keyword
MENU ▼
Read by QxMD icon Read
search

Environmental stress

keyword
https://www.readbyqxmd.com/read/28646525/preliminary-characterization-of-putative-structural-cuticular-proteins-in-the-malaria-vector-anopheles-sinensis
#1
Dan Zhou, Baiyun Duan, Yan Sun, Lei Ma, Changliang Zhu, Bo Shen
BACKGROUND: The insect cuticle protects against environmental stresses such as insecticides, physical injury, dehydration and pathogenic microorganisms. Structural cuticular proteins (CPs) are the primary components, and are of interest for physiology-based pest management methods. Anopheles sinensis CPs are poorly characterised at present, therefore we performed whole genome sequence analysis and re-analysed available transcriptome data to identify potential insecticide resistance-associated CPs...
June 23, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28646455/human-nucleus-pulposus-intervertebral-disc-cells-becoming-senescent-using-different-treatments-exhibit-a-similar-transcriptional-profile-of-catabolic-and-inflammatory-genes
#2
Sotiris-Spyros Vamvakas, Eleni Mavrogonatou, Dimitris Kletsas
PURPOSE: Chronic low back pain has been associated with intervertebral disc (IVD) degeneration, which is characterized by the accumulation of extracellular matrix (ECM)-degrading proteases and inflammatory molecules in the degenerate tissue. IVD degeneration could be the outcome of natural organismal ageing and/or of the exposure of the disc to cumulative stressful environmental stimuli and is accompanied by an increased population of senescent cells in the tissue. On the other hand, senescent cells are known to secrete proteolytic enzymes and inflammatory molecules, which can contribute to ECM catabolism...
June 23, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28646131/insights-on-the-drivers-of-genetic-divergence-in-the-european-anchovy
#3
Gaetano Catanese, Romain Watteaux, Iratxe Montes, Marco Barra, Paola Rumolo, Diego Borme, Bruno Buongiorno Nardelli, Vincenzo Botte, Maria Grazia Mazzocchi, Simona Genovese, Iole Di Capua, Mikel Iriondo, Andone Estonba, Paolo Ruggeri, Valentina Tirelli, Vincenzo Caputo-Barucchi, Gualtiero Basilone, Angelo Bonanno, Daniele Iudicone, Gabriele Procaccini
Anchovies represent the largest world's marine fish catches and the current threats on their populations impose a sustainable exploitment based on sound scientific information. In the European anchovy (Engraulis encrasicolus), the existence of several populations has been proposed but a global view is missing. Using a multidisciplinary approach, here we assessed the divergence among different ecotypes and its possible causes. SNPs have revealed two functionally distinct ecotypes overlapping in the Central Mediterranean, with one ecotype confined near the river estuaries...
June 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28646114/staphylococcus-aureus-strain-newman-photoinactivation-and-cellular-response-to-sunlight-exposure
#4
Jill S McClary, Lauren M Sassoubre, Alexandria B Boehm
Sunlight influences microbial water quality of surface waters. Previous studies have investigated photoinactivation mechanisms and cellular photostress responses of fecal indicator bacteria (FIB), including Escherichia coli and enterococci, but further work is needed to characterize photostress responses of bacterial pathogens. Here we investigate the photoinactivation of Staphylococcus aureus (strain Newman), a pigmented, waterborne pathogen of emerging concern. We measured photodecay using standard culture-based assays and cellular membrane integrity; and investigated photostress response by measuring the relative number of mRNA transcripts of select oxidative stress, DNA repair, and metabolism genes...
June 23, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28646096/heat-stress-causes-dysfunctional-autophagy-in-oxidative-skeletal-muscle
#5
Alexandra J Brownstein, Shanthi Ganesan, Corey M Summers, Sarah Pearce, Benjamin J Hale, Jason W Ross, Nicholas Gabler, Jacob T Seibert, Robert P Rhoads, Lance H Baumgard, Joshua T Selsby
We have previously established that 24 h of environmental hyperthermia causes oxidative stress and have implicated mitochondria as likely contributors to this process. Given this, we hypothesized that heat stress would lead to increased autophagy/mitophagy and a reduction in mitochondrial content. To address this hypothesis pigs were housed in thermoneutral (TN; 20°C) or heat stress (35°C) conditions for 1- (HS1) or 3- (HS3) days and the red and white portions of the semitendinosus collected. We did not detect differences in glycolytic muscle...
