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Showing 1-30 of 82 results for "01480" within Papers
Yun-Yun Zhu et al.
Archives of pharmacal research, 38(5), 604-613 (2014-09-16)
Three novel alkaloids (1-3), together with nineteen known ones (4-22), were isolated from the bulbs of Lycoris longituba. Their structures were elucidated on the basis of extensive spectroscopic analyses, which belong to several Amaryllidaceae alkaloid skeletons. Among them, the harmane-type
Partha Palit et al.
Journal of ethnopharmacology, 159, 274-284 (2014-12-03)
Gelsemium sempervirens (L.) J.St.-Hil is a herb used for the treatment of various neuroses in both homeopathic and Ayurvedic systems. The present study examines whether Gelsemium reconstituted tincture can protect against scopolamine induced cognitive discrepancies in amnesic mouse model. In
Kadir Ozden Yerdelen et al.
Journal of enzyme inhibition and medicinal chemistry, 30(4), 671-678 (2014-11-29)
Several new oxalamide and 2-butenediamide derivatives have been designed, synthesized and evaluated as the acetyl- and butyryl-cholinesterase inhibitors for Alzheimer's disease. The enzyme inhibitory activity of the synthesized compounds was measured using Ellman's colorimetric method. It was revealed that compound
Irene Sola et al.
Bioorganic & medicinal chemistry, 23(16), 5156-5167 (2015-02-14)
Dual submicromolar trypanocidal-antiplasmodial compounds have been identified by screening and chemical synthesis of 4-aminoquinoline-based heterodimeric compounds of three different structural classes. In Trypanosoma brucei, inhibition of the enzyme trypanothione reductase seems to be involved in the potent trypanocidal activity of
Toby B Cole et al.
Toxicological sciences : an official journal of the Society of Toxicology, 141(2), 409-422 (2014-07-30)
Chlorpyrifos oxon (CPO), the toxic metabolite of the organophosphorus (OP) insecticide chlorpyrifos, causes developmental neurotoxicity in humans and rodents. CPO is hydrolyzed by paraoxonase-1 (PON1), with protection determined by PON1 levels and the human Q192R polymorphism. To examine how the
J Blohberger et al.
Cell death & disease, 6, e1685-e1685 (2015-03-15)
Proliferation, differentiation and death of ovarian cells ensure orderly functioning of the female gonad during the reproductive phase, which ultimately ends with menopause in women. These processes are regulated by several mechanisms, including local signaling via neurotransmitters. Previous studies showed
Marek Bajda et al.
Bioorganic & medicinal chemistry, 23(17), 5610-5618 (2015-08-06)
A novel series of 9-amino-1,2,3,4-tetrahydroacridine derivatives with 4-dimethylaminobenzoic acid moiety was synthesized and tested towards inhibition of cholinesterases and amyloid β aggregation. Target compounds were designed as dual binding site cholinesterase inhibitors able to bind to both the catalytic and
Sahar Mohammad Bagheri et al.
Chemical biology & drug design, 86(5), 1215-1220 (2015-05-27)
A series of 4-hydroxycoumarin-derived compounds 8a-p containing N-benzyl-1,2,3-triazole motif were designed as AChE inhibitors. The title compounds were obtained conveniently using multicomponent click reaction. The in vitro anticholinesterase evaluation of synthesized compounds against AChE and BuChE showed that some of them
Vyacheslav E Semenov et al.
ChemMedChem, 10(11), 1863-1874 (2015-09-29)
Novel 6-methyluracil derivatives with ω-(substituted benzylethylamino)alkyl chains at the nitrogen atoms of the pyrimidine ring were designed and synthesized. The numbers of methylene groups in the alkyl chains were varied along with the electron-withdrawing substituents on the benzyl rings. The
Daniel R Swale et al.
PloS one, 9(8), e103713-e103713 (2014-08-08)
Recent studies suggest that N, N-diethyl-meta-toluamide (DEET) is an acetylcholinesterase inhibitor and that this action may result in neurotoxicity and pose a risk to humans from its use as an insect repellent. We investigated the mode of action of DEET
Zi-Qi Shi et al.
