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https://www.readbyqxmd.com/read/28324956/a-graphene-oxide-ph-sensor-for-wound-monitoring
#1
B Melai, P Salvo, N Calisi, L Moni, A Bonini, C Paoletti, T Lomonaco, V Mollica, R Fuoco, F Di Francesco
This article describes the fabrication and characterization of a pH sensor for monitoring the wound status. The pH sensitive layer consists of a graphene oxide (GO) layer obtained by drop-casting 5 μΐ of GO dispersion onto the working electrode of a screen-printed substrate. Sensitivity was 31.8 mV/pH with an accuracy of 0.3 unit of pH. Open-circuit potentiometry was carried out to measure pH in an exudate sample. The GO pH sensor proved to be reliable as the comparison with results obtained from a standard glass electrode pH-meter showed negligible differences (<; 0...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28324742/epithelial-homeostasis-a-piezo-of-the-puzzle
#2
Eugenia Piddini
A recent study shows that, upon stretching or wounding, epithelia display a fast proliferative response that allows for re-establishment of optimal cell density or sealing of the wound. This increased proliferation is induced by the stretch-activated channel Piezo1 and involves calcium-triggered ERK signalling.
March 20, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28324680/somatic-complications-of-epilepsy-surgery-over-25-years-at-a-single-center
#3
Inuka K Gooneratne, Shahidul Mannan, Jane de Tisi, Juan C Gonzalez, Andrew W McEvoy, Anna Miserocchi, Beate Diehl, Tim Wehner, Gail S Bell, Josemir W Sander, John S Duncan
INTRODUCTION: Epilepsy surgery is an effective treatment for refractory focal epilepsy. Risks of surgery need to be considered when advising individuals of treatment options. We describe the frequency and nature of physical adverse events associated with epilepsy surgery in a single center. MATERIAL AND METHODS: We reviewed the prospectively maintained records of adults who underwent epilepsy surgery at our center between 1990 and 2014 to identify peri/postsurgical adverse events...
March 1, 2017: Epilepsy Research
https://www.readbyqxmd.com/read/28324165/lipid-phenol-and-carotenoid-changes-in-bianca-grapevine-leaves-after-mechanical-wounding-a-case-study
#4
Giulia Chitarrini, Luca Zulini, Domenico Masuero, Urska Vrhovsek
Metabolic changes can occur in plants in response to abiotic stress. Extensive use of leaf discs (mechanical wounding) in studies regarding the effect on the biochemical response of the grapevine to different types of biotic stress makes it necessary to understand metabolic perturbation after injury. In this study, we investigate how mechanical wounding can affect the metabolism of grapevine leaf tissue using Bianca variety as case study. Two sizes of leaf discs (1.1 and 2.8 cm in diameter) were excised from leaves, and phenol, lipid and carotenoid perturbation were investigated 0, 6, 12, 24, 48, 96 and 120 h post cutting...
March 21, 2017: Protoplasma
https://www.readbyqxmd.com/read/28324162/reduction-of-relative-centrifugal-forces-increases-growth-factor-release-within-solid-platelet-rich-fibrin-prf-based-matrices-a-proof-of-concept-of-lscc-low-speed-centrifugation-concept
#5
K El Bagdadi, A Kubesch, X Yu, S Al-Maawi, A Orlowska, A Dias, P Booms, E Dohle, R Sader, C J Kirkpatrick, J Choukroun, S Ghanaati
Purpose The present study evaluated the platelet distribution pattern and growth factor release (VEGF, TGF-β1 and EGF) within three PRF (platelet-rich-fibrin) matrices (PRF, A-PRF and A-PRF+) that were prepared using different relative centrifugation forces (RCF) and centrifugation times. Materials and methods immunohistochemistry was conducted to assess the platelet distribution pattern within three PRF matrices. The growth factor release was measured over 10 days using ELISA. Results The VEGF protein content showed the highest release on day 7; A-PRF+ showed a significantly higher rate than A-PRF and PRF...
March 21, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28324043/reduced-transforming-growth-factor-beta-activity-in-the-endometrium-of-women-with-heavy-menstrual-bleeding
#6
J A Maybin, L Boswell, V J Young, W C Duncan, Hod Critchley
Context: Heavy menstrual bleeding (HMB) is common and incapacitating. Aberrant menstrual endometrial repair may result in HMB. The TGFβ superfamily contributes to tissue repair, but its role in HMB is unknown. Objective: We hypothesised that TGFβ1 is important for endometrial repair and women with HMB have aberrant TGFβ1 activity at menses. Participants/Setting: Endometrial biopsies were collected from women and menstrual blood loss objectively measured (HMB >80ml/cycle, normal menstrual bleeding, NMB <80ml)...
