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https://www.readbyqxmd.com/read/29786859/synergistic-effects-of-abiotic-stresses-in-plants-a-case-study-of-nitrogen-limitation-and-saturating-light-intensity-in-arabidopsis-thaliana
#1
Itay Cohen, Tal Rapaport, Vered Chalifa-Caspi, Shimon Rachmilevitch
Under natural conditions, plants are regularly exposed to combinations of stress factors. A common example is the conjunction between nitrogen (N) deficiency and excess light. The combined effect of stress factors is often ignored in studies using controlled conditions, possibly resulting in misleading conclusions. To address this issue, the current study examined the physiological behavior of Arabidopsis thaliana under the effect of varying nitrogen levels and light intensities. The joint influence of low N and excess light had an adverse effect on plant growth, chlorophyll and anthocyanin concentrations, photochemical capacity, and the abundance of proteins involved in carbon assimilation and anti-oxidative metabolism...
May 22, 2018: Physiologia Plantarum
https://www.readbyqxmd.com/read/29785918/proteomic-analysis-of-the-effects-of-lutein-on-mammary-gland-metabolism-in-dairy-cows
#2
Caihong Wang, Chong Wang, Jianxin Liu, Hongyun Liu
The aim of the research reported in this Research Communication was to identify differentially expressed proteins in dairy cows with normal and lutein diet and to elucidate the mechanisms of lutein-induced effects on bovine mammary gland metabolism using a comparative proteomic approach. Thirty-three differentially expressed proteins were identified from mammary gland of control diet-fed and lutein diet-fed dairy cows. Among these proteins, 15 were upregulated and 18 were downregulated in the lutein group. Functional analysis of the differentially expressed proteins showed that increased blood flow, depressed glycolysis, enhanced lactose anabolism, decreased fatty acid oxidation and up-regulated beta lactoglobulin expression were connected with lutein addition...
May 2018: Journal of Dairy Research
https://www.readbyqxmd.com/read/29784381/synthesis-of-a-selective-ratiometric-fluorescent-probe-based-on-naphthalimide-and-its-application-in-human-cytochrome-p450-1a
#3
Xiuxuan Zhang, Yan Zhou, Xiaofei Gu, Yu Cheng, Manxin Hong, Liqiang Yan, Fulong Ma, Zhengjian Qi
Cytochrome P450s have brought considerable attention to researchers for their significant correlations with metabolic behaviors of procarcinogenic chemicals. To better understand the roles of CYP1A in biological and physiological systems, we developed a novel ratiometric fluorescence probe N-((2-hydroxyl ethoxy) ethyl)- 4-methoxy-1, 8-naphthalimide (NEMN) allowing for selectively and sensitively monitoring the target enzymes under physiological conditions and living cells. The probe was designed based on substrate predilection of CYP1A and its outstanding O-dealkylation capacity, and 1, 8-naphthalimide was chosen as fluorophore on account of its desirable photophysical properties...
August 15, 2018: Talanta
https://www.readbyqxmd.com/read/29783781/nutraceuticals-in-periodontal-health-a-systematic-review-on-the-role-of-vitamins-in-periodontal-health-maintenance
#4
REVIEW
Alfonso Varela-López, María D Navarro-Hortal, Francesca Giampieri, Pedro Bullón, Maurizio Battino, José L Quiles
Periodontal disease, a relevant public health problem worldwide, is generally considered a common pathology of elderly people. In this respect, there is agreement about that nutritional status may be a modifying factor in the progression and healing of the periodontal tissues. Vitamins have been recommended as nutraceuticals for prevention and treatment of some pathological conditions, such as cardiovascular diseases, obesity or cancer. Thus, a systematic approach to determining how the different vitamin type could ameliorate periodontal risks or improve periodontal health is necessary to further the understanding of the potential benefits and risks of vitamins supplementation use...
May 20, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29781062/antioxidants-in-the-fight-against-atherosclerosis-is-this-a-dead-end
#5
REVIEW
Paola Toledo-Ibelles, Jaime Mas-Oliva
PURPOSE OF REVIEW: The purpose of this review is to focus on the outcome of recent antioxidant interventions using synthetic and naturally occurring molecules established as adjuvant strategies to lipid-lowering or anti-inflammatory therapies designed to reduce the risk of cardiovascular disease. RECENT FINDINGS: To date, accumulated evidence regarding oxidation as a pro-atherogenic factor indicates that redox biochemical events involved in atherogenesis are indeed a very attractive target for the management of cardiovascular disease in the clinic...