Journal of chromatography. A, 1345, 78-85 (2014-05-06)
Quality standardization of herbal medicines (HMs) is an important task with great challenges. Selection of abundant compounds as markers is currently a major approach for the quality control of HMs; however, such marker compounds are irrelevant to the bioactivities in
Natacha Liendro et al.
Environmental toxicology and pharmacology, 39(2), 525-535 (2015-02-15)
Chlorpyrifos (CPF) is an insecticide widely used for pest control in the fruit-productive region of North Patagonia, Argentina, where it is found in superficial waters. The aim of this study was to establish the toxic effects of CPF in Rhinella
Gokul Krishna et al.
Neurotoxicology and teratology, 49, 49-58 (2015-03-25)
Accumulating evidence suggests that the developing brain is more susceptible to a variety of chemicals. Recent studies have shown a link between the enteric microbiota and brain function. While supplementation of non-digestible oligosaccharides during pregnancy has been demonstrated to positively
Shuang-Shuang Zhang et al.
Phytochemistry, 110, 133-139 (2015-01-13)
Nine lanostanoids, together with nine known ones, were isolated from the ethyl acetate extract of the fruiting bodies of the mushroom Haddowia longipes. Their structures were elucidated as 11-oxo-ganoderiol D, lanosta-8-en-7,11-dioxo-3β-acetyloxy-24,25,26-trihydroxy, lanosta-8-en-7-oxo-3β-acetyloxy-11β,24,25,26-tetrahydroxy, lanosta-7,9(11)-dien-3β-acetyloxy-24,25,26-trihydroxy, lanosta-7,9(11)-dien-3β-acetyloxy-24,26-dihydroxy-25-methoxy, 11-oxo-lucidadiol, 11β-hydroxy-lucidadiol, lucidone H and lanosta-7,9(11),24E-trien-3β-acetyloxy-26,27-dihydroxy
P A Ferchmin et al.
Neurotoxicology, 44, 80-90 (2014-06-15)
Many organophosphorous esters synthesized for applications in industry, agriculture, or warfare irreversibly inhibit acetylcholinesterase, and acute poisoning with these compounds causes life-threatening cholinergic overstimulation. Following classical emergency treatment with atropine, an oxime, and a benzodiazepine, surviving victims often suffer brain
Mayrut Urióstegui-Acosta et al.
Toxicology and applied pharmacology, 279(3), 391-400 (2014-07-08)
Methamidophos (MET) is a highly toxic organophosphate (OP) pesticide that is widely used in developing countries. MET has male reproductive effects, including decreased fertility. We evaluated MET effects on sperm quality, fertilization and DNA integrity, exploring the sensitivity of different
Corinna Scheffel et al.
Toxicology letters, 232(3), 557-565 (2014-12-20)
Poisoning by organophosphorus compounds (OP) used as pesticides and nerve agents is due to irreversible inhibition of the enzyme acetylcholinesterase (AChE). Oximes have been widely recognized for their potency to reactivate the inhibited enzyme. The limited efficacy of currently available
Masoumeh Alipour et al.
European journal of medicinal chemistry, 82, 536-544 (2014-06-19)
A series of 7-hydroxycoumarin derivatives connected by an amidic linker to the different amines were designed and synthesized as cholinesterase inhibitors. Most compounds showed remarkable inhibitory activity against acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE). Among them, N-(1-benzylpiperidin-4-yl)acetamide derivative 4r with IC50
Niko S Radulović et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 80, 114-129 (2015-03-15)
Herein we report on the comprehensive chemical analysis of the essential oils obtained from above- and underground parts of a previously unreported chemotype of Achillea falcata L. (Asteraceae) and, for the first time, on the biological/toxicological profile of its dominant/newly
Md Nasim Uddin et al.
BMC complementary and alternative medicine, 15, 195-195 (2015-06-24)
Alzheimer's disease (AD) is a progressively developing neurodegenerative disorder of the brain in the elderly people. Vanda roxburghii Rbr. root has been used traditionally in Bangladesh as tonic to brain and in the treatment of nervous system disorders including AD.
Zhi-Pei Sang et al.