January 3, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323921/emerging-roles-for-micrornas-in-diabetic-microvascular-disease-novel-targets-for-therapy
#7
Yu Zhang, Xinghui Sun, Basak Icli, Mark W Feinberg
Chronic, low-grade systemic inflammation and impaired microvascular function are critical hallmarks in the development of insulin resistance. Accordingly, insulin resistance is a major risk factor for type 2 diabetes and cardiovascular disease. Accumulating studies demonstrate that restoration of impaired function of the diabetic macro- and microvasculature may ameliorate a range of cardiovascular disease states and diabetes-associated complications. In this review, we focus on the emerging role of microRNAs, non-coding RNAs that fine-tune target gene expression and signaling pathways, in insulin-responsive tissues and cell types important for maintaining optimal vascular homeostasis and preventing the sequelae of diabetes-induced end organ injury...
February 17, 2017: Endocrine Reviews
https://www.readbyqxmd.com/read/28323799/a-prospective-randomized-trial-to-assess-oral-versus-intravenous-antibiotics-for-the-treatment-of-postoperative-wound-infection-after-extremity-fractures-poviv-study
#8
William T Obremskey, Andrew H Schmidt, Robert V OʼToole, Jennifer DeSanto, Saam Morshed, Paul Tornetta, Clinton K Murray, Clifford B Jones, Daniel O Scharfstein, Tara J Taylor, Anthony R Carlini, Renan C Castillo
Patients surgically treated for infection after extremity fractures are typically discharged with a 6- to 12-week antibiotic regimen. Intravenous (IV) antibiotics are associated with significant cost and potential complications of deep vein thrombosis, line clotting, and sepsis. Many of the pathogens that cause musculoskeletal infection have both oral (PO) and IV antibiotic options with adequate bioavailability and antibacterial effect, yet IV antibiotics remain the standard of care absent evidence that PO options are clinically as efficacious...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323797/local-antibiotic-therapy-to-reduce-infection-after-operative-treatment-of-fractures-at-high-risk-of-infection-a-multicenter-randomized-controlled-trial-vanco-study
#9
Robert V OʼToole, Manjari Joshi, Anthony R Carlini, Clinton K Murray, Lauren E Allen, Daniel O Scharfstein, Joshua L Gary, Michael J Bosse, Renan C Castillo
A number of clinical studies in the spine literature suggest that the use of local vancomycin powder may substantially reduce surgical site infections (SSIs). These studies are primarily retrospective and observational and few focus on orthopaedic trauma patients. This study is a phase III, prospective, randomized, clinical trial to assess the efficacy of locally administered vancomycin powder in the prevention of SSI after fracture surgery. The primary goal of the VANCO Study is to compare the proportion of deep SSI 6 months after fracture fixation surgery...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323795/assessment-of-severe-extremity-wound-bioburden-at-the-time-of-definitive-wound-closure-or-coverage-correlation-with-subsequent-postclosure-deep-wound-infection-bioburden-study
#10
Michael J Bosse, Clinton K Murray, Anthony R Carlini, Reza Firoozabadi, Theodore Manson, Daniel O Scharfstein, Joseph C Wenke, Mary Zadnik, Renan C Castillo
Infection remains the most common and significant complication after high-energy fractures. The Bioburden Study is a multicenter, prospective, observational cohort study of wound bacterial bioburden and antibiotic care in severe open lower extremity fractures. The aims of this study are to (1) characterize the contemporary extremity wound "bioburden" at the time of definitive wound closure; (2) determine the concordance between polymerase chain reaction results and hospital microbiology; (3) determine, among those who develop deep infections, the concordance between the pathogens at wound closure and at deep infection; and (4) compare the probability of deep infection between those who did and did not receive an appropriate course of antibiotics based on bioburden at the time of wound closure...