May 21, 2018: Current Atherosclerosis Reports
https://www.readbyqxmd.com/read/29780805/stabilization-of-hypoxia-inducible-factor-1-alpha-augments-the-therapeutic-capacity-of-bone-marrow-derived-mesenchymal-stem-cells-in-experimental-pneumonia
#6
Naveen Gupta, Victor Nizet
Bone marrow-derived mesenchymal stem cells (MSCs) have therapeutic effects in experimental models of lung injury. Hypoxia-inducible factor-1 alpha (HIF-1α) is a transcriptional regulator that influences cellular metabolism, energetics, and survival under hypoxic conditions. The current study investigated the effects of stabilizing HIF-1α on the therapeutic capacity of MSCs in an experimental mouse model of bacterial pneumonia. HIF-1α stabilization was achieved by the small molecule prolyl-hydroxlase inhibitor, AKB-4924 (Aerpio Therapeutics, Inc...
2018: Frontiers in Medicine
https://www.readbyqxmd.com/read/29779155/prioritising-risk-factors-for-type-2-diabetes-causal-inference-through-genetic-approaches
#7
REVIEW
Laura B L Wittemans, Luca A Lotta, Claudia Langenberg
PURPOSE OF THE REVIEW: Causality has been demonstrated for few of the many putative risk factors for type 2 diabetes (T2D) emerging from observational epidemiology. Genetic approaches are increasingly being used to infer causality, and in this review, we discuss how genetic discoveries have shaped our understanding of the causal role of factors associated with T2D. RECENT FINDINGS: Genetic discoveries have led to the identification of novel potential aetiological factors of T2D, including the protective role of peripheral fat storage capacity and specific metabolic pathways, such as the branched-chain amino acid breakdown...
May 19, 2018: Current Diabetes Reports
https://www.readbyqxmd.com/read/29778974/metabolic-plasticity-during-transition-to-na%C3%A3-ve-like-pluripotency-in-canine-embryo-derived-stem-cells
#8
I C Tobias, R R Isaac, J G Dierolf, R Khazaee, R C Cumming, D H Betts
Pluripotent stem cells (PSCs) have been described in naïve or primed pluripotent states. Domestic dogs are useful translational models in regenerative medicine, but their embryonic stem cells (cESCs) remain narrowly investigated. Primed-like cESCs expanded in the presence of leukemia inhibitory factor and fibroblast growth factor 2 (LIF-FGF2) acquire features of naïve pluripotency when exposed to chemical inhibitors and LIF (2iL). However, proliferation of cESCs is influenced by the pluripotent state and is comparatively slower than human or mouse PSCs...
May 16, 2018: Stem Cell Research
https://www.readbyqxmd.com/read/29778844/identification-of-micrornas-with-heat-stress-responsive-and-immune-properties-in-marsupenaeus-japonicus-based-on-next-generation-sequencing-and-bioinformatics-analysis-essential-regulators-in-the-heat-stress-host-interactions
#9
Jinbin Zheng, Jiawen Cao, Yong Mao, Yongquan Su, Jun Wang
Summer mortality syndrome is one of the most serious issue for Marsupenaeus japonicus aquaculture in China. Since it causes massive economic loss and threatens sustainability of M. japonicus aquaculture industry, thus, there is an urgent desire to reveal the heat stress-host interactions mechanisms that lead to mass mortalities of M. japonicus in hot summer months. MicroRNAs (miRNAs) are small noncoding RNAs that involved in regulation of diverse biological processes, including stress and immune response, and might serve as potential regulators in the heat stress-host interactions...
