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Wounds and injuries

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https://www.readbyqxmd.com/read/28212278/the-effect-of-the-human-peptide-ghk-on-gene-expression-relevant-to-nervous-system-function-and-cognitive-decline
#1
Loren Pickart, Jessica Michelle Vasquez-Soltero, Anna Margolina
Neurodegeneration, the progressive death of neurons, loss of brain function, and cognitive decline is an increasing problem for senior populations. Its causes are poorly understood and therapies are largely ineffective. Neurons, with high energy and oxygen requirements, are especially vulnerable to detrimental factors, including age-related dysregulation of biochemical pathways caused by altered expression of multiple genes. GHK (glycyl-l-histidyl-l-lysine) is a human copper-binding peptide with biological actions that appear to counter aging-associated diseases and conditions...
February 15, 2017: Brain Sciences
https://www.readbyqxmd.com/read/28210559/pyoderma-gangrenosum-following-autologous-breast-reconstruction
#2
Prateush Singh, Sami H Tuffaha, Sanford H Robbins, Steven C Bonawitz
Pyoderma gangrenosum (PG) is an uncommon disorder characterized by the development of painful cutaneous ulceration, commonly precipitated by dermal injury at surgical sites. It is a diagnostic challenge as it manifests as necrotizing wounds which are commonly misdiagnosed as postoperative wound infection or ischemia. We discuss the clinical features and histopathological findings that allow for rapid identification of PG following autologous breast reconstruction and suggest an algorithm to aid diagnosis.
February 2017: Gland Surgery
https://www.readbyqxmd.com/read/28207886/connective-tissue-growth-factor-is-not-necessary-for-haze-formation-in-excimer-laser-wounded-mouse-corneas
#3
Xiaodi Feng, Liya Pi, Sriniwas Sriram, Gregory S Schultz, Daniel J Gibson
We sought to determine if connective tissue growth factor (CTGF) is necessary for the formation of corneal haze after corneal injury. Mice with post-natal, tamoxifen-induced, knockout of CTGF were subjected to excimer laser phototherapeutic keratectomy (PTK) and the corneas were allowed to heal. The extent of scaring was observed in non-induced mice, heterozygotes, and full homozygous knockout mice and quantified by macrophotography. The eyes from these mice were collected after euthanization for re-genotyping to control for possible Cre-mosaicism...
2017: PloS One
https://www.readbyqxmd.com/read/28207824/evaluation-of-surgical-anti-adhesion-products-to-reduce-postsurgical-intra-abdominal-adhesion-formation-in-a-rat-model
#4
Long-Xiang Lin, Fang Yuan, Hui-Hui Zhang, Ni-Na Liao, Jing-Wan Luo, Yu-Long Sun
BACKGROUND: Adhesions frequently occur after abdominal surgery. Many anti-adhesion products have been used in clinic. However, the evidences are short for surgeons to reasonably choose the suitable anti-adhesion produces in clinical practice. This study provided such evidence by comparing the efficiency of five products to prevent abdominal adhesion formation in a rat model. METHODS: Fifty-six Sprague-Dawley rats were randomly divided into seven groups: sham-operation group, adhesion group, and five product groups (n = 8)...
2017: PloS One
https://www.readbyqxmd.com/read/28207787/hyaluronic-acid-synthesis-is-required-for-zebrafish-tail-fin-regeneration
#5
Xiaohu Ouyang, Nicholas J Panetta, Maya D Talbott, Alexander Y Payumo, Caroline Halluin, Michael T Longaker, James K Chen
Using genome-wide transcriptional profiling and whole-mount expression analyses of zebrafish larvae, we have identified hyaluronan synthase 3 (has3) as an upregulated gene during caudal fin regeneration. has3 expression is induced in the wound epithelium within hours after tail amputation, and its onset and maintenance requires fibroblast growth factor, phosphoinositide 3-kinase, and transforming growth factor-ß signaling. Inhibition of hyaluronic acid (HA) synthesis by the small molecule 4-methylumbelliferone (4-MU) impairs tail regeneration in zebrafish larvae by preventing injury-induced cell proliferation...
