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SCI, Immunity

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https://www.readbyqxmd.com/read/28223917/gene-expression-profiling-in-the-injured-spinal-cord-of-trachemys-scripta-elegans-an-amniote-with-self-repair-capabilities
#1
Adrián Valentin-Kahan, Gabriela B García-Tejedor, Carlos Robello, Omar Trujillo-Cenóz, Raúl E Russo, Fernando Alvarez-Valin
Slider turtles are the only known amniotes with self-repair mechanisms of the spinal cord that lead to substantial functional recovery. Their strategic phylogenetic position makes them a relevant model to investigate the peculiar genetic programs that allow anatomical reconnection in some vertebrate groups but are absent in others. Here, we analyze the gene expression profile of the response to spinal cord injury (SCI) in the turtle Trachemys scripta elegans. We found that this response comprises more than 1000 genes affecting diverse functions: reaction to ischemic insult, extracellular matrix re-organization, cell proliferation and death, immune response, and inflammation...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28201982/transcriptome-profile-of-rat-genes-in-injured-spinal-cord-at-different-stages-by-rna-sequencing
#2
Ling-Ling Shi, Nan Zhang, Xiu-Mei Xie, Yue-Juan Chen, Rui Wang, Lin Shen, Jian-Sheng Zhou, Jian-Guo Hu, He-Zuo Lü
BACKGROUND: Spinal cord injury (SCI) results in fatal damage and currently has no effective treatment. The pathological mechanisms of SCI remain unclear. In this study, genome-wide transcriptional profiling of spinal cord samples from injured rats at different time points after SCI was performed by RNA-Sequencing (RNA-Seq). The transcriptomes were systematically characterized to identify the critical genes and pathways that are involved in SCI pathology. RESULTS: RNA-Seq results were obtained from total RNA harvested from the spinal cords of sham control rats and rats in the acute, subacute, and chronic phases of SCI (1 day, 6 days and 28 days after injury, respectively; n = 3 in every group)...
February 15, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28170444/impaired-toll-like-receptor-7-and-9-induced-immune-activation-in-chronic-spinal-cord-injured-patients-contributes-to-immune-dysfunction
#3
Gozde Gucluler, Emre Adiguzel, Bilgi Gungor, Tamer Kahraman, Mayda Gursel, Bilge Yilmaz, Ihsan Gursel
Reduced immune activation or immunosuppression is seen in patients withneurological diseases. Urinary and respiratory infections mainly manifested as septicemia and pneumonia are the most frequent complications following spinal cord injuries and they account for the majority of deaths. The underlying reason of these losses is believed to arise due to impaired immune responses to pathogens. Here, we hypothesized that susceptibility to infections of chronic spinal cord injured (SCI) patients might be due to impairment in recognition of pathogen associated molecular patterns and subsequently declining innate and adaptive immune responses that lead to immune dysfunction...
2017: PloS One
https://www.readbyqxmd.com/read/28123490/reduced-inflammatory-cell-recruitment-and-tissue-damage-in-spinal-cord-injury-by-acellular-spinal-cord-scaffold-seeded-with-mesenchymal-stem-cells
#4
Yu-Hai Wang, Jian Chen, Jing Zhou, Feng Nong, Jin-Han Lv, Jia Liu
Therapy using acellular spinal cord (ASC) scaffolds seeded with bone marrow stromal cells (BMSCs) has previously been shown to restore function of the damaged spinal cord and improve functional recovery in a rat model of acute hemisected spinal cord injury (SCI). The aim of the present study was to determine whether BMSCs and ASC scaffolds promote the functional recovery of the damaged spinal cord in a rat SCI model through regulation of apoptosis and immune responses. Whether this strategy regulates secondary inflammation, which is characterized by the infiltration of immune cells and inflammatory mediators to the lesion site, in SCI repair was investigated...
