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Search Results: 1 - 10 of 14060 matches for " Andrea; Villanacci "
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Chronic hepatitis in man and in dog: a comparative update
Cerquetella,Matteo; Giuliano,Vittorio; Rossi,Giacomo; Corsi,Simona; Laus,Fulvio; Spaterna,Andrea; Villanacci,Vincenzo; Bassotti,Gabrio;
Revista Espa?ola de Enfermedades Digestivas , 2012, DOI: 10.4321/S1130-01082012000400006
Abstract: chronic hepatitis is a frequent pathologic condition encountered in both dogs and humans; however, in the latter etiologic factors are usually searched and found that allow targeted therapeutic approaches, whereas in dogs this is less frequent. this review will take into consideration chronic hepatitis in dogs, and discuss differences and similarities between the two species with respect to this disease.
Inflammatory bowel disease in the dog: Differences and similarities with humans
Matteo Cerquetella, Andrea Spaterna, Fulvio Laus, Beniamino Tesei, Giacomo Rossi, Elisabetta Antonelli, Vincenzo Villanacci, Gabrio Bassotti
World Journal of Gastroenterology , 2010,
Abstract: Inflammatory bowel diseases (IBD) represent important chronic conditions affecting the gastrointestinal tract in man. However, similar disorders are found in several animal species and the IBD affecting dogs are particularly important. These are encompassed by an umbrella of probably several different entities with common symptoms, some of which seem to share striking similarities with human conditions. This review will focus on the actual knowledge of IBD in dogs, and attempt to identify differences and similarities with human IBD conditions.
Histological healing in inflammatory bowel disease: A still unfulfilled promise
Vincenzo Villanacci,Elisabetta Antonelli,Karel Geboes,Giovanni Casella
World Journal of Gastroenterology , 2013, DOI: 10.3748/wjg.v19.i7.968
Abstract: Treatment of inflammatory bowel disease (IBD) is traditionally based on several drugs, including salicylates, corticosteroids, and antibiotics; in addition, the therapeutic armamentarium has considerably evolved with the advent of newer, effective therapeutic measures (such as the biological agents) that are able to improve in a considerable manner both the clinical and endoscopic variables. Thus, mucosal healing, at least considered from an endoscopic point of view, is today regarded as the ultimate endpoint for treatment of these conditions. However, it is also increasingly clear that endoscopic healing is not necessarily paralleled by histological healing; There are few doubts that the latter should be considered as a true, objective healing and the ultimate goal to reach when treating patients with IBD. Unfortunately, and surprisingly, only a few, incomplete, and somewhat conflicting data exist on this topic, especially because there is still the need to standardize both histological assessment and the severity grading of these disorders; Issues that have not been yet been resolved for clinical practice and therapeutic trials. Hopefully, with the help of an increased awareness on the clinical researchers’ side, and the availability of dedicated pathologists on the other side, this matter will be effectively faced and resolved in the near future.
Eosinophilic esophagitis: an Italian experience Esofagitis eosinofílica: una experiencia italiana
C. Vindigni,V. Villanacci,M. Marini,B. J. Rocca
Revista Espa?ola de Enfermedades Digestivas , 2010,
Abstract: Background: eosinophilic esophagitis is an esophageal disorder characterized by esophageal and/or upper gastrointestinal tract symptoms, and by dense esophageal eosinophilia associated with a normal gastric and duodenal mucosa. Prevalently reported in children, eosinophilic esophagitis has recently been reported with increased frequency also in adults. Aims: the purpose of this study was to report our experience with eosinophilic esophagitis in Italy, since there are only very few series of such patients in our country. Patients and methods: we retrospectively reviewed the histological data of consecutive patients with a diagnosis of esophagitis or reflux disease in the period September 2004-September 2008. Eosinophils were counted where they appeared most numerous in the biopsy, with a cutoff > 15 eosinophils in more than one high-power field as diagnostic of eosinophilic esophagitis. Patients were excluded if gastric or duodenal biopsies showed a prominent eosinophilic infiltrate. Results: twenty two patients (14 adults, 8 children, age range 2-59 years) were identified according to the above criteria. The average eosinophil count was 86/ high-power field (range 31-150), associated with other pathologic features (eosinophilic microabscesses eosinophil degranulation, basal zone hyperplasia, papillary elongation). The main clinical complaints were dysphagia, food impaction, and heartburn, and endoscopic findings consisted of mucosal thickening and inelasticity, longitudinal shearing, rings, and white specks, without difference between adults and children for both clinical and endoscopic variables. Conclusions: eosinophilic esophagitis is not rare in Italy, and displays clinical, endoscopic, and pathologic features similar to those described in other countries.
