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https://www.readbyqxmd.com/read/28090513/an-update-and-review-of-cell-based-wound-dressings-and-their-integration-into-clinical-practice
#1
REVIEW
Austin Pourmoussa, Daniel J Gardner, Maxwell B Johnson, Alex K Wong
Chronic wounds affect over 4 million individuals and pose a significant burden to the US healthcare system. Diabetes, venous stasis, radiation or paralysis are common risk factors for chronic wounds. Unfortunately, the current standard of care (SOC) has a high relapse rate and these wounds continue to adversely affect patients' quality of life. Fortunately, advances in tissue engineering have allowed for the development of cell-based wound dressings that promote wound healing by improving cell migration and differentiation...
December 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28088375/two-stage-management-of-cierny-mader-type-iv-chronic-osteomyelitis-of-the-long-bones
#2
Hongri Wu, Jie Shen, Xin Yu, Jingshu Fu, Shengpeng Yu, Dong Sun, Zhao Xie
INTRODUCTION: Cierny-Mader (C-M) type IV chronic osteomyelitis represents a complex clinical challenge with permeation of extensive bone and soft tissue involvement. Aggressive debridement through viable tissue margin includes en bloc resection improves the odds of eradication of infection, which creates large bone and soft tissue loss in treating this type of osteomyelitis. The potentially large defects increase reconstruction problems with traditional reconstruction technique. The newly staged induced membrane technique presents length-independent, potential as an alternative reconstruction method for segmental bone defects due to type IV chronic osteomyelitis...
January 6, 2017: Injury
https://www.readbyqxmd.com/read/28079551/current-techniques-for-burn-reconstruction-using-dehydrated-human-amnion-chorion-membrane-allografts-as-an-adjunctive-treatment-along-the-reconstructive-ladder
#3
Paul M Glat, Thomas Davenport
The reconstructive ladder is a term coined by reconstructive plastic surgeons to describe levels of increasingly complex management of wounds. The first rungs of the ladder is allowing the wound to heal by secondary intention, advancing up the ladder to direct tissue closure, with skin grafting and tissue transfer (flaps) comprising the higher rungs. Skin grafting and tissue transfer (flaps) at the middle and higher rungs of the ladder are often necessary for the treatment of complex burn injuries. Our purpose is to describe how dehydrated human amnion/chorion membrane allografts may be used as an adjunctive treatment...
February 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28074234/-biological-downsizing-acetabular-defect-reconstruction-in-revision-total-hip-arthroplasty
#4
S Koob, S Scheidt, T M Randau, M Gathen, M D Wimmer, D C Wirtz, S Gravius
BACKGROUND: Periacetabular bony defects remain a great challenge in revision total hip arthroplasty. After assessment and classification of the defect and selection of a suitable implant the primary stable fixation and sufficient biological reconstitution of a sustainable bone stock are essential for long term success in acetabular revision surgery. Biological defect reconstruction aims for the down-sizing of periacetabular defects for later revision surgeries. TECHNIQUE: In the field of biological augmentation several methods are currently available...
January 10, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/28068625/loss-of-periplakin-expression-is-associated-with-the-tumorigenesis-of-colorectal-carcinoma
#5
Xiang Li, Guohui Zhang, Yan Wang, Ahmed Elgehama, Yang Sun, Lele Li, Yanhong Gu, Wenjie Guo, Qiang Xu
Periplakin (PPL), a member of the plakin protein family, has been reported to be down-expressed in urothelial carcinoma. The role of PPL in human colorectal cancer, however, remains largely unknown. Also little is known about the contribution of PPL to the malignant property of colorectal cancer and the intracellular function of PPL. In this study, we demonstrated that PPL was apparently down-expressed in colon carcinomas compared with normal and para-carcinoma tissues, which was correlated with the tumor size...
