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Salicylic acid

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https://www.readbyqxmd.com/read/28214444/the-boosted-biomass-and-lipid-accumulation-in-chlorella-vulgaris-by-supplementation-of-synthetic-phytohormone-analogs
#1
Tingting Liu, Fei Liu, Chao Wang, Zhenyao Wang, Yuqin Li
This study attempted at maximizing biomass and lipid accumulation in Chlorella vulgaris by supplementation of natural abscisic acid (ABA) or synthetic 2,4-dichlorophenoxyacetic acid (2,4-D) and 1-naphthaleneacetic acid (NAA) hormone analogs. Amongst three tested additives, NAA-treatment performed remarkable promoting effect on cell growth and lipid biosynthesis. The favorable lipid productivity (418.6mg/L/d) of NAA-treated cells showed 1.48 and 2.24 times more than that of 2,4-D and ABA. NAA-treatment also positively modified the proportions of saturated (C16:0 and C18:0) and monounsaturated fatty acids (C18:1) which were prone to high-quality biofuels-making...
February 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28213239/new-urea-modified-paper-substrate-for-enhanced-analytical-performance-of-negative-ion-mode-paper-spray-mass-spectrometry
#2
Jingjing Liu, Yan He, Shuo Chen, Ming Ma, Shouzuo Yao, Bo Chen
Electrospray ionization mass spectrometry (ESI-MS) analysis in the negative ion mode is adversely affected by ionization suppression caused by electrical discharge and the presence of salts. Paper spray mass spectrometry (PS-MS) also suffers from the above phenomenon, being built on principles similar to those of ESI. Herein, we report the use of a paper substrate modified by 1-[3-(trimethoxysilyl)propyl]urea to improve the sensitivity of quantitative PS-MS analysis in the negative ion mode. The obtained results demonstrated that the urea modified paper substrate can effectively bind anions and highly polar compounds in the sample solution, decreasing competitive ionization in the negative ion mode of PS-MS and significantly reducing the signal intensity of Cl(-) adducts...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28210389/the-use-of-lipohydroxy-acid-in-skin-care-and-acne-treatment
#3
REVIEW
Joshua A Zeichner
Lipohydroxy acid is a derivative of salicylic acid with unique properties that explain its clinical effects in the skin. Lipohydroxy acid has skin renewing, exfoliating, and acne treating properties and is a commonly used ingredient in personal skin care products. The slow penetration of lipohydroxy acid results in an individual cell-by-cell exfoliation that is associated with excellent tolerability. Lipohydroxy acid has been shown to induce dermal thickening by stimulating glycosaminoglycans, collagen, and elastin production...
November 2016: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/28209841/salicylic-acid-dependent-plant-stress-signalling-via-mitochondrial-succinate-dehydrogenase
#4
Katharina Belt, Shaobai Huang, Louise F Thatcher, Hayley Casarotto, Karam Singh, Olivier Van Aken, A Harvey Millar
Mitochondria are known for their role in ATP production and generation of reactive oxygen species (ROS), but little is known about the mechanism of their early involvement in plant stress signalling. The role of mitochondrial succinate dehydrogenase (SDH) in salicylic acid (SA) signalling was analysed using two mutants; disrupted in stress response 1 (dsr1) which is a point mutation in SDH1 identified in a loss of SA signalling screen, and a knockdown mutant (sdhaf2) for SDH assembly factor 2 that is required for FAD insertion into SDH1...
February 16, 2017: Plant Physiology
https://www.readbyqxmd.com/read/28204837/-use-of-salicylic-acid-oils-on-the-scalp
#5
S Melhorn
No abstract text is available yet for this article.
February 15, 2017: Der Hautarzt; Zeitschrift Für Dermatologie, Venerologie, und Verwandte Gebiete
https://www.readbyqxmd.com/read/28197916/regulation-of-plant-cellular-and-organismal-development-by-sumo
#6
Nabil Elrouby
This chapter clearly demonstrates the breadth and spectrum of the processes that SUMO regulates during plant development. The gross phenotypes observed in mutants of the SUMO conjugation and deconjugation enzymes reflect these essential roles, and detailed analyses of these mutants under different growth conditions revealed roles in biotic and abiotic stress responses, phosphate starvation, nitrate and sulphur metabolism, freezing and drought tolerance and response to excess copper. SUMO functions also intersect with those regulated by several hormones such as salicylic acid , abscisic acid , gibberellins and auxin, and detailed studies provide mechanistic clues of how sumoylation may regulate these processes...
