Background: Porphyromonas gingivalis is a primary etiological agent of chronic periodontitis in adults, and its lipopolysaccharide (LPS) elicits a strong inflammatory response that contributes to periodontal tissue destruction. Propolis has been reported to exhibit multiple pharmacological activities, including anti-inflammatory, antibacterial, and antioxidant effects. This study aimed to evaluate the effects of propolis extracts (PEs) collected from different regions of South Korea on LPS from P. gingivalis (LPS-PG)-induced inflammatory responses. Methods: Inflammatory responses were induced in RAW 264.7 macrophages using LPS-PG, followed by treatment with PEs fromeight different regions of South Korea at varying concentrations. Cell viability was assessed using the Cell Counting Kit-8 assay, and the production of nitric oxide (NO) and prostaglandin E2 (PGE2), key inflammatory mediators, was quantified using the Griess reaction and enzyme-linked immunosorbent assay, respectively. Protein expression levels of inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2) were assessed by Western blot analysis. Results: All PEs dose-dependently inhibited LPS-PG-induced NO and PGE2 production within nontoxic concentration ranges in RAW 264.7 cells (p＜0.05). Furthermore, PEs at a concentration of 20 μg/ml markedly reduced the protein expression of iNOS and COX-2, which regulate the production of NO and PGE2. Conclusion Korean propolis effectively suppresses LPS-PG–induced inflammatory responses, with comparable inhibitory effects observed across all regional extracts. These findings suggest that Korean propolis may serve as a natural anti-inflammatory agent for adjunctive prevention and treatment of periodontitis.

Background: Dental plaque biofilms play a key role in the development of oral diseases such as dental caries. Streptococcus mutans is the primary contributor to oral biofilm formation and leads to the formation of other microbial communities. Artemisia princeps (AP) is a traditional herbal medicine with various pharmacological activities, including analgesic, antibacterial, and anti-inflammatory. This study investigated the inhibitory effects of AP extract on the growth and biofilm formation of S. mutans. Methods: AP extract was obtained via methanol extraction. The antimicrobial activity of the AP extract against S. mutans was measured using the minimum bactericidal concentration (MBC) test. Antibiofilm activity of the AP extract was investigated using a human saliva-coated biofilm formation assay, and the biofilms were confirmed using crystal violet. Results: AP extract reduced the growth of S. mutans in a dose-dependent manner, with an MBC of 1,250 ppm. Additionally, at 1,000 ppm of AP extract, biofilm formation was inhibited by approximately 70% compared to the negative control group, which is a higher anti-biofilm activity than chlorhexidine solution as positive control. Conclusion AP extract, which showed high antibacterial and antibiofilm activities against S. mutans, has potential as a preventive and therapeutic agent against oral diseases.

Background: Dental plaque biofilms play a key role in the development of oral diseases such as dental caries. Streptococcus mutans is the primary contributor to oral biofilm formation and leads to the formation of other microbial communities. Artemisia princeps (AP) is a traditional herbal medicine with various pharmacological activities, including analgesic, antibacterial, and anti-inflammatory. This study investigated the inhibitory effects of AP extract on the growth and biofilm formation of S. mutans. Methods: AP extract was obtained via methanol extraction. The antimicrobial activity of the AP extract against S. mutans was measured using the minimum bactericidal concentration (MBC) test. Antibiofilm activity of the AP extract was investigated using a human saliva-coated biofilm formation assay, and the biofilms were confirmed using crystal violet. Results: AP extract reduced the growth of S. mutans in a dose-dependent manner, with an MBC of 1,250 ppm. Additionally, at 1,000 ppm of AP extract, biofilm formation was inhibited by approximately 70% compared to the negative control group, which is a higher anti-biofilm activity than chlorhexidine solution as positive control. Conclusion AP extract, which showed high antibacterial and antibiofilm activities against S. mutans, has potential as a preventive and therapeutic agent against oral diseases.

Objectives: Children and adolescents have a high prevalence of dental caries, primarily due to negligent oral care, frequent snack intake, and inadequate attention to oral disease prevention.Therefore, ensuring oral care and preventing dental caries during this period is essential. Economic barriers, particularly in low- and middle-income countries like the Philippines, limit access to dental care, highlighting the need for national oral health programs. Methods: This study aimed to investigate the oral health status of children in selected areas of the Philippines and to generate basic data for effective oral health promotion programs. We compared the oral health statuses of enrolled and newly enrolled students in schools with school-based dental clinics. Results: The results indicated that the prevalence of caries and the average number of carious permanent teeth were lower in enrolled students than in new students. Conclusions This finding suggests that school-based oral healthcare programs effectively improve children’s oral health and that introducing school-based dental clinics and establishing efficient systems are essential for improving oral health in low- and middle-income countries.

Background: Dental plaque biofilms play a key role in the development of oral diseases such as dental caries. Streptococcus mutans is the primary contributor to oral biofilm formation and leads to the formation of other microbial communities. Artemisia princeps (AP) is a traditional herbal medicine with various pharmacological activities, including analgesic, antibacterial, and anti-inflammatory. This study investigated the inhibitory effects of AP extract on the growth and biofilm formation of S. mutans. Methods: AP extract was obtained via methanol extraction. The antimicrobial activity of the AP extract against S. mutans was measured using the minimum bactericidal concentration (MBC) test. Antibiofilm activity of the AP extract was investigated using a human saliva-coated biofilm formation assay, and the biofilms were confirmed using crystal violet. Results: AP extract reduced the growth of S. mutans in a dose-dependent manner, with an MBC of 1,250 ppm. Additionally, at 1,000 ppm of AP extract, biofilm formation was inhibited by approximately 70% compared to the negative control group, which is a higher anti-biofilm activity than chlorhexidine solution as positive control. Conclusion AP extract, which showed high antibacterial and antibiofilm activities against S. mutans, has potential as a preventive and therapeutic agent against oral diseases.

Paroxysmal kinesigenic dyskinesia (PKD) is a diagnostic term for transient, involuntary abnormal movements triggered by sudden motions. The treatment for PKD differs from other paroxysmal dyskinesias, as it notably responds well to sodium channel blockers. We report a case of atypical PKD, coupled with paroxysmal exercise-induced dyskinesia (PED). Both PKD and PED in this patient showed a good response to oxcarbazepine. This case could be clinical evidence that paroxysmal dyskinesias could potentially be regarded as a spectrum disorder with overlapping features.

Plastic cannulae have attracted increasing interest as an alternative to traditional metal needles with the aim of reducing cannulation-related complications. We investigated whether the substitution volumes during hemodiafiltration differ using these two types of needles in dialysis patients. Methods: An intervention study involving 26 hemodialysis patients was conducted in Korea between March and September in 2021. Patients first received online hemodiafiltration using traditional metal needles, and thereafter plastic cannulae were used in a stepwise protocol. Repeated-measures design and linear mixed-effect models were used to compare substitution volumes between the two needle types with the same inner diameter. Results: The mean patient age was 62.7 years, and their mean dialysis vintage was 95.2 months. Most patients (92.3%) had an arteriovenous fistula as the vascular access. The substitution volume increased as blood flow and needle