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상급종합병원 간호사의 인공심박동기 관련 지식과 교육요구도
하지혜,강숙정 병원간호사회 2018 임상간호연구 Vol.24 No.2
Purpose: This study aimed to examine nurses’ knowledge levels and educational needs related to an artificial pacemaker. Methods: Participants were 100 nurses working in cardiovascular departments from two university hospitals in Seoul. This study was a descriptive study using a survey for estimating knowledge levels and educational needs related to an artificial pacemaker among nurses. Data were analyzed by SPSS 23.0 program using frequency, percentage, mean and standard deviation, t-test, and ANOVA. Results: Nurses’ knowledge levels were significantly different depending on working units (F=3.32, p=.014) and years of clinical experience (F=2.85, p=.042). Nurses who received education about an artificial pacemaker were higher in the knowledge level of complications after an implantation procedure (t=3.45, p<.001) than nurses who did not receive the education. Conclusion: Discharge education is critical for patients with artificial pacemaker implantation to go back to their daily activities. When developing artificial pacemaker education program for hospital nurses, factors such as nurses’ working department and years of clinical experience years and updated information of an artifical pacemaker need to be considered.
하지혜,강헌일,은근,이재현,김동근,최인수 한국식물병리학회 2016 식물병연구 Vol.22 No.3
To select resistant oil seed crops against two species of root-knot nematodes, Meloidogyne incognita and M. arenaria, 10 cultivars of sesame (Sesamum indicum L.) and 10 cultivars of perilla (Perilla frutescens var. japonica) were screened in greenhouse pot test. All sesame cultivars tested were resistant to M. incognita but susceptible to M. arenaria. While, perilla was resistant to both Meloidogyne species. Therefore, perilla cultivars could be used as rotation crop in greenhouse infested with both M. incognita and M. arenaria. But, sesame cultivars only can be used as a rotation crop in greenhouse infested with M. incognita but not for M. arenaria.
First Report of an Unrecorded Nematode-trapping Fungus, Arthrobotrys sinensis in Korea
하지혜,강헌일,강항원,김동근,이동운,김용철,최인수,Ha, Jihye,Kang, Heonil,Kang, Hangwon,Kim, Donggeun,Lee, Dongwoon,Kim, Yongchul,Choi, Insoo Korean Society of Applied Entomology 2019 한국응용곤충학회지 Vol.58 No.1
선충포식성 곰팡이는 선충을 포획하기 위하여 다양하고 특수한 기관을 사용한다. 국내 성주지역의 참외 경작지 뿌리 주변의 토양에서 3차원 접착 고리를 형성하여 선충을 포획하는 곰팡이를 분리하였다. 곰팡이의 미세형태 구조를 관찰한 결과 분생포자병은 직립형으로 길이는 $290{\sim}528(342.8){\mu}m$으로 길었으며, 계란형의 $30.5{\times}20.3{\mu}m$ 크기를 가진 1~3개의 분생포자를 형성하였다. 균주의 rDNA의 5.8 S 영역의 염기서열을 분석한 결과, Arthrobotrys속의 계통군에 속하였으며, 특히 Arthrobotrys sinensis와 99%의 유사성을 보였다. 형태적 특징과 분자생물학적 계통 분석을 바탕으로 본 균주는 A. sinensis로 확인되었으며, 이는 국내 미기록종으로 식물기생성선충의 생물학적 조절을 위한 하나의 자원이 될 수 있다. Nematode-trapping fungi use various specialized traps to capture nematodes. A fungus that can capture nematodes in three dimensional adhesive networks was isolated from the soil around the root of Cucumis melo L. (Oriental melon) in Seongju, Korea. The conidiophores were found to be septate, hyaline, erect and $290-528(342.8){\mu}m$ high. It produces obovoid shape and 1-3 septate (commonly 2-septate) conidia with a size of $30.5{\times}20.3{\mu}m$. Molecular analysis of 5.8 S rDNA displayed 99% similarity to Arthrobotrys sinensis. On the basis of morphological, morphometric and molecular studies, the fungus was identified as A. sinensis. It is the first report in Korea which can be one of biological control resource of plant-parasitic nematode.
천연 수용성 설포라판의 나노입자화를 통한 면역 활성 증진
하지혜,한재건,정향숙,오성호,권민철,최영범,고정림,이현용 한국약용작물학회 2008 한국약용작물학회지 Vol.16 No.6
This study was performed to investigate improving immune activities of natural water-soluble sulforaphane extracted from Brassica oleracea var. italica by nano encapsulation process. The nanoparticles of the sulforaphane extracted with ultrasonification process at 60℃ promoted human B and T cell growth, about 7~35% compared to the control. The secretion of IL-6 and TNF-α from T cells were also enhanced as 2.6×10-4pg/cell and 2.1×10-4 pg/cell, respectively, by the adding nano samples. NK cell activation was improved about 8%, compare to the control in adding cultured medium of T cell added nano samples. It was also found that sulforaphane extracted from B. oleracea var. italica had highly inhibitory activity on hyaluronidase as IC50 about 200 μg/ml. It can be concluded that natural water-soluble sulforaphane samples by nano-encapsulation, each size is 200 nm, extracted from B. oleracea var. italica has high immune activities through higher efficiency of bio-activation than conventional extracts.
