Ravasco Paula, Monteiro Grillo Isabel, Camilo Maria
Unidade de Nutrição e Metabolismo, Instituto de Medicina Molecular, Faculdade de Medicina Universidade de Lisboa, Avenida Prof. Egas Moniz, 1649-028, Lisboa, Portugal.
Clin Nutr. 2007 Feb;26(1):7-15. doi: 10.1016/j.clnu.2006.10.005. Epub 2006 Dec 12.
To devise a meaningful nutritional therapy in cancer, a greater understanding of nutritional dimensions as well as patients' expectations and disease impact is essential. We have shown that nutritional deterioration in patients with gastrointestinal and head and neck cancer was multifactorial and mainly determined by the tumour burden and location. In a larger cohort, stage and location were yet again the major determinants of patients' quality of life (QoL), despite the fact that nutritional deterioration combined with intake deficits were functionally more relevant than cancer stage. Based on this framework, the potential role of integrated oral nutritional support on outcomes was investigated. In a pilot study using individualized nutritional counselling on a heterogeneous patient population, the achieved improvement of nutritional intake was proportional to a better QoL. The role of early nutritional support was further analysed in a prospective randomized controlled trial in head and neck cancer patients stratified by stage undergoing radiotherapy. Pre-defined outcomes were: nutritional status and intake, morbidity and QoL, at the end and 3 months after radiotherapy. Nutritional interventions, only given during radiotherapy, consisted of three randomization arms: (1) individualized nutritional counselling vs. (2) ad libitum diet+high protein supplements vs. (3) ad libitum diet. Nutritional interventions 1 and 2 positively influenced outcomes during radiotherapy; however, 3 months after its completion individualized nutritional counselling was the single method capable of sustaining a significant impact on patients' outcomes. The early provision of the appropriate mixture of foods and textures using regular foods may modulate outcomes in cancer patients.
为了设计出有意义的癌症营养治疗方案,深入了解营养层面以及患者的期望和疾病影响至关重要。我们已经表明,胃肠道和头颈癌患者的营养恶化是多因素的,主要由肿瘤负荷和位置决定。在一个更大的队列中,尽管营养恶化与摄入不足在功能上比癌症分期更相关,但分期和位置仍然是患者生活质量(QoL)的主要决定因素。基于这一框架,研究了综合口服营养支持对治疗结果的潜在作用。在一项针对异质患者群体进行个性化营养咨询的试点研究中,营养摄入的改善程度与更好的生活质量成正比。在一项对头颈癌患者按分期进行分层放疗的前瞻性随机对照试验中,进一步分析了早期营养支持的作用。预先确定的结果是放疗结束时和放疗后3个月的营养状况和摄入量、发病率和生活质量。营养干预仅在放疗期间进行,包括三个随机分组:(1)个性化营养咨询与(2)自由饮食+高蛋白补充剂与(3)自由饮食。营养干预1和2对放疗期间的结果有积极影响;然而,放疗结束3个月后,个性化营养咨询是唯一能够对患者结果产生显著持续影响的方法。使用常规食物早期提供适当的食物和质地组合可能会调节癌症患者的治疗结果。