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콜라겐 유도 관절염 마우스 모델에서 편백나무추출오일의 치료 효과

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S-689

콜라겐 유도 관절염 마우스 모델에서 편백나무추출오일의 치료 효과

가톨릭대학교 의과대학 내과학교실

*최영희, 이진희, 윤종현

배경: 편백나무에서 추출한 오일(Essential oil extracted from C. obtusa, EOCO)은 항균력 및 항염증작용이 있다고 알려져 있다. 이에 동물 관절염 모델인 콜 라겐 유도 관절염 (Collagen-induced arthritis, CIA) 마우스 모델을 이용하여 EOCO가 관절염에 미치는 영향을 연구하고자 한다. 방법: DBA1/J 마우스에 제 II형 콜라겐을 주입하여 염증성 관절염을 유도한 후, 디메틸 술폭시드에 용해한 EOCO를 주 3회씩 5주 동안 복강 내에 주사하였다. 관절염의 중증도는 임상적, 조직학적 매개변수로 조사하였다. 혈청 내 항콜라겐 항체 농도와 인터페론감마는 효소면역분석법(ELISA)으로, 관절 내 인터루킨-17의 발현은 면역조직화학 법으로, EOCO가 Th17 세포와 자연살해세포(NK cell)에 미치는 효과는 유동세포계측법(flow cytometry)으로 분석하였다. 결과: EOCO를 주입한 마우스에 서 대조군에 비해 관절의 발적, 부종 및 관절염 지수가 낮게 나타났으며, 조직학적으로 관절의 활막 증식, 염증, 골 파괴가 감소했다(p<0.001). 또한 혈청 내 항콜라겐 항체 농도 및 관절 내 인터루킨-17의 발현이 EOCO를 주입한 마우스에서 감소하였다. EOCO는 분리된 CD4 T 세포에서가 아닌 전체 비장세포에서 Th17 세포의 분화를 억제하였다(p<0.05). 그러나 측정된 인터페론감마 레벨은 두 그룹간에 차이가 없었다. EOCO는 자연살해세포(NK cell)에서 그랜자임 (granzyme) B와 퍼포린(perforin)의 생산을 증가시켰다. 고찰: 본 연구결과는 EOCO가 Th17 세포의 분화를 억제하여 항관절염 효과가 있음을 나타내며, 이 는 EOCO에 의한 자연살해세포(NK cell)의 활성 증가와 연관이 있는 것으로 보인다. 결론적으로, EOCO가 염증성 관절염에서 치료적 물질로서 가능이 있을 것으로 생각된다.

S-690

Decreased Lower Extremity Muscle Mass is related with knee pain and amply severity of knee pain.

1Department of Internal Medicine and Institute of Health Science, Gyeongsang National University School of Medicine, Jinju,

2Department of Internal Medicine, Gyeongsang National University Changwon Hospital, Changwon, Republic of Korea

*Hye Ree Kim1, MinYoung Kim1, Young Sun Suh2, Hyun-Ok Kim2, Sang-Il Lee1, Yun-Hong Cheon1

Objective: This study aimed to identify the prevalence and risk factors of knee pain and radiographic knee OA (RKOA) and to investigate whether de- creased lower extremity muscle mass (DLEM) might related with knee pain and also its severity. Methods: We performed a cross-sectional study us- ing data from 3,278 participants who aged over 50 and took dual x-ray absorptionmetry, plain knee radiographs and knee pain questionnaire in the fifth Korean National Health and Nutrition Examination Survey. Lower extremity muscle mass (LEM) was defined as the sum of the fat-free soft tissue mass of legs, and lower extremity muscle mass index (LMI) was calculated as LEM/body weight (%). DLME was defined as an LMI was below 2 standard deviations from mean in sex-matched young reference group. Categorical variables were presented as number (weighted %) to produce nationally rep- resentative data. Results: The prevalence of knee pain and RKOA were 22% (n=721) and 34.7% (n=1,234) respectively. Female (OR 1.5, 59% CI 1.14-1.98), old age (OR 1.02, 95% CI 1.00-1.03), lower education (OR 1.64, 95% CI 1.30-2.08), bed rest (OR 2.14, 95 CI 1.53-3.00), RKOA (OR 1.77, 95% 1.42-2.22), stiffness (OF 12.91, 95% CI 9.52-17.51), and DLEM (Or 1.47, 9% CI 1.02-2.13) were significantly related knee pain after multi- variable logistic regression analysis. We found participants with RKOA and DLEM simultaneous had complained more severe pain (pain score 7.18±2.48) than those with participants with knee pain without RKOA and DLEM (5.02±2.44), those with only RKOA (6.29±2.50), and those with DLEM (6.78±2.18) (p<0.001). These result remained after adjustment for age, sex, education, smoking, vitamin D insufficiency, osteoporosis, treat- ment history, stiffness, obesity, bed rest, waist circumference. Conclusions: Prevalence of knee pain and RKOA were high in general Korean population. Decreased lower extremity muscle mass was an independent risk factor for knee pain and it did amplify knee pain severity. This finding supports current guidelines that emphasized the importance of muscle mass and strength to reduce knee pain.

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