血清低密度脂蛋白胆固醇直接测定法与3种公式计算法的比较

目的分析比较血清低密度脂蛋白胆固醇(LDL-C)直接测定法与3种公式计算法(Friedewald公式计算法、改良Friedewald公式计算法及新公式计算法)的差异,评价这3种计算法在临床上的适用范围。方法用直接法测定1 028例样本的LDL-C值与F公式和改良F公式及新公式计算所得的值,按照甘油三酯(TG)的不同浓度范围分成5组进行分析比较。结果在TG≤4.52 mmol/L时,3种计算方法均与直接法有良好的相关性,改良F公式法所得的值最接近直接法。在2.26 mmol/LTG≤4.52 mmol/L时,F公式法与直接法的差值比较差异有统计学意义(P0.01)。在TG4.52 mmol/L时,F公式法与改良F公式法及直接法的差值比较差异均有统计学意义(P0.01)。结论在TG≤4.52 mmol/L时,改良F公式法优于其他2种公式计算法,可以用于LDL-C值的估算;但在TG4.52 mmol/L时,3种公式法均不能准确估算LDL-C值。     

4548例黎湛线铁路职工血脂 血糖体检结果分析

目的:通过对4548例黎湛线铁路职工进行血脂血糖检测,了解分析其血脂、血糖异常情况。方法:酶法测定TG、TC;直接法测定HDL-C、LDL-C;氧化酶法测定GLU。结果:4548例体检者血清测定中,TG≥1.70 mmol/L者657例,占14.45%;TC≥6.21 mmol/L者538例,占11.83%;LDL-C≥3.64 mmol/L者612例,占13.46%;HDL-C≤0.91 mmol/L者634例,占13.94%,TG≥1.70 mmol/L及TC≥6.21 mmol/L者275例,占6.05%;GLU≥6.1 mmol/L者187例,占4.11%。结论:部分体检者已存在潜在危险因素,很容易导致心脑血管疾病的发生。     

血清低密度脂蛋白胆固醇的直接法测定与计算法估算的结果比较

目的　比较均相酶法直接测定血清低密度脂蛋白胆固醇 (LDL C)与Friedewald公式计算法得出的LDL C结果的一致性 ,以及甘油三酯 (TG)浓度水平对二者一致性的影响。方法　收集 887份标本 ,在日立 7170A全自动生化分析仪上直接测定LDL C、总胆固醇 (TC)、甘油三酯 (TG)和高密度脂蛋白胆固醇 (HDL C) ,同时又运用Friedewald公式计算出每份标本对应的LDL C值 ,对全体数据和根据TG的不同浓度水平分层后的数据分别进行统计处理。结果　对数据进行总体分析时 ,直接测定法与计算法LDL C差异无显著性 (P =0 .3 4) ;当TG≤ 4.5mmol/L ,直接测定法与计算法所得的LDL C值 ,两者差异无显著性 (P =0 .16) ,但对TG按浓度水平进一步分层 ,当TG≤ 2 .2 5mmol/L ,直接测定法与计算法所得的LDL C值 ,两者差异有显著性 (P <0 .0 0 1) ,计算法均值高于直接测定法均值 ;当 2 .2 6mmol/l≤TG≤ 4.5 2mmol/L ,直接测定法与计算法所得的LDL C值 ,两者差异有显著性 (P <0 .0 0 1) ,计算法均值低于直接测定法均值。结论　由于影响计算法LDL C准确度的因素较多 ,在保证LDL C直接测定法准确度和精密度的情况下 ,建议最好使用直接法测定LDL C。     