January 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28123029/newly-formed-endothelial-cells-regulate-myeloid-cell-activity-following-spinal-cord-injury-via-expression-of-cd200-ligand
#5
Merav Cohen, Hila Ben-Yehuda, Ziv Porat, Catarina Raposo, Siamon Gordon, Michal Schwartz
: The central nervous system (CNS) is endowed with several immune-related mechanisms that contribute to its protection and maintenance in homeostasis and under pathology. Here, we discovered an additional mechanism that controls inflammatory responses within the CNS milieu under injurious conditions, involving CD200 ligand (CD200L) expressed by newly formed endothelial cells. We observed that CD200L is constitutively expressed in the mouse healthy CNS by endothelial cells of the blood-cerebrospinal fluid barrier and of the spinal cord meninges, but not by the endothelium of the blood-spinal cord barrier...
January 25, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28077367/electroacupuncture-alleviates-the-inflammatory-response-via-effects-on-m1-and-m2-macrophages-after-spinal-cord-injury
#6
Jiagui Zhao, Rongyi Zhang, Likui Wang, Yuanhai Li
BACKGROUND: Macrophages/microglia are important effector cells at the site of spinal cord injury (SCI). M1-type macrophages facilitate innate immunity to remove foreign microbes and wound debris from the injury site. M2-type macrophages exhibit tissue repair properties and attenuate production of pro-inflammatory cytokines. Regulation of the polarisation of M1/M2 macrophages may affect the inflammatory response in SCI and may be related to neurotrophin-3 (NT-3). Electroacupuncture (EA) at GV acupuncture points can be used as an adjuvant therapy for SCI...
January 11, 2017: Acupuncture in Medicine: Journal of the British Medical Acupuncture Society
https://www.readbyqxmd.com/read/28056790/immunization-with-neural-derived-peptides-plus-scar-removal-induces-a-permissive-microenvironment-and-improves-locomotor-recovery-after-chronic-spinal-cord-injury
#7
Roxana Rodríguez-Barrera, Adrián Flores-Romero, Ana María Fernández-Presas, Elisa García-Vences, Raúl Silva-García, Mina Konigsberg, Liliana Blancas-Espinoza, Vinnitsa Buzoianu-Anguiano, Karla Soria-Zavala, Paola Suárez-Meade, Antonio Ibarra
BACKGROUND: Immunization with neural derived peptides (INDP) as well as scar removal-separately-have shown to induce morphological and functional improvement after spinal cord injury (SCI). In the present study, we compared the effect of INDP alone versus INDP with scar removal on motor recovery, regeneration-associated and cytokine gene expression, and axonal regeneration after chronic SCI. Scar removal was conducted through a single incision with a double-bladed scalpel along the stump, and scar renewal was halted by adding α,α'-dipyridyl...
January 5, 2017: BMC Neuroscience
https://www.readbyqxmd.com/read/28039398/spinal-cord-injury-modulates-the-lung-inflammatory-response-in-mechanically-ventilated-rats-a-comparative-animal-study
#8
Karine Truflandier, Eric Beaumont, Karim Maghni, Michel De Marchie, Emmanuel Charbonney, Jadranka Spahija
Mechanical ventilation (MV) is widely used in spinal injury patients to compensate for respiratory muscle failure. MV is known to induce lung inflammation, while spinal cord injury (SCI) is known to contribute to local inflammatory response. Interaction between MV and SCI was evaluated in order to assess the impact it may have on the pulmonary inflammatory profile. Sprague Dawley rats were anesthetized for 24 h and randomized to receive either MV or not. The MV group included C4-C5 SCI, T10 SCI and uninjured animals...
December 2016: Physiological Reports
https://www.readbyqxmd.com/read/28025434/il-1%C3%AE-tnf-%C3%AE-and-il-6-levels-in-gingival-fluid-and-serum-of-patients-with-ischemic-stroke
#9
Anna Wytrykowska, Maria Prosba-Mackiewicz, Walenty M Nyka
It has been documented that an increase of immune cells in periodontitis may stimulate the process of atherosclerosis and lead to ischemic stroke. The aim of this study was to investigate whether there is any significant difference in serum and gingival crevicular fluid (GCF) cytokine concentrations between patients with early ischemic stroke (IS) and a control group. Eighty-six patients were consecutively enrolled for this study, 50 with ischemic stroke and 36 as a control group with no previous stroke. Only dentulous patients were included...
