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Osmotic stress

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https://www.readbyqxmd.com/read/28730461/low-salinity-affects-cellularity-dna-methylation-and-mrna-expression-of-igf1-in-the-liver-of-half-smooth-tongue-sole-cynoglossus-semilaevis
#1
Siping Li, Feng He, Haishen Wen, Jifang Li, Yufeng Si, Mingyuan Liu, Yajuan Huang, Lingcai Meng
Animal growth depends on feedback regulation of hormone levels and environmental conditions. Insulin-like growth factor-1 (Igf1) promotes cell growth and differentiation and represses apoptosis and is highly regulated by the environment. Moreover, animals modify physiological homeostasis under stressful conditions through epigenetics and genetic regulatory mechanisms. Therefore, a comprehensive understanding of the effects of salt on fish growth is needed. In this study, half smooth tongue sole (Cynoglossus semilaevis) were subjected to 15‰ salinity for 0, 7, and 60 days (D) to assess the effects of low salinity on liver cellularity and growth...
July 21, 2017: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28729898/draft-genome-sequences-of-strains-salinicola-socius-smb35-t-salinicola-sp-mh3r3-1-and-chromohalobacter-sp-smb17-from-the-verkhnekamsk-potash-mining-region-of-russia
#2
Björn E Olsson, Ekaterina S Korsakova, Lyudmila N Anan'ina, Anna A Pyankova, Olga V Mavrodi, Elena G Plotnikova, Dmitri V Mavrodi
Halomonads are moderately halophilic bacteria that are studied as models of prokaryotic osmoadaptation and sources of enzymes and chemicals for biotechnological applications. Despite the progress in understanding the diversity of these organisms, our ability to explain ecological, metabolic, and biochemical traits of halomonads at the genomic sequence level remains limited. This study addresses this gap by presenting draft genomes of Salinicola socius SMB35(T), Salinicola sp. MH3R3-1 and Chromohalobacter sp...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28728841/redox-imbalance-in-a-model-of-rat-mimicking-hutchinson-gilford-progeria-syndrome
#3
Manoj Kumar Chaudhary, Sandeep Singh, Syed Ibrahim Rizvi
Although several etiological factors contribute to the complexity of the aging process, the ultimate component of macromolecular damage and consequent cell death involves the altered redox balance inclined towards increased ROS production and/or decreased antioxidant protection. Given that, the chronic dihydrotachysterol (DHT) intoxication in rats induce Hutchinson Gilford progeria like syndrome, the present study provides the evidence for altered redox balance as evidenced by alteration in parameters of oxidative stress in blood plasma and erythrocytes including MDA, GSH, FRAP AOPP PMRS, AGEs, AChE and osmotic fragility which substantiate the suitability of the model for aging studies...
July 17, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28727570/hyperosmotic-stress-stimulates-autophagy-via-polycystin-2
#4
Daniel Peña-Oyarzun, Rodrigo Troncoso, Catalina Kretschmar, Cecilia Hernando, Mauricio Budini, Eugenia Morselli, Sergio Lavandero, Alfredo Criollo
Various intracellular mechanisms are activated in response to stress, leading to adaptation or death. Autophagy, an intracellular process that promotes lysosomal degradation of proteins, is an adaptive response to several types of stress. Osmotic stress occurs under both physiological and pathological conditions, provoking mechanical stress and activating various osmoadaptive mechanisms. Polycystin-2 (PC2), a membrane protein of the polycystin family, is a mechanical sensor capable of activating the cell signaling pathways required for cell adaptation and survival...
