Search results for "LANGER"
showing 10 items of 162 documents
In Vitro Cultured Islet‐Derived Progenitor Cells of Human Origin Express Human Albumin in Severe Combined Immunodeficiency Mouse Liver In Vivo
2004
Studies in rodents suggest the presence of a hepatopancreatic stem cell in adult pancreas that may give rise to liver cells in vivo. The aim of the present study was to determine the ability of human islet-derived cells to adopt a hepatic phenotype in vivo. Cultured human islet-derived progenitor cells that did not express albumin in vitro were stained with the red fluorescent dye PKH26 and injected into the liver of severe combined immunodeficiency mice. After 3 or 12 weeks, red fluorescent cells were detected in 11 of 15 livers and were mostly single cells that were well integrated into the liver tissue. Human albumin was found in 8 of 11 animals by immunohistochemistry, and human albumin…
Multilayer capsules: a promising microencapsulation system for transplantation of pancreatic islets
2001
In 1980, Lim and Sun introduced a microcapsule coated with an alginate/polylysine complex for encapsulation of pancreatic islets. Characteristic to this type of capsule is, that it consists of a plain membrane which is formed during a single procedural step. With such a simple process it is difficult to obtain instantly a membrane optimized with respect to all the properties requested for islet transplantation. To overcome these difficulties, it is recommended to build up the membrane in several consecutive steps, each optimized for a certain property. In this study, we have analysed such a multilayer microcapsule for the encapsulation of pancreatic islets. Therefore, empty and islet contai…
Il complesso di villa Filangeri a Santa Flavia
2008
Trajectoires et débats énergétiques dans la boulangerie française, 1780-1930
2016
International audience
El síndrome de Langer Giedion, de Cornelia de Lange y comorbilidad: una revisión bibliográfica
2015
Los Síndromes de Langer Giedion (LGS) y el de Cornelia de (CdLS) son síndromes congénitos raros, causados por una alteración cromosómica y pueden aparecer comórbidos. Ambos se caracterizan por anormalidades esqueléticas, retraso del crecimiento, rasgos faciales distintivos y específicos, y discapacidad intelectual en severidad variable. Se presenta una revisión bibliográfica, de artículos publicados en el periodo 2010-2015, sobre ambos síndromes y su comorbilidad. Se han seleccionado para su análisis 33 artículos, con el objetivo de determinar el estado de la literatura científica actual. En los resultados se observa cómo las publicaciones relacionadas con estos síndromes pertenecen en su m…
Langer-Giedion syndrome with interstitial 8q-deletion.
1982
We describe a 12-year-old girl with Langer-Giedion syndrome (tricho-rhino-phalangeal syndrome type II) who also had vertebral malformations. Chromosome analysis identified an interstitial del(8q): 46,XX,del(8)(pter leads to q22::q234 leads to qter) as a cause of this syndrome.
Le travail de la routine : autour d'une controverse sociotechnique dans la boulangerie française du XIXe siècle
2010
International audience; Au XIXe siècle, le travail des boulangers est pris dans la tension permanente entre le rêve industrialiste des ingénieurs et des hygiénistes et la défense des savoirs pratiques des hommes du métier. De nombreux efforts sont tentés pour mécaniser le travail du pétrissage considéré comme insalubre et dangereux. Mais ils furent largement infructueux avant 1914, l’essentiel du métier considérant la mécanisation comme impraticable. Dans ce secteur, les controverses qui accompagnent les mutations du travail se disent d’abord dans le langage de la routine. Savoir de haute valeur pour les hommes du métier, les routines incarnent au contraire, pour les savants et les industri…
La querelle des gestes. Corps des boulangers et contestation du machinisme (France, XIXe siècle)
2012
The Role of the α Cell in the Pathogenesis of Diabetes: A World beyond the Mirror
2021
Type 2 Diabetes Mellitus (T2DM) is one of the most prevalent chronic metabolic disorders, and insulin has been placed at the epicentre of its pathophysiological basis. However, the involvement of impaired alpha (α) cell function has been recognized as playing an essential role in several diseases, since hyperglucagonemia has been evidenced in both Type 1 and T2DM. This phenomenon has been attributed to intra-islet defects, like modifications in pancreatic α cell mass or dysfunction in glucagon’s secretion. Emerging evidence has shown that chronic hyperglycaemia provokes changes in the Langerhans’ islets cytoarchitecture, including α cell hyperplasia, pancreatic beta (β) cell dedifferentiati…
Fibril formation and toxicity of the non-amyloidogenic rat amylin peptide.
2012
Full-length native rat amylin 1-37 has previously been widely shown to be unable to form fibrils and to lack the toxicity of the human amylin form leading to its use as a non-amyloidogenic control peptide. A recent study has suggested that rat amylin 1-37 forms amyloidogenic β-sheet structures in the presence of the human amylin form and suggested that this property could promote toxicity. Using TEM analysis we show here fibril formation by synthetic rat amylin 1-37 and 8-37 peptides when the lyophilized HPLC purified peptides are initially dissolved in 20 mM Tris-HCl. Dissolution of synthetic rat amylin 1-37 and 8-37 peptides in H(2)O or phosphate buffered saline failed to produce fibrils.…