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https://www.readbyqxmd.com/read/29691830/stem-cells-in-osteochondral-tissue-engineering
#1
Eleonora Pintus, Matteo Baldassarri, Luca Perazzo, Simone Natali, Diego Ghinelli, Roberto Buda
Mesenchymal stem cells (MSCs) are pluripotent stem cells with the ability to differentiate into a variety of other connective tissue cells, such as chondral, bony, muscular, and tendon tissue. Bone marrow-derived MSCs are pluripotent cells that can differentiate among others into osteoblasts, adipocytes and chondrocytes.Bone marrow-derived cells may represent the future in osteochondral repair. A one-step arthroscopic technique is developed for cartilage repair, using a device to concentrate bone marrow-derived cells and collagen powder or hyaluronic acid membrane as scaffolds for cell support and platelet gel...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/29691342/human-cytomegalovirus-encodes-a-novel-flt3-receptor-ligand-necessary-for-hematopoietic-cell-differentiation-and-viral-reactivation
#2
Lindsey B Crawford, Jung Heon Kim, Donna Collins-McMillen, Byeong-Jae Lee, Igor Landais, Christine Held, Jay A Nelson, Andrew D Yurochko, Patrizia Caposio
The ability of human cytomegalovirus (HCMV) to reactivate from latent infection of hematopoietic progenitor cells (HPCs) is intimately linked to cellular differentiation. HCMV encodes UL7 that our group has shown is secreted from infected cells and induces angiogenesis. In this study, we show that UL7 is a ligand for Fms-like tyrosine kinase 3 receptor (Flt-3R), a well-known critical factor in HPC differentiation. We observed that UL7 directly binds Flt-3R and induces downstream signaling cascades, including phosphatidylinositol 3-kinase (PI3K)/Akt and mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase (ERK) pathways...
April 24, 2018: MBio
https://www.readbyqxmd.com/read/29689547/sirt3-facilitates-amniotic-fluid-stem-cells-to-repair-diabetic-nephropathy-through-protecting-mitochondrial-homeostasis-by-modulation-of-mitophagy
#3
Jianxun Feng, Chang Lu, Qin Dai, Junqin Sheng, Min Xu
BACKGROUND/AIMS: Amniotic fluid stem cells (AFSCs) transplantation is a promising therapeutic strategy for diabetic nephropathy. Sirtuin3 (SIRT3) is a novel mitochondrial protective factor. In the present study, we aimed to investigate whether SIRT3 protects against hyperglycemia-induced AFSCs damage and enhances the therapeutic efficiency of AFSCs in diabetic nephropathy. METHODS: To establish the diabetic nephropathy model, db/ db mice were used. AFSCs were obtained and transplanted into the kidney tissue of db/ db mice...
April 19, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29688849/cryptococcoma-of-a-transplanted-kidney-in-a-patient-presenting-with-recurrent-urinary-tract-infection-a-case-report
#4
Albert Z Muranda, Ludolf Greeff, Mike M Sathekge, Thabo Lengano, Victor O L Karusseit
BACKGROUND: Cryptococcosis is an important opportunistic infection of organ transplant recipients. It is the third most common fungal infection of transplant patients and occurs especially in kidney recipients. Cryptococcus neoformans is a ubiquitous fungus which infects humans by inhalation of spores. C. gattii has more recently been recognised as a pathogen. Infection commonly is disseminated affecting mainly the central nervous system and the lungs. Cryptococcoma, a localised form of the disease, has been described in various organs...
April 23, 2018: BMC Nephrology
https://www.readbyqxmd.com/read/29687961/human-leukocyte-antigens-antibodies-after-lung-transplantation-primary-results-of-the-halt-study
#5
Ramsey R Hachem, Malek Kamoun, Marie M Budev, Medhat Askar, Vivek N Ahya, James C Lee, Deborah J Levine, Marilyn S Pollack, Gundeep S Dhillon, David Weill, Kenneth B Schechtman, Lorriana E Leard, Jeffrey A Golden, LeeAnn Baxter-Lowe, Thalachallour Mohanakumar, Dolly B Tyan, Roger D Yusen
Donor-specific antibodies (DSA) to mismatched human leukocyte antigens (HLA) are associated with worse outcomes after lung transplantation. To determine the incidence and characteristics of DSA early after lung transplantation, we conducted a prospective multi-center observational study that used standardized treatment and testing protocols. Among 119 transplant recipients, 43 (36%) developed DSA: 6 (14%) developed DSA only to class I HLA, 23 (53%) developed DSA only to class II HLA, and 14 (33%) developed DSA to both class I and class II HLA...