January 6, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28066738/ligamentum-teres-tendinopathy-and-tears
#6
REVIEW
Matthew J Kraeutler, Tigran Garabekyan, Cecilia Pascual-Garrido, Omer Mei-Dan
BACKGROUND: The ligamentum teres (LT) consists of two bands that originate on the ischial and pubic sides of the acetabular notch and insert on the fovea capitis of the femoral head. Recent studies have established the LT as an important hip stabilizer in a squatting position, particularly in patients with osseous instability. PURPOSE: This review aims to concisely present the literature on LT tendinopathy and tears in order to guide health care professionals in the appropriate diagnosis and treatment of these disorders...
July 2016: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28065453/protective-effects-of-l-carnitine-against-delayed-graft-function-in-kidney-transplant-recipients-a-pilot-randomized-double-blinded-placebo-controlled-clinical-trial
#7
Atefeh Jafari, Mohammad-Reza Khatami, Simin Dashti-Khavidaki, Mahboob Lessan-Pezeshki, Alireza Abdollahi, Azadeh Moghaddas
OBJECTIVE: Delayed graft function (DGF) is an early complication after deceased donor kidney transplantation with significant adverse effects on graft outcomes. Ischemia-reperfusion injury during transplantation is a major cause of DGF. Tissue concentrations of carnitine, an antioxidant and regulator of cellular energy supply, decrease in the kidney following ischemia-reperfusion insult. Based on promising animal data, this study evaluated the possible protective effect of L-carnitine against DGF...
January 3, 2017: Journal of Renal Nutrition
https://www.readbyqxmd.com/read/28064305/upregulation-of-pim2-by-underexpression-of-microrna-135-5p-improves-survival-rates-of-skin-allografts-by-suppressing-apoptosis-of-fibroblast-cells
#8
Hongtu Zhang
BACKGROUND It has been reported that miR-135-5p is involved with many diseases. In this study, we aimed at define the relationship between miR-135-5p level and burn patient survival after skin transplantation. MATERIAL AND METHODS Expression of miR-135-5p and PIM2 was measured using real-time PCR and Western blot analysis in the skin samples collected from burn patients who received skin graft or in the fibroblast cells transfected with miR-135-5p mimics or inhibitors. The regulatory association between miR-135-5p and PIM2 was verified using bioinformatics analysis and luciferase assay...
January 8, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28058525/the-visual-assessment-of-broth-cultures-for-tissue-bank-samples
#9
Kerry Varettas
The bioburden screening process of allograft musculoskeletal tissue samples received at the South Eastern Area Laboratory Services includes the routine use of solid agar and cooked meat (CM) broth media. CM has been routinely sub-cultured onto solid agar plates after aerobic incubation at 35 °C. This study will evaluate whether a visual assessment of CM can replace sub-culture by an in vitro inoculation and a prospective study. Eight challenge organisms were serially diluted and inoculated into CM. The average inoculum of 0...
January 5, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28058524/determination-of-residual-dimethylsulfoxide-in-cryopreserved-cardiovascular-allografts
#10
R Díaz Rodríguez, B Van Hoeck, S De Gelas, F Blancke, R Ngakam, K Bogaerts, R Jashari
Dimethylsulfoxide (DMSO) is a solvent which protects the structure of allografts during the cryopreservation and thawing process. However, several toxic effects of DMSO in patients after transplantation of cryopreserved allografts have been described. The aim of this study is to determine the residual DMSO in the cardiovascular allografts after thawing and preparation of cryopreserved allografts for clinical application following guidelines of the European Pharmacopoeia for DMSO detection. Four types of EHB allografts (aortic valve-AV, pulmonary valve-PV, descending thoracic aorta-DA, and femoral artery-FA) are cryopreserved using as cryoprotecting solution a 10% of DMSO in medium 199...
