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Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status

Li Jiang, Deng Ning, Xiaoping Chen

《医学前沿（英文）》 2020年第14卷第3期页码 251-261 doi: 10.1007/s11684-019-0727-3

摘要： Postoperative pancreatic fistula (POPF) is the most common and critical complication after pancreatic body and tail resection. How to effectively reduce the occurrence of pancreatic fistula and conduct timely treatment thereafter is an urgent clinical issue to be solved. Recent research standardized the definition of pancreatic fistula and stressed the correlation between POPF classification and patient prognosis. According to the literature, identification of the risk factors for pancreatic fistula contributed to lowering the rate of the complication. Appropriate management of the pancreatic stump and perioperative treatment are of great significance to reduce the rate of POPF in clinical practice. After the occurrence of POPF, the treatment of choice should be determined according to the classification of the pancreatic fistula. However, despite the progress and promising treatment approaches, POPF remains to be a clinical issue that warrants further studies in the future.

关键词： pancreatic fistula pancreatic body and tail resection distal pancreatectomy

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Laparoscopic surgery for pancreatic lesions: current status and future

Taiping Zhang, Xiao Du, Yupei Zhao

《医学前沿（英文）》 2011年第5卷第3期页码 277-282 doi: 10.1007/s11684-011-0147-5

摘要： Laparoscopic pancreatic surgery has been gaining increasing recognition in recent years, and its practice has increased despite its highly complex procedure and longer learning curve compared with surgeries for other abdominal organs. Laparoscopic distal pancreatectomy and tumor enucleation are two of the fastest-growing techniques and are currently in wide use because of their comparable technical simplicity. Literature review showed that laparoscopic distal pancreatectomy and enucleation are safe and efficient approaches for benign and low-degree malignant tumors; however, the indication for malignant tumors remains controversial. Laparoscopic pancreaticoduodenectomy is practiced in a limited number of surgical centers and presented as case reports or in small series. Although its feasibility was demonstrated by many surgeons, whether the laparoscopic procedure can achieve benefits comparable to or even more prominent than those of an open procedure has not been clinically proven. Prospective, randomized, controlled trials of laparoscopic operation versus open pancreatic surgery are necessary to justify the wide application and routine practice of the laparoscopic procedure for pancreatic lesions.

关键词： minimally invasive surgery pancreatic surgery pancreatic neoplasm distal pancreatic lesions pancreatic fistula

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Adjuvant treatment strategy after curative resection for hepatocellular carcinoma

Wei Zhang, Bixiang Zhang, Xiao-ping Chen

《医学前沿（英文）》 2021年第15卷第2期页码 155-169 doi: 10.1007/s11684-021-0848-3

摘要： Hepatic resection represents the first-line treatment for patients with resectable hepatocellular carcinoma (HCC). However, the 5-year recurrence rates of HCC after surgery have been reported to range from 50% to 70%. In this review, we evaluated the available evidence for the efficiency of adjuvant treatments to prevent HCC recurrence after curative liver resection. Antiviral therapy has potential advantages in terms of reducing the recurrence rate and improving the overall survival (OS) and/or disease-free survival of patients with hepatitis-related HCC. Postoperative adjuvant transarterial chemoembolization can significantly reduce the intrahepatic recurrence rate and improve OS, especially for patients with a high risk of recurrence. The efficacy of molecular targeted drugs as an adjuvant therapy deserves further study. Adjuvant adoptive immunotherapy can significantly improve the clinical prognosis in the early stage. Randomized controlled trial (RCT) studies evaluating adjuvant immune checkpoint inhibitors are ongoing, and the results are highly expected. Adjuvant hepatic artery infusion chemotherapy might be beneficial in patients with vascular invasion. Huaier granule, a traditional Chinese medicine, has been proved to be effective in prolonging the recurrence-free survival and reducing extrahepatic recurrence. The efficiency of other adjuvant treatments needs to be further confirmed by large RCT studies.

