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https://www.readbyqxmd.com/read/28296236/development-of-the-endocrine-pancreas-in-the-beagle-dog-from-fetal-to-adult-life
#1
Emilie Bricout-Neveu, Severine Pechberty, Karine Reynaud, Cindy Maenhoudt, Marie José Lecomte, Philippe Ravassard, Paul Czernichow
Our objectives were to describe, in Beagle dogs, the ontogenesis of beta (insulin-producing) and alpha (glucagon-producing) cells from fetal to early postnatal life and adulthood. In addition, to have some insight into interspecies comparison, Beagle dog pancreases were compared to pancreases from a Labrador and Chow Chow. At midgestation, the epithelium was dense, beta cells scarce, and alpha cells numerous and concentrated in the center of the pancreatic bud. From 36 to 45 days post conception (pc), beta cell numbers increased and the epithelium expanded and branched out...
March 14, 2017: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/28293391/gestational-diabetes-leads-to-down-regulation-of-cdk4-prb-e2f1-pathway-genes-in-pancreatic-islets-of-rat-offspring
#2
Zahra Nazari, Mohammad Nabiuni, Mohsen Saeidi, Mohammad Jafar Golalipour
OBJECTIVES: The link between a hyperglycemic intrauterine environment and the development of diabetes later in life has been observed in offspring exposed to gestational diabetes mellitus (GDM), but the underlying mechanisms for this phenomenon are still not clear. Reduced β-cells mass is a determinant in the development of diabetes (type 1 and type 2 diabetes). Some recent studies have provided evidence that the CDK4-pRB-E2F1 regulatory pathway is involved in β-cells proliferation...
February 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/28281120/transduodenal-transpapillary-endopancreatic-surgery-with-a-rigid-resectoscope-experiments-on-ex-vivo-in-vivo-animal-models-and-human-cadavers
#3
Philip C Müller, Daniel C Steinemann, Felix Nickel, Lukas Chinczewski, Beat P Müller-Stich, Georg R Linke, Kaspar Z'graggen
BACKGROUND: Surgery for chronic pancreatitis is afflicted with high morbidity. A novel transduodenal-transpapillary endopancreatic resection (EPR) may provide a less invasive alternative approach. MATERIALS AND METHODS: After laparoscopic duodenotomy the papilla was dilated and accessed with a rigid resectoscope. A resection of pancreatic head tissue was performed from inside the organ. First, the feasibility and resection volume were assessed in bovine pancreas...
March 9, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28273237/effects-of-diazoxide-in-experimental-acute-necrotizing-pancreatitis
#4
Roberta de Oliveira Andrade, Tiago Kunitake, Marcia Kiyomi Koike, Marcel C C Machado, Heraldo Possolo Souza
OBJECTIVE: We aimed to assess the effects of diazoxide on the mortality, pancreatic injury, and inflammatory response in an experimental model of acute pancreatitis. METHODS: Male Wistar rats (200-400 g) were divided randomly into two groups. Fifteen minutes before surgery, animals received physiological (0.9%) saline (3 mL/kg) (control group) or 45 mg/kg diazoxide (treatment group) via the intravenous route. Acute pancreatitis was induced by injection of 2.5% sodium taurocholate via the biliopancreatic duct...
February 1, 2017: Clinics
https://www.readbyqxmd.com/read/28258621/eus-diagnosis-of-subepithelial-lesions
#5
REVIEW
Mitsuhiro Kida, Yusuke Kawaguchi, Eiji Miyata, Rikiya Hasegawa, Toru Kaneko, Hiroshi Yamauchi, Shuko Koizumi, Kosuke Okuwaki, Shiro Miyazawa, Tomohisa Iwai, Hidehiko Kikuchi, Maya Watanabe, Hiroshi Imaizumi, Wasaburo Koizumi
Using EUS, it is practicable to diagnose Subepithelial lesions (SEL) with originating layer, echo level, and internal echo pattern etc. Lipoma, lymphangioma, and cyst have characteristic features, therefore they have no need for EUS-FNA. Ectopic pancreases and glomus tumors, which are originated from 3(rd) and 4(th) layer, are frequently seen in the antrum. Although ectopic pancreases located in the fundus or body are large and originated from 3(rd) and 4(th) layer (thickening of 4(th) layer). Each Subepithelial lesions has each characteristic finding...
