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.

Association between Low-density Lipoprotein Receptor-related Protein 5 Polymorphisms and Type 2 Diabetes Mellitus in Han Chinese:a Case-control Study

Objective To investigate the association between low-density lipoprotein receptor-related protein 5 （LRPS） variants （rs12363572 and rs4930588） and type 2 diabetes mellitus （T2DM） in Han Chinese. Methods A total of 1842 T2DM cases （507 newly diagnosed cases and 1335 previously diagnosed cases） and 7777 controls were included in this case-control study. PCR-RFLP was conducted to detect the genotype of the two single nucleotide polymorphisms （SNPs）. Odds ratios （ORs） and 95% confidence intervals （95% CIs） were calculated to describe the strength of the association by logistic regression. Results In the study subjects, neither rs12363572 nor rs4930588 was significantly associated with T2DM, even after adjusting for relevant covariates. When stratified by body mass index （BMI）, the two SNPs were also not associated with T2DM. Among the 3 common haplotypes, only haplotype ~ was associated with reduced risk of T2DM （OR 0.820, 95% CI 0.732-0.919）. In addition, rs12363572 was associated with BMI （P〈0.001） and rs4930588 was associated with triglyceride levels （P=0.043） in 507 newly diagnosed T2DM cases but not in healthy controls. Conclusion No LRP5 variant was found to be associated with T2DM in Han Chinese, but haplotype TT was found to be associated with T2DM.

C1q/TNF-related protein 5 promotes atherogenesis by enhancing transcytosis and oxidative modification of low-density lipoprotein through increasing 12/15-lipoxygenase

Objective Increased transcytosis of low-density lipoprotein (LDL)across the endothelium and oxidation of LDL deposited within the subendothelial space are crucial early events in atherogenesis. C1q/TNF-related protein (CTRP) 5 is a novel secreted glycoprotein and its biological functions are largely undefined.

绝经后2型糖尿病LRP5基因多态性与骨量异常的研究

目的分析低密度脂蛋白受体相关蛋白5(low density lipoprotein receptor related protein 5,LRP5)rs556442、rs312778位点基因多态性及突变在绝经后女性2型糖尿病(type 2 diabetes mellitus,T2DM)患者中骨量异常的意义。方法收集2021年5月至2023年5月新疆石河子地区的142例绝经后女性资料进行回顾性分析,分为正常对照组(A组,n=29)、T2DM组(B组,n=30)、骨量降低组(C组,n=28)、骨量降低+T2DM组(D组,n=55)。收集记录相关基线资料,运用全自动生化测定仪测定受试者血糖、血脂及骨代谢指标。通过双能X线骨密度仪测定骨密度(bone mineral density BMD),LRP5基因位点多态性采用飞行时间质谱法(MALDI-TOF-MS)测定,采用SNPscan技术对上述SNP位点进行基因分型。结果①四组基线资料比较,绝经年限、年龄及腰臀比(waist hip ratio,WHR)比较差异具有统计学意义(P<0.05);②与A组相比,B组的空腹血糖(FPG)、糖化血红蛋白(HbA1c)升高(P<0.05);D组的FPG、HbA1c的血清学水平升高,甘油三酯(TG)血清学水平降低(P<0.05);③rs556442位点:与A组相比,D组基因型分布(AA/AG/GG基因型)有统计学意义(P<0.05);rs312778位点组间基因型(CC/CT/TT基因型)及等位基因分布频率均无统计学意义(P>0.05);④rs556442位点:与AA基因型相比,B、C组AG/GG基因型的股骨颈BMD水平降低;D组AG/GG型的HDL血清学水平降低(P<0.05)。rs312778位点:与CC基因型相比,A组HbA1C、FPG血清学水平较CT/TT基因型低(P<0.05);D组CT/TT基因型的低密度脂蛋白(LDL)血清学水平升高(P<0.05);⑤多元线性回归分析:rs556442位点,TG增加是腰L_(1~4)BMD降低的危险因素(P<0.05);rs312778位点,体质量指数(body mass index,BMI)降低是腰L_(1~4)及股骨颈BMD降低的危险因素,TG增加是腰L_(1~4)BMD降低的危险因素(P<0.05);⑥在rs556442、rs312778位点骨量异常与基因型分布均无统计学意义(P>0.05)。结论新疆石河子地区绝经后T2DM女性患者LRP5基因rs556442、rs312778基因位点的突变可能与骨量降低有关。

