Early Local Drug Therapy for Pancreatic Contusion and Laceration
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Pancreatology 19 (2019) 285e289 Contents lists available at ScienceDirect Pancreatology journal homepage: www.elsevier.com/locate/pan Early local drug therapy for pancreatic contusion and laceration Cong Feng a, 1, Hao Yang e, 1, Sai Huang c, 1, Xuan Zhou a, 1, Lili Wang a, Xiang Cui d, *** ** * Li Chen a, , 2, Faqin Lv b, , 2, Tanshi Li a, , 2 a Department of Emergency, First Medical Center, General Hospital of the PLA, Beijing, 100853, China b Department of Ultrasound, Hainan Hospital of the PLA General Hospital, Sanya, 572000, China c Department of Hematology, First Medical Center, General Hospital of the PLA, Beijing, 100853, China d Department of Orthopedics, First Medical Center, General Hospital of the PLA, Beijing, 100853, China e Department of Radiation Oncology, Inner Mongolia Cancer Hospital & Affiliated People's Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia, 010020, China article info abstract Article history: Objectives: To study the therapeutic effect of early local drug therapy on pancreatic contusion and Received 18 September 2018 laceration. Received in revised form Methods: Twenty pigs were divided into 4 groups: model(PL), 1 ml of saline; medical protein glue (EC), 12 December 2018 1 ml of medical protein glue; ulinastatin (UL), 50000U of ulinastatin; combined treatment (UE), 1 ml of Accepted 16 January 2019 medical protein glue and 50000U of ulinastatin. 30 min after model establishment, different groups Available online 17 January 2019 received different local drug treatments. The pancreatic function, peritoneal effusion and pancreatic pathology were observed. Keywords: Pancreatic contusion and laceration Results: The UE group got the best therapeutic effect. The changes of pancreatic function and the peri- < > Minimally invasive treatment toneal effusion were compared with PL group as follows. 0-6h: amylase (p 0.01), lipase (p 0.05), Ulinastatin effusion (p < 0.01); 6-12h: amylase (p > 0.05), lipase (p < 0.01), effusion (p < 0.01); 12-24h: amylase Medical protein glue (p < 0.01), lipase (p < 0.01), effusion (p < 0.01). Conclusions: Early local drug therapy in pancreatic contusion and laceration could effectively control the development of the disease and improve the prognosis. © 2019 IAP and EPC. Published by Elsevier B.V. All rights reserved. Introduction peripancreatic tissue, causing mild pancreatic laceration to become a serious “secondary pancreatic rupture” and following the severe Pancreatic contusion and laceration, even a small wound would complications: the main pancreatic duct broken and the sur- activate and produce digestive effects. Pancreatic juice containing rounding large blood vessels ruptured. high concentrations of digestive enzymes could be extravasated When pancreatic capsule is not ruptured, the pancreatic capsule from the laceration to the pancreatic interstitial or peripancreatic plays a key role of “tightening” and aggravates the dysfunction of tissue and then activated and digests the pancreas and circulation of pancreatic tissue, which forming a vicious circle. In addition, self-injury repair is more difficult, leading to the occur- rence of traumatic pancreatitis. More over, due to the over- * Corresponding author. Department of Emergency, First Medical Center, General activation effect of pancreatic enzyme after pancreatic contusion Hospital of the PLA, Beijing, 100853, China. and laceration, the incidence of postoperative pancreatic fistula is ** Corresponding author. Department of Ultrasound, Hainan Hospital of the PLA high. Therefore, early intervention is the key to the treatment of General Hospital, Sanya, 572000, China. pancreatic contusion and laceration and affect prognosis. *** Corresponding author. Department of Emergency, First Medical Center, Gen- eral Hospital of the PLA, Beijing, 100853, China. In this study, we use medical protein glue and protease in- E-mail addresses: [email protected] (C. Feng), [email protected] (H. Yang), hibitors for early local drug intervention in pancreatic contusion [email protected] (S. Huang), [email protected] (X. Zhou), and laceration to observe the therapeutic effects in different [email protected] (L. Wang), [email protected] (X. Cui), chenli-china@ methods, providing new research evidence of early local drug 163.com (L. Chen), [email protected] (F. Lv), [email protected] (T. Li). therapy for pancreatic contusion and laceration. 1 These authors contributed equally to this work as co-first authors. 2 These authors contributed equally to this work as corresponding author. https://doi.org/10.1016/j.pan.2019.01.013 1424-3903/© 2019 IAP and EPC. Published by Elsevier B.V. All rights reserved. 