January 5, 2017: Cell and Tissue Banking
https://www.readbyqxmd.com/read/28058223/acute-antibody-mediated-rejection-after-intestinal-transplantation
#11
Guo-Sheng Wu, Ruy J Cruz, Jun-Chao Cai
AIM: To investigate the incidence, risk factors and clinical outcomes of acute antibody-mediated rejection (ABMR) after intestinal transplantation (ITx). METHODS: A retrospective single-center analysis was performed to identify cases of acute ABMR after ITx, based on the presence of donor-specific antibody (DSA), acute tissue damage, C4d deposition, and allograft dysfunction. RESULTS: Acute ABMR was identified in 18 (10.3%) out of 175 intestinal allografts with an average occurrence of 10 d (range, 4-162) after ITx...
December 24, 2016: World Journal of Transplantation
https://www.readbyqxmd.com/read/28056334/immediate-microsurgical-bone-and-nerve-reconstruction-in-the-irradiation-treated-patient-a-case-report
#12
Ramzey Tursun, J Marshall Green
Microsurgical reconstructive techniques have revolutionized the treatment of large head and neck defects. These defects were once forever life altering because of the considerable morbidity to both the form and function of the patient. As time has progressed, microsurgical technique has improved dramatically and has become institutionalized in our training programs. Free flap outcomes in head and neck reconstruction have improved dramatically, and optimization of these outcomes is now key. One overlooked area has been neurosensory reconstruction...
December 11, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28045778/a-14-year-audit-and-analysis-of-human-skin-allograft-discards
#13
Jordan Spradbrow, Matthew Etchells, Robert Cartotto, Alison Halliday, Yulia Lin, Andrew Simor, Raj Visvalingam, Jeannie Callum
The objective of this study was to review the incidence of skin allograft discard and bacterial contamination due to donor bioburden at the Ontario Professional Firefighters Skin Bank over a 14-year period. We sought to determine whether modifications to our prerecovery donor preparation process have been effective in reducing skin bioburden and identify other potential risk factors of allograft contamination. A retrospective review of all skin donors (n = 259) processed from 2002 to 2015 was performed. Multivariate logistic regression was used to determine whether donor-related factors and procurement-related factors were significantly associated with microbial contamination predisinfection and discard secondary to contamination...
December 30, 2016: Journal of Burn Care & Research: Official Publication of the American Burn Association
https://www.readbyqxmd.com/read/28042445/guided-bone-regeneration-via-a-preformed-titanium-foil-clinical-histological-and-histomorphometric-outcome-of-a-case-series
#14
M Andreasi Bassi, C Andrisani, S Lico, Z Ormanier, L Ottria, M Gargari
PURPOSE: The aim of this paper was to evaluate the histological and histomorphometric outcome of Preformed Titanium Foil (PTF) to perform Guided Bone Regeneration (GBR) in posterior mandibular atrophies. MATERIALS AND METHODS: 10 subjects (1 male; 9 females; mean age 58±11.37 years), with distal mandibular atrophies were selected to perform GBR by means of PTF, using a moldable allograft paste as graft material. The devices, made of a 0,2 mm thick pure titanium foil, were pre-shaped using stereolithographic models obtained from CT-scan of the patients' recipient site...
October 2016: Oral & Implantology
https://www.readbyqxmd.com/read/28039517/solvent-dehydrated-dermal-allograft-axis%C3%A2-augmented-cystocele-repair-longitudinal-results
#15
Saad Juma, Omer A Raheem
INTRODUCTION AND HYPOTHESIS: Surgical repair options for pelvic organ prolapse (POP) include native tissue, allograft, xenograft, and synthetic grafts. Solvent-dehydrated dermal allograft (SDDG) has an improved safety profile. We evaluated the long-term safety and efficacy of SDDG use for cystocele repair. METHODS: A total of 184 patients completed a minimum follow-up of 12 months. Incontinence Impact Questionnaire (IIQ), Urogenital Distress Inventory (UDI), and Visual Analogue Scale (VAS) were used pre and post operatively...
