RESUMO
OBJECTIVE: To study the differential expression of genes between Hirschsprung's disease (HSCR) and normal tissue by using microarray for exploring the mechanism of HSCR development and establishing the gene expression profiles of HSCR. METHODS: Colon tissues (aganglionic and normal segments) of 4 patients with HSCR were detected by the Agilent SurePrint G3 Human GE 8x60K Microarrays. RT-PCR was used to verify the results of Microarray test. Then, immunohistochemistry was used to demonstrate the expression of HAND2 in the myenteric plexus of the colon from 46 patients with HSCR to further explore the relationship between HAND2 and development of HSCR. RESULTS: A total of 12,125 meaningful expressed genes were screened out. 4 pairs of specimens had 622 differentially expressed genes, 584 (93.89%) of which were up-regulated while 38(6.11%) were down-regulated. 6 of the 622 genes were tested by RT-PCR, which were consistent with the results detected by Microarray. The average optical density of positive expression of HAND2 in myenteric plexus was compared between the aganglionic, transitional, dilated, normal segments and control group. The average optical density in the aganglionic segments was obviously reduced. Statistical analyzed data showed that it has significant deviation (P<0.01). CONCLUSION: 1. A set of differentially expressed genes between aganglionic and normal segments of HSCR was obtained. Our data may provide significant information to research the pathogenesis of HSCR. 2. Reduced protein expression of HAND2 in the myenteric plexus of the aganglionic would suggest that HAND2 was involved in the pathogenesis of HSCR.
Assuntos
Perfilação da Expressão Gênica/métodos , Doença de Hirschsprung/genética , Análise de Sequência com Séries de Oligonucleotídeos , Fatores de Transcrição Hélice-Alça-Hélice Básicos/biossíntese , Fatores de Transcrição Hélice-Alça-Hélice Básicos/genética , Colo/metabolismo , Feminino , Estudos de Associação Genética , Humanos , Imuno-Histoquímica , Lactente , Masculino , Plexo Mientérico/metabolismo , RNA Mensageiro/biossíntese , RNA Mensageiro/genética , Receptores de Neurotensina/biossíntese , Receptores de Neurotensina/genética , Reação em Cadeia da Polimerase Via Transcriptase Reversa , Tubulina (Proteína)/biossíntese , Tubulina (Proteína)/genéticaRESUMO
OBJECTIVE: To investigate the prognostic factors for patients with gastrointestinal stromal tumors (GIST). METHODS: From 2000 to 2003, clinical data of 41 cases with GIST were reviewed retrospectively. The clinicopathologic diagnosis was determined by immunochemistry. The relationships of the prognosis with mitotic counts, tumor size and location,range of tumor resection were analyzed. RESULTS: The patients with GIST had pathological section of high expression in CD117, CD34 and vimentin (92.7%, 82.9%, 78%, respectively). Patients with tumor location in intestine, tumor size > 5 cm,mitotic counts > 5/50HPF, incomplete resection had poorer outcome, compared with those with tumor location in stomach and colon,tumor size < or = 5 cm,mitotic counts < or = 5/50HPF and complete resection (all P< 0.05). CONCLUSION: Complete gross resection can improve prognosis for patients with GIST. Tumors with mitotic counts > or = 5/50HPF, tumor size more than 5 cm and tumor location in intestine are poor prognostic factors.
Assuntos
Tumores do Estroma Gastrointestinal/diagnóstico , Tumores do Estroma Gastrointestinal/patologia , Adolescente , Adulto , Idoso , Feminino , Seguimentos , Tumores do Estroma Gastrointestinal/cirurgia , Humanos , Imuno-Histoquímica , Masculino , Pessoa de Meia-Idade , Prognóstico , Estudos Retrospectivos , Adulto JovemRESUMO
BACKGROUND: Simultaneous pancreas-kidney transplantation (SPK) with portal-enteric drainage is physiological effective in treatment of patients with diabetes mellitus complicated by end-stage renal disease. A case is reported with a review of our clinical experience. METHODS: A patient with type 2 diabetes complicated by renal failure was subjected to SPK transplantation with portal-enteric drainage. Pancreaticoduodenal allograft procured from corpse was transplanted to recipient's right abdomen with donor's portal vein anastomosed to recipient's superior mesenteric vein. Donor's plastic pancreas artery was anastomosed to recipient's right common iliac artery and donor's duodenum anastomosed to recipient's jejunum. The kidney allograft was transplanted ectopically to the contralateral iliac fossa. Postoperative immunosuppression includes tacrolimus (TAC)/mycophenolate mofetil (MMF)-based regimen and methylprednisolone or prednisone. RESULTS: On the 5th postoperative day, the level of blood creatinine decreased from 590 micromol/L to normal. Daily urine volume was about 2500 ml. On the 18th postoperative day, insulin was given up, and the levels of fasting blood-glucose and after meal blood-glucose were kept normal. No acute rejection symptoms or other complications were observed except infection of Pseudomonas aeruginosa. CONCLUSION: Combined pancreas and kidney transplantation with portal-enteric drainage is a physiological effective treatment for diabetic patients with end-stage renal disease.
