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https://www.readbyqxmd.com/read/28098348/impact-of-lysosomal-storage-disorders-on-biology-of-mesenchymal-stem-cells-evidences-from-in-vitro-silencing-of-glucocerebrosidase-gba-and-alpha-galactosidase-a-gla-enzymes
#1
T Squillaro, I Antonucci, N Alessio, A Esposito, M Cipollaro, Mab Melone, G Peluso, L Stuppia, U Galderisi
Lysosomal storage disorders (LDS) comprise a group of rare multisystemic diseases resulting from inherited gene mutations that impair lysosomal homeostasis. The most common LSDs, Gaucher disease (GD) and Fabry disease (FD) are caused by deficiencies in the lysosomal glucocerebrosidase (GBA) and alpha-galactosidase A (GLA) enzymes, respectively. Given the systemic nature of enzyme deficiency, we hypothesized that the stem cell compartment of GD and FD patients might be also affected. Among stem cells, mesenchymal stem cells (MSCs) are a commonly investigated population given their role in hematopoiesis and the homeostatic maintenance of many organs and tissues...
January 18, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28092082/brain-barrier-breakdown-as-a-cause-and-consequence-of-neuroinflammation-in-sepsis
#2
REVIEW
Lucineia Gainski Danielski, Amanda Della Giustina, Marwa Badawy, Tatiana Barichello, João Quevedo, Felipe Dal-Pizzol, Fabrícia Petronilho
The blood-brain barrier (BBB) and the blood-cerebrospinal fluid barrier (BCSFB) are important for the maintenance of brain homeostasis. During sepsis, peripheral production of proinflammatory cytokines and reactive oxygen species are responsible for structural alterations in those brain barriers. Thus, an increasing permeability of these barriers can lead to the activation of glial cells such as microglia and the production of cytotoxic mediators which in turn act on the brain barriers, damaging them further...
January 14, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28088681/maintenance-effects-of-working-memory-intervention-cogmed-in-children-with-symptomatic-epilepsy
#3
Amanda Fuentes, Elizabeth N Kerr
PURPOSE: To extend previous research documenting the benefits of working memory (WM) intervention (Cogmed) immediately post-intervention in children with epilepsy by assessing the 3-month maintenance effects. METHODS: Participants involved in a previous randomized clinical trial (RCT) were invited to participate if they completed Cogmed within the last 3months (n=15) and additional participants (n=13) were prospectively recruited. Standardized assessments of near-transfer effects (i...
January 12, 2017: Epilepsy & Behavior: E&B
https://www.readbyqxmd.com/read/28081372/role-of-hyperplasia-of-gingival-lymphatics-in-periodontal-inflammation
#4
P Papadakou, A Bletsa, M A Yassin, T V Karlsen, H Wiig, E Berggreen
Lymphatic vessels are important for maintenance of tissue fluid homeostasis and afferent antigen transport. In chronic inflammation, lymphangiogenesis takes place and is characterized by lymphatic endothelial cell proliferation and lymphatic hyperplasia. Vascular endothelial growth factor C (VEGFC) is the main known lymphangiogenic growth factor, and its expression is increased in periodontitis, a common chronic infectious disease that results in tissue destruction and alveolar bone loss. The role of lymphangiogenesis during development of periodontitis is unknown...
December 1, 2016: Journal of Dental Research
https://www.readbyqxmd.com/read/28075157/visual-occlusion-during-minimally-invasive-surgery-a-contemporary-review-of-methods-to-reduce-laparoscopic-and-robotic-lens-fogging-and-other-sources-of-optical-loss
#5
Todd Galvin Manning, Marlon Perera, Daniel Christidis, Ned Kinnear, Shannon McGrath, Richard O'Beirne, Paul Zotov, Damien M Bolton, Nathan Lawrentschuk
Background Maintenance of optimal vision during minimally invasive surgery is crucial to maintaining operative awareness, efficiency and safety. Hampered vision is commonly caused by laparoscopic lens fogging (LLF) which has prompted the development of various anti-fogging fluids and warming devices. However, limited comparative evidence exists in contemporary literature. Despite technological advancements there remains no consensus as to superior methods to prevent LLF or restore visual acuity once LLF has occurred...
