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Arginine chloride

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https://www.readbyqxmd.com/read/29770514/influence-of-heat-treatment-on-loading-of-polymeric-multilayer-microcapsules-with-rhodamine-b
#1
Alexey V Ermakov, Olga A Inozemtseva, Dmitry A Gorin, Gleb B Sukhorukov, Sergei Belyakov, Maria N Antipina
Layer-by-layer assembled polymeric multilayer capsules (PMC) of micrometer sizes are permeable for molecules below 1 KDa; therefore, the efficacy of such capsules in the delivery of low molecular weight water soluble bioactive compounds and drugs is frequently challenged. Thermally induced contraction of hollow PMC is explored here to enhance their loading efficacy with model compound, fluorescent rhodamine B (RhB). Four bilayered capsules obtained of poly(diallyldimethylammonium chloride)/polystyrene sulfonate ([PDADMAC/PSS]4 ) or poly-l-arginine/dextran sulfate ([PARG/DS]4 ) on sacrificial CaCO3 spherical microparticles are postloaded with RhB at ambient or elevated temperatures...
May 16, 2018: Macromolecular Rapid Communications
https://www.readbyqxmd.com/read/29748816/epicatechin-s-cardiovascular-protective-effects-are-mediated-via-opioid-receptors-and-nitric-oxide
#2
Kirsty MacRae, Kylie Connolly, Rebecca Vella, Andrew Fenning
PURPOSE: Cardiovascular disease is the leading cause of mortality globally. Epicatechin has previously been shown to improve vascular responses and possess cardioprotective properties. However, the mechanisms underpinning these cardiotropic outcomes remain unknown. The aim of this study was to further identify epicatechin's mechanism of action in the cardiovasculature. METHODS: The effects of epicatechin on isolated rat conduit arteries, resistance vessels and cardiac electrophysiology were investigated on resting tension and precontracted vessels and cardiac action potential parameters, both in the presence and in the absence of various antagonists...
May 10, 2018: European Journal of Nutrition
https://www.readbyqxmd.com/read/29739865/2-chlorofatty-acids-lipid-mediators-of-neutrophil-extracellular-trap-formation
#3
Elisa N D Palladino, Lalage A Katunga, Grant R Kolar, David A Ford
Neutrophils form neutrophil extracellular traps (NETs), which have been implicated in microcirculatory plugging. NET formation (NETosis) involves the fusion of granule and nuclear contents, which are then released in the extracellular space. Myeloperoxidase (MPO) plays a major role in NETosis leading to the dissociation of DNA from histones. During neutrophil activation, MPO is released and activated to convert hydrogen peroxide and chloride to hypochlorous acid (HOCl). HOCl targets plasmalogens leading to the production of the chlorinated lipids, 2-chlorofatty aldehyde (2-ClFALD) and 2-chlorofatty acid (2-ClFA)...
May 8, 2018: Journal of Lipid Research
https://www.readbyqxmd.com/read/29720912/use-of-arginine-hydrochloride-in-the-treatment-of-metabolic-alkalosis-or-hypochloremia-in-pediatric-patients
#4
Caroline M Sierra, Elvin A Hernandez, Kristine A Parbuoni
OBJECTIVES: Dosing of arginine for treatment of hypochloremia or metabolic alkalosis is laborious and has inherent variability in dose selection. The primary objective of this study was to determine the efficacy of arginine in the treatment of metabolic alkalosis and hypochloremia. Secondary objectives were to determine an optimal dose, route, and frequency for arginine administration in the treatment of these conditions. METHODS: This single center, retrospective, descriptive study was conducted in children who received arginine for treatment of hypochloremia or metabolic alkalosis...
March 2018: Journal of Pediatric Pharmacology and Therapeutics: JPPT: the Official Journal of PPAG
https://www.readbyqxmd.com/read/29717719/orthorhombic-lysozyme-crystallization-at-acidic-ph-values-driven-by-phosphate-binding
#5
Marina Plaza-Garrido, M Carmen Salinas-Garcia, Ana Camara-Artigas
The structure of orthorhombic lysozyme has been obtained at 298 K and pH 4.5 using sodium chloride as the precipitant and in the presence of sodium phosphate at a concentration as low as 5 mM. Crystals belonging to space group P21 21 21 (unit-cell parameters a = 30, b = 56, c = 73 Å, α = β = γ = 90.00°) diffracted to a resolution higher than 1 Å, and the high quality of these crystals permitted the identification of a phosphate ion bound to Arg14 and His15. The binding of this ion produces long-range conformational changes affecting the loop containing Ser60-Asn74...
