Measurement, variation, and scaling of osteocyte lacunae: a case study in birds

D’Emic, Michael D.; Benson, Roger B. J.

doi:10.1016/j.bone.2013.08.010

Cited by 34 publications

(61 citation statements)

References 54 publications

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“…Other studies have shown that the cells of fly wings, eyes, and basitarus increase in size with an increase in body length [51,52]. Osteocyte size in birds also increases with body size, with a scaling coefficient of 0.128, similar to the scaling coefficient of the gradient width found here [53]. These studies imply that an increase in cell size may explain the relatively small change in gradient width; however, measurements by Breur et al show that although hypertrophic chondrocyte size increases with longitudinal bone growth in individual rats and pigs, it does not vary between species [54].…”

Section: Resultssupporting

confidence: 85%

Allometry of the Tendon Enthesis: Mechanisms of Load Transfer Between Tendon and Bone

Deymier-Black

Pasteris²,

Genin

et al. 2015

Journal of Biomechanical Engineering

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Several features of the tendon-to-bone attachment were examined allometrically to determine load transfer mechanisms. The humeral head diameter increased geometrically with animal mass. Area of the attachment site exhibited a near isometric increase with muscle physiological cross section. In contrast, the interfacial roughness as well as the mineral gradient width demonstrated a hypoallometric relationship with physiologic cross-sectional area (PCSA). The isometric increase in attachment area indicates that as muscle forces increase, the attachment area increases accordingly, thus maintaining a constant interfacial stress. Due to the presence of constant stresses at the attachment, the micrometer-scale features may not need to vary with increasing load.

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Section: Resultssupporting

confidence: 85%

Allometry of the Tendon Enthesis: Mechanisms of Load Transfer Between Tendon and Bone

Deymier-Black

Pasteris²,

Genin

et al. 2015

Journal of Biomechanical Engineering

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“…Just as the number of neurons and their connectivity provide insight into the information processing capacity of the human brain [65,67], the large number of osteocytes suggests that the network formed by the osteocytes could also transmit extensive information via cell-cell contact or paracrine mechanisms. Continuing work to identify whether the extent of the network varies across species, including extinct species, may also provide insights into how this network complexity has evolved [68][69][70][71]. Finally, as mathematical models of the biomechanical regulation of the skeleton become more comprehensive [49,[72][73][74][75][76][77][78][79][80][81], valid quantifications of the osteocyte network from the cellular to the whole organ scale will allow realistic predictions of this complex dynamic system and its emergent behaviours [82,83].…”

Section: Discussionmentioning

confidence: 99%

Quantifying the osteocyte network in the human skeleton

Buenzli

Sims

2015

Bone

234

174

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“…for Marmorerpeton and femora for extant taxa) to minimize the loss of precision that bone identity or the section plane introduces into paleogenomic size estimates (D'Emic and Benson, 2013;Montanari et al, 2011;Stein and Prondvai, 2014). We could not use the same bone throughout the analysis because of limitations in the available material.…”

Section: Newly Studied Urodele Materialsmentioning

confidence: 99%

Early genome size increase in urodeles

Laurin

Canoville

Struble

et al. 2016

Comptes Rendus Palevol

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a b s t r a c tUrodeles have the largest genomes among extant tetrapods, varying greatly between metamorphic and neotenic species, which have the smallest and the largest genomes of the group, respectively. The evolutionary tempo and mode of genome size expansion in urodeles are poorly documented, especially because genome size does not directly fossilize. Consequently, the ancestral state for genome size, and therefore, the polarity of its evolution in urodeles are uncertain. However, recent studies have demonstrated that osteocyte (lacuna) size is correlated with genome size. Below, we present histological data, on osteocyte lacuna size from one of the oldest known stem-urodeles, Marmorerpeton, from the Middle Jurassic (Bathonian,(166)(167)(168), as well as on five extant urodele species. Our analysis of these taxa, coupled with previously published data, suggests that stem-urodeles had already evolved large genomes, typical of extant urodeles by the Bathonian.

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Measurement, variation, and scaling of osteocyte lacunae: a case study in birds

Cited by 34 publications

References 54 publications

Allometry of the Tendon Enthesis: Mechanisms of Load Transfer Between Tendon and Bone

Allometry of the Tendon Enthesis: Mechanisms of Load Transfer Between Tendon and Bone

Quantifying the osteocyte network in the human skeleton

Early genome size increase in urodeles

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