15 research outputs found
Expression of Matrix Metalloproteinases 2 and 9 in Donor Liver, Cirrhotic Liver, and Acute Rejection After Human Liver Transplantation
No full textMatrix proteinases are known to play an important role in the cell migration during cancer invasion, in organ development, and in tissue damage during inflammatory process. Among the matrix proteinases, matrix metalloproteinases (MMP) are the most powerful proteinases. Changes at the extracellular matrix components play an essential role in acute rejection after orthotopic liver transplantation (OLT). This prospective clinical study investigated the alterations in the expression of MMP-2 (72-kd gelatinase type IV collagenase [gelatinase A]) and MMP-9 (92-kd gelatinase type IV collagenase [gelatinase B]) in patients with acute cellular rejection (ACR) compared with the biopsies of cirrhotic livers (CL) of patients who underwent OLT, and with healthy livers (HL) of the donors. Although MMP-2 expression was not present in the hepatocytes of the HL, it was in the endothelium; it was moderate in CL and severe in the livers suffering from ACR. MMP-9 expression, on the other hand, is found to be present only in the inflammatory cells, with an increasing intensity in HL, CL, and in livers suffering from ACR. The results suggest that MMP-2 and MMP-9, beside their roles in liver injury with tissue remodeling and fibrosis as mentioned in the previous studies, can be a marker of acute rejection
Role of simple V-Y advancement flap in the treatment of complicated pilonidal sinus
No full text[Abstract Not Available
Liver Pathology and Cell Proliferation After Calcineurin Inhibitors and Antiproliferative Drugs Following Partial Hepatectomy in Rats
No full textProtective effects of resveratrol on spleen and ileum in rats subjected to ischemia-reperfusion
No full text8th Meeting of the Turkish-Transplantation-Society -- JUN 22-24, 2005 -- Ankara, TURKEYResveratrol is as an antioxidant with free radical-scavenging activity and finds its clinical application in the prevention of postischernic tissue injury following solid organ transplantation. This study investigates the effect of Resveratrol on spleen and ileum tissues subjected to hepatic ischemia-reperfusion (I/R) in rats. Twenty-four rats were recruited in the study as follows: group A: I/R (n = 8), group B: I/R + Resveratrol (it = 8), and group C: sham operation (n = 8). After intraperitonealy pretreatment of eight rats with resveratrol (15 mg/kg/d) for 5 days, 16 rats were subjected to 45 minutes of hepatic ischemia followed by 30 minutes reperfusion period. Resveratrol was given 15 minutes prior to ischemia and just before the reperfusion in rats. After reperfusion period all rats were sacrified. Spleen and ileum tissues were examined spectrophotometrically to measure malondialdehyde (MDA), glutathione (GSH), and total nitrite, nitrate as an end product of nitric oxide (NO) levels. Concerning the spleen, statistically significant decrease of GSH and increase of MDA and NO levels were found group A when compared to groups B and C (P = .040, P = .004, and P = .001 group A vs group B; P = .05, P = .003, and P = .001 group A vs group C, respectively). Parallel results were obtained in ileum. A statistically significant decrease in GSH and an increase in MDA and NO levels in group A in respect to group B and group C was obtained (P = .048, P = .034, and P = .00.1 group A vs group B; P = .004, P = .001, and P = .003 group A vs group C, respectively). The result of this study shows that resveratrol has a protective effect on spleen and ileal mitochondrial oxidative stress in rats subjected to I/R.Turkish Transplantat So
Biliary Complications in 106 Consecutive Duct-to-Duct Biliary Reconstruction in Right-Lobe Living Donor Liver Transplantation Performed in 1 Year in a Single Center: A New Surgical Technique
No full textEffect of steroid on mitochondrial oxidative stress enzymes, intestinal microflora, and bacterial translocation in rats subjected to temporary liver inflow occlusion
No full text8th Meeting of the Turkish-Transplantation-Society -- JUN 22-24, 2005 -- Ankara, TURKEYProtective effects of steroids against ischemia-reperfusion (I/R) injury are well known, but there is little information about the influence of temporary inflow occlusion on intestinal barrier function or bacterial translocation. The aim of this experimental study was to investigate the effects on liver, kidney, spleen, Heal mitochondrial stress enzymes, and bacterial translocation of methylprednisolone (MP) in rats undergoing temporary liver inflow occlussion. Twenty-seven pathogen-free Wistar albino rats were randomized into three groups: group A: I/R (n = 10); group B: I/R + MP (n = 10); and group C: sham (n = 7). Rats in groups A and B were subjected to 20 minutes of portal vein and hepatic artery occlusion with 3 mg/kg MP injected into group B animals intraperitoneally during the occlusion. Twenty-two hours later, all rats were sacrificed to measure mitochondrial oxidative stress enzymes in liver, kidney, spleen, and ileum. We evaluated intestinal bacterial counts, intestinal mucosal histopathology, bacterial translocation to mesenteric lymph nodes (MLN), liver, spleen, and kidney. Decreased levels of malondialdehyde and increased levels of glutathione were observed in all examined tissues of group B compared to those of group A rats. Statistically significant increases in the intestinal counts of Klebsiella spp and Proteus spp and of bacterial translocation to liver, kidney, spleen, and MLN were measured in group B with respect to group A.Turkish Transplantat So
Acute portal vein thrombosis secondary to donor/recipient portal vein diameter mismatch after orthotopic liver transplantation.
No full text11th Annual Meeting of the International-Liver-Transplant-Society -- JUL 20-23, 2005 -- Los Angeles, CA[Abstract Not Available]Int Liver Transplant So
Protective effect of resveratrol, a red wine constituent polyphenol, on rats subjected to portal vein thrombosis
No full textThis experimental study investigated the prophylactic effects of the antioxidant and antiaggregant compound resveratrol (R) on portal vein thrombosis (PVT) in rats. Thirty rats weighing 200-250 g were distributed in 3 groups: Group A (n = 10) and underwent PVT+R, Group B (n = 10) PVT alone, and Group C (n = 10) were subjected to a sham operation. Group A rats received R (60 mg/d per naso-gastric tube) for 10 days before PVT. Concerning antioxidant status, statistically significant increases in both tissue and plasma levels of reduced glutathione (GSH) and decrease in malondialdehyde (MDA) levels were observed in the PVT+R group compared with the PVT group (P < .001 for all). Comparison of these parameters with those of the sham group revealed significantly higher tissue and plasma levels of GSH and low MDA levels among the sham-operated group when compared with to the PVT+R or PVT groups (P < .001 for all). Concerning the antiaggregant status, significant increases of c-AMP levels were detected in rats treated with R before experiencing PVT (P < .001). Cyclic AMP levels in the sham group were significantly higher than those of either the PVT or PVT+R groups (P < .001). One may advise patients undergoing liver transplantation and carrying certain cardiovascular disease risk factors to ingest foods containing R to minimize PVT
Maxillary brown tumor and uremic leontiasis ossea in a patient with chronic renal insufficiency
No full text
