Abstract
We investigated whether propofol affected nociceptive behavior and fos-like immunoreactivity (FLI) in the lumbo-sacral spinal cord after intraplantar formalin injection in wild-type (WT) mice and in mutant mice harboring a point mutation of the gamma-aminobutyric acid type A receptor, which renders them resistant to propofol. Bolus injection of propofol (30 mg/kg IV) in WT mice reduced phase 1 formalin-evoked behavior over the initial 2-3 min but did not alter phase 2 behavior or spinal FLI (64 ± 19 cells/section) compared with WT mice receiving intralipid vehicle plus intraplantar formalin (57 ± 19 cells/section). Most FLI was restricted to superficial dorsal horn laminae ipsilateral to the formalin injection. WT mice receiving a 60-min propofol infusion were anesthetized throughout and did not display nociceptive behavior but had FLI (58 ± 11 cells/section) that did not differ significantly from the other WT groups. Mutant mice receiving bolus injection of propofol (30 mg/kg) and intraplantar formalin were not anesthetized and exhibited nociceptive behavior. The total FLI in the spinal cord was 47 ± 29 cells/section. These data indicate that although propofol produces anesthesia, it does not prevent the FLI that is associated with nociception, a finding consistent with propofol lacking analgesic properties.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 478-483 |
| Number of pages | 6 |
| Journal | Anesthesia and Analgesia |
| Volume | 103 |
| Issue number | 2 |
| DOIs | |
| State | Published - Aug 2006 |
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ASJC Scopus subject areas
- Anesthesiology and Pain Medicine
Cite this
Propofol's effects on nociceptive behavior and spinal C-fos expression afer intraplantar formalin injection in with a mutation in the gamma-aminobutyric acid-typeA β3 subunit. / Merrill, Austin W.; Barter, Linda S; Rudolph, Uwe; Eger, Edmond I.; Antognini, Joseph F.; Carstens, Mirela Iodi; Carstens, Earl.
In: Anesthesia and Analgesia, Vol. 103, No. 2, 08.2006, p. 478-483.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Propofol's effects on nociceptive behavior and spinal C-fos expression afer intraplantar formalin injection in with a mutation in the gamma-aminobutyric acid-typeA β3 subunit
AU - Merrill, Austin W.
AU - Barter, Linda S
AU - Rudolph, Uwe
AU - Eger, Edmond I.
AU - Antognini, Joseph F.
AU - Carstens, Mirela Iodi
AU - Carstens, Earl
PY - 2006/8
Y1 - 2006/8
N2 - We investigated whether propofol affected nociceptive behavior and fos-like immunoreactivity (FLI) in the lumbo-sacral spinal cord after intraplantar formalin injection in wild-type (WT) mice and in mutant mice harboring a point mutation of the gamma-aminobutyric acid type A receptor, which renders them resistant to propofol. Bolus injection of propofol (30 mg/kg IV) in WT mice reduced phase 1 formalin-evoked behavior over the initial 2-3 min but did not alter phase 2 behavior or spinal FLI (64 ± 19 cells/section) compared with WT mice receiving intralipid vehicle plus intraplantar formalin (57 ± 19 cells/section). Most FLI was restricted to superficial dorsal horn laminae ipsilateral to the formalin injection. WT mice receiving a 60-min propofol infusion were anesthetized throughout and did not display nociceptive behavior but had FLI (58 ± 11 cells/section) that did not differ significantly from the other WT groups. Mutant mice receiving bolus injection of propofol (30 mg/kg) and intraplantar formalin were not anesthetized and exhibited nociceptive behavior. The total FLI in the spinal cord was 47 ± 29 cells/section. These data indicate that although propofol produces anesthesia, it does not prevent the FLI that is associated with nociception, a finding consistent with propofol lacking analgesic properties.
AB - We investigated whether propofol affected nociceptive behavior and fos-like immunoreactivity (FLI) in the lumbo-sacral spinal cord after intraplantar formalin injection in wild-type (WT) mice and in mutant mice harboring a point mutation of the gamma-aminobutyric acid type A receptor, which renders them resistant to propofol. Bolus injection of propofol (30 mg/kg IV) in WT mice reduced phase 1 formalin-evoked behavior over the initial 2-3 min but did not alter phase 2 behavior or spinal FLI (64 ± 19 cells/section) compared with WT mice receiving intralipid vehicle plus intraplantar formalin (57 ± 19 cells/section). Most FLI was restricted to superficial dorsal horn laminae ipsilateral to the formalin injection. WT mice receiving a 60-min propofol infusion were anesthetized throughout and did not display nociceptive behavior but had FLI (58 ± 11 cells/section) that did not differ significantly from the other WT groups. Mutant mice receiving bolus injection of propofol (30 mg/kg) and intraplantar formalin were not anesthetized and exhibited nociceptive behavior. The total FLI in the spinal cord was 47 ± 29 cells/section. These data indicate that although propofol produces anesthesia, it does not prevent the FLI that is associated with nociception, a finding consistent with propofol lacking analgesic properties.
UR - http://www.scopus.com/inward/record.url?scp=33746579134&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=33746579134&partnerID=8YFLogxK
U2 - 10.1213/01.ane.0000223847.50233.1b
DO - 10.1213/01.ane.0000223847.50233.1b
M3 - Article
C2 - 16861438
AN - SCOPUS:33746579134
VL - 103
SP - 478
EP - 483
JO - Anesthesia and Analgesia
JF - Anesthesia and Analgesia
SN - 0003-2999
IS - 2
ER -