维生素C缺乏对成骨障碍大鼠的影响:对酸味偏好、舔食率、鼓索神经反应和味觉传导元件的影响。

IF 2.8 4区 心理学 Q1 BEHAVIORAL SCIENCES
Toshiaki Yasuo, Fumihiko Nakamura, Takeshi Suwabe, Noritaka Sako
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引用次数: 0

摘要

动物用酸味来避免变质的食物,并选择含有维生素和矿物质的食物。探讨维生素C(抗坏血酸)过程中对酸味物质的反应;我们对缺乏AA合成能力的成骨障碍大鼠Shionogi/Shi Jcl-od/od进行了行为学、神经学、解剖学和分子生物学实验。AA缺乏时大鼠的3 mM柠檬酸和10 mM AA偏好评分高于补充时。酸味溶液[AA、柠檬酸、乙酸、酒石酸和盐酸]的舔食率在AA缺乏期间与缺乏前后相比显著增加。通过记录鼓室索神经来评价aa缺乏和aa充足大鼠的有机酸味觉反应。aa缺乏大鼠对柠檬酸、乙酸和酒石酸的神经反应明显减弱。aa缺乏大鼠的单位面积蕈状乳头味蕾数量与饱食大鼠无显著差异。然而,在aa缺失大鼠的菌状乳头味蕾细胞中,Gnat3 (NM_173139.1)、Trpm5 (NM_001191896.1)、Tas1r1 (NM_053305.1)、Car4 (NM_019174.3)和Gad1 (NM_017007.1)的mRNA表达量显著低于aa缺失大鼠。我们的数据表明,AA缺乏降低了对酸的回避,减少了鼓室索神经对酸的反应。AA缺乏可下调真菌状乳头味蕾细胞中部分味觉相关基因的表达。然而,结果也表明,真菌状乳头味蕾细胞中一些假定的酸味受体的mRNA表达不受AA缺乏的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Vitamin C deficiency in osteogenic disorder Shionogi/Shi Jcl-od/od rats: effects on sour taste preferences, lick rates, chorda tympani nerve responses, and taste transduction elements.

Animals use sour taste to avoid spoiled food and to choose foods containing vitamins and minerals. To investigate the response to sour taste substances during vitamin C (ascorbic acid; AA) deficiency, we conducted behavioral, neural, anatomical, and molecular biological experiments with osteogenic disorder Shionogi/Shi Jcl-od/od rats, which lack the ability to synthesize AA. Rats had higher 3 mM citric acid and 10 mM AA preference scores when AA-deficient than when replete. Licking rates for sour taste solutions [AA, citric acid, acetic acid, tartaric acid, and HCl] were significantly increased during AA deficiency relative to pre- and postdeficiency. Chorda tympani nerve recordings were conducted to evaluate organic acid taste responses in the AA-deficient and replete rats. Nerve responses to citric acid, acetic acid, and tartaric acid were significantly diminished in AA-deficient rats relative to replete controls. There was no significant difference in the number of fungiform papillae taste buds per unit area in the AA-deficient rats relative to the replete rats. However, mRNA expression levels of Gnat3 (NM_173139.1), Trpm5 (NM_001191896.1), Tas1r1 (NM_053305.1), Car4 (NM_019174.3), and Gad1 (NM_017007.1) in fungiform papillae taste bud cells from AA-deficient rats were significantly lower than those in replete rats. Our data suggest that AA deficiency decreases avoidance of acids and reduces chorda tympani nerve responses to acids. AA deficiency downregulates some taste-related genes in fungiform papillae taste bud cells. However, the results also reveal that the mRNA expression of some putative sour taste receptors in fungiform papillae taste bud cells is not affected by AA deficiency.

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来源期刊
Chemical Senses
Chemical Senses 医学-行为科学
CiteScore
8.60
自引率
2.90%
发文量
25
审稿时长
1 months
期刊介绍: Chemical Senses publishes original research and review papers on all aspects of chemoreception in both humans and animals. An important part of the journal''s coverage is devoted to techniques and the development and application of new methods for investigating chemoreception and chemosensory structures.
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