TABLE 5.
Concentrations of lysophospholipid species in biological samples (pmol/mg for tissues and pmol/µl for plasma or serum)
| LysoPGs | 1-acyl-lysoPG or 2-acyl-lysoPG | Brain | Heart | Lung | Liver | Spleen | Kidney | Plasma | Serum | 
| LPA (16:0) | 1-acyl | 0.44 ± 0.14 | 1.18 ± 0.25 | 0.10 ± 0.03 | 1.36 ± 0.19 | NQ | 0.67 ± 0.08 | ND | ND | 
| 2-acyl | NQ | ND | ND | ND | ND | ND | ND | ND | |
| LPA (18:0) | 1-acyl | 0.12 ± 0.06 | NQ | ND | NQ | ND | NQ | ND | ND | 
| 2-acyl | ND | ND | ND | ND | ND | ND | ND | ND | |
| LPA (18:1) | 1-acyl | 0.48 ± 0.12 | 0.28 ± 0.02 | ND | 0.11 ± 0.05 | ND | NQ | ND | ND | 
| 2-acyl | NQ | ND | ND | NQ | ND | ND | ND | ND | |
| LPA (18:2) | 1-acyl | ND | 0.15 ± 0.08 | ND | 0.29 ± 0.05 | ND | NQ | ND | 0.11 ± 0.06 | 
| 2-acyl | ND | ND | ND | ND | ND | ND | ND | ND | |
| LPA (20:4) | 1-acyl | 0.15 ± 0.04 | ND | ND | ND | ND | ND | ND | NQ | 
| 2-acyl | NQ | ND | ND | ND | ND | ND | ND | NQ | |
| LPA (22:6) | 1-acyl | ND | ND | ND | ND | ND | ND | ND | ND | 
| 2-acyl | NQ | ND | ND | ND | ND | NQ | ND | ND | |
| LPC (14:0) | 1-acyl | NQ | NQ | NQ | NQ | NQ | NQ | NQ | 0.11 ± 0.01 | 
| 2-acyl | NQ | NQ | NQ | NQ | NQ | NQ | NQ | NQ | |
| LPC (16:0) | 1-acyl | 5.02 ± 0.42 | 8.99 ± 0.50 | 32.25 ± 1.08 | 29.37 ± 3.91 | 26.97 ± 1.33 | 26.19 ± 1.71 | 22.24 ± 1.73 | 37.16 ± 2.31 | 
| 2-acyl | 1.18 ± 0.19 | 0.88 ± 0.07 | 3.46 ± 0.11 | 1.27 ± 0.22 | 3.26 ± 0.11 | 3.04 ± 0.33 | 2.57 ± 0.29 | 5.22 ± 0.55 | |
| LPC (16:1) | 1-acyl | NQ | NQ | 0.24 ± 0.02 | 0.25 ± 0.05 | 0.10 ± 0.01 | NQ | 0.26 ± 0.03 | 0.53 ± 0.02 | 
| 2-acyl | NQ | NQ | 0.37 ± 0.04 | NQ | NQ | NQ | NQ | NQ | |
| LPC (18:0) | 1-acyl | 3.64 ± 0.27 | 7.18 ± 0.80 | 18.53 ± 2.47 | 14.56 ± 1.38 | 17.78 ± 1.68 | 17.26 ± 2.08 | 8.35 ± 0.60 | 14.36 ± 1.56 | 
| 2-acyl | 0.12 ± 0.02 | 0.40 ± 0.04 | 1.38 ± 0.19 | 0.71 ± 0.13 | 1.33 ± 0.15 | 1.06 ± 0.11 | 0.65 ± 0.06 | 1.59 ± 0.19 | |
