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https://www.readbyqxmd.com/read/28431416/caring-for-critically-injured-children-an-analysis-of-56-pediatric-damage-control-laparotomies
#1
Miguel A Villalobos, Joshua P Hazelton, Rachel L Choron, Lisa Capano-Wehrle, Krystal Hunter, John P Gaughan, Steven E Ross, Mark J Seamon
BACKGROUND: Injury is the leading cause of death in children under 18 years. Damage control principles have been extensively studied in adults but remain relatively unstudied in children. Our primary study objective was to evaluate the use of damage control laparotomy (DCL) in critically injured children. METHODS: An American College of Surgeons-verified Level 1 trauma center review (1996-2013) of pediatric trauma laparotomies was undertaken. Exclusion criteria included: age older than 18 years, laparotomy for abdominal compartment syndrome or delayed longer than 2 hours after admission...
May 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28396222/activin-b-regulates-adipose-derived-mesenchymal-stem-cells-to-promote-skin-wound-healing-via-activation-of-the-mapk-signaling-pathway
#2
Lei Zhang, Pengcheng Xu, Xueer Wang, Min Zhang, Yuan Yan, Yinghua Chen, Lu Zhang, Lin Zhang
Adipose-derived stem cells (ADSCs) are multipotent stromal cells that can differentiate into a variety of cell types, including skin cells, and they can provide an abundant source of cells for skin tissue engineering and skin wound healing. The purpose of this study is to explore the therapeutic effects of activin B in combination with ADSCs and the possible signaling mechanism. In this study, we found that activin B was able to promote ADSC migration by inducing actin stress fiber formation in vitro. In vivo, activin B in combination with ADSCs was capable of enhancing α-SMA expression and wound closure...
April 8, 2017: International Journal of Biochemistry & Cell Biology
https://www.readbyqxmd.com/read/28389357/abietic-acid-isolated-from-pine-resin-resina-pini-enhances-angiogenesis-in-huvecs-and-accelerates-cutaneous-wound-healing-in-mice
#3
Jun Yeon Park, Yun Kyung Lee, Dong-Soo Lee, Jeong-Eun Yoo, Myoung-Sook Shin, Noriko Yamabe, Su-Nam Kim, Seulah Lee, Ki Hyun Kim, Hae-Jeung Lee, Seok Sun Roh, Ki Sung Kang
ETHNOPHARMACOLOGICAL RELEVANCE: Resin known as Resina Pini is listed in the Korean and Japanese pharmacopoeias and has been used for treating skin wounds and inflammation. Resin is composed of more than 50% abietic acid and 10% neutral substances. OBJECTIVE: In the present study, the wound-healing effects of abietic acid and the possible underlying mechanism of action were investigated in various in vitro and in vivo models. MATERIALS AND METHODS: The effects of abietic acid on tube formation and migration were measured in human umbilical vein vascular endothelial cells (HUVECs)...
April 4, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28337222/a-conditioned-medium-of-umbilical-cord-mesenchymal-stem-cells-overexpressing-wnt7a-promotes-wound-repair-and-regeneration-of-hair-follicles-in-mice
#4
Liang Dong, Haojie Hao, Jiejie Liu, Dongdong Ti, Chuan Tong, Qian Hou, Meirong Li, Jingxi Zheng, Gang Liu, Xiaobing Fu, Weidong Han
Mesenchymal stem cells (MSCs) can affect the microenvironment of a wound and thereby accelerate wound healing. Wnt proteins act as key mediators of skin development and participate in the formation of skin appendages such as hair. The mechanisms of action of MSCs and Wnt proteins on skin wounds are largely unknown. Here, we prepared a Wnt7a-containing conditioned medium (Wnt-CM) from the supernatant of cultured human umbilical cord-MSCs (UC-MSCs) overexpressing Wnt7a in order to examine the effects of this CM on cutaneous healing...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28303029/tmf-and-glycitin-act-synergistically-on-keratinocytes-and-fibroblasts-to-promote-wound-healing-and-anti-scarring-activity
#5
Ga Young Seo, Yoongho Lim, Dongsoo Koh, Jung Sik Huh, Changlim Hyun, Young Mee Kim, Moonjae Cho
Keratinocyte-fibroblast interactions are critical for skin repair after injury. During the proliferative phase of wound healing, proliferation, migration and differentiation of these cells are the major mechanisms leading to tissue remodeling. We have previously reported that glycitin, a major soy isoflavone, stimulates dermal fibroblast proliferation; and the phytochemical, 4',6,7-trimethoxyisoflavone (TMF), induces migration of HaCaT keratinocyte cells. We therefore investigated whether these compounds display synergistic effects on skin cells during wound healing in vitro and in vivo...
