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Can endoscopic atrophy predict histological atrophy? Historical study in United Kingdom and Japan

World Journal of Gastroenterology 2015年第46期21卷 13113-13123页

作者： Shin Kono Takuji Gotoda Shigeaki Yoshida Ichiro Oda Hitoshi Kondo luigi gatta Greg Naylor Michael Dixon Fuminori Moriyasu Anthony Axon Department of Gastroenterology and Hepatology Tokyo Medical University Aomori Prefectural Central Hospital Endoscopy Division National Cancer Center Hospital Center for Digestive Diseases Tonan Hospital Gastroenterology and Digestive Endoscopy Unit Versilia Hospital Chesterfield Royal Hospital Academic Unit of Pathology University of Leeds Centre for Digestive Disease Leeds General Infirmary

AIM: To assess the diagnostic concordance between endoscopic and histological atrophy in the United Kingdom and ***: Using published data,a total of 252 patients,126 in the United Kingdom and 126 in Japan,aged 20 to 80 years,were evaluated. The extent of endoscopic atrophy was classified into five subgroups according to a modified Kimura-Takemoto classification system and was compared with histological findings of atrophy at five biopsy sites according to the updated Sydney ***: The strength of agreement of the extent of atrophy between histology and visual endoscopic inspection showed good reproducibili ty,wi th a weighted kappa value of 0.76(P < 0.001). Multivariate analysis showed that three factors were associated with decreased concordance: Japanese ethnicity [odds ratio(OR) 0.22,95% confidence interval(CI) 0.11-0.43],older age(OR = 0.32,95%CI: 0.16-0.66) and endoscopic atrophy(OR = 0.10,95%CI: 0.03-0.36). The strength of agreement between endoscopic and histological atrophy,assessed by cancer risk-oriented grading,was reproducible,with a kappa value of 0.81(95%CI: 0.75-0.87). Only nine patients(3.6%) were endoscopically underdiagnosed with antral predominant rather than extensive atrophy and were considered false ***: Endoscopic grading can predict histological atrophy with few false negatives,indicating that precancerous conditions can be identified during screening endoscopy,particularly in patients in western countries.

关键词： Gastritis Atrophy Histology Endoscopy Diagnosis

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Gelatin-biofermentative unsulfated glycosaminoglycans semi-interpenetrating hydrogels via microbial-transglutaminase crosslinking enhance osteogenic potential of dental pulp stem cells

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Regenerative Biomaterials 2021年第3期8卷 110-123页

作者： Annalisa La gatta Virginia Tirino Marcella Cammarota Marcella La Noce Antonietta Stellavato Anna Virginia Adriana Pirozzi Marianna Portaccio Nadia Diano luigi Laino Gianpaolo Papaccio Chiara Schiraldi Dipartimento di Medicina Sperimentale Universita`della Campania“Luigi Vanvitelli”via L.De Crecchio 7Naples 80138Italy Dipartimento Multidisciplinare di Specialita’Medico-Chirurgiche e Odontoiatriche via Luigi De Crecchio6Napoli 80138Italy

Gelatin hydrogels by microbial-transglutaminase crosslinking are being increasingly exploited for tissue engineering,and proved high potential in bone *** study aimed to evaluate,for the first time,the combination of enzymatically crosslinked gelatin with hyaluronan and the newly developed biotechnological chondroitin in enhancing osteogenic *** enzymatic crosslinking was carried out in the presence of hyaluronan or of a hyaluronan–chondroitin mixture,obtaining semi-interpenetrating *** latter proved lower swelling extent and improved stiffness compared to the gelatin matrix alone,whilst maintaining high *** heteropolysaccharides were retained for 30 days in the hydrogels,thus influencing cell response over this *** evaluate the effect of hydrogel composition on bone regeneration,materials were seeded with human dental pulp stem cells and osteogenic differentiation was *** expression of osteocalcin(OC)and osteopontin(OPN),both at gene and protein level,was evaluated at 7,15 and 30 days of *** electron microscopy(SEM)and two-photon microscope observations were performed to assess bone-like extracellular matrix(ECM)deposition and to observe the cell penetration *** the presence of the heteropolysaccharides,OC and OPN expression was upregulated and a higher degree of calcified matrix formation was *** with hyaluronan and chondroitin improved both the biophysical properties and the biological response of enzymatically crosslinked gelatin,fastening bone deposition.

关键词： hydrogels gelatin hyaluronan biotechnological chondroitin bone regeneration human dental pulp stem cells

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