| LPC (18:1) | 1-acyl | 0.92 ± 0.07 | 0.49 ± 0.03 | 1.03 ± 0.02 | 1.54 ± 0.28 | 0.96 ± 0.12 | 1.04 ± 0.06 | 2.02 ± 0.24 | 4.43 ± 0.31 | 
| 2-acyl | 1.74 ± 0.34 | 0.63 ± 0.10 | 1.39 ± 0.19 | 1.99 ± 0.30 | 0.97 ± 0.01 | 1.09 ± 0.07 | 2.00 ± 0.15 | 1.32 ± 0.06 | |
| LPC (18:2) | 1-acyl | NQ | 0.50 ± 0.04 | 1.10 ± 0.14 | 0.71 ± 0.16 | 0.81 ± 0.02 | 0.75 ± 0.06 | 3.93 ± 0.53 | 12.06 ± 0.98 | 
| 2-acyl | 0.10 ± 0.02 | 1.50 ± 0.23 | 2.78 ± 0.17 | 5.06 ± 1.02 | 2.48 ± 0.13 | 3.08 ± 0.20 | 9.55 ± 0.79 | 5.94 ± 0.26 | |
| LPC (18:3) | 1-acyl | NQ | NQ | NQ | NQ | NQ | NQ | NQ | NQ | 
| 2-acyl | NQ | NQ | NQ | NQ | NQ | NQ | NQ | NQ | |
| LPC (20:3) | 1-acyl | NQ | NQ | NQ | NQ | NQ | NQ | NQ | 0.20 ± 0.04 | 
| 2-acyl | NQ | NQ | 0.11 ± 0.04 | 0.28 ± 0.05 | 0.10 ± 0.01 | 0.11 ± 0.01 | 0.18 ± 0.03 | 0.16 ± 0.02 | |
| LPC (20:4) | 1-acyl | NQ | NQ | NQ | ND | NQ | NQ | 0.47 ± 0.13 | 2.13 ± 0.45 | 
| 2-acyl | 0.63 ± 0.19 | 0.36 ± 0.11 | 0.66 ± 0.19 | 2.27 ± 0.53 | 0.79 ± 0.04 | 0.81 ± 0.12 | 1.59 ± 0.34 | 1.27 ± 0.22 | |
| LPC (20:5) | 1-acyl | NQ | NQ | NQ | NQ | NQ | NQ | NQ | 0.33 ± 0.06 | 
| 2-acyl | NQ | NQ | NQ | 0.15 ± 0.04 | NQ | NQ | 0.21 ± 0.04 | 0.17 ± 0.02 | |
| LPC (22:5) | 1-acyl | ND | ND | NQ | NQ | NQ | NQ | NQ | NQ | 
| 2-acyl | NQ | NQ | NQ | 0.15 ± 0.03 | NQ | NQ | NQ | NQ | |
| LPC (22:6) | 1-acyl | NQ | NQ | NQ | NQ | NQ | NQ | 0.25 ± 0.05 | 2.35 ± 0.31 | 
| 2-acyl | 0.45 ± 0.14 | 1.84 ± 0.62 | 0.44 ± 0.04 | 2.05 ± 0.34 | 0.36 ± 0.02 | 2.45 ± 0.18 | 1.23 ± 0.14 | 1.70 ± 0.10 | |
| LPE (16:0) | 1-acyl | 16.70 ± 2.56 | 11.51 ± 2.09 | 40.68 ± 9.13 | 266.21 ± 58.86 | 29.11 ± 0.65 | 46.39 ± 2.97 | 5.20 ± 0.77 | NQ | 
| 2-acyl | ND | ND | ND | ND | ND | ND | ND | ND | |
| LPE (18:0) | 1-acyl | 54.63 ± 18.56 | 23.10 ± 11.01 | 20.80 ± 4.62 | 151.86 ± 30.18 | 34.36 ± 10.37 | 54.91 ± 5.84 | NQ | NQ | 
| 2-acyl | ND | ND | ND | ND | ND | ND | ND | ND | |
| LPE (18:1) | 1-acyl | 10.60 ± 1.48 | NQ | NQ | 116.00 ± 13.05 | NQ | 27.71 ± 2.91 | NQ | NQ | 
