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Arginine chloride

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https://www.readbyqxmd.com/read/29148979/role-of-caftaric-acid-in-lead-associated-nephrotoxicity-in-rats-via-antidiuretic-antioxidant-and-anti-apoptotic-activities
#1
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
#2
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...
November 7, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29028548/enhanced-antitumor-efficacy-of-arginine-modified-amphiphilic-nanoparticles-co-delivering-doxorubicin-and-isur-pdna-via-the-multiple-synergistic-effect
#3
Yudong Song, Cui Tang, Chunhua Yin
Arginine and α-tocopherol succinate (α-TOS) double grafted N-trimethyl chitosan chloride (TMC) nanoparticles (TAS NPs) were designed and developed for effective co-delivery of doxorubicin (DOX) and Survivin shRNA-expressing pDNA (iSur-pDNA). With DOX loading into the hydrophobic core and iSur-pDNA combining to the hydrophilic shell, TAS/DOX/pDNA NPs demonstrated favorable structural stability and sustained release properties in vitro. With the special non-clathrin-dependent endocytosis, TAS/DOX/pDNA NPs presented higher cellular uptake and mainly distributed in ER and Golgi rather than lysosomes following internalization...
October 4, 2017: Biomaterials
https://www.readbyqxmd.com/read/29027818/effects-of-nesfatin-1-on-atrial-contractility-and-thoracic-aorta-reactivity-in-male-rats
#4
Ayşe Barutcigil, Arda Tasatargil
BACKGROUND: This study aimed to examine the effects of nesfatin-1 on thoracic aorta vasoreactivity and to investigate the inotropic and chronotropic effects of nesfatin-1 on the spontaneous contractions of the isolated rat atria. METHODS: Isolated right atria and thoracic aorta were used in organ baths. The reactivity of the thoracic aorta was evaluated by potassium chloride (KCl), phenylephrine (Phe), acetylcholine (ACh), and sodium nitroprusside (SNP). The effects of nesfatin-1 on the spontaneous contractions of the rat atria were also examined...
October 13, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28987270/involvement-of-nitrergic-system-in-anticonvulsant-effect-of-zolpidem-in-lithium-pilocarpine-induced-status-epilepticus-evaluation-of-inos-and-cox-2-genes-expression
#5
Seyyed Majid Eslami, Maryam Ghasemi, Taraneh Bahremand, Majid Momeny, Mahdi Gholami, Mohammad Sharifzadeh, Ahmad Reza Dehpour
This study aims to investigate the role of zolpidem in lithium-pilocarpine induced status epilepticus (SE) and probable mechanisms involved in seizure threshold alteration. In the present study, lithium chloride (127mg/kg) was administered 20h prior to pilocarpine (60mg/kg) to induce SE in adult male Wistar rats. Different doses of zolpidem (0.1, 1, 2, 5, 10mg/kg) were injected 30min before pilocarpine administration. Furthermore, to find out whether nitric oxide (NO) plays a role in the observed effect, L-arginine and L-NAME were injected 15min before zolpidem...
October 4, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28943490/the-curcumin-induced-vasorelaxation-in-rat-superior-mesenteric-arteries
#6
Han Zhang, Huanhuan Liu, Yulong Chen, Yan Zhang
BACKGROUND: Curcumin (Cur) is a natural lipophilic polyphenol compound extracted from the rhizome of turmeric. Recently, protective effect of Cur on cardiovascular system is paid close attention. Some researches demonstrated that Cur could induce vascular relaxation in many arterial beds. However, relaxant effect of Cur on rat superior mesenteric artery is not clear. This present study will investigate the vasorelaxant effect of Cur on rat superior mesenteric arteries and the mechanisms involved...