2016: Journal of Oral Science
https://www.readbyqxmd.com/read/28003635/effects-of-stat3-inhibitors-on-neural-functional-recovery-after-spinal-cord-injury-in-rats
#10
Meng Cui, Xinlong Ma, Jie Sun, Jinquan He, Lin Shen, Fangguo Li
Spinal cord injuries (SCIs) can induce primary and secondary injury, resulting in severe neurological damage and dysfunction in patients. Studies have reported that signal transducer and activator of transcription 3 (STAT3) plays an important role in the inflammatory immune response and neural stem cell differentiation. In order to examine whether a STAT3 inhibitor can prevent worsening of an SCI and promote neural stem cell differentiation, a rat model of surgically induced SCI was created and rats were treated with the STAT3 inhibitor S31-201...
January 16, 2017: Bioscience Trends
https://www.readbyqxmd.com/read/27994070/characterization-of-meningeal-type-2-innate-lymphocytes-and-their-response-to-cns-injury
#11
Sachin P Gadani, Igor Smirnov, Ashtyn T Smith, Christopher C Overall, Jonathan Kipnis
The meningeal space is occupied by a diverse repertoire of immune cells. Central nervous system (CNS) injury elicits a rapid immune response that affects neuronal survival and recovery, but the role of meningeal inflammation remains poorly understood. Here, we describe type 2 innate lymphocytes (ILC2s) as a novel cell type resident in the healthy meninges that are activated after CNS injury. ILC2s are present throughout the naive mouse meninges, though are concentrated around the dural sinuses, and have a unique transcriptional profile...
February 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27994015/newly-formed-endothelial-cells-regulate-myeloid-cell-activity-following-spinal-cord-injury-via-expression-of-cd200-ligand
#12
Merav Cohen, Hila Ben-Yehuda, Ziv Porat, Catarina Raposo, Siamon Gordon, Michal Schwartz
: The central nervous system (CNS) is endowed with several immune-related mechanisms that contribute to its protection and maintenance in homeostasis and under pathology. Here, we discovered an additional mechanism that controls inflammatory responses within the CNS milieu under injurious conditions, involving CD200 ligand (CD200L) expressed by newly-formed endothelial cells. We observed that CD200L is constitutively expressed in the mouse healthy CNS by endothelial cells of the blood-cerebrospinal fluid barrier and of the spinal cord meninges, but not by the endothelium of the blood-spinal cord barrier...
December 19, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27987156/immunotherapy-of-uveal-melanoma-vaccination-against-cancer
#13
Mirko Kummer, Beatrice Schuler-Thurner
Uveal melanoma is the most frequently occurring primary intraocular tumor in adults, with an incidence of about 5 out of 100,000 per year, the incidence rising with increasing age (Lipski, Klin Monbl Augenheilkd 230:1005-1019, 2013; Metz et al., Klin Monbl Augenheilkd 230:686-691, 2013; Singh and Topham, Ophthalmology 110:956-961, 2003). Often diagnosed late due to a lack of early symptoms, this kind of melanoma is associated with a poor prognosis. Approximately 50 % of the patients develop distant metastases (Lipski, Klin Monbl Augenheilkd 230:1005-1019, 2013; Metz et al...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27957787/macrophage-polarization-a-key-event-in-the-secondary-phase-of-acute-spinal-cord-injury
#14
Xiangyi Kong, Jun Gao
Acute spinal cord injury (SCI) has become epidemic in modern society. Despite advances made in the understanding of the pathogenesis and improvements in early recognition and treatment, it remains a devastating event, often producing severe and permanent disability. SCI has two phases: acute and secondary. Although the acute phase is marked by severe local and systemic events such as tissue contusion, ischaemia, haemorrhage and vascular damage, the outcome of SCI are mainly influenced by the secondary phase...
December 13, 2016: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/27924525/a-three-day-consecutive-fingolimod-administration-improves-neurological-functions-and-modulates-multiple-immune-responses-of-cci-mice
#15
Chuang Gao, Yu Qian, Jinhao Huang, Dong Wang, Wanqiang Su, Peng Wang, Linyue Guo, Wei Quan, Shuo An, Jianning Zhang, Rongcai Jiang
Excessive inflammation after traumatic brain injury (TBI) is a major cause of secondary TBI. Though several inflammatory biomarkers have been postulated as the risk factors of TBI, there has not been any comprehensive description of them. Fingolimod, a new kind of immunomodulatory agent which can diminish various kinds of inflammatory responses, has shown additional therapeutic effects in the treatment of intracranial cerebral hematoma (ICH), ischemia, spinal cord injury (SCI), and many other CNS disorders...
