ASCO 2022:心脏代谢和腹部脂肪对女性乳腺癌患者身体功能的影响

2022-05-31 MedSci原创 MedSci原创

AAT可能与化疗前的身体功能有更紧密的联系,而在乳腺癌患者治疗期间,心脏代谢特征可能有临床影响。

乳腺癌的治疗常常导致患者身体功能的下降,而高水平的腹部脂肪(AAT)可能会加重身体功能的恶化。然而,由胰岛素抵抗、血脂异常、高血压和中心脂肪等相互关联的风险因素所组成的心脏代谢对乳腺癌患者身体功能的影响,却很少被提及。

来自维克森林大学医学院的研究人员评估了乳腺癌患者在接受潜在的心脏毒性化疗之前和期间,AAT水平与身体功能和心脏代谢健康之间的关系。在这项研究中,研究人员通过NCORP招募了111名I-III期乳腺癌患者,平均年龄为 56.1 ± 11.0 岁,通过6分钟步行距离(6MWD)测试以确定身体功能,通过磁共振成像(MRI)评估AAT,并在化疗前和化疗后3个月评估了心脏代谢。

具体来说,MRI 用于测量腰围 (WC),以及皮下 (SAT) 和内脏脂肪组织 (VAT) 的 AAT 成分。为了评估心脏代谢,研究人员使用 WC、平均动脉压(MAP)、葡萄糖(FPG)、高密度脂蛋白胆固醇(HDL)和甘油三酯(TG)等个体代谢综合征(MetS)成分来计算MetS严重程度Z分数 (MetS-Z) 。基线和 3 个月的数据通过配对的t检验进行比较。回归分析用于确定 6MWD 和 MetS-Z 之间的关系以及 AAT(即SAT和VAT)的可能中介效应。

近期,研究人员在ASCO大会上公布了研究结果,发现化疗 3 个月后,与基线相比,6MWD降低(457±90.7 vs 428±92.9 m,P= 0.001),MetS-Z增加(-1.13±3.01 vs 0.30±3.97 AU,P< 0.001)。MetS-Z的增加主要是由于TG的升高和HDL的降低。

另外,没有观察到SAT或VAT的变化。尽管MetS-Z与基线时的6MWD有关,但在控制了SAT和VAT后,MetS-Z不是显著的预测因素(B=-3.39,P= 0.34,95%CI [-10.4, 3.62])。MetS-Z还与3个月时的6MWD有关,在控制了SAT和VAT后,仍然是显著的(B = -5.36,P= 0.03,95% CI [-10.3, -0.46])。

总之,AAT可能与化疗前的身体功能有更紧密的联系,而在乳腺癌患者治疗期间,心脏代谢特征可能有临床影响。未来,需要进行更深入的研究,以了解不同治疗方式(如运动、饮食、药物治疗)对心脏代谢和身体功能的影响。

参考资料

Emily M Heiston, Leila Mabudian, Nathaniel S. O'Connell, Ralph D'Agostino, Peter H. Brubaker, Shannon L. Mihalko, Kerryn Reding, Moriah Bellissimo, Amy Ladd, Alexander Lucas, Jennifer Jordan, Bonnie Ky, Tonya Calhoun, Mary Helen Hackney, Kathryn E. Weaver, Glenn Jay Lesser, W. Gregory Hundley.Impact of cardiometabolic health and abdominal adipose tissue on physical function in women with breast cancer (WF-97415).

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    2022-10-03 quxin068
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