2017: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/28197166/ectopic-expression-of-the-wild-grape-wrky-transcription-factor-vqwrky52-in-arabidopsis-thaliana-enhances-resistance-to-the-biotrophic-pathogen-powdery-mildew-but-not-to-the-necrotrophic-pathogen-botrytis-cinerea
#7
Xianhang Wang, Rongrong Guo, Mingxing Tu, Dejun Wang, Chunlei Guo, Ran Wan, Zhi Li, Xiping Wang
WRKY transcription factors are known to play important roles in plant responses to biotic stresses. We previously showed that the expression of the WRKY gene, VqWRKY52, from Chinese wild Vitis quinquangularis was strongly induced 24 h post inoculation with powdery mildew. In this study, we analyzed the expression levels of VqWRKY52 following treatment with the defense related hormones salicylic acid (SA) and methyl jasmonate, revealing that VqWRKY52 was strongly induced by SA but not JA. We characterized the VqWRKY52 gene, which encodes a WRKY III gene family member, and found that ectopic expression in Arabidopsis thaliana enhanced resistance to powdery mildew and Pseudomonas syringae pv...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28195948/early-treatment-with-zofenopril-and-ramipril-in-combination-with-acetyl-salicylic-acid-in-patients-with-left-ventricular-systolic-dysfunction-after-acute-myocardial-infarction-results-of-a-5-year-follow-up-of-patients-of-the-smile-4-study
#8
Claudio Borghi, Stefano Omboni, Salvatore Novo, Dragos Vinereanu, Giuseppe Ambrosio, Ettore Ambrosioni
The SMILE-4 study showed that in patients with left ventricular dysfunction (LVD) following acute myocardial infarction (AMI), early treatment with zofenopril plus acetyl salicylic acid (ASA) is associated with an improved 1-year survival, free from death or hospitalization for cardiovascular (CV) causes, as compared to ramipril plus ASA. We now report on CV outcomes during a 5-year follow-up of the patients of the SMILE-4 study. 386 of the 518 patients completing the study (51.2%) could be tracked after the study end and 265 could be included in the analysis...
February 13, 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28195388/survey-of-conspecific-herbivore-induced-volatiles-from-apple-as-possible-attractants-for-pandemis-pyrusana-lepidoptera-tortricidae
#9
V Giacomuzzi, J Mattheis, E Basoalto, S Angeli, A L Knight
BACKGROUND: Studies were conducted to identify volatiles released by apple foliage untreated or sprayed with a yeast and from untreated and sprayed foliage with actively-feeding larvae of Pandemis pyrusana Kearfott. Field studies then evaluated various combinations of these volatiles when paired with acetic acid as possible adult attractants. RESULTS: The most abundant volatiles released following herbivore-feeding were four green leaf volatiles (GLVs) and acetic acid...
February 13, 2017: Pest Management Science
https://www.readbyqxmd.com/read/28194847/enzyme-initiated-free-radical-polymerization-of-molecularly-imprinted-polymer-nanogels-on-a-solid-phase-with-an-immobilized-radical-source
#10
Mira Daoud Attieh, Yi Zhao, Assem Elkak, Aude Falcimaigne-Cordin, Karsten Haupt
An enzyme-mediated synthetic approach is described for the preparation of molecularly imprinted polymer nanoparticles (MIP-NPs) in aqueous media. Horseradish peroxidase (HRP) was used to initiate the polymerization of methacrylate or vinyl monomers and cross-linkers by catalyzing the generation of free radicals. To prevent entrapment of the enzyme in the cross-linked polymer, and to enable it to be reused, HRP was immobilized on a solid support. MIPs based on 4-vinylpyridine and 1,4-bis(acryloyl)piperazine for the recognition of 2,4-dichlorophenoxyacetic acid (2,4-D) and salicylic acid were synthesized in an aqueous medium...
