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Registros recuperados: 8
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Combating oncogene activation associated with retrovirus-mediated gene therapy of X-linked severe combined immunodeficiency BJMBR
Strauss,B.E.; Costanzi-Strauss,E..
A successful gene therapy clinical trial that also encountered serious adverse effects has sparked extensive study and debate about the future directions for retrovirus-mediated interventions. Treatment of X-linked severe combined immunodeficiency with an oncoretrovirus harboring a normal copy of the gc gene was applied in two clinical trials, essentially curing 13 of 16 infants, restoring a normal immune system without the need for additional immune-related therapies. Approximately 3 years after their gene therapy, tragically, 3 of these children, all from the same trial, developed leukemia as a result of this experimental treatment. The current understanding of the mechanism behind this leukemogenesis involves three critical and cooperating factors,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Retrovirus; Insertional mutagenesis; Severe combined immune deficiency; Gene therapy; Adverse event; Clinical trial.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000500002
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Inflammatory biomarkers responses after acute whole body vibration in fibromyalgia BJMBR
Ribeiro,V.G.C.; Mendonça,V.A.; Souza,A.L.C.; Fonseca,S.F.; Camargos,A.C.R.; Lage,V.K.S.; Neves,C.D.C.; Santos,J.M.; Teixeira,L.A.C.; Vieira,E.L.M.; Teixeira Junior,A.L.; Mezêncio,B.; Fernandes,J.S.C.; Leite,H.R.; Poortmans,J.R.; Lacerda,A.C.R..
The aims of this study were 1) to characterize the intensity of the vibration stimulation in women diagnosed with fibromyalgia (FM) compared to a control group of healthy women (HW) matched by age and anthropometric parameters, and 2) to investigate the effect of a single session of whole body vibration (WBV) on inflammatory responses. Levels of adipokines, soluble tumor necrosis factor receptors (sTNFr1, sTNFr2), and brain-derived neurotrophic factor (BDNF) were determined by enzyme-linked immunosorbent assay. Oxygen consumption (VO2) was estimated by a portable gas analysis system, heart rate (HR) was measured using a HR monitor, and perceived exertion (RPE) was evaluated using the Borg scale of perceived exertion. Acutely mild WBV increased VO2 and HR...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biomarkers; Fibromyalgia; Clinical trial; Inflammation; Acute exercise.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2018000400615
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Schwann cells for spinal cord repair BJMBR
Oudega,M.; Moon,L.D.F.; de Almeida Leme,R.J..
The complex nature of spinal cord injury appears to demand a multifactorial repair strategy. One of the components that will likely be included is an implant that will fill the area of lost nervous tissue and provide a growth substrate for injured axons. Here we will discuss the role of Schwann cells (SCs) in cell-based, surgical repair strategies of the injured adult spinal cord. We will review key studies that showed that intraspinal SC grafts limit injury-induced tissue loss and promote axonal regeneration and myelination, and that this response can be improved by adding neurotrophic factors or anti-inflammatory agents. These results will be compared with several other approaches to the repair of the spinal cord. A general concern with repair strategies...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Spinal cord injury; Implantation; Regeneration; Neurotrophic factors; Clinical trial; Rehabilitation; Gene profiling.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000600003
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A randomized, double-blind, and placebo-controlled study with tranexamic acid of bleeding and fibrinolytic activity after primary coronary artery bypass grafting BJMBR
Santos,A.T.L.; Kalil,R.A.K.; Bauemann,C.; Pereira,J.B.; Nesralla,I.A..
Cardiopulmonary bypass is frequently associated with excessive blood loss. Platelet dysfunction is the main cause of non-surgical bleeding after open-heart surgery. We randomized 65 patients in a double-blind fashion to receive tranexamic acid or placebo in order to determine whether antifibrinolytic therapy reduces chest tube drainage. The tranexamic acid group received an intravenous loading dose of 10 mg/kg, before the skin incision, followed by a continuous infusion of 1 mg kg-1 h-1 for 5 h. The placebo group received a bolus of normal saline solution and continuous infusion of normal saline for 5 h. Postoperative bleeding and fibrinolytic activity were assessed. Hematologic data, convulsive seizures, allogeneic transfusion, occurrence of myocardial...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tranexamic acid; Coronary artery bypass; Postoperative bleeding; Clinical trial.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000100007
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Exploratory calcineurin inhibitor-free regimens in living-related kidney transplant recipients BJMBR
Garcia,R.; Machado,P.G.; Felipe,C.R.; Park,S.I.; Spinelli,G.A.; Franco,M.F.; Tedesco-Silva Jr.,H.; Medina-Pestana,J.O..