| 2-acyl | NQ | ND | ND | ND | ND | ND | ND | ND | |
| LPE (18:2) | 1-acyl | ND | NQ | NQ | 7.84 ± 2.69 | NQ | NQ | NQ | 5.66 ± 0.90 | 
| 2-acyl | ND | NQ | NQ | NQ | NQ | NQ | NQ | ND | |
| LPE (20:4) | 1-acyl | NQ | ND | ND | NQ | ND | ND | ND | 5.17 ± 0.60 | 
| 2-acyl | N.Q. | ND | ND | NQ | NQ | NQ | ND | NQ | |
| LPE (22:6) | 1-acyl | NQ | NQ | ND | NQ | ND | ND | ND | 13.35 ± 2.23 | 
| 2-acyl | NQ | NQ | ND | 6.97 ± 4.51 | NQ | 12.65 ± 5.59 | ND | NQ | |
| LPG (16:0) | 1-acyl | 0.31 ± 0.19 | 1.05 ± 0.37 | 9.81 ± 3.98 | 0.48 ± 0.18 | 0.16 ± 0.02 | 0.83 ± 0.13 | ND | NQ | 
| 2-acyl | 0.59 ± 0.46 | 0.21 ± 0.12 | 0.57 ± 0.21 | 0.13 ± 0.05 | 0.22 ± 0.06 | 0.27 ± 0.05 | ND | NQ | |
| LPG (18:0) | 1-acyl | 0.11 ± 0.03 | 0.20 ± 0.04 | 0.88 ± 0.32 | 0.13 ± 0.05 | N.Q. | 0.12 ± 0.01 | N.D. | N.D. | 
| 2-acyl | 0.19 ± 0.02 | NQ | NQ | NQ | NQ | NQ | ND | ND | |
| LPG (18:1) | 1-acyl | 0.47 ± 0.22 | NQ | 0.40 ± 0.13 | NQ | NQ | NQ | ND | NQ | 
| 2-acyl | 4.32 ± 3.58 | 2.32 ± 0.90 | 2.55 ± 0.38 | 1.21 ± 0.20 | 2.26 ± 0.33 | 1.44 ± 0.36 | NQ | NQ | |
| LPG (18:2) | 1-acyl | NQ | 0.41 ± 0.15 | 0.26 ± 0.11 | 0.31 ± 0.09 | 0.24 ± 0.08 | 0.18 ± 0.07 | NQ | NQ | 
| 2-acyl | 0.52 ± 0.42 | 4.27 ± 1.65 | 3.93 ± 0.99 | 3.09 ± 0.34 | 3.34 ± 0.45 | 2.94 ± 0.76 | NQ | NQ | |
| LPG (20:4) | 1-acyl | ND | ND | ND | ND | ND | ND | ND | ND | 
| 2-acyl | 0.65 ± 0.51 | 0.21 ± 0.11 | 0.29 ± 0.06 | 0.24 ± 0.06 | 0.76 ± 0.18 | 0.22 ± 0.08 | ND | ND | |
| LPG (22:6) | 1-acyl | ND | ND | ND | ND | ND | ND | ND | NQ | 
| 2-acyl | 0.29 ± 0.25 | 0.47 ± 0.13 | 0.78 ± 0.14 | 1.11 ± 0.04 | 0.65 ± 0.10 | 0.71 ± 0.17 | ND | ND | |
| LPI (16:0) | 1-acyl | 3.24 ± 0.85 | 0.73 ± 0.39 | 1.62 ± 0.12 | 26.70 ± 6.52 | 1.17 ± 0.52 | 6.17 ± 1.49 | ND | ND | 
| 2-acyl | 0.11 ± 0.03 | NQ | ND | ND | 0.20 ± 0.05 | 0.98 ± 0.23 | NQ | ND | |
| LPI (18:0) | 1-acyl | 9.72 ± 2.89 | 4.24 ± 1.05 | 1.90 ± 0.34 | 50.53 ± 15.27 | 4.45 ± 1.37 | 29.06 ± 6.42 | NQ | 0.25 ± 0.06 | 
