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Helicobacter pylori infection and extragastric disorders in children: A critical update

World Journal of Gastroenterology 2014年第6期20卷 1379-1401页

作者： Lucia Pacifico John F Osborn valeria tromba Sara Romaggioli Stefano Bascetta Claudio Chiesa Department of Pediatrics Sapienza University of Rome Department of Health Sciences and Infectious Diseases Sapienza University of Rome Institute of Translational Pharmacology National Research Council

Helicobacter pylori(H. pylori) is a highly prevalent, serious and chronic infection that has been associated causally with a diverse spectrum of extragastric disorders including iron deficiency anemia, chronic idiopathic thrombocytopenic purpura, growth retardation, and diabetes mellitus. The inverse relation of H. pylori prevalence and the increase in allergies, as reported from epidemiological studies, has stimulated research for elucidating potential underlying pathophysiological mechanisms. Although H. pylori is most frequently acquired during childhood in both developed and developing countries, clinicians are less familiar with the pediatric literature in the field. A better understanding of the H. pylori disease spectrum in childhood should lead to clearer recommendations about testing for and treating H. pylori infection in children who are more likely to develop clinical sequelae. A further clinical challenge is whether the progressive decrease of H. pylori in thelast decades, abetted by modern clinical practices, may have other health consequences.

关键词： Helicobacter pylori Children Iron defi-ciency anem

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Bone regeneration with adipose derived stem cells in a rabbit model

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The Journal of Biomedical Research 2019年第1期33卷 38-45页

作者： Michele Maglione Enrico Salvador Maria E.Ruaro Mauro Melato Giuliana tromba Daniele Angerame Lorenzo Bevilacqua Department of Medical Sciences University of Trieste SISSA-International School for Advanced Studies Department of Pathology and Legal Medicine University of Trieste Elettra-Sincrotrone Trieste S.C.p.A.

It has been shown that stem cells are able to calcify both in vitro and in vivo once implanted under the skin, if conveniently differentiated. Nowadays, however, a study on their efficiency in osseous regeneration does not exist in scientific literature and this very task is the real aim of the present experimentation. Five different defects of 6 mm in diameter and 2 mm in depth were created in the calvaria of 8 white New Zealand rabbits. Four defects were regenerated using 2 different conveniently modified scaffolds(Bio-Oss Block and Bio-Oss Collagen, Geistlich),with and without the aid of stem cells. After the insertion, the part was covered with a collagen membrane fixed by 5 modified titan pins(Altapin). The defect in the front was left empty on purpose as an internal control to each animal.Two animals were sacrificed respectively after 2, 4, 6, 10 weeks. The samples were evaluated with micro-CT and histological analysis. Micro-CT analysis revealed that the quantity of new bone for samples with Bio-Oss Block and stem cells was higher than for samples with Bio-Oss Block alone. Histological analysis showed that regeneration occurred in an optimal way in every sample treated with scaffolds. The findings indicated that the use of adult stem cells combined with scaffolds accelerated some steps in normal osseous regeneration.

关键词： bone regeneration regenerative medicine stem cells tissue engineering

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