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- 저자 : Cho-Yee Wong (검색결과 2 건)
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Effects and Mechanism of Turmeric Vasorelaxation of the Thoracic Aorta in Hypercholesterolemic Rats
Tsz-Shan Kam,Cho-Yee Wong,Pui-Long Kwan,Wing Fat-Yiu,Sin-Ming Chiu,Shun-Wan Chan,Kit-San Yuen,Robbie Chan 한국식품영양과학회 2012 Journal of medicinal food Vol.15 No.2
An extract of Curcuma longa was tested in hypercholesterolemic rats to investigate its potential therapeutic effect on vascular conditions. Four experimental groups were used: normal diet (ND) control group, high cholesterol diet (HCD) group, and HCD subgroups supplemented with turmeric extract at 100 or 300 mg/kg of body weight (HCD100Tur and HCD300Tur groups, respectively). Turmeric extract was fed orally to animals, and dietary treatments lasted for 28 days. Hypercholesterolemia developed in the HCD, HCD100Tur, and HCD300Tur rats. Segments of the thoracic aorta were isolated, and an organ bath experiment was used to assess the vasorelaxation capability among all rats. Rats fed only HCD showed a marked decrease in acetylcholine-induced vasorelaxation compared with ND control rats. The HCD100Tur and HCD300Tur rats showed significant improvement in vasorelaxation compared with HCD rats. When vasorelaxation was induced by high concentrations of sodium nitroprusside, no differences in vasorelaxation were observed among the four groups of rats. A mechanistic study showed that HCD100Tur and HCD300Tur rats had significantly higher levels of the antioxidant enzymes superoxide dismutase and glutathione peroxidase than HCD rats. The transcript levels of heat shock protein 70 (hsp70), bcl2, bax-a, caspase (casp3), and glyceraldehyde 3-phosphate dehydrogenase in aortic tissues indicated that hypercholesterolemia significantly increased the expression of bax-a and casp3 but down-regulated bcl2 expression compared with the control group. Turmeric increased the expression of hsp70 and bcl2 but greatly reduced casp3 expression,indicating that turmeric improves vasorelaxation of the aorta in hypercholesterolemic rats by increasing antioxidant enzyme activities and likely suppressing apoptosis.
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Lam, Simon Ching,Chong, Andy Chun Yin,Chung, Jessie Yuk Seng,Lam, Ming Yee,Chan, Lai Man,Shum, Cho Yee,Wong, Eliza Yi Ni,Mok, Yat Man,Lam, Ming Tat,Chan, Man Man,Tong, Ka Ying,Chu, Oi Lee,Siu, Fong Ki 한국성인간호학회 2020 성인간호학회지 Vol.32 No.1
Purpose: This study aimed to establish the translation adequacy and examine the psychometric properties of FaceMask Use Scale (FMUS). Methods: This methodological study employed a cross-sectional design with repeatedmeasures. Phase 1 examined the equivalence and relevance of English and Chinese versions of FMUS. Phase2 examined the internal consistency, stability and construct validity. Different sample batches (213 universitystudents and 971 general public) were used appropriately for psychometric testing. The 2-phase data were collectedbetween January and April 2017. Results: In Phase 1, the semantic equivalence and relevance (item- and scale-levelcontent-validity-index=100%) was satisfactory. Furthermore, from 133 paired test-retest responses, the quadraticweighted kappa (.53~.73, p<.001) and Intraclass Correlation Coefficient (ICC=.81) between the English andChinese version of FMUS were satisfactory. In Phase 2, FMUS demonstrated satisfactory internal consistency(Cronbach’s ⍺=.80~.81; corrected item-total correlation coefficients=.46~.67) and two-week test-retest stability(ICC=.84). The known-groups method (t=3.08, p<.001), exploratory (71.10% of total variance in two-factor model)and confirmatory factory analysis (x2/df=4.02, Root Mean Square Residual=.03, Root Mean Square Error ofApproximation=.06, Goodness of Fit Index=.99, Comparative Fit Index=.99) were all satisfactory for establishingthe construct validity. Conclusion: The FMUS has an equivalence Chinese and English versions, satisfactoryreliability and validity for measuring the practice of face mask use. This poses clinical and research implications forthose community health nurses who works on respiratory protection. Further research should be conducted on the‘negligent practice’ of FMU.
KCI
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