Relationship between serum copper and protein thiols in hyperlipidemic patients

Objective:To measure serum copper and protein thiols along with lipid profile in hyperlipidemic patients and to establish the relationship between serum copper,protein thiols and lipid profile parameters.Methods: The study group consisted of 26 newly diagnosed hyperlipidemic patients not associated with any other systemic diseases and 26 age and sex matched healthy controls.Fasting lipid profile was done by enzymatic method using automated analyzer.Serum copper and protein thiols were measured spectrophotometrically.Results: Serum copper and protein-SH levels were significantly decreased in cases(P<0.01,P<0.01) compared to controls.Serum copper correlated positively with protein thiols(r=0.800,P<0.01) and negatively with LDL cholesterol(r=-0.351 P<0.05).Conclusion: Serum copper and protein thiols were decreased in hyperlipidemia and they correlated positively indicating protective role of copper in preventing homocysteinylation of protein and hence in preventing atherosclerosis.     

丙型肝炎病毒感染者血脂分析及临床意义

目的探讨血脂分析对丙型肝炎病毒（HCV）感染者的临床意义。方法收集HCV感染者107例,分成HCV携带者、轻度和中度慢性丙型肝炎患者三组,分析血脂水平。结果 HCV感染者血清总胆固醇（TC）、高密度脂蛋白胆固醇（HDL-C）和低密度脂蛋白胆固醇（LDL-C）均较正常对照组低（P〈0.05）,且随肝功能损害加重,降低程度增大。HCV携带者血清甘油三酯（TG）与对照组比较差异无统计学意义（P〉0.05）,但中度和轻度慢性丙型肝炎患者TG含量高于对照组（P〈0.01）。HCV携带者和轻度慢性丙型肝炎患者血清载脂蛋白AI（ApoAI）含量与对照组差异无统计学意义（P〉0.05）,但中度慢性丙型肝炎患者ApoAI含量较对照组低（P〈0.01）。HCV感染者血清载脂蛋白B100和脂蛋白（a）含量与对照组比较差异无统计学意义（P〉0.05）。结论 HCV感染者血清TC降低可能是肝脏储备功能下降所致,TG升高可能与HCV核心蛋白抑制微粒体TG转运蛋白相关。     

血浆氧化低密度脂蛋白、高敏C反应蛋白与脑梗死的相关性研究

目的:研究血浆氧化低密度脂蛋白(OxLDL)、高敏C反应蛋白(hsCRP)与动脉粥样硬化血栓形成性脑梗死之间的关系。方法:选取75例经头颅MRI确诊的动脉粥样硬化性脑梗死住院患者,腔隙性脑梗死、心源性栓塞性脑梗死及病因不明性卒中均不在收集范围;同时选取同期体检年龄、性别一致的健康人群32例作为对照组。采用ELISA试剂盒检测血浆OxLDL水平,高敏C反应蛋白采用免疫比浊法检测,其他脑梗死危险因素如年龄、性别、血脂等数据也一并收集。由同一名神经科专业医师参照美国国立卫生院卒中量表对病例组进行神经功能缺损评定即NIHSS评分。结果:病例组血脂、血浆OxLDL水平以及血清hsCRP含量均显著高于对照组(P<0.05),且血浆OxLDL水平、血清hsCRP水平与NIHSS(national institutes of healthy stroke scale)评分呈正相关(r=0.685,r=0.673;P<0.05),而血脂水平与NIHSS评分则无相关关系。结论:血浆OxLDL水平、血清hsCRP与动脉粥样硬化血栓形成性脑梗死严重程度有一定关系。     

