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https://www.readbyqxmd.com/read/29458194/differential-effects-of-acute-versus-chronic-stress-on-ethanol-sensitivity-evidence-for-interactions-on-both-behavioral-and-neuroimmune-outcomes
#1
Tamara L Doremus-Fitzwater, Jacqueline E Paniccia, Anny Gano, Andrew Vore, Terrence Deak
Acute alcohol intoxication induces significant alterations in brain cytokines. Since stress challenges also profoundly impact central cytokine expression, these experiments examined the influence of acute and chronic stress on ethanol-induced brain cytokine responses. In Experiment 1, adult male rats were exposed to acute footshock. After a post-stress recovery interval of 0, 2, 4, or 24 h, rats were administered ethanol (4 g/kg; intragastric), with trunk blood and brains collected 3 h later. In non-stressed controls, acute ethanol increased expression of Il-6 and IκBα in the hippocampus...
February 16, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29457455/ultrathin-%C3%AE%C2%BA-carrageenan-chitosan-hydrogel-films-with-high-toughness-and-anti-adhesion-property
#2
Hai Chao Yu, He Zhang, Ke-Feng Ren, Zhimin Ying, Fengbo Zhu, Jin Qian, Jian Ji, Zi Liang Wu, Qiang Zheng
Designing tough biopolymer-based hydrogels as structural biomaterials has both scientific and practical significances. We report a facile approach to prepare polysaccharide-based hydrogel films with remarkable mechanical performances and anti-adhesion property. The hydrogel films with thickness of 40-60 μm were prepared by mixing aqueous solutions of κ-carrageenan (κ-CG) and protonated chitosan (CS), evaporating the solvent, and then swelling the casted film in water to achieve the equilibrium state. The obtained κ-CG/CS gel films with water content of 48-88 wt% possessed excellent mechanical properties superior to most existing biopolymer-based hydrogels, with breaking stress of 2-6...
February 19, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29457411/-effect-of-hip-fracture-at-different-sites-in-elderly-patients-on-prognosis
#3
Cheng Peng, Xiao-Wei Wang, Shao-Guang Li, Zhi Liu, Tian-Sheng Sun, Jian-Zheng Zhang
OBJECTIVE: To determine the effect of site of fracture on the prognosis for patients of elderly hip fracture. METHODS: From January 2012 to December 2014, 667 patients with hip fractures were divided into femoral neck fracture group and intertrochanteric fracture group according to the site of fracture. There were 304 cases of intertrochanteric fracture, including 96 males and 208 females, with an average age of (80.33±7.94) years old. There were 217 cases of femoral neck fracture, including 74 males and 143 females, with an average age of (79...
October 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29457147/a-scoping-review-of-health-outcomes-examined-in-randomized-controlled-trials-using-guided-imagery
#4
Peter R Giacobbi, Jonathan Stewart, Keeley Chaffee, Anna-Marie Jaeschke, Meagan Stabler, George A Kelley
Introduction: Guided imagery involves the controlled visualization of detailed mental images. This integrative health technique is used for healing, health maintenance, or the treatment of specific conditions. Guided imagery is an integral part of mindfulness meditation, hypnosis, and various relaxation exercises. However, evidence to support the widespread use and dissemination of guided imagery interventions has been lacking. The purposes of this scoping review were to document the scope of health outcomes and disease processes examined by guided imagery researchers and the journal outlets where this work has been published...
December 2017: Progress in Preventive Medicine
https://www.readbyqxmd.com/read/29456203/effect-of-vitamin-e-on-reversibility-of-renal-function-following-discontinuation-of-colistin-in-rats-histological-and-biochemical-investigations
#5
Zohra Ghlissi, Ahmed Hakim, Hela Mnif, Rim Kallel, Khaled Zeghal, Tahiya Boudawara, Zouheir Sahnoun
This study was carried out to evaluate spontaneous renal regeneration after stopping colistin methanesulfonate (CMS), which induces tubular damage, and the curative effect of Vitamin E (vit E) in rats. Animals were given the following: sterile saline (n = 6), 300,000 IU/kg/ day of CMS (n = 24), or 450,000 IU/kg/day of CMS (n = 24) for seven days. Each CMS group was subdivided into four subgroups (n = 6) and sacrificed as follows: (i) 12 h after stopping CMS, (ii) two weeks after stopping CMS, (iii) two weeks after stopping treatment with vit E, and (iv) two weeks after stopping treatment with olive oil...
