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Objective To study the diagnosis value of giant cell temporal arteritis with high frequency ultrasonography and magnetic resonance imaging.Methods The total of 29 cases testified as giant cell temporal arteritis clinically were assessed by high frequency ultrasonography and magnetic resonance imaging.The 29 cases were assessed by high frequency ultrasonography,the 11 cases were assessed by magnetic resonance imaging,mural thickness and lumen diameter of temporal arteries were examined,and were compared with the biopsy specimens.Meanwhile 30 healthy volunteers were randomly selected as control group,the ultrasonography of normal temporal arteries were analyzed.Results All temporal arteries were diaplayed clearly.27 cases were diagnosed for giant cell temopral arteritis by high frequency ultrasonography in 29 cases,the diagnostic accuracy was 93.1％.The 11 cases were diagnosed by magnetic resonance imaging,the diagnostic accuracy was 100％.The imaging features were mural thickness,the lumen stenosis,and partial temporal arteries occluded,the mural was contrasted by Gd-DTPA.Conclusions High frequency ultrasonography and magnetic resonance imaging are noninvasive methods for giant cell temporal arteritis diagnosis,it is important clinical value for therapy.
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Objective To study the correlation between single nucleotide polymorphism (SNP) of downstream mononucleotide in signal transduction of Toll-like receptors and predisposing genes of rheumatoid arthritis (RA).Methods One hundred and sixty-two RA patients were selected from northern part of Han people in China,and 188 healthy subjects were enrolled as normal controls.Rs7744 of Myd88,rs5030445 of TRAF6,rs11265618 and rs4845626 of IL-6R were analyzed.The data of genotypic frequency and allele genotypic frequency were statistical analyzed by x2 test between the two groups.Results The difference of allele frequency of TRAF6 rs5030445 between the two groups were remarkable (x2=5.716,P＜0.05),and so did the IL-6R rs11265618 (x2=5.704,P＜0.05).But the difference of genotypic frequency was not statistically significant for locus of Myd88 rs7744,TRAF6 rs5030445 and IL-6R rs11265618 (P＞0.05).And the differenceof allele frequency and genotypic frequency between the two groups had no statistical significance in locus of Myd88 rs7744 and IL-6R rs4845626 (P＞0.05).Conclusion There is significant correlation between single nucleotide polymorphism and predisposing genes of RA.The G allele of TRAF6 rs5030445 gene locus is a possible predisposing gene for RA.The T allele of IL-6R rs11265618 is a possible predisposing gene of RA.
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Objective To systematically analyze and evaluate the association between the peptidylarginine deiminaseⅣ(PADI4) gene and rheumatoid arthritis (RA) based on the published data,and to provide evidence for the pathogenesis of RA.Methods By selecting five SNPs in PADI4 (rs11203366,rs11203367,rs874881,rs2240340,rs1748033) which had been extensively examined.Meta-analysis on each SNP was performed step by step according to Hugenet manual to investigate the association of the polymorphisms of the PADI4 gene with RA.Results This Meta-analysis enrolled 15 659 RA patients and 22 019 healthy controls from 21 studies worldwide.It demonstrated that rs11203366,rs11203367,rs2240340 and rs 1748033 confered susceptibility to RA in Asian ethnicity (P＜0.01,0.03,＜0.01,＜0.01),while rsl1203366,rsl1203367 and rs874881 confered susceptibility to RA in Caucasian of European ancestry (P=0.0002,0.004,0.03).It also shown that no significant association between rs874881 and RA in the Asian ethnicity populations (P=0.2),or rs2240340,rs1748033 and RA in Caucasian of European ancestry (P=0.18,0.1 ).A linkage disequilibrium study was also performed.The LD study showed that rs11203366,rs11203367,rs874881,rs2240340 and rs1748033 were in linkage disequilibrium both in the Asian ethnicity and Caucasian,which was basically inconsistent with the results of Meta-analysis.The conflicting results should be explained by many aspects such as bias in sample selection,genotyping,and the stratification.Conclusion The PADI4 genotype is partially associated with RA,and the underling mechanisms need further study.Haplotype based research and Metaanalysis would be valuable.
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Objective To investigate the association between rheumatoid arthritis (RA) and the presence of the shared epitope (SE) of HLA DRB1 gene in Han nationality of Shandong population.Methods The method of DNA amplification with sequence specific primers (PCR SSP) was used to determine 17 alleles of HLA DRB101,04,10 genotypes in 132 RA patients and 130 healthy controls from the Han nationality population in Shandong.Results The frequencies of SE were significantly increased in RA patients compared with controls (50 0% vs 22 3%, P
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Objective To explore the association between rheumatoid arthritis (RA) with HLA-DRB1 in China. Method The reported articles about HLA-DRB1 RA in China were searched and Meta-analysis was performed. Result Fourteen studies enroll 1118 RA patients and 1301 controls, the associated gene was HLA-DR4 (OR=4.05, P
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Objective To explore the association between rheumatoid arthritis (RA) with TLR4 Asp299Gly functional variant. Method The literature about RA and TLR4 Asp299Gly functional variant were searched and the meta-analysis was performed. Results Three studies enrolled 718 RA patients and 1392 controls in total. The analysis showed that the TLR4 Asp299Gly functional variant was neither associated with the susceptibility of RA [OR=1.23 (0.67, 2.25), P=0.5]; nor associated with SE or RF [OR=0.67 and 1.02 respectively]; while the TLR4 Asp299Gly functional variant was associated with the age of onset [OR=-4.35 (-7.45, -1.25), P=0.006]. Conclusion The meta-analysis reveals that the TLR4 Asp299Gly functional variant is not associated with the susceptibility of RA, but the onset of RA is earlier in the AA type than those in the AG type. Further prospective corhort studies should be carreied out in the future, especially in oriential people.
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Objective To explore the role of toll like receptors-2 and toll like receptors-4 in the pathogenesis of rheumatoid arthritis(RA). Methods The expression rate and intensity of TLR2 and TLR4 on the CD14 positive monocytes in peripheral blood (PBMC) of 32 RA patients were determined by multi-colore immunofluorescence flow cytometry. Results ①The expression rate and intensity of TLR2 and TLR4 on the CD14 positive monocytes in peripheral blood of RA patients were higher than that of normal control. ② There was no difference in the expression pattern between the early stage RA group and the late stage RA group. ③The intensity of TLR2, but not TLR4 was correlated with serum CRP level. Conclusion The results indicate that innate immunomolecules such as TLR2 and TLR4 may be involved both in the initiation stage and perpetuating stage of RA.
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Objective To explore the association between sysetemic lupus erythematosus (SLE) with HLA-DQA1 in the mainland of China. Method The reported articles about SLE in mainland of China and HLA-DQA1 were searched and the meta-analysis via Rev man4.1 was performed. Result Seven studies enrolled 447 SLE patients and 503 controls, HLA-DOA1*0301 might be of protective value, P=0.000 07, OR=0.64 (0.52, 0.80). Conclusion Meta-analysis is an importmant method to determine the controversial results of the gene association studies performed in the mainland of China with small sample size.