【Abstract】
The associations between different combinations of metabolic abnormalities and the risk of all and site-specific cancers remain unclear. We aimed to estimate the association and interplay between serum cholesterol, glycemic status and risk of cancer in the China Cardiometabolic Disease and Cancer Cohort (4C)-Study, a nationwide, multicenter, prospective, population-based study. The investigation was performed in 137,884 participants during 2014-2016. Incident cancer was defined as the first occurrence of any type cancer of all sites during follow-up. After 510,164 person-years of follow-up, 1,710 were detected as incident cancer after exclusion of participants diagnosed as cancer within 6 months from baseline. A relatively low level of LDL cholesterol (<100mg/dl) was related to a significant higher risk of incident cancer [1.20 (1.08-1.34); P=0.0007]. Diabetic individuals have a significantly higher risk of incident cancer, especially those with poorly glycemic control. Diabetic participants with both lower levels of LDL cholesterol and poorly glycemic control were at a higher risk of incident cancer [1.42 (1.10-1.81); P=0.006]. Our study showed a positive association of cancer risk with low-level LDL cholesterol and diabetes and found that participants with both lower levels of LDL cholesterol and poorly controlled diabetes had the higher risk of incident cancer, which indicates the compelling need of achieving glycemic control goal and maintaining appropriate LDL cholesterol levels.
【中文摘要】
代謝危險因素與惡性腫瘤的發生風險密切相關,不同代謝組分與惡性腫瘤發病風險的關係存在一定差異。我們利用中國心臟代謝疾病與癌症隊列(4C)研究的前瞻性研究數據,探討中國中老年人群血清膽固醇水平、血糖狀態與惡性腫瘤發病風險之間的相互關係及聯合作用。研究人群來自4C研究,覆蓋16個省份20個社區中心,共納入137,884名基線無惡性腫瘤的40歲及以上成人,平均隨訪3.8年。在510,164人年的隨訪中,去除基線後6個月內診斷的惡性腫瘤病例後,新發惡性腫瘤患者共1,710例。研究發現惡性腫瘤的發病風險增加與較低的低密度脂蛋白膽固醇(LDL-C)水平顯著相關,與LDL-C≥100 mg/dL的個體相比,LDL-C<100mg/dL的人群惡性腫瘤總體發病風險增加20%(風險比為1.20,95%CI 1.08~1.34;P=0.0007)。與非糖尿病人群相比,糖尿病人群的惡性腫瘤總體發病風險顯著增加。按照血糖控制情況分組,發現與糖代謝正常人群相比,血糖控制不良,即糖化血紅蛋白水平≥7.0%的糖尿病患者發生惡性腫瘤的風險更高;而若血糖控制不佳的糖尿病患者(糖化血紅蛋白水平≥7.0%),若同時存在LDL-C較低(<100mg/dL),這一風險進一步增加(風險比為1.42,95% CI 1.10~1.81)。研究發現,血糖控制不佳及過低LDL-C均與惡性腫瘤的發生風險相關,強調了代謝管理中適宜血脂和血糖控制目標的重要性。