January 2018: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/29456142/the-feronia-receptor-kinase-maintains-cell-wall-integrity-during-salt-stress-through-ca-2-signaling
#6
Wei Feng, Daniel Kita, Alexis Peaucelle, Heather N Cartwright, Vinh Doan, Qiaohong Duan, Ming-Che Liu, Jacob Maman, Leonie Steinhorst, Ina Schmitz-Thom, Robert Yvon, Jörg Kudla, Hen-Ming Wu, Alice Y Cheung, José R Dinneny
Cells maintain integrity despite changes in their mechanical properties elicited during growth and environmental stress. How cells sense their physical state and compensate for cell-wall damage is poorly understood, particularly in plants. Here we report that FERONIA (FER), a plasma-membrane-localized receptor kinase from Arabidopsis, is necessary for the recovery of root growth after exposure to high salinity, a widespread soil stress. The extracellular domain of FER displays tandem regions of homology with malectin, an animal protein known to bind di-glucose in vitro and important for protein quality control in the endoplasmic reticulum...
February 12, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29455915/fatty-acid-composition-enzyme-activities-and-metallothioneins-in-donax-trunculus-mollusca-bivalvia-from-polluted-and-reference-sites-in-the-gulf-of-annaba-algeria-pattern-of-recovery-during-transplantation
#7
Amina Rabei, Aziz Hichami, Hayet Beldi, Sandrine Bellenger, Naim Akhtar Khan, Noureddine Soltani
The gulf of Annaba, the most important touristic and economic coastal zone located in Northeast Algeria, is contaminated by several pollutants from urban, agricultural, harbor and industrial activities. Elevated levels of heavy metals were detected in a locally prevalent edible mollusk Donax trunculus (Bivalvia, Donacidae) widely used as a sentinel species for the assessment of marine pollution. The present work aims to measure the difference between two localities, one being full of different pollutants (Sidi Salem) and the other being relatively clean (El Battah) and to evaluate the ability of D...
February 15, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29455366/phospholipase-d%C3%AE-assists-to-cortical-microtubule-recovery-after-salt-stress
#8
Jindřiška Angelini, Stanislav Vosolsobě, Petr Skůpa, Angela Yeuan Yen Ho, Erica Bellinvia, Olga Valentová, Jan Marc
The dynamic microtubule cytoskeleton plays fundamental roles in the growth and development of plants including regulation of their responses to environmental stress. Plants exposed to hyper-osmotic stress commonly acclimate, acquiring tolerance to variable stress levels. The underlying cellular mechanisms are largely unknown. Here, we show, for the first time, by in vivo imaging approach that linear patterns of phospholipase Dδ match the localization of microtubules in various biological systems, validating previously predicted connection between phospholipase Dδ and microtubules...
January 24, 2018: Protoplasma
https://www.readbyqxmd.com/read/29454544/mapping-the-spatiotemporal-evolution-of-solute-transport-in-articular-cartilage-explants-reveals-how-cartilage-recovers-fluid-within-the-contact-area-during-sliding
#9
Brian T Graham, Axel C Moore, David L Burris, Christopher Price
The interstitial fluid within articular cartilage shields the matrix from mechanical stresses, reduces friction and wear, enables biochemical processes, and transports solutes into and out of the avascular extracellular matrix. The balanced competition between fluid exudation and recovery under load is thus critical to the mechanical and biological functions of the tissue. We recently discovered that sliding alone can induce rapid solute transport into buried cartilage contact areas via a phenomenon termed tribological rehydration...
February 8, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29454158/polyisocyanopeptide-hydrogels-a-novel-thermo-responsive-hydrogel-supporting-pre-vascularization-and-the-development-of-organotypic-structures
#10
Jakub Zimoch, Joan Simó Padial, Agnes S Klar, Queralt Vallmajo-Martin, Martin Meuli, Thomas Biedermann, Christopher J Wilson, Alan Rowan, Ernst Reichmann
Molecular and mechanical interactions with the 3D extracellular matrix are essential for cell functions such as survival, proliferation, migration, and differentiation. Thermo-responsive biomimetic polyisocyanopeptide (PIC) hydrogels are promising new candidates for 3D cell, tissue, and organ cultures. This is a synthetic, thermo-responsive and stress-stiffening material synthesized via polymerization of the corresponding monomers using a nickel perchlorate as a catalyst. It can be tailored to meet various demands of cells by modulating its stiffness and through the decoration of the polymer with short GRGDS peptides using copper free click chemistry...
