Association between ADAM12 polymorphism and knee osteoarthritis in Thai population

The association between ADAM12 gene polymorphisms and osteoarthritis: an updated meta-analysis

BACKGROUND

Osteoarthritis of the knee is an irreversible disease that causes great pain, and genetic factors play an important role in its occurrence and development. There have been many studies on the correlation between ADAM12 polymorphisms and genetic susceptibility to osteoarthritis, but the results remain inconclusive.

METHODS

Papers from PubMed, Web of Science, EMbase, Springer, SCOPUS, Google Scholar and other databases were systematically retrieved with a cut-off of January 2022. All case-control studies on ADAM12 rs3740199, rs1871054, rs1044122, and rs1278279 polymorphisms and osteoarthritis were searched. Fixed or random effects models were used for pooled analysis with OR values and 95% confidence intervals (CI), and publication bias was assessed. In addition, the false-positive reporting probability test was used to assess the confidence of a statistically significant association.

RESULTS

Eleven articles were included, which included 3332 patients with osteoarthritis and 5108 healthy controls. Meta-analysis showed that the rs1871054 polymorphism of ADAM12 was associated with osteoarthritis in dominant, recessive, allelic, and homozygote genetic models [C vs. T: OR = 1.34 95% CI (1.05, 1.71), P < 0.001]. Our subgroup analysis revealed an association between the ADAM12 polymorphism rs1871054 in Asians and osteoarthritis [C vs. T: OR = 1.61, 95% CI (1.25, 2.08), P < 0.001], albeit this was only for three studies. In addition, the ADAM12 polymorphism rs1871054 is associated with osteoarthritis in patients younger than 60 years of age [C vs. T: OR = 1.39, 95% CI (1.01, 1.92), P = 0.289]; however, the ADAM12 gene rs3740199, rs1044122, and rs1278279 site polymorphisms were not significantly. Furthermore, when assessing the confidence of the positive results, the positive results were found to be credible (except for Age < 60).

CONCLUSION

Polymorphism at the rs1871054 site of ADAM12 is associated with genetic susceptibility to osteoarthritis, but rs3740199, rs1044122, and rs1278279 site polymorphisms are not.

Association between Common Variants in VEGFA Gene and the Susceptibility of Primary Knee Osteoarthritis

OBJECTIVES

This study aimed to analyze the relationship between vascular endothelial growth factor A (VEGFA) gene polymorphisms, plasma VEGFA, and the susceptibility of knee osteoarthritis (OA).

DESIGN

A total of 404 subjects, 202 knee OA subjects and 202 healthy volunteers, were enrolled into the study. Four distinct polymorphisms of the VEGFA gene were evaluated using polymerase chain reaction-restriction fragment length polymorphism: -2578C/A (rs699947), -1154G/A (rs1570360), -634C/G (rs2010963), and +936C/T (rs3025039). Plasma VEGFA levels were analyzed using enzyme-linked immunosorbent assay.

RESULTS

The most common nucleotides in both knee OA subjects and healthy controls were CC for -2578C/A, GG for -1154G/A, CG for -634C/G, and CC for +936C/T in the VEGFA gene. Genotype distribution and allele frequencies of VEGFA -2578C/A, -1154G/A, -634C/G, and +936C/T single nucleotide polymorphisms did not differ between OA patients and the controls. Plasma VEGFA levels showed no difference between OA patients and the controls. In contrast, plasma VEGFA levels of -634C/C genotype were significantly higher in OA patients than in the controls (P = 0.035). According to the -2578A/A genotype, patients with early stage OA had a higher odds ratio than those with advanced stage OA (P = 0.023).

CONCLUSIONS

VEGFA -2578C/A (rs699947), -1154G/A (rs1570360), -634C/G (rs2010963), and +936C/T (rs3025039) polymorphisms may not be responsible for OA susceptibility in the Thai population. However, the OA patients with A/A genotype at the -2578C/A seemed to have a lower potential risk of developing severe OA than those with the C/A and C/C genotypes. These findings would help elucidate and facilitate a better understanding of the genetic fundamentals of OA.