May 17, 2018: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/29778055/new-insights-into-the-effects-of-support-matrix-on-the-removal-of-organic-micro-pollutants-and-the-microbial-community-in-constructed-wetlands
#10
Liang Zhang, Tao Lyu, Carlos Andrés Ramírez Vargas, Carlos A Arias, Pedro N Carvalho, Hans Brix
Constructed wetlands (CWs) are an eco-friendly and cost-effective technology to remove organic micro-pollutants (OMPs) from wastewater. The support matrix is an important component in CWs as it has a primary role in the growth and development of plants and microbes. However, the roles of the support matrix in CWs in removing OMPs have not been systematically studied. Therefore, in this study, six common materials (sand, zeolite, blast iron slag, petcoke, polonite and crushed autoclaved aerated concrete (CAAC)) as support matrixes were firstly investigated by batch tests to explore their adsorption capacities to selected OMPs (ibuprofen, iohexol, tebuconazole and imazalil)...
May 16, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29777847/cardiopulmonary-exercise-testing-limitation-in-peripheral-arterial-disease
#11
Zulfiqar Qutrio Baloch, Shabber Agha Abbas, Luke Marone, Abbas Ali
OBJECTIVE: PAD is associated with a markedly increased risk of cardiovascular mortality and remains under-recognized and under-treated. New screening approaches are needed to prevent disability in patients with PAD. METHODS: We performed a retrospective analysis of clinically stable cardiovascular patients who were referred for cardiopulmonary exercise testing (CPET) due to a variety of cardiovascular complaints. Amongst patients who prematurely terminated CPET, their available angiograms were assessed...
May 16, 2018: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/29777414/altered-gut-microbiota-associated-with-intestinal-disease-in-grass-carp-ctenopharyngodon-idellus
#12
Ngoc Tuan Tran, Jing Zhang, Fan Xiong, Gui-Tang Wang, Wen-Xiang Li, Shan-Gong Wu
Gut microbiota plays a crucial importance in their host. Disturbance of the microbial structure and function is known to be associated with inflammatory intestinal disorders. Enteritis is a significant cause of high mortality in fish species, including grass carp (Ctenopharyngodon idellus). Study regarding the association between microbial alternations and enteritis in grass carp is still absent. In this study, changes in the gut microbiota of grass carp suffering from enteritis were investigated using NGS-based 16S rRNA sequencing...
May 18, 2018: World Journal of Microbiology & Biotechnology
https://www.readbyqxmd.com/read/29777386/substrate-metabolism-during-ironman-triathlon-different-horses-on-the-same-courses
#13
Ed Maunder, Andrew E Kilding, Daniel J Plews
Ironman triathlons are ultra-endurance events of extreme duration. The performance level of those competing varies dramatically, with elite competitors finishing in ~ 8:00:00, and lower performing amateurs finishing in ~ 14-15:00:00. When applying appropriate values for swimming, cycling and running economies to these performance times, it is demonstrated that the absolute energy cost of these events is high, and the rate of energy expenditure increases in proportion with the athlete's competitive level...
May 18, 2018: Sports Medicine
https://www.readbyqxmd.com/read/29774990/searching-for-a-mitochondrial-root-to-the-decline-in-muscle-function-with-ageing
#14
EDITORIAL
Marta Gonzalez-Freire, Fatemeh Adelnia, Ruin Moaddel, Luigi Ferrucci
Sarcopenia, the age-related loss of muscle mass and strength, is linked to a range of adverse outcomes, such as impaired physical performance, cognitive function, and mortality. Preventing sarcopenia may reduce the burden of functional decline with aging and its impact on physiological and economic well-being in older adults. Mitochondria in muscle cells lose their intrinsic efficiency and capacity to produce energy during aging, and it has been hypothesized that such a decline is the main driver of sarcopenia...
May 18, 2018: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29774620/cellulose-degradation-in-gastrophysa-viridula-coleoptera-chrysomelidae-functional-characterization-of-two-cazymes-belonging-to-glycoside-hydrolase-family-45-reveals-a-novel-enzymatic-activity
#15
André Busch, Grit Kunert, Natalie Wielsch, Yannick Pauchet
Cellulose is a major component of the primary and secondary cell walls in plants. Cellulose is considered to be the most abundant biopolymer on Earth and represents a large potential source of metabolic energy. Yet, cellulose degradation is rare and mostly restricted to cellulolytic microorganisms. Recently, various metazoans, including leaf beetles, have been found to encode their own cellulases, giving them the ability to degrade cellulose independently of cellulolytic symbionts. Here, we analyzed the cellulosic capacity of the leaf beetle Gastrophysa viridula, which typically feeds on Rumex plants...
