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https://www.readbyqxmd.com/read/29227284/cografting-astrocytes-improves-cell-therapeutic-outcomes-in-a-parkinson-s-disease-model
#1
Jae-Jin Song, Sang-Min Oh, Oh-Chan Kwon, Noviana Wulnansari, Hyun-Seob Lee, Mi-Yoon Chang, Eunsoo Lee, Woong Sun, Sang-Eun Lee, Sunghoe Chang, Heeyoung An, C Justin Lee, Sang-Hun Lee
Transplantation of neural progenitor cells (NPCs) is a potential therapy for treating neurodegenerative disorders, but this approach has faced many challenges and limited success, primarily because of inhospitable host brain environments that interfere with enriched neuron engraftment and function. Astrocytes play neurotrophic roles in the developing and adult brain, making them potential candidates for helping with modification of hostile brain environments. In this study, we examined whether astrocytic function could be utilized to overcome the current limitations of cell-based therapies in a murine model of Parkinson's disease (PD) that is characterized by dopamine (DA) neuron degeneration in the midbrain...
December 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29210109/xenotransplantation-back-to-the-future
#2
REVIEW
Raphael P H Meier, Yannick D Muller, Alexandre Balaphas, Philippe Morel, Manuel Pascual, Jörg D Seebach, Leo H Buhler
The field of xenotransplantation has fluctuated between great optimism and doubts over the last 50 years. The initial clinical attempts were extremely ambitious but faced technical and ethical issues that prompted the research community to go back to preclinical studies. Important players left the field due to perceived xenozoonotic risks and the lack of progress in pig-to-non-human-primate transplant models. Initial apparently unsurmountable issues appear now to be possible to overcome due to progress of genetic engineering, allowing the generation of multiple-xenoantigen knockout pigs that express human transgenes and the genome-wide inactivation of porcine endogenous retroviruses...
December 5, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/29203260/the-helsinki-face-transplantation-surgical-aspects-and-1-year-outcome
#3
Patrik Lassus, Andrew Lindford, Jyrki Vuola, Leif Bäck, Sinikka Suominen, Karri Mesimäki, Tommy Wilkman, Tuija Ylä-Kotola, Erkki Tukiainen, Hannu Kuokkanen, Jyrki Törnwall
BACKGROUND: Since 2005, at least 38 facial transplantations have been performed worldwide. We herein describe the surgical technique and 1-year clinical outcome in Finland's first face transplant case. METHODS: A 34-year-old male who had a severe facial deformity following ballistic trauma in 1999 underwent facial transplantation at the Helsinki University Hospital on 8th February 2016. Three-dimensional (3D) technology was used to manufacture donor and recipient patient-specific osteotomy guides and a donor face mask...
November 15, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/29191294/evolving-areas-in-heart-transplantation
#4
REVIEW
Brittany N Weber, Jon A Kobashigawa, Michael M Givertz
It has been 50 years since Dr. Christiaan Barnard performed the first human-to-human heart transplant in December 1967 in South Africa. Remarkable progress has been made since that time, including changes in surgical techniques, immunosuppression, donor and recipient selection, and post-transplant care. In this paper, we provide a perspective on the changing face of heart transplantation and highlight key evolving areas. Topics that are covered include advances in immunosuppression, screening for acute and chronic rejection, cardiac allograft vasculopathy, and ongoing advancements in cardiac replacement therapy, including xenotransplantation, stem-cell research, tissue engineering, and the total artificial heart...
December 2017: JACC. Heart Failure
https://www.readbyqxmd.com/read/29187136/results-of-a-patient-survey-for-assessment-services-in-renal-transplant-patients-with-a-history-of-cancer
#5
Andreas Ihrig, Imad Maatouk, Susanne Fink, Sascha Pahernik, Caner Süsal, Johannes Huber, Markus Hohenfellner, Martin Zeier, Carsten Grüllich
Patients with cancer who require a kidney transplant often face a prolonged time on the waiting list to ensure a sufficient relapse-free time. Patients and relatives were invited to the patient assessment service where they get an individualized risk assessment and a recommendation for transplantation and waiting period directly from an expert panel. We investigated in 31 patients who filled out questionnaires concerning depression, anxiety, distress, and quality of life and were interviewed for their satisfaction, experiences, and circumstances of the counseling...
