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https://www.readbyqxmd.com/read/28447572/effects-of-bone-marrow-derived-msc-transplantation-on-functional-recovery-in-a-rat-model-of-spinal-cord-injury-comparisons-of-transplant-locations-and-cell-concentrations
#1
Jessica J Matyas, Andrew N Stewart, Allison Goldsmith, Zhenhong Nan, Reid L Skeel, Julien Rossignol, Gary L Dunbar
Spinal cord injury (SCI) is a widely disabling condition, constraining those affected by it to wheelchairs and requiring intense daily care and assistance. Cell replacement therapies, targeting regeneration of cells in the injured cord, are currently gaining momentum in the field of SCI research. Previous studies indicate that mesenchymal stem cells (MSCs) can reduce functional deficits through immunomodulation and production of trophic factors in a variety of neurological disorders. The present study assessed the efficacy of transplanted bone marrow-derived MSCs at different concentrations and locations for promoting functional recovery following SCI...
April 26, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/28363640/sphingosine-1-phosphate-prevents-egress-of-hematopoietic-stem-cells-from-liver-to-reduce-fibrosis
#2
Andrew King, Diarmaid D Houlihan, Dean Kavanagh, Debashis Haldar, Nguyet Luu, Andrew Owen, Shankar Suresh, Nwe Ni Than, Gary Reynolds, Jasmine Penny, Henry Sumption, Prakash Ramachandran, Neil C Henderson, Neena Kalia, Jon Frampton, David H Adams, Philip N Newsome
BACKGROUND & AIMS: There is growing interest in the use of bone marrow cells to treat liver fibrosis, however little is known about their anti-fibrotic efficacy or the identity of their effector cell(s). Sphingosine-1-phosphate (S1P) mediates egress of immune cells from the lymphoid organs into the lymphatic vessels; we investigated its role in the response of hematopoietic stem cells (HSC) to liver fibrosis in mice. METHODS: Purified (c-kit+/sca1+/lin-) hematopoietic stem cells (HSC) were repeatedly infused into mice undergoing fibrotic liver injury...
March 28, 2017: Gastroenterology
https://www.readbyqxmd.com/read/28363468/donor-mesenchymal-stem-cells-home-to-maternal-wounds-after-transamniotic-stem-cell-therapy-trascet-in-a-rodent-model
#3
Christopher D Graham, Hester F Shieh, Joseph A Brazzo, David Zurakowski, Dario O Fauza
PURPOSE: Transamniotic stem cell therapy (TRASCET) with amniotic fluid-derived MSCs (afMSCs) has emerged experimentally as a practical treatment strategy for congenital anomalies. In this study, we sought to determine whether afMSCs migrate to the mother following TRASCET. METHODS: Pregnant rat dams were divided into three groups. Two groups received volume-matched injections into all amniotic cavities of either a suspension of afMSCs labeled with a luciferase reporter gene or the luciferase protein alone...
March 18, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28363256/transplantation-of-amniotic-scaffold-seeded-mesenchymal-stem-cells-and-or-endothelial-progenitor-cells-from-bone-marrow-to-efficiently-repair-3-cm-circumferential-urethral-defect-in-model-dogs
#4
Chen Chen, Shuxin Zheng, Xinke Zhang, Pengxiu Dai, Yongping Gao, Liangliang Nan, Yihua Zhang
The treatment options for patients with a urethral defect are limited by the availability of autologous tissues. We hypothesized that transplantation of decellularized human amniotic scaffolds (dHAS) seeded with allogeneic bone marrow mesenchymal cells (BMSCs) and/or endothelial progenitor cells (EPCs) may serve as a promising repair strategy for long segment of circumferential urethral defect. To verify the hypothesis, with urinary catheterization, a 3-cm segment of whole urethra in 25 male mongrel dogs was excised and replaced by dHAS seeded with allogeneic BMSCs and/or EPCs...
March 31, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/28357176/novel-and-emerging-therapies-in-the-treatment-of-recessive-dystrophic-epidermolysis-bullosa
#5
REVIEW
Ellie Rashidghamat, John A McGrath
Epidermolysis bullosa (EB) is a clinically and genetically heterogeneous group of inherited blistering diseases that affects ∼ 500,000 people worldwide. Clinically, individuals with EB have fragile skin and are susceptible to blistering following minimal trauma, with mucous membrane and other organ involvement in some subtypes. Within the spectrum of EB, ∼ 5% of affected individuals have the clinically more severe recessive dystrophic (RDEB) variant with a prevalence of 8 per one million of the population...
