Journal of periodontal research最新文献

{"title":"Implant surface modifications and their impact on osseointegration and peri-implant diseases through epigenetic changes: A scoping review","authors":"Marcel F. Kunrath,&nbsp;Carlos Garaicoa-Pazmino,&nbsp;Paula Milena Giraldo-Osorno,&nbsp;Aya Haj Mustafa,&nbsp;Christer Dahlin,&nbsp;Lena Larsson,&nbsp;Farah Asa'ad","doi":"10.1111/jre.13273","DOIUrl":"10.1111/jre.13273","url":null,"abstract":"<p>Dental implant surfaces and their unique properties can interact with the surrounding oral tissues through epigenetic cues. The present scoping review provides current perspectives on surface modifications of dental implants, their impact on the osseointegration process, and the interaction between implant surface properties and epigenetics, also in peri-implant diseases. Findings of this review demonstrate the impact of innovative surface treatments on the epigenetic mechanisms of cells, showing promising results in the early stages of osseointegration. Dental implant surfaces with properties of hydrophilicity, nanotexturization, multifunctional coatings, and incorporated drug-release systems have demonstrated favorable outcomes for early bone adhesion, increased antibacterial features, and improved osseointegration. The interaction between modified surface morphologies, different chemical surface energies, and/or release of molecules within the oral tissues has been shown to influence epigenetic mechanisms of the surrounding tissues caused by a physical–chemical interaction. Epigenetic changes around dental implants in the state of health and disease are different. In conclusion, emerging approaches in surface modifications for dental implants functionalized with epigenetics have great potential with a significant impact on modulating bone healing during osseointegration.</p>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 6","pages":"1095-1114"},"PeriodicalIF":3.4,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11626700/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140922522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Umbelliferone reduces inflammation and ligature-induced osteoclastic alveolar bone resorption in mice","authors":"Samia Jessica Silva Tavares,&nbsp;Camila Rodrigues Pereira,&nbsp;Roseane Aline Monteiro Fortes,&nbsp;Bianca Elen Souza Alves,&nbsp;Cristiane Sá Roriz Fonteles,&nbsp;Deysi Viviana Tenazoa Wong,&nbsp;Roberto César Pereira Lima-Júnior,&nbsp;Manoel Odorico Moraes,&nbsp;Vilma Lima","doi":"10.1111/jre.13277","DOIUrl":"10.1111/jre.13277","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>This study aimed to investigate the effects of Umbelliferone (UMB) on the inflammation underlying alveolar bone resorption in mouse periodontitis.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Male Swiss mice subjected to a ligature of molars were grouped as non-treated (NT), received UMB (15, 45, or 135 mg/kg) or saline daily for 7 days, respectively, and were compared with naïve mice as control. Gingival tissues were evaluated by myeloperoxidase (MPO) activity and interleukin-1β level by ELISA. The bone resorption was directly assessed on the region between the cement–enamel junction and the alveolar bone crest. Microscopically, histomorphometry of the furcation region, immunofluorescence for nuclear factor-kappa B (NF-ĸB), and immunohistochemistry for tartrate-resistant acid phosphatase (TRAP), and cathepsin K (CTSK) were performed. Systemically, body mass variation and leukogram were analyzed.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Periodontitis significantly increased MPO activity, interleukin-1β level, and NF-ĸB+ immunofluorescence, and induced severe alveolar bone and furcation resorptions, besides increased TRAP+ and CTSK+ cells compared with naïve. UMB significantly prevented the inflammation by reducing MPO activity, interleukin-1β level, and NF-ĸB+ intensity, besides reduction of resorption of alveolar bone and furcation area, and TRAP+ and CTSK+ cells compared with the NT group. Periodontitis or UMB treatment did not affect the animals systemically.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>UMB improved periodontitis by reducing inflammation and bone markers.