Schizophrenia Clinical Trial
Official title:
The Phosphodiesterase Inhibitor Pentoxifylline as an Adjunctive in Treatment of Negative Symptoms in Chronic Schizophrenia: A Proof-of-Concept, Randomized, Double-Blind, Placebo-Controlled Trial
The aim of this study to evaluate the efficacy and safety of pentoxifylline, the novel phosphodiesterase inhibitor, as an adjunctive to risperidone in alleviating the negative symptoms of schizophrenia.
there is some evidence for the role of phosphodiesterase (PDE) signaling system in pathophysiology of schizophrenia making this system a potential target for therapeutic agents. PDEs are a family of enzymes that hydrolyse cyclic nucleotides and thus play a key role in regulating intracellular levels of the second messenger cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate. Pentoxifylline (PTX) is a methylated xanthine derivative and a PDE inhibitor that is FDA-approved for the treatment of patients with intermittent claudication on the basis of chronic occlusive arterial disease of the limbs. It is known to inhibit platelet aggregation, increase erythrocyte flexibility or deformability, and reduce blood viscosity. The rationale for its use in schizophrenia is that it competitively inhibits PDEs, resulting in increased cAMP levels, the activation of protein kinase A (PKA), the inhibition of IL and TNF-α synthesis, and reduced inflammation. Furthermore, there is growing evidence to support the inflammatory hypothesis of schizophrenia, the investigators will also explore whether cytokine levels mediate the response from pentoxifylline treatment. ;
Status | Clinical Trial | Phase | |
---|---|---|---|
Recruiting |
NCT05039489 -
A Study on the Brain Mechanism of cTBS in Improving Medication-resistant Auditory Hallucinations in Schizophrenia
|
N/A | |
Completed |
NCT05321602 -
Study to Evaluate the PK Profiles of LY03010 in Patients With Schizophrenia or Schizoaffective Disorder
|
Phase 1 | |
Completed |
NCT05111548 -
Brain Stimulation and Cognitive Training - Efficacy
|
N/A | |
Completed |
NCT04503954 -
Efficacy of Chronic Disease Self-management Program in People With Schizophrenia
|
N/A | |
Completed |
NCT02831231 -
Pilot Study Comparing Effects of Xanomeline Alone to Xanomeline Plus Trospium
|
Phase 1 | |
Completed |
NCT05517460 -
The Efficacy of Auricular Acupressure on Improving Constipation Among Residents in Community Rehabilitation Center
|
N/A | |
Completed |
NCT03652974 -
Disturbance of Plasma Cytokine Parameters in Clozapine-Resistant Treatment-Refractory Schizophrenia (CTRS) and Their Association With Combination Therapy
|
Phase 4 | |
Recruiting |
NCT04012684 -
rTMS on Mismatch Negativity of Schizophrenia
|
N/A | |
Recruiting |
NCT04481217 -
Cognitive Factors Mediating the Relationship Between Childhood Trauma and Auditory Hallucinations in Schizophrenia
|
N/A | |
Completed |
NCT00212784 -
Efficacy and Safety of Asenapine Using an Active Control in Subjects With Schizophrenia or Schizoaffective Disorder (25517)(P05935)
|
Phase 3 | |
Completed |
NCT04092686 -
A Clinical Trial That Will Study the Efficacy and Safety of an Investigational Drug in Acutely Psychotic People With Schizophrenia
|
Phase 3 | |
Completed |
NCT01914393 -
Pediatric Open-Label Extension Study
|
Phase 3 | |
Recruiting |
NCT03790345 -
Vitamin B6 and B12 in the Treatment of Movement Disorders Induced by Antipsychotics
|
Phase 2/Phase 3 | |
Recruiting |
NCT05956327 -
Insight Into Hippocampal Neuroplasticity in Schizophrenia by Investigating Molecular Pathways During Physical Training
|
N/A | |
Terminated |
NCT03261817 -
A Controlled Study With Remote Web-based Adapted Physical Activity (e-APA) in Psychotic Disorders
|
N/A | |
Terminated |
NCT03209778 -
Involuntary Memories Investigation in Schizophrenia
|
N/A | |
Completed |
NCT02905604 -
Magnetic Stimulation of the Brain in Schizophrenia or Depression
|
N/A | |
Recruiting |
NCT05542212 -
Intra-cortical Inhibition and Cognitive Deficits in Schizophrenia
|
N/A | |
Completed |
NCT04411979 -
Effects of 12 Weeks Walking on Cognitive Function in Schizophrenia
|
N/A | |
Terminated |
NCT03220438 -
TMS Enhancement of Visual Plasticity in Schizophrenia
|
N/A |