January 11, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28063042/murine-models-of-allergic-asthma
#6
Eline Haspeslagh, Nincy Debeuf, Hamida Hammad, Bart N Lambrecht
Allergic asthma is a heterogeneous inflammatory lung disease affecting millions of people worldwide and with a steadily increasing incidence. Mouse models have been of utmost importance in uncovering key inflammatory cell types, cytokines, and pathways in the development and maintenance of allergic asthma. Historically, the mainstay in experimental asthma research was sensitizing rodents to the model protein antigen ovalbumin (OVA) with the pro-Th2 adjuvant aluminum hydroxide, followed by repetitive OVA exposures to the airways to initiate a Th2-skewed adaptive immune response leading to eosinophilic airway inflammation and airway hyperreactivity (AHR)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28060951/hiv-infects-bronchial-epithelium-and-suppresses-components-of-the-mucociliary-clearance-apparatus
#7
S Chinnapaiyan, T Parira, R Dutta, M Agudelo, A Morris, M Nair, H J Unwalla
Recurrent lung infections and pneumonia are emerging as significant comorbidities in the HIV-infected population in the era of combination antiretroviral therapy (cART). HIV infection has been reported to suppress nasal mucociliary clearance (MCC). Since the primary components driving nasal MCC and bronchial MCC are identical, it is possible that bronchial MCC is affected as well. Effective MCC requires optimal ciliary beating which depends on the maintenance of the airway surface liquid (ASL), a function of cystic fibrosis transmembrane conductance regulator (CFTR) activity and the integrity of the signaling mechanism that regulates ciliary beating and fluid secretion...
2017: PloS One
https://www.readbyqxmd.com/read/28039439/hypothalamic-s1p-s1pr1-axis-controls-energy-homeostasis-in-middle-aged-rodents-the-reversal-effects-of-physical-exercise
#8
Vagner Ramon Rodrigues Silva, Carlos Kiyoshi Katashima, Carla G Bueno Silva, Luciene Lenhare, Thayana Oliveira Micheletti, Rafael Ludemann Camargo, Ana Carolina Ghezzi, Juliana Alves Camargo, Alexandre Moura Assis, Natalia Tobar, Joseane Morari, Daniela S Razolli, Leandro Pereira Moura, José Rodrigo Pauli, Dennys Esper Cintra, Lício Augusto Velloso, Mario J A Saad, Eduardo Rochete Ropelle
Recently, we demonstrated that the hypothalamic S1PR1/STAT3 axis plays a critical role in the control of food consumption and energy expenditure in rodents. Here, we found that reduction of hypothalamic S1PR1 expression occurs in an age-dependent manner, and was associated with defective thermogenic signaling and weight gain. To address the physiological relevance of these findings, we investigated the effects of chronic and acute exercise on the hypothalamic S1PR1/STAT3 axis. Chronic exercise increased S1PR1 expression and STAT3 phosphorylation in the hypothalamus, restoring the anorexigenic and thermogenic signals in middle-aged mice...
December 26, 2016: Aging
https://www.readbyqxmd.com/read/28017950/-effects-of-exercise-on-joints
#9
Hideki Moriyama
Joints are composed of several different tissues(cartilage, capsule, meniscus, and ligament), and articular cartilage plays an important role in maintaining mechanical competence during exercise. Weight-bearing exercise has several benefit, including improved blood and synovial fluid circulation in a given joint. Consistent moderate activities facilitate cycles of anabolism and catabolism. Mechanical stresses are crucial for the maintenance of the morphologic and functional integrity of articular cartilage...
2017: Clinical Calcium
https://www.readbyqxmd.com/read/28017684/increased-levels-of-cell-free-mitochondrial-dna-in-the-cerebrospinal-fluid-of-patients-with-multiple-sclerosis
#10
Kristin N Varhaug, Christian A Vedeler, Kjell-Morten Myhr, Jan Harald Aarseth, Charalampos Tzoulis, Laurence A Bindoff
Mitochondrial DNA (mtDNA) can act as damage-associated molecular pattern molecule (DAMP) and initiate an inflammatory response. We hypothesized that the concentration of mtDNA might reflect inflammatory activity in multiple sclerosis and investigated therefore levels of cell-free mitochondrial DNA in cerebrospinal fluid of patients with relapsing-remitting multiple sclerosis. Significantly higher levels of mtDNA were found in patients compared to controls and there was an inverse correlation between disease duration and mtDNA concentration...
