Brief communication: Ectocranial suture closure in Pongo: Pattern and phylogeny

Cray, James J.; Cooper, Gregory M.; Mooney, Mark P.; Siegel, Michael I.

doi:10.1002/ajpa.21367

Cited by 8 publications

(13 citation statements)

References 47 publications

(61 reference statements)

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“…In addition, all scales exhibited strong reproducibility statistics suggesting homogeneity. Overall, the lateral‐anterior patterns of suture fusion were most homogenous, compared with the vault suture patterns within the Aleutian populations, similar to standards reported for Homo sapiens (Meindl and Lovejoy, 1985), and other Hominoids (Cray et al, 2008, 2010). The suture synostosis patterns reported here, although similar, differ slightly compared with standards reported in the literature (Meindl and Lovejoy, 1985).…”

Section: Discussionsupporting

confidence: 81%

“…Guttman scaling was used to determine the most commonly occurring patterns of ectocranial suture synostosis for commencement and termination, for those remains identified as Aleut, Paleo‐Aleut, and the collection combined. These results were compared with published standards for Homo sapiens ectocranial suture fusion progression (Table 2 ) (Meindl and Lovejoy, 1985; Cray et al, 2008, 2010). The Guttman approach assesses the likelihood of unidimensionality, a notion best assessed by the summary measure, CR, the coefficient of reproducibility.…”

Section: Methodsmentioning

confidence: 99%

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Cranial Suture Biology of the Aleutian Island Inhabitants

Cray

Mooney

Siegel

2011

The Anatomical Record

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Research on cranial suture biology suggests there is biological and taxonomic information to be garnered from the heritable pattern of suture synostosis. Suture synostosis along with brain growth patterns, diet, and biomechanical forces influence phenotypic variability in cranial vault morphology. This study was designed to determine the pattern of ectocranial suture synostosis in skeletal populations from the Aleutian Islands. We address the hypothesis that ectocranial suture synostosis pattern will differ according to cranial vault shape. Ales Hrdlicka identified two phenotypes in remains excavated from the Aleutian Island. The Paleo-Aleutians, exhibiting a dolichocranic phenotype with little prognathism linked to artifacts distinguished from later inhabitants, Aleutians, who exhibited a brachycranic phenotype with a greater amount of prognathism. A total of 212 crania representing Paleo-Aleuts and Aleutian as defined by Hrdlicka were investigated for suture synostosis pattern following standard methodologies. Comparisons were performed using Guttmann analyses. Results revealed similar suture fusion patterns for the Paleo-Aleut and Aleutian, a strong anterior to posterior pattern of suture fusion for the lateral-anterior suture sites, and a pattern of early termination at the sagittal suture sites for the vault. These patterns were found to differ from that reported in the literature. Because these two populations with distinct cranial shapes exhibit similar patterns of suture synostosis it appears pattern is independent of cranial shape in these populations of Homo sapiens. These findings suggest that suture fusion patterns may be population dependent and that a standardized methodology, using suture fusion to determine age-at-death, may not be applicable to all populations. Anat Rec, 294:676-682, 2011. V V C 2011 Wiley-Liss, Inc.

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Section: Discussionsupporting

confidence: 81%

Section: Methodsmentioning

confidence: 99%

Cranial Suture Biology of the Aleutian Island Inhabitants

Cray

Mooney

Siegel

2011

The Anatomical Record

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“…At day 7, there were longer and bigger finger-like bones formed on the nasal side of expanded sutures compared with the oral side. This phenomenon may help to explain that the sutures have different timing of closure [31–34], which is referred to as the “zipper” mechanism of sutural closure where fusing occurred first on one side of the suture [35]. Why there were more new finger-like bones forming on the nasal section of suture than the oral section is open to question.…”

