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Development Prospects: An Analysis of Opportunities and Challenges of Sri Lanka
Silva Jayawardena(Silva Jayawardena ) 아시아사회과학학회 2023 Jornal of Asia Social Science Vol.10 No.2
This paper analyzes the development prospects of a country and identifies the opportunities and challenges that it faces in achieving sustainable economic growth. Specifically, this research focuses on the economic development prospects of Sri Lanka and examines the country's strengths and potential growth areas. Through a comprehensive analysis of Sri Lanka's economic history and current state, this paper identifies the key opportunities and challenges to Sri Lanka's economic development, including the tourism industry, agriculture, and manufacturing. The paper also discusses policy measures and initiatives that can support economic development in these areas. Finally, the paper concludes with a summary of key findings and implications for Sri Lanka's economic development prospects.
Jayawardena, Thilina U.,Sanjeewa, K.K. Asanka,Kim, Hyun-Soo,Lee, Hyo Geun,Wang, Lei,Lee, Dae-Sung,Jeon, You-Jin The Korean Society of Fisheries and Aquatic Scienc 2020 Fisheries and Aquatic Sciences Vol.23 No.3
Background: The present study investigates the potent skin whitening ability of ethanol extract from the brown alga, Padina boryana (PBE) which was collected in the shores of Fulhadhoo Island, the Maldives, and its specific pathways of action. The effect of PBE which contains a rich amount of polyphenols was evaluated using B16F10 murine melanoma cells and provides insight to the underlying mechanisms with reference to the inhibition of melanin formation. Methods: Melanin synthesis and cellular tyrosinase inhibition were assessed in the α-MSH-stimulated melanocytes. Melanogenic pathway-related protein expressions were investigated via Western blotting. ERK 42/44 was particularly examined considering its involvement in the melanogenic pathway. Further, RT-qPCR techniques were involved in gene expression analysis. Results: PBE dose-dependently inhibited the cellular melanin synthesis and tyrosinase levels. Western blotting revealed the potential of PBE to downregulate microphthalmia-associated transcription factor (MITF), tyrosinase, and tyrosinase-related protein-1 and protein-2 (TRP-1 and TRP-2). Moreover, results explained the phosphorylation of ERK was sustained via PBE and hence declined the ultimate melanin synthesis. Gene expression analysis reinforced the results obtained. Conclusions: The study provides substantial evidence to express the potential of PBE to inhibit B16F10 melanoma cell melanin synthesis. Concisely, results suggest the ability of PBE to be involved in medicinal and cosmeceutical applications.
Jayawardena, Thilina U.,Fernando, I.P. Shanura,Lee, Won Woo,Sanjeewa, K.K. Asanka,Kim, Hyun-Soo,Lee, Dae-Sung,Jeon, You-Jin Elsevier 2019 International journal of biological macromolecules Vol.131 No.-
<P><B>Abstract</B></P> <P>Fucoidan, referred to as fucose containing sulfated polysaccharides (FCSP), is a polymer from brown algae cell wall that is reported to exhibit potential anti-inflammatory activity. In the present study, the fucoidans are extracted from <I>Turbinaria ornata</I> (<I>TO</I>) from the Maldives. The method involves enzyme assisted extraction and is modified in order to improve the effectiveness and purity of final product. Purified fucoidan fraction was identified as F10, and its chemical properties were verified via FTIR, <SUP>1</SUP>H NMR and monosaccharide analysis. Selected inflammatory mediators were studied to evaluate the anti-inflammatory potential using RAW 264.7 macrophages. F10 successfully inhibited NO production (IC<SUB>50</SUB> = 30.83 ± 1.02 μg mL<SUP>−1</SUP>). F10 dose-dependently down-regulated iNOS, COX-2, and pro-inflammatory cytokines including PGE<SUB>2</SUB> levels. The in vivo experiments were assisted by zebrafish embryo model. This exhibited reduction in ROS, NO expression levels. To our knowledge, this is the first report to illustrate potential anti-inflammatory activity of FCSPs' extracted from the brown algae <I>T. ornata</I>. Concisely, the results suggest that fucoidan purified from <I>T. ornata</I> increases the macrophage cellular and zebrafish embryo resistance against LPS-induced inflammation. Based on the observations, the fucoidans are promising candidates to be used in the pharmaceutical and cosmeceutical sectors.</P>
