van Tellingen Anne, Grooteman Muriel P C, Schoorl Margreet, ter Wee Piet M, Bartels Piet C M, Schoorl Marianne, van der Ploeg Tjeerd, Nubé Menso J
Department of Nephrology, Medical Centre Alkmaar, Wilhelminalaan 12, 1815 JD Alkmaar, The Netherlands.
Nephrol Dial Transplant. 2004 May;19(5):1198-203. doi: 10.1093/ndt/gfh122. Epub 2004 Feb 19.
BACKGROUND: Hyperleptinaemia in chronic haemodialysis (CHD) patients has been associated with malnutrition, which is an independent predictor of morbidity and mortality in this patient group. METHODS: To assess the influence of HD on plasma leptin, 10 CHD patients were crossover randomized to low-flux polysulfone (PS: F 6HPS), high-flux PS (F 60S), super-flux PS (F 500S) or super-flux cellulose-tri-acetate (CTA: Tricea 150G) for 12 weeks each. Blood samples were collected at the start of the study and each 12-week period. In addition, the relationship between patient characteristics, inflammation and leptin was analysed. RESULTS: At baseline, all groups showed similar leptin concentrations (mean 33.6+/-21.7 ng/ml). After a single HD session, a significant (P<0.01) decrease was observed with all three high permeable devices (Tricea 150G -52.7+/-6.4%; F 60S -63.1+/-5.7%; F 500S -68.7+/-8.2%), whereas leptin remained stable with low-flux PS. After 12 weeks, a marked increase was observed with low-flux PS (week 1, 30.4+/-23.0; week 12, 40.5+/-5.4 ng/ml, P = 0.05), no change with super-flux CTA and high-flux PS (Tricea 150G week 1, 29.4+/-23.7; week 12, 32.0+/-27.9 ng/ml, P = ns; F 60S week 1, 36.0+/-31.8; week 12, 33.0+/-31.2 ng/ml, P = ns), and a significant decrease with super-flux PS (week 1, 38.3+/-33.0; week 12, 29.5+/-31.9 ng/ml, P = 0.02). The change in leptin after 12 weeks was significantly different between super-flux PS, and both low-flux PS (P = 0.009) and super-flux CTA (P = 0.01). Besides interleukin-6 (IL-6) at the start of the study (P = 0.006), no correlations were observed between patient characteristics, parameters of inflammation and plasma leptin levels. CONCLUSIONS: Apart from low-flux PS, plasma leptin decreased considerably with all three high permeable dialysers after a single HD session. In the long run, leptin levels were lower with high-flux PS than with low-flux PS. Moreover, after switching from high-flux PS to super-flux PS (but not super-flux CTA), an additional decrease in leptin was observed. Apart from IL-6 at the start of the study, neither patient characteristics nor inflammatory parameters correlated with plasma leptin levels in this patient group.
背景:慢性血液透析(CHD)患者的高瘦素血症与营养不良有关,而营养不良是该患者群体发病和死亡的独立预测因素。 方法:为评估血液透析(HD)对血浆瘦素的影响,10例CHD患者交叉随机分组,分别使用低通量聚砜(PS:F 6HPS)、高通量PS(F 60S)、超高通量PS(F 500S)或超高通量三醋酸纤维素(CTA:Tricea 150G)进行治疗,每组治疗12周。在研究开始时及每个12周治疗期结束时采集血样。此外,分析了患者特征、炎症与瘦素之间的关系。 结果:基线时,所有组的瘦素浓度相似(平均33.6±21.7 ng/ml)。单次HD治疗后,使用三种高通透性透析器(Tricea 150G -52.7±6.4%;F 60S -63.1±5.7%;F 500S -68.7±8.2%)后瘦素均显著(P<0.01)下降,而使用低通量PS时瘦素保持稳定。12周后,低通量PS组瘦素显著升高(第1周,30.4±23.0;第12周,40.5±5.4 ng/ml,P = 0.05),超高通量CTA组和高通量PS组无变化(Tricea 150G第1周,29.4±23.7;第12周,32.0±27.9 ng/ml,P = 无统计学意义;F 60S第1周,36.0±31.8;第12周,33.0±31.2 ng/ml,P = 无统计学意义),超高通量PS组显著下降(第1周,38.3±33.0;第12周,29.5±31.9 ng/ml,P = 0.02)。12周后,超高通量PS组与低通量PS组(P = 0.009)和超高通量CTA组(P = 0.01)的瘦素变化有显著差异。除研究开始时的白细胞介素-6(IL-6)(P = 0.006)外,未观察到患者特征、炎症参数与血浆瘦素水平之间的相关性。 结论:除低通量PS外,单次HD治疗后,使用三种高通透性透析器均可使血浆瘦素显著下降。从长期来看,高通量PS组的瘦素水平低于低通量PS组。此外,从高通量PS转换为超高通量PS(而非超高通量CTA)后,瘦素进一步下降。除研究开始时的IL-6外,该患者群体的患者特征和炎症参数均与血浆瘦素水平无关。
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