single nucleotide polymorphisms

单核苷酸多态性
  • 文章类型: Journal Article
    脑出血(ICH)是一种严重的中风,死亡率高,治疗选择有限。虽然传统的危险因素如高血压已经得到了充分的研究,情绪状态作为ICH急性触发因素的作用尚不清楚.这项研究采用孟德尔随机化(MR)来研究焦虑和焦虑的情绪特征与ICH发生率之间的因果关系。
    我们使用了双样本MR方法,利用来自全基因组关联研究(GWAS)的情绪特征和ICH的汇总数据。主要分析使用逆方差加权(IVW)方法进行,辅以多种敏感性分析,包括最大似然和MRPRESSO方法。
    我们的MR分析揭示了情感特质“忧虑/焦虑情绪”与ICH之间的稳健且显着的因果关系,由195个工具变量(SNP)支持。比值比(OR)为2.98(95%CI:1.16,7.61),p值为0.0229。敏感性分析证实了这些发现,提高我们结果的可靠性。相比之下,其他情绪特征,如“紧张的感觉”和“敏感/伤害的感觉”没有表现出显著的关联,加强我们主要发现的特异性。
    我们的研究提供了令人信服的证据,证明忧虑和焦虑的情绪特征与ICH发病率之间存在因果关系。为我们对这一毁灭性状况的理解提供了一个新的层面,并为更细微的风险分层和预防策略铺平了道路。
    UNASSIGNED: Intracerebral hemorrhage (ICH) is a severe form of stroke with high mortality and limited treatment options. While traditional risk factors like hypertension have been well-studied, the role of emotional states as acute triggers for ICH remains unclear. This study employs Mendelian Randomization (MR) to investigate the causal relationship between emotional traits of worry and anxiety and the incidence of ICH.
    UNASSIGNED: We used a two-sample MR approach, leveraging summary-level data from genome-wide association studies (GWAS) for emotional traits and ICH. The primary analysis was conducted using the Inverse-Variance Weighted (IVW) method, supplemented by multiple sensitivity analyses including Maximum Likelihood and MR PRESSO methods.
    UNASSIGNED: Our MR analysis revealed a robust and significant causal relationship between the emotional trait \"Worrier/anxious feelings\" and ICH, supported by 195 instrumental variables (SNPs). The odds ratio (OR) was 2.98 (95% CI: 1.16, 7.61) with a p-value of 0.0229. Sensitivity analyses corroborated these findings, enhancing the reliability of our results. In contrast, other emotional traits such as \"Nervous feelings\" and \"Sensitivity/hurt feelings\" did not show significant associations, reinforcing the specificity of our primary finding.
    UNASSIGNED: Our study provides compelling evidence for a causal relationship between the emotional traits of worry and anxiety and the incidence of ICH, offering a new dimension in our understanding of this devastating condition and paving the way for more nuanced risk stratification and preventive strategies.
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  • 文章类型: Journal Article
    目的:偏头痛是一种经常在家庭中出现的疾病,但其复杂的遗传背景仍不清楚。本研究旨在确定影响偏头痛的遗传因素及其与家族病史的潜在关联。
    方法:我们对台湾1,561名门诊偏头痛患者和473名无偏头痛患者进行了全面的全基因组关联研究,包括有或没有偏头痛家族史的汉族个体。通过分析患者及其亲属的详细头痛史,我们旨在分离与偏头痛相关的潜在遗传标记,同时考虑性别等因素,情节vs.慢性偏头痛,和光环的存在。
    结果:我们揭示了新的遗传风险位点,包括DEAD-Box解旋酶1中的rs2287637和吞噬和细胞运动1中的长基因间非蛋白质编码RNA1804和rs12055943,与偏头痛家族史相关。我们还发现了与发作性偏头痛相关的中胚层后部BHLH转录因子2下游的遗传位置,而泛素特异性肽酶26外显子区域内的基因座,双特异性磷酸酶9和妊娠上调的非普遍存在的CaM激酶基因间区域,聚(ADP-核糖)聚合酶1和STUM与慢性偏头痛有关。我们还确定了与先兆的存在或不存在相关的遗传区域。在女性患者中主要观察到LINC02561和尿皮质素3之间的基因座。此外,在对照组中,三种不同的单核苷酸多态性与偏头痛家族史相关.