( Priyankara Jayawardena ),( Gaveshika Abeyrathne ),( Damayanthi Idampitiya ),( Deshapriya Ananda Wijewickrama ) 대한내과학회 2014 대한내과학회 추계학술발표논문집 Vol.2014 No.1
Background: Dengue Haemorrhagic Fever (DHF) is the commonest complication in Dengue. Early identifi cation of plasma leakage in DHF is very important to prevent patients from going into shock. Rising haematocrit (HCT) is the commonest parameter used to detect DHF. However, no data is available for dengue in pregnancy. Methods: Retrospective observational study was conducted on all pregnant Dengue patients admitted to two hospitals in Colombo during 2013 to identify parameters useful in diagnosing DHF. Dengue infection was confi rmed by positive serology; DHF by Ultra Sound Scan (USS). Results: 58 qualifi ed for the study. Mean age was 28.45(SD: 5.573) yrs. 32(55.2%) had Dengue fever (DF) while 26(44.8%) had DHF. All had fever. 86.2% had myalgia. Hepatic tenderness, persistent vomiting and postural dizziness were commoner with DHF (81.8%, 100% & 70% respectively). Temperature, pulse rate and urine output had no signifi cant differences between DF and DHF. The mean lowest platelet count in DF was 90.94 while in DHF was 37.81 (p<0.000). Both AST and ALT levels were higher in DHF. PT/INR (6.8%) and APTT (8.6%) were elevated in both DF & DHF. Of the 32 DF patients, 19 (59%) had HCT rise of <10%, and other 13(40.6%) had HCT rises between 11% to 19%. Of the 26 DHF patients, 3 (11.5%) had HCT rise of <10%, 12 (46.2%) had HCT rises between 11% to 19% while 11 had HCT rise of >20%. Only one patient went into shock. All patients recovered fully. Conclusions: Lower platelet count and higher ASOT & ALT were in favour of DHF. HCT changes are helpful to diagnose DHF only when it is >20%. However, lesser changes don`t exclude the possibility of DHF. Hence, we recommend that USS should be used routinely in all pregnant patients to diagnose DHF.
Thilina U. Jayawardena,K. K. Asanka Sanjeewa,김현수,이효근,Lei Wang,이대성,전유진 한국수산과학회 2020 Fisheries and Aquatic Sciences Vol.23 No.1
Background: The present study investigates the potent skin whitening ability of ethanol extract from the brown alga, Padina boryana (PBE) which was collected in the shores of Fulhadhoo Island, the Maldives, and its specific pathways of action. The effect of PBE which contains a rich amount of polyphenols was evaluated using B16F10 murine melanoma cells and provides insight to the underlying mechanisms with reference to the inhibition of melanin formation. Methods: Melanin synthesis and cellular tyrosinase inhibition were assessed in the α-MSH-stimulated melanocytes. Melanogenic pathway-related protein expressions were investigated via Western blotting. ERK 42/44 was particularly examined considering its involvement in the melanogenic pathway. Further, RT-qPCR techniques were involved in gene expression analysis. Results: PBE dose-dependently inhibited the cellular melanin synthesis and tyrosinase levels. Western blotting revealed the potential of PBE to downregulate microphthalmia-associated transcription factor (MITF), tyrosinase, and tyrosinaserelated protein-1 and protein-2 (TRP-1 and TRP-2). Moreover, results explained the phosphorylation of ERK was sustained via PBE and hence declined the ultimate melanin synthesis. Gene expression analysis reinforced the results obtained. Conclusions: The study provides substantial evidence to express the potential of PBE to inhibit B16F10 melanoma cell melanin synthesis. Concisely, results suggest the ability of PBE to be involved in medicinal and cosmeceutical applications.