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Transplant medicine

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https://www.readbyqxmd.com/read/28222169/decellularized-wharton-s-jelly-from-human-umbilical-cord-as-a-novel-3d-scaffolding-material-for-tissue-engineering-applications
#1
Sushma Jadalannagari, Gabriel Converse, Christopher McFall, Eric Buse, Michael Filla, Maria T Villar, Antonio Artigues, Adam J Mellot, Jinxi Wang, Michael S Detamore, Richard A Hopkins, Omar S Aljitawi
In tissue engineering, an ideal scaffold attracts and supports cells thus providing them with the necessary mechanical support and architecture as they reconstruct new tissue in vitro and in vivo. This manuscript details a novel matrix derived from decellularized Wharton's jelly (WJ) obtained from human umbilical cord for use as a scaffold for tissue engineering application. This decellularized Wharton's jelly matrix (DWJM) contained 0.66 ± 0.12 μg/mg sulfated glycosaminoglycans (GAGs), and was abundant in hyaluronic acid, and completely devoid of cells...
2017: PloS One
https://www.readbyqxmd.com/read/28220931/the-role-of-extracorporeal-photopheresis-in-the-management-of-cutaneous-t-cell-lymphoma-graft-versus-host-disease-and-organ-transplant-rejection-a-consensus-statement-update-from-the-uk-photopheresis-society
#2
Arun Alfred, Peter C Taylor, Fiona Dignan, Khaled El-Ghariani, James Griffin, Andrew R Gennery, Denise Bonney, Emma Das-Gupta, Sarah Lawson, Ram K Malladi, Kenneth W Douglas, Tracey Maher, Julie Guest, Laura Hartlett, Andrew J Fisher, Fiona Child, Julia J Scarisbrick
Extracorporeal photopheresis (ECP) has been used for over 35 years in the treatment of erythrodermic cutaneous T-cell lymphoma (CTCL) and over 20 years for chronic and acute graft-versus-host disease (GvHD) and solid organ transplant rejection. ECP for CTCL and GvHD is available at specialised centres across the UK. The lack of prospective randomised trials in ECP led to the development of UK Consensus Statements for patient selection, treatment schedules, monitoring protocols and patient assessment criteria for ECP...
February 21, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28219959/randomised-prospective-medico-economic-nationwide-french-study-of-islet-transplantation-in-patients-with-severely-unstable-type-1-diabetes-the-stabilot-study-protocol
#3
Sandrine Lablanche, Sandra David-Tchouda, Jennifer Margier, Edith Schir, Anne Wojtusciszyn, Sophie Borot, Laurence Kessler, Emmanuel Morelon, Charles Thivolet, François Pattou, Marie Christine Vantyghem, Thierry Berney, Pierre-Yves Benhamou
INTRODUCTION: Islet transplantation may be an appropriate treatment option for patients with severely unstable type 1 diabetes experiencing major glucose variability with severe hypoglycaemia despite intensive insulin therapy. Few data are available on the costs associated with islet transplantation in relation to its benefits. The STABILOT study proposes to assess the economic impact of islet transplantation in comparison with the current best medical treatment defined as sensor-augmented pump (SAP) therapy...
February 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/28219365/exploration-of-anti-cancer-effects-and-mechanisms-of-zuo-jin-wan-and-its-alkaloid-components-in-vitro-and-in-orthotopic-hepg2-xenograft-immunocompetent-mice
#4
Shun-Ting Chou, Chien-Yun Hsiang, Hsin-Yi Lo, Hui-Fen Huang, Ming-Tsung Lai, Ching-Liang Hsieh, Su-Yin Chiang, Tin-Yun Ho
BACKGROUND: Zuo-Jin-Wan (ZJW), a two-herb formula consisting of Coptis chinensis (CC) and Evodia rutaecarpa (ER), is commonly used in traditional Chinese medicine for the treatment of cancers. However, the efficacies and mechanisms of ZJW and its alkaloid components on cancers are still unclear. METHODS: Here we investigated the anti-cancer effects and mechanisms of ZJW, CC, ER, berberine, and evodiamine in cells and in intrahepatic xenograft mice. RESULTS: Treatment of HepG2 cells with ZJW, CC, ER, berberine, and evodiamine significantly displayed cytotoxic effects in a dose- and time-dependent manner...
