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Biologic mesh

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https://www.readbyqxmd.com/read/29346034/coagulopathy-in-severe-sepsis-interconnectivity-of-coagulation-and-the-immune-system
#1
Jason M Samuels, Hunter B Moore, Ernest E Moore
BACKGROUND: Disseminated intravascular coagulation (DIC) remains a challenging complication of infection with inadequate treatment and significant morbidity and mortality rates. METHODS: Review of the English-language literature. RESULTS: Disseminated intravascular coagulation arises from the immune system's response to microbial invasion, as well as the byproducts of cell death that result from severe sepsis. This response triggers the coagulation system through an interconnected network of cellular and molecular signals, which developed originally as an evolutionary mechanism intended to isolate micro-organisms via fibrin mesh formation...
January 18, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29329539/state-dependent-domicile-leaving-rates-in-anopheles-gambiae
#2
Simon P W Zappia, Alex M Chubaty, Bernard D Roitberg
BACKGROUND: Transmission of Plasmodium greatly depends on the foraging behaviour of its mosquito vector (Anopheles spp.). The accessibility of blood hosts and availability of plant sugar (i.e., nectar) sources, together with mosquito energy state, have been shown to modulate blood feeding (and thus biting rates) of anopheline mosquitoes. In this study, the influence of mosquito starvation status and availability of nectar on the decision of female Anopheles gambiae mosquitoes to leave a bed net-protected blood host was examined...
January 12, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29320921/benefits-and-risks-with-acellular-dermal-matrix-adm-and-mesh-support-in-immediate-breast-reconstruction-a-systematic-review-and-meta-analysis
#3
Håkan Hallberg, Svanheidur Rafnsdottir, Gennaro Selvaggi, Annika Strandell, Ola Samuelsson, Ida Stadig, Therese Svanberg, Emma Hansson, Richard Lewin
In modern implant-based immediate breast reconstruction, it has become common to use biological acellular dermal and synthetic matrices in combination with a tissue expander or an implant. The aim of this systematic review was to examine differences in recurrence of cancer, impact on oncological treatment, health related quality of life, complications and aesthetic outcome between matrix and no matrix in immediate breast reconstruction. Systematic searches, data extraction and assessment of methodological quality were performed according to predetermined criteria...
January 10, 2018: Journal of Plastic Surgery and Hand Surgery
https://www.readbyqxmd.com/read/29316506/expansion-microscopy-development-and-neuroscience-applications
#4
REVIEW
Emmanouil D Karagiannis, Edward S Boyden
Many neuroscience questions center around understanding how the molecules and wiring in neural circuits mechanistically yield behavioral functions, or go awry in disease states. However, mapping the molecules and wiring of neurons across the large scales of neural circuits has posed a great challenge. We recently developed expansion microscopy (ExM), a process in which we physically magnify biological specimens such as brain circuits. We synthesize throughout preserved brain specimens a dense, even mesh of a swellable polymer such as sodium polyacrylate, anchoring key biomolecules such as proteins and nucleic acids to the polymer...
January 6, 2018: Current Opinion in Neurobiology
https://www.readbyqxmd.com/read/29314655/randomised-controlled-trial-of-standard-closure-of-stoma-site-versus-biologic-mesh-reinforcement-study-protocol-of-the-rocss-trial
#5
(no author information available yet)
BACKGROUND: Closure of complex and contaminated abdominal wounds is challenging and carries risks, including wound dehiscence and incisional hernias. Hernia formation at closed stoma sites occurs in up to 30% of patients. Use of biological meshes in these situations may provide a safe method of reducing these complications, especially long-term incisional hernias. METHOD: The Reinforcement of Closure of Stoma Site (ROCSS) study is a phase III multicentre randomised controlled trial (RCT), with an internal feasibility study...