Roles of low?density lipoproteinreceptor?related protein 1 in tumors

Low-density lipoprotein receptor-related protein 1(LRP1,also known as CD91),a multifunctional endocytic and cell signaling receptor,is widely expressed on the surface of multiple cell types such as hepatocytes,fibroblasts,neurons,astrocytes,macrophages,smooth muscle cells,and malignant cells.Emerging in vitro and in vivo evidence demonstrates that LRP1 is critically involved in many processes that drive tumorigenesis and tumor progression.For example,LRP1 not only promotes tumor cell migration and invasion by regulating matrix metalloproteinase(MMP)-2and MMP-9 expression and functions but also inhibits cell apoptosis by regulating the insulin receptor,the serine/threonine protein kinase signaling pathway,and the expression of Caspase-3.LRPI-mediated phosphorylation of the extracellular signal-regulated kinase pathway and c-jun N-terminal kinase are also involved in tumor cell proliferation and invasion.In addition,LRP1 has been shown to be down-regulated by microRNA-205 and methylation of LRP1CpG islands.Furthermore,a novel fusion gene,LRP1-SNRNP25,promotes osteosarcoma cell invasion and migration.Only by understanding the mechanisms of these effects can we develop novel diagnostic and therapeutic strategies for cancers mediated by LRP1.

Low-density lipoprotein receptor-related protein 1 is a CROPs-associated receptor for Clostridioides infection toxin B

As the leading cause of worldwide hospital-acquired infection,Clostridioides difficile(C.difficile)infection has caused heavy economic and hospitalized burden,while its pathogenesis is not fully understood.Toxin B(Tcd B)is one of the major virulent factors of C.difficile.Recently,CSPG4 and FZD2 were reported to be the receptors that mediate Tcd B cellular entry.However,genetic ablation of genes encoding these receptors failed to completely block Tcd B entry,implicating the existence of alternative receptor(s)for this toxin.Here,by employing the CRISPR-Cas9 screen in CSPG4-deficient He La cells,we identified LDL receptor-related protein-1(LRP1)as a novel receptor for Tcd B.Knockout of LRP1 in both CSPG4-deficient He La cells and colonic epithelium Caco2 cells conferred cells with increased Tcd B resistance,while LRP1 overexpression sensitized cells to Tcd B at a low concentration.Co-immunoprecipitation assay showed that LRP1 interacts with full-length Tcd B.Moreover,CROPs domain,which is dispensable for Tcd B’s interaction with CSPG4 and FZD2,is sufficient for binding to LRP1.As such,our study provided evidence for a novel mechanism of Tcd B entry and suggested potential therapeutic targets for treating C.difficile infection.

LRP5基因多态性与绝经后妇女2型糖尿病伴骨质疏松症的相关性研究

目的探讨上海地区绝经后2型糖尿病和骨质疏松症妇女的低密度脂蛋白受体相关蛋白5基因多态性与骨密度、骨代谢、糖代谢的关系。方法选取上海市普陀区无亲缘关系的绝经后汉族妇女354例,其中骨质疏松组(A组)90例、2型糖尿病组(B组)96例、2型糖尿病伴骨质疏松组(C组)90例、健康老年对照组(D组)78例。运用双能X线骨密度仪检测腰椎(L2-4)及股骨颈骨密度,同时检测骨代谢指标:BALP、TRACP-5b;糖代谢指标:Hb A1c、FINS。应用基因测序技术检测LRP5基因A1330V位点多态性。采用协方差分析校正年龄、绝经年限、体重指数后比较LRP5基因多态性与骨密度的相关性。结果 A组LRP5基因A1330V位点CC型与CT/TT型相比腰椎骨密度增高(P<0.05),经年龄、绝经年限、BMI校正后仍有显著差异(P<0.01);D组LRP5基因A1330V位点多态性与Hb A1c相关(P<0.05),CC型较CT/TT型Hb A1c高,经年龄、绝经年限、BMI校正后无统计学意义(P>0.05)。结论上海地区汉族绝经后骨质疏松症妇女LRP5基因型与腰椎骨密度相关,提示LRP5基因可能是上海地区汉族绝经后骨质疏松症妇女的易感基因。2型糖尿病患者BMD增高,可能与BMI、胰岛素水平增高有关。LRP5基因可能不是上海地区绝经后2型糖尿病妇女的易感基因。

