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Calcaneal Tendon Collagen Fiber Morphometry and Aging
D. Hadraba, J. Janacek, E. Filova, F. Lopot, R. Paesen, O. Fanta, A. Jarman, A. Necas, M. Ameloot, K. Jelen,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
Grantová podpora
NV16-28637A
MZ0
CEP - Centrální evidence projektů
Digitální knihovna NLK
Plný text - Článek
NLK
ProQuest Central
od 2002-02-01 do 2022-12-31
Nursing & Allied Health Database (ProQuest)
od 2002-02-01 do 2022-12-31
Health & Medicine (ProQuest)
od 2002-02-01 do 2022-12-31
- MeSH
- Achillova šlacha cytologie růst a vývoj ultrastruktura MeSH
- biomechanika fyziologie MeSH
- extracelulární matrix fyziologie MeSH
- fibrilární kolageny metabolismus ultrastruktura MeSH
- konfokální mikroskopie MeSH
- králíci MeSH
- mikroskopie elektronová rastrovací MeSH
- pevnost v tahu fyziologie MeSH
- polarizační mikroskopie MeSH
- stárnutí fyziologie MeSH
- zvířata MeSH
- Check Tag
- králíci MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Fibrillar collagen in tendons and its natural development in rabbits are discussed in this paper. Achilles tendons from newborn (~7 days) to elderly (~38 months) rabbits were monitored in intact (n tendons=24) and microtome sectioned (n tendons=11) states with label-free second harmonic generation microscopy. After sectioning, the collagen fiber pattern was irregular for the younger animals and remained oriented parallel to the load axis of the tendon for the older animals. In contrast, the collagen fiber pattern in the intact samples followed the load axis for all the age groups. However, there was a significant difference in the tendon crimp pattern appearance between the age groups. The crimp amplitude (A) and wavelength (Λ) started at very low values (A=2.0±0.6 µm, Λ=19±4 µm) for the newborn animals. Both parameters increased for the sexually mature animals (>5 months old). When the animals were fully mature the amplitude decreased but the wavelength kept increasing. The results revealed that the microtome sectioning artifacts depend on the age of animals and that the collagen crimp pattern reflects the physical growth and development.
Citace poskytuje Crossref.org
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- $a Hadraba, Daniel $u 1Department of Biomathematics,Institute of Physiology,The Czech Academy of Sciences,Videnska 1083,Prague 4,14220,Czech Republic.
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- $a Fibrillar collagen in tendons and its natural development in rabbits are discussed in this paper. Achilles tendons from newborn (~7 days) to elderly (~38 months) rabbits were monitored in intact (n tendons=24) and microtome sectioned (n tendons=11) states with label-free second harmonic generation microscopy. After sectioning, the collagen fiber pattern was irregular for the younger animals and remained oriented parallel to the load axis of the tendon for the older animals. In contrast, the collagen fiber pattern in the intact samples followed the load axis for all the age groups. However, there was a significant difference in the tendon crimp pattern appearance between the age groups. The crimp amplitude (A) and wavelength (Λ) started at very low values (A=2.0±0.6 µm, Λ=19±4 µm) for the newborn animals. Both parameters increased for the sexually mature animals (>5 months old). When the animals were fully mature the amplitude decreased but the wavelength kept increasing. The results revealed that the microtome sectioning artifacts depend on the age of animals and that the collagen crimp pattern reflects the physical growth and development.
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- $a Janacek, Jiri $u 1Department of Biomathematics,Institute of Physiology,The Czech Academy of Sciences,Videnska 1083,Prague 4,14220,Czech Republic.
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