@article {601, title = {In silico and in vitro Studies on Lyngbya majuscula using against Lung Cancer Cell Line (A549)}, journal = {Pharmacognosy Journal}, volume = {10}, year = {2018}, month = {March 2018}, pages = {421-428}, type = {Original Article}, chapter = {421}, abstract = {

Objective: To predict an anticancer drug from the members of cyanobacteria, in silico molecular docking was carried out between the cyanobacterial bioactive compounds and lung cancer causing receptor. The highest docking score was produced by Lyngbyastatin (Lyngbya majuscula). In the present study anticancer potential of L. majuscula was evaluated on human lung cancer cell line (A549) using its methanolic extract. Methods: Molecular docking was carried out between the Epidermal Growth Factor Receptor tyrosine kinase and cyanobacterial compounds. Based on the docking results, Lyngbyastatin was found to be the most effective compound. As this compound is present in the L. majuscula, the cytotoxicity of this organism was assessed by standard cell viability assays like MTT method. Algal methanolic extract treated with A 549 cell line morphology was studied by DAPI staining. DNA fragmentation assay was also conducted to study the presence of DNA laddering. Results: Totally 75 bioactive compounds were docked with Epidermal Growth Factor Receptor tyrosine kinase . Of them, 12 compounds were selected based on the docking score. Among the 12 bioactive compounds, Lyngbyastatin found to be most effective compound. L. majuscula showed potential anticancer activity against A549 cell line with IC50 value of 14.82\± 0.62 \μg/ml in MTT method. Most of the treated cells lost their characteristic stretched appearance with shrinkage of nucleus. DNA profile revealed the presence of sheared DNA in treated ones but no fragmentation was observed. Conclusion: The results indicated potent anticancer of algal methanolic extract on A549 cell line, which may be good candidates for further investigation to isolate bioactive anticancer compounds.

}, keywords = {Cytotoxic, Lyngbya majuscula, Lyngbyastatin, Molecular docking, MTT assay DAPI staining}, doi = {10.5530/pj.2018.3.69}, url = {http://fulltxt.org/article/502}, author = {Sangeetha Muniaraj and Vijayakumar Subramanian and Prabhu Srinivasan and Manogar Palani} } @article {400, title = {Mosquito Larvicidal and Pupicidal Activity of Tephrosia purpurea Linn. (Family: Fabaceae) and Bacillus sphaericus against, Dengue Vector, Aedes aegypti}, journal = {Pharmacognosy Journal}, volume = {9}, year = {2017}, month = {September 2017}, pages = {737-742}, type = {Original Article}, chapter = {737}, abstract = {

Objective: The bio-efficacy of Tephrosia purpurea leaf extract and bacterial insecticide, Bacillus sphaericus larvicidal activity was assessed against the first to fourth instars larvae of Aedes aegypti, under the laboratory conditions. Methods: The plant material was shade dried at room temperature and powdered coarsely. T. purpurea and B. sphaericus show the various concentrations of larvicidal and pupicidal activity against various instars larvae of A. aegypti. Results: The LC50 of T. purpurea against the first to fourth instars larvae were 139.24, 176.24, 219.28, 256.27, and 326.29 ppm and the 480.72, 541.21, 580.34, 672.20, and 762.80 ppm, respectively. B. sphaericus against the first to fourth instars larvae the LC50 values were 46.16, 56.23, 69.82, 80.81 and 96.12 ppm and the LC90 values 141.68, 172.46, 184.21, 193.31 and 218.16 ppm, respectively. However, the combined treatment of T. purpurea + B. sphaericus (1:2) material shows highest larvicidal activity of the LC50 values 80.08, 82.21, 88.00, 92.21 and 98.16 ppm; The LC90 values of 108.39, 118.71, 136.75, 149.02 and 153.24 ppm, against A. aegypti in all the tested concentrations than the individuals and clearly established that there is a substantial amount of synergist act. Conclusion: The present study reported that both T. purpurea and B. sphaericus materials could serve as a potential larvicidal agent. Since, A. aegypti is a container breeder vector mosquito this user and eco-friendly and low-cost vector control strategy could be a viable solution to the existing dengue disease burden. Therefore, this study provides first report on the mosquito larvicidal activity the combined effect of T. purpurea leaf extract and B. sphaericus against as target species of A. aegypti.

}, keywords = {Aedes aegypti, Bacillus sphaericus, Dengue vector, Larvicidal activity., Tephrosia purpurea}, doi = {10.5530/pj.2017.6.116}, url = {http://fulltxt.org/article/169}, author = {Ramesh Venkadachalam and Vijayakumar Subramaniyan and Manogar Palani and Mahadevan Subramaniyan and Prabhu Srinivasan and Murugan Raji} }