May 17, 2018: Insect Molecular Biology
https://www.readbyqxmd.com/read/29774067/estrogen-receptors-orchestrate-cell-growth-and-differentiation-to-facilitate-liver-regeneration
#16
Ta-Lun Kao, Yu-Ping Kuan, Wei-Chung Cheng, Wei-Chun Chang, Long-Bin Jeng, Shuyuan Yeh, Wen-Lung Ma
Background and Aims: Improving liver regeneration (LR) capacity and thereby liver function reserve is a critical bridging strategy for managing liver failure patients. Since estrogen signaling may participate in LR, our aim was to characterize the roles of ERα and ERβ in LR. Methods: LR capacity and estradiol levels following 2/3rd partial hepatectomy (PHx) were compared in ERα-KO or ERβ-KO vs. wildtype mice. The ERα- or ERβ-related transcriptome and interactome were analyzed from regenerating livers, and then bioinformatics was used for pathway discovery and analysis of interactome-transcriptome relationships...
2018: Theranostics
https://www.readbyqxmd.com/read/29773188/the-toxic-effect-of-gallic-acid-on-biochemical-factors-viability-and-proliferation-of-rat-bone-marrow-mesenchymal-stem-cells-was-compensated-by-boric-acid
#17
Mohammad Hussein Abnosi, Somayeh Yari
OBJECTIVE: Gallic acid (GA) and boron are found in many plants. Our previous studies showed 6 ng/ml boric acid (BA) had positive effect on biochemistry of rat bone marrow mesenchymal stem cells (MSCs) and their osteogenic differentiation. Therefore, we investigate the effect of different doses of GA alone and in the presence of BA on MSCs. MATERIALS AND METHODS: the viability of MSCs was assayed using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) and trypan blue at 12, 24 and 36 h in presence of different concentration of GA...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29770425/dynamic-microfluidic-nanocalorimetry-system-for-measuring-caenorhabditis-elegans-metabolic-heat
#18
Roger Krenger, Thomas Lehnert, Martin A M Gijs
Basal heat production is a key phenotype for assessing the metabolic activity of small living organisms. Here, we present a new nanocalorimetric system, based on thin film thermopile sensors combined with microfluidic chips for measuring metabolic heat signals generated by Caenorhabditis elegans larval populations (60 to 220 organisms). In addition to versatile on-chip fluidic manipulation, our microfluidic approach allows confining worm populations close to the sensor surface, thus increasing the sensitivity of the assays...
May 17, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29770190/effects-of-molecular-hydrogen-dissolved-alkaline-electrolyzed-water-on-intestinal-environment-in-mice
#19
Yasuki Higashimura, Yasunori Baba, Ryo Inoue, Tomohisa Takagi, Kazuhiko Uchiyama, Katsura Mizushima, Yasuko Hirai, Chihiro Ushiroda, Yoshinori Tanaka, Yuji Naito
Increasing evidence indicates that molecular hydrogen-dissolved alkaline electrolyzed water (AEW) has various physiological activities such as antioxidative activity. Gut microbiota are deeply associated with our health through a symbiotic relationship. Recent reports have described that most gastrointestinal microbial species encode the genetic capacity to metabolize molecular hydrogen, meaning that molecular hydrogen might affect the gut microbial composition. Nevertheless, AEW effects on gut microbiota remain unknown...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29770169/dietary-total-antioxidant-capacity-and-dietary-polyphenol-intake-and-prevalence-of-metabolic-syndrome-in-polish-adults-a-nationwide-study
#20
Małgorzata Elżbieta Zujko, Anna Waśkiewicz, Anna Maria Witkowska, Danuta Szcześniewska, Tomasz Zdrojewski, Krystyna Kozakiewicz, Wojciech Drygas
Specific classes and subclasses of polyphenols have been studied for their potential effects on noncommunicable diseases, but studies on association between dietary polyphenol intake (DPI) and dietary total antioxidant capacity (DTAC) and MetS (metabolic syndrome) are scarce. Therefore, the aim of this study was to determine associations between DTAC and DPI and the prevalence of MetS and its components in the Polish adult population. Subjects (5690) were participants of the Polish National Multicentre Health Examination Survey (WOBASZ II study) performed in 2013-2014...
2018: Oxidative Medicine and Cellular Longevity
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