The role of low-density lipoprotein （LDL） and high-density lipoprotein （HDL） in comparison with whole egg yolk for sperm cryopreservation in rhesus monkeys

Low-density lipoprotein （LDL） extracted from hen egg yolk has recently been considered to be superior to whole egg yolk in sperm cryopreservation of various animal species. Meanwhile, there was a notion that high-density lipoprotein （HDL） in egg yolk may have a negative effect on post-thaw survival. The role of LDL and HDL in sperm cryopreservation of rhesus monkeys has not been explored. The present study evaluates their effect in comparison with egg yolk with or without the addition of permeable cryoprotectant （glycerol） on sperm cryopreservation of rhesus macaques. In addition, various additives intended to change the lipid composition of LDL-sperm membrane complex have also been tested for their effectiveness in preserving post-thaw viability. Our findings indicated that LDL is the main component in egg yolk that is responsible for its protective role for sperm cryopreservation in rhesus monkeys. Regardless of the presence or absence of glycerol, the protective role of LDL is similar to that of egg yolk and we did not observe any superiority in post-thaw survival with LDL when compared to egg yolk. Modifying the lipid composition of LDL-sperm membrane complex with the addition of cholesterol, cholesterol loaded cyclodextrin and phosphatidylcholine also did not yield any improvements in pest-thaw survival; while addition of methyl-β-cyclodextrin reduced post-thaw motility. HDL plays a neutral role in sperm cryopreservation of rhesus monkeys. The present study suggests that egg yolk may still hold advantages when compared with LDL as effective components in extenders for sperm cryopreservation in rhesus monkeys.

Oxidized low density lipoprotein (Ox-LDL) impacts on erythrocyte viscoelasticity and its molecular mechanism

Aim:The oxidized low-density lipoprotein(OxLDL) plays an important role in atherosclerosis yet it remains unclear if it damages circulating erythrocytes. Method: In this study。

Association between LDL, Apolipoprotein-B Apolipoprotein A-I and Lipoprotein(a) and Severity of Coronary Artery Disease Based on Coronary Angiography

Atherosclerosis is the most important contributor to increasing burden of coronary artery disease (CAD). Growing evidence suggests that the ratios of Apo B/Apo A-I and Lp(a) are better indexes for risk assessment of CAD. Elevated plasma levels of lipoprotein(a) in humans represent a major in-herited risk factor for atherosclerosis. Thus, a study was performed to determine the association betwwen serum Apo B, Apo A-I, and lipoprotein(a) levels, and severity of CAD in patients with CAD confirmed on coronary angiography findings. An analytical case control study was carried out with 85 patients (58 males and 27 females) 40 - 60 years of age confirmed as having CAD on coronary angiography and 85 age and sex matched healthy volunteers as controls. Serum samples were an-alyzed for Apo A-1 LDL, Apo B, Apo A-I, and lipoprotein(a) concentration and the severity of CAD was assessed using coronary angiography scoring method. Patients with CAD had significantly high serum LDL-C, Apo B and Lp(a) levels compared to control subjects. However, serum Apo A-I level did not show a significant difference between two groups. Subjects with a positive family history of CAD with increased serum Lp(a) ≥ 17.3 mg/dL have high risk for development of CAD. Present study suggests that serum Lp(a) cut-off value of 17.3 mg/dL may be an important predictor in ruling out major vessel disease and luminal narrowing by atheroma.

EFFECT OF HERB-MEDICINE-CAKE-SEPARATED MOXIBUSTION ON SERUM LIPOPROTEIN CONTENTS AND RATIO OF HDL-Ch AND LDL-Ch IN HYPERLIPEMIA RABBITS

