一项随机、双盲、对照试验,评估两种剂量的乳铁蛋白与活性对照对健康成人免疫学和安全性参数的影响。

IF 1.2 4区 医学 Q4 PHARMACOLOGY & PHARMACY
Ross D Peterson, Liana L Guarneiri, Caryn G Adams, Meredith L Wilcox, Anthony J Clark, Nathan P Rudemiller, Kevin C Maki, Carrie-Anne Malinczak
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引用次数: 0

摘要

重组人乳铁蛋白(rhLF)是一种具有商业价值的免疫支持食品成分。研究的目的是评估与牛乳铁蛋白(bLF)相比,来自 K. phaffii 的 Helaina rhLF(effera™)在 28 天内的免疫原性/alloimmunization 潜力。研究1是一项随机、双盲、平行臂对照试验,66名健康成年人被随机分配到3个组中的1个:高剂量rhLF(3.4克/天)、低剂量rhLF(0.34克/天)或bLF(3.4克/天)。参与者完成为期 28 天的补充,并在第 28、56 和 84 天进行随访。研究 2 是一项为期 12 周的无干预观察研究,共招募了 24 名健康成年人。在这两项研究中,主要终点都是获取血清分析抗-LF抗体水平。在研究1中,bLF组血清抗LF抗体从基线到第56天的变化(后/前比值的最小二乘几何平均数和95%置信区间:3.01;2.08,4.35)大于低剂量rhLF组(1.07;0.77,1.49;P<0.001)和高剂量rhLF组(1.02;0.62,1.70;P<0.001)血清抗hLF抗体的变化。rhLF组的变化与观察研究相似,表明摄入后抗hLF抗体没有变化,也没有异体免疫的证据。各组之间的安全性结果变化相似,均在正常范围内。这些结果表明,在方案规定的条件下,健康成年人摄入作为食品配料的effera™后,抗hLF抗体不会增加,也不会发生不良事件,摄入量最高可达3.4克/天(clinicaltrials.gov: NCT06012669)。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Randomized, Double-Blind, Controlled Trial to Assess the Effects of Lactoferrin at Two Doses vs. Active Control on Immunological and Safety Parameters in Healthy Adults.

Recombinant human lactoferrin (rhLF) is of commercial interest for immune support as a food ingredient. The objective was to evaluate the immunogenicity/alloimmunization potential of Helaina rhLF (effera™) from K. phaffii over a 28-day period compared to bovine LF (bLF). Study 1 was a randomized, double-blind, parallel arm, controlled trial where 66 healthy adults were randomly allocated to 1 of 3 groups: high-dose rhLF (3.4 g/d), low-dose rhLF (0.34 g/d), or bLF (3.4 g/d). Participants completed a 28-day supplementation period with follow-up visits on Days 28, 56, and 84. Study 2 was a 12-week observational study with no intervention that enrolled 24 healthy adults. In both studies, serum was obtained for analysis of anti-LF antibody levels as the primary endpoint. In Study 1, change from baseline to Day 56 in serum anti-bLF antibodies in the bLF group (least squares geometric mean and 95% confidence interval for the post/pre ratio: 3.01; 2.08, 4.35) was greater than the changes in serum anti-hLF antibodies in the low-dose rhLF (1.07; 0.77, 1.49; P < 0.001) and high-dose rhLF (1.02; 0.62, 1.70; P < 0.001) groups. The rhLF groups had similar changes to the observational study, indicating no change in anti-hLF antibodies and no evidence of alloimmunization following ingestion. Changes in safety outcomes were similar between groups and within normal ranges. These results show that under the conditions of the protocol, no increased anti-hLF antibodies or adverse events were identified following ingestion of effera™ as a food ingredient at an intake level up to 3.4 g/d in healthy adults (clinicaltrials.gov: NCT06012669).

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来源期刊
CiteScore
3.40
自引率
4.50%
发文量
53
审稿时长
4.5 months
期刊介绍: The International Journal of Toxicology publishes timely, peer-reviewed papers on current topics important to toxicologists. Six bi-monthly issues cover a wide range of topics, including contemporary issues in toxicology, safety assessments, novel approaches to toxicological testing, mechanisms of toxicity, biomarkers, and risk assessment. The Journal also publishes invited reviews on contemporary topics, and features articles based on symposia. In addition, supplemental issues are routinely published on various special topics, including three supplements devoted to contributions from the Cosmetic Review Expert Panel.
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