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Skin grafting

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https://www.readbyqxmd.com/read/29143918/induction-of-cd4-cd25-foxp3-regulatory-t-cells-by-mesenchymal-stem-cells-is-associated-with-runx-complex-factors
#1
Maryam Khosravi, Ali Bidmeshkipour, Ali Moravej, Suzzan Hojjat-Assari, Sina Naserian, Mohammad Hossein Karimi
Among the particular immunomodulation properties of mesenchymal stem cells (MSCs), one relies on their capacity to regulatory T cell (Treg) induction from effector T cells. Stable expression of Foxp3 has a dominant role in suppressive phenotype and stability of induced regulatory T cells (iTregs). How MSCs induce stable Foxp3 expression in iTregs remains unknown. We previously showed MSCs could enhance demethylation of Treg-specific demethylated region (TSDR) in iTregs in cell-cell contact manner (unpublished data)...
November 16, 2017: Immunologic Research
https://www.readbyqxmd.com/read/29142785/role-of-cord-blood-and-bone-marrow-mesenchymal-stem-cells-in-recent-deep-burn-a-case-control-prospective-study
#2
Wael Abo-Elkheir, Fawzy Hamza, Ahmed M Elmofty, Atef Emam, Magdy Abdl-Moktader, Sameh Elsherefy, Hala Gabr
RATIONALE: Burn injuries represent one of the major worldwide public health problems causing more severe physiological stress than other traumas. Effective treatment of burn injuries is mandatory to prevent the numerous life-threatening complications and possible disabilities. Stem cells, a population of multipotent cells retaining the properties of self-renewal and differentiation, are the main player in tissue regeneration after major trauma. Thus, they are thought to play a key role in wound healing inducing efficient and physiological skin regeneration...
2017: American Journal of Stem Cells
https://www.readbyqxmd.com/read/29137568/first-dorsal-metatarsal-artery-perforator-flap-to-cover-great-toe-defect
#3
Roongsak Limthongthang, Perajit Eamsobhana
BACKGROUND: There were very few options available for distal foot and toe defects that required a vascularized flap for coverage. As such, the use of a free flap was often justified in this region of the foot. The use of perforator flaps has created a new subset of local tissue transfer alternatives that increases the potential that the difficulties associated with microvascular tissue transfers could be avoided. The first dorsal metatarsal artery (FDMA) perforator flap was one variant of this new type of tissue transfer...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29136299/malignancy-in-renal-transplant-recipients-exposed-to-cyclophosphamide-prior-to-transplantation-for-the-treatment-of-native-glomerular-disease
#4
M R Jorgenson, J L Descourouez, T Singh, Brad C Astor, Sarah E Panzer
STUDY OBJECTIVE: To evaluate the risk of post-transplantation malignancy in renal transplant recipients exposed to pre-transplantation cyclophosphamide for treatment of glomerular nephropathy (GN). DESIGN: Retrospective cohort study. SETTING: Tertiary academic medical center. PATIENTS: Six hundred adult renal transplant recipients transplanted between 1993 and 2014; 54 patients were exposed to pre-transplantation cyclophosphamide for treatment of GN (GN-CYC group), and 546 patients with polycystic kidney disease were not exposed to pre-transplantation cyclophosphamide (PKD group)...
November 14, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/29135894/deferoxamine-preconditioning-of-irradiated-tissue-improves-perfusion-and-fat-graft-retention
#5
John Flacco, Natalie Chung, Charles P Blackshear, Dre Irizarry, Arash Momeni, Gordon K Lee, Dung Nguyen, Geoffrey C Gurtner, Michael T Longaker, Derrick C Wan
BACKGROUND: Radiation therapy is a mainstay in the treatment of many malignancies, but collateral damage to surrounding tissue, with resultant hypovascularity, fibrosis, and atrophy, can be difficult to reconstruct. Fat grafting has been shown to improve the quality of irradiated skin, but volume retention of the graft is significantly decreased. Deferoxamine (DFO) is a FDA-approved iron-chelating medication for acute iron intoxication and chronic iron overload that has also been shown to increase angiogenesis...