March 17, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28256293/use-of-a-home-vacuum-assisted-closure-device-in-the-burn-population-is-both-cost-effective-and-efficacious
#6
Oren P Mushin, Jarrod T Bogue, Mica D Esquenazi, Nicole Toscano, Derek E Bell
INTRODUCTION: The vacuum assisted closure device (VAC) improves wound-healing when utilized as a bolster to secure split thickness skin grafts (STSG). Patients typically remain hospitalized for VAC therapy; however, home VACs (hVAC) are now available. Limited studies examine burns treated with hVAC as a STSG bolster. METHOD: A retrospective study of records from an ABA verified regional burn center was conducted over 23 months. Patients included STSGs for burn. Data points included demographics, burn mechanism and location, graft characteristics, hospital length of stay (LOS), and time to heal...
February 27, 2017: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/28231262/oleanolic-acid-induces-migration-in-mv1lu-and-mda-mb-231-epithelial-cells-involving-egf-receptor-and-map-kinases-activation
#7
Ángel Bernabé-García, David Armero-Barranco, Sergio Liarte, María Ruzafa-Martínez, Antonio Jesús Ramos-Morcillo, Francisco José Nicolás
During wound healing, skin function is restored by the action of several cell types that undergo differentiation, migration, proliferation and/or apoptosis. These dynamics are tightly regulated by the evolution of the extra cellular matrix (ECM) contents along the process. Pharmacologically active flavonoids have shown to exhibit useful physiological properties interesting in pathological states. Among them, oleanolic acid (OA), a pentacyclic triterpene, shows promising properties over wound healing, as increased cell migration in vitro and improved wound resolution in vivo...
2017: PloS One
https://www.readbyqxmd.com/read/28210627/hyperforin-hp-%C3%AE-cyclodextrin-enhances-mechanosensitive-ca-2-signaling-in-hacat-keratinocytes-and-in-atopic-skin-ex-vivo-which-accelerates-wound-healing
#8
Hiroya Takada, Jun Yonekawa, Masami Matsumoto, Kishio Furuya, Masahiro Sokabe
Cutaneous wound healing is accelerated by mechanical stretching, and treatment with hyperforin, a major component of a traditional herbal medicine and a known TRPC6 activator, further enhances the acceleration. We recently revealed that this was due to the enhancement of ATP-Ca(2+) signaling in keratinocytes by hyperforin treatment. However, the low aqueous solubility and easy photodegradation impede the topical application of hyperforin for therapeutic purposes. We designed a compound hydroxypropyl-β-cyclodextrin- (HP-β-CD-) tetracapped hyperforin, which had increased aqueous solubility and improved photoprotection...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28209525/stromal-vascular-fraction-shows-robust-wound-healing-through-high-chemotactic-and-epithelialization-property
#9
Dong-Sic Chae, Seongho Han, Mina Son, Sung-Whan Kim
BACKGROUND: Although human stromal vascular fraction (SVF) has been regarded as an attractive stem cell source, its therapeutic mechanism in wound healing has not been fully elucidated. AIMS: In this study, we investigated the molecular characteristics and therapeutic property of SVF for wound healing. METHODS: Microarray data showed that SVF cells are enriched with a higher level of wound healing or epithelium development-related genes and micro RNA...
