Read by QxMD icon Read

Protocol transplant biopsy

Joke I Roodnat, Anneke M E de Mik-van Egmond, Wesley J Visser, Stefan P Berger, Wilbert A G van der Meijden, Felix Knauf, Madelon van Agteren, Michiel G H Betjes, Ewout J Hoorn
Background: Enteric hyperoxaluria due to malabsorption may cause chronic oxalate nephropathy and lead to end-stage renal disease. Kidney transplantation is challenging given the risk of recurrent calcium-oxalate deposition and nephrolithiasis. Methods: We established a protocol to reduce plasma oxalic acid levels peritransplantation based on reduced intake and increased removal of oxalate. The outcomes of 10 kidney transplantation patients using this protocol are reported...
December 2017: Transplantation Direct
Tianyi Xia, Sang Zhu, Yan Wen, Shouhong Gao, Mingming Li, Xia Tao, Feng Zhang, Wansheng Chen
Background: Nephrotoxicity of calcineurin inhibitors (CNIs) is the major concern for long-term allograft survival despite its predominant role in current immunosuppressive regime after renal transplantation. CNI nephrotoxicity is multifactorial with demographic, environmental, and pharmacogenetic flexibility, whereas studies indicating risk factors for CNI nephrotoxicity obtained incomplete or conflicting results. Methods: A systematic review and meta-analysis of risk factors for CNI nephrotoxicity was performed on all retrieved studies through a comprehensive research of network database...
2018: Drug Design, Development and Therapy
Farid Froghi, Rahul Koti, Kurinchi Gurusamy, Susan Mallett, Douglas Thorburn, Linda Selves, Sarah James, Jeshika Singh, Manuel Pinto, Christine Eastgate, Margaret McNeil, Helder Filipe, Fatima Jichi, Nick Schofield, Daniel Martin, Brian Davidson
BACKGROUND: Patients with liver cirrhosis undergoing liver transplantation have a hyperdynamic circulation which persists into the early postoperative period making accurate assessment of fluid requirements challenging. Goal-directed fluid therapy (GDFT) has been shown to reduce morbidity and mortality in a number of surgery settings. The impact of GDFT in patients undergoing liver transplantation is unknown. A feasibility trial was designed to determine patient and clinician support for recruitment into a randomised controlled trial of GDFT following liver transplantation, adherence to a GDFT protocol, participant withdrawal, and to determine appropriate endpoints for a subsequent larger trial to evaluate the efficacy of GDFT in patients undergoing liver transplantation...
March 7, 2018: Trials
Nemin Zhu, Neal E Rowe, Paul R Martin, Sean S Luke, Thomas B Mcgregor, Frank Myslik, Vivian C Mcalister, Alp Sener, Patrick P Luke
INTRODUCTION: We sought to determine whether protocol biopsies could be used to guide treatment and improve outcomes in simultaneous pancreas-kidney (SPK) patients. METHODS: Between 2004 and 2013, protocol biopsies were performed on SPK patients at 3-6 months and one year post-transplant. Maintenance immunosuppression consisted of a calcineurin inhibitor, anti-proliferative agent, and corticosteroid. Corticosteroid was withdrawn in negative early biopsies, maintained in subclinical/borderline biopsies, and increased if Banff IB or greater rejection was identified...
February 23, 2018: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
Benjamin P T Loveday, Jennifer J Knox, Laura A Dawson, Ur Metser, Anthony Brade, Anne M Horgan, Steven Gallinger, Paul D Greig, Carol-Anne Moulton
BACKGROUND AND OBJECTIVES: Neoadjuvant chemoradiation and liver transplantation may be offered for unresectable perihilar cholangiocarcinoma (pCCA). This study aimed to determine the dropout rate and survival of patients who entered a national tri-modality protocol. METHOD: Patients enrolled Jan 2009-Aug 2015 were included. Enrolment criteria: ≤65 years, brush biopsy-proven unresectable pCCA <3.5 cm diameter. Conformal radiotherapy was given concurrently with Capecitabine...