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 5","pages":"982-992"},"PeriodicalIF":3.4,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140922536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of vitamin K2 administration on guided bone regeneration in diabetic rats","authors":"Irmak Duman,&nbsp;Gamze Tanrıverdi,&nbsp;Hafize Öztürk Özener","doi":"10.1111/jre.13287","DOIUrl":"10.1111/jre.13287","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aim</h3>\u0000 \u0000 <p>The present study aimed to investigate the histomorphometric and immunohistochemical impacts of vitamin K2 on guided bone regeneration (GBR) in calvarial critical-size defects (CSDs) in diabetic rats.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>A total of 30 rats were used in this study, comprising 12 non-diabetic (control) rats and 18 with streptozotocin-nicotinamide-induced experimental Diabetes mellitus (DM). In all rats, two calvarial CSDs were created: one defect was left empty (E), the other was treated with bovine-derived bone graft and collagen-based resorbable membrane (GM). Study groups were as follows: control rats administered saline (<i>n</i> = 6, C-E and C-GM groups) or vitamin K2 (<i>n</i> = 6, CK-E and CK-GM groups) and diabetic rats administered saline (<i>n</i> = 6, DM-E and DM-GM groups) or vitamin K2 (<i>n</i> = 6, DMK-E and DMK-GM groups). After 4 weeks of saline or vitamin K2 administration, the rats were euthanized. Bone defect healing and new bone formation were assessed histomorphometrically, and osteocalcin and osteopontin levels were examined immunohistochemically.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Percentage of new bone formation was greater in CK-GM vs. CK-E and in DMK-GM vs. DMK-E [<i>d</i> = 3.86 (95% CI = 16.38–28.61), <i>d</i> = 1.86, (95% CI = 10.74–38.58), respectively, <i>p</i> &lt; .05]. Bone defect healing scores were higher in CK-GM vs. CK-E and in DMK-GM vs. DMK-E [<i>d</i> = 2.69 (95% CI = -2.12 to −0.87), <i>d</i> = 3.28 (95% CI = 0.98–1.91), respectively, <i>p</i> &lt; .05]. Osteocalcin expression levels were elevated in CK-GM vs. CK-E, in DMK-GM vs. DMK-E [<i>d</i> = 1.19 (95% CI = 0.08–1.41), <i>d</i> = 1.10 (95% CI = 0.02–1.22), respectively <i>p</i> &lt; .05]. Vitamin K2 enhanced osteocalcin expression levels in DMK-E vs. DM-E [<i>d</i> = 2.78, (95% CI = 0.56–1.53), <i>p</i> &lt; .05] and in DMK-GM vs. DM-GM [<i>d</i> = 2.43, (95% CI = 0.65–2.10), <i>p</i> &lt; .05]. Osteopontin expression was enhanced in defects treated with GM vs. E defects [C-GM vs. C-E, <i>d</i> = 1.56 (95% CI = 0.38–2.01); CK-GM vs. CK-E, <i>d</i> = 1.91 (95% CI = 0.49–1.72); DM-GM vs. DM-E, <i>d</i> = 2.34 (95% CI = -1.12 to −0.50); DMK-GM vs. DMK-E, <i>d</i> = 2.00 (95% CI = 0.58–1.91), <i>p</i> &lt; .05].</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>The research findings suggest that administering vitamin K2 in GBR for rats with DM favorably impacts bone healing in CSDs, presenting an adjunctive strategy for bone regeneration.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 5","pages":"993-1004"},"PeriodicalIF":3.4,"publicationDate":"2024-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jre.13287","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140922517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of mechanical loading on matrix homeostasis and differentiation potential of periodontal ligament cells: A scoping review","authors":"Novena Dameria Pakpahan,&nbsp;Maythwe Kyawsoewin,&nbsp;Jeeranan Manokawinchoke,&nbsp;Chutimon Termkwancharoen,&nbsp;Hiroshi Egusa,&nbsp;Phoonsuk Limraksasin,&nbsp;Thanaphum Osathanon","doi":"10.1111/jre.13284","DOIUrl":"10.1111/jre.13284","url":null,"abstract":"<p>Various mechanical loadings, including mechanical stress, orthodontics forces, and masticatory force, affect the functions of periodontal ligament cells. Regulation of periodontal tissue destruction, formation, and differentiation functions are crucial processes for periodontal regeneration therapy. Numerous studies have reported that different types of mechanical loading play a role in maintaining periodontal tissue matrix homeostasis, and osteogenic differentiation of the periodontal ligament cells. This scoping review aims to evaluate the studies regarding the effects of various mechanical loadings on the secretion of extracellular matrix (ECM) components, regulation of the balance between formation and destruction of periodontal tissue matrix, osteogenic differentiation, and multiple differentiation functions of the periodontal ligament. An electronic search for this review has been conducted on two databases; MEDLINE via PubMed and SCOPUS. Study selection criteria included original research written in English that reported the effects of different mechanical loadings on matrix