东亚人群LRP5基因A1330V位点多态性与骨密度相关性的Meta分析

目的利用Meta分析的方法,综合评价LRP5基因A1330V位点多态性与东亚人群骨密度(BMD)的相关性。方法计算机检索Pubmed、Embase、中国生物医学文献数据库和万方数据库数据库等,并手工检索相关杂志,收集有关东亚人群LRP5基因A1330V位点多态性的基因型频率与BMD相关性的研究。检索时间截止至2012年11月。在评价纳入研究质量,提取有效数据后,采用Stata 12.0软件进行Meta分析。结果共11项研究符合既定的纳入和排除标准,合计5906名研究对象。Meta分析结果显示:AA基因型较AV/VV基因型腰椎BMD高,且差异有统计学意义[SMD=0.107,95%CI(0.044,0.171)]。在股骨颈BMD方面,AA基因型高于AV/VV基因型[SMD=0.190,95%CI(0.034,0.346)]。AA基因型的桡骨、全身BMD也高于AV/VV基因型。但是,AA基因型群体的转子间BMD与AV/VV基因型的差异无统计学意义[SMD=0.090,95%CI(-0.029,1.143)]。除腰椎、转子间BMD以外,AA基因型群体的股骨颈、桡骨以及全身BMD高于VV基因型,但此基因型间比较的纳入研究数量过少,证据尚不充分。结论本Meta分析结果提示,东亚人群中LRP5基因A1330V位点的突变可能与骨密度的变化具有相关性,尤其AA基因型人群在股骨颈、腰椎部位有比AV/VV或VV基因型人群更高的骨密度值。但目前的结论尚需进一步大样本、高质量的研究去验证。

Liver as a new target organ in Alzheimer's disease:insight from cholesterol metabolism and its role in amyloid-beta clearance

Alzheimer's disease,the primary cause of dementia,is characterized by neuropathologies,such as amyloid plaques,synaptic and neuronal degeneration,and neurofibrillary tangles.Although amyloid plaques are the primary characteristic of Alzheimer's disease in the central nervous system and peripheral organs,targeting amyloid-beta clearance in the central nervous system has shown limited clinical efficacy in Alzheimer's disease treatment.Metabolic abnormalities are commonly observed in patients with Alzheimer's disease.The liver is the primary peripheral organ involved in amyloid-beta metabolism,playing a crucial role in the pathophysiology of Alzheimer's disease.Notably,impaired cholesterol metabolism in the liver may exacerbate the development of Alzheimer's disease.In this review,we explore the underlying causes of Alzheimer's disease and elucidate the role of the liver in amyloid-beta clearance and cholesterol metabolism.Furthermore,we propose that restoring normal cholesterol metabolism in the liver could represent a promising therapeutic strategy for addressing Alzheimer's disease.

家族性渗出性玻璃体视网膜病变患者LRP5基因突变研究

家族性渗出性玻璃体视网膜病变(familial exudative vitreoretinopathy,FEVR)是一种遗传性眼科疾病,主要特征为视网膜周边血管发育异常和病变。由于病变程度不同,临床表型可从无明显症状到眼睛完全失明。本文通过研究3个中国FEVR家系和1个散发型患者,探索其致病突变与疾病表型之间的关系。收集家系中患者及亲属的外周血制备基因组DNA,设计引物以扩增FEVR致病基因FZD4、LRP5、NDP和TSPAN12的外显子区域并通过Sanger法进行测序。结果发现,在LRP5基因上存在3个未在db SNP数据库及千人基因组计划数据库中报道过的杂合突变p.M181R、p.R399S和p.G503R,以及2个已发现但未在FEVR中报道过的杂合突变p.R494Q和p.G876S。生物信息学分析表明这5个突变位点均高度保守,为有害突变。荧光素酶报告基因实验证明了这5个突变均不能激活Norrin/β-catenin信号通路,进一步证明了这5个突变的致病性。该研究扩充了我国FEVR疾病的遗传数据库,可为该疾病的分子诊断提供依据。