February 2017: Intractable & Rare Diseases Research
https://www.readbyqxmd.com/read/28191770/stem-cell-based-tissue-engineered-laryngeal-replacement
#6
Tahera Ansari, Peggy Lange, Aaron Southgate, Karin Greco, Carla Carvalho, Leanne Partington, Anthony Bullock, Sheila MacNeil, Mark W Lowdell, Paul D Sibbons, Martin A Birchall
Patients with laryngeal disorders may have severe morbidity relating to swallowing, vocalization, and respiratory function, for which conventional therapies are suboptimal. A tissue-engineered approach would aim to restore the vocal folds and maintain respiratory function while limiting the extent of scarring in the regenerated tissue. Under Good Laboratory Practice conditions, we decellularized porcine larynges, using detergents and enzymes under negative pressure to produce an acellular scaffold comprising cartilage, muscle, and mucosa...
February 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28098485/effects-of-umbilical-cord-blood-stem-cells-on-healing-factors-for-diabetic-foot-injuries
#7
N Çil, E O Oğuz, E Mete, A Çetinkaya, G A Mete
The use of stem or progenitor cells from bone marrow, or peripheral or umbilical cord blood is becoming more common for treatment of diabetic foot problems. These cells promote neovascularization by angiogenic factors and they promote epithelium formation by stimulating cell replication and migration under certain pathological conditions. We investigated the role of CD34 + stem cells from human umbilical cord blood in wound healing using a rat model. Rats were randomly divided into a control group and two groups with diabetes induced by a single dose of 55 mg/kg intraperitoneal streptozocin...
2017: Biotechnic & Histochemistry: Official Publication of the Biological Stain Commission
https://www.readbyqxmd.com/read/27990393/subcutaneous-panniculitis-like-t-cell-lymphoma-with-macrophage-activation-syndrome-treated-by-cyclosporine-and-prednisolone
#8
Dinesh P Asati, Vaibhav Ingle, Deepti Joshi, Anurag Tiwari
Subcutaneous panniculitis-like T-cell lymphoma (SPTCL; α/β T-cell subtype) is a distinct variantof cutaneous T-cell lymphomas, which presents as inflammatory subcutaneous nodules. A 17-year-old male presented with recurrent fever with concomitant facial swelling, pedal edema, hepatosplenomegaly, and mildly tender subcutaneous plaques in generalized distribution along with patches of scarring alopecia on scalp. There were features of macrophage activation syndrome in the form of hemophagocytosis in the bone marrow, pancytopenia, high serum lactate dehydrogenase levels, low fibrinogen clotting activity, prolonged activated prothrombine time (aPTT), increased serum ferritin, hypoalbuminemia, and hypertriglyceridemia...
November 2016: Indian Dermatology Online Journal
https://www.readbyqxmd.com/read/27987777/synthesis-and-characterization-of-polycaprolactone-for-anterior-cruciate-ligament-regeneration
#9
Ayse Cansu Gurlek, Burcu Sevinc, Ece Bayrak, Cevat Erisken
Anterior cruciate ligament (ACL) is the most frequently torn ligament in the knee, and complete healing is unlikely due to lack of vascularization. Current approaches for the treatment of ACL injuries include surgical interventions and grafting, however recent reports show that surgeries have 94% recurrency, and that repaired tissues are biomechanically inferior to the native tissue. These necessitate the need for new strategies for scar-free repair/regeneration of ACL injuries. Polycaprolactone (PCL) is a biodegradable and biocompatible synthetic polymer, which has been widely used in the connective tissue repair/regeneration attempts...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27938489/a-comparative-study-of-three-different-types-of-stem-cells-for-treatment-of-rat-spinal-cord-injury
#10
COMPARATIVE STUDY
Jiri Ruzicka, Lucia Machova-Urdzikova, John Gillick, Takashi Amemori, Nataliya Romanyuk, Kristyna Karova, Kristyna Zaviskova, Jana Dubisova, Sarka Kubinova, Raj Murali, Eva Sykova, Meena Jhanwar-Uniyal, Pavla Jendelova
Three different sources of human stem cells-bone marrow-derived mesenchymal stem cells (BM-MSCs), neural progenitors (NPs) derived from immortalized spinal fetal cell line (SPC-01), and induced pluripotent stem cells (iPSCs)-were compared in the treatment of a balloon-induced spinal cord compression lesion in rats. One week after lesioning, the rats received either BM-MSCs (intrathecally) or NPs (SPC-01 cells or iPSC-NPs, both intraspinally), or saline. The rats were assessed for their locomotor skills (BBB, flat beam test, and rotarod)...
