Assessment of periportal fibrosis in Schistosomiasis mansoni patients by proton nuclear magnetic resonance-based metabonomics models

Table 2 Metabolites responsible for discrimination between mild from significant periportal fibrosis of 41 patients with Schistosomiasis mansoni, Pernambuco, Brazil, 2020

Metabolite	Chemical shift (δ/ppm)	Metabonomics formalism	Higher serum level
Valine	1.030	OPLS-DA	Mild PPF
No identified	1.046	OPLS-DA	Mild PPF
Alanine	1.446 and 1.502	PLS-DA and OPLS-DA	Significant PPF
N-acetylglucosamine	1.975 up to 2.011	PLS-DA	Significant PPF
Glycolaldehyde	3.492	PLS-DA	Significant PPF
Carbohydrates	3.544; 3.692; and 3.808	PLS-DA and OPLS-DA	Mild PPF

OPLS-DA: Orthogonal projections to latent structures discriminant analysis; PLS-DA: Partial least squares-discriminant analysis; PPF: Periportal fibrosis.