Effect of the course of treatment with broad-spectrum antibiotics on intestinal flora and short-chain fatty acids in feces of very low birth weight infants: a prospective study

SUN Qian; WANG Zheng-Li; LIU Xiao-Chen; JI Yan-Chun; HE Yu; AI Qing; LI Lu-Quan

doi:10.7499/j.issn.1008-8830.2107103

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Chinese Journal of Contemporary Pediatrics ›› 2021, Vol. 23 ›› Issue (10) : 1008-1014. DOI: 10.7499/j.issn.1008-8830.2107103

CLINICAL RESEARCH

Effect of the course of treatment with broad-spectrum antibiotics on intestinal flora and short-chain fatty acids in feces of very low birth weight infants: a prospective study

SUN Qian, WANG Zheng-Li, LIU Xiao-Chen, JI Yan-Chun, HE Yu, AI Qing, LI Lu-Quan

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Abstract

Objective To study the effect of the course of treatment with broad-spectrum antibiotics on intestinal flora and short-chain fatty acids (SCFAs) in feces of very low birth weight (VLBW) infants. Methods A total of 29 VLBW infants who were admitted to the Neonatal Diagnosis and Treatment Center of Children's Hospital Affiliated to Chongqing Medical University from June to December 2020 were enrolled as subjects for this prospective study. According to the course of treatment with broad-spectrum antibiotics, they were divided into two groups: ≤7 days (n=9) and >7 days (n=20). Fecal samples were collected on days 14 and 28 of hospitalization, and 16S rDNA high-throughput sequencing and gas chromatography-mass spectrometry were used to analyze the flora and SCFAs in fecal samples. Results There was a significant reduction in Chao index of the intestinal flora in the ≤7 days group and the >7 days group from week 2 to week 4 (P<0.05). In the ≤7 days group, there were significant increases in the proportions of Firmicutes and Clostridium_sensu_stricto_1 and a significant reduction in the proportion of Proteobacteria from week 2 to week 4 (P<0.05). At week 4, compared with the ≤7 days group, the >7 days group had significant reductions in the proportions of Firmicutes and Clostridium_sensu_stricto_1 and a significant increase in the proportion of Proteobacteria (P<0.05), as well as significant reductions in the content of isobutyric acid and valeric acid (P<0.05). Conclusions The course of treatment with broad-spectrum antibiotics can affect the abundance, colonization, and evolution of intestinal flora and the content of their metabolites SCFAs in VLBW infants. The indication and treatment course for broad-spectrum antibiotics should be strictly controlled in clinical practice.

Key words

Broad-spectrum antibiotics / Intestinal flora / Short-chain fatty acid / Very low birth weight infant

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SUN Qian, WANG Zheng-Li, LIU Xiao-Chen, JI Yan-Chun, HE Yu, AI Qing, LI Lu-Quan. Effect of the course of treatment with broad-spectrum antibiotics on intestinal flora and short-chain fatty acids in feces of very low birth weight infants: a prospective study[J]. Chinese Journal of Contemporary Pediatrics. 2021, 23(10): 1008-1014 https://doi.org/10.7499/j.issn.1008-8830.2107103

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