June 2017: Physiological Reports
https://www.readbyqxmd.com/read/28645948/the-relationship-between-bicycle-commuting-and-perceived-stress-a-cross-sectional-study
#6
Ione Avila-Palencia, Audrey de Nazelle, Tom Cole-Hunter, David Donaire-Gonzalez, Michael Jerrett, Daniel A Rodriguez, Mark J Nieuwenhuijsen
INTRODUCTION: Active commuting - walking and bicycling for travel to and/or from work or educational addresses - may facilitate daily, routine physical activity. Several studies have investigated the relationship between active commuting and commuting stress; however, there are no studies examining the relationship between solely bicycle commuting and perceived stress, or studies that account for environmental determinants of bicycle commuting and stress. The current study evaluated the relationship between bicycle commuting, among working or studying adults in a dense urban setting, and perceived stress...
June 23, 2017: BMJ Open
https://www.readbyqxmd.com/read/28645264/molecular-cloning-structure-phylogeny-and-expression-analysis-of-the-invertase-gene-family-in-sugarcane
#7
Liming Wang, Yuexia Zheng, Shihui Ding, Qing Zhang, Youqiang Chen, Jisen Zhang
BACKGROUND: Invertases (INVs) are key enzymes regulating sucrose metabolism and are here revealed to be involved in responses to environmental stress in plants. To date, individual members of the invertase gene family and their expression patterns are unknown in sugarcane due to its complex genome despite their significance in sucrose metabolism. RESULTS: In this study, based on comparative genomics, eleven cDNA and twelve DNA sequences belonging to 14 non-redundant members of the invertase gene family were successfully cloned from sugarcane...
June 23, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/28644715/biological-responses-of-the-american-coot-fulica-americana-in-wetlands-with-contrasting-environmental-conditions-basin-of-m%C3%A3-xico
#8
María Eugenia López-Islas, Itzel Ibarra-Meza, Esperanza Ortiz-Ordóñez, Liliana Favari, J Elías Sedeño-Díaz, Eugenia López-López
Wetland ecosystems are subject to severe impacts (physical and chemical) and to the input of various xenobiotics that provoke toxicological consequences. Waterbirds are potential sentinel species of these environments. To analyze how habitat conditions affect the health of Fulica americana, early-warning biomarkers, histopathology, somatic indices, and water quality were examined in two wetlands of the Basin of Mexico: Xochimilco, an urban wetland highly eutrophic with a mixture of pollutants, and Tecocomulco (the reference site), a rural wetland with hunting migratory birds in winter, and with some agricultural contaminants...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644003/chemical-sensor-based-upon-stress-induced-changes-in-the-permeability-of-a-magnetoelastic-wire
#9
Nahla A Hatab, Nichole A Crane, David K Mee, L Neville Howell, Larry R Mooney, Russell L Hallman, Michael J Sepaniak, Vincent E Lamberti
We introduce a chemical sensing technology, named ChIMES (Chemical Identification through Magneto-Elastic Sensing), that can detect a broad range of targets and that has the capability of untethered communication through a metallic or nonmetallic barrier. These features enable many applications in which penetrations into the sampled environment are unwanted or infeasible because of health, safety, or environmental concerns, such as following the decomposition of a dangerous material in a sealed container. The sensing element is passive and consists of a target response material hard-coupled to a magnetoelastic wire...
June 23, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28642842/the-tick-microbiome-why-non-pathogenic-microorganisms-matter-in-tick-biology-and-pathogen-transmission
#10
REVIEW
Sarah I Bonnet, Florian Binetruy, Angelica M Hernández-Jarguín, Olivier Duron
Ticks are among the most important vectors of pathogens affecting humans and other animals worldwide. They do not only carry pathogens however, as a diverse group of commensal and symbiotic microorganisms are also present in ticks. Unlike pathogens, their biology and their effect on ticks remain largely unexplored, and are in fact often neglected. Nonetheless, they can confer multiple detrimental, neutral, or beneficial effects to their tick hosts, and can play various roles in fitness, nutritional adaptation, development, reproduction, defense against environmental stress, and immunity...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28642786/signatures-of-selection-for-environmental-adaptation-and-zebu-%C3%A3-taurine-hybrid-fitness-in-east-african-shorthorn-zebu
#11
Hussain Bahbahani, Abdulfatai Tijjani, Christopher Mukasa, David Wragg, Faisal Almathen, Oyekanmi Nash, Gerald N Akpa, Mary Mbole-Kariuki, Sunir Malla, Mark Woolhouse, Tad Sonstegard, Curtis Van Tassell, Martin Blythe, Heather Huson, Olivier Hanotte
The East African Shorthorn Zebu (EASZ) cattle are ancient hybrid between Asian zebu × African taurine cattle preferred by local farmers due to their adaptability to the African environment. The genetic controls of these adaptabilities are not clearly understood yet. Here, we genotyped 92 EASZ samples from Kenya (KEASZ) with more than 770,000 SNPs and sequenced the genome of a pool of 10 KEASZ. We observe an even admixed autosomal zebu × taurine genomic structure in the population. A total of 101 and 165 candidate regions of positive selection, based on genome-wide SNP analyses (meta-SS, Rsb, iHS, and ΔAF) and pooled heterozygosity (Hp) full genome sequence analysis, are identified, in which 35 regions are shared between them...
