Metabolic Effects of Steroids in Obese Men

NCT ID: NCT00983554

Last Updated: 2011-03-16

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

UNKNOWN

Clinical Phase

NA

Total Enrollment

57 participants

Study Classification

INTERVENTIONAL

Study Start Date

2005-06-30

Study Completion Date

2009-10-31

Brief Summary

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Subjects will be randomized into 4 study groups: 1. Placebo; 2. Anastrazole and Testosterone; 3. Dutasteride and Testosterone; and 4. Testosterone only. A 2 step euglycemic clamp, body composition by dual X-ray absorptiometry scan, hormone and lipid assays will be performed to monitor metabolic effects of each treatment group. We hypothesize that increasing testosterone levels would increase lean mass, decrease fat mass and improve insulin sensitivity. We further hypothesize that improvements in the metabolic profile would decrease with anastrazole and improve with dutasteride, given in conjunction with T administration.

Detailed Description

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Conditions

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Obesity Insulin Resistance

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Placebo

Group Type NO_INTERVENTION

No interventions assigned to this group

Anastrazole and Testosterone

Group Type EXPERIMENTAL

Anastrazole

Intervention Type DRUG

Arimidex 1mg daily

Testosterone

Intervention Type DRUG

Testim 10g daily

Dutasteride

Intervention Type DRUG

Avodart 2.5mg daily

GnRH antagonist

Intervention Type DRUG

Acyline 300 µg/kg subcutaneous injections every 2 weeks

Dutasteride and Testosterone

Group Type EXPERIMENTAL

Testosterone

Intervention Type DRUG

Testim 10g daily

Dutasteride

Intervention Type DRUG

Avodart 2.5mg daily

GnRH antagonist

Intervention Type DRUG

Acyline 300 µg/kg subcutaneous injections every 2 weeks

Testosterone

Group Type EXPERIMENTAL

Testosterone

Intervention Type DRUG

Testim 10g daily

Dutasteride

Intervention Type DRUG

Avodart 2.5mg daily

GnRH antagonist

Intervention Type DRUG

Acyline 300 µg/kg subcutaneous injections every 2 weeks

Interventions

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Anastrazole

Arimidex 1mg daily

Intervention Type DRUG

Testosterone

Testim 10g daily

Intervention Type DRUG

Dutasteride

Avodart 2.5mg daily

Intervention Type DRUG

GnRH antagonist

Acyline 300 µg/kg subcutaneous injections every 2 weeks

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* free T level in the lower 25% of the normal range or below
* BMI ≥30kg/m2
* waist circumference ≥100cm

Exclusion Criteria

* pituitary tumors
* HIV infection
* Klinefelter's syndrome
* Kallman's syndrome
* uncontrolled hypertension
* diabetes
* congestive heart failure
* chronic lung disease
* acute coronary syndrome
* PSA \>4µg/L
* aspartate aminotransferase (AST)\> 3x upper limit of normal
* use of medications that might affect weight loss, muscle or bone metabolism or androgen metabolism, action or clearance.
* involvement in daily resistance training or high endurance exercise
* alcohol or drug dependence
* obstructive sleep apnea
Minimum Eligible Age

24 Years

Maximum Eligible Age

51 Years

Eligible Sex

MALE

Accepts Healthy Volunteers

Yes

Sponsors

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University of California, San Diego

OTHER

Sponsor Role collaborator

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)

NIH

Sponsor Role lead

Responsible Party

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University of California, San Diego

Principal Investigators

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Karen L Herbst, PhD, MD

Role: PRINCIPAL_INVESTIGATOR

University of California, San Diego

Locations

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University of California, San Diego

San Diego, California, United States

Site Status

VA San Diego Healthcare System

San Diego, California, United States

Site Status

Countries

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United States

References

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Marin P, Holmang S, Gustafsson C, Jonsson L, Kvist H, Elander A, Eldh J, Sjostrom L, Holm G, Bjorntorp P. Androgen treatment of abdominally obese men. Obes Res. 1993 Jul;1(4):245-51. doi: 10.1002/j.1550-8528.1993.tb00618.x.

Reference Type BACKGROUND
PMID: 16350577 (View on PubMed)

Marin P, Holmang S, Jonsson L, Sjostrom L, Kvist H, Holm G, Lindstedt G, Bjorntorp P. The effects of testosterone treatment on body composition and metabolism in middle-aged obese men. Int J Obes Relat Metab Disord. 1992 Dec;16(12):991-7.

Reference Type BACKGROUND
PMID: 1335979 (View on PubMed)

DeFronzo RA, Tobin JD, Andres R. Glucose clamp technique: a method for quantifying insulin secretion and resistance. Am J Physiol. 1979 Sep;237(3):E214-23. doi: 10.1152/ajpendo.1979.237.3.E214.

Reference Type BACKGROUND
PMID: 382871 (View on PubMed)

Kapoor D, Goodwin E, Channer KS, Jones TH. Testosterone replacement therapy improves insulin resistance, glycaemic control, visceral adiposity and hypercholesterolaemia in hypogonadal men with type 2 diabetes. Eur J Endocrinol. 2006 Jun;154(6):899-906. doi: 10.1530/eje.1.02166.

Reference Type BACKGROUND
PMID: 16728551 (View on PubMed)

Other Identifiers

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DK65038 (completed)

Identifier Type: -

Identifier Source: org_study_id

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