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001-es BibID:	BIBFORM014321
Első szerző:	Cserni Tamás (gyermeksebész)
Cím:	Hydrostatic characteristics of the ileocolic valve and intussuscepted Nipple valves : an animal model / Cserni Tamás, Pap Szekeres József, Furka István, Németh Norbert, Józsa Tamás, Mikó Irén
Dátum:	2005
ISSN:	0894-1939
Megjegyzések:	The ileocolic valve, in the dog, decelerates the passage of stools and prevents fecal reflux. A loss of anterograde resistance worsens the symptoms of short bowel syndrome. The absence of fecal reflux control enhances the risk of recurrence of Crohn's disease. The aim of the present study was to examine what length of intussusception-like nipple valve (INV) should be constructed in order to restore the hydrostatic characteristics of the normal ileocecal valve. The anterograde and retrograde hydrostatic resistances of INVs of different lengths (4, 5, 6, or 7 cm) were compared with those of the normal ileocolic valve by using a contrast enema and x-ray monitoring in a canine model. It was found that the 4-cm-long INV may be sufficient to achieve an appropriate antireflux efficacy (59.60 +/- 4.26 cm H(2)O) versus the ileocolic valve (25.80 +/- 4.92 cm H(2)O), but this does not furnish an anterograde resistance comparable to that of the normal ileocolic valve (10.70 +/- 1.15 cm H(2)O vs. 21.60 +/- 3.96 cm H(2)O). We found that the appropriate length of the INV with which the anterograde resistance of the ileocolic valve could be attained in our model was between 6 and 7 cm. Thus, the shortest possible constructed INV should be effective in clinical conditions such as Crohn's disease, but the recommended length in short bowel syndrome should be greater than this.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban egyetemen (Magyarországon) készült közlemény
Megjelenés:	Journal Of Investigative Surgery. - 18 : 4 (2005), p. 185-191. -
További szerzők:	Pap Szekeres József (1965-) (sebész) Furka István (1935-2021) (sebész, urológus, kutatóorvos) Németh Norbert (1975-) (kutatóorvos) Józsa Tamás (1969-) (gyermeksebész, urológus) Mikó Irén (1948-) (kutató sebész)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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001-es BibID:	BIBFORM008845
Első szerző:	Józsa Tamás (gyermeksebész, urológus)
Cím:	Short-term adaptation of rat intestine to ileostomy : implication for pediatric practice / Józsa T., Magyar A., Cserni T., Szentmiklósi J. A., Erdélyi K., Kincses Z., Rákóczy G., Balla G., Roszer T.
Dátum:	2009
ISSN:	0894-1939
Megjegyzések:	Surgical neonates with complex intestinal conditions, such as enterocolitis, midgut volvulus with bowel loss and multiple atresias, often require temporary stomas. Little is known on the postsurgical response of the altered gut segments, although adaptation is an important consideration in neonatal postoperative care, particularly after stoma closure. MATERIALS AND METHODS: Rats underwent bowel resection at a point 15 cm proximal to the ileocecal valve, and a split ileostomy was performed. On the 6th postoperative day the mucosal thickness was calculated with Soft Imaging System Analysis Pro, the rate of proliferation was measured following Ki67 immunohistochemistry and the apoptotic index was determined on sections stained with ApopTag Plus. The intestinal motor activity was recorded on isolated gut segments. Neuronal nitric oxide synthase (nNOS) expression and distribution was examined with NADPH-diaphorase histochemistry and Western blot analysis. RESULTS: An increased wet weight of the mucosa and a pronounced mucosal thickening were observed in the proximal functional bowel segment. Enterocyte proliferation rate was increased significantly, while the apoptotic index remained unchanged in the epithelial layer. The dilation of the gut lumen resulted in a morphological change in the nitrergic myenteric network with an overexpression of nNOS. As a consequence of the surgical procedure, the functional proximal gut segment showed strong and frequent contraction waves, with an enhanced responsiveness to cholinergic stimuli. CONCLUSIONS: The dilated functional bowel segment was characterized by hyperplasic changes in the mucosa and stronger mechanical activity with overproduction of nNOS. Although early restoration of intestinal continuity is recommended, our observations on adaptive changes may partly explain intestinal motility disorders after early stoma closure, suggesting the need for a careful approach to a redo-laparotomy.
Tárgyszavak:	Orvostudományok Elméleti orvostudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk rat intestine to ileostomy ileostomy short bowel syndrome intestinal adaptation neonate gastrointestinal nervous system egyetemen (Magyarországon) készült közlemény
Megjelenés:	Journal of Investigative Surgery. - 22 : 4 (2009), p. 292-300. -
További szerzők:	Magyar Ágnes (1979-) (gyermeksebész) Cserni Tamás (1967-) (gyermeksebész) Szentmiklósi József András (1948-) (farmakológus, klinikai laboratóriumi szakorvos) Erdélyi Katalin (1978-) (molekuláris biológus, biokémikus) Kincses Zsolt (1961-) (orvos) Rákóczy György Balla György (1953-) (csecsemő és gyermekgyógyász, neonatológus) Röszer Tamás (1979-) (orvos, biológus)
Internet cím:	elektronikus változat DOI
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