• 대한임상검사과학회지
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• 제44권3호
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• pp.103-111
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• 2012

Low-Density Lipoprotein cholesterol (LDLC) is the most important marker for the treatment of hyperlipidemia in NCEP-ATP III(National Cholesterol Education Program-Adult Treatment Panel III) guideline. Therefore, LDL cholesterol is pathologically meaningful, accurate measurement should be a top priority. Currently, LDLC is directly measured in most cases, but, the estimate is still used in mass health examination or screening test. This study is about the comparison of LDL-Cholesterol direct measurement with the estimate using various formula (Friedewald: [LDL-F=TC-HDL-TG/5], Nakajima: [LDL-N=TC-HDL-TG/4], Hattori: [LDL-H =0.94TC-0.94HDL-0.19TG], Puavilai: [LDL-P=TC-HDL-TG/6], Carvalho: [LDL-C=3(TC-HDL)/4]) for calculating more accurate value. We analyzed total cholesterol (TC), try-glyceride (TG), high-density lipoprotein cholesterol (HDLC), and LDLC levels of 210 subjects between June and November in 2011. Until now, the Friedewald formula is the most commonly used estimate for the LDLC. When Friedewald formula was applied, the correlation coefficient (r) was 0.940, showing high correlation. But, the result of the direct method was significantly different, compared with those of the Friedewald formula in triglyceride levels ${\geq}400mg/dL$(p<0.05). There was the highest correlation when we used LDL-P formula(r=0.947) in triglyceride levels <400 mg/dl. Also there was the lowest mean difference regardless of triglyceride level. Therefore, the study showed that TG/6 is more precise means of calculation than TG/5. On the other hand, the calculation of LDL-Cholesterol was underestimated, compared with direct measurement. It is necessary to have more data and modified Friedewald formula should be used for the accurate calculation.

• 한국산학기술학회논문지
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• 제16권8호
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• pp.5492-5500
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• 2015

LDL-콜레스테롤(LDL-C)은 심뇌혈관질환의 주된 교정 가능한 위험인자로서, 정확한 측정값을 임상에 적용하는 것이 중요하다. 하지만 LDL-C의 측정은 실제 측정이 아닌 Friedewald 공식에 의한 계산방법이 널리 이용되고 있다. 본 연구의 목적은 LDL-C의 Friedewald-추정값과 실측값을 비교하고, 두 방법의 LDL-C 위험수준 분류 일치도를 평가하는 것이다. 표본은 국민건강영양조사 2개년(2009년과 2010년)의 공개된 자료에서 추출되었고, 혈액 검사에서 총 콜레스테롤, HDL-콜레스테롤, 직접 측정한 LDL-C, 그리고 중성지방 중 어느 한 결측치도 없는 4,319명을 연구대상으로 하였다. 중성지방 400 mg/dL 미만일 때, Friedewald-추정값과 실측값은 높은 상관관계를 보였고 (r = 0.958, p < 0.001), 위험수준 분류 일치 백분율은 82.7%이었다. 중성지방 수준이 높을수록, 일치 백분율은 낮았다. 중성지방 수준 150 mg/dL 미만, 150-200 mg/dL, 그리고 200-399 mg/dL일 때, 일치 백분율은 각각 85.4%, 78.2%, 그리고 71.4%이었다. Friedewald 공식은 중성지방 농도 150 mg/dL 미만에서는 LDL-C를 과대평가하는 반면, 중성지방 농도 150 mg/dL 이상에서는 과소평가하는 경향이 있었다. 이에 따라 LDL-C 위험수준 분류에 있어 그 범주가 과대평가된 사람은 382명 (9.1%)인 반면, 과소평가된 사람은 348명 (8.3%)이었다. 이러한 결과는 Friedewald-추정값의 LDL-C 과소평가뿐만 아니라, 과대평가도 심각한 문제일 수 있음을 제시한다.

• Nutrition Research and Practice
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• 제6권2호
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• pp.120-125
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• 2012

The aim of this study was to investigate the influencing factors that characterize low density lipoprotein (LDL) phenotype and the levels of LDL particle size in healthy Korean women. In 57 healthy Korean women (mean age, $57.4{\pm}13.1$ yrs), anthropometric and biochemical parameters such as lipid profiles and LDL particle size were measured. Dietary intake was estimated by a developed semi-quantitative food frequency questionnaire. The study subjects were divided into two groups: LDL phenotype A (mean size: $269.7{\AA}$, n = 44) and LDL phenotype B (mean size: $248.2{\AA}$, n = 13). Basic characteristics were not significantly different between the two groups. The phenotype B group had a higher body mass index, higher serum levels of triglyceride, total-cholesterol, LDL-cholesterol, apolipoprotein (apo)B, and apoCIII but lower levels of high density lipoprotein (HDL)-cholesterol and LDL particle size than those of the phenotype A group. LDL particle size was negatively correlated with serum levels of triglyceride (r = -0.732, $P$ < 0.001), total-cholesterol, apoB, and apoCIII, as well as carbohydrate intake (%En) and positively correlated with serum levels of HDL-cholesterol and ApoA1 and fat intake (%En). A stepwise multiple linear regression analysis revealed that carbohydrate intake (%En) and serum triglyceride levels were the primary factors influencing LDL particle size ($P$ < 0.001, $R^2$ = 0.577). This result confirmed that LDL particle size was closely correlated with circulating triglycerides and demonstrated that particle size is significantly associated with dietary carbohydrate in Korean women.

