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https://www.readbyqxmd.com/read/27911394/confirmation-of-myocardial-ischemia-and-reperfusion-injury-in-mice-using-surface-pad-electrocardiography
#1
Stephanie L C Scofield, Krishna Singh
Many animal models have been established for the study of myocardial remodeling and heart failure due to its status as the number one cause of mortality worldwide. In humans, a pathologic occlusion forms in a coronary artery and reperfusion of that occluded artery is considered essential to maintain viability of the myocardium at risk. Although essential for myocardial recovery, reperfusion of the ischemic myocardium creates its own tissue injury. The physiologic response and healing of an ischemia/reperfusion injury is different from a chronic occlusion injury...
November 24, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911364/an-intramedullary-locking-nail-for-standardized-fixation-of-femur-osteotomies-to-analyze-normal-and-defective-bone-healing-in-mice
#2
Tina Histing, Michael D Menger, Tim Pohlemann, Romano Matthys, Tobias Fritz, Patric Garcia, Moritz Klein
Bone healing models are essential to the development of new therapeutic strategies for clinical fracture treatment. Furthermore, mouse models are becoming more commonly used in trauma research. They offer a large number of mutant strains and antibodies for the analysis of the molecular mechanisms behind the highly differentiated process of bone healing. To control the biomechanical environment, standardized and well-characterized osteosynthesis techniques are mandatory in mice. Here, we report on the design and use of an intramedullary nail to stabilize open femur osteotomies in mice...
November 13, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911107/endovenous-and-perivenous-808-nm-laser-treatment-of-lower-limb-collateral-reticular-and-telangiectasiac-veins
#3
Walter Bugiantella, Bruno Bovani, Francesco Zini
BACKGROUND: Visible leg veins are not only a mere aesthetic problem, but may also be manifestation of altered microcirculation and superficial venous incompetency. Sclerotherapy is the first-line treatment for leg veins < 4 mm, but it often needs multiple sessions and sometimes fails. The main limitations of transcutaneous laser treatment are the diameter and the depth of the veins: the greater, the harder photothermolysis is, so that higher powers may lead to aesthetic complications...
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27911032/a-dermal-equivalent-engineered-with-tgf-%C3%AE-3-expressing-bone-marrow-stromal-cells-and-amniotic-membrane-cosmetic-healing-of-full-thickness-skin-wounds-in-rats
#4
Ali Samadikuchaksaraei, Ahmad Mehdipour, Mehryar Habibi Roudkenar, Javad Verdi, Mohammad Taghi Joghataei, Kamran As'adi, Fatemeh Amiri, Mozhgan Dehghan Harati, Mazaher Gholipourmalekabadi, Nushin Karkuki Osguei
Transforming growth factor beta-3 (TGF-β3) has been shown to decrease scar formation after scheduled topical applications to the cutaneous wounds. This study aimed to continuously deliver TGF-β3, during the early phase of wound healing, by engineering a dermal equivalent (DE) using TGF-β3 expressing bone marrow stromal cells (BM-SCs) and human dehydrated amniotic membrane (hDAM). To engineer a DE, rat BM-SCs were seeded on the hDAM and TGF-β3 was transiently transfected into the BM-SCs using a plasmid vector...
December 2016: Artificial Organs
https://www.readbyqxmd.com/read/27910818/histomorphometric-and-transcriptome-evaluation-of-early-healing-bone-treated-with-a-novel-human-particulate-dentin-powder
#5
Yu-Chih Huang, Wei-Zhen Lew, Sheng-Wei Feng, Wei-Yi Lai, Yoshimitsu Abiko, Haw-Ming Huang
Human particulate dentin (HPD) shows potential as an alternative bone grafting material. However, the mechanism of bone healing at the molecular level after grafting with HPD is unclear. This study assessed the histological and global gene expression of bone tissues grafted with HPD. The HPD was prepared to 250-500 µm in size. X-ray diffraction (XRD) and energy dispersive x-ray spectroscopy (EDX) were performed to confirm the crystal structure, organic compound residues, and surface morphology, respectively...
