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Pre-conditioning

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https://www.readbyqxmd.com/read/28321525/dna-integrity-protecting-and-survival-promoting-activity-of-serotonergic-system-in-sturgeon-juveniles-and-sazans
#1
Arif A Mekhtiev, Turan N Allahverdiyeva, Sevda K Movsum-Zadeh
The study concerns evaluation of engagement of serotonergic system in the mechanisms of antimutagenic protection and survival under adverse conditions. It is shown that under long-term exposure to oil and industrial pollution, simultaneous sharp increase of mutations level in the erythrocytes and downregulation of serotonin-modulating anticonsolidation protein (SMAP; Mekhtiev 2000) in the livers of the sturgeon juveniles (Acipenser gueldenstaedtii persicus) is observed. Mutation level was evaluated by the micronucleus analysis and SMAP level-by the indirect ELISA-test utilizing anti-SMAP immunoglobulins...
March 20, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28320107/pre-conditioning-with-tanshinone-iia-attenuates-the-ischemia-reperfusion-injury-caused-by-liver-grafts-via-regulation-of-hmgb1-in-rat-kupffer-cells
#2
Xuanfei Li, Yakun Wu, Wenfeng Zhang, Jianping Gong, Yao Cheng
OBJECTIVE: We have evaluated the protective mechanism of tanshinone IIA in ischemia/reperfusion injury (IRI) induced by liver grafts, revealing novel supplementary immunotherapy for liver transplantation. METHODS: The tanshinone IIA preconditioning group (TP group) was pretreated with tanshinone IIA via intraperitoneal injection for 1 week before receiving orthotopic liver transplantation with hepatic arterial ischemia for 30min. The sham-operation group (SO group), control graft group (CG group) and IRI group were pretreated with an equivalent volume of normal saline...
March 18, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28301072/pre-conditions-for-eliminating-mitochondrial-dysfunction-and-maintaining-liver-function-after-hepatic-ischaemia-reperfusion
#3
REVIEW
Chenxia Hu, Lanjuan Li
The liver, the largest organ with multiple synthesis and secretion functions in mammals, consists of hepatocytes and Kupffer, stem, endothelial, stellate and other parenchymal cells. Because of early and extensive contact with the external environment, hepatic ischaemia reperfusion (IR) may result in mitochondrial dysfunction, autophagy and apoptosis of cells and tissues under various pathological conditions. Because the liver requires a high oxygen supply to maintain normal detoxification and synthesis functions, it is extremely susceptible to ischaemia and subsequent reperfusion with blood...
March 16, 2017: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/28286624/a-biomechanical-comparison-of-4-strand-and-5-strand-anterior-cruciate-ligament-graft-constructs
#4
Matthew L Broadhead, Animesh A Singla, Nicky Bertollo, David Broe, William R Walsh
Hamstring tendon autografts are used for reconstruction of the anterior cruciate ligament. This study tested the hypothesis that a 5-strand hamstring autograft construct is superior in strength to a 4-strand construct. Four-strand and 5-strand tendon grafts constructs were prepared from ovine flexor tendons and then tested in a uniaxial electromechanical load system with suspensory fixation. The 4-strand and 5-strand constructs were pre-conditioned, stress-relaxed and loaded to ultimate failure. Stress-relaxation, stiffness and ultimate load were compared using a one-way ANOVA...
February 20, 2017: Orthopedic Reviews
https://www.readbyqxmd.com/read/28285647/diet-induced-obesity-has-an-influence-on-intrahepatic-t-cell-responses
#5
Pratibha Gaur, Marcin Cebula, Mathias Riehn, Upneet Hillebrand, Hansjörg Hauser, Dagmar Wirth
AIM: Obesity is accompanied with systemic inflammation and pre-conditions to severe alterations in liver environment and functions. So far, it remains elusive to which extent obesity modulates immune responses during hepatotropic virus infections as well as in autoimmune hepatitis. In this study we investigated the influence of obesity on the intrahepatic immune response, in particular on the function of CD8 T cells as the crucial players in clearance of virus infected hepatocytes. METHODS: We established high fat induced obesity in transgenic mouse models with hepatocyte specific expression of a model antigen (Ova)...