January 3, 2018: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/29303160/a-modeling-and-simulation-language-for-biological-cells-with-coupled-mechanical-and-chemical-processes
#6
Endre Somogyi, James A Glazier
Biological cells are the prototypical example of active matter. Cells sense and respond to mechanical, chemical and electrical environmental stimuli with a range of behaviors, including dynamic changes in morphology and mechanical properties, chemical uptake and secretion, cell differentiation, proliferation, death, and migration. Modeling and simulation of such dynamic phenomena poses a number of computational challenges. A modeling language describing cellular dynamics must naturally represent complex intra and extra-cellular spatial structures and coupled mechanical, chemical and electrical processes...
April 2017: Symp Theory Model Simul
https://www.readbyqxmd.com/read/29302910/experiment-on-the-treatment-of-acid-mine-drainage-with-optimized-biomedical-stone-particles-by-response-surface-methodology
#7
Junzhen Di, Mingxin Wang, Zhitao Zhu
The immobilized particles were used to treat acid mine drainage (AMD) in the study, which owns the characteristics of serious pollution and high managing cost. The immobilized particles were prepared with sulfate reducing bacteria (SRB) and medical stones. In order to investigate the interactive influence of medical stones on the particle properties, the salt modification condition, content, and size of the medical stone were taken as the influential factors. At the same time, the removal rate of SO42- and Mn2+, the release of total irons (TFe) and chemical oxygen demand (COD) and pH value were taken as the response values in the experiment...
January 4, 2018: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29296101/preclinical-evaluation-of-the-effect-of-the-combined-use-of-the-ethicon-securestrap%C3%A2-open-absorbable-strap-fixation-device-and-ethicon-physiomesh%C3%A2-open-flexible-composite-mesh-device-on-surgeon-stress-during-ventral-hernia-repair
#8
Nadia Sutton, Melinda H MacDonald, John Lombard, Bodgan Ilie, Piet Hinoul, Douglas A Granger
Aim: To evaluate whether performing ventral hernia repairs using the Ethicon Physiomesh™ Open Flexible Composite Mesh Device in conjunction with the Ethicon Securestrap® Open Absorbable Strap Fixation Device reduces surgical time and surgeon stress levels, compared with traditional surgical repair methods. Methods: To repair a simulated ventral incisional hernia, two surgeries were performed by eight experienced surgeons using a live porcine model. One procedure involved traditional suture methods and a flat mesh, and the other procedure involved a mechanical fixation device and a skirted flexible composite mesh...
2018: Medical Devices: Evidence and Research
https://www.readbyqxmd.com/read/29280882/the-best-of-abdominal-wall-reconstruction
#9
REVIEW
Nakul Gamanlal Patel, Imran Ratanshi, Edward W Buchel
LEARNING OBJECTIVES: After reviewing this article, the participant should be able to: 1. List major risk factors for hernia formation and for failure of primary repair. 2. Outline an algorithmic approach to anterior abdominal wall reconstruction based on the degree of contamination, components involved in the deficit, and width of the hernia defect. 3. Describe appropriate indications for synthetic and biological mesh products. 4. List common flaps used in anterior abdominal wall reconstruction, including functional restoration strategies...
January 2018: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29280184/an-update-on-the-evidence-for-pathogenic-mechanisms-that-may-link-periodontitis-and-diabetes
#10
David Polak, Lior Shapira
AIM: To provide an update of the review by Taylor (Journal of Clinical Periodontology, 2013, 40, S113) regarding the scientific evidence of the biological association between periodontitis and diabetes. METHODS: Literature searches were performed using MeSH terms, keywords and title words and were published between 2012 and November 2016. All publications were screened for their relevance. The data from the articles were extracted and summarized in tables and a narrative review...
