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Biologic mesh

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https://www.readbyqxmd.com/read/28812124/clozapine-chlorpromazine-and-risperidone-dose-dependently-reduce-emotional-hyperthermia-a-biological-marker-of-salience
#1
William W Blessing, Esther M Blessing, Mazher Mohammed, Youichirou Ootsuka
RATIONALE: We recently introduced a new rat model of emotional hyperthermia in which a salient stimulus activates brown adipose tissue (BAT) thermogenesis and tail artery constriction. Antipsychotic drugs, both classical and second generation, act to reduce excessive assignment of salience to objects and events in the external environment. The close association between salient occurrences and increases in body temperature suggests that antipsychotic drugs may also reduce emotional hyperthermia...
August 15, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/28808960/the-application-of-humanized-mouse-models-for-the-study-of-human-exclusive-viruses
#2
Fatemeh Vahedi, Elizabeth C Giles, Ali A Ashkar
The symbiosis between humans and viruses has allowed human tropic pathogens to evolve intricate means of modulating the human immune response to ensure its survival among the human population. In doing so, these viruses have developed profound mechanisms that mesh closely with our human biology. The establishment of this intimate relationship has created a species-specific barrier to infection, restricting the virus-associated pathologies to humans. This specificity diminishes the utility of traditional animal models...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28806146/three-dimensional-bioprinting-of-polycaprolactone-reinforced-gene-activated-bioinks-for-bone-tissue-engineering
#3
Gráinne M Cunniffe, Tomas Gonzalez-Fernandez, Andrew Daly, Binulal N Sathy, Oju Jeon, Eben Alsberg, Daniel J Kelly
Regeneration of complex bone defects remains a significant clinical challenge. Multi-tool biofabrication has permitted the combination of various biomaterials to create multifaceted composites with tailorable mechanical properties and spatially controlled biological function. In this study we sought to use bioprinting to engineer nonviral gene activated constructs reinforced by polymeric micro-filaments. A gene activated bioink was developed using RGD-γ-irradiated alginate and nano-hydroxyapatite (nHA) complexed to plasmid DNA (pDNA)...
August 14, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28778063/coaxial-electrospun-pcl-gelatin-ma-fibers-as-scaffolds-for-vascular-tissue-engineering
#4
P Coimbra, P Santos, P Alves, Sónia P Miguel, Marco P Carvalho, Kevin D de Sá, I J Correia, P Ferreira
Coaxial electrospinning is a technique that allows the production of nanofibers with a core-shell structure. Such fibers present several advantages as materials for the preparation of scaffolds, namely due to the possibility of combining a core with the desired mechanical properties with a shell prepared from biocompatible materials that will establish proper interactions with the host. Herein, core-shell fibrous meshes, composed of a polycaprolactone (PCL) core and a functionalized gelatin shell, were prepared by coaxial electrospinning and then photocrosslinked under UV light aiming to be used in vascular tissue regeneration...
July 26, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28774442/computational-modeling-for-prediction-of-the-shear-stress-of-three-dimensional-isotropic-and-aligned-fiber-networks
#5
Seungman Park
BACKGROUND AND OBJECTIVE: Interstitial flow (IF) is a creeping flow through the interstitial space of the extracellular matrix (ECM). IF plays a key role in diverse biological functions, such as tissue homeostasis, cell function and behavior. Currently, most studies that have characterized IF have focused on the permeability of ECM or shear stress distribution on the cells, but less is known about the prediction of shear stress on the individual fibers or fiber networks despite its significance in the alignment of matrix fibers and cells observed in fibrotic or wound tissues...
