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. 2010 Jun;160(3):423–442. doi: 10.1111/j.1476-5381.2010.00787.x

Table 1.

Regional brain tissue eCB levels in experimentally naïve rats

Region AEA (pmol·g1) 2-AG (nmol·g1) Citations (n) Footnote
Whole brain 19 (11–28) 12 (3–37) 4 1
Hindbrain (rhombencephalon)
Brainstem 52 (22–87) 9 (2–14) 4 2
Cerebellum 19 (8–35) 9 (2–20) 9 3
Pons medulla 13 21 1 4
Medulla 45 11 1 5
RVM 62 3 1 6
Midbrain (mesencephalon) 27 (11–47) 12 (4–24) 8 7
Dorsal raphe 57 (56–57) 6 (6–6) 2 8
Periaqueductal grey 43 (8–72) 9 (2–21) 3 9
Ventral mesencephalom 10 19 1 10
Ventral tegmental area 68 8 1 11
Interbrain (diencephalon) 16 (10–21) 5 (2–8) 4 12
Hypothalamus 24 (9–46) 15 (3–30) 8 13
MB hypothalamus 60 5 1 14
Pituitary 12 12 1 15
Anterior pituitary 50 11 1 16
Thalamus 20 (13–30) 11 (6–18) 4 17
Cerebrum (telencephalon)
Amygdala 43 (25–53) 13 (2–27) 3 18
Striatum 41 (17–76) 8 (1–18) 10 19
Caudate putamen 42 (17–72) 6 (1–14) 6 20
Nucleus accumbens 31 (15–65) 11 (2–23) 4 21
Globus pallidus 87 (17–198) 6 (1–11) 3 22
Substantia nigra 35 (22–49) 16 (12–19) 2 23
SNr 214 1 1 24
Cortex 20 (13–39) 10 (1–35) 8 25
Frontal cortex 15 (5–25) 17 (11–22) 2 26
Prefrontal cortex 26 (17–38) 7 (1–12) 5 27
mPFC 29 5 1 28
ACC 25 3 1 29
Entorhinal cortex 55 12 1 30
Occipital cortex 17 19 1 31
Hippocampus 44 (12–84) 10 (1–40) 11 32
Dorsal hippocampus 47 7 1 33
Ventral hippocampus 51 11 1 34
Limbic structures 34 (21–54) 8 (4–12) 6 35

eCB levels in brain tissue from experimentally naïve rats expressed as average literature value, with the range in parenthesis. When necessary, some values were calculated by measurement of reported graphs.

2-AG, 2-arachidonoylglycerol; AEA, anandamide, N-arachidonoyl-ethanolamine; eCB, endocannabinoid.