July 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28724898/improvement-in-the-production-of-the-human-recombinant-enzyme-n-acetylgalactosamine-6-sulfatase-rhgalns-in-escherichia-coli-using-synthetic-biology-approaches
#5
Luis H Reyes, Carolina Cardona, Luisa Pimentel, Alexander Rodríguez-López, Carlos J Alméciga-Díaz
Previously, we demonstrated production of an active recombinant human N-acetylgalactosamine-6-sulfatase (rhGALNS) enzyme in Escherichia coli as a potential therapeutic alternative for mucopolysaccharidosis IVA. However, most of the rhGALNS produced was present as protein aggregates. Here, several methods were investigated to improve production and activity of rhGALNS. These methods involved the use of physiologically-regulated promoters and alternatives to improve protein folding including global stress responses (osmotic shock), overexpression of native chaperones, and enhancement of cytoplasmic disulfide bond formation...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28721813/mechanisms-involved-in-the-increased-hemolysis-in-the-fetus-and-newborn
#6
Giuseppe Buonocore, Serafina Perrone, Rodolfo Bracci
BACKGROUND: The suicidal death of erythrocytes should be considered a possible cause of hemolysis and plasma bilirubin overload when there is no evidence of an immune-mediated hemolytic anemia, no consumptive red blood cell disorder, no morphologic or laboratory data to suggest a problem of the red cell membrane, and no evidence of a quantitative or qualitative defect in hemoglobin synthesis. OBJECTIVE: In neonatal period, xenobiotics, cytokines, osmotic shock, energy depletion, oxidative stress, and variation of temperature may induce an alteration of balance between damaging and protecting factors which can be followed by red cell death...
July 18, 2017: Current Pediatric Reviews
https://www.readbyqxmd.com/read/28721396/biodiesel-byproduct-bioconversion-to-rhamnolipids-upstream-aspects
#7
Ana Maria Salazar-Bryam, Roberta Barros Lovaglio, Jonas Contiero
This study focused on two important aspects of the upstream process: the appropriate use of crude glycerol as a low-cost carbon source, and strain selection. The effect of different crude glycerol concentrations on rhamnolipid biosynthesis by two Pseudomonas aeruginosa strains (wild type LBI and mutant LBI 2A1) was studied. Finally, the synthesized rhamnolipids were characterized by mass spectrometry. When both strains were compared, 50 g/L was the most favorable concentration for both, but P. aeruginosa LBI 2A1 showed an increase in rhamnolipid production (2...
June 2017: Heliyon
https://www.readbyqxmd.com/read/28718019/neonatal-placental-and-umbilical-cord-blood-parameters-in-pregnant-women-residing-in-areas-with-intensive-pesticide-application
#8
María Martha Quintana, Berta Vera, Gladis Magnarelli, Natalia Guiñazú, María Gabriela Rovedatti
In rural populations, the proximity to areas with intensive pesticide application represents a risk factor of xenobiotic exposure. Here, we investigated whether newborns born to mothers residing in an area with intensive pesticide application show alterations in placental and neonatal morphometric standards, umbilical cord blood (UCB) biochemical parameters, and/or biomarkers related to oxidative stress and oxidative damage. Samples were collected from 151 healthy pregnant women residing in a rural area (rural group; RG) during the pesticide spraying (SS) and nonspraying (NSS) seasons, as well as from women from an urban population (control group; CG), and grouped according to the delivery type (vaginal or cesarean)...
July 17, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28717597/cuticle-hydrocarbons-in-saline-aquatic-beetles
#9
María Botella-Cruz, Adrián Villastrigo, Susana Pallarés, Elena López-Gallego, Andrés Millán, Josefa Velasco
Hydrocarbons are the principal component of insect cuticle and play an important role in maintaining water balance. Cuticular impermeability could be an adaptative response to salinity and desiccation in aquatic insects; however, cuticular hydrocarbons have been poorly explored in this group and there are no previous data on saline species. We characterized cuticular hydrocarbons of adults and larvae of two saline aquatic beetles, namely Nebrioporus baeticus (Dytiscidae) and Enochrus jesusarribasi (Hydrophilidae), using a gas chromatograph coupled to a mass spectrometer...
2017: PeerJ
https://www.readbyqxmd.com/read/28716860/novel-mechanisms-of-piezo1-dysfunction-in-hereditary-xerocytosis
#10
Edyta Glogowska, Eve R Schneider, Yelena Maksimova, Vincent P Schulz, Kimberly Lezon-Geyda, John Wu, Kottayam Radhakrishnan, Siobán B Keel, Donald Mahoney, Alison M Freidmann, Rachel A Altura, Elena O Gracheva, Sviatoslav N Bagriantsev, Theodosia A Kalfa, Patrick G Gallagher
Mutations in PIEZO1 are the primary cause of hereditary xerocytosis, a clinically heterogeneous, dominantly inherited disorder of erythrocyte dehydration. We utilized next generation sequencing-based techniques to identify PIEZO1 mutations in individuals from 9 kindreds referred with suspected HX and/or undiagnosed congenital hemolytic anemia. Mutations were primarily found in the highly conserved, COOH-terminal pore region domain. Several mutations were novel and demonstrated ethnic specificity. We characterized these mutations using genomic, bioinformatic, cell biology, and physiology-based functional assays...