February 2018: Journal of Surgical Oncology
G Kakourou, S Kahraman, G C Ekmekci, H A Tac, G Kourlaba, E Kourkouni, A Cervero Sanz, J Martin, H Malmgren, C Giménez, V Gold, F Carvalho, C Billi, J F C Chow, X Vendrell, G Kokkali, J Liss, J Steffann, J Traeger-Synodinos
STUDY QUESTION: Has PGD-HLA been successful relative to diagnostic and clinical efficacy? SUMMARY ANSWER: The diagnostic efficacy of PGD-HLA protocols was found lower in this study in comparison to published PGD-HLA protocols and to that reported for general PGD by ESHRE (78.5 vs 94.1% and vs 92.6%, respectively), while the clinical efficacy has proven very difficult to assess due to inadequate follow-up of both the ART/PGD and HSCT procedure outcomes. WHAT IS KNOWN ALREADY: The first clinical cases for PGD-HLA were reported in 2001...
February 8, 2018: Human Reproduction
Mary Carmelle Philogene, Sheng Zhou, Bonnie E Lonze, Serena Bagnasco, Sami Alasfar, Robert A Montgomery, Edward Kraus, Annette M Jackson, Mary S Leffell, Andrea A Zachary
Retrospective studies of angiotensin II type 1 receptor antibodies (AT1R-Ab) and anti-endothelial cell antibodies (AECA) have linked these antibodies to allograft injury. Because rising healthcare costs dictate judicious use of laboratory testing, we sought to define characteristics of kidney transplant recipients who may benefit from screening for non-HLA antibodies. Kidney recipients transplanted between 2011 and 2016 at Johns Hopkins, were evaluated for AT1R-Ab and AECA. Pre-transplant antibody levels were compared to clinical and biopsy indications of graft dysfunction...
February 8, 2018: Human Immunology
Joseph R Leventhal, Joshua Miller, James M Mathew, Sunil Kurian, Anat R Tambur, John Friedewald, Jane Charrette, Michael M Abecassis
Kidney transplant recipients given donor hematopoietic stem cells from their HLA-identical living related donors have now been followed between 5 and 9 ½ years post-operatively. Recipients who were designated as tolerant (Tol) have remained so since the last report when the 5 year (biopsy associated) milestone was reached. There has been 1 mortality of a Tol patient, unrelated to the study protocol, while 5 (of 15) have remained Tol between 7 & 8 ½ years post-operatively. There has been continuing elevated T-regulatory (CD4+CD25HighCD127-FOXP3+) cells in PBMC previously reported on...
January 30, 2018: Human Immunology
S Benjamens, S P Berger, A W J M Glaudemans, J S F Sanders, R A Pol, R H J A Slart
BACKGROUND: Clinicians use several diagnostic modalities to recognize post-transplant complications, such as acute tubular necrosis, acute rejection, urologic and vascular complications. Currently, there is no consensus about the best procedural approach to evaluate post-transplant renal dysfunction. Renal needle-biopsy is often required, however, this is invasive and may lead to sample errors and complications, and most clinicians prefer using one of the noninvasive diagnostic modalities...
December 29, 2017: Transplantation Reviews
Michael Kaabak, Nadeen Babenko, Ron Shapiro, Allan Zokoyev, Olga Dymova, Edward Kim
Ischemia-reperfusion injury has multiple effects on a transplanted allograft, including delayed or impaired graft function, compromised long-term survival, and an association with an increased incidence of rejection. Eculizumab, a monoclonal antibody blocking terminal complement activation, has been postulated to be an effective agent in the prevention or amelioration of IRI. We performed a single-center prospective, randomized controlled trial involving 57 pediatric kidney transplant recipients between 2012 and 2016...