December 6, 2016: Molecular Neurobiology
https://www.readbyqxmd.com/read/27896143/new-avenues-for-reducing-intensive-care-needs-in-patients-with-chronic-spinal-cord-injury
#16
EDITORIAL
Pierre A Guertin
Relatively soon after their accident, patients suffering a spinal cord injury (SCI) begin generally experiencing the development of significant, often life-threatening secondary complications. Many of which are associated with chronic physical inactivity-related immune function problems and increasing susceptibility to infection that repeatedly requires intensive care treatment. Therapies capable of repairing the spinal cord or restoring ambulation would normally prevent many of these problems but, as of now, there is no cure for SCI...
November 4, 2016: World Journal of Critical Care Medicine
https://www.readbyqxmd.com/read/27810921/gut-dysbiosis-impairs-recovery-after-spinal-cord-injury
#17
Kristina A Kigerl, Jodie C E Hall, Lingling Wang, Xiaokui Mo, Zhongtang Yu, Phillip G Popovich
The trillions of microbes that exist in the gastrointestinal tract have emerged as pivotal regulators of mammalian development and physiology. Disruption of this gut microbiome, a process known as dysbiosis, causes or exacerbates various diseases, but whether gut dysbiosis affects recovery of neurological function or lesion pathology after traumatic spinal cord injury (SCI) is unknown. Data in this study show that SCI increases intestinal permeability and bacterial translocation from the gut. These changes are associated with immune cell activation in gut-associated lymphoid tissues (GALTs) and significant changes in the composition of both major and minor gut bacterial taxa...
November 14, 2016: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/27775474/characterization-of-the-antibody-response-after-cervical-spinal-cord-injury
#18
Antigona Ulndreaj, Apostolia Tzekou, Andrea J Mothe, Ahad M Siddiqui, Rachel Dragas, Charles H Tator, Emina E Torlakovic, Michael G Fehlings
The immune system plays a critical and complex role in the pathobiology of spinal cord injury (SCI), exerting both beneficial and detrimental effects. Increasing evidence suggests that there are injury level-dependent differences in the immune response to SCI. Patients with traumatic SCI have elevated levels of circulating autoantibodies against components of the central nervous system, but the role of these antibodies in SCI outcomes remains unknown. In rodent models of mid-thoracic SCI, antibody-mediated autoimmunity appears to be detrimental to recovery...
December 21, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27750479/changes-in-gene-expression-and-metabolism-in-the-testes-of-the-rat-following-spinal-cord-injury
#19
Ryan D Fortune, Raymond J Grill, Christine Beeton, Mark Tanner, Redwan Huq, David S Loose
Spinal cord injury (SCI) results in devastating changes to almost all aspects of a patient's life. In addition to a permanent loss of sensory and motor function, males also will frequently exhibit a profound loss of fertility through poorly understood mechanisms. We demonstrate that SCI causes measureable pathology in the testis both acutely (24 h) and chronically up to 1.5 years post-injury, leading to loss in sperm motility and viability. SCI has been shown in humans and rats to induce leukocytospermia, with the presence of inflammatory cytokines, anti-sperm antibodies, and reactive oxygen species found within the ejaculate...
December 2, 2016: Journal of Neurotrauma
https://www.readbyqxmd.com/read/27739045/modeling-proteolytically-driven-tumor-lymphangiogenesis
#20
Georgios Lolas, Lasse Jensen, George C Bourantas, Vasiliki Tsikourkitoudi, Konstantinos Syrigos
With the exception of a limited number of sites in the body, primary tumors infrequently lead to the demise of cancer patients. Instead, mortality and a significant degree of morbidity result from the growth of secondary tumors in distant organs. Tumor survival, growth and dissemination are associated with the formation of both new blood vessels (angiogenesis) and new lymph vessels (lymphagenesis or lymphangiogenesis). Although intensive research in tumor angiogenesis has been going on for the past four decades, experimental results in tumor lymphangiogenesis began to appear only in the last 10 years...
2016: Advances in Experimental Medicine and Biology
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