• Advances in Traditional Medicine
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• 제10권2호
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• pp.59-65
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• 2010

In India, Tectona grandis is traditionally used in the treatment of diabetes mellitus and lipid disorder. In the present study, the antihyperglycemic and lipid lowering effect of ethanolic extract of bark of Tectona grandis (TG) was evaluated using alloxan induced diabetes in rats. Alloxan was given at the dose of 140 mg/kg, i.p. After induction of diabetes, TG was administered for 42 days p. o. and simultaneously different biochemical parameters like plasma glucose, liver glycogen content, serum triglyceride, cholesterol, LDL-cholesterol and HDL-cholesterol were estimated. Diabetic control showed significant increase (P < 0.01) in plasma glucose, serum triglyceride, cholesterol, LDL-cholesterol and significant decrease (P < 0.01) in serum HDL-cholesterol and liver glycogen content. Treatment with TG showed significant reduction (P < 0.01) in plasma glucose when compared with diabetic control. The elevated levels of serum triglyceride and cholesterol levels were significantly reduced (P < 0.01) by TG. TG treatment for 42 days showed significant decrease in serum LDL-cholesterol (P < 0.01) and significant increase in serum HDL-cholesterol level (P < 0.01). Moreover, diabetic control there was significant decrease in liver glycogen content which was significantly increased (P < 0.05) by treatment with TG. Hence, from the result obtained in the present study it can be concluded that Tectona grandis has the potential to treat diabetes condition and associated lipid disorder.

• 한국식품영양학회지
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• 제16권3호
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• pp.192-196
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• 2003

허리 둔부 둘레비가 0.85이상인 여성을 복부 비만으로 측정하고 8주간 계속해서 50분씩 달리기를 시행하였다 5Km의 실외 달리기 트랙을 50분간 강약 조절로 달리게 하였고, 운동을 시행한 후 체성분 변화에 대한 결과를 분석하였다. 본 연구의 결과, 8주간 운동에 의해 변화된 총 cholesterol이 LDL-C과 양의 상관관계를 보였다. (P<0.001), 허리 둔부 둘레비(WHR)는 총 cholesterol과 triglyceride의 변화량과 양의 상관관계를 보였으며(P<0.05) 허리 둔부 둘레비는 혈청 지질의 수준에 영향을 주었다. 또한 운동에 의하여 BMI와 체지방량은 유의적인 감소를 하였고 혈청지질 중 triglyceride는 역시 유의적인 감소를 보였다. 따라서 운동은 복부비만 여성에게 혈청지질 농도를 변화시켜 고지혈증이나 성인병의 유발을 감소시킬 것으로 사료된다. 한편 HDL-C과 LDL-C은 유의적인 변화를 보이지 않았으므로 장기간 운동에 의한 신체의 영향을 지속적으로 연구하는 일이 요구된다고 할 수 있다. 운동전, 혈청지질 간의 상관관계에서 총 cholesterol은 triglyceride, LDL-C과 양의 상관관계를 보였으며 운동 후 변화량을 비교한 상관관계에서도 총 cholesterol과 LDL-C은 양의 상관관계를 보였다. 허리 둔부 둘레비도 총 cholesterol과 triglyceride에 유의적인 상관성을 보여 체지방량 감소에 의하여 체형이 변화될 수 있는 가능성을 시사하였다. 복부비만 여성을 대상으로 실시한 운동은 혈청지질 농도 개선에 전반적인 효과가 있는 것으로 나타났으나 운동이 LDL-C과 HDL-C에 미치는 영향을 구체적으로 연구하기 위하여 좀 더 장기적인 연구가 지속되어야 하며, 앞으로 허리 둔부 둘레비와 심혈관 질환과의 상관성도 깊게 연구되어야 할 필요가 있다고 사료된다.

