Characterization of Transcriptional Regulators of Ghrelin Hormone Which Causes Genetic Obesity

Increased Density of Ghrelin-Expressing Cells in the Gastric Fundus and Body in Prader-Willi Syndrome

The problem point of the Prader-Willi Syndrome (PWS) patient is the obesity which is intense and the plasma ghrelin level which increases unusual from the recently PWS patients was discovered. The Ghrelin is endogeneous ligand of growth hormone secretagogue receptor with peptide hormone and the location is 3p26-p25. Becomes the secretion even from nervous system but from dignity X/A cell it is secreted mainly and growth is important even in the vagal control against food and intake and a dignity function even on the action outside which promotes the secretion which drives it operates. It increases food intake specially and in order to accomplish the action which diminishes fat utilization the obesity with the week cause which it does the mortar it is thought. Active the ghrelin of the form is essential in hormonal activity of the ghrelin and appetite and growth hormone it participates to the secretion promotion which drives. Action of the Ghrelin measuring the quantitative change in middle acylated of the PWS patient ghrelin in order to happen after the acylation initially by one interest ghrelin which is attempted the appetite of the PWS patient is is controlled the method it will be able to prove the thing directly, it used the RIA kit and the ELISA it will be able to measure kit it will be able to measure the whole ghrelin to pick the PWS patient and the blood of the normal army and active ghrelin it measured a change.

Study Overview

• Status: Completed
• Conditions: Obesity; Prader Willi Syndrome

Detailed Description

It will reach to respect, in 5 ' -flanking region of the ghrelin 2000 bp focus it let and it got luciferase assay it led and and it searched for the binding it sorted it put out and and to sleep the transcription factor which and and is the possibility of doing the essential region in the transcription and and it did an order deletion clone and and. is important in result and ghrelin activity the region role, -300~-200 region Basic helix-loop-helix (bHLH) are containing -USF (-236 to -231) binding site specially to be compressed in -500~-400 and -300~-200 two portions.

• Study Type: Observational
• Enrollment (Actual): 58

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 5 years to 11 years (Child)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Sixteen PWS patients [age, 8.1 +- 2.6 yr; 12 males, 4 females; body mass index (BMI), 25+-1.5 kg/m2], 19 healthy normal lean subjects (age, 8.9 +- 1.4 yr; 14 males, 5 females; BMI, 16.5 +- 0.42 kg/m2), 13 GHD patients (age, 9.1 +- 1.8 yr; 9 males, 4 females; BMI, 27 +- 1.8 kg/m2), and 10 healthy normal obese subjects (age, 8.7 +- 2.3 yr; 7 males, 3 females; BMI, 26 +- 1.7 kg/m2) were enrolled in the study. The subjects had no history of GH treatment and were not being treated with GH at study commencement.

Description

Inclusion Criteria:

• PWS patients were genetically confirmed using the standard methylation test. GHD was diagnosed using a GH stimulation test. The lean and obese normal subjects (comparison group) enrolled were the children or siblings of hospital staff who understood the purpose of and the procedures used.

Exclusion Criteria:

• GHD patients had no history of GH treatment, and were not being treated with GH at study commencement

Study Plan

How is the study designed?

Design Details

• Observational Models: Case-Control

Collaborators and Investigators

• Sponsor: Samsung Medical Center
• Investigators: Principal Investigator: Dong-Kyu Jin, M.D, Samsung Medical Center, Sungkyunkwan University School of Medicine

Study record dates

Study Major Dates

• Study Start: January 1, 2005
• Study Completion (Actual): December 1, 2006

Study Registration Dates

• First Submitted: July 26, 2011
• First Submitted That Met QC Criteria: July 27, 2011
• First Posted (Estimate): July 28, 2011

Study Record Updates

• Last Update Posted (Estimate): July 28, 2011
• Last Update Submitted That Met QC Criteria: July 27, 2011
• Last Verified: July 1, 2011

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Pathologic Processes; Nervous System Diseases; Neurologic Manifestations; Neurobehavioral Manifestations; Disease; Congenital Abnormalities; Overnutrition; Nutrition Disorders; Overweight; Body Weight; Genetic Diseases, Inborn; Intellectual Disability; Abnormalities, Multiple; Chromosome Disorders; Syndrome; Obesity; Prader-Willi Syndrome
• Other Study ID Numbers: 2007-01-016