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Effect of Short Term Growth Hormone Releasing Hormone in Healthy Men

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ClinicalTrials.gov Identifier: NCT00850564
Recruitment Status : Completed
First Posted : February 25, 2009
Results First Posted : March 30, 2011
Last Update Posted : April 19, 2011
Sponsor:
Collaborator:
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Information provided by:
Massachusetts General Hospital

Study Description
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Brief Summary:
The purpose of this trial is to examine the short-term effects of Growth Hormone Releasing Hormone (GHRH, tesamorelin) administration in healthy men. We hypothesize that GHRH will increase GH pulse height and will not affect insulin sensitivity.

Condition or disease Intervention/treatment Phase
Healthy Volunteers Drug: Growth Hormone Releasing Hormone (Tesamorelin) Not Applicable

Detailed Description:
The primary objective of this study is to determine the effects of growth hormone releasing hormone (Tesamorelin) on endogenous overnight growth hormone secretion and pulsatility, as well as insulin-stimulated glucose uptake. Healthy male subjects will receive 2mg Tesamorelin, subcutaneously, daily for two weeks. At baseline and after two weeks of treatment, we will assess overnight growth hormone by frequent sampling as well as insulin stimulated glucose uptake by clamp. Subjects will then stop the Tesamorelin and will return for an identical assessment after a 2 week withdrawal period.
Study Design
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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 15 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Effect of Short Term Growth Hormone Releasing Hormone in Healthy Men
Study Start Date : February 2009
Actual Primary Completion Date : April 2010
Actual Study Completion Date : April 2010

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Hormones

Arms and Interventions
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Arm Intervention/treatment
Experimental: Growth Hormone Releasing Hormone
Growth Hormone Releasing Hormone (Tesamorelin) 2mg by subcutaneous injection once daily
 Drug: Growth Hormone Releasing Hormone (Tesamorelin)
Tesamorelin 2mg subcutaneous daily x 2 weeks
Other Name: Tesamorelin


Outcome Measures
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Primary Outcome Measures :
  1. Mean Overnight Growth Hormone [ Time Frame: at 2 weeks (i.e., after 2 weeks of treatment) ]
    Outcome is mean overnight growth hormone at 2 weeks (i.e., following 2 weeks of treatment with growth hormone releasing hormone). Growth hormone was measured overnight (from 8pm-7:40am) by frequent blood sampling, and the mean is the average of these frequent measurements. The mean measurement at 2 weeks is given here, and, in the statistics section, is statistically compared with the mean measurement before treatment.


Secondary Outcome Measures :
  1. Insulin Stimulated Glucose Utilization [ Time Frame: at 2 weeks (i.e., after 2 weeks of treatment) ]
    Insulin stimulated glucose uptake (M) is the amount of glucose (measured in mg per kg body weight per minute) taken up during the steady state period of a euglycemic hyperinsulinemic clamp. This measure was calculated for minutes 100-120 of euglycemic hyperinsulinemic clamp procedure at 2 weeks (i.e., after 2 weeks treatment with growth hormone releasing hormone). The measurement at 2 weeks is given here, and, in the statistics section, is statistically compared with the measurement before treatment.


Eligibility Criteria
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Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Men aged 18-60 years
  • BMI > 20kg/m2 and <35kg/m2

Exclusion Criteria:

  • Use of anti-diabetic agents, Megace, testosterone or any steroid use within 6 months of the study
  • Use of GH or growth hormone stimulating peptides within six months of starting the study
  • Change in lipid lowering or antihypertensive regimen within 3 months of screening
  • Fasting blood sugar > 126 mg/dL, SGOT > 2.5 times ULN, Hgb < 12.0 g/dL, creatinine > 1.4 mg/dL
  • Carpal tunnel syndrome
  • Severe chronic illness or active malignancy or history of pituitary malignancy or history of colon cancer
  • For men, history of prostate cancer or evidence of prostate malignancy by PSA > 5 ng/mL
  • Prior history of hypopituitarism, head irradiation or any other condition known to affect the GH axis
  • Weight < 110 lbs.
Contacts and Locations
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Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00850564


Locations
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United States, Massachusetts
MGH
Boston, Massachusetts, United States, 02114
Sponsors and Collaborators
Massachusetts General Hospital
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Investigators
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Principal Investigator: Steven K Grinspoon, M.D. Massachusetts General Hospital
More Information
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Publications of Results:

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):

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Responsible Party: Steven K. Grinspoon, MD, Massachusetts General Hospital
ClinicalTrials.gov Identifier: NCT00850564    
Other Study ID Numbers: DK63639B
R01DK063639 ( U.S. NIH Grant/Contract )
First Posted: February 25, 2009    Key Record Dates
Results First Posted: March 30, 2011
Last Update Posted: April 19, 2011
Last Verified: April 2011
Keywords provided by Massachusetts General Hospital:
growth hormone releasing hormone
Additional relevant MeSH terms:
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Hormones
Growth Hormone-Releasing Hormone
Tesamorelin
 Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Growth Substances