Chronic allograft nephropathy is among the major causes of graft loss even in low-risk kidney transplant recipients and correlates with acute nephrotoxic events during the first year post-transplant. Therefore, calcineurin inhibitor-free regimens may improve patient and graft survival among recipients of living-related kidney transplants. To confirm this hypothesis, we evaluated the efficacy and safety of two calcineurin inhibitor-free regimens in 92 low-risk recipients of one-haplotype living-related kidney transplants. Immunosuppression consisted of tacrolimus, azathioprine and prednisone (group I, GI, N = 38), 2 doses of daclizumab, mycophenolate mofetil (MMF), and prednisone (GII, N = 33) and 2 doses of daclizumab, MMF, sirolimus and prednisone (GIII,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tacrolimus; Mycophenolate mofetil; Sirolimus; Kidney transplantation; Acute rejection; Clinical trial.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2007000400003
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Bone morphogenetic proteins: from structure to clinical use BJMBR
Granjeiro,J.M.; Oliveira,R.C.; Bustos-Valenzuela,J.C.; Sogayar,M.C.; Taga,R..
Bone morphogenetic proteins (BMPs) are multi-functional growth factors belonging to the transforming growth factor ß superfamily. Family members are expressed during limb development, endochondral ossification, early fracture, and cartilage repair. The activity of BMPs was first identified in the 1960s but the proteins responsible for bone induction were unknown until the purification and cloning of human BMPs in the 1980s. To date, about 15 BMP family members have been identified and characterized. The signal triggered by BMPs is transduced through serine/threonine kinase receptors, type I and II subtypes. Three type I receptors have been shown to bind BMP ligands, namely: type IA and IB BMP receptors and type IA activin receptors. BMPs seem to be...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bone morphogenetic proteins; Osteogenic protein; Protein structure; Meta-analysis; Clinical trial.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005001000003
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Glutamate-N-methyl-D-aspartate receptor modulation and minocycline for the treatment of patients with schizophrenia: an update BJMBR
Chaves,C.; Marque,C.R.; Trzesniak,C.; Machado de Sousa,J.P.; Zuardi,A.W.; Crippa,J.A.S.; Dursun,S.M.; Hallak,J.E..
Growing consistent evidence indicates that hypofunction of N-methyl-D-aspartate (NMDA) transmission plays a pivotal role in the neuropathophysiology of schizophrenia. Hence, drugs which modulate NMDA neurotransmission are promising approaches to the treatment of schizophrenia. The aim of this article is to review clinical trials with novel compounds acting on the NMDA receptor (NMDA-R). This review also includes a discussion and translation of neuroscience into schizophrenia therapeutics. Although the precise mechanism of action of minocycline in the brain remains unclear, there is evidence that it blocks the neurotoxicity of NMDA antagonists and may exert a differential effect on NMDA signaling pathways. We, therefore, hypothesize that the effects of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Schizophrenia; NMDA agonist; Glycine; Glutamate; Clinical trial; Minocycline.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2009001100002
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Efficient retrovirus-mediated transfer of cell-cycle control genes to transformed cells BJMBR
Strauss,B.E.; Costanzi-Strauss,E..
The use of gene therapy continues to be a promising, yet elusive, alternative for the treatment of cancer. The origins of cancer must be well understood so that the therapeutic gene can be chosen with the highest chance of successful tumor regression. The gene delivery system must be tailored for optimum transfer of the therapeutic gene to the target tissue. In order to accomplish this, we study models of G1 cell-cycle control in both normal and transformed cells in order to understand the reasons for uncontrolled cellular proliferation. We then use this information to choose the gene to be delivered to the cells. We have chosen to study p16, p21, p53 and pRb gene transfer using the pCL-retrovirus. Described here are some general concepts and specific...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Gene therapy; Clinical trial; Retrovirus; Animal model; Cell cycle; Growth arrest.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X1999000700016
Registros recuperados: 8
Primeira ... 1 ... Última
 

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