Section: Discussionmentioning

confidence: 99%

Stretch force guides finger-like pattern of bone formation in suture

Kou

Zhang

et al. 2017

PLoS ONE

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Mechanical tension is widely applied on the suture to modulate the growth of craniofacial bones. Deeply understanding the features of bone formation in expanding sutures could help us to improve the outcomes of clinical treatment and avoid some side effects. Although there are reports that have uncovered some biological characteristics, the regular pattern of sutural bone formation in response to expansion forces is still unknown. Our study was to investigate the shape, arrangement and orientation of new bone formation in expanding sutures and explore related clinical implications. The premaxillary sutures of rat, which histologically resembles the sutures of human beings, became wider progressively under stretch force. Micro-CT detected new bones at day 3. Morphologically, these bones were forming in a finger-like pattern, projecting from the maxillae into the expanded sutures. There were about 4 finger-like bones appearing on the selected micro-CT sections at day 3 and this number increased to about 18 at day 7. The average length of these projections increased from 0.14 mm at day 3 to 0.81 mm at day 7. The volume of these bony protuberances increased to the highest level of 0.12 mm3 at day 7. HE staining demonstrated that these finger-like bones had thick bases connecting with the maxillae and thin fronts stretching into the expanded suture. Nasal sections had a higher frequency of finger-like bones occuring than the oral sections at day 3 and day 5. Masson-stained sections showed stretched fibers embedding into maxillary margins. Osteocalcin-positive osteoblasts changed their shapes from cuboidal to spindle and covered the surfaces of finger-like bones continuously. Alizarin red S and calcein deposited in the inner and outer layers of finger-like bones respectively, which showed that longer and larger bones formed on the nasal side of expanded sutures compared with the oral side. Interestingly, these finger-like bones were almost paralleling with the direction of stretch force. Inclined force led to inclined finger-like bones formation and deflection of bilateral maxillae. Additionally, heavily compressive force caused fracture of finger-like bones in the sutures. These data together proposed the special finger-like pattern of bone formation in sutures guided by stretch force, providing important implications for maxillary expansion.

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“…Recent research on cranial suture biology has suggested there is biological and taxonomic information to be garnered from the heritable pattern of suture synostosis (Falk et al, ; Wang et al, ,; Cray et al, , , ; Wilson and Sanchez‐Villagra, ). Along with brain growth patterns, diet, and biomechanical forces, suture synostosis can influence phenotypic variability in cranial vault morphology (Moss and Young, ; Moss, ; Moss and Salentijn, ; Enlow and Hans, ; Herring and Teng, ; Mao, ; Fong et al, ; Byron et al, , ; Alaqeel et al, ; Byron, , ; Sardi et al, ; Herring, ; Yu et al, ).…”

Section: Introductionmentioning

confidence: 99%

“…Along with brain growth patterns, diet, and biomechanical forces, suture synostosis can influence phenotypic variability in cranial vault morphology (Moss and Young, ; Moss, ; Moss and Salentijn, ; Enlow and Hans, ; Herring and Teng, ; Mao, ; Fong et al, ; Byron et al, , ; Alaqeel et al, ; Byron, , ; Sardi et al, ; Herring, ; Yu et al, ). Investigations concerning calvarial suture fusion have rarely concentrated on a phylogenetic perspective, with notable exceptions (Krogman, ; Chopra, ; Dolan, ; Brunner et al, ; Cray et al, , ; Bärmann and Sánchez‐Villagra, ; Flores and Barone, ; Goswami et al, ). This research has suggested intraspecies homogeneity in patterns, both for timing of suture fusion as well as general architectural pattern by which it occurs (Krogman, ; Chopra, ; Wang et al, ; Cray et al, , , ).…”

Section: Introductionmentioning

confidence: 99%

Ectocranial suture fusion in primates: pattern and phylogeny

Cray

Cooper

Mooney

et al. 2013

Journal of Morphology

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Patterns of ectocranial suture fusion among Primates are subject to species-specific variation. In this study, we used Guttman Scaling to compare modal progression of ectocranial suture fusion among Hominidae (Homo, Pan, Gorilla, and Pongo), Hylobates, and Cercopithecidae (Macaca and Papio) groups. Our hypothesis is that suture fusion patterns should reflect their evolutionary relationship. For the lateral-anterior suture sites there appear to be three major patterns of fusion, one shared by Homo-Pan-Gorilla, anterior to posterior; one shared by Pongo and Hylobates, superior to inferior; and one shared by Cercopithecidae, posterior to anterior. For the vault suture pattern, the Hominidae groups reflect the known phylogeny. The data for Hylobates and Cercopithecidae groups is less clear. The vault suture site termination pattern of Papio is similar to that reported for Gorilla and Pongo. Thus, it may be that some suture sites are under larger genetic influence for patterns of fusion, while others are influenced by environmental/biomechanic influences.

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Brief communication: Ectocranial suture closure in Pongo: Pattern and phylogeny

Cited by 8 publications

References 47 publications

Cranial Suture Biology of the Aleutian Island Inhabitants

Cranial Suture Biology of the Aleutian Island Inhabitants

Stretch force guides finger-like pattern of bone formation in suture

Ectocranial suture fusion in primates: pattern and phylogeny

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