Objective: To observe the effect of herb-medicine-cake-separated moxibustion on serum lipoprotein in hyperlipemia rabbits. Methods: 55 New-Zealand rabbits were randomly divided into control group (n=13), model group (n=14), direct moxibustion group (n=14) and herb-medicine-cake-separated moxibustion (indirect moxibustion) group (n=14). Hyperlipemia model was established by feeding the animals with specialized forage (15% vitellus powder, 5% lard, 0.5% cholesterol and common forage) for 6 weeks. Moxibustion was applied to “Juque”(CV 14), “Tianshu”(ST 25), “Fenglong”(ST 40), etc., 4 moxa-cones for every acupoint, once daily and continuously for 40 days. Serum high density lipoprotein-cholesterol (HDL-Ch), low density lipoprotein-cholesterol (LDL-Ch) and total cholesterol (TCh) contents were assayed with colorimetric method. Results: Compared with control group, serum LDL-Ch content, HDL-Ch/LDL-Ch and HDL-Ch/TCh of model group were significantly higher (P<0.05～0.01), while compared with model group, LDL-Ch contents of two moxibustion groups were strikingly lower (P<0.01). No significant differences were found between two moxibustion groups in all the 4 indexes. Conclusion: Both direct and indirect moxibustion can effectively lower serum LDL-Ch, raise HDL-Ch, HDL-Ch/LDL-Ch and HDL-Ch/TCh, and regulate lipoprotein metabolism in hyperlipemia rabbits.

银杏素调节TGF⁃β1/Smad通路对ox⁃LDL诱导血管内皮细胞损伤的影响

目的探讨银杏素调节转化生长因子⁃β1(TGF⁃β1)/Smad信号通路对ox⁃LDL诱导血管内皮细胞损伤的影响。方法将人脐静脉血管内皮细胞HUVEC分为对照组(未处理的HUVEC细胞)、模型组(50μg/mL ox⁃LDL处理的HUVEC细胞)、银杏素组(50μg/mL ox⁃LDL+12.5μmol/L银杏素处理HUVEC细胞)、SRI⁃011381组(50μg/mL ox⁃LDL+10μmol/L的TGF⁃β1/Smad激活剂SRI⁃011381处理HUVEC细胞)、银杏素+SRI⁃011381组(50μg/mL ox⁃LDL+12.5μmol/L银杏素+10μmol/L的SRI⁃011381共同处理HUVEC细胞)。ELISA试剂盒检测HUVEC细胞丙二醛(MDA)、谷胱甘肽(GSH)、超氧化物歧化酶(SOD)、IL⁃6、IL⁃1β、TNF⁃α水平;CCK⁃8法检测HUVEC细胞增殖;流式细胞术检测HUVEC细胞凋亡率;Western blot检测细胞上皮间质转化(EMT)、TGF⁃β1/Smad通路相关蛋白表达。结果与对照组相比,模型组IL⁃1β、IL⁃6、TNF⁃α、MDA水平、细胞凋亡率、TGF⁃β1、Smad3、神经型钙黏附蛋白(N⁃cadherin)、波形蛋白(Vimentin)蛋白水平显著增加(P<0.05),A值、GSH、SOD水平、上皮钙黏附素(E⁃cadherin)蛋白水平显著降低(P<0.05);与模型组相比,银杏素组IL⁃1β、IL⁃6、TNF⁃α、MDA水平、细胞凋亡率、TGF⁃β1、Smad3、N⁃cadherin、Vimentin蛋白水平显著下降(P<0.05),A值、GSH、SOD水平、E⁃cadherin蛋白水平显著升高(P<0.05),而SRI⁃011381组趋势相反,SRI⁃011381减弱了银杏素对ox⁃LDL诱导的HUVEC细胞损伤的抑制作用。结论银杏素可能通过下调TGF⁃β1/Smad信号通路对ox⁃LDL诱导的血管内皮细胞损伤起到改善作用。

阿利西尤单抗降低血脂不达标冠心病患者LDL-C的有效性及对动脉粥样硬化斑块的影响

目的:探讨阿利西尤单抗降低血脂不达标冠心病(CHD)患者低密度脂蛋白胆固醇(LDL-C)的临床效果及对动脉粥样硬化斑块的影响。方法:选择2017年9月至2021年3月期间深圳市龙华区人民医院收治的血脂不达标的CHD患者127例,根据是否接受阿利西尤单抗治疗分为联合组(46例)和对照组(81例)。对照组维持原他汀类药物治疗方案不变,联合组在原他汀类药物治疗方案基础上应用PCSK9抑制剂阿利西尤单抗注射液,75mg皮下注射,每2周一次。两组均进行3个月的治疗,并随访12个月。比较两组治疗前、随访12个月后总胆固醇(TC)和LDL-C水平,斑块纤维帽厚度、脂质斑块弧度、脂质斑块长度、最小管腔横截面积,以及不良反应和临床终点事件情况。结果:随访12个月后,与对照组比较,联合组血浆TC[(3.48±1.04)mmol/L比(2.29±0.76)mmol/L]、LDL-C[(2.08±0.53)mmol/L比(1.27±0.41)mmol/L]水平均显著降低,脂质斑块弧度[(107.22±13.29)°比(92.65±11.81)°]、脂质斑块长度[(5.45±0.89)mm比(4.84±0.82)mm]显著减小,斑块纤维帽厚度[(123.60±14.87)μm比(131.46±14.29)μm]和最小管腔横截面积[(2.51±0.37)mm 2比(2.69±0.33)mm 2]显著增加(P均<0.01)。两组不良反应发生率(χ^(2)=0.428,P=0.513)和临床终点事件发生率(χ^(2)=0.253,P=0.615)均无显著差异。结论:阿利西尤单抗可显著降低血脂不达标的CHD患者LDL-C水平,增加斑块纤维帽的厚度和管腔横截面积,降低斑块内部脂质负荷,提高斑块的稳定性,且安全性良好。

