scholarly journals Vasoactive Intestinal Polypeptide (VIP) in the Intestinal Mucosal Nerve Fibers in Dogs with Inflammatory Bowel Disease

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1759
Author(s):  
Andrzej Rychlik ◽  
Sławomir Gonkowski ◽  
Jarosław Całka ◽  
Krystyna Makowska
Keyword(s):  
Inflammatory Bowel Disease ◽  
Nervous System ◽  
Vasoactive Intestinal Polypeptide ◽  
Bowel Disease ◽  
Disease Process ◽  
Nerve Fibers ◽  
Inflammatory Bowel ◽  
Healthy Dogs ◽  
Adaptive Reactions ◽  
Intestinal Polypeptide

Canine inflammatory bowel disease (IBD) is a group of enteropathies with nonspecific chronic symptoms and poorly understood etiology. Many aspects connected with IBD are not understood. One of them is the participation of the intestinal nervous system in the development of pathological processes. Thus, this study aimed to demonstrate changes in the density of intramucosal nerve fibers containing vasoactive intestinal polypeptide (VIP)—one of the most important intestinal nervous factors caused by the various stages of IBD development. Mucosal biopsy specimens collected from the duodenum, jejunum and descending colon of healthy dogs and dogs with varied severity of IBD were included in the experiment. The density of VIP-like immunoreactive (VIP-LI) nerves was determined by a single immunofluorescence technique and a semi-quantitative method consisting in VIP-LI fiber counts in the field of view (0.1 mm2). The obtained results indicate that IBD induces changes in the density of mucosal VIP-LI nerve fibers in the canine gastrointestinal tract. The initial decrease is followed by an increase in VIP-like immunoreactivity in successive stages of the disease. These observations show that VIP is a neuronal factor that participates in the pathological processes connected with canine IBD. The observed changes probably result from the neuroprotective and/or adaptive properties of VIP. Protective and adaptive reactions induced by inflammation aim to protect the GI tract against damage by proinflammatory factors and ensure the homeostasis in the enteric nervous system (ENS) under the conditions changed by the disease process.

scholarly journals Galanin - Immunoreactive Nerve Fibers in the Mucosal Layer of the Canine Gastrointestinal Tract During Inflammatory Bowel Disease

2015 ◽  
Vol 59 (1) ◽  
pp. 143-148 ◽  
Author(s):  
Andrzej Rychlik ◽  
Sławomir Gonkowski ◽  
Marcin Nowicki ◽  
Jarosław Całka ◽  
Marta Szweda
Keyword(s):  
Inflammatory Bowel Disease ◽  
Bowel Disease ◽  
Nerve Fibers ◽  
Immunofluorescence Method ◽  
Fiber Density ◽  
Biopsy Specimens ◽  
Mucosal Layer ◽  
Inflammatory Bowel ◽  
Healthy Dogs ◽  
Severity Of The Disease

Abstract The effect of inflammatory bowel disease (IBD) on the density of galanin - immunoreactive (GAL-IR) nerve fibers was determined in the mucosa of canine duodenum, jejunum, and descending colon. Fiber density was evaluated by a single immunofluorescence method in biopsy specimens obtained from healthy dogs and patients with variable severity of the disease. The density of GAL-IR nerve fibers was determined by the semi-quantitative method by counting fibers in the field of view (0.l mm2). Fiber density was higher in dogs with moderate and severe IBD than in healthy animals. The results of the study suggest that GAL present in intestinal nerve fibers could play a role in the pathogenesis and development of canine IBD.

scholarly journals Changes in the expression of substance P in nerve fibres of the colonic mucosa in dogs suffering from inflammatory bowel disease

2020 ◽  
Vol 68 (2) ◽  
pp. 154-159
Author(s):  
Andrzej Rychlik ◽  
Slawomir Gonkowski ◽  
Krystyna Makowska ◽  
Ewa Kaczmar ◽  
Jaroslaw Calka
Keyword(s):  
Inflammatory Bowel Disease ◽  
Substance P ◽  
Bowel Disease ◽  
Disease Process ◽  
Nerve Fibres ◽  
Mucosal Layer ◽  
Inflammatory Bowel ◽  
Healthy Dogs ◽  
Pain Stimuli