December 2017: Progress in Transplantation
https://www.readbyqxmd.com/read/29186240/evaluation-of-treatment-response-to-autologous-transplantation-of-noncultured-melanocyte-keratinocyte-cell-suspension-in-patients-with-stable-vitiligo
#6
Mariana Gontijo Ramos, Daniel Gontijo Ramos, Camila Gontijo Ramos
BACKGROUND: Vitiligo is a chronic disease characterized by the appearance of achromic macules caused by melanocyte destruction. Surgical treatments with melanocyte transplantation can be used for stable vitiligo cases. OBJECTIVES: To evaluate treatment response to the autologous transplantation of noncultured epidermal cell suspension in patients with stable vitiligo. METHODS: Case series study in patients with stable vitiligo submitted to noncultured epidermal cell suspension transplantation and evaluated at least once, between 3 and 6 months after the procedure, to observe repigmentation and possible adverse effects...
May 2017: Anais Brasileiros de Dermatologia
https://www.readbyqxmd.com/read/29185252/multidrug-resistant-or-antimicrobial-resistant-pathogens-alternatives-to-new-antibiotics
#7
Anne-Sophie Brunel, Benoit Guery
For the last few decades, multidrug resistance has become an increasing concern for both Gram-positive and Gram-negative bacteria. The number of new molecules has dramatically decreased and antibiotic resistance is now a priority in the international community. Facing this new threat, a large number of new as well as "old" solutions are now being discussed in the medical community to propose an alternative to antibiotic treatments. A first option is to potentiate the effect of existing molecules through combinations to circumvent the individual molecule resistance...
November 29, 2017: Swiss Medical Weekly
https://www.readbyqxmd.com/read/29184909/gut-permeability-and-glucose-absorption-are-affected-at-early-stages-of-graft-rejection-in-a-small-bowel-transplant-rat-model
#8
Pablo Stringa, David Romanin, Natalia Lausada, Rodrigo Papa Gobbi, Carolina Zanuzzi, Pedro Martín, Juan Cruz Abate, Ana Cabanne, Nathalie Arnal, Leandro Vecchio, Verónica Milesi, Enrique Portiansky, Gabriel Gondolesi, Martin Rumbo
Background: Intestinal transplantation (ITx) faces many challenges due to the complexity of surgery and to the multiple immunological reactions that lead to the necessity of rigorous follow-up for early detection of acute cellular rejection (ACR). Our aim was to determine the kinetics of ACR using an experimental ITx model, with emphasis in the characterization of the process using different approaches, including the use of functional assays of absorptive and barrier function. Methods: ITx in rats conducting serial sampling was performed...
November 2017: Transplantation Direct
https://www.readbyqxmd.com/read/29183768/cardiovascular-and-renal-interactions-between-cyclosporine-and-nsaids-underlying-mechanisms-and-clinical-relevance
#9
REVIEW
Ahmed F El-Yazbi, Ali H Eid, Mahmoud M El-Mas
Cyclosporine, the prototype calcineurin inhibitor, transformed immunosuppressant regimens and practices post-organ transplantation. Therapeutic uses of cyclosporine branched out to include management of different autoimmune disorders. However, multiple additional effects posed significant clinical challenges in face of the prolonged nature of cyclosporine use. Significantly, cyclosporine produced nephrotoxic, cardiotoxic and neurotoxic effects in addition to alteration of hemodynamic function. These adverse effects are shared with other drug groups further complicating the therapeutic situation to include potential exacerbation in case of drug interactions...
November 25, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/29179687/faecal-microbiota-transplantation-a-regulatory-hurdle
#10
Frederick Verbeke, Yorick Janssens, Evelien Wynendaele, Bart De Spiegeleer
During faecal microbiota transplantation, stool from a healthy donor is transplanted to treat a variety of dysbiosis-associated gut diseases. Competent authorities are faced with the challenge to provide adequate regulation. Currently, regulatory harmonization is completely lacking and authorities apply non-existing to most stringent requirements. A regulatory approach for faecal microbiota transplantation could be inserting faecal microbiota transplantation in the gene-, cell- and tissue regulations, including the hospital exemption system in the European Advanced Therapy Medicinal Products regulation, providing a pragmatic and efficacy-risk balanced approach and granting all patients as a matter of principle access to this therapy...
