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Disease model organism for Parkinson disease: Drosophila melanogaster
( Binod Aryal ),( Youngseok Lee ) 생화학분자생물학회(구 한국생화학분자생물학회) 2019 BMB Reports Vol.52 No.4
Parkinson’s disease (PD) is a common neurodegenerative disorder characterized by selective and progressive loss of dopaminergic neurons. Genetic and environmental risk factors are associated with this disease. The genetic factors are composed of approximately 20 genes, such as SNCA, parkin, PTEN-induced kinase1 (pink1), leucine-rich repeat kinase 2 (LRRK2), ATP13A2, MAPT, VPS35, and DJ-1, whereas the environmental factors consist of oxidative stress-induced toxins such as 1-methyl-4-phenyl-1, 2, 3, 6-tetrahydropyridine (MPTP), rotenone, and paraquat. The analyses of their functions and mechanisms have provided important insights into the disease process, which has demonstrated that these factors cause oxidative damage and mitochondrial dysfunction. The most invaluable studies have been performed using disease model organisms, such as mice, fruit flies, and worms. Among them, Drosophila melanogaster has emerged as an excellent model organism to study both environmental and genetic factors and provide insights to the pathways relevant for PD pathogenesis, facilitating development of therapeutic strategies. In this review, we have focused on the fly model organism to summarize recent progress, including pathogenesis, neuroprotective compounds, and newer approaches. [BMB Reports 2019; 52(4): 250-258]
Binod Prasad Luitel,Ho-Cheol Ko,On-Sook Hur,Ju-Hee Rhee,Hyung-Jin Baek,Kyoung-Yul Ryu,Jung-Sook Sung 한국자원식물학회 2017 한국자원식물학회지 Vol.30 No.3
Morphological variation between cultivated and weedy types of Perilla frutescens var. frutescens and P. frutescens var. crispa were studied in 327 germplasm by examining 17 morphological characters. The germplasm between the two varieties were varied for their qualitative and quantitative characters. The seed coat color of cultivated P. frutescens var. frutescens is commonly light brown and brown while deep brown color was observed in the weedy type P. frutescens var. frutescens and P. frutescens var. crispa. The leaf size, cluster length, plant height, flower number per cluster and seed weight in cultivated P. frutescens var. frutescens were significantly (P<0.05) different from weedy type P. frutescens var. frutescens and P. frutescens var. crispa. The cultivated P. frutescens var. frutescens exhibited significantly higher plant height (158.6 ㎝) compared to the weedy P. frutescens var. crispa (133.8 ㎝). Likewise, seed weight was significantly higher in cultivated (1.9 g) than in the weedy type of P. frutescens var. frutescens (1.6 g) and P. frutescens var. crispa (1.4 g). Principal component analysis (PCA) result showed that the first and second principal component cumulatively explained 86.6% of the total variation. The cultivated type P. frutescens var. frutescens and its weedy accessions were not clearly separated with P. frutescens var. crispa by PCA. Hence it requires the use of molecular markers for better understanding of their genetic diversity.
Investigation of Secure Framework for Multipath MANET
Binod Vaidya,Dong-You Choi,JongAn Park,SeungJo Han 보안공학연구지원센터 2008 International Journal of Software Engineering and Vol.2 No.4
A wireless multihop ad hoc network is emerging as an important area for new developments in the ubiquitous network. Although ad hoc network is attractive solution, there are still some challenges in robustness and security issues. In this paper, we have depicted a secure framework for multipath routing in wireless multihop network, which is complete solution for end-to-end security for multpath wireless multihop network. We have analyzed the performance the proposed framework.
Investigation of Secure Framework for Multipath MANET
Binod Vaidya,Dong-You Choi,JongAn Park,SeungJo Han 보안공학연구지원센터 2008 International Journal of Security and Its Applicat Vol.2 No.4
A wireless multihop ad hoc network is emerging as an important area for new developments in the ubiquitous network. Although ad hoc network is attractive solution, there are still some challenges in robustness and security issues. In this paper, we have depicted a secure framework for multipath routing in wireless multihop network, which is complete solution for end-to-end security for multpath wireless multihop network. We have analyzed the performance the proposed framework.