February 13, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28191338/accelerated-burn-wound-closure-in-mice-with-a-new-formula-based-on-traditional-medicine
#10
Mehrnaz Mehrabani, Seyyed Mohsen Seyyedkazemi, Mohammad Hadi Nematollahi, Elham Jafari, Mitra Mehrabani, Mohammad Mehdipour, Zahra Sheikhshoaee, Ali Mandegary
BACKGROUND: A combination of the oils of sesame, hemp, wild pistachio, and walnut has been used for treatment of skin disorders, including wound burns, in some parts of Kerman, Iran. Evaluation of this remedy in the form of a pharmaceutical formulation in animal models can pave the way for its future application in wound burn healing in humans. OBJECTIVES: This experimental study investigated the healing potential of a new formula (NF) based on folk medicine from Iran for the treatment of third degree burns in mice...
November 2016: Iranian Red Crescent Medical Journal
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
#11
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/28144716/bicompartmental-individualized-knee-replacement-use-of-patient-specific-implants-and-instruments-iduo%C3%A2
#12
A F Steinert, J Beckmann, B M Holzapfel, M Rudert, J Arnholdt
OBJECTIVE: Bicompartmental knee replacement in patients with combined osteoarthritis (OA) of the medial or lateral and patellofemoral compartment. Patient-specific instruments and implants (ConforMIS iDuo™) with a planning protocol for optimal implant fit. INDICATIONS: Bicompartmental OA of the knee (Kellgren & Lawrence stage IV) affecting both the medial or lateral and patellofemoral compartment after unsuccessful conservative or joint-preserving surgery. CONTRAINDICATIONS: Tricompartmental OA, knee ligament instabilities, knee deformities >15° (varus, valgus, extension deficit)...
February 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28125663/il-22r-ligands-il-20-il-22-and-il-24-promote-wound-healing-in-diabetic-db-db-mice
#13
Ganesh Kolumam, Xiumin Wu, Wyne P Lee, Jason A Hackney, Jose Zavala-Solorio, Vineela Gandham, Dimitry M Danilenko, Puneet Arora, Xiaoting Wang, Wenjun Ouyang
Diabetic foot ulcers (DFU) are one of the major complications in type II diabetes patients and can result in amputation and morbidity. Although multiple approaches are used clinically to help wound closure, many patients still lack adequate treatment. Here we show that IL-20 subfamily cytokines are upregulated during normal wound healing. While there is a redundant role for each individual cytokine in this subfamily in wound healing, mice deficient in IL-22R, the common receptor chain for IL-20, IL-22, and IL-24, display a significant delay in wound healing...
2017: PloS One
https://www.readbyqxmd.com/read/28110004/physiological-responses-associated-with-cultural-attachment
#14
Wei Jie Yap, George I Christopoulos, Ying-Yi Hong
Cultural attachment (CA) suggests that cultural symbols can function as attachment figures, in a similar way to prototypical maternal attachment figures. In order to further understand the psychophysiological mechanisms of CA, we examine whether cultural symbols regulate peripheral physiological indicators of arousal in response to symbolic threats. We supraliminally expose participants to neutral or threatening stimuli, followed by the subliminal presentation of CA and control images, while recording their Skin Conductance Responses (SCR)...
January 18, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28097936/experimental-study-on-tissue-phantoms-to-understand-the-effect-of-injury-and-suturing-on-human-skin-mechanical-properties
#15
Arnab Chanda, Vinu Unnikrishnan, Zachary Flynn, Kim Lackey
Skin injuries are the most common type of injuries occurring in day-to-day life. A skin injury usually manifests itself in the form of a wound or a cut. While a shallow wound may heal by itself within a short time, deep wounds require surgical interventions such as suturing for timely healing. To date, suturing practices are based on a surgeon's experience and may vary widely from one situation to another. Understanding the mechanics of wound closure and suturing of the skin is crucial to improve clinical suturing practices and also to plan automated robotic surgeries...