• Nutrition Research and Practice
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• 제2권1호
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• pp.13-16
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• 2008

Taurine supplementation has been shown to have an effect on lowering blood lipids in ovariectomized (OVX) rats. It therefore seemed desirable to find out whether the beneficial effect of taurine on OVX rats fed calcium-deficient diet could also be reproduced. Forty female Sprague-Dawley rats were divided into two groups. One group was OVX and the other group received a sham operation (Sham). Each rat group was further divided into the control diet and the taurine supplemented (2.0g/100g diet) diet group. All rats were fed on calcium-deficient diet and deionized water ad libitum for 6 weeks. Plasma and liver lipids were determined by using commercial kits. LDL-cholesterol concentrations were estimated with the equation of Friedewald et al. (1972). There were no significant differences in body weight gain and food intake between the control and taurine group within Sham and OVX groups, but body weight gain, food intake, and food efficiency ratio was higher in the OVX group. Concentrations of plasma total cholesterol, triglyceride, LDL-cholesterol were significantly lower in the taurine fed group of OVX rats fed Ca deficient diet, while HDL-cholesterol concentration was increased in the taurine fed group. Therefore, in this study, we examined whether taurine also prevented hypercholesterolemia induced by ovarian hormone deficiency in ovariectomized rats when they were fed a calcium-deficient diet. These results indicate that taurine may have some beneficial effects on hypercholesterolemia and hypertriglyceridemia in OVX rats fed calcium-deficient diet.

• 한국식품영양과학회지
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• 제33권8호
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• pp.1311-1319
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• 2004

우리나라에도 심혈관 질환으로 인한 사망률이 점차 증가하고 있다. 이에 본 연구에서는 채식과 심혈관 질환과기 관계를 규명하기 위한 연구의 일환으로 채식을 하는 비구니스님을 대상으로 하여 연구한 결과를 요약하면 다음과 같다. 조사대상자의 평균나이는 채식인 44.20세, 비채식인 40.52세, BMI는 각각 22.47, 21.08이었고, WHR은 0.85, 0.84였고, %BF는 28.79, 26.55였으며, 활동량은 각각 507.8 kg/day, 400.0kg/day였고, 채식인의 평균채식기간은 13.16년이었다. 조사대상자의 총 콜레스테롤, LDL-콜레스테롤, AI, 이완기 혈압 및 혈당은 비채식인이 유의적으로(p<0.01) 높았고, HDL-콜레스테롤도 비채식인이 유의적으로(p<0.05) 높았으며 심 질환 예견지수인 HDL-콜레스테롤/총 콜레스테롤비는 채식인이 유의적으로(p<0.01) 높았다. 두군 모두 중성지방, 혈청 총 콜레스테롤, LDL-콜레스테롤, AI는 WHR, BMI,% BF, 활동량과는 유의적으로 높은 정의상관 관계를 보였다(p<0.05, p<0.01). HDL-콜레스테롤은 BMI, WHR과는 유의한 부의 상관관계를 보였다. 수축기 혈압은 BMI, WHR과는 높은 정의 상관관계를 보였다(p<0.01). 나이는 채식인에서 중성지방과는 정의 상관관계(p<0.05), 비채식인에서는 중성지방 혈청 총 콜레스테롤, LDL-콜레스테롤, AI, 수축기 혈압과는 정의 상관관계를 보였다. 두군 모두 연령 증가와 함께 중성지방, 혈청 총 콜레스테롤, LDL-콜레스테롤, AI, 수축기혈압은 유의적으로 높아졌고 채식인은 비채식인에 비해 유의적으로 낮았다(p<0.01). 이완기 혈압, 혈당은 뚜렷한 경향을 보이지 않았으나 연령증가에 따라 증가하였다. 중성지방, 혈청 총 콜레스테롤, LDL-콜레스테롤, AI, 수축기 혈압은 두군 모두 60대에 최고치를 나타내었고 70대에는 낮아지는 경향을 보였다. 따라서 혈청지질농도, 혈압은 연령 증가에 따라 유의하게 높아지고 채식인은 그 상승률이 비채식인에 비해 완만하게 증가하는 것으로 조사되었다. 이상의 결과에서 채식인은 심혈관 질환 관련인자인 혈청 총콜레스테롤, LDL-콜레스테롤, AI, 수축기혈압이 유의적으로 낮았다. 또한 나이가 듦에 따라 두군 모두 혈중지질 농도와 혈압이 높아지지만 채식군은 비채식군에 비해 상승률이 낮았다. 이로 미루어볼 때 채식은 가령과 함께 증가하는 심혈관 질환 관련인자의 상승률을 낮출 수 있을 뿐만 아니라 심혈관 질환의 예방과 치료에 효과가 있다고 볼 수 있다.