homeostasis and differentiation potential of periodontal ligament cells. The final 204 articles were mainly included in the present scoping review. Mechanical forces of the appropriate magnitude, duration, and pattern have a positive influence on the secretion of ECM components such as collagen, as well as regulate the secretion of matrix metalloproteinases and tissue inhibitors of matrix metalloproteinases. Additionally, these forces regulate a balance between osteoblastic and osteoclast differentiation. Conversely, incorrect mechanical loadings can lead to abnormal formation and destruction of both soft and hard tissue. This review provides additional insight into how mechanical loadings impact ECM homeostasis and multiple differentiation functions of periodontal ligament cells (PDLCs), thus making it valuable for regenerative periodontal treatment. In combination with advancing technologies, the utilization of ECM components, application of different aspects of mechanical force, and differentiation potential of PDLCs could bring potential benefits to future periodontal regeneration therapy.</p>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 5","pages":"877-906"},"PeriodicalIF":3.4,"publicationDate":"2024-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140912540","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Microbiome of periodontitis and peri-implantitis before and after therapy: Long-read 16S rRNA gene amplicon sequencing","authors":"Pei-Shiuan Yu,&nbsp;Che-Chang Tu,&nbsp;Nawarat Wara-aswapati,&nbsp;Chen-Ying Wang,&nbsp;Yu-Kang Tu,&nbsp;Hsin-Han Hou,&nbsp;Takaaki Ueno,&nbsp;I-Hui Chen,&nbsp;Kuan-Lun Fu,&nbsp;Huei-Ying Li,&nbsp;Yi-Wen Chen","doi":"10.1111/jre.13269","DOIUrl":"10.1111/jre.13269","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>The microbial profiles of peri-implantitis and periodontitis (PT) are inconclusive. The controversies mainly arise from the differences in sampling sites, targeted gene fragment, and microbiome analysis techniques. The objective of this study was to explore the microbiomes of peri-implantitis (PI), control implants (CI), PT and control teeth (CT), and the microbial change of PI after nonsurgical treatment (PIAT).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Twenty-two patients diagnosed with both PT and peri-implantitis were recruited. Clinical periodontal parameters and radiographic bone levels were recorded. In each patient, the subgingival and submucosal plaque samples were collected from sites with PI, CI, PT, CT, and PIAT. Microbiome diversity was analyzed by high-throughput amplicon sequencing using full-length of 16S rRNA gene by next generation sequencing.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>The 16S rRNA gene sequencing analysis revealed 512 OTUs in oral microbiome and 377 OTUs reached strain levels. The PI and PT groups possessed their own unique core microbiome. <i>Treponema denticola</i> was predominant in PI with probing depth of 8–10 mm. Interestingly, <i>Thermovirga lienii DSM 17291</i> and <i>Dialister invisus DSM 15470</i> were found to associate with PI. Nonsurgical treatment for peri-implantitis did not significantly alter the microbiome, except <i>Rothia aeria</i>.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Our study suggests <i>Treponemas</i> species may play a pivotal role in peri-implantitis. Nonsurgical treatment did not exert a major influence on the peri-implantitis microbiome in short-term follow-up. PT and peri-implantitis possess the unique microbiome profiles, and different therapeutic strategies may be suggested in the future.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 4","pages":"657-668"},"PeriodicalIF":3.4,"publicationDate":"2024-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140892216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Influence of gender on periodontal outcomes: A retrospective analysis of eight randomized clinical trials","authors":"Nidia Castro dos Santos,&nbsp;Miriam R. Westphal,&nbsp;Belen Retamal-Valdes,&nbsp;Poliana Mendes Duarte,&nbsp;Luciene Cristina Figueiredo,&nbsp;Marcelo Faveri,&nbsp;Jamil Shibli,&nbsp;Geisla Soares,&nbsp;Tamires Miranda,&nbsp;Daiane Fermiano,&nbsp;Ivan Borges,&nbsp;Cristiane Goncalves,&nbsp;Caio Junji Tanaka,&nbsp;Flavia Teles,&nbsp;Max Goodson,&nbsp;Hatice Hasturk,&nbsp;Thomas Van Dyke,&nbsp;Benjamin Ehmke,&nbsp;Peter Eickholz,&nbsp;Katrin Nickles,&nbsp;Ulrich Schlagenhauf,&nbsp;Joerg Meyle,&nbsp;Thomas Kocher,&nbsp;Ti-Sun Kim,&nbsp;Helio Doyle,&nbsp;Magda Feres","doi":"10.1111/jre.13272","DOIUrl":"10.1111/jre.13272","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>To explore the influence of gender on periodontal treatment outcomes in a dataset of eight RCTs conducted in Brazil, United States, and Germany.