旨在研究中国本土槐猪和引入瘦肉型猪(杜洛克猪、大约克夏猪、长白猪)在生长育肥相关基因MC4R和MSTN、脊椎数量相关基因NR6A1和VRTN、肉质性状相关基因PHKG1和PRKAG3以及病原感染相关基因SYNGR2和FUT1这8个基因9个SNP位点的遗传变异特...旨在研究中国本土槐猪和引入瘦肉型猪(杜洛克猪、大约克夏猪、长白猪)在生长育肥相关基因MC4R和MSTN、脊椎数量相关基因NR6A1和VRTN、肉质性状相关基因PHKG1和PRKAG3以及病原感染相关基因SYNGR2和FUT1这8个基因9个SNP位点的遗传变异特征。利用竞争性等位基因特异性PCR(KASP)和聚合酶链反应-限制性片段长度多态性(PCR-restriction fragment length polymorphism,PCR-RFLP)方法对突变位点进行基因分型,根据原始文献对各位点进行有利等位基因判定,并制作各猪种在各位点有利等位基因和不利等位基因的百分比示意图。结果:槐猪在NR6A1基因突变位点存在一定多态性,有利等位基因频率为0.24,其他位点表现为单一基因型,其中,PHKG1、PRKAG3突变位点为有利等位基因,而在MC4R、MSTN、VRTN、SYNGR2和FUT1突变位点为不利等位基因;杜洛克猪在MC4R、NR6A1、VRTN、SYNGR2和FUT1突变位点有利等位基因占优,然而,PHKG1基因不利等位基因仍有一定的比例;大约克夏猪在MC4R、SYNGR2、NR6A1和VRTN基因突变位点有利等位基因占优,而其他位点为不利等位基因;长白猪在MC4R、MSTN、PRKAG3(p.Val249Ile)和SYNGR2这4个基因突变位点不利基因占优;杜洛克猪在VRTN基因、长白猪在MC4R基因突变位点处于遗传不平衡状态(P<0.05)。以上结果为槐猪品种保护与利用以及瘦肉型猪种分子遗传标记选育提供了有益的信息。展开更多
目的探讨血浆致动脉粥样硬化指数(atherogenic index of plasma,AIP)及残余胆固醇/高密度脂蛋白胆固醇比值(residual cholesterol/high-density lipoprotein cholesterol,RC/HDL-C)对瘦型代谢相关脂肪性肝病(metabolism-associated fatt...目的探讨血浆致动脉粥样硬化指数(atherogenic index of plasma,AIP)及残余胆固醇/高密度脂蛋白胆固醇比值(residual cholesterol/high-density lipoprotein cholesterol,RC/HDL-C)对瘦型代谢相关脂肪性肝病(metabolism-associated fatty liver disease,MAFLD)的预测价值。方法选择2023年7月至2023年12月在海军军医大学第一附属医院健康管理中心参加年度体检的瘦型MAFLD患者(n=200)和瘦型健康对照者(n=91),比较两组的肝肾功能、血脂、AIP及RC/HDL-C等,二元Logistic回归分析瘦型MAFLD的危险因素,采用ROC曲线分析AIP、RC/HDL-C、BMI等对瘦型MAFLD的预测价值。结果瘦型MAFLD患者的年龄大、男性占比多,血压、BMI、ALT、AST、γ-GT、AKP、Cr、UA、FBG、TG、TC、LDL-C、RC、AIP、RC/HDL-C水平均显著高于瘦型健康对照组,而HDL-C水平显著低于瘦型健康对照组(P<0.05)。二元Logistic回归分析结果显示,年龄、男性、BMI、ALT、AIP是瘦型MAFLD的独立危险因素。AIP联合ALT、BMI作为诊断模型时预测瘦型MAFLD的AUC为0.892,敏感度为86.5%,特异度为76.9%;RC/HDL-C的预测效能欠佳(AUC=0.6655,95%CI:0.6025~0.7286)。AIP与RC/HDL-C存在中等程度的相关(r^(2)=0.5122,P<0.0001),与BMI弱相关(r^(2)=0.1304,P<0.0001)。AIP越高,瘦型MAFLD的患病率越高。结论AIP与瘦型MAFLD发生风险呈正相关并是其独立危险因素,AIP联合BMI、ALT是瘦型MAFLD的有效预测指标。展开更多
迈尔斯-布里格斯人格类型指标分类(Myers-Briggs type indicator,MBTI)测验被认为是预测人格类型最热门和最可靠的方法之一,但传统的问卷调查或专业人士咨询的检测方式在实施过程中面临着高昂的人力和时间成本以及潜在的隐私泄露风险。...迈尔斯-布里格斯人格类型指标分类(Myers-Briggs type indicator,MBTI)测验被认为是预测人格类型最热门和最可靠的方法之一,但传统的问卷调查或专业人士咨询的检测方式在实施过程中面临着高昂的人力和时间成本以及潜在的隐私泄露风险。针对这类问题,本文提出一种基于自适应神经模糊推理系统(adaptive-network-based fuzzy inference system,ANFIS)的MBTI模型(ANFIS-MBTI)。该模型将深度神经网络与模糊逻辑推理有机融合,使其能够通过自学习和参数优化策略,灵活适应并精准捕捉社交文本数据中隐含的非线性、模糊和不确定性特征,自动识别出分析社交媒体数据集中的用户行为模式,从而揭示其在信息获取、决策制定及行为方式等方面的心理特质和性格特点。实验结果表明,本文构建的ANFIS-MBTI模型能够高效而准确地从社交文本中挖掘出16种不同的MBTI人格类型,其多层级特征融合机制使人格分类任务的自动化程度显著提升;同时通过模糊规则约束有效控制人工干预需求与数据隐私风险,为大规模在线人格分析提供了具有可扩展性的创新技术路径。展开更多
