The main goal of this study is the pharmacokinetic evaluation of a 30 mg and a 60 mg pulmonary administered levodopa with 2% l-leucine dry powder dose. The results gained with this study which will be used for further optimalisation and dose…
ID
Source
Brief title
Condition
- Movement disorders (incl parkinsonism)
Synonym
Research involving
Sponsors and support
Intervention
Outcome measures
Primary outcome
Maximum levodopa concentration in plasma (Cmax).
Time to maximum concentration (Tmax).
Area under the concentration time (minutes) curve at 0-180 min (AUC0-180) after
administration of the dose (related to the actual dose administered (weighed
dose minus remained dose in inhaler after inhalation).
Secondary outcome
Absorption rate constant (Ka) of levodopa after pulmonary administration.
Terminal elimination half life (T1/2el) of levodopa after pulmonary
administration.
Decrease of FEV1 in percentage measured by spirometry (at predose, 35 and 100
minutes after administration.
Number of participants with adverse events (both spontaneously reported and
reported as a result of questioning by the researcher.
Background summary
Because of the lack of treatment options with a very rapid onset for
Parkinson*s disease patients in the off period, there is a need for the
development of rapid onset options to administrate levodopa, like a pulmonary
formulation of levodopa, used as rescue therapy. Rescue therapy is used on an
acute, as-needed basis to return patients to an on state when they are
experiencing an off state. Rescue therapy aims at a rapid return to an on state
in patients with wearing off or patients with early morning akinesia. In a
former study, we assessed the applicability of Parkinson's patients to perform
an inhalation manoeuvre during an off period. Based on their inspiratory
capacities, we developed a levodopa inhaler with levodopa dry powder
combination, which seems suitable for use during off periods.
Study objective
The main goal of this study is the pharmacokinetic evaluation of a 30 mg and a
60 mg pulmonary administered levodopa with 2% l-leucine dry powder dose. The
results gained with this study which will be used for further optimalisation
and dose selection for a next study. Further, this study will gain information
about the tolerability of our levodopa formulation when administered via the
lungs.
Study design
3 visits
1st visit: lung function testing before and 2 times after inhalation of
levodopa, inhalation of 30 mg levodopa, pharmacokinetic analysis of levodopa
(for which blood samples will be drawn at 10 time points).
2nd visit: lung function testing before and 2 times after inhalation of
levodopa, inhalation of 30 mg levodopa, pharmacokinetic analysis of levodopa
(for which blood samples will be drawn at 10 time points).
3rd visit: lung function testing before and 2 times after inhalation of
levodopa, intake of own levodopa medication, pharmacokinetic analysis of
levodopa (for which blood samples will be drawn at 10 time points).
Intervention
Inhalation of levodopa.
Study burden and risks
Levodopa wordt als stof al vele jaren toegepast bij de ziekte van Parkinson.
Alle geincludeerde proefpersonen gebruiken levodopa. Na inhalatie zijn de te
verwachten systemische bijwerkingen van levodopa vergelijkbaar met de
bijwerkingen na orale toediening. Op dit gebied is er voor de proefpersoon geen
extra belasting. Omdat niet bekend en niet in te schatten is wat de reactie van
de longen op de toediening van levodopa is, wordt bij deze studie de FEV1/FVC
van de patient intensief gemonitord en vindt intensieve samenwerking met de
longarts plaats. Hiertoe wordt een eenvoudige, weinig belastbare longfunctie
test gebruikt.
Het afnemen van bloed zal via een tap systeem gebeuren, zodat de patient per
bezoek maar 1 maal geprikt hoeft te worden en de overige 9 maal bloed uit het
systeem gehaald kan worden.
Dit onderzoek is alleen uitvoerbaar in deze patiëntencategorie. Voor de
doorontwikkeling van een geschikt inhalatie preparaat met levodopa voor gebruik
bij de ziekte van Parkinson zijn de gegevens die worden verkregen uit dit
onderzoek noodzakelijk.
Van Swietenplein 1
Groningen 9728 NT
NL
Van Swietenplein 1
Groningen 9728 NT
NL
Listed location countries
Age
Inclusion criteria
- Signed informed consent.;- Diagnosed with Parkinson*s disease;- At least 18 years old. ;- Currently on stable Parkinson*s disease levodopa regimen.;- Require levodopa containing medication regimen with a maximum of 4 administrations a day.;- Able to perform spirometry.
Exclusion criteria
- Cognitive dysfunction, which precludes good understanding of instructions and/or informed consent.;- Pregnant or breast feeding.;- Active pulmonary disease. ;- Patients with known symptomatic orthostatic hypotension.;- The use of COMT inhibitors and/or MAO-B inhibitors.
Design
Recruitment
Medical products/devices used
Followed up by the following (possibly more current) registration
No registrations found.
Other (possibly less up-to-date) registrations in this register
No registrations found.
In other registers
Register | ID |
---|---|
EudraCT | EUCTR2015-002992-11-NL |
CCMO | NL54225.099.15 |