February 20, 2017: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/28217369/regenerative-medicine-using-dental-pulp-stem-cells-for-liver-diseases
#5
EDITORIAL
Shogo Ohkoshi, Hajime Hara, Haruka Hirono, Kazuhiko Watanabe, Katsuhiko Hasegawa
Acute liver failure is a refractory disease and its prognosis, if not treated using liver transplantation, is extremely poor. It is a good candidate for regenerative medicine, where stem cell-based therapies play a central role. Mesenchymal stem cells (MSCs) are known to differentiate into multiple cell lineages including hepatocytes. Autologous cell transplant without any foreign gene induction is feasible using MSCs, thereby avoiding possible risks of tumorigenesis and immune rejection. Dental pulp also contains an MSC population that differentiates into hepatocytes...
February 6, 2017: World Journal of Gastrointestinal Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28213976/enhancement-of-%C3%AE-globin-gene-expression-in-thalassemic-ivs2-654-induced-pluripotent-stem-cell-derived-erythroid-cells-by-modified-u7-snrna
#6
Phetcharat Phanthong, Suparerk Borwornpinyo, Narisorn Kitiyanant, Natee Jearawiriyapaisarn, Lalana Nuntakarn, Jirawat Saetan, Tiwaporn Nualkaew, Khanit Sa-Ngiamsuntorn, Usanarat Anurathapan, Andras Dinnyes, Yindee Kitiyanant, Suradej Hongeng
The therapeutic use of patient-specific induced pluripotent stem cells (iPSCs) is emerging as a potential treatment of β-thalassemia. Ideally, patient-specific iPSCs would be genetically corrected by various approaches to treat β-thalassemia including lentiviral gene transfer, lentivirus-delivered shRNA, and gene editing. These corrected iPSCs would be subsequently differentiated into hematopoietic stem cells and transplanted back into the same patient. In this article, we present a proof of principle study for disease modeling and screening using iPSCs to test the potential use of the modified U7 small nuclear (sn) RNA to correct a splice defect in IVS2-654 β-thalassemia...
February 18, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28213970/efficacy-and-safety-of-immuno-magnetically-sorted-smooth-muscle-progenitor-cells-derived-from-human-induced-pluripotent-stem-cells-for-restoring-urethral-sphincter-function
#7
Yanhui Li, Morgaine Green, Yan Wen, Yi Wei, Prachi Wani, Zhe Wang, Renee Reijo Pera, Bertha Chen
Human-induced pluripotent stem cells (hiPSCs)-based cell therapy holds promise for treating stress urinary incontinence (SUI). However, safety concerns, especially tumorgenic potential of residual undifferentiated cells in hiPSC derivatives, are major barriers for its clinical translation. An efficient, fast and clinical-scale strategy for purifying committed cells is also required. Our previous studies demonstrated the regenerative effects of hiPSC-derived smooth muscle progenitor cells (pSMCs) on the injured urethral sphincter in SUI, but the differentiation protocol required fluorescence-activated cell sorting (FACS) which is not practical for autologous clinical applications...
