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Highly sensitive and selective in vitro diagnostics based on DNA probes and aptamers
조헌호,이성환,반창일 한국구조생물학회 2015 Biodesign Vol.3 No.1
Medical diagnosis is very important and essential for maintaining a healthy life. In vitro diagnostics have recently been afocus of scientists and researchers because they have a number of merits over other diagnostic methods. In particular,nucleic acid-based diagnostic methods are powerful and promising techniques. In this review, various types of nucleicacid-based in vitro diagnostics are introduced. These methods can be categorized into three groups according to theiranalytical approaches. In addition, aptamer-based diagnostic methods are covered in greater detail because aptamers arepromising materials for diverse areas, not only as alternatives to antibodies but also as the core components of analyticalequipment. It is expected that in vitro diagnostics based on DNA probes and aptamers will become a valuable platformencompassing all types of diseases.
Aptamer–nanoparticle complexes as powerful diagnostic and therapeutic tools
조헌호,반창일 생화학분자생물학회 2016 Experimental and molecular medicine Vol.48 No.-
Correct diagnosis and successful therapy are extremely important to enjoy a healthy life when suffering from a disease. To achieve these aims, various cutting-edge technologies have been designed and fabricated to diagnose and treat specific diseases. Among these technologies, aptamer–nanomaterial hybrids have received considerable attention from scientists and doctors because they have numerous advantages over other methods, such as good biocompatibility, low immunogenicity and controllable selectivity. In particular, aptamers, oligonucleic acids or peptides that bind to a specific target molecule, are regarded as outstanding biomolecules. In this review, several screening techniques for aptamers, also called systematic evolution of ligands by exponential enrichment (SELEX) methods, are introduced, and diagnostic and therapeutic aptamer applications are also presented. Furthermore, we describe diverse aptamer–nanomaterial conjugate designs and their applications for diagnosis and therapy.
조헌호 ( Heonho Cho ),박석희 ( Suk Hee Park ),정규원 ( Kyu Won Jeong ) 충북대학교 산업과학기술연구소 2011 산업과학기술연구 논문집 Vol.25 No.2
Gas mileage become important in passenger car as energy cost is increased more and more due to oil shortage. Furthermore, the climate is become harsh, especially in summer. So, passengers want more comfortable room condition. In this paper in order to obtain high room air quality, a new ventilation controller is developed which can be operated by solar energy. The controller measure temperature and CO2 concentration in the passenger room. Then in case the air quality is deteriorated, it intake fresh air and blow the room air to outside automatically.
정규원(K. W. Jeong),조헌호(H. H. Cho),이태희(T. H. Lee) 한국생산제조학회 2011 한국생산제조시스템학회 학술발표대회 논문집 Vol.2011 No.4
Air Circuit Breaker is widely used in order to supply electic power to building or plant. In the ACB there are many finger module which connect electrical path or break it. The finger module is composed of several parts and assembled by human labors. In this paper, the automatic system is proposed and fabricated.
정경태 ( Kyung Tae Chung ),조헌호 ( Hyun Ho Cho ),이강록 ( Gang Rog Lee ),이우원 ( Woo Won Lee ),양주 ( Ju Yang ),김근규 ( Geun Kyu Kim ) 한국동물위생학회 1999 한국동물위생학회지 (KOJVS) Vol.21 No.4
This survey was carried out to determine 5 residual sulfonamides(sulfamerazine: SMR, sulfa-methazine: SMT, sulfamonomethoxine: SMM, sulfadimethoxine: SDM, sulfaquinoxaline SQX) in muscle of mouse. For this investigation, pertaining detection wavelength, residual levels and residual times in muscle of mouse were summarized as follows; 1. Pertaining detection wavelength of 5 residual sulfonamides(SMR, SMT, SMM, SDM, SQX) was 270nm by HPLC/UV detection. 2. After 1 day put a stop to sulfonamides administration, residual levels was 1~1.5ppm, but were not detected at day 7. 3. Withdrawal time of 5 sulfonamides were about 7 days suspectly.
김종호 ( Jongho Kim ),이경현 ( Kyunghyun Lee ),노수권 ( Su Gwon Roh ),조헌호 ( Heon-ho Jo ),소병재 ( Byungjae So ),김희진 ( Heui-jin Kim ) 한국동물위생학회 2021 한국동물위생학회지 (KOJVS) Vol.44 No.1
A 23-month-old Holstein cattle showed excess salivation and reluctance of walking and suddenly died after forced sudden movements. Grossly, numerous fibrous adhesions were present within cranial abdominal cavity including the reticulum and diaphragm and thoracic cavity involving lungs, pericardial sac, and heart. A perforation made by a 10 cm-long sharp-ended wire was detected in the reticulum. Histopathologically, fibrous suppurative epicarditis and myocardial necrosis were observed. Fibrosis with neovascularization were found in lungs, spleen, and liver. And granulomatous reticulitis was observed. For differential diagnosis, no pathogenic bacteria were detected through microbiological tests and PCR results were also negative for bovine susceptible pathogenic antigens. Based on the gross and histopathological examination, we diagnosed this case as chronic traumatic pericarditis. Cattle are inquisitive and prone to swallow various kinds of metallic foreign bodies since they do not use their lips. Therefore, avoiding ingestion of metallic objects in animal feed and animal areas by careful environmental management of farms is required and farmers should give the adequate minerals and vitamins into the feeds not to lick or shallow foreign bodies in case of mineral deficiency. For veterinary practitioners, physical examination, blood tests, and diagnostic imaging (X-ray and Ultrasonography) are required for an exact diagnosis. Furthermore, placing the magnets in rumen would be effective for prophylactic administrations.