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Showing 1-30 of 57 results for "H125" within Papers
Daria Cosaceanu et al.
Cancer letters, 222(2), 173-181 (2005-05-03)
Targeted disruption of the insulin-like growth factor 1 receptor (IGF-1R) restricts proliferation of tumor cells and enhances their in vitro radiosensitivity. However, there is little information regarding the effect of IGF-1R expression and function on the lung cancer response to
Marcos Tascon et al.
Analytical and bioanalytical chemistry, 407(13), 3637-3645 (2015-03-10)
The use of algae as a foodstuff is rapidly expanding worldwide from the East Asian countries, where they are also used for medical care. Harmala alkaloids (HAlk) are a family of bioactive compounds found in the extracts of some plants
Ashutosh Singhal et al.
Scientific reports, 10(1), 8663-8663 (2020-05-28)
Niemann-Pick type C (NPC) disease is a fatal neurodegenerative disorder caused by mutations in NPC1 and NPC2 genes that result in an accumulation of cholesterol in lysosomes. The majority of children with NPC die in adolescence. Currently, no FDA-approved therapies
S Y Tse et al.
Biochemical pharmacology, 42(3), 459-464 (1991-07-15)
beta-Carboline alkaloids are derived as a result of condensation between indoleamine (e.g. tryptamine) and short-chain carboxylic acid (e.g. pyruvic acid) or aldehyde (e.g. acetaldehyde), a reaction that occurs readily at room temperature. These compounds have been found endogenously in human
Role of cyclodextrins in improving oral drug delivery
Loftsson T, et al.
The American Journal of Drug and Alcohol Abuse, 261-275 (2004)
Jane J Pappas et al.
Genes, chromosomes & cancer, 47(11), 978-993 (2008-07-30)
Retinoic acid receptor B2 (RARB2) is frequently inactivated in cancer. Methylation in the 5'-untranslated region and first exon is known to play a role; however, few studies have analyzed the detailed methylation pattern of the promoter region. We show that
Chad J Miller et al.
PLoS biology, 17(3), e2006540-e2006540 (2019-03-22)
Specificity within protein kinase signaling cascades is determined by direct and indirect interactions between kinases and their substrates. While the impact of localization and recruitment on kinase-substrate targeting can be readily assessed, evaluating the relative importance of direct phosphorylation site
Dea Shahinas et al.
Antimicrobial agents and chemotherapy, 56(8), 4207-4213 (2012-05-23)
Previous studies have shown an antimalarial effect of total alkaloids extracted from leaves of Guiera senegalensis from Mali in West Africa. We independently observed that the beta-carboline alkaloid harmine obtained from a natural product library screen inhibited Plasmodium falciparum heat
Inhibition of platelet aggregation and arachidonic acid metabolism by B-carboline alkaloids.
S A Saeed et al.
Biochemical Society transactions, 21(4), 461S-461S (1993-11-01)
Catherine R Barker et al.
International journal of cancer, 118(11), 2685-2693 (2005-12-31)
The modulation of DNA topology by topoisomerase II plays a crucial role during chromosome condensation and segregation in mitosis and has thus become a highly attractive target for chemotherapeutic drugs. However, these drugs are highly toxic, and so new approaches
Akihisa Abe et al.
Anti-cancer drugs, 20(5), 373-381 (2009-03-26)
The beta-carboline alkaloids are naturally existing plant substances. It is known that these alkaloids have a wide spectrum of neuropharmacological, psychopharmacological, and antitumor effects. Therefore, they have been traditionally used in oriental medicine for the treatment of various diseases including
D E Rusyniak et al.
Neuroscience, 154(4), 1619-1626 (2008-06-07)
When given in a warm environment MDMA (3,4-methylenedioxymethamphetamine, ecstasy) causes hyperthermia by increasing interscapular brown adipose tissue (iBAT) heat production and decreasing heat loss via cutaneous vasoconstriction. When given in a cold environment, however, MDMA causes hypothermia by an unknown
L Smart
European journal of pharmacology, 75(4), 265-269 (1981-11-05)
The actions of five harmala alkaloids on the sodium dependent high affinity choline uptake activity in rat striatal synaptosomes was investigated. All five compounds were found to be competitive inhibitors of the uptake system. Harmalol (Ki approximately 3.4 microM) and
Wimal Herath et al.
Chemical & pharmaceutical bulletin, 51(6), 646-648 (2003-06-17)
Several microorganisms showed the ability to transform the harman alkaloids, harmaline (1), harmalol (2) and harman (5). Harmaline (1) and harmalol (2) were converted by Rhodotorula rubra ATCC 20129 into the tryptamines, 2-acetyl-3-(2-acetamidoethyl)-7-methoxyindole (3) and 2-acetyl-3-(2-acetamidoethyl)-7-hydroxyindole (4), respectively. Harman (5)
Effect of harmalol on blood pressure in anaesthetized rats.
A H Gilani et al.
Biochemical Society transactions, 20(4), 359S-359S (1992-11-01)
Yoshimitsu Yamazaki et al.
