El Ouali El Mokhtar, Kartibou Jihan, Del Coso Juan, El Makhzen Badreddine, Bouguenouch Laila, El Akbir Ramzi, El Haboussi Abdelmoujoud, Akhouayri Omar, Ibrahimi Azeddine, Mesfioui Abdelhalem, Zouhal Hassane
Sports Science Research Team, Institute of Sports Sciences, Hassan I University, Settat 26002, Morocco.
Department of Biology, Laboratory of Biology and Health, Ibn Tofail University of Kenitra, Kenitra 14000, Morocco.
Genes (Basel). 2025 May 28;16(6):651. doi: 10.3390/genes16060651.
: Non-contact tissue injury in elite athletes is influenced by multiple factors, including genetic predisposition. Although previous research has identified several genetic markers associated with injury susceptibility, the role of the (cluster of differentiation 36) gene, a key regulator of fatty acid transport into skeletal muscle and other vital tissues, remains unexplored in this context. A single-nucleotide polymorphism in the gene (rs1761667) involves an A-to-G substitution (with three genotypes = AA and GG homozygotes and AG heterozygotes), and previous data have reported that individuals carrying the AA genotype of the gene show reduced expression of the CD36 protein and poorer lipid metabolism. Additionally, it has been recently found that the frequency of the AA genotype is significantly lower in elite cyclists compared to field hockey players. No previous study has examined the association between the rs1761667 polymorphism and athlete injury risk. Therefore, the aim of this study was to investigate the potential association between the rs1761667 polymorphism and non-contact tissue injury susceptibility in elite Moroccan cyclists and field hockey players. : Forty-three elite Moroccan male athletes, including 19 cyclists and 24 national team field hockey players, volunteered for this study. Non-contact tissue injuries during the 2022/2023 sports season have been recorded. Genotyping of the rs1761667 polymorphism was carried out using Sanger sequencing. Chi-square tests were used to analyze the Hardy-Weinberg equilibrium and compare the genotypes and characteristics of athletes with and without non-contact injuries. : During the 2022/2023 sports season, 21.05% of cyclists (4 out of 19) and 33.33% of field hockey players (8 out of 24) experienced non-contact tissue injuries. The genotypic frequency was similar in the injured and non-injured groups among cyclists (χ and not calculated because "AA = 0" in both groups), field hockey players (χ = 3.30, = 0.19), and all athletes (χ = 1.73, = 0.41). Additionally, the dominant model of the rs1761667 polymorphism (AA+AG vs. GG) did not reveal a significant risk of non-contact injuries among cyclists (OR: 1.20, 95% CI: 0.13-19.09, > 0.9999), field hockey players (OR: infinity, 95% CI: 0.23-infinity, = 0.53), and all athletes (OR: 2.75, 95% CI: 0.32-34.12, = 0.65). Furthermore, the recessive model (AA vs. AG+GG) did not demonstrate any effect on the risk of non-contact injuries in cyclists (OR and 95% CI not calculated, > 0.9999), field hockey players (OR: 0.33, 95% CI: 0.05-2.40, = 0.38), and all athletes (OR: 0.55, 95% CI: 0.10-2.60, = 0.69). : This study suggests that the association between specific genotypes (AA, AG, and GG) or alleles (A and G) of the gene and susceptibility to non-contact tissue injuries in Moroccan cycling and field hockey players is uncertain. Given the small sample size, further studies will be needed to explore and confirm these findings.
精英运动员的非接触性组织损伤受多种因素影响,包括遗传易感性。尽管先前的研究已经确定了几种与损伤易感性相关的基因标记,但在这种情况下,作为脂肪酸转运到骨骼肌和其他重要组织的关键调节因子的(分化簇36)基因的作用仍未得到探索。该基因中的一个单核苷酸多态性(rs1761667)涉及A到G的替换(有三种基因型=AA和GG纯合子以及AG杂合子),先前的数据报道,携带该基因AA基因型的个体CD36蛋白表达降低且脂质代谢较差。此外,最近发现精英自行车运动员中AA基因型的频率明显低于曲棍球运动员。以前没有研究考察过rs1761667多态性与运动员损伤风险之间的关联。因此,本研究的目的是调查rs1761667多态性与摩洛哥精英自行车运动员和曲棍球运动员非接触性组织损伤易感性之间的潜在关联。 43名摩洛哥精英男性运动员,包括19名自行车运动员和24名国家队曲棍球运动员,自愿参与本研究。记录了2022/2023赛季期间的非接触性组织损伤情况。使用桑格测序法对rs1761667多态性进行基因分型。采用卡方检验分析哈迪-温伯格平衡,并比较有无非接触性损伤的运动员的基因型和特征。 在2022/2023赛季,21.05%的自行车运动员(19人中的4人)和33.33%的曲棍球运动员(24人中的8人)经历了非接触性组织损伤。自行车运动员中受伤组和未受伤组的基因型频率相似(χ和未计算,因为两组中“AA = 0”),曲棍球运动员中(χ = 3.30, = 0.19),以及所有运动员中(χ = 1.73, = 0.41)。此外,rs1761667多态性的显性模型(AA + AG与GG)在自行车运动员(比值比:(1.20),95%置信区间:(0.13 - 19.09),(P>0.9999))、曲棍球运动员(比值比:无穷大,95%置信区间:(0.23 -)无穷大,(P = 0.53))和所有运动员中(比值比:(2.75),95%置信区间:(0.32 - 34.12),(P = 0.65))均未显示出非接触性损伤的显著风险。此外,隐性模型(AA与AG + GG)在自行车运动员(比值比和95%置信区间未计算,(P>0.9999))、曲棍球运动员(比值比:(0.33),95%置信区间:(0.05 - 2.40),(P = 0.38))和所有运动员中(比值比:(0.55),95%置信区间:(0.10 - 2.60),(P = 0.69))均未显示出对非接触性损伤风险的任何影响。 本研究表明,该基因的特定基因型(AA、AG和GG)或等位基因(A和G)与摩洛哥自行车运动员和曲棍球运动员非接触性组织损伤易感性之间的关联尚不确定。鉴于样本量较小,需要进一步研究来探索和证实这些发现。
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