November 28, 2017: BMC Gastroenterology
https://www.readbyqxmd.com/read/29178479/face-allotransplantation-for-various-types-of-facial-disfigurements-a-series-of-five-cases
#11
Ömer Özkan, Özlenen Özkan, Mehmetcan Ubur, Necmiye Hadimioğlu, Melike Cengiz, İsmail Afşar
BACKGROUND: The aim of this report is to present our long-term experiences with a series of 5 face-transplanted patients in terms of surgical aspects and postoperative outcomes, and to describe possible salvage strategies in case of difficulties. METHODS: Five patients, 4 receiving full-face transplantation and 1 undergoing partial transplantation at our institution were included. The patients were aged between 19 and 54 years. Two had extensive burn scars to the face, and 3 had suffered gunshot injuries...
November 27, 2017: Microsurgery
https://www.readbyqxmd.com/read/29177236/a-new-strategy-and-system-for-the-ex-vivo-ovary-perfusion-and-cryopreservation-an-innovation
#12
Mohamed Shehata Ali Mohamed
Children and young adults, who suffer from cancer, receive gonadotoxic therapy, which destroys their fertile abilities after survival. Ovarian cryopreservation and transplantation provide the promising solution to this problem, where the ovary can be removed before the gonadotoxic therapy and reimplanted after patient's survival, where the ovary is to be cryopreserved during the period of the therapy. However, cryopreservation of the whole ovary is still facing great obstacles, namely the ischemic reperfusion injury and the defective cryopreservation related to the defective ability to universally deliver the cryopreservation/warming solutions through the ovarian vascular bed...
June 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29156507/liver-transplantation-in-adults-with-liver-disease-due-to-common-variable-immunodeficiency-leads-to-early-recurrent-disease-and-poor-outcome
#13
Vian Azzu, Joshua E Elias, Adam Duckworth, Susan Davies, Rebecca Brais, Dinakantha S Kumararatne, Alexander E S Gimson, William J H Griffiths
Common variable immunodeficiency (CVID) is the commonest from of primary immunodeficiency characterized by antibody deficiency, recurrent bacterial infections and autoimmunity. Advanced chronic liver disease occurs in a subset of patients with CVID and manifests with various histological features such as nodular regenerative hyperplasia, inflammation, fibrosis and cholangiopathy. We present a case series characterizing the outcomes in adult patients transplanted for primary CVID-related liver disease. We discuss the unique transplantation challenges faced in this primary immunodeficiency group including susceptibility to infections and early disease recurrence...
November 20, 2017: Liver Transplantation
https://www.readbyqxmd.com/read/29156470/-functional-and-anatomic-outcomes-of-primary-and-secondary-internal-limiting-membrane-transplantation-in-large-and-persistent-macular-holes
#14
Jelka A Hess, Stephan Michels, Matthias D Becker
Background The gold standard therapy for full-thickness macular holes (FTMH) is vitrectomy (PPV) with peeling of the internal limiting membrane (ILM), gas tamponade of the vitreous cavity and postoperative face-down positioning. Nevertheless, eyes with large macular holes (> 400 µm) and surgical failures remain difficult to manage. Recently, ILM transplantation (ILM-TX) techniques were developed with acceptable results, advocating different mechanisms of hole closure: in such a setting, the ILM could serve as a scaffold for neuronal tissue in the pedicle ILM flap technique or the ILM could induce a contraction of the FTMH rims through shrinking of a folded ILM plug...
November 20, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/29155702/using-the-sleeve-technique-in-a-mouse-model-of-aortic-transplantation-an-instructional-video
#15
Zuzanna Rowinska, Simone Gorressen, Marc W Merx, Thomas A Koeppel, Alma Zernecke, Elisa A Liehn
Orthotopic aortic transplantation using the sleeve technique reduces injury to the aorta with failure rate of only 10-20%. The time to anastomose the aorta in mice using the sleeve method was short and easy averaging 20 min, permitting studies of iso/allo grafts. The following article describes the aortic transplantation procedure used in our laboratory. The mice were anesthetized with a mixture of 1.5% volume isoflurane and 100% oxygen through a face mask. At this point, the segment of the aorta between the renal arteries and its bifurcation was separated from the vena cava, freely prepared and clampedat the proximal and distal segments with a single silk suture...