对氧磷酸酯酶-1活性在2型糖尿病及血管病变中的改变

目的：探讨PON-1活性在2型糖尿病（DM）中的改变及其在DM血管病变发生中的作用。方法：检测100例2型DM患者及40例正常对照的对氧磷酸酯酶-1（PON1）活性、总抗氧化能力（T-AOS）、氧化低密度脂蛋白（OX-LDL）、丙二醛（MDA）浓度变化，并按不同分组进行比较。血清PON-1活性用苯乙酸酯为底物，分光光度法测定，OX-LDL用ELISA法测定，MDA用硫带巴比妥酸法测定，T-AOS检测用分光光度法。结果：2型DM组PON-1活性比正常对照组显著降低（P〈0．001），且与HDL减少无关，OX-LDL、MDA显著高于正常对照组（P〈0．001，P〈0．001），T-AOS显著低于正常对照（P〈0．001）。合并血管病变的各组2型DM患者PON-1活性、T-AOS均低于无血管病变组，OX-LDL、MDA均高于无血管病变组。相关分析显示PON-1活性与T-AOS正相关（r=0．778，P〈0．01），与OX-LDL（r=-0．643，P〈0．01）呈负相关。PON-1活性影响因素经多元线性逐步回归分析，发现只有T-AOS、CHO、LDL、OX-LDL的回归系数P值〈0．05。结论：2型DM患者PON-1活性下降，脂蛋白氧化易感性增加，血管易于损伤。PON-1活性降低是2型糖尿病大、微血管病变的危险因素。     

海洛因依赖行为与血脂水平的研究

目的　探讨海洛因依赖者血脂水平及临床意义。方法　采用酶法和免疫比浊法检测 37例海洛因依赖者和 2 0名健康对照者的血清胆固醇 (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)、脂蛋白(a) (Lp(a) )、载脂蛋白AI(apoAI)和载脂蛋白B(apoB)水平 ,并比较戒断综合征患者 (2 6例 )、非戒断综合征患者 (11例 )、吸食年限超过 5年患者 (2 1例 )和吸食年限少于 5年患者 (16例 )与正常对照组的血脂水平。结果　海洛因依赖组血清TC(4.5±0 .7)mmol/L、HDL C(1.0 8± 0 .36 )mmol/L均低于对照组 (4.9± 0 .8)mmol/L、(1.2 0± 0 .32 )mmol/L ,差异有显著性 (P <0 .0 5 ) ,LP(a) (40 2± 76 )mg/L高于对照组 (2 86± 38)mg/L ,差异有显著性 (P <0 .0 5 )。戒断综合征组血清LP(a) (5 2 0± 86 )mg/L显著高于对照组 (2 86± 38)mg/L ,差异非常显著 (P <0 .0 1)。吸食年限超过 5年组血清TC(3.8± 0 .6 )mmol/L、HDL C(0 .92± 0 .2 8)mmol/L显著低于对照组 (4.9± 0 .8)mmol/L、(1.2 0± 0 .32 )mmol/L ,差异非常显著 (P <0 .0 1)。结论　海洛因依赖者血清TC、HDL C和LP(a)水平存在异常变化 ,低血清TC、HDL C水平可能与依赖者强迫性觅药行为和抑郁情绪有关 ,高血清LP(a)水平可能     

Paraoxonase 1 and platelet-activating factor acetylhydrolase activities in patients with low hdl-cholesterol levels with or without primary hypertriglyceridemia

BACKGROUND: Previous studies have shown that high density lipoprotein (HDL)-deficient states are associated with reduced paraoxonase 1 (PON1) activity. However, HDL reduction caused by primary hypertriglyceridemia has not been fully explored. The aim of the present study was to evaluate whether PON1 and platelet-activating factor acetylhydrolase (PAF-AH), two antioxidant enzymes, were altered in patients with low HDL-cholesterol levels with or without primary hypertriglyceridemia in comparison with control normolipemic subjects. METHODS: We studied 24 patients with low HDL-cholesterol levels with (n=12) or without (n=12) primary hypertriglyceridemia in comparison with 12 control subjects who presented normal HDL-cholesterol and triglyceride levels. Paraoxon and phenylacetate were used as substrate for measuring PON1 activities and 1-hexadecyl-2-[3H]acetyl-glycero-3-phosphocholine for platelet-activating factor acetylhydrolase (PAF-AH) activity. Double substrate method was used to assign phenotypes. Lipid, lipoprotein, apolipoprotein, and lipoprotein particles were determined by standardized methods. RESULTS: Both PON1 activities were significantly reduced in patients with low HDL-cholesterol levels. This reduction could be selectively attributed to the hypertriglyceridemic subgroup. PAF-AH activity was not different between hypoalphalipoproteinemic patients and controls. PON1 activities correlated positively and significantly with HDL-cholesterol, HDL2-cholesterol, HDL3-cholesterol, HDL-phospholipids, apo A-I, apo A-II, and LpA-I:A-II. PAF-AH correlated positively and significantly with total and low density lipoprotein-cholesterol. CONCLUSIONS: Data from this study would suggest that in hypoalphalipoproteinemic syndrome, particularly when associated with hypertriglyceridemia, there is impairment in enzymatic antioxidant activity exclusively related with HDL.     

