Table 6.

Differentially regulated metabolites in patients with PTL without IAI who delivered preterm (Second study).

Increase		Decrease
Carbohydrates	Others	Amino Acids	Carbohydrates	Others
Hexose cluster 6	Urocanic acid	Alanine	Galactose	Urea
Dulcitol	Possible N-Acetyl glutamine	Pyroglutamic acid	Hexose cluster 5	3-hydroxybutanoic acid
	1-methyladenine	Proline	Hexose cluster 3	Palmitate
	Butanoic acid	Glycine	Mannose	Octadecanoic acid
	Beta hydroxyphenylethyamine	Glutamine	Inositol	Butanedioic acid
	Vitamin B6
	Salicylamide
	Oleic acid
	Unknown 128
	Unknown 276
	Unknown 285
	Unknown 283
	Unknown 123
	Unknown 344