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azelaic acid

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https://www.readbyqxmd.com/read/29755747/structural-studies-of-crystalline-forms-of-triamterene-with-carboxylic-acid-gras-and-api-molecules
#1
Abida Rehman, Amit Delori, David S Hughes, William Jones
Pharmaceutical salt solvates (dimethyl sulfoxide, DMSO) of the drug triamterene with the coformers acetic, succinic, adipic, pimelic, azelaic and nicotinic acid and ibuprofen are prepared by liquid-assisted grinding and solvent-evaporative crystallization. The modified Δp K a rule as proposed by Cruz-Cabeza [(2012 ▸). CrystEngComm , 14 , 6362-6365] is in close agreement with the results of this study. All adducts were characterized by X-ray diffraction and thermal analytical techniques, including single-crystal X-ray diffraction, powder X-ray diffraction, differential scanning calorimetry and thermal gravimetric analysis...
May 1, 2018: IUCrJ
https://www.readbyqxmd.com/read/29713720/real-time-detection-and-monitoring-of-the-drug-resistance-of-single-myeloid-leukemia-cells-by-diffused-total-internal-reflection
#2
L Liang, Y X Jin, X Q Zhu, F L Zhou, Y Yang
Real-time detection and monitoring of the drug resistance of single cells have important significance in clinical diagnosis and therapy. Traditional methods operate a number of times for each individual concentration, and innovation is required for the design of more simple and efficient manipulation platforms with necessary higher sensitivity. Here, we have developed a novel diffused total internal reflection (TIR) method to perform drug metabolism and cytotoxicity analysis of trapped myeloid leukemia cells...
May 1, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29642641/signals-of-systemic-immunity-in-plants-progress-and-open-questions
#3
REVIEW
Attila L Ádám, Zoltán Á Nagy, György Kátay, Emese Mergenthaler, Orsolya Viczián
Systemic acquired resistance (SAR) is a defence mechanism that induces protection against a wide range of pathogens in distant, pathogen-free parts of plants after a primary inoculation. Multiple mobile compounds were identified as putative SAR signals or important factors for influencing movement of SAR signalling elements in Arabidopsis and tobacco. These include compounds with very different chemical structures like lipid transfer protein DIR1 (DEFECTIVE IN INDUCED RESISTANCE1), methyl salicylate (MeSA), dehydroabietinal (DA), azelaic acid (AzA), glycerol-3-phosphate dependent factor (G3P) and the lysine catabolite pipecolic acid (Pip)...
April 10, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29625474/gut-microbiota-composition-and-fecal-metabolic-phenotype-in-patients-with-acute-anterior-uveitis
#4
Xinyue Huang, Zi Ye, Qingfeng Cao, Guannan Su, Qingfeng Wang, Jing Deng, Chunjiang Zhou, Aize Kijlstra, Peizeng Yang
Purpose: To investigate gut microbiota composition and fecal metabolic phenotype in patients with acute anterior uveitis. Methods: Fecal DNA was extracted from 78 fecal samples (38 acute anterior uveitis (AAU) patients and 40 family members of patients or sex- and age-matched healthy controls) and then sequenced by high-throughput 16S rDNA analysis. Gas chromatographic mass spectrometry (GC-MS) based metabolomics was performed on 60 fecal samples (30 AAU patients and 30 healthy controls)...
March 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29608565/natural-allelic-variation-of-the-azi1-gene-controls-root-growth-under-zinc-limiting-condition
#5
Nadia Bouain, Santosh B Satbhai, Arthur Korte, Chorpet Saenchai, Guilhem Desbrosses, Pierre Berthomieu, Wolfgang Busch, Hatem Rouached
Zinc is an essential micronutrient for all living organisms and is involved in a plethora of processes including growth and development, and immunity. However, it is unknown if there is a common genetic and molecular basis underlying multiple facets of zinc function. Here we used natural variation in Arabidopsis thaliana to study the role of zinc in regulating growth. We identify allelic variation of the systemic immunity gene AZI1 as a key for determining root growth responses to low zinc conditions. We further demonstrate that this gene is important for modulating primary root length depending on the zinc and defence status...