Tetra-primers ARMS-PCR Based Association Analyses of Synonymous and Intronic Variants in the ADAM12 Gene with Susceptibility to Knee Osteoarthritis: A Case-Control Study

Genetic variations in a disintegrin and metalloprotease 12 (ADAM12) gene may contribute to develop Osteoarthritis (OA) that is characterized by cartilage matrix degradation and osteophytes formation. Therefore, the aim of present study was to analyze the association between the ADAM12 gene variants and knee OA predisposition. Tetra-primers ARMS-PCR was employed, to genotype the ADAM12 gene polymorphisms (rs1044122 and rs1871054) in 400 knee OA patients and equal number of age-matched controls. The association between ADAM12 gene variants and OA susceptibility was estimated using the Chi-square, logistic regression, haplotypes and linkage analyses. A significant association of rs1044122 (genotype: χ² = 18.94; P < 0.001, allele: χ² = 19.10; P < 0.001) and rs1871054 (genotype: χ² = 10.04; P = 0.007, allele: χ² = 10.57; P = 0.001) was observed with increased OA susceptibility. The variant genotype of rs1044122 increased OA risk more than twice [odds ratio (OR) 2.20; P = 0.001] and the risk was higher in females (OR 2.43; P = 0.001). The variant genotype of rs1871054 was perceived to almost double the risk in females (OR 1.97; P = 0.003). Moreover, a significant association of rs1044122 and rs1871054 under the additive genetic model (P < 0.001 and P = 0.002, respectively) was observed. The targeted ADAM12 gene polymorphisms, showed significant association with knee OA susceptibility. Females harboring the polymorphisms might be at risk. Besides, the haplotype CC of rs1044122 and rs1871054 in the ADAM12 gene may double knee OA risk. These findings may help in determining the etiology of OA and recognizing the people at risk of developing knee OA.

An insight into osteoarthritis susceptibility: Integration of immunological and genetic background

Osteoarthritis (OA) is a progressive degenerative disease that affects all synovial joints, causing the disability of the main locomotor diarthrodial joints. OA pathogenesis is caused by a complex interplay between a number of genetic and environmental risk factors, involved in the early onset and progression of this chronic inflammatory joint disease. Uncovering the underlying immunological and genetic mechanisms will enable an insight into OA pathophysiology and lead to novel and integrative approaches in the treatment of OA patients, together with a reduction of the disease risk, or a delay of its onset in susceptible patients.

Transcriptome sequencing reveals dynamic changes in matrix metalloproteinases in facet joint osteoarthritis

Osteoarthritis is a general joint disease characterized by articular cartilage degeneration. The extracellular matrix is a principal component in articular cartilage. The dynamic remodeling of the extracellular matrix is involved in the pathological degradation of the articular cartilage. Facet joint osteoarthritis (FJOA) is a common form of osteoarthritis that occurs in the posterior aspect of the vertebral column. However, to the best of our knowledge, the current understanding of the genetic changes in FJOA is limited. The most significantly differentially expressed genes and Gene Ontology categories in FJOA were identified by transcriptome sequencing analysis. The extracellular matrix, matrix metalloproteinases (MMPs) and proteinases of the extracellular matrix were highly involved in FJOA. The canonical signaling pathway ‘inhibition of matrix metalloproteinases’ was further studied in detail by identifying and validating differentially expressed genes in the signaling pathway. Taken together, the present study revealed changes in MMP-related genes in FJOA and showed the importance of extracellular matrix remodeling in FJOA from a genetic aspect.

Whole-transcriptome sequencing of knee joint cartilage from osteoarthritis patients

Objectives

The aim of this study was to provide a comprehensive understanding of alterations in messenger RNAs (mRNAs), long noncoding RNAs (lncRNAs), and circular RNAs (circRNAs) in cartilage affected by osteoarthritis (OA).

Methods

The expression profiles of mRNAs, lncRNAs, and circRNAs in OA cartilage were assessed using whole-transcriptome sequencing. Bioinformatics analyses included prediction and reannotation of novel lncRNAs and circRNAs, their classification, and their placement into subgroups. Gene ontology and pathway analysis were performed to identify differentially expressed genes (DEGs), differentially expressed lncRNAs (DELs), and differentially expressed circRNAs (DECs). We focused on the overlap of DEGs and targets of DELs previously identified in seven high-throughput studies. The top ten DELs were verified by quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) in articular chondrocytes, both in vitro and in vivo.

