Background: Phase angle (PhA) reflects cellular integrity and muscle quality. However, evidence is limited regarding whether an increase in PhA is associated with improvements in activities of daily living (ADL) and skeletal muscle mass. This study aimed to investigate the association between change in PhA and prognosis in terms of ADL and skeletal muscle mass in post-stroke patients undergoing rehabilitation. Methods: This retrospective cohort study was conducted at a convalescent rehabilitation hospital in Japan. Patients with a PhA at admission below the cutoff values (4.76° for male and 4.11° for female) were included. Patients were categorized into a PhA-increase group (>0) and a non-increase group (≤0). Outcomes included the Functional Independence Measure (FIM)-motor score and skeletal muscle mass index (SMI) at discharge. Multivariate regression was used to assess associations. Results: A total of 253 patients were included (mean age 78.0±10.9 years; 51% females). The median PhA at admission was 3.70° (interquartile range [IQR], 3.20–4.10), and the median change during hospitalization was 0.00° (IQR, -0.20– 0.30). Of these, 119 patients had increased PhA and 134 did not. Change in PhA was independently associated with higher FIM-motor scores (β=0.078, p=0.040) and greater SMI (β=0.454, p<0.001) at discharge. Conclusions In post-stroke patients, an increase in PhA during hospitalization was associated with better functional and muscular outcomes. PhA may therefore serve as a valuable biomarker for assessing the efficacy of rehabilitation.

Background: Evidence on the effectiveness of exercise for cognitive recovery in patients with sarcopenia is limited. This study examined the association between group-based chair-stand exercise and cognitive improvement during convalescent rehabilitation. Methods: This retrospective cohort study included stroke patients with sarcopenia and impaired cognitive level, defined as a Functional Independence Measure (FIM)-cognitive score ≤23, admitted between 2016 and 2023. All patients received standard rehabilitation and participated in group-based chair-stand exercise twice daily. The frequency of exercise during hospitalization was recorded. The primary outcome was FIM-cognitive score at discharge. Secondary outcomes were handgrip strength (HG) and FIM-motor score. Multivariate linear regression analysis was used to examine associations between exercise frequency and outcomes, adjusting for potential confounders. Results: Of the 1,220 patients admitted, 273 sarcopenic stroke patients with reduced cognitive level (mean age 80 years; 48% male) were included in the final analysis dataset; the median frequency of performing chair-stand exercise per day was 43 (interquartile range, 20–71). Higher exercise frequency was independently associated with better FIM-cognitive score at discharge (β=0.217, p<0.001), greater HG (β=0.146, p=0.008), and improved FIM-motor score (β=0.295, p<0.001). Conclusion Frequent participation in group-based chair-stand exercise was associated with improvements in cognitive and physical function in sarcopenic stroke patients. Incorporating simple, repetitive resistance exercises into rehabilitation programs may enhance recovery outcomes in this vulnerable population.

Background: Systemic inflammation is associated with poor functional outcomes. However, the effects of improved inflammation on functional indicators remain unclear. This study aimed to clarify the relationship between improvements in systemic inflammation and activities of daily living in patients after stroke. Methods: This retrospective cohort study included patients post stroke with systemic inflammation upon admission. Systemic inflammation was defined as a modified Glasgow Prognostic Score (mGPS) score of 1–2. Improvement in systemic inflammation was defined as a reduction in mGPS score or blood C-reactive protein (CRP) levels during hospitalization. The primary outcomes were the motor items of the Functional Independence Measure (FIM-motor) at discharge. We applied multiple linear regression analysis to examine whether reduced systemic inflammation was associated with outcomes after adjusting for confounding factors. Results: Of the 1,490 patients recruited, 158 (median age of 79 years; 88 men) had systemic inflammation on admission and were included in the study. Among these patients, 131 (82.9%) and 147 (93.0%) exhibited reduced mGPS and CRP levels, respectively. The median change in CRP was 2.1 mg/dL (interquartile range, 1.1–3.8). Multivariate analysis revealed that improvements in mGPS (β=0.125, p=0.012) and CRP levels (β=0.108, p=0.108) were independently and positively associated with FIM-motor at discharge. Conclusions Improvement in systemic inflammation was positively associated with functional outcomes in patients post stroke. Early detection and therapeutic intervention for systemic inflammation may further improve outcomes in these patients.

