지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수3
2018
PART Ⅰ. Protective Effect of Samultang and Its Four Herbal Plants from Reactive Oxygen species under in Vitro and Cellular System 1Abstract 11. Introduction 22. Materials and methods 32.1. Preparation of samples 32.2. Instruments and reagents 32.3. 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging assay 42.4. Hydroxyl radical (·OH) scavenging assay 42.5. Nitric oxide (NO) radical scavenging assay 52.6. Cell culture 52.7. MTT assay 52.8. Measurement of reactive oxygen species (ROS) production 62.9. Statistical analysis 63. Results 73.1. DPPH, ·OH, and NO radical scavenging activity of Samultang 73.2. Effects of Samultang on cell viability in H2O2-treated SH-SY5Y cells 113.3. Effects of Samultang on ROS production in H2O2-treated SH-SY5Y cells 113.4. DPPH and ·OH radical scavenging activity of four herbal plants in Samultang 144. Discussion 175. Conclusion 186. References 20PART Ⅱ. Protective Role of Paeonia lactiflora (PL) and Paeoniflorin (PF) against Oxidative Damage via Regulation of Apoptotic Pathway in C6 Glial Cells 25Abstract 251. Introduction 262. Materials and methods 272.1. Preparation of samples 272.2. Instruments and reagents 282.3. Cell culture 282.4. MTT assay 292.5. Lactate dehydrogenase (LDH) release assay 292.6. Dichloro-dihydro-fluorescein diacetate (DCFH-DA) assay 292.7. Measurement of superoxide dismutase (SOD) activity 302.8. Western blotting 302.9. Statistical analysis 313. Results 313.1. Effects of PL and PF on cell viability in H2O2-induced C6 glial cells 313.2. Effects of PL and PF on LDH release in H2O2-induced C6 glial cells 313.3. Effects of PL and PF on ROS production in H2O2-induced C6 glial cells 343.4. Effects of PL and PF on SOD activity in H2O2-induced C6 glial cells 343.5. Effects of PL and PF on the levels of Bax/Bcl-2 protein expression in H2O2-induced C6 glial cells 383.6. Effects of PL and PF on the levels of cleaved caspase-9, -3, and cleaved PARP protein expression in H2O2-induced C6 glial cells 384. Discussion 415. Conclusion 446. References 45PART Ⅲ. Protective Effects and Mechanisms of PL and PF on Oxidative Stress Induced Apoptosis and Amyloid Precursor Protein (APP) Processing in Neuronal Cells 50STUDY 1. Protective Effects of PL and Its Active Compound, PF, against Neuronal Oxidative Stress in H2O2-treated SH-SY5Y Cells 50Abstract 501. Introduction 512. Materials and methods 532.1. Preparation of samples 532.2. Instruments and reagents 532.3. ·OH scavenging assay 532.4. NO radical scavenging assay 542.5. Cell culture 542.6. MTT assay 552.7. Measurement of intracellular ROS levels 552.8. LDH release assay 562.9. Hoechst 33342 staining 562.10. Western blotting 562.11. Statistical analysis 573. Results 583.1. ·OH and NO radical scavenging activities of PL and PF 583.2. Protective effects of PL and PF on H2O2-induced cell death in SH-SY5Y cells 583.3. Inhibitory effects of PL and PF on H2O2-induced intracellular ROS levels in SH-SY5Y cells 613.4. Protective effects of PL and PF on H2O2-induced LDH release in SH-SY5Y cells 613.5. Anti-apoptotic activities of PL and PF against H2O2 by staining with Hoechst 33342 in SH-SY5Y cells 643.6. Effects of PL and PF on H2O2-induced caspase-3, -9, and PARP activation in SH-SY5Y Cells 643.7. Effects of PL and PF on H2O2-induced Bcl-2/Bax protein expression in SH-SY5Y Cells 674. Discussion 695. Conclusion 736. References 74STUDY 2. Neuroprotective Effects and Underlying Mechanisms of PL and PF against Aβ25-35-induced Neurotoxicity in SH-SY5Y Cells 85Abstract 851. Introduction 862. Materials and methods 882.1. Preparation of samples 882.2. Instruments and reagents 882.3. Cell culture 892.4. MTT assay 892.5. LDH release assay 892.6. Measurement of ROS production 902.7. Hoechst 33342 staining 902.8. Western blotting 912.9. Statistical analysis 913. Results 913.1. Effects of PL and PF on cell viability in Aβ25-35-treated SH-SY5Y cells 913.2. Effects of PL and PF on LDH release in Aβ25-35-treated SH-SY5Y cells 923.3. Effects of PL and PF on ROS production in Aβ25-35-treated SH-SY5Y cells 923.4. Effects of PL and PF on morphological changes and DNA condensation in Aβ25-35-treated SH-SY5Y cells 963.5. Effects of PL and PF on the amyloidogenic pathway in Aβ25-35-treated SH-SY5Y cells 964. Discussion 1005. Conclusion 1036. References 105SUMMARY AND CONCLUSION 113ABSTRACT (In Korean) 115
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