February 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29454143/the-osmorespiratory-compromise-in-rainbow-trout-oncorhynchus-mykiss-the-effects-of-fish-size-hypoxia-temperature-and-strenuous-exercise-on-gill-diffusive-water-fluxes-and-sodium-net-loss-rates
#11
John O Onukwufor, Chris M Wood
In the context of the osmorespiratory compromise, hypoxia and temperature have been little studied relative to exercise, and diffusive water flux rates (as assessed by 3 H 2 O efflux) have received almost no attention. We investigated the effects of fish size, hypoxia, exercise and acute temperature increase on diffusive water flux rates and net sodium loss rates in juvenile rainbow trout. Trout weighing 13-50 g were used to determine the effects of fish size under normoxia. Thereafter 25-50 g trout were selected to assess the effects of different hypoxia levels (3...
February 14, 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29453605/enhanced-recovery-after-surgery-eras-principles-practice-and-feasibility-in-the-elderly
#12
Olle Ljungqvist, Martin Hubner
This is a short overview of the principles of a novel development in surgery called enhanced recovery after surgery (ERAS) programs. This is an evidence-based approach to perioperative care that has shown to reduce complications and recovery time by 30-50%. The main mechanism is reduction of the stress reactions to the operation. These principles have been shown to be particularly well suited for the compromised patient and hence very good for the elderly people who often have co-morbidities and run a higher risk of complications...
February 16, 2018: Aging Clinical and Experimental Research
https://www.readbyqxmd.com/read/29452404/vitamin-e-and-vitamin-c-supplementation-improves-antioxidant-status-and-immune-function-in-oxidative-stressed-breeder-roosters-by-up-regulating-expression-of-gsh-px-gene
#13
Y N Min, Z Y Niu, T T Sun, Z P Wang, P X Jiao, B B Zi, P P Chen, D L Tian, F Z Liu
This study aimed to evaluate the effects of vitamin C and vitamin E on antioxidant capacity and immune function in oxidative-stressed breeder roosters. One hundred twenty 45-week-old Lveyang black-boned breeder roosters were randomly assigned to 5 dietary treatments, including negative control group (NC), positive control group (PC), and 3 trial groups, which were fed the diets containing 300 mg/kg VC, 200 mg/kg VE, or 300 mg/kg VC and 200 mg/kg VE (VC+VE). At 47 wk of age, the positive control and trial groups were subcutaneously injected 3 times every other d with dexamethasone (DEX) 4 mg/kg of body weight, the negative control group was injected with saline...
February 14, 2018: Poultry Science
https://www.readbyqxmd.com/read/29452218/tnf%C3%AE-disrupts-blood-brain-barrier-integrity-to-maintain-prolonged-depressive-like-behavior-in-mice
#14
Yuyan Cheng, Sachi Desse, Ana Martinez, Ryan J Worthen, Richard S Jope, Eleonore Beurel
Recovery from major depressive disorder is difficult, particularly in patients who are refractory to antidepressant treatments. To examine factors that regulate recovery, we developed a prolonged learned helplessness depression model in mice. After the induction of learned helplessness, mice were separated into groups that recovered or did not recover within 4 weeks. Comparisons were made between groups in hippocampal proteins, inflammatory cytokines, and blood brain barrier (BBB) permeability. Compared with mice that recovered and control mice, non-recovered mice displaying prolonged learned helplessness had greater hippocampal activation of glycogen synthase kinase-3 (GSK3), higher levels of tumor necrosis factor-α (TNFα), interleukin-17A, and interleukin-23, increased permeability of the blood brain barrier (BBB), and lower levels of the BBB tight junction proteins occludin, ZO1, and claudin-5...
February 13, 2018: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29451058/developmental-differences-in-stress-responding-after-repeated-underwater-trauma-exposures-in-rats
#15
Daniel E Altman, Laurence P Simmons, Chau T Vuong, Rachel M Taylor, Jason C Sousa, Sean R Marcsisin, Victor E Zottig, Nicole L T Moore
Adolescence is a distinct developmental period characterized by behavioral and physiological maturation. Rapid ongoing changes during neurodevelopment in particular present potential opportunities for stress to have lasting effects on longitudinal outcomes of behavioral and neuroendocrine function. While adult stress effects on outcomes during adulthood have been characterized, little is known about the lasting effects of adolescent repeated stressor exposure on outcomes during adolescence. We have previously reported different stress responses in adolescent rats relative to adult rats, including a blunted fear response outcome in adulthood in rats stressed during adolescence...
