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Transplantation Induction

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https://www.readbyqxmd.com/read/28637076/-clinical-course-of-an-early-childhood-onset-granulomatosis-with-polyangiitis
#1
Marco Krasselt, Matthias Pierer, Kerstin Amann, Anette Bachmann, Tom H Lindner
History A 26-year-old male patient presented with an eight-week history of unspecific symptoms such as weight loss and fever. Besides, he also suffered from haemoptysis, cough, and arthralgia. Since the age of twelve years, the patient has been treated for Wegner's granulomatosis. At the age of 20 years he received a kidney transplant which failed only four years later. Investigations The relapse we clinically suspected was confirmed by CT scan showing bilateral pulmonary manifestations. Moreover, we found highly positive antibodies against proteinase 3...
June 2017: Deutsche Medizinische Wochenschrift
https://www.readbyqxmd.com/read/28636891/comparison-of-cyclophosphamide-thalidomide-dexamethasone-to-bortezomib-cyclophosphamide-dexamethasone-as-induction-therapy-for-multiple-myeloma-patients-in-brazil
#2
Suelen Vigolo, Joice Zuckermann, Rosane Isabel Bittencourt, Lúcia Silla, Diogo André Pilger
OBJECTIVE/BACKGROUND: Chemotherapy followed by autologous hematopoietic stem cell transplantation (HSCT) remains the standard treatment for multiple myeloma (MM). Thalidomide or bortezomib may be combined with cyclophosphamide and dexamethasone, in what are known as the CTD and VCD protocols, respectively. The objective of this study was to evaluate the clinical characteristics and response rates obtained with CTD and VCD, observing whether the inclusion of bortezomib to treat MM patients in Brazil increases therapeutic efficiency...
June 15, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28634034/absence-of-%C3%AE-chain-in-keratinocytes-alters-chemokine-secretion-resulting-in-reduced-immune-cell-recruitment
#3
Karolin Nowak, Daniela Linzner, Adrian J Thrasher, Paul F Lambert, Wei Li Di, Siobhan O Burns
Loss of function mutations in the common gamma (γc) chain cytokine receptor subunit give rise to severe combined immunodeficiency (SCID) characterised by lack of T and natural killer cells and infant death from infection. Haematopoietic stem cell transplantation or gene therapy offer cure but despite successful replacement of lymphoid immune lineages a long-term risk of severe cutaneous human papilloma virus (HPV) infections persists, possibly related to persistent γc-deficiency in other cell types. Here we demonstrate that keratinocytes, the only cell type directly infected by HPV, express functional γc and its co-receptors...
June 17, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28633036/recent-advances-in-understanding-multiple-myeloma
#4
REVIEW
Parameswaran Hari
There have been major recent advancements in the understanding and management of multiple myeloma which in turn has led to unprecedented survival outcomes for patients. Diagnostic and response criteria have been recently revised. Our understanding of clonal progression, evolution, and clonal tides will inform therapeutic choices and appropriate treatment for patients. Response rates to initial induction with modern triplet therapies containing proteasome inhibitors and immunomodulators have made this approach the global standard for initial treatment...
June 13, 2017: Hematology/oncology and Stem Cell Therapy
https://www.readbyqxmd.com/read/28626365/emergence-of-cd43-expressing-hematopoietic-progenitors-from-human-induced-pluripotent-stem-cells
#5
Katharina U Kessel, Anika Bluemke, Hans R Schöler, Holm Zaehres, Peter Schlenke, Isabel Dorn
BACKGROUND: The ex vivo generation of human hematopoietic stem cells (HSCs) with long-term repopulating capacity and multi-lineage differentiation potential represents the holy grail of hematopoiesis research. In principle, human induced pluripotent stem cells (hiPSCs) provide the tool for both studying molecular mechanisms of hematopoietic development and the ex vivo production of 'true' HSCs for transplantation purposes and lineage-specific cells, e.g. red blood cells, for transfusion purposes...