April 2, 2018: PLoS Genetics
https://www.readbyqxmd.com/read/29552273/are-natural-ingredients-effective-in-the-management-of-hyperpigmentation-a-systematic-review
#6
REVIEW
Jasmine C Hollinger, Kunal Angra, Rebat M Halder
BACKGROUND: Hyperpigmentation disorders are commonly encountered in dermatology clinics. Botanical and natural ingredients have gained popularity as alternative depigmenting products. OBJECTIVE: We sought to review clinical studies evaluating the use of different natural products in treating hyperpigmentation so clinicians are better equipped to educate their patients. Specific ingredients reviewed include azelaic acid, aloesin, mulberry, licorice extracts, lignin peroxidase, kojic acid, niacinamide, ellagic acid, arbutin, green tea, turmeric, soy, and ascorbic acid...
February 2018: Journal of Clinical and Aesthetic Dermatology
https://www.readbyqxmd.com/read/29499797/a-review-of-the-current-modalities-for-the-treatment-of-papulopustular-rosacea
#7
REVIEW
Sean P McGregor, Hossein Alinia, Alyson Snyder, Sara Moradi Tuchayi, Alan Fleischer, Steven R Feldman
Papulopustular rosacea is characterized by papules and pustules in the central facial region. We review the literature surrounding the treatment of papulopustular rosacea. PubMed, EMBASE, and Cochrane (Central) databases searches of articles published from 1980 to 2015 were performed using the MeSH terms or keywords "rosacea" and "clinical trial." Additional searches were performed to include rosacea and each treatment modality used. Topical metronidazole, azelaic acid, ivermectin, and oral doxycycline have the most robust data to support their use...
April 2018: Dermatologic Clinics
https://www.readbyqxmd.com/read/29490312/case-reports-of-acne-and-homeopathy
#8
Lawrence C Nwabudike
BACKGROUND: Acne vulgaris is a self-limiting disorder of the pilosebaceous unit. The aesthetic aspect of the disorder may provoke depression and diminish the quality of life. A number of agents are used for acne treatment, e.g., retinoids, antibiotics, benzoic acid, azelaic acid, and hormones. These agents have side-effects, sometimes severe ones. CASE REPORTS: Presented are 2 cases of severe acne treated with individualized homeopathic medicines. Both patients were treated using the classical method of homeopathy, i...
2018: Complementary Medicine Research
https://www.readbyqxmd.com/read/29438284/enhancing-the-bioconversion-of-azelaic-acid-to-its-derivatives-by-response-surface-methodology
#9
Nurshafira Khairudin, Mahiran Basri, Hamid Reza Fard Masoumi, Shazwani Samson, Siti Efliza Ashari
Azelaic acid (AzA) and its derivatives have been known to be effective in the treatment of acne and various cutaneous hyperpigmentary disorders. The esterification of azelaic acid with lauryl alcohol (LA) to produce dilaurylazelate using immobilized lipase B from Candida antarctica (Novozym 435) is reported. Response surface methodology was selected to optimize the reaction conditions. A well-fitting quadratic polynomial regression model for the acid conversion was established with regards to several parameters, including reaction time and temperature, enzyme amount, and substrate molar ratios...
February 13, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29346322/regioselective-synthesis-of-procyanidin-b6-a-4-6-condensed-catechin-dimer-by-intramolecular-condensation
#10
Yusuke Higashino, Taisuke Okamoto, Kazuki Mori, Takashi Kawasaki, Masahiro Hamada, Noriyuki Nakajima, Akiko Saito
Proanthocyanidins, also known as condensed tannins or oligomeric flavonoids, are found in many edible plants and exhibit interesting biological activities. Herein, we report a new, simple method for the stereoselective synthesis of procyanidin B6, a (+)-catechin-(4-6)-(+)-catechin dimer, by Lewis acid-catalyzed intramolecular condensation. The 5- O - t -butyldimethylsilyl (TBDMS) group of 5,7,3'4'-tetra- O -TBDMS-(+)-catechin was regioselectively removed using trifluoroacetic acid, leading to the "regio-controlled" synthesis of procyanidin B6...
January 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29288957/enzyme-whole-cell-biotransformation-of-plant-oils-yeast-derived-oils-and-microalgae-fatty-acid-methyl-esters-into-n-nonanoic-acid-9-hydroxynonanoic-acid-and-1-9-nonanedioic-acid
#11
Eun-Ji Seo, Young Joo Yeon, Joo-Hyun Seo, Jung-Hoo Lee, Jhoanne P Boñgol, Yuri Oh, Jong Moon Park, Sang-Min Lim, Choul-Gyun Lee, Jin-Byung Park
Oils and fatty acids are important renewable resources provided by nature. Therefore, biotransformation of renewable oils and fatty acids into industrially relevant C9 chemicals was investigated in this study. Olive oil, soybean oil, yeast derived oil, and microalgae fatty acid methyl esters were converted into n-nonanoic acid, 9-hydroxynonanoic acid, and 1,9-nonanedioic acid by a lipase and a recombinant Escherichia coli expressing oleate hydratase, long chain secondary alcohol dehydrogenase, Baeyer-Villiger monooxygenase, long chain primary alcohol dehydrogenase, and aldehyde dehydrogenase...