Chemical biology & drug design, 86(5), 1168-1177 (2015-05-06)
A series of scutellarein carbamate derivatives were designed and synthesized based on the multitarget-directed drug design strategy for treatment of Alzheimer's disease. Their acetylcholinesterase and butyrylcholinesterase inhibitory activities, antioxidant activities, metals chelation, and neuroprotective effects against hydrogen peroxide-induced PC12 cell
Dominika Dingova et al.
Analytical biochemistry, 462, 67-75 (2014-06-15)
Ellman's assay is the most commonly used method to measure cholinesterase activity. It is cheap, fast, and reliable, but it has limitations when used for biological samples. The problems arise from 5,5-dithiobis(2-nitrobenzoic acid) (DTNB), which is unstable, interacts with free
Laura Friggeri et al.
Journal of enzyme inhibition and medicinal chemistry, 30(1), 166-172 (2014-02-13)
Metal ions, especially copper, zinc and iron, play an important role in the neurodegeneration process because they can affect protein misfolding, leading to the formation of the amyloid deposits and oxidative stress leading to reactive oxygen species (ROS). Here we
K Y Khaw et al.
Phytomedicine : international journal of phytotherapy and phytopharmacology, 21(11), 1303-1309 (2014-08-31)
Garcinia mangostana is a well-known tropical plant found mostly in South East Asia. The present study investigated acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory activities of G. mangostana extract and its chemical constituents using Ellman's colorimetric method. Cholinesterase inhibitory-guided approach led
Jianping Zhu et al.
Pakistan journal of pharmaceutical sciences, 28(2 Suppl), 671-674 (2015-03-23)
The continuous effects on Acetylcholinesterase (AChE) activity of medaka (Oryzias latipes) caused by dichlorvos, methomyl and deltamethrin in vivo were investigated, and the trends of AChE activity inhibition due to the influence of these insecticides were discussed. The LC50-24h of
Saman Arab et al.
Archiv der Pharmazie, 348(9), 643-649 (2015-07-21)
A novel series of chroman-4-one derivatives containing the N-benzyl pyridinium moiety were designed, synthesized, and evaluated for their acetylcholinesterase (AChE) inhibitory activities. Among the various synthesized compounds, (E)-1-(2,3-dibromobenzyl)-4-((7-ethoxy-4-oxochroman-3-ylidene)methyl)pyridinium bromide (8l) depicted the most potent anti-AChE activity (IC50 = 0.048 μM). In addition, the
Longsheng Chen et al.
Food chemistry, 186, 37-45 (2015-05-16)
The profile and bioactivity of phytochemicals in Araiostegia yunnanensis (Christ) Cop were investigated. The total flavonoids content in A. yunnanensis is about 84.90 mg/g. By means of HPLC-DAD-ESI-MS, the main flavonoids in A. yunnanensis were tentatively identified as myricetin 3-O-rhamnosylglucoside
Aditya Kapil Valiveti et al.
Chemico-biological interactions, 237, 125-132 (2015-06-14)
A series of mono pyridinium oximes linked with arenylacetamides as side chains were synthesized and their in vitro reactivation potential was evaluated against human acetylcholinesterase (hAChE) inhibited by organophosphorus inhibitors (OP) such as sarin, VX and tabun. The reactivation data
Jayasingh Chellammal Hanish Singh et al.
Pharmaceutical biology, 53(5), 630-636 (2014-12-05)
Vanillic acid (VA), a flavoring agent used in food and drug products, obtained naturally from the plant Angelica sinensis (Oliv.) Diels (Apiaceae), used in the traditional Chinese medicine. It is reported to possess strong antioxidant, anti-inflammatory, and neuroprotective effects. However
Jae Sue Choi et al.
Archives of pharmacal research, 37(10), 1354-1363 (2014-07-06)
To investigate the effect of C-glycosylation at different positions of luteolin, the structure-activity relationships of luteolin and a pair of isomeric C-glycosylated derivatives orientin and isoorientin, were evaluated. We investigated the effects of C-glycosylation on the antioxidant, anti-Alzheimer's disease (AD)
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