HbA1c、LDL-C、HDL-C联合检测在2型糖尿病肾病中的诊断价值

目的:探究糖化血红蛋白(HbA1c)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)联合检测在2型糖尿病肾病中的诊断价值。方法:选取2019年1月—2021年12月南京中医药大学附属苏州市中医医院收治的120例2型糖尿病患者作为研究对象。根据患者是否发生糖尿病肾病将其分为合并肾病组(n=35)和未合并肾病组(n=85)。收集两组患者一般资料。检测两组Hb A1c、LDL-C、HDL-C。比较两组一般资料及Hb A1c、LDL-C、HDL-C水平。分析2型糖尿病肾病的危险因素。分析HbA1c、LDL-C、HDL-C对2型糖尿病肾病的诊断价值。结果:合并肾病组糖尿病病程长于未合并肾病组,吸烟史占比高于未合并肾病组,差异有统计学意义(P<0.05)。合并肾病组HbA1c、LDL-C水平均高于未合并肾病组,HDL-C水平低于未合并肾病组,差异有统计学意义(P<0.05)。logistic分析结果显示,HbA1c、LDL-C、吸烟史、糖尿病病程均是2型糖尿病患者合并糖尿病肾病的危险因素,HDL-C是保护因素(P<0.05)。HbA1c、LDL-C、HDL-C联合检测的AUC最高。结论:HbA1c、LDL-C、HDL-C联合检测应用于2型糖尿病肾病诊断中,具有较高的诊断价值,为临床对2型糖尿病肾病的早期诊断提供新思路。

Synthetic high-density lipoprotein(sHDL):a bioinspired nanotherapeutics for managing periapical bone inflammation

Apical periodontitis(AP)is a dental-driven condition caused by pathogens and their toxins infecting the inner portion of the tooth(i.e.,dental pulp tissue),resulting in inflammation and apical bone resorption affecting 50%of the worldwide population,with more than 15 million root canals performed annually in the United States.Current treatment involves cleaning and decontaminating the infected tissue with chemo-mechanical approaches and materials introduced years ago,such as calcium hydroxide,zinc oxide–eugenol,or even formalin products.Here,we present,for the first time,a nanotherapeutics based on using synthetic highdensity lipoprotein(sHDL)as an innovative and safe strategy to manage dental bone inflammation.sHDL application in concentrations ranging from 25μg to 100μg/mL decreases nuclear factor Kappa B(NF-κB)activation promoted by an inflammatory stimulus(lipopolysaccharide,LPS).Moreover,sHDL at 500μg/mL concentration markedly decreases in vitro osteoclastogenesis(P<0.001),and inhibits IL-1α(P=0.027),TNF-α(P=0.004),and IL-6(P<0.001)production in an inflammatory state.Notably,sHDL strongly dampens the Toll-Like Receptor signaling pathway facing LPS stimulation,mainly by downregulating at least 3-fold the pro-inflammatory genes,such as Il1b,Il1a,Il6,Ptgs2,and Tnf.In vivo,the lipoprotein nanoparticle applied after NaOCl reduced bone resorption volume to(1.3±0.05)mm^(3) and attenuated the inflammatory reaction after treatment to(1090±184)cells compared to non-treated animals that had(2.9±0.6)mm^(3)(P=0.0123)and(2443±931)cells(P=0.004),thus highlighting its promising clinical potential as an alternative therapeutic for managing dental bone inflammation.

