ObjectiveTo explore the value of duodenum-preserving pancreatic head resection for benign lesions in pancreatic head. MethodsClinical data of 14 patients with benign lesions in pancreatic head who were underwent duodenum-preserving pancreatic head resection from Jan. 1995 to Dec. 2012 were retrospectively analyzed, to explore the value of the surgery. ResultsAll surgeries of the 14 patients were success. The operation time were 4.0-6.5 hours (5.2 hours on average), the intraoperative blood loss were 100-1 000 mL (450 mL on average). Postoperative complications happened in 3 patients (21.4%), including pancreatic fistula in 2 patients and biliary fistula in 1 patient, which were cured with non-surgical treatment. No deaths happened during surgery and hospitalization. Of the 14 patients, 13 patients were followed-up for 6 months to 2 years with no recurrence, diabetes, postoperative gastric emptying disorders, and other long-term complications happened. ConclusionDuodenum-preserving pancreatic head resection is the safe and effective treatment of benign lesions in the head of pancreas.
【 Abstract 】 Objective Overexpressions of epidermal growth factor (EGF) and EGF receptor have been associated with progression and invasive phenotype of pancreatic cancer. However, the underlying molecular mechanism by which EGF worked in pancreatic cancer cells has not been completely understood. In this study, effect of EGF on the invasion and metastasis of pancreatic cancer cells and its regulatory mechanism were investigated. Methods The effects of EGF on the proliferation, adhesion and invasion of pancreatic cancer cells were detected by WST-1 proliferation assay, adhesion assay and invasive assay, respectively. The activity and expression of MMP-2 and MMP-9 were examined by zymography, Western blot and RT-PCR, respectively. The activity of NF- κ B was examined by EMSA. Results EGF could significantly promote the invasiveness of pancreatic cancer cells but did not affect cell proliferation or adhesion. The expressions of NF- κ B and MMP-9 were significantly increased by EGF, but EGF did not affect the activity and expression of MMP-2. Furthermore, EGF stimulated the NF- κ B binding activity. Pretreatment with NF- κ B inhibitors, pyrrolidine dithiocarbamate (PDTC), could significantly inhibit the activity of NF- κ B induced by EGF. Meanwhile, the EGF-induced expression and activity of MMP-9, as well as cell invasiveness were also inhibited by NF- κ B inhibitor. Conclusion EGF could increase the expression and promote the invasiveness of MMP-9 via the activation of NF- κ B in pancreatic cancer cells, which implies that NF- κ B inhibitant, such as PDTC, may diminish the invasiveness of pancreatic cancer cells.
目的总结胰腺血管活性肠肽瘤（VIPoma）的临床特点并探讨其诊治方法。 方法回顾性分析1991年11月至2010年2月期间我院收治的3例VIPoma患者的临床资料。 结果3例均有周期性发作水样泻、低钾血症和低或无胃酸。有2例血浆血管活性肠肽值显著升高。B超及CT发现3例肿瘤均位于胰腺内，其中1例肝转移，1例怀疑肝转移。3例均行手术治疗。1例肿瘤位于胰头部行胰十二指肠切除术，随访3年无肿瘤复发；1例肿瘤位于胰头颈部及肝脏多发转移灶，行胰腺头颈部切除及肝脏转移结节摘除术，术后4个月腹泻症状复发，证实肝脏多发转移灶，又先后3次手术，于第1次手术后3.5年死于电解质紊乱；另1例术中发现肿瘤位于胰头部无法切除，肝脏多发转移灶，摘除1枚肝脏结节病理确认为转移癌，术后间断应用奥曲肽，术后2.5年仍在随访中。 结论VIPoma首选的治疗方法是手术切除肿瘤。恶性肿瘤即使无法根治手术，也应该姑息性切除和间断应用奥曲肽，以改善患者生活质量。
【Abstract】ObjectiveTo evaluate the relationships between the transporters BSEP， MRP2， MDR3 and cholesterol calculus formation. MethodsTwenty hepatic tissue specimens were taken from consented patients with cholesterol calculus during intraoperative liver biopsy, of which ten were taken from patients without cholesterol calculus. RNA of liver tissue from all the samples was extracted and ultraviolet spectrophotometry was used to measure the content and purity of it. The mRNA and protein expressions of BSEP, MRP2 and MDR3 were determined by reverse transcriptionpolymerase chain reaction (RTPCR) and Western blot analysis, respectively. ResultsRTPCR showed that the mRNA expressions of BSEP, MRP2 and MDR3 in liver were significantly lower in patients with cholesterol calculus （0.47±0.18, 1.12±0.39 and 1.02±0.24） than those in the liver of patients without calculus （0.90±0.42, 2.48±0.89 and 1.94±0.80）,P＜0.01. And Western blot also showed the protein expressions of these transporters were significantly lower in patients with cholesterol calculus （90.16±18.82, 45.43±22.77 and 61.08±14.77） than those in the liver of patients without calculus (186.17±4.34, 160.47±30.19 and 100.84±15.44). ConclusionThe decreased expression of BSEP, MRP2 and MDR3 may correlate with the formation of cholesterol calculus.