ADVANCED ENDOSCOPIC IMAGING FOR SURVEILLANCE FOR DYSPLASIA AND COLORECTAL CANCER IN INFLAMMATORY BOWEL DISEASE: COULD THE PATHOLOGIST BE FURTHER HELPED?

Patients with inflammatory bowel disease (IBD) have an increased risk of developing intestinal cancer. The magnitude of that increased risk as well as how best to mitigate it remain a topic of ongoing investigation in the field. It is important to quantify the risk of colorectal cancer in association with IBD. The reported risk varies widely between studies. This is partly due to the different methodologies used in the studies. Because of the limitations of surveillance strategies based on the detection of dysplasia, advanced endoscopic imaging and techniques involving the detection of alterations in mucosal antigens and genetic abnormalities are being investigated. Development of new biomarkers, predicting future occurrence of colonic neoplasia may lead to more biomarker-based surveillance. There are promising results that may lead to more efficient surveillance in IBD patients and more general acceptance of its use. A multidisciplinary approach, involving in particular endoscopists and pathologists, together with a centralized patient management, could help to optimize treatments and follow-up measures, both of which could help to reduce the IBD-associated cancer risk

MESENCHIMAL STEM CELLS IN INFLAMMATORY BOWEL DISEASES: CLINICAL EVIDENCES AND POTENTIAL INSIGHTS FOR THE CLINICIANS

Mesenchimal stem cells (MSCs) have been used experimentally and clinically in the treatment of a wide variety of pathologies MSCs can be safely transplanted in autologous and allogenic ways as they are non-immunogenic, and consequently represent a therapeutic option for refractory connective tissue diseases, fibrosing diseases like scleroderma and fistulizing colitis like in Crohn's disease (CD). The immunomodulatory properties of MSCs have already shown promise when used as therapy for otherwise medically refractory CD. Accumulating evidence suggests that the properties may also be exploited of several other conditions. The currently available experimental and clinical data indicate that, similar to previously obtained data in the setting of HSCT, MSC treatment for IBD is feasible and safe. aim of this review is to analyze the pathophysiological insights for the use of MSCs in inflammatory bowel diseases, and to summarize the clinical evidences about the efficacy and safety of stem cell therapy in such disorders

NUTRITION, MALNUTRITION AND DIETARY INTERVENTIONS IN INFLAMMATORY BOWEL DISEASE

Inflammatory Bowel Disease (IBD), which includes both Crohn's disease (CD) and Ulcerative Colitis (UC), is a chronic idiopathic inflammatory disorder affecting the gastrointestinal tract. Diet, as a source of luminal antigens, is thought to be an important factor in the pathogenesis of IBD. often the nutritional status of patients is significantly compromised, particularly in CD. several factors, including drug-nutrient interactions, disease location, symptoms, and dietary restriction can lead to protein energy malnutrition and specific nutritional deficiencies. solid evidence regarding the accountability of certain dietary components in the etiology of IBD are lacking. With regard to malnutrition, its consequence are growth failure, weight loss, bone disease, and/or micronutrient deficiencies, although micronutrient deficiency in IBD in most cases does not tend to have any evident clinical manifestation, except with regardo of iron, folic acid, and vitamin B. Nutritional supplemantation is essential for patients with evidence of malnutrition to increase calorie, and protein intake. Nutritional supplementation can also have efficacy in the induction and maintenance of remission in adults with CD, however it does not replace other treatments. Aim of this review is to discuss the role of nutrition and nutrients' deficiencies in the clinical setting of IBD, and to analyze efficacy and safety of the dietary interventions in patients with IBD

Conserved Daily Transcriptional Programs in Carica papaya

Most organisms have internal circadian clocks that mediate responses to daily environmental changes in order to synchronize biological functions to the correct times of the day. Previous studies have focused on plants found in temperate and sub-tropical climates, and little is known about the circadian transcriptional networks of plants that typically grow under conditions with relatively constant day lengths and temperatures over the year. In this study we conducted a genomic and computational analysis of the circadian biology of Carica papaya, a tropical tree. We found that predicted papaya circadian clock genes cycle with the same phase as Arabidopsis genes. The patterns of time-of-day overrepresentation of circadian-associated promoter elements were nearly identical across papaya, Arabidopsis, rice, and poplar. Evolution of promoter structure predicts the observed morning- and evening-specific expression profiles of the papaya PRR5 paralogs. The strong conservation of previously identified circadian transcriptional networks in papaya, despite its tropical habitat and distinct life-style, suggest that circadian timing has played a major role in the evolution of plant genomes, consistent with the selective pressure of anticipating daily environmental changes. Further studies could exploit this conservation to elucidate general design principles that will facilitate engineering plant growth pathways for specific environments

Un peso da telaio bollato ed iscritto da Entella

none2mixedFACELLA A; FACELLA MFacella, A; Facella,

Appendice al catalogo 1 - Reperti particolari. 6. Giavellotto in bronzo

none1mixedFACELLA AFacella,