September 22, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28900851/tributyltin-chloride-disrupts-aortic-vascular-reactivity-and-increases-reactive-oxygen-species-production-in-female-rats
#7
Carolina Falcão Ximenes, Samya Mere Lima Rodrigues, Priscila Lang Podratz, Eduardo Merlo, Julia Fernandez Puñal de Araújo, Lívia Carla Melo Rodrigues, Juliana Barbosa Coitinho, Dalton Valentim Vassallo, Jones Bernardes Graceli, Ivanita Stefanon
Organotin compounds, such as tributyltin (TBT), are environment contaminants that induce bioaccumulation and have potential toxic effects on marine species and mammals. TBT have been banned by the International Maritime Organization in 2003. However, the assessment of butyltin and metal contents in marine sediments has demonstrated high residual levels of TBT in some cases exceeding 7000 ng Sn g(-1). The acceptable daily intake (ADI) level for TBT established by the World Health Organization is 0.5 μg/kg bw/day is based on genotoxicity, reproduction, teratogenicity, immunotoxicity, and mainly neurotoxicity...
November 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28832263/vasorelaxant-properties-of-vernonia-amygdalina-ethanol-extract-and-its-possible-mechanism
#8
Yung Sing Ch'ng, Yean Chun Loh, Chu Shan Tan, Mariam Ahmad, Mohd Zaini Asmawi, Wan Maznah Wan Omar, Mun Fei Yam
CONTEXT: Vernonia amygdalina Del. (VA) (Asteraceae) is commonly used to treat hypertension in Malaysia. OBJECTIVE: This study investigates the vasorelaxant mechanism of VA ethanol extract (VAE) and analyzes its tri-step FTIR spectroscopy fingerprint. MATERIALS AND METHODS: Dried VA leaves were extracted with ethanol through maceration and concentrated using rotary evaporator before freeze-dried. The vasorelaxant activity and the underlying mechanisms of VAE using the cumulative concentration (0...
December 2017: Pharmaceutical Biology
https://www.readbyqxmd.com/read/28758834/preferential-interactions-of-trehalose-l-arginine-hcl-and-sodium-chloride-with-therapeutically-relevant-igg1-monoclonal-antibodies
#9
Chaitanya Sudrik, Theresa Cloutier, Phuong Pham, Hardeep S Samra, Bernhardt L Trout
Preferential interactions of weakly interacting formulation excipients govern their effect on the equilibrium and kinetics of several reactions of protein molecules in solution. Using vapor pressure osmometry, we characterized the preferential interactions of commonly used excipients trehalose, L-arginine.HCl and NaCl with three therapeutically-relevant, IgG1 monoclonal antibodies that have similar size and shape, but differ in their surface hydrophobicity and net charge. We further characterized the effect of these excipients on the reversible self-association, aggregation and viscosity behavior of these antibody molecules...
October 2017: MAbs
https://www.readbyqxmd.com/read/28698124/the-role-of-phosphatidylinositol-3-oh-kinase-pi3-kinase-and-respiratory-burst-enzymes-in-the-omim-bf4-mediated-toxic-mode-of-action-in-mussel-hemocytes
#10
Alexia Belavgeni, Stefanos Dailianis
The present study investigates the role of phosphatidylinositol-3-OH-kinase (PI3-kinase) and respiratory burst enzymes, NADPH oxidase and NO synthase, in the 1-methyl-3-octylimidazolium tetrafluoroborate ([omim][BF4])-mediated toxic mode of action in mussel hemocytes. Specifically, cell viability (using the neutral red uptake assay) was primarily tested in hemocytes treated with different concentrations of [omim][BF4] (0.1-10 mg L(-1)) and thereafter [omim][BF4]-mediated oxidative (in terms of superoxide anions/O2(-) and nitric oxide/NO generation, as well as the enhancement of lipid peroxidation by-products, in terms of malondialdehyde/MDA) and genotoxic (in terms of DNA damage) effects were determined in hemocytes treated with 1 mg L(-1) [omim][BF4]...
July 8, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28578052/arginine-prevents-thermal-aggregation-of-hen-egg-white-proteins
#11
Taehun Hong, Kazuki Iwashita, Akihiro Handa, Kentaro Shiraki
The control of aggregation and solubilization of hen egg white protein (HEWP) is an important issue for industrial applications of one of the most familiar food protein sources. Here, we investigated the effects of edible amino acids on heat-induced aggregation of HEWP. The addition of 0.6M arginine (Arg) completely suppressed the formation of insoluble aggregates of 1mgmL(-1) HEWP following heat treatment, even at 90°C for 20min. In contrast, lysine (Lys), glycine (Gly), and sodium chloride (NaCl) did little to suppress the aggregation of HEWP under the same conditions...