June 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/28624055/sevoflurane-preconditioning-protects-from-posttransplant-injury-in-mouse-lung-transplantation
#6
Yoshito Yamada, Isabelle Laube, Jae-Hwi Jang, John M Bonvini, Ilhan Inci, Walter Weder, Beatrice Beck Schimmer, Wolfgang Jungraithmayr
BACKGROUND: Although sevoflurane (Sevo) had been shown to ameliorate posttransplant injury in various organs, data available are inconsistent, particularly in the context of lung transplantation (Tx). We here investigated if preconditioning by Sevo can protect from posttransplant injury regarding both, primary graft dysfunction (PGD) and acute rejection (AR) after experimental lung Tx, thereby focusing on two important clinical outcome parameters. MATERIALS AND METHODS: Three experimental approaches were used: (1) BALB/c mice were preconditioned for 2 h with Sevo or a fentanyl cocktail (Control; n = 10); (2) syngeneic (Syn) mouse lung Tx (C57BL/6) with a Sevo-preconditioned graft followed by 18 h storage to mimic PGD (Syn-Tx, n = 12) versus controls (fentanyl cocktail); and (3) allogeneic (Allo) Tx (BALB/c, donor; C57BL/6, recipient) to mimic AR (Allo-Tx, n = 12) versus controls (fentanyl cocktail)...
June 15, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28623616/cyclosporine-a-mediated-il-6-expression-promotes-neural-induction-in-pluripotent-stem-cells
#7
Ashwathnarayan Ashwini, Sushma S Naganur, Bhaskar Smitha, Preethi Sheshadri, Jyothi Prasanna, Anujith Kumar
Differentiation of pluripotent stem cells (PSCs) to neural lineages has gathered huge attention in both basic research and regenerative medicine. The major hurdle lies in the efficiency of differentiation and identification of small molecules that facilitate neurogenesis would partly circumvent this limitation. The small molecule Cyclosporine A (CsA), a commonly used immunosuppressive drug, has been shown to enhance in vivo neurogenesis. To extend the information to in vitro neurogenesis, we examined the effect of CsA on neural differentiation of PSCs...
June 16, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28621420/the-retinal-pigmented-epithelium-from-basic-developmental-biology-research-to-translational-approaches
#8
Benjamin Amram, Yamit Cohen-Tayar, Ahuvit David, Ruth Ashery-Padan
The development of the eye has been a topic of extensive investigation, from the early studies on tissue induction to more recent breakthroughs in resolving the mechanism regulating progenitor patterning and their gradual and coordinated differentiation into diverse tissue types that function together throughout life. Among the ocular tissue types, the retinal pigmented epithelium (RPE) is at the forefront of developmental biology and stem cell research. The growing interest in this lineage stems from its importance for photoreceptor function as well as from its requirement during embryogenesis for the development of the photoreceptors and the choroid...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28621199/sciatic-nerve-regeneration-by-transplantation-of-in-vitro-differentiated-nucleus-pulposus-progenitor-cells
#9
Takayuki Ishii, Daisuke Sakai, Jordy Schol, Tomoko Nakai, Kaori Suyama, Masahiko Watanabe
AIM: To assess the applicability of mouse intervertebral disc-derived nucleus pulposus (NP) progenitor cells as a cell source for sciatic nerve regeneration. MATERIALS & METHODS: P0-Cre/Floxed-EGFP-transgenic mouse-derived NP progenitor cells were differentiated to Schwann-like cells in conventional induction medium. Schwann-like cells were subsequently transplanted into a mouse model of sciatic nerve transection, and nerve regeneration assessed by immunohistochemistry, electron microscopy and functional walking track analysis and heat stimulus reflex...
June 16, 2017: Regenerative Medicine
https://www.readbyqxmd.com/read/28620195/attenuation-of-cgvhd-by-c5a-c5ar-blockade-is-associated-with-increased-frequency-of-treg
#10
Yulian Wang, Peilong Lai, Xiaomei Chen, Chang He, Xin Huang, Suxia Geng, Chenwei Luo, Suijing Wu, Wei Ling, Liye Zhong, Zesheng Lu, Peng Li, Jianyu Weng, Xin Du
C5aR signaling plays an important role in the regulation of T cell activation and alloimmune responses in chronic graft-versus-host disease (cGVHD). However, direct evidence of this modulation and the efficacy of C5aR blockade in the treatment of cGVHD have not been demonstrated. We observed higher expression of C5aR on both monocytes and T cells of patients with cGVHD compared with healthy controls and non-GVHD patients after allogeneic hematopoietic stem cell transplantation. Our data also demonstrated a significant negative correlation between C5aR expression and regulatory T cells (Treg) frequency in cGVHD patients, indicating a potential role of C5aR in the generation and regulation of Treg...