    结论:这项研究在中国汉族人群中发现了与偏头痛及其家族史相关的新的遗传位置,加强偏头痛的遗传背景。这些发现指出了应该进一步研究的潜在候选基因。
    OBJECTIVE: Migraine is a condition that is often observed to run in families, but its complex genetic background remains unclear. This study aimed to identify the genetic factors influencing migraines and their potential association with the family medical history.
    METHODS: We performed a comprehensive genome-wide association study of a cohort of 1,561 outpatients with migraine and 473 individuals without migraine in Taiwan, including Han Chinese individuals with or without a family history of migraine. By analyzing the detailed headache history of the patients and their relatives we aimed to isolate potential genetic markers associated with migraine while considering factors such as sex, episodic vs. chronic migraine, and the presence of aura.
    RESULTS: We revealed novel genetic risk loci, including rs2287637 in DEAD-Box helicase 1 and long intergenic non-protein coding RNA 1804 and rs12055943 in engulfment and cell motility 1, that were correlated with the family history of migraine. We also found a genetic location downstream of mesoderm posterior BHLH transcription factor 2 associated with episodic migraine, whereas loci within the ubiquitin-specific peptidase 26 exonic region, dual specificity phosphatase 9 and pregnancy-upregulated non-ubiquitous CaM kinase intergenic regions, and poly (ADP-ribose) polymerase 1 and STUM were linked to chronic migraine. We additionally identified genetic regionsassociated with the presence or absence of aura. A locus between LINC02561 and urocortin 3 was predominantly observed in female patients. Moreover, three different single-nucleotide polymorphisms were associated with the family history of migraine in the control group.
    CONCLUSIONS: This study has identified new genetic locations associated with migraine and its family history in a Han Chinese population, reinforcing the genetic background of migraine. The findings point to potential candidate genes that should be investigated further.
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  • 文章类型: Journal Article
    抗癌药物紫杉醇从体内清除的速率显著影响其剂量和化疗有效性。重要的是,紫杉醇清除率因个体而异,主要是因为遗传多态性。这种代谢变异性源于受多个单核苷酸多态性(SNP)影响的非线性过程。传统的生物信息学方法很难准确地分析这个复杂的过程,目前,没有建立有效的算法来研究SNP相互作用。
    我们开发了一种新的机器学习方法,称为GEP-CSIs数据挖掘算法。这个算法,GEP的高级版本,使用线性代数计算来处理离散变量。GEP-CSI算法根据非小细胞肺癌患者的紫杉醇清除率数据和遗传多态性计算适应度函数评分。将数据分为用于分析的主要集和验证集。
    我们确定并验证了1184个具有最高适应度函数值的三SNP组合。值得注意的是,发现SERPINA1、ATF3和EGF通过协调先前报道的在紫杉醇清除中显著的基因的活性而间接影响紫杉醇清除。特别有趣的是在基因FLT1,EGF和MUC16中发现了三种SNP的组合。这些SNP相关蛋白被证实在蛋白质-蛋白质相互作用网络中相互作用,为进一步探索其功能作用和机制奠定了基础。
    我们成功开发了一种有效的深度学习算法,专为SNP相互作用的细微差别挖掘而设计,利用紫杉醇清除率和个体遗传多态性的数据。
    UNASSIGNED: The rate at which the anticancer drug paclitaxel is cleared from the body markedly impacts its dosage and chemotherapy effectiveness. Importantly, paclitaxel clearance varies among individuals, primarily because of genetic polymorphisms. This metabolic variability arises from a nonlinear process that is influenced by multiple single nucleotide polymorphisms (SNPs). Conventional bioinformatics methods struggle to accurately analyze this complex process and, currently, there is no established efficient algorithm for investigating SNP interactions.
    UNASSIGNED: We developed a novel machine-learning approach called GEP-CSIs data mining algorithm. This algorithm, an advanced version of GEP, uses linear algebra computations to handle discrete variables. The GEP-CSI algorithm calculates a fitness function score based on paclitaxel clearance data and genetic polymorphisms in patients with nonsmall cell lung cancer. The data were divided into a primary set and a validation set for the analysis.