血清对氧磷酯酶1活性与2型糖尿病合并高血压的关系

目的探讨对氧磷酯酶1（PON1）与2型糖尿病（DM）合并高血压的关系。方法将2型DM患者173例分为无高血压组（2型DM组）55例,轻度高血压组44例,中度高血压40例,重度高血压34例,并设健康对照组（NC组）49例。测量各组体重参数、血压,检测临床生化指标及血清PON1活性。结果 2型DM组血清PON1活性低于NC组（P〈0.01）,2型DM合并高血压各组血清PON1活性低于2型DM组（P〈0.05或P〈0.01）,在2型DM合并高血压各组中随血压升高血清PON1活性降低。血清PON1活性与体重指数（BMI）、空腹血糖（FBG）、收缩压（SBP）、舒张压（DBP）、三酰甘油（TG）、总胆固醇（TC）、低密度脂蛋白胆固醇（LDL-C）水平呈显著负相关,与高密度脂蛋白胆固醇（HDL-C）呈显著正相关。结论 2型糖尿病合并高血压患者血清PON1降低,且血压越高,PON1活性降低越显著。     

高血压病患者C反应蛋白变化的临床意义

目的:观察高血压病患者血清C反应蛋白(CRP)的变化,分析其与相关临床指标的关系,探讨炎症在高血压病中的作用.方法:测定143例高血压病患者和60例健康体检者的血清CRP、空腹血糖(FBG)、总胆固醇(TC)、三酰甘油(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)、白细胞(WBC)计数、体质量指数(BMI),所有研究对象均清晨空腹采血,CRP的测定采用免疫散射比浊法 .结果:高血压病组CRP水平显著高于正常对照组(P<0.01);随着血压水平的升高,CRP也逐渐升高,高血压1级与3级间有显著性差异(P<0.05);高血压各亚组WBC计数均较对照组高;CRP与TG呈显著正相关,与HDL-C呈显著负相关(P<0.05).结论:高血压病患者体内存在炎症反应; CRP水平可相应反映了高血压病患者血压水平,CRP对于病情的估计具有一定的意义;高TG、低HDL-C血症可能参与了体内炎症反应,积极控制血脂可能减轻炎症反应,从而有助于改善血压情况.     

载脂蛋白E基因多态性与高脂血症的关系

目的 研究载脂蛋白Ｅ（ａｐｏＥ）基因多态性对血脂水平的影响及其与高脂血症的关系。方法 应用聚合酶链反应结合限制性片段长度多态性（ＰＣＲ－ＲＦＬＰ）检测法,测定８７例正常对照者和１６３例高脂血症患者的ａｐｏＥ基因型;血脂水平按常规方法测定。结果 共检测出４种ａｐｏＥ基因型,分别显Ｅ３／３、Ｅ４／３及Ｅ４／２。高脂血症组ａｐｏＥ４／３基因型和ε４等位基因频率均高于对照组（Ｐ〈０．０５）;不同的ａｐｏＥ等位基因间ＴＣ和ＬＤＬ－Ｃ水平存在差别,依次是ε４〉ε３〉ε２。结论 ａｐｏＥ基因多态性影响血脂的代谢水平;ε４等位基因是高脂血症的遗传易患因素之一。     