July 2017: Food Research International
https://www.readbyqxmd.com/read/28436051/a-novel-mass-spectrometry-based-method-for-simultaneous-determination-of-asymmetric-and-symmetric-dimethylarginine-l-arginine-and-l-citrulline-optimized-for-lc-ms-tof-and-lc-ms-ms
#12
Jerzy Wiśniewski, Mariusz G Fleszar, Joanna Piechowicz, Małgorzata Krzystek-Korpacka, Angelika Chachaj, Andrzej Szuba, Katarzyna Lorenc-Kukula, Leszek Masłowski, Wojciech Witkiewicz, Andrzej Gamian
Nitric oxide (NO) is a regulatory molecule involved in many biological processes. NO is produced by nitric oxide synthase by conversion of l-arginine to l-citrulline. l-Arginine methylated derivatives, asymmetric and symmetric dimethylarginines (asymmetric dimethylarginine, ADMA, and symmetric dimethylarginine, SDMA), regulate l-arginine availability and the activity of nitric oxide synthase. As such, they have been frequently investigated as potential biomarkers in pathologies associated with dysfunctions in NO synthesis...
November 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28428760/the-variation-tendency-of-polyamines-forms-and-components-of-polyamine-metabolism-in-zoysiagrass-zoysia-japonica-steud-to-salt-stress-with-exogenous-spermidine-application
#13
Shucheng Li, Linlin Cui, Yujuan Zhang, Yunwen Wang, Peisheng Mao
To understand dynamic changes in polyamines (PAs) forms and components of polyamine metabolism in zoysiagrass (Zoysia japonica Steud.) response to salt stress with exogenous spermidine (Spd) application, two Chinese zoysia cultivars, z081 and z057, were exposed to sodium chloride stress for 2, 4, 6, and 8 days. The z057 cultivar possesses higher salinity tolerance than the z081 cultivar. Salt stress decreased the zoysiagrass fresh weight (FW) and increased free Spd and spermine (Spm) levels and soluble and insoluble putrescine (Put), Spd and Spm levels in both cultivars...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28418601/two-arginine-residues-in-the-cooh-terminal-of-human-%C3%AE-defensin-3-constitute-an-essential-motif-for-antimicrobial-activity-and-il-6-production
#14
Yoko Sakagami-Yasui, Yoshinori Shirafuji, Osamu Yamasaki, Shin Morizane, Toshihisa Hamada, Hiroshi Umemura, Keiji Iwatsuki
Human β-defensin-3 (HBD-3) possesses antimicrobial activities and the potential to induce proinflammatory cytokines. HBD-3 contains a unique motif of two arginine residues (Arg or R) in the COOH-terminal region. To understand the bioactive properties of the Arg residues of HBD-3, we examined antimicrobial activities against Staphylococcus aureus and Pseudomonas aeruginosa using synthetic HBD-2, HBD-3 and two variant peptides of HBD-3: the Arg-truncated variant designated desR HBD-3 and NRR HBD-3, in which both Arg residues were shifted to the N-terminal region...
November 2017: Experimental Dermatology
https://www.readbyqxmd.com/read/28380294/improving-permeation-and-antifouling-performance-of-polyamide-nanofiltration-membranes-through-the-incorporation-of-arginine
#15
Lin Fan, Qi Zhang, Zhen Yang, Runnan Zhang, Ya-Nan Liu, Mingrui He, Zhongyi Jiang, Yanlei Su
Inspired by the hydrophilicity effect of arginine (Arg) in water channel aquaporins (AQPs), Arg was incorporated into the polyamide layer during interfacial polymerization to enhance the permeation and antifouling performance of the nanofiltration (NF) membranes. Due to the presence of active amine groups, Arg became another aqueous phase monomer along with piperazine (PIP) to react with trimesoyl chloride (TMC) during interfacial polymerization, which was incorporated into the polyamide network. The resulting polyamide NF membranes were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), atomic force microscopy (AFM), static water contact angle, zeta potential, and positron annihilation spectroscopy (PAS) measurement...