    UNASSIGNED: We identified and validated 1184 three-SNP combinations that had the highest fitness function values. Notably, SERPINA1, ATF3 and EGF were found to indirectly influence paclitaxel clearance by coordinating the activity of genes previously reported to be significant in paclitaxel clearance. Particularly intriguing was the discovery of a combination of three SNPs in genes FLT1, EGF and MUC16. These SNPs-related proteins were confirmed to interact with each other in the protein-protein interaction network, which formed the basis for further exploration of their functional roles and mechanisms.
    UNASSIGNED: We successfully developed an effective deep-learning algorithm tailored for the nuanced mining of SNP interactions, leveraging data on paclitaxel clearance and individual genetic polymorphisms.
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  • 文章类型: Journal Article
    多发性骨髓瘤(MM),起源于骨髓的浆细胞的恶性疾病,受遗传因素的影响很大。虽然血浆脂质体已经与MM有关,他们潜在的因果关系的性质还有待阐明。本研究旨在使用孟德尔随机化(MR)分析来探索这种关系。
    在全基因组关联研究(GWAS)汇集数据库中,从7,174名芬兰个体的血浆脂质组学数据中鉴定了脂质体相关的遗传工具变量(IVs)。MM汇集的数据集来自GWAS荟萃分析,包括150,797名个体,包括598名MM患者和218,194名对照。这些静脉注射进行了MR分析,坚持严格的相关性标准,独立性,以及排除混杂因素。逆方差加权(IVW)方法,MR-Egger方法,加权中位数(WM)法,和简单中位数用于MR分析评估,在Cochran的Q测试旁边,MR-Egger截获,MR-Pleiotropy残差和离群值(MR-RESSO)方法,和用于评估异质性的留一法分析,多重性,和工具偏见。
    该研究确定了88个有意义的,独立的单核苷酸多态性(SNP)作为MR分析的IVs,每个都有一个大于10的F统计值,表明对弱仪器偏差的鲁棒性。IVW分析显示六种血浆脂质体成分与MM风险之间存在关联(p<0.05)。磷脂酰肌醇(16:0_18:1)血清水平(比值比[OR]=1.769,95%置信区间[CI]:1.132-2.763,p=0.012)和三酰甘油(56:4)水平(p=0.026,OR=1.417,95%CI:1.042-1.926)与多发性骨髓瘤的发展风险呈正相关。磷脂酰乙醇胺(18:0_20:4)(p=0.004,95%CI:0.621-0.916,OR=0.754),磷脂酰胆碱(18:2_20:4)(p=0.004,OR=0.680,95%CI:0.519-0.889),甾醇酯(27:1/18:3)水平(p=0.013,OR=0.677,95%CI:0.498-0.922),和磷脂酰胆碱(O-18:2_20:4)水平(OR=0.710,95%CI:0.517-0.913,p=0.033)与发生多发性骨髓瘤的风险呈负相关。Cochran的Q检验没有检测到统计方法的异质性,MR-RESSO检验或MR-Egger截距也未检测到水平多效性;留一法分析证实了个体SNP不存在偏倚.
    我们的发现表明血浆脂质体成分与MM风险之间存在复杂的关系。血清三酰甘油和磷脂酰肌醇水平升高与MM风险呈正相关。而某些磷脂和甾醇酯提供保护作用。这项研究为脂质体在多发性骨髓瘤病理中的临床相关性提供了有价值的见解。
    UNASSIGNED: Multiple myeloma (MM), a malignant disease of plasma cells originating in the bone marrow, is influenced significantly by genetic factors. Although plasma liposomes have been linked to MM, the nature of their potential causal relationship remains to be elucidated. This study aims to explore this relationship using Mendelian randomization (MR) analysis.
    UNASSIGNED: Liposome-associated genetic instrumental variables (IVs) were identified from plasma lipidomics data of 7,174 Finnish individuals within a Genome-Wide Association Study (GWAS) pooled database. A MM pooled dataset was sourced from a GWAS meta-analysis encompassing 150,797 individuals, including 598 MM patients and 218,194 controls. These IVs underwent MR analysis, adhering to strict criteria for correlation, independence, and the exclusion of confounders. The inverse variance weighted (IVW) method, MR-Egger method, weighted median (WM) method, and simple median were utilized for MR analysis assessment, alongside Cochran\'s Q test, MR-Egger intercept, MR-Pleiotropy Residual Sum and Outlier (MR-RESSO) method, and leave-one-out analysis for evaluating heterogeneity, multiplicity, and instrumental bias.