BACKGROUND The annual incidence of metabolic-associated fatty liver disease(MAFLD)in China has been increasing and is often overlooked owing to its insidious charac-teristics.Approximately 50%of the patients have a no...BACKGROUND The annual incidence of metabolic-associated fatty liver disease(MAFLD)in China has been increasing and is often overlooked owing to its insidious charac-teristics.Approximately 50%of the patients have a normal weight or are not obese.They are said to have lean-type MAFLD,and few studies of such patients are available.Because MAFLD is associated with abnormal lipid metabolism,lipid-targeted metabolomics was used in this study to provide experimental evidence for early diagnosis and pathogenesis.MAFLD and analyze metabolic pathways.UPLC-Q-Orbitrap/MS content determination was used to determine serum palmitic acid(PA),oleic acid(OA),linoleic acid(LA),and arachidonic acid(AA)levels in lean-type MAFLD patients.RESULTS Urea nitrogen and uric acid levels were higher in lean-type MAFLD patients than in healthy individuals(P<0.05).Alanine transaminase and cholinesterase levels were higher in lean-type MAFLD patients than in healthy indi-viduals(P<0.01).The expression of high-density lipoprotein and apolipoprotein A-1 were lower in lean-type MAFLD patients than in healthy individuals(P<0.05)and the expression of triglycerides and fasting blood glucose were increased(P<0.01).A total of 65 biomarkers that affected the synthesis and metabolism of fatty acids were found with P<0.05 and variable importance in projection>1.The levels of PA,OA,LA,and AA were significantly increased compared with healthy individuals.CONCLUSION The metabolic profiles of lean-type MAFLD patients and healthy participants differed significantly,yielding 65 identified biomarkers.PA,OA,LA,and AA exhibited the most significant changes,offering valuable clinical guidance for prevention and treatment of lean-type MAFLD.展开更多
文摘旨在研究中国本土槐猪和引入瘦肉型猪(杜洛克猪、大约克夏猪、长白猪)在生长育肥相关基因MC4R和MSTN、脊椎数量相关基因NR6A1和VRTN、肉质性状相关基因PHKG1和PRKAG3以及病原感染相关基因SYNGR2和FUT1这8个基因9个SNP位点的遗传变异特征。利用竞争性等位基因特异性PCR(KASP)和聚合酶链反应-限制性片段长度多态性(PCR-restriction fragment length polymorphism,PCR-RFLP)方法对突变位点进行基因分型,根据原始文献对各位点进行有利等位基因判定,并制作各猪种在各位点有利等位基因和不利等位基因的百分比示意图。结果:槐猪在NR6A1基因突变位点存在一定多态性,有利等位基因频率为0.24,其他位点表现为单一基因型,其中,PHKG1、PRKAG3突变位点为有利等位基因,而在MC4R、MSTN、VRTN、SYNGR2和FUT1突变位点为不利等位基因;杜洛克猪在MC4R、NR6A1、VRTN、SYNGR2和FUT1突变位点有利等位基因占优,然而,PHKG1基因不利等位基因仍有一定的比例;大约克夏猪在MC4R、SYNGR2、NR6A1和VRTN基因突变位点有利等位基因占优,而其他位点为不利等位基因;长白猪在MC4R、MSTN、PRKAG3(p.Val249Ile)和SYNGR2这4个基因突变位点不利基因占优;杜洛克猪在VRTN基因、长白猪在MC4R基因突变位点处于遗传不平衡状态(P<0.05)。以上结果为槐猪品种保护与利用以及瘦肉型猪种分子遗传标记选育提供了有益的信息。
