SU Gang,YANG Guangyong,HAN Xue,et al.Effect of Gegen Qinliantang on Fecal Short-chain Fatty Acids in Rats with Antibiotic-associated Diarrhea Based on Targeted Metabonomics[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(07):189-196.
SU Gang,YANG Guangyong,HAN Xue,et al.Effect of Gegen Qinliantang on Fecal Short-chain Fatty Acids in Rats with Antibiotic-associated Diarrhea Based on Targeted Metabonomics[J].Chinese Journal of Experimental Traditional Medical Formulae,2024,30(07):189-196. DOI: 10.13422/j.cnki.syfjx.20240161.
Effect of Gegen Qinliantang on Fecal Short-chain Fatty Acids in Rats with Antibiotic-associated Diarrhea Based on Targeted Metabonomics
To explore the impact of Gegen Qinliantang(GQT) on the fecal short-chain fatty acids(SCFAs) metabolism in antibiotic-associated diarrhea(AAD) through targeted metabolomics.
Method
2
A total of 240 SD rats were randomly divided into six groups(
n
=40, half male and half female), including blank group, model group, bifidobiogen group(0.15 g·kg
-1
), and GQT high-, medium-, and low-dose groups(10.08, 5.04, 2.52 g·kg
-1
), except for the blank group, clindamycin(250 mg·kg
-1
) was given to all groups by gavage for modeling every day for 7 d. After successful modeling, each administered group was gavaged with the corresponding dose of the drug, and the blank and model groups were gavaged with an equal volume of normal saline solution, 1 time/d, for 14 d. At 0, 3, 7, 14 d after the drug intervention, eight rats were randomly selected from each group, respectively. Gas chromatography-time-of-flight mass spectrometry(GC-TOF-MS) was used to perform targeted metabolomic analysis of SCFAs in the feces of rats, and partial least squares-discriminant analysis(PLS-DA) was applied to compare the differences in metabolic profiles between groups at different treatment times, and to compare the changes in the contents of SCFAs in rat feces between groups.
Result
2
PLS-DA results showed that the blank group could be clearly distinguishable from the model group, with GQT exhibiting a closer proximity to the blank group after 7 d of treatment. After further analyzing the composition of SCFAs, it was found that the proportion of acetic acid increased and the proportions of butyric acid, valeric acid, hexanoic acid and isovaleric acid decreased in the model group compared with the blank group. After the treatment with GQT, the proportions of butyric acid, isobutyric acid, valeric acid, and isovaleric acid increased, and the proportions of acetic acid, propionic acid and caproic acid decreased. Subsequent differential analysis revealed that GQT could significantly improve the content of butyric acid, and had a certain retrogressive effect on the contents of valeric acid and hexanoic acid.
Conclusion
2
The medium dose group of GQT can improve the contents of SCFAs in AAD feces after 7 days of treatment, which may be related to the improvement of the composition ratio of SCFAs and the contents of butyric acid, valeric acid and caproic acid.
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