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Clinical Trials About "Quantitation of Human Cerebral Nicotinie Receptors With 2[18F]FA-85380 and PET Healthy Non-smokers and Ex-Smokers and in Heavy and Light Situational Smokers" RSS

20:17 EDT 21st March 2019 | BioPortfolio

We list hundreds of Clinical Trials about "Quantitation of Human Cerebral Nicotinie Receptors With 2[18F]FA-85380 and PET Healthy Non-smokers and Ex-Smokers and in Heavy and Light Situational Smokers" on BioPortfolio. We draw our references from global clinical trials data listed on ClinicalTrials.gov and refresh our database daily.

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Showing "Quantitation Human Cerebral Nicotinie Receptors With 85380 Healthy" Clinical Trials 1–25 of 20,000+

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Quantitation of Human Cerebral Nicotinie Receptors With 2[18F]FA-85380 and PET Healthy Non-smokers and Ex-Smokers and in Heavy and Light Situational Smokers

Background: - Central nicotinic acetylcholine receptors (nAChRs) are primary targets for the action of nicotine. In addition to being involved in tobacco dependence, they are also involved in a variety of brain disorders, including Alzheimer's and Parkinson's diseases. Researchers are interested in developing better ways to study the action of nAChRs to improve treatments for smoking cessation and other problems affected by these receptors. These new study methods may in...


Quantification of Cerebral Cholinergic Function in Parkinson´s Disease by Means of Nuclear Medicine Methods

Parkinson´s disease is based on a Lewy body degeneration of cerebral and extracerebral neurons. This Lewy body degeneration includes cerebral cholinergic neurons besides dopaminergic neurons. In previous studies the investigators found that some clinical parkinsonian symptoms - primarily hypokinesia and rigidity - significantly correlate with the dopaminergic nigrostriatal degeneration which was quantified by dopamine transporter imaging. In contrast to that, resting or...

PET Study of the Nicotinic System in Epilepsy

Mutations in neuronal nicotinic acetylcholine receptors (nAChRs) have been identified in the autosomal dominant nocturnal frontal lobe epilepsy (ADNFLE). Despite the demonstration of a gain of function of the mutated receptors, the precise mechanisms leading to this nocturnal epilepsy are still unknown. In 2006 the investigators studied the nAChR cerebral distribution in a group of patients with ADNFLE carrying a nAChR mutation, by a PET-scan using [18F]-F-A-85380, a ligand wit...


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PET Study of the Nicotinic Receptors in Human

The purpose of this study is to quantify the brain distribution of the nicotinic receptors in human volunteers and their alterations in patients suffering from neurological diseases such as Parkinson and Alzheimer diseases and familial epilepsy. This will be done using Postron Emission Tomography (PET) and a new radiotracer of the nicotinic receptors.

PET Imaging of Nicotinic Acetylcholine Receptors

Background: - Central nicotinic acetylcholine receptors (nAChRs) are the primary target for the action of nicotine. In addition to being involved in tobacco dependence, they are also involved in a variety of brain disorders, including Alzheimer's and Parkinson's diseases. Researchers are interested in developing better ways to study the action of nAChRs to improve treatments for smoking cessation and other problems affected by these receptors. These new study methods may...

Raclopride-PET/MRT

Cerebral insulin resistance plays an important role in the development of obesity and diabetes mellitus type 2. The aim of this project is to examine the effect of human nasal insulin on the dopaminergic system. Therefore, characteristics of cerebral dopamine receptors before and after administration of nasal insulin vs. placebo shall be analyzed in a randomized way. Moreover, the investigators plan to examine the insulin action on cortical and subcortical activation in humans ...

Adenosine and A2A Receptors in Human Brown Adipose Tissue

This study investigates the significance of adenosine and A2A receptors in human brown adipose tissue (BAT) in vivo. Using positron emission tomography (PET), perfusion and the density of A2A receptors will be measured in supraclavicular BAT and other tissues in healthy men. The investigators hypothesize, that adenosine can activate BAT, and that adenosine A2A receptor density changes when BAT is activated by cold exposure. Understanding the mechanisms of BAT activation and th...