December 30, 2016: International Urogynecology Journal
https://www.readbyqxmd.com/read/28034338/bioengineering-strategies-to-treat-female-infertility
#16
Che-Ying Kuo, Hannah B Baker, Melissa H Fries, James J Yoo, Peter Cw Kim, John P Fisher
Bioengineering strategies have demonstrated enormous potential to treat female infertility as a result of chemotherapy, uterine injuries, fallopian tube occlusion, massive intrauterine adhesions, congenital uterine malformations and hysterectomy. These strategies can be classified into two broad categories: 1) Transplantation of fresh or cryopreserved organs into the host; and 2) tissue engineering approaches that utilize a combination of cells, growth factors and biomaterials that leverages the body's inherent ability to regenerate/repair reproductive organs...
December 30, 2016: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/28031169/the-hypoxanthine-xanthine-oxidase-axis-is-not-involved-in-the-initial-phase-of-clinical-transplantation-related-ischemia-reperfusion-injury
#17
Leonie G M Wijermars, Jaap A Bakker, Dorottya K de Vries, Cornelis J F van Noorden, Jorgen Bierau, Sarantos Kostidis, Oleg A Mayboroda, Dimitrios Tsikas, Alexander F Schaapherder, Jan H N Lindeman
The hypoxanthine-xanthine oxidase (XO) axis is considered to be a key driver of transplantation related ischemia reperfusion (I/R) injury. Whereas interference with this axis effectively quenches I/R injury in preclinical models, there is limited efficacy of XO inhibitors in clinical trials. In this context, we considered clinical evaluation of a role for the hypoxanthine-XO axis in human I/R to be relevant. Patients undergoing renal allograft transplantation were included (n=40) and classified based on duration of ischemia (short; intermediate; prolonged)...
December 28, 2016: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28028957/allogeneic-vs-autologous-skin-grafts-in-the-therapy-of-patients-with-burn-injuries-a-restrospective-open-label-clinical-study-with-pair-matching
#18
Diana Kitala, Marek Kawecki, Agnieszka Klama-Baryła, Wojciech Łabuś, Małgorzata Kraut, Justyna Glik, Ireneusz Ryszkiel, Marek P Kawecki, Mariusz Nowak
BACKGROUND: Early application of autologous skin may lead to the loss of split thickness skin graft due to unclarified wound bed. Allogeneic skin grafts are performed on patients with extensive burn injuries after escharotomy, tangential excisions and deep debridement for the purpose of stabilizing the general condition and reducing the scope of local complications. OBJECTIVES: The aim of this paper is to determine how the use of allografts improves the conditions for the intake of autografts in burns treatment, and how it accelerates wound healing in comparison to the autografts-only option...
September 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28028710/restoring-ovarian-endocrine-function-with-encapsulated-ovarian-allograft-in-immune-competent-mice
#19
Anu David, James Ronald Day, Alexa Leigh Cichon, Adam Lefferts, Marilia Cascalho, Ariella Shikanov
Premature ovarian insufficiency (POI) is a major complication of cytotoxic treatments due to extreme ovarian sensitivity to chemotherapy and radiation. In pediatric cancer patients modern therapy has improved the long-term survival to over 80% in the United States. However, these cancer survivors face long-term health problems related to treatment toxicity. In female cancer survivors POI leads to sterility, along with the consequences of estrogen deficiency such as premature osteopenia, muscle wasting, accelerated cardiovascular diseases and a vast array of other health and developmental problems...
December 27, 2016: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28018706/application-of-platelet-rich-plasma-with-stem-cells-in-bone-and-periodontal-tissue-engineering
#20
REVIEW
Gabriela Fernandes, Shuying Yang
Presently, there is a high paucity of bone grafts in the United States and worldwide. Regenerating bone is of prime concern due to the current demand of bone grafts and the increasing number of diseases causing bone loss. Autogenous bone is the present gold standard of bone regeneration. However, disadvantages like donor site morbidity and its decreased availability limit its use. Even allografts and synthetic grafting materials have their own limitations. As certain specific stem cells can be directed to differentiate into an osteoblastic lineage in the presence of growth factors (GFs), it makes stem cells the ideal agents for bone regeneration...
2016: Bone Research
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