2017: Frontiers in Genetics
https://www.readbyqxmd.com/read/28642783/ibor-regulates-photosynthesis-under-heat-stress-by-stabilizing-ibpsbp-in-sweetpotato
#12
Le Kang, Ho S Kim, Young S Kwon, Qingbo Ke, Chang Y Ji, Sung-Chul Park, Haeng-Soon Lee, Xiping Deng, Sang-Soo Kwak
The Orange (Or) protein regulates carotenoid biosynthesis and environmental stress in plants. Previously, we reported that overexpression of the sweetpotato [Ipomoea batatas (L.) Lam] Or gene (IbOr) in transgenic Arabidopsis (referred to as IbOr-OX/At) increased the efficiency of photosystem II (PSII) and chlorophyll content after heat shock. However, little is known about the role of IbOr in PSII-mediated protection against abiotic stress. In this study, comparative proteomics revealed that expression of PsbP (an extrinsic subunit of PSII) is up-regulated in heat-treated IbOr-OX/At plants...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642781/effects-of-nitrogen-supply-on-water-stress-and-recovery-mechanisms-in-kentucky-bluegrass-plants
#13
Shah Saud, Shah Fahad, Chen Yajun, Muhammad Z Ihsan, Hafiz M Hammad, Wajid Nasim, Amanullah, Muhammad Arif, Hesham Alharby
Non-irrigated crops in temperate and irrigated crops in arid regions are exposed to an incessant series of drought stress and re-watering. Hence, quick and efficient recuperation from drought stress may be amongst the key determinants of plant drought adjustment. Efficient nitrogen (N) nutrition has the capability to assuage water stress in crops by sustaining metabolic activities even at reduced tissue water potential. This study was designed to understand the potential of proper nutrition management by studying the morphological and physiological attributes, and assimilation of nitrogen in Kentucky bluegrass under drought stress...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28642625/testing-the-environmental-filtering-concept-in-global-drylands
#14
Yoann Le Bagousse-Pinguet, Nicolas Gross, Fernando T Maestre, Vincent Maire, Francesco de Bello, Carlos Roberto Fonseca, Jens Kattge, Enrique Valencia, Jan Leps, Pierre Liancourt
1. The environmental filtering hypothesis predicts that the abiotic environment selects species with similar trait values within communities. Testing this hypothesis along multiple - and interacting - gradients of climate and soil variables constitutes a great opportunity to better understand and predict the responses of plant communities to ongoing environmental changes. 2. Based on two key plant traits, maximum plant height and specific leaf area (SLA), we assessed the filtering effects of climate (mean annual temperature and precipitation, precipitation seasonality), soil characteristics (soil pH, sand content and total phosphorus) and all potential interactions on the functional structure and diversity of 124 dryland communities spread over the globe...
July 2017: Journal of Ecology
https://www.readbyqxmd.com/read/28641884/oxidative-stress-profiles-in-brain-point-out-a-higher-susceptibility-of-fish-to-waterborne-divalent-mercury-compared-to-dietary-organic-mercury
#15
Olívia Cardoso, Sónia Puga, Fátima Brandão, João Canário, Nelson J O'Driscoll, Maria Ana Santos, Mário Pacheco, Patrícia Pereira
This study examines, for the first time, the neurotoxicity of Hg(II) and MeHg in fish (Diplodus sargus) in a time-course comparative perspective and considering realistic exposure levels and routes. Both forms followed an identical time-variation pattern of accumulation in the brain, but dietary MeHg was more efficiently transported to the brain. MeHg was substantially eliminated from the brain in 28days of depuration, which did not occur for Hg(II). Moreover, Hg(II) displayed a high neurotoxicity potential, as unveiled by the poor activation of brain antioxidant defenses and recurrent oxidative damage (as protein oxidation), while the opposite was recorded upon MeHg exposure...