Influence of genetics on tumoral pathologies: The example of the adenocarcinoma arising in Barrett's esophagus Influencia de la genética en la patología tumoral: El ejemplo del adenocarcinoma desarrollado sobre el esófago de Barrett
Vincenzo Villanacci,Gabrio Bassotti,Marianna Salemme,Elisa Rossi
Revista Espa?ola de Enfermedades Digestivas , 2012,
Abstract: Barrett's esophagus (BE) refers to an abnormal change (metaplasia) in the cells of the inferior portion of the esophagus. About 10% of patients with symptomatic gastroesophageal reflux disease (GERD) have BE. In some cases, BE develops as an advanced stage of erosive esophagitis. The risk of esophageal cancer appears to be increased in patients with BE. The only way to diagnose BE is by endoscopy and histology. Some studies suggest that intensive treatment of Barrett's esophagus with effective acid suppression can reduce the amount of abnormal lining in the esophagus. It is not clear whether such treatment also prevents esophageal cancer. Generally, the cancer starts out as carcinoma of the esophagus on the surface, and then invades the surrounding tissue. Surgery offers the best chance of long-term survival. There are many events that occur in Barrett's esophagus that lead to the development of cancer and most of them appear to occur early, before high-grade dysplasia or cancer develops. No one knows what the late events are and how cells acquire the ability to leave their normal growth boundaries. It is now widely accepted that the development of most cancers is due to something called genomic or genetic instability. The aim of this review is to show BE pathology in its progression to cancer looking for new biomarkers to distinguish between BE-dysplasia (low grade and high grade)- adenocarcinoma (ADC) and to characterize the ADC, giving more hope for its treatment.
Non-IBD colitides: clinically useful histopathological clues Colitis no relacionadas con la enfermedad inflamatoria intestinal: claves histopatológicas de utilidad clínica
Vincenzo Villanacci,Stefania Manenti,Elisabetta Antonelli,Mariella Chiudinelli
Revista Espa?ola de Enfermedades Digestivas , 2011,
Abstract: Apart from inflammatory bowel diseases (IBD), there are several other form of colitis that may resemble macroscopically IBD, entering the differential diagnosis. These forms are represented by infectious colitis, ischemic colitis, pseudomembranous colitis, colitis related to diverticular disease, colitis related to mucosal prolapse, drug colitis, allergic colitis, and microscopic colitis. However, to distinguish between these forms is not always easy, and it frequently requires a strict interrelationship between the pathologist and the gastroenterologist. Here we discuss the more frequent forms of non- inflammatory bowel diseases colitides, trying to give useful hints for helping the clinician to better understand the extent to which the pathologist is called to give a definitive response in the differential diagnosis of these entities.
