Intramembranous valine linked to schizophrenia is required for neuregulin 1 regulation of the morphological development of cortical neurons.
KIT gene mutation is specific to gastric stromal tumors in the
intramembranous component of the tyrosine kinase receptor (exon 11) and in the extramembranous component (exon 9) as well as to tumors located in the intestines and colon, which reportedly have a worse prognosis (3, 5-7).
The more than 200 bones in the human body are formed during embryonic and postnatal skeletogenesis by two distinct, well-organized processes:
intramembranous and endochondral ossification.
TJs have been observed by the freeze-fracture electron microscopy as the network of
intramembranous strands (TJ strands) [4], formed by the assembly of claudins and TJ-associated myelin and lymphocyte protein and related proteins for vesicle trafficking and membrane link (MARVEL) proteins.
Furthermore, we can observe a specific Wnt immunoreactivity in
intramembranous ossification areas of the maxillary bone (arrow), and we confirm that [beta]-catenin expression is predominant in the cytoplasmic area.
Marie, "FGF signaling pathways in endochondral and
intramembranous bone development and human genetic disease," Genes & Development, vol.
Transient expression of neural cell adhesion molecules (NCAM) in osteoblasts during endochondral and
intramembranous ossification," Journal of Bone and Mineral Research, vol.
Ellisman, "Tight junction formation is closely linked to the polar redistribution of
intramembranous particles in aggregating MDCK epithelia," Experimental Cell Research, vol.
In contrast,
intramembranous ossification involves direct conversion of mesenchymal tissue into bone and primarily contributes to the formation of the skull bones [1].
Cleidocranial dysostosis is a skeletal dysplasia inherited in an autosomal dominant manner and is characterized by
intramembranous bone formation.