April 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323791/obesity-is-associated-with-high-peri-operative-complications-among-surgically-treated-intertrochanteric-fracture-of-the-femur
#11
Harish Kempegowda, Raveesh Richard, Amrut Borade, Akhil Tawari, Graham Jove, Michael Suk, Abby Howenstein, Erik N Kubiak, Vanessa Rojas Sotomayor, Kenneth Koval, Frank A Liporace, Nirmal Tejwani, Daniel S Horwitz
OBJECTIVES: The purpose of this study was to document the complications among obese patients who underwent surgical fixation for intertrochanteric femur fractures and to compare with non-obese patients. DESIGN: Retrospective cohort study SETTING:: Four level I trauma centers. PATIENTS: 1078 intertrochanteric femur fracture patients INTERVENTIONS:: None MAIN OUTCOME MEASURES:: Patient and fracture characteristics, surgical duration, surgical delay intra-operative and post-operative complications, inpatient mortality and length of stay...
March 8, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28323545/creation-of-a-bioengineered-skin-flap-scaffold-with-a-perfusable-vascular-pedicle
#12
Bernhard J Jank, Jeremy Goverman, Jacques P Guyette, Jon M Charest, Mark A Randolph, Glenn R Gaudette, Joshua R Gershlak, Martin Purschke, Emilia Javorsky, Rosalynn M Nazarian, David A Leonard, Curtis L Cetrulo, William G Austen, Harald Christian Ott
Full thickness skin loss is a challenging problem due to limited reconstructive options, demanding 75 million surgical procedures annually in the United States. Autologous skin grafting is the gold standard treatment, but results in donor site morbidity and poor aesthetics. Numerous skin substitutes are available on the market to date, however, none truly function as full thickness skin due to their lack of a vascular network. The creation of an autologous full thickness skin analogue with a vascular pedicle would result in a paradigm shift in the management of wounds and in reconstruction of full thickness skin defects...
March 21, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28321991/atomic-layer-deposition-of-a-silver-nanolayer-on-advanced-titanium-orthopedic-implants-inhibits-bacterial-colonization-and-supports-vascularized-de-novo-bone-ingrowth
#13
Aine Devlin-Mullin, Naomi M Todd, Zahra Golrokhi, Hua Geng, Moritz A Konerding, Nigel G Ternan, John A Hunt, Richard J Potter, Chris Sutcliffe, Eric Jones, Peter D Lee, Christopher A Mitchell
Joint replacement surgery is associated with significant morbidity and mortality following infection with either methicillin-resistant Staphylococcus aureus (MRSA) or Staphylococcus epidermidis. These organisms have strong biofilm-forming capability in deep wounds and on prosthetic surfaces, with 10(3) -10(4) microbes resulting in clinically significant infections. To inhibit biofilm formation, we developed 3D titanium structures using selective laser melting and then coated them with a silver nanolayer using atomic layer deposition...
March 21, 2017: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/28320094/lncrna-meg3-had-anti-cancer-effects-to-suppress-pancreatic-cancer-activity
#14
Lei Gu, Jiaqiang Zhang, Minmin Shi, Qian Zhan, Baiyong Shen, Chenghong Peng
AIM: The aim of this study was to explain the mechanism of lncRNA MEG 3 in pancreatic cancer. METHODS: We were collecting 30 pancreatic cancer patients, taking the sample from these patients. We measured the PI3K protein expressions from 30 patients by IHC and WB methods and MEG 3 expression by RT-PCR, and analyzed the relationship between PI3K protein expression and pancreatic cancer patients' clinical pathology and the correlation between lncRNA MEG 3 and PI3K...
March 16, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28320072/constitutive-androstane-receptor-regulates-the-intestinal-mucosal-response-to-injury
#15
Grace M Hudson, Kyle L Flannigan, Sarah L Erickson, Fernando A Vicentini, Alexandra Zamponi, Christina L Hirota, Laurie Alston, Christophe Altier, Subrata Ghosh, Kevin P Rioux, Sridhar Mani, Thomas K Chang, Simon A Hirota
BACKGROUND AND PURPOSE: The pathogenesis of the inflammatory bowel diseases(IBD), composed of Crohn's disease(CD) and ulcerative colitis(UC), involves aberrant interactions between a genetically susceptible individual, their microbiota and environmental factors. Alterations in xenobiotic receptor expression and function are associated with increased risk for IBD. In the current study, we assessed the role of the constitutive androstane receptor(CAR), a xenobiotic receptor closely related to the pregnane X receptor, in the regulation of intestinal mucosal homeostasis...