April 2017: Metabolism: Clinical and Experimental
https://www.readbyqxmd.com/read/28285189/exercise-oxidants-and-antioxidants-change-the-shape-of-the-bell-shaped-hormesis-curve
#6
Zsolt Radak, Kazunari Ishihara, Eva Tekus, Csaba Varga, Aniko Posa, Laszlo Balogh, Istvan Boldogh, Erika Koltai
It is debated whether exercise-induced ROS production is obligatory to cause adaptive response. It is also claimed that antioxidant treatment could eliminate the adaptive response, which appears to be systemic and reportedly reduces the incidence of a wide range of diseases. Here we suggest that if the antioxidant treatment occurs before the physiological function-ROS dose-response curve reaches peak level, the antioxidants can attenuate function. On the other hand, if the antioxidant treatment takes place after the summit of the bell-shaped dose response curve, antioxidant treatment would have beneficial effects on function...
March 3, 2017: Redox Biology
https://www.readbyqxmd.com/read/28280793/human-second-window-pre-conditioning-and-post-conditioning-by-nitrite-is-influenced-by-a-common-polymorphism-in-mitochondrial-aldehyde-dehydrogenase
#7
Julian O M Ormerod, Jonathan D W Evans, Hussain Contractor, Matteo Beretta, Sayqa Arif, Bernadette O Fernandez, Martin Feelisch, Bernd Mayer, Rajesh K Kharbanda, Michael P Frenneaux, Houman Ashrafian
Pre-conditioning is an exciting physiological phenomenon that, despite great efforts, has so far resisted translation to mainstream clinical medicine. Many potential triggers (e.g., ischemia of the organ in question or a remote organ, many different drugs) have been investigated, but recent work has implicated activation of mitochondrial aldehyde dehydrogenase (ALDH2) as central to the process. A genetic polymorphism, known as ALDH2*2, is common worldwide (present in up to 40% of Han Chinese people) and produces a functionally different enzyme...
February 2017: JACC. Basic to Translational Science
https://www.readbyqxmd.com/read/28279035/-effect-of-minimal-residual-disease-monitoring-by-multiparameter-flow-cytometry-pre-conditioning-on-prognosis-of-acute-myeloid-leukemia-after-allogeneic-hematopoietic-stem-cell-transplantation
#8
Y Lu, T Wu, H Wang, Y L Zhao, X Y Cao, D Y Liu, J P Zhang, M Xiong, J R Zhou, R J Sun, Z J Wei, S Q Ji, D P Lu
Objective: To investigate the effect of minimal residual disease (MRD) monitoring by multiparameter flow cytometry (MFC) pre-conditioning on prognosis of acute myeloid leukemia in first complete remission (CR(1)-AML) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) , and to explore the value of MRD monitoring by MFC in the prognosis evaluation on allo-HSCT in CR(1)-AML. Methods: Between April 2012 and March 2015, consecutive 186 patients with CR(1)-AML who underwent allo-HSCT were analyzed retrospectively...
February 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28276673/exploring-and-exploiting-the-effect-of-solvent-treatment-in-membrane-separations
#9
Mayamin Razali, Christos Didaskalou, Jeong F Kim, Masoud Babaei, Enrico Drioli, Young Moo Lee, Gyorgy Szekely
It is well-known that solvent treatment and preconditioning play an important role in rejection and flux performance of membranes due to solvent-induced swelling and solvent adsorption. Investigations into the effect of solvent treatment are scarce and application specific, and were limited to a few solvents only. This study reveals the trend in solvent treatment based on solvent polarity in a systematic investigation with the aim to harness such effect for intensification of membrane processes. Nine solvents with polarity indices ranging from 0...
March 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28268929/cardiovascular-interactions-assessed-via-conditional-joint-transfer-entropy-in-patients-developing-atrial-fibrillation-after-coronary-artery-bypass-graft-surgery
#10
Vlasta Bari, Marco Ranucci, Andrea Marchi, Beatrice De Maria, Valeria Pistuddi, Alberto Porta
Assigned the universe of knowledge Ω as composed by one target and two exogenous signals, the conditional joint transfer entropy (CJTE), assessing the amount of information jointly transferred from the two sources to the target that can be uniquely linked to one of the two sources, was found useful to study cardiovascular control. We propose the assessment of CJTE from systolic arterial pressure (SAP) and respiration (R) to heart period (HP) conditioned on R (CJTESAP, R→HP|R) along the baroreflex, and from HP and R to SAP conditioned on R (CJTEHP, R→SAP|R) along the feedforward mechanical pathway, in 134 patients undergoing coronary artery bypass graft surgery before (PRE) and after (POST) the induction of general anesthesia...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28260042/protective-effect-of-naringin-against-the-lps-induced-apoptosis-of-pc12-cells-implications-for-the-treatment-of-neurodegenerative-disorders
#11
Hui Wang, You Song Xu, Miao Lin Wang, Chao Cheng, Rui Bian, Hao Yuan, Yi Wang, Ting Guo, Lin Lin Zhu, Hang Zhou
Several studies have demonstrated that increased apoptosis plays an essential role in neurodegenerative disorders. It has been demonstrated that lipopolysaccharide (LPS) induces apoptosis largely through the production of intracellular reactive oxygen species (ROS) and inflammatory mediators. In this study, we investigated the potential protective mechanisms of naringin (Nar), a pummelo peel extract, on LPS-induced PC12 cell apoptosis. Nar pre-conditioning prior to stimulation with LPS for 18 h was a prerequisite for evaluating PC12 cell viability and the protective mechanisms of Nar...
