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茶、血脂与乳腺癌患者无进展生存

 SIBCS 2020-08-27

  既往研究发现,绿茶有利于乳腺癌生存者的脂肪代谢。不过,茶摄入量对于乳腺癌患者生存的影响尚不明确。

  2019年5月16日,施普林格·自然《乳腺癌研究与治疗》在线发表中国中山大学、广东省疾病预防控制中心、中山大学附属第一医院、中山大学孙逸仙纪念医院、中山大学肿瘤防治中心、中山大学附属第三医院的研究报告,分析了茶、茶摄入量、血脂对乳腺癌患者生存的影响。

  该研究于2008年4月~2012年3月在中国广州入组新诊断原发性乳腺癌患者共计1551例,并随访至2017年12月31日,研究终点为无进展生存(从乳腺癌诊断至复发、转移、死亡或随访截止日期)。通过多因素比例风险回归模型,对诊断时年龄、学历、绝经、临床分期、雌激素受体状态、HER2状态等人口统计学和临床影响因素进行校正后,计算不同的茶、茶摄入量、血脂(甘油三酯、总胆固醇、低密度脂蛋白胆固醇)的无进展生存风险比和95%置信区间。

  结果发现,乳腺癌诊断后,与不饮茶者相比:

  • 所有饮茶者:复发转移死亡风险低36%(风险比:0.64,95%置信区间:0.40~1.05)

  • 饮用绿茶者:复发转移死亡风险低67%(风险比:0.33,95%置信区间:0.10~1.05)

  • 饮用红茶者:复发转移死亡风险低68%(风险比:0.32,95%置信区间:0.05~2.35)

  • 饮乌龙茶者:复发转移死亡风险高32%(风险比:1.32,95%置信区间:0.60~2.90)

  • 饮绿茶红茶:复发转移死亡风险低28%(风险比:0.72,95%置信区间:0.22~2.32)

  • 饮普洱茶者:复发转移死亡风险低55%(风险比:0.45,95%置信区间:0.11~1.85)

  • 饮其他茶者:复发转移死亡风险低39%(风险比:0.61,95%置信区间:0.22~1.68)

  • 饮非乌龙茶:复发转移死亡风险低48%(风险比:0.52,95%置信区间:0.29~0.91)

  所有饮茶者与不饮茶者相比:

  • 甘油三酯正常:复发转移死亡风险低50%(风险比:0.50,95%置信区间:0.25~1.00,交互分析P=0.962)

  • 甘油三酯超标:复发转移死亡尚未发生

  • 总胆固醇正常:复发转移死亡风险低62%(风险比:0.38,95%置信区间:0.18~0.82)

  • 总胆固醇超标:复发转移死亡风险高22%(风险比:1.22,95%置信区间:0.13~11.8,交互分析P=0.634)

  • 低密度脂蛋白胆固醇正常:复发转移死亡风险低62%(风险比:0.38,95%置信区间:0.17~0.88)

  • 低密度脂蛋白胆固醇超标:复发转移死亡风险低56%(风险比:0.44,95%置信区间:0.11~1.81,交互分析P=0.880)

  此外,乳腺癌诊断后,与不饮茶者相比:

  • 每周饮茶<7次:复发转移死亡风险低36%(风险比:0.64,95%置信区间:0.30~1.34)

  • 每周饮茶≥7次:复发转移死亡风险低70%(风险比:0.30,95%置信区间:0.11~0.84,趋势分析P=0.021)

  因此,该研究结果表明,乳腺癌诊断后,经常饮茶(尤其绿茶,除了乌龙茶)有利于乳腺癌患者无进展生存,尤其对于血脂正常的女性。

Breast Cancer Res Treat. 2019 May 16.

Effects of tea consumption and the interactions with lipids on breast cancer survival.

Zhang JY, Liao YH, Lin Y, Liu Q, Xie XM, Tang LY, Ren ZF.

School of Public Health, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Center for Disease Control and Prevention, Guangzhou, China; The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; The Second Affiliated Hospital, Sun Yat-sen University, Guangzhou, China; The Sun Yat-sen Cancer Center, Guangzhou, China; The Third Affiliated Hospital, Sun Yat-sen University, Guangzhou, China

PURPOSE: The effect of tea consumption on breast cancer survival remained to be explored. Meanwhile, green tea favorably facilitates lipid metabolisms in breast cancer survivors. This study aimed to examine the effect of tea consumption and the interactions with lipids on breast cancer survival.

METHODS: A total of 1551 breast cancer patients were recruited between April 2008 and March 2012 and followed up until 31 December 2017 in Guangzhou. The endpoint was progression-free survival (PFS). Hazard ratios (HR) and 95% confidence intervals (CI) were calculated using multivariate Cox proportional to estimate the associations.

RESULTS: PFS was better among women who regularly drank all teas (mainly green tea) except oolong after cancer diagnosis compared with non-tea drinkers (HR 0.52; 95% CI 0.29~0.91). This association was more evident among women with normal (HR 0.38; 95% CI 0.18~0.82) than higher (HR 1.22; 95% CI 0.13~11.82) total cholesterol, though the interaction was not significant. Moreover, the more they drank (≥7 times/week), the better prognosis was (HR 0.30; 95% CI 0.11~0.84). In contrast, oolong tea was observed to have a potential impaired effect on PFS.

CONCLUSIONS: Our findings suggested that regularly drinking all teas (mainly green tea) except oolong after diagnosis was beneficial to breast cancer survival, particularly for women with normal lipids, while oolong tea may have an impaired effect.

KEYWORDS: Tea consumption Lipids Breast cancer progression-free survival

PMID: 31098780

DOI: 10.1007/s10549-019-05253-5

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