February 18, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28213969/highly-efficient-neural-conversion-of-human-pluripotent-stem-cells-in-adherent-and-animal-free-conditions
#8
Dunja Lukovic, Andrea Diez Lloret, Petra Stojkovic, Daniel Rodríguez-Martínez, Maria Amparo Perez Arago, Francisco Javier Rodriguez-Jimenez, Patricia González-Rodríguez, José López-Barneo, Eva Sykova, Pavla Jendelova, Jelena Kostic, Victoria Moreno-Manzano, Miodrag Stojkovic, Shomi S Bhattacharya, Slaven Erceg
Neural differentiation of human embryonic stem cells (hESCs) and induced pluripotent stem cells (hiPSCs) can produce a valuable and robust source of human neural cell subtypes, holding great promise for the study of neurogenesis and development, and for treating neurological diseases. However, current hESCs and hiPSCs neural differentiation protocols require either animal factors or embryoid body formation, which decreases efficiency and yield, and strongly limits medical applications. Here we develop a simple, animal-free protocol for neural conversion of both hESCs and hiPSCs in adherent culture conditions...
February 18, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28210976/regenerative-medicine-for-parkinson-s-disease-using-differentiated-nerve-cells-derived-from-human-buccal-fat-pad-stem-cells
#9
Haruka Takahashi, Hiroshi Ishikawa, Akira Tanaka
The purpose of this study was to evaluate the utility of human adipose stem cells derived from the buccal fat pad (hBFP-ASCs) for nerve regeneration. Parkinson's disease (PD) is a neurodegenerative disorder characterized by progressive death of dopaminergic neurons. PD is a candidate disease for cell replacement therapy because it has no fundamental therapeutic methods. We examined the properties of neural-related cells induced from hBFP-ASCs as a cell source for PD treatment. hBFP-ASCs were cultured in neurogenic differentiation medium for about 2 weeks...
February 16, 2017: Human Cell
https://www.readbyqxmd.com/read/28210629/cellular-mechanisms-of-liver-regeneration-and-cell-based-therapies-of-liver-diseases
#10
REVIEW
Irina V Kholodenko, Konstantin N Yarygin
The emerging field of regenerative medicine offers innovative methods of cell therapy and tissue/organ engineering as a novel approach to liver disease treatment. The ultimate scientific foundation of both cell therapy of liver diseases and liver tissue and organ engineering is delivered by the in-depth studies of the cellular and molecular mechanisms of liver regeneration. The cellular mechanisms of the homeostatic and injury-induced liver regeneration are unique. Restoration of the mass of liver parenchyma is achieved by compensatory hypertrophy and hyperplasia of the differentiated parenchymal cells, hepatocytes, while expansion and differentiation of the resident stem/progenitor cells play a minor or negligible role...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28207079/the-growing-threat-of-antimicrobial-resistance
#11
Jose M Munita, Samuel Shelburne, David E Greenberg, Cesar A Arias
The emergence and widespread dissemination of multidrug-resistant organisms is considered one of the three most important public health threats for humankind in the 21st century and jeopardizes the practice of modern medicine. Failure to tackle this problem in a comprehensive fashion could result in a dire post-antibiotic era, impairing the future development of treatments against important diseases, such as cancer, and transplant medicine, among others. Here, we provide a global perspective of the problem and describe some of the most important antibiotic-resistant organisms affecting the health of our patients...
