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Yunting Lei, Yuxing Xu, Christian Hettenhausen, Chengkai Lu, Guojing Shen, Cuiping Zhang, Jing Li, Juan Song, Honghui Lin, Jianqiang Wu
BACKGROUND: Soil salinity is an important factor affecting growth, development, and productivity of almost all land plants, including the forage crop alfalfa (Medicago sativa). However, little is known about how alfalfa responds and adapts to salt stress, particularly among different salt-tolerant cultivars. RESULTS: Among seven alfalfa cultivars, we found that Zhongmu-1 (ZM) is relatively salt-tolerant and Xingjiang Daye (XJ) is salt-sensitive. Compared to XJ, ZM showed slower growth under low-salt conditions, but exhibited stronger tolerance to salt stress...
February 15, 2018: BMC Plant Biology
Han Qi, Zheng Liu, Han Cao, Wei-Ping Sun, Wen-Juan Peng, Bin Liu, Sheng-Jie Dong, Yu-Tao Xiang, Ling Zhang
Background: Salt-sensitive hypertension (SSH) is an intermediate inherited phenotype of essential hypertension as well as being an independent risk factor for cardiovascular disease. However, effective medications for the treatment of SSH have not been clarified. This study was to compare the efficacious of different classes of antihypertensive agents combined with salt intake on the reduction of blood pressure in patients with salt-sensitive hypertension (SSH). Methods: We used sources as PubMed, EMBASE, Cochrane Library, CENTRAL, ClinicalTrials...
February 9, 2018: American Journal of Hypertension
Mark Y Jeong, Ying H Lin, Sara A Wennersten, Kimberly M Demos-Davies, Maria A Cavasin, Jennifer H Mahaffey, Valmen Monzani, Chandrasekhar Saripalli, Paolo Mascagni, T Brett Reece, Amrut V Ambardekar, Henk L Granzier, Charles A Dinarello, Timothy A McKinsey
There are no approved drugs for the treatment of heart failure with preserved ejection fraction (HFpEF), which is characterized by left ventricular (LV) diastolic dysfunction. We demonstrate that ITF2357 (givinostat), a clinical-stage inhibitor of histone deacetylase (HDAC) catalytic activity, is efficacious in two distinct murine models of diastolic dysfunction with preserved EF. ITF2357 blocked LV diastolic dysfunction due to hypertension in Dahl salt-sensitive (DSS) rats and suppressed aging-induced diastolic dysfunction in normotensive mice...
February 7, 2018: Science Translational Medicine
Stian Ludvigsen, Costantino Mancusi, Simon Kildal, Giovanni de Simone, Eva Gerdts, Kirsti Ytrehus
Aim of study was to examine experimentally the adult female hypertensive heart in order to determine the role of ovary function in the response of the heart to salt-dependent hypertension. Dahl salt-sensitive rats, age 12 weeks, with/without ovariectomy were fed a standard (0.3% NaCl) or high-salt diet (8%) for 16 weeks. Mean arterial blood pressure monitored noninvasively in conscious state increased significantly by high salt. Echocardiography was performed at baseline and endpoint. Heart function and molecular changes were evaluated at endpoint by left ventricle catheterization, by sirius red staining for collagen and by gene expression using quantitative RT-PCR for selected genes...
February 2018: Physiological Reports
Chuanfa Liu, Guanting Niu, Huchen Zhang, Yafei Sun, Shubin Sun, Fugen Yu, Shan Lu, Yonghua Yang, Jianming Li, Zhi Hong
Asparagine (Asn/N)-linked glycans are important for protein folding, trafficking and endoplasmic reticulum-associated degradation in eukaryotes. The maturation of glycoproteins involves trimming of mannose residues by mannosidases and addition of other sugar molecules to the three-branched N-glycans in the Golgi. However, the biological importance of the Golgi-mediated mannose trimming is not fully understood. Here, we show that abolishment of two functionally redundant mannosidases MNS1 and MNS2 responsible for α1,2-mannose trimming on A and C branch led to a severe root growth inhibition under salt stress in Arabidopsis...
January 31, 2018: Molecular Plant
Jason D Foss, Jessica Fiege, Yoji Shimizu, John P Collister, Tim Mayerhofer, Laurel Wood, John W Osborn
Hypertension is the leading modifiable risk factor for death worldwide, yet the causes remain unclear and treatment remains suboptimal. Catheter-based renal denervation (RDNX) is a promising new treatment for resistant hypertension, but the mechanisms underlying its antihypertensive effect remain unclear. We recently found that RDNX attenuates deoxycorticosterone acetate-salt hypertension and that this is dependent on ablation of afferent renal nerves and is associated with decreased renal inflammation. To determine if this is common to other models of salt-sensitive hypertension, rats underwent complete RDNX (n = 8), selective ablation of afferent renal nerves (n = 8), or sham denervation (n = 8)...
