Multi-Solvent Extraction Procedure for the Pioneer Fecal Metabolomic Analysis—Identification of Potential Biomarkers in Stable Kidney Transplant Patients
Soumaya Kouidhi,
Nessrine Souai,
Muhanad Alhujaily,
Oumaima Zidi,
Ameni Kochbati,
Alaeddine Redissi,
Tareg M. Belali,
Imene El Kossai,
Jamelddine El Manaa,
Ameur Cherif,
Wissem Mnif,
Amor Mosbah
Affiliations
Soumaya Kouidhi
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Nessrine Souai
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Muhanad Alhujaily
Department of Clinical Laboratory, College of Applied Medicine, University of Bisha, P.O. Box 551, Bisha 61922, Saudi Arabia
Oumaima Zidi
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Ameni Kochbati
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Alaeddine Redissi
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Tareg M. Belali
Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil, Bisha 67714, Saudi Arabia
Imene El Kossai
Unit of Organ Transplant, Military Training Hospital, Tunis 1008, Tunisia
Jamelddine El Manaa
Unit of Organ Transplant, Military Training Hospital, Tunis 1008, Tunisia
Ameur Cherif
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Wissem Mnif
Department of Chemistry, Faculty of Sciences and Arts in Balgarn, University of Bisha, P.O. Box 199, Bisha 61922, Saudi Arabia
Amor Mosbah
LBVBGR_LR11ES31, High Institute of Biotechnology of Sidi Thabet, University of Manouba, Ariana 2020, Tunisia
Metabolic alteration plays a functional role in kidney allograft complications. Metabolomics is a promising high-throughput approach in nephrology but is still limited by the lack of overlap in metabolite coverage. We performed an untargeted fecal metabolomic analysis of forty stable kidney allograft recipients and twenty non-transplant controls. First, we applied the ultra-high performance liquid chromatography (UHPLC) analysis coupled with the Diod Array detector. The potential biomarkers were then collected and identified by gas chromatography-mass spectrometry (GCMS). In order to allow for complete coverage of the fecal polar and non-polar metabolites, the performance of five organic solvents with increasing polarity was investigated successively. UHPLC analysis revealed that the fecal metabolite profiles following the five extractions were significantly different between controls and kidney allografts. GC-MS analysis showed that the best predictors’ metabolites belonged mainly to long-chain fatty acids, phenolic compounds, and amino acids. Collectively, our results showed the efficiency of our pioneer method to successfully discriminate stable kidney-transplant recipients from controls. These findings suggest that distinct metabolic profiles mainly affect fatty acid biosynthesis and amino acid metabolism. In such a context, the novel insights into metabolomic investigation may be a valuable tool that could provide useful new relevant biomarkers for preventing kidney transplant complications.
