Skip to main content
Top
Published in: Forensic Toxicology 1/2022

01-01-2022 | Intoxication | Case Report

Ropinirole involved in a fatal case: blood and urinary concentrations

Authors: Sayaka Nagasawa, Rutsuko Yamaguchi, Kanju Saka, Suguru Torimitsu, Fumiko Chiba, Daisuke Yajima, Go Inokuchi, Ayumi Motomura, Kei Kira, Yoshikazu Yamagishi, Yasumitsu Ogra, Hirotaro Iwase

Published in: Forensic Toxicology | Issue 1/2022

Login to get access

Abstract

Purpose

Ropinirole is an antiparkinsonian  drug and has recently been suggested to be effective in amyotrophic lateral sclerosis. It is expected that ropinirole prescriptions will increase in the near future. However, the fatal concentration in blood is unclear at this time. Therefore, we report a fatal case involving ropinirole intoxication and discuss the fatal concentrations with reference to several autopsy cases involving ropinirole.

Methods

Ropinirole was quantified in femoral vein blood, cardiac blood, and urine from five autopsy cases in which ropinirole was detected by drug screening in our laboratory. One is a ropinirole intoxication case (this report) and the others  were non-intoxication cases. Their ropinirole concentrations were compared and discussed.

Results

The ropinirole concentration in this case was 100 ng/mL in femoral blood, 160 ng/mL in cardiac blood, and 1840 ng/mL in urine. The ropinirole concentrations in the four non-ropinirole poisoning cases were 7–35 ng/mL (mean: 24 ng/mL) in femoral blood, 13–100 ng/mL (mean: 60 ng/mL) in cardiac blood, and 140–1090 ng/mL (mean: 640 ng/mL) in urine. Cardiac/peripheral ratios were in the range of 1.6–2.1 (mean 1.8).

Conclusions

There were no obvious signs of overdose, and the high cardiac/peripheral blood ratio suggested that postmortem redistribution may have occurred, but the  peripheral blood ropinirole concentration (100 ng/mL) was obviously higher than that reported in the previous fatal case of ropinirole poisoning (64 ng/mL). Based on these results, the cause of death in this case was considered to be shock and fatal arrhythmia due to ropinirole poisoning. This case provides important data on postmortem blood and urinary levels of ropinirole poisoning.
Literature
3.
go back to reference GBD 2015 Disease and Injury Incidence and Prevalence Collaborators (2016) Global regional and national incidence, prevalence and years lived with disability for 310 disease and injuries, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015. Lancet 388:1545–1602. https://doi.org/10.1016/S0140-6736(16)31678-6001 (open access article)CrossRef GBD 2015 Disease and Injury Incidence and Prevalence Collaborators (2016) Global regional and national incidence, prevalence and years lived with disability for 310 disease and injuries, 1990–2015: a systematic analysis for the Global Burden of Disease Study 2015. Lancet 388:1545–1602. https://​doi.​org/​10.​1016/​S0140-6736(16)31678-6001 (open access article)CrossRef
6.
go back to reference Trenkwalder C, Hening WA, Montagna P, Oertel WH, Allen RP, Walters AS, Costa J, Stiasny-Kolster K, Sampaio C (2008) Treatment of restless legs syndrome: an evidence-based review and implications for clinical practice. Mov Disord 23:2267–2302. https://doi.org/10.1002/mds.22254 (open access article)CrossRefPubMed Trenkwalder C, Hening WA, Montagna P, Oertel WH, Allen RP, Walters AS, Costa J, Stiasny-Kolster K, Sampaio C (2008) Treatment of restless legs syndrome: an evidence-based review and implications for clinical practice. Mov Disord 23:2267–2302. https://​doi.​org/​10.​1002/​mds.​22254 (open access article)CrossRefPubMed
12.
go back to reference Simkó J, Szentandrássy N, Harmati G, Bárándi L, Horváth B, Magyar J, Bányász T, Lórincz I, Nánási PP (2010) Effects of ropinirole on action potential characteristics and the underlying ion currents in canine ventricular myocytes. Naunyn Schmied Arch Pharmacol 382:213–220. https://doi.org/10.1007/s00210-010-0538-1CrossRef Simkó J, Szentandrássy N, Harmati G, Bárándi L, Horváth B, Magyar J, Bányász T, Lórincz I, Nánási PP (2010) Effects of ropinirole on action potential characteristics and the underlying ion currents in canine ventricular myocytes. Naunyn Schmied Arch Pharmacol 382:213–220. https://​doi.​org/​10.​1007/​s00210-010-0538-1CrossRef
18.
go back to reference Sande MA, Mandell GL (1980) Antimicrobial agents, chap 54. In: Goodman and Gilman’s the pharmacological basic of therapeutic, 6th edn. Macmillan Publishers, New York, p 1241 Sande MA, Mandell GL (1980) Antimicrobial agents, chap 54. In: Goodman and Gilman’s the pharmacological basic of therapeutic, 6th edn. Macmillan Publishers, New York, p 1241
29.
go back to reference Baselt RC (2017) Disposition of toxic drugs and chemicals in man, 11th edn. Biomedical Publications, Seal Beach, p 1805 Baselt RC (2017) Disposition of toxic drugs and chemicals in man, 11th edn. Biomedical Publications, Seal Beach, p 1805
Metadata
Title
Ropinirole involved in a fatal case: blood and urinary concentrations
Authors
Sayaka Nagasawa
Rutsuko Yamaguchi
Kanju Saka
Suguru Torimitsu
Fumiko Chiba
Daisuke Yajima
Go Inokuchi
Ayumi Motomura
Kei Kira
Yoshikazu Yamagishi
Yasumitsu Ogra
Hirotaro Iwase
Publication date
01-01-2022
Publisher
Springer Singapore
Published in
Forensic Toxicology / Issue 1/2022
Print ISSN: 1860-8965
Electronic ISSN: 1860-8973
DOI
https://doi.org/10.1007/s11419-021-00593-8

Other articles of this Issue 1/2022

Forensic Toxicology 1/2022 Go to the issue