February 2018: Physiological Reports
Jiří Zahradník, Jaroslav Nunvar, Hana Pařízková, Lucie Kolářová, Andrea Palyzová, Helena Marešová, Michal Grulich, Eva Kyslíková, Pavel Kyslík
Two non-pathogenic strains R89-1 and R90T isolated from poppy seed (Papaver somniferum L.) wastes were phenotypically and genotypically characterized. Multilocus sequence analysis (MLSA) was conducted with six genes (atpD, glnA, gyrB, recA, rpoB, 16S rRNA). The strains represented a new species which clustered with Agrobacterium rubi NBRC 13261T and Agrobacterium skierniewicense Ch11T type strains. MLSA was further accompanied by whole-genome phylogeny, in silico DNA-DNA hybridization (dDDH) and average nucleotide identity (ANI) analyses for both strains...
January 31, 2018: Systematic and Applied Microbiology
XiaoLei Shi, Long Yan, ChunYan Yang, WeiWen Yan, David Octor Moseley, Tao Wang, BingQiang Liu, Rui Di, PengYin Chen, MengChen Zhang
BACKGROUND: Identification of the quantitative trait locus (QTL) underlying salt tolerance is a prerequisite for marker-assisted selection in the salt-tolerant breeding process. METHODS: In this study, the recombinant inbred lines derived from the salt-tolerant elite soybean cultivar 'Jidou 12' and the salt-sensitive elite cultivar 'Ji NF 58' were used to identify the QTL associated with salt tolerance, using both salt tolerance rating (STR) and leaf chlorophyll content (SPAD) as indicators...
February 5, 2018: BMC Research Notes
Mahbube Arabbeigi, Ahmad Arzani, Mohammad Mahdi Majidi, Badraldin Ebrahim Sayed-Tabatabaei, Prasenjit Saha
Aegilops cylindrica, a salt-tolerant gene pool of wheat, is a useful plant model for understanding mechanism of salt tolerance. A salt-tolerant USL26 and a salt-sensitive K44 genotypes of A. cylindrica, originating from Uremia Salt Lake shores in Northwest Iran and a non-saline Kurdestan province in West Iran, respectively, were identified based on screening evaluation and used for this work. The objective of the current study was to investigate the expression patterns of four genes related to ion homeostasis in this species...
February 2018: Physiology and Molecular Biology of Plants: An International Journal of Functional Plant Biology
Ze Wu, Jiahui Liang, Chengpeng Wang, Xin Zhao, Xionghui Zhong, Xing Cao, Guoqing Li, Junna He, Mingfang Yi
Although HsfA3 (heat stress transcription factor A3) is well characterized in heat stress, its roles in other abiotic stresses are less clear. Here, we isolated two homologous HsfA3 genes, LlHsfA3A and LlHsfA3B, from lily (Lilium longiflorum). Both genes were induced by heat stress, but not salt stress. Overexpressing LlHsfA3A in Arabidopsis enhanced its basal and acquired thermotolerance, while overexpressing LlHsfA3B just enhanced its acquired thermotolerance. However, both overexpressed plants showed hypersensitivity to salt stress, and a lack of sucrose exacerbated this salt sensitivity...
January 31, 2018: Journal of Experimental Botany
Kerstin Benz, Julia Schlote, Christoph Daniel, Christoph Kopp, Anke Dahlmann, Agnes Schröder, Nada Cordasic, Bernd Klanke, Karl Hilgers, Jens Titze, Kerstin Amann
BACKGROUND/AIMS: One potential pathomechanism how low nephron number leads to hypertension in later life is altered salt handling. We therefore evaluated changes in electrolyte and water content in wildtype (wt) and GDNF+/- mice with a 30% reduction of nephron number. METHODS: 32 GDNF+/- and 36 wt mice were fed with low salt (LSD, 0.03%, normal drinking water) or high salt (HSD, 4%, 0.9% drinking water) diet for 4 weeks. Blood pressure was continuously measured by telemetry in a subgroup...
January 23, 2018: Kidney & Blood Pressure Research
Jun Wang, Jinyan Zhu, Yadong Zhang, Fangjun Fan, Wenqi Li, Fangquan Wang, Weigong Zhong, Cailin Wang, Jie Yang
Abiotic stresses, such as salinity, greatly threaten the growth and productivity of plants. Rice (Oryza sativa L.) is one of the most important food crops, as well as a monocot model for genomic research. To obtain a global view of the molecular response to salinity stress, we conducted a leaf transcriptome analysis on rice seedlings. Two cultivars of rice subspecies indica, including the salt-tolerant genotype Xian156 and the salt-sensitive genotype IR28, were used in the present study. Eighteen RNA libraries were obtained from these two genotypes at three timepoints (0 h, 48 h and 72 h) after applying salinity stress...