绝经后女性LRP5与LRP6基因位点的多态性及交互作用与骨量的异常关系

目的LRP5基因位点的多态性与绝经后2型糖尿病(T2DM)女性患者骨密度降低有关。文中探讨绝经后女性L.RP5与LRP6基因位点的多态性及交互作用与骨密度的关系。方法选取2018年12月-2019年12月期间,石河子大学医学院第一-附属医院272例绝经后女性临床资料。根据患者骨密度测量结果分为骨量正常组(对照组)、骨量异常组(ABM组),收集分析各组患者基线资料,测定骨代谢指标。采用DEXA测定腰椎1-4(L.4)和股骨颈(FN)的BMID。采用飞行时间质谱法(MALDI-TOF MS法)测定LRP5基因rs2306862、rs41494349位点和LRP6基因rs10743980、rs2302685位点多态性及基因频率分布。结果Logistic回归分析显示,LRP5基因rs2306862位点CT、CT/TT基因型患ABM的风险高于CC基因型(OR=2.353,95%C1=1.039~6.186;0R=2.434,95%CI=1.071,5.531;P<0.05);LRP6基因rs2302685位点TC基因型患ABM的风险高于TT基因型(OR=2.951,95%Cl=1.030~8.457,P<0.05)。余各SNP位点未见明显异常(P>0.05)。rs2306862&rs 10743980、rs414943498rs2302685&rs10743980位点的多态性与ABM的发生存在协同作用,为ABM发生的危险性因素(P<0.05);rs2306862、rs2302685、rs41494349&rs2302685&rs10743980位点的多态性&年龄与ABM的发生存在协同作用,为ABM发生的危险性因素(P<0.05);各位点基因多态性&绝经年限与ABM的发生存在交互作用(P>0.05)。结论新疆绝经后女性LRP5-s2306862和LRP6-rs2302685多态性.基因-基因、基因-年龄的交互作用与ABM的风险增高有关。

新疆绝经后女性2型糖尿病LRP5基因rs3736228、rs3781586位点的基因多态性及突变与糖、脂、骨代谢关系的研究

目的观察新疆石河子地区绝经后女性2型糖尿病(T2DM)患者糖、脂、骨代谢特征及骨密度(BMD)情况,探讨该人群中低密度脂蛋白受体相关蛋白5(LRP5)基因rs3736228、rs3781586位点的基因多态性及突变与糖、脂、骨代谢指标的关系。方法将新疆石河子地区2016年10月—2017年10月社区、医院门诊及住院绝经后女性按照纳入标准和排除标准选取136例为研究对象,根据患者病史、糖耐量实验及骨密度仪测定骨密度分4组,糖耐量正常与骨量正常组(A组),糖耐量正常与骨量异常组(B组),T2DM与骨量正常组(C组),T2DM与骨量异常组(D组)。测定并记录患者年龄、绝经年限等基线资料,计算体质指数(BMI)等,并检测糖代谢指标(空腹血糖等)、骨代谢指标(血Ca等)、脂代谢指标(甘油三酯等)。采用MALDI-TOF-MS法测定LRP5基因该两个位点基因多态性并进行统计分析。结果①糖代谢指标:与A组比较,C组、D组FPG、HbA1c均高于A组(P<0.01)。脂代谢指标:与A组比较,B组、D组TG低于A组(P<0.05)。骨代谢指标:与A组比较,B组、D组BMD(L1-4)、BMD(股骨颈)低于A组(P<0.01)。②LRP5基因该两个位点SNP基因分型分布符合Hardy-Weinberg遗传平衡定律(P>0.05);同时,该两个位点不同基因型的分布频率和等位基因频率在组间的比较经Pearson Chi-Square检验后发现暂无显著差异(P>0.05)。③LRP5基因rs3736228位点:A组,与CC型(野生型)相比,CT/TT型(突变型)甘油三酯(TG)降低(P<0.05),BMD(L1-4)降低(P<0.05);C组,与CC型(野生型)相比,CT/TT型(突变型)高密度脂蛋白(HDL-C)升高(P<0.01),磷(P)升高(P<0.05);LRP5基因rs3781586位点:B组,与GG型(野生型)相比,GT/TT(突变型)高密度脂蛋白(HDL-C)升高(P<0.05)。结论在新疆石河子地区绝经后女性2型糖尿病人群中,LRP5基因rs3736228、rs3781586位点的基因多态性可能与糖代谢无关,但LRP5基因rs3736228位点的突变可能与脂代谢(TG、HDL-C)、骨代谢(P、BMD)有关,rs3781586位点的突变可能与脂代谢(HDL)有关。

