Objective To investigate the inhibitory effects of RNA interference (RNAi) expression vector on the expression of survivin in pancreatic cancer cell PANC-1. Methods The protein and mRNA expressions of survivin were examined with immunofluorescence and RT-PCR. The survivin gene was cloned into the T-vector and sequenced. The RNAi expression vectors targeting survivin, named si-svv-1 and si-svv-2 respectively according to whether they harbored a mutation or no mutation, were constructed and transfected into PANC-1 cells with liposome. The expression of survivin mRNA was detected with RT-PCR. Apoptosis of PANC-1 cells was analyzed with DNA ladder and FACS. Results There was a high degree expression of survivin in PANC-1 cells. The expression of survivin was not inhibited by RNAi expression vectors si-svv-1, but inhibited about (72.43±8.04)% by si-svv-2 and the apoptosis rate of PANC-1 cells increased to （12.36±1.44）% after 72 h. Conclusion The RNAi expression vector can effectively inhibit the expression of survivin in pancreatic cancer cell PANC-1 cells and induce the apoptosis in PANC-1 cells.
Objective To evaluate the activity of the pancreatic tissue phospholipase A2 (PLA2) in acute pancreatitis (AP) and the therapeutic effects of verapamil in rats. MethodsThe model of rat AP induced by a closed duodenal loop technique was established to observe the changes of PLA2 activity in AP group and treated group. The pancreatic histology was examined by light and electron microscopy. Results At 16 and 24 hours after induction of AP in rats, significant inhibition of the pancreatic tissue PLA2 activity was shown in the treated group as compared with AP group, with 32.34±3.87u, 35.26±4.52u and 44.83±5.31u, 47.77±5.86u respectively. The treated animals also showed a decrease in the severity of pancreatic hemorrhage, necrosis and damage to the cellular ultrastructures. Conclusion There exists high activity of PLA2 in rats AP. Calcium channel blocker, verapamil might take therapeutic effects on AP by inhibiting activity of PLA2.
ObjectiveTo explore the correlation of serum lipocalin-2 (LCN2) with inflammation and the predictive value of LCN2 for detecting acute kidney injury (AKI) in acute pancreatitis (AP).MethodsNighty-one patients with AP, who were admitted to Bazhong Municipal Hospital of Traditional Chinese Medicine between June 2016 and June 2018, were enrolled in the present study. Clinical paramaters were analyzed between patients with AKI (n=29) and patients without AKI (n=62). The correlation of serum LCN2 with inflammation was assessed with Pearson’s correlation analysis. The area under the receiver operating characteristic curve (ROC AUC) for serum LCN2 predicting AKI in AP patients was assessed.ResultsCompared with the patients without AKI, the patients with AKI showed increased serum levels of C-reactive protein [(64.8±10.5) vs. (148.3±21.6) mg/L], procalcitonin [(3.5±2.3) vs. (4.8±3.9) μg/L], urea nitrogen [(5.5±2.1) vs. (6.6±2.8) mmol/L], creatinine [(80.3±28.1) vs. (107.3±30.8) μmol/L], interleukin-6 [(10.1±3.7) vs. (16.2±4.6) pg/mL], and LCN2 [(155.0±37.6) vs. (394.8±53.1) mg/mL], as well as decreased level of calcium [(2.6±1.3) vs. (2.0±1.0) mmol/L], the differences were all statistically significant (P<0.05). The serum level of LCN2 was correlated with C-reactive protein (r=0.694, P<0.05), interleukin-6 (r=0.762, P<0.05), and procalcitonin (r=0.555, P<0.05) in patients with AP. The ROC AUC of LCN2 for predicting AKI was 0.844 (P<0.05) , with a sensitivity of 81.3% and a specificity of 81.4% when the cut-off value was 210.2 ng/mL.ConclusionsSerum LCN2 concentration is elevated in patients with AKI. In patients with AP, serum LCN2 level is positively correlated with C-reactive protein, interleukin-6, and procalcitonin. It can be regarded as a reliable indicator for predicting AKI.
Objective To evaluate the effect of early clinical interference strategies on preventing the conversion of acute pancreatitis to the severe form and aggravation of severe acute pancreatitis (SAP). Methods The patients with acute pancreatitis admitted to this hospital were divided into two therapeutic phases by different therapeutic methods from January 2001 to December 2008. Patients in the first phase (from January 2001 to December 2004) were treated by the routine management, and the second phase (from January 2005 to December 2008) by the routine management combined with early clinical interference strategies. Then, the ratio of conversion from acute pancreatitis to SAP and prognosis of SAP between two phases were compared. Results Compared with the first phase, the rate of aggravation of acute pancreatitis was significantly decreased in the second phase (4.48% vs. 21.18%), the average healing time of SAP, the incidences of systemic and local complications and the mortality of pancreatitis were reduced (P＜0.05). When early clinical interference strategies were performed, some adverse reaction and complications occurred in 35 cases, but without severe consequence. Conclusion Early clinical interference strategies may serve as a beneficial strategy on preventing the progression of mild acute pancreatitis to the severe form or halting the aggravation of acute pancreatitis.