February 1, 2018: Scientific Reports
Katja Witzel, Andrea Matros, Anders L B Møller, Eswarrayya Ramireddy, Christine Finnie, Manuela Peukert, Twan Rutten, Andreas Herzog, Gotthard Kunze, Michael Melzer, Stephanie Kaspar-Schoenefeld, Thomas Schmülling, Birte Svensson, Hans-Peter Mock
Although physiological consequences of plant growth under saline conditions have been well described, understanding the core mechanisms conferring plant salt adaptation has only started. We target the root plasma membrane (PM) proteomes of two barley varieties, cvs. Steptoe and Morex, with contrasting salinity tolerance. In total, 588 PM proteins were identified by mass spectrometry, of which 182 were either cultivar- or salinity stress-responsive. Three candidate proteins with increased abundance in the tolerant cv...
January 31, 2018: Plant, Cell & Environment
Cheryl L Laffer, Fernando Elijovich
No abstract text is available yet for this article.
March 2018: Journal of Hypertension
Kazuomi Kario
PURPOSE OF REVIEW: Sacubitril/valsartan (LCZ696) is a first-in-class, novel-acting, angiotensin receptor neprilysin inhibitor (ARNI) that provides inhibition of neprilysin and the angiotensin (AT 1 ) receptor. A recent clinical trial PRARDIGM-HF demonstrated that this drug is superior to angiotensin-converting enzyme (ACE) inhibitors for improving the prognosis in the patients with heart failure, and this has resulted in the drug being included in clinical practice guidelines for the management of heart failure with reduced ejection fraction (EF)...
January 27, 2018: Current Cardiology Reports
Yang Wang, Chao Chu, Ke-Ke Wang, Jia-Wen Hu, Yu Yan, Yong-Bo Lv, Yu-Meng Cao, Wen-Ling Zheng, Xi-Long Dang, Jing-Tao Xu, Wei Chen, Zu-Yi Yuan, Jian-Jun Mu
Uric acid (UA) has been proposed as an important risk factor for cardiovascular and renal morbidity. We conducted an interventional trial to assess effects of altered salt intake on plasma and urine UA levels and the relationship between UA levels and salt sensitivity in humans. Ninety subjects (18-65 years old) were sequentially maintained on a normal diet for 3 days at baseline, a low-salt diet for 7 days (3.0 g/day, NaCl), and a high-salt diet for an additional 7 days (18.0 g/day of NaCl). Plasma UA levels significantly increased from baseline to low-salt diet and decreased from low-salt to high-salt diet...
January 23, 2018: Scientific Reports
Meike König, Keith Brian Rodenhausen, Sebastian Rauch, Eva Bittrich, Klaus-Jochen Eichhorn, Mathias M Schubert, Manfred Stamm, Petra Uhlmann
We report investigations on the salt-sensitivity of the thermoresponsive behavior of PNIPAAm-brushes applying the quartz-crystal microbalance coupled with spectroscopic ellipsometry technique. This approach enables a detailed study of the optical and mechanical behavior of the polymer coatings. Additional conclusions can be drawn from the difference between both techniques due to a difference in the contrast mechanism of both methods. A linear shift of the phase transition temperature to lower temperatures with the addition of sodium chloride was found, similar to the behavior of free polymer chains in solution...
January 22, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
Changxuan Shao, Haotian Tian, Tianyu Wang, Zhihua Wang, Shuli Chou, Anshan Shan, Baojing Cheng
Although membrane lytic antimicrobial peptides (AMPs) show enormous potential for addressing mounting global antibiotic resistance, therapeutic applications are hindered by their weak antimicrobial activity, high toxicity, salt sensitivity and poor understanding of structure-activity relationships. To investigate the effects of different parameters on the biological activities of AMPs, a rational approach was adopted to design a series of short cationic α-helical peptides comprising the Ac-WxKyWxzzyKxWyK-NH2 sequence, where x: cationic residues (Arg or Lys), y: hydrophobic residues (Ala, Val, Ile or Leu), and zz: β-turn (rigid D-Pro-Gly turn or flexible Gly-Gly turn)...
January 16, 2018: Acta Biomaterialia
Joshua S Speed, Kelly A Hyndman, Malgorzata Kasztan, Jermaine G Johnston, Kaehler J Roth, Jens M Titze, David M Pollock
Impairment in the ability of the skin to properly store Na+ non-osmotically (without water) has recently been hypothesized as contributing to salt-sensitive hypertension. Our lab has shown that endothelial production of endothelin-1 (ET-1) is crucial to skin Na+ handling. Further, it is well established that loss of ETB receptor function impairs Na+ excretion by the kidney. Thus we hypothesized that rats lacking functional ETB receptors (ETB def) will have a reduced capacity of the skin to store Na+ during chronic high salt (HS) intake...
December 13, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
Michelle L Gumz
No abstract text is available yet for this article.
January 3, 2018: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
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