Idiopathic Parkinson's Disease
Conditions
Keywords
Idiopathic Parkinson's disease, Deep Brain stimulation, Hepatic glucose production, Insulin, Weight gain, Patient with an Idiopathic Parkinson's disease
Brief summary
Parkinson' disease is a neurodegenerative disorder characterised by bradykinesia, rigidity, rest tremor and postural instability. Dopaminergic therapy such as L-Dopa and dopamine agonists usually leads to a dramatic improvement of symptoms, but disease progression nevertheless remains inevitable. Bilateral Deep brain stimulation in subthalamic nucleus (STN) leads to a spectacular clinical improvement in patients with motor complications and is now considered as the gold standard surgical treatment. However, this surgery induces a post-operative body weight gain which may limit the benefits of this technique and induce critical metabolic disorders such as profound alterations in the central control of energy metabolism. Previous data seems to show that glucose metabolism is also altered. The aim of this prospective study was to identify if the STN stimulation could modify glucose metabolism regulation especially the endogen glucose production (by liver) Hypothalamus is able to detect glucose concentration variations and to control/adjust glucose levels by modulating the hepatic glucose production. As hypothamus and STN are anatomically closed, we hypothesise that the STN stimulation could modulate the hypothalamus function and consequently modify glucose production.
Detailed description
ilot study 8 patients Inclusion visit : * Clinical examination/ Interview on health and medical history * Complete UPDRS * Body composition measured by DEXA * Biologic check up * MMS Protocol : All subjects were studied in the postabsorptive state after a 10-h overnight fast. On the day of the experiment, patients do not receive their treatment (MED OFF). One catheter was retrogradely inserted into a dorsal vain and was used for blood sample. A second catheter was inserted into the controlateral arm for the tracer infusion. A continuous infusion of D-6,6 2H2 glucose (0,05mg/kg/h) was performed during 6 hours (after a primed dose of 0,05 mg/kg of this tracer). The first 3 hours, patients were studied without stimulation (STIM OFF); the last 3 hours the stimulator was actuated (STIM ON). Blood samples were regularly collected for the 2H2 glucose enrichment determination, and for the insulin, glucose and glucagon plasma concentration analyses.
Interventions
BEHAVIORALe.g., Protein and calorie controlled diet; Self-hypnotic relaxation
Pilot description
Sponsors
University Hospital, Clermont-Ferrand
Study design
Allocation
NON_RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
DIAGNOSTIC
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No
Inclusion criteria
: * Age : 18-70 years * Patient with an idiopathic Parkinson's disease according to the criteria of the Parkinson's Disease Society Brain Bank (Hughes et al., 1992) * Patient treated with a deep brain stimulation according to the French consensus conference of treatment of Parkinson's disease (Consensus Conference Proceeding, 2000) * Effect of the stimulation 50% * Weight gain \>5% (after surgery compared to before surgery) * MMS\>24/30 * No treatment modification 7 days before the inclusion * Affiliation to social security * Agreement of patients
Exclusion criteria
: * Patient treated with antibiotics, AINS, AIS or other treatment which could interfere with the protocol * Patients with significant heart, respiratory, psychiatric, metabolic, hepatic, kidney diseases; diabetes, heart deficiency, chronic kidney deficiency, untreated thyroid disease … * Patients with metabolic and/or biological anomalies * Pregnant women * Medical or chirurgical previous history which could interfere with the protocol * Alcohol (\>30g/day); Tobacco (\>10 cigarettes/day) * Participation to an other study at the same time
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| The primary outcome is the hepatic glucose production determined using the 2H2 glucose enrichment measurement and the infusion flow. | The hepatic glucose production was calculated during OFF stimulation period and ON stimulation period |
Secondary
| Measure | Time frame |
|---|---|
| -Insulin plasma concentration kinetic -Glucose plasma concentration kinetic -Glucagon plasma concentration kinetic | During plasma concentration kinetic |
Countries
France
Outcome results
None listed