基于ox-LDL/LOX-1信号通路探讨脂质代谢紊乱促进肺癌进展中的机制

目的基于氧化低密度脂蛋白(ox-LDL)/人凝集素样氧化低密度脂蛋白受体1(LOX-1)信号通路探讨脂质代谢紊乱促进肺癌进展的机制。方法收集81个已鉴定的具有成对相邻非癌组织(离肿瘤至少5 cm)的肺腺癌组织,使用免疫组织化学检测LOX-1表达。肺腺癌细胞系(A549、H1299细胞)中过表达LOX-1。用Transwell测定细胞侵袭能力。用不同浓度oxLDL处理细胞,并检测细胞中LOX-1表达情况。结果在包含原发性人肺癌和匹配的邻近非癌组织中,肿瘤中LOX-1染色比非癌组织样品明显增强(中值H分数99.4 vs.16.2,P<0.001)。高LOX-1表达与低生存显著相关(P<0.001)。与无淋巴结转移的患者相比,发生淋巴结转移患者的癌组织具有更高的LOX-1水平(中值H分数83.2 vs.121.1,P<0.01)。LOX-1过表达显著促进肺癌细胞的侵袭转移细胞数(P<0.01)。此外,LOX-1是ox-LDL诱导的肺癌细胞转移所必需的功能靶点。伊他替尼抑制LOX-1过表达的A549在体外的转移能力。结论LOX-1的表达随着oxLDL水平的升高而增加,并且LOX-1的表达上调促进了肺癌细胞的转移,其作用机制可能与激活Janus激酶/转录因子激活子(JAK1/STAT6)信号通路有关。

Monocyte to High-density Lipoprotein Cholesterol Ratio as a Predictor of Nonalcoholic Fatty Liver Disease in Childhood Obesity

Objective Inflammation is involved in the development and progression of nonalcoholic fatty liver disease(NAFLD).The monocyte to high-density lipoprotein cholesterol ratio(MHR)has emerged as a marker for various inflammation-related diseases.The aim of the present study was to investigate the association between the MHR and NAFLD in a population with childhood obesity.Methods Based on hepatic ultrasound,a total of 504 children with obesity(357 with NAFLD and 147 without NAFLD)were included in the study.The correlation between the MHR and NAFLD risk factors was assessed by Pearson’s and Spearman’s analyses.Multivariate stepwise logistic regression analyses were conducted to explore the association between the MHR and the risk of NAFLD.Results The MHR in patients with NAFLD was significantly greater than that in patients without NAFLD[0.52(0.44-0.67)versus 0.44(0.34-0.57),P<0.001].Multivariate stepwise logistic regression analysis demonstrated that the MHR[odds ratio(OR):1.033,95%confidence interval(CI):1.015-1.051;P<0.001]was an independent predictor of NAFLD in childhood obesity patients,as were age(OR:1.205,95%CI:1.059-1.371;P=0.005],waist circumference[OR:1.037,95%CI:1.008-1.067;P=0.012],and alanine transaminase[OR:1.067,95%CI:1.045-1.089;P<0.001].Additionally,MHR quartiles showed a significant positive association with the incidence of NAFLD after adjusting for potential confounding factors.Conclusion The present study showed that the MHR may serve as an available and useful indicator of NAFLD in individuals with childhood obesity.

Low-density lipoprotein receptor-related protein 2(LRP2)is required for lipid export in the midgut of the migratory locust,Locusta migratoria

Low-density lipoprotein receptor-related protein 2(LRP2)is a multifunctional endocytic receptor expressed in epithelial cells.In mammals,it acts as an endocytic receptor that mediates the cellular uptake of cholesterol-containing apolipoproteins to maintain lipid homeostasis.However,little is known about the role of LRP2 in lipid homeostasis in insects.In the present study,we investigated the function of LRP2 in the migratory locust Locusta migratoria(LmLRP2).The mRNA of LmLRP2 is widely distributed in various tissues,including integument,wing pads,foregut,midgut,hindgut,Malpighian tubules and fat body,and the amounts of LmLRP2 transcripts decreased gradually in the early stages and then increased in the late stages before ecdysis during the nymphal developmental stage.Fluorescence immunohistochemistry revealed that the LmLRP2 protein is mainly located in cellular membranes of the midgut and hindgut.Using RNAi to silence LmLRP2 caused molting defects in nymphs(more than 60%),and the neutral lipid was found to accumulate in the midgut and surface of the integument,but not in the fat body,of dsLmLRP2-treated nymphs.The results of a lipidomics analysis showed that the main components of lipids(diglyceride and triglyceride)were significantly increased in the midgut,but decreased in the fat body and hemolymph.Furthermore,the content of total triglyceride was significantly increased in the midgut,but markedly decreased in the fat body and hemolymph in dsLmLRP2-injected nymphs.Our results indicate that LmLRP2 is located in the cellular membranes of midgut cells,and is required for lipid export from the midgut to the hemolymphand fat body in locusts.

