Effect of Vitamin D as Adjunctive Therapy in Patients With Pulmonary Evolution Tuberculosis (VitaminD)

June 3, 2015 updated by: Martha Torres Rojas, Instituto Nacional de Enfermedades Respiratorias

Effect of Vitamin D as Adjunctive Therapy in Patients With Pulmonary Evolution Tuberculosis in the National Institute of Respiratory Diseases

Tuberculosis (TB) is the second largest infectious disease that causes death in the last 4 centuries in all the world. Observational studies found an association between vitaminD and TB, suggesting a potential therapeutic role of vitaminD supplementation in patients with active tuberculosis. The hypothesis is that the administration of vitaminD is associated with changes in the levels of cytokines in patients with tuberculosis treated with first-line drugs. The aim of this study is to evaluate the effect of vitaminD supplementation on the clinical course, the time of negative smears and cultures, and the effect on the immune response in patients with pulmonary tuberculosis (TBP).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Unknown

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

We are going to include of 60 patients diagnosed with confirmed TBP with and without diabetes mellitus, by positive smear and culture for Mycobacterium tuberculosis sensitive to first-line drugs (rifampicin, isoniazid, pyrazinamide and ethambutol), which will be grouped as follows: 1) patients who receive vitamin D (VD) (n = 30) and 2) patients who not receive vitamin D (NVD) (n = 30) in addition to drug treatment of tuberculosis drug frontline. Blood samples must be taken each month until the end of treatment.The VD group of participants will receive treatment with a daily dose of Vitamin D 200 International Units (IU) during the first two months of treatment. All Patients who participate must give their written consent.

First, we are going to separate the peripheral blood mononuclear cells with Ficoll reagent. Then, for the determination of intracellular cytokines in basal conditions and after the antigenic stimulation with M.tuberculosis, the flow cytometric technique is going to be used and the results will be analyzing in a flow cytometer. We are going to infected cells with M. tuberculosis strain at a multiplicity of infection (MOI) of 1 and 10, in order to determinate phagocytosis and bactericidal activity of peripheral whole blood of patients, using Colony Forming Units (CFU) and staining. Extraction of RNA will be performed according to the kit supplier. The amplification reaction is going to perform with Applied Biosystems and Sybr Green Master Mix. We are going to use the unpaired Student t test, for the normal distribution parameters.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Anticipated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Men and women over 18 and under 65 years old, diagnosed with tuberculosis confirmed by positive smear and positive culture, without documented evidence of previous treatment for TB, with hemoglobin values greater than 10 g / dL, and written concent.

Exclusion Criteria:

  • Patients diagnosed with HIV, or who do not give written concent, patients with chronic lung disease, patients with clinical evidence of infectious or chronic inflammatory disease processes such as; rheumatoid arthritis, patients with chronic lung disease, systemic lupus erythematosus (SLE), Sjögren Sx, dermatomyositis, scleroderma, seronegative arthritis, gout, inflammatory bowel disease, chronic active hepatitis, glomerulonephritis, rheumatic fever and patients with cardiac disease, cancer, and patients with a history of alcohol or drug abuse.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Placebo Comparator: Placebo
The patient will take a single tablet of placebo daily for 60 days. Each patient will go to the hospital in order to take the blood sample.
Experimental: VitaminD
The patient will take a single tablet of Vitamin D (200 International Units) daily for 60 days. Each patient will go to the hospital in order to take the blood sample.
Dietary supplement: VitaminD
200 International Units (oral dose) daily of 60 days

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Determination of cytokines
Time Frame: 6 months
First, we are going to separate the peripheral blood mononuclear cells with Ficoll reagent. Cells were adjusted and placed in 1 mL tubes, with an antibody will be incubated for 15 min. at room temperature. Anti-antibody corresponding isotypes are going to incubate for 20 min at room temperature. The cells are going to be fixed with 1% paraformaldehyde before acquiring and analyzing in the flow cytometer. The concentration of Interleucin 17 (IL-17), Interferon-g and Tumor Necrosis Factor-a in culture supernatants of infected cells in vitro with M.tuberculosis are going to be measure. We are going to determinate them by ELISA.
6 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Instituto Nacional de Enfermedades Respiratorias

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Edith Escudero, Degree, Instituto Nacional De Enfermedades Respiratorias

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2014

Primary Completion (Anticipated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 1, 2015

Study Completion (Anticipated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2016

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 12, 2014

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 3, 2015

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 8, 2015

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 8, 2015

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 3, 2015

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
March 1, 2015

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • INERC50-13

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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