December 23, 2016: Mitochondrion
https://www.readbyqxmd.com/read/28007011/mimicking-the-acute-myeloid-leukemia-niche-for-molecular-study-and-drug-screening
#11
Mohammad Houshmand, Masoud Soleimani, Amir Atashi, Giuseppe Saglio, Mohammad Abdollahi, Mahin Nikougoftar Zarif
Bone marrow niche is a major contributing factor in leukemia development and drug resistance in acute myeloid leukemia (AML) patients. Although mimicking leukemic bone marrow niche relies on two-dimensional (2D) culture conditions, it cannot recapitulate complex bone marrow structure that causes introduction of different three-dimensional (3D) scaffolds. Simultaneously, microfluidic platform by perfusing medium culture mimic interstitial fluid flow, along with 3D scaffold would help for mimicking bone marrow microenvironment...
January 13, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28004290/quantitative-analysis-of-aquaporin-expression-levels-during-the-development-and-maturation-of-the-inner-ear
#12
Takushi Miyoshi, Taro Yamaguchi, Kiyokazu Ogita, Yasuko Tanaka, Ken-Ichi Ishibashi, Hiroaki Ito, Taisuke Kobayashi, Takayuki Nakagawa, Juichi Ito, Koichi Omori, Norio Yamamoto
Aquaporins (AQPs) are a family of small membrane proteins that transport water molecules across the plasma membrane along the osmotic gradient. Mammals express 13 subtypes of AQPs, including the recently reported "subcellular AQPs", AQP11 and 12. Each organ expresses specific subsets of AQP subtypes, and in the inner ear, AQPs are essential for the establishment and maintenance of two distinct fluids, endolymph and perilymph. To evaluate the contribution of AQPs during the establishment of inner ear function, we used quantitative reverse transcription polymerase chain reaction to quantify the expression levels of all known AQPs during the entire development and maturation of the inner ear...
December 21, 2016: Journal of the Association for Research in Otolaryngology: JARO
https://www.readbyqxmd.com/read/27995899/passive-mechanism-of-pitch-recoil-in-flapping-insect-wings
#13
D Ishihara, T Horie
The high torsional flexibility of insect wings allows for elastic recoil after the rotation of the wing during stroke reversal. However, the underlying mechanism of this recoil remains unclear because of the dynamic process of transitioning from the wing rotation during stroke reversal to the maintenance of a high angle of attack during the middle of each half-stroke, when the inertial, elastic, and aerodynamic effects all have a significant impact. Therefore, the interaction between the flapping wing and the surrounding air was directly simulated by simultaneously solving the incompressible Navier-Stokes equations, the equation of motion for an elastic body, and the fluid-structure interface conditions using the three-dimensional finite element method...
December 20, 2016: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/27994015/newly-formed-endothelial-cells-regulate-myeloid-cell-activity-following-spinal-cord-injury-via-expression-of-cd200-ligand
#14
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/27959626/the-pathogenesis-of-ebola-virus-disease
#15
Laura Baseler, Daniel S Chertow, Karl M Johnson, Heinz Feldmann, David M Morens
For almost 50 years, ebolaviruses and related filoviruses have been repeatedly reemerging across the vast equatorial belt of the African continent to cause epidemics of highly fatal hemorrhagic fever. The 2013-2015 West African epidemic, by far the most geographically extensive, most fatal, and longest lasting epidemic in Ebola's history, presented an enormous international public health challenge, but it also provided insights into Ebola's pathogenesis and natural history, clinical expression, treatment, prevention, and control...