文摘目的探讨血浆致动脉粥样硬化指数(atherogenic index of plasma,AIP)及残余胆固醇/高密度脂蛋白胆固醇比值(residual cholesterol/high-density lipoprotein cholesterol,RC/HDL-C)对瘦型代谢相关脂肪性肝病(metabolism-associated fatty liver disease,MAFLD)的预测价值。方法选择2023年7月至2023年12月在海军军医大学第一附属医院健康管理中心参加年度体检的瘦型MAFLD患者(n=200)和瘦型健康对照者(n=91),比较两组的肝肾功能、血脂、AIP及RC/HDL-C等,二元Logistic回归分析瘦型MAFLD的危险因素,采用ROC曲线分析AIP、RC/HDL-C、BMI等对瘦型MAFLD的预测价值。结果瘦型MAFLD患者的年龄大、男性占比多,血压、BMI、ALT、AST、γ-GT、AKP、Cr、UA、FBG、TG、TC、LDL-C、RC、AIP、RC/HDL-C水平均显著高于瘦型健康对照组,而HDL-C水平显著低于瘦型健康对照组(P<0.05)。二元Logistic回归分析结果显示,年龄、男性、BMI、ALT、AIP是瘦型MAFLD的独立危险因素。AIP联合ALT、BMI作为诊断模型时预测瘦型MAFLD的AUC为0.892,敏感度为86.5%,特异度为76.9%;RC/HDL-C的预测效能欠佳(AUC=0.6655,95%CI:0.6025~0.7286)。AIP与RC/HDL-C存在中等程度的相关(r^(2)=0.5122,P<0.0001),与BMI弱相关(r^(2)=0.1304,P<0.0001)。AIP越高,瘦型MAFLD的患病率越高。结论AIP与瘦型MAFLD发生风险呈正相关并是其独立危险因素,AIP联合BMI、ALT是瘦型MAFLD的有效预测指标。
基金Supported by Shanghai Natural Science Foundation,No.22ZR1455900Shanghai Putuo District Health System Science and Technology Innovation Project Key Project,No.ptkwws202201Shanghai Putuo District Xinglin Excellent Youth Talent Training Program,No.ptxlyq2201.
文摘BACKGROUND The annual incidence of metabolic-associated fatty liver disease(MAFLD)in China has been increasing and is often overlooked owing to its insidious charac-teristics.Approximately 50%of the patients have a normal weight or are not obese.They are said to have lean-type MAFLD,and few studies of such patients are available.Because MAFLD is associated with abnormal lipid metabolism,lipid-targeted metabolomics was used in this study to provide experimental evidence for early diagnosis and pathogenesis.MAFLD and analyze metabolic pathways.UPLC-Q-Orbitrap/MS content determination was used to determine serum palmitic acid(PA),oleic acid(OA),linoleic acid(LA),and arachidonic acid(AA)levels in lean-type MAFLD patients.RESULTS Urea nitrogen and uric acid levels were higher in lean-type MAFLD patients than in healthy individuals(P<0.05).Alanine transaminase and cholinesterase levels were higher in lean-type MAFLD patients than in healthy indi-viduals(P<0.01).The expression of high-density lipoprotein and apolipoprotein A-1 were lower in lean-type MAFLD patients than in healthy individuals(P<0.05)and the expression of triglycerides and fasting blood glucose were increased(P<0.01).A total of 65 biomarkers that affected the synthesis and metabolism of fatty acids were found with P<0.05 and variable importance in projection>1.The levels of PA,OA,LA,and AA were significantly increased compared with healthy individuals.CONCLUSION The metabolic profiles of lean-type MAFLD patients and healthy participants differed significantly,yielding 65 identified biomarkers.PA,OA,LA,and AA exhibited the most significant changes,offering valuable clinical guidance for prevention and treatment of lean-type MAFLD.