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>Clinical parameters were compared between men and women with stages III/IV grades B/C generalized periodontitis at baseline and 1-year post-therapy, including scaling and root planing with or without antibiotics.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Data from 1042 patients were analyzed. Men presented a tendency towards higher probing depth (<i>p</i> = .07, effect size = 0.11) and clinical attachment level (CAL) than women at baseline (<i>p</i> = .01, effect size = 0.16). Males also presented statistically significantly lower CAL gain at sites with CAL of 4–6 mm at 1-year post-therapy (<i>p</i> = .001, effect size = 0.20). Among patients with Grade B periodontitis who took antibiotics, a higher frequency of women achieved the endpoint for treatment (i.e., ≤4 sites PD ≥5 mm) at 1 year than men (<i>p</i> &lt; .05, effect size = 0.12).</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Men enrolled in RCTs showed a slightly inferior clinical response to periodontal therapy in a limited number of sub-analyses when compared to women. These small differences did not appear to be clinically relevant. Although gender did not dictate the clinical response to periodontal treatment in this population, our findings suggest that future research should continue to explore this topic.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 6","pages":"1175-1183"},"PeriodicalIF":3.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140850081","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the link between tooth loss, cognitive function, and brain wellness in the context of healthy aging","authors":"Roger D. Newman-Norlund,&nbsp;Santosh Kudaravalli,&nbsp;Anwar T. Merchant,&nbsp;Julius Fridriksson,&nbsp;Chris Rorden","doi":"10.1111/jre.13280","DOIUrl":"10.1111/jre.13280","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Aims</h3>\u0000 \u0000 <p>The aim of this study was to evaluate the utility of using MRI-derived tooth count, an indirect and nonspecific indicator of oral/periodontal health, and brain age gap (BAG), an MRI-based measure of premature brain aging, in predicting cognition in a population of otherwise healthy adults.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p>This retrospective study utilized data from 329 participants from the University of South Carolina's Aging Brain Cohort Repository. Participants underwent neuropsychological testing including the Montreal Cognitive Assessment (MoCA), completed an oral/periodontal health questionnaire, and submitted to high-resolution structural MRI imaging. The study compared variability on cognitive scores (MoCA) accounted for by MRI-derived BAG, MRI-derived total tooth count, and self-reported oral/periodontal health.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>We report a significant positive correlation between the total number of teeth and MoCA total scores after controlling for age, sex, and race, indicating a robust relationship between tooth count and cognition, <i>r</i>(208) = .233, <i>p</i> &lt; .001. In a subsample of participants identified as being at risk for MCI (MoCA &lt;= 25, <i>N</i> = 36) inclusion of MRI-based tooth count resulted in an <i>R</i>² change of .192 (<i>H</i>₀ = 0.138 → <i>H</i>₁ = 0.330), <i>F</i>(1,31) = 8.86, <i>p</i> = .006. Notably, inclusion of BAG, a valid and reliable measure of overall brain health, did not significantly improve prediction of MoCA scores in similar linear regression models.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>Our data support the idea that inclusion of MRI-based total tooth count may enhance the ability to predict clinically meaningful differences in cognitive abilities in healthy adults. This study contributes to the growing body of evidence linking oral/periodontal health with cognitive function.