Growth hormone receptor gene variant and three-dimensional mandibular morphology

Author:

Nakawaki Takatoshi1,Yamaguchi Tetsutaro2,Isa Mutsumi3,Kawaguchi Akira4,Tomita Daisuke1,Hikita Yu1,Suzuki-Tomoyasu Yoko5,Adel Mohamed5,Ishida Hajime6,Maki Koutaro7,Kimura Ryosuke8

Affiliation:

1. Graduate student, Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan.

2. Associate Professor, Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan.

3. Research Assistant, Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan.

4. Technical Staff, Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan.

5. Research Assistant, Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan.

6. Professor, Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan.

7. Professor, Department of Orthodontics, School of Dentistry, Showa University, Tokyo, Japan.

8. Associate Professor, Department of Human Biology and Anatomy, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan.

Abstract

ABSTRACT Objective: To examine the relationship between three-dimensional mandibular morphology and growth hormone receptor (GHR) gene variants in a healthy Japanese population. Materials and Methods: The subjects, who were unrelated Japanese orthodontic patients, consisted of 64 men and 114 women. Using the Taqman genotyping assay, GHR gene rs6184 and rs6180 variants were detected in genomic DNA extracted from saliva. Mandibular volume and length were measured from cone-beam computed tomography images that were analyzed using Analyze image-processing software. The relationship between GHR gene variants and three-dimensional mandibular morphology was statistically examined. Results: Statistical significance for the relationship between the distance between the left and right coronoid processes and rs6180 was noted (P < .05). Conclusion: Our results indicate that the GHR variant rs6180 is associated with the distance between the left and right coronoid process in the Japanese subjects.

Publisher

The Angle Orthodontist (EH Angle Education & Research Foundation)

Subject

Orthodontics

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