Search results for "Colitis"

High resolution colonoscopy in live mice.

2007

Endoscopy in humans is a powerful method for physicians to examine the gut for inflammatory or neoplastic changes. In medical and immunological research, animal models of intestinal diseases are established key tools to investigate the mucosal immune system, colitis and cancer development in the gut. Moreover, such models represent valid systems for testing of novel drugs. In the past, mice had to be killed in order to analyze colitis activity and tumor development. The following protocol describes a method to perform high resolution endoscopic monitoring of live mice. Mice developing colitis or colonic tumors are anesthetized and examined with a miniendoscope. The endoscope is introduced v…

Murine Microvideo Endoscopy of the Colonic Microcirculation

2007

Natural orifice endoscopy in small animal models has been limited in the past by instrument size and optical performance. In this report, we investigate the feasibility of using a recently developed microvideo endoscopy system to evaluate the colon microcirculation. Using a murine model of acute colitis, microvideo endoscopy was useful in mapping the topography of inflammation as well as identifying relevant structures in the microcirculation. We conclude that natural orifice endoscopy is a useful method for the minimally invasive longitudinal assessment of the colonic mucosal microcirculation.

Rotavirus and non-rotavirus necrotizing enterocolitis

1991

Ultrasound in children and adolescents with inflammatory bowel disease

2014

The term Inflammatory Bowel Disease (IBD) is used to describe several idiopathic gastrointestinal disorders; among these diseases, the most commonly encountered in clinical practice are Crohn’s Disease (CD) and Ulcerative Colitis (UC). CD and UC are different both in distribution of gastrointestinal tract involvement and depth of inflammation. 25% of patients reveals IBD during childhood or adolescence. [1] No consensus exists regarding the optimal techniques and imaging modalities when evaluating IBD, especially in the paediatric age. [2] The correct imaging choice often depends on clinical presentation of patients. The most common situations are: the initial diagnosis of suspected IBD; pa…

Linezolidtherapie bei zwei Frühgeborenen mit nekrotisierender Enterokolitis und Infektion durch Vancomycin-resistente Enterokokken

2004

The use of the antibiotic Linezolid in two premature babies with necrotizing enterocolitis and infection with vancomycin-resistant enterococcus is described. Therapy with Linezolid in cause of necrotizing enterocolitis is an exception. Actually there are no proven recommendations for the use in this age group. Despite the successfully results more investigations for the use of linezolid in newborns and prematures are necessary.

Aproximación al diseño de un programa de administración de infliximab a pacientes con colitis ulcerosa basado en un modelo famacocinético

2015

Background: Infliximab, an anti-tumour necrosis factor approved for treatment of Crohn's disease and ulcerative colitis, is administered at predefined interdose-intervals. On insufficient response or loss of response, treatment can be intensified. The lack or loss of response is likely related to complex pharmacokinetics of infliximab. Aims: To explore optimal dosing strategies of infliximab in treatment-naïve patients with ulcerative colitis through predictive Monte Carlo simulations based on a validated population PK model. Methods: A population of 2,000 treatment-naïve patients was generated by Montecarlo simulation. Six dosing strategies for maintenance therapy were simulated on this po…

Immunotherapeutic approaches to inflammatory bowel diseases

2001

For a long time corticosteroids, aminosalicylic acid preparations and antibiotics have represented the principal approaches in evidence-based drug therapy for chronic inflammatory bowel diseases (IBD), e.g., Crohn's disease (CD) and ulcerative colitis (UC), and are able to suppress disease activity in most cases. However, there are cases that do not respond to conventional drug therapy or remain dependent on high doses of steroids associated with severe side effects in the long run. It is generally accepted now that IBD has an immunological basis and results from a hyperresponsive state of the intestinal immune system. Although the primary etiological defect respectively immunogenic agent s…

Shikonin reduces the tumour formation and IL-17 in a model of colorectal cancer associated to chronic colitis in C57BL/6 mice

2016

QS280. Mesoscopic Traffic Flow Theory Characterizes Microhemodynamics in Chemically-Induced Murine Colitis

2009

Neutralization of interleukin-18 reduces severity in murine colitis and intestinal IFN-gamma and TNF-alpha production.

2001

Interleukin (IL)-18, initially described as interferon (IFN)-gamma-inducing factor, is expressed in the inflamed mucosa of patients with Crohn's disease. To investigate the role of IL-18 in intestinal inflammation, the effect of neutralizing antimurine IL-18 antiserum in dextran sulfate sodium (DSS)-induced colitis in BALB/c and C57BL/6 mice was examined. During a dose response of DSS, levels of colonic IL-18 increased parallel with clinical worsening. With the use of confocal laser microscopy, the increased IL-18 was localized to the intestinal epithelial layer. Anti-IL-18 treatment resulted in a dose-dependent reduction of the severity of colitis in both BALB/c and C57BL/6 mice. Colon sho…