益生菌协同小麦水解肽预防幼鼠小麦过敏
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(中国农业大学食品科学与营养工程学院 北京 100083)

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The Prevention of Wheat Allergy in Young Mice by Probiotics Combined with Wheat Hydrolyzed Peptides
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(College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083)

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    摘要:

    为对比小麦水解肽以及益生菌与其混合物对幼鼠小麦过敏的预防效果,评估益生菌与小麦水解肽是否存在协同增效作用,通过建立小麦过敏幼鼠模型,观察幼鼠体质量、直肠温度、脏器指数、空肠病理切片,检测其血清特异性免疫球蛋白E(IgE)、特异性免疫球蛋白G1(IgG1)、特异性免疫球蛋白G2a(IgG2a)水平,测定其脾脏细胞因子[白细胞介素4(IL-4)、白细胞介素5(IL-5)、白细胞介素13(IL-13)、γ-干扰素(IFN-γ)]水平。结果表明,早期消化道摄入小麦水解肽可显著提高幼鼠胸腺指数及脾脏指数;使血清特异性IgE水平与特异性IgG1水平显著降低(P<0.01);使脾脏IL-4水平(P<0.05)与IL-13水平显著降低(P<0.01);使脾脏IFN-γ水平显著升高(P<0.01);使幼鼠直肠温度显著回升(P<0.01)。早期消化道摄入益生菌与小麦水解肽混合物,显著抑制了辅助型T细胞2(Th2)型反应偏移,IL-5水平、Th2/Th1比值显著降低;对空肠绒毛断裂、隐窝深度变浅、绒毛高度变低等空肠病理现象缓解效果明显。综上所述,小麦水解肽与益生菌协同小麦水解肽混合物具有预防幼鼠小麦过敏的潜力,有望用于开发预防婴幼儿小麦过敏的特殊医学用途配方食品。

    Abstract:

    In order to compare the preventive effects of wheat hydrolyzed peptide as well as probiotics and their mixtures on wheat allergy in young mice, and to assess whether there is a synergistic effect between probiotics and wheat hydrolyzed peptide, a wheat allergy model was established by observing the body mass, rectal temperature, visceral index, and jejunum pathological sections of the young mice, and detecting the levels of their serum-specific immunoglobulin E (IgE) and specific immunoglobulin G1 (IgG1), specific immunoglobulin G2a (IgG2a) levels, and their spleen cytokine interleukin 4 (IL-4), interleukin 5 (IL-5), interleukin 13 (IL-13), and gamma-interferon (IFN-γ) levels were determined. The results showed that early digestive intake of wheat hydrolyzed peptides significantly increased the thymus index and spleen index of young rats; significantly decreased the serum specific IgE level and specific IgG1 level (P < 0.01); significantly decreased the spleen IL-4 level (P < 0.05) and IL-13 level (P < 0.01); significantly increased the spleen IFN-γ level (P < 0.01); and significantly rebounded the rectal temperature of young rats (P < 0.01); significantly rebound rectal temperature in young rats (P < 0.01). Early digestive tract intake of probiotics and wheat hydrolyzed peptide mixture significantly inhibited the shifting of helper T-cell 2 (Th2) type response, with significant reduction of IL-5 level and Th2/Th1 ratio; and had a significant effect on the alleviation of jejunal pathology, such as jejunal villus breakage, shallow depth of crypt, and low height of villi. In conclusion, the synergistic wheat hydrolyzed peptide and probiotic wheat hydrolyzed peptide mixture has the potential to prevent wheat allergy in young mice, and it is expected to be used in the development of formulas for special medical purposes to prevent wheat allergy in infants and young children.

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曾冰蕙,刘羽嘉,杜航,李博雅,车会莲.益生菌协同小麦水解肽预防幼鼠小麦过敏[J].中国食品学报,2024,24(8):236-246

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  • 收稿日期:2023-08-11
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  • 在线发布日期: 2024-09-26
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