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Expression of receptor activity modifying protein 1 (RAMP1), the transcription factor RUNX2, osteocalcin, p38 and p-p38 were analyzed by western blotting. Calcium mineralization was analyzed by alizarin red straining.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Using compressive force treatments, low magnitudes (1 and 2\u00a0g\/cm<jats:sup>2<\/jats:sup>) of compressive force for 24\u00a0h promoted osteoblast differentiation and mineral deposition whereas higher magnitudes (3 and 4\u00a0g\/cm<jats:sup>2<\/jats:sup>) did not produce osteogenic effect. Through western blot assay, we observed that the receptor activity-modifying protein 1 (RAMP1) expression was upregulated, and p38 mitogen-activated protein kinase (MAPK) was phosphorylated during low magnitudes compressive force-promoted osteoblast differentiation. Further investigation of a calcitonin gene-related peptide (CGRP) peptide incubation, a ligand for RAMP1, showed that CGRP at concentration of 25 and 50 ng\/ml could increase expression levels of RUNX2 and osteocalcin, and percentage of mineralization, suggesting its osteogenic potential. In addition, with the same conditions, CGRP also significantly upregulated RAMP1 and phosphorylated p38 expression levels. Also, the combination of compressive forces (1 and 2\u00a0g\/cm<jats:sup>2<\/jats:sup>) with 50 ng\/ml CGRP trended to increase RAMP1 expression, p38 activity, and osteogenic marker RUNX2 levels, as well as percentage of mineralization compared to compressive force alone. This suggest that RAMP1 possibly acts as an upstream regulator of p38 signaling during osteogenic differentiation.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>These findings suggest that CGRP-RAMP1\/p38MAPK signaling implicates in osteoblast differentiation in response to optimal magnitude of compressive force. This study helps to define the underlying mechanism of compressive stimulation and may also enhance the application of compressive stimulation or CGRP peptide as an alternative approach for accelerating tooth movement in orthodontic treatment.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s13018-024-04805-w","type":"journal-article","created":{"date-parts":[[2024,6,2]],"date-time":"2024-06-02T17:01:44Z","timestamp":1717347704000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Involvement of RAMP1\/p38MAPK signaling pathway in osteoblast differentiation in response to mechanical stimulation: a preliminary study"],"prefix":"10.1186","volume":"19","author":[{"given":"Thunwa","family":"Binlateh","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Chidchanok","family":"Leethanakul","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peungchaleoy","family":"Thammanichanon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2024,6,2]]},"reference":[{"key":"4805_CR1","doi-asserted-by":"publisher","first-page":"1788","DOI":"10.1100\/2011\/761768","volume":"11","author":"SH Zainal Ariffin","year":"2011","unstructured":"Zainal Ariffin SH, Yamamoto Z, Abidin Z, et al. 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