Single Photon Emission Computed Tomography to Study Receptors in Parkinson's Disease

This study will use single photon emission computed tomography, or SPECT (see below), to examine brain nicotine receptors in evaluating the role of a chemical called acetylcholine in memory and other problems in Parkinson's disease (PD). Acetylcholine acts by binding to these nicotine receptors. Healthy normal volunteers and patients with Parkinson's disease 40 years of age and older, with or without dementia, may be eligible for this study. Candidates will be screened with ...

Cerebral Perfusion Associated With Postural Changes: an ASL MR Perfusion Study

Postural changes are commonly used as therapeutic maneuver to enhance or reduce cerebral perfusion. For instance, in acute stroke, the patient can be positioned in head down tilt position so as to increase perfusion of cerebral tissues perfusion. In During stroke and in hypertensive patients and during stroke, varying degrees a various loss of cerebral autoregulation is loss are usually observed. The aim of this study is to assess cerebral perfusion with ASL perfusion in human ...

PET Imaging of Nicotinic Acetylcholine Receptors With 2-[18F]F-A-85380-Injection, Initial Evaluation of Radiotracer in Human Voulunteers

Objective: Cocaine addiction continues to be an important public health problem with over 1.7 million users in the US alone. Cocaine addiction is characterized by compulsive drug use despite adverse consequences and high rates of relapse during periods of abstinence. Cocaine addiction may be mediated by neuroadaptations in reward-related learning and memory processes in the mesocorticolimbic dopamine system and glutamatergic corticolimbic circuitry. Metabotropic glutama...

Evaluation of Brain Opioid Receptor Activity in Anorexia Nervosa : a PET [11C]Diprenorphine Study

The place of opioid system in anorexia nervosa (AN) physiopathology is still unclear. Conflicting results were published on cerebral spinal fluid or peripheral levels in anorexia nervosa. However, no data have been reported on opioid cerebral activity. Diprenorphine is a ligand with non-selective binding to opiate receptors µ, κ and δ capable to assess the interaction between endogenous opioids and their receptors.

Exploratory Positron Emission Tomography (PET) Study to Evaluate the Effects of ABT-614 on [11C]-(+)-PHNO Binding Potential to D3 Receptors in the Brain

This study is being done in healthy volunteers to help researchers understand how ABT-614 works in the human body, specifically in the brain. The PET imaging technique can be thought of as a way to take pictures of chemical changes in the brain. To take a PET scan (picture), a substance with low levels of radioactivity (radiotracer) has to be injected when you are in the PET camera. The radiotracer is only radioactive for a short period of time. In this study, PET is being used...

CB1 Receptors in Human Brown Adipose Tissue

This study investigates cannabinoid CB1 receptors in human brown adipose tissue (BAT) and other tissues using positron emission tomography (PET) imaging. Subjects will be scanned in room temperature conditions and during controlled cold exposure, and the density of CB1 receptors in BAT and other tissues will be quantified. We hypothesize, that cannabinoid signaling is increased in cold conditions, when BAT is metabolically active. Understanding the mechanisms of BAT activation...

Effect of Human Amniotic Epithelial Cells on Children With Spastic Cerebral Palsy

This study aimed to evaluate the therapeutic potential of human amniotic epithelial cell (hAEC) transplant in the management of children with spastic cerebral palsy.

Sarpogrelate-Aspirin Comparative Clinical Study for Efficacy and Safety in Secondary Prevention of Cerebral Infarction (S-ACCESS)

Sarpogrelate (MCI-9042) is an antiplatelet drug that decreases 5-hydroxytryptamine (5-HT) levels in platelets via a blockade of 5-HT2 receptors; it has been used in atherosclerotic peripheral arterial disease. S-ACCESS was a randomized, double-blinded trial to compare the relative efficacy of sarpogrelate (100mg three times daily) and aspirin (81mg once daily) in 1510 patients with recent cerebral infarction. Patients were followed for 0.9 to 3.5 years. The primary endpo...

Establishing Novel Detection Techniques for Various Genetic-Related Diseases by Applying DHPLC Platform.

In this, here we want to present a new method for analysis variation in gene copy number for patients and carriers of SMA. This is a relative quantitation method and, therefore, relies on the inclusion of one or more internal control or reference sequences; quantitation of DNA is relative to this reference sequence of known copy number. A peak height from within a potentially duplicated or deleted target region is amplified simultaneously with a disomic reference region in a mu...