    UNASSIGNED: The study identified 88 significant, independent single nucleotide polymorphisms (SNPs) as IVs for MR analysis, each with an F-statistic value above 10, indicating robustness against weak instrument bias. IVW analysis revealed associations between six plasma liposome components and MM risk (p < 0.05). Phosphatidylinositol (16:0_18:1) serum levels (odds ratio [OR] = 1.769, 95% confidence interval [CI]: 1.132-2.763, p = 0.012) and triacylglycerol (56:4) levels (p = 0.026, OR = 1.417, 95% CI: 1.042-1.926) were positively correlated with the risk of multiple myeloma development. Phosphatidylethanolamine (18:0_20:4) (p = 0.004, 95% CI: 0.621-0.916, OR = 0.754), phosphatidylcholine (18:2_20:4) (p = 0.004, OR = 0.680, 95% CI: 0.519-0.889), sterol ester (27:1/18:3) levels (p = 0.013, OR = 0.677, 95% CI: 0.498-0.922), and phosphatidylcholine (O-18:2_20:4) levels (OR = 0.710, 95% CI: 0.517-0.913, p = 0.033) were negatively associated with the risk of developing multiple myeloma. The Cochran\'s Q test did not detect statistical method heterogeneity, nor did the MR-RESSO test or the MR-Egger intercept detect horizontal pleiotropy; leave-one-out analyses confirmed the absence of bias from individual SNPs.
    UNASSIGNED: Our findings suggest a complex relationship between plasma liposome components and MM risk. Elevated serum levels of triacylglycerol and phosphatidylinositol are positively associated with MM risk, while certain phospholipids and sterol esters offer a protective effect. This study provides valuable insights into the clinical relevance of liposomes in the pathology of multiple myeloma.
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  • 文章类型: Journal Article
    I型糖尿病(T1DM)是一项重大的健康挑战,尤其是对儿童来说,由于其慢性自身免疫性质。尽管T1DM的确切病因仍然难以捉摸,遗传易感性的相互作用,免疫反应,和环境因素是假定的。遗传因素控制对β细胞的免疫反应性。鉴于CIITA和CLEC2D基因在调节多种免疫病理中的关键作用,我们假设CIITA和CLEC2D基因的遗传变异可能影响T1DM疾病易感性.本研究旨在探讨CIITA(rs8048002)和CLEC2D(rs2114870)基因多态性与1型糖尿病(T1DM)的关系。重点分析这些基因变异的功能后果。
    该研究招募了苏伊士运河大学医院的178名健康对照和148名1型糖尿病(T1DM)患者。使用等位基因识别聚合酶链反应(PCR)对CIITA和CLEC2D进行基因分型。糖化血红蛋白(HbA1c)水平和血脂通过自动分析仪测定,同时使用酶联免疫吸附测定(ELISA)技术测量空腹血糖和胰岛素血清水平。RegulomeDB用于检查CIITA(rs8048002)和CLEC2D(rs2114870)基因变体的调节功能。
    CIITArs8048002多态性的基因型分布分析表明,与对照组相比,T1DM患者中罕见C等位基因的患病率明显更高(OR=1.77;P=0.001)。与对照组相比,CIITArs8048002杂合子TC基因型(OR=1.93;P=0.005)和罕见纯合子CC基因型(OR=3.62;P=0.006)在T1DM儿童中的频率明显更高。相反,发现CLEC2Drs2114870的罕见A等位基因在T1DM儿童中的频率明显低于对照组(OR=0.58;P=0.002).与对照组相比,T1DM患者的杂合子GA基因型(OR=0.61;P=0.033)和稀有纯合子AA基因型(OR=0.25;P=0.004)也明显较低。预测BotthCIITA(rs8048002)和CLEC2D(rs2114870)基因变体具有调节功能,由每个的RegulomeDB得分(1f)表示。
    CIITArs8048002遗传变异的罕见C等位基因与发展为T1DM的风险增加相关,而CLEC2Drs2114870较不常见的A等位基因与T1DM风险降低相关。
    在线版本包含补充材料,可在10.1007/s40200-024-01402-w获得。
    UNASSIGNED: Type I diabetes mellitus (T1DM) is a significant health challenge, especially for children, owing to its chronic autoimmune nature. Although the exact etiology of T1DM remains elusive, the interplay of genetic predisposition, immune responses, and environmental factors are postulated. Genetic factors control immune reactivity against β-cells. Given the pivotal roles of CIITA and CLEC2D genes in modulating a variety of immune pathologies, we hypothesized that genetic variations in CIITA and CLEC2D genes may impact T1DM disease predisposition. This study was designed to explore the association between gene polymorphisms in CIITA (rs8048002) and CLEC2D (rs2114870) and type 1 diabetes (T1DM), with a focus on analyzing the functional consequence of those gene variants.