December 2, 2016: Biomedical Materials
https://www.readbyqxmd.com/read/27910815/in-vitro-and-in-vivo-evaluations-of-a-novel-post-electrospinning-treatment-to-improve-the-fibrous-structure-of-chitosan-membranes-for-guided-bone-regeneration
#6
Hengjie Su, Kwei-Yu Liu, Anastasios Karydis, Daniel G Abebe, Chaoxi Wu, Kenneth M Anderson, Najib Ghadri, Pradeep Adatrow, Tomoko Fujiwara, Joel D Bumgardner
Electrospun chitosan membranes have been investigated for guided bone regeneration but are susceptible to swelling, dissolution, and loss of biomimetic nanofiber structure due to residual acid salts. A novel process was investigated for acidic salt removal from chitosan electrospun in 70% trifluoroacetic acid (TFA) by treating with triethylamine (TEA)/acetone and di-tert-butyl dicarbonate (tBOC) instead of the common Na2CO3 treatment. TFA salt removal and nanofiber structure stabilization were confirmed by EDS, FTIR, (19)F NMR and electron microscopy before and after soaking in water...
December 2, 2016: Biomedical Materials
https://www.readbyqxmd.com/read/27910727/tannin-based-adhesive-for-protection-of-colonic-anastomosis-in-the-open-abdomen
#7
Youming Deng, Jianan Ren, Guopu Chen, Gefei Wang, Guosheng Gu, Jieshou Li
: Background:This study was aimed to evaluate the effect of tannin acid- polyethylene glycol (TP) adhesive on the wound healing process of primary colonic anastomosis in the open abdomen (OA). MATERIALS AND METHODS: Adhesion strength test, degradation and hemostatic ability of TP were investigated. In a rat model, after standard colonic anastomoses, rats were divided into three groups: OA group; OA + FG (fibrin glue) group; OA + TP group. Five days after surgery, body weight, anastomotic bursting pressure (ABP), and histology of anastomotic tissue were evaluated...
December 2, 2016: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/27910059/gene-therapy-for-post-infarction-ventricular-tachycardia
#8
J Kevin Donahue
Cardiac arrhythmias are a leading cause of morbidity and mortality in the developed world. In particular, cardiac arrest or sudden cardiac death is the leading cause of death in these countries. Death generally results from a ventricular tachyarrhythmia, and pathology data have shown that cardiac arrest victims very frequently have evidence of coronary atherosclerosis with either acute ischemia or healed myocardial infarction. In this work, we describe an animal model that reproducibly has inducible ventricular tachyarrhythmias after healing of a myocardial infarction scar and a gene delivery method that allows gene transfer to the scar and surrounding myocardial tissues...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27909894/antimicrobial-photodynamic-therapy-vs-local-minocycline-in-addition-to-non-surgical-therapy-of-deep-periodontal-pockets-a-controlled-randomized-clinical-trial
#9
Laura Tabenski, Daniel Moder, Fabian Cieplik, Frederike Schenke, Karl-Anton Hiller, Wolfgang Buchalla, Gottfried Schmalz, Michael Christgau
OBJECTIVES: To investigate the additional influence of either antimicrobial photodynamic therapy (aPDT; Helbo® Photodynamic Systems) or local application of minocycline microspheres (MC; Arestin, OraPharma) on clinical and microbiological healing results in deep periodontal pockets (PPD ≥6 mm) following non-surgical periodontal therapy (SRP). MATERIALS AND METHODS: Forty-five patients with chronic periodontitis were evaluated: test group aPDT + SRP (n = 15), positive control group MC + SRP (n = 15), and negative control group SRP-alone (n = 15)...