April 13, 2017: Cell Transplantation
https://www.readbyqxmd.com/read/27885959/bone-marrow-stromal-cell-sheets-may-promote-axonal-regeneration-and-functional-recovery-with-suppression-of-glial-scar-formation-after-spinal-cord-transection-injury-in-rats
#11
Akinori Okuda, Noriko Horii-Hayashi, Takayo Sasagawa, Takamasa Shimizu, Hideki Shigematsu, Eiichiro Iwata, Yasuhiko Morimoto, Keisuke Masuda, Munehisa Koizumi, Manabu Akahane, Mayumi Nishi, Yasuhito Tanaka
OBJECTIVE Transplantation of bone marrow stromal cells (BMSCs) is a theoretical potential as a therapeutic strategy in the treatment of spinal cord injury (SCI). Although a scaffold is sometimes used for retaining transplanted cells in damaged tissue, it is also known to induce redundant immunoreactions during the degradation processes. In this study, the authors prepared cell sheets made of BMSCs, which are transplantable without a scaffold, and investigated their effects on axonal regeneration, glial scar formation, and functional recovery in a completely transected SCI model in rats...
March 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/27865438/evaluation-of-bone-marrow-derived-mesenchymal-stem-cells-for-full-thickness-wound-healing-in-comparison-to-tissue-engineered-chitosan-scaffold-in-rabbit
#12
Mohammad Hossein Rajabian, Gholam Hossein Ghorabi, Bita Geramizadeh, Safoura Sameni, Maryam Ayatollahi
BACKGROUND: Chronic wounds present a major challenge in modern medicine. Even under optimal conditions, the healing process may lead to scarring and fibrosis. The ability of mesenchymal stem cells (MSCs) to differentiate into other cell types makes these cells an attractive therapeutic tool for cell transplantation. Both tissue-engineered construct and MSC therapy are among the current wound healing procedures and potential care. Chitosan has been widely applied in tissue engineering because of its biocompatibility and biodegradability...
February 2017: Tissue & Cell
https://www.readbyqxmd.com/read/27804974/mesenchymal-stem-cells-combined-with-hepatocyte-growth-factor-therapy-for-attenuating-ischaemic-myocardial-fibrosis-assessment-using-multimodal-molecular-imaging
#13
Huizhu Chen, Rui Xia, Zhenlin Li, Lizhi Zhang, Chunchao Xia, Hua Ai, Zhigang Yang, Yingkun Guo
Clinically, myocardial fibrosis is increasingly being recognized as a new therapeutic target for ischaemic heart diseases. The aim of this study was to investigate whether noninvasive multimodal molecular imaging could be used to dynamically assess whether the combination of bone marrow mesenchymal stem cells (BMSCs) and hepatocyte growth factor (HGF) therapy can synergistically attenuate myocardial fibrosis after myocardial infarction (MI). MI was induced in 28 rats by coronary ligation with subsequent injection of BMSCs/HGF, BMSCs, HGF, or saline into the border zone under echocardiography guidance...
November 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27637759/mesenchymal-stromal-cell-injection-promotes-vocal-fold-scar-repair-without-long-term-engraftment
#14
R S Bartlett, J T Guille, X Chen, M B Christensen, S F Wang, S L Thibeault
BACKGROUND: Regenerative medicine holds promise for restoring voice in patients with vocal fold scarring. As experimental treatments approach clinical translation, several considerations remain. Our objective was to evaluate efficacy and biocompatibility of four bone marrow mesenchymal stromal cell (BM-MSC) and tunable hyaluronic acid based hydrogel (HyStem-VF) treatments for vocal fold scar using clinically acceptable materials, a preclinical sample size and a dosing comparison. METHODS: Vocal folds of 84 rabbits were injured and injected with four treatment variations (BM-MSC, HyStem-VF, and BM-MSC in HyStem-VF at two concentrations) 6 weeks later...
October 2016: Cytotherapy
https://www.readbyqxmd.com/read/27630673/points-regarding-cell-transplantation-for-the-treatment-of-spinal-cord-injury
#15
REVIEW
Chizuka Ide, Kenji Kanekiyo
Transplantation of somatic cells, including bone marrow stromal cells (BMSCs), bone marrow mononuclear cells (BMNCs), and choroid plexus epithelial cells (CPECs), enhances the outgrowth of regenerating axons and promotes locomotor improvements. They are not integrated into the host spinal cord, but disappear within 2-3 weeks after transplantation. Regenerating axons extend at the spinal cord lesion through the astrocyte-devoid area that is filled with connective tissue matrices. Regenerating axons have characteristics of peripheral nerves: they are associated with Schwann cells, and embedded in connective tissue matrices...
