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Back研究發現發炎性腸道疾病患者腸道草酸代謝異常,與免疫反應相關
研究發現發炎性腸道疾病患者腸道草酸代謝異常,與免疫反應相關
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自由时报2 hours agoHealth2 min readChinaView translation

研究發現發炎性腸道疾病患者腸道草酸代謝異常,與免疫反應相關

Quick Look

北卡羅來納大學研究團隊發現,克隆氏症與潰瘍性結腸炎患者腸道中負責草酸運輸的SLC26A2與SLC26A3蛋白基因活性較低,導致草酸在腸道累積並可能提升發炎反應,實驗顯示草酸攝取會加重小鼠腸道發炎與體重下降,但研究尚未建議一般人避免食用菠菜等富草酸食物。

AI-generated summary

Why It Matters

菠菜、甜菜根、杏仁、地瓜等植物性食物含有天然草酸,部分發炎性腸道疾病患者可能無法有效處理草酸,導致腸道累積並與發炎反應相關。

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2026/10/03 14:28

菠菜等植性食物含有天然草酸,最新研究探討草酸代謝與發炎性腸道疾病之間的關聯。(資料照)

〔編譯陳成良/綜合報導〕菠菜、甜菜根、杏仁、地瓜等常被視為健康食物,但一項最新研究發現,部分發炎性腸道疾病患者可能無法有效處理這些植物性食物中的某種天然物質,讓它在腸道累積,並與發炎反應有關。

科學網站《Science Alert》報導,北卡羅來納大學研究團隊針對天然存在於植物性食物中的草酸(oxalate)展開研究,結果發現克隆氏症(Crohn's disease)患者與健康者攝取的植物性食物量相近,但前者糞便中的草酸濃度較高,顯示問題可能不只是「吃了多少」,而是腸道處理草酸的方式不同。

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關鍵不只在吃多少

研究團隊分析46名受試者的飲食與糞便,並檢視數百份腸道組織樣本。結果發現,克隆氏症及潰瘍性結腸炎患者的腸道組織中,負責吸收草酸的SLC26A2與SLC26A3運輸蛋白相關基因活性較低,可能使草酸較難被有效移除。

研究也以腸道發炎的小鼠進行實驗。餵食額外草酸後,小鼠體重下降更明顯,腸道發炎持續更久,存活情況也較差。研究人員進一步在實驗室觀察小鼠免疫細胞,發現草酸會提高發炎反應,線索指向免疫作用,而不只是草酸直接損傷腸道組織。

研究團隊接著檢查腸道中的SLC26A2與SLC26A3運輸蛋白,這2種蛋白可協助把腸道中的草酸吸收進腸道細胞。在數百份克隆氏症、潰瘍性結腸炎與健康者的腸道組織樣本中,研究人員發現,製造這2種蛋白的相關基因活性,在發炎性腸道疾病患者樣本中較低。

研究成果刊登於《細胞與分子腸胃肝病學》期刊。研究團隊並未建議一般人因此停吃菠菜、杏仁等植物性食物,目前結果仍主要來自患者資料、小鼠與細胞實驗,哪些患者對草酸較敏感,以及調整草酸攝取能否改善病情,仍需更大規模研究確認。

What to Watch

AI outlook — possibilities, not facts

  • 未來將進行更大規模研究以確認哪些患者對草酸較敏感,以及飲食調整是否能改善發炎性腸道疾病病情

    Likely · Within months

Open Questions

  • 哪些發炎性腸道疾病患者對草酸較敏感?
  • 調整草酸攝取是否能改善患者病情?
  • SLC26A2與SLC26A3基因活性降低的具體機制是什麼?

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This article was originally published by 自由时报.

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