老年冠心病、脑梗死患者血清同型半胱氨酸与血糖、脂蛋白、血尿酸之间的关系

目的探讨老年冠心病、脑梗死患者血清同型半胱氨酸(Hcy)与空腹血糖(FBG)、甘油三酯(TG)、总胆固醇(TC)、高密度脂蛋白-胆固醇(HDL-C)、低密度脂蛋白-胆固醇(LDL-C)、脂蛋白[Lp(a)]、尿酸(UA)的关系。方法测定107例住院老年冠心病和脑梗死患者血清Hcy、FBG、TC、TG、HDL-C、LDL-C、LP(a)、UA等指标,并根据Hcy升高与否分为两组,比较两组FBG、TC、TG、HDL-C、LDL-C、LP(a)、UA的数值。结果Hcy升高组(A组)患者FBG、LP(a)、UA高于Hcy正常组(B组)。A组:FBG(5.51±1.30)mmol/L,TC(4.15±0.71)mmol/L,TG(1.39±1.06)mmol/L,HDL-C(1.08±0.32)mmol/L,LDL-C(2.47±0.73)mmol/L,Lp(a)(34.67±4.08)mg/dl,UA(374.11±9.87)μmol/L。B组:FBG(4.44±0.71)mmol/L,TC(4.03±1.89)mmol/L,TG(1.22±0.76)mmol/L,HDL-C(1.12±0.36)mmol/L,LDL-C(2.35±0.60)mmol/L,LP(a)(24.09±3.93)mg/dl,UA(326.79±11.96)μmol/L。两组间:FBG、LP(a)、UA差异有统计学意义(P<0.05);两组间:TC、TG、HDL-C、LDL-C差异无统计学意义(P>0.05)。结论FBG、LP(a)、UA与血清Hcy密切相关。     

秦皇岛市12～15岁青少年血脂正常参考值的研究

[目的]通过对秦皇岛市12～15岁青少年血脂调查,建立秦皇岛市12～15岁青少年血脂正常值参考值.[方法]于2006年8～10月间随机选取秦皇岛市初中生4750人,应用日立7170全自动生化分析仪检测TG、TC、HDL-C和LDL-C.分别取TC、LDL-C第75及第90百分位点作为临界脂蛋白水平及高脂蛋白的浓度标准.取TG第90百分位点作为高甘油三酯血症浓度.取HDL-C第5百分点作为低高密度脂蛋白浓度,建立秦皇岛地区12～15岁青少年血脂正常参考值.[结果]秦皇岛市12～15岁青少年血脂浓度分别为TC(3.76±0.627)mmoL/L,TG(0.92±0.477)mmol/L,HDL-C(1.44±0.302)mmol/L,LDL-C(1.87±0.538)mmol/L,男生组和女生组之间HDL-C水平差异无统计学意义(P>0.05),男生组和女生组之间TG,TC和LDL-C水平差异有统计学意义(P<0.05).[结论]建议12～15岁秦皇岛市青少年血脂浓度临界标准为TC≤4.01mmol/L(男)TC≤4.32mmol/L(女)LDL-C≤2.32mmol/L(男)LDL-C≤2.53mmol/L(女)高甘油三酯血症浓度应≤1.27mmol/L(男)高甘油三酯血症浓度应≤1.36mmol/L(女)低高密度脂蛋白浓度≥1.09mmol/L.     

血清尿酸和血脂检测在冠心病中的临床意义

目的 探讨血清尿酸(SUA )、血清总胆固醇(TC)、三酰甘油(TG),高密度脂蛋白胆固醇(HDL-C)及低密度脂蛋白胆固醇(LDL-C)检测结果与冠心病相关关系及其临床意义.方法 选取确诊冠心病病例153例为冠心病组,健康体检病例150例为健康对照组,测定两组SUA和血脂,并进行分析.结果 与健康对照组比较,冠心病组的SUA (498.4±73.4)μmol/L、血清TC (6.2±2.3 )mmol/L,TG (3.3±1.0 )mmol/L,LDL-C水平显著增高(4.2±1.6) mmol/L (P<0.05),HDL-C水平显著降低(1.1±0.5)mmol/L(P<0.05 ).结论 冠心病的发病与高SUA、高TC,高TG、高LDL-C及低HDL-C相关,联合检测SUA、血脂对冠心病病情监测具有一定价值.     