November 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29135893/inhibition-of-skin-wound-contraction-by-nanofibrillar-cellulose-hydrogel
#6
Kristo Nuutila, Antti Laukkanen, Andrew Lindford, Susanna Juteau, Markus Nuopponen, Jyrki Vuola, Esko Kankuri
BACKGROUND: Although wound contraction is an essential part of healing, excessive contraction can compromise healing through induction of scarring and fibrosis. This in turn leads to development of wound contractures that limit elasticity and function. Major research efforts have focused on development of novel therapeutic approaches to gain inhibitory control over wound contraction. Despite these efforts, the need for cost-effective, clinically feasible and effective agents to inhibit wound contraction remains...
November 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/29135409/double-inlay-plus-ventral-onlay-buccal-mucosa-graft-for-simultaneous-penile-and-bulbar-urethral-stricture
#7
Luciano A Favorito, Paulo P Conte, Ulisses G Sobrinho, Rodrigo G Martins, Tomas Accioly
OBJECTIVES: Buccal mucosa grafts and fascio-cutaneous flaps are frequently used in long anterior urethral strictures (1). The inlay and onlay buccal mucosa grafts are easier to perform, do not need urethral mobilization and generally have good long-term results (2-4). In the present video, we present a case where we used a double buccal mucosa graft technique in a simultaneous penile and bulbar urethral stricture. MATERIALS AND METHODS: A 54 year-old male patient was submitted to appendectomy where a urethral catheter was used for two days in May 2015...
November 17, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/29135145/-aesthetic-criteria-in-surgical-treatment-of-hypospadias-in-children
#8
G V Kozyrev, A A Protasov, V V Nikolaev, F K Abdullaev, G A Abdulkarimov, M E Karmanov
Aesthetically acceptable cosmetic results of surgical correction of external genital organ defects are important for treatment evaluation along with well-known criteria of good functional outcomes.The purpose of this study was to improve the results of treating children with hypospadias by improving the assessment of results and introducing multi-step correction modalities. MATERIALS AND METHODS: From 2013 to 2015, 476 patients with various forms of hypospadias were treated at the Department of Uroandrology of RCCH...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29133658/role-of-amniotic-membrane-and-full-thickness-skin-graft-in-reconstruction-of-kissing-nevus-of-eyelids
#9
Manpreet Singh, Natasha Gautam, Manpreet Kaur, Zoramthara Zadeng
A 20-year-old girl presented with a large pigmented lesion over the temporal aspect of left lateral canthus involving the lateral one-third of both eyelids, since birth. A slow increase in its size had been noticed for the past 2 years. On examination, a hairy nevus measuring 34 mm × 22 mm was noticed involving left eyelid skin, the mucocutaneous junction (MCJ), palpebral conjunctiva, and lateral canthus. The surface was irregularly thick and covered with long, thick, and pigmented hairs. A clinical diagnosis of kissing nevus of eyelids was kept and a surgical resection with reconstruction planned...
November 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/29133250/success-of-immunosuppressive-treatments-in-patients-with-chronic-graft-versus-host-disease
#10
Stephanie J Lee, Tam D Nguyen, Lynn Onstad, Merav Bar, Elizabeth F Krakow, Rachel B Salit, Paul A Carpenter, Morgani Rodrigues, A Marcie Hall, Barry E Storer, Paul J Martin, Mary E Flowers
Moderate to severe chronic graft-versus-host disease (GVHD) is treated with potent immunosuppressive therapy (IST) to modulate the allo-immune response, control symptoms and prevent further organ damage. We sought to understand the types of treatments used in clinical practice and the likelihood of successful treatment associated with each. A chart review was performed for 250 adult patients at Fred Hutchinson Cancer Research Center enrolled in a prospective observational study. After a median follow-up of 5...