March 3, 2017: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
https://www.readbyqxmd.com/read/28252345/evidence-of-stress-in-%C3%AE-cells-obtained-with-laser-capture-microdissection-from-pancreases-of-brain-dead-donors
#6
Aref Ebrahimi, Min-Ho Jung, Jonathan M Dreyfuss, Hui Pan, Dennis Sgroi, Susan Bonner-Weir, Gordon C Weir
Isolated islets used for transplantation are known to be stressed, which can result from the circumstances of death, in particular brain death, the preservation of the pancreas with its warm and cold ischemia, from the trauma of the isolation process, and the complex events that occur during tissue culture. The current study focused upon the events that occur before the islet isolation procedure. Pancreases were obtained from brain dead donors (n = 7) with mean age 50 (11) and normal pancreatic tissue obtained at surgery done for pancreatic neoplasms (n = 7), mean age 69 (9)...
March 4, 2017: Islets
https://www.readbyqxmd.com/read/28247763/n-n-dimethyl-tertiary-amino-group-mediated-dual-pancreas-and-lung-targeting-therapy-against-acute-pancreatitis
#7
Shi Luo, Peiwen Li, Sha Li, Zhengwu Du, Xun Hu, Yao Fu, Zhirong Zhang
Acute pancreatitis (AP) is a sudden inflammation of the pancreas with high-mortality rate worldwide. As a severe complication to AP, acute lung injury has been the major cause of death among patients with AP. Poor penetration across the blood pancreas barrier (BPB), and insufficient drug accumulation at the target site often result in poor therapeutic outcome. Our previous work successfully demonstrated a dual-specific targeting strategy to pancreas and lung using a phenolic propanediamine moiety. Inspired by this, a simplified ligand structure, N, N-dimethyl tertiary amino group, was covalently conjugated to celastrol (CLT) to afford tertiary amino conjugates via either an ester (CP) or an amide linkage (CTA)...
March 1, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28246467/familial-pancreatic-cancer-concept-management-and-issues
#8
REVIEW
Hiroyuki Matsubayashi, Kyoichi Takaori, Chigusa Morizane, Hiroyuki Maguchi, Masamichi Mizuma, Hideaki Takahashi, Keita Wada, Hiroko Hosoi, Shinichi Yachida, Masami Suzuki, Risa Usui, Toru Furukawa, Junji Furuse, Takamitsu Sato, Makoto Ueno, Yoshimi Kiyozumi, Susumu Hijioka, Nobumasa Mizuno, Takeshi Terashima, Masaki Mizumoto, Yuzo Kodama, Masako Torishima, Takahisa Kawaguchi, Reiko Ashida, Masayuki Kitano, Keiji Hanada, Masayuki Furukawa, Ken Kawabe, Yoshiyuki Majima, Toru Shimosegawa
Familial pancreatic cancer (FPC) is broadly defined as two first-degree-relatives with pancreatic cancer (PC) and accounts for 4%-10% of PC. Several genetic syndromes, including Peutz-Jeghers syndrome, hereditary pancreatitis, hereditary breast-ovarian cancer syndrome (HBOC), Lynch syndrome, and familial adenomatous polyposis (FAP), also have increased risks of PC, but the narrowest definition of FPC excludes these known syndromes. When compared with other familial tumors, proven genetic alterations are limited to a small proportion (< 20%) and the familial aggregation is usually modest...
February 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28215485/association-of-igg4-response-and-autoimmune-pancreatitis-with-intraductal-papillary-mucinous-neoplasms
#9
Amin A Hedayat, Mikhail Lisovsky, Arief A Suriawinata, Daniel S Longnecker
OBJECTIVES: Concurrent intraductal papillary-mucinous neoplasm (IPMN) and autoimmune pancreatitis (AIP) was observed in a patient (index case) at our institution. Cases of coincidental IPMN and type 1 AIP and concurrent ductal adenocarcinoma (PDAC) and AIP have been previously reported. In this study we evaluate the hypothesis that IPMN elicits an IgG4 response. METHODS: Twenty-one pancreases (including the index case) with IPMN resected at our institution were studied...
February 8, 2017: Pancreatology: Official Journal of the International Association of Pancreatology (IAP) ... [et Al.]
https://www.readbyqxmd.com/read/28129233/laparotomy-cryoablation-in-rabbit-vx2-pancreatic-carcinoma
#10
Wenlong Zhang, Huimin Tao, Jianying Zeng, Gang Fang, Bing Liang, Liang Zhou, Xiaomei Luo, Jian Shi, Lizhi Niu
OBJECTIVE: The aim of this study was to establish a suitable rabbit model and select the optimal protocol for laparotomy cryoablation of pancreatic carcinoma. METHODS: VX2 tumor tissues were inoculated into rabbit pancreases to build the pancreatic carcinoma model; then, the tumor-bearing rabbits were randomly divided into 4 groups: control, treatment A (the cryoablated-iceball diameter was bigger than the tumor), treatment B (iceball was as big as the tumor), and treatment C (iceball was smaller than the tumor)...
