5α-DHA	5α-Androstane-3,17-dione
5α-DHT	5α-Dihydrotestosterone
3α,5α-THA	Androsterone
3β,5α-THA	Epiandrosterone
3α,5β-THA	Etiocholanolone
3α,5β-THA	Epietiocholanolone
5-HT3	Type-3 5-Hydroxytryptamine receptor (serotonin receptor)
8-iso-PGF2α	8-iso-Prostaglandin F2α
σ1R	σ1-Receptor
A	Androstenedione
AD	Androstanediol
ADIOL	Androstenediol
AKR1C1	Aldo-keto reductase family 1 member C1
AKR1C2	Aldo-keto reductase family 1 member C2
AKR1C3	Aldo-keto reductase family 1 member C3
AKR1D1	5β-Reductase
ALLO	3α,5α-Tetrahydroprogesterone, allopregnanolone
AMPA	α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid
AMPAR	AMPA receptor
ANOVA	Analysis of variance
AT	Androstenetriol (5-androstene)
CI	Confidence interval
C	Conjugated steroid
C+U	Conjugated + unconjugated steroids
CLCN3	Chloride voltage-gated channel 3
CNS	Central nervous system
CYP11A1	Cholesterol desmolase
CYP11B1	11β-Hydroxylase
CYP17A1	C17-hydroxylase-C17,20-lyase
CYP19A1	Aromatase
CYP21A2	21-Hydroxylase
CYP3A4	Cytochrome P450 3A4
CYP3A7	Cytochrome P450 3A7
CYP7B1	7α-hydroxylase
HSD3B1	Type 1 3β-Hydroxysteroid dehydrogenase
HSD3B2	Type 2 3β-Hydroxysteroid dehydrogenase
HSD3Bs	Type 1 and 2 3β-Hydroxysteroid dehydrogenases
HSD11B1	Type 1 11β-Hydroxysteroid dehydrogenase
HSD11B2	Type 2 11β-Hydroxysteroid dehydrogenase
HSD17B2	Type 2 17β-Hydroxysteroid dehydrogenase
HSD17B3	Type 3 17β-Hydroxysteroid dehydrogenase
HSD17B6	Type 6 17β-Hydroxysteroid dehydrogenase (3α/β epimerase)
DHEA	Dehydroepiandrosterone
DHEAS	Dehydroepiandrosterone sulfate
DHP	Dihydroprogesterone
FEP	First-episode patient
GABA	γ-Aminobutyric acid
GABAAR	Type A γ-aminobutyric acid receptor
GC-MS/MS	Gas chromatography tandem mass spectrometry
HC	Healthy control
HPA	Hypothalamic-pituitary adrenal
IL-6	Interleukin 6
IL-17	Interleukin 17
L-type VGCC	L-type voltage gated calcium channels
LLR	Logarithm of likelihood ratio
LSD	Least significant difference
MC	LSD multiple comparisons
mRNA	Messenger ribonucleic acid
NAS	Neuroactive steroid
NMDAR	N-methyl-D-aspartate receptor
OPLS	Orthogonal predictions to latent structure
P	Progesterone
PD	Pregnanediol
PGF2α	Prostaglandin F2α
PNS	Peripheral nervous system
PREG	Pregnenolone
PREGS	Pregnenolone sulfate
PT	Pregnanetriol
ROS	Reactive oxygen species
SRD5A1	Type 1 5α-reductase
SRD5A2	Type 2 5α-reductase
SULT2A1	Steroid sulfotransferase type 2A1
STS	Steroid sulfatase
T	Testosterone
THP	Tetrahydroprogesterone
TNFα	Tumor necrosis factor α
TRPC5	Short transient receptor potential channels 5
TRPV1	Vanilloid receptor
TRPM3	Melastatin receptor