November 10, 2017: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29133168/autologous-granulation-tissue-tubes-for-replacement-of-urethral-defects-an-experimental-study-in-male-rabbits
#11
Shi-Wei Jiang, Zhong-Hua Xu, Yuan-Yuan Zhao, Lei Yan, Zun-Lin Zhou, Gang-Li Gu
INTRODUCTION: Tubularized urethroplasty is commonly performed in clinical practice using genital skin flaps, bladder mucosa, and buccal mucosa. However, the long-term effects are not satisfying, and donor site morbidities remain a problem. Besides, those grafts are unavailable with malignant conditions of the urinary tract, a history of lichen sclerosis, or oral disease. OBJECTIVE: An autologous granulation tissue tube of any required length and diameter can be produced by implanting foreign objects subcutaneously (Summary Fig...
October 31, 2017: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29132254/reverse-flow-intrinsic-fasciocutaneous-island-flaps-in-foot-reconstruction
#12
Sujin Bahk, GyeongHyeon Doh, Ki Yong Hong, SooA Lim, SuRak Eo
Reconstruction of soft tissue defects in the foot remains a challenge due to its specialized tissue for weightbearing and ambulation. Considering the principle of replacing "like with like," adjacent soft tissues would be a best option for a donor site. Although several kinds of reverse-flow island flaps for the lower leg have been well described, intrinsic foot reverse flow flaps have been rarely reported. We describe 3 kinds of reverse-flow intrinsic fasciocutaneous flaps (RIFFs) for foot reconstruction. From September 2012 to August 2015, a retrospective study was done on case notes of all patients who had a RIFF for coverage of soft tissue defects within the foot following trauma or tumor ablation...
November 1, 2017: International Journal of Lower Extremity Wounds
https://www.readbyqxmd.com/read/29130393/wound-healing-effects-of-human-dermal-components-with-gelatin-dressing
#13
Hyun-Jun Jang, Yu-Mi Kim, Bo-Young Yoo, Young-Kwon Seo
There have been numerous investigations regarding various types of dressings and artificial dermis of solid form, yet limited research and development on paste types, such as hydrogels with dermal powder, have ensued. In this study, we compared the in vivo wound healing effects of gelatin paste containing dermal powder to a collagen type I/chondroitin 6-sulfate (coll/chondroitin) sponge and gelatin alone, after 48 days post grafting, in a skin wound rat model. In the dermis powder/gelatin paste-treated group, wound area contraction was minimized 50%, while in the gelatin and coll/chondroitin sponge groups, the initial area contracted 83-85% and 79-85%, respectively...
January 1, 2017: Journal of Biomaterials Applications
https://www.readbyqxmd.com/read/29126421/peroneal-artery-perforator-flap-for-the-treatment-of-chronic-lower-extremity-wounds
#14
Liang Cheng, Xiaqing Yang, Tingxiang Chen, Zhijie Li
BACKGROUND: Reconstruction of chronic lower extremity wounds remains challenging. These wounds are mainly associated with diabetes mellitus, infections, and osteomyelitis. Although several reconstructive techniques are available, the peroneal artery perforator flap has unique advantages. METHODS: In this study, we discuss our experiences with peroneal artery perforator flaps in 55 patients who had suffered from chronic lower limb wounds. The size of the defect, comorbidities, etiology, flap size, and complications were recorded and analyzed based on a retrospective chart review...
November 10, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29126283/surgical-management-of-penile-lesions-secondary-to-foreign-body-reaction-a-case-report-and-systematic-review
#15
Pedro L S Faveret, Fábio Santiago
Background: To improve the penile contour, some men choose to undergo implantation or injection of nonbiological materials. Foreign body reactions in penile tissue may produce scarring, deformity, ulceration, necrosis, and even gangrene. Consensus is lacking regarding the most effective surgical procedure for reconstruction of these penile lesions. Objectives: The authors describe one case study and the first systematic review focusing on reconstructive surgical management for penile lesions secondary to foreign body reaction...
