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Alamgir M,Alam SMS,Alaul M,Rashid M,Hasan M,Choudhuri MSK Kyung Hee Oriental Medicine Research Center 2006 Oriental pharmacy and experimental medicine Vol.6 No.3
The Sundarbans mangrove forest has a rich biodiversity of flowering plants and many of these have been used in traditional medicine although the flora remains comparatively uninvestigated scientifically. Xylocarpus granatum, Xylocarpus moluccensis and Excoecaria agallocha methanolic extract showed a central nervous system depressant activity on the hole cross and open field test at 800 mg/kg dose level. The most significant depressant activity was observed in Xylocarpus granatum followed by Xylocarpus moluccensis and Excoecaria agallocha. There was no depressant activity observed in the models for Sarcolobus globosus. Further studies are required to confirm the activity and to explain the mechanism.
An Exploratory Study of Subscribers’ Attitude toward Mobile Advertising
Alamgir Hossain,Bangwool Han,Minho Kim 전북대학교 산업경제연구소 2017 아태경상저널 Vol.9 No.2
The prompt diffusion of mobile phone has resulted in the increasing usage of mobile advertisement. A significant number of firms have invested their knowledge and resources in this field, and to develop a successful strategy they need proper understanding about advertisement and its contents. Purpose of this study was to revisit the underlying factors affecting consumer attitude toward mobile advertising in Bangladesh. Based on the empirical studies regarding attitude toward mobile advertising, a questionnaire was developed and 355 mobile subscribers were taken into considerations. Five variables i.e. personalization, credibility, incentive, informativeness and entertainment were selected and analyzed through structural equation model. Results portrait that entertainment followed by informativeness and credibility are the most dominant factors and has motivational influence on consumer attitude toward advertisement. Findings forge ahead the current state of art in mobile marketing research with substantial practical contributions for the design of operative mobile advertising.
Alamgir, M,Rob, Ma,Kundu, DC,Joy, JHK,Sarder, MM Kyung Hee Oriental Medicine Research Center 2007 Oriental pharmacy and experimental medicine Vol.7 No.4
Two medicinal plant of Sundarbans mangrove forest has been tested for the evaluation of growth inhibitory and antibacterial activity. The methanol extract of Xylocarpus granatum stem bark showed potent wheat rootlet ($IC_{50}=0.01{\mu}g/ml$) and shoot ($IC_{50}=0.23{\mu}g/ml$) growth inhibitory activity in a concentration related manner. The growth inhibitory activity was markedly decreased in residual methanol extract. The methanol extract showed antibacterial activity (MIC > 3 mg/ml) against Bacillus subtilis, Staphylococcus aureous and Proteus vulgaris. The residual methanol extract did not show any antibacterial activity. The results suggest the bioactive principle(s) of Xylocarpus granatum may be relatively non polar compound(s). The methanol extract and residual methanol extract of Sarcolobus globosus stem showed poor wheat rootlet and shoot growth inhibitory activity and no antibacterial activity.
Central nervous system depressant effect of hot water extract of Ocimum sanctum Linn. (Labiateae)
Alamgir, Mahiuddin,Choudhuri, Shahabuddin Kabir,Jabbar, Shaila,Rajia, Sultana,Khan, Mahmud Tareq Hassan Kyung Hee Oriental Medicine Research Center 2002 Oriental pharmacy and experimental medicine Vol.2 No.2
A battery of neuropharmacological experiments showed the hot water extract of Ocimum sanctum Linn. (Labiateae) had a depressant effect on the central nervous system (CNS), but the aqueous extract showed no effect on it. The hot water extract reduced the spontaneous locomotor activity, exploratory head dipping, propulsive locomotion and exploratory ambulation as well as prolonged the pentobarbital induced sleeping time. The depressant effect starts from 60 minutes after the drug administration and continued to 180 minutes. The drug may exert central depressant effect by interfering with the function of the cortex.
Md. Alamgir Hossain,Md. Khadem Ali,신차균 한국분자세포생물학회 2014 Molecules and cells Vol.37 No.2
We identified four basic amino acid residues as nuclear localization signals (NLS) in the C-terminal domain of the prototype foamy viral (PFV) integrase (IN) protein that were essential for viral replication. We constructed seven point mutants in the C-terminal domain by changing the lysine and arginine at residues 305, 308, 313, 315, 318, 324, and 329 to threonine or proline, respectively, to identify residues conferring NLS activity. Our results showed that mu-tation of these residues had no effect on expression assembly, release of viral particles, or in vitro recombinant IN enzymatic activity. However, mutations at residues 305 (R → T), 313(R → T), 315(R → P), and 329(R → T) lead to the production of defective viral particles with loss of infectivity, whereas non-defective mutations at residues 308(R → T), 318(K → T), and 324(K → T) did not show any adverse effects on subsequent production or release of viral particles. Sub-cellular fractionation and immunostaining for viral protein PFV-IN and PFV-Gag localization revealed predominant cytoplasmic localization of PFV-IN in defective mutants, whereas cytoplasmic and nuclear localiza-tion of PFV-IN was observed in wild type and non-defective mutants. However sub-cellular localization of PFV-Gag re-sulted in predominant nuclear localization and less pre-sence in the cytop-lasm of the wild type and non-defective mutants. But defective mutants showed only nuclear localization of Gag. Therefore, we postulate that four basic arginine residues at 305, 313, 315 and 329 confer the karyoplilic properties of PFV-IN and are essential for successful viral integration and replication.