September 2017: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/28772718/the-relationship-between-the-mechanism-of-zinc-oxide-crystallization-and-its-antimicrobial-properties-for-the-surface-modification-of-surgical-meshes
#6
Marta Fiedot, Irena Maliszewska, Olga Rac-Rumijowska, Patrycja Suchorska-Woźniak, Agnieszka Lewińska, Helena Teterycz
Surgical meshes were modified with zinc oxide (ZnO) using a chemical bath deposition method (CBD) at 50 °C, 70 °C, or 90 °C, in order to biologically activate them. Scanning electron microscopy (SEM), mass changes, and X-ray diffraction measurements revealed that at low temperatures Zn(OH)₂ was formed, and that this was converted into ZnO with a temperature increase. The antimicrobial activity without light stimulation of the ZnO modified Mersilene™ meshes was related to the species of microorganism, the incubation time, and the conditions of the experiment...
March 28, 2017: Materials
https://www.readbyqxmd.com/read/28770120/laparoscopic-repair-of-a-large-paraesophageal-hernia-with-migration-of-the-stomach-into-the-mediastinum-creating-an-upside-down-stomach
#7
Nasser Sakran, Hadar Nevo, Ron Dar, Asnat Raziel, Dan Hershko
Upside-down stomach is a relatively rare type of a large paraesophageal hernia characterized by the migration of the stomach into the posterior mediastinum. Upside-down stomach is prone to severe complications and therefore surgery is recommended even in asymptomatic patients. A 62-year-old male presented with frequent abdominal pain with nausea and vomiting that persisted for one year. The patient was obese with fatty liver and was treated medically for gastroesophageal reflux disease (GERD) for 4 years. On upper gastrointestinal CT study a level-IV paraesophageal hernia was detected with upside-down stomach, and he was referred for elective surgery...
2017: Case Reports in Surgery
https://www.readbyqxmd.com/read/28768227/variation-in-the-provision-and-practice-of-implant-based-breast-reconstruction-in-the-uk-results-from-the-ibra-national-practice-questionnaire
#8
Senthurun Mylvaganam, Elizabeth Conroy, Paula R Williamson, Nicola L P Barnes, Ramsey I Cutress, Matthew D Gardiner, Abhilash Jain, Joanna M Skillman, Steven Thrush, Lisa J Whisker, Jane M Blazeby, Shelley Potter, Christopher Holcombe
INTRODUCTION: The introduction of biological and synthetic meshes has revolutionised the practice of implant-based breast reconstruction (IBBR) but evidence for effectiveness is lacking. The iBRA (implant Breast Reconstruction evAluation) study is a national trainee-led project that aims to explore the practice and outcomes of IBBR to inform the design of a future trial. We report the results of the iBRA National Practice Questionnaire (NPQ) which aimed to comprehensively describe the provision and practice of IBBR across the UK...
July 30, 2017: Breast: Official Journal of the European Society of Mastology
https://www.readbyqxmd.com/read/28760734/an-ex-vivo-model-using-human-peritoneum-to-explore-mesh-tissue-integration
#9
Peter Falk, Fernando Ruiz-Jasbon, Karin Strigård, Ulf Gunnarsson, Marie-Lois Ivarsson
Biological compatibility, in terms of implantation of foreign mesh material in hernia surgery, still needs experimental investigation. Present study develops an experimental model using human peritoneum to study the integration between tissue and different mesh material. The ex vivo model using peritoneal tissue was studied with different mesh material, and integration was monitored over time using microscopy.It could be demonstrated that the peritoneal model may be kept viable in culture for several weeks...
July 31, 2017: Biology Open
https://www.readbyqxmd.com/read/28759459/anterior-compartment-prolapse-what-s-new
#10
Patrick Lang, James L Whiteside
PURPOSE OF REVIEW: The purpose of this review is to summarize the treatment options for anterior compartment prolapse, describe the role that apical suspension plays in the correction of anterior vaginal wall prolapse, and assess the risks and benefits of biologic and synthetic graft use in anterior compartment repair. RECENT FINDINGS: In 2016, The Cochrane Review published a review of 37 trials including 4023 participants finding that compared to native tissue repair, the use of synthetic mesh resulted in reduced symptomatic prolapse recurrence, anatomic recurrence, and repeat prolapse surgery...