Results

In total, 739 mRNAs, 1152 lncRNAs, and 42 circRNAs were found to be differentially expressed in OA cartilage tissue. Among these, we identified 18 overlapping DEGs and targets of DELs, and the top ten DELs were screened by expression profile analysis as candidate OA-related genes. WISP2, ATF3, and CHI3L1 were significantly increased in both normal versus OA tissues and normal versus interleukin (IL)-1β-induced OA-like cell models, while ADAM12, PRELP, and ASPN were shown to be significantly decreased. Among the identified DELs, we observed higher expression of ENST00000453554 and MSTRG.99593.3, and lower expression of MSTRG.44186.2 and NONHSAT186094.1 in normal versus OA cells and tissues.

Conclusion

This study revealed expression patterns of coding and noncoding RNAs in OA cartilage, which added sets of genes and noncoding RNAs to the list of candidate diagnostic biomarkers and therapeutic agents for OA patients.

Cite this article: H. Li, H. H. Yang, Z. G. Sun, H. B. Tang, J. K. Min. Whole-transcriptome sequencing of knee joint cartilage from osteoarthritis patients. Bone Joint Res 2019;8:290–303. DOI: 10.1302/2046-3758.87.BJR-2018-0297.R1.

The polymorphism of SMAD3 rs1065080 is associated with increased risk for knee osteoarthritis

The mechanism of knee osteoarthritis (OA) is still not clearly elucidated. SMAD3 gene polymorphisms are considered to play a vital role in OA pathogenesis. We thus investigated the relationship of SMAD3 rs1065080 gene polymorphism and susceptibility to knee osteoarthritis in a Chinese Han population. A total of 237 patients and 142 healthy control participants were enrolled in a case-control study. DNA was extracted from peripheral blood samples and genotyped by using the Mass-ARRAY method. Our results revealed that there was a significant difference between patients and healthy controls in the genotype of A and G (p = 0.019); those with a GG genotype had a significant increase in OA risk (OR 2.881, 95% CI 1.993-7.353, p = 0.025). In addition, logistic regression analysis showed that the recessive genetic model decreased OA morbidity (OR 0.648, 95% CI 0.416-0.911, p = 0.046). In conclusion, the GG genotype of rs1065080 was associated with a higher risk of OA and the recessive genetic model decreased the risk of OA.

Nutritional, metabolic and genetic considerations to optimise regenerative medicine outcome for knee osteoarthritis

Knee osteoarthritis (KOA) is a multifactorial degenerative disorder of joints, affecting the world's population over the age of 65 and with a higher prevalence in females. KOA is responsible for many age associated joint problems such as stiffness and pain. Conventional methods for managing KOA such as nonsteroidal anti-inflammatory drugs (NSAID) may not improve pain or alter the disease progression and may have adverse side effects. Non-pharmacological management of OA is fundamental to management of functional limitations and provides effective symptom relief but has not shown that disease progression can be altered. Regenerative medicine is a relatively new approach which aims to induce cellular regeneration and promote self-healing through minimally invasive methods. The use of regenerative medicine slowed the progression of KOA and revealed significant improvements, yet further investigations are required to optimize the outcomes. Nutritional and metabolic aspects such as supplementations, vitamins and minerals were proven to have an impact on the progression of KOA. Genetic variations are rapidly inspected to identify any potential influence of these variations in the predisposition and diagnosis of KOA. Further supporting evidence suggests the potential influence of metabolic, nutritional and genetic aspects in optimizing the outcomes of regenerative medicine in the management of KOA.

Association of ADAM12 gene polymorphisms with knee osteoarthritis susceptibility

Previous studies that evaluated the association between a disintegrin and metalloprotease 12 (ADAM12) gene polymorphisms and knee osteoarthritis (KOA) have given controversial and indefinite results. Therefore, we performed a meta-analysis to confirm this correlation. We searched the PubMed, Embase, and SinoMed databases for all papers published up to April 11, 2017. Overall, five different studies, totaling 2,353 cases and 3,668 controls, were retrieved on the basis of the search criteria for KOA susceptibility related to four polymorphisms (rs3740199, rs1278279, rs1871054, and rs1044122) in the ADAM12 gene. Odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of this association. Publication bias was assessed using Egger's and Begg's tests. The rs3740199 G/C polymorphism was found to be associated with increased KOA risk in men (e.g., CG versus GG: OR = 1.44, 95% CI = 1.02–2.04, P = 0.040), but not in the overall analysis and in analyses of other subgroups. Significantly increased associations were also found for the rs1871054 polymorphism (e.g., C versus T allele: OR = 1.85, 95% CI = 1.49–2.30, P < 0.001). However, there were no associations for the rs1278279 and rs1044122 polymorphisms. Furthermore, no obvious evidence of publication bias was detected. Our study indicated that the rs1871054 polymorphism of ADAM12 was significantly associated with increased KOA risk.