February 1, 2017: Texas Medicine
https://www.readbyqxmd.com/read/28205555/rapid-differentiation-of-human-pluripotent-stem-cells-into-functional-neurons-by-mrnas-encoding-transcription-factors
#12
Sravan Kumar Goparaju, Kazuhisa Kohda, Keiji Ibata, Atsumi Soma, Yukhi Nakatake, Tomohiko Akiyama, Shunichi Wakabayashi, Misako Matsushita, Miki Sakota, Hiromi Kimura, Michisuke Yuzaki, Shigeru B H Ko, Minoru S H Ko
Efficient differentiation of human pluripotent stem cells (hPSCs) into neurons is paramount for disease modeling, drug screening, and cell transplantation therapy in regenerative medicine. In this manuscript, we report the capability of five transcription factors (TFs) toward this aim: NEUROG1, NEUROG2, NEUROG3, NEUROD1, and NEUROD2. In contrast to previous methods that have shortcomings in their speed and efficiency, a cocktail of these TFs as synthetic mRNAs can differentiate hPSCs into neurons in 7 days, judged by calcium imaging and electrophysiology...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28205428/systemically-infused-mesenchymal-stem-cells-show-different-homing-profiles-in-healthy-and-tumor-mouse-models
#13
Chengying Xie, Zhangru Yang, Yuanzhen Suo, Qianqian Chen, Dan Wei, Xiaofu Weng, Zhengqin Gu, Xunbin Wei
Bone marrow-derived mesenchymal stem cells (MSCs) can localize in injured, inflamed, and cancerous tissues after systemic infusion. However, the dynamic homing profile of MSCs in the peripheral blood is not well characterized. Here, using in vivo flow cytometry to noninvasively monitor the dynamics of fluorescence-labeled cells, we found different clearance kinetics of systemically infused MSCs between healthy and tumor mouse models. The circulation times of MSCs in healthy mice and mice with subcutaneous tumors, orthotopically transplanted liver tumors, or metastatic lung tumors were 30, 24, 18, and 12 hours, respectively, suggesting that MSCs actively home to tumor environments...
February 16, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28205406/potency-of-human-cardiosphere-derived-cells-from-patients-with-ischemic-heart-disease-is-associated-with-robust-vascular-supportive-ability
#14
Emma Harvey, Huajun Zhang, Pilar Sepúlveda, Sara P Garcia, Dominic Sweeney, Fizzah A Choudry, Delia Castellano, George N Thomas, Hassan Kattach, Romina Petersen, Derek J Blake, David P Taggart, Mattia Frontini, Suzanne M Watt, Enca Martin-Rendon
Cardiosphere-derived cell (CDC) infusion into damaged myocardium has shown some reparative effect; this could be improved by better selection of patients and cell subtype. CDCs isolated from patients with ischemic heart disease are able to support vessel formation in vitro but this ability varies between patients. The primary aim of our study was to investigate whether the vascular supportive function of CDCs impacts on their therapeutic potential, with the goal of improving patient stratification. A subgroup of patients produced CDCs which did not efficiently support vessel formation (poor supporter CDCs), had reduced levels of proliferation and increased senescence, despite them being isolated in the same manner and having a similar immunophenotype to CDCs able to support vessel formation...
February 16, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28204931/postero-inferior-pedicle-surgical-technique-for-the-treatment-of-grade-iii-gynecomastia
#15
Sophie Thiénot, Nicolas Bertheuil, Raphaël Carloni, Cécile Méal, Sylvie Aillet, Christian Herlin, Eric Watier
INTRODUCTION: Surgical treatment of Grade III gynecomastia generally utilizes mastectomy techniques and free transplantation of the nipple-areola complex. Moreover, with rising obesity rates and the development of bariatric surgery, an increasing demand for correctional surgery for pseudogynecomastia has been observed, which is comparable to Grade III gynecomastia in terms of its surgical management. Here, we describe an innovative technique to deal with these new demands: fascio-cutaneous flap by postero-inferior pedicle...
February 15, 2017: Aesthetic Plastic Surgery
https://www.readbyqxmd.com/read/28199785/assessment-of-tocilizumab-anti-il-6-receptor-monoclonal-as-a-potential-treatment-for-chronic-antibody-mediated-rejection-and-transplant-glomerulopathy-in-hla-sensitized-renal-allograft-recipients
#16
Jua Choi, Olivier Aubert, Ashley Vo, Alexandre Loupy, Mark Haas, Dechu Puliyanda, Irene Kim, Sabrina Louie, Alexis Kang, Alice Peng, Joe Kahwaji, Nancy Reinsmoen, Mieko Toyoda, Stanley C Jordan
Extending the functional integrity of renal allografts is the primary goal of transplant medicine. Development of donor-specific antibodies (DSAs) post-transplant leads to chronic active antibody-mediated rejection (cABMR) and transplant glomerulopathy (TG), resulting in the majority of graft losses in the U.S. This reduces the quality & length of life for patients and increases cost. There are no approved treatments for cABMR. Evidence suggests the pro-inflammatory cytokine interleukin 6 (IL-6) may play an important role in DSA generation and cABMR...