AbstractDue to its difficult diagnosis and complicated treatment, inflammatory bowel disease (IBD) in dogs is a challenge for the veterinarian. Several aspects connected with pathological changes during IBD still remain unknown. Since one of these aspects is the participation of intestinal innervation in the evolution of the disease, the aim of this study was to demonstrate changes in the number and distribution of intramucosal colonic nerve fibres immunoreactive to substance P (SP) arising as the disease progresses. SP is one of the most important neuronal factors in intestinal innervation which, among other tasks, takes part in the conduction of pain stimuli. Using routine immunofluorescence technique, the density of nerve fibres containing SP was evaluated within mucosal biopsy specimens collected from the descending colon of healthy dogs and animals suffering from IBD of varying severity. The results of the study indicate that during severe IBD the number of nerve fibres containing SP located in the colonic mucosal layer increases in comparison to control animals. The number of SP-positive intramucosal nerves amounted to 10.99 ± 2.11 nerves per observation field in healthy dogs, 14.62 ± 2.86 in dogs with mild IBD, 14.80 ± 0.91 in dogs with moderate IBD and 19.03 ± 6.11 in animals with severe IBD. The observed changes were directly proportional to the intensity of the disease process. These observations may suggest a role of this neuronal substance in pathological processes occurring during IBD. Although the exact mechanism of the observed changes has not been completely explained, the results obtained in this investigation may contribute to improving the diagnosis and treatment of this disease, as well as the staging of canine IBD in veterinary practice.

Chronic Nonspecific Inflammatory Bowel Disease of the Cecum and Proximal Colon in Children With Grossly Normal-Appearing Colonic Mucosa: Diagnosis by Colonoscopic Biopsies

PEDIATRICS ◽  
1987 ◽  
Vol 80 (2) ◽  
pp. 255-261
Author(s):  
Melvin B. Heyman ◽  
Jay A. Perman ◽  
Linda D. Ferrell ◽  
M. Michael Thaler
Keyword(s):  
Inflammatory Bowel Disease ◽  
Abdominal Pain ◽  
Bowel Disease ◽  
Colonic Mucosa ◽  
Disease Process ◽  
Proximal Colon ◽  
Chronic Abdominal Pain ◽  
Medical Attention ◽  
Inflammatory Bowel ◽  
Inflammatory Changes

The diagnosis of inflammatory bowel disease rests on radiologic, endoscopic, and histologic creteria. Five patients, 2 to 17 years of age, sought medical attention because of chronic abdominal pain, diarrhea, and heme-positive stools. Rectal biopsies, visual inspection of colonic mucosa through the colonoscope, and contrast radiographs of the large and small intestine yielded nonspecific results. Serial endoscopic biopsies demonstrated a gradient of inflammatory changes diminishing in severity distally from the ileocecal valve and cecum. The disease process was most evident in specimens from the cecum, whereas biopsies distal to the transverse colon had a normal histologic appearance in all five patients. Biopsies from the proximal colon may provide evidence of inflammatory bowel disease not detectable using standard techniques. The combination of chronic abdominal pain, diarrhea, and heme-positive stools associated with inflammatory changes in biopsy specimens obtained from the proximal colon, but normal findings on radiologic, colonoscopic, and rectal biopsy examinations, may represent an early stage in the evolution of chronic nonspecific inflammatory bowel disease, including ulcerative colitis or regional enteritis (Crohn disease).

Diffuse Filiform Polyposis With Unique Histology Mimicking Familial Adenomatous Polyposis in a Patient Without Inflammatory Bowel Disease

2007 ◽  
Vol 131 (12) ◽  
pp. 1821-1824
Author(s):  
Gerard J. Oakley III ◽  
Wolfgang H. Schraut ◽  
Robert Peel ◽  
Alyssa Krasinskas
Keyword(s):  
Inflammatory Bowel Disease ◽  
Small Bowel ◽  
Familial Adenomatous Polyposis ◽  
Bowel Disease ◽  
Nerve Fibers ◽  
Normal Colonic Mucosa ◽  
Adenomatous Polyposis ◽  
Inflammatory Bowel ◽  
Filiform Polyposis ◽  
Vascular Hamartoma

