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2016 | 76 | 2 |

Tytuł artykułu

Pharmacokinetics and pharmacodynamics of a novel Acetylcholinesterase Inhibitor, DMNG-3

Warianty tytułu

Języki publikacji

EN

Abstrakty

EN
DMNG-3 (3β-Methyl-[2-(4-nitrophenoxy)ethyl]-amino]con-5-enine), is a new and the potentially most potent acetylcholinesterase inhibitor recently obtained from conessine by N-demethylation and nucleophilic substitution reaction. In the present study, a step‑down passive avoidance test was used to investigate whether DMNG-3 could modulate impairment of learning and memory induced by scopolamine, and a high performance liquid chromatography (HPLC) method for the determination of DMNG-3 in biological samples was applied to study its pharmacokinetics and tissues distribution. Separation was achieved on C18 column using a mobile phase consisting methanol‑water (70:30, v/v) at a flow rate of 1.0 ml/min. The intra- and inter-day precisions were good and the RSD was all lower than 1.30%. The mean absolute recovery of DMNG-3 in plasma ranged from 88.55 to 96.45%. Our results showed oral administration of DMNG-3 (10, 25, 50 mg/kg/day) can significantly improve the latency and number of errors and had a positive effect of improvement of learning and memory in mice in passive avoidance tests. The elimination half-life (T1/2) was 14.07±1.29, 15.87±1.03 h, and the total clearance (CL) values were 0.70±0.11, 0.78±0.13 L/h/kg, respectively. The pharmacokinetic studies showed that DMNG-3 has a slowly clearance and large distribution volume in experimental animals, and its disposition is linear over the range of doses tested. The liver, small intestine, stomach, and large intestine were the major distribution tissues of DMNG-3 in mice. It was found that DMNG-3 could be detected in brain, suggesting that DMNG-3 can cross the blood-brain barrier. The present study shows that DMNG-3 can be possible developed as a new drug for the treatment of Alzheimer’s disease in the future.

Słowa kluczowe

Wydawca

-

Rocznik

Tom

76

Numer

2

Opis fizyczny

p.117-124,fig.,ref.

Twórcy

autor
  • Key Laboratory of Screening for and Deep Processing in New Tibetan Medicine of Gansu Province, School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China
autor
  • Key Laboratory of Screening for and Deep Processing in New Tibetan Medicine of Gansu Province, School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China
autor
  • Key Laboratory of Screening for and Deep Processing in New Tibetan Medicine of Gansu Province, School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China
autor
  • Key Laboratory of Screening for and Deep Processing in New Tibetan Medicine of Gansu Province, School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China
autor
  • Key Laboratory of Screening for and Deep Processing in New Tibetan Medicine of Gansu Province, School of Life Science and Engineering, Lanzhou University of Technology, Gansu, P.R. China

Bibliografia

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Typ dokumentu

Bibliografia

Identyfikatory

Identyfikator YADDA

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