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https://www.readbyqxmd.com/read/28723843/no-superior-adaptations-to-carbohydrate-periodization-in-elite-endurance-athletes
#1
Kasper Degn Gejl, Line Thams, Mette Hansen, Torben Rokkedal-Lausch, Peter Plomgaard, Lars Nybo, Filip J Larsen, Daniele A Cardinale, Kurt Jensen, Hans-Christer Holmberg, Kristian Vissing, Niels Ørtenblad
PURPOSE: The present study investigated the effects of periodic CHO restriction on endurance performance and metabolic markers in elite endurance athletes. METHODS: Twenty-six male elite endurance athletes (VO2max: 65.0 ml O2[BULLET OPERATOR]kg[BULLET OPERATOR]min) completed 4 weeks of regular endurance training, while matched and randomized into two groups training with (Low) or without (High) carbohydrate (CHO) manipulation three days a week. The CHO manipulation days consisted of a 1-hr high intensity bike session in the morning, recovery for 7 hrs while consuming isocaloric diets containing either high CHO (414±2...
July 19, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28723241/the-effects-of-stretch-activation-on-ionic-selectivity-of-the-trek-2-k2p-k-channel
#2
Ehsan Nematian-Ardestani, Viwan Jarerattanachat, Prafulla Aryal, Mark S P Sansom, Stephen J Tucker
The TREK-2 (KCNK10) K2P potassium channel can be regulated by variety of polymodal stimuli including pressure. In a recent study, we demonstrated that this mechanosensitive K(+) channel responds to changes in membrane tension by undergoing a major structural change from its 'down' state to the more expanded 'up' state conformation. These changes are mostly restricted to the lower part of the protein within the bilayer, but are allosterically coupled to the primary gating mechanism located within the selectivity filter...
July 19, 2017: Channels
https://www.readbyqxmd.com/read/28721664/reciprocal-influence-of-hmscs-hacat-cultivated-on-electrospun-scaffolds
#3
Sirsendu Bhowmick, Sandra Rother, Heike Zimmermann, Poh S Lee, Stephanie Moeller, Matthias Schnabelrauch, Veena Koul, Dieter Scharnweber
Here, we investigated the synergistic effect of electrospun nanofibrous scaffolds made of gelatin /sulfated hyaluronan (sHA) or native hyaluronan (HA)/chondroitin sulfate (CS) and, keratinocytes (HaCaT)-human mesenchymal stem cells (hMSCs) contact co-culture on epithelial differentiation of hMSCs. The hMSCs were co-cultured in contact with HaCaT cells for 5 days on electrospun scaffold. Results show that electrospun scaffolds containing sulfated glycosaminoglycans (GAGs) stimulate epithelial differentiation in terms of various protein expression markers (keratin 14, ΔNp63α and Pan-cytokeratin) and gene expression of several dermal proteins (keratin 14, ΔNp63α)...
August 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28720936/the-effects-of-superchilling-with-modified-atmosphere-packaging-on-the-physicochemical-properties-and-shelf-life-of-swimming-crab
#4
Bowen Sun, Yuanhui Zhao, Jiangang Ling, Jingfen Yu, Haitao Shang, Zunying Liu
The objective of the present study was to investigate the effects of superchilling with modified atmosphere packaging on the physicochemical properties and shelf life of swimming crab. As the storage time increased, the rates at which the total aerobic plate count, total volatile basic nitrogen, pH, peroxide value and thiobarbituric acid-reactive substances value increase were significantly lower for the superchilling with modified atmosphere packaging (SCS + MAP) treatment compared to superchilling storage (SCS) and chilling storage (CS)...
June 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28719655/protein-analysis-and-gene-expression-indicate-differential-vulnerability-of-iberian-fish-species-under-a-climate-change-scenario
#5
Tiago F Jesus, João M Moreno, Tiago Repolho, Alekos Athanasiadis, Rui Rosa, Vera M F Almeida-Val, Maria M Coelho
Current knowledge on the biological responses of freshwater fish under projected scenarios of climate change remains limited. Here, we examine differences in the protein configuration of two endemic Iberian freshwater fish species, Squalius carolitertii and the critically endangered S. torgalensis that inhabit in the Atlantic-type northern and in the Mediterranean-type southwestern regions, respectively. We performed protein structure modeling of fourteen genes linked to protein folding, energy metabolism, circadian rhythms and immune responses...
