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https://www.readbyqxmd.com/read/29668038/photodynamic-therapy-induces-antifibrotic-alterations-in-primary-human-vocal-fold-fibroblasts
#1
Chi Zhang, Jiajia Wang, Adriana Chou, Ting Gong, Erin E Devine, Jack J Jiang
OBJECTIVES/HYPOTHESIS: Photodynamic therapy (PDT) is a promising treatment modality for laryngeal dysplasia, early-stage carcinoma, and papilloma, and was reported to have the ability to preserve laryngeal function and voice quality without clinical fibrotic response. We aimed to investigate the mechanism behind the antifibrotic effects of PDT on primary human vocal fold fibroblasts (VFFs) in vitro. STUDY DESIGN: In vitro analysis from one human donor. METHODS: Cell viability of VFFs in response to varying doses of PDT was investigated by the Cell Counting Kit-8 method...
April 18, 2018: Laryngoscope
https://www.readbyqxmd.com/read/29666894/-conservative-management-of-varicosis-and-postthrombotic-syndrome
#2
J Knupfer, S Reich-Schupke, M Stücker
Both varicosis and postthrombotic syndrome are manifestations of chronic venous disease - a widespread disease. Even at an early stage there are visible vascular symptoms, feeling of heaviness and tendency to swelling. In advanced stages, skin alterations and chronic wounds follow. Chronic venous insufficiency as a progressive disease can lead to significant limitations in the quality of life. Adequate diagnosis and therapy is therefore essential. A causal therapy that removes varices or occluding processes should be targeted whenever possible...
April 17, 2018: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/29665018/differential-response-of-human-dermal-fibroblast-subpopulations-to-visible-and-near-infrared-light-potential-of-photobiomodulation-for-addressing-cutaneous-conditions
#3
Charles Mignon, Natallia E Uzunbajakava, Irene Castellano-Pellicena, Natalia V Botchkareva, Desmond J Tobin
BACKGROUND OBJECTIVES: The past decade has witnessed a rapid expansion of photobiomodulation (PBM), demonstrating encouraging results for the treatment of cutaneous disorders. Confidence in this approach, however, is impaired not only by a lack of understanding of the light-triggered molecular cascades but also by the significant inconsistency in published experimental outcomes, design of the studies and applied optical parameters. This study aimed at characterizing the response of human dermal fibroblast subpopulations to visible and near-infrared (NIR) light in an attempt to identify the optical treatment parameters with high potential to address deficits in aging skin and non-healing chronic wounds...
April 17, 2018: Lasers in Surgery and Medicine
https://www.readbyqxmd.com/read/29663707/engineering-pro-regenerative-hydrogels-for-scarless-wound-healing
#4
REVIEW
Guoming Sun, Yu-I Shen, John W Harmon
Skin and skin appendages protect the body from harmful environment and prevent internal organs from dehydration. Superficial epidermal wounds usually heal without scarring, however, deep dermal wound healing commonly ends up with nonfunctioning scar formation with substantial loss of skin appendage. Wound healing is one of the most complex dynamic biological processes, during which a cascade of biomolecules combine with stem cell influx and matrix synthesis and synergistically contribute to wound healing at all levels...
April 16, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29663695/a-magnetically-responsive-biomaterial-system-for-flexibly-regulating-the-duration-between-pro-and-anti-inflammatory-cytokine-deliveries
#5
Anita E Tolouei, Nihan Dülger, Rosa Ghatee, Stephen Kennedy
While inflammation can be problematic, it is nonetheless necessary for proper tissue regeneration. However, it remains unclear how the magnitude and duration of the inflammatory response impacts regenerative outcome. This is partially due to the difficulty in temporally regulating macrophage phenotype at wound sites. Here, a magnetically responsive biomaterial system potentially capable of temporally regulating macrophage phenotypes through sequential, on-demand cytokine deliveries is presented. This material system is designed to (i) rapidly recruit proinflammatory macrophages (M1) through initial cytokine deliveries and (ii) subsequently transition macrophages toward anti-inflammatory phenotypes (M2s) through delayed, magnetically triggered cytokine release...