March 20, 2017: British Journal of Pharmacology
https://www.readbyqxmd.com/read/28320052/soft-tissue-infections-from-fish-spike-wounds-normal-commensal-bacteria-are-more-common-than-marine-pathogens
#16
Hannah Collins, Kin Mun Lee, Paul T-Y Cheng, Sarah Hulme
BACKGROUND: A fish spike injury can be sustained by anyone handling fish; during fishing, meal preparation or in retail. Case reports of fish spikes inoculating victims with virulent marine-specific pathogens and causing systemic illness led us to question whether empirical treatment of these injuries with amoxicillin and clavulanic acid is adequate. METHODS: This 2-year prospective observational study was conducted at Middlemore Hospital, Auckland, New Zealand...
March 20, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28319828/genistein-affects-proliferation-and-migration-of-bovine-oviductal-epithelial-cells
#17
Daniela C García, Pablo A Valdecantos, Dora C Miceli, Mariela Roldán-Olarte
Genistein is one of the most abundant isoflavones in soybean. This molecule induces cell cycle arrest and apoptosis in different normal and cancer cells. Genistein has been of considerable interest due to its adverse effects on bovine reproduction, altering estrous cycle, implantation and fetal development and producing subfertility or infertility. The objective of this work was to study the effects of genistein on the expression of selected genes involved in the regulation of cell cycle and apoptosis. Primary cultures of bovine oviductal epithelial cells (BOEC) were treated with different genistein concentrations (0...
March 8, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28319822/comparison-of-intravenous-versus-topical-tranexamic-acid-in-primary-total-hip-and-knee-arthroplasty-an-updated-meta-analysis
#18
REVIEW
Jinwei Xie, Qinsheng Hu, Qiang Huang, Jun Ma, Yiting Lei, Fuxing Pei
BACKGROUND: The appropriate route for administering tranexamic acid in primary total hip (THA) and knee arthroplasty (TKA) remains controversial. The purpose of this meta-analysis was to compare the efficacy and safety of topical or intravenous tranexamic acid. METHODS: PubMed, EMBASE, and the Cochrane Library databases were systematically searched for randomized controlled trials (RCTs) comparing topical and intravenous tranexamic acid following primary THA or TKA...
March 10, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28319612/colony-stimulating-factor-1-receptor-is-a-central-component-of-the-foreign-body-response-to-biomaterial-implants-in-rodents-and-non-human%C3%A2-primates
#19
Joshua C Doloff, Omid Veiseh, Arturo J Vegas, Hok Hei Tam, Shady Farah, Minglin Ma, Jie Li, Andrew Bader, Alan Chiu, Atieh Sadraei, Stephanie Aresta-Dasilva, Marissa Griffin, Siddharth Jhunjhunwala, Matthew Webber, Sean Siebert, Katherine Tang, Michael Chen, Erin Langan, Nimit Dholokia, Raj Thakrar, Meirigeng Qi, Jose Oberholzer, Dale L Greiner, Robert Langer, Daniel G Anderson
Host recognition and immune-mediated foreign body response to biomaterials can compromise the performance of implanted medical devices. To identify key cell and cytokine targets, here we perform in-depth systems analysis of innate and adaptive immune system responses to implanted biomaterials in rodents and non-human primates. While macrophages are indispensable to the fibrotic cascade, surprisingly neutrophils and complement are not. Macrophages, via CXCL13, lead to downstream B cell recruitment, which further potentiated fibrosis, as confirmed by B cell knockout and CXCL13 neutralization...
March 20, 2017: Nature Materials
https://www.readbyqxmd.com/read/28319529/the-notch-signaling-system-is-involved-in-the-regulation-of-reparative-angiogenesis-in-the-zone-of-stasis
#20
Ozan Luay Abbas, Orhan Özatik, Yunus Kasm Terzi, Fikriye Yasemin Özatik, Rukiye Nar, Gamze Turna
The Notch pathway ligand Delta-like 4 (Dll4) functions as an antiangiogenic factor, inhibiting vascular endothelial growth factor (VEGF)-induced angiogenesis. This function is documented in tumor and embryonic vasculature. However, its implication in burn wounds remains unexplored. Our objective was to explore the involvement of the Notch in the healing of zone of stasis burns. We hypothesized that anti-Dll4 therapy would prevent progressive necrosis in the stasis zone by promoting angiogenesis. Burns were created in 21 rats using the comb burn model...
March 13, 2017: Journal of Burn Care & Research: Official Publication of the American Burn Association
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