Binod Prasad Luitel,강원희 한국원예학회 2013 Horticulture, Environment, and Biotechnology Vol.54 No.2
The in vitro androgenic response of minipaprika F1 hybrid cv. Vine sweet (red, yellow, and orange form)was investigated using Dumas de Vaulx (CP) and Murashige and Skoog (MS) culture media to ascertain the effectiveness of androgenesis in haploid production. The frequency of callus and embryo formation varied in anther cultures of all minipaprika forms in both culture media. Anthers in both culture media responded to form the callus without regeneration in all minipaprika forms. The anthers of ‘Vine sweet-yellow’ produced 62.5% and 46.7% normal embryo in CP and MS medium, respectively. ‘Vine sweet-yellow’ produced almost four fold more normal-looking embryos than ‘Vine sweet-red’ in both culture media, and ‘Vine-sweet orange’ showed low androgenic response to anther culture. The anthers cultured in CP medium gave more normal embryo in all minipaprika forms as compared to MS medium. Among a total of 51 embryos transferred to growth regulator free MS medium for regeneration, 45plants were regenerated. Flow cytometry analysis revealed that 44.5%, 42.4%, and 33.3% plants were haploids, and 55.5%, 57.6%, and 66.7% plants were spontaneous diploids in red, yellow and orange forms, respectively. The chromosome number of haploid plant was 12 and that of spontaneous diploid was 24. Stomata characters and chloroplast count in the guard cell of leaf stomata were also found to be reliable and simple method to analyze the ploidy level of regenerated plants. The spontaneous diploids confirmed as doubled haploids (DHs) following the self-pollination. The obtained DH and haploid plants from anther culture would be the valuable breeding materials for heterosis breeding.
Binod Prasad Luitel,Taek Jong Lee,Tserendendev Oyuntugs,Won Hee Kang 한국원예학회 2010 Horticulture, Environment, and Biotechnology Vol.51 No.5
A study was undertaken to investigate the optimum planting bed size and growth containers using masato soil on fresh yield of pepper cultivars in the production space of greenhouse at Hwacheon from June to October, 2009. Results showed that cultivars significantly affected on plant height, total fruit number, marketable fruit number (%) plant and total yield per plant whereas bed size significantly affected the plant height, marketable fruit number (%), marketable and non-marketable weight (g) per plant. Planting transplants at 60㎝ bed width gave the highest total fruit number (61.8), marketable fruit number (58.3%) and weight (1,119.4 g) per plant. Growth containers significantly affected the total fruit number, marketable and non-marketable fruit number (%) and total fruit yield (g) per plant. ‘Chungyang’ and ‘Nokkwang’ grown on plastic pot gave higher total fruit number, marketable fruit number percentage and total yield per plant but ‘Special’, ‘Minipaprika’ and ‘Pimiento’ grown in Styrofoam trays significantly gave higher total fruit (no), marketable fruit number (%) and total yield (g) per plant. Hence, in masato soil, 60cm planting bed width in Styrofoam trays can be used to obtain better yield in peppers as well as to optimize the production space in plastic house.
Effects of Long-term Use of Depo-medroxyprogesterone Acetate on Lipid Metabolism in Nepalese Women
Binod Kumar Yadav,Rajesh Kumar Gupta,Prajwal Gyawali,Rojeet Shrestha,Bibek Poudel,Manoj Sigdel,Bharat Jha 대한진단검사의학회 2011 Annals of Laboratory Medicine Vol.31 No.2
Various synthetic progestogens that are used as contraceptives have been reported to influence lipid and lipoprotein fractions differently. Depo-medroxyprogesterone acetate (DMPA), a synthetic progestogen, is used by Nepalese women as a contraceptive agent. Our study aims to determine the effects of long-term use of DMPA on lipid metabolism. We performed this study on 60 healthy Nepalese women who had been using DMPA for more than 2 yr and age- and weight-matched control subjects who were not using hormonal contraceptives. Fasting blood samples were collected from the subjects for the estimation of total cholesterol (TC) and triglyceride (TG) levels, and the levels of high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were estimated using the Friedewald’s equation. TC and LDL-C levels in DMPA users were significantly higher than those in non-users. Our study concluded that DMPA use induces lipid metabolism changes that can increase the risk of cardiovascular diseases.