title: [Apoptosis participation in the acute rejection of intestinal transplantation in rats].
abstract: BACKGROUND
  Intestinal transplantation is a possible treatment for patients with short bowel syndrome, aiming the reintroduction of oral diet. However, the major obstacle in this procedure is the strong rejection. Delay in rejection diagnosis may be irreversible and lethal.
  
  
  OBJECTIVE
  To define method for early diagnosis of rejection based on the apoptosis from intestinal allograft.
  
  
  METHODS
  Isogenic rats Brown-Norway (BN) and Lewis (LEW) were submitted to intestinal heterotopic allotransplantation and divided in two groups: LEW donor to LEW recipient isograft group C and BN donor to LEW recipient allograft group (Tx). According to the day of sacrifice, Tx group were subdivided in three subgroups with eight animals each as follow: Tx3-- sacrificed at third postoperative day (POD), Tx5 -- sacrificed at fifth POD and Tx7 -- sacrificed at seventh POD. Eight animals from control group were subdivided in three moments according to the time of biopsy from the graft as follow: C3 -- biopsy at third POD; C5 -- biopsy at fifth POD and C7 -- biopsy at seventh POD. All animals from control group were sacrificed at seventh POD. Rejection parameters were compared between the control groups (C3 vs C5, C3 vs C7 and C5 vs C7, and allograft group (Tx3 vs Tx5, Tx3 vs Tx7 and Tx5 vs Tx7). The same parameters were analyzed between the control group and allograft groups ( C3 vs Tx3, C5 vs Tx5 and C7 vs Tx7). In C group no statistical significant difference regarding the expression of the apoptotic cells were detected, while in Tx group, the presence of apoptotic cells were remarkable since the third postoperative day.
authors.affiliation: Departamento de Gastroenterologia, Faculdade de Medicina, Universidade de São Paulo, SP.
authors.forename: André Dong Won
authors.initials: AD
authors.lastname: Lee
authors.forename: Ulysses
authors.initials: U
authors.lastname: Ribeiro
authors.forename: Marcelo Alves
authors.initials: MA
authors.lastname: Ferreira
authors.forename: Antônio
authors.initials: A
authors.lastname: Sesso
authors.forename: Cláudio José Caldas
authors.initials: CJ
authors.lastname: Bresciani
authors.forename: Joaquim
authors.initials: J
authors.lastname: Gama-Rodrigues
mesh_terms: D000208:Acute Disease; D000818:Animals; D017209:Apoptosis; D006084:Graft Rejection / Q000473:pathology*; D007421:Intestine, Small / Q000473:pathology / Q000637:transplantation*; D008297:Male; D051381:Rats; D011914:Rats, Inbred BN; D011917:Rats, Inbred Lew; D012778:Short Bowel Syndrome / Q000601:surgery*; D013997:Time Factors; D014184:Transplantation, Homologous