February 14, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28192718/quantitative-determination-of-five-metabolites-of-aspirin-by-uhplc-ms-ms-coupled-with-enzymatic-reaction-and-its-application-to-evaluate-the-effects-of-aspirin-dosage-on-the-metabolic-profile
#11
Jian-Ping Li, Jian-Ming Guo, Er-Xin Shang, Zhen-Hua Zhu, Yang Liu, Bu-Chang Zhao, Jing Zhao, Zhi-Shu Tang, Jin-Ao Duan
Acetylsalicylic acid (Aspirin, ASA) is a famous drug for cardiovascular diseases in recent years. Effects of ASA dosage on the metabolic profile have not been fully understood. The purpose of our study is to establish a rapid and reliable method to quantify ASA metabolites in biological matrices, especially for glucuronide metabolites whose standards are not commercially available. Then we applied this method to evaluate the effects of ASA dosage on the metabolic and excretion profile of ASA metabolites in rat urine...
December 29, 2016: Journal of Pharmaceutical and Biomedical Analysis
https://www.readbyqxmd.com/read/28185988/effects-of-nonsteroidal-anti-inflammatory-drugs-on-the-renal-excretion-of-indoxyl-sulfate-a-nephro-cardiovascular-toxin-in-rats
#12
Chung-Ping Yu, Douglas H Sweet, Yu-Hsuan Peng, Yow-Wen Hsieh, Pei-Dawn Lee Chao, Yu-Chi Hou, Shiuan-Pey Lin
Chronic kidney disease (CKD) is a health problem worldwide. Indoxyl sulfate (IS) is a nephro-cardiovascular toxin accumulated in CKD patients and cannot be removed through hemodialysis. The renal excretion of IS was mediated by organic anion transporters (OATs) OAT 1 and OAT 3. Because a number of nonsteroidal anti-inflammatory drugs (NSAIDs) have been reported to inhibit OATs, we hypothesize that NSAIDs might inhibit the renal excretion of IS. Rats were intravenously injected IS with and without diclofenac, ketoprofen or salicylic acid, individually...
February 7, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28185215/the-apoptotic-inducible-effects-of-salicylic-acid-on-hepatoma-cell-line-relationship-with-nitric-oxide-signaling
#13
Yahui Liu, Yong Wang, Yue Hu, Shuxiong Ge, Keshi Li, Shuangshuang Wang, Li Li
Clinical and experimental data suggest that salicylic acid (SA) is tumor preventive and NO has a multitude of effects on tumor biology. Therefore, firstly, the aim of our study is to explore the important role of SA in apoptotic induction of liver cancer cells. Secondly, we investigate whether SA mediates the anti-tumor effects by NO signaling pathway. The liver cancer cell line was treated with different concentrations of SA. Cell proliferation was tested using MTS assay and cell apoptosis was assessed by flow cytometry...
February 9, 2017: Journal of Cell Communication and Signaling
https://www.readbyqxmd.com/read/28184369/fouling-resistant-ca-pva-tio2-imprinted-membranes-for-selective-recognition-and-separation-salicylic-acid-from-waste-water
#14
Xiaopeng Yu, Xueyang Mi, Zhihui He, Minjia Meng, Hongji Li, Yongsheng Yan
Highly selective cellulose acetate (CA)/poly (vinyl alcohol) (PVA)/titanium dioxide (TiO2) imprinted membranes were synthesized by phase inversion and dip coating technique. The CA blend imprinted membrane was synthesized by phase inversion technique with CA as membrane matrix, polyethyleneimine (PEI) as the functional polymer, and the salicylic acid (SA) as the template molecule. The CA/PVA/TiO2 imprinted membranes were synthesized by dip coating of CA blend imprinted membrane in PVA and different concentration (0...
2017: Frontiers in Chemistry
https://www.readbyqxmd.com/read/28182985/a-new-fluorogenic-sensing-platform-for-salicylic-acid-derivatives-based-on-%C3%AF-%C3%AF-and-nh-%C3%AF-interactions-between-electron-deficient-and-electron-rich-aromatics
#15
Anup Pandith, Giridhari Hazra, Hong-Seok Kim
A novel simple fluorescent probe was designed for the recognition of electron-rich salicylic acid derivatives (SAs). The imidazole-appended aminomethyl perylene probe 1 selectively differentiated between electron-rich amino-SAs and electron-deficient nitro-SAs in EtOH, exhibiting the highest selectivity and sensitivity toward 5-aminosalicylic acid (5-ASA) and showing strong 1:1 binding (Ka=1.37×10(7)M(-1)). This high selectivity and sensitivity resulted from the synergistic multiple hydrogen bonding interactions of secondary amine and imidazole units and π-π interactions between electron-rich and electron-deficient rings, along with the unusual NH-π interactions between 5-ASA and the perylene moiety of 1...