Lack of Association of Common Polymorphism of LRP1 Gene with Myocardial Infarction in a Chinese Han Population

This study examined the association of a common polymorphic allele（25G） of the low-density lipoprotein receptor-related protein1（LRP1） gene with myocardial infarction（MI）.The genotypes of LRP1 25CG（rs35282763） were determined in 347 MI patients and 347 age-and sex-frequency-matched controls from an unrelated Chinese Han population.Factor Ⅷ（FⅧ） levels were measured in the MI patients and controls by chromogenic assay and enzyme-linked immunosor-bent assay（ELISA）.The results showed that LRP1 25CG（rs35282763） genotype distribution did not differ significantly between patients（n=206 for 25CC,n=122 for 25CG） and controls（n=191 for 25CC,n=126 for 25CG;P0.05）.The 25G allele was not associated with a reduced risk of MI（P0.05）.Further stratifications for age,sex,and other cardiovascular risk factors did not affect the negative findings.It was concluded that the presence of the G allele at the 25CG（rs35282763） polymorphism of the LRP1 is not associated with a reduced risk of MI,and genotyping for LRP1 25CG（rs35282763） polymor-phism is not useful in assessing the individual risk of MI.

骨硬化蛋白单克隆抗体治疗骨质疏松

背景:骨硬化蛋白可负向调节骨代谢,其单克隆抗体可拮抗负向调节作用,在促进骨形成的同时抑制骨吸收。目的:旨在探讨骨硬化蛋白单克隆抗体在治疗骨质疏松中的作用机制及最新进展。方法:由第一作者应用计算机检索 PubMed、中国期刊全文数据库(CNKI)、维普数据库和万方数据库(2005年 5 月至 2013 年 5 月)相关文献。在标题、摘要、关键词中以"osteoporosis,antibody,sclerostin,Wnt,SOST"或"骨质疏松,单克隆抗体,骨硬化蛋白,Wnt 通路"为检索词进行检索。选择文章内容与骨硬化蛋白单克隆抗体有关者,同一领域文献则选择近期发表在权威杂志文章。结果与结论:初检得到 170 篇文献,根据纳入标准选择关于骨硬化蛋白单克隆抗体的 54 篇文献进行综述。骨硬化蛋白通过与 Wnt 经典信号通路共受体低密度脂蛋白受体相关蛋白 5/6 结合以阻断 Wnt 通路,从而抑制成骨细胞分化及矿化。其单克隆抗体通过与骨硬化蛋白特异性结合而间接促进骨形成、抑制骨吸收,在骨质疏松的治疗中有重大意义。同时,与其他治疗方法相比,骨硬化蛋白作用靶点的组织特异性及骨硬化蛋白单克隆抗体的结合特异性为其增加了应用优势。

Comparison of three fluorescence labeling and tracking methods of endothelial progenitor cells in laser-injured retina