May 1, 2018: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/29684712/high-salt-intake-enhances-swim-stress-induced-pvn-vasopressin-cell-activation-and-active-stress-coping
#6
N C Mitchell, T L Gilman, L C Daws, G M Toney
PURPOSE: Stress contributes to many psychiatric disorders; however, responsivity to stressors can vary depending on previous or current stress exposure. Relatively innocuous heterotypic (differing in type) stressors can summate to result in exaggerated neuronal and behavioral responses. Here we investigated the ability of prior high dietary sodium chloride (salt) intake, a dehydrating osmotic stressor, to enhance neuronal and behavioral responses of mice to an acute psychogenic swim stress (SS)...
April 6, 2018: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29617899/in-ovo-applications-in-poultry-a-review
#7
E D Peebles
The various methods employed for the in ovo administration of different materials for promoting the health and productivity of poultry are discussed in this review article. The amnion has proven to be an effective site for injection and the timing of in ovo injection has commonly occurred at transfer. However, the volumes and dosages or concentrations of the materials administered vary depending on bird type, egg size, timing and site of injection, incubation system and regimen, and the type of material. Both manual and automated injections have been shown to be effective...
March 28, 2018: Poultry Science
https://www.readbyqxmd.com/read/29552696/mechanism-of-vasorelaxation-induced-by-3-hydroxy-5-6-7-4-tetramethoxyflavone-in-the-rats-aortic-ring-assay
#8
Chu Shan Tan, Mun Fei Yam
Previous studies have demonstrated that 3'-hydroxy-5,6,7,4'-tetramethoxyflavone (TMF) content in Orthosiphon stamineus fractions correlate with its vasorelaxation activity. Even with the availability of previous studies, there is still very little information on the vasorelaxation effect of TMF, and few scientific studies have been carried out. Therefore, the present study was designed to investigate the vasorelaxation activity and mechanism of action of the TMF. The vasorelaxation activity and the underlying mechanisms of TMF were evaluated on thoracic aortic rings isolated from Sprague Dawley rats...
March 19, 2018: Naunyn-Schmiedeberg's Archives of Pharmacology
https://www.readbyqxmd.com/read/29505241/expanding-the-coverage-of-the-metabolome-with-nitrogen-based-nmr
#9
Fatema Bhinderwala, Samantha Lonergan, Jade Woods, Chunyi Zhou, Paul D Fey, Robert Powers
Isotopically labeling a metabolite and tracing its metabolic fate has provided invaluable insights about the role of metabolism in human diseases in addition to a variety of other issues. 13 C-labeled metabolite tracers or unlabeled 1 H-based NMR experiments are currently the most common application of NMR to metabolomics studies. Unfortunately, the coverage of the metabolome has been consequently limited to the most abundant carbon-containing metabolites. To expand the coverage of the metabolome and enhance the impact of metabolomics studies, we present a protocol for 15 N-labeled metabolite tracer experiments that may also be combined with routine 13 C tracer experiments to simultaneously detect both 15 N- and 13 C-labeled metabolites in metabolic samples...
April 3, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29492504/interfacial-electrostatics-of-poly-vinylamine-hydrochloride-poly-diallyldimethylammonium-chloride-poly-l-lysine-and-poly-l-arginine-interacting-with-lipid-bilayers
#10
A C McGeachy, N Dalchand, E R Caudill, T Li, M Doğangün, L L Olenick, H Chang, J A Pedersen, F M Geiger
Charge densities of cationic polymers adsorbed to lipid bilayers are estimated from second harmonic generation (SHG) spectroscopy and quartz crystal microbalance with dissipation monitoring (QCM-D) measurements. The systems surveyed included poly(vinylamine hydrochloride) (PVAm), poly(diallyldimethylammonium chloride) (PDADMAC), poly-l-lysine (PLL), and poly-l-arginine (PLR), as well as polyalcohol controls. Upon accounting for the number of positive charges associated with each polyelectrolyte, the binding constants and apparent free energies of adsorption as estimated from SHG data are comparable despite differences in molecular masses and molecular structure, with ΔGads values of -61 ± 2, -58 ± 2, -57 ± 1, -52 ± 2, -52 ± 1 kJ mol-1 for PDADMAC400, PDADMAC100, PVAm, PLL, and PLR, respectively...
