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https://www.readbyqxmd.com/read/28422434/rat-hindlimb-cryopreservation-and-transplantation-a-step-towards-organ-banking
#1
Amir Arav, Or Friedman, Yehudit Natan, Eyal Gur, Nir Shani
In 2016 over 5 million reconstructive procedures were performed in the USA. The recent successes of clinical vascularized composite allotransplantations (VCA), hand and face transplantations included, established the tremendous potential of these life-enhancing reconstructions. Nevertheless, Due to limited availability and lifelong immunosuppression, application is limited. Long term banking of composite transplants may increase the availability of esthetically compatible parts with partial or complete HLA matching, reducing the risk of rejection and the immunosuppressive burden...
April 19, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28405091/ambulatory-extracorporeal-membrane-oxygenation-with-subclavian-venoarterial-cannulation-to-increase-mobility-and-recovery-in-a-patient-awaiting-cardiac-transplantation
#2
Samuel Jacob, Juan C MacHannaford, Themistokles Chamogeorgakis, Gonzalo V Gonzalez-Stawinski, Joost Felius, Aldo E Rafael, Rajasekhar S Malyala, Brian Lima
Venoarterial extracorporeal membrane oxygenation (ECMO) can provide temporary cardiopulmonary support for patients in hemodynamic extremis or refractory heart failure until more durable therapies-such as cardiac transplantation or a left ventricular assist device-can be safely implemented. Conventional ECMO cannulation strategies commonly employ the femoral artery and vein, constraining the patients to the supine position for the duration of ECMO support. We have recently adopted a modified cannulation approach to promote patient mobility, rehabilitation, and faster recovery and to mitigate complications associated with femoral arterial cannulation, such as limb ischemia and compartment syndrome...
April 2017: Proceedings of the Baylor University Medical Center
https://www.readbyqxmd.com/read/28390845/prevalence-of-malnutrition-in-adult-patients-previously-treated-with%C3%A2-allogeneic-hematopoietic-stem-cell-transplantation
#3
Thibault Brotelle, Richard Lemal, Aurélie Cabrespine, Cécile Combal, Eric Hermet, Aurélie Ravinet, Jacques-Olivier Bay, Corinne Bouteloup
INTRODUCTION: Malnutrition is common after allogeneic hematopoietic stem cell transplantation (allo-HSCT), and is a well-known prognostic factor for survival. The nutritional status of patients in a long term after allo-HSCT is less well documented. The main objective of this study was to evaluate the prevalence of malnutrition in adult patients who underwent allo-HSCT more than one year ago. Secondary objectives were to assess body composition, muscle strength, and factors associated with malnutrition...
March 28, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28379122/recipient-adipose-derived-stem-cells-enhance-recipient-cell-engraftment-and-prolong-allotransplant-survival-in-a-miniature-swine-hind-limb-model
#4
Yur-Ren Kuo, Chien-Chang Chen, Yen-Chou Chen, Ching-Ming Chien
Donor mesenchymal stem cells could prolong vascularized composite allotransplant (VCA) survival in our previous study.However, recipient adipose tissue is easier to harvest than donor tissue for pre-conditioning modulation. Hence, this study investigated the efficacy of recipient autologous adipose-derived stem cells (rASCs) for VCA survival. The heterotopic hind-limb transplantation from female donor to male recipient was performed in out-bred miniature swine. Group-I (N=6) were untreated controls. Group-II (N=4) obtained rASC infusions (given on week 0, +1, +2, and +3)...
March 17, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28375588/normothermic-ex-vivo-kidney-perfusion-following-static-cold-storage-ndash-brief-intermediate-or-prolonged-perfusion-for-optimal-renal-graft-reconditioning
#5
J Moritz Kaths, Juan Echeverri, Ivan Linares, Jun Yu Cen, Sujani Ganesh, Matyas Hamar, Peter Urbanellis, Paul Yip, Rohan John, Darius Bagli, Istvan Mucsi, Anand Ghanekar, David Grant, Lisa A Robinson, Markus Selzner
Normothermic ex vivo kidney perfusion (NEVKP) demonstrated superior results compared to hypothermic storage in donation after circulatory death (DCD) kidney transplantation. It is unknown whether an optimal perfusion time exists following hypothermic storage to allow for the recovery of renal grafts from cold ischemic injury. In a porcine model of DCD kidney autotransplantation, the impact of initial static cold storage (SCS) (8h) followed by various periods of NEVKP recovery was investigated: group A) 8hSCS only (control), group B) 8hSCS+1hNEVKP (brief NEVKP), group C) 8hSCS+8hNEVKP (intermediate NEVKP), and group D) 8hSCS+16hNEVKP (prolonged NEVKP)...
