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Animal models used to study direct peripheral nerve repair: a systematic review

Neural Regeneration Research 2020年第3期15卷 491-502页

作者： francisco Javier Vela Guadalupe Martínez-Chacón Alberto Ballestín JoséLuis Campos francisco miguel sánchez-margallo Elena Abellán Department of Microsurgery Jesús Usón Minimally Invasive Surgery CentreCáceresSpain scientific Director Jesús Usón Minimally Invasive Surgery CentreCáceresSpain

Objective:Peripheral nerve repair is required after traumatic *** common condition represents a major public health problem *** after nerve repair depends on several factors,including the severity of the injury,the nerve involved,and the surgeon’s technical *** the precise microsurgical repair of nerve lesions,adequate functional recovery is not always achieved and,therefore,the regeneration process and surgical techniques are still being ***-clinical animal models are essential for this research and,for this reason,the focus of the present systematic review(according to the PRIsMA statement)was to analyze the different animal models used in pre-clinical peripheral nerve repair *** sources:Original articles,published in English from 2000 to 2018,were collected using the Web of science,scopus,and PubMed *** selection:Only preclinical trials on direct nerve repair were included in this *** articles were evaluated by the first two authors,in accordance with predefined data *** measures:The primary outcomes included functional motor abilities,daily activity and regeneration *** outcomes included coaptation technique and animal ***:This review yielded 267 articles,of which,after completion of the screening,49 studies were *** were 1425 animals in those 49 studies,being rats,mice,guinea pigs,rabbits,cats and dogs the different pre-clinical *** nerves used were classified into three groups:head and neck(11),forelimb(8)and hindlimb(30).The techniques used to perform the coaptation were:microsuture(46),glue(12),laser(8)and mechanical(2).The follow-up examinations were histology(43),electrophysiological analysis(24)and behavioral observation(22).Conclusion:The most widely used animal model in the study of peripheral nerve repair is the *** animal models are also used but the cost-benefit of the rat model provides several strengths over the ***

关键词： nerve microsurgery peripheral nerve regeneration repair reconstruction direct nerve repair animal model coaptation PRIsMA systematic review

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Effect of double-balloon enteroscopy on pancreas:An experimental porcine model

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World Journal of Gastroenterology 2012年第37期18卷 5181-5187页

作者： Rafael Latorre Federico soria Octavio López-Albors Ricardo sarriá francisco sánchez-margallo Pilar Esteban Fernando Carballo Enrique Pérez-Cuadrado Department of Anatomy and Comparative Pathology University of MurciaCampus de Espinardo Jesús Usón Minimally Invasive surgery Center 10071 CáceresSpain Jesús Usón Minimally Invasive surgery Center Digestive service Morales Meseguer Hospital Digestive service Virgen de la Arrixaca Hospital

AIM： To evaluate the effect of double-balloon enteros- copy （DBE） on pancreas histology and levels of pancre- atic enzymes. METHODs： Conventional upper gastrointestinal endos- copy was performed on five control pigs. Oral DBE was performed with an EN-450T5 enteroscope on 20 pigs. Two experimental groups （10 pigs each） were defined according to DBE duration： 90 rain for Group 1 and 140 min for Group 2. During oral insertion, the balloons were not inflated in the descending part of the duodenum to avoid the minor duodenal papilla. serum amy- lase, lipase and C-reactive protein （CRP） levels were monitored before the procedure and repeated every 30 min until the exploration was finished, as well as 24 h and 7 d after. After the procedure and for a total of 7 d, the pigs were observed twice a day for signs of de- creased activity, irritability, vomiting or anorexia. Gross and microscopic examination of the pancreas was per- formed on day 7. REsULTs： All animals tolerated DBE without clini- cal manifestations of acute pancreatitis. Experimental groups had higher levels of enzymes than the control group at 24 h. Throughout the exploration, the amylase levels increased significantly above the baseline 24 h after DBE, although the increase was not statistically significant and did not reach 20% of the baseline. An increase in lipase and CRP was observed at 24 h after the procedure, although by day 7, all enzymatic lev- els had returned to baseline. No differences between Groups 1 and 2 were found for any enzyme and sam- pling site during and after the procedure. similarly, no correlation between insertion depth and enzyme levels was observed. Direct in situ and post-removal inspec- tion of the pancreas did not show any evidence of fluid collection, abscesses or hemorrhage. Histological examination of the pancreas from Groups 1 and 2 re- vealed the existence of focal areas （0.14-0.26 mm2） of ischemic necrosis in 47.4% of the animals. In the pigs with damaged pancreas, the lef

关键词： Endoscopy Pancreatitis Double-balloon en-teroscopy Experimental study Pig model

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