脑梗死患者血脂水平检测及临床意义

目的:探讨血脂水平与脑梗死的关系.方法:通过对137例急性脑梗死患者与对照组血脂变化观察,多因素分析用SPSS10.0软件包中的Logistic回归方程,计算相对危险度(RR)的95%可信限(CI).结果:脑梗死组TC、TC、LDL-C浓度均明显高于对照组,而HDL-C浓度明显低于对照组.结论:血清TC＞6.0 mmol/L才增加脑梗死的风险、而HDL-C浓度≥0.85 mmol/L可隐藏低脑梗死的风险.     

广州市区1541例2～6岁健康散居儿童及肥胖儿血脂水平分析

目的:了解广州市区2~6岁健康散居儿童血脂的正常参考值、临界值、危险值;调查2~6岁健康散居儿童高血脂发生率;探讨肥胖对儿童血脂的影响。方法:对1 541例广州市区2~6岁健康散居儿童空腹12 h以上抽取静脉血检测其血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)。结果:2~6岁健康散居儿童的TC、TG、LDL-C正常值(百分位法)分别为<4.56 mmol/L、<1.00 mmol/L、<2.74 mmol/L,危险值分别为>5.36 mmol/L、>1.43 mmol/L、>3.30 mmol/L;血脂异常的总检出率为7.75%;肥胖儿与正常组血脂4项指标相比较,TC、LDL-C有显著差异(P<0.05)。结论:冠心病、动脉粥样硬化的危险因素—血脂异常早在2~6岁健康儿童中已存在一定比例,应早期进行血脂筛查和饮食干预,小儿高脂血症应早期预防。     

武汉市某大学职工血糖血脂水平分析

目的 了解中国地质大学职工血糖血脂水平,做好糖尿病和心血管疾病的预防.方法 早晨空腹采血,对已服用降糖降脂降压的患者不要求停药,用日本SYSMEX公司生产的CHEMIX-180全自动生化分析仪进行血糖(GLU)、血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)检测.结果 空腹血糖高呈逐年递减趋势,随着年龄组的增加,水平及GLU＞6.10 mmol/L检出率逐步增加,男性高于女性;女性呈现高胆固醇和高LDL-C血症并随着年龄的增加水平增加,以女性50岁组为分界线,60岁女性TC≥6.22 mmol/L及LDL-C≥4.14 mmol/L检出率最高;男性高甘油三酯低HDL-C血症,水平均值和TG≥2.26 mmol/L及HLD-C＜1.04 mmol/L检出率均以40岁组男性升高明显.结论 开展定期体检和慢性非传染性疾病的流行病学调查,建立有效的健康教育体系,提高职工对血糖血脂异常的认知度,达到糖尿病和心血管疾病的预防效果.     

急性高血脂小鼠模型蛋黄乳及Trition法建立

目的比较蛋黄乳和Trition方法建立的小鼠急性高血脂模型。方法分别采用腹腔注射75%蛋黄乳剂和尾静脉注射3%Trition-WR1339(Trition)溶液的方法,建立小鼠急性高脂血症模型,观察辛伐他汀对小鼠血脂的影响。结果高脂模型A组(腹腔注射蛋黄乳)血清甘油三酯(TG)、总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)分别为14.02,7.33,2.98及1.03 mmol/L,与空白对照A组比较明显升高(P0.01);高脂模型B组(尾静脉注射Trition)血清TG、TC、LDL-C、HDL-C分别为16.87,8.71,3.83及1.27 mmol/L,与空白对照B组比较明显升高(P0.01);与高脂模型A、B组比较,辛伐他汀组血清TG、TC、LDL-C和HDL-C水明显降低。结论腹腔注射75%蛋黄乳剂和尾静脉注射3%Trition-WR1339溶液均可成功建立小鼠急性高血脂模型。     

Hyperhomocysteinemia, enzyme polymorphism and thiobarbituric Acid reactive system in children with high coronary risk family history

