Adenosylmethionine Metabolism in Human Inflammation

August 6, 2015 updated by: En-Pei Isabel Chiang, National Chung Hsing University

Translational Study on the Regulation of Adenosylmethionine Synthesis During Chronic Inflammation

The investigators propose to conduct a translational study on the regulation of S-adenosylmethionine synthesis and cellular methylation reactions during chronic inflammation. Development of in vitro cell models may reveal the regulatory mechanisms by which specific inflammatory mediators cause metabolic changes and alter DNA methylation status. Metabolic and pharmacological studies in the in vivo models will enable us to better understand the regulation of inter-organ homeostasis of S-adenosyl methionine and help identify tissue specific biomarkers for methylation and epigenetic modifications in different stage of chronic inflammation. The clinical study in human subjects will help distinguish the impacts of autoimmune rheumatic disease, degenerated joint disease, or specific medication use on significant clinical and biochemical markers in folate and vitamin B6 metabolic pathways.The Investigators hope the present study can identify specific clinical markers for potential epigenetic changes in patients suffering from chronic inflammation, which will contribute to better clinical management of these diseases in humans.

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.

Detailed Description

The significance of epigenetic alterations in autoimmune rheumatic diseases and degenerated joint diseases has drawn great attention among clinicians and researchers. Aberrant methylation status has been demonstrated in human chronic inflammation yet more efforts have focused on global and sequence-specific hypomethylation and overexpression of specific genes. Few studies investigated the regulation of S-adenosylmethionine homeostasis and regulation during inflammation. At present the relevance and regulation of the complex epigenetic profiles and their modifications among different tissues and organs during inflammation remain largely unknown.

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.
Observational

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.
250

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 80 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

patients with arthritis or healthy adults

Description

Inclusion Criteria:

  • > 18 years

Exclusion Criteria:

  • pregnancy,
  • anemia (hemoglobin 10 mg/dL or lower),
  • thrombocytopenia (platelet count below 50,000 cells/μL),
  • abnormal serum hepatic transaminase (aspartate aminotransferase or alanine aminotransferase above 50 IU/L),
  • diabetes or cancer

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?

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Arthritis
subjects with arthritis
Health control subjects
Health control

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
s-adenosylmethionine
Time Frame: Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
homocysteine
Time Frame: Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
folate
Time Frame: Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
vitamin B6
Time Frame: Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Some participants were followed for 4wks if medication was changed by the doctor

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
blood amino acid profile (serine, glycine, methionine,cysteine, cystathionine, dimethylglycine)
Time Frame: Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
gene expression of target enzymes in PBMCs
Time Frame: Blood were collected at admission.Blood were dawn again 1mo later if his medication was changed by the doctor
blood samples were collected and stored for later analyses
Blood were collected at admission.Blood were dawn again 1mo later if his medication was changed by the doctor
enzyme activities of S-adenosylmethionine synthase in RBC
Time Frame: Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
vitamin B6 metabolic enzyme in RBC
Time Frame: Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
blood samples were collected and stored for later analyses of above metabolites
Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
polymorphisms in one carbon metabolism enzymes in PBMCs
Time Frame: Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor
blood samples were collected and stored for later analyses
Blood were collected at admission. Blood were dawn again 1mo later if his medication was changed by the doctor

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.
National Chung Hsing University

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
National Science Council, Taiwan
Ministry of Science and Technology, Taiwan

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.
  • Principal Investigator: En-Pei I Chiang, PhD, Department of Food Science and Biotechnology, National Chung Hsing University

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.
January 1, 2011

Primary Completion (Actual)

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.
July 1, 2014

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.
August 1, 2015

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).
July 28, 2015

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.
August 6, 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.
August 11, 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.
August 11, 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.
August 6, 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.
August 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.
  • SF11093

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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