关键词： hepatocellular carcinoma adjuvant treatment hepatic resection recurrence

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The role of prophylactic transpapillary pancreatic stenting in distal pancreatectomy: a meta-analysis

null

《医学前沿（英文）》 2013年第7卷第4期页码 499-505 doi: 10.1007/s11684-013-0296-9

摘要：

Pancreatic fistula (PF) is the most frequent complication after distal pancreatectomy (DP). Prophylactic transpapillary pancreatic stenting (PTPS) has been proposed recently for the prevention of PF after DP. In this meta-analysis, a comprehensive search was performed in the PubMed, Embase, and Cochrane Library databases. Studies analyzing the results of PTPS in DP were considered eligible for this meta-analysis. The analyzed outcome variables included PF rate, postoperative morbidity, non-PF-related complications, mortality, operation duration, and hospital stay. Four studies with 200 patients were included in this review. Only one was a randomized controlled trial (RCT). The results showed that PTPS was associated with less PF formation (odds ratio, 0.45; 95% confidence interval [CI], 0.22–0.94; P = 0.03) and shorter hospital stay (mean difference, -6.31; 95% CI, -6.99 to -5.62; P<0.00001). There was no significant difference in terms of the other variables. In conclusion, current evidence indicates that PTPS could reduce PF incidence and hospital stay after DP, without increasing other complications or operative time. However, the evidence is not solid, because the single RCT conflicted with the other three retrospective reports. Thus, considering the limitation, more well-designed RCTs on this topic are needed in the future.

关键词： pancreatic fistula distal pancreatectomy pancreatic stent meta-analysis

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loaded natural extracellular matrix hydrogel for inhibition of glioblastoma recurrence after tumor resection

《化学科学与工程前沿（英文）》 2022年第16卷第4期页码 536-545 doi: 10.1007/s11705-021-2067-5

摘要： Many scientific efforts have been made to penetrate the blood-brain barrier and target glioblastoma cells, but the outcomes have been limited. More attention should be given to local inhibition of recurrence after glioblastoma resection to meet real medical needs. A biodegradable wafer containing the chemotherapeutics carmustine (1,3-bis(2-chloroethyl)-1-nitrosourea, BCNU) was the only local drug delivery system approved for clinical glioblastoma treatment, but with a prolonged survival time of only two months and frequent side effects. In this study, to improve the sustained release and prolonged therapeutic effect of drugs for inhibiting tumor recurrence after tumor resection, both free BCNU and BCNU- poly (lactic-co-glycolic acid) (the ratio of lactic acid groups to glycolic acid groups is 75/25) nanoparticles were simultaneously loaded into natural extracellular matrix hydrogel from pigskin to prepare BCNU gels. The hydrogel was injected into the resection cavity of a glioblastoma tumor immediately after tumor removal in a fully characterized resection rat model. Free drugs were released instantly to kill the residual tumor cells, while drugs in nanoparticles were continuously released to achieve a continuous and effective inhibition of the residual tumor cells for 30 days. These combined actions effectively restricted tumor growth in rats. Thus, this strategy of local drug implantation and delivery may provide a reliable method to inhibit the recurrence of glioblastoma after tumor resection in vivo.

关键词： BCNU glioblastoma recurrence tumor resection nanoparticles hydrogel

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Influence of the adjuvant therapy on the survival of patients with stage II pancreatic carcinoma

Xi-Yan WANG, Hai-Jun LI, Dong YAN, Hao WEN, Shu-Yong PENG,

《医学前沿（英文）》 2010年第4卷第4期页码 430-435 doi: 10.1007/s11684-010-0700-7

摘要： This study aimed to investigate the effect of adjuvant therapy on the treatment of stage II pancreatic carcinomas. The clinical data of 139 cases of stage II pancreatic carcinoma were analyzed retrospectively. The overall 1-, 3-, and 5-year cumulative survival rates of 139 patients were 40%, 6%, and 3%, respectively, and the median survival time (MST) was 279 days. The MST was 399 days for those with adjuvant therapy, 210 days for those without adjuvant therapy, 390 days for the radical resection group, 270 days for the bypass operation and laparotomy group, and 132 days for the nonsurgical group. The adjuvant therapy could not prolong the survival time and decrease the liver metastasis rate of the patients with stage II carcinoma significantly in radical resection group (>0.05). In the bypass operation and laparotomy group and nonsurgical group, the adjuvant therapy could improve the survival of the patients significantly (<0.05); however, the survival rate was not significantly different among systemic venous chemotherapy, radiation therapy, interventional therapy, and combination therapy (>0.05); or between gemcitabine (GEM) regimen and 5-fluorouracil regimen (>0.05); or between GEM monotherapy and GEM combined with platinum/capecitabine (>0.05). The proper adjuvant therapy can be suggested according to the general condition of the patients after radical resection for stage II pancreatic carcinoma. Chemotherapy combined with radiation should be applied actively for the patients whose cancerous tissues were not radically resected. The clinical efficacy of GEM combined with platinum/capecitabine is relatively better than GEM.

