Interventional, Open-label, One-sequence Study to Investigate the Effects of Multiple Doses of Foliglurax on the Pharmacokinetics of Cytochrome P450 (CYP450) Substrates Caffeine (CYP1A2), Montelukast (CYP2C8), and Midazolam (CYP3A4) in Healthy Subjects

The purpose of this study is to help determine which types of drugs that may interact with foliglurax

开始日期2020-02-10

申办/合作机构

H. Lundbeck A/S

NCT04322227 / Terminated临床1期

Interventional, Randomized, Double-blind, Placebo-controlled Three-way Crossover Study Investigating the Pharmacodynamic Effects of Two Doses of Foliglurax Using Electroencephalography in Patients With Parkinson's Disease and in Healthy Subjects

The purpose of this study is to investigate effects of foliglurax on brain wave patterns (electric signals) in healthy subjects and in patients with PD

开始日期2020-01-23

申办/合作机构

H. Lundbeck A/S

NCT04175132 / Terminated临床1期

Interventional, Open-label, Positron Emission Tomography (PET) Study With [11C]-PXT012253 Investigating the Brain mGlu4 Receptor Occupancy, Safety, Tolerability and Pharmacokinetics of Foliglurax in Healthy Subjects and Patients With Parkinson's Disease

A study to learn how foliglurax binds in regions of the brain

开始日期2019-11-12

申办/合作机构

H. Lundbeck A/S

100 项与 Foliglurax 相关的专利（医药）

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项与 Foliglurax 相关的文献（医药）

2023-03-25·Brain research

Foliglurax, a positive allosteric modulator of the metabotrophic glutamate receptor 4, protects dopaminergic neurons in MPTP-lesioned male mice.

Article

作者: Mélanie Bourque ; Marc Morissette ; François Conquet ; Delphine Charvin ; Thérèse Di Paolo

Overactivity of the corticostriatal glutamatergic pathway is documented in Parkinson's disease (PD) and stimulation of presynaptic metabotropic glutamate 4 (mGlu4) receptors on these striatal afferents inhibits glutamate release normalizing neuronal activity in the basal ganglia. Moreover, mGlu4 receptors are also expressed in glial cells and are able to modulate glial function making this receptor a potential target for neuroprotection. Hence, we investigated whether foliglurax, a positive allosteric modulator of mGlu4 receptors with high brain exposure after oral administration, has neuroprotective effects in MPTP mice to model early PD. Male mice were treated daily from day 1 to 10 with 1, 3 or 10 mg/kg of foliglurax and administered MPTP on the 5^th day then euthanized on the 11th day. Dopamine neuron integrity was assessed with measures of striatal dopamine and its metabolites levels, striatal and nigral dopamine transporter (DAT) binding and inflammation with markers of striatal astrocytes (GFAP) and microglia (Iba1). MPTP lesion produced a decrease in dopamine, its metabolites and striatal DAT specific binding that was prevented by treatment with 3 mg/kg of foliglurax, whereas 1 and 10 mg/kg had no beneficial effect. MPTP mice had increased levels of GFAP; foliglurax treatment (3 mg/kg) prevented this increase. Iba1 levels were unchanged in MPTP mice compared to control mice. There was a negative correlation between dopamine content and GFAP levels. Our results show that positive allosteric modulation of mGlu4 receptors with foliglurax provided neuroprotective effects in the MPTP mouse model of PD.

2022-08-17·Pharmacology, biochemistry, and behavior

Clinical investigations of compounds targeting metabotropic glutamate receptors.

Review

作者: Jeffrey M Witkin ; Kamal P Pandey ; Jodi L Smith

Pharmacological modulation of glutamate has long been considered to be of immense therapeutic utility. The metabotropic glutamate receptors (mGluRs) are a potential target for safely altering glutamate-driven excitation. Data support the potential therapeutic use of mGluR modulators in the treatment of anxiety, depression, schizophrenia, and other psychiatric disorders, pain, epilepsy, as well as neurodegenerative and neurodevelopmental disorders. For each of the three mGluR groups, compounds have been constructed that produce either potentiation or functional blockade. PET ligands for mGlu5Rs have been studied in a range of patient populations and several mGlu5R antagonists have been tested for potential efficacy in patients including mavoglurant, diploglurant, basimglurant, GET 73, and ADX10059. Efficacy with mGlu5R antagonists has been reported in trials with patients with gastroesophageal reflux disease; data from patients with Parkinson's disease or Fragile X syndrome have not been as robust as hoped. Fenobam was approved for use as an anxiolytic prior to its recognition as an mGlu5R antagonist. mGlu2/3R agonists (pomaglumated methionil) and mGlu2R agonists (JNJ-40411813, AZD 8529, and LY2979165) have been studied in patients with schizophrenia with promising but mixed results. Antagonists of mGlu2/3Rs (decoglurant and TS-161) have been studied in depression where TS-161 has advanced into a planned Phase 2 study in treatment-resistant depression. The Group III mGluRs are the least developed of the mGluR receptor targets. The mGlu4R potentiator, foliglurax, did not meet its primary endpoint in patients with Parkinson's disease. Ongoing efforts to develop mGluR-targeted compounds continue to promise these glutamate modulators as medicines for psychiatric and neurological disorders.

2022-08-05·Neuropharmacology

A positive allosteric modulator of mGlu4 receptors restores striatal plasticity in an animal model of l-Dopa-induced dyskinesia.

Article

作者: Valeria Calabrese ; Barbara Picconi ; Nicolas Heck ; Federica Campanelli ; Giuseppina Natale ; Gioia Marino ; Miriam Sciaccaluga ; Veronica Ghiglieri ; Alessandro Tozzi ; Estelle Anceaume ; Emeline Cuoc ; Jocelyne Caboche ; François Conquet ; Paolo Calabresi ; Delphine Charvin

By decreasing glutamate transmission, mGlu4 receptor positive allosteric modulators (mGlu4-PAM), in combination with levodopa (l-DOPA) may restore the synergy between glutamatergic and dopaminergic transmissions, thus maximizing the improvement of motor function in Parkinson's disease (PD). This study aimed to clarify the effects of foliglurax, a selective mGlu4-PAM, on the loss of bidirectional synaptic plasticity associated with l-DOPA-induced dyskinesia (LID). Behavioral assessments compared dyskinesia intensity in 6-hydroxydopamine (6-OHDA)-lesioned rats treated with l-DOPA or l-DOPA plus foliglurax. In slices from the same rats, patch-clamp techniques were used to examine electrophysiological differences in glutamatergic synapses, evaluating the EPSCs mediated by NMDA and AMPA receptors in striatal spiny projection neurons. High-frequency stimulation of corticostriatal fibers was used as long-term potentiation (LTP)-inducing protocol. Conversely, 15 min of low-frequency stimulation was applied to depotentiate LTP. The density of dendritic spines was measured in striatal slices in the same experimental conditions. Our results show that, in corticostriatal slices, foliglurax decreased spontaneous glutamatergic transmission in both sham-operated and 6-OHDA lesioned rats. When co-administered with l-DOPA in 6-OHDA-lesioned rats, foliglurax fully restored dendritic spine density in a dose-dependent manner. Moreover, this co-treatment rescued striatal bidirectional plasticity and attenuated the intensity of l-DOPA-induced dyskinesia. This is the first demonstration in an animal model of PD and dyskinesia that a mGlu4 PAM can restore striatal synaptic plasticity.