2017: PloS One
https://www.readbyqxmd.com/read/28714354/is-cerebral-microbleed-prevalence-relevant-as-a-biomarker-in-amnestic-mild-cognitive-impairment-and-mild-alzheimer-s-disease
#6
Ana Gb Rabelo, Camila Vl Teixeira, Thamires Nc Magalhães, Ana Flávia Mk Carletti-Cassani, Augusto Cs Amato Filho, Helena Pg Joaquim, Leda L Talib, Orestes Forlenza, Patrícia Ao Ribeiro, Rodrigo Secolin, Iscia Lopes-Cendes, Fernando Cendes, Marcio Lf Balthazar
Introduction The search for a reliable neuroimaging biomarker in Alzheimer's disease is a matter of intense research. The presence of cerebral microbleeds seems to be a potential biomarker. However, it is not clear if the presence of microbleeds has clinical usefulness to differentiate mild Alzheimer's disease and amnestic mild cognitive impairment from normal aging. We aimed to verify if microbleed prevalence differs among three groups: mild Alzheimer's disease, amnestic mild cognitive impairment due to Alzheimer's disease, and normal controls...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28714174/immunological-properties-and-protective-efficacy-of-a-single-mycobacterial-antigen-displayed-on-polyhydroxybutyrate-beads
#7
Patricia Rubio-Reyes, Natalie A Parlane, Bryce M Buddle, D Neil Wedlock, Bernd H A Rehm
In 2015, there were an estimated 10.4 million new tuberculosis (TB) cases and 1.4 million deaths worldwide. Bacille Calmette-Guérin (BCG), an attenuated strain of Mycobacterium bovis, is the vaccine available against TB, but it is insufficient for global TB control. This study evaluated the immunogenicity of the Mycobacterium tuberculosis antigen Rv1626 in mice while assessing the effect of co-delivering either Cpe30 (immunostimulatory peptide), CS.T3378-395 (promiscuous T helper epitope) or flagellin (TLR5 agonist) or a combination of all three immunostimulatory agents...
July 17, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28711014/study-of-the-interaction-of-gb-virus-c-hepatitis-g-virus-fusion-peptides-belonging-to-the-e2-protein-with-phospholipid-langmuir-monolayers
#8
Silvia Pérez-López, Marta Espina, M José Gómara, José Luis Fidalgo, M Asunción Alsina, Concepció Mestres, José Miñones Conde
In order to determine the ability of 1,2-dipalmitoyl phosphatidylcholine (DPPC) and 1,2-dioleoyl phosphatidylglycerol (DOPG) to host peptide sequences belonging to the E2 protein of GBV virus C/Hepatitis G virus, the behaviour of Langmuir monolayers formed by these phospholipids and E2 (12-26), E2 (354-363) and E2 (chimeric) peptide sequences was analysed from data of surface pressure (π) versus area per molecule (A) isotherms, compression modulus (Cs(-1)), excess Gibbs energy of mixing (ΔGexc) and total Gibbs energy of mixing (ΔGmix)...
June 28, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28706941/application-of-response-surface-methodology-to-study-the-effects-of-brisket-fat-soy-protein-isolate-and-cornstarch-on-nutritional-and-textural-properties-of-rabbit-sausages
#9
Joseph M Wambui, Edward G Karuri, Margaret M M Wanyoike
The effects of brisket fat, soy protein isolate, and cornstarch on chemical and textural properties of rabbit sausages were studied using surface response methodology. Sausage samples were prepared using a five-level three-variable Central Composite Rotatable Design with 16 combinations, including two replicates of the center point, carried out in random order. The level of brisket fat (BF), soy protein isolate (SPI), and cornstarch (CS) in the sausage formulation ranged within 8.3-16.7%, 0.7-2.3%, and 1.3-4...
2017: International journal of food science
https://www.readbyqxmd.com/read/28706558/qiliqiangxin-enhances-cardiac-glucose-metabolism-and-improves-diastolic-function-in-spontaneously-hypertensive-rats
#10
Jingfeng Wang, Zhiming Li, Yanyan Wang, Jingjing Zhang, Weipeng Zhao, Mingqiang Fu, Xueting Han, Jingmin Zhou, Junbo Ge
Cardiac diastolic dysfunction has emerged as a growing type of heart failure. The present study aims to explore whether Qiliqiangxin (QL) can benefit cardiac diastolic function in spontaneously hypertensive rat (SHR) through enhancement of cardiac glucose metabolism. Fifteen 12-month-old male SHRs were randomly divided into QL-treated, olmesartan-treated, and saline-treated groups. Age-matched WKY rats served as normal controls. Echocardiography and histological analysis were performed. Myocardial glucose uptake was determined by (18)F-FDG using small-animal PET imaging...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28705112/pcl-tcp-wet-spun-scaffolds-carrying-antibiotic-loaded-microspheres-for-bone-tissue-engineering
#11
Elbay Malikmammadov, Tugba Endogan Tanir, Aysel Kiziltay, Vasif Hasirci, Nesrin Hasirci
Scaffolds produced for tissue engineering applications are proven to be promising alternatives to be used in healing and regeneration of injured tissues and organs. In this study, porous and fibrous poly(ε-caprolactone) (PCL) scaffolds were prepared by wet spinning technique and modified by addition of tricalcium phosphate (TCP) and by immobilizing gelatin onto fibers. Meanwhile, gelatin microspheres carrying Ceftriaxone sodium (CS), a model antibiotic, were added onto the scaffolds and antimicrobial activity of CS was investigated against Escherichia coli (E...
