author_facet Lotsch, Jorn
Kobal, Gerd
Stockmann, Anne
Brune, Kay
Geisslinger, Gerd
Lotsch, Jorn
Kobal, Gerd
Stockmann, Anne
Brune, Kay
Geisslinger, Gerd
author Lotsch, Jorn
Kobal, Gerd
Stockmann, Anne
Brune, Kay
Geisslinger, Gerd
spellingShingle Lotsch, Jorn
Kobal, Gerd
Stockmann, Anne
Brune, Kay
Geisslinger, Gerd
Anesthesiology
Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
Anesthesiology and Pain Medicine
author_sort lotsch, jorn
spelling Lotsch, Jorn Kobal, Gerd Stockmann, Anne Brune, Kay Geisslinger, Gerd 0003-3022 Ovid Technologies (Wolters Kluwer Health) Anesthesiology and Pain Medicine http://dx.doi.org/10.1097/00000542-199712000-00014 <jats:sec> <jats:title>Background</jats:title> <jats:p>The analgesic activity of morphine-6-glucuronide (M-6-G) is well recognized for its contribution to the effects of morphine and its possible use as an opioid analgesic with a wider therapeutic range than morphine. The present study attempted to quantify the relative contribution of M-6-G to analgesia observed after systemic administration of morphine.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>In a placebo-controlled, sixfold crossover study in 20 healthy men, the effects of M-6-G were assessed at steady-state plasma concentrations of M-6-G identical to and two and three times higher than those measured after administration of morphine. Morphine and M-6-G were administered as an intravenous bolus followed by infusion over 4 h. Dosage A was M-6-G-bolus of 0.015 mg/kg plus infusion of 0.0072 mg x kg(-1) x h(-1). Dosage B was M-6-G-bolus of 0.029 mg/kg plus infusion of 0.014 mg x kg(-1) x h(-1). Dosage C was M-6-G-bolus of 0.044 mg/kg plus infusion of 0.022 mg x kg(-1) x h(-1). Dosage D was a morphine bolus of 0.14 mg/kg plus infusion of 0.05 mg x kg(-1) x h(-1) for 4 h. Dosage E was M-6-G combined with morphine (doses A + D). Dosage F was a placebo. The analgesic effects of M-6-G and morphine were measured before administration of the bolus and after 3.5 h using an experimental pain model based on pain-related cortical potentials and pain ratings after specific stimulation of the nasal nociceptor with short pulses of gaseous carbon dioxide.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Morphine significantly reduced subjective and objective pain correlates compared with placebo. In contrast, M-6-G produced no statistically significant effects. The addition of M-6-G to morphine did not increase the effects of morphine. Morphine produced significantly more side effects than M-6-G.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>After short-term intravenous administration at doses that produce plasma concentrations of M-6-G similar to those seen after administration of morphine, M-6-G had no analgesic effects in the present placebo-controlled study in healthy volunteers.</jats:p> </jats:sec> Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers Anesthesiology
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source_id 49
title Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_unstemmed Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_full Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_fullStr Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_full_unstemmed Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_short Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_sort lack of analgesic activity of morphine-6-glucuronide after short-term intravenous administration in healthy volunteers
topic Anesthesiology and Pain Medicine
url http://dx.doi.org/10.1097/00000542-199712000-00014
publishDate 1997
physical 1348-1358
description <jats:sec> <jats:title>Background</jats:title> <jats:p>The analgesic activity of morphine-6-glucuronide (M-6-G) is well recognized for its contribution to the effects of morphine and its possible use as an opioid analgesic with a wider therapeutic range than morphine. The present study attempted to quantify the relative contribution of M-6-G to analgesia observed after systemic administration of morphine.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>In a placebo-controlled, sixfold crossover study in 20 healthy men, the effects of M-6-G were assessed at steady-state plasma concentrations of M-6-G identical to and two and three times higher than those measured after administration of morphine. Morphine and M-6-G were administered as an intravenous bolus followed by infusion over 4 h. Dosage A was M-6-G-bolus of 0.015 mg/kg plus infusion of 0.0072 mg x kg(-1) x h(-1). Dosage B was M-6-G-bolus of 0.029 mg/kg plus infusion of 0.014 mg x kg(-1) x h(-1). Dosage C was M-6-G-bolus of 0.044 mg/kg plus infusion of 0.022 mg x kg(-1) x h(-1). Dosage D was a morphine bolus of 0.14 mg/kg plus infusion of 0.05 mg x kg(-1) x h(-1) for 4 h. Dosage E was M-6-G combined with morphine (doses A + D). Dosage F was a placebo. The analgesic effects of M-6-G and morphine were measured before administration of the bolus and after 3.5 h using an experimental pain model based on pain-related cortical potentials and pain ratings after specific stimulation of the nasal nociceptor with short pulses of gaseous carbon dioxide.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Morphine significantly reduced subjective and objective pain correlates compared with placebo. In contrast, M-6-G produced no statistically significant effects. The addition of M-6-G to morphine did not increase the effects of morphine. Morphine produced significantly more side effects than M-6-G.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>After short-term intravenous administration at doses that produce plasma concentrations of M-6-G similar to those seen after administration of morphine, M-6-G had no analgesic effects in the present placebo-controlled study in healthy volunteers.</jats:p> </jats:sec>
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author Lotsch, Jorn, Kobal, Gerd, Stockmann, Anne, Brune, Kay, Geisslinger, Gerd