2017: PloS One
https://www.readbyqxmd.com/read/28205479/finger-trauma-due-to-surfing-a-case-series-and-analysis-of-fracture-patterns
#6
A C J Ruijs, L C Langenberg, J Rezzouk
BACKGROUND: The purpose of this study is to research the type of lesions to the hand and fingers in the sport of surfing. METHODS: All surfing related hand injuries reported to our hospital between January 2008 and September 2015 were analyzed. RESULTS: Thirty-seven patient files held a clear description of a trauma related to the surf sport. We found three finger sprains, five wounds needing suture, including one digital nerve lesion and one ring finger with flexor tendon injury, three fingertip amputations and twenty-six digital fractures...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28203538/robotic-mitral-valve-repair-for-degenerative-posterior-leaflet-prolapse
#7
Hoda Javadikasgari, Rakesh M Suri, Bassman Tappuni, Ashley M Lowry, Tomislav Mihaljevic, Stephanie Mick, A Marc Gillinov
BACKGROUND: Robotic mitral valve (MV) repair is the least invasive surgical approach to the MV and provides unparalleled access to the valve. We sought to assess technical aspects and clinical outcomes of robotic MV repair for isolated posterior leaflet prolapse by examining the first 623 such cases performed in a tertiary care center. METHODS: We reviewed the first 623 patients (mean age 56±9.7 years) with isolated posterior leaflet prolapse who underwent robotic primary MV repair from 01/2006 to 11/2013...
January 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28203250/the-effects-of-punica-granatum-flower-extract-on-skin-injuries-induced-by-burn-in-rats
#8
Ebrahim Nasiri, Seyed Jalal Hosseinimehr, Jafar Akbari, Mohammad Azadbakht, Soheil Azizi
Background. We compared the efficacy of P. granatum (P) flower extract with that of silver sulfadiazine (SSD) for treating thermal burn injuries in rats. Methods. Ten Wistar rats in each group were topically given base cream, normal saline, cream containing 1% SSD, or creams containing 5% or 10% Punica granatum flower extract. The treatments were administered once daily until complete wound healing was observed. The wound area and healing time were assessed. In addition, percentage wound contraction and histopathological characteristics such as neovascularization and collagen formation were determined...
2017: Advances in Pharmacological Sciences
https://www.readbyqxmd.com/read/28198336/managing-tissue-viability-issues-in-patients-with-cancer-approaching-the-end-of-life
#9
Kenneth Robert Ripley, Mark Collier
This article provides an overview of tissue viability issues related to the care of patients with cancer who are approaching the end of life. Altered physiology as a result of various factors, including nutrition, medication and radiotherapy, is identified. The article discusses the presentation and treatment of cutaneous radiation injury, malignant wounds, pressure ulcers and Skin Changes At Life's End (SCALE), an acronym used to describe a set of clinical phenomena associated with skin changes in patients approaching the end of life, and makes recommendations for practice...
February 15, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28198058/ethno-herbal-medico-in-wound-repair-an-incisive-review
#10
REVIEW
Urmimala Das, Sudhanshu Shekhar Behera, Krishna Pramanik
Wound healing/cicatrization is a complex series of intricate processes that involve renewal of skin/epidermis after injury. A large number of ethno-medicinal plants/plant extracts are used by tribal and folklore traditions in developing world for the treatment of wounds, burns and cuts in distinct appearances. Moreover, plants/plant extracts have a significant history and successful clinical track record as indigenous drugs in wound repair systems. This review provides detailed information on molecular and cellular mechanism of plant/plant extracts on wound healing applications and further analyses the opportunities and scope with its future openings and prospects owing to the multifaceted challenges attached with neo-tissue regeneration...
February 15, 2017: Phytotherapy Research: PTR
https://www.readbyqxmd.com/read/28197297/reconstruction-of-an-anterior-cervical-necrotizing-fasciitis-defect-using-a-biodegradable-polyurethane-dermal-substitute
#11
Marcus Jd Wagstaff, Yugesh Caplash, John E Greenwood
Introduction: Although we have previously described the use of a novel polyurethane biodegradable dermal substitute in the reconstruction of 20 free flap donor sites, and extensive cutaneous defects, including a large area of exposed calvarium secondary to burn injury, our experience with this material now extends to 35 free flap donor site reconstructions and 13 major or complex burns. Methods: The polyurethane material (NovoSorb BTM; PolyNovo Biomaterials Pty Ltd, Port Melbourne, Victoria, Australia) was recently employed in another complex wound scenario, implanted into a large anterior cervical cutaneous and soft-tissue defect remaining after serial radical debridement for necrotizing fasciitis...
