Table 1.

The semi-quantitative estimation of phoenixin-like immunoreactivity (PNX-li) and Smim20 and GPR173 mRNA expression in rat (R), mouse (M), human (H), pig (P), zebrafish (Zf), Scatophagus argus (Sa). −, no expression; +, low expression level; ++, medium expression level; +++, high expression level.

Area	PNX-li	Smim20 mRNA	GPR173 mRNA	Species	Publications
Central nervous system
Hypothalamus (without nucleus division)	+++	+++	+++	Sa, R, Zf	[17,19,21,22,23,24]
Periventricular Nucleus	+++		+++	R	[3,4]
Paraventricular Nucleus	+++		++	R	[3,4,12]
Zona Incerta	++			R	[3]
Ventromedial Hypothalamus	++		+++	R	[3,4,12]
Supraoptic Nucleus	+++		+++	R	[3,4,18,25,26]
Lateral Hypothalamus	++		++	R	[3,4,12]
Substantia Nigra	++			R	[3]
Edinger–Westphal Nucleus	++			R	[3]
Nucleus Tractus Solitarius	++			R	[3,13,18]
Central Amygdaloid Nucleus	+++		+++	R	[4,18,26]
Arcuate Nucleus	+		++	R	[4,18,26]
Raphe Pallidus	+			R	[18,26]
Area Postrema	++			R	[18]
Median Eminence	++			R	[3]
Pituitary	++			Sa	[3,21]
Anterior Pituitary Lobe	+			R	[3]
Posterior Pituitary Lobe	+			R	[3]
Cerebrum	+			R	[3]
Pons	+			R	[3]
Spinal Cord	+++			R, M, P	[13,18,26,27]
Dorsal Root Ganglion	+++			R, M	[13,15]
Peripheral tissues
Heart	+++	++		R, Sa, Zf	[3,13,17,21,23]
Thymus	++			R	[3]
Lung	++			R	[3]
Gill	+	+		Sa, Zf	[21,23]
Oesophagus	++			R	[3]
Stomach	++			R, Sa	[3,21]
Duodenum	++	++		R, Zf	[3,18,23]
Jejunum	+++			R	[3,18]
Ileum	++			R	[3,18]
Colon	−/+			R	[3,18]
Pancreas	++			R	[3,8,18]
Liver		++		Zf	[23]
Adipocytes	++	++	++	R, M	[7,19]
Kidney	++			R, Sa	[3,21]
Spleen	++			R, Sa	[3,21]
Ovary	++	++	++	H, Sa, R, Zf	[20,21,23,24]
Ovarian follicles	++	++	++	H, R	[19,20]
Testis	+	+		Sa, R, Zf	[17,21,23]
Muscle	+			R, Sa	[21,28]
Skin	++	++		M, Zf	[15,23]