April 25, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29483626/vasopressin-secreting-neurons-derived-from-human-embryonic-stem-cells-through-specific-induction-of-dorsal-hypothalamic-progenitors
#11
Koichiro Ogawa, Hidetaka Suga, Chikafumi Ozone, Mayu Sakakibara, Tomiko Yamada, Mayuko Kano, Kazuki Mitsumoto, Takatoshi Kasai, Yu Kodani, Hiroshi Nagasaki, Naoki Yamamoto, Daisuke Hagiwara, Motomitsu Goto, Ryoichi Banno, Yoshihisa Sugimura, Hiroshi Arima
Arginine-vasopressin (AVP) neurons exist in the hypothalamus, a major region of the diencephalon, and play an essential role in water balance. Here, we established the differentiation method for AVP-secreting neurons from human embryonic stem cells (hESCs) by recapitulating in vitro the in vivo embryonic developmental processes of AVP neurons. At first, the differentiation efficiency was improved. That was achieved through the optimization of the culture condition for obtaining dorsal hypothalamic progenitors...
February 26, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29436285/m%C3%A3-ni%C3%A3-re-s-disease-pathophysiology-endolymphatic-sac-immunohistochemical-study-of-aquaporin-2-v2r-vasopressin-receptor-nkcc2-and-trpv4
#12
Marc-Henri Asmar, Louis Gaboury, Issam Saliba
Objectives Endolymphatic sac (ELS) pathophysiology in Ménière's disease (MD) remains poorly understood. We identified from the literature a group of proteins expressed on the ELS and involved in endolymph volume regulation: aquaporin-2 (AQP2), vasopressin receptor V2R, sodium potassium chloride cotransporter 2 (NKCC2), and transient receptor potential cation channel V4 (TRPV4). Our objective was to determine whether their ELS expression was altered in MD, to better understand the pathophysiology of endolymphatic hydrops...
April 2018: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29400329/formaldehyde-aminoguanidine-condensation-and-aminoguanidine-self-condensation-products-syntheses-crystal-structures-and-characterization
#13
Elena A Buvaylo, Vladimir N Kokozay, Nataliia Yu Strutynska, Olga Yu Vassilyeva, Brian W Skelton
Guanidine is the functional group on the side chain of arginine, one of the fundamental building blocks of life. In recent years, a number of compounds based on the aminoguanidine (AG) moiety have been described as presenting high anticancer activities. The product of condensation between two molecules of AG and one molecule of formaldehyde was isolated in the protonated form as the dinitrate salt (systematic name: 2,8-diamino-1,3,4,6,7,9-hexaazanona-1,8-diene-1,9-diium dinitrate), C3 H14 N8 2+ ·2NO3 - , (I)...
February 1, 2018: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/29397093/effects-of-aqueous-leaf-extract-of-tridax-procumbens-on-contractile-activity-of-corpus-cavernosum-in-n-nitro-l-arginine-methyl-ester-induced-hypertensive-male-rats
#14
Shakiru Ademola Salami, Hussein Mofomosara Salahdeen, Evangelshane Chukwudubem Ugbebor, Babatunde Adekunle Murtala, Yinusa Raji
OBJECTIVE: This study investigated the effects of aqueous leaf extract of Tridax procumbens (ALETP) on contractile activity of corpus cavernosum in N-nitro-l-arginine methyl ester (l-NAME)-induced hypertensive male rats. METHODS: Twenty normal, adult male rats (130-150 g) were divided into four groups of five rats each. Group I (control) was given normal saline (0.6 mL/kg) and group II was given l-NAME (40 mg/kg) for 6 weeks. Groups III and IV also received l-NAME (40 mg/kg) for 6 weeks but were further co-treated with 100 and 200 mg/kg of ALETP, respectively, from week 4 to week 6...
January 2018: Journal of Integrative Medicine
https://www.readbyqxmd.com/read/29334931/in-vitro-antibacterial-and-antibiotic-modifying-activity-of-crude-extract-fractions-and-3-4-7-trihydroxyflavone-from-myristica-fragrans-houtt-against-mdr-gram-negative-enteric-bacteria
#15
Joachim K Dzotam, Ingrid Konga Simo, Gabin Bitchagno, Ilhami Celik, Louis P Sandjo, Pierre Tane, Victor Kuete
BACKGROUND: Nutmeg is the seed kernel inside the fruit of Myristica fragrans Houtt. (Myristicaceae). It possesses various pharmacological activities but is used in Cameroon only for its flavor in making cakes. The present study thus aimed to investigate the in vitro antibacterial activity and antibiotic modifying activities of crude seed kernel methanol extract (MFS), fractions (MFSa-e) as well as 3',4',7-trihydroxyflavone from Myristica fragrans against a panel of multi-drug resistant (MDR) Gram-negative bacteria...