February 2018: Journal of Clinical Periodontology
https://www.readbyqxmd.com/read/29251555/reconstruction-of-the-thoracic-wall-with-biologic-mesh-after-resection-for-chest-wall-tumors-a-presentation-of-a-case-series-and-original-technique
#11
Giuseppe D'Amico, Roberto Manfredi, Gabriela Nita, Paola Poletti, Laura Milesi, Luca Livraghi, Eugenio Poletti, Maurizio Verga, Enrico Robotti, Luca Ansaloni
INTRODUCTION: Synthetic materials have traditionally been used for tissue reconstruction in thoracic surgery. New biomaterials have been tested in other areas of surgery with good results. Non-cross-linked swine dermal collagen prosthesis has been used to reconstruct musculofascial defects in the trunk with low infection and herniation rate. MATERIAL AND METHODS: Retrospectively, we analyze our initial experience of chest wall reconstruction on large defects using a non-cross-linked swine dermal collagen matrix mesh with a thickness of 1...
December 1, 2017: Surgical Innovation
https://www.readbyqxmd.com/read/29249195/surface-nanotopography-induced-favorable-modulation-of-bioactivity-and-osteoconductive-potential-of-anodized-3d-printed-ti-6al-4v-alloy-mesh-structure
#12
K C Nune, Rdk Misra, X Gai, S J Li, Y L Hao
The objective of the study described here is to fundamentally elucidate the biological response of 3D printed Ti-6Al-4V alloy mesh structures that were surface modified to introduce titania nanotubes with an average pore size of ∼80 nm via an electrochemical anodization process from the perspective of enhancing bioactivity. The bioactivity of the mesh structures were analyzed through immersion test in simulated body fluid, which confirmed the nucleation and growth of fine globular nanoscale apatite on the nanoporous titania-modified (anodized) mesh structure surface, and agglomerated apatite with fine flakes of apatite crystals on as-fabricated mesh structure surface, that were rich in calcium and phosphorous...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29236814/from-psychic-to-somatic-notes-on-the-reframing-of-the-contemporary-self
#13
Jane Russo
This exploration of the shift from a psychological understanding of the self to a somatic/cerebral one centers on the duality between the Enlightened, rationalist worldview and the so-called Romantic worldview, characteristic of modern Western culture. The discussion seeks to show how physicalism draws support from a reframing of what L.F. Duarte has called a "relentless tension" between these two worldviews. It finds basis in examples where biotechnological interventions are linked to heavy affective, emotional investment in bodily experiences and puts forward the notion of a contemporary "vitalism," where the category "life" is understood as something that, while anchored in biological materialism, moves beyond it, meshing with fluid categories like happiness and well-being or with feelings and emotions that resist objective definition...
November 2017: História, Ciências, Saúde—Manguinhos
https://www.readbyqxmd.com/read/29232694/hyperbranched-poly-%C3%AF%C2%B5-lysine-substrate-presenting-the-laminin-sequence-yigsr-induces-the-formation-of-spheroids-in-adult-bone-marrow-stem-cells
#14
Valeria Perugini, Steve T Meikle, Anna L Guildford, Matteo Santin
Unlike the fibroblast-like cells formed upon monolayer culture of human mesenchymal stem cells, the natural stem cell niche of the bone marrow and other types of tissues favours the formation of 3-dimensional (3D) cell clusters. The structuring and biological activity of these clusters are regulated by the contacts established by cells with both the basement membrane and neighbour cells and results in their asymmetric division and the consequent maintenance of both a stem population and a committed progeny...
2017: PloS One
https://www.readbyqxmd.com/read/29230283/repair-of-giant-inguinoscrotal-hernia-with-loss-of-domain
#15
Erion Qaja, Carol Le, Ramon Benedicto
A massive inguinoscrotal hernia extending below the midpoint of the inner thigh, in a standing position, constitute a 'giant' inguinoscrotal hernia. A 74-year-old male presented with giant left sided inguinal hernia for the last 30 years. Patient underwent open repair under general anesthesia after perioperative respiratory exercise. Standard hernia repair identified a sliding hernia containing entire omentum, small and large bowel, and the appendix. Giant hernias pose a challenging problem because reduction of the hernia contents inside the abdominal cavity may increase intra-abdominal and thoracic pressures...