ObjectiveTo investigate the relation between disulfidptosis-related genes (DRGs) and prognosis or immunotherapy response of patients with pancreatic cancer (PC). MethodsThe transcriptome data, somatic mutation data, and corresponding clinical information of the patients with PC in The Cancer Genome Atlas (TCGA) were downloaded. The DRGs mutated in the PC were screened out from the 15 known DRGs. The DRGs subtypes were identified by consensus clustering algorithm, and then the relation between the identified DRGs subtypes and the prognosis of patients with PC, immune cell infiltration or functional enrichment pathway was analyzed. Further, a risk score was calculated according to the DRGs gene expression level, and the patients were categorized into high-risk and low-risk groups based on the mean value of the risk score. The risk score and overall survival of the patients with high-risk and low-risk were compared. Finally, the relation between the risk score and (or) tumor mutation burden (TMB) and the prognosis of patients with PC was assessed. ResultsThe transcriptome data and corresponding clinical information of the 177 patients with PC were downloaded from TCGA, including 161 patients with somatic mutation data. A total of 10 mutated DRGs were screened out. Two DRGs subtypes were identified, namely subtype A and subtype B. The overall survival of PC patients with subtype A was better than that of patients with subtype B (χ2=8.316, P=0.003). The abundance of immune cell infiltration in the PC patients with subtype A was higher and mainly enriched in the metabolic and conduction related pathways as compaired with the patients with subtype B. The mean risk score of 177 patients with PC was 1.921, including 157 cases in the high-risk group and 20 cases in the low-risk group. The risk score of patients with subtype B was higher than that of patients with subtype A (t=14.031, P<0.001). The overall survival of the low-risk group was better than that of the high-risk group (χ2=17.058, P<0.001), and the TMB value of the PC patients with high-risk was higher than that of the PC patients with low-risk (t=5.642, P=0.014). The mean TMB of 161 patients with somatic mutation data was 2.767, including 128 cases in the high-TMB group and 33 cases in the low-TMB group. The overall survival of patients in the high-TMB group was worse than that of patients in the low-TMB group (χ2=7.425, P=0.006). ConclusionDRGs are closely related to the prognosis and immunotherapy response of patients with PC, and targeted treatment of DRGs might potentially provide a new idea for the diagnosis and treatment of PC.
Ａ ｒｅｖｉｅｗ ｏｆ ｐａｔｉｅｎｔｓ ｗｉｔｈ ａｃｕｔｅ ｐａｎｃｒｅａｔｉｔｉｓ ｔｒｅａｔｅｄ ｉｎ ｔｈｉｓ ｈｏｓｐｉｔａｌ ｉｎ ｒｅｃｅｎｔ １０ ｙｅａｒｓ ｗａｓ ｍａｄｅ．Ｔｏ ｄｅｔｅｒｍｉｎｅ ｔｈｅ ｒｉｓｋ ｆａｃｔｏｒｓ ｏｆ ｓｅｐｔｉｃ ｎｅｃｒｏｓｉｓ ｉｎ ａｎｄ ａｒｏｕｎｄ ｔｈｅ ｐａｎｃｒｅａｓ，３２ ｃａｓｅｓ ｗｉｔｈ ｓｅｐｔｉｃ ｎｅｃｒｏｓｉｓ ｗｈｉｃｈ ｗｅｒｅ ｐｒｏｖｅｄ ｉｎ ｓｕｒｇｉｃａｌ ｏｐｅｒａｔｉｏｎ ａｎｄ ４４ ｃａｓｅｓ ｗｉｔｈｏｕｔ ｓｅｐｔｉｃ ｎｅｃｒｏｓｉｓ（ａｓ ｃｏｎｔｒｏｌ）ｗｅｒｅ ｉｎｃｌｕｄｅｄ ｉｎ ｔｈｉｓ ｓｔｕｄｙ．Ｔｈｅ ｐｏｓｓｉｂｌｅ ｆａｃｔｏｒｓ ｗｅｒｅ ｃｏｍｐａｒａｔｉｖｅｌｙ ａｎａｌｙｓｅｄ．Ｔｈｅ ｒｅｓｕｌｔｓ ｓｈｏｗｅｄ ｔｈａｔ ｓｅｐｔｉｃ ｎｅｃｒｏｓｉｓ ｉｎ ａｎｄ ａｒｏｕｎｄ ｔｈｅ ｐａｎｃｒｅａｓ ｏｂｖｉｏｕｓｌｙ ｒｅｌａｔｅｄ ｔｏ ｔｈｅ ｄｉａｇｎｏｓｔｉｃ ｏｒ ｔｈｅｒａｐｅｕｔｉｃ ｐｕｎｃｔｕｒｅｓ，ｅａｒｌｙ ｓｕｒｇｉｃａｌ ｄｒａｉｎａｇｅ ａｎｄ ｐａｒａｌｙｔｉｃ ｉｌｅｕｓ（ＯＲ ３０２－５４８，Ｐ＜００５)，ｂｕｔ ｔｈｅｒｅ ｗｅｒｅ ｎｏ ａｓｓｏｃｉａｔｉｏｎｓ ｗｉｔｈ ａｇｅ，ｅｔｉｏｌｏｇｙ，ｓｈｏｃｋ，ｒｅｓｐｉｒａｔｏｒｙ ｆａｉｌｕｒｅ ａｎｄ ｔｏｔａｌ ｐａｒｅｎｔｅｒａｌ ｎｕｔｒｉｔｉｏｎ（ＯＲ ０７８－１２６，Ｐ＞００５）．Ｔｈｅ ａｕｔｈｅｒｓ ｓｕｇｇｅｓｔ ｔｈａｔ ｅｉｔｈｅｒ ｐａｎｃｒｅａｔｉｃ，ｐｅｒｉｐａｎｃｒｅａｔｉｃ ｐｕｎｃｔｕｒｅ ｏｒ ｅａｒｌｙ ｓｕｒｇｉｃａｌ ｄｒａｉｎａｇｅ ｓｈｏｕｌｄ ｂｅ ｌｉｍｉｔｅｄ ａｎｄ ａｎｙ ｍｅｄｉｃａｔｉｏｎ ｗｈｉｃｈ ｍａｋｅｓ ｐａｒａｌｙｔｉｃ ｉｌｅｕｓ ｄｅｔｅｒｉｏｒａｔｅｄ ｓｕｃｈ ａｓ ａｔｒｏｐｉｎｅ ｓｈｏｕｌｄ ｂｅ ａｖｏｉｄｅｄ ｉｎ ｔｈｅ ｔｒｅａｔｍｅｎｔ ｏｆ ａｃｕｔｅ ｐａｎｃｒｅａｔｉｔｉｓ．