April 4, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28374977/hypoxic-preconditioning-induced-autophagy-enhances-survival-of-engrafted-endothelial-progenitor-cells-in-ischaemic-limb
#6
Pei Zhou, Yu-Zhen Tan, Hai-Jie Wang, Guo-Dong Wang
Recent clinical studies have suggested that endothelial progenitor cells (EPCs) transplantation provides a modest benefit for treatment of the ischaemic diseases such as limb ischaemia. However, cell-based therapies have been limited by poor survival of the engrafted cells. This investigation was designed to establish optimal hypoxia preconditioning and evaluate effects of hypoxic preconditioning-induced autophagy on survival of the engrafted EPCs. Autophagy of CD34(+) VEGFR-2(+) EPCs isolated from rat bone marrow increased after treatment with 1% O2 ...
April 4, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28357515/clinical-features-and-predictors-of-patients-with-critical-limb-ischemia-who-responded-to-autologous-mononuclear-cell-transplantation-for-therapeutic-angiogenesis
#7
Naoyoshi Aoyama, Makoto Nishinari, Shinichi Ohtani, Akifumi Kanai, Chiharu Noda, Mitsuhiro Hirata, Akira Miyamoto, Masafumi Watanabe, Tohru Minamino, Tohru Izumi, Jyunya Ako
The clinical features of patients with critical limb ischemia (CLI) who responded to angiogenesis using autologous peripheral blood mononuclear cell transplantation (PB-MNC) have not yet been fully characterized, and there are no useful predictors to judge the curative effect in the early period after PB-MNC. This study sought to clarify the clinical features and predictors in patients with CLI who were successfully treated using PB-MNC. 30 consecutive patients [arteriosclerosis obliterans: 24 patients, thromboangiitis obliterans: 6 patients] who were diagnosed with major amputation despite maximal medical therapy were enrolled in this study...
March 29, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28350667/acellular-hypothermic-extracorporeal-perfusion-extends-allowable-ischemia-time-in-a-porcine-whole-limb-replantation-model
#8
Maximilian Kueckelhaus, Alexander Dermietzel, Muayyad Alhefzi, Mario A Aycart, Sebastian Fischer, Nicco Krezdorn, Luccie Wo, Omar H Maarouf, Leonardo V Riella, Reza Abdi, Ericka M Bueno, Bohdan Pomahac
BACKGROUND: One of the major challenges in traumatic amputation is the need to keep ischemia time brief (4 to 6 hours) to avoid ischemic damage and enable successful replantation. The current inability to meet this challenge often leads to traumatic limb loss, which has a considerable detrimental impact on the quality of life of patients. METHODS: The authors' team built a portable extracorporeal membrane oxygenator device for the perfusion of amputated extremities with oxygenated acellular solution under controlled parameters...
April 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28322752/neuroprotector-effect-of-stem-cells-from-human-exfoliated-deciduous-teeth-transplanted-after-traumatic-spinal-cord-injury-involves-inhibition-of-early-neuronal-apoptosis
#9
Fabrício do Couto Nicola, Marília Rossato Marques, Felipe Odorcyk, Danusa Mar Arcego, Letícia Petenuzzo, Dirceu Aristimunha, Adriana Vizuete, Eduardo Farias Sanches, Daniela Pavulack Pereira, Natasha Maurmann, Carla Dalmaz, Patricia Pranke, Carlos A Netto
Stem cells from human exfoliated deciduous teeth (SHED) transplants have been investigated as a possible treatment strategy for spinal cord injuries (SCI) due to their potential for promoting functional recovery. The aim of present study was to investigate the effects of SHED on neuronal death after an experimental model of SCI. METHODS: Wistar rats were spinalized using NYU impactor®. Animals were randomly distributed into 4 groups: Control (Naive) or Surgical control, Sham (laminectomy with no SCI); SCI (laminectomy followed by SCI, treated with vehicle); SHED (SCI treated with intraspinal transplantation of 3×10(5) SHED, 1 h after SCI)...
