Age-related changes in craniofacial morphology in GDF-8 (myostatin)-deficient mice

Lisa Vecchione, Jeffrey Miller, Craig Byron, Gregory M. Cooper, Timothy Barbano, James Cray, Joseph E. Losee, Mark W Hamrick, James J. Sciote, Mark P. Mooney

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

It is well recognized that masticatory muscle function helps determine morphology, although the extent of function on final form is still debated. GDF-8 (myostatin), a transcription factor is a negative regulator of skeletal muscle growth. A recent study has shown that mice homozygous for the myostatin mutation had increased muscle mass and craniofacial dysmorphology in adulthood. However, it is unclear whether such dysmorphology is present at birth. This study examines the onset and relationship between hypermuscularity and craniofacial morphology in neonatal and adult mice with GDF-8 deficiency. Fifteen (8 wild-type and 7 GDF-8 -/-), 1-day-old and 16 (9 wt and 7 GDF-8 -/-), 180-day-old male CD-1 mice were used. Standardized radiographs were taken of each head, scanned, traced, and cephalometric landmarks identified. Significant mean differences were assessed using a group x age, two-way ANOVA. Myostatin-deficient mice had significantly (P < 0.01) smaller body and masseter muscle weights and craniofacial skeletons at 1 day of age and significantly greater body and masseter muscle weights at 180 days of age compared to controls. Myostatin-deficient mice showed significantly (P < 0.001) longer and "rocker-shaped" mandibles and shorter and wider crania compared to controls at 180 days. Significant correlations were noted between masseter muscle weight and all cephalometric measurements in 180-day-old Myostatin-deficient mice. Results suggest that in this mouse model, there may be both early systemic skeletal growth deficiencies and later compensatory changes from hypermuscularity. These findings reiterate the role that masticatory muscle function plays on the ontogeny of the cranial vault, base, and most notably the mandible.

Original languageEnglish (US)
Pages (from-to)32-41
Number of pages10
JournalAnatomical Record
Volume293
Issue number1
DOIs
StatePublished - Jan 1 2010

Fingerprint

Myostatin
myostatin
muscle
muscles
mice
Masseter Muscle
Cephalometry
Masticatory Muscles
Mandible
Weights and Measures
Growth Differentiation Factor 1
cranium
adulthood
skeleton
skeletal muscle
ontogeny
transcription factors
analysis of variance
animal models
Skull Base

Keywords

  • Craniofacial growth
  • GDF-8
  • Mice
  • Morphology
  • Myostatin

ASJC Scopus subject areas

  • Anatomy
  • Biotechnology
  • Histology
  • Ecology, Evolution, Behavior and Systematics

Cite this

Vecchione, L., Miller, J., Byron, C., Cooper, G. M., Barbano, T., Cray, J., ... Mooney, M. P. (2010). Age-related changes in craniofacial morphology in GDF-8 (myostatin)-deficient mice. Anatomical Record, 293(1), 32-41. https://doi.org/10.1002/ar.21024

Age-related changes in craniofacial morphology in GDF-8 (myostatin)-deficient mice. / Vecchione, Lisa; Miller, Jeffrey; Byron, Craig; Cooper, Gregory M.; Barbano, Timothy; Cray, James; Losee, Joseph E.; Hamrick, Mark W; Sciote, James J.; Mooney, Mark P.

In: Anatomical Record, Vol. 293, No. 1, 01.01.2010, p. 32-41.

Research output: Contribution to journalArticle

Vecchione, L, Miller, J, Byron, C, Cooper, GM, Barbano, T, Cray, J, Losee, JE, Hamrick, MW, Sciote, JJ & Mooney, MP 2010, 'Age-related changes in craniofacial morphology in GDF-8 (myostatin)-deficient mice', Anatomical Record, vol. 293, no. 1, pp. 32-41. https://doi.org/10.1002/ar.21024
Vecchione L, Miller J, Byron C, Cooper GM, Barbano T, Cray J et al. Age-related changes in craniofacial morphology in GDF-8 (myostatin)-deficient mice. Anatomical Record. 2010 Jan 1;293(1):32-41. https://doi.org/10.1002/ar.21024
Vecchione, Lisa ; Miller, Jeffrey ; Byron, Craig ; Cooper, Gregory M. ; Barbano, Timothy ; Cray, James ; Losee, Joseph E. ; Hamrick, Mark W ; Sciote, James J. ; Mooney, Mark P. / Age-related changes in craniofacial morphology in GDF-8 (myostatin)-deficient mice. In: Anatomical Record. 2010 ; Vol. 293, No. 1. pp. 32-41.
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