BACKGROUND: Lincomycin (LIN) is an antibiotic widely used in veterinary medicine to cure infections caused by Gram‐positive pathogens. Although the toxicity of LIN is not serious, it will cause adverse effects in humans, such as pseudomembranous enteritis and bacterial resistance. In this study...
Production of xylanases by Thermomyces lanuginosus wild type and its deoxyglucose resistant mutant M7 on different substrates was investigated. The mutation conferred catabolite repression resistance as M7 supported xylanase production on glucose-based medium that was 8.8-fold higher than that o...
Aim: Differential radiomodification induced by 2-deoxy-D-glucose (2-DG) is proving to be a feasible modality for optimizing tumor radiotherapy. Our earlier work on Ehrlich ascites tumor cells has shown that pretreatment with hematoporphyrin derivatives increases the uptake and phosphorylation of...
Neuronal hyperactivity in essential tremor is accompanied by high energy demand in cerebellum, medulla and the thalamus. It has been suggested that brain regions that have increased metabolic demands are highly vulnerable to interruptions in glucose metabolism. In the present investigation attem...
5-Fluoro-dl-tryptophan (5F-Trp) is a very sensitive probe used to investigate orientation and dynamics of biomacromolecules at the in situ level. In order to establish a 19 F NMR strategy, the crystal structure and 19 F chemical shielding tensor of 5F-Trp are reported. A novel ap...
This study compared urinary 5-hydroxytryptophol (5HTOL) with breath-ethanol testing as objective ways to disclose recent drinking by outpatients attending a methadone maintenance treatment clinic. Information about quantity and frequency of alcohol use was obtained by confidential self-reports. ...
Hypothesis: The unknown prevalence of alcohol use and misuse among aviation pilots, crewmembers and associated support personnel call for continuous improvement of methods for detecting recent alcohol use. Early detection is essential to proper treatment and prevention of potentially catastroph...
Male Wistar rats (120-230 g) were used in these experiments. Some rats were deprived of water for 48 h before testing in a conflict procedure. Then, after 20 licks from a water bottle with a metal drinking tube, the animal received an electric shock (0.5 mA/500 msec).The effects of two classica...
Selective serotonin reuptake inhibitors (SSRIs) have been reported to range from low parts per trillion to parts per billion levels in surface waters, wastewater effluents, and sediments. These low levels have led to concern for their potential long-term risks to the survival, growth, and reprod...
A new type of mesoporous silica nanoparticle (MSN) was synthesized in fluoride media via sol–gel technique using TritonX 100 and Tween-20. The surface area and pore volume of the MSN particles were modified by varying the concentration of Tween-20. The prepared MSN nanoparticles with large surf...
Multiple lines of investigation have explored the role of dopaminergic systems in mental depression. Chronic treatment with antidepressant drugs has been reported to alter dopaminergic neurotransmission, most notably a sensitization of behavioural responses to agonists acting at D 2 /D ...
The Pictet–Spengler (PS) cyclizations of β3‐hTrp derivatives as arylethylamine substrates were performed with L‐α‐amino and D‐α‐amino aldehydes as carbonyl components. During the PS reaction, a new stereogenic center was created, and the mixture of cis/trans 1,3‐disubstituted 1,2,3,4‐...
Fatigue during prolonged exercise is related to brain monoamines concentrations, but the mechanisms underlying this relationship have not been fully elucidated. We investigated the effects of increased central tryptophan (TRP) availability on physical performance and thermoregulation in running ...
The cyclic C5a receptor antagonist, phenylalanine [l-ornithine-proline-d-cyclohexylalanine-tryptophan-arginine] (F-[OPchaWR]), has ∼1000-fold less affinity for the C5a receptor (C5aR) on murine polymorphonuclear leukocytes than on human. Analysis of C5aR from different species shows that a poss...
In this study, electronic band structure, linear and nonlinear optical properties of crystalline 2-aminofluorene are calculated following the density functional theory. The exchange correlation effects are taken into account by generalized gradient approximation and modified Becke–Johnson poten...
Prostaglandin endoperoxide H synthase is the key enzyme in the conversion of arachidonic acid to tissue prostanoids. Two isoforms of prostaglandin endoperoxide H synthase have been identified: PHS-1 is constitutively expressed in most tissues under normal physiological conditions and PHS-2 is ex...
Kinetic analysis of the inactiviation of hamster NAT1 by 2-(bromoacetylamino)fluorene (Br-AAF) and bromoacetanilide revealed that Br-AAF is an active site directed affinity label whereas bromoacetanilide acts as a bimolecular alkylating agent. ESI MS analysis of NAT1 treated with Br-AAF showed t...
Tartary buckwheat (Fagopyrum tataricum) not only provides a supplement to primary grain crops in China but also has high medicinal value, by virtue of its rich content of flavonoids possessing antioxidant, anti‐inflammatory, and anticancer properties. Light is an important environmental factor ...
Scope This study investigated the effects of cooked whole asparagus (ASP) versus its equivalent level of purified flavonoid glycoside, rutin (RUT), on dextran sodium sulfate (DSS)‐induced colitis and subsequent colitis recovery in mice.Methods and results C57BL/6 male mice were fed an AIN‐93G ...
Zygophyllum fabago grows in arid, saline soil, or disturbed sites, such as former industrial or mining areas. This species is able to grow in coarse mineral substrates contaminated with heavy metals. To investigate the effects of the flavonoid rutin (Rtn) on certain heavy metal stress responses ...
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