February 16, 2018: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/29450855/health-related-quality-of-life-among-us-military-personnel-injured-in-combat-findings-from-the-wounded-warrior-recovery-project
#16
Susan I Woodruff, Michael R Galarneau, Cameron T McCabe, Daniel I Sack, Mary C Clouser
PURPOSE: Little is known about the long-term, health-related quality of life (HRQOL) of those wounded in combat during Operations Enduring Freedom, Iraqi Freedom, and New Dawn. The present study described the overall HRQOL for a large group of US service members experiencing mild-to-severe combat-related injuries, and assessed the unique contribution of demographics, service- and injury-related characteristics, and mental health factors on long-term HRQOL. METHOD: The Wounded Warrior Recovery Project examines patient-reported outcomes in a cohort of US military personnel wounded in combat...
February 15, 2018: Quality of Life Research
https://www.readbyqxmd.com/read/29450135/development-of-a-specific-index-to-detect-malnutrition-in-athletes-validity-in-weight-class-or-intermittent-fasted-athletes
#17
François D Desgorces, Christophe Moinard, Mounir Chennaoui, Jean-François Toussaint, Cyril Petibois, Philippe Noirez
Fasted or weight-category athletes manage their training under strict diet conditions that could impair the stress-recovery balance and result in acute or chronic fatigue. However, to date, no validated biomarker are available to quantify this phenomena. The aim of this study was to assess the validity of a specific index combining plasma albumin and weight change to detect nutrition-related risks of fatigue increase and under-performance in athletes experiencing particular nutritional conditions. An athlete's nutrition risk index (ANRI) equation, based on data from lightweight and heavyweight rowers, was developed using relationship between plasma albumin concentrations combined to weight changes with sport performance and overtraining scores and was tested by odds ratio for failure...
June 2017: Biochimie open
https://www.readbyqxmd.com/read/29449874/an-efficient-modified-method-for-plant-leaf-lipid-extraction-results-in-improved-recovery-of-phosphatidic-acid
#18
Sunitha Shiva, Regina Enninful, Mary R Roth, Pamela Tamura, Krishna Jagadish, Ruth Welti
Background: Lipidomics plays an important role in understanding plant adaptation to different stresses and improving our knowledge of the genes underlying lipid metabolism. Lipidomics involves lipid extraction, sample preparation, mass spectrometry analysis, and data interpretation. One of the practical challenges for large-scale lipidomics studies on plant leaves is the requirement of an efficient and rapid extraction method. Results: A single-extraction method with a polar solvent mixture gives results comparable to a widely used, multi-extraction method when tested on both Arabidopsis thaliana and Sorghum bicolor leaf tissue...
2018: Plant Methods
https://www.readbyqxmd.com/read/29448246/effect-of-mst1-on-endometriosis-apoptosis-and-migration-role-of-drp1-related-mitochondrial-fission-and-parkin-required-mitophagy
#19
Qingdong Zhao, Mingxia Ye, Wen Yang, Min Wang, Mingxia Li, Chenglei Gu, Luyang Zhao, Zhe Zhang, Weidong Han, Wensheng Fan, Yuanguang Meng
BACKGROUND/AIMS: Mitochondrial homeostasis is implicated in the development and progression of endometriosis through poorly defined mechanisms. Mst1 is the major growth suppressor related to cancer migration, apoptosis and proliferation. However, whether Mst1 is involved in endometriosis apoptosis and migration via regulating the mitochondrial function remains to be elucidated. METHODS: Expression of Mst1 in endometriosis was examined via western blots. Cellular apoptosis was detected via MTT and TUNEL assay...
February 9, 2018: Cellular Physiology and Biochemistry
https://www.readbyqxmd.com/read/29448233/earth-s-field-nmr-detection-of-oil-under-arctic-ice-water-suppression
#20
Mark S Conradi, Stephen A Altobelli, Nicholas J Sowko, Susan H Conradi, Eiichi Fukushima
Earth's field NMR has been developed to detect oil trapped under or in Arctic sea-ice. A large challenge, addressed here, is the suppression of the water signal that dominates the oil signal. Selective suppression of water is based on relaxation time T 1 because of the negligible chemical shifts in the weak earth's magnetic field, making all proton signals overlap spectroscopically. The first approach is inversion-null recovery, modified for use with pre-polarization. The requirements for efficient inversion over a wide range of B 1 and subsequent adiabatic reorientation of the magnetization to align with the static field are stressed...
February 7, 2018: Journal of Magnetic Resonance
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