    UNASSIGNED: The study enlisted 178 healthy controls and 148 individuals with type 1 diabetes (T1DM) from Suez Canal University Hospital. Genotyping for CIITA and CLEC2D was done using allelic-discrimination polymerase chain reaction (PCR). Levels of glycated hemoglobin (HbA1c) and lipid profiles were determined through automated analyzer, while fasting blood glucose and insulin serum levels were measured using the enzyme-linked immunosorbent assay (ELISA) technique. RegulomeDB was used to examine the regulatory functions of CIITA (rs8048002) and CLEC2D (rs2114870) gene variants.
    UNASSIGNED: Analysis of the genotype distribution of the CIITA rs8048002 polymorphism revealed a significantly higher prevalence of the rare C allele in T1DM patients compared to the control group (OR = 1.77; P = 0.001). Both the CIITA rs8048002 heterozygote TC genotype (OR = 1.93; P = 0.005) and the rare homozygote CC genotype (OR = 3.62; P = 0.006) were significantly more frequent in children with T1DM when compared to the control group. Conversely, the rare A allele of CLEC2D rs2114870 was found to be significantly less frequent in T1DM children relative to the control group (OR = 0.58; P = 0.002). The heterozygote GA genotype (OR = 0.61; P = 0.033) and the rare homozygote AA genotype (OR = 0.25; P = 0.004) were also significantly less frequent in T1DM patients compared to the control group. Both CIITA (rs8048002) and CLEC2D (rs2114870) gene variants were predicted to have regulatory functions, indicated by a RegulomeDB score of (1f) for each.
    UNASSIGNED: The rare C allele of CIITA rs8048002 genetic variant was associated with an increased risk of developing T1DM, while the less common A allele of CLEC2D rs2114870 was associated with a reduced risk of T1DM.
    UNASSIGNED: The online version contains supplementary material available at 10.1007/s40200-024-01402-w.
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  • 文章类型: Journal Article
    背景:报告表明,脂质分布可能与发生皮肤癌的可能性有关,然而确切的因果关系仍然未知。
    目的:本研究旨在研究脂质组与皮肤癌之间的联系,以及调查任何可能的调解员。
    方法:根据全基因组关联研究(GWAS),对179个脂质粒和每种皮肤癌进行了双样本孟德尔随机化(MR)分析,包括黑色素瘤,基底细胞癌(BCC),鳞状细胞癌(SCC)。然后,进行贝叶斯加权MR以验证双样本MR的分析结果。此外,我们采用两步MR研究了TNF样弱凋亡诱导因子(TWEAK)介导的脂质对皮肤癌发病率的影响.
    结果:MR分析确定遗传预测较高的磷脂酰胆碱(PC)(17:0_18:2)可以降低皮肤肿瘤的风险,包括BCC(OR=0.9149,95%CI:0.8667-0.9658),SCC(OR=0.9343,95%CI:0.9087-0.9606)和黑色素瘤(OR=0.9982,95%CI:0.9966-0.9997)。通过TWEAK介导的遗传预测预测的PC(17:0_18:2)的比例在BCC中为6.6%,在SCC中为7.6%。PC(17:0_18:2)与黑色素瘤之间的因果关系不是由TWEAK介导的。
    结论:这项研究确定了PC(17:0_18:2)和角质形成细胞癌之间的负因果关系,其中一小部分是由TWEAK介导的,其余大多数中介因素仍不清楚。未来还需要进一步研究其他风险因素。
    BACKGROUND: Reports suggest that lipid profiles may be linked to the likelihood of developing skin cancer, yet the exact causal relationship is still unknown.