June 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28619384/risk-stratification-to-determine-the-impact-of-induction-therapy-on-survival-rejection-and-adverse-events-after-pediatric-heart-transplant-a-multi-institutional-study
#11
Chesney Castleberry, Elizabeth Pruitt, Rebecca Ameduri, Kenneth Schowengerdt, Erik Edens, Nancy Hagin, James K Kirklin, David Naftel, Simon Urschel
BACKGROUND: Induction therapy is increasingly being used in pediatric heart transplantation. General versus risk-adapted use remains controversial. We aimed to determine the impact of induction therapy on outcomes after stratifying patients by diagnosis and risk. METHODS: The Pediatric Heart Transplant Study (PHTS) database was used to identify patients (age ≤18 years) who underwent transplantation between January 1, 2001 and December 31, 2014. Patients were excluded if they survived <48 hours or received multiple induction agents...
May 11, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28619045/human-adipose-derived-mesenchymal-stem-cells-alleviate-obliterative-bronchiolitis-in-a-murine-model-via-ido
#12
Guoping Zheng, Guanguan Qiu, Menghua Ge, Jianping He, Lanfang Huang, Ping Chen, Wei Wang, Qi Xu, Yaoqin Hu, Qiang Shu, Jianguo Xu
BACKGROUND: Long-term survival of lung transplantation is hindered by the development of obliterative bronchiolitis (OB). Adipose-derived stem cells (ASCs) were documented to have more potent immunosuppressive ability than mesenchymal stem cells (MSCs) from bone marrow and placenta. The goal of our study is to evaluate the effect of repeated administration of ASCs on OB and the involvement of indoleamine 2,3-dioxygenase (IDO) mediating the protective effect of ASCs in a heterotopic tracheal transplantation (HTT) model...
June 15, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28618138/expansion-of-umbilical-cord-blood-aldehyde-dehydrogenase-expressing-cells-generates-myeloid-progenitor-cells-that-stimulate-limb-revascularization
#13
David M Putman, Tyler T Cooper, Stephen E Sherman, Ayesh K Seneviratne, Mark Hewitt, Gillian I Bell, David A Hess
Uncompromised by chronic disease-related comorbidities, human umbilical cord blood (UCB) progenitor cells with high aldehyde dehydrogenase activity (ALDH(hi) cells) stimulate blood vessel regeneration after intra-muscular transplantation. However, implementation of cellular therapies using UCB ALDH(hi) cells for critical limb ischemia, the most severe form of severe peripheral artery disease, is limited by the rarity (<0.5%) of these cells. Our goal was to generate a clinically-translatable, allogeneic cell population for vessel regenerative therapies, via ex vivo expansion of UCB ALDH(hi) cells without loss of pro-angiogenic potency...
June 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28616699/flt3-itd-with-dnmt3a-r882-double-mutation-is-a-poor-prognostic-factor-in-chinese-patients-with-acute-myeloid-leukemia-after-chemotherapy-or-allogeneic-hematopoietic-stem-cell-transplantation
#14
Shanhao Tang, Hongjie Shen, Xinliang Mao, Haiping Dai, Xiaming Zhu, Shengli Xue, Zixuan Ding, Jing Lu, Depei Wu, Xiaowen Tang
To investigate clinical characteristics and outcomes of transplantation in AML patients with FLT3-ITD/DNMT3A double mutation, we retrospectively analyzed 206 Chinese patients with AML after Sanger sequencing. Our analysis showed that AML patients with FLT3-ITD and DNMT3A R882 mutations had a higher white blood cell count and a lower complete remission (CR) rate after first induction chemotherapy. All 206 patients received allogeneic hematopoietic stem cell transplantation (allo-HSCT) in status of CR. These results indicate that AML patients with FLT3-ITD and DNMT3A R882 double mutation show a higher 2-year cumulative incidence of relapse (CIR), lower 2-year overall survival (OS) rate, and lower 2-year leukocyte-free survival (LFS) after allo-HSCT...
June 14, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/28613442/the-effect-of-different-immunoprophylaxis-regimens-on-post-transplant-cytomegalovirus-cmv-infection-in-cmv-seropositive-liver-transplant-recipients
#15
Chian Yong Low, Seyed Mohammadmehdi Hosseini-Moghaddam, Coleman Rotstein, Eberhard L Renner, Shahid Husain
INTRODUCTION: The effects of different immunoprophylaxis regimens on cytomegalovirus (CMV) infection in liver transplant recipients (LTRs) have not been compared. METHODS: In a cohort, we studied 343 CMV seropositive recipient (R+) and 83 seronegative donor/recipient (D-/R-) consecutive LTRs from 2004 to 2007. Immunoprophylaxis regimens included steroid-only, steroids plus rabbit anti-thymocyte globulin (rATG), and steroids plus basiliximab. Logistic regression analysis, Cox proportional hazards regression model, and log-rank test were performed for multivariate analysis as appropriate...