March 16, 2017: Brain Research
https://www.readbyqxmd.com/read/28320193/good-outcome-of-brain-stem-progressive-multifocal-leukoencephalopathy-in-an-immunosuppressed-renal-transplant-patient-importance-of-early-detection-and-rapid-immune-reconstitution
#10
Roland Sauer, Philipp Gölitz, Johannes Jacobi, Stefan Schwab, Ralf A Linker, De-Hyung Lee
Progressive multifocal leukoencephalopathy (PML) is a rare, opportunistic and often fatal disease of the CNS which may occur under immunosuppression in transplant patients. Brain stem PML is associated with a particularly bad prognosis. Here, we present a case of a renal transplant patient treated with mycophenolate mofetil (MMF) and tacrolimus who developed brain stem PML with limb ataxia, dysarthria and dysphagia. Diagnosis was established by typical MRI features and detection of JCV-DNA in the CSF. Immune reconstitution after stopping MMF and tacrolimus led to a complete and sustained remission of symptoms with improvement of the brain stem lesion over a follow-up over 20months...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28298297/angiogenic-mechanisms-of-human-cd34-stem-cell-exosomes-in-the-repair-of-ischemic-hindlimb
#11
Prabhu Mathiyalagan, Yaxuan Liang, David Kim, Sol Misener, Tina Thorne, Christine E Kamide, Ekaterina Klyachko, Douglas W Losordo, Roger J Hajjar, Susmita Sahoo
RATIONALE: Paracrine secretions seem to mediate therapeutic effects of human CD34(+) stem cells locally transplanted in patients with myocardial and critical limb ischemia and in animal models. Earlier, we had discovered that paracrine secretion from human CD34(+) cells contains proangiogenic, membrane-bound nanovesicles called exosomes (CD34Exo). OBJECTIVE: Here, we investigated the mechanisms of CD34Exo-mediated ischemic tissue repair and therapeutic angiogenesis by studying their miRNA content and uptake...
April 28, 2017: Circulation Research
https://www.readbyqxmd.com/read/28295266/cutaneous-phaeohyphomycosis
#12
Mariana P Caviedes, Ana C Torre, Maite Lisa Eliceche, Denise C Valdivia Monteros, Victoria I Volonteri, Ricardo L Galimberti
BACKGROUND: Phaeohyphomycosis is an infrequent infection in human beings. However, in recent years, its prevalence has augmented in immunosuppressed patients (mostly in solid organ transplanted patients). Infection can be mucocutaneous or disseminated. In the former, the fungus inoculation occurs mainly through traumatism. Lesions may be polymorphic and asymptomatic, isolated or multiple, and are usually localized in exposed areas of the limbs and head. Treatment is not standardized. When possible, surgical resection of the lesion is combined with systemic antifungals...
April 2017: International Journal of Dermatology
https://www.readbyqxmd.com/read/28258850/angiogenic-characteristics-of-human-stromal-vascular-fraction-in-ischemic-hindlimb
#13
Enze Jin, Dong-Sik Chae, Mina Son, Sung-Whan Kim
INTRODUCTION: In this study, we sought to characterize the angio-vasculogenic property of human adipose tissue-derived stromal vascular fraction (SVF) and to determine the therapeutic potential of SVF in the context of experimental ischemia. Although human SVF is used for cell therapy, its angiogenic and vasculogenic characteristics have not been fully elucidated. METHODS AND RESULTS: We conducted flow cytometry, microarray, quantitative (q)-PCR, Matrigel tube formation assays and in vivo therapeutic assays using an ischemic hind limb mouse model...
May 1, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28249304/theoretical-implications-of-oxygenation-in-limb-replant-or-transplant
#14
Thomas M Suszynski, Nicholas T Haddock
No abstract text is available yet for this article.