Association between ADAM12 Single-Nucleotide Polymorphisms and Knee Osteoarthritis: A Meta-Analysis

Objective

ADAM12 polymorphisms may be associated with the risk of knee osteoarthritis (KOA), but currently available evidence remains controversial. We performed this meta-analysis to confirm whether ADAM12 polymorphisms were associated with susceptibility of KOA.

Methods

A comprehensive literature search in PubMed, EMBASE, and ISI Web of Science was conducted to identify observational studies assessing the association between ADAM12 polymorphisms and susceptibility of KOA. The strength of association was indicated as odds ratio (OR) and the corresponding 95% confidence interval (95%CI). Four types of genetic model (additive model, dominant model, recessive model, and allele model) were evaluated for each included study. Subgroup analysis by ethnicity was performed.

Results

Seven case-control studies comprising a total of 3512 KOA patients and 5405 healthy controls were included in the meta-analysis. A significant association between rs1871054 and increased KOA risk was found in each genetic model. No significant association was found between KOA and rs3740199, rs1044122, or rs1278279 in any genetic model.

Conclusion

Based on the findings of our study, there was a modest but statistically significant association between rs1871054 and risk of KOA in Asian population, while other polymorphisms (rs3740199, rs1044122, or rs1278279) in ADAM12 were not associated with KOA in any population.

Association of ADAM 12 polymorphisms with the risk of knee osteoarthritis: meta-analysis of 5048 cases and 6848 controls

Several studies have suggested the association between ADAM 12 polymorphisms and the risk of osteoarthritis (OA), but the results remained controversial. Therefore, we designed a meta-analysis to systematically evaluate the association on this issue. A literature search for eligible studies was conducted in PubMed, Web of Science and Google Scholar databases. The association between ADAM 12 polymorphisms and knee OA risk was calculated by odds ratios (ORs) and 95% confidence intervals (CIs). Study heterogeneity, sensitivity and publication bias analyses were also conducted. Ten articles covering 5048 cases and 6848 controls met our criteria for the final analysis. We found that the rs1871054 was significantly associated with the risk of knee OA (allele model OR 1.72, 95% CI 1.43-2.07, P < 0.001; additive model: OR 2.06, 95% CI 1.19-3.56, P = 0.010; dominant model: OR 2.45, 95% CI 1.85-3.25, P < 0.001; recessive model: OR 1.54, 95% CI 1.13-2.10, P = 0.007). rs1044122 was significantly associated with knee OA susceptibility in recessive model (OR 1.45, 95% CI 1.03-2.04, P = 0.031). For rs3740199 and rs1278279, no significant associations with knee OA were found. In the stratified analysis by gender, significant association was identified with the risk of knee OA for rs3740199 in men in allele model (OR 2.41, 95% CI 1.51-3.84, P < 0.001), dominant model (OR 2.68, 95% CI 1.17-6.14, P = 0.02) and recessive model (OR 3.51, 95% CI 1.68-7.36, P = 0.001), but not for additive model (OR 1.30, 95% CI 0.81-2.08, P = 0.28). This meta-analysis suggests that the ADAM 12 genetic polymorphisms rs1871054 and rs1044122 might be associated with risk of knee OA; rs3740199 might be associated with risk of knee OA in men. Further well-designed and large scale studies are warranted to validate these associations.

ADAMTS and ADAM metalloproteinases in osteoarthritis - looking beyond the 'usual suspects'

INTRODUCTION

Matrix metalloproteinases (MMPs) and 'aggrecanase' a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTSs) are well established to play key roles in osteoarthritis (OA) through degradation of extracellular matrix (ECM) type II collagen and aggrecan, and are thus potential targets for development of OA therapies.

OBJECTIVE

This paper aims to provide a comprehensive review of the expression and potential roles of other, lesser-known ADAMTSs and related adamalysins (or a disintegrin and metalloproteinases (ADAMs)) in cartilage, with a view to identifying potentially protective or homeostatic metalloproteinases in the joint and informing consequent selective inhibitor design.