November 6, 2017: Aesthetic Surgery Journal
https://www.readbyqxmd.com/read/29124855/reconstructive-options-for-large-back-free-flap-donor-sites
#16
Arshia Azizeddin, Peter F M Choong, Damien Grinsell
BACKGROUND: Reconstruction of posterior thoracic and trunk defects can prove challenging even to the most seasoned surgeons. Many commonly used techniques for closing back defects include primary closure and split skin grafts. Often times, however, other techniques are needed in order to give the patient the best aesthetic and functional outcome. In this study, we focus on and evaluate donor site closure techniques for defects in the back created by harvesting scapular and parascapular flaps...
November 9, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/29124400/characterization-of-m1-and-m2-polarization-of-macrophages-in-vascularized-human-dermo-epidermal-skin-substitutes-in-vivo
#17
Agnes S Klar, Katarzyna Michalak-Mićka, Thomas Biedermann, Claudia Simmen-Meuli, Ernst Reichmann, Martin Meuli
AIMS AND OBJECTIVES: Vascularized bio-engineered human dermo-epidermal skin substitutes (vascDESS) hold promise for treating burn patients, including those with severe full-thickness wounds. We have previously shown that vascDESS promote wound healing by enhanced influx of macrophages and granulocytes. Immediately following transplantation, macrophages infiltrate the graft and differentiate into a pro-inflammatory (M1) or a pro-healing M2 phenotype. The aim of this study was to characterize the activation state of macrophages infiltrating skin transplants at distinct time points following transplantation...
November 9, 2017: Pediatric Surgery International
https://www.readbyqxmd.com/read/29124365/change-in-reimbursement-and-costs-in-german-oncological-head-and-neck-surgery-over-the-last-decade-ablative-tongue-cancer-surgery-and-reconstruction-with-split-thickness-skin-graft-vs-microvascular-radial-forearm-flap
#18
Sebastian Hoefert, Oliver Lotter
OBJECTIVES: Defects after ablative tongue cancer surgery can be reconstructed by split-thickness skin grafts or free microvascular flaps. The different surgical options may influence costs, reimbursement, and therefore possible profits. Our goal was to analyze the development of these parameters for different procedures in head and neck reconstruction in Germany over the last decade. MATERIALS AND METHODS: After tumor resection and neck dissection of tongue cancer, three different scenarios were chosen to calculate costs, reimbursement, length of stay (LoS), and profits...
November 9, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29122499/micro-autologous-fat-transplantation-for-rejuvenation-of-the-dorsal-surface-of-the-aging-hand
#19
Lin Yun-Nan, Huang Shu-Hung, Lin Tsung-Ying, Chou Chih-Kang, Huang Yu-Hao, Takahashi Hidenobu, Lai Chung-Sheng, Lin Sin-Daw, Lin Tsai-Ming
BACKGROUND: Rejuvenation of the dorsal surface of the hand for various conditions, such as cutaneous dyschromia, fine wrinkling, skin laxity, visible extensor tendons, and varicosities appear vital to prevent wrist and digit flexion resulting from hiding of the aged appearance of the hand. Numerous fillers have been applied to re-contour the aging dorsal surface of the hand and the results were variable. The micro-autologous fat transplantation (MAFT) technique, proposed by Lin et al...
October 6, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29120855/the-application-of-l-prp-in-aids-patients-with-crural-chronic-ulcers-a-pilot-study
#20
Agata Cieslik-Bielecka, Rafał Skowroński, Magdalena Jędrusik-Pawłowska, Marcin Pierchała
Nonhealing wounds or skin ulcerations are the result of insufficient repair and destruction of a local healing potential. Opportunistic infections which cause a lot of ulcer complications influence the worsening general condition of patients with AIDS, ultimately leading to death. The chronicity of the condition and poor results of conventional therapy have prompted the search for new methods of treatment. We have examined venous or arteriovenous insufficiency-related extensive crural ulcers in AIDS patients...
November 6, 2017: Advances in Medical Sciences
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