OBJECTIVES: To investigate both the frequency and the genetic background of hyperhomocysteinemia and the frequency of increased plasma thiobarbituric acid reactive system (TBARS) levels in children and adolescents whose parents had premature coronary heart disease (CHD). METHODS: The study was performed on children and adolescents aged 4-18 years (105 offspring of parents with CHD before age 45 and 74 referents from families without any evidence of premature atherosclerosis). Fasting serum total cholesterol (TC), high density lipoprotein cholesterol (HDL-C), and total triglyceride (TG) levels were measured by enzymatic methods. Low density lipoprotein cholesterol (LDL-C) level was calculated by the Friedewald formula. Plasma total homocysteine (THCy) level was measured by fluorescence polarisation immunoassay. Plasma TBARS level was determined by fluorimetric method. 5,10-methylenetetrahydrofolate reductase (MTHFR) enzyme polymorphism was analyzed by polymerase chain reaction with restriction fragment length polymorphism (PCR-RFLP). RESULTS: Hyperhomocysteinemia was found in 32 cases and in 4 controls. Increased plasma THCy level was found in 10 children and adolescents from 12 cases homozygous for the C677T polymorphism of the MTHFR gene. No similar high frequency was observed in heterozygous subjects. Elevated fasting plasma TBARS levels were found in 38 cases and in 8 controls. The frequency differences were significant (p < 0.01). Allele frequency of the MTHFR polymorphism among cases and controls was similar. Significant correlation (r = 0.53, p < 0.02) was detected between plasma THCy and TBARS levels. One child had high serum TC level, 5 had low serum HDL-C level and all other children had normal serum TC, LDL-C, HDL-C and TG levels from children with hyperhomocysteinemia and/or high plasma TBARS levels. A significant correlation (r = 0.64, p < 0.01) was observed between plasma THCy levels of parents and children in the case group. CONCLUSION: The measurement of plasma THCy and TBARS levels may contribute to the detection of the risk of children and adolescents with high CHD risk family history.     

北京社区体检人群餐后与空腹血脂水平的比较分析及意义

目的:探讨非空腹血脂异常判定标准在北京社区人群中应用的可行性。方法:采用自身对照研究。中国中医科学院广安门医院检验科于2018年1至10月招募社区体检者839名（男性292名,女性547名）,年龄中位数（四分位间距）为60（54, 66）岁,同时检测空腹和标准餐后4 h血脂谱水平,采用配对 t检验或者配对非...     

北京市城区学龄儿童载脂蛋白E多态性与血脂谱水平的关系

目的 了解载脂蛋白E（ApoE)基因多态性与儿童血脂谱水平的关系。方法 采用聚合酶链反应－限制性内切酶图谱分析法,对307名7－11岁在校儿童进行血脂谱水平测定及ApoE基因多态性检测.结果 307名儿童最常见基因型E3／3检出率为54．7％,其他基因型依次为E4／3（23．8％）、E4／4（9．1％）、E3／2（8．1％）、E4／2（3．9％）、E2／2（0．3％）,不同性别基因型构成的差异无显性;常见等位基因E3频率为70．7％,E4、E2分别为23．0％和6．4％,其中E4频率明显高于国内其他报道,E2频率接近于国内报道;男童E4／3、E3／3基因型总胆固醇（TC,4．19、4．29、3．41mmol/L)、低密度脂蛋白－胆固醇（LDL－C）、载脂蛋白AI（ApoA I)、载脂蛋白B（ApoB)水平高于E3／2基因型,E4／2基因型TC（4．28和3．42mmol/L)、ApoA I水平高于E3／2基因型,女童不同基因型血脂谱水平的差异无显性;高胆固醇组与正常组儿童ApoE-Hha I位点基因型分布比较差异无显性;ApoE2可使TC水平降低0．377mmol/L,LDL-C水平降低0．329mmol/L。结论 ApoE基因多态性与男童血清胆固醇水平相关,E2等位基因携带TC、LDL－C、ApoB水平最低。     