关键词： pancreatic neoplasms neoadjuvant therapy survival

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Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

《能源前沿（英文）》 2012年第6卷第4期页码 361-365 doi: 10.1007/s11708-012-0210-1

摘要： This paper describes an innovative method of using a non-buoyant body to harness ocean waves. All the point absorbers are buoyant in nature and move up due to buoyancy and come down because of gravity. The point absorbers are designed to move along the waves to make the device efficient. These devices face excessive stress during the rough weather on account of the extreme motion of waves and cause the total device failure. The present study shows that using a non-buoyant body for conventional point absorber principle is much efficient and safer than any other device proposed till today. A small scale wave energy converter with non-buoyant body was designed, fabricated and tested in small scale wave maker. An electrical generator was coupled with the device to generate electrical energy from harnessed waves. The generator was electrically loaded and the generated power was measured. It was found from the experiments that the proposed device showed a significant improvement in electricity generation and safety during extreme conditions. In addition to the electricity generation, the characteristics of the device were also studied by using various wave and device parameters.

关键词： ocean wave energy point absorbers heaving body non-floating object heave response ratio electrical energy generation

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Analysis of 100 consecutive cases of resectable pancreatic neuroendocrine neoplasms: clinicopathological

null

《医学前沿（英文）》 2016年第10卷第4期页码 444-450 doi: 10.1007/s11684-016-0471-x

摘要：

The incidence rate of pancreatic neuroendocrine neoplasms (pNENs) has increased rapidly in recent years. However, the clinicopathological characteristics of pNENs are poorly understood. Medical records of patients who underwent surgery and were confirmed as pNENs by pathological examination from January 2003 to February 2015 in Qilu Hospital were reviewed retrospectively. A total of 100 patients, 36 males and 64 females, were included with a mean operation age of 46.26±13.41 years. Among the 100 cases, 76 had insulinomas and 24 had non-functional pNENs. Tumor size ranged from 0.5 cm to 9 cm, and the mean size was 2.20±1.40 cm. The percentages of TNM stages I, II, III, and IV tumors were 89.0%, 8.0%, 0.0%, and 3.0%, respectively. Based on the WHO classification, pNENs were classified into three grades: G1, G2, and G3. G1, G2, and G3 tumors were confirmed in 72.9%, 23.7%, and 3.4% patients, respectively. The positive rates of CgA and Syn immunohistochemical staining were 94.5% (69/73) and 100% (74/74), respectively. Compared with insulinoma, non-functional pNENs have larger tumor sizes, more advanced TNM staging, a higher Ki-67 index, and a higher rate of liver metastasis (P<0.05). In conclusion, pNENs are heterogeneous tumors with varying clinical manifestations, diverse tumor biological characteristics, and different prognoses. Non-functional pNENs present a more aggressive behavioral model and have poorer prognosis than functional pNENs.

关键词： pancreatic neuroendocrine neoplasms clinicopathological characteristic Ki-67 liver metastasis outcomes

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Lightweight design of an electric bus body structure with analytical target cascading

《机械工程前沿（英文）》 2023年第18卷第1期 doi: 10.1007/s11465-022-0718-y

摘要： Lightweight designs of new-energy vehicles can reduce energy consumption, thereby improving driving mileage. In this study, a lightweight design of a newly developed multi-material electric bus body structure is examined in combination with analytical target cascading (ATC). By proposing an ATC-based two-level optimization strategy, the original lightweight design problem is decomposed into the system level and three subsystem levels. The system-level optimization model is related to mass minimization with all the structural modal frequency constraints, while each subsystem-level optimization model is related to the sub-structural performance objective with sub-structure mass constraints. To enhance the interaction between two-level systems, each subsystem-level objective is reformulated as a penalty-based function coordinated with the system-level objective. To guarantee the accuracy of the model-based analysis, a finite element model is validated through experimental modal test. A sequential quadratic programming algorithm is used to address the defined optimization problem for effective convergence. Compared with the initial design, the total mass is reduced by 49 kg, and the torsional stiffness is increased by 17.5%. In addition, the obtained design is also validated through strength analysis.