author_facet Lotsch, Jorn, Kobal, Gerd, Stockmann, Anne, Brune, Kay, Geisslinger, Gerd, Lotsch, Jorn, Kobal, Gerd, Stockmann, Anne, Brune, Kay, Geisslinger, Gerd
author_sort lotsch, jorn
container_issue 6
container_start_page 1348
container_title Anesthesiology
container_volume 87
description <jats:sec> <jats:title>Background</jats:title> <jats:p>The analgesic activity of morphine-6-glucuronide (M-6-G) is well recognized for its contribution to the effects of morphine and its possible use as an opioid analgesic with a wider therapeutic range than morphine. The present study attempted to quantify the relative contribution of M-6-G to analgesia observed after systemic administration of morphine.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>In a placebo-controlled, sixfold crossover study in 20 healthy men, the effects of M-6-G were assessed at steady-state plasma concentrations of M-6-G identical to and two and three times higher than those measured after administration of morphine. Morphine and M-6-G were administered as an intravenous bolus followed by infusion over 4 h. Dosage A was M-6-G-bolus of 0.015 mg/kg plus infusion of 0.0072 mg x kg(-1) x h(-1). Dosage B was M-6-G-bolus of 0.029 mg/kg plus infusion of 0.014 mg x kg(-1) x h(-1). Dosage C was M-6-G-bolus of 0.044 mg/kg plus infusion of 0.022 mg x kg(-1) x h(-1). Dosage D was a morphine bolus of 0.14 mg/kg plus infusion of 0.05 mg x kg(-1) x h(-1) for 4 h. Dosage E was M-6-G combined with morphine (doses A + D). Dosage F was a placebo. The analgesic effects of M-6-G and morphine were measured before administration of the bolus and after 3.5 h using an experimental pain model based on pain-related cortical potentials and pain ratings after specific stimulation of the nasal nociceptor with short pulses of gaseous carbon dioxide.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Morphine significantly reduced subjective and objective pain correlates compared with placebo. In contrast, M-6-G produced no statistically significant effects. The addition of M-6-G to morphine did not increase the effects of morphine. Morphine produced significantly more side effects than M-6-G.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>After short-term intravenous administration at doses that produce plasma concentrations of M-6-G similar to those seen after administration of morphine, M-6-G had no analgesic effects in the present placebo-controlled study in healthy volunteers.</jats:p> </jats:sec>
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spelling Lotsch, Jorn Kobal, Gerd Stockmann, Anne Brune, Kay Geisslinger, Gerd 0003-3022 Ovid Technologies (Wolters Kluwer Health) Anesthesiology and Pain Medicine http://dx.doi.org/10.1097/00000542-199712000-00014 <jats:sec> <jats:title>Background</jats:title> <jats:p>The analgesic activity of morphine-6-glucuronide (M-6-G) is well recognized for its contribution to the effects of morphine and its possible use as an opioid analgesic with a wider therapeutic range than morphine. The present study attempted to quantify the relative contribution of M-6-G to analgesia observed after systemic administration of morphine.</jats:p> </jats:sec> <jats:sec> <jats:title>Methods</jats:title> <jats:p>In a placebo-controlled, sixfold crossover study in 20 healthy men, the effects of M-6-G were assessed at steady-state plasma concentrations of M-6-G identical to and two and three times higher than those measured after administration of morphine. Morphine and M-6-G were administered as an intravenous bolus followed by infusion over 4 h. Dosage A was M-6-G-bolus of 0.015 mg/kg plus infusion of 0.0072 mg x kg(-1) x h(-1). Dosage B was M-6-G-bolus of 0.029 mg/kg plus infusion of 0.014 mg x kg(-1) x h(-1). Dosage C was M-6-G-bolus of 0.044 mg/kg plus infusion of 0.022 mg x kg(-1) x h(-1). Dosage D was a morphine bolus of 0.14 mg/kg plus infusion of 0.05 mg x kg(-1) x h(-1) for 4 h. Dosage E was M-6-G combined with morphine (doses A + D). Dosage F was a placebo. The analgesic effects of M-6-G and morphine were measured before administration of the bolus and after 3.5 h using an experimental pain model based on pain-related cortical potentials and pain ratings after specific stimulation of the nasal nociceptor with short pulses of gaseous carbon dioxide.</jats:p> </jats:sec> <jats:sec> <jats:title>Results</jats:title> <jats:p>Morphine significantly reduced subjective and objective pain correlates compared with placebo. In contrast, M-6-G produced no statistically significant effects. The addition of M-6-G to morphine did not increase the effects of morphine. Morphine produced significantly more side effects than M-6-G.</jats:p> </jats:sec> <jats:sec> <jats:title>Conclusion</jats:title> <jats:p>After short-term intravenous administration at doses that produce plasma concentrations of M-6-G similar to those seen after administration of morphine, M-6-G had no analgesic effects in the present placebo-controlled study in healthy volunteers.</jats:p> </jats:sec> Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers Anesthesiology
spellingShingle Lotsch, Jorn, Kobal, Gerd, Stockmann, Anne, Brune, Kay, Geisslinger, Gerd, Anesthesiology, Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers, Anesthesiology and Pain Medicine
title Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_full Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_fullStr Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_full_unstemmed Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_short Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
title_sort lack of analgesic activity of morphine-6-glucuronide after short-term intravenous administration in healthy volunteers
title_unstemmed Lack of Analgesic Activity of Morphine-6-glucuronide after Short-term Intravenous Administration in Healthy Volunteers
topic Anesthesiology and Pain Medicine
url http://dx.doi.org/10.1097/00000542-199712000-00014