January 15, 2018: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/29285091/treatment-of-acute-intermittent-porphyria-during-pregnancy-and-posterior-reversible-encephalopathy-syndrome-after-delivery-a-case-report
#16
Jian Zhang, Yiting Hu, Jimin Zheng, Juncha Gao, Hongtao Hou, Na Liu, Yuzhen Wang
Acute intermittent porphyria (AIP) is a rare inherited disorder of heme metabolism. It has the ability to trigger posterior reversible encephalopathy syndrome (PRES), a rare acute neurologic condition that is characterized by acute neurological symptoms. Pregnancy may induce AIP attacks. The present report describes the case of a pregnant woman with AIP. The patient was treated with heme-arginate during pregnancy and successfully delivered a healthy baby. Following delivery, the patient presented with PRES and experienced generalized seizures...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29278321/design-and-evaluation-of-lyophilized-fibroblast-growth-factor-21-and-its-protection-against-ischemia-cerebral-injury
#17
Xuanxin Yang, Qi Hui, Bingjie Yu, Zhen Huang, PeiPei Zhou, Panfeng Wang, Zhitao Wang, Shucai Pang, Jinghang Li, Hanshi Wang, Li Lin, Xiaokun Li, Xiaojie Wang
This study investigated the effect of the excipients, including glycine, mannitol, arginine, trehalose, sorbitol, and poloxamer188, on the stability of recombinant human fibroblast growth factor 21(FGF21) during the process of lyophilization and storage. The glass transition temperature (Tg ), protein secondary structure, aggregation ratio, and the bioactivity of lyophilized FGF21 were measured. We furthermore investigated the effect of FGF21 against ischemia cerebral injury using the middle cerebral artery occlusion (MCAO) model in rats...
February 21, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29178705/effectiveness-of-dentifrices-with-new-formulations-for-the-treatment-of-dentin-hypersensitivity-a-meta-analysis
#18
Christina Grünberg, Florian Bauer, Alexander Crispin, Michael Jakob, Reinhard Hickel, Miriam E Draenert
PURPOSE: This meta-analysis was conducted to evaluate if strontium-acetate- and arginine-containing dentifrices can significantly reduce dentin hypersensitivity (DH). METHODS: A systematic literature search was performed. The investigation period was from 2006 to 2015 with the search term "dentin hypersensitivity". Nine original articles were relevant. A network meta-analysis of combined z scores was performed. Pooled results from random effects models with their 95% confidence intervals are reported...
August 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29148979/role-of-caftaric-acid-in-lead-associated-nephrotoxicity-in-rats-via-antidiuretic-antioxidant-and-anti-apoptotic-activities
#19
Khaled M M Koriem, Mahmoud S Arbid
Background Lead is a toxic metal that is widely distributed in the environment where caftaric acid (CA) is the ester form of caffeic acid where CA is the major dietary polyphenol present in various foods and beverages. The aim of this study was to evaluate the effect of CA in lead acetate (LA)-associated nephrotoxicity through antidiuretic, antioxidant and anti-apoptotic activities. Methods Forty-eight male albino rats divided into six equal groups; group 1 control injected intraperitoneally (ip) with saline (1 mL/kg of bw) over two weeks period, group 2 injected ip with CA (80 mg/kg of bw) over two weeks period, groups 3, 4, 5 and 6 injected ip with 100 μmol/kg of bw LA over two weeks period where groups 4, 5 & 6 co-injected ip with 1-deamino-8-D-arginine vasopressin (dDAVP) drug (1 mg/kg of bw), CA (40 mg/kg of bw), and CA (80 mg/kg of bw), respectively...
November 17, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/29136777/anti-hypertensive-and-vasodilatory-effects-of-amended-banxia-baizhu-tianma-tang
#20
Chu Shan Tan, Yean Chun Loh, Chiew Hoong Ng, Yung Sing Ch'ng, Mohd Zaini Asmawi, Mariam Ahmad, Mun Fei Yam
Although Banxia Baizhu Tianma Tang (BBT) has been long administered for hypertensive treatment in Traditional Chinese Medicine (TCM), the ratio of the herbal components that makes up the formulation has not been optimized with respect to the anti-hypertensive effect that it inherently possesses. A newly amended BBT (ABBT) formulation was developed using the evidence-based approach of orthogonal stimulus-response compatibility model. The ABBT showed enhanced therapeutic effect while maintaining its traditional theoretical approach rooted in TCM...
January 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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