March 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29277443/priming-plant-resistance-by-activation-of-redox-sensitive-genes
#12
REVIEW
Carmen González-Bosch
Priming by natural compounds is an interesting alternative for sustainable agriculture, which also contributes to explore the molecular mechanisms associated with stress tolerance. Although hosts and stress types eventually determine the mode of action of plant-priming agents, it highlights that many of them act on redox signalling. These include vitamins thiamine, riboflavin and quercetin; organic acids like pipecolic, azelaic and hexanoic; volatile organic compounds such as methyl jasmonate; cell wall components like chitosans and oligogalacturonides; H2 O2 , etc...
December 24, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/29237273/a-novel-mechanism-for-atherosclerotic-calcification-potential-resolution-of-the-oxidation-paradox
#13
Aladdin Riad, Chandrakala Aluganti Narasimhulu, Pragney Deme, Sampath Parthasarathy
AIM: In this study, we tested the hypothesis that lipid peroxide-derived dicarboxylic acids (DCAs), by virtue of their ability to bind to calcium (Ca), might be involved in atherosclerotic calcification. We determined the ability of azelaic acid (AzA) to promote calcification in human aortic smooth muscle cells (HASMCs), identified AzA in human calcified atherosclerotic lesions, and compared its levels with control and noncalcified atherosclerotic lesions. RESULTS: HASMCs efficiently converted 9-oxononanoic acid (ONA), a lipid peroxide-derived monocarboxylic aldehyde, to AzA...
January 24, 2018: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/29195984/spatial-cap-stipe-metabolomic-variations-affect-functional-components-between-brown-and-white-beech-mushrooms
#14
Yu Jin Park, Eun Sung Jung, Digar Singh, Da Eun Lee, Seunghwan Kim, Young Wook Lee, Jeong-Gu Kim, Choong Hwan Lee
The beech mushrooms have customarily been revered by oriental societies for their nutritional and health benefits. We explored the mass spectrometry (MS) based spatial metabolomic variations between parts (cap and stipe) of two beech mushroom strains (brown and white). The principal component analysis (PCA) revealed their distinct primary (cap and stipe: PC1, 25.5%; strains: PC2, 12.5%) and secondary (cap and stipe: PC1, 10.3%; strains: PC2, 7.6%) metabolite patterns. The caps were rich in amino acids, fatty acids, and N-acetylglucosamine with higher protein and nitrogen contents...
December 2017: Food Research International
https://www.readbyqxmd.com/read/29187153/similar-but-different-structurally-related-azelaic-acid-and-hexanoic-acid-trigger-differential-metabolomic-and-transcriptomic-responses-in-tobacco-cells
#15
Arnaud T Djami-Tchatchou, Efficient N Ncube, Paul A Steenkamp, Ian A Dubery
BACKGROUND: Plants respond to various stress stimuli by activating an enhanced broad-spectrum defensive ability. The development of novel resistance inducers represents an attractive, alternative crop protection strategy. In this regard, hexanoic acid (Hxa, a chemical elicitor) and azelaic acid (Aza, a natural signaling compound) have been proposed as inducers of plant defense, by means of a priming mechanism. Here, we investigated both the mode of action and the complementarity of Aza and Hxa as priming agents in Nicotiana tabacum cells in support of enhanced defense...
November 29, 2017: BMC Plant Biology
https://www.readbyqxmd.com/read/29091380/real-world-efficacy-of-azelaic-acid-15-gel-for-the-reduction-of-inflammatory-lesions-of-rosacea
#16
P J Wirth, M H Henderson Berg, N Sadick
Approximately 16 million Americans have rosacea, an inflammatory cutaneous disorder with central facial erythema, papules, pustules, telangiectasia, flushing, and swelling being among the more commonly recognized features. Overexpression of cathelicidin peptide LL-37 has been implicated in the pathophysiology of rosacea. Azelaic acid has been found to inhibit the pathologic expression of cathelicidin, as well as the hyperactive protease activity that cleaves cathelicidin into LL-37. Given these findings, a small prospective, open-label, interventional trial was undertaken to assess the effects of azelaic acid 15% gel on inflammatory lesions of papulopustular rosacea in a real-world setting...