January 29, 2018: Pediatric Transplantation
Tiziana Vinciguerra, Andrea Brunati, Ezio David, Filomena Longo, Michele Pinon, Fulvio Ricceri, Luisa Castellino, Antonio Piga, Maria Teresa Giraudo, Francesco Tandoi, Fabio Cisarò, Dominic Dell Olio, Giuseppe Isolato, Renato Romagnoli, Mauro Salizzoni, Pier Luigi Calvo
As graft survival in pediatric LT is often affected by progressive fibrosis, numerous centers carry out protocol liver biopsies. Follow-up biopsy protocols differ from center to center, but all biopsies are progressively spaced out, as time from transplant increases. Therefore, there is a need for non-invasive techniques to evaluate graft fibrosis progression in those children who have no clinical or serological signs of liver damage. Indirect markers, such as the APRI, should be relied on with caution because their sensitivity in predicting fibrosis can be strongly influenced by the etiology of liver disease, severity of fibrosis, and patient age...
January 25, 2018: Pediatric Transplantation
Shoichi Kageyama, Kojiro Nakamura, Takehiro Fujii, Bibo Ke, Rebecca A Sosa, Elaine F Reed, Nakul Datta, Ali Zarrinpar, Ronald W Busuttil, Jerzy W Kupiec-Weglinski
Hepatic ischemia-reperfusion injury (IRI) represents a major risk factor of early graft dysfunction and acute/chronic rejection as well as a key obstacle to expanding the donor pool in orthotopic liver transplantation (OLT). Although glucocorticoid receptor (GR) signaling may enhance cytoprotective programs, clinical use of glucocorticoid is limited due to adverse effects, while clinical relevance of GR-facilitated cytoprotection in OLT remains unknown. We aimed to evaluate the significance of hepatic GR in clinical OLT and verify the impact of recombinant human relaxin (rhRLX), which may function as GR agonist in tissue/disease-specific manner...
January 19, 2018: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
Antoine D Veron, Cécile Bienboire-Frosini, François Feron, Elisa Codecasa, Arnaud Deveze, Dany Royer, Paul Watelet, Pietro Asproni, Kevin Sadelli, Camille Chabaud, Jean-Claude Stamegna, Joël Fagot, Michel Khrestchatisky, Alessandro Cozzi, François S Roman, Patrick Pageat, Manuel Mengoli, Stéphane D Girard
BACKGROUND: Stem cell-based therapies are an attractive option to promote regeneration and repair defective tissues and organs. Thanks to their multipotency, high proliferation rate and the lack of major ethical limitations, "olfactory ecto-mesenchymal stem cells" (OE-MSCs) have been described as a promising candidate to treat a variety of damaged tissues. Easily accessible in the nasal cavity of most mammals, these cells are highly suitable for autologous cell-based therapies and do not face issues associated with other stem cells...
January 17, 2018: BMC Veterinary Research
Anna Huesing-Kabar, Christina Zu Dohna, Hauke Heinzow, Vito Rosario Cicinnati, Susanne Beckebaum, Martina Schmidt, Hans Ulrich Gerth, Michele Pohlen, Christian Wilms, Daniel Palmes, Hartmut Hans-Jürgen Schmidt, Iyad Kabar
BACKGROUND:  With regard to quality of life and organ shortage, follow-up after liver transplantation (LT) should consider risk factors for allograft failure in order to avoid the need for re-LT and to improve the long-term outcome of recipients. Therefore, the aim of this study was to explore potential risk factors for allograft failure after LT. MATERIAL AND METHODS:  A total of 489 consecutive LT recipients who received follow-up care at the University Hospital of Muenster were included in this study...
January 16, 2018: Zeitschrift Für Gastroenterologie
Josep M Cruzado, Ricardo Lauzurica, Julio Pascual, Roberto Marcen, Francesc Moreso, Alex Gutierrez-Dalmau, Amado Andrés, Domingo Hernández, Armando Torres, Maria Isabel Beneyto, Edoardo Melilli, Anna Manonelles, Manuel Arias, Manuel Praga
Introduction: Secondary hyperparathyroidism (SHPT) and vitamin D deficiency are common at kidney transplantation and are associated with some early and late complications. This study was designed to evaluate whether paricalcitol was more effective than nutritional vitamin D for controlling SHPT in de novo kidney allograft recipients. Methods: This was a 6-month, investigator-initiated, multicenter, open-label, randomized clinical trial. Patients with pretransplantation iPTH between 250 and 600 pg/ml and calcium <10 mg/dl were randomized to paricalcitol (PAR) or calcifediol (CAL)...
