{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T00:34:32Z","timestamp":1760142872743,"version":"build-2065373602"},"reference-count":32,"publisher":"MDPI AG","issue":"1","license":[{"start":{"date-parts":[[2024,1,8]],"date-time":"2024-01-08T00:00:00Z","timestamp":1704672000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100006245","name":"Israeli Ministry of Science, Space, and Technology","doi-asserted-by":"publisher","award":["#3-17335","#165\/23","# 2021049"],"award-info":[{"award-number":["#3-17335","#165\/23","# 2021049"]}],"id":[{"id":"10.13039\/501100006245","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Israeli Science Foundation (ISF)","award":["#3-17335","#165\/23","# 2021049"],"award-info":[{"award-number":["#3-17335","#165\/23","# 2021049"]}]},{"name":"U.S.\u2013Israel Binational Science Foundation (BSF)","award":["#3-17335","#165\/23","# 2021049"],"award-info":[{"award-number":["#3-17335","#165\/23","# 2021049"]}]},{"name":"ISF","award":["#3-17335","#165\/23","# 2021049"],"award-info":[{"award-number":["#3-17335","#165\/23","# 2021049"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biomolecules"],"abstract":"<jats:p>Objective: Previous studies have shown that the cleavage of Sirt1 contributes to the development of osteoarthritis (OA). In fact, OA was effectively abrogated by the intra-articular (IA) administration of two compounds, one blocking Sirt1 cleavage (CA074me) and the other activating Sirt1 (SRT1720), using a post-traumatically induced model (PTOA) in young female mice. In this study, we attempted to understand if this local treatment is effective in preventing age-associated OA (AOA) progression and symptoms. Design: A group of 17-month-old female C57BL\/6J mice were IA administered with CA074me and\/or SRT1720 or their combination. Joint histopathological analysis and bone histomorphometry were carried out, with an assessment of knee mechanical hyperalgesia. A serum analysis for NT\/CT Sirt1 was carried out along with immunohistochemistry for articular cartilage to detect p16INK4A or \u03b3H2A.X. Similarly, meniscal cartilage was monitored for Lef1 and Col1a1 deposition. The data were compared for young female mice subjected to post-traumatic OA (PTOA). Results: Similar to PTOA, combination-treated AOA exhibited improved knee hyperalgesia, yet structural improvements were undetected, corresponding to unchanged NT\/CT Sirt1 serum levels. Both AOA and PTOA exhibited unchanged staining for nuclear p16INK4A or \u03b3H2A.X and lacked a correlation with OA severity. Contrarily to PTOA, the combination treatment with AOA did not exhibit a local reduction in the Lef1 and Col1 targets. Conclusions: When targeting Sirt1 cleavage, the PTOA and AOA models exhibited a similar pain response to the combination treatment; however, they displayed diverse structural outcomes for joint-related damage, related to Lef1-dependent signaling. Interestingly, nuclear p16INK4A was unaffected in both models, regardless of the treatment\u2019s effectiveness. Finally, these findings highlight the variations in the responses between two highly researched OA preclinical models, reflecting OA pathophysiology heterogeneity and variations in gender-related drug-response mechanisms.<\/jats:p>","DOI":"10.3390\/biom14010081","type":"journal-article","created":{"date-parts":[[2024,1,8]],"date-time":"2024-01-08T07:59:20Z","timestamp":1704700760000},"page":"81","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Diverse Response to Local Pharmacological Blockade of Sirt1 Cleavage in Age-Induced versus Trauma-Induced Osteoarthritis Female Mice"],"prefix":"10.3390","volume":"14","author":[{"given":"Yonathan H.","family":"Maatuf","sequence":"first","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miya","family":"Marco","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shani","family":"Unger-Gelman","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eli","family":"Farhat","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anna","family":"Zobrab","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ankita","family":"Roy","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ashish","family":"Kumar","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1619-4423","authenticated-orcid":false,"given":"Idan","family":"Carmon","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Eli","family":"Reich","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3089-6875","authenticated-orcid":false,"given":"Mona","family":"Dvir-Ginzberg","sequence":"additional","affiliation":[{"name":"Institute of Biomedical and Oral research, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem 9112102, Israel"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,1,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"643","DOI":"10.1016\/j.bpobgyn.2013.02.005","article-title":"The clinical consequences of an ageing world and preventivestrategies","volume":"27","author":"Lunenfeld","year":"2013","journal-title":"Best Pract. Res. Clin. Obs. 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