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 6","pages":"1184-1194"},"PeriodicalIF":3.4,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11626696/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140870565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Probiotics enhance alveolar bone microarchitecture, intestinal morphology and estradiol levels in osteoporotic animals","authors":"R. L. Lucateli,&nbsp;P. H. F. Silva,&nbsp;S. L. Salvador,&nbsp;E. Ervolino,&nbsp;F. A. C. Furlaneto,&nbsp;M. A. Marciano,&nbsp;T. B. M. Antunes,&nbsp;M. C. G. Del Arco,&nbsp;M. D. C. Tardelli,&nbsp;L. G. de Sousa,&nbsp;M. R. Messora","doi":"10.1111/jre.13256","DOIUrl":"10.1111/jre.13256","url":null,"abstract":"&lt;div&gt;\u0000 \u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Background and Objective&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Osteoporosis is associated with bone microarchitecture alterations, and the depletion of estrogen during menopause is a major contributing factor to its development. The literature highlights the noteworthy role of gut microbiota in bone metabolism, particularly in the progression of osteoporosis. Periodontal disease leads to alveolar bone loss, which may be influenced by estrogen deficiency, and this mechanism is intricately associated with an imbalance in systemic microbiota. The aim of this study was to evaluate the effects of &lt;i&gt;Bifidobacterium animalis&lt;/i&gt; subsp. &lt;i&gt;lactis&lt;/i&gt; HN019 (&lt;i&gt;B. lactis&lt;/i&gt; HN019) and &lt;i&gt;Lacticaseibacillus casei&lt;/i&gt; 01 (&lt;i&gt;L. casei&lt;/i&gt; 01) administrations on an osteoporosis animal model.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Materials and Methods&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;Thirty-three female rats were randomly divided into three groups: control (C-OVX), C-OVX-HN019 and C-OVX-LC01. All animals were ovariectomized. In groups C-OVX-HN019 and C-OVX-LC01, the probiotics were administered for 4 months. All animals were euthanized after 16 weeks from ovariectomy. Microtomographic, histopathological and immunohistochemical examinations were conducted on periodontal tissues, whereas histomorphometry, histopathological and immunohistochemical analyses were carried out on the intestine. The levels of estradiol were assessed in blood using an immunoenzymatic assay. The data were subjected to statistical analyses (&lt;i&gt;p&lt;/i&gt; &lt; .05).&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Results&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;The C-OVX-LC01 group exhibited a significant reduction in alveolar bone porosity and an increase in connective tissue density compared to C-OVX (&lt;i&gt;p&lt;/i&gt; &lt; .05). The C-OVX-HN019 and C-OVX-LC01 groups presented reduced expression of TRAP and RANKL compared to the C-OVX (&lt;i&gt;p&lt;/i&gt; &lt; .05). The C-OVX group presented villi defects, mild neutrophil infiltration, decrease in both villous height and intestinal crypts and reduced expression of intestinal junctional epithelium markers e-cadherin and claudin 01 compared to C-OVX-HN019 and C-OVX-LC01 (&lt;i&gt;p&lt;/i&gt; &lt; .05). The C-OVX group had lower estradiol levels than C-OVX-HN019 and C-OVX-LC01 (&lt;i&gt;p&lt;/i&gt; &lt; .05).&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 \u0000 &lt;section&gt;\u0000 \u0000 &lt;h3&gt; Conclusion&lt;/h3&gt;\u0000 \u0000 &lt;p&gt;The probiotic therapy promoted a reduction in alveolar bone destruction and intestinal permeability as well as an increase in estradiol levels in ovariectomized rats. Specifically, the probiotic strain &lt;i&gt;Lacticaseibacillus casei&lt;/i&gt; 01 exhibited greater effectiveness compared to &lt;i&gt;Bifidobacterium animalis&lt;/i&gt; subsp. &lt;i&gt;lactis&lt;/i&gt; HN019, indicating strain-dependent outcomes.&lt;/p&gt;\u0000 &lt;/section&gt;\u0000 ","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 4","pages":"758-770"},"PeriodicalIF":3.4,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140828828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Capsaicin attenuates Porphyromonas gingivalis-suppressed osteogenesis of periodontal ligament stem cells via regulating mitochondrial function and activating PI3K/AKT/mTOR pathway","authors":"Weijia Wang,&nbsp;Zhiyan Zhou,&nbsp;Tian Ding,&nbsp;Susu Feng,&nbsp;Hongrui Liu,&nbsp;Mengmeng Liu,&nbsp;Shaohua Ge","doi":"10.1111/jre.13252","DOIUrl":"10.1111/jre.13252","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Background and Objective</h3>\u0000 \u0000 <p>Prevention of periodontal bone resorption triggered by <i>Porphyromonas gingivalis</i> (<i>P. gingivalis</i>) is crucial for dental stability. Capsaicin, known as the pungent ingredient of chili peppers, can activate key signaling molecules involved in osteogenic process. However, the effect of capsaicin on osteogenesis of periodontal ligament stem cells (PDLSCs) under inflammation remains elusive.