Initial decrease in the lipoprotein(a)level is a novel prognostic biomarker in patients with acute coronary syndrome

BACKGROUND Lipoprotein(a)[Lp(a)]is a causal risk factor for atherosclerotic cardiovascular diseases;however,its role in acute coronary syndrome(ACS)remains unclear.AIM To investigate the hypothesis that the Lp(a)levels are altered by various conditions during the acute phase of ACS,resulting in subsequent cardiovascular events.METHODS From September 2009 to May 2016,377 patients with ACS who underwent emergent coronary angiography,and 249 who completed≥1000 d of follow-up were enrolled.Lp(a)levels were measured using an isoform-independent assay at each time point from before percutaneous coronary intervention(PCI)to 48 h after PCI.The primary endpoint was the occurrence of major adverse cardiac events(MACE;cardiac death,other vascular death,ACS,and non-cardiac vascular events).RESULTS The mean circulating Lp(a)level decreased significantly from pre-PCI(0 h)to 12 h after(19.0 mg/dL to 17.8 mg/dL,P<0.001),and then increased significantly up to 48 h after(19.3 mg/dL,P<0.001).The changes from 0 to 12 h[Lp(a)Δ0-12]significantly correlated with the basal levels of creatinine[Spearman’s rank correlation coefficient(SRCC):-0.181,P<0.01]and Lp(a)(SRCC:-0.306,P<0.05).Among the tertiles classified according to Lp(a)Δ0-12,MACE was significantly more frequent in the lowest Lp(a)Δ0-12 group than in the remaining two tertile groups(66.2%vs 53.6%,P=0.034).A multivariate analysis revealed that Lp(a)Δ0-12[hazard ratio(HR):0.96,95%confidence interval(95%CI):0.92-0.99]and basal creatinine(HR:1.13,95%CI:1.05-1.22)were independent determinants of subsequent MACE.CONCLUSION Circulating Lp(a)levels in patients with ACS decreased significantly after emergent PCI,and a greater decrease was independently associated with a worse prognosis.

Overexpression of low-density lipoprotein receptor prevents neurotoxic polarization of astrocytes via inhibiting NLRP3 inflammasome activation in experimental ischemic stroke

Neurotoxic astrocytes are a promising therapeutic target for the attenuation of cerebral ischemia/reperfusion injury.Low-density lipoprotein receptor,a classic cholesterol regulatory receptor,has been found to inhibit NLR family pyrin domain containing protein 3(NLRP3)inflammasome activation in neurons following ischemic stroke and to suppress the activation of microglia and astrocytes in individuals with Alzheimer’s disease.However,little is known about the effects of low-density lipoprotein receptor on astrocytic activation in ischemic stroke.To address this issue in the present study,we examined the mechanisms by which low-density lipoprotein receptor regulates astrocytic polarization in ischemic stroke models.First,we examined low-density lipoprotein receptor expression in astrocytes via immunofluorescence staining and western blotting analysis.We observed significant downregulation of low-density lipoprotein receptor following middle cerebral artery occlusion reperfusion and oxygen-glucose deprivation/reoxygenation.Second,we induced the astrocyte-specific overexpression of low-density lipoprotein receptor using astrocyte-specific adeno-associated virus.Low-density lipoprotein receptor overexpression in astrocytes improved neurological outcomes in middle cerebral artery occlusion mice and reversed neurotoxic astrocytes to create a neuroprotective phenotype.Finally,we found that the overexpression of low-density lipoprotein receptor inhibited NLRP3 inflammasome activation in oxygen-glucose deprivation/reoxygenation injured astrocytes and that the addition of nigericin,an NLRP3 agonist,restored the neurotoxic astrocyte phenotype.These findings suggest that low-density lipoprotein receptor could inhibit the NLRP3-meidiated neurotoxic polarization of astrocytes and that increasing low-density lipoprotein receptor in astrocytes might represent a novel strategy for treating cerebral ischemic stroke.

