- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02588924
Study on the Relationship Between Environmental and Occupational Exposure to Metals and Parkinson's Disease
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
During the selection of the sample it is essential to consider all the variables that could provoke an alteration in the levels of the indicators examined in the biological fluids investigated.
The adoption of strict criteria for inclusion and exclusion, which differ from metal to metal, is therefore necessary to establish the presence / absence of possible confounding factors that could affect the analysis or interpretation of the data.
It is to be noted also that the number of required participants in a study of MB must be sufficiently large to allow an adequate statistical analysis: the more limited the group of subjects included in the study is, the broader the variability of the data due to inter-individual and methodological differences.
In light of this, some variables, such as age and sex, will be firstly neglected and other potential confounding factors will be considered such as, for example, smoking habits.
Based on the purpose of the research project, the following criteria for exclusion will be considered:
- diseases that may interfere with toxicokinetics of the analyzed metals;
- pharmacological therapy;
- habit-forming additives consumption (excessive alcohol consumption);
- altered physiological states (pregnancy, strenuous physical exercise, recent meal, stress, psychological disorders);
On the contrary, the basic criteria for inclusion in the study are:
- age: subjects of working age, between 18 and 65 years;
- diagnosis of Parkinson's disease (using the criteria of the "London Brain Bank")
Regarding the criteria of partition or stratification of the subjects, the type and number of the possible partitions are conditioned by the sample size; indeed it is essential to ensure a sufficient number of cases (and if possible a similar number of cases) in the various layers to have correct statistical results. It was recommended that the minimum number of subjects per layer must be equal to 80.
In order to collect all the necessary information for the inclusion of subjects in the study and the subsequent stratification of the data, an anonymous questionnaire was realized and administered to each recruited subject.
The questionnaire deals with the environment and the lifestyle and work habits of every participant and it consists of multiple choice questions and free response questions and is divided into macro areas: identification data for data processing; place of residence; professional activity; extraprofessional activities; eating habits; habit-forming additives consumption; medical history.
Each question will be transformed into a "continue" or "categorical" variable in order to be able to build and constantly update a database summarizing the collected data and allowing the statistical analysis of the results.
Each subject enrolled will be also asked to sign a consent form, which states that he or she voluntarily take part to the study, after being informed about the purpose of the study and the analysis of both biological samples and personal data.
The guarantee of anonymity for people recruited for this study is provided by an anonymous questionnaire which do not contain personal data, which are collected only in the consent form, separately from the questionnaire.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Locations
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Isernia
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Pozzilli, Isernia, Italy, 86077
- Neuromed IRCCS
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Napoli
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Naples, Napoli, Italy, 80138
- Second University of Naples
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
EXCLUSION CRITERIA:
- diseases that may interfere with toxicokinetics of the analyzed metals;
- taking medication;
- taking discretionary agents (excessive alcohol consumption);
- altered physiological states (pregnancy, strenuous physical exercise, recent meal, stress, psychological disorders);
INCLUSION CRITERIA:
- age: subjects of working age, between 28 and 70 years;
- diagnosis of Parkinson's disease (using the criteria of the "London Brain Bank")
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
Second University of Naples
the present research project is aimed at measuring out the concentrations of copper, iron and manganese in biological fluids (blood, serum) of patients with Parkinson's disease and of subjects of the control group and assess possible correlations between changes in the content of metals and the pathology.
|
enrollment of patients with Parkinson's disease; collection of blood samples; measuring out the concentrations of copper, iron and manganese in biological fluids (blood, serum) of patients with Parkinson's disease and of subjects of the control group and assess possible correlations between changes in the content of metals and the pathology.
|
Neuromed IRCCS
the present research project is aimed at measuring out the concentrations of copper, iron and manganese in biological fluids (blood, serum) of patients with Parkinson's disease and of subjects of the control group and assess possible correlations between changes in the content of metals and the pathology.
|
enrollment of patients with Parkinson's disease; collection of blood samples;
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Enrollment
Time Frame: two-year
|
Enrollment: In order to verify if some factors might be connected with a metals exposure for the disease onset, a questionnaire investigating the patients' residence area, the field of work and the specific activities carried out, as well as lifestyle habits has been prepared. Sample Collection: Patients and controls will be subject to blood sampling for manganese, copper and iron quantitative analysis |
two-year
|
Sample Collection
Time Frame: two-year
|
We sample 5 ml of blood in tube serum (at least 2 ml of serum) then we label the test tube with an identifying code which is: S-PRK(for cases affected by Parkinson followed by a progressive number es. S-PRK 1,2,3…..), and S-CRL (for controls followed by a progressive number es. S-CRL 1,2,3….) This samples will be centrifugated at 4000 rpm for 10 min. Than we divide the serum in 5 eppendorf of 1.5 mL for cases and 5 for controls:
The aliquots will be stored in a refrigerator at 4-6 ° C (no longer than 7 days) in appropriate Eppendorf box, in order to avoid the inclination of the sample with consequent loss of serum. |
two-year
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
determination by atomic absorption spectroscopy of the concentration of manganese, copper and iron
Time Frame: two-year
|
the determination by atomic absorption spectroscopy of the concentration of manganese, copper and iron on the eppendorf sampled will be carried out at the Laboratory of Industrial Toxicology of Occupational Medicine Area - Section of Hygiene, Occupational Medicine, Forensic Medicine of the Second University of Naples
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two-year
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
The statistical data analysis using the SPSS software
Time Frame: two-year
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Statistical analysis will be carry out by using the SPSS software, version 14.0.1 for Windows (SPSS ITALIA s.r.l Bologna, Italy)
|
two-year
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: Paola Pedata, researcher, University of Campania "Luigi Vanvitelli"
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- 961
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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