Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Colitis”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 163 records · Page 9Linked to original sources
PubMed2019

Dietary iron variably modulates assembly of the intestinal microbiota in colitis-resistant and colitis-susceptible mice.

Iron deficiency, a common comorbidity of gastrointestinal inflammatory disorders such as inflammatory bowel diseases (IBD), is often treated with oral iron supplementation. However, the safety of oral iron supplementation remains controversial because of its association with exacerbated disease activity in a subset of IBD patients. Because iron modulates bacterial growth and function, one possible mechanism by which iron may exacerbate inflammation in susceptible hosts is by modulating the intestinal microbiota. We, therefore, investigated the impact of dietary iron on the intestinal microbiota, utilizing the conventionalization of germ-free mice as a model of a microbial community in compositional flux to recapitulate the instability of the IBD-associated intestinal microbiota. Our findings demonstrate that altering intestinal iron availability during community assembly modulated the microbiota in non-inflamed wild type (WT) and colitis-susceptible interleukin-10-deficient (Il10-/-) mice. Depletion of luminal iron availability promoted luminal compositional changes associated with dysbiotic states irrespective of host genotype, including an expansion of Enterobacteriaceae such as Escherichia coli. Mechanistic in vitro growth competitions confirmed that high-affinity iron acquisition systems in E. coli enhance its abundance over other bacteria in iron-restricted conditions, thereby enabling pathobiont iron scavenging during dietary iron restriction. In contrast, distinct luminal community assembly was observed with dietary iron supplementation in WT versus Il10-/- mice, suggesting that the effects of increased iron on the microbiota differ with host inflammation status. Taken together, shifts in dietary iron intake during community assembly modulate the ecological structure of the intestinal microbiota and is dependent on host genotype and inflammation status.

Animals↗
PubMed1994

Mucosal biopsy diagnosis of colitis: acute self-limited colitis and idiopathic inflammatory bowel disease.

BACKGROUND/AIMS: Rectal biopsy specimen changes distinguish acute self-limited colitis (ASLC) from idiopathic inflammatory bowel disease (IBD). This study aimed to determine whether these histological criteria are also valid for acute-onset IBD. METHODS: Blind analysis of colorectal biopsy specimens from 52 patients with ASLC, 51 patients with acute-onset (< 3 months) IBD, and 30 patients with chronic IBD was performed. RESULTS: Histological features of ASLC are normal crypt architecture and acute lamina propria inflammation, but mixed acute and chronic inflammation can be found. Histological features of IBD are diffusely abnormal crypt architecture, crypt atrophy, mixed lamina propria inflammation, basal plasmacytosis, basal lymphoid aggregates, basal lymphoid hyperplasia, isolated giant cells, epithelioid granulomas, goblet cell mucus depletion, and reactive epithelial hyperplasia. Changes of chronic IBD were present in biopsy specimens as early as 7 days after the onset of symptoms. CONCLUSIONS: Rectal biopsy specimens are useful in distinguishing ASLC from acute-onset IBD even if the biopsy specimens are not obtained during the first 4 days of the illness. There were no significant differences in histology between acute-onset and chronic IBD.

Acute Disease↗
PubMed1982

Estrogen- and progesterone-associated colitis: a disorder with clinical and endoscopic features mimicking Crohn's colitis.

Five women presented with episodes of abdominal pain and bloody diarrhea. Their colonic endoscopic features included (1) rectal sparing, (2) segmental involvement of the colon, and (3) discrete ulcers with normal adjacent mucosa that mimicked Crohn's colitis. All patients were taking estrogen or progesterone or both, and their symptoms and endoscopic findings resolved with cessation of therapy.

Adult↗
PubMed1989

Probable Crohn's colitis mimicking ischaemic colitis in a young adult.

The features on barium enema of ischaemic colitis is characteristic and the radiological sign of "thumb printing" thought to be almost pathognomonic of the condition. We report a case of inflammatory bowel disease, probably Crohn's disease mimicking these radiological features. This has not to our knowledge been previously documented.

Adult↗
PubMed1983

Arthritis and collagenous colitis. Report of a case with concomitant chronic polyarthritis and collagenous colitis.

A 26-year-old woman simultaneously developed chronic seronegative non-destructive polyarthritis and chronic watery diarrhoea. Biopsies from the colorectal mucosa showed a thickened subepithelial collagen layer consistent with collagenous colitis. The combination of these conditions has not, to our knowledge, been described previously. On the basis of only one patient it is too early to determine whether or not this case represents a new type of enteropathic arthritis.

Adult↗
PubMed1999

[Complications of extraintestinal endocrine disease associated with ulcerative colitis--association of ulcerative colitis and autoimmune thyroid disease].

We experienced a rare case of Basedow's disease followed by ulcerative colitis (UC). The association of UC and autoimmune thyroid disease was reviewed and discussed. A high frequency of endocrine autoimmunity, especially autoimmune thyroid disease, was reported in patients with UC. But prevalence of autoimmune thyroid disease associated with UC varies widely in different studies. Some authors described that it was impossible to say that the observed numbers of UC associated with thyroid disease exceed to those to be expected in a random sample of the general populations. The hypothesis that autoimmunity is important in the pathogenesis of UC and thyroid disease continues to stimulate interest. But the evidence for autoimmunity acting in these diseases is not quite as convinced. Further investigation is warranted to clarify the exact relationships between UC and thyroid disease.

Adult↗
PubMed1987

Fulminant colitis complicating antibiotic-associated pseudomembranous colitis: case report and review of the clinical manifestations and treatment.

A middle-aged man presented with diarrhea, fever, and leukocytosis 7 days after discontinuation of clindamycin therapy for a urinary tract infection. Proctosigmoidoscopy showed adherent, raised plaques studding the bowel wall consistent with antibiotic-associated pseudomembranous colitis. Vancomycin therapy was begun, but progressive abdominal distension, nausea, vomiting, and loss of bowel sounds occurred. Serial abdominal radiographs demonstrated colonic wall edema without dilatation. Subtotal colectomy was performed and resulted in complete resolution of symptoms.

Clindamycin↗
PubMed1993

[Toxic megacolon in pseudomembranous colitis. Complicated course of antibiotic-induced Clostridium difficile colitis].

We report on a patient with antibiotic-induced pseudomembranous colitis aggravated by toxic megacolon. Colonoscopy not only rapidly permits the diagnosis to be established, but the relief of pressure achieved simultaneously also has a therapeutic effect. If treatment comprising parenteral fluid and electrolyte replacement in combination with oral vancomycin fails to effect an improvement, surgery becomes necessary. Current recommendations for treatment are discussed on the basis of a review of the literature. However, a major preventive measure remains the rational use of antibiotics.

Adolescent↗