Background: Systemic inflammation is associated with poor functional outcomes. However, the effects of improved inflammation on functional indicators remain unclear. This study aimed to clarify the relationship between improvements in systemic inflammation and activities of daily living in patients after stroke. Methods: This retrospective cohort study included patients post stroke with systemic inflammation upon admission. Systemic inflammation was defined as a modified Glasgow Prognostic Score (mGPS) score of 1–2. Improvement in systemic inflammation was defined as a reduction in mGPS score or blood C-reactive protein (CRP) levels during hospitalization. The primary outcomes were the motor items of the Functional Independence Measure (FIM-motor) at discharge. We applied multiple linear regression analysis to examine whether reduced systemic inflammation was associated with outcomes after adjusting for confounding factors. Results: Of the 1,490 patients recruited, 158 (median age of 79 years; 88 men) had systemic inflammation on admission and were included in the study. Among these patients, 131 (82.9%) and 147 (93.0%) exhibited reduced mGPS and CRP levels, respectively. The median change in CRP was 2.1 mg/dL (interquartile range, 1.1–3.8). Multivariate analysis revealed that improvements in mGPS (β=0.125, p=0.012) and CRP levels (β=0.108, p=0.108) were independently and positively associated with FIM-motor at discharge. Conclusions Improvement in systemic inflammation was positively associated with functional outcomes in patients post stroke. Early detection and therapeutic intervention for systemic inflammation may further improve outcomes in these patients.

Background: Systemic inflammation is associated with poor functional outcomes. However, the effects of improved inflammation on functional indicators remain unclear. This study aimed to clarify the relationship between improvements in systemic inflammation and activities of daily living in patients after stroke. Methods: This retrospective cohort study included patients post stroke with systemic inflammation upon admission. Systemic inflammation was defined as a modified Glasgow Prognostic Score (mGPS) score of 1–2. Improvement in systemic inflammation was defined as a reduction in mGPS score or blood C-reactive protein (CRP) levels during hospitalization. The primary outcomes were the motor items of the Functional Independence Measure (FIM-motor) at discharge. We applied multiple linear regression analysis to examine whether reduced systemic inflammation was associated with outcomes after adjusting for confounding factors. Results: Of the 1,490 patients recruited, 158 (median age of 79 years; 88 men) had systemic inflammation on admission and were included in the study. Among these patients, 131 (82.9%) and 147 (93.0%) exhibited reduced mGPS and CRP levels, respectively. The median change in CRP was 2.1 mg/dL (interquartile range, 1.1–3.8). Multivariate analysis revealed that improvements in mGPS (β=0.125, p=0.012) and CRP levels (β=0.108, p=0.108) were independently and positively associated with FIM-motor at discharge. Conclusions Improvement in systemic inflammation was positively associated with functional outcomes in patients post stroke. Early detection and therapeutic intervention for systemic inflammation may further improve outcomes in these patients.

Osteoclasts are bone-specific multinucleated cells generated by the differentiation of monocyte/macrophage lineage precursors. Regulation of osteoclast differentiation is considered an effective therapeutic approach to the treatment of bone-lytic diseases. Periodontitis is an inflammatory disease characterized by extensive bone resorption. In this study, we investigated the effects of sodium fluoride (NaF) on osteoclastogenesis induced by Porphyromonas gingivalis, an important colonizer of the oral cavity that has been implicated in periodontitis. NaF strongly inhibited the P. gingivalis-induced alveolar bone loss. That effect was accompanied by decreased levels of cathepsin K, interleukin (IL)-1β, matrix metalloproteinase 9 (MMP9), and tartrate-resistant acid phosphatase, which were up-regulated during P. gingivalis-induced osteoclastogenesis. Consistent with the in vivo anti-osteoclastogenic effect, NaF inhibited osteoclast formation caused by the differentiation factor RANKL (receptor activator of nuclear factor κB ligand) and macrophage colony-stimulating factor (M-CSF). The RANKL-stimulated induction of the transcription factor nuclear factor of activated T cells (NFAT) c1 was also abrogated by NaF. Taken together, our data demonstrate that NaF inhibits RANKL-induced osteoclastogenesis by reducing the induction of NFATc1, ultimately leading to the suppressed expression of cathepsin K and MMP9. The in vivo effect of NaF on the inhibition of P. gingivalis-induced osteoclastogenesis strengthens the potential usefulness of NaF for treating periodontal diseases.
Acid Phosphatase ; drug effects ; Alveolar Bone Loss ; microbiology ; prevention & control ; Animals ; Anti-Bacterial Agents ; therapeutic use ; Anti-Inflammatory Agents ; therapeutic use ; Bacteroidaceae Infections ; microbiology ; prevention & control ; Bone Density Conservation Agents ; therapeutic use ; Cathepsin K ; drug effects ; Interleukin-1beta ; drug effects ; Interleukin-6 ; analysis ; Interleukin-8 ; drug effects ; Isoenzymes ; drug effects ; Macrophage Colony-Stimulating Factor ; drug effects ; Male ; Matrix Metalloproteinase 9 ; drug effects ; Osteoclasts ; drug effects ; Periodontitis ; microbiology ; prevention & control ; Porphyromonas gingivalis ; drug effects ; RANK Ligand ; drug effects ; Rats ; Rats, Sprague-Dawley ; Sodium Fluoride ; therapeutic use ; Tartrate-Resistant Acid Phosphatase ; Transcription Factors ; drug effects ; X-Ray Microtomography ; methods