March 2017: Pancreas
https://www.readbyqxmd.com/read/28028829/localization-of-nucleic-acid-sensing-toll-like-receptors-in-human-and-mouse-pancreas
#11
Olli Helminen, Heikki Huhta, Joonas H Kauppila, Petri P Lehenkari, Juha Saarnio, Tuomo J Karttunen
Nucleic acid-sensing toll-like receptors (TLRs) (3, 7, 8, 9) have a role both in antiviral innate immunity and in autoimmune disorders. We assessed the expression of TLR3, 7, 8 and 9 in human and mouse pancreas focusing on the subpopulations of cells in the Langerhans islets. We studied eight human samples with normal pancreatic islets and two samples from patients with type 1 diabetes. Additionally, 10 CD-1 mouse pancreases were analysed. Immunohistochemical double-stainings for the TLRs and insulin, glucagon or somatostatin, respectively, were performed along with appropriate controls...
February 2017: APMIS: Acta Pathologica, Microbiologica, et Immunologica Scandinavica
https://www.readbyqxmd.com/read/28002030/anti-hyperglycemic-activity-of-aegle-marmelos-l-corr-is-partly-mediated-by-increased-insulin-secretion-%C3%AE-amylase-inhibition-and-retardation-of-glucose-absorption
#12
Prawej Ansari, Nadia Afroz, Shahnaz Jalil, Sohel Bin Azad, Md Gazi Mustakim, Sabbir Anwar, S M Nazmul Haque, Saad Mosharraf Hossain, Ramisha Rifat Tony, J M A Hannan
BACKGROUND: Aegle marmelos (commonly known as Bael, golden apple) was formerly described to have anti-hyperglycemic activity. The present study aimed to explore the possible effects, in depth, of A. marmelos extracts on carbohydrate absorption, glucose utilization, and α-amylase inhibition and insulin content in pancreases of type 2 diabetic rats. METHODS: This research begins with fasting blood glucose and oral glucose tolerance test (OGTT) to evaluate the primary anti-hyperglycemic effect in chemically induced type 2 diabetic rats...
January 1, 2017: Journal of Pediatric Endocrinology & Metabolism: JPEM
https://www.readbyqxmd.com/read/27960161/cannabinoid-2-receptor-agonist-improves-systemic-sensitivity-to-insulin-in-high-fat-diet-streptozotocin-induced-diabetic-mice
#13
Xiuyuan Zhang, Shan Gao, Jinfeng Niu, Pan Li, Juan Deng, Shixin Xu, Zhihong Wang, Weiwei Wang, Deling Kong, Chen Li
BACKGROUND/AIMS: The endocannabinoid signalling (ECS) system has been known to regulate glucose homeostasis. Previous studies have suggested that the cannabinoid 2 (CB2) receptor may play a regulatory role on insulin secretion, immune modulation and insulin resistance. Given that diabetes and insulin resistance are attributable to elevated inflammatory tone, we investigated the role of CB2 receptor on glucose tolerance and insulin sensitivity in high-fat diet (HFD)/streptozotocin (STZ)-induced mice...
2016: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/27924070/modified-methods-for-isolation-of-pancreatic-stellate-cells-from-human-and-rodent-pancreas
#14
Liangtao Zhao, Baobao Cai, Zipeng Lu, Lei Tian, Song Guo, Pengfei Wu, Dong Qian, Qingcheng Xu, Kuirong Jiang, Yi Miao
Primary cultures of pancreatic stellate cells (PSCs) remain an important basis for in vitro study. However, effective methods for isolating abundant PSCs are currently lacking. We report on a novel approach to isolating PSCs from normal rat pancreases and human pancreatic ductal adenocarcinoma (PDAC) tissue. After anaesthesia and laparotomy of the rat, a blunt cannula was inserted into the pancreatic duct through the anti-mesentery side of the duodenum, and the pancreas was slowly infused with an enzyme solution until all lobules were fully dispersed...
