 21. [PMID: 26214808 PMCID: PMC4624304 DOI: 10.1097/mib.0000000000000521] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Sex differences among adults in healthcare treatment and outcomes have been reported; however, there is a paucity of literature regarding pediatric populations, particularly adolescents with Crohn's disease (CD). The objective was to identify whether sex differences exist with respect to complications, procedures, and medication usage (corticosteroids, biological agents, and total parenteral nutrition) among hospitalized adolescents with CD. METHODS Adolescents with CD (n = 5782) hospitalized between April 1, 2004, and June 30, 2012, were selected from the Pediatric Health Information System database with a 1:1 ratio of males to females by hospital. Frequency of disease complications, associated conditions, procedures performed, and medication usage were analyzed with nonparametric statistical tests for the existence of sex differences. RESULTS Five thousand seven hundred eighty-two patients were included with a median age of 15 years. Females were slightly more likely to have anemia (29% versus 25%, P = 0.012), infection (12% versus 8%, P = 0.001), and mood disorder (9% versus 6%, P < 0.001), whereas males had more maturational delays (3% versus 1%, P = 0.004) and malnutrition (18% versus 14%, P = 0.027). Among procedures, only one category demonstrated a sex difference: females had more blood product transfusions (9% versus 6%, P < 0.001). Female rates for corticosteroids (62%), biological agents (16%), and total parenteral nutritionTPN (18%) were not statistically different from those for males (62%, 15%, and 20%, respectively). There were no differences in length of stay by sex. CONCLUSIONS This cross-sectional study of an administrative database identified few sex differences among adolescents with CD. The effect sizes were universally small and generally consistent with known sex differences unrelated to IBD.
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Abstract
OBJECTIVES Children and adolescents diagnosed as having Crohn disease (CD), a type of inflammatory bowel disease (IBD), have increased vulnerability for anxiety symptoms that may be related to disease-related processes. The aims of this article are 3-fold: to report the proportion of pediatric patients with CD whose self-reported anxiety symptoms are indicative of distress, to describe the constellation of anxiety symptoms, and to examine the relation between anxiety and disease symptoms. METHODS Retrospective medical chart review was performed for 93 youths with CD (ages 9-18 years) who had completed the Screen for Child Anxiety Related Disorders during their gastroenterology visit. Medical records were reviewed for demographic and disease characteristics. the Harvey-Bradshaw Index (HBI) was used as a measure of CD activity. RESULTS Thirty percent of the youths reported experiencing elevated anxiety symptoms (Screen for Child Anxiety Related Disorder score >20), and 50% had scored above the cutoff in 1 or more anxiety domains, with school anxiety, general anxiety, and separation anxiety symptoms reported most frequently. Youth rated with moderate/severe disease activity on the HBI (n = 4) self-reported more anxiety symptoms compared with youth with inactive disease (n = 78, P = 0.03). Greater school anxiety was significantly associated with decreased well-being (P = 0.003), more abdominal pain (P < 0.001), and the number of loose stools (P = 0.01). Having extraintestinal symptoms was significantly associated with higher somatic/panic anxiety (P = 0.01). CONCLUSIONS Implementing a brief anxiety screen in tertiary pediatric settings may be one approach to identify young patients with CD in distress. Health care providers should consider periodic assessment of school anxiety among youth with CD.
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13
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Abstract
Crohn's disease in childhood causes linear growth retardation, which has a substantial effect on management of this disease. By contrast, growth is rarely a problem in children presenting with ulcerative colitis. Depending on how growth failure is defined, approximately one-third of children with Crohn's disease have growth retardation at diagnosis. Although corticosteroids can suppress growth, decreased height at diagnosis demonstrates that this finding is a consequence of the disease and not merely an adverse effect of treatment. Both inflammation and undernutrition contribute to decreased height velocity. Increased cytokine production acts both on the hepatic expression of insulin-like growth factor 1 (IGF-1) and at chondrocytes of the growth plates of long bones. Growth hormone insensitivity caused by deranged immune function is a major mechanism in growth retardation. Resolution of inflammation is the cornerstone of treatment, but current studies on growth hormone and IGF-1 might yield therapies for those children whose inflammation is refractory to treatment.
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Affiliation(s)
- Ian R Sanderson
- Centre for Digestive Diseases, Blizard Institute, Barts and The London School of Medicine and Dentistry, Queen Mary University of London. 4 Newark Street, London E1 2AT, UK
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14
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Herzog D, Buehr P, Koller R, Rueger V, Heyland K, Nydegger A, Spalinger J, Schibli S, Braegger CP. Gender differences in paediatric patients of the swiss inflammatory bowel disease cohort study. Pediatr Gastroenterol Hepatol Nutr 2014; 17:147-54. [PMID: 25349830 PMCID: PMC4209319 DOI: 10.5223/pghn.2014.17.3.147] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 07/24/2014] [Accepted: 08/19/2014] [Indexed: 01/04/2023] Open
Abstract
PURPOSE Gender differences in paediatric patients with inflammatory bowel disease (IBD) are frequently reported as a secondary outcome and the results are divergent. To assess gender differences by analysing data collected within the Swiss IBD cohort study database since 2008, related to children with IBD, using the Montreal classification for a systematic approach. METHODS Data on gender, age, anthropometrics, disease location at diagnosis, disease behaviour, and therapy of 196 patients, 105 with Crohn's disease (CD) and 91 with ulcerative or indeterminate colitis (UC/IC) were retrieved and analysed. RESULTS THE CRUDE GENDER RATIO (MALE : female) of patients with CD diagnosed at <10 years of age was 2.57, the adjusted ratio was 2.42, and in patients with UC/IC it was 0.68 and 0.64 respectively. The non-adjusted gender ratio of patients diagnosed at ≥10 years was 1.58 for CD and 0.88 for UC/IC. Boys with UC/IC diagnosed <10 years of age had a longer diagnostic delay, and in girls diagnosed with UC/IC >10 years a more important use of azathioprine was observed. No other gender difference was found after analysis of age, disease location and behaviour at diagnosis, duration of disease, familial occurrence of IBD, prevalence of extra-intestinal manifestations, complications, and requirement for surgery. CONCLUSION CD in children <10 years affects predominantly boys with a sex ratio of 2.57; the impact of sex-hormones on the development of CD in pre-pubertal male patients should be investigated.