June 19, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28641745/long-term-stability-of-an-injection-molded-zirconia-bone-level-implant-a-testing-protocol-considering-aging-kinetics-and-dynamic-fatigue
#16
Benedikt C Spies, Madeleine E Maass, Erik Adolfsson, Valter Sergo, Tobias Kiemle, Christoph Berthold, Elisa Gurian, Stefano Fornasaro, Kirstin Vach, Ralf-Joachim Kohal
OBJECTIVE: Separately addressing the fatigue resistance (ISO 14801, evaluation of final product) and aging behavior (ISO 13356, standardized sample) of oral implants made from yttria-stabilized zirconia proved to be insufficient in verifying their long-term stability, since (1) implant processing is known to significantly influence transformation kinetics and (2) aging, up from a certain level, is liable to decrease fatigue resistance. Therefore, the aim of this investigation was to apply a new testing protocol considering environmental conditions adequately inducing aging during dynamic fatigue...
June 19, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28641226/evaluation-of-trace-element-concentration-in-cancerous-and-non-cancerous-tissues-of-human-stomach
#17
Shadi Kohzadi, Farshad Sheikhesmaili, Ramesh Rahehagh, Baran Parhizkar, Ebrahim Ghaderi, Hozan Loqmani, Behzad Shahmoradi, Ebrahim Mohammadi, Afshin Maleki
Gastric cancer has a high mortality rate in west of Iran. Various environmental elements are proposed as cancer risk factors including trace elements. Trace elements can induce initiation or progression of carcinogenesis via oxidative stress and DNA injury. The aim of this study was to measure and compare some trace element concentration (Ca, Cu, Fe, As, Mg, Ni, Cd and Cr) in gastric cancer tissues and normal tissues. For this purpose, 35 patients with gastric cancer and 30 without any cancer were biopsied...
June 17, 2017: Chemosphere
https://www.readbyqxmd.com/read/28641223/paternal-bisphenol-a-diet-changes-prefrontal-cortex-proteome-and-provokes-behavioral-dysfunction-in-male-offspring
#18
Guangying Luo, Ruifen Wei, Shaolin Wang, Jundong Wang
Relatively little attention has been given paternal effects on next generation. Given that Bisphenol A (BPA), a ubiquitous compound in maternal diet, may disrupt brain development and behavior, we hypothesized that paternal BPA diet (PBD) could affect offspring development. Prefrontal cortex (PFC), a vital brain region, is involved in emotion and social behavior. To test whether PBD could alter developing PFC, we carried out a proteomics approach for PFC in male juvenile offspring that responded to PBD (50 mg BPA/kg diet)...
June 14, 2017: Chemosphere
https://www.readbyqxmd.com/read/28641158/determinants-of-cortisol-during-pregnancy-the-abcd-cohort
#19
Laura S Bleker, Tessa J Roseboom, Tanja G Vrijkotte, Rebecca M Reynolds, Susanne R de Rooij
BACKGROUND: Psychosocial stress during pregnancy has been proposed as a major contributor of glucocorticoid-mediated programming of the fetal hypothalamic-pituitary adrenal (HPA) axis, with later adverse health consequences. However, evidence linking maternal stress to maternal cortisol values during pregnancy is inconclusive. A possible explanation for this is that other maternal factors overshadow any potential effects of stress on cortisol levels. We studied a large cohort of pregnant women with extensive data on pregnancy characteristics to determine the respective contributions of biological, environmental and psychosocial stress factors to cortisol levels in pregnancy...
May 31, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28640826/allele-specific-caps-marker-development-and-characterization-of-chalcone-synthase-gene-in-indian-mulberry-morus-spp-family-moraceae
#20
Vivek Arora, M K Ghosh, Soumili Pal, Gaurab Gangopadhyay
Chalcone synthase (CHS) is an essential enzyme in the phenylpropanoid pathway that catalyzes the first step in flavonoid biosynthesis in plants under diverse environmental stress. We have used CHS as a candidate gene in mulberry and developed Single Nucleotide Polymorphism (SNP) based co-dominant Cleaved Amplified Polymorphic Sequence (CAPS) marker associated with the CHS locus. The segregation pattern of the marker was studied in an F1 population derived from a hybridization program between two mulberry genotypes showing polymorphism for the CHS locus...
2017: PloS One
keyword
keyword
56885
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"