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Articles by Mohammed Abu Sayeed
Total Records ( 3 ) for Mohammed Abu Sayeed
  M. Sekendar Ali , Antu Dey , Mohammed Abu Sayeed , Aziz Abdur Rahman , Md. Ruhul Kuddus and Mohammad A. Rashid
  The present study was designed to investigate the sedative and cytotoxic activities of a crude methanol extract of leaves of Crataeva nurvala Buch-Ham. Sedative activity was evaluated by using hole cross, open field and Elevated-Plus Maze (EPM) tests at 400 mg kg-1 body weight. The crude extract decreased the locomotor activity of mice in hole cross, open field and EPM tests. The cytotoxic activity of this extract was determined by brine shrimp lethality bioassay where the LC50 value was found to be 55.46 μg mL-1 as compared to that of 0.451 μg mL-1 exhibited by standard vincristine sulphate. The result shows that the crude extract of the leaves of C. nurvala have significant (*p<0.05) sedative and cytotoxic activities.
  M. Sekendar Ali , M. Abdullah Al Mamun , Mohammed Abu Sayeed , Mohammad S. Rahman and Mohammad A. Rashid
  Bangladesh is a good repository of medicinal plants. Traditional healers utilize them for treating many pathological states. Unfortunately, very few of them have been scientifically evaluated to know about the deep inside. The current study here is designed to evaluate the in vivo sedative activity of the leaves of Glochidion multiloculare (Rottler ex Willd) Voigt. With this purpose, the plant leaves were collected and powdered for extraction with methanol. Initially, the plant extract was subjected to brine shrimp lethality bioassay to monitor the presence of bioactive molecules. Later on, different neuropharmacological studies including hole cross, open field, thiopental-sodium induced sleeping time and Elevated-Plus Maze (EPM) tests were conducted to investigate sedative action. In the brine shrimp lethality bioassay, the LC50 value of the extract was found 37.19 μg mL-1, whereas the standard vincristine sulphate showed the LC50 10.50 μg mL-1. The moderate toxicity of the extract on brine shrimp indicated the existence of bioactive secondary metabolites in this extract. Besides, the extract decreased the locomotor activity of mice in hole cross, open field and EPM test indicating the CNS depression capability of the plant. Moreover, the extract was very much effective for prolonging the sleeping time (103 min) with quick onset of action (22 min) in comparison to the control group. The efficacy of the plant extract was found closer to the common sedative drug diazepam. Further investigations are required to explore the underlying mechanism of the sedative action and isolate bioactive principles.
  Md. Jakaria , Mohammad Parvez , Rashaduz Zaman , Arifujjaman , Md. Imran Hasan , Mohammed Abu Sayeed and Md. Hazrat Ali
  The present study was to investigate the analgesic activity of the methanol extract of H. cordifolia bark by using in vivo animal model studies. The effect was studied using acetic acid-induced abdominal constriction test and formalin induced hind paw licking test in mice model. The results of the study showed that the extract exhibited significant analgesic effect. In acetic acid-induced writhing test, significant percentage of inhibition (78.48%) shows that at the dose of 400 mg kg–1 and at the same dose in formalin induced hand paw licking model shows significant activity in early phase (22.03% of inhibition) where in late phase (19.88% of inhibition) comparable to standard drug diclofenac sodium. These findings suggested that H. cordifolia bark has got the potential as a candidate for future analgesic agent.
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