噪声暴露对某国有大型煤矿工人血糖和血脂水平的影响

目的 探讨某国有大型煤矿工作场所噪声对工人血糖和血脂水平的影响。方法 对新泰市某国有大型煤矿作业工人进行职业健康检查,随机选择长期接触高噪声(82.8~100.1 LAeq dB(A))428人为观察组,接触低噪声(53.9~71.0 LAeq dB(A))506人为对照组,比较两组工人血糖和血脂水平差异。结果 观察组工人血清葡萄糖为(5.32±0.79)mmol/L、总胆固醇为(4.72±0.82)mmol/L、甘油三酯为(1.67±1.31)mmol/L、高密度脂蛋白为(1.41±0.30)mmol/L、低密度脂蛋白为(2.79±0.68)mmol/L。观察组工人血清葡萄糖、总胆固醇、甘油三酯和低密度脂蛋白胆固醇水平均明显高于对照组,差异有统计学意义(P<0.05)。观察组的血清葡萄糖、总胆固醇、甘油三酯、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇异常率均高于对照组,差异有统计学意义(P<0.05);观察组的脂肪肝检出率高于对照组,差异有统计学意义(P<0.05)。随着工龄的增加,血糖、总胆固醇、甘油三酯和低密度脂蛋白胆固醇含量也增高,各工龄组之间血糖、总胆固醇、甘油三酯、高密度脂蛋白胆固醇和低密度脂蛋白胆固醇差异有统计学意义(P＜0.05)。结论 长期接触高噪声可能是煤矿作业工人血糖和血脂水平升高的危险因素。     

慢性三氯化镧暴露对大鼠血糖和血脂水平的影响

目的探讨稀土元素镧的慢性暴露对大鼠血糖、血脂的影响。方法分别以0.1、2和40 mg/kg剂量的三氯化镧(LaC l3)给大鼠经口灌胃,每天1次,90 d后处死;取全血测定糖化血红蛋白(HbA1 c),分离血清测定血糖(G lu)、总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)和低密度脂蛋白胆固醇(LDL-C)水平。结果与对照组相比,3个LaC l3暴露剂量组大鼠HbA1C、血清G lu、TG和LDL-C水平无统计学意义;0.1和2 mg/kg剂量LaC l3暴露组大鼠血清TC水平分别为(1.38±0.14)mmol/L和(1.37±0.26)mmol/L,与对照组大鼠(1.57±0.14)mmol/L相比有明显降低;0.1 mg/kg剂量LaC l3暴露组大鼠血清HDL-C为(0.79±0.12)mmol/L,比对照组大鼠(0.93±0.10)mmol/L有明显降低。结论0.1~40 mg/kg LaC l3慢性暴露对大鼠血清G lu、TG和LDL-C水平无显著影响;低、中剂量LaC l3慢性暴露可使大鼠血清TC和HDL-C降低。     

Coaching patients with coronary heart disease to achieve the target cholesterol: a method to bridge the gap between evidence-based medicine and the "real world"--randomized controlled trial

Community studies have demonstrated suboptimal achievement of lipid targets in the management of patients with coronary heart disease (CHD). An effective strategy is required for the application of evidence-based prevention therapy for CHD. The objective of this study was to test coaching as a technique to assist patients in achieving the target cholesterol level of <4.5 mmol/L. Patients with established CHD (n = 245) underwent a stratified randomization by cardiac procedure (coronary artery bypass graft surgery or percutaneous coronary intervention) to receive either the coaching intervention (n = 121) or usual medical care (n = 124). The primary outcome measure was fasting serum total cholesterol (TC), serum triglyceride (TG), high-density lipoprotein cholesterol (HDL-C), and calculated low-density lipoprotein cholesterol (LDL-C) level, measured at 6 months post-randomization. At 6 months, the serum TC and LDL-C levels were significantly lower in the coaching intervention group (n = 107) than the usual care group (n = 112): mean TC (95%CI) 5.00 (4.82-5.17) mmol/L versus 5.54 (5.36-5.72) mmol/L (P <.0001); mean LDL-C (95%CI) 3.11 (2.94-3.29) mmol/L versus 3.57 (3.39-3.75) mmol/L (P <.0004), respectively. Coaching had no impact on TG or on HDL-C levels. Multivariate analysis showed that being coached (P <.001) had an effect of equal magnitude to being prescribed lipid-lowering drug therapy (P <.001). The effectiveness of the coaching intervention is best explained by both adherence to drug therapy and to dietary advice given. Coaching may be an appropriate method to reduce the treatment gap in applying evidence-based medicine to the "real world."     