July 14, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28704797/knockout-of-rage-ameliorates-mainstream-cigarette-smoke-induced-airway-inflammation-in-mice
#12
Mei Chen, Tao Wang, Yongchun Shen, Dan Xu, Xiaoou Li, Jing An, Jiajia Dong, Diandian Li, Fuqiang Wen, Lei Chen
BACKGROUND: The receptor for advanced glycation end products (RAGE), a multiligand receptor, has been proved to be implicated in inflammatory responses in chronic obstructive pulmonary disease (COPD). In this study, we investigated the role of RAGE in cigarette smoke (CS)-induced airway inflammation in COPD. METHODS: Wild-type (WT) and RAGE gene knockout (KO) mice were exposed to mainstream CS or room air for 2h twice daily, 6days per week for consecutive 4weeks...
July 10, 2017: International Immunopharmacology
https://www.readbyqxmd.com/read/28701229/anti-high-mobility-group-box-1-hmgb1-antibody-attenuates-kidney-damage-following-experimental-crush-injury-and-the-possible-role-of-the-tumor-necrosis-factor-%C3%AE-and-c-jun-n-terminal-kinase-pathway
#13
Bin-Fei Zhang, Peng-Fei Wang, Yu-Xuan Cong, Jin-Lai Lei, Hu Wang, Hai Huang, Shuang Han, Yan Zhuang
BACKGROUND: Inflammation plays a crucial role in kidney damage after crush syndrome (CS). Several researchers report that high mobility group box-1 protein (HMGB1) may be the vital trigger in kidney damage, and tumor necrosis factor-α (TNF-α) and c-Jun N-terminal kinase (JNK) are involve in this pathophysiological process, but their biological roles are unclear. This study aimed to explore the relationship between HMGB1, JNK, and TNF-α in kidney damage. METHODS: The crush injury model was established using weight compression...
July 12, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28699908/expression-of-protein-kinase-c-gamma-promotes-cell-migration-in-colon-cancer
#14
Catríona M Dowling, Sheri L Hayes, James J Phelan, Mary Clare Cathcart, Stephen P Finn, Brian Mehigan, Paul McCormick, John C Coffey, Jacintha O'Sullivan, Patrick A Kiely
Despite extensive efforts, Protein Kinase Cs (PKCs) have proven to be an intractable target in cancer therapies. Traditionally it was accepted that PKCs act as tumour promoters, however new research suggests that PKCs may play an important role in the suppression of cancer. A challenge in targeting PKCs is the limited data available in patient samples. One of the PKC isozymes, PKC gamma, is thought to be present only in the brain and has been largely neglected in the context of cancer. Analysis of gene expression levels of PKC gamma in patient matched normal and colon cancer tissue samples revealed an up-regulation of the gene in the cancer tissue of 54% of the patients examined...
July 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28696376/lack-of-additive-effects-of-resveratrol-and-energy-restriction-in-the-treatment-of-hepatic-steatosis-in-rats
#15
Iñaki Milton-Laskibar, Leixuri Aguirre, Alfredo Fernández-Quintela, Anabela P Rolo, João Soeiro Teodoro, Carlos M Palmeira, María P Portillo
The aims of the present study were to analyze the effect of resveratrol on liver steatosis in obese rats, to compare the effects induced by resveratrol and energy restriction and to research potential additive effects. Rats were initially fed a high-fat high-sucrose diet for six weeks and then allocated in four experimental groups fed a standard diet: a control group, a resveratrol-treated group, an energy restricted group and a group submitted to energy restriction and treated with resveratrol. We measured liver triacylglycerols, transaminases, FAS, MTP, CPT1a, CS, COX, SDH and ATP synthase activities, FATP2/FATP5, DGAT2, PPARα, SIRT1, UCP2 protein expressions, ACC and AMPK phosphorylation and PGC1α deacetylation...