November 2016: Journal of Biomedical Research
https://www.readbyqxmd.com/read/27895320/clinical-experience-with-pancreas-graft-rescue-from-severe-thrombus-after-simultaneous-pancreas-kidney-transplantation-by-early-detection-with-doppler-ultrasound-a-case-report
#15
Mitsunobu Takeda, Daisaku Yamada, Hidetoshi Eguchi, Tadafumi Asaoka, Takehiro Noda, Hiroshi Wada, Kunihito Goto, Koichi Kawamoto, Yutaka Takeda, Masahiro Tanemura, Toshinori Ito, Masaki Mori, Yuichiro Doki
BACKGROUND Graft thrombosis is the main cause of early graft loss after transplantation. In Japan, pancreases available for transplantation are frequently from marginal donors due to diverse backgrounds in the population. However, marginal tissues increase the risk of early thrombosis in the graft. CASE REPORT Here, we describe a 41-year-old woman with type 1 diabetes mellitus who underwent a simultaneous pancreas-kidney transplantation. The pancreas was retrieved from a 34-year-old man who had experienced severe hemodynamic instability...
November 29, 2016: American Journal of Case Reports
https://www.readbyqxmd.com/read/27892930/an-optimized-protocol-for-purification-of-functional-islets-of-langerhans
#16
Youakim Saliba, Jules-Joel Bakhos, Tarek Itani, Nassim Farès
Islets of Langerhans and β-cell isolation constitute routinely used cell models for diabetic research, and refining islet isolation protocols and cell quality assessment is a high priority. Numerous protocols have been published describing isolate of islets, but often rigorous and systematic assessment of their integrity is lacking. Herein, we propose a new protocol for optimal generation of islets. Pancreases from mice and rats were excised and digested using a low-activity collagenase solution and islets were then purified by a series of sedimentations and a Percoll gradient...
November 28, 2016: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/27882092/the-influence-of-exendin-4-intervention-on-obese-diabetic-mouse-blood-and-the-pancreatic-tissue-immune-microenvironment
#17
Jinshui He, Chaowei Lian, Yanling Fang, Jinzhi Wu, Huowang Zhou, Xiaoling Ye
The aim of the study was to determine the influence of exendin-4 intervention on non-obese diabetic (NOD) mouse blood and the pancreatic tissue immune microenvironment. A total of 40 clean NOD mice were used in the study and randomly divided into 4 groups (n=10/group). The first group was blank control group D with normal saline intervention, and with different doses of exendin, i.e.,-4 2, 4 and 8 µg/kg/day. The three remaining groups were: i) Low-dose group A; ii) medium-dose group B; and iii) high-dose group C...
November 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27874968/professionalization-of-surgical-abdominal-organ-recovery-leading-to-an-increase-in-pancreatic-allografts-accepted-for-transplantation-in-the-netherlands-a-serial-analysis
#18
Hwai-Ding Lam, Alexander F Schaapherder, Wouter H Kopp, Hein Putter, Andries E Braat, Andrzej G Baranski
Professional abdominal organ recovery with certification has been mandatory in the Netherlands since 2010. This study analyses the effects of certification (January 2010-September 2015) on pancreas transplantation and compares it to an era before certification (February 2002-May 2008) for surgical injuries and the number of pancreases transplanted. A total of 264 cases were analysed. Eighty-four recovered pancreases (31.8%) with surgically injuries were encountered. Forty-six of those were surgically salvaged for transplantation, resulting in a total of 226 (85...
November 22, 2016: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/27873446/the-first-2-years-of-activity-of-a-specialized-organ-procurement-center-report-of-an-innovative-approach-to-improve-organ-donation
#19
P Marsolais, P Durand, E Charbonney, K Serri, A-M Lagacé, F Bernard, M Albert
The number of patients requiring organ transplants continues to outgrow the number of organs donated each year. In an attempt to improve the organ donation process and increase the number of organs available, we created a specialized multidisciplinary team within a specialized organ procurement center (OPC) with dedicated intensive care unit (ICU) beds and operating rooms. The OPC was staffed with ICU nurses, operating room nurses, organ donor management ICU physicians, and multidisciplinary staff. All organ donors within a designated geographic area were transferred to and managed within the OPC...
November 22, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27871680/clinical-significance-of-circumportal-pancreas-a-rare-congenital-anomaly-in-pancreatectomy
#20
Takao Ohtsuka, Yasuhisa Mori, Kousei Ishigami, Takaaki Fujimoto, Yoshihiro Miyasaka, Kohei Nakata, Kenoki Ohuchida, Eishi Nagai, Yoshinao Oda, Shuji Shimizu, Masafumi Nakamura
BACKGROUND: Circumportal pancreas is a rare congenital pancreatic anomaly. The aim of this study was to clarify the clinical characteristics of patients with circumportal pancreases undergoing pancreatectomy. METHODS: The medical records of 508 patients who underwent pancreatectomy were retrospectively reviewed. The prevalence of circumportal pancreas and related anatomical variations were assessed. Surgical procedures and postoperative outcomes were compared in patients with and without circumportal pancreas...
November 15, 2016: American Journal of Surgery
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