Abstract Filiform polyposis is an uncommon entity that is most often encountered in the colon of patients with a history of inflammatory bowel disease (IBD). Filiform polyposis is characterized by a large number of “wormlike” polyps lined by histologically normal colonic mucosa. These polyps can mimic adenomatous polyps. Only rare cases without a history or evidence of IBD have been reported. Neuromuscular and vascular hamartoma of the small bowel is a rare, focal disorder characterized by disorganized smooth muscle fascicles throughout the submucosa accompanied by fibrosis, nerve fibers, ganglion cells, and vessels. To our knowledge, there is only one report of this lesion in the large bowel (cecum), where it presented as a mass. Here we report the case of a 50-year-old man with no known history or symptoms of IBD presenting with filiform polyposis involving the entire colon, clinically mimicking familial adenomatous polyposis, and showing histologic features similar to neuromuscular and vascular hamartoma of the small bowel.

Inflammatory Bowel Disease and Risk of Birth Defects in Offspring

2020 ◽  
Vol 14 (5) ◽  
pp. 588-594
Author(s):  
Nathalie Auger ◽  
Justin Côté-Daigneault ◽  
Marianne Bilodeau-Bertrand ◽  
Laura Arbour
Keyword(s):  
Ulcerative Colitis ◽  
Inflammatory Bowel Disease ◽  
Central Nervous System ◽  
Nervous System ◽  
Crohn’S Disease ◽  
Crohn's Disease ◽  
Birth Defects ◽  
Bowel Disease ◽  
Inflammatory Bowel ◽  
Central Nervous System Defects

Abstract Background and Aims The relationship between inflammatory bowel disease in pregnancy and birth defects is not understood. We evaluated whether Crohn’s disease and ulcerative colitis in pregnant women were associated with the risk of birth defects in the offspring. Methods We undertook a retrospective cohort study of 2 184 888 pregnancies in Quebec, Canada, between 1989 and 2016. We calculated risk ratios [RR] and 95% confidence intervals [CI] for the association between inflammatory bowel disease and the risk of birth defects, using generalised estimating equations adjusted for maternal characteristics. We assessed associations in the period before 2000, when immunosuppressive biologic therapy and folic acid food fortification were not yet available, compared with the period after 2000 when these interventions were more widespread. Results This study included 13 099 women with Crohn’s disease and 7798 with ulcerative colitis. Crohn’s disease was associated with 1.90 times [95% CI 1.10–3.28] the risk of abdominal wall defects [gastroschisis, omphalocoele, and diaphragmatic hernia] and ulcerative colitis was associated with 1.53 times [95% CI 1.02–2.30] the risk of central nervous system defects. The association of Crohn’s disease with abdominal wall defects was stronger before 2000 [RR 3.62, 95% CI 1.71–7.67] than after 2000 [RR 1.23, 95% CI 0.55–2.75]. Ulcerative colitis was associated with central nervous system defects regardless of time period. Conclusions These findings suggest that inflammatory bowel disease is associated with the risk of abdominal wall and central nervous system defects, and that introduction of immunobiologic medications is unlikely to be associated with added risk. Podcast This article has an associated podcast which can be accessed at https://academic.oup.com/ecco-jcc/pages/podcast

Serum IgG4 Subclass Deficiency Defines a Distinct, Commonly Encountered, Severe Inflammatory Bowel Disease Subtype

2020 ◽  
Author(s):  
Filippos Koutroumpakis ◽  
Anna Evans Phillips ◽  
Dhiraj Yadav ◽  
Jorge D Machicado ◽  
Maaz Ahsan ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
Disease Severity ◽  
Bowel Disease ◽  
Disease Process ◽  
Serum Igg4 ◽  
Tertiary Center ◽  
Inflammatory Bowel ◽  
Subclass Deficiency ◽  
Igg4 Deficiency