March 1, 2017: Journal of Reconstructive Microsurgery
https://www.readbyqxmd.com/read/28244825/therapeutic-potential-of-adipose-derived-stem-cells-and-macrophages-for-ischemic-skeletal-muscle-repair
#15
Viktoriya Rybalko, Pei-Ling Hsieh, Laura M Ricles, Eunna Chung, Roger P Farrar, Laura J Suggs
AIM: Progressive ischemia due to peripheral artery disease causes muscle damage and reduced strength of the lower extremities. Autologous cell therapy is an attractive treatment to restore perfusion and improve muscle function. Adipose-derived stem cells (ASCs) have therapeutic potential in tissue repair, including polarizing effects on macrophages (MPs). MATERIALS & METHODS: Co-culture systems of ASCs and MPs were analyzed for gene and protein expression modifications in ASC-conditioned MPs...
March 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28241279/thiazolidinediones-and-advanced-liver-fibrosis-in-nonalcoholic-steatohepatitis-a-meta-analysis
#16
Giovanni Musso, Maurizio Cassader, Elena Paschetta, Roberto Gambino
Importance: Nonalcoholic steatohepatitis (NASH) is projected to be the leading cause of liver transplantation by 2020. Advanced fibrosis (stage F3-F4) on liver biopsy independently predicts all-cause and liver-related mortality in NASH. There are no known efficacious treatments for advanced fibrosis related to NASH. Thiazolidinedione therapy has been extensively evaluated in NASH, and new randomized clinical trials (RCTs) of its efficacy have been completed. Objective: To synthesize the evidence about the association of thiazolidinedione therapy with advanced liver fibrosis in NASH...
February 27, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28237523/erythematous-nodules-on-lower-limbs-in-a-kidney-transplantation-patient
#17
M G Ramírez-Arriola, M Moreno-Barón, M Ruz-Legaza, M Casado-Martín, J J Abad Vivás-Pérez
No abstract text is available yet for this article.
February 23, 2017: Revista de Gastroenterología de México
https://www.readbyqxmd.com/read/28235425/therapeutic-strategies-for-cell-based-neovascularization-in-critical-limb-ischemia
#18
REVIEW
Makoto Samura, Tohru Hosoyama, Yuriko Takeuchi, Koji Ueno, Noriyasu Morikage, Kimikazu Hamano
Critical limb ischemia (CLI) causes severe ischemic rest pain, ulcer, and gangrene in the lower limbs. In spite of angioplasty and surgery, CLI patients without suitable artery inflow or enough vascular bed in the lesions are often forced to undergo amputation of a major limb. Cell-based therapeutic angiogenesis has the potential to treat ischemic lesions by promoting the formation of collateral vessel networks and the vascular bed. Peripheral blood mononuclear cells and bone marrow-derived mononuclear cells are the most frequently employed cell types in CLI clinical trials...
February 24, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/28222055/ex-situ-perfusion-of-human-limb-allografts-for-24-hours
#19
Nicole L Werner, Fares Alghanem, Stephanie L Rakestraw, Dylan C Sarver, Bruce Nicely, Richard E Pietroski, Paul Lange, Steven M Rudich, Christopher L Mendias, Alvaro Rojas-Pena, John C Magee, Robert H Bartlett, Kagan Ozer
BACKGROUND: Vascularized composite allografts, particularly hand and forearm, have limited ischemic tolerance after procurement. In bilateral hand transplantations, this demands a 2 team approach and expedited transfer of the allograft, limiting the recovery to a small geographic area. Ex situ perfusion may be an alternative allograft preservation method to extend allograft survival time. This is a short report of 5 human limbs maintained for 24 hours with ex situ perfusion. METHODS: Upper limbs were procured from brain-dead organ donors...
March 2017: Transplantation
https://www.readbyqxmd.com/read/28209722/long-term-outcome-of-hematopoietic-stem-cell-transplantation-for-il2rg-jak3-scid-a-cohort-report
#20
Intan Juliana Abd Hamid, Mary A Slatter, Fiona McKendrick, Mark S Pearce, Andrew R Gennery
Hematopoietic stem cell transplantation (HSCT) cures the T-lymphocyte, B-lymphocyte, and natural killer (NK)-cell differentiation defect in interleukin-2 γ-chain receptor (IL2RG)/JAK3 severe combined immunodeficiency (SCID). We evaluated long-term clinical features, longitudinal immunoreconstitution, donor chimerism, and quality of life (QoL) of IL2RG/JAK3 SCID patients >2 years post-HSCT at our center. Clinical data were collated and patients/families answered PedsQL Generic Core Scale v4.0 questionnaires...
April 13, 2017: Blood
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