Objective To study the perfusion imaging features of renal cell cancer(RCC) and their correlation with microvessel density(MVD) and vascular endothelial growth factor(VEGF) ex-pression status. Methods Dynamic contrast-enhanced multislice spiral CT was performed preopera-tively in 73 cases with histologically proven RCC (65 cases of clear cell carcinoma, 3 of papillary ade-nocarcinoma, and 5 of chromophobic carcinoma). Blood volume (BV), blood flow (BF), mean transit time (MTT), and permeability surface area product (PS) of tumors were recorded. MVD and VEGF expression status were studied by immunohistochemial staining. Results The mean BV, BF, MTT negative in 35 (47.9 %) cases, slightly positive in 24 (32.9 %) cases, moderate positive in 10 (13.7 %) cases, and intensively positive in 4 (5.5 %) cases. MVD of RCC was positively correlated with BV, BF and PS (P<0.01),and negatively correlated with MTT (P<0.05). No relationship was found be-tween the expression of VEGF and perfusion CT parameters. Conclusion Perfusion CT scan is use-ful to evaluate the angiogenesis status of RCC.

Objective To investigate clinical efficacy of Easy First strategy in laparoscopic pancreaticoduodenectomy (PD) for borderline resectable pancreatic cancer.Methods The clinical data of 9 patients with borderline resectable pancreatic cancer who were admitted to the Sir Run Run Shaw Hospital of Zhejiang University (8 patients) and Zhejiang Provincial People's Hospital (1 patient) from June 2013 to March 2015 were retrospectively analyzed.Nine patients underwent laparoscopic pancreaticoduodenectomy based on the Easy First strategy (to sequentially dissect and amputate jejunum,stomach,hepatoduodenal ligament,common bile duct,main portal vein,head of pancreas,second segment and third segment of the duodenum,uncinate process and neck of pancreas).The operation time,volume of intraoperative blood loss,postoperative pathological examination,complications and duration of hospital stay were recorded.Patients were followed up once every 3 months by outpatient examination and telephone interview up to June 2015.Results Of 9 patients,4 received totally laparoscopic PD (2 received partial resection and repair of portal venous wall),1 received laparoscopic assisted resection and digestive tract reconstruction,and 4 received laparoscopic transection of jejunum,bile tract and stomach and conversion to open surgery for resection and digestive tract reconstruction (1 with severe adhesion between tumor and portal vein,3 with bleeding due to dissection of neck and unciform process of pancreas).The operation time and volume of intraoperative blood loss in all patients and in 4 patients with totally laparoscopic PD were (404 ± 49) minutes and (456 ± 348) mL,(395 ± 61) minutes and (188 ± 25) mL,respectively.Of 9 patients,5 with postoperative complications were cured without perioperative death,including 2 with Grade B pancreatic fistula,1 with biliary leakage,1 receiving reoperation due to gastric stump bleeding at postoperative day 7 and 1 with abdominal infection.The extubation time of right drainage tube and left drainage tube was (9 ± 5) days and (11 ± 4) days,respectively.The duration of hospital stay was (24 ± 10)days.All patients were diagnosed as with pancreatic cancer by pathological examinations with the tumor diameter of (3.2 ± 0.8) cm.The number of harvested lymph nodes in all patients and in 4 patients with totally laparoscopic PD were 16.8 (range,6.0-25.0) and 19.8 (range,15.0-25.0).All the patients were followed up for mean time of 12 months (range,4-24 months),including 1 death at postoperative month 3,1 with tumor survival of 20 months and others with tumor-free survival.The postoperative survival time of 4 patients was more than 18 months at the end of follow-up.Conclusion Easy First strategy in laparoscopic PD is safe,feasible and practical for borderline resectable pancreatic cancer.

OBJECTIVETo evaluate the feasibility and safety of laparoscopic pancreaticoduodenectomy(LPD).

METHODSData of 66 patients from Sir Run Run Shaw Hospital undergoing LPD from September 2012 to September 2014 were reviewed. There were 44 male and 22 female with the mean age of (58.7±10.3) years and mean body mass index of (23.5±3.9)kg/m(2). Forty-five patients presented the symptoms and four of all had the history of abdominal surgery, including 2 cases of laparoscopic pancreatic surgery.

RESULTSOf 66 patients underwent laparoscopic procedure, 1 patient underwent LPD combined with right hepatic resection, 1 patient underwent laparoscopic distal gastrectomy with LPD, and 1 patient underwent LPD after laparoscopic distal pancreatectomy. The mean operative time was (367±49) minutes. The mean blood loss was(193±126)ml. The rate of overall postoperative complications was 36.4%(24/66), with 4.5%(3/66) of B or C pancreatic fistula and 7.6% (5/66) of bleeding. The mean postoperative hospital stay was (18.9±12.1) days. Mean tumor size was (3.8±2.3) cm, and the mean number of lymph nodes harvested was (20.3±10.9). Forty-severn patients were diagnosed as pancreatic adenocarcinoma(n=18), cholangiocarcinoma(n=7), ampullary adenocarcinoma(n=21), and gastric cancer(n=1), respectively.

CONCLUSIONLPD is feasible and safe under the skilled hand.