December 1, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27909893/osteogain%C3%A2-loaded-onto-an-absorbable-collagen-sponge-induces-attachment-and-osteoblast-differentiation-of-st2-cells-in-vitro
#10
Richard J Miron, Masako Fujioka-Kobayashi, Yufeng Zhang, Anton Sculean, Benjamin Pippenger, Yoshinori Shirakata, Umadevi Kandalam, Maria Hernandez
OBJECTIVES: Dimensional changes of the alveolar bone following tooth extraction are a major challenge in daily dental practice. To limit bone loss, a variety of biomaterials including bone grafts, barrier membranes, and growth factors have been utilized either alone or in combination therapies to increase the speed and quality of new bone formation. The aim of the present in vitro study was to investigate the regenerative potential of Osteogain®, a new liquid carrier system of enamel matrix derivative (EMD) in combination with an absorbable collagen sponge (ACS) specifically designed for extraction socket healing...
December 1, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27909737/-attitudes-towards-psychotherapy-in-south-korea-and-germany-a%C3%A2-cross-cultural-comparative-study
#11
W Schulz, M A Shin, G Schmid-Ott
BACKGROUND: Due to the relatively recent introduction of psychotherapy in South Korea and against the background of collectivist and Confucian values, it has been suggested that South Koreans harbor more negative attitudes towards psychotherapy compared to Germans and that the social acceptance of psychotherapy is lower. METHODS: We compared the attitudes of 99 women from South Korea with 98 German women using the questionnaire on attitudes towards psychotherapeutic treatment (FEP)...
December 1, 2016: Der Nervenarzt
https://www.readbyqxmd.com/read/27909707/in-vitro-study-of-the-host-responses-to-model-biomaterials-via-a-fibroblast-macrophage-co-culture-system
#12
Guoying Zhou, Andrea Liedmann, Chandralekha Chatterjee, Thomas Groth
Surface properties are believed to play important roles in initial inflammatory and subsequent wound healing/fibrotic responses after implantation of biomaterials. To investigate the surface property effect in mediating these host responses, we used an in vitro fibroblast/macrophage co-culture model established with a cell migration chamber, and a series of self-assembling monolayers (SAMs) bearing different terminal groups as model surfaces to study the effect of surface properties on macrophage fusion, fibroblast attachment, spreading morphology, proliferation, outgrowth, as well as pro-(interleukin-6) and anti-(interleukin-10) inflammatory cytokine production, expression of ED-A fibronectin (FN) and alpha-smooth muscle actin (α-SMA)...
December 2, 2016: Biomaterials Science
https://www.readbyqxmd.com/read/27909688/the-danger-signal-extracellular-atp-is-an-inducer-of-fusobacterium-nucleatum-biofilm-dispersal
#13
Qinfeng Ding, Kai Soo Tan
Plaque biofilm is the primary etiological agent of periodontal disease. Biofilm formation progresses through multiple developmental stages beginning with bacterial attachment to a surface, followed by development of microcolonies and finally detachment and dispersal from a mature biofilm as free planktonic bacteria. Tissue damage arising from inflammatory response to biofilm is one of the hallmark features of periodontal disease. A consequence of tissue damage is the release of ATP from within the cell into the extracellular space...