February 15, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28199003/applications-of-induced-pluripotent-stem-cell-technologies-in-spinal-cord-injury
#17
REVIEW
Narihito Nagoshi, Hideyuki Okano
Numerous basic research studies have suggested the potential efficacy of neural precursor cell (NPC) transplantation in spinal cord injury (SCI). However, in most such studies the origin of the cells used was mainly fetal tissue or embryonic stem cells, both of which carry potential ethical concerns with respect to clinical use. The development of induced pluripotent stem cells (iPSCs) opened a new path toward regenerative medicine for SCI. iPSCs can be generated from somatic cells by induction of transcription factors, and induced to differentiate into NPCs with characteristics of cells of the central nervous system...
February 15, 2017: Journal of Neurochemistry
https://www.readbyqxmd.com/read/28198124/long-distance-axonal-growth-and-protracted-functional-maturation-of-neurons-derived-from-human-induced-pluripotent-stem-cells-after-intracerebral-transplantation
#18
Jonathan C Niclis, Christopher Turner, Jennifer Durnall, Stuart McDougal, Jessica A Kauhausen, Bryan Leaw, Mirella Dottori, Clare L Parish, Lachlan H Thompson
The capacity for induced pluripotent stem (iPS) cells to be differentiated into a wide range of neural cell types makes them an attractive donor source for autologous neural transplantation therapies aimed at brain repair. Translation to the in vivo setting has been difficult, however, with mixed results in a wide variety of preclinical models of brain injury and limited information on the basic in vivo properties of neural grafts generated from human iPS cells. Here we have generated a human iPS cell line constitutively expressing green fluorescent protein as a basis to identify and characterize grafts resulting from transplantation of neural progenitors into the adult rat brain...
February 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28196062/elemene-induces-apoptosis-of-human-gastric-cancer-cell-line-bgc-823-via-extracellular-signal-regulated-kinase-erk-1-2-signaling-pathway
#19
Pihong Li, Xiang Zhou, Weijian Sun, Weiwei Sheng, Yangyang Tu, Yaojun Yu, Jianda Dong, Bing Ye, Zhiqiang Zheng, Mingdong Lu
BACKGROUND Elemene is extracted from a traditional herbal medicine and is commonly used in the treatment of cancer in China. However, its effect on gastric cancer cells remains unknown. The goal of this study was to investigate its effect on human gastric cancer cells. MATERIAL AND METHODS Human gastric cancer BGC-823 cells and a tumor-bearing mouse model were employed to be divided into 4 groups: control group, elemene group, PD98059 group (an ERK 1/2 signaling pathway inhibitor), and the combined group (elemene plus PD98059)...
February 14, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28194057/clinical-characteristics-and-prognosis-of-167-cases-of-acute-erythroleukemia
#20
Zhi-Qiang Ma, Ji-Hong Pan, Da-Xin Jing, Chong-Yan Xu
To observe the biological characteristic and the prognoses in patients with acute erythroleukemia (AEL). The results of 167 patients with newly diagnosed AEL, from January 2004 and June 2014 in the department of Hematology, Shandong Province Chinese Medicine Hospital, were reviewed by morphology, immunology, cytogenetics, molecular biology. Flow cytometry analysis indicated that CD13 (96.1 %), CD33 (95.1 %), CD117 (87.4 %) and CD34 (79.4 %) were highly expressed in AEL. 56 of 148 (37.8 %) AEL patients had a variety of cytogenetic abnormalities, 27 of 148 (18...
March 2017: Indian Journal of Hematology & Blood Transfusion
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