肠道菌的色氨酸代谢与急性放射性肠损伤诊治的研究进展

doi:10.3760/cma.j.cn113030-20201026-00516

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Abstract Gut microbiota not only affects the activity of tryptophan metabolism rate limiting enzymes in intestinal cells, but also cooperatively produces a variety of catalytic enzymes, which directly affects the type and quantity of tryptophan metabolites in the intestine. Multiple tryptophan‐associated indole compounds originating from the gut microbiome are significantly decreased in the peripheral blood of mice, and negatively correlated with radiation dose ranging from 2 to 10.4 Gy, which might be biomarkers for acute radiation‐induced intestinal injury. Recent studies have reported that indole 3‐propionic acid (IPA), indole‐3‐carboxaldehyde (I3A) and kynurenic acid (KYNA), which are tryptophan catabolites derived from gut microbiota, aryl hydrocarbon receptor, which is one of the receptors for tryptophan catabolites, and inhibition of indoleamine 2,3 dioxygenase‐1, which is a main rate‐limiting enzyme in intestinal tryptophan catabolism, can protect against radiation‐induced intestinal toxicity. A more comprehensive understanding of the dynamics of tryptophan catabolites and their roles in acute radiation‐induced intestinal injury is needed to deepen the understanding of the pathogenesis in radiation‐induced intestinal injury and exploration of effective diagnostic and therapeutic approaches.

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	Zhao Tianshu
	Cai Shang
	Tian Ye

Key words： Acute radiation‐induced intestinal injury Gut microbiota Tryptophan catabolism Diagnosis Treatment

Received: 26 October 2020

Fund:Jiangsu Provincial Key Project (BE2018657); Jiangsu Medical Innovation Team (CXDT‐37); Medicine Outstanding Leader of Suzhou (62)

Corresponding Authors: Tian Ye, Email: dryetian@126.com

Cite this article:

Zhao Tianshu,Cai Shang,Tian Ye. Research progress on tryptophan metabolism involved by gut microbiota in the diagnosis and treatment of acute radiation‐induced intestinal injury[J]. Chinese Journal of Radiation Oncology, 2022, 31(8): 750-753.

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http://journal12.magtechjournal.com/Jweb_fszlx/EN/10.3760/cma.j.cn113030-20201026-00516 OR http://journal12.magtechjournal.com/Jweb_fszlx/EN/Y2022/V31/I8/750

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