Effect of peptides on neutralization of the anti-Factor Xa activity of enoxaparin in plasma of patients treated with enoxaparin
Patient no. | 1-L | 2-L | 3-L | 4-L | 5-L | 6-L | 7-L | 8-L | 9-L |
Anti—Factor Xa activity at collection, U/mL | 0.47 | 0.34 | 0.64 | 0.76 | 0.64 | 0.60 | 0.85 | 0.65 | 0.80 |
U/mL anti—Factor Xa activity neutralized in the presence of 12 μg/mL peptide | |||||||||
Peptide | |||||||||
Protamine | 0.016 ± 0.016 | 0.022 ± 0.018 | 0 | 0.092 ± 0.068 | 0.013 ± 0.018 | 0.018 ± 0.017 | 0.244 ± 0.056 | 0.069 ± 0.023 | 0.021 ± 0.027 |
(ARKKAAKA)4 | 0.116 ± 0.008 | 0.073 ± 0.012 | 0.105 ± 0.071 | 0.225 ± 0.068 | 0.194 ± 0.069 | 0.289 ± 0.206 | 0.283 ± 0.058 | 0.194 ± 0.016 | 0.135 ± 0.038 |
C(ARKKAAKA)4C-cyclic | 0.164 ± 0.019 | 0.132 ± 0.044 | 0.119 ± 0.033 | 0.337 ± 0.063 | 0.230 ± 0.051 | 0.163 ± 0.023 | 0.418 ± 0.036 | 0.302 ± 0.037 | 0.175 ± 0.084 |
(ARKKAAKA)3ARKKCAKA | 0.096 ± 0.022 | 0.079 ± 0.014 | 0.084 ± 0.005 | 0.305 ± 0.038 | 0.274 ± 0.080 | 0.165 ± 0.047 | 0.232 ± 0.048 | 0.218 ± 0.018 | 0.157 ± 0.112 |
ARKKAAKA(A16)ARKKAAKA | 0 | 0.011 ± 0.012 | 0.055 ± 0.043 | 0.035 ± 0.050 | 0.005 ± 0.008 | 0 | 0.009 ± 0.007 | 0.062 ± 0.010 | 0.007 ± 0.005 |
(ARKKAAKA)3VLVLVLVL* | 0.213 ± 0.191 | 0.252 ± 0.038 | 0.302 ± 0.067 | 0.439 ± 0.037 | 0.265 ± 0.048 | 0.268 ± 0.007 | 0.478 ± 0.115 | 0.436 ± 0.093 | 0.398 ± 0.133 |
(ARKKARA)6 | 0.026 ± 0.020 | 0.096 ± 0.063 | 0 | 0.171 ± 0.035 | 0.122 ± 0.021 | 0.128 ± 0.008 | 0.180 ± 0.058 | 0.173 ± 0.058 | 0.310 ± 0.231 |
VLVLARKKAAKAPARKKAAKAVLVL | 0.027 ± 0.019 | 0.012 ± 0.030 | 0.021 ± 0.030 | 0.022 ± 0.032 | 0 | 0.018 ± 0.016 | 0.007 ± 0.010 | 0.025 ± 0.035 | 0.050 ± 0.036 |
(ARKKAAKA)3(VL)3 | 0.016 ± 0.012 | 0.030 ± 0.022 | 0.043 ± 0.031 | 0.122 ± 0.054 | 0.109 ± 0.073 | 0.104 ± 0.076 | 0.187 ± 0.099 | 0.133 ± 0.034 | 0.142 ± 0.040 |
(VL)2(ARKKAAKA)3ARKKCAKA | 0.043 ± 0.042 | 0.335 ± 0.075 | 0.008 ± 0.015 | 0.172 ± 0.106 | 0.110 ± 0.059 | 0.329 ± 0.228 | 0.200 ± 0.024 | 0.184 ± 0.072 | 0.240 ± 0.024 |