    OBJECTIVE: This study aimed to examine the connection between lipidome and skin cancers, as well as investigate any possible mediators.
    METHODS: A two-sample Mendelian randomization (MR) analysis was conducted on 179 lipidomes and each skin cancer based on a genome-wide association study (GWAS), including melanoma, basal cell carcinoma (BCC), and squamous cell carcinoma (SCC). Then, Bayesian weighted MR was performed to verify the analysis results of two-sample MR. Moreover, a two-step MR was employed to investigate the impact of TNF-like weak inducer of apoptosis (TWEAK)-mediated lipidome on skin cancer rates.
    RESULTS: MR analysis identified higher genetically predicted phosphatidylcholine (PC) (17:0_18:2) could reduce the risk of skin tumors, including BCC (OR = 0.9149, 95% CI: 0.8667-0.9658), SCC (OR = 0.9343, 95% CI: 0.9087-0.9606) and melanoma (OR = 0.9982, 95% CI: 0.9966-0.9997). The proportion of PC (17:0_18:2) predicted by TWEAK-mediated genetic prediction was 6.6 % in BCC and 7.6% in SCC. The causal relationship between PC (17:0_18:2) and melanoma was not mediated by TWEAK.
    CONCLUSIONS: This study identified a negative causal relationship between PC (17:0_18:2) and keratinocyte carcinomas, a small part of which was mediated by TWEAK, and most of the remaining mediating factors are still unclear. Further research on other risk factors is needed in the future.
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  • 文章类型: Journal Article
    肺癌预后不良,总生存率低,由早期诊断困难和对治疗的抵抗引起的。近年来,已经有新的疗法,使用特定的分子靶标,并有效地增加晚期癌症的生存机会。因此,有必要找到更具体的生物标志物,以识别癌变的早期变化,并允许尽早治疗。维生素D(VD)在免疫和致癌作用中起重要作用。此外,维生素D受体(VDR)调节与人体生理功能有关的各种基因的表达。编码VDR的基因是极其多态的,并且在人群之间差异很大。迄今为止,VDR多态性与几种癌症之间存在显著关联,但是关于VDR多态性与肺癌的关系的数据仍然相互矛盾。因此,在这次审查中,我们的目的是研究人类VDR单核苷酸多态性与肺癌发病风险之间的关系.研究表明,不同的基因多态性与肺癌风险增加有关:TaqI,ApaI,Bsmi,FokI,Cdx2此外,VD缺乏与肺癌的发生发展有很强的正相关性。尽管如此,由于缺乏意识,VD状态和VDR多态性的评估很少被考虑用于预测肺癌的演变及其临床适用性,尽管研究表明TaqI基因多态性导致肺癌的风险最高,并且VDR多态性与更具侵袭性的癌症进化相关。
    Lung cancer has an unfavorable prognosis with a rate of low overall survival, caused by the difficulty of diagnosis in the early stages and resistance to therapy. In recent years, there have been new therapies that use specific molecular targets and are effective in increasing the survival chances of advanced cancer. Therefore, it is necessary to find more specific biomarkers that can identify early changes in carcinogenesis and allow the earliest possible treatment. Vitamin D (VD) plays an important role in immunity and carcinogenesis. Furthermore, the vitamin D receptor (VDR) regulates the expression of various genes involved in the physiological functions of the human organism. The genes encoding the VDR are extremely polymorphic and vary greatly between human populations. To date, there are significant associations between VDR polymorphism and several types of cancer, but the data on the involvement of VDR polymorphism in lung cancer are still conflicting. Therefore, in this review, our aim was to investigate the relationship between VDR single-nucleotide polymorphisms in humans and the degree of risk for developing lung cancer. The studies showcased different gene polymorphisms to be associated with an increased risk of lung cancer: TaqI, ApaI, BsmI, FokI, and Cdx2. In addition, there is a strong positive correlation between VD deficiency and lung cancer development. Still, due to a lack of awareness, the assessment of VD status and VDR polymorphism is rarely considered for the prediction of lung cancer evolution and their clinical applicability, despite the fact that studies have shown the highest risk for lung cancer given by TaqI gene polymorphisms and that VDR polymorphisms are associated with more aggressive cancer evolution.