郑州地区汉族健康人群和糖尿病合并冠心病患者血清芳香酯酶活性频数分布态性与192位基因的多态性

目的:研究郑州地区汉族健康人群和糖尿病合并冠心病 (DM CAD)患者血清芳香酯酶 (ArE/PON1 )活性频数分布态性与 192位基因多态性的分布。方法:郑州地区汉族健康人群 321例,DM CAD90例。用终点法测定血清ArE/PON1活性。PCR检测年龄相近的 182例健康人和 90例DM CAD患者ArE/PON1 192位基因多态性。结果:郑州市汉族健康人群与DM CAD患者血清ArE/PON1活性频数均呈单峰正态分布;ArE/PON1 192存在基因多态性,等位基因为Q和R。DM CAD患者ArE/PON1酶活性 (0. 198±0. 015)u/ml,低于正常对照组的 (0. 258±0. 020)u/ml(t=37. 92,P<0. 01);DM CAD患者R基因频率和RR基因型分布频率分别为 62%和 31%,高于正常对照组的 46%和 12% (P< 0. 01)。2个观察组各基因型间血清ArE/PON1酶活性差异无统计学意义。结论:郑州地区汉族人群血清ArE/PON1活性频数分布为单峰正态分布,并存在有ArE/PON1 192位基因多态性,R基因可能是该地区DM CAD的独立危险因素。     

血脂代谢紊乱与外周血白细胞C5a受体表达的关系

探讨血脂代谢紊乱与外周血白细胞C5a受体表达的关系.方法 高脂血症患者60人,同期正常对照30人,测定血清总胆固醇、甘油三酯、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、脂蛋白(a)、氧化低密度脂蛋(oxLDL)等脂代谢指标以及补体C3、C4,使用流式细胞仪检测外周血白细胞C5a受体,分析脂代谢异常以及补体C3、C45平与C5a受体表达的关系.结果 高脂血症组总胆固醇、甘油三脂、LDL-C、oxLDL、脂蛋白(a)、补体C3、C4等较对照组明显升高;高脂血症组CD88阳性淋巴细胞、单核细胞、粒细胞平均荧光强度有升高趋势(3.05±0.91比2.96±0.76、4.90±1.33比4.58±1.13、13.87±4.77比13.60±3.54),但差异无统计学意义(P>0.05);直线相关分析,CD88阳性单核细胞及粒细胞平均荧光强度与脂蛋白(a)正相关,CD88阳性单核细胞及粒细胞平均荧光强度与oxLDL亦呈正相关,与总胆固醇、甘油三脂、LDL-C、HDL-C、补体C3和C4不相关;偏相关分析及多元回归显示oxLDL是CD88阳性单核细胞及粒细胞平均荧光强度的独立预测因素.结论 oxLDL可能影响外周血白细胞C5a受体的表达.     

Serum lipid profile in malnourished Nigerian children in Zaria

BACKGROUND/OBJECTIVE: There is paucity of data on the pattern of serum lipids in malnourished children in Zaria. Most of the reported studies were carried out in southern part of Nigeria. The overall objective of this study was therefore to measure serum lipids in children with PEM in Zaria with the view to recommending its use in them. SUBJECTS, MATERIALS AND METHODS: Serum lipids were measured in 115 children presenting with PEM and 115 age- and sex-matched well nourished controls aged 6-36 months .The malnourished children consisted of 25, 30, 30 and 30 children with kwashiorkor, marasmic-kwashiorkor, marasmus and underweight respectively. There were 60 males and 55 females. Serum total cholesterol(TC),high density lipoprotein cholesterol (HDL-C) and triglyceride(TG) were measured by enzymatic colorimetric methods of serum low density lipoprotein cholesterol(LDL-C) and very low density lipoprotein cholesterol(VLDL-C) were estimated using Friedewald formula. RESULTS: Serum TC, LDL-C and HDL-C levels were significantly lower (p<0.01, p<0.05 and p<0.001 respectively), while the ratio TC/HDL-C was significantly higher (p<0.001) in children with PEM than in their well-nourished counterparts. Concentrations of serum TG and VLDL-C were apparently but not significantly lower in children with PEM than in well-fed children (p>0.05).Serum levels of TC, LDL-C and HDL-C were significantly higher (p<0.001, p<0.001 and p<0.01 respectively) in oedematous PEM patients than in their non-oedematous counterparts. Serum TG and VLDL-C values were apparently but not significantly higher in oedematous PEM patients than in non-oedematous ones. CONCLUSION: There was a significant reduction in serum lipid concentrations in children with PEM. The study therefore suggests that measurement of serum lipids could be of importance in the assessment of childhood malnutrition.     

