1,720,963 research outputs found
Epithelial Cell Proliferation of the Colonic Mucosa in Defferent Degrees of Colonic Diverticular Disease
No full textAssessment and Grading of Mucosal Inflammation in Colonic Diverticular Disease
No full textGoal: The aim of this study was to assess and grade the mucosal inflammatory infiltrate in different degrees of diverticular disease (DD) and to compare them with healthy matched controls.
Background: Mucosal inflammation in colonic DD has never been investigated. In particular, it is unknown whether inflammation may be found in every degree of DD.
Materials and Methods: Thirty consecutive patients with a new endoscopic diagnosis of DD (10 with asymptomatic diverticulosis, 10 with symptomatic uncomplicated DD, and 10 with acute uncomplicated diverticulitis) and 10 healthy controls were studied.
Results: A neutrophilic inflammatory infiltrate was found only in acute uncomplicated diverticulitis (overall score, 26). The mean lymphocytic cell density was significantly higher in symptomatic DD (median lymphocytic density, 7) and acute uncomplicated diverticulitis (median lymphocytic density, 11). Subdividing the patients according to different degrees of DD, we found higher lymphocytic cell density even in asymptomatic diverticulosis (median lymphocytic density, 6.5) than healthy controls (median lymphocytic density, 4; P<0.02).
Conclusions: We found an increased inflammatory infiltrate in DD according to the degree of the disease and higher than healthy controls. Moreover, also asymptomatic diverticulosis shows higher inflammatory cell density than controls
Tumour necrosis factor-alpha expression in segmental colitis associated with diverticulosis is related to the severity of the endoscopic damage.
No full textEndoscopic and Histological Findings in the Duodenum of Adults with Celiac Disease Before and After Changing to a Gluten-Free Diet: a 2-Year Prospective Study
No full textEpithelial cell proliferation index of the colonic mucosa in colonic diverticular disease
No full textEffect of mesalazine on epithelial cell proliferation in colonic diverticular disease
No full textBackground and aims: increased epithelial cell proliferation may be detected in diverticular disease, but antibiotics have failed in reducing it. We assess therefore the effect of mesalazine on epithelial cell proliferation in diverticular disease.
Methods: a prospective study was conducted on 20 consecutive patients with a new endoscopic diagnosis of symptomatic uncomplicated diverticular disease. The patients were treated with mesalazine 1.6 mg/day for 1 year. The Ki-67 antigen index of the whole crypt and in the upper third was separately evaluated before and after starting the treatment.
Results: cell proliferation index was higher in diverticular disease patients than healthy controls both in the whole crypt (median 6.7%, range 2–9% vs. median 1.6%, range 1–3%, p = 0.001) and in the upper third of the crypt (median 6.8%, range 2–8% vs. median 1.8%, range 1–3%, p = 0.001). Cell proliferation decreased throughout the follow-up. In the whole crypt it was 6.7% at entry and 3.8% at the end of treatment (p < 0.005), whereas it was 6.8% at entry and 2.9% at the end of treatment in the upper third of the crypt (p < 0.005).
Conclusions: we found mesalazine effective in reducing the colonic cell proliferation in long-term treatment for colonic diverticular disease
“Pattern of mucosal tumor necrosis factor-alpha expression in segmental colitis associated with diverticula suggests a truly autonomous clinical entity.”
No full text[Epub ahead of print
Mucosal expression of Basic Fibroblastic Growth Factor, Syndecan 1 and tumour necrosis factor-α in Crohn's disease in deep remission under treatment with anti-TNFα antibodies
Full text linkBackground & Aims: Both inflammation and fibrosis may be detected in Crohn's disease (CD). The molecular pattern of Basic Fibroblastic Growth Factor (bFGF) and Syndecan-1 (SD1) expression is altered in stenosing CD, but we do not know what the behaviour of this teamwork factor is in CD in deep remission under treatment with anti-TNFα antibodies. Our aim was to compare the expression of bFGF, SD1 and TNF-α in patients with CD in deep remission under treatment with Infliximab (IFX) or Adalimumab (ADA) and a control group of patients with active CD. Methods: We assessed the expression of bFGF, SD1 and TNF-α in 10 patients with active CD and in 28 patients with CD in sustained deep remission for at least 6 months. All patients underwent surveillance colonoscopy with biopsies, while receiving maintenance therapy with IFX or ADA. Analysis was conducted by real-time reverse transcriptase PCR (RT-PCR) in biopsy samples. Results: We found that bFGF, SD1 and TNF-α were significantly reduced under treatment with anti-TNFα versus controls (p=0.000). bFGF and SD1 expression were similar between IFX and ADA patients (p=0.335 and p=0.289, respectively), while TNF-α was significantly under-expressed in ADA patients (p=0.008). Conclusions: bFGF, SD1 and TNF-α are significantly reduced in CD patients in deep remission under treatment with anti-TNFα, likely as an expression of optimal control of inflammation. The significance of the TNF-α under-expression in patients under treatment with ADA with respect to those under treatment with IFX should be elucidated in further studies
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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