October 22, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29149976/clinical-challenges-of-tacrolimus-for-maintenance-immunosuppression-post-lung-transplantation
#16
S Ivulich, M Dooley, C Kirkpatrick, G Snell
Lung transplantation (LTx) is a successful treatment option for end-stage lung disease, and immunosuppressant regimens, utilized to prevent rejection of the transplanted graft, are paramount to maintaining long-term graft survival. Immunosuppression can be classified as induction, maintenance, and antirejection therapy. This article focuses on maintenance immunosuppression that includes a combination of a calcineurin inhibitor (CNI), cell cycle inhibitor, and corticosteroid. CNIs remain the cornerstone of immunosuppression following LTx, and tacrolimus is now the preferred CNI, based on a better adverse effect profile and some limited evidence for enhanced efficacy...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149949/attitudes-toward-organ-donation-among-relatives-of-the-patients-who-are-being-followed-up-in-intensive-care-and-dialysis-units
#17
B Kahveci, K Topal, Ç Gereklioglu, H Aksoy
INTRODUCTION: This study sought to investigate attitudes toward organ donation (OD) among the relatives of patients who are being followed up in intensive care units (ICU) and dialysis units. MATERIALS AND METHODS: This cross-sectional study was conducted with relatives of the patients who were being followed up in hemodialysis (HD) and peritoneal dialysis (PD) units and Neurosurgery, Neurology, Anesthesia, and Reanimation ICUs of Adana Numune Research and Training Hospital...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29149947/impact-factors-and-attitudes-toward-organ-donation-among-transplantation-patients-and-their-caregivers-in-china
#18
Q-X Zhang, J-F Xie, J-D Zhou, S-S Xiao, A-Z Liu, G-Q Hu, Y Chen, C-Y Wang
PURPOSE: This study's purpose was to investigate the attitudes toward organ donation among renal transplantation patients and their caregivers. In addition, we sought to explore the impact factors that affect their attitudes toward deceased organ donation. DESIGN AND METHODS: A self-administrated questionnaire was used, which consisted of two parts: 1) demographic data, and 2) transplantation and donation-related data. This study was conducted in three transplantation follow-up centers in three hospitals using a cross-sectional approach...
November 2017: Transplantation Proceedings
https://www.readbyqxmd.com/read/29142746/interaction-between-merkel-cell-carcinoma-and-the-immune-system-pathogenetic-and-therapeutic-implications
#19
Irene Zanetti, Ilaria Coati, Mauro Alaibac
Merkel cell carcinoma (MCC) is a rare, aggressive primary cutaneous neuroendocrine carcinoma. It usually appears on the face and neck of elderly Caucasian people as a flesh-colored, erythematous or violaceous dome-shaped, non-tender nodule with a smooth surface. In immunocompromised patients with T-cell dysfunction, such as patients with acquired immunodeficiency syndrome (AIDS) or solid organ transplant recipients, the incidence of this disease is markedly increased. This suggests a link between the development of MCC and the immune system...
November 2017: Molecular and Clinical Oncology
https://www.readbyqxmd.com/read/29140906/nose-and-lips-graft-variants-a-subunit-anatomical-study
#20
Jérôme Duisit, Louis Maistriaux, Alexander Gerdom, Martial Vergauwen, Pierre Gianello, Catherine Behets, Benoît Lengelé
BACKGROUND: In the field of Vascularized Composite tissue Allotransplantation (VCA), the surgical design of facial subunit grafts is an evolving concept. The purpose of the present paper is to study the possibilities to divide the historical nose and lips face transplant into several morphological and functional subunit grafts, depending on their respective supply. METHODS: Our study was conducted in 20 adult cadavers. The facial artery and its branches were dissected bilaterally in 16 fresh and 4 embalmed heads...
November 11, 2017: Plastic and Reconstructive Surgery
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