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. 2022 Mar 25;12(4):501. doi: 10.3390/biom12040501

Table 2.

Polyamine concentrations in brain and body fluids.

Arg PUT NAc-PUT ref. SPD NAc-SPD ref. SPM NAc-SPM Reference
serum 80 µM 100 nM (4) 130 nM (4) 40 nM (4)
130 nM (3) 400 nM (3) 50 nM (3)
320 nM (1) 35 nM (5)
60 nM 2.5 nM (8) 4.0 nM (8) 43 nM (8)
cerebrospinal fluid 180 nM (2) 150 nM (2) 90 nM (2)
230 nM (6) 120 nM (6) 140 nM (6)
brain extracellular space 750 nM (5) 420 nM (5) 480 nM (5)
cytoplasm (fibroblasts) 29 µM (4) 159 µM (4) 635 µM (4)
cytoplasm (ascites cells) 43 µM (4) 430 µM (4) 602 µM (4)
hepatocytes 1150 µM (9) 880 µM (9)
brain (Müller cells) 800 µM (7)
urine 60.2 nM 2.5 nM (8) 4.0 1.7 nM (8) 43.1 nM 1.3 nM (8)
daily loss 90.3 nmoles 3.7 nmoles (8) 6.0 nmoles 2.5 nmoles (8) 64.6 nmoles 1.9 nmoles (8)
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