急性脑梗死患者不同性质颈动脉粥样斑块及预后的sdLDL-C、Lp-PLA2水平观察

目的 观察急性脑梗死(ACI)患者的小而密低密度脂蛋白胆固醇(sdLDL-C)、脂蛋白相关磷脂酶A2(Lp-PLA2)水平,探讨其与颈动脉粥样斑块稳定性的关系,以期为早期识别和改善患者预后提供思路。方法 依据颈部血管超声检查粥样斑块性质结果,164例急性脑梗死患者(观察组)中无粥样斑块者49例、稳定粥样斑块者58例、不稳定粥样斑块者57例,以47例健康体检者为对照,比较2组的同型半胱氨酸(Hcy)、sdLDL-C、Lp-PLA2表达水平。统计患者入院时的美国国立卫生院卒中量表(NIHSS)得分,随访患者发病30 d的预后情况,并分析影响ACI预后的相关因素。结果 脑梗死患者的空腹血糖、甘油三酯、sdLDL-C/LDL-C、sdLDL-C/TC、Lp-PLA2水平均高于对照组,HDL-C水平低于对照组;有粥样斑块者的Hcy、sdLDL-C水平高于无粥样斑块者及对照组;不稳定粥样斑块者的TC、LDL-C水平高于无粥样斑块者及对照组,差异均有统计学意义(P<0.05)。预后不良组的不稳定粥样斑块发现率(45.78%)高于预后良好组(23.46%),入院时NIHSS评分及血糖、sdLDL-C、sdLDL-C/LDL-C、sdLDL-C/TC、Lp-PLA2水平均高于预后良好组,差异均有统计学意义(P<0.05)。结论 sdLDL-C、Lp-PLA2水平与急性脑梗死患者颈动脉粥样斑块的稳定性密切相关,对预后判断有积极意义。

Association between sensitivity to thyroid hormones and non-highdensity lipoprotein cholesterol levels in patients with type 2 diabetes mellitus

BACKGROUND Dyslipidemia and type 2 diabetes mellitus(T2DM)are chronic conditions with substantial public health implications.Effective management of lipid metabolism in patients with T2DM is critical.However,there has been insufficient attention given to the relationship between thyroid hormone sensitivity and dyslipidemia in the T2DM population,particularly concerning non-high-density lipoprotein cholesterol(non-HDL-C).AIM To clarify the association between thyroid hormone sensitivity and dyslipidemia in patients with T2DM.METHODS In this cross-sectional study,thyroid hormone sensitivity indices,the thyroid feedback quantile-based index(TFQI),the thyroid-stimulating hormone index(TSHI),the thyrotrophic T4 resistance index(TT4RI),and the free triiodothyronine(FT3)/free thyroxine(FT4)ratio were calculated.Logistic regression analysis was performed to determine the associations between those composite indices and non-HDL-C levels.Random forest variable importance and Shapley Additive Explanations(SHAP)summary plots were used to identify the strength and direction of the association between hyper-non-HDL-C and its major predictor.RESULTS Among the 994 participants,389(39.13%)had high non-HDL-C levels.Logistic regression analysis revealed that the risk of hyper-non-HDL-C was positively correlated with the TFQI(OR:1.584;95%CI:1.088-2.304;P=0.016),TSHI(OR:1.238;95%CI:1.034-1.482;P=0.02),and TT4RI(OR:1.075;95%CI:1.006-1.149;P=0.032)but was not significantly correlated with the FT3/FT4 ratio.The relationships between composite indices of the thyroid system and non-HDL-C levels differed according to sex.An increased risk of hyper-non-HDL-C was associated with elevated TSHI levels in men(OR:1.331;95%CI:1.003-1.766;P=0.048)but elevated TFQI levels in women(OR:2.337;95%CI:1.4-3.901;P=0.001).Among the analyzed variables,the average SHAP values were highest for TSHI,followed by TT4RI.CONCLUSION Impaired sensitivity to thyroid hormones was associated with high non-HDL-C levels in patients with T2DM.