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Affiliation(s)
- Denise Herzog
- Division of Gastroenterology, Department of Paediatrics, Cantons Hospital of Fribourg, Fribourg, Switzerland
| | - Patrick Buehr
- Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland
| | - Rebekka Koller
- Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland
| | - Vanessa Rueger
- Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland
| | - Klaas Heyland
- Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland
| | - Andreas Nydegger
- Division of Gastroenterology, University Children's Hospital of Lausanne, Lausanne, Switzerland
| | - Johannes Spalinger
- Division of Gastroenterology, Children's Hospital of Lucerne, Lucerne, Switzerland
| | - Susanne Schibli
- Division of Gastroenterology, University Children's Hospital of Bern, Bern, Switzerland
| | - Christian P Braegger
- Division of Gastroenterology and Nutrition, University Children's Hospital Zurich, Zurich, Switzerland. ; Children's Research Center, University Children's Hospital Zurich, Zurich, Switzerland
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15
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Santos CHMD. Analysis of the factors related to anti-TNF alpha response in the treatment of Crohn's Disease. JOURNAL OF COLOPROCTOLOGY 2014. [DOI: 10.1016/j.jcol.2013.12.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
AbstractCrohn's disease (CD) presents a great challenge regarding treatment, considering that the best drugs available have very limited effectiveness.
Objective To analyze the characteristics between groups of patients with Crohn's disease who had response versus had not/lost response to treatment with anti-TNF.
Method Retrospective study of patients with CD treated with IFX or ADA.
Results We studied 72 patients with mean age of 35 years; 45 of them were treated with infliximab and 27 with adalimumab; 90% of women were respondents, compared to 10% who were not respondents/lost response, and 60% of men were respondents versus 40% who were not respondents/lost response; there was no difference between IFX and ADA with respect to response; 48 patients were < 40 and 24 > 40 years old. Of those who had < 40 years, 37 were respondents, compared to 11 who were not respondents/lost response. Of those with > 40 years, 16 were respondents versus 8 who were not respondents/lost response; patients under 2 years of diagnosis had a better response than those with two to five years of symptoms, and these latter exhibited a better response than those with more than five years of diagnosis.
Conclusion The observed characteristics of response to treatment of CD with anti-TNF were: association to azathioprine, female gender, age < 40 years and less than two years of diagnosis.
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16
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Tso VK, Sydora BC, Foshaug RR, Churchill TA, Doyle J, Slupsky CM, Fedorak RN. Metabolomic profiles are gender, disease and time specific in the interleukin-10 gene-deficient mouse model of inflammatory bowel disease. PLoS One 2013; 8:e67654. [PMID: 23874435 PMCID: PMC3706546 DOI: 10.1371/journal.pone.0067654] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2013] [Accepted: 05/21/2013] [Indexed: 12/29/2022] Open
Abstract
Metabolomic profiling can be used to study disease-induced changes in inflammatory bowel diseases (IBD). The aim of this study was to investigate the difference in the metabolomic profile of males and females as they developed IBD. Using the IL-10 gene-deficient mouse model of IBD and wild-type mice, urine at age 4, 6, 8, 12, 16, and 20 weeks was collected and analyzed by nuclear magnetic resonance (NMR) spectroscopy. Multivariate data analysis was employed to assess differences in metabolomic profiles that occurred as a consequence of IBD development and severity (at week 20). These changes were contrasted to those that occurred as a consequence of gender. Our results demonstrate that both IL-10 gene-deficient and wild-type mice exhibit gender-related changes in urinary metabolomic profile over time. Some male-female separating metabolites are common to both IL-10 gene-deficient and control wild-type mice and, therefore, appear to be related predominantly to gender maturation. In addition, we were able to identify gender-separating metabolites that are unique for IL-10 gene-deficient and wild-type mice and, therefore, may be indicative of a gender-specific involvement in the development and severity of the intestinal inflammation. The comparison of the gender-separating metabolomic profile from IL-10 gene-deficient mice and wild-type mice during the development of IBD allowed us to identify changes in profile patterns that appear to be imperative in the development of intestinal inflammation, but yet central to gender-related differences in IBD development. The knowledge of metabolomic profile differences by gender and by disease severity has potential clinical implications in the design of both biomarkers of disease as well as the development of optimal therapies.
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Affiliation(s)
- Victor K. Tso
- Centre of Excellence for Gastrointestinal Inflammation and Immunity Research, Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Beate C. Sydora
- Centre of Excellence for Gastrointestinal Inflammation and Immunity Research, Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | - Rae R. Foshaug
- Centre of Excellence for Gastrointestinal Inflammation and Immunity Research, Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
| | | | - Jason Doyle
- Department of Laboratory Medicine and Pathology, Vernon Jubilee Hospital, Vernon, British Columbia, Canada
| | - Carolyn M. Slupsky
- Department of Nutrition, University of California Davis, Davis, California, United States of America
| | - Richard N. Fedorak
- Centre of Excellence for Gastrointestinal Inflammation and Immunity Research, Division of Gastroenterology, Department of Medicine, University of Alberta, Edmonton, Alberta, Canada
- * E-mail:
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