{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,30]],"date-time":"2026-09-30T00:45:07Z","timestamp":1790729107918,"version":"4.1.0"},"reference-count":35,"publisher":"Oxford University Press (OUP)","issue":"8","license":[{"start":{"date-parts":[[1990,8,1]],"date-time":"1990-08-01T00:00:00Z","timestamp":649468800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/journals\/pages\/open_access\/funder_policies\/chorus\/standard_publication_model"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[1990,8,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Alkaline phosphatase (AP), osteopontin (OP), and osteocalcin (OC) are expressed during osteoblastic differentiation. However, previous studies suggested differences in the timing and possibly the site of their expression. In this study we used in situ hybridization to follow the distribution of these osteoblastic markers during bone development.<\/jats:p>\n                  <jats:p>Frozen sections of neonatal rat long bones and calvariae were hybridized with 35S-labeled RNA probes complementary to the AP, OP, and OC mRNAs. Controls included sections hybridized with the sense (mRNA) probes or pretreated with RNase.<\/jats:p>\n                  <jats:p>Positive cells were identified in all areas of bone formation of the long bones and calvariae. Based on quantitative silver grain distribution and density, high levels of OP expression were present only in osteoblasts in close proximity to bone (one to two cell layers). OC expression, apparently at lower levels than OP, was also localized to osteoblasts in contact with bone. In contrast AP, which was expressed at lower levels than OP, was present in a large number of cells, including preosteoblasts that were many layers removed from the bone-forming surface.<\/jats:p>\n                  <jats:p>These findings are consistent with the asynchronous expression of phenotypically related genes and suggest that AP is an earlier differentiation marker than OP and OC during the formation of endochondral and membranous bone.<\/jats:p>","DOI":"10.1002\/jbmr.5650050806","type":"journal-article","created":{"date-parts":[[2010,2,3]],"date-time":"2010-02-03T13:02:36Z","timestamp":1265202156000},"page":"831-842","source":"Crossref","is-referenced-by-count":355,"title":["Different pattern of alkaline phosphatase, osteopontin, and osteocalcin expression in developing rat bone visualized by in situ hybridization"],"prefix":"10.1093","volume":"5","author":[{"given":"Miron","family":"Weinreb","sequence":"first","affiliation":[{"name":"Tel-Aviv University School of Dental Medicine, Tel-Aviv 69978, Israel"},{"name":"Department of Bone Biology and Osteoporosis, Merck Sharp & Dohme Research Laboratories, West Point, PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Doron","family":"Shinar","sequence":"additional","affiliation":[{"name":"Department of Bone Biology and Osteoporosis, Merck Sharp & Dohme Research Laboratories, West Point, PA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gideon A.","family":"Rodan","sequence":"additional","affiliation":[{"name":"Department of Bone Biology and Osteoporosis, Merck Sharp & Dohme Research Laboratories, West Point, PA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[1990,8,1]]},"reference":[{"key":"2024012712391214900_bib1","doi-asserted-by":"crossref","first-page":"399","DOI":"10.1042\/cs0720399","article-title":"The special proteins of bone tissue","volume":"72","author":"Triffitt","year":"1987","journal-title":"Clin 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