July 11, 2017: Nutrients
https://www.readbyqxmd.com/read/28694839/gene-expression-profiling-of-whole-blood-cells-supports-a-more-efficient-mitochondrial-respiration-in-hypoxia-challenged-gilthead-sea-bream-sparus-aurata
#16
Juan Antonio Martos-Sitcha, Azucena Bermejo-Nogales, Josep Alvar Calduch-Giner, Jaume Pérez-Sánchez
BACKGROUND: Acclimation to abiotic challenges, including decreases in O2 availability, requires physiological and anatomical phenotyping to accommodate the organism to the environmental conditions. The retention of a nucleus and functional mitochondria in mature fish red blood cells makes blood a promising tissue to analyse the transcriptome and metabolic responses of hypoxia-challenged fish in an integrative and non-invasive manner. METHODS: Juvenile gilthead sea bream (Sparus aurata) were reared at 20-21 °C under normoxic conditions (> 85% O2 saturation) followed by exposure to a gradual decrease in water O2 concentration to 3...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28693957/follicle-stimulating-hormone-encapsulation-in-the-cholesterol-modified-chitosan-nanoparticles-via-molecular-dynamics-simulations-and-binding-free-energy-calculations
#17
Mohammad Yahyaei, Faramarz Mehrnejad, Hossein Naderi-Manesh, Ali Hossein Rezayan
Follicle-stimulating hormone (FSH) is widely applied in the modern ovarian stimulation techniques. However, it must be administered daily because of its short half-life. Recently, the cholesterol (CS) modified chitosan (CTS) nanogels have attracted significant interest as promising controlled release protein delivery because of their ability to minimize the aggregation and irreversible denaturation of proteins. Herein, we report a molecular dynamics (MD) simulation investigation on the molecular mechanisms of FSH encapsulation in the CS-CTS nanogels...
July 8, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28691226/of-self-lipids-cd1-restricted-t-cells-and-contact-sensitization
#18
Giulia Casorati, Paolo Dellabona
Contact hypersensitivity (CHS) in rodents and contact dermatitis in humans are long-known pathological conditions caused by MHC-restricted T-cell responses. These responses are triggered upon T-cell recognition of neo-antigenic determinants, which are generated by a variety of environmental contact sensitizer (CS) chemicals associating with self-proteins to comprise these neo-antigens. In this issue of the European Journal of Immunology, Betts et al. [Eur. J. Immunol. 2017. 47: 1171-1180] provide intriguing data implying that common small molecule CSs such as dinitrochlorobenzene can also recruit and activate autoreactive CD1-restricted T cells specific for cell-endogenous lipids, which are enriched in human skin...
July 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28689806/cigarette-smoke-impaired-maturation-of-ovarian-follicles-and-normal-growth-of-uterus-inner-wall-of-female-wild-type-and-hypertensive-rats
#19
Hae-Miru Lee, Cho-Won Kim, Kyung-A Hwang, Jae-Hyuck Sung, Jin-Kyu Lee, Kyung-Chul Choi
Cigarette smoke (CS) is well known to be very harmful to human body functions such as fertility, reproduction, and development. CS is considered to more affect patients with hypertension (HT). To estimate the effect of CS associated with female rat's fertility, we examined the histopathological characteristics of the uterus and ovary which were obtained from the female rats exposed to smoke of the standard cigarette (3R4F) for 4 weeks (10h a week) according to the OECD guidelines. The female wild-type Wistar Kyoto (WK) rats (WTR) and spontaneously hypertensive WK rats (SHR) were used to compare the effect of CS on healthy and hypertensive rats...
July 6, 2017: Reproductive Toxicology
https://www.readbyqxmd.com/read/28683182/hyaluronan-collagen-hydrogels-with-sulfated-hyaluronan-for-improved-repair-of-vascularized-tissue-tune-the-binding-of-proteins-and-promote-endothelial-cell-growth
#20
Sandra Rother, Vanessa D Galiazzo, David Kilian, Karen M Fiebig, Jana Becher, Stephanie Moeller, Ute Hempel, Matthias Schnabelrauch, Johannes Waltenberger, Dieter Scharnweber, Vera Hintze
Innovative biomaterial-based concepts are required to improve wound healing of damaged vascularized tissues especially in elderly multimorbid patients. To develop functional hydrogels as 3D cellular microenvironments and as carrier or scavenging systems, e.g., for mediator proteins or proinflammatory factors, collagen fibrils are embedded into a network of photo-crosslinked acrylated hyaluronan (HA), chondroitin sulfate (CS), or sulfated HA (sHA). After lyophilization, the gels show a porous structure and an improved stability against degradation via hyaluronidase...
July 6, 2017: Macromolecular Bioscience
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