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Objective To study the relationship between hepatic arterial buffer response (HABR),recovery of liver function,early biliary complications and small-for-size syndrome (SFSS).Methods Early hepatic hemodynamic parameters (including hepatic arterial flow (HAF),portal venous flow (PVF) were measured using duplex Doppler sonography in 34 patients who received living donor liver transplantation (preoperatively n＝26,intraoperatively n=26) and on postoperative days 1,2,3,and 7.Alanine aminotransferase (ALT),aspartate aminotransferase (AST) and total bilirubin (TBIL) level were measured preoperatively and on postoperative days 1,2,3,7,14,21,and 28.If TBIL level was elevated,we used B ultrasonography or CT and even ERCP to diagnose early biliary complications.The days taken for AST,AI T and TBIL to recover and the number of patients with early (＜60 days) biliary complications (bile leakage or bile stricture) and with small-for-size syndrome (SFSS) were recorded.Results Passive hepatic artery buffer response (HABR) was present in 11 patients early after living donor liver transplantation (group 1) and it disappeared in 23 patients (group 2).The recovery in days taken for normalization of AST (10.6± 8.8),AIT (11.6±9.0) and TBlL (average of 29) in group 1 were shorter than in group 2.However,the differences did not reach statistics difference (P＞0.05).The overall incidences of early biliary complications and small-for-size syndrome (SFSS) in group 1 were significantly lower than in group 2 (P=0.04).The survival rate in group 1 was 82 ％,compared with 74 ％ in group 2.Conclusions Passive hepatic arterial buffer response (HABR) disappeared in some patients early after living donor liver transplantation.There were high incidences of early biliary complications and small-for-size syndrome (SFSS) in these patients.Measurcment of hepatic buffer response in the early stage after living donor liver tranaplanta tion is valuable for predition of early biliary complications and small-for-size syndrome (SFSS),thus helping to prevent failure in transplantation.
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Objective To investigate the protective effect of polymyxin B (PMB) to the liver graft after liver transplantation and the underlying mechanism in rats.Methods Male SD rats were selected as the donors and recipients.Non-artery whole liver transplantation model was established in rats according to Kamada's two-cuff method.The rats were divided into two groups by the way of random number table method:control group (normal saline,0.5 ml) and PMB group (PMB,1 mg/ml,0.4 mg/kg+ normal saline 0.5 ml).The levels of portal vein plasma endtotoxin (EU/ml)were determined by endotoxin-analyzing machine of BET-24A. ALT,BUN,and TNF-α,IL-6 in serum were measured by using machine of Automatic Analyzer and ELISA,respectively.The CD14,TLR4,NFκB and AP-1 in the grafts were measured by RT-PCR and Western blotting,and pathological changes were observed. Results PMB decreased the levels of portal vein plasma endotoxin 1 h after reperfusion in PMB group as compared with control group (P＜0.05),and the levels of portal vein plasma endotoxin returned to the normal levels 6 h after reperfusion in both two groups (P＞0.05).After operation,the levels of ALT,TNFα and IL-6 in serum were significantly reduced (P＜0.05),the expression of CD14 and TLR4 mRNA in the grafts was significantly decreased (P＜0.05),the expression of Hsp60 protein and mRNA,and NF-κB and AP1 proteins in the grafts were reduced (P＜0.05),and the pathological damage to the grafts was significantly alleviated in PMB group as compared with control group.Conclusion PMB reduced the levels of portal vein plasma endotoxin after reperfusion in liver transplantation in rats.PMB improved liver function,reduced the injury of inflammatory response,decreased the levels of endotoxin signal pathway markers and alleviated the pathological damage to the grafts.
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Objective To investigate and compare the dynamic changes of plasma endotoxin and CD14/TLR4 levels in the portal vein following partial liver transplantation in rats. Methods 100 %(group Ⅰ), 50 % (group Ⅱ) and 30 % (group Ⅲ) orthotopic liver transplantation models in the SD rats→SD rats were established in vivo according to "Kamada two-cuff method". Based on the principle of dynamic turbidity law, the plasma endotoxin (EU/ml) levels were determined at the postoperative time points of 1, 3, 6, 12, 24 h in recipients. The mRNA expression levels of CD14 and TLR4 in liver grafts were detected by using real-time RT-PCR. Results Under the condition of no significant difference in surgical factors, the plasma endotoxin levels in the portal vein of groups Ⅱ and Ⅲ were higher than in group Ⅰ , and reached the peak at the first h postoperation. The endotoxin levels in group Ⅱ were lower than in group Ⅲ. The endotoxin levels in sham-operation group were the highest. The mRNA expression levels of CD14 and TLR4 in groups Ⅰ, Ⅱ and Ⅲ were significantly increased as compared with sham-operation group (P＜0. 01). Conclusion There exists portal vein plasma endotoxima in 100 %, 50 % and 30 % orthotopic liver transplantation in the rats. The smaller the graft volume, the higher and longer plasma endotoxin in portal vein, so is the relative quantification of the TLR4 and CD14 mRNA in liver grafts.