July 29, 2017: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28750602/mechanical-induction-of-bi-directional-orientation-of-primary-porcine-bladder-smooth-muscle-cells-in-tubular-fibrin-poly-vinylidene-fluoride-scaffolds-for-ureteral-and-urethral-repair-using-cyclic-and-focal-balloon-catheter-stimulation
#11
Volker Seifarth, Joachim O Grosse, Matthias Gossmann, Heinz Peter Janke, Patrick Arndt, Sabine Koch, Matthias Epple, Gerhard M Artmann, Aysegül Temiz Artmann
To restore damaged organ function or to investigate organ mechanisms, it is necessary to prepare replicates that follow the biological role model as faithfully as possible. The interdisciplinary field of tissue engineering has great potential in regenerative medicine and might overcome negative side effects in the replacement of damaged organs. In particular, tubular organ structures of the genitourinary tract, such as the ureter and urethra, are challenging because of their complexity and special milieu that gives rise to incrustation, inflammation and stricture formation...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/28748853/pingyangmycin-pretreatment-influences-the-biological-behavior-of-ocular-venous-malformation-and-relates-with-galectin-3-expression
#12
Jin Li, Jun-Bo Qiao, Qiu-Yu Liu
BACKGROUND: Galectin-3 (Gal-3) plays a role in the mechanisms underlying ocular venous malformation. We conducted this study to investigate the effect of pingyangmycin pretreatment on the Gal-3 expressions and biological behavior of ocular venous malformation. METHODS: Tissue samples were collected from 136 patients with ocular venous malformation. Patients were randomly divided into pingyangmycin (n = 69) and nonpingyangmycin group (n = 67). Patients in the pingyangmycin group received a local injection of 0...
August 5, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28732878/cyclodextrin-based-nanosponges-a-critical-review
#13
REVIEW
Atul P Sherje, Bhushan R Dravyakar, Darshana Kadam, Mrunal Jadhav
Cyclodextrin-based nanosponges (CD-NS) are innovative cross-linked cyclodextrin polymers nanostructured within three-dimensional network. CD-NS are highly porous nanoparticles characterized by crystalline or amorphous structure, spherical shape and swelling properties. Different cross-linkers provide variety of nanosponges. The polarity, dimension of the polymer mesh and release of entrapped molecule can be easily tuned by varying the type of cross-linker and degree of cross-linking. The site-specific targeting can be achieved by conjugating various ligands on the surface of nanosponge...
October 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28726148/first-human-use-of-hybrid-synthetic-biologic-mesh-in-ventral-hernia-repair-a-multicenter-trial
#14
James G Bittner, Kevin El-Hayek, Andrew T Strong, Melissa Phillips LaPinska, Jin S Yoo, Eric M Pauli, Matthew Kroh
BACKGROUND: Mesh options for reinforcement of ventral/incisional hernia (VIH) repair include synthetic or biologic materials. While each material has known advantages and disadvantages, little is understood about outcomes when these materials are used in combination. This multicenter study reports on the first human use of a novel synthetic/biologic hybrid mesh (Zenapro(®) Hybrid Hernia Repair Device) for VIH repair. METHODS: This prospective, multicenter post-market clinical trial enrolled consecutive adults who underwent elective VIH repair with hybrid mesh placed in the intraperitoneal or retromuscular/preperitoneal position...
July 19, 2017: Surgical Endoscopy
https://www.readbyqxmd.com/read/28717912/management-of-the-open-abdomen-after-liver-transplantation
#15
Christian Hobeika, Marc-Antoine Allard, Petru-Octav Bucur, Salima Naili, Antonio Sa Cunha, Daniel Cherqui, Denis Castaing, René Adam, Eric Vibert
INTRODUCTION: The optimal management of the open abdomen (OA) after liver transplantation (LT) is unclear. The negative pressure wound therapy (NPWT) has been shown to be safe and can increase the chance for early fascial closure in trauma or septic patients. However, little data are available on the specific setting of LT. We aimed to report our experience of OA after LT, marked by the recent use of NPWT. METHODS: All patients with postponed wall closure after LT, from 2002 to 2014, in a single institution were included and retrospectively analyzed...