• Journal of Periodontal and Implant Science
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• 제51권5호
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• pp.342-351
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• 2021

Purpose: The aim of this study was to compare the inflammatory and lipid profile of patients with and without peri-implantitis. Methods: A cross-sectional biochemical study was carried out in which blood samples were collected from 16 patients with peri-implantitis and from 31 subjects with healthy implants. Clinical peri-implant parameters were obtained from all subjects. Levels of tumor necrosis factor-alpha and interleukin-10 (IL-10) were measured in serum. Lipid fractions, glucose and creatinine levels, and complete blood count were also assessed. Results: After controlling for a history of periodontitis, statistically significant differences between peri-implantitis patients and controls were found for total cholesterol (estimated adjusted mean difference, 76.4 mg/dL; 95% confidence interval [CI], 39.6, 113.2 mg/dL; P<0.001), low-density lipoprotein (LDL) cholesterol (estimated adjusted mean difference, 57.7 mg/dL; 95% CI, 23.8, 91.6 mg/dL; P<0.001), white blood cells (WBC) (estimated adjusted mean difference, 2.8×10³/µL; 95% CI, 1.6, 4.0×10³/µL; P<0.001) and IL-10 (estimated adjusted mean difference, -10.4 pg/mL; 95% CI, -15.8, -5.0 pg/mL; P<0.001). The peri-implant probing pocket depth (PPD) was modestly positively correlated with total cholesterol (r=0.512; P<0.001), LDL cholesterol (r=0.463; P=0.001), and WBC (r=0.519; P<0.001). A moderate negative correlation was observed between IL-10 and PPD (r=0.609; P<0.001). Conclusions: Otherwise healthy individuals with peri-implantitis showed increased low-grade systemic inflammation and dyslipidemia.

• 대한약침학회지
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• 제16권3호
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• pp.23-29
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• 2013

Objectives: Dyslipidemia in diabetes mellitus is a significant risk factor for the development of cardiovascular complications. The aim of this study was to evaluate the effect of the ethyl-acetate fraction of an ethanolic extract from Streospermum suaveolens on lipid metabolism in streptozotocin (STZ)-induced diabetic rats. Methods: Diabetes was induced by intraperitonial injection of STZ (50 mg/kg). Diabetic rats were treated with an ethyl-acetate fraction orally at doses of 200 and 400 mg/kg daily for 14 days. On the $15^{th}$ day, serum lipid profiles, such as total cholesterol (TC), triglycerides (TG), low-density lipoprotein (LDL), and high-density lipoprotein (HDL), were estimated in experimental rats. The atherogenic (AI) and the coronary risk (CRI) indices were also evaluated. Results: The ethyl-acetate fraction at doses of 200 and 400 mg/kg significantly (P < 0.001) and dose-dependently reduced serum cholesterol, triglycerides and LDL, but increased HDL towards near normal levels as compared to diabetic control rats. The fraction also significantly (P < 0.001) lowered the atherogenic index (AI) and coronary risk index (CAI) in a dose-dependent manner. Conclusion: The present study demonstrated that the ethyl-acetate fraction of Stereospermum suaveolens exhibits a potent antihyperlipidemic activity in hyperglycemic rats and suggests that the plant may have therapeutic value in treating the diabetic complication of hyperlipidemia.

• 대한지역사회영양학회지
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• 제13권1호
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• pp.100-110
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• 2008

Recently, a lot of epidemiological studies revealed that low HDL-cholesterol level was a better predictor of risk for coronary heart disease than total cholesterol. This study investigated the anthropometric parameters, clinical blood indices, and dietary factors influencing serum HDL-cholesterol level by using a cross-sectional study for Korean female college students. The subjects were 94 female college students. They were divided into three groups according to their serum HDL-cholesterol levels, low HDL-cholesterol (<50 mg/dL, n=20), medium HDL-cholesterol (50 $\leq$, < 60 mg/dL, n=39) high serum HDL-cholesterol groups (60 $\leq$ mg/dL, n = 35). This study examined their demographic data and dietary intake throughout a questionnaire. Clinical blood indices were measured using an automatic blood chemistry analyzer (Selectra E), after 12 hours of fasting. BMI, body weight, fat mass, and waist circumferences were significantly increased according to low serum HDL-cholesterol levels. Serum lipid analysis showed a significantly higher level of TG, LDL-/HDL-Ratio, atherogenic index in the low HDL-cholesterol group. Serum levels of GPT, uric acid and alkaline phosphatase in the low HDL-cholesterol group were significantly higher than in the other group. The average consumption of energy was 1627 kcal and 77.76% of estimated energy requirement (EER). The mean ratio of calories from carbohydrate: protein: fat was 57:15:28. The low HDL-cholesterol group was significantly higher than the other groups in eggs, fat and oils consumption. Interestingly, milk and diary products consumption of low HDL-cholesterol group was half (p < 0.05) of those of the other groups. In conclusion, serum HDL-cholesterol levels appeared to be decreased by increasing BMI, fat mass, waist circumference, and serum TG level. In addition, some dietary factors seemed to be related to serum HDL-cholesterol levels. However, further research is needed to elucidate the exact relationship between serum HDL-cholesterol level and dietary factors.