浙江省602例选择性冠状动脉造影患者血脂水平分析

目的研究经选择性冠状动脉造影证实的冠状动脉粥样硬化性心脏病(冠心病)与非冠心病患者血脂水平的差异。方法测定602例住院行选择性冠状动脉造影患者血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)和非高密度脂蛋白胆固醇(nonHDL-C)水平,并根据冠脉造影结果进行比较分析。结果冠心病组血清TC、LDL-C、nonHDL-C稍高于对照组(4．70 mmol／L±1．22 mmol／L vs．4．49 mmol／L±0．96 mmol／L、2．63 mmol／L±1．00 mmol／L vs．2．44 mmol／L±0．77 mmol／L、3.45 mmol／L±1．14 mmol／L vs．3．22 mmol／L±0.92 mmol／L),差异有统计学意义(P<0．05,P<0．01);组间不同水平血脂的构成比除HDL-C、nonHDL-C外差异无统计学意义(P>0．05)。结论高脂血症并非浙江省冠状动脉粥样硬化患者的固有特征,冠心病与非冠心病人群血脂水平存在较大的重叠。     

缺血性脑卒中患者幽门螺杆菌感染与同型半胱氨酸关系探讨

目的 探讨缺血性脑卒中患者幽门螺杆菌(Hp)感染与血脂、血清同型半胱氨酸(Hcy)水平变化的相关性.方法 选择2011年1-6月医院收治的缺血性脑卒中患者48例为研究对象,另选择40例健康体检者为对照组;采用酶联免疫吸附法(ELISA)和循环酶法检测HpIgG及Hcy表达水平,并检测血脂,分析Hp感染与血脂、血清Hcy表达之间的关系.结果 缺血性脑卒中组患者HpIgG阳性率为77.08％、血清总胆固醇(TC)为(5.36±0.68)mmol/L、甘油三酯(TG)为(1.95±0.49)mmol/L、低密度脂蛋白胆固醇(LDL-C)为(3.16±0.68)及Hcy(20.84±6.73)μmol/L的表达水平均明显高于对照组的HpIgG阳性率32.50％、TC为(4.12±0.45)mmol/L、TG为(1.15±0.39)mmol/L、LDL-C为(2.21±0.64)mmol/L、Hcy为(11.65±5.96) μmol/L;而缺血性脑卒中患者的高密度脂蛋白胆固醇(HDL-C)为(1.02±0.29)mmol/L表达水平明显低于对照组的(1.28±0.26) mmol/L;Hp感染阳性缺血性脑卒中患者的血清TC(5.79±0.94) mmol/L、TG(2.09±0.62) mmol/L、LDL-C( 3.46±0.72)mmol/L及Hcy(24.65±6.48)μmol/L表达水平均明显高于Hp感染阴性患者的(4.85±0.69)mmol/L、(1.53±0.34)mmol/L、(2.84±0.81 )mmol/L、(15.49±5.63) μmol/L;而HDL-C(0.88±0.19)mmol/L表达水平显著低于Hp感染阴性患者的(1.12±0.28)mmol/L,差异均有统计学意义(P＜0.05).结论 Hp感染与缺血性脑卒中发生有相关性,可能通过对血脂代谢及血清Hcy表达水平的影响,而促进缺血性脑卒中的发生发展.     