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  • 文章类型: Journal Article
    在世界范围内,对经济上重要的Phalarisarundinacea(禾本科)的分子研究主要集中在该物种从欧洲到北美的入侵上。直到目前的研究,尚未在波罗的海国家/地区研究过P.arundinacea的遗传多样性。这项研究的目的是评估波罗的海国家人口之间简单序列重复(SSR)基因座的立陶宛人口的多样性,卢森堡,和俄罗斯远东地区(欧亚地区),评估立陶宛种群和观赏植物之间的差异,并将这些与环境特征联系起来。对于六个选定的立陶宛河流域人口,使用GBS低密度SNP来确定遗传多样性。贝叶斯分析表明,欧亚高丽星种群由两个基因簇组成。记录了欧洲和欧亚种群之间具有统计学意义的遗传差异。沿河自然生长的立陶宛基因型在遗传上与栽培的观赏植物不同。GBS-SNP将选定的六个Nemunas流域分为三个不同的组,其中一组,两个,或三条河流在不同的群体遗传多样性。遗传多样性主要是在,而不是中间,立陶宛语,东欧,以及整个大陆上的亚欧大陆人口。因此,恢复工作将受益于当地人口种子的起源。
    Worldwide molecular research of economically important Phalaris arundinacea (Poaceae) is mainly focused on the invasions of this species from Europe to North America. Until the present study, the genetic diversity of the P. arundinacea had not been studied across the Baltic countries. The objective of this research is to evaluate the diversity of Lithuanian populations of P. arundinacea at simple sequence repeat (SSR) loci comparatively among populations of the Baltic countries, Luxembourg, and the Russian Far East (Eurasian), evaluating differentiation between Lithuanian populations and ornamental accessions, and relating these with environmental features. For six selected Lithuanian river basin populations, GBS low density SNPs were used to determine genetic diversity. Bayesian analysis showed that Eurasian populations of Phalaris arundinacea consist of two gene clusters. Statistically significant genetic differentiation among European and Eurasian populations was documented. Lithuanian genotypes growing naturally along rivers are genetically distinct from cultivated ornamentals. GBS-SNPs divided the six selected Nemunas river basins into three distinct groups with one, two, or three rivers in separate groupings for genetic diversity. Genetic diversity is primarily within, rather than among, Lithuanian, eastern European, and Eurasian populations of P. arundinacea across the continent. Thus, restoration efforts would benefit from local population seed origination.
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  • 文章类型: Journal Article
    辣椒农艺性状是表征种质属性和相关性的关键指标。重要的是通过目标性状的表型差异来研究差异基因型变异。全基因组重测序用于对具有已知参考基因组和注释的不同物种个体之间的全基因组进行测序。基于此,进行了个体或种群差异分析,以鉴定与辣椒相关的农艺性状的SNP。这项研究进行了一项全基因组关联研究,其中包括182个向上生长的C.frutescens和C.annuum的26个关键农艺性状。种群结构(系统发育学,人口结构,人口主成分分析,遗传关系)和连锁不平衡分析,以确保GWAS结果的准确性和可靠性,并确定了最优统计模型。共有929个SNP与26个农艺性状显著相关,被确认,同时在与这些SNP相邻的100kb区域内检测519个候选基因。此外,通过基因注释和表达模式审查,通过qRT-PCR验证了与辣椒和辣椒果实性状相关的GAUT1,COP10和DDB1基因。在CH20(辣椒)和YB-4(辣椒)品种中,克隆了GAUT1和COP10,cDNA长度分别为1065bp和561bp,分别,仅表现出少量的单核苷酸变异和核苷酸缺失。该验证为辣椒农艺性状的分子标记辅助育种提供了可靠的参考,为未来辣椒分子标记辅助育种工作提供遗传资源和理论基础。
    Pepper agronomic traits serve as pivotal indicators for characterizing germplasm attributes and correlations. It is important to study differential genotypic variation through phenotypic differences of target traits. Whole genome resequencing was used to sequence the whole genome among different individuals of species with known reference genomes and annotations, and based on this, differential analyses of individuals or populations were carried out to identify SNPs for agronomic traits related to pepper. This study conducted a genome-wide association study encompassing 26 key agronomic traits in 182 upward-growing fruits of C. frutescens and C. annuum. The population structure (phylogenetics, population structure, population principal component analysis, genetic relationship) and linkage disequilibrium analysis were realized to ensure the accuracy and reliability of GWAS results, and the optimal statistical model was determined. A total of 929 SNPs significantly associated with 26 agronomic traits, were identified, alongside the detection of 519 candidate genes within 100 kb region adjacent to these SNPs. Additionally, through gene annotation and expression pattern scrutiny, genes such as GAUT1, COP10, and DDB1 correlated with fruit traits in Capsicum frutescens and Capsicum annuum were validated via qRT-PCR. In the CH20 (Capsicum annuum) and YB-4 (Capsicum frutescens) cultivars, GAUT1 and COP10 were cloned with cDNA lengths of 1065 bp and 561 bp, respectively, exhibiting only a small number of single nucleotide variations and nucleotide deletions. This validation provides a robust reference for molecular marker-assisted breeding of pepper agronomic traits, offering both genetic resources and theoretical foundations for future endeavors in molecular marker-assisted breeding for pepper.