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Objective To study the clinical characteristics and diagnosis of the solid-psendopapillary tumor of pancreas (SPT).Methods The clinical data of 40 SPT from January 1996 to January 2008 were retrospectively analyzed. The average age was (32.9 + 13.6 )years. The average clinical course was (8.6±0.1) months.Clinical symptoms usually included distensible pains and secret anguish in abdomen (60.0%).No jaundice appeared in any case.Results The surgical resection was favorable for the treatment of SPT,which had excellent prognosis.No tumor recurrence were found in those following-up patients. Grossly,the cut surface showed areas of solid and papillary tissue,cystic degeneration,hemorrhage,and necrosis.Pathological features included a combination of solid and cystic components with pseudopapillae formation and degenerative regions without glands.Conclusions SPT has its uniquely clinical and pathological characteristics.Its main diagnosed points are helpful for clinical doctors to make timely diagnosis and reduce the rate of misdiagnosis and mistreatment.
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Objective To summarize the clinical technique and experience of one stage combination of renopancreatic transplantation(SKPT) with portal venous drinage of pancreatic endocrine and enteric drainage of exocrine(PE).Methods Five patients with insulin-dependent diabetes mellitus and end-stage renal disease underwent SKPT with PE drainage.The clinical data,operative techbuque,and the prevention of non-technical complications were summarized.Results This procedure was successfully applied in the 5 patients.Three patients recovered excellently;but 2 died perioperatively,one died of sepsis due to pancreatic leakage,and one of FK506 toxicity.On postoperative day 3,in the 3 survivors,blood creatinine and urea nitrogen levels returned to normal;insulin administration was discontinued on 7d postoperatively,and the endogenous and exogenous secretory functions of the graft were normal.Conclusions SKPT with PE is a resonable procedure,because of its potential physiologic,metabolic,and immunologic advantages.PE drainage may become the prefer technique of pancreas transplantation.Intensive perioperative managements are effective methods to prevent complications and to improve the therapeutic effects.
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Objective To evaluate clinical effect of simultaneous kidney-pancreatic transplantation(SKPT) with portal venous and enteric drainage. Method Between June 2001 and June 2004, six insulin-dependent diabetes mellitus(IDDM) and renal failure patients underwent this procedure. The venous drainage of the graft was established between donor′s portal vein and recipient′s superior mesenteric vein. The exocrine secretion was drained into proximal jejunum via side-to-side anastomosis between donor′s duodenum and recipient′s proximal jejunum. Steroids, mycophenolate mofetil, tacrolimus and Zenapax were used as immunosuppressants. Results Procedures were successful in all 6 cases. Excellent renal function and euglycemia were achieved in 4 cases. Follow-up of 4-34 months on the 4 survivers found excellent kidney-pancreatic function without any rejection episode. Two patients died perioperatively due to sepsis secondary to pancreatic leakage and drug toxicosis of excessive FK506. Conclusion Our preliminary experience suggests that simultaneous pancreas-kidney transplantation with enteric and portal drainage is reliable procedure for the treatment of IDDM with renal failure.
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Objective To summarize the experience of rapid liver and kidney graft harvesting. Methods From Jan 2001 to Sep 2003,a quick procedure for combined liver and kidney procurement were used in 138 cases. The procedure includes in situ perfusion through aorta and superior mesenteric vein(SMV) plus drainage through inferior vena cava. Liver,pancreas,spleen and kidney were harvested en bloc. Results The warm ischemia time averaged at 2 to 6 minutes for kidneys and 3 to 8 minutes for livers. The total procurement time averaged at 20 to 30 minutes. All aberrant arteries were preserved. After transplantation there was no primary non-function in all 131 liver grafts,and the peak sALT level during the first 3 post-operative days was (581?392) U/L. Acute tubular necrosis rate was 3.3%(9/274) in renal grafts. Conclusion[WT5”BZ] This rapid procurement protects the quality of liver and kidney simultaneously. It is a simple,effective,safe and reasonably standardized procedure.