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Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie 2/2024

09-07-2022 | Trisomy 21 | Original Article

Anatomical and immunohistochemical analyses of the fusion of the premaxillary–maxillary suture in human fetuses

Authors: Ling Zhu, Wen-hua Ruan, Wu-qun Han, Wei-zhong Gu

Published in: Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie | Issue 2/2024

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Abstract

Purpose

The development of the premaxillary–maxillary suture (PMS) in human fetuses and a possible association between the fusion time of the PMS and maxillary deficiency were investigated. Expression of transforming growth factor beta (TGF-β1 and TGF-β3) and of fibulins (fibulin‑1 and fibulin-5) were also investigated.

Methods

We analyzed 36 human fetus cadavers (19 males, 17 females; average age 23.97 ± 2.57 gestational weeks [gws], range 11–35 gws). Two cases, diagnosed with Down syndrome (DS), were characterized with maxillary deficiency; 34 fetus cadavers did not show any craniofacial abnormalities. The PMS was analyzed anatomically, followed by semi-quantitative immunohistochemical (IHC)-based expression analyses (i.e., TGF-β1/-β3, fibulin-1/-5). Spearman correlation test was conducted to investigate correlations.

Results

In the fetuses without DS, the labial region of the PMS was open at 11 gws, after which it began to ossify from the middle to the upper and lower ends of the suture, typically fusing completely at 27 gws. Fetuses with DS demonstrated complete fusion of the labial region of PMS with a spongy bone structure at 23 gws and those without DS at 27 gws. IHC revealed similar patterns of TGF-βs and fibulins expression in the PMS during the human fetal period. There were significant positive correlations between the expression of TGF-β1 and TGF-β3 (r = 0.64, p = 0.009), TGF-β1 and fibulin‑1 (r = 0.66, p = 0.008), and TGF-β3 and fibulin‑1 (r = 0.67, p = 0.006).

Conclusion

Premature fusion of the PMS in the labial region during the human fetal period may be associated with maxillary deficiency, which is related to a class III malocclusion. Overall, the similar expression patterns of TGF-β1, TGF-β3 and fibulin‑1 suggested a close relationship between these factors in regulating the development of the PMS.
Literature
5.
go back to reference Szuhanek C, Gâdea Paraschivescu E, Sişu AM, Motoc A (2011) Cephalometric investigation of Class III dentoalveolar malocclusion. Rom J Morphol Embryol 52(4):1343–1346PubMed Szuhanek C, Gâdea Paraschivescu E, Sişu AM, Motoc A (2011) Cephalometric investigation of Class III dentoalveolar malocclusion. Rom J Morphol Embryol 52(4):1343–1346PubMed
11.
go back to reference Mooney MP, Siegel MI (1986) Developmental relationship between premaxillary-maxillary suture patency and anterior nasal spine morphology. Cleft Palate J 23(2):101–107PubMed Mooney MP, Siegel MI (1986) Developmental relationship between premaxillary-maxillary suture patency and anterior nasal spine morphology. Cleft Palate J 23(2):101–107PubMed
28.
go back to reference Gato A, Martinez ML, Tudela C et al (2002) TGF-beta(3)-induced chondroitin sulphate proteoglycan mediates palatal shelf adhesion. Dev Biol 250(2):393–405CrossRefPubMed Gato A, Martinez ML, Tudela C et al (2002) TGF-beta(3)-induced chondroitin sulphate proteoglycan mediates palatal shelf adhesion. Dev Biol 250(2):393–405CrossRefPubMed
Metadata
Title
Anatomical and immunohistochemical analyses of the fusion of the premaxillary–maxillary suture in human fetuses
Authors
Ling Zhu
Wen-hua Ruan
Wu-qun Han
Wei-zhong Gu
Publication date
09-07-2022
Publisher
Springer Medizin
Published in
Journal of Orofacial Orthopedics / Fortschritte der Kieferorthopädie / Issue 2/2024
Print ISSN: 1434-5293
Electronic ISSN: 1615-6714
DOI
https://doi.org/10.1007/s00056-022-00410-w

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