하지혜,김철희,정향숙,김영,오성호,김승섭,정명훈,마충제,남종현,황백,최근표,박욱연,이현용 한국약용작물학회 2009 한국약용작물학회지 Vol.17 No.3
This study was performed to compare the effects of immuno-modulating activities of Rhodiola sachalinensis A. Bor. fractionized by consecutive solvent separation. The Cytotoxicity of all fractionized extracts on human kidney cell (HEK293) was lower than crude extracts. Generally, the butanol and chloroform extracts showed less cytotoxicity on about 10.07% and 9.67% than the crude extracts. For human immune B and T cell growth, chloroform fraction showed the highest cell growth compared to the control. The secretion of cytokines (IL-6, TNF-α) on human B and T cells were increased by adding chloroform extracts. Also, NK cell growth was significantly improved up to nearly 30% by adding the supernatant of B cell medium grown with the chloroform fraction. It was also found that chloroform fraction could yield higher nitric oxide production from macrophage than untreated control cells. Differentiation of HL-60 cells was increased up to 131.9% after treatment with chloroform fraction extracts, compared to the control. These results indicate that the chloroform fraction of R. sachalinensis have high immune activation activity than others fractions and the crude extracts, implying that this chloroform fractions could be used a new functional material.
유산균 발효를 통한 매자나무 수피부의 항산화 활성 증진
하지혜,서용창,최운용,김지선,김행훈,안주희,이현용 한국약용작물학회 2010 한국약용작물학회지 Vol.18 No.6
The bark of Berberis koreana Palibin was fermented by Bifidobacterium longum B6 and Lactobacillus paracasei at 37℃ for 72 hour, then extracted by water solvent at 100℃ for 180 min. Total pholyphenol and flavonoid contents were improved by fermentation process, compared to conventional water extraction. The barks of B. koreana Palibin extracts by B. longum B6 (FE-B.L.) and by L. paracasei (FE-L.P.) showed 17% and 16% cytotoxicity on human normal cell lines(HEK293) at 1.0 mg/ml of the highest concentration, respectively, which was about 3~5% lower than 20% from normal extracts (NE). DPPH radical scavenging activity of the FE-B.L. and FE-L.P. were about 73% and 75.9% higher than 56.8% of NE. The highest inhibitory potency on xathine oxidase and superoxide dismutase (SOD)-like activities were also measured as 31.9% and 61.9% by adding FE-L.P. of 1.0 mg/ml. On tyrosinase inhibition test, the FE-L.P. showed highest activity as 75.9% at 1.0 mg/ml. Generally, FE-L.P. showed higher antioxidant activities as well as higher tyrosinase inhibition activity, possibly due to high contents of total pholyphenol and flavonoid. In general, fermentation of barks of B. koreana Palibin has relatively better biological activities than normal extracts. Specifically, the extracts fermented by L. paracasei showed higher activities than that from B. longum B6.
하지혜,이승현,류수착,Ha, Ji Hye,Lee, Seung Hyun,Ryu, Su Chak 한국세라믹학회 2013 한국세라믹학회지 Vol.50 No.4
A hydroxyapatite air filter was made with hydroxyapatite powder, water and chitosan solution. The structures of the sintered HAp samples were determined by MP-XRD. Hydroxyapatite has antibacteria properties against Staphylococcus aureus, Klebsiella pneumoniae and Escherichia coli. The bacteria removal rate was 99.9%. In the case of Pseudomonas aeruginosa, Colon bacterium and Listeria monocytogenes, the hydroxyapatite air filters had a clear zone which confirmed antibacteria properties. Using the microscopy, we observed that the HAp powder absorbed E. coli bacteria.
초고압 및 초음파 추출공정을 이용한 매자나무 수피의 향장활성 증진
하지혜,최운용,서용창,김지선,김영옥,차선우,김진철,이현용 한국약용작물학회 2011 한국약용작물학회지 Vol.19 No.1
This study was performed to investigate the enhancement of cosmeceutical activities of Berberis koreana bark by different extraction processes. The extracts are WE (water extract at 100℃, control), USE (ultrasonification for 1 hours at 60℃ with water), HPE (high pressure for 5 minutes at 60℃ with water) and USE + HPE (ultrasonification process for 1 hours after high pressure for 5 minutes at 60℃ with water), respectively. The cytotoxicity of the extracts was in the range of 24.02~26.94% at 1.0 mg/ml concentration. The USE + HPE showed the lowest cytotoxicity. Compared to the WE, total phenolic and flavonoid contents in the USE + HPE increased to 121.5% and 154.2%. The USE + HPE showed the highest activity at 1.0 mg/ml concentration in 1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging, inhibition activity of xanthine oxidase and superoxide dismutase (SOD)-like test, respectively. Tyrosinase inhibition of WE, USE, HPE and USE + HPE at 1.0 mg/ml concentration was measured as 17.72, 19.62, 22.83 and 24.16%, respectively. Hyaluronidase inhibition activities of the USE + HPE were higher than 20.8%~29.5% of the WE. Our results suggested that the extracts from ultrasonification process after high pressure extraction has relatively high cosmeceutical activities, and that the bark of Berberis koreana could be considered as a candidate of new functional cosmetic agents.