November 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/29227902/china-s-great-leap-forward-an-estimate-of-total-and-additional-excess-male-birth-losses
#16
Victor Grech
INTRODUCTION: Stress reduces the male to female ratio at birth (M/T). China's Great Leap Forward (11/1957-1/1961) had disastrous consequences with a catastrophic national famine that lasted between 1959 and 1961. This resulted in a reduction in births and an additional male birth deficit. This study was carried out in order to estimate the total pregnancy losses and M/T, along with these value's perinatal mortality rates equivalents. METHODS: Estimated M/T and births for 1956-61 and for the aggregates of 1956-58 and 1959-61 were calculated...
December 8, 2017: Early Human Development
https://www.readbyqxmd.com/read/29223730/characterization-of-a-new-decellularized-bovine-pericardial-biological-mesh-structural-and-mechanical-properties
#17
Alessandra Bielli, Roberta Bernardini, Dimitrios Varvaras, Piero Rossi, Giancarlo Di Blasi, Giuseppe Petrella, Oreste Claudio Buonomo, Maurizio Mattei, Augusto Orlandi
Implants made from naturally-derived biomaterials, also called biological meshes or biomeshes, typically derive from decellularized extracellular matrix of either animal or human tissue. Biomeshes have many biomedical applications such as ligament repair, bone and cartilage regeneration and soft tissue replacement. Bovine collagen is one of the most widely used and abundantly available xenogenic materials. In particular, bovine pericardium is widely used as extracellular matrix bioprosthetic tissue. The efficiency of a pericardial mesh to function as scaffold depends on the quality of the decellularization protocol used...
February 2018: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29214543/comparison-of-biological-and-alloplastic-meshes-in-ventral-incisional-hernia-repair
#18
A Koscielny, S Widenmayer, T May, J Kalff, P Lingohr
PURPOSE: The aim of our retrospective analysis was to compare the results of incisional hernia repair by porcine small intestinal submucosa-derived (SIS) meshes with those obtained by alloplastic polypropylene-based (PP) meshes in comparable surgical indications by matched-pair design. We hypothesized that in incisional hernia, SIS mesh repair is associated with fewer recurrences and SSO than PP mesh repair in incisional hernias. METHODS: Twenty-four matched pairs (SIS vs...
December 6, 2017: Langenbeck's Archives of Surgery
https://www.readbyqxmd.com/read/29211118/venous-blood-derivatives-as-fbs-substitutes-for-mesenchymal-stem-cells-a-systematic-scoping-review
#19
Luiz A Chisini, Marcus C M Conde, Guillermo Grazioli, Alissa S San Martin, Rodrigo Varella de Carvalho, Jacques E Nör, Flávio F Demarco
Although the biological properties of mesenchymal stem cells (MSC) are well-characterized in vitro, MSC clinical application is still far away to be achieved, mainly due to the need of xenogeneic substances for cell expansion, such as fetal bovine serum (FBS). FBS presents risks regarding pathogens transmissions and internalization of animal's proteins, which can unleash antigenic responses in patients after MSC implantation. A wide range of venous blood derivatives (VBD) has been reported as FBS substitutes showing promising results...
November 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29199256/-synthesis-aggregation-self-assembly-and-dynamic-properties-of-helicene-oligomers
#20
Nozomi Saito
 Biological systems exhibit dynamic phenomena at the macroscopic level as a result of the hierarchical integration of phenomena at the molecular level. For example, a number of amino acids compose actin proteins, which form three-dimensional structures determined by the sequence of amino acids. They form fibers by self-assembly, which then form ordered structures such as meshes, lyotropic liquid crystals (LCs), and bundles. The dynamic and reversible polymorphism between these nano- to centimeter-sized ordered structures is essential for biological functions such as cell division, contraction, and locomotion...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
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