收稿日期: 2025-04-29
网络出版日期: 2025-08-11
基金资助
河北省医学科学研究课题计划资助项目(20201294)
The relationship between the triglyceride⁃glucose index and its modified index and colorectal cancer: A prospective cohort study
Received date: 2025-04-29
Online published: 2025-08-11
目的 探讨甘油三酯-葡萄糖指数(triglyceride-glucose index,TyG)及其修正指数与结直肠癌(CRC)发病风险之间的关联。 方法 选取2006年度参加开滦集团健康体检的人员为研究对象,最终纳入93 177例观察对象。根据TyG及其修正指数四分位将研究对象分为Q1组、Q2组、Q3组、Q4组。以参加体检为随访起点,对研究对象进行随访,以新发CRC为结局事件,以发生结局事件、死亡或随访时间结束为随访终点。采用限制性立方样条模型(RCS)和Cox比例风险回归模型分析TyG及TyG修正指数与结直肠癌发病风险的剂量反应关系与风险比(HR)及95%置信区间(95%CI)。为标准化比较不同指标,通过计算TyG、TyG-BMI、TyG-WC、TyG-WHR、TyG-WHtR、TyG-WWI每增加一个标准差结直肠癌的HR增加的大小来比较TyG与TyG修正指数对结直肠癌发病风险关联性的强弱。 结果 (1)TyG及TyG修正指数均与结直肠癌发病风险具有显著的剂量-反应关系。(2)TyG:每增加一个标准差结直肠癌发病风险增加1.17(1.09 ~ 1.27)倍;Q3组较Q1组增加1.25(1.01 ~ 1.55)倍,Q4组增加1.26(1.01 ~ 1.57)倍。TyG-BMI:每增加一个标准差增加1.20(1.07 ~ 1.35)倍;Q3组较Q1组增加1.32(1.06 ~ 1.64)倍,Q4组增加1.51(1.21 ~ 1.88)倍。TyG-WC:每增加一个标准差增加1.22(1.13 ~ 1.32)倍;Q3组较Q1组增加1.35(1.08 ~ 1.70)倍,Q4组增加1.56(1.24 ~ 1.96)倍。TyG-WHtR:每增加一个标准差增加1.24(1.08 ~ 1.42)倍;Q2组较Q1组增加1.31(1.03~1.66)倍,Q3组增加1.55(1.23 ~ 1.95)倍,Q4组增加1.60(1.27 ~ 2.02)倍。TyG-WHR:每增加一个标准差增加1.19(1.10 ~ 1.29)倍;Q4组较Q1组增加1.42(1.14 ~ 1.77)倍。TyG-WWI:每增加一个标准差增加1.22(1.13 ~ 1.32)倍;Q3组较Q1组增加1.58(1.26 ~ 1.98)倍,Q4组增加1.58(1.25 ~ 1.99)倍。(3)在男性、年龄分层中均能观察到TyG及TyG修正指数与CRC发病风险具有关联。TyG及TyG修正指数与结肠癌和直肠癌发病风险也具有关联性。 结论 (1)高水平TyG及其修正指数暴露是CRC的独立危险因素。(2)TyG及TyG修正指数均与结直肠癌发病风险具有显著的剂量-反应关系。(3)与CRC发病风险关联性:TyG-WWI、TyG-WHtR、TyG-BMI、TyG-WC、TyG-WHR均强于TyG指数。
陆燚 , 戴世龙 , 王明君 , 周静 , 郝君颖 , 郑辰 , 徐欣博 , 丁珊 , 张青松 . 甘油三酯-葡萄糖指数及其修正指数与结直肠癌关系的前瞻性队列研究[J]. 实用医学杂志, 2025 , 41(15) : 2362 -2371 . DOI: 10.3969/j.issn.1006-5725.2025.15.011
Objective To investigate the association between the TyG index, its modified variants, and the risk of developing colorectal cancer (CRC). Methods This study included a total of 93,177 participants from the 2006 Kailuan Group health examination cohort. Participants were categorized into four quartiles (Q1-Q4) according to their TyG and modified TyG indices. Follow-up began at the baseline examination, with incident CRC as the primary outcome. Participants were censored at the time of CRC diagnosis, death, or the end of the study, whichever occurred first. The dose-response relationship between TyG and its modified indices and the risk of CRC was evaluated using restricted cubic splines (RCS) in conjunction with Cox proportional hazards regression models, yielding hazard ratios (HRs) and 95% confidence intervals (CIs). To compare the strength of associations between TyG and its modified versions (TyG-BMI, TyG-WC, TyG-WHR, TyG-WHtR, TyG-WWI) and CRC risk, HRs for CRC per one standard deviation increase in each index were calculated and compared. Results Both the TyG index and its modified variants demonstrated a significant dose-response relationship with the risk of CRC incidence. Specifically, for the TyG index, each 1-standard deviation (SD) increase was associated with a 1.17-fold (95%CI: 1.09 ~ 1.27) higher risk of CRC. Compared with the first quartile (Q1), the third quartile (Q3) and fourth quartile (Q4) exhibited a 1.25-fold (95%CI: 1.01 ~ 1.55) and 1.26-fold (95%CI: 1.01 ~ 1.57) increased risk, respectively. For TyG-BMI, each 1-SD increase was linked to a 1.20-fold (95%CI: 1.07 ~ 1.35) elevated CRC risk. Compared with Q1, Q3 and Q4 showed a 1.32-fold (95%CI: 1.06 ~ 1.64) and 1.51-fold (95%CI: 1.21 ~ 1.88) increase, respectively. Regarding TyG-WC, each 1-SD increment was associated with a 1.22-fold (95%CI: 1.13 ~ 1.32) higher CRC risk, with Q3 and Q4 showing a 1.35-fold (95%CI: 1.08 ~ 1.70) and 1.56-fold (95%CI: 1.24 ~ 1.96) increased risk compared to Q1. For TyG-WHtR, each 1-SD increase was associated with a 1.24-fold (95%CI: 1.08-1.42) higher CRC risk. Compared with Q1, Q2, Q3, and Q4 demonstrated a 1.31-fold (95%CI: 1.03 ~ 1.66), 1.55-fold (95%CI: 1.23 ~ 1.95), and 1.60-fold (95%CI: 1.27 ~ 2.02) increase, respectively. In the case of TyG-WHR, each 1-SD increase was associated with a 1.19-fold (95%CI: 1.10 ~ 1.29) higher CRC risk, with Q4 showing a 1.42-fold (95%CI: 1.14 ~ 1.77) increased risk compared to Q1. Finally, for TyG-WWI, each 1-SD increase was associated with a 1.22-fold (95%CI: 1.13 ~ 1.32) elevated CRC risk, with both Q3 and Q4 showing a 1.58-fold increase (Q3: 95%CI: 1.26 ~ 1.98; Q4: 95%CI: 1.25 ~ 1.99). Stratified analyses by sex and age consistently revealed significant associations between the TyG index and its modified variants and CRC risk. Furthermore, these indices were independently associated with the incidence of both colon cancer and rectal cancer. Conclusions (1) Elevated levels of the TyG index and its modified variants are independent risk factors for CRC. (2) Both the TyG index and its modified forms demonstrate a significant dose-response association with the incidence of CRC. (3) Among the modified TyG indices, TyG-WWI, TyG-WHtR, TyG-BMI, TyG-WC, and TyG-WHR showed stronger correlations with CRC risk compared to the original TyG index.
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