ObjectiveTo summarize the application of magnetic resonance imaging (MRI) in the evaluation of pancreatic exocrine function.MethodIn this paper, we reviewed and summarized the related literatures about the application of MRI in the field of pancreatic exocrine function evaluation in recent years.ResultsA variety of MRI techniques could be used to detect the pancreatic exocrine function. In addition to conventional MRI techniques, there were also MRI stimulated by pancreatic secretions, cine (dynamic) cholangiopancreatography based on space selective reverse recovery pulse, and so on.ConclusionThe new MRI techniques have potential for semi-quantitative and quantitative evaluation of pancreatic exocrine function.
Objective To study the influence factors of surgical site infection (SSI) after hepatobiliary and pancreatic surgery. Methods Fifty patients suffered from SSI after hepatobiliary and pancreatic surgery who treated in Feng,nan District Hospital of Tangshan City from April 2010 and April 2015 were retrospectively collected as observation group, and 102 patients who didn’t suffered from SSI after hepatobiliary and pancreatic surgery at the same time period were retrospectively collected as control group. Then logistic regression was performed to explore the influence factors of SSI. Results Results of univariate analysis showed that, the ratios of patients older than 60 years, combined with cardiovascular and cerebrovascular diseases, had abdominal surgery history, had smoking history, suffered from the increased level of preoperative blood glucose , suffered from preoperative infection, operative time was longer than 180 minutes, American Societyof Anesthesiologists (ASA) score were 3-5, indwelled drainage tube, without dressing changes within 48 hours after surgery, and new injury severity score (NISS) were 2-3 were higher in observation group (P＜0.05). Results of logistic regression analysis showed that, patients had history of abdominal surgery (OR=1.92), without dressing changes within 48 hours after surgery (OR=2.07), and NISS were 2-3 (OR=2.27) had higher incidence of SSI (P＜0.05). Conclusion We should pay more attention on the patient with abdominal surgery history and with NISS of 2-3, and give dressing changes within 48 hours after surgery, to reduce the incidence of SSI.
【Abstract】Objective To study the change of pancreatic microcirculation in the early phase of acute pancreatitis. MethodsLiteratures on acute pancreatitis and microcirculation were collected and reviewed.ResultsPancreatic microcirculation has changed in the early phase of acute pancreatitis, including contraction of interlobular arteriole, slowing of blood fluid, increasing of pancreatic vascular permeability, leukocyte adherence in postcapillary venules, and decreasing of pancreatic perfusion.Conclusion Impairment of pancreatic microcirculation in the early phase of acute pancreatitis may play a key role in the progression of this disease.