April 16, 2018: Advanced Healthcare Materials
https://www.readbyqxmd.com/read/29662125/netrin-1-promotes-diabetic-corneal-wound-healing-through-molecular-mechanisms-mediated-via-the-adenosine-2b-receptor
#6
Yangyang Zhang, Peng Chen, Guohu Di, Xia Qi, Qingjun Zhou, Hua Gao
Netrins are secreted chemoattractants with the roles in axon guidance, cell migration and epithelial plasticity. In the present study, we investigated the roles of netrin-1 in the regulation of corneal epithelial wound healing, inflammation response and nerve fiber regeneration in diabetic mice and cultured corneal epithelial cells. In diabetic mice, the expression of netrin-1 was decreased when compared with that of normal mice. Furthermore, high glucose blocked the wounding-induced up-regulation of netrin-1 expression in corneal epithelial cells...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29661721/high-expression-of-pxdn-is-associated-with-poor-prognosis-and-promotes-proliferation-invasion-as-well-as-migration-in-ovarian-cancer
#7
Ying-Ze Zheng, Lei Liang
BACKGROUND: Peroxidasin (PXDN) is an extracellular matrix protein with peroxidase activity. PXDN has been reported to participate in the processes of epithelial mesenchymal transition. However, the roles of PXDN in progression of cancers are still rare. METHODS: Expression profiles of PXDN in ovarian cancer (OC) tissues were obtained from GEO and TCGA database. Quantitative reverse transcription polymerase chain reaction (qRT-PCR) was performed to measure the expression of PXDN in OC cells...
March 14, 2018: Annals of Diagnostic Pathology
https://www.readbyqxmd.com/read/29661554/effect-of-skin-graft-thickness-on-scar-development-in-a-porcine-burn-model
#8
Danielle M DeBruler, Britani N Blackstone, Kevin L McFarland, Molly E Baumann, Dorothy M Supp, J Kevin Bailey, Heather M Powell
Animal models provide a way to investigate scar therapies in a controlled environment. It is necessary to produce uniform, reproducible scars with high anatomic and biologic similarity to human scars to better evaluate the efficacy of treatment strategies and to develop new treatments. In this study, scar development and maturation were assessed in a porcine full-thickness burn model with immediate excision and split-thickness autograft coverage. Red Duroc pigs were treated with split-thickness autografts of varying thickness: 0...
April 13, 2018: Burns: Journal of the International Society for Burn Injuries
https://www.readbyqxmd.com/read/29660511/comparative-adsorption-profiles-of-basal-lamina-proteome-and-gingival-cells-onto-dental-and-titanium-surfaces
#9
Mohamed-Nur Abdallah, Ghada Abughanam, Simon D Tran, Zeeshan Sheikh, Mohamed A Mezour, Tayebah Basiri, Yizhi Xiao, Marta Cerruti, Walter L Siqueira, Faleh Tamimi
Titanium (Ti) dental implants are susceptible to bacterial infections and failure due to lack of proper epithelial seal. Epithelial cells establish a strong epithelial seal around natural teeth by the deposition of basal lamina (BL) proteins that adsorb on the tooth surface. This seal can even be re-established onto cementum or dentin following injury or periodontal therapy. However, it is unclear how tooth surfaces promote this cell attachment and protein adsorption. Understanding the interactions between BL proteins and epithelial cells with dentin and Ti will facilitate the development of implant surfaces that promote the formation of an epithelial seal and improve the success of periodontal therapy and wound healing on natural teeth...
April 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29660388/outcomes-of-gracilis-muscle-flaps-in-the-management-of-groin-complications-after-arterial-bypass-with-prosthetic-graft
#10
Anahita Dua, Vy T Ho, Christina Rao, Sapan S Desai
INTRODUCTION: This study details two-year outcomes of a modified gracilis muscle flap (GMF) technique in providing tissue coverage for groin complications after arterial bypass surgery with synthetic graft. METHODS: All patients who developed groin infections after lower extremity arterial bypass with synthetic graft that underwent a GMF were included from June 2014 to March 2017 from a prospectively collected, purpose-built institutional database. Modifications to the standard technique included identification of the muscle using ultrasound to ensure precise skip incisions, preservation of the segmental blood supply, widening of the tunnel through which the muscle is retroflexed, placement of a wound VAC for healing, and lifelong antibiotics...
