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Heritability of ret...
Heritability of retinal vascular fractals : A twin study
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- Vergmann, Anna Stage (författare)
- University of Southern Denmark,Odense University Hospital
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- Broe, Rebecca (författare)
- Odense University Hospital,University of Southern Denmark
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- Kessel, Line (författare)
- Copenhagen University Hospital,University of Copenhagen
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- Hougaard, Jesper Leth (författare)
- Lund University,Lunds universitet,Oftalmologi (Malmö),Forskargrupper vid Lunds universitet,Ophthalmology (Malmö),Lund University Research Groups
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- Möller Christensen, Sören, Sören (författare)
- University of Southern Denmark,Odense University Hospital
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- Kyvik, Kirsten Ohm (författare)
- Odense University Hospital,University of Southern Denmark
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- Larsen, Michael (författare)
- University of Copenhagen,Copenhagen University Hospital
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- Munch, Inger Christine (författare)
- University of Copenhagen,Zealand University Hospital
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- Grauslund, Jakob (författare)
- University of Southern Denmark,Odense University Hospital
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(creator_code:org_t)
- Association for Research in Vision and Ophthalmology (ARVO), 2017
- 2017
- Engelska 6 s.
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Ingår i: Investigative Ophthalmology and Visual Science. - : Association for Research in Vision and Ophthalmology (ARVO). - 0146-0404. ; 58:10, s. 3997-4002
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http://dx.doi.org/10... (free)
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https://doi.org/10.1...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- PURPOSE. To determine the genetic contribution to the pattern of retinal vascular branching expressed by its fractal dimension. METHODS. This was a cross-sectional study of 50 monozygotic and 49 dizygotic, same-sex twin pairs aged 20 to 46 years. In 50º, disc-centered fundus photographs, the retinal vascular fractal dimension was measured using the box-counting method and compared within monozygotic and dizygotic twin pairs using Pearson correlation coefficients. Falconer’s formula and quantitative genetic models were used to determine the genetic component of variation. RESULTS. The mean fractal dimension did not differ statistically significantly between monozygotic and dizygotic twin pairs (1.505 vs. 1.495, P = 0.06), supporting that the study population was suitable for quantitative analysis of heritability. The intrapair correlation was markedly higher (0.505, P = 0.0002) in monozygotic twins than in dizygotic twins (0.108, P = 0.46), corresponding to a heritability h2 for the fractal dimension of 0.79. In quantitative genetic models, dominant genetic effects explained 54% of the variation and 46% was individually environmentally determined. CONCLUSIONS. In young adult twins, the branching pattern of the retinal vessels demonstrated a higher structural similarity in monozygotic than in dizygotic twin pairs. The retinal vascular fractal dimension was mainly determined by genetic factors, which accounted for 54% of the variation. The genetically predetermination of the retinal vasculature may affect the retinal response to potential vascular disease in later life.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Oftalmologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Ophthalmology (hsv//eng)
Nyckelord
- Dizogotic
- Heredity
- Monozygotic
- Retinal vascular fractal dimension
- Twin
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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