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Methods</h3>\u0000 \u0000 <p><i>P. gingivalis</i> culture suspension was added to mimic the inflammatory status after capsaicin pretreatment. The effects of capsaicin on the osteogenesis of PDLSCs, as well as mitochondrial morphology, Ca²⁺ level, reactive oxygen species (ROS), mitochondrial membrane potential (MMP), and osteogenesis-regulated protein expression levels were analyzed. Furthermore, a mouse experimental periodontitis model was established to evaluate the effect of capsaicin on alveolar bone resorption and the expression of osteogenesis-related proteins.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>Under <i>P. gingivalis</i> stimulation, capsaicin increased osteogenesis of PDLSCs. Not surprisingly, capsaicin rescued the damage to mitochondrial morphology, decreased the concentration of intracellular Ca²⁺ and ROS, enhanced MMP and activated phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT)/mammalian target of rapamycin (mTOR) pathway. The in vivo results showed that capsaicin significantly attenuated alveolar bone loss and augmented the expression of bone associated proteins.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusion</h3>\u0000 \u0000 <p>Capsaicin increases osteogenesis of PDLSCs under inflammation and reduces alveolar bone resorption in mouse experimental periodontitis.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 4","pages":"798-811"},"PeriodicalIF":3.4,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140828827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Vaspin facilitates the proliferation and osteogenic differentiation of periodontal ligament stem cells","authors":"Zhihui Jing,&nbsp;Xinran Feng,&nbsp;Xin Li,&nbsp;Xiaoyu Zhang,&nbsp;Chunling Pan","doi":"10.1111/jre.13254","DOIUrl":"10.1111/jre.13254","url":null,"abstract":"<div>\u0000 \u0000 \u0000 <section>\u0000 \u0000 <h3> Objective</h3>\u0000 \u0000 <p>To investigate whether visceral adipose tissue-derived serine protease inhibitor (vaspin) can alleviate the inhibitory effect of high-glucose (HG) culture on the proliferation and osteogenic differentiation of human periodontal ligament stem cells (PDLSCs) and to preliminarily explore the underlying mechanisms.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Background</h3>\u0000 \u0000 <p>High glucose produces damage to the regeneration of periodontal tissue of PDLSCs. The expression level of vaspin in periodontal tissue is high in periodontitis patients and effectively reduced after initial therapy of periodontal diseases. However, the effect of vaspin on PDLSCs remains unknown.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Materials and Methods</h3>\u0000 \u0000 <p>PDLSCs were cultured in media augmented with 5.5 or 25.0 mM concentrations of glucose to elucidate the impact and mechanism of vaspin on PDLSCs under high glucose in vitro. Proliferation was measured by Cell Counting Kit-8 (CCK8) assay. Osteogenesis of PDLSCs was assessed by alkaline phosphatase (ALP) staining, ALP activity, and Alizarin Red staining. Quantitative real-time polymerase chain reaction (qRT-PCR) and western blot (WB) were used to investigate the osteo-specific markers. Then, the molecular impact of vaspin in the presence/absence of HG on PDLSCs physiology was determined with TGF-β1/Smad signaling pathway as the main focus.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Results</h3>\u0000 \u0000 <p>It was revealed that the proliferation and osteogenic differentiation (OD) of PDLSCs under HG was reduced, and by adding vaspin the anti-osteogenic impact of HG was relieved. Moreover, vaspin enhanced TGF-β1/Smad signaling pathway activity. Pretreatment with TGF-β1 inhibitor blocked vaspin-triggered TGF-β1/Smad signal activation and minimized the vaspin-induced protective effect against HG-inhibited growth and OD.</p>\u0000 </section>\u0000 \u0000 <section>\u0000 \u0000 <h3> Conclusions</h3>\u0000 \u0000 <p>In summary, vaspin observably reduces HG-mediated inhibition of PDLSCs OD by modulating the TGF-β1/Smad signaling pathway. Vaspin may be a potential therapeutic for periodontal tissue regeneration in diabetic patients.</p>\u0000 </section>\u0000 </div>","PeriodicalId":16715,"journal":{"name":"Journal of periodontal research","volume":"59 4","pages":"812-820"},"PeriodicalIF":3.4,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140828738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}