Role of dendritic cells in MYD88-mediated immune recognition and osteoinduction initiated by the implantation of biomaterials / 国际口腔科学杂志·英文版

Bone substitute material implantation has become an important treatment strategy for the repair of oral and maxillofacial bone defects. Recent studies have shown that appropriate inflammatory and immune cells are essential factors in the process of osteoinduction of bone substitute materials. Previous studies have mainly focused on innate immune cells such as macrophages. In our previous work, we found that T lymphocytes, as adaptive immune cells, are also essential in the osteoinduction procedure. As the most important antigen-presenting cell, whether dendritic cells (DCs) can recognize non-antigen biomaterials and participate in osteoinduction was still unclear. In this study, we found that surgical trauma associated with materials implantation induces necrocytosis, and this causes the release of high mobility group protein-1 (HMGB1), which is adsorbed on the surface of bone substitute materials. Subsequently, HMGB1-adsorbed materials were recognized by the TLR4-MYD88-NFκB signal axis of dendritic cells, and the inflammatory response was activated. Finally, activated DCs release regeneration-related chemokines, recruit mesenchymal stem cells, and initiate the osteoinduction process. This study sheds light on the immune-regeneration process after bone substitute materials implantation, points out a potential direction for the development of bone substitute materials, and provides guidance for the development of clinical surgical methods.

Correlation between medication adherence and quality of life in aged patients with hypertension from ;communi ties / 心血管康复医学杂志

Objective:To explore the correlation between medication adherence and quality of life (QOL) in aged pa‐tients with hypertension from communities .Methods :Chinese questionnaire of quality of life in patients with cardi‐ovascular disease (CQQC) and Morisky medication adherence scale were used to investigate and analyze 197 aged pa‐tients with hypertension from communities .Results:Total score of CQQC was (78.69 ± 9.36) scores in the 197 aged patients with hypertension from communities .In which ,77 cases (39.09% ) possessed good medication adherence , and 120 cases ( (60. 91% )) with poor adherence to medication . Compared with those with poor adherence to medi‐cation,therewassignificantriseintotalscoreofCQQC [(75.73±8.52)scoresvs.(83.31±8.76)scores ,P<0.01] .Pearson correlation analysis indicated that QOL was significant positively correlated with medication adher‐ence (r=0.397 , P<0.01) .Conclusion:Community health staff should pay attention to influencing factors of med‐ication adherence in aged patients with hypertension ,take individualized and targeted interventional measures to im‐prove their adherence to medicationand quality of life .