LDL-C/HDL-C比值与急性心肌梗死患者主要不良心血管事件的相关性研究

目的:探讨急性ST段抬高型心肌梗死(STEMI)患者低密度脂蛋白胆固醇(LDL-C)/高密度脂蛋白胆固醇(HDL-C)比值(LHR)与其院内主要不良心血管事件(MACE)的相关性及其在临床中的应用价值。方法:收集发病12h内就诊的481例STEMI住院患者的临床资料及MACE发生情况,根据LHR的中位数(2.9)将患者分为低LHR组(LHR≤2.9,n=223)和高LHR组(LHR>2.9,n=258)。分析LHR与STEMI患者院内MACE的相关性。结果:高LHR组患者院内MACE比例均高于低LHR组[恶性室性心律失常:29(11.2%) VS 9(4.0%),P=0.004;高度房室传导阻滞:22(8.5%) VS 6(2.7%),P=0.006;心源性休克+死亡:29(11.2%) VS 7(3.1%),P=0.001]。恶性室性心律失常、心源性休克+死亡患者LHR差异有统计学意义(P均<0.05)。Pearson相关分析显示,除高度房室传导阻滞(r=0.060,P>0.05)外,LHR与恶性室性心律失常(r=0.121)、心源性休克和死亡(r=0.115)均显著相关(P<0.05)。多因素Logistic回归分析显示,LHR、空腹血糖是STEMI患者发生院内MACE的独立危险因素(P均<0.05)。ROC曲线显示LHR预测STEMI患者院内MACE的曲线下面积为0.606(95%CI:0.544~0.668),cut-off值为2.854,敏感度为80.6%,特异度为52.1%;LHR>2.854时STEMI住院患者很可能会发生MACE。结论:STEMI患者LHR升高与恶性室性心律失常、心源性休克及死亡发生呈正相关。LHR是STEMI患者发生MACE的独立危险因素,对恶性室性心律失常、心源性休克及死亡发生有一定的预测价值。

Correlation of Helicobacter pylori infection with high-density lipoprotein cholesterol levels and pulse wave conduction velocity

Background:Helicobacter pylori(HP)is associated with several gastrointestinal diseases,including peptic ulcer diseases and gastric cancer,and non-gastrointestinal diseases such as hypertension and Alzheimer's disease.However,the relationship between HP and lipid metabolism and atherosclerosis remains unclear.This study aims to investigate the association between H.pylori infection and high-density lipoprotein cholesterol levels and pulse wave conduction velocity.Methods:This is a report of a cross-sectional study that collected data from 2,827 participants.The data collected included results of life questionnaires,laboratory tests,13C-urea breath test(13C-UBT),and pulse wave conduction velocity test.Based on the results of the 13C-UBT test,the subjects were divided into two groups:the HP-uninfected group(HP−)and the HP-infected group(HP+).The study compared the differences in HDL-C levels and brachial-ankle pulse wave velocity(baPWV)between the two groups.One-way regression analysis was used to identify potential factors affecting HDL-C levels in the study population.Multiple regression equations were presented to analyze whether HP infection was an independent risk factor for abnormal HDL-C metabolism in the population.Results:Univariate analysis demonstrated that high-density lipoprotein cholesterol(HDL-C)levels were significantly lower in the HP+group compared to the HP−group,with a mean difference ofβ=−18.1 mg/dl(95%CI:−19.3 to−17.0,P<0.001).After adjusting for all variables,the HDL-C levels remained lower in the HP+group compared to the HP-group,with a mean difference ofβ=−17.4 mg/dl(95%CI:−18.2 to−16.7,P<0.001).These findings suggest that H.pylori infection is independently associated with abnormal HDL-C metabolism.Additionally,brachial-ankle pulse wave velocity(baPWV)was higher in the HP+group than in the HP−group on both sides.On the right side,the baPWV was 1,713.4±231.4 cm/s in the HP+group compared to 1,542.8±237.5 cm/s in the HP−group(t=−18.30,P<0.001).On the left side,the baPWV was 1,743.7±238.8 cm/s in the HP+group compared to 1,562.8±256.3 cm/s in the HP−group(t=−18.23,P<0.001).These results indicate a significant association between H.pylori infection and increased arterial stiffness,as measured by baPWV.Conclusion:Helicobacter pylori infection is associated with a decrease in high-density lipoprotein cholesterol levels and an increase in pulse wave conduction velocity.