高脂血症患者C—反应蛋白含量的变化及氟伐他汀对它的影响

OBJECTIVE: To observe the changes of C-reactive protein (CRP) level and its relationship with blood lipids, and the effects of fluvastatin on CRP and the lipids in patients with hyperlipidemia. METHODS: Serum levels of cholesterol (TC), triglycerides (TG), high density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C), very-low-density lipoprotein cholesterol (VLDL-C) and lipoprotein(a)[Lp(a)] were measured by enzyme assay, and plasma CRP level by immunonephelometry before and after fluvastatin treatment (20 mg/d for 4 weeks) in patients with hyperlipidemia. RESULTS: CRP levels were above normal in 90.3% hyperlipidemia cases in spite of the various accompanying diseases. Fluvastatin treatment significantly reduced TC (-7.49%), TG (-14.32%), LDL (-13.88%), VLDL (-18.48%) and TC/HDL(-13.50%) levels (P<0.01), and also brought down Lp(a) concentration (-13.81%). CRP levels was very effectively reduced after the treatment (-15.92%, P<0.001). No association between basal CRP levels and basal lipids and Lp(a) concentrations was observed. Positive correlation of CRP, however, was observed after fluvastatin treatment with TC/HDL (r=0.62, P=0.041) and Lp(a) (r=0.320, P=0.011), while inverse relations were noted between CRP and HDL (r=-0.288, P=0.023). CONCLUSION: CRP levels increases markedly in patients with hyperlipidemia, a fact that is independent of the accompanying diseases. In addition to modulating blood lipid levels, fluvastatin also reduces CRP level, the latter possibly serving as an independent predictive factor for atherosclerotic cardiovascular diseases and also as an indicator for estimating the effectiveness of the treatment.     

急性脑梗死患者血清MMP-9及TIMP-1的表达及意义

目的观察急性脑梗死患者血清基质金属蛋白酶-9（matrix metaflOproteinase-9,MMP-9）及其抑制因子基质金属蛋白酶抑制因子-1（tissue inhibitor of matrixmetalloproteinase-1,TIMP-1）的含量变化,探讨其在脑梗死发生发展过程中的作用和意义。方法用ELISA法检测70例急性脑血栓形成,54例腔隙性脑梗死患者以及104例健康体检者血清MMP-9和TIMP-1的含量。同时采用免疫比浊法测高敏C-反应蛋白（high sensitive C—reactive protein,hs—CRP）水平,并进行外周血白细胞计数。结果急性脑血栓形成组的血清MMP-9、TIMP-1的水平显著高于腔隙性脑梗死组和健康对照组（P〈0.01）。脑血栓形成组血清MMP-9、TIMP-1水平与白细胞计数、hs—CRP呈正相关（P〈0.01）;与空腹血糖、总胆固醇、甘油三酯、低密度脂蛋白胆固醇无明显相关性（P〉0.05）。结论脑梗死急性期检测外周血MMP-9、白细胞计数、hs—CRP水平对于判断脑梗死的病灶大小、严重程度及近期预后有着一定的临床意义。     

三七总皂苷治疗高脂血症疗效研究

目的:三七总皂苷治疗高脂血症疗效观察。方法:40例高脂血症伴高黏血症患者,给予血塞通软胶囊2粒,每日2次口服,疗程6个月。治疗前后分别测血脂、血黏度。结果:经过治疗后,两组患者总胆固醇(TC)、甘油三酯(TG)、低密度脂蛋白胆固醇(LDL-C)和高密度脂蛋白胆固醇(HDL-C)水平无显著性差异(P>0.05);经过治疗后,两组患者血浆比黏度(RPV)、血球压积(HCT)、血小板黏附率(PAD)亦无显著性差异(P>0.05)。治疗组总有效率为90.77%,对照组总有效率为91.94%,两组无显著性差异,治疗组未见不良反应。结论:三七总皂苷治疗高脂血症及高黏血症疗效显著。     

