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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    World journal of surgery 6 (1982), S. 471-477 
    ISSN: 1432-2323
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Une étude expérimentale a été conduite pour étudier les modifications des fonctions endocriniennes du pancréas au cours de la pancréatite aigue. Pour ce faire des rats mâles (de race Donryu) ont été divisés en deux groupes: le premier constitué de rats chez qui fut provoquée une pancréatite aigue selon la méthode de Block, le second formé de rats chez qui fut pratiqué une simple laparotomie. L'examen histologique du pancréas des rats du premier groupe met en évidence une pancréatite aigue oedémateuse interstitielle, sans qu'il y ait d'altérations importantes des cellules endocrines en dépit des modifications inflammatoires des cellules exocrines. Le taux de l'insuline et du glucagon au niveau du tissu pancréatique des rats du premier groupe a été trouvé significativement abaissé par rapport aux rats du second groupe. Les études autoradiographiques employant un corps marqué (3H leucine) ont montré une baisse significative du nombre des granules endocriniens chez les rats atteints de pancréatite aigue oedémateuse. La libération de l'insuline à partir des ilôts de Langerhans isolés ne fut réduite que 72 heures après le développement de la pancréatite aigue cependant que ce phénomène de réduction s'observait dès la 6ème heure pour le glucagon. Ces faits indiquent que la pancréatite aigue s'accompagne d'une réduction de la synthèse et de la secrétion des hormones pancréatiques et suggèrent que l'atteinte des cellules A est plus précoce que celle des cellules B.
    Notes: Abstract This experimental study was carried out to clarify changes in pancreatic endocrine function in acute pancreatitis. Male Donryu rats were divided into 2 groups, consisting of a group with acute pancreatitis induced by Block's method, and another group with simple laparotomy as control. Histological examination in the former group revealed an interstitial edematous pancreatitis, but there was no marked alteration of endocrine cells in spite of inflammatory changes in the exocrine region. Insulin and glucagon levels in the pancreatic tissue of rats with acute pancreatitis were significantly lower than those of control rats. Autoradiographic studies using3H-leucine showed a significant decrease of grain counts for endocrine granules in rats with acute pancreatitis. The release of insulin from isolated islets of Langerhans was not reduced until 72 hours after the development of acute pancreatitis, while the release of glucagon from isolated islets was reduced 6 hours after the development of acute pancreatitis. These findings indicate that there is a reduction of synthesis and secretion function in endocrine cells of the pancreas in acute pancreatitis, and suggest that the damage to A cells occurs more rapidly than damage to B cells.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1436-2813
    Keywords: breast cancer ; regional lymph node dissection ; modified extended mastectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The results of an analysis done on the regional lymph node metastases of 300 patients with operable breast cancer, who were treated in the Department of Surgery (II), Kanazawa University Hospital from 1973 to early 1988 are reported herein. It was found that the metastases of the axillary and internal mammary lymph nodes were closely related to the survival of patients, but they were hardly diagnosed before the operation. Only the dissection of these lymph nodes proved useful for providing the prognostic information. Moreover, in a retrospective study comparing theen bloc extended radical mastectomyversus the other types of mastectomy, the extended radical mastectomy was seen to greatly improve the survival of patients with 3 or less than 3 metastatic axillary lymph nodes. Thus, the extended radical mastectomy provides the maximum diagnostic and prognostic information, and gives the best chance of loco-regional control of the disease. The anterior chest deformity created by the extended radical mastectomy, however, should be avoided in those patients without internal mammary involvement. We therefore propose the modified extended mastectomy as a staging operation.
    Type of Medium: Electronic Resource
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