286 C. Feng et al. / Pancreatology 19 (2019) 285e289 Methods establishment, different drug treatments were started. In PL group, 1 ml of saline was injected into the wound margin tissue. In EC Ethics group, the medical protein glue EC-type (1 ml) was used to cover the wound of laceration. In UL group, the ulinastatin (50000U,1 ml) The experimental protocol was approved by the Ethics Com- was injected into the wound of laceration. In the EU group, the mittee for Animal Research from the General Hospital of the PLA wound of laceration was injected ulinastatin (50000U,1 ml) first and all experimental pigs received humane care. and covered medical protein glue EC-type (1 ml). After the inter- vention of each group, the abdomen was closed by surgical method. Experimental animals Measurement of peritoneal effusion under ultrasound A total of 20 healthy male miniature pigs weighing 10±1kg were provided by the Experimental Animal Center of the PLA At 6 h, 12 h, and 24 h after model establishment, the peritoneal General Hospital(Beijing, China). effusion was observed at the left kidney area and the maximum depth of peritoneal effusion was measured and recorded. At each Drugs and reagents time point, the measure area was fixed and the model preparation and ultrasound examination were performed by different physi- Pentobarbital sodium (National Pharmaceutical Group Chemical cians without communication of each other. Reagent Co., Ltd. China), heparin sodium injection (Shanghai First Biochemical Pharmaceutical Co., Ltd. China), medical protein glue Pathological observation of pancreatic contusion and laceration EC type (Guangzhou Baiyun Medical Adhesive Co., Ltd. China), ulinastatin (Guangdong Tianpu Biochemical Pharmaceutical Co., At the 24th hour after model establishment, pancreatic contu- Ltd. China), amylase and lipase assay kit (RANDOX company). sion and laceration tissue for histology was fixed in formalin, sub- jected to conventional dehydration, embedded in paraffin and then Main experimental equipments sectioned into 5-mm sections, for subsequent staining by hema- toxylin and eosin. Examination by light microscopy was performed Automatic biochemical analyzer (Beckman Coulter-AU5800, by the same professional pathologist without knowing the groups. USA), fully automatic microplate reader (BIO-TEK, USA). 200 high-power field of vision was selected for each slice and pancreatic pathology scores were analyzed based on histology ac- Experimental groups cording to the Schmidt method [4]. Pigs were randomly divided into four groups. 1) Model group Assays and calculations (n ¼ 5, PL): Induction of PL with sham early local drug therapy of 1 ml of saline. 2) Medical protein glue EC type group (n ¼ 5, EC): The entire experiment lasted 24 h. Blood samples from internal Induction of PL with early local drug therapy of medical protein jugular vein in PL, EC, UL and EU groups were collected for glue (1 ml). 3) Ulinastatin group (n ¼ 5, UL): Induction of PL with pancreatic functions: amylase, lipase. Measurements of peritoneal early local drug therapy of ulinastatin (50000U, 1 ml). 4) Combined effusion were observed for PL development evaluation. Patholog- treatment group (n ¼ 5, UE): Induction of PL with early local drug ical pathology observation of pancreatic contusion and laceration therapy of medical protein glue (1 ml) and ulinastatin (50000U, was for local drug treatment evaluation. The time points for col- 1 ml). lecting blood samples and the measurement of peritoneal effusion were: 1) before the model preparation(the 0 h of the experiment); Animal model 2) 6 h after the model establishment; 3) 12 h after the model establishment; 4) 24 h after the model establishment (the end of The pigs were fasted for 12h and had no access to water for 4 h the experiment). prior to undergoing surgery. Pigs were anesthetized by intramus- cular injection of 3% pentobarbital sodium(30 mg/kg). After suc- Statistical analysis cessful anesthesia, the animals were placed on the bench in the supine position and heparin (300 IU/kg) was given intravenously to Results are expressed as mean ± standard deviation, using SPSS resist the coagulation system. 19.0 statistical software. Repeated measures were analyzed of According to Song Qing method to prepare the pancreatic variance. Comparisons of multiple independent samples were contusion and laceration model. Surgically exposed pancreas and performed using the rank sum test (Kruskal-Wallis H test). P < 0.05 prepared one site of pancreatic contusion and laceration of about indicates a statistical difference, and p < 0.01 indicates a significant 1.5 cm in length by hemostatic forceps on the surface of the body of difference. the pancreas [1]. The depth of the contusion and laceration is less than 1/2 of the thickness of the pancreas to avoid damage to the Results pancreatic duct. The contusion and laceration wound