July 17, 2017: Blood
https://www.readbyqxmd.com/read/28713415/repeated-stand-replacing-crown-fires-affect-seed-morphology-and-germination-in-aleppo-pine
#11
Antonio Saracino, Alessandro Bellino, Emilia Allevato, Antonio Mingo, Stefano Conti, Sergio Rossi, Giuliano Bonanomi, Domenico Carputo, Stefano Mazzoleni
Post-fire reproductive niche of Aleppo pine (Pinus halepensis) is deeply interlaced with fire products. Indeed, the high pH and low osmotic potentials of ash beds under burnt crowns constitute the main constraints to seed germination. In this study, we aim to investigate whether fire recurrence, through the physico-chemical constraints imposed by the ash beds, affects the reproduction ability of P. halepensis at the germination stage. To this aim, Aleppo pine seeds were collected in neighboring even-aged stands subjected to 0, 1, or 2 fires (namely fire cohorts), and seed morphology and germination performance, in terms of cumulative germination and germination kinetics, were studied under increasing osmotic potentials (from 0...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28712849/structure-function-and-mechanism-of-proline-utilization-a-puta
#12
REVIEW
Li-Kai Liu, Donald F Becker, John J Tanner
Proline has important roles in multiple biological processes such as cellular bioenergetics, cell growth, oxidative and osmotic stress response, protein folding and stability, and redox signaling. The proline catabolic pathway, which forms glutamate, enables organisms to utilize proline as a carbon, nitrogen, and energy source. FAD-dependent proline dehydrogenase (PRODH) and NAD(+)-dependent glutamate semialdehyde dehydrogenase (GSALDH) convert proline to glutamate in two sequential oxidative steps. Depletion of PRODH and GSALDH in humans leads to hyperprolinemia, which is associated with mental disorders such as schizophrenia...
July 13, 2017: Archives of Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28710833/effect-of-cellobiose-supplementation-on-in-vitro-fermentation-activity-and-bacterial-numbers-of-porcine-inocula
#13
S N Heinritz, E Weiss, J Seifert, R Mosenthin, S Kuß, A G Degenhardt, T J Koch
In this in vitro study, the modified Hohenheim gas test (HGT) was applied to determine fermentation activity and bacterial composition of pig's faecal microbial inoculum using different concentrations of cellobiose. Incubation procedures included normal buffered and osmotic stress conditions (elevated medium salinity). After 24 hr of fermentation, production of gas, ammonia and short-chain fatty acid (SCFA) was measured, and the gene copy numbers of total bacteria, Lactobacillus spp., Bifidobacterium spp., Roseburia spp...
July 15, 2017: Journal of Animal Physiology and Animal Nutrition
https://www.readbyqxmd.com/read/28710664/role-of-sodium-ion-transporters-and-osmotic-adjustments-in-stress-alleviation-of-cynodon-dactylon-under-nacl-treatment-a-parallel-investigation-with-rice
#14
Swarnendu Roy, Usha Chakraborty
Comparative analyses of the responses to NaCl in Cynodon dactylon and a sensitive crop species like rice could effectively unravel the salt tolerance mechanism in the former. C. dactylon, a wild perennial chloridoid grass having a wide range of ecological distribution is generally adaptable to varying degrees of salinity stress. The role of salt exclusion mechanism present exclusively in the wild grass was one of the major factors contributing to its tolerance. Salt exclusion was found to be induced at 4 days when the plants were treated with a minimum conc...
July 15, 2017: Protoplasma
https://www.readbyqxmd.com/read/28704937/attenuation-of-red-blood-cell-storage-lesions-with-vitamin-c
#15
Kimberly Sanford, Bernard J Fisher, Evan Fowler, Alpha A Fowler, Ramesh Natarajan
Stored red blood cells (RBCs) undergo oxidative stress that induces deleterious metabolic, structural, biochemical, and molecular changes collectively referred to as "storage lesions". We hypothesized that vitamin C (VitC, reduced or oxidized) would reduce red cell storage lesions, thus prolonging their storage duration. Whole-blood-derived, leuko-reduced, SAGM (saline-adenine-glucose-mannitol)-preserved RBC concentrates were equally divided into four pediatric storage bags and the following additions made: (1) saline (saline); (2) 0...