Patient no. | 1-L | 2-L | 3-L | 4-L | 5-L | 6-L | 7-L | 8-L | 9-L |
Anti—Factor Xa activity at collection, U/mL | 0.47 | 0.34 | 0.64 | 0.76 | 0.64 | 0.60 | 0.85 | 0.65 | 0.80 |
U/mL anti—Factor Xa activity neutralized in the presence of 12 μg/mL peptide | |||||||||
Peptide | |||||||||
Protamine | 0.016 ± 0.016 | 0.022 ± 0.018 | 0 | 0.092 ± 0.068 | 0.013 ± 0.018 | 0.018 ± 0.017 | 0.244 ± 0.056 | 0.069 ± 0.023 | 0.021 ± 0.027 |
(ARKKAAKA)4 | 0.116 ± 0.008 | 0.073 ± 0.012 | 0.105 ± 0.071 | 0.225 ± 0.068 | 0.194 ± 0.069 | 0.289 ± 0.206 | 0.283 ± 0.058 | 0.194 ± 0.016 | 0.135 ± 0.038 |
C(ARKKAAKA)4C-cyclic | 0.164 ± 0.019 | 0.132 ± 0.044 | 0.119 ± 0.033 | 0.337 ± 0.063 | 0.230 ± 0.051 | 0.163 ± 0.023 | 0.418 ± 0.036 | 0.302 ± 0.037 | 0.175 ± 0.084 |
(ARKKAAKA)3ARKKCAKA | 0.096 ± 0.022 | 0.079 ± 0.014 | 0.084 ± 0.005 | 0.305 ± 0.038 | 0.274 ± 0.080 | 0.165 ± 0.047 | 0.232 ± 0.048 | 0.218 ± 0.018 | 0.157 ± 0.112 |
ARKKAAKA(A16)ARKKAAKA | 0 | 0.011 ± 0.012 | 0.055 ± 0.043 | 0.035 ± 0.050 | 0.005 ± 0.008 | 0 | 0.009 ± 0.007 | 0.062 ± 0.010 | 0.007 ± 0.005 |
(ARKKAAKA)3VLVLVLVL* | 0.213 ± 0.191 | 0.252 ± 0.038 | 0.302 ± 0.067 | 0.439 ± 0.037 | 0.265 ± 0.048 | 0.268 ± 0.007 | 0.478 ± 0.115 | 0.436 ± 0.093 | 0.398 ± 0.133 |
(ARKKARA)6 | 0.026 ± 0.020 | 0.096 ± 0.063 | 0 | 0.171 ± 0.035 | 0.122 ± 0.021 | 0.128 ± 0.008 | 0.180 ± 0.058 | 0.173 ± 0.058 | 0.310 ± 0.231 |
VLVLARKKAAKAPARKKAAKAVLVL | 0.027 ± 0.019 | 0.012 ± 0.030 | 0.021 ± 0.030 | 0.022 ± 0.032 | 0 | 0.018 ± 0.016 | 0.007 ± 0.010 | 0.025 ± 0.035 | 0.050 ± 0.036 |
(ARKKAAKA)3(VL)3 | 0.016 ± 0.012 | 0.030 ± 0.022 | 0.043 ± 0.031 | 0.122 ± 0.054 | 0.109 ± 0.073 | 0.104 ± 0.076 | 0.187 ± 0.099 | 0.133 ± 0.034 | 0.142 ± 0.040 |
(VL)2(ARKKAAKA)3ARKKCAKA | 0.043 ± 0.042 | 0.335 ± 0.075 | 0.008 ± 0.015 | 0.172 ± 0.106 | 0.110 ± 0.059 | 0.329 ± 0.228 | 0.200 ± 0.024 | 0.184 ± 0.072 | 0.240 ± 0.024 |
Anti—Factor Xa activity was determined as described in the text.
The data for the most effective peptide, (ARKKAAKA)3VLVLVLVL.