July 17, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28695312/use-of-biological-mesh-in-trans-anal-treatment-for-recurrent-recto-urethral-fistula
#16
G Moretto, A Casaril, M Inama
PURPOSE: To report the author's experience on a mini-invasive technique using bioprosthetic plug and a rectal wall flap advancement in the treatment of recurrent recto-urethral fistula. MATERIALS AND METHODS: Between 2013 and 2015, seven patients with recurrent recto-urethral fistula were referred to the Pederzoli Hospital, Peschiera del Garda, Verona, Italy. Intraoperatively all patients were found to have a rectal wall lesion and were treated with urinary and fecal diversion...
July 10, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/28693196/early-diagnosis-of-venous-thromboembolism-as-a-clinical-primary-symptom-of-occult-cancer-core-proteins-of-a-venous-thrombus
#17
Siwan Wen, Qianglin Duan, Fan Yang, Guiyuan Li, Lemin Wang
Malignancy is one of the risk factors of venous thromboembolism (VTE). As a common accompanying factor of malignant tumors, almost 20% of idiopathic VTEs are identified in patients with occult types of cancer as the primary symptom. The type of internal association that exists between malignant tumors and VTE has not yet been determined. The present review discusses the following: i) Reversible combinations between core proteins of venous thrombi and their ligand proteins. With the condition of immune cell balancing function collapse, which is characterized as dysfunction immune cells and impaired immune functions, the human body loses the function of eliminating infectious/malignant cells quickly and effectively...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28693045/hiatal-hernia-repair-current-evidence-for-use-of-absorbable-mesh-to-reinforce-hiatal-closure
#18
Lucian Panait, Yuri W Novitsky
INTRODUCTION: There continues to be debate regarding the best surgical technique for the treatment of paraesophageal hernias. While laparoscopic and robotic approaches are widely employed around the world, the benefits of mesh use to reinforce hiatal closure are still not well established. The goal of this manuscript is to describe the currently available results with biologic and bioabsorbable meshes for treatment of paraesophageal hernias, particularly with reference to the rate of recurrence...
July 11, 2017: Surgical Technology International
https://www.readbyqxmd.com/read/28691470/replica-guided-trauma-surgery
#19
F Laganà, E Segna, A Baj, G Beltramini, A Russillo, V Candotto, F J Silvestre, A B Giannì
The aim of this study is to present a new approach to the surgical treatment of fractures of the middle third of the face, based on the use of resorbable materials and stereolithographic models. From 2009 to 2014, we treated 10 cases of orbitozygomatic trauma mostly as secondary surgery. For each case, an anatomical replica had been produced simulating the expected result and was then used to contour the resorbable plates on its surface, even before the beginning of the surgical procedure itself. The plates and meshes already bended act as a guide to bony reduction procedure...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28673602/platelet-rich-plasma-as-a-minimally-invasive-approach-to-uterine-prolapse
#20
E L Chrysanthopoulou, V Pergialiotis, D Perrea, S Κourkoulis, C Verikokos, S K Doumouchtsis
Pelvic organ prolapse (POP) is a major health problem that affects many women with potentially severe physical and psychological impact as well as impact on their daily activities, and quality of life. Several surgical techniques have been proposed for the treatment of POP. The FDA has published documents that refer to concerns about the use of synthetic meshes for the treatment of prolapse, in view of the severe complications that may occur. These led to hesitancy in use of these meshes and partial increase in use of other biological grafts such as allografts and xenografts...
July 2017: Medical Hypotheses
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