Abstract Background Immunoglobulin G subclass 4 (IgG4) is hypothesized to play an immunomodulatory role, downregulating humoral immune responses. The role of this anti-inflammatory molecule in inflammatory bowel disease (IBD) has not been fully characterized. We sought to define alterations in serum IgG4 in patients with IBD and their association with multiyear disease severity. Methods We analyzed metadata derived from curated electronic health records from consented patients with IBD prospectively followed at a tertiary center over a 10-year time period. Patients with IBD with IgG4 serum levels available formed the study population. Demographics and multiyear clinical data were collected and analyzed. We stratified patients with IBD with low, normal, or high serum IgG4 levels. Results We found IgG4 characterized in 1193 patients with IBD and low IgG4 levels in 233 patients (20%) and elevated IgG4 levels in 61 patients (5%). An IgG4 deficiency did not significantly correlate with other antibody deficiencies. In a multiple Poisson regression analysis, low IgG4 was associated with more years on biologic agents (P = 0.002) and steroids (P = 0.049) and more hospital admissions (P < 0.001), clinic visits (P = 0.010), outpatient antibiotic prescriptions (P < 0.001), and CD-related surgeries (P = 0.011) during the study period after controlling for certain confounders. Elevated IgG4 was only associated with primary sclerosing cholangitis (P = 0.011). A cohort of patients with IgG4-deficient severe IBD received intravenous Ig replacement therapy, which benefited and was continued in 10 out of 11 individuals. Conclusions An IgG4 subclass deficiency, distinct from other antibody deficiencies, occurred commonly in a referral IBD population and was associated with multiple markers of disease severity. This is the first association of IgG4 subclass deficiency with an inflammatory disease process. Further work is needed to define the mechanistic role of IgG4 deficiency in this severe IBD subgroup.

scholarly journals Application of Proteomics to Inflammatory Bowel Disease Research: Current Status and Future Perspectives

2019 ◽  
Vol 2019 ◽  
pp. 1-24 ◽  
Author(s):  
Arash Assadsangabi ◽  
Caroline A. Evans ◽  
Bernard M. Corfe ◽  
Alan Lobo
Keyword(s):  
Inflammatory Bowel Disease ◽  
Cancer Progression ◽  
Bowel Disease ◽  
Biomarker Discovery ◽  
Association Studies ◽  
Disease Process ◽  
Current Status ◽  
Genome Wide Association Studies ◽  
Susceptibility Loci ◽  
Inflammatory Bowel

Inflammatory bowel disease (IBD) is a chronic relapsing/remitting inflammatory illness of the gastrointestinal tract of unknown aetiology. Despite recent advances in decoding the pathophysiology of IBD, many questions regarding disease pathogenesis remain. Genome-wide association studies (GWAS) and knockout mouse models have significantly advanced our understanding of genetic susceptibility loci and inflammatory pathways involved in IBD pathogenesis. Despite their important contribution to a better delineation of the disease process in IBD, these genetic findings have had little clinical impact to date. This is because the presence of a given gene mutation does not automatically correspond to changes in its expression or final metabolic or structural effect(s). Furthermore, the existence of these gene susceptibility loci in the normal population suggests other driving prerequisites for the disease manifestation. Proteins can be considered the main functional units as almost all intracellular physiological functions as well as intercellular interactions are dependent on them. Proteomics provides methods for the large-scale study of the proteins encoded by the genome of an organism or a cell, to directly investigate the proteins and pathways involved. Understanding the proteome composition and alterations yields insights into IBD pathogenesis as well as identifying potential biomarkers of disease activity, mucosal healing, and cancer progression. This review describes the state of the art in the field with respect to the study of IBD and the potential for translation from biomarker discovery to clinical application.

scholarly journals Changes in Human Mucosal γδ T Cell Repertoire and Function Associated with the Disease Process in Inflammatory Bowel Disease

1997 ◽  
Vol 3 (3) ◽  
pp. 183-203 ◽  
Author(s):  
Laila D. McVay ◽  
Baiqing Li ◽  
Renée Biancaniello ◽  
Mary Anne Creighton ◽  
Dale Bachwich ◽  
...  
Keyword(s):  
Inflammatory Bowel Disease ◽  
T Cell ◽  
Bowel Disease ◽  
Disease Process ◽  
T Cell Repertoire ◽  
Γδ T Cell ◽  
Cell Repertoire ◽  
Inflammatory Bowel ◽  
And Function
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