辛伐他汀治疗原发性肾病综合征高脂血症30例临床观察

目的：观察辛伐他汀治疗原发性肾病综合征高脂血症的临床效果。方法：将原发性肾病综合征患者60例随机分为观察组与对照组,每组30例,对照组给予标准激素治疗,观察组在标准激素治疗的基础上加用辛伐他汀,治疗3周后分别检测两组患者的总胆固醇（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）水平及24h尿蛋白定量（24hUPQ）情况。结果：两组治疗后24hUPQ均明显低于治疗前（P〈0．01）,观察组治疗后TC、LDL—C水平明显低于治疗前和对照组（P〈0．01）。结论：辛伐他汀治疗原发性肾病综合征高脂血症有较好的临床疗效。     

微粒化非诺贝特对高脂血症患者血脂及纤维蛋白原的影响

目的 :观察微粒化非诺贝特调脂作用及对血浆纤维蛋白原的影响。方法 :76例原发性高脂血症患者给予微粒化非诺贝特 2 0 0mg ,1次 /d ,疗程 8周。结果 :治疗 8周后血清甘油三酯、胆固醇、低密度脂蛋白、血浆纤维蛋白原显著低于治疗前水平 (P <0 .0 1或P <0 .0 5 ) ,高密度脂蛋白显著升高 (P <0 .0 5 )。结论 :微粒化非诺贝特能有效降低高血脂 ,对降低纤维蛋白原也有一定作用。     

茶多酚对家兔血脂影响的观察研究

目的探讨茶多酚对于高脂血症模型组家兔血脂的影响。方法采用随机数字表法将来自广东省食品药品职业技术学校实验动物中心80只家兔分为四组,即空白对照组、高血脂模型组、0.4%茶多酚治疗治疗组及0.8%茶多酚治疗组,每组各20只,分别给予基础饲料、高脂饲料、高脂饲料＋0.4%茶多酚及高脂饲料＋0.8%茶多酚,比较四组家兔体重、血清三酰甘油、总胆固醇、低密度脂蛋白胆固醇及高密度脂蛋白胆固醇等。结果空白对照组、高血脂模型组、0.4%茶多酚组及0.8%茶多酚组家兔实验前体重、血清三酰甘油、总胆固醇、低密度脂蛋白胆固醇及高密度脂蛋白胆固醇水平组间比较差异无统计学意义（P〈0.05）;与实验前比较,实验后高血脂模型组、0.4%茶多酚组及0.8%茶多酚组家兔体重、血清三酰甘油、总胆固醇、低密度脂蛋白胆固醇及高密度脂蛋白胆固醇水平均明显增高（均P〈0.05）,同时0.4%茶多酚组及0.8%茶多酚组体重、血清三酰甘油、总胆固醇、低密度脂蛋白胆固醇及高密度脂蛋白胆固醇水平均明显优于高血脂模型组,组间比较差异有统计学意义（P〈0.05）。结论茶多酚能够有效降低高脂血症模型组家兔血脂水平,具有一定血脂代谢调节作用。     

496例糖耐量减退患者血糖与血脂水平的变化

目的:了解糖耐量减退(IGT)患者血糖与血脂水平的变化.方法:按照1997年美国糖尿病学会(ADA)建议的新标准筛选IGT患者496例(即IGT组),糖耐量正常人群1514例(即对照组),并对两者的空腹血浆葡萄糖(FBG)、血清总胆固醇(TC)、血清甘油三脂(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)及TC/HDL-C进行测定和比较分析.结果:IGT患者组的FBG、TG、TC/HDL-C显著高于对照组(P＜0.01),TC、LDL-C也明显高于对照组(P＜0.05),而HDL-C明显低于对照组(P＜0.01).结论:测定和分析结果表明IGT患者的血糖水平和血脂水平较对照组有明显变化.     

老年糖尿病患者血清胰岛素样生长因子—1的测定及其与脂质代 …

目的：为了探讨老年糖尿病患者血清胰岛素样生长因子－１（ＩＧＦ－１）水平与脂质代谢紊乱的关系。方法：检测６０例老年糖尿病患者血清ＩＧＦ－１、血糖、胰岛素、生长激素、总胆固醇、某油三酯、高密度脂蛋白胆固醇及低密度脂蛋白胆固醇水平,并与３０名正常健康成年人、５０名正常健康老年人作比较。同时还分析了血清ＩＧＦ－１水平与蓁各项指标的相关性。结果：⑴正常老年人血清ＩＧＦ－１水平明显低于正常成年人（Ｐ〈０．０１