January 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28017831/stress-signals-mediated-by-membranous-glucocorticoid-receptor-activate-plc-pkc-gsk-3%C3%AE-%C3%AE-catenin-pathway-to%C3%A2-inhibit-wound-closure
#16
Ivan Jozic, Sasa Vukelic, Olivera Stojadinovic, Liang Liang, Horacio A Ramirez, Irena Pastar, Marjana Tomic Canic
Glucocorticoids (GCs), key mediators of stress signals, are also potent wound healing inhibitors. To understand how stress signals inhibit wound healing, we investigated the role of membranous glucocorticoid receptor (mbGR) by using cell-impermeable BSA-conjugated dexamethasone. We found that mbGR inhibits keratinocyte migration and wound closure by activating a Wnt-like phospholipase (PLC)/ protein kinase C (PKC) signaling cascade. Rapid activation of mbGR/PLC/PKC further leads to activation of known biomarkers of nonhealing found in patients, β-catenin and c-myc...
May 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28012327/incarcerated-and-eventrated-abdominal-wall-hernia-reconstruction-with-autologous-double-layer-dermal-graft-in-the-field-of-purulent-peritonitis-a-case-report
#17
Gábor Martis, Máté Rózsahegyi, János Deák, László Damjanovich
INTRODUCTION: Double-layer dermal grafts are used for the management of complicated abdominal wall hernias in obese, high risk patients. The method has not yet been used in case of emergency in septic/dirty environment. CASE REPORT: A 76-year old female patient (BMI 36.7kg/m(2)) was admitted with mechanical bowel obstruction and sepsis caused by a third time recurred, incarcerated and eventrated abdominal wall hernia. During the emergency surgery perforation of the terminal ileum and the ascending colon was detected, along with a feculent peritonitis and extended abdominal wall necrosis...
December 6, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28004651/autophagy-a-brief-overview-in-perspective-of-dermatology
#18
REVIEW
Rahul Nagar
Autophagy, literally meaning "self-eating," is an intracellular catabolic process of delivering cytosol and/or its specific content to the lysosomes for degradation.The resulting macromolecular constituents are recycled and utilized again by the cells. Basal level autophagy plays an important role in cellular homeostasis through the elimination of the old or damaged organelles, as well as aggregated intracellular proteins. Autophagy refers to sequestration of intact organelles along with a portion of cytosol, into a double-or multi-membrane structure known as phagophore, which elongates, and after closure, forms a vesicular structure known as the autophagosome...
December 20, 2016: Indian Journal of Dermatology, Venereology and Leprology
https://www.readbyqxmd.com/read/27997709/the-role-of-allogenic-keratin-derived-dressing-in-wound-healing-in-a-mouse-model
#19
Marek Konop, Dorota Sulejczak, Joanna Czuwara, Piotr Kosson, Aleksandra Misicka, Andrzej W Lipkowski, Lidia Rudnicka
Keratin is an interesting protein needed for wound healing and tissue recovery. We have recently proposed a new, simple and inexpensive method to obtain fur and hair keratin-derived biomaterials suitable for medical application. The aim of the study was to evaluate the role of the fur keratin-derived protein (FKDP) dressing in the allogenic full-thickness surgical skin wound model. The data obtained using scanning electron microscopy showed that employed processed biomaterial had higher surface porosity compared with control raw material...
January 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/27989746/tension-re-builds-biophysical-mechanisms-of-embryonic-wound-repair
#20
REVIEW
Teresa Zulueta-Coarasa, Rodrigo Fernandez-Gonzalez
Embryonic tissues display an outstanding ability to rapidly repair wounds. Epithelia, in particular, serve as protective layers that line internal organs and form the skin. Thus, maintenance of epithelial integrity is of utmost importance for animal survival, particularly at embryonic stages, when an immune system has not yet fully developed. Rapid embryonic repair of epithelial tissues is conserved across species, and involves the collective migration of the cells around the wound. The migratory cell behaviours associated with wound repair require the generation and transmission of mechanical forces, not only for the cells to move, but also to coordinate their movements...
December 15, 2016: Mechanisms of Development
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