April 24, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29686829/the-potential-role-of-bioengineering-and-three-dimensional-printing-in-curing-global-corneal-blindness
#6
REVIEW
Parker E Ludwig, Trevor J Huff, Jorge M Zuniga
An insufficiency of accessible allograft tissue for corneal transplantation leaves many impaired by untreated corneal disease. There is promise in the field of regenerative medicine for the development of autologous corneal tissue grafts or collagen-based scaffolds. Another approach is to create a suitable corneal implant that meets the refractive needs of the cornea and is integrated into the surrounding tissue but does not attempt to perfectly mimic the native cornea on a cellular level. Materials that have been investigated for use in the latter concept include natural polymers such as gelatin, semisynthetic polymers like gelatin methacrylate, and synthetic polymers...
January 2018: Journal of Tissue Engineering
https://www.readbyqxmd.com/read/29686064/protection-from-cytomegalovirus-viremia-following-glycoprotein-b-vaccination-is-not-dependent-on-neutralizing-antibodies
#7
Ilona Baraniak, Barbara Kropff, Lyn Ambrose, Megan McIntosh, Gary R McLean, Sylvie Pichon, Claire Atkinson, Richard S B Milne, Michael Mach, Paul D Griffiths, Matthew B Reeves
Human cytomegalovirus (HCMV) is an important pathogen in transplant patients and in congenital infection. Previously, we demonstrated that vaccination with a recombinant viral glycoprotein B (gB)/MF59 adjuvant formulation before solid organ transplant reduced viral load parameters post transplant. Reduced posttransplant viremia was directly correlated with antibody titers against gB consistent with a humoral response against gB being important. Here we show that sera from the vaccinated seronegative patients displayed little evidence of a neutralizing antibody response against cell-free HCMV in vitro...
April 23, 2018: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29685843/clinical-units-to-set-up-chimeric-antigen-receptor-t-cell-therapy-car-t-cells-based-on-the-recommendations-of-the-francophone-society-of-bone-marrow-transplantation-and-cellular-therapy-sfgm-tc
#8
Ibrahim Yakoub-Agha
The Francophone Society of Bone Marrow Transplantation and Cellular Therapy (SFGM-TC) hold its eighth practice harmonization workshops on September 2017. In a workshop dedicated to chimeric antigen receptor T-cell therapy (CAR T-cells), the society issued recommendations regarding the prerequisite for hematopoietic cellular therapy programs to set up CAR T-cell therapy. In this article we focused on the prerequisite needed, in France, for a hematopoietic transplantation unit to start a CAR T-cell program with industrial manufactured cells within investigational products or after market access authorization...
April 20, 2018: Current Research in Translational Medicine
https://www.readbyqxmd.com/read/29685424/immunotherapy-for-the-treatment-of-hodgkin-lymphoma-an-evolving-paradigm
#9
REVIEW
Steven M Bair, Anthony Mato, Jakub Svoboda
Classical Hodgkin lymphoma (cHL) is one of the most common lymphomas in the Western world. Although most patients are cured with standard first-line therapy, up to 20% of patients will have relapsed or refractory disease. Although the conventional approach to treatment has consisted of chemotherapy, radiation, and for those who relapse, autologous or allogeneic transplantation, newer approaches have become available in recent years, including immunoconjugates and checkpoint inhibitors. These approaches have shown significant efficacy in clinical trials and might be associated with fewer long-term toxicities compared with conventional therapies...
March 31, 2018: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/29684562/bmt-following-non-myeloablative-treosulfan-conditioning-is-curative-in-a-murine-model-of-sickle-cell-disease
#10
Divya Devadasan, Chiao-Wang Sun, Erik R Westin, Li-Chen Wu, Kevin M Pawlik, Tim M Townes, Frederick D Goldman
Allogeneic hematopoietic stem cell transplantation (HSCT) can be curative for patients with sickle cell disease (SCD). However, morbidity associated with myeloablative conditioning and graft versus host disease has limited its utility. To this end, autologous HSCT for SCD using lentiviral gene-modified bone marrow (BM) or peripheral blood stem cells has been undertaken, though toxicities of fully ablative conditioning with busulfan and incomplete engraftment have been encountered. Treosulfan, a busulfan analog with a low extra-medullary toxicity profile, has been employed successfully as part of a myeloablative conditioning regimen in the allogeneic setting in SCD...
