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PLoS One

Title:		Microbiota and metabolome associated with immunoglobulin A nephropathy (IgAN)
Author(s):		De Angelis M; Montemurno E; Piccolo M; Vannini L; Lauriero G; Maranzano V; Gozzi G; Serrazanetti D; Dalfino G; Gobbetti M; Gesualdo L;
Address:		"Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, Bari, Italy. Department of Emergency and Organ Transplantation, Nephrology Unit - University of Bari Aldo Moro, Bari, Italy. Department of Agricultural and Food Sciences, University of Bologna, Bologna, Italy. Inter-departmental Centre for Industrial Agri-Food Research, University of Cesena, Cesena, Italy"
Journal Title:		PLoS One
Year:		2014
Volume:		20140612
Issue:		6
Page Number:		e99006 -
DOI:		10.1371/journal.pone.0099006
ISSN/ISBN:		1932-6203 (Electronic) 1932-6203 (Linking)
Abstract:		"This study aimed at investigating the fecal microbiota, and the fecal and urinary metabolome of non progressor (NP) and progressor (P) patients with immunoglobulin A nephropathy (IgAN). Three groups of volunteers were included in the study: (i) sixteen IgAN NP patients; (ii) sixteen IgAN P patients; and (iii) sixteen healthy control (HC) subjects, without known diseases. Selective media were used to determine the main cultivable bacterial groups. Bacterial tag-encoded FLX-titanium amplicon pyrosequencing of the 16S rDNA and 16S rRNA was carried out to determine total and metabolically active bacteria, respectively. Biochrom 30 series amino acid analyzer and gas-chromatography mass spectrometry/solid-phase microextraction (GC-MS/SPME) analyses were mainly carried out for metabolomic analyses. As estimated by rarefaction, Chao and Shannon diversity index, the lowest microbial diversity was found in P patients. Firmicutes increased in the fecal samples of NP and, especially, P patients due to the higher percentages of some genera/species of Ruminococcaceae, Lachnospiraceae, Eubacteriaceae and Streptococcaeae. With a few exceptions, species of Clostridium, Enterococcus and Lactobacillus genera were found at the highest levels in HC. Bacteroidaceae, Porphyromonadaceae, Prevotellaceae and Rikenellaceae families differed among NP, P and HC subjects. Sutterellaceae and Enterobacteriaceae species were almost the highest in the fecal samples of NP and/or P patients. Compared to HC subjects, Bifidobacterium species decreased in the fecal samples of NP and P. As shown by multivariate statistical analyses, the levels of metabolites (free amino acids and organic volatile compounds) from fecal and urinary samples markedly differentiated NP and, especially, P patients"
Keywords:		"Adult Case-Control Studies Female Glomerulonephritis, IGA/*microbiology Humans Male *Metabolome *Microbiota Middle Aged;"
Notes:		"MedlineDe Angelis, Maria Montemurno, Eustacchio Piccolo, Maria Vannini, Lucia Lauriero, Gabriella Maranzano, Valentina Gozzi, Giorgia Serrazanetti, Diana Dalfino, Giuseppe Gobbetti, Marco Gesualdo, Loreto eng Research Support, Non-U.S. Gov't 2014/06/13 PLoS One. 2014 Jun 12; 9(6):e99006. doi: 10.1371/journal.pone.0099006. eCollection 2014"