June 14, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28612983/systematic-review-with-meta-analysis-faecal-microbiota-transplantation-for-the-induction-of-remission-for-active-ulcerative-colitis
#16
REVIEW
S P Costello, W Soo, R V Bryant, V Jairath, A L Hart, J M Andrews
BACKGROUND: Faecal microbiota transplantation (FMT) is emerging as a novel therapy for ulcerative colitis (UC). Interpretation of efficacy of FMT for UC is complicated by differences among studies in blinding, FMT administration procedures, intensity of therapy and donor stool processing methods. AIM: To determine whether FMT is effective and safe for the induction of remission in active UC. METHODS: Medline (Ovid), Embase and the Cochrane Library were searched from inception through February 2017...
June 14, 2017: Alimentary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28612523/-protective-effects-of-intraventricular-transplanted-human-umbilical-cord-derived-mesenchymal-stem-cells-on-hypoxic-ischemic-brain-damages-in-rats
#17
Xue Fan, Xiao-Hong Bai, Juan Chen, Qian Wan, Qiang Chen, De-Zhi Mu
OBJECTIVES: To determine the therapeutic effect and protective mechanism of human umbilical cord-derived mesenchymal stem cells (hUC-MSCs) on newborn rats with hypoxia ischemic brain damage (HIBD). METHODS: Umbilical cord (3-4 cm) was collected from a healthy male infant for preparation of hUC-MSCs using explants technique. The hUC-MSCs were cultured and labeled with BrdU. The differentiation function of MSCs was identified. Healthy SPF grade neonatal SD rats were randomly divided into sham (n =30), HIBD (n =36) and hUC-MSCs treated HIBD (n =32) groups...
March 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/28611473/apc-targeted-proinsulin-expression-inactivates-insulin-specific-memory-cd8-t-cells-in-nod-mice
#18
Peta Ls Reeves, Rajeev Rudraraju, Xiao Liu, F Susan Wong, Emma E Hamilton-Williams, Raymond J Steptoe
Type 1 diabetes (T1D) results from T-cell mediated autoimmune destruction of pancreatic β cells. Effector T-cell responses emerge early in disease development and expand as disease progresses. Following β cell destruction, a long-lived T-cell memory is generated that represents a barrier to islet transplantation and other cellular insulin-replacement therapies. Development of effective immunotherapies that control or ablate β cell destructive effector and memory T cell responses has the potential to prevent disease progression and recurrence...
June 14, 2017: Immunology and Cell Biology
https://www.readbyqxmd.com/read/28608641/risk-factors-for-pneumocystis-pneumonia-after-the-first-6-months-following-renal-transplantation
#19
Emmanuel Faure, Arnaud Lionet, Eric Kipnis, Christian Noël, Marc Hazzan
Pneumocystis pneumonia (PCP) incidence was decreased in renal transplant thanks to prophylaxis, recommended during the first months after transplantation. However, many late PCP cases are observed after the first 6 months and recommendations to maintain or reintroduce prophylaxis are lacking. The objective of the study was to identify risk factors to guide the individual prescription of prophylaxis, 6 months after transplantation. Thirty-three late PCP cases were identified between 1995 and 2012 in Lille Hospital, France, and were compared to 72 randomized controls transplant recipients...
June 13, 2017: Transplant Infectious Disease: An Official Journal of the Transplantation Society
https://www.readbyqxmd.com/read/28605832/comparison-of-reprogramming-methods-for-generation-of-induced-oligodendrocyte-precursor-cells
#20
Eun-Hye Lee, Chang-Hwan Park
Direct conversion by trans-differentiation is of growing interest in cell therapy for incurable diseases. The efficiency of cell reprogramming and functionality of converted cells are important considerations in cell transplantation therapy. Here, we compared two representative protocols for the generation of induced-oligodendrocyte progenitor cells (iOPCs) from mouse and rat fibroblasts. Then, we showed that induction of Nkx6.2, Olig2, and Sox10 (NOS) was more effective in mouse fibroblasts and that induction of Olig2, Sox10, and Zfp536 (OSZ) was more effective at reprogramming iOPCs from rat fibroblasts...
June 14, 2017: Biomolecules & Therapeutics
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