April 20, 2018: Biology of Blood and Marrow Transplantation
https://www.readbyqxmd.com/read/29684345/transplantation-of-creg-modified-embryonic-stem-cells-improves-cardiac-function-after-myocardial-infarction-in-mice
#11
Jian Zhang, Xiaoxiang Tian, Chengfei Peng, Chenghui Yan, Yang Li, Mingyu Sun, Jian Kang, Erhe Gao, Yaling Han
Engraftment of embryonic stem cells (ESC) has been proposed as a potential therapeutic approach for post-infarction cardiac dysfunction. However, only mild function improvement has been achieved due to low survival rate and paracrine dysfunction of transplanted stem cells. Cellular repressor of E1A stimulated genes (CREG) has been reported to be a secreted glycoprotein implicated in promoting survival and differentiation of many cell types. Therefore we hypothesized that transplantation of genetically modified ESC with CREG (CREG-ESC) can improve cardiac function after myocardial infarction in mice...
April 20, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29682351/comparative-analysis-of-cellular-and-growth-factor-composition-in-bone-marrow-aspirate-concentrate-and-platelet-rich-plasma
#12
Hisashi Sugaya, Tomokazu Yoshioka, Toshiki Kato, Yu Taniguchi, Hiroshi Kumagai, Kojiro Hyodo, Osamu Ohneda, Masashi Yamazaki, Hajime Mishima
The purpose of this study was to quantify the stem cell and growth factor (GF) contents in the bone marrow aspirate concentrate (BMAC) and platelet-rich plasma (PRP) prepared from whole blood using a protocol established in our laboratory. We examined 10 patients with osteonecrosis of the femoral head who were treated by autologous BMAC transplantation at our hospital between January 2015 and June 2015. We quantified CD34+ and CD31-CD45-CD90+CD105+ cells in BMAC and PRP by flow cytometry. Additionally, we measured various GFs, that is, basic fibroblast growth factor (b-FGF), platelet-derived growth factor-BB (PDGF-BB), vascular endothelial growth factor (VEGF), transforming growth factor- β 1 (TGF- β 1), and bone morphogenetic protein-2 (BMP-2) in BMAC and PRP using enzyme-linked immunosorbent assays and statistical analyses...
2018: Bone Marrow Research
https://www.readbyqxmd.com/read/29680337/t1-mapping-by-cardiac-magnetic-resonance-and-multidimensional-speckle-tracking-strain-by-echocardiography-for-the-detection-of-acute-cellular-rejection-in-cardiac-allograft-recipients
#13
Leyla Elif Sade, Tuncay Hazirolan, Hatice Kozan, Handan Ozdemir, Mutlu Hayran, Serpil Eroglu, Bahar Pirat, Atilla Sezgin, Haldun Muderrisoglu
OBJECTIVES: The aim of this study was to test the hypothesis that echocardiographic strain imaging, by tracking subtle alterations in myocardial function, and cardiac magnetic resonance T1 mapping, by quantifying tissue properties, are useful and complement each other to detect acute cellular rejection in heart transplant recipients. BACKGROUND: Noninvasive alternatives to endomyocardial biopsy are highly desirable to monitor acute cellular rejection. METHODS: Surveillance endomyocardial biopsies, catheterizations, and echocardiograms performed serially according to institutional protocol since transplantation were retrospectively reviewed...
April 14, 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29679753/daidzein-rich-isoflavone-aglycones-inhibit-cell-growth-and-inflammation-in-endometriosis
#14
O Takaoka, T Mori, F Ito, H Okimura, H Kataoka, Y Tanaka, A Koshiba, I Kusuki, S Shigehiro, T Amami, J Kitawaki
Endometriosis is an estrogen-dependent disease, and isoflavones interact with estrogen receptors. The purposes of this study are to investigate the in vitro and in vivo effects of daidzein-rich isoflavone aglycones (DRIAs), dietary supplements, on cellular proliferation in endometriosis. Stromal cells isolated from ovarian endometrioma (OESCs) and normal endometrium (NESCs) were cultured with DRIAs, i.e., each of the DRIA components (daidzein, genistein, or glycitein), or isoflavone glycosides (IG; DRIA precursors)...
April 18, 2018: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/29678307/viability-and-functionality-of-mesenchymal-stromal-cells-loaded-on-collagen-microspheres-and-incorporated-into-plasma-clots-for-orthopaedic-application-effect-of-storage-conditions
#15
Olga Wittig, Dylana Diaz-Solano, José Cardier
BACKGROUND: There is evidence showing that human mesenchymal stromal cells (MSC) seeded on collagen microspheres (CM) and incorporated into platelet rich plasma (PRP) clots induce bone formation. For clinical trials it is very important to establish standardization of storage and shipment conditions to ensure the viability and functionality of cellular products. We investigate the effect of storage temperature and time on the viability and functionality of human MSC seeded on CM and included into PRP clots for using in the further clinical application for bone regeneration...