April 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28161542/vasorelaxation-effect-of-glycyrrhizae-uralensis-through-the-endothelium-dependent-pathway
#16
Chu Shan Tan, Yung Sing Ch'ng, Yean Chun Loh, Mohd Zaini Asmawi, Mariam Ahmad, Mun Fei Yam
ETHNOPHARMACOLOGICAL RELEVANCE: Glycyrrhiza uralensis (G. uralensis) is one of the herbs used in traditional Chinese medicine (TCM) and serves as an envoy medicinal. Since G. uralensis plays a major role in the anti-hypertensive TCM formulae, we believe that G. uralensis might possess vasorelaxation activity. AIM OF THE STUDY: This study is designed to investigate the vasorelaxation effect of G. uralensis from various extracts and to study its pharmacology effect...
March 6, 2017: Journal of Ethnopharmacology
https://www.readbyqxmd.com/read/28134709/nephrogenic-diabetes-insipidus
#17
D Bockenhauer, Daniel G Bichet
PURPOSE OF REVIEW: In nephrogenic diabetes insipidus (NDI), the kidney is unable to concentrate urine despite elevated concentrations of the antidiuretic hormone arginine-vasopressin. In congenital NDI, polyuria and polydipsia are present from birth and should be immediately recognized to avoid severe episodes of dehydration. Unfortunately, NDI is still often recognized late after a 'diagnostic odyssey' involving false leads and dangerous treatments.Once diagnosed, appropriate treatment can be started...
April 2017: Current Opinion in Pediatrics
https://www.readbyqxmd.com/read/28096462/unique-contributions-of-an-arginine-side-chain-to-ligand-recognition-in-a-glutamate-gated-chloride-channel
#18
Timothy Lynagh, Vitaly V Komnatnyy, Stephan A Pless
Glutamate recognition by neurotransmitter receptors often relies on Arg residues in the binding site, leading to the assumption that charge-charge interactions underlie ligand recognition. However, assessing the precise chemical contribution of Arg side chains to protein function and pharmacology has proven to be exceedingly difficult in such large and complex proteins. Using the in vivo nonsense suppression approach, we report the first successful incorporation of the isosteric, titratable Arg analog, canavanine, into a neurotransmitter receptor in a living cell, utilizing a glutamate-gated chloride channel from the nematode Haemonchus contortus Our data unveil a surprisingly small contribution of charge at a conserved arginine side chain previously suggested to form a salt bridge with the ligand, glutamate...
March 3, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28074656/atomistic-modeling-of-ion-conduction-through-the-voltage-sensing-domain-of-the-shaker-k-ion-channel
#19
Mona L Wood, J Alfredo Freites, Francesco Tombola, Douglas J Tobias
Voltage-sensing domains (VSDs) sense changes in the membrane electrostatic potential and, through conformational changes, regulate a specific function. The VSDs of wild-type voltage-dependent K(+), Na(+), and Ca(2+) channels do not conduct ions, but they can become ion-permeable through pathological mutations in the VSD. Relatively little is known about the underlying mechanisms of conduction through VSDs. The most detailed studies have been performed on Shaker K(+) channel variants in which ion conduction through the VSD is manifested in electrophysiology experiments as a voltage-dependent inward current, the so-called omega current, which appears when the VSDs are in their resting state conformation...
April 20, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28067368/the-effect-of-arginine-on-the-wnt-%C3%AE-catenin-signaling-pathway-during-porcine-intramuscular-preadipocyte-differentiation
#20
Xiaoling Chen, Yanliu Luo, Gang Jia, Guangmang Liu, Hua Zhao, Zhiqing Huang
Dietary l-arginine supplementation decreases backfat thickness and increases intramuscular fat content in growing-finishing pigs, but the underlying mechanisms are unknown. In this study, the effect of arginine on differentiation of porcine intramuscular preadipocytes was investigated in vitro. We showed that the mRNA and protein expressions of the peroxisome proliferator-activated receptor γ (PPARγ) and CCAAT/enhancer binding protein α were upregulated by arginine supplementation. Furthermore, the intracellular triglyceride level was increased by arginine supplementation...
January 9, 2017: Food & Function
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