July 12, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/28702041/characterization-of-bip-genes-from-pepper-capsicum-annuum-l-and-the-role-of-cabip1-in-response-to-endoplasmic-reticulum-and-multiple-abiotic-stresses
#16
Hu Wang, Huanhuan Niu, Yufei Zhai, Minghui Lu
Adverse environmental conditions have a detrimental impact on crop growth and development, and cause protein denaturation or misfolding. The binding protein (BiP) plays an important protective role by alleviating endoplasmic reticulum (ER) stress induced by misfolded proteins. In this study, we characterized three BiP genes (CaBiP1, CaBiP2, and CaBiP3) in pepper, an economically important vegetable and spice species. The role of CaBiP1 in plant tolerance to ER stress and adverse environmental conditions (including heat, salinity, osmotic and drought stress) were investigated...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28694800/bacterial-survival-under-extreme-uv-radiation-a-comparative-proteomics-study-of-rhodobacter-sp-isolated-from-high-altitude-wetlands-in-chile
#17
Vilma Pérez, Martha Hengst, Lenka Kurte, Cristina Dorador, Wade H Jeffrey, Ruddy Wattiez, Veronica Molina, Sabine Matallana-Surget
Salar de Huasco, defined as a polyextreme environment, is a high altitude saline wetland in the Chilean Altiplano (3800 m.a.s.l.), permanently exposed to the highest solar radiation doses registered in the world. We present here the first comparative proteomics study of a photoheterotrophic bacterium, Rhodobacter sp., isolated from this remote and hostile habitat. We developed an innovative experimental approach using different sources of radiation (in situ sunlight and UVB lamps), cut-off filters (Mylar, Lee filters) and a high-throughput, label-free quantitative proteomics method to comprehensively analyze the effect of seven spectral bands on protein regulation...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28694531/high-throughput-sequencing-of-rna-transcriptomes-in-ruditapes-philippinarum-identifies-genes-involved-in-osmotic-stress-response
#18
Hongtao Nie, Liwen Jiang, Peng Chen, Zhongming Huo, Feng Yang, Xiwu Yan
Ruditapes philippinarum, is an economically important marine bivalve species. The ability to cope with low salinity stress is quite important for the survival of aquatic species under natural conditions. In this study, the transcriptional response of the Manila clam to low salinity stress was characterized using RNA sequencing. The transcriptomes of a low salinity-treatment group (FRp1, FRp2), which survived under low salinity stress, and control group (SRp1, SRp2), which was not subjected to low salinity stress, were sequenced with the Illumina HiSeq platform...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28690622/nitrogen-metabolism-in-adaptation-of-photosynthesis-to-water-stress-in-rice-grown-under-different-nitrogen-levels
#19
Chu Zhong, Xiaochuang Cao, Jijie Hu, Lianfeng Zhu, Junhua Zhang, Jianliang Huang, Qianyu Jin
To investigate the role of nitrogen (N) metabolism in the adaptation of photosynthesis to water stress in rice, a hydroponic experiment supplying with low N (0.72 mM), moderate N (2.86 mM), and high N (7.15 mM) followed by 150 g⋅L(-1) PEG-6000 induced water stress was conducted in a rainout shelter. Water stress induced stomatal limitation to photosynthesis at low N, but no significant effect was observed at moderate and high N. Non-photochemical quenching was higher at moderate and high N. In contrast, relative excessive energy at PSII level (EXC) was declined with increasing N level...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28690610/toll-like-receptor-4-inhibition-improves-oxidative-stress-and-mitochondrial-health-in-isoproterenol-induced-cardiac-hypertrophy-in-rats
#20
Parmeshwar B Katare, Pankaj K Bagul, Amit K Dinda, Sanjay K Banerjee
BACKGROUND: Inflammation remains a crucial factor for progression of cardiac diseases and cardiac hypertrophy remains an important cause of cardiac failure over all age groups. As a key regulator of inflammation, toll-like receptor 4 (TLR4) plays an important role in pathogenesis of cardiac diseases. Being an important regulator of innate immunity, the precise pathway of TLR4-mediated cardiac complications is yet to be established. Therefore, the primary objective of the present study was to find the role of TLR4 in cardiac hypertrophy and the molecular mechanism thereof...
2017: Frontiers in Immunology
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