2017: Eplasty
https://www.readbyqxmd.com/read/28193608/dectin-2-deficiency-modulates-th1-differentiation-and-improves-wound-healing-after-myocardial-infarction
#12
Xiaoxiang Yan, Hang Zhang, Qin Fan, Jian Hu, Rong Tao, Qiujing Chen, Yoichiro Iwakura, Weifeng Shen, Lin Lu, Qi Zhang, Ruiyan Zhang
Rationale: Macrophages are involved in wound healing after myocardial infarction (MI). The role of Dectin-2, a pattern recognition receptor mainly expressed on myeloid cells, in the infarct healing remains unknown. Objective: To determine whether Dectin-2 signaling is involved in the healing process and cardiac remodeling after MI, and to elucidate the underlying molecular mechanisms. Methods and Results: In a mouse model of permanent coronary ligation, Dectin-2, mainly expressed in macrophages, was shown to be increased in the early phase after MI...
February 13, 2017: Circulation Research
https://www.readbyqxmd.com/read/28192955/microfluidic-migration-and-wound-healing-assay-based-on-mechanically-induced-injuries-of-defined-and-highly-reproducible-areas
#13
Drago Sticker, Sarah Lechner, Christian Jungreuthmayer, Jürgen Zanghellini, Peter Ertl
All cell migration and wound healing assays are based on the inherent ability of adherent cells to move into adjacent cell-free areas, thus providing information on cell culture viability, cellular mechanisms and multicellular movements. Despite their widespread use for toxicological screening, biomedical research and pharmaceutical studies, to date no satisfactory technological solutions are available for the automated, miniaturized and integrated induction of defined wound areas. To bridge this technological gap, we have developed a lab-on-a-chip capable of mechanically inducing circular cell-free areas within confluent cell layers...
January 31, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28191776/clinical-grade-isolated-human-kidney-perivascular-stromal-cells-as-an-organotypic-cell-source-for-kidney-regenerative-medicine
#14
Daniëlle G Leuning, Marlies E J Reinders, Joan Li, Anna J Peired, Ellen Lievers, Hetty C de Boer, Willem E Fibbe, Paola Romagnani, Cees van Kooten, Melissa H Little, Marten A Engelse, Ton J Rabelink
Mesenchymal stromal cells (MSCs) are immunomodulatory and tissue homeostatic cells that have shown beneficial effects in kidney diseases and transplantation. Perivascular stromal cells (PSCs) identified within several different organs share characteristics of bone marrow-derived MSCs (BM-MSCs). These PSCs may also possess tissue-specific properties and play a role in local tissue homeostasis. We hypothesized that human kidney-derived PSCs (hkPSCs) would elicit improved kidney repair in comparison with BM-MSCs...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28190633/novel-5-arylthio-5h-chromenopyridines-as-a-new-class-of-anti-fibrotic-agents
#15
Renukadevi Patil, Anandita Ghosh, Phoebus Sun Cao, Roger D Sommer, Kyle A Grice, Gulam Waris, Shivaputra Patil
Liver fibrosis is a critical wound healing response to chronic liver injury such as hepatitis C virus (HCV) infection. If persistent, liver fibrosis can lead to cirrhosis and hepatocellular carcinoma (HCC). The development of new therapies for preventing liver fibrosis and its progression to cancer associated with HCV infection remains a critical challenge. Identification of novel anti-fibrotic compounds will provide opportunities for innovative therapeutic intervention of HCV-mediated liver fibrosis. We designed and synthesized a focused set of 5-arylthio-5H-chromenopyridines as a new class of anti-fibrotic agents...