Adenocarcinoma ; surgery ; Aged ; Anastomosis, Surgical ; Female ; Humans ; Laparoscopy ; Length of Stay ; Male ; Middle Aged ; Operative Time ; Pancreatectomy ; Pancreatic Fistula ; pathology ; Pancreatic Neoplasms ; surgery ; Pancreaticoduodenectomy ; Postoperative Complications

Objective:To investigate the clinical efficacy of modified biliary-intestinal anasto-mosis by pancreaticoduodenectomy and influencing factors of postoperative biliary leakage.Methods:The propensity score matching and retrospective cohort study was conducted. The clinicopatholo-gical data of 165 patients with benign and malignant diseases around the ampullary who underwent pancreaticoduodenectomy in the Affiliated Hospital of Inner Mongolia Medical University from June 2014 to October 2020 were collected. There were 92 males and 73 females, aged (59±10)years. Of the 165 patients, 44 patients undergoing modified biliary-intestinal anastomosis within pancreatico-duodenectomy were divided into the modified group, and 121 patients undergoing traditional biliary-intestinal anastomosis within pancreaticoduodenectomy were divided into the traditional group. Observation indicators: (1) propensity score matching and comparison of general data of patients between the two groups after matching; (2) intraoperative and postoperative situations; (3) analysis of influencing factors of biliary leakage after pancreaticoduodenectomy. Propensity score matching was done by the 1:1 nearest neighbor matching method, with the caliper setting as 0.05. Measurement data with normal distribution were represented as Mean± SD, and comparison between groups was conducted using the t test. Measurement data with skewed distribution were represented as M( Q1, Q3), and comparison between groups was conducted using the Mann-Whitney U test. Count data were described as absolute numbers, and comparison between groups was conducted using the chi-square test or Fisher exact probability. Univariate analysis was conducted using the corresponding statistical methods based on data type. All indicators in univariate analysis were included in multivariate analysis. Multivariate analysis was conducted using the Logistic regression model. Results:(1) Propensity score matching and comparison of general data of patients between the two groups after matching. Of the 165 patients, 72 cases were successfully matched, including 36 cases in the modified group and 36 cases in the traditional group, respectively. The elimination of jaundice, preoperative reduction of jaundice and hypertension confounding bias ensured comparability between the two groups after propensity score matching. (2) Intraoperative and postoperative situations. All patients in the two groups underwent surgery successfully. The operation time, postoperative pathological type (lower bile duct cancer, pancreatic head cancer, pancreatic cystic tumor, chronic pancreatitis, duodenal cancer), time of no drainage fluid in the drainage tube around biliary-intestinal anastomosis were 371(270,545)minutes, 6, 12, 1, 2, 15, (12±7)days in patients of the modified group, versus 314(182,483) minutes, 13, 14, 1, 4, 4, (16±8)days in patients of the traditional group, showing significant differences in the above indicators between the two groups ( Z=-3.54, χ2=10.01, t=-2.34, P<0.05). Cases with postoperative grade A biliary leakage was 0 in patients of the modified group, versus 6 in patients of the traditional group, showing a significant difference between the two groups ( P<0.05). Cases with postoperative grade B biliary leakage, cases with postoperative grade B pancreatic fistula, cases with postoperative bleeding, cases with abdominal infection, cases with incision infection, cases with delayed gastric emptying, cases undergoing unplanned readmission were 1, 0, 1, 4, 1, 5, 1 in patients of the modified group, versus 0, 1, 2, 5, 2, 5, 2 in patients of the traditional group, showing no significant difference in the above indicators between the two groups ( P>0.05). Cases with postoperative grade A pancreatic fistula, cases with overall complications, cases with Clavien-Dindo grade Ⅰ-Ⅱ complications, cases with Clavien-Dindo grade Ⅲ-Ⅳ complications were 6, 12, 6, 6 in patients of the modified group, versus 7, 14, 8, 6 in patients of the traditional group, showing no significant difference in the above indicators between the two groups ( χ2=0.09, 0.24, 0.36, 0.00, P>0.05). None of patient in the two groups had postoperative grade C biliary leakage and postoperative grade C pancreatic fistula. (3) Analysis of influencing factors of biliary leakage after pancreaticoduodenectomy. Results of multivariate analysis showed that preoperative reduction of jaundice and traditional biliary-intestinal anastomosis were independent risk factors for biliary leakage after pancreaticoduodenectomy ( odds ratio=11.37, 12.27, 95% confidence interval as 1.76-73.35, 1.14-131.23, P<0.05). Conclusions:Compared with traditional biliary-intestinal anastomosis, modified biliary-intestinal anastomosis within pancreaticoduodenectomy is safe and feasible. Preoperative reduction of jaundice and traditional biliary-intestinal anastomosis are independent risk factors for biliary leakage after pancreaticoduodenectomy.

Acyl-CoA synthetase long chain family member 5 (ACSL5), is a member of the acyl-CoA synthetases (ACSs) family that activates long chain fatty acids by catalyzing the synthesis of fatty acyl-CoAs. The dysregulation of ACSL5 has been reported in some cancers, such as glioma and colon cancers. However, little is known about the role of ACSL5 in acute myeloid leukemia (AML). We found that the expression of ACSL5 was higher in bone marrow cells from AML patients compared with that from healthy donors. ACSL5 level could serve as an independent prognostic predictor of the overall survival of AML patients. In AML cells, the ACSL5 knockdown inhibited cell growth both in vitro and in vivo. Mechanistically, the knockdown of ACSL5 suppressed the activation of the Wnt/β-catenin pathway by suppressing the palmitoylation modification of Wnt3a. Additionally, triacsin c, a pan-ACS family inhibitor, inhibited cell growth and robustly induced cell apoptosis when combined with ABT-199, the FDA approved BCL-2 inhibitor for AML therapy. Our results indicate that ACSL5 is a potential prognosis marker for AML and a promising pharmacological target for the treatment of molecularly stratified AML.
Humans ; Antineoplastic Agents/therapeutic use* ; Apoptosis ; beta Catenin/metabolism* ; Biomarkers, Tumor/metabolism* ; Cell Line, Tumor ; Coenzyme A Ligases/metabolism* ; Leukemia, Myeloid, Acute/metabolism* ; Lipoylation ; Prognosis ; Wnt Signaling Pathway