The influence of consuming an egg or an egg-yolk buttermilk drink for 12 wk on serum lipids,inflammation, and liver function markers in human volunteers

ObjectivesDietary cholesterol elevates serum total cholesterol (TC) and low-density lipoprotein cholesterol (LDL-C) concentrations modestly. There are indications that the cholesterol-raising effect depends on the food matrix, that is, sphingolipids and lactic acid bacteria are suggested to influence cholesterol metabolism. Traditional buttermilk is rich in both sphingolipids and lactic acid bacteria. Therefore, the aim of this study was to evaluate whether effects on cholesterol metabolism depend on food matrix (e.g., cholesterol provided as egg [yolk] or incorporated into traditionally prepared buttermilk drink).MethodsParticipants (N = 97) took part in a 12-wk intervention study. The controls (n = 20) continued their regular egg consumption of one to two eggs a week. The other two groups consumed either one extra egg per day (n = 57) or a buttermilk drink containing one egg yolk (n = 20). Blood was sampled at day 1 and at the end of the experimental period (day 90) to analyze serum lipids, lipoproteins, and markers reflecting cholesterol metabolism, low-grade systemic inflammation, endothelial activity, and liver function.ResultsSerum TC and LDL-C concentrations increased significantly by respectively 0.63 mmol/L (P < 0.05) and 0.59 mmol/L (P < 0.05) in women consuming one additional egg per day compared with controls. There were no effects on markers for inflammation, endothelial activity, or liver function. The increase in serum TC and LDL-C concentration was no longer significant in women consuming the same egg yolk incorporated in a buttermilk drink (0.33 mmol/L [P = 0.66] and 0.31 mmol/L [P = 0.55], respectively).ConclusionDaily egg consumption for 12 wk increases serum TC and LDL-C concentrations in women but not markers for inflammation, endothelial activity, and liver function. Interestingly, the rise in serum LDL-C concentrations is less pronounced when egg yolk is incorporated into a buttermilk drink, indeed suggesting that fractions in the buttermilk might influence dietary cholesterol absorption.     

Tomato-based food products are related to clinically modest improvements in selected coronary biomarkers in women

Few epidemiologic studies have examined the potential cardiovascular mechanisms of tomato-based food products, the primary dietary source of lycopene. We examined the cross-sectional association between tomato-based food product intake and coronary biomarkers in the Women's Health Study. Tomato-based food products (tomatoes, tomato juice, tomato sauce, pizza) were summed from a semiquantitative FFQ and multiple risk factors ascertained. Plasma from baseline blood samples were assayed for lipids, lipoproteins, hemoglobin A1c, C-reactive protein, fibrinogen, soluble intracellular adhesion molecule-1, and creatinine. A total of 27,261 women aged ≥45 y who were free of cardiovascular disease and cancer provided relevant data for this study. Tomato-based food product intake was modest, with 84% of women consuming <1 serving/d, but those with greater intake had healthier lifestyle and dietary habits. Women consuming ≥10 compared with <1.5 servings/wk of tomato-based food products had significant but clinically modest improvements in total cholesterol (TC) (5.38 vs. 5.51 mmol/L; P = 0.029), the TC:HDL cholesterol ratio (4.08 vs. 4.22; P = 0.046), and hemoglobin A1c (5.02 vs. 5.13%; P < 0.001) in multivariable models. Considering clinical cutpoints, women consuming ≥10 compared with <1.5 servings/wk were 31% (95% CI = 6%, 50%), 40% (95% CI = 13%, 59%), and 66% (95% CI = 20%, 86%) less likely to have elevated TC (≥6.21 mmol/L), LDL cholesterol (≥4.14 mmol/L), and hemoglobin A1c (≥6%), respectively. Other coronary biomarkers were unassociated with tomato-based food products. In conclusion, women consuming ≥10 compared with <1.5 servings/wk of tomato-based food products had clinically modest but significant improvements in TC, the TC:HDL cholesterol ratio, and hemoglobin A1c but not other coronary biomarkers.