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2019년 경북 상주 지역 환경별 참진드기 분포 조사 및 중증열성혈소판감소증후군 바이러스 검출
이재석,문경환,김영호,박예은,전지향,김채원,박시은,우지현,정여진,엄종원,이욱교,김영호,Lee, JaeSeok,Moon, KyungHwan,Kim, YeongHo,Park, Ye eun,Jeon, Ji Hyang,Kim, Chae Won,Park, Sean,Woo, Ji Hyeon,Jeong, Yeo Jin,Eom, Jong Won,Lee, Wook-Gyo 한국응용곤충학회 2020 한국응용곤충학회지 Vol.59 No.3
Ixodidae에 속하는 일부 참진드기들은 중증열성혈소판감소증후군(severe fever with thrombocytopenia syndrome; SFTS)을 비롯한 질병을 매개하는 공중보건학적으로 중요한 해충이다. 우리나라에서는 2013년 이후로 SFTS 환자 발생수가 지속적으로 증가하는 경향을 보이며, 경상북도는 전국적으로 2번째로 많은 SFTS 환자가 발생하는 지역이다. 본 연구에서는 2019년 경북 상주 지역의 진드기 분포를 조사하기 위해 시민의 생활 반경 주변을 도심 녹지지역, 관리 취약지역 및 농촌지역으로 구별하여 flagging 방법을 통해 진드기를 채집하였고, 채집 진드기내 SFTS 바이러스 보균 여부를 조사하였다. 채집된 진드기 수를 Collection Index (CI = tick number / 1h / 2 people)로 산출한 결과, 상주시 내 총 26개 지점에서 작은소피참진드기와 개피참진드기, 일본참진드기를 포함하는 총 CI 143의 진드기가 채집되었고, 그 중 작은소피참진드기가 96.5%(CI 138)로 우점종으로 확인되었다. 채집된 진드기의 약 92%(131 CI)는 인적이 드물고 시청이나 관계 당국의 관리가 이루어지지 않는 관리 취약지역에서 채집되었으나, 도심의 녹지지역와 농촌 지역에서는 8.4%(CI 12)의 진드기만 관찰되었다. 총 CI 143의 진드기를 26개 pooling 한 후 SFTS 바이러스 존재 여부를 조사하였으나, 모두 음성으로 확인되었다. 본 연구의 결과는 지역주민들로 하여금 진드기 매개 질병으로부터 안전한 생활을 하기 위한 권고 자료로 활용할 수 있을 것으로 기대된다. Several hard tick species in Ixodidae are medically important pests that transmit infectious disease including severe fever with thrombocytopenia syndrome (SFTS). In Korea, the number of SFTS patients continues to steadily increase since its first report in 2013, and Gyeongsangbuk-do (province) is the second most frequent area of SFTS patient occurrence. In order to investigate the distribution of ticks in Sangju city, we collected ticks using the flagging method from 26 sites comprising urban green area, vulnerable area of management, and rural area, and examined SFTS virus from the collected ticks in 2019. Based on Collection Index (CI = tick number / 1 h / 2 people), CI 143 ticks, including Haemaphysalis longicornis, Haemaphysalis flava, and Ixodes nipponensis, were collected; the most abundant species among the three tick species was H. longicornis (CI 138, 96.5%). Ninety two percent (CI 131) of ticks were collected in vulnerable area of management, where people cannot easily enter and are not managed by city hall, whereas only 8.4% (CI 12) were collected in the urban green area and rural area. Regarding SFTS virus detection, virus was not investigated from 26 pools containing CI 143 ticks. The results of this study are expected to be used as a recommendation for ensuring the safety of local residents from tick-borne diseases.
서로 다른 추출방식이 블랙커런드 추출물의 항산화 및 항염 효능에 미치는 영향
한인화(In Hwa Han),조진아(Jin Ah Cho),윤은성(Eun Seung Yoon),이수진(Su Jin Lee),전지향(Ji Hyang Jeon),정해진(Hae Jin Jeong),홍지수(Ji Su Hong),김경아(Kyung Ah Kim) 충북대학교 생활과학연구소 2024 생활과학연구논총 Vol.28 No.2
Background/Objectives: Blackcurrants are well-known for their high content of antioxidants and their anti-inflammatory properties, both of which contribute to various health benefits. This study aims to investigate the antioxidant and anti-inflammatory activities of 80% ethanol extracts of blackcurrant (BCEs), extracted using different methods. Methods: Blackcurrant powder was extracted by two different methods: stirring (BCE-S) and ultrasound (BCE-U). Antioxidant efficacy was assessed by measuring the total phenol content, total flavonoid content, and DPPH radical scavenging ability of the BCEs. Cell viability was determined using the WST assay in Raw 264.7 cells while the anti-inflammatory effect was evaluated by observing the expression levels of COX-2, an inflammation-related protein, through western blot analysis. Results: BCE-S and BCE-U did not exhibit significantly different total phenol content and DPPH radical scavenging ability. However, the total flavonoid content was higher in BCE-S than in BCE-U. Cytotoxicity evaluation revealed that both extracts did not show cytotoxicity at all treatment concentrations. The protein level of COX-2, increased by LPS treatment, was reduced in BCE-U but not in BCE-S. Despite the difference in total flavonoid content, there was no difference in antioxidant efficacy between the two extracts. However, BCE-U exhibited superior anti-inflammatory efficacy, suggesting variations occurred in the extract functionality based on the extraction method. Conclusion/Implications: These results provide fundamental data for establishing an efficient extraction method that can be tailored to obtain specific functionalities.