2016: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/27909675/arthroscopic-primary-repair-of-proximal-anterior-cruciate-ligament-tears
#14
Gregory S DiFelice, Jelle P van der List
In a select group of patients with proximal anterior cruciate ligament (ACL) tears, primary repair can be a useful technique. Preservation of the native ACL may be advantageous for proprioceptive function and is thought to restore normal knee joint kinematics. The procedure is a less morbid and more conservative surgical approach to restore knee stability. Primary repair is preferably performed in the acute setting because of better healing capacity and tissue quality. We present the surgical technique of arthroscopic primary ACL repair with suture anchors in patients with proximal tears and excellent tissue quality...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909668/triple-row-modification-of-the-suture-bridge-technique-for-arthroscopic-rotator-cuff-repair
#15
Roger V Ostrander, Jarrod Smith, Michael Saper
Recent advances to improve outcomes in rotator cuff repair include using arthroscopic double-row suture-bridge techniques in an effort to reconstruct the rotator cuff footprint and improve fixation. However, when using this technique for larger tears, it can be difficult to get the lateral portion of the rotator cuff into an anatomic position. This report describes a triple-row modification of the suture-bridge technique that results in significantly more footprint contact area and contact pressure compared with the double-row and standard suture-bridge techniques...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909665/autologous-osteophyte-grafting-for-open-wedge-high-tibial-osteotomy
#16
Takenori Akiyama, Ken Okazaki, Taro Mawatari, Satoshi Ikemura, Shunsuke Nakamura
Osteophytes are physiological bony outgrowths that develop at the margins of the articular surfaces during the progression of osteoarthritis; they are associated with active endochondral bone formation processes and expressions of various growth factors. We believe they could be a source of bone grafts as a result of a potentially strong osteoinductive effect. Moreover, osteophytes can be easily harvested by arthroscopy in patients undergoing open-wedge high tibial osteotomy (OW-HTO) for medial unicompartmental knee osteoarthritis...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27909641/a-case-series-of-complex-recalcitrant-wounds-treated-with-epidermal-grafts-harvested-from-an-automated-device
#17
Stephen S Cai, Arvind U Gowda, Karan Chopra, Rachel Waldman, Ronald P Silverman, Yvonne M Rasko
INTRODUCTION: Epidermal grafting has several advantages over full-thickness or split-thickness grafts in the treatment of complex non-healing wounds. These include the low risk of donor site complications, minimal patient discomfort, and abstention from the operating room. Traditionally, the lack of reliable epidermal harvesting techniques has limited its clinical utilization. The development of an automated suction blister epidermal graft (SBEG) harvesting device may facilitate clinical utilization of this technique...
October 30, 2016: Curēus
https://www.readbyqxmd.com/read/27909640/treating-fasciotomy-wounds-with-negative-pressure-wound-therapy-with-instillation-and-dwell-time-npwti-d
#18
Priscilla Lee
Acute compartment syndrome (ACS) is a serious complication of lower-extremity trauma caused by accidents or post-procedure complications. ACS is characterized by increased pressure within the compartment, resulting in reduced blood flow, tissue hypoxia, and tissue necrosis. Fasciotomies to relieve pressure and debridement of necrotic tissue comprise primary treatment. My purpose is to present initial experience using negative pressure wound therapy with instillation and dwell time (NPWTi-d)* to treat fasciotomy wounds in two patients...
October 28, 2016: Curēus
https://www.readbyqxmd.com/read/27909615/the-histopathological-evaluation-of-healing-effects-of-vitamin-c-administered-before-methotrexate-therapy-on-testicular-injury-induced-by-methotrexate
#19
Aysun Sayılmaz, Yasemin Yuyucu Karabulut, Aydan Özgörgülü
OBJECTIVE: Methotrexate (MTX) leads to acute toxic side effects in tissues or organs containing rapidly dividing cells such as seminiferous tubules. In this study, we investigated the protective effects of vitamin C against MTX-induced injury in rat testis. MATERIAL AND METHODS: A total of 31 rats were divided into 4 groups, including the control group. The study was completed within 4 weeks and the rats received daily doses of 2 mL/kg SF, 100 mg/kg vitamin C and 10 mg/kg/day MTX i...
December 2016: Turkish Journal of Urology
https://www.readbyqxmd.com/read/27909570/need-for-accessible-infertility-care-in-ghana-the-patients-voice
#20
Nana Yaw Osei
According to the Ghana Statistical Service (GSS) infertility and childlessness are the most important reason for divorce in Ghana. The traditional Ghanaian society is pro-natal and voluntary childlessness is very uncommon. Patient groups are almost non-existent in Sub-Saharan Africa, aggravating the situation of childless couples. Due to the lack of enough and affordable high quality infertility services, many women resort to traditional healing, witchcraft and spiritual mediation. Considering the severe sociocultural and economic consequences of childlessness, especially for women, there is an urgent need for accessible and affordable high quality infertility care in Ghana...
June 27, 2016: Facts, Views & Vision in ObGyn
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