November 2017: Skin Therapy Letter
https://www.readbyqxmd.com/read/29054673/fluvial-biofilms-exposed-to-desiccation-and-pharmaceutical-pollution-new-insights-using-metabolomics
#17
Albert Serra-Compte, Natàlia Corcoll, Belinda Huerta, Sara Rodríguez-Mozaz, Sergi Sabater, Damià Barceló, Diana Álvarez-Muñoz
In many arid and semi-arid systems, biological communities in river ecosystems are submitted to flow interruption and desiccation, as well as to the impact of urban wastewaters. In this work, we studied (using a LC-LTQ-Orbitrap) the metabolomic response of biofilm communities exposed to both hydrological and chemical stressors. Fluvial biofilms were exposed to a mixture of 9 pharmaceuticals at a total concentration of 5000ng/L (mimicking concentrations and compounds found in polluted aquatic environments) and/or to seven days of desiccation, under laboratory conditions...
October 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29040817/potential-for-mcl-pha-production-from-nonanoic-and-azelaic-acids
#18
James Gillis, Kenton Ko, Juliana A Ramsay, Bruce A Ramsay
Greater than 65% of canola and high-oleic soy oil fatty acids is oleic acid, which is readily converted to nonanoic (NA) and azelaic (AzA) acids by ozonolysis. NA is an excellent substrate for medium-chain-length polyhydroxyalkanoate (mcl-PHA) production but AzA has few uses. Pseudomonas citronellolis DSM 50332 and Pseudomonas fluorescens ATCC 17400, both able to produce mcl-PHA from fatty acids and to grow on AzA as the sole source of carbon and energy, were assessed for the accumulation of mcl-PHA from AzA and NA...
January 2018: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/28990936/olfactory-receptor-544-reduces-adiposity-by-steering-fuel-preference-toward-fats
#19
Chunyan Wu, Su Hyeon Hwang, Yaoyao Jia, Joobong Choi, Yeon-Ji Kim, Dahee Choi, Duleepa Pathiraja, In-Geol Choi, Seung-Hoi Koo, Sung-Joon Lee
Olfactory receptors (ORs) are present in tissues outside the olfactory system; however, the function of these receptors remains relatively unknown. Here, we determined that olfactory receptor 544 (Olfr544) is highly expressed in the liver and adipose tissue of mice and regulates cellular energy metabolism and obesity. Azelaic acid (AzA), an Olfr544 ligand, specifically induced PKA-dependent lipolysis in adipocytes and promoted fatty acid oxidation (FAO) and ketogenesis in liver, thus shifting the fuel preference to fats...
November 1, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28952257/-chemical-constituents-from-fresh-tubers-of-dioscorea-bulbifera
#20
Jin-Song Liu, Wei-Na Gao, Juan Zheng, Guo-Kai Wang, Qing-Shan Yang
Eighteen compounds were isolated from the 95% ethanol extract of fresh tubers of Dioscorea bulbifera by column chromatography over silica gel,Sephadex LH-20, and ODS. Their structures were elucidated by spectroscopic data analysis as 6-hydroxy-2,10,10-trimethoxy-anthracen-9-one(1), diosgenin (2), stigmasterol(3), 3, 7-dimethoxy-5, 3', 4'-trihydroxyflavone(4), 2, 7-dihydroxy-3, 4-dimethoxyphenanthrene(5), 3, 7-dihydroxy-2, 4-dimethoxy phenanthrene(6), 2, 7-dihydroxy-4-methoxyphenanthrene (7), 2, 7-dihydroxy-3, 4-dimethoxy-9, 10-dihydroxy phenanthrene(8), azelaic acid (9), 8-epidiosbulbin E acetate (10), 1, 7-bis-(4-hydroxyphenyl)-4E, 6E-heptadien-3-one(11), diosbulbin B(12), pentacosanoic acid 2', 3'-dihydroxypropyl ester(13), 2, 7-dihydroxy-4-methoxy-9, 10-dihydroxy-phenanthrene (14), 1, 7-bis-(4-hydroxyphenyl)-1E, 4E, 6E-heptatrien-3-one (15), 6-ethoxy-1H-pyrimidine-2, 4-dione (16), 3, 5, 4'-trihydroxy-bibenzyl (17), and diosbulbin F (18)...
February 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
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