Acute hepatitis caused by minocycline Hepatitis aguda por minociclina
G. Casella,V. Villanacci,C. Di Bella,E. Drera
Revista Espa?ola de Enfermedades Digestivas , 2010,
Abstract:
Epidermal growth factor receptor overexpression/amplification in adenocarcinomas arising in the gastrointestinal tract Sobre-expresión amplificación del receptor del factor de crecimiento epidérmico en el adenocarcinoma del trqacto gastrointestinal
Elisa Rossi,Vincenzo Villanacci,Cesare Danesino,Francesco Donato
Revista Espa?ola de Enfermedades Digestivas , 2011,
Abstract: Introduction: it has been suggested that EGFR might be valuable to select patients for immunotherapy for various types of cancers. Aims: we investigated: a) the gene/proteins alterations in gastrointestinal cancers using immunohistochemistry (IHC) (gene overexpression) and fluorescence in situ hybridisation (FISH) (gene amplification); and b) the associations between EGFR overexpression and amplification and chromosome 7 aneusomy (CEP7) in these cancers. Methods: 64 tumor specimens were evaluated by IHC and FISH: 17 adenocarcinoma arising in Barrett's esophagus, 21 stomach cancers, 17 colon cancers, and 9 liver metastasis of colon carcinoma. IHC for EGFR was scored at 4 levels of intensity of membrane staining. EGFR gene in FISH was considered as amplified or not and chromosome 7 (where EGFR is located) as polisomic or disomic. The ratio between EGFR gene and chromosome 7 was performed by FISH and classified the case as gene amplification when the ratio was > 2. Polisomy was identified when the copies of chromosome 7 were > 2 in more than 8% malignant cells. Results: no difference was found between EGFR gene amplification/protein overexpression according to cancer site. Concerning IHC, most cases were positive for EGFR intensity (84.4%), while only 50% of cases were positive considering a cut-off of 10%. EGFR FISH amplification was found in 4 cases only (6.2%) and FISH CEP7 aneusomy in 40.6%. A statistically significant association was found between EGFR protein positivity (IHC) in term of intensity and EGFR gene amplification by FISH (p = 0.003), and between the EGFR protein positivity (IHC) and chromosome 7 aneusomy (FISH) (p = 0.004). Conclusions: EGFR amplification assessed by FISH was found in only 4 cases (6.2%) while chromosome 7 aneusomy was identified in 26 (40.6%) cases. IHC proved that EGFR protein overexpression in gastrointestinal cancers is common but FISH assessment showed that EGFR gene amplification is rare. An association was observed between EGFR gene amplification and EGFR protein overexpression in a low number of cases (p = 0.003). A statistically significant association was found between EGFR protein overexpression and chromosome7 polisomy (p = 0.004).
Colonoscopic findings in coeliac disease on a gluten-free diet
G. Casella,V. Villanacci,C. Di Bella,E. de Marco
Revista Espa?ola de Enfermedades Digestivas , 2010,
Abstract: Background: to date, there are few data on colonoscopic findings in patients with celiac disease, and most of these obtained in patients with iron deficiency anaemia. Aims: we assessed colonoscopic findings in unselected patients with coeliac disease, since there are no studies available also considering morphological aspects, and there is literature suggestion of increased prevalence of colorectal tumours. Material and methods: colonoscopies with multiple biopsies were retrospectively analyzed in 42 coeliac disease patients on gluten-free diet above age 40; 16 had clinical or laboratory features of iron deficiency anaemia. Mucosal biopsies were evaluated for the presence of intraepithelial lymphocytes and of mucosal eosinophils, in addition to conventional histologic assessment, and compared with those obtained in 15 controls. Results: macroscopic abnormalities (polyps, diverticula, inflammatory changes) were found in 26% of patients. Microscopic abnormalities (lymphocytic colitis, melanosis coli, rectal histiocytosis) were found in 36% of patients. None of these findings was found in controls. Coeliac disease patients had significantly higher eosinophil score than controls in the right colon, whereas this was not significantly different between groups in the left colon. Conclusions: colonoscopic findings in coeliac disease on gluten-free diet may reveal significant findings, even in patients without iron deficiency anaemia. There is the need of further studies in larger cohorts of patients to establish whether colonoscopy in these patients may be clinically useful.
Collagenous sprue with associated features of refractory celiac disease Sprue colágeno con características de enfermedad celiaca refractaria
Lucio Cuoco,Vincenzo Villanacci,Mario Salvagnini,Gabrio Bassotti
Revista Espa?ola de Enfermedades Digestivas , 2012,
Abstract:
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