Subclinical Hypothyroidism and Mind in the Elderly

NCT ID: NCT00921050

Last Updated: 2012-06-28

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE2/PHASE3

Total Enrollment

70 participants

Study Classification

INTERVENTIONAL

Study Start Date

2009-06-30

Study Completion Date

2012-03-31

Brief Summary

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Some recommendations of expert consensus on subclinical hypothyroidism (SH) are controversial in those areas with not enough information to reach a conclusion, such as not recommending treatment with thyrotrophic hormone of 4-10 mUI/L and free thyroxin in normal range. The body changes or symptoms at this stage are often mistaken as aging. There are studies showing significant changes in heart (slow rate, lower ejection fraction, diastolic dysfunction); hypercholesterolemia, dysfunction cognitive abilities (memory attention…).

The prevalence of SH increases with age, reaching 14% over 65 years old. This age group increase as the population ages highlights the need for evidence to improve recommendations for the elderly.

NEUROPSI is a validated neuropsychological test sensible for mild cognitive alterations. It can be applied to individuals with little schooling.

This study aims to determine positive change in cognitive abilities (NEUROPSI), ejection fraction, and body percent of lean and adipose tissue without adverse effects, placebo versus thyroxin supplement to keep thyroid-stimulating hormone (TSH) between 0.5-2.5 mUI/L in elderly with TSH 4-10 mIU/L.

Detailed Description

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Screening, subjects \> 59 y/o with out exclusion criteria to identify HS, started in October 15, 2008. Due to difficulties getting the placebo for the assay, by January halted the screening. At the end of May we got the donation from Merck pharmaceuticals.

The protocol original dates changed as follows:

* Restart screening June 20 to end in August 2009;
* Enrolling start at the end of June (the already identified);
* End enrolling October 2009;
* Follow up will end in May 2010.

Note: 150 of the screened subjects will be from randomly selected homes at Fomerrey 19 to allow prevalence estimation.

* Enroling ended until june 2010
* Follow up stil ungoing final measures will be done at the end of 2011

Conditions

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Subclinical Hypothyroidism

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Outcome Assessors

Study Groups

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Levothyroxine

Half of participants randomly assigned, take a pill daily, bimonthly thyroid test

Group Type EXPERIMENTAL

levothyroxine sodium

Intervention Type DRUG

Daily intake (fasting) levothyroxine bimonthly adjusted; to keep TSH between 0.5 to 2.5 mUI/L range. Start with 12.5mcg an investigator other than the caregiver will review the TSH measurements to adjust levothyroxine dose that will contain the coded bottle with the pils given to patient.

Placebo

Half of participants randomly assigned, take a pill daily, bimonthly thyroid test

Group Type PLACEBO_COMPARATOR

excipient without levothyroxine (placebo)

Intervention Type DRUG

Daily intake (fasting) a pill. bimonthly adjusted; an investigator other than the caregiver will review the TSH measurements and pretend to adjust dose contained in the coded bottle with the pills given to patient.

Interventions

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levothyroxine sodium

Daily intake (fasting) levothyroxine bimonthly adjusted; to keep TSH between 0.5 to 2.5 mUI/L range. Start with 12.5mcg an investigator other than the caregiver will review the TSH measurements to adjust levothyroxine dose that will contain the coded bottle with the pils given to patient.

Intervention Type DRUG

excipient without levothyroxine (placebo)

Daily intake (fasting) a pill. bimonthly adjusted; an investigator other than the caregiver will review the TSH measurements and pretend to adjust dose contained in the coded bottle with the pills given to patient.

Intervention Type DRUG

Other Intervention Names

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eutirox (Merck) synthroid sugar pills

Eligibility Criteria

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Inclusion Criteria

* TSH between 4 and 10 mUI/L inclusive

Exclusion Criteria

* Known and treatment of thyroideal disease
* Arrythmia
* Anticoagulant treatment
* Dementia
* Disease leading to dementia (acv, LIVER....)
Minimum Eligible Age

60 Years

Maximum Eligible Age

95 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Universidad Autonoma de Nuevo Leon

OTHER

Sponsor Role lead

Responsible Party

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Lilia Csrdenas-Ibarra

MD

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Lilia Cardenas-Ibarra, M.D.

Role: PRINCIPAL_INVESTIGATOR

Endocrinology, University Hospital, Universidad Autonoma de Nuevo Leon

Jesus Z Villarreal-Perez, M.D.

Role: STUDY_CHAIR

Endocrinology, University Hospital, Universidad Autonoma de Nuevo Leon

Locations

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Endocrinology, Outpatient Hospital Clinic

Monterrey, Nuevo León, Mexico

Site Status

Community Health Center (Fomerrey 19)

Monterrey, Nuevo León, Mexico

Site Status

Countries

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Mexico

Other Identifiers

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EN_LC_P136

Identifier Type: -

Identifier Source: org_study_id

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