• Proceedings of the Korean Society of Applied Pharmacology
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• 2006.04a
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• pp.109-120
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• 2006

Alzheimer's disease (AD) is an age-related neurodegenerative disorder. The pathological hallmarks of AD are senile plaques and neurofibrillary tangles in the brain. Major component of senile plaques is amyloid beta peptide(A$\beta$) which is derived from amyloid precursor protein (APP). A$\beta$ is generated through the sequential cleavage of App by $\beta$ - and $\gamma$-secretases. $\beta$-secretase excises the ectodomain of APP ($\beta$-APPs) to leave a 99-amino acid long C-terminal fragment (APP-C99-CTF) in the membrane. $\gamma$-secretase then cleaves this membrane-tethered APP-CTF within the transmembrane domain, so releasing A$\beta$ peptides and APP-intracellular domain (AICD). Thus, $\beta$- and $\gamma$-secretase are regarded to perform the key steps in the pathogenesis of AD and have become important therapeutic targets in the prevention and treatment of AD. Enormous efforts have been focused to develop the amyloid beta related drug for cure of AD becuase A$\beta$ is believed to be one of the major causes of AD. since major pharmaceutical companies in world wide base compete to develop new drug for AD, we have to be careful to choose the drug target to success the tough race. In the present talk, possible drug targets based on basic research results will be discussed. These molecules should be a good target for development of new drug for AD and be less competitive to have a good shape for world wide competition.

• Journal of Korean Neurosurgical Society
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• v.57 no.3
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• pp.152-158
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• 2015

Objective : The purpose of this study to develop new deep-brain stimulation system for long-term use in animals, in order to develop a variety of neural prostheses. Methods : Our system has two distinguished features, which are the fully implanted system having wearable wireless power transfer and ability to change the parameter of stimulus parameter. It is useful for obtaining a variety of data from a long-term experiment. Results : To validate our system, we performed pre-clinical test in Parkinson's disease-rat models for 4 weeks. Through the in vivo test, we observed the possibility of not only long-term implantation and stability, but also free movement of animals. We confirmed that the electrical stimulation neither caused any side effect nor damaged the electrodes. Conclusion : We proved possibility of our system to conduct the long-term pre-clinical test in variety of parameter, which is available for development of neural prostheses.

• The Plant Pathology Journal
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• v.31 no.1
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• pp.12-24
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• 2015

Rice Blast is the most devastating disease causing major yield losses in every year worldwide. It had been proved that using resistant rice varieties would be the most effective way to control this disease. Molecular screening and genetic diversities of major rice blast resistance genes were determined in 192 rice germplasm accessions using simple sequence repeat (SSR) markers. The genetic frequencies of the 10 major rice blast resistance genes varied from 19.79% to 54.69%. Seven accessions IC337593, IC346002, IC346004, IC346813, IC356117, IC356422 and IC383441 had maximum eight blast resistance gene, while FR13B, Hourakani, Kala Rata 1-24, Lemont, Brown Gora, IR87756-20-2-2-3, IC282418, IC356419, PKSLGR-1 and PKSLGR-39 had seven blast resistance genes. Twenty accessions possessed six genes, 36 accessions had five genes, 41 accessions had four genes, 38 accessions had three genes, 26 accessions had two genes, 13 accessions had single R gene and only one accession IC438644 does not possess any one blast resistant gene. Out of 192 accessions only 17 accessions harboured 7 to 8 blast resistance genes.

• Herbal Formula Science
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• v.23 no.2
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• pp.245-259
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• 2015

Objectives : This study is intended to establish the areas of use of the major effects of Coptidis Rhizoma-Evodiae Fructus Pair in the Prescriptions. Methods : Prescriptions that include both Coptidis Rhizoma and Evodiae Fructus have been selected with the use of programs offered by http://www.koreantk.com, http://youl.net/data . This study compared and analyzed the main effects of the selected prescriptions. Results : Prescriptions that work on upper digestive system tend to have Coptidis Rhizoma to Evodiae Fructus ratio of 2:1~10:1, and Prescriptions that work on lower digestive system tend to have ratio of 1:1. When Coptidis Rhizoma takes up 50% or more of the total dose of the prescriptions, these prescriptions tend to have major effect on the upper digestive system, and when it takes less than 50%, these tend to have major effect on the lower digestive system on the contrary. Conclusions : The prescriptions based on Coptidis Rhizoma-Evodiae Fructus Pair have a tendency to treat digestive problems caused by mass of fever in Liver-system. On this basis, further studies are expected to unveil the effectiveness of these prescriptions on adult diseases.