January 2018: KI Reports
Daniel Skuk, Jacques P Tremblay
We studied in macaques the evolution of the intramuscular transplantation of muscle precursor cells between the time of administration and the time at which the graft is considered stable. Satellite cell-derived myoblasts labeled with ß-galactosidase were transplanted into 1 cm3 muscle regions following cell culture and transplantation protocols similar to our last clinical trials. These regions were biopsied 1 h, 1, 3, 7 d, and 3 wk later and analyzed by histology. We observed that the cell suspension leaks from the muscle bundles during injection toward the epimysium and perimysium, where most cells accumulate after transplantation...
November 2017: Cell Transplantation
Chanjoong Choi, Sanghyun Ahn, Seung-Kee Min, Jongwon Ha, Curie Ahn, Yonsu Kim, Hajeong Lee, Sang-Il Min
BACKGROUND: Thin basement membrane nephropathy (TBMN) is the most common cause of persistent glomerular hematuria. Most individuals with TBMN show a benign course, although it can be difficult to distinguish it from early stages of progressive renal diseases. However, only limited studies address the prognosis of donors with TBMN and their recipients. METHODS: From 2007 to 2016, 11 recipients received kidney grafts from donors with TBMN, and their clinical data were analyzed retrospectively...
January 12, 2018: Transplantation
Tianshu Zhang, Agnes M Azimzadeh, Wenji Sun, Natalie A O'Neill, Evelyn Sievert, Emily Bergbower, Gheorghe Braileanu, Lars Burdorf, Xiangfei Cheng, Thomas Monahan, Siamak Dahi, Donald Harris, Elana Rybak, Emily Welty, Anthony Kronfli, Chris Avon, Richard N Pierson
BACKGROUND: Selective CD28 inhibition is actively pursued as an alternative to B7 blockade using CTLA4-Ig based on the hypothesis that the checkpoint immune regulators CTLA-4 and PD-L1 will induce tolerogenic immune signals. We previously showed that blocking CD28 using a monovalent nonactivating reagent (single chain anti-CD28 Fv fragment linked to alpha-1 anti-trypsin: sc28AT) synergizes with calcineurin inhibitors in nonhuman primate (NHP) kidney and heart transplantation. Here, we explored the efficacy of combining a 3-week 'induction" sc28AT treatment with prolonged CD154 blockade...
January 10, 2018: Transplantation
E Nordheim, R Horneland, E M Aandahl, K Grzyb, L Aabakken, V Paulsen, K Midtvedt, A Hartmann, T Jenssen
The surgical technique with duodeno- duodenal enteroanastomosis of pancreas transplants allows for representative endoscopic ultrasound guided needle biopsies of the donor duodenum and the pancreas graft. We assessed whether histological findings in transplanted donor duodenal biopsies can indicate rejection in the transplanted pancreas. From September 2012, a duodeno-duodenal enteroanastomosis has been default technique for pancreas transplantations at our center. In 67 recipients we prospectively examined 113 endoscopic ultrasound- guided procedures with representative biopsies from the duodenum- and the pancreas grafts (97 per protocol and 16 on indication)...
January 9, 2018: American Journal of Transplantation
Francisco Salcido-Ochoa, John Carson Allen
A literature review on immune monitoring in kidney transplantation produced dozens of research articles and a multitude of promising biomarkers, all in the quest for the much sought after - but perennially elusive - "holy grail" of kidney biomarkers able to unequivocally predict acute transplant rejection vs non-rejection. Detection methodologies and study designs were many and varied. Hence the motivation for this editorial, which espouses the notion that in today's kidney transplantation milieu, the judicious use of disease classifiers tailored to specific patient immune risks may be more achievable and productive in the long run and confer a greater advantage for patient treatment than the pursuit of a single "omniscient" biomarker...
December 24, 2017: World Journal of Transplantation
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"