苍柴调中方辅助改善肝郁脾虚型肥胖2型糖尿病的疗效及对胰岛素抵抗、FFA、LDL-C水平的影响

目的:探讨苍柴调中方辅助改善肝郁脾虚型肥胖2型糖尿病(T2DM)的疗效,并分析其对胰岛素抵抗、游离脂肪酸(FFA)、低密度脂蛋白胆固醇(LDL-C)水平的影响。方法:选取2020年4月至2023年4月该院收治的肝郁脾虚型肥胖T2DM患者100例,根据随机数字表法分为两组,各50例。对照组患者使用二甲双胍治疗,观察组患者在对照组基础上联合苍柴调中方辅助治疗。观察两组患者的治疗效果,比较两组患者治疗前后中医症状积分、糖代谢指标[空腹血糖(FBG)、空腹胰岛素(FINS)、胰岛素抵抗指数(HOMA-IR)]、血清FFA、LDL-C、肿瘤坏死因子α(TNF-α)水平的差异,并对不良反应发生率进行统计。结果:观察组患者的治疗总有效率高于对照组,不良反应发生率低于对照组,差异均有统计学意义(P<0.05)。治疗后,观察组患者倦怠乏力、精神抑郁、脘腹闷胀及大便黏滞等中医症状积分均低于对照组,差异均有统计学意义(P<0.05)。与治疗前比较,两组患者治疗后的FBG、HOMA-IR、FINS水平均明显降低,其中观察组患者治疗后的FINS、FBG及HOMA-IR水平低于对照组,差异均有统计学意义(P<0.05)。观察组患者治疗后的血清LDL-C、FFA、TNF-α水平均低于对照组,差异均有统计学意义(P<0.05)。结论:苍柴调中方辅助治疗可明显提高肝郁脾虚型肥胖T2DM患者的治疗效果,改善胰岛素抵抗,下调血清FFA、LDL-C水平。

倍他乐克在老年冠心病心绞痛患者中的应用效果及LDL水平影响评价

倍他乐克在老年冠心病心绞痛患者中的应用效果及LDL水平影响评价。方法 我们选择了180名老年冠心病心绞痛患者作为研究对象,他们被分为了两个小组,每个小组都有90个人。对照组采用传统的治疗方案,观察组采用倍他乐克。对总有效率和低密度脂蛋白浓度的影响进行了比较。结果 治疗后,观察组总体疗效好于对照组,低密度脂蛋白等各项指标的缓解情况好于对照组,而观察组在心脏功能方面则明显好于对照组。结论 倍他乐克能显著提高老年冠心病心绞痛病人的总体疗效,降低 LDL含量,具有较好的临床应用价值。

DWI-ASPECTS评分联合血清Hcy、LDL-C、Lp-PLA2对急性脑梗死静脉溶栓患者预后不良的预测价值

目的分析弥散加权成像-阿尔伯塔卒中项目早期计算机断层扫描(DWI-ASPECTS)评分联合血清同型半胱氨酸(Hcy)、低密度脂蛋白胆固醇(LDL-C)、脂蛋白磷脂酶A2(Lp-PLA2)对急性脑梗死(ACI)静脉溶栓患者预后不良的预测价值。方法回顾性分析2021年3月至2023年9月山东大学齐鲁医院德州医院收治的102例ACI患者的临床资料,静脉溶栓3个月后以改良Rankin量表(mRS)评估患者预后,根据mRS评分将患者分为预后良好组(mRS评分≤2分)与预后不良组(mRS评分>2分)。比较两组基线资料及血清Hcy、LDL-C、Lp-PLA2水平及DWI-ASPECTS评分。绘制受试者工作特征(ROC)曲线分析DWI-ASPECTS评分联合血清Hcy、LDL-C、Lp-PLA2对ACI静脉溶栓患者预后不良的预测价值。结果预后不良组有35例患者,预后良好组有67例患者。预后不良组美国国立卫生研究院卒中量表(NIHSS)评分及Hcy、LDL-C、Lp-PLA2水平高于预后良好组,DWI-ASPECTS评分低于预后良好组,差异均有统计学意义(P<0.05)。ROC曲线分析结果显示,DWI-ASPECTS评分联合Hcy、LDL-C、Lp-PLA2评估ACI静脉溶栓患者预后不良的曲线下面积(AUC)大于DWI-ASPECTS评分、Hcy、LDL-C、Lp-PLA2单独预测的AUC(Z=3.548、3.316、3.996、4.009,P<0.05)。结论DWI-ASPECTS评分及血清Hcy、LDL-C、Lp-PLA2均对ACI静脉溶栓患者预后不良具有一定的预测价值,且其联合检测可提高预测价值。