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Tytuł oryginału: Ultrastructural observations of intermediate cells in chronic pancreatitis.
Autorzy: Szynaka Beata, Zimnoch Lech, Puchalski Zbigniew
Źródło: Hepatogastroenterology 2002: 49 (46) s.1120-1123, il., bibliogr. 28 poz.
Sygnatura GBL: 304,355

Hasła klasyfikacyjne GBL:
  • gastroenterologia

    Typ dokumentu:
  • praca kliniczna
  • praca opublikowana za granicą
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie

    Streszczenie angielskie: Background/Aims: The intermediate cells exibiting both exo- and endocrine features occur in small numbers in the normal and pathologic pancreas of many animal species. In human pathology their presence has ben reported in children with hyperinsulinemia, in hypoglycemia, and chronic hypergastrinemia. Methodology: Fragments of the pancreas collected from 27 patients operated on for chronic pancreatitis of various intensity fibrosis (1ř - IVř) was subjected to ultrastructural analysis. Results: All chronic pancreatitis cases revealed the presence of intermediate cells that were found outside Langerhans islets, separately or in small groups. They were more common in IIIř and IVř chronic pancreatitis. All forms of chronic pancreatitis with Iř - IVř fibrosis showed, apart from undamage cells, numerous intermediate cells with features of destruction. Some intermediate cells contained fibrilate cytoplasm inclusion bodies. Intermediate cells took part in the formation of acini and were also found among ductural cells. Conclusions: The presence of intermediate cells both within the acinar texture and among proliferating ductular cells conforms the common origin of these cellular elements of the pancreas. In chronic pancreatitis intermediate cells appear during pancreatic texture regeneration, being rather abnormal cell forms produced in this process than an intermediate stage in precursor cell diferentiation.

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    Tytuł oryginału: Mast cells and pancreatic stellate cells in chronic pancreatitis with differently intensified fibrosis.
    Autorzy: Zimnoch Lech, Szynaka Beata, Puchalski Zbigniew
    Źródło: Hepatogastroenterology 2002: 49 (46) s.1135-1138, il., tab., bibliogr. 15 poz.
    Sygnatura GBL: 304,355

    Hasła klasyfikacyjne GBL:
  • gastroenterologia

    Typ dokumentu:
  • praca kliniczna
  • praca opublikowana za granicą
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie

    Streszczenie angielskie: Background/Aims: The pathogenesis of pancreatic fibrosis is unknown. Pathogenic analyses take into account the effect of oxidant stress and the increase in free radicals leading to degranulation of mast cells, which may cause inflammation and activate fibrosis. Activated pancreatic stellate cells produce abnormal components of intercellular substance and are responsible for pancreatic fibrogenesis. The aim of the study was to determine the correlation between the presence and state of mast cells and pancreatic stellate cells activation in chronic pancreatitis with varied intensity fibrosis. Methodology: We studied 27 patients with chronic pancreatitis of varied fibrosis intensity. Immunohistochemical reactions for mast cells (anti-human mast cell tryptase) and ultrastructural analyses of mast cells and pancreatic stellate cells were performed. The number of degranulated mast in the ultrastructural picture and the number of pancreatic stellate cells stained positive for vimentin and ŕ-smooth muscle actin were counted. Results: A significant increase was revealed in the number of degranulated mast cells - to 35.6 p.c. in chronic pancreatitis Iř fibrosis, 68.3 p.c. in IIř, 75.1 p.c. in IIIř and IVř (control 10.2 p.c.) and a parallel increase in the number of activated pancreatic stellate cells (stained positive for ŕ-smooth muscle actin) to 328 ń 29/mmý in Iř fibrosis, to 978 ń 67/mmý in IIř and 2355 ń 331/mmý in IIIř and IVř (control 38.8 ń 9/mmý). Conclusions: The increase in the number of activated pancreatic stellate cells parallel to the increase in degranulated...

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