Singh N P, Mandal S K, Thakur A, Kapoor D, Anuradha S, Prakash A, Kohli R, Agarwal S K
Nephrology Division, Department of Medicine, Maulana Azad Medical College, Lok Nayak Hospital, New Delhi, India.
Ren Fail. 2003 Mar;25(2):255-66. doi: 10.1081/jdi-120018726.
Chronic renal failure patients on hemodialysis are at an increased risk of acquiring hepatitis B infection. Hence vaccination against hepatitis B assumes great importance in these patients. However, the response to hepatitis B vaccination is poor, even when 4 double doses (40 microg) of the vaccine are given. This study was conducted to determine the efficacy of GM-CSF as an adjuvant to hepatitis B vaccine in CRF patients.
CRF patients including both hemodialysis (HD) and non-dialysis (ND) patients were randomized to receive either placebo or a single injection of GM-CSF (in varying doses of 50 microg, 100 microg, 150 microg) a day prior to the 1st dose of recombinant hepatitis B vaccine (40 microg). Three more doses of the vaccine were given at 1, 2, and 6 months. The anti-HBs antibody titres were measured by ELISA at 3 and 7 months. Patients having antibody titres less than 10 IU/L were considered non-responders. The response rate and mean antibody titers were compared between the control (I) and GM-CSF (II) groups.
In group I, 31 and 27 patients were available for evaluation at 3 and 7 months respectively. In group II, 33 and 28 patients could be evaluated at the same time points. Within the control group (group I), the response rate in hemodialysis patients (63.6%) was lower as compared to non-dialysis patients (81.2%). The response rate in group II was higher than that in group I at both 3 months as well as 7 months (78.1% vs. 62.3% and 89.3% vs. 74.1%, p = ns). The best response rates in group II were observed when GM-CSF was used in a dose of 150 microg (90.9% at 3 months and 100% at 7 months). The mean antibody titers were also found to be higher in the group II as compared to group I (409.6 vs. 243.9 IU/L, p = 0.01).
The results of this randomized, prospective study suggest that: 1. Patients with chronic renal failure should be vaccinated for hepatitis B as chronic renal insufficiency is established. 2. GM-CSF is an effective adjuvant to hepatitis B vaccine in these patients especially when a priming dose of 150 microg is used prior to 1st dose of hepatitis B vaccination.
接受血液透析的慢性肾衰竭患者感染乙型肝炎的风险增加。因此,对这些患者进行乙型肝炎疫苗接种非常重要。然而,即使给予4剂双倍剂量(40微克)的疫苗,对乙型肝炎疫苗的反应仍较差。本研究旨在确定粒细胞巨噬细胞集落刺激因子(GM-CSF)作为乙型肝炎疫苗佐剂在慢性肾衰竭患者中的疗效。
将包括血液透析(HD)和非透析(ND)患者在内的慢性肾衰竭患者随机分组,在第1剂重组乙型肝炎疫苗(40微克)前1天接受安慰剂或单次注射不同剂量(50微克、100微克、150微克)的GM-CSF。在1、2和6个月时再接种3剂疫苗。在3个月和7个月时通过酶联免疫吸附测定(ELISA)测量抗-HBs抗体滴度。抗体滴度低于10 IU/L的患者被视为无反应者。比较对照组(I)和GM-CSF组(II)的反应率和平均抗体滴度。
在I组中,分别有31例和27例患者在3个月和7个月时可供评估。在II组中,在相同时间点有33例和28例患者可进行评估。在对照组(I组)中,血液透析患者的反应率(63.6%)低于非透析患者(81.2%)。II组在3个月和7个月时的反应率均高于I组(78.1%对62.3%以及89.3%对74.1%,p =无统计学意义)。当使用150微克剂量的GM-CSF时,II组的反应率最佳(3个月时为90.9%,7个月时为100%)。还发现II组的平均抗体滴度高于I组(409.6对243.9 IU/L,p = 0.01)。
这项随机、前瞻性研究的结果表明:1. 慢性肾衰竭患者一旦确诊慢性肾功能不全就应接种乙型肝炎疫苗。2. GM-CSF是这些患者乙型肝炎疫苗的有效佐剂,尤其是在第1剂乙型肝炎疫苗接种前使用150微克的启动剂量时。