February 22, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/28260013/wogonin-protects-human-retinal-pigment-epithelium-cells-from-lps-induced-barrier-dysfunction-and-inflammatory-responses-by-regulating-the-tlr4-nf-%C3%AE%C2%BAb-signaling-pathway
#12
Chen Chen, Danni Guo, Guohua Lu
Inflammation in the retinal pigment epithelium is an important contributor to the pathogenesis of age-related macular degeneration. Wogonin is a flavonoid isolated from the root of Scutellaria baicalensis and has multiple pharmacological effects, including anti‑inflammatory effects. The present study sought to determine if the pharmacological effects of wogonin were relevant to the treatment of AMD. ARPE‑19 cells were pre‑conditioned with different concentrations of wogonin (0‑50 µM) prior to induction of inflammation with LPS (2 µg/ml)...
February 28, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28259681/stem-cell-laden-hyaluronic-acid-based-spongy-like-hydrogels-for-an-integrated-healing-of-diabetic-wounds-pathophysiologies
#13
Lucília Pereira da Silva, Tírcia Carlos Santos, Daniel Barreira Rodrigues, Rogério Pedro Pirraco, Mariana Teixeira Cerqueira, Rui Luís Reis, Vitor Manuel Correlo, Alexandra Pinto Marques
The correlation between the pathophysiologies of diabetic foot ulcerations is yet to be established and improved treatments are still required. We propose a strategy that directs inflammation, neo-vascularization and neo-innervation of diabetic wounds. Aiming to potentiate a relevant secretome for nerve regeneration, stem cells were pre-cultured in hyaluronic acid-based spongy-like hydrogels under neurogenic/standard media prior transplantation into diabetic mice full-thickness wounds. Acellular spongy-like hydrogels and empty wounds were used as controls...
March 1, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28254509/human-ventromedial-prefrontal-cortex-and-the-positive-affective-processing-of-safety-signals
#14
Ben J Harrison, Miquel Angel Fullana, Esther Via, Carles Soriano-Mas, Bram Vervliet, Ignacio Martínez-Zalacaín, Jesus Pujol, Christopher G Davey, Tilo Kircher, Benjamin Straube, Narcís Cardoner
Human functional magnetic resonance imaging (fMRI) studies suggest that the ventromedial prefrontal cortex (vmPFC) contributes to the learned discrimination of threat and safety signals, although its precise contribution to these processes remains unclear. One hypothesis is that the vmPFC supports the positive affective processing of safety signals linked to their implicit stress-relieving properties. We set out to test this hypothesis and to examine the specificity of vmPFC responses to safety signal processing versus its high level of 'default mode' activity...
February 28, 2017: NeuroImage
https://www.readbyqxmd.com/read/28240241/calcium-pre-conditioning-substitution-enhances-viability-and-glucose-sensitivity-of-pancreatic-beta-cells-encapsulated-using-polyelectrolyte-multilayer-coating-method
#15
Niusha Nikravesh, Sophie C Cox, Gurpreet Birdi, Richard L Williams, Liam M Grover
Type I diabetics are dependent on daily insulin injections. A therapy capable of immunoisolating pancreatic beta-cells and providing normoglycaemia is an alternative since it would avoid the late complications associated with insulin use. Here, 3D-concave agarose micro-wells were used to culture robust pancreatic MIN-6 cell spheroids within 24 hours that were shown to exhibit cell-cell contact and uniform size (201 ± 2 μm). A polyelectrolyte multilayer (PEM) approach using alginate and poly-l-lysine was employed to coat cell spheroids...