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  • 文章类型: Journal Article
    通过孟德尔随机化(MR)分析研究肠道微生物群(GM)与库拉齐隆之间的因果关系。
    GM相关的全基因组关联研究(GWAS)来自国际MiBioGen联盟。库拉兹病的遗传数据来自MRC综合流行病学单位(IEU)OpenGWAS数据库。五种MR方法,包括逆方差加权(IVW),被用来估计因果关系。Cochran的Q检验用于检测异质性,利用MR-Egger截距检验和MR-PRESSO回归检测水平多效性,并采用留一法验证数据的稳定性。
    我们将119个属的1,509个单核苷酸多态性(SNP)鉴定为工具变量(IV)(p<1×10-5)。根据逆方差加权(IVW)估计,FamilyXIIIAD3011组(OR=1.0018,95%CI1.0002-1.0035,p=0.030)和副杆菌属(OR=1.0013,95%CI1.0002-1.0025,p=0.022)可能与妊娠的风险增加相关.相反,Veillonella(OR=0.9986,95%CI0.9974-0.9999,p=0.036)似乎提供了针对斑疹的保护。没有证据表明异质性或多效性。
    本研究揭示了GM与斑节鱼之间的因果关系,将子杆菌和家族XIIIAD3011组确定为潜在的风险贡献者,同时强调Veillonella是一种保护因素。深入研究特定细菌的潜在机制对于将来提供新的治疗和预防策略至关重要。
    UNASSIGNED: To investigate the causal relationship between gut microbiota (GM) and chalazion through Mendelian randomization (MR) analysis.
    UNASSIGNED: GM-related genome-wide association studies (GWAS) were obtained from the International Consortium MiBioGen. Genetic data for chalazion were sourced from the MRC Integrative Epidemiology Unit (IEU) Open GWAS database. Five MR methods, including inverse variance weighted (IVW), were employed to estimate causal relationships. Cochran\'s Q test was used to detect heterogeneity, the MR-Egger intercept test and MR-PRESSO regression were utilized to detect horizontal pleiotropy, and the leave-one-out method was employed to validate data stability.
    UNASSIGNED: We identified 1,509 single nucleotide polymorphisms (SNPs) across 119 genera as instrumental variables (IVs) (p < 1 × 10-5). According to the inverse variance weighted (IVW) estimate, the Family XIII AD3011 group (OR = 1.0018, 95% CI 1.0002-1.0035, p = 0.030) and Catenibacterium (OR = 1.0013, 95% CI 1.0002-1.0025, p = 0.022) were potentially associated with increased risk of chalazion. Conversely, Veillonella (OR = 0.9986, 95% CI 0.9974-0.9999, p = 0.036) appeared to provide protection against chalazion. There was no evidence of heterogeneity or pleiotropy.
    UNASSIGNED: This study uncovered the causal relationship between GM and chalazion, pinpointing Catenibacterium and Family XIII AD3011 group as potential risk contributors, while highlighting Veillonella as a protective factor. In-depth investigation into the potential mechanisms of specific bacteria in chalazion was essential for providing novel therapeutic and preventive strategies in the future.
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