| 2-acyl | ND | ND | ND | ND | ND | ND | ND | NQ | |
| LPI (18:1) | 1-acyl | 3.89 ± 1.36 | 0.83 ± 0.39 | 0.41 ± 0.03 | 21.13 ± 6.15 | 0.54 ± 0.11 | 2.59 ± 0.44 | ND | NQ | 
| 2-acyl | 0.29 ± 0.06 | 0.11 ± 0.05 | 0.20 ± 0.02 | 2.27 ± 0.41 | 0.46 ± 0.03 | 0.51 ± 0.22 | NQ | NQ | |
| LPI (18:2) | 1-acyl | NQ | ND | NQ | ND | NQ | 0.14 ± 0.04 | NQ | 0.46 ± 0.09 | 
| 2-acyl | NQ | 1.43 ± 0.42 | 0.24 ± 0.06 | 15.93 ± 3.35 | 0.63 ± 0.16 | 2.57 ± 0.83 | 0.12 ± 0.03 | 0.17 ± 0.06 | |
| LPI (20:4) | 1-acyl | ND | ND | ND | ND | ND | ND | NQ | 0.54 ± 0.08 | 
| 2-acyl | 1.38 ± 0.44 | 1.75 ± 0.37 | 0.40 ± 0.09 | 14.88 ± 3.15 | 1.08 ± 0.22 | 2.90 ± 1.00 | NQ | 0.19 ± 0.06 | |
| LysoPS (16:0) | 1-acyl | NQ | ND | 0.10 ± 0.03 | 2.07 ± 0.34 | 1.50 ± 0.60 | 0.13 ± 0.07 | ND | ND | 
| 2-acyl | ND | ND | NQ | NQ | NQ | NQ | ND | ND | |
| LysoPS (18:0) | 1-acyl | 1.07 ± 0.27 | 0.47 ± 0.06 | 1.18 ± 0.16 | 5.72 ± 1.77 | 6.15 ± 1.51 | 2.00 ± 0.23 | ND | ND | 
| 2-acyl | ND | ND | ND | ND | ND | ND | ND | ND | |
| LysoPS (18:1) | 1-acyl | NQ | ND | NQ | 0.12 ± 0.06 | NQ | NQ | ND | NQ | 
| 2-acyl | 0.71 ± 0.28 | ND | 0.19 ± 0.04 | NQ | 0.18 ± 0.04 | 0.12 ± 0.05 | ND | NQ | |
| LysoPS (18:2) | 1-acyl | ND | ND | NQ | NQ | ND | ND | ND | NQ | 
| 2-acyl | ND | ND | NQ | NQ | 0.25 ± 0.11 | 0.11 ± 0.04 | ND | NQ | |
| LysoPS (20:4) | 1-acyl | NQ | ND | NQ | ND | NQ | NQ | ND | 0.16 ± 0.09 | 
| 2-acyl | NQ | ND | NQ | 2.53 ± 0.68 | 2.74 ± 1.05 | 0.20 ± 0.05 | ND | NQ | |
| LysoPS (22:5) | 1-acyl | ND | ND | ND | ND | ND | ND | ND | NQ | 
| 2-acyl | ND | NQ | NQ | 0.15 ± 0.10 | NQ | 0.14 ± 0.03 | ND | NQ | |
| LysoPS (22:6) | 1-acyl | ND | NQ | NQ | ND | ND | ND | ND | 0.37 ± 0.24 | 
| 2-acyl | 6.29 ± 1.68 | 0.96 ± 0.06 | 0.26 ± 0.10 | 8.01 ± 3.17 | 1.65 ± 0.86 | 0.77 ± 0.00 | ND | NQ | |
| Data are mean ± SD (n = 3). Concentrations of LysoGPs relative to each 18:1 LysoGP are shown. NQ, not quantified; ND, not detected. | |||||||||