Effect of Sarpogrelate on Platelet Aggregation in Patients With Cerebral Infarction: Dose-Responsive Clinical Pharmacology Study

Sarpogrelate is an antiplatelet agent that decreases 5-hydroxytryptamine( 5-HT )levels in platelets via blockade of 5-HT2 receptors, has been used in atherosclerotic peripheral arterial disease. The present double-blind controlled clinical pharmacology study was performed on 45 patients with cerebral infarction, who were given 75, 150, or 300 mg three times daily of sarpogrelate for 7 days in order to evaluate the dose-response relationship in terms of the precisely meas...

Characterization of the DELPhI System in Assessing Brain's Functionality in Different Neurological Disorders

We use Transcranial magnetic stimulation (TMS), combined with simultaneous registration of electroencephalograph (EEG),for examining human cortical functionality. TMS-EEG is a noninvasive brain stimulation method that allows to study human cortical function in vivo. EEG provides an opportunity to directly measure the cerebral response to TMS, measuring the cortical TMS Evoked potential (TEP). In this study we measure TEPs, in a wide variety of neurological conditions and health...

Cerebral Oxygenation and Metabolism After Reversal Of Rocuronium: Comparison Between Sugammadex Versus Neostigmine

Cholinesterase inhibitors such as Neostigmine and Edrophonium have been used to reverse neuromuscular blockade after surgery. However, these drugs have a relatively slow onset and have adverse effects associated with stimulation of muscarinic receptors. In addition, neostigmine cannot be used to reverse profound blockade. Anesthetics may exert their effects on various facets of cerebral function such as cerebral metabolic rate (CMRO2), cerebral blood flow (CBF), cerebral blood...

Brain Imaging in Alzheimer's Disease

The purpose of this study is to use brain imaging technology to examine the role of certain brain chemicals in individuals with Alzheimer's disease (AD) and in healthy volunteers. Cognitive dysfunction in people with AD is thought to arise from decreased chemical activity in specific parts of the brain. Decreases in alpha4beta2 nicotinic acetycholine receptors (nAChRs) have been found in the brains of people who died with AD; however, the status of this receptor system in livi...

The Threshold Value of Regional Cerebral Oxygenation in Detecting Cerebral Ischemia

Using patients receiving spinal anesthesia as a model to evaluate the treshold value of cerebral oximeter to detect the symptoms of cerebral ischemia

Human Umbilical Cord Mesenchymal Stem Cell Therapy for Cerebral Infarction Patients in Convalescent Period.

This is a randomized, double-blind study. Human umbilical cord mesenchymal stem cells (hUC-MSC) will be treated on cerebral infarction patients, and evaluates their neurological function of convalescent period.

A Prospective Study of a New Device for Monitoring Cerebral Oxygenation on Healthy Volunteers

The purpose of this study is to determine whether a new cerebral oxygen monitoring device is effective and comparatively similar to the current approved devices.

EVALUATION OF D3 RECEPTOR OCCUPANCY USING [18F]FLUORTRIOPRIDE ([18F]FTP) PET/CT

Preclinical work suggests that D3 dopamine receptors may be important in the study of the pathophysiology of affective disorders, psychotic disorders and addiction. D3 receptors may also play a role in dystonia, Parkinson's disease and response to treatment of these disorders. However, there has been a lack of specific radioligands for imaging D3 receptors. This proposed protocol will evaluate the uptake of [18F]FTP as a more specific in vivo measure of D3 receptor binding in t...

To Evaluate The Relationship Between Plasma Drug Levels And Receptor Binding in Lung Using PET (Positron Emission Tomography) In Healthy Volunteers

The purpose of this study is to assess the safety and tolerability of a novel positron emission tomography (PET) tracer [11C]BMT-136088 in healthy adult subjects for measurement of availability of Lysophosphatidic Acid (LPA1) receptors in the human lung and to use this tracer to assess LPA1 receptor occupancy using [11C]BMT-136088 in the human lung following oral administration of Bristol Myers Squibb (BMS)-986020.


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