April 13, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29660052/side-to-side-and-end-to-side-double-anastomosis-using-the-parietal-branch-of-the-superficial-temporal-artery-a-novel-technique-for-extracranial-to-intracranial-bypass-surgery-3-dimensional-operative-video
#11
Gregory D Arnone, Ziad A Hage, Fady T Charbel
In this 3-dimensional video, we perform a side-to-side and end-to-side double anastomosis using the parietal-branch of the superficial temporal artery (STA) to provide flow augmentation in a symptomatic 59-yr-old male with bilateral internal carotid artery occlusion at the origin, and left M1 segment occlusion. The patient suffered multiple left hemispheric strokes despite maximal medical therapy and was found to have poor hemodynamic reserve in the left hemisphere during evaluation with regional and global blood oxygenation level-dependent functional magnetic resonance imaging with CO2-challenge as well as quantitative magnetic resonance angiography and noninvasive optimal vessel analysis pre- and post-acetazolamide challenge...
April 12, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29659538/cell-adhesion-molecules-are-mediated-by-photobiomodulation-at-660-nm-in-diabetic-wounded-fibroblast-cells
#12
Nicolette N Houreld, Sandra M Ayuk, Heidi Abrahamse
Diabetes affects extracellular matrix (ECM) metabolism, contributing to delayed wound healing and lower limb amputation. Application of light (photobiomodulation, PBM) has been shown to improve wound healing. This study aimed to evaluate the influence of PBM on cell adhesion molecules (CAMs) in diabetic wound healing. Isolated human skin fibroblasts were grouped into a diabetic wounded model. A diode laser at 660 nm with a fluence of 5 J/cm² was used for irradiation and cells were analysed 48 h post-irradiation...
April 16, 2018: Cells
https://www.readbyqxmd.com/read/29658612/let-7d-3p-is-associated-with-apoptosis-and-response-to-neoadjuvant-chemotherapy-in-ovarian-cancer
#13
Raúl García-Vázquez, Dolores Gallardo Rincón, Erika Ruiz-García, Abelardo Meneses García, Olga N Hernández De La Cruz, Horacio Astudillo-De La Vega, David Isla-Ortiz, Laurence A Marchat, Yarely M Salinas-Vera, Ángeles Carlos-Reyes, Sullivan López-González, Rosalio Ramos-Payan, César López-Camarillo
Altered expression of microRNAs contributes to the heterogeneous biological behavior of human malignancies and it may correlate with the clinical pathological features of patients. The let-7 microRNA family is frequently downregulated in human cancers and its aberrant expression may be a useful marker for prediction of the clinical response to therapy in patients. In the present study, we analyzed the expression of three members of the let-7 family (let-7a-3p, let-7d-3p and let-7f), which remains largely uncharacterized in ovarian cancer tissues...
April 12, 2018: Oncology Reports
https://www.readbyqxmd.com/read/29657907/comparing-surgical-site-infection-and-scar-cosmesis-between-conventional-linear-skin-closure-versus-purse-string-skin-closure-in-stoma-reversal-a-randomized-controlled-trial
#14
Sathasivam Sureshkumar, Kunnathoor Jubel, Manwar S Ali, Chellappa Vijayakumar, Anandhi Amaranathan, Sudharsanan Sundaramoorthy, Chinnakali Palanivel
Introduction Stoma closure is one of the most frequently performed surgeries. The common complications are surgical site infection (SSI) and poor scar cosmesis. Purse-string sutures are expected to have less incidence of SSI due to the free drainage of secretions from the wound and possibly the early detection of a wound infection. Compared to the conventional linear closure, the purse-string closure technique is expected to have less wound infection, improved scar cosmesis, and good patient satisfaction because of a smaller size scar...
February 11, 2018: Curēus
https://www.readbyqxmd.com/read/29656489/photocatalytic-hybrid-semiconductor-metal-nanoparticles-from-synergistic-properties-to-emerging-applications
#15
REVIEW
Nir Waiskopf, Yuval Ben-Shahar, Uri Banin
Hybrid semiconductor-metal nanoparticles (HNPs) manifest unique combined and often synergetic properties stemming from the materials combination. These structures exhibit spatial charge separation across the semiconductor-metal junction upon light absorption, enabling their use as photocatalysts. So far, the main impetus of photocatalysis research in HNPs addresses their functionality in solar fuel generation. Recently, it was discovered that HNPs are functional in efficient photocatalytic generation of reactive oxygen species (ROS)...