February 3, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28182949/catalase2-coordinates-sa-mediated-repression-of-both-auxin-accumulation-and-ja-biosynthesis-in-plant-defenses
#16
Hong-Mei Yuan, Wen-Cheng Liu, Ying-Tang Lu
Plants defend against pathogen attack by modulating auxin signaling and activating the salicylic acid (SA) and jasmonic acid (JA) signaling pathways. SA and JA act antagonistically in resistance to specific pathogen types, yet how plants coordinate these phytohormones remains elusive. Here we report that biotrophic-pathogen-induced SA accumulation dampens both auxin and JA synthesis by inhibiting CATALASE2 (CAT2) activity in the model plant Arabidopsis. SA suppression of CAT2 results in increased H2O2 levels and subsequent sulfenylation of tryptophan synthetase β subunit 1, thus depleting the auxin biosynthetic precursor tryptophan...
February 8, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28182944/the-cat-2-comes-back
#17
Musoki Mwimba, Xinnian Dong
Genetic and biochemical evidence supporting CATALASE2 as a salicylic acid (SA) receptor has finally emerged. In this issue of Cell Host & Microbe, Yuan et al. (2017) show that SA binds to CATALASE2 to inhibit auxin and jasmonic acid biosynthetic enzymes as a means to strengthen plant immunity against biotrophic pathogens.
February 8, 2017: Cell Host & Microbe
https://www.readbyqxmd.com/read/28181700/determination-of-partition-coefficients-using-1-h-nmr-spectroscopy-and-time-domain-complete-reduction-to-amplitude-frequency-table-craft-analysis
#18
David Soulsby, Jeryl A M Chica
We have developed a simple, direct and novel method for the determination of partition coefficients and partitioning behavior using (1) H NMR spectroscopy combined with time domain complete reduction to amplitude-frequency tables (CRAFT). After partitioning into water and 1-octanol using standard methods, aliquots from each layer are directly analyzed using either proton or selective excitation NMR experiments. Signal amplitudes for each compound from each layer are then extracted directly from the time domain data in an automated fashion and analyzed using the CRAFT software...
February 9, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28170113/helicoverpa-zea-gut-associated-bacteria-indirectly-induce-defenses-in-tomato-by-triggering-a-salivary-elicitor-s
#19
Jie Wang, Michelle Peiffer, Kelli Hoover, Cristina Rosa, Rensen Zeng, Gary W Felton
Insect gut-associated microbes modulating plant defenses have been observed in beetles and piercing-sucking insects, but the role of caterpillar-associated bacteria in regulating plant induced defenses has not been adequately examined. We identified bacteria from the regurgitant of field-collected Helicoverpa zea larvae using 16S ribosomal RNA (rRNA) gene sequencing and matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry. A combination of biochemical, molecular, and confocal electron microscopy methods were used to determine the role of caterpillar-associated bacteria in mediating defenses in Solanum lycopersicum (tomato)...
February 7, 2017: New Phytologist
https://www.readbyqxmd.com/read/28169975/simple-urine-test-to-evaluate-adherence-to-oral-5-asa-in-teenagers-with-ulcerative-colitis-proof-of-concept
#20
Alie Dijkstra, Daan J Touw, Patrick F van Rheenen
OBJECTIVES: 5-aminosalicylic acid (5-ASA) is an important maintenance drug for patients with ulcerative colitis. A proportion of the ingested dose is excreted in the urine. Measuring 5-ASA and its metabolites in urine requires mass spectrometry, which is not widely available for this purpose. Urinary 5-ASA can be measured by colorimetry using the serum salicylic acid assay and is a surrogate marker of recent 5-ASA ingestion. We evaluated whether measuring 5-ASA in first morning voids or in random spot urine samples correctly identifies teenagers with poor adherence to oral 5-ASA...
February 4, 2017: Journal of Pediatric Gastroenterology and Nutrition
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