• Nuclear Medicine and Molecular Imaging
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• v.40 no.2
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• pp.113-119
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• 2006

Coronary artery disease is a loading cause of morbidity and mortality across the world. Percutaneous coronary intervention has become the major technique of revascularization. However, restenosis remains a major limitation of this procedure. Recently the need for repeat intervention due to restenosis, the most vexing long-term failure of percutaneous coronary intervention, has been significantly reduced owing to the introduction of two major advances, intracoronary brachytherapy and the drug-eluting stents. Intracoronary brachytherapy has been employed in recent years to prevent restenosis lesions with effective results, principally in in-stent restenosis. Restenosis is generally considered as au excessive form of normal wound healing divided up in precesses: elastic recoil, neointimal hyperplasia, and negative vascular remodeling. Restenosis has previously been regarded as a proliferative process in which neointimal thickening, mediated by a cascade of inflammatory mediators and other factors, is the key factor. Ionizing radiation has been shown to decrease the proliferative response to injury in animal models of restenosis. Subsequently, several randomized, double blind trials have demonstrated that intracoronary brachytherapy can reduce the rates of both angiographic restenosis and clinical event rates in patients undergoing percutaneous coronary intervention for in stent restenosis. Some problems, such as late thrombosis and edge restenosis, have been identified as limiting factors of this technique. Brachytherapy is a promising method of preventing and treating coronary artery restenosis.

• Journal of Korean Neurosurgical Society
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• v.30 no.8
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• pp.1019-1022
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• 2001

Although brain metastasis of renal cell carcinoma is a major cause of death in Von Hippel-Lindau disease(VHL), it is not easy to distinguish local recurrence of hemangioblastoma from distant metastasis. In addition, hemangioblastoma has several characteristics suitable for recipient of "tumor-to-tumor metastasis". Authors report a case of Von Hippel-Lindau disease that had metastases of renal cell carcinomas.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.sup2
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• pp.7-9
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• 2016

In order to help smokers quit easier, China has started to provide quitline service since 2004. There are two models for Chinese quitline service-the National Quitline Model, which provides only cessation service to smokers, and the 12320 Hotline Model, which integrates cessation counseling into public health hotline service and is currently adapted in public health hotlines in 28 provinces. A protocol of 4 counseling calls is used by 12320 Hotline. Three-month abstinence rate for clients is about 20%. The fact that most smokers who attempted quit don't seek cessation help or quitline service is not well known by the public are major constraints for quitline service in China. Effective advocating campaign should be implemented to propagate quitline. Diverse protocols targeting different subpopulation will also need to be developed to better service the public.

• Clinical and Experimental Pediatrics
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• v.52 no.5
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• pp.513-518
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• 2009

In childhood tuberculosis, it is possible to clearly distinguish among three basic stages: exposure, infection, and disease. The incidence of tuberculosis in children is low compared with that in adults, but latent infection is a major concern because children, who are exposed to Mycobacterium tuberculosis especially early in childhood, are at increased risk of developing the disease. Younger children particularly infants have a high relative risk of miliary or meningeal disease. The clinical manifestations of childhood tuberculosis differ noticeably from those of the disease seen in adults. Adolescents with tuberculosis have different demographic and clinical features from those of adults or children. Tuberculosis in adolescents has become relatively more important as the incidence of infection in childhood has decreased.

• Genomics & Informatics
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• v.17 no.3
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• pp.24.1-24.8
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• 2019

Early environmental exposure is recognized as a key factor for long-term health based on the Developmental Origins of Health and Disease hypothesis. It considers that early-life nutrition is now being recognized as a major contributor that may permanently program change of organ structure and function toward the development of diseases, in which epigenetic mechanisms are involved. Recent researches indicate early-life environmental factors modulate the microbiome development and the microbiome might be mediate diet-epigenetic interaction. This review aims to define which nutrients involve microbiome development during the critical window of susceptibility to disease, and how microbiome modulation regulates epigenetic changes and influences human health and future prevention strategies.

• Journal of Microbiology
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• v.44 no.2
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• pp.248-253
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• 2006

Lymphocystis disease virus (LCDV) is the causative agent of lymphocystis disease. The viruses have been divided into three genotypes (genotype I for LCDV-1, II for Japanese flounder isolates, and III for rockfish isolates) on the basis of major capsid protein (MCP) gene sequences. In this study, we developed a multiplex PCR primer set in order to distinguish these genotypes. We also analyzed the MCP gene of a new LCDV isolate from the sea bass (SB98Yosu). Comparison of sequence identities between SB98Yosu and eight Japanese flounder isolates, revealed identity of more than 90.1 % at nucleotide level and 96.5% at deduced amino acid level, respectively. Phylogenetic analyses based on the MCP gene showed that SB98Yosu belongs to genotype II, along with Japanese flounder isolates. Multiplex PCR based on the MCP gene allowed us to identify these genotypes in a simple and rapid manner, even in a sample that contained two genotypes, in this case genotypes II and III.