DESIGN

A comprehensive literature search was performed using PubMed terms 'osteoarthritis' and 'ADAMTS' or 'ADAM'.

RESULTS

Several ADAMTSs and ADAMs were identified as having reportedly increased expression in OA. These include enzymes likely to play roles in cartilage matrix anabolism (e.g., the procollagen N-proteinases ADAMTS-2, ADAMTS-3 and ADAMTS-14), chondrocyte differentiation and proliferation (e.g., ADAM9, ADAM10, ADAM12), as well as enzymes contributing to cartilage catabolism (e.g., Cartilage oligomeric protein (COMP)-degrading ADAMTS-7 and ADAMTS-12).

CONCLUSIONS

In addition to the well-characterised MMPs, ADAMTS-4 and ADAMTS-5, many other ADAMTSs and ADAMs are expressed in cartilage and several show significantly altered expression in OA. Studies aimed at elucidating the pathophysiological roles of these enzymes in cartilage will contribute to our understanding of OA pathogenesis and enable design of targeted inhibitors that effectively target metalloproteinase-mediated cartilage degradation while sparing cartilage repair pathways.

The association of ADAM12 polymorphism with osteoarthritis susceptibility: a meta-analysis

BACKGROUND

The pathology of osteoarthritis (OA) is partly attributed to genetic factors; however, the role of ADAM12 polymorphism is still controversial. It is necessary to perform a meta-analysis to investigate this possible correlation.

METHODS

Case-control studies on the association between OA susceptibility and ADAM12 polymorphism were comprehensively collected by searching PubMed, Embase, and Web of Science. Odds ratios (ORs) and 95% confidence intervals (CIs) were pooled to evaluate OA risk that was possibly conferred by ADAM12 variant. The analyses were performed not only among general population but also in male and female groups.

RESULTS

A total of 8 studies with 10 populations were finally included in this meta-analysis. In the general population, 4 comparisons were carried out (C allele vs G allele, CC vs GG, GC + CC vs GG, and CC vs GC + GG) and found that ADAM12 rs3740199 polymorphism was not associated with increased OA vulnerability. On the other hand, the analyses stratified by gender made 5 comparisons (C allele vs G allele, CC vs GG, GC vs GG, GC + CC vs GG, and CC vs GC + GG). It was shown that rs3740199 polymorphism (GC + CC vs GG) was a risk factor for OA among male patients (OR =1.45, 95% CI =1.04-2.01). Sensitivity analysis indicated that it was an unstable outcome. No correlation was identified in women. Neither heterogeneity nor publication bias was detected in the analyses mentioned above.

CONCLUSION

ADAM12 rs3740199 polymorphism is likely to be associated with OA susceptibility among male patients, other than the general population. More studies are needed to confirm this observation. The mechanism by which ADAM12 variant plays a role in OA pathogenesis is also warranted and important for interpreting this possible correlation.

Genetic effects of rs3740199 polymorphism in ADAM12 gene on knee osteoarthritis: a meta-analysis

BACKGROUND

Knee osteoarthritis (OA) is a complex arthritic condition in which genetic factors play an important role. ADAM12 gene is one of the recognized candidate genes although the results are conflicting. To derive a more precise estimation of the association between rs3740199 polymorphism in ADAM12 gene and risk of knee OA, we performed a meta-analysis based on six related studies, including a total of 2185 cases and 3716 controls.

METHODS

A comprehensive search was performed to identify related studies up to April 14, 2017. We used odds ratios (ORs) with 95% confidence intervals (CIs) to assess the strength of the association. Different genetic models were used to assess the pooled and stratified data.

RESULTS

Overall, no significant association was found in all genetic models (C vs. G, OR = 0.983, 95% CI = 0.910-1.061; CC vs. GG, OR = 1.033, 95% CI = 0.851-1.255; CG vs. GG, OR = 1.030, 95% CI = 0.877-1.209; CC/CG vs. GG, OR = 1.031, 95% CI = 0.886-1.201; CC vs. CG/GG, OR = 1.017, 95% CI = 0.868-1.190). When stratified by ethnicity, no significant association was found.

CONCLUSIONS

This meta-analysis suggested that the rs3740199 polymorphism does not contribute to the development of knee OA. Additional well-designed large studies are required to confirm these findings in different populations.