February 1, 2017: Bioorganic & Medicinal Chemistry Letters
https://www.readbyqxmd.com/read/28187042/can-methicillin-resistant-staphylococcus-aureus-silently-travel-from-the-gut-to-the-wound-and-cause-postoperative-infection-modeling-the-trojan-horse-hypothesis
#16
Monika A Krezalek, Sanjiv Hyoju, Alexander Zaborin, Emeka Okafor, Laxmi Chandrasekar, Vitas Bindokas, Kristina Guyton, Christopher P Montgomery, Robert S Daum, Olga Zaborina, Susan Boyle-Vavra, John C Alverdy
OBJECTIVE: To determine whether intestinal colonization with methicillin-resistant Staphylococcus aureus (MRSA) can be the source of surgical site infections (SSIs). BACKGROUND: We hypothesized that gut-derived MRSA may cause SSIs via mechanisms in which circulating immune cells scavenge MRSA from the gut, home to surgical wounds, and cause infection (Trojan Horse Hypothesis). METHODS: MRSA gut colonization was achieved by disrupting the microbiota with antibiotics, imposing a period of starvation and introducing MRSA via gavage...
February 9, 2017: Annals of Surgery
https://www.readbyqxmd.com/read/28185804/7-cyclopentyl-5-4-phenoxyphenyl-7h-pyrrolo-2-3-d-pyrimidin-4-ylamine-inhibits-the-proliferation-and-migration-of-vascular-smooth-muscle-cells-by-suppressing-erk-and-akt-pathways
#17
Hyang-Hee Seo, Sang Woo Kim, Chang Youn Lee, Kyu Hee Lim, Jiyun Lee, Soyeon Lim, Seahyoung Lee, Ki-Chul Hwang
Excessive vascular smooth muscle cell (VSMC) proliferation and migration after vascular injury significantly contributes to the development of occlusive vascular disease. Therefore, inhibiting the proliferation and migration of VSMCs is a validated therapeutic modality for occlusive vascular disease such as atherosclerosis and restenosis. In the present study, we screened chemical compounds for their anti-proliferative effects on VSMCs using multiple approaches, such as MTT assays, wound healing assays, and trans-well migration assays...
February 6, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28185748/validity-of-ultrasound-in-diagnosis-of-tendon-injuries-in-penetrating-extremity-trauma
#18
Narges Mohammadrezaei, Javad Seyedhosseini, Elnaz Vahidi
BACKGROUND: Tendon ruptures are common musculoskeletal injuries all around the world. Correct and timely diagnosis of tendon injuries is obviously important for improving the treatment and minimizing the community costs. Ultrasound is now being considered as one of useful modalities in this area. OBJECTIVE: The preset study is going to validate the diagnostic ability of ultrasound in tendon injuries induced by penetrating extremity trauma. METHODS: In this prospective, observational study, patients with penetrating extremity trauma and suspicion of tendon injuries were enrolled in our study...
January 27, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28185476/penetrating-chest-injuries-caused-by-swordfish-sword-used-as-a-weapon
#19
Assane Ndiaye, Magaye Gaye, Papa Salmane Ba, Souleymane Diatta, Momar Sokhna Diop, Mouhamadou Ndiaye
We report 5 cases of penetrating chest wounds caused by weapons made from swordfish swords, involving breakage of the sword that later appeared as a thoracic foreign body. The patients had been assaulted 2 days to 17 years earlier. Three of them had a chronic infected wound, one had a penetrating thoracic wound with hemopneumothorax, and one had a foreign body. Computed tomography showed a foreign body in the lung in 4 cases, with aortic penetration in one. The foreign body was removed via thoracotomy in all 4 patients, with aorta repair in one who presented later with a pseudoaneurysm...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28184363/a-comparison-of-self-inflicted-stab-wounds-versus-assault-induced-stab-wounds
#20
Sanghyun Ahn, Dong Jin Kim, Kwang Yeol Paik, Jae Hee Chung, Woo-Chan Park, Wook Kim, In Kyu Lee
BACKGROUND: Although self-inflicted and assault-induced knife injuries might have different mortality and morbidity rates, no studies have actually evaluated the importance of the cause of knife injuries in terms of patient outcomes and treatment strategies. OBJECTIVES: The aims of this study were to assess the difference between the outcomes of patients presenting with self-inflicted stab wounds (SISW) versus assault-induced stab wounds (AISW). PATIENTS AND METHODS: A retrospective review of the relevant electronic medical records was performed for the period between January 2000 and December 2012 for patients who were referred to the department of surgery for stab wounds by the trauma team...
November 2016: Trauma Monthly
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