关键词： electric vehicle body in white (BIW) lightweight analytical target cascading (ATC)

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Laparoscopic hepato-biliary-pancreatic surgery: present practices and prospects

Yongjun Chen, Renyi Qin, Xiaoping Chen

《医学前沿（英文）》 2011年第5卷第3期页码 235-238 doi: 10.1007/s11684-011-0156-4

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Potential indicators predict progress after surgical resection of gastrointestinal stromal tumors

null

《医学前沿（英文）》 2012年第6卷第3期页码 317-321 doi: 10.1007/s11684-012-0203-9

摘要：

In order to find out the potential indicators predicting prognosis of malignant gastrointestinal stromal tumors (GISTs) after surgical resection, we collected clinical records of 80 patients with malignant GISTs. Tumor location, size, mitotic index, necrosis were compared with the prognosis of malignant GISTs by Kaplan-Meier method and log-rank test. After a median follow-up of 844 days (52–2 145), we found that as National Institutes of Health suggested, tumors with intermediate risk had more favorable prognosis than that with high risk. Their 3-year survival rate were 65.3% and 41.3%, respectively (P<0.001). Moreover, tumor size and mitotic index were associated with free survival. The 3-year survival rate for patients with tumor size≤10 cm and>10 cm were 62.3% and 41.8%, respectively (P = 0.002), Tumors with mitotic index≤5/50 HPF had a higher 3-year survival rate than tumors with mitotic index>5/50 HPF (67.1% versus 40.7%, P = 0.005). The presence of necrosis was directly related to the malignant behavior. The 3-year survival rate for presence and absence necrosis were 50.8% and 64.8% (P = 0.008). From the present study, we can conclude that besides tumors size and mitotic index, tumor location and necrosis also influence on the long-term survival of patient with malignant GISTs after surgical resection.

关键词： gastrointestinal stromal tumors surgery survival

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Endoscopic resection of a huge Brunner's gland adenoma

ZHANG Binbin, REN Xu, TANG Xiufen, CHI Yuxin, SHI Xuesong

《医学前沿（英文）》 2008年第2卷第4期页码 414-418 doi: 10.1007/s11684-008-0080-4

摘要： Brunner’s gland adenoma is a rare tumour of the duodenum, which is usually benign. A 71-year-old woman presenting with epigastric pain, upper gastrointestinal haemorrhage and melaena was reported in this paper. Upper gastro-intestinal (GI) endoscopy revealed a large pedunculated tumour on the superior part of the duodenal bulb. Endoscopic polypectomy was successfully performed by clipping and nylon thread without any complications. Histological examination revealed a Brunner’s gland adenoma.

关键词： superior Histological examination endoscopy gastro-intestinal gastrointestinal haemorrhage

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Immunotherapeutic effects on murine pancreatic carcinoma by β-elemene combined with dendritic cells modified

TAN Guang, WANG Zhongyu, CHE Luanqing, YIN Shuo

《医学前沿（英文）》 2007年第1卷第1期页码 41-45 doi: 10.1007/s11684-007-0008-4

摘要： The dendritic cell vaccine is a treatment vaccine with potent clinical applications. Functional cytokines can enhance dendritic cell anti-tumor immune responses. This experiment was conducted to study the effects of bone marrow-deriv

关键词： Functional experiment anti-tumor dendritic clinical

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Yesterday, Today and Future of the Engineering Management Body of Knowledge

Hiral Shah,Walter Nowocin

《工程管理前沿（英文）》 2015年第2卷第1期页码 60-63 doi: 10.15302/J-FEM-2015009

摘要： Young engineers are often promoted to leadership roles such as a team leader or a manager within 3 to 6 years of graduating from an undergraduate degree in a technical area. To be competent and successful in their leadership role engineers need to update their engineering management knowledge and learn new skills. The purpose of engineering management body of knowledge (EMBOK) is to delineate the knowledge, skills, and competency areas that are applicable to the engineering management discipline. It basically answers the question, “What does it take to be an effective engineering manager?” The EMBOK is based on a validated study and can be used for curriculum development, certification exams, and professional development programs. This paper describes the 11 domains that are included in the EMBOK and discuss the future publication of the EMBOK Guide. American Society for Engineering Management (ASEM) offers two certification exams based on the EMBOK, Associate Engineering Manager (AEM) and Professional Engineering Manager (PEM).These certification exams can help an individual in the engineering management profession to show that they have kept up in the field and possess the necessary skills and competency to practice in the discipline. A detailed description of this certification program is included in this paper. The future of EMBOK and the certification program is also discussed.