Zeitschrift fur Naturforschung. C, Journal of biosciences, 65(1-2), 49-54 (2010-04-02)
A recent study showed that N-acylserotonin derivatives have strong inhibitory activity against tyrosinase. To clarify the role of the 5-hydroxy group in the indole ring, 2-, 4-, 5-, 6-, and 7-hydroxyindole and 11 related compounds such as 5-hydroxyindan and 6-hydroxyquinoline
Shohreh Nafisi et al.
Journal of photochemistry and photobiology. B, Biology, 100(2), 84-91 (2010-06-15)
Beta-carboline alkaloids present in Peganum harmala (harmal) have recently drawn attention due to their antitumor activities. The mechanistic studies indicate that beta-carboline derivatives inhibit DNA topoisomerases and interfere with DNA synthesis. They interact with DNA via both groove binding and
T L Yaksh et al.
Life sciences, 48(7), 623-633 (1991-01-01)
The substituted glucopyranose ring structure 2-hydroxypropyl-beta-cyclodextrin (CDEX) increases the solubility of molecules by inclusion of the agent in the lipophilic interior of the ring. This property is of particular use for the administration of molecules by the intracerebral (ICV) or
Cyclodextrin Drug Carrier Systems.
Kaneto Uekama et al.
Chemical reviews, 98(5), 2045-2076 (2002-02-19)
Ji-Hyun Im et al.
Vascular pharmacology, 50(5-6), 147-152 (2008-12-17)
Beta-carboline alkaloids including harmalol, harmaline, norharmane, harmol, harmine and harmane are important constituents of the medicinal plant, Perganum harmala L. (Zygophylaceae), which has been used in traditional medicine. In the present study, the antiplatelet activities of six beta-carboline alkaloid compounds
Najma Arshad et al.
Phytotherapy research : PTR, 22(11), 1533-1538 (2008-09-25)
In the present study the antimicrobial potential of various extracts from 12 medicinal plants has been investigated in vitro on multiple antibiotic resistant pathogens and some selected protozoa isolated from poultry. The initial examination was performed on E. coli (n
C C Shi et al.
Japanese journal of pharmacology, 85(3), 299-305 (2001-04-28)
Three psychological active principles from the seeds of Peganum harmala L., harmine, harmaline and harmalol, showed vasorelaxant activities in isolated rat thoracic aorta preparations precontracted by phenylephrine or KCl with rank order of relaxation potency of harmine > harmaline >
K T Douglas et al.
Molecular pharmacology, 23(3), 614-618 (1983-05-01)
The ionization and UV-visible spectral properties of some harmala alkaloids have been investigated spectrophotometrically. Harmaline and harmine were found to have pKa values of 9.55 +/- 0.04 and 7.45 +/- 0.03, respectively. The ionization of harmalol was characterized by two
Sun Young Park et al.
BMB reports, 43(12), 824-829 (2010-12-30)
Melanin synthesis is regulated by melanocyte specific enzymes and related transcription factors. β-carboline alkaloids including harmaline and harmalol are widely distributed in the environment including several plant families and alcoholic beverages. Presently, melanin content and tyrosinase activity were increased in
Mohamed A M El Gendy et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 50(2), 353-362 (2011-11-01)
Dioxins are known to cause several human cancers through activation of the aryl hydrocarbon receptor (AhR). Harmaline and harmalol are dihydro-β-carboline compounds present in several medicinal plants such as Peganum harmala. We have previously demonstrated the ability of P. harmala
Shohreh Nafisi et al.
DNA and cell biology, 29(12), 753-761 (2010-08-25)
β-Carboline alkaloids are present in medicinal plants such as Peganum harmala L., which have been used as folk medicine in anticancer therapy. Recently, they have drawn attention because of their antitumor activities. Despite considerable interest and investigations on alkaloid-DNA complexes
D H Kim et al.
The European journal of neuroscience, 13(10), 1861-1872 (2001-06-14)
The present study elucidated the protective effect of beta-carbolines (harmaline, harmalol and harmine) against oxidative damage of brain mitochondria, synaptosomes and PC12 cells induced by either dopamine or 6-hydroxydopamine. Harmaline, harmalol and antioxidant enzymes (superoxide dismutase/SOD and catalase) decreased the
C S Lee et al.
Journal of neurochemistry, 75(2), 521-531 (2000-07-19)
The present study elucidated the protective effect of beta-carbolines (harmaline, harmalol, and harmine) on oxidative neuronal damage. MPTP treatment increased activities of total superoxide dismutase, catalase, and glutathione peroxidase and levels of malondialdehyde and carbonyls in the basal ganglia, diencephalon
A Movafeghi et al.
Natural product research, 23(3), 301-308 (2009-02-24)
Chemical composition of the floral nectar of Peganum harmala, a herbaceous medicinal perennial of the family Zygophyllaceae, was analysed using high-performance liquid chromatography technique. The nectar sugar detection experiments resulted in 33.1, 39.8 and 27.4%, respectively, for fructose, glucose and
P Rivas et al.
Comparative biochemistry and physiology. Part C, Pharmacology, toxicology & endocrinology, 122(1), 27-31 (1999-04-06)
Several beta-carboline (9H-pyrido-[3,4-b]-indole) alkaloids were evaluated for in vitro trypanosomicidal activity against Trypanosoma cruzi epimastigotes belonging to two different strains (Tulahuén and LQ) showing different sensitivity to nifurtimox. Important differences were observed in the susceptibility of the parasites to these
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