April 14, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29655989/in-vivo-migration-of-mesenchymal-stem-cells-to-burn-injury-sites-and-their-therapeutic-effects-in-a-living-mouse-model
#16
Eun Jung Oh, Ho Won Lee, Senthilkumar Kalimuthu, Tae Jung Kim, Hyun Mi Kim, Se Hwan Baek, Liya Zhu, Ji Min Oh, Seung Hyun Son, Ho Yun Chung, Byeong-Cheol Ahn
Mesenchymal stem cell (MSC)-based therapy has emerged as a promising therapeutic strategy for tissue regeneration and repair. In this study, we non-invasively monitored the tracking of MSCs toward burn injury sites using MSCs expressing firefly luciferase (Fluc) gene in living mice, and evaluated the effects of the MSCs at the injury site. Murine MSCs co-expressing Fluc and green fluorescent protein (GFP) were established using a retroviral system (referred to as MSC/Fluc). To evaluate the ability of MSC migration toward burn injury sites, cutaneous burn injury was induced in the dorsal skin of mice...
April 12, 2018: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/29652610/combination-therapy-comprising-a-static-magnetic-field-with-contractility-improves-skin-wounds
#17
Byeong-Wook Song, Hyunki Hong, Yu Jin Jung, Ju Hyung Lee, Bong-Soo Kim, Hoon-Bum Lee
Cutaneous wounds can present significant clinical problems because of abnormal healing after deep dermal damage. Despite technical advances in wound care, there are still unmet needs that result from inefficient treatment. In this study, we aimed to improve skin wound healing using a contractibility band with static magnetic field (SMF), termed a Magnetic band (Mb). To examine the effect of the Mb on wound healing, full-thickness 15 mm × 35 mm excision wounds were surgically created on the dorsum of rats. An elastic and contractile band (non-treatment), or one neodymium magnet (Nd-1) or two magnets with an elastic and contractile band (Nd-2) were topically applied to the wound daily and the wound size was measured from day 1 to 7 after surgery...
March 21, 2018: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29652324/-dangerous-complication-of-vacuum-therapy-for-post-sternotomy-wound-infectious-complications
#18
E A Korymasov, A S Benyan, M A Medvedchikov-Ardija
No abstract text is available yet for this article.
2018: Khirurgiia
https://www.readbyqxmd.com/read/29651840/glucosamine-based-supramolecular-nanotubes-for-human-mesenchymal-cell-therapy
#19
Satish Talloj, Bill Cheng, Jen-Po Weng, Hsin-Chieh Lin
Herein, we demonstrate an example of glucosamine-based supramolecular hydrogels that can be used for human mesenchymal cell therapy. We designed and synthesized a series of amino acid derivatives based on a strategy of capping D-glucosamine moiety at C-terminus and fluorinated benzyl group at N-terminus. From a systematic study on chemical structures, we discovered that the glucosamine-based supramolecular hydrogel (PFB-F-Glu) self-assembled with one dimensional nanotubular structures at physiological pH. The self-assembly of newly discovered PFB-F-Glu motif is attributed to synergistic effect of π-π stacking and extensive intermolecular hydrogen bonding network in aqueous medium...
April 13, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29651400/management-of-a-case-of-mucor-colonization-in-breast-tissue-expander-seroma-pocket
#20
Danielle N Atwood, Pallavi A Kumbla, Brian Yuen, James C Yuen
Mucormycosis has a mortality rate reaching 90%, and is imperative that therapy be initiated rapidly once a diagnosis is made. Successful treatment consists of management of underlying risk factors, surgical debridement, and antifungal therapies. The dilemma whether or not to pursue extensive debridement presents when the wound is cultured positive but the patient is not systemically ill. We present the first reported case of successful medical treatment of a seroma pocket colonized with mucor in a patient undergoing bilateral reconstruction with tissue expander and acellular dermal matrix...
January 2018: World Journal of Plastic Surgery
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