1. Clinical Use of CSF Neurotransmitters
Lance H. Rodan, MD, K. Michael Gibson, PhD, Phillip L. Pearl, MD 
Pediatric Neurology 
Volume 53, Issue 4, Pages (October 2015)
DOI: /j.pediatrneurol
Copyright © 2015 Elsevier Inc. Terms and Conditions

2. Figure 1
Monoamine synthesis pathway. Metabolic pathways of biogenic monoamine neurotransmitters. AADC, aromatic-L-amino acid decarboxylase; ALDH, aldehyde dehydrogenase, BH2, quinonoid dihydrobiopterin; BH4, tetrahydrobiopterin; COMT, catechol-O-methyltransferase; DBH, dopamine β-hydroxylase; GTP, guanosine triphosphate; ; GTPCH1, GTP-cyclohydrolase I; 5-HIAA, 5-hydroxyindoleacetic acid; 5-HTP, 5 hydroxytryptophan; HVA, homovanillic acid; MAO, monoamine oxidase; MHPG, 3-methoxy-4-hydroxyphenylglycol; PNMT, phenylethanolamine N-methyltransferase; Trp OHase, tryptophan hydroxylase; Tyr OHase, tyrosine hydroxylase; VMA, vanillylmandelic acid.
Pediatric Neurology  , DOI: ( /j.pediatrneurol )
Copyright © 2015 Elsevier Inc. Terms and Conditions

3. Figure 2 Gamma aminobutyric acid (GABA) metabolic pathway.
Pediatric Neurology  , DOI: ( /j.pediatrneurol )
Copyright © 2015 Elsevier Inc. Terms and Conditions

4. Figure 3
Serine synthesis pathway. (The color version of this figure is available in the online edition.)
Pediatric Neurology  , DOI: ( /j.pediatrneurol )
Copyright © 2015 Elsevier Inc. Terms and Conditions