磷酸酶互作蛋白2(Phosphatase-interacting protein 2,PSTPIP2)和溶质载体家族6成员18(Solute carrier family 6 member 18,SLC6A18)基因在动物先天性自身免疫中发挥着重要的作用。为探讨PSTPIP2基因g.43165308C>T位点和SLC6A18基因g...磷酸酶互作蛋白2(Phosphatase-interacting protein 2,PSTPIP2)和溶质载体家族6成员18(Solute carrier family 6 member 18,SLC6A18)基因在动物先天性自身免疫中发挥着重要的作用。为探讨PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点多态性与牦牛免疫性状的关联性,本研究对189头娘亚牦牛的PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点进行了PCR扩增,并利用PARMS SNP分型,采用IBM SPSS Statistics 26.0软件分析了不同基因位点与牦牛免疫球蛋白、炎症标志物及细胞因子等免疫性状的关联性。结果表明,PSTPIP2基因g.43165308C>T位点存在CC、CT和TT三种基因型,优势等位基因和基因型分别是C和CC,其频率分别为0.720和0.534。PSTPIP2基因g.43165308C>T位点属于中度多态位点,且处于Hardy-Weinberg平衡状态(P>0.05)。SLC6A18基因g.8294767T>C位点存在CC、TC和TT三种基因型,优势等位基因和基因型分别是T和TT,其频率分别为0.796和0.660。SLC6A18基因g.8294767T>C位点属于中度多态位点,且处于Hardy-Weinberg不平衡状态(P<0.05)。关联分析结果表明,PSTPIP2基因g.43165308C>T位点与牦牛免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、C反应蛋白(CRP)、白介素-2(IL-2)、白介素-4(IL-4)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)均呈显著相关(P<0.05);SLC6A18基因g.8294767T>C位点与C反应蛋白(CRP)、白介素-4(IL-4)、干扰素-γ(IFN-γ)均呈显著相关(P<0.05)。综上所述,PSTPIP2和SLC6A18基因的多态性与牦牛免疫性状显著相关,这两个基因可能是影响牦牛免疫性状的潜在候选基因。展开更多
To explore the formation mechanism of anisotropy in Ti-6Al-4V alloy fabricated by selective laser melting(SLM),the compressive mechanical properties,microhardness,microstructure,and crystallographic orientation of the...To explore the formation mechanism of anisotropy in Ti-6Al-4V alloy fabricated by selective laser melting(SLM),the compressive mechanical properties,microhardness,microstructure,and crystallographic orientation of the alloy across different planes were investigated.The anisotropy of SLM-fabricated Ti-6Al-4V alloys was analyzed,and the electron backscatter diffraction technique was used to investigate the influence of different grain types and orientations on the stress-strain distribution at various scales.Results reveal that in room-temperature compression tests at a strain rate of 10^(-3) s^(-1),both the compressive yield strength and microhardness vary along the deposition direction,indicating a certain degree of mechanical property anisotropy.The alloy exhibits a columnar microstructure;along the deposition direction,the grains appear equiaxed,and they have internal hexagonal close-packed(hcp)α/α'martensitic structure.α'phase has a preferential orientation approximately along the<0001>direction.Anisotropy arises from the high aspect ratio of columnar grains,along with the weak texture of the microstructure and low symmetry of the hcp crystal structure.展开更多
文摘磷酸酶互作蛋白2(Phosphatase-interacting protein 2,PSTPIP2)和溶质载体家族6成员18(Solute carrier family 6 member 18,SLC6A18)基因在动物先天性自身免疫中发挥着重要的作用。为探讨PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点多态性与牦牛免疫性状的关联性,本研究对189头娘亚牦牛的PSTPIP2基因g.43165308C>T位点和SLC6A18基因g.8294767T>C位点进行了PCR扩增,并利用PARMS SNP分型,采用IBM SPSS Statistics 26.0软件分析了不同基因位点与牦牛免疫球蛋白、炎症标志物及细胞因子等免疫性状的关联性。结果表明,PSTPIP2基因g.43165308C>T位点存在CC、CT和TT三种基因型,优势等位基因和基因型分别是C和CC,其频率分别为0.720和0.534。PSTPIP2基因g.43165308C>T位点属于中度多态位点,且处于Hardy-Weinberg平衡状态(P>0.05)。SLC6A18基因g.8294767T>C位点存在CC、TC和TT三种基因型,优势等位基因和基因型分别是T和TT,其频率分别为0.796和0.660。SLC6A18基因g.8294767T>C位点属于中度多态位点,且处于Hardy-Weinberg不平衡状态(P<0.05)。关联分析结果表明,PSTPIP2基因g.43165308C>T位点与牦牛免疫球蛋白A(IgA)、免疫球蛋白M(IgM)、C反应蛋白(CRP)、白介素-2(IL-2)、白介素-4(IL-4)、白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)均呈显著相关(P<0.05);SLC6A18基因g.8294767T>C位点与C反应蛋白(CRP)、白介素-4(IL-4)、干扰素-γ(IFN-γ)均呈显著相关(P<0.05)。综上所述,PSTPIP2和SLC6A18基因的多态性与牦牛免疫性状显著相关,这两个基因可能是影响牦牛免疫性状的潜在候选基因。
基金National Natural Science Foundation of China(51504138,51674118,52271177)Hunan Provincial Natural Science Foundation of China(2023JJ50181)Supported by State Key Laboratory of Materials Processing and Die&Mould Technology,Huazhong University of Science and Technology(P2024-022)。
文摘To explore the formation mechanism of anisotropy in Ti-6Al-4V alloy fabricated by selective laser melting(SLM),the compressive mechanical properties,microhardness,microstructure,and crystallographic orientation of the alloy across different planes were investigated.The anisotropy of SLM-fabricated Ti-6Al-4V alloys was analyzed,and the electron backscatter diffraction technique was used to investigate the influence of different grain types and orientations on the stress-strain distribution at various scales.Results reveal that in room-temperature compression tests at a strain rate of 10^(-3) s^(-1),both the compressive yield strength and microhardness vary along the deposition direction,indicating a certain degree of mechanical property anisotropy.The alloy exhibits a columnar microstructure;along the deposition direction,the grains appear equiaxed,and they have internal hexagonal close-packed(hcp)α/α'martensitic structure.α'phase has a preferential orientation approximately along the<0001>direction.Anisotropy arises from the high aspect ratio of columnar grains,along with the weak texture of the microstructure and low symmetry of the hcp crystal structure.