April 5, 2018: Injury
https://www.readbyqxmd.com/read/29677072/state-of-the-art-role-of-the-dendritic-cell-in-induction-of-allograft-tolerance
#16
Sarah J Rosen, Paul E Harris, Mark A Hardy
Despite decades of research, the induction and maintenance of long-term allograft tolerance without immunosuppression remains an elusive goal in the field of solid organ and cell transplantation. Immunosuppressive medications frequently prevent or minimize acute cellular rejection but have failed to halt anti-donor antibody production and chronic organ rejection. Past efforts aimed at promoting lasting allograft tolerance have focused primarily on peripheral T cell depletion, augmentation of regulatory T cells, or induction via simultaneous hematopoietic stem cell transplantation and facilitation of donor chimerism...
April 19, 2018: Transplantation
https://www.readbyqxmd.com/read/29676812/impact-of-pretransplant-donor-specific-antibodies-on-kidney-allograft-recipients-with-negative-flow-cytometry-crossmatches
#17
Hyunwook Kwon, Young Hoon Kim, Ji Yoon Choi, Sung Shin, Joo Hee Jung, Su-Kil Park, Duck Jong Han
The Luminex test can detect low levels of donor-specific antibody (DSA) that cannot be detected by flow-cytometric crossmatching (FCXM) in kidney transplantation (KT). This study evaluated the impact of DSA on clinical outcomes in KT recipients negative on FCXM. Of 575 consecutive patients who underwent living donor KT between January 2013 and July 2016, 494 (85.9%) were DSA-negative and 81 (14.1%) were DSA-positive. Although rates of acute cellular rejection (ACR) at 1 year were similar in the two groups (P = 0...
April 20, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29673058/pediatric-heart-transplantation-across-a-positive-crossmatch-first-year-results-from-the-ctotc-04-multi-institutional-study
#18
S Webber, A Zeevi, K Mason, L Addonizio, E Blume, A Dipchand, R Shaddy, B Feingold, C Canter, D Hsu, W Mahle, B Armstrong, Y Morrison, D Ikle, H Diop, J Odim
Sensitization is common in pediatric heart transplant candidates and wait list mortality is high. Transplantation across a positive crossmatch may reduce wait time, but is considered high risk. We prospectively recruited consecutive candidates at 8 North American centers. At transplantation, subjects were categorized as non-sensitized or sensitized (presence of ≥1 HLA antibody with MFI ≥1,000 using single antigen beads). Sensitized subjects were further classified as CDC-crossmatch positive or negative and as DSA positive or negative...
April 19, 2018: American Journal of Transplantation
https://www.readbyqxmd.com/read/29672580/value-of-perioperative-genitourinary-screening-culture-and-colonization-status-in-predicting-early-urinary-tract-infection-after-renal-transplantation
#19
Ahram Han, Sanghyun Ahn, Seung-Kee Min, Jongwon Ha, Yon Su Kim, Curie Ahn, Sang-Il Min
BACKGROUND: We aimed to assess whether patients colonized with certain organisms in the genitourinary tract would have greater urinary tract infection (UTI) risk during the post-transplantation period, and whether information on the perioperatively colonized organisms may help identify the causal organisms during early UTI. METHODS: We retrospectively reviewed the culture results of preoperative urine, preoperative urethral swab, and postoperative urinary catheter tip specimens of 420 renal transplant recipients...
2018: PloS One
https://www.readbyqxmd.com/read/29671959/renal-sulfate-reabsorption-in-healthy-individuals-and-renal-transplant-recipients
#20
Adrian Post, Isidor Minović, Else van den Berg, Manfred L Eggersdorfer, Gerjan J Navis, Johanna M Geleijnse, Reinold O B Gans, Harry van Goor, Joachim Struck, Casper F M Franssen, Ido P Kema, Stephan J L Bakker
Inorganic sulfate is essential for normal cellular function and its homeostasis is primarily regulated in the kidneys. However, little is known about renal sulfate handling in humans and particularly in populations with impaired kidney function such as renal transplant recipients (RTR). Hence, we aimed to assess sulfate reabsorption in kidney donors and RTR. Plasma and urinary sulfate were determined in 671 RTR and in 251 kidney donors. Tubular sulfate reabsorption (TSR) was defined as filtered load minus sulfate excretion and fractional sulfate reabsorption (FSR) was defined as 1-fractional excretion...
April 2018: Physiological Reports
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