July 2016: Neural Regeneration Research
https://www.readbyqxmd.com/read/27612519/stem-cell-based-tissue-engineered-laryngeal-replacement
#16
Tahera Ansari, Peggy Lange, Aaron Southgate, Karin Greco, Carla Carvalho, Leanne Partington, Anthony Bullock, Sheila MacNeil, Mark W Lowdell, Paul D Sibbons, Martin A Birchall
: Patients with laryngeal disorders may have severe morbidity relating to swallowing, vocalization, and respiratory function, for which conventional therapies are suboptimal. A tissue-engineered approach would aim to restore the vocal folds and maintain respiratory function while limiting the extent of scarring in the regenerated tissue. Under Good Laboratory Practice conditions, we decellularized porcine larynges, using detergents and enzymes under negative pressure to produce an acellular scaffold comprising cartilage, muscle, and mucosa...
September 9, 2016: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/27560658/immunomodulatory-capacity-of-the-local-mesenchymal-stem-cells-transplantation-after-severe-skeletal-muscle-injury-in-female-rats
#17
Mona A M Helal, Noura E M Shaheen, Fatma A Abu Zahra
CONTEXT: Cell therapy technique with stem cells is a very attractive strategy for the treatment of muscle disorders. OBJECTIVE: The objective of this study was to investigate the mechanism of local transplantation of mesenchymal stem cells (MSCs) which could contribute to skeletal muscle healing. MATERIALS AND METHODS: Female rats were divided into three equal groups as the following: group 1, the negative control group (untreated group), group 2, sham-treated group, rats with muscle injuries involving volumetric muscle loss (VML) of adductor brevis muscle and injected locally with phosphate-buffered saline (PBS) 0...
August 25, 2016: Immunopharmacology and Immunotoxicology
https://www.readbyqxmd.com/read/27543341/preconditioning-of-mesenchymal-stem-cells-with-2-4-dinitrophenol-improves-cardiac-function-in-infarcted-rats
#18
Irfan Khan, Anwar Ali, Muhammad Aleem Akhter, Nadia Naeem, Maqsood Ahmed Chotani, Tuba Mustafa, Asmat Salim
AIMS: The aim of this study is to determine if preconditioning of bone marrow derived mesenchymal stem cells (MSCs) with 2,4-dinitrophenol (DNP) improves survival of transplanted stem cells in a rat model of myocardial infarction (MI), and to asses if this strategy has measurable impact on cardiac function. MAIN METHODS: MSCs were preconditioned with DNP. In vitro cell adhesion assay and qRT-PCR were performed to analyze the expression of genes involved in cardiomyogenesis, cell adhesion and angiogenesis...
October 1, 2016: Life Sciences
https://www.readbyqxmd.com/read/27355149/long-term-outcome-of-intra-myocardial-injection-of-autologous-bone-marrow-mononuclear-cells-combined-with-isolated-coronary-artery-bypass-grafting-for-patients-with-chronic-ischemic-heart-failure
#19
Rong Wang, Lin Zhang, Yao Wang, Zhiyun Gong, Cangsong Xiao, Yang Wu, Chonglei Ren, Nan Cheng, Changqing Gao
OBJECTIVE: This study aimed to investigate whether intra-myocardial injection of autologous bone marrow mononuclear cells (aBMMNCs) into peri-scarred myocardium during coronary artery bypass grafting (CABG) improved the long-term outcome compared with CABG alone. METHODS: From April 2011 to December 2012, 33 patients with chronic ischemic heart failure were randomly assigned to undergo CABG (control group) or CABG combined with intra-myocardial injection of aBMMNCs (treatment group)...
2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/27341741/challenges-to-success-in-heart-failure-cardiac-cell-therapies-in-patients-with-heart-diseases
#20
Hidemasa Oh, Hiroshi Ito, Shunji Sano
Heart failure remains the leading cause of death worldwide, and is a burgeoning problem in public health due to the limited capacity of postnatal hearts to self-renew. The pathophysiological changes in injured hearts can sometimes be manifested as scar formation or myocardial degradation, rather than supplemental muscle regeneration to replenish lost tissue during the healing processes. Stem cell therapies have been investigated as a possible treatment approach for children and adults with potentially fatal cardiovascular disease that does not respond to current medical therapies...
June 21, 2016: Journal of Cardiology
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