Studies of in vivo electropermeabilization by gamma camera measurements of (99m)Tc-DTPA
A protocol was developed to study the drug uptake from in vivo electropermeabilization at different settings of parameters influencing the uptake efficiency. Radiolabelled diethylenetriaminepentaacetic acid (DTPA) was used to trace the distribution and internalization of a hydrophilic drug after in vivo electropermeabilization. Skeletal muscle tissue in rat was treated with permeabilizing electric pulses before or after intravenous administration of (99m)Tc-DTPA. The drug accumulation in the treated volume was subsequently evaluated with a scintillation camera. The dependence of uptake on field strength and duration of the applied electric pulses was investigated for exponentially decaying pulses and square wave pulses. Further, the uptake dependence on time interval between injection and pulsation was studied as well as the uptake dependence on the number of pulses applied in a single electropermeabilization treatment. Dynamic gamma camera studies were performed to quantify the time scale of the drug uptake in electropermeabilized tissue.
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
1999 |
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| Erschienen: |
1999 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:1473 |
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| Enthalten in: |
Biochimica et biophysica acta - 1473(1999), 2-3 vom: 27. Dez., Seite 321-8 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Engström, P E [VerfasserIn] |
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| Themen: |
7A314HQM0I |
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| Anmerkungen: |
Date Completed 14.02.2000 Date Revised 10.06.2019 published: Print Citation Status MEDLINE |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM105241644 |
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| 100 | 1 | |a Engström, P E |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a Studies of in vivo electropermeabilization by gamma camera measurements of (99m)Tc-DTPA |
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| 500 | |a Date Completed 14.02.2000 | ||
| 500 | |a Date Revised 10.06.2019 | ||
| 500 | |a published: Print | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a A protocol was developed to study the drug uptake from in vivo electropermeabilization at different settings of parameters influencing the uptake efficiency. Radiolabelled diethylenetriaminepentaacetic acid (DTPA) was used to trace the distribution and internalization of a hydrophilic drug after in vivo electropermeabilization. Skeletal muscle tissue in rat was treated with permeabilizing electric pulses before or after intravenous administration of (99m)Tc-DTPA. The drug accumulation in the treated volume was subsequently evaluated with a scintillation camera. The dependence of uptake on field strength and duration of the applied electric pulses was investigated for exponentially decaying pulses and square wave pulses. Further, the uptake dependence on time interval between injection and pulsation was studied as well as the uptake dependence on the number of pulses applied in a single electropermeabilization treatment. Dynamic gamma camera studies were performed to quantify the time scale of the drug uptake in electropermeabilized tissue | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Research Support, Non-U.S. Gov't | |
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| 700 | 1 | |a Salford, L G |e verfasserin |4 aut | |
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