December 7, 2016: Annual Review of Pathology
https://www.readbyqxmd.com/read/27959569/biochemical-characterization-of-echinococcus-multilocularis-antigen-b3-reveals-insight-into-adaptation-and-maintenance-of-parasitic-homeostasis-at-the-host-parasite-interface
#16
Chun-Seob Ahn, Jeong-Geun Kim, Xiumin Han, Young-An Bae, Woo-Jae Park, Insug Kang, Hu Wang, Yoon Kong
Alveolar echinococcosis (AE) caused by Echinococcus multilocularis metacestode is frequently associated with deleterious zoonotic helminthiasis. The growth patterns and morphological features of AE, such as invasion of the liver parenchyme and multiplication into multivesiculated masses, are similar to those of malignant tumors. AE has been increasingly detected in several regions of Europe, North America, Central Asia, and northwestern China. An isoform of E. multilocularis antigen B3 (EmAgB3) shows a specific immunoreactivity against patient sera of active-stage AE, suggesting that EmAgB3 might play important roles during adaptation of the parasite to hosts...
December 28, 2016: Journal of Proteome Research
https://www.readbyqxmd.com/read/27956287/toxic-anterior-segment-syndrome-caused-by-autoclave-reservoir-wall-biofilms-and-their-residual-toxins
#17
Andrew L Sorenson, Robert L Sorenson, David J Evans
PURPOSE: To identify etiology of toxic anterior segment syndrome (TASS) after uneventful phacoemulsification. SETTING: EyeMD Laser and Surgery Center, Oakland, California. DESIGN: Retrospective case series. METHODS: Patient charts with TASS were reviewed. Reservoirs of 2 autoclaves associated with these cases were cultured for bacterial contamination. Cultures were performed on 23 other autoclave reservoirs at surgery centers in the local area...
November 2016: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/27926672/mechanisms-predisposing-factors-and-prognosis-of-intra-operative-vertebral-subluxation-during-pedicle-subtraction-osteotomy-in-surgical-correction-of-thoracolumbar-kyphosis-secondary-to-ankylosing-spondylitis
#18
Bang-Ping Qian, Sai-Hu Mao, Jun Jiang, Bin Wang, Yong Qiu
STUDY DESIGN: A retrospective study. OBJECTIVE: To analyze the mechanisms, predisposing factors and prognosis of the intraoperative vertebral subluxation (VS) during pedicle subtraction osteotomy (PSO) for thoracolumbar kyphosis secondary to ankylosing spondylitis (AS). SUMMARY OF BACKGROUND DATA: VS is one of the most daunting challenges that surgeons encounter during PSO closure, especially in AS patients with ankylosed and mostly osteoporotic spine...
December 6, 2016: Spine
https://www.readbyqxmd.com/read/27923233/efficacy-of-adipodren%C3%A2-in-reducing-interleukin-1-induced-lymphatic-endothelial-hyperpermeability
#19
Valerio Ciccone, Martina Monti, Giulia Antonini, Luisa Mattoli, Michela Burico, Francesca Marini, Anna Maidecchi, Lucia Morbidelli
Lymphatic leakage can be seen as a detrimental phenomenon associated with fluid retention and deposition as well as gain of weight. Moreover, lymphatic dysfunction is associated with an inflammatory environment and can be a substrate for other health conditions. A number of treatments can ameliorate lymphatic vasculature: natural substances have been used as treatment options particularly suitable for their consolidated effectiveness and safety profile. Here we report the protective effect of AdipoDren®, an association of a series of plant-derived natural complexes, on lymphatic endothelium permeability promoted by interleukin-1 beta (IL-1β) and the associated molecular mechanisms...
December 7, 2016: Journal of Vascular Research
https://www.readbyqxmd.com/read/27919740/metabolic-differences-between-cold-stored-and-machine-perfused-porcine-kidneys-a-1-h-nmr-based-study
#20
Jay Nath, Tom B Smith, Kamlesh Patel, Sam R Ebbs, Alex Hollis, Daniel A Tennant, Christian Ludwig, Andrew R Ready
Hypothermic machine perfusion (HMP) and static cold storage (SCS) are the two methods used to preserve deceased donor kidneys prior to transplant. This study seeks to characterise the metabolic profile of HMP and SCS porcine kidneys in a cardiac death donor model. Twenty kidneys were cold flushed and stored for two hours following retrieval. Paired kidneys then underwent 24 h of HMP or SCS or served as time zero controls. Metabolite quantification in both storage fluid and kidney tissue was performed using one dimensional (1)H NMR spectroscopy...
December 3, 2016: Cryobiology
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