An efficient synthesis of N-acetyl-2-substituted indole derivatives via direct intramolecular hydroamination of N-acetyl-2-alkynylaniline derivatives was developed. The reaction could be applied to a wide range of substrates employing only 1–2 mol% of PtCl4 as the catalyst to furnish the desire...
A highly selective radical dioxygenation of alkenes using hydroxamic acid and O2 with 5–10 mol % of tert-butyl hydroperoxide as a catalyst was developed. On the basis of this newly developed strategy, a wide range of phenylethanol derivatives with a variety of functional groups can be effective...
The effects of the imidazoline 6,7-benzoidazoxan on seizure threshold were assessed using standard tests of anticonvulsant activity. Benzoidazoxan (10–30 mg/kg i.p.; 100 mg/kg p.o.) prevented tonic, but not clonic, convulsions induced by electroshock in mice. The increase in seizure threshold w...
IntroductionA single LC-MS equipment was used to validate three methods for simultaneously analyzing cocaine (COC), benzoylecgonine (BZE), cocaethylene (CE), anhydroecgonine methyl ester (AEME) and anhydroecgonine (AEC) in oral fluid (OF), urine and plasma.
Cocaine use disorders are strongly influenced by the social conditions prior, during, and after exposure to cocaine. In this chapter, we discuss how social factors such as early life stress, social rank stress, and environmental stress impact vulnerability and resilience to cocaine. The discussi...
Patients with post-traumatic stress disorder have a heightened vulnerability to developing substance use disorders; however, the biological underpinnings of this vulnerability remain unresolved. We used the predator odor stress model of post-traumatic stress disorder with segregation of subjects...
Cocaine (COC) is one of the most widely abused drugs in the world and its sensitive and its reliable measurement in blood is of great importance in the field of forensic and clinical toxicology. Additionally, the determination of COC metabolites such as benzoylecgonine (BZE), cocaethylene (CE), ...
For different reasons, street cocaine is often diluted with pharmacologically active substances, the so-called adulterants such as levamisole or hydroxyzine. A controversial debate exists currently on the uptake of adulterants from cocaine preparations and drug-related death. Previous research c...
Accelerating cocaine metabolism through enzymatic hydrolysis at cocaine benzoyl ester is recognized as a promising therapeutic approach for cocaine abuse treatment. Our more recently designed A199S/F227A/S287G/A328W/Y332G mutant of human BChE, denoted as cocaine hydrolase-3 (CocH3), has a consid...
Drug addiction is a widespread social problem, which not only brings adverse consequences to the human body, but also causes great burden to the society. However, it's still unclear how the long-term and sustained cocaine exposure will affect clock genes’ expression in the reward related b...
Illicit drugs and their metabolites have been identified as emerging aquatic pollutants. Cocaine (COC) is one of the most used illicit drug worldwide. After human consumption, COC enters the aquatic ecosystems, where it is commonly detected in ng L−1 concentration range. Although a number of stu...
Drugs which are commonly smoked or sniffed (e.g. cocaine), can contaminate hair through smoke or dust; therefore testing for metabolites, especially hydroxy metabolites, is highly recommended. The presence of hydroxy metabolites in street-cocaine (COC) has been discussed. To check if detection o...
Cocaine was the second most widely used drug in Europe in 2016, with 3.5 million consumers aged 15–64 years old. Adulterants are pharmacologically active substances developed for medical purposes, however, there is little knowledge about their influence in the human body when there is concomita...
The methionine salvage pathway allows the in vivo recovery of the methylthio moiety of methionine upon the formation of methylthioadenosine (MTA) from S-adenosylmethionine (SAM). The Fe(II)-containing form of acireductone dioxygenase (ARD) catalyzes the penultimate step in the pathway in Klebsie...
1-Arylimidazolidine-2-thiones (1a–g) were synthesized by the condensation reaction of N-arylethylenediamines with carbon disulfide in xylene medium. Their further alkylation with methyl iodide led to the formation of some biologically active 1-aryl-2-methylthio-imidazolines (2a–g). The 7-(4-me...
The molecular structure, vibrational spectra and photochemistry of 5-methoxy-1-phenyl-1H-tetrazole (5MPT) were studied by matrix isolation infrared spectroscopy and DFT(B3LYP)/6-311++G(d,p) calculations. According to the calculations, only one double degenerated-by-symmetry minimum exists in the...
Pentafluorophenyl diphenylphosphinate was found to be a new efficient coupling reagent for the racemization-free synthesis of peptides. It has been applied in both the solution and the solid phase peptide synthesis.
We examined the effect of N,N,N-trimethylsphingosine (TMS) on the interleukin-1β (IL-1β)-induced E-selectin expression in human umbilical vein endothelial cells (HUVEC). Incubation of HUVEC with TMS (0.1–10 μM) resulted in a concentration-dependent inhibition of IL-1β-induced E-selectin exp...
We investigated the influence of N,N,N-trimethylsphingosine (TMS), a potent inhibitor of protein kinase C (PKC), on whole blood aggregation and ATP release from platelets. The preincubation with TMS at 1μM for 2 min enhanced ATP release during arachidonic acid-induced aggregation. The ristoceti...
Preformed HLA donor-specific antibodies (DSA) only detected with Luminex have been associated with increased risk of antibody-mediated rejection (ABMR) and graft failure after kidney transplantation (KT). Their evolution after KT may modify this risk. We analyzed postransplant evolution of prefo...
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