February 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28237259/simple-and-sensitive-determination-of-atrazine-and-its-toxic-metabolites-in-environmental-water-by-carboxyl-modified-polyacrylonitrile-nanofibers-mat-based-solid-phase-extraction-coupled-with-liquid-chromatography-diode-array-detection
#16
Weixin Cao, Biyi Yang, Feifei Qi, Liangliang Qian, Jian Li, Lingeng Lu, Qian Xu
Carboxyl modified polyacrylonitrile nanofibers mat (COOH-PAN NFsM) was prepared as a novel solid-phase extraction (SPE) adsorbent for the rapid and effective extraction of atrazine (ATZ) and its toxic metabolites deisopropylatrazine (DIA) and deethylatrazine (DEA) from environmental water samples. Without any pre-treatment but only with the simple filter, water samples passed through pre-conditioned COOH-PAN NFsM, which integrated extraction, purification and concentration into one single step, and the eluent was directly analyzed by high performance liquid chromatography-diode array detection (HPLC-DAD)...
March 31, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28229212/the-effect-of-a-cyclic-uniaxial-strain-on-urinary-bladder-cells
#17
Dorien Tiemessen, Paul de Jonge, Willeke Daamen, Wout Feitz, Paul Geutjes, Egbert Oosterwijk
PURPOSE: Pre-conditioning of a cell seeded construct may improve the functional outcome of a tissue engineered construct for augmentation cystoplasty. The precise effects of mechanical stimulation on urinary bladder cells in vitro are not clear. In this study we investigate the effect of a cyclic uniaxial strain culture on urinary bladder cells which were seeded on a type I collagen scaffold. METHODS: Isolated porcine smooth muscle cells or urothelial cells were seeded on a type I collagen scaffolds and cultured under static and dynamic conditions...
February 23, 2017: World Journal of Urology
https://www.readbyqxmd.com/read/28227134/cardiovascular-interactions-assessed-via-conditional-joint-transfer-entropy-in-patients-developing-atrial-fibrillation-after-coronary-artery-bypass-graft-surgery
#18
Vlasta Bari, Marco Ranucci, Andrea Marchi, Beatrice De Maria, Valeria Pistuddi, Alberto Porta, Vlasta Bari, Marco Ranucci, Andrea Marchi, Beatrice De Maria, Valeria Pistuddi, Alberto Porta, Vlasta Bari, Andrea Marchi, Alberto Porta, Valeria Pistuddi, Beatrice De Maria, Marco Ranucci
Assigned the universe of knowledge Ω as composed by one target and two exogenous signals, the conditional joint transfer entropy (CJTE), assessing the amount of information jointly transferred from the two sources to the target that can be uniquely linked to one of the two sources, was found useful to study cardiovascular control. We propose the assessment of CJTE from systolic arterial pressure (SAP) and respiration (R) to heart period (HP) conditioned on R (CJTESAP, R→HP|R) along the baroreflex, and from HP and R to SAP conditioned on R (CJTEHP, R→SAP|R) along the feedforward mechanical pathway, in 134 patients undergoing coronary artery bypass graft surgery before (PRE) and after (POST) the induction of general anesthesia...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28224299/clinical-impact-of-sarcopenia-and-relevance-of-nutritional-intake-in-patients-before-and-after-allogeneic-hematopoietic-stem-cell-transplantation
#19
Shouichi Tanaka, Osamu Imataki, Atsuo Kitaoka, Shuji Fujioka, Etsuyo Hanabusa, Yumiko Ohbayashi, Makiko Uemura, Nobuo Arima, Tetsuji Yamamoto
PURPOSE: We conducted a retrospective study to evaluate the effect of rehabilitation on minimizing sarcopenia during hematopoietic stem cell transplantation (HSCT) therapy. METHODS: We developed a protocol to test for retention of physical function during HSCT. Muscle strength, muscle circumference, and muscle function before and after HSCT were measured. Consecutive patients with hematological malignancies who underwent HSCT treatment were recruited in this research...
February 21, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28219225/-effect-of-nccn-2015-risk-stratification-on-prognosis-of-patients-with-acute-myeloid-leukemia-after-allogeneic-hematopoietic-stem-cell-transplantation
#20
Y Lu, T Wu, Y L Zhao, X Y Cao, D Y Liu, J P Zhang, M Xiong, J R Zhou, R J Sun, Z J Wei, H Wang, H X Liu, T Wang, C R Tong, S Q Ji, D P Lu
Objective: To analyze the effect of NCCN (2015) risk stratification on prognosis of patients with acute myeloid leukemia (AML) after allogeneic hematopoietic stem cell transplantation (allo-HSCT) . Methods: Retrospective analysis of 258 patients with AML in CR (186 cases in CR(1), 72 cases in CR(2)) who underwent allogeneic HSCT in our hospital between April 2012 and March 2015 according to NCCN (2015) risk stratification. Of them, 63 cases were classified as low risk, 112 cases intermediate risk and 83 cases high risk...
January 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
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