关键词： body of knowledge engineering management certification exam engineering manager competency areas

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Total pancreatic necrosis after organophosphate intoxication

Rui Hou, Hongmin Zhang, Huan Chen, Yuankai Zhou, Yun Long, Dawei Liu

《医学前沿（英文）》 2019年第13卷第2期页码 285-288 doi: 10.1007/s11684-018-0626-z

摘要： Cases of acute pancreatitis induced by organophosphate intoxication are encountered occasionally in clinics, but very few of them develop into severe pancreas necrosis and irreversible pancreatic function impairment. Here, we report a 47-year-old female organophosphate poisoning case after ingestion of massive insecticides; she was considered to have total necrosis and function failure of the pancreas via serum amylase test, glucose level test, and CT imaging. The patient exhibited no relief under the regular medicine treatment, which included sandostatin, antibiotics, intravenous atropine, and pralidoxime methiodide. She received percutaneous catheterization and drainage of pancreatic zone to expel hazardous necrotic waste, also by which the pathogenic evidence was obtained and the antibiotics were adjusted subsequently. The patient recovered gradually, was discharged after 2 weeks, and was prescribed with oral pancreatin capsules before meals and hypodermic insulin at meals and bedtime to compensate the impaired pancreatic function.

关键词： organophosphate intoxication severe acute pancreatitis pancreas necrosis percutaneous catheterization sandostatin insulin

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标题作者时间类型操作

Prevention and treatment of pancreatic fistula after pancreatic body and tail resection: current status

Li Jiang, Deng Ning, Xiaoping Chen

期刊论文

Laparoscopic surgery for pancreatic lesions: current status and future

Taiping Zhang, Xiao Du, Yupei Zhao

期刊论文

Adjuvant treatment strategy after curative resection for hepatocellular carcinoma

Wei Zhang, Bixiang Zhang, Xiao-ping Chen

期刊论文

The role of prophylactic transpapillary pancreatic stenting in distal pancreatectomy: a meta-analysis

null

期刊论文

loaded natural extracellular matrix hydrogel for inhibition of glioblastoma recurrence after tumor resection

期刊论文

Influence of the adjuvant therapy on the survival of patients with stage II pancreatic carcinoma

Xi-Yan WANG, Hai-Jun LI, Dong YAN, Hao WEN, Shu-Yong PENG,

期刊论文

Laboratory experiment on using non-floating body to generate electrical energy from water waves

Arunachalam AMARKARTHIK, Srinivasan CHANDRASEKARAN, Karuppan SIVAKUMAR, Harender SINHMAR

期刊论文

Analysis of 100 consecutive cases of resectable pancreatic neuroendocrine neoplasms: clinicopathological

null

期刊论文

Lightweight design of an electric bus body structure with analytical target cascading

期刊论文

Laparoscopic hepato-biliary-pancreatic surgery: present practices and prospects

Yongjun Chen, Renyi Qin, Xiaoping Chen

期刊论文

Potential indicators predict progress after surgical resection of gastrointestinal stromal tumors

null

期刊论文

Endoscopic resection of a huge Brunner's gland adenoma

ZHANG Binbin, REN Xu, TANG Xiufen, CHI Yuxin, SHI Xuesong

期刊论文

Immunotherapeutic effects on murine pancreatic carcinoma by β-elemene combined with dendritic cells modified

TAN Guang, WANG Zhongyu, CHE Luanqing, YIN Shuo

期刊论文

Yesterday, Today and Future of the Engineering Management Body of Knowledge

Hiral Shah,Walter Nowocin

期刊论文

Total pancreatic necrosis after organophosphate intoxication

Rui Hou, Hongmin Zhang, Huan Chen, Yuankai Zhou, Yun Long, Dawei Liu

期刊论文

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