Scientists Use DNA 'Velcro' To Print Human Tissue In The Lab

We need more organs. At any given moment, more than 123,000 Americans are waiting for an organ transplant. Each year, 6,500 of them die for want of a donor. Moreover, between 15 and 50 percent of patients lucky enough to receive a transplant from a donor -- depending on the organ -- suffer from acute organ rejection within five years. For that reason, scientists across the country are racing to develop a way to grow organs in the lab. The dream is to eventually use a patient's own cells to construct new kidneys, livers, hearts and lungs that would be impervious to rejection by their immune systems -- in other words, a way to let patients be their own organ donors.  What makes this hard is that the techniques humans use for manufacturing most things don't work for organs. A car "has lots of pieces, and they fit together very nicely, and they're guided to the correct position by a human hand or a robot, and then welded together into this complex machine," said Dr. Zev Gartner, an associate professor of pharmaceutical chemistry at the University of California, San Francisco. "Tissues and organs, on the other hand, self-assemble in a process that's guided by rules that are quite distinct from the way that we as humans think about building stuff." One key challenge is getting blood vessels to the right place. It's essential, because blood vessels deliver life-sustaining oxygen and nutrients to the cells, but the tiny...
Source: Science - The Huffington Post - Category: Science Source Type: news

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AbstractThe overall aim of this scoping review of the literature is twofold: (1) to provide an overview of all instruments that have been used to assess health-related quality of life (HRQoL) after solid organ transplantation and (2) to provide a list of health items they include to support future studies on the development of a new-generation HRQoL instrument. All studies that administered any form of HRQoL instrument to post-transplant solid organ recipients were identified in a comprehensive search of PubMed (MEDLINE), Embase, and Web of Science, with a cut-off date of May 2018. The search used various combinations of t...
Source: The Patient - Patient-Centered Outcomes Research - Category: International Medicine & Public Health Source Type: research
Abstract The author concludes lessons learned from Hungary joining Eurotransplant five years ago through the more than half a century history of the Hungarian organ transplantation. The result of the stepwise evolution is that today's transplantation activity can be measured by a European benchmark. In comparison to the era before the membership, there are 40% more transplantations in the country. First the numbers of the living donor kidney transplantations significantly raised, followed by the organs transplanted from brain-dead donors: kidney, heart, pancreas, then liver and finally also lung. The ratio of the ...
Source: Orvosi Hetilap - Category: General Medicine Authors: Tags: Orv Hetil Source Type: research
Authors: Salehi S, Tran K, Grayson WL Abstract In the past, a diagnosis of organ failure would essentially be a death sentence for patients. With improved techniques for organ procurement and surgical procedures, transplantations to treat organ failure have become standard medical practice. However, while the demand for organs has skyrocketed, the donor pool has not kept pace leading to long recipient waiting lists. Organ preservation provides a means to increase the number of available transplantable organs. However, there are significant drawbacks associated with cold storage, the current gold standard. To addres...
Source: The Yale Journal of Biology and Medicine - Category: Universities & Medical Training Tags: Yale J Biol Med Source Type: research
Conclusion: This study demonstrates that organ transplant recipients, and especially children, are at increased risk of postoperative complications after cochlear implantation in comparison with healthy CI recipients.
Source: Otology and Neurotology - Category: ENT & OMF Tags: Cochlear Implants Source Type: research
A history of melanoma within the preceding 5 years is commonly considered a contraindication to solid organ transplantation. We investigated how a pretransplant history of melanoma impacts patient survival and melanoma recurrence. Institutional Review Board approval was obtained, and Duke’s retrospective database was used to identify 4552 patients who underwent a solid organ transplant at Duke University from 1 January 2001 to 31 December 2016. Data with regard to the transplant, melanoma characteristics, rejection episodes, and survival were recorded. Of 4552 patients who underwent a solid organ transplant, 12 (0.3%...
Source: Melanoma Research - Category: Cancer & Oncology Tags: Short Communications Source Type: research
Conclusion Employment status pre-transplant being highly associated with employment status post-transplant, the process promoting return to work should be started well before surgery. Biomedical, psychological and social factors must be taken into account to promote return to work in transplanted patients.
Source: Journal of Occupational Rehabilitation - Category: Rehabilitation Source Type: research
Publication date: Available online 20 August 2018Source: Indian Heart JournalAuthor(s): Shayan Marsia, Ariba Khan, Maryam Khan, Saba Ahmed, Javeria Hayat, Abdul Mannan Khan Minhas, Samir Mirza, Nisar Asmi, Jonathon ConstantinAbstractDonors after brain dead (DBD) have been the major source of organ donation due to good perfusion of the organs. However, due to the mismatch in demand and supply of the organ donors and recipients, organ donation after circulatory death has increased recently all over the world. Kidneys, liver and lungs are being used for transplantation from Donors after circulatory death (DCDDs). Recently, he...
Source: Indian Heart Journal - Category: Cardiology Source Type: research
Abstract Despite decades of formidable exploration, multi-organ ischemia-reperfusion injury (IRI) encountered, particularly amongst elderly patients with clinical scenarios, such as age-related arteriosclerotic vascular disease, heart surgery and organ transplantation, is still an unsettled conundrum that besets clinicians. Remote ischemic conditioning (RIC), delivered via transient, repetitive noninvasive IR interventions to distant organs or tissues, is regarded as an innovative approach against IRI. Based on the available evidence, RIC holds the potential of affording protection to multiple organs or tissues, w...
Source: Aging - Category: Biomedical Science Authors: Tags: Aging (Albany NY) Source Type: research
We report that the disruption of excitation-contraction coupling contributes to impaired force generation in the mouse model of Sod1 deficiency. Briefly, we found a significant reduction in sarcoplasmic reticulum Ca2+ ATPase (SERCA) activity as well as reduced expression of proteins involved in calcium release and force generation. Another potential factor involved in EC uncoupling in Sod1-/- mice is oxidative damage to proteins involved in the contractile response. In summary, this study provides strong support for the coupling between increased oxidative stress and disruption of cellular excitation contraction mac...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Abstract BACKGROUND Donor hypernatremia has been associated with reduced graft and recipient survival after heart, liver, kidney, and pancreas transplantation. However, it is unknown what effect donor hypernatremia has on graft and recipient outcomes after lung transplantation. The aim of this study was to investigate the relation of donor hypernatremia with the duration of postoperative mechanical ventilation, the incidence of severe primary graft dysfunction, and survival following lung transplantation. MATERIAL AND METHODS We analyzed all consecutive lung transplantations performed in adult patients at our cent...
Source: Annals of Transplantation - Category: Transplant Surgery Authors: Tags: Ann Transplant Source Type: research
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