AIM： To compare three kinds of fluorescent probes for in vitro labeling and in vivo tracking of endothelial progenitor cells（EPCs） in a mouse model of laser-induced retinal injury.METHODS： EPCs were isolated from human umbilical cord blood mononuclear cells and labeled with three different fluorescent probes： 5-（and-6）-carboxyfluorescein diacetate succinimidyl ester（CFSE）, 1,1′-dilinoleyl-3,3,3′,3′-tetramethylindo-carbocyanine perchlorate linked acetylated low-density lipoprotein（Di I-Ac LDL）, and green fluorescent protein（GFP）. The fluorescent intensity of EPCs was examined by confocal microscopy. Survival rate of labeled EPCs was calculated with trypan blue staining, and their adhesive capability was assessed. A mouse model of retinal injury was induced by laser, and EPCs were injected into the vitreous cavity. Frozen section and fluorescein angiography on flat-mounted retinal samples was employed to track the labeled EPCs in vivo.RESULTS： EPCs labeled with CFSE and Di I-Ac LDL exhibited an intense green and red fluorescence at the beginning; the fluorescence intensity decreased gradually to 20.23% and 49.99% respectively, after 28 d. On the contrary, the florescent intensity of GFP-labeled EPCs increased in a time-dependent manner. All labeled EPCs showed normal morphology and no significant change in survival and adhesive capability. In the mouse model, transplantation of EPCs showed a protective effect against retinal injury. EPCs labeled with CFSE and Di I-Ac LDL were successfully tracked in mice during the development of retinal injury and repair; however, GFP-labeled EPCs were not detected in the laser-injured mouse retina.CONCLUSION： The three fluorescent markers used in this study have their own set of advantages and disadvantages. CFSE and Di I-Ac LDL are suitable for short-term EPClabeling, while GFP should be used for long-term labeling. The choice of fluorescent markers should be guided by the purpose of the study.

低密度脂蛋白受体相关蛋白5基因的基因组结构

目的 确定低密度脂蛋白受体相关蛋白 5 (low density lipoprotein receptor related protein 5 ,L RP5 )的基因组结构。方法 以 L RP5基因的 c DNA序列为线索 ,采用计算机杂交方法首先通过对比分析该基因的 c DNA序列和基因组序列 ,初步确定 L RP5基因的基因组结构 ;按分析得到的基因组结构设计引物 ,扩增并测定外显子序列和外显子内含子接头序列 ,确定该基因的基因组结构。结果 L RP5基因的基因组 DNA全长为131.6 kb,含有 2 3个外显子和 2 2个内含子 ;在编码序列中检测到 3个单核苷酸多态 ,即位于第 2外显子的A45 9G、位于第 10外显子的 C2 2 2 0 T和位于第 2 1外显子的 G44 16 C ;L RP5基因含有 4个已知的短串联重复序列 ,即 D11S1917、D11S40 87、D11S1337和 D11S4178,它们分别位于该基因的 5′端和第 1、4、13内含子内。结论 L RP5基因的基因组结构的确定 ,为分析该基因突变和功能研究奠定了基础。

LRP5基因多态性与慢性阻塞性肺疾病并发骨质疏松的关联性研究

目的探索中国北方汉族人群中低密度脂蛋白受体相关蛋白5(LRP5)基因单核苷酸多态性与慢性阻塞性肺疾病(简称慢阻肺)并发骨质疏松风险的相关性。方法回顾性纳入379例中国北方汉族慢阻肺急性加重收治的住院患者,分为非骨质疏松组与骨质疏松组,提取患者全血样本的基因组DNA,进行遗传关联性分析。利用UCSC基因组浏览器和Haploview4.2软件确定LRP5基因的标签单核苷酸多态性(tag SNP)。应用Sequenom Mass ARRAY SNP检测技术对所有患者LRP5基因的tag SNP进行基因型分析。采用Logistic回归方法,研究不同遗传模式下各tag SNP的比数比(OR)和置信区间(CI),评估LRP5基因单核苷酸多态性与慢阻肺并发骨质疏松的相关性。结果对慢阻肺急性加重患者行遗传关联研究,LRP5基因中所选的8个tag SNP(rs312016 T/C,rs312017 C/T,rs312018 A/G,rs3736228 C/T,rs901823 T/C,rs589963 G/A,rs638051 A/G,rs671494 C/A)中,rs901823与慢阻肺并发骨质疏松具有显著关联,携带C/C基因型的慢阻肺患者发生骨质疏松的风险较T/T和C/T为高(在隐性遗传模式下,C/C比T/T+C/T,OR=9.42,95%CI=2.01~44.29,P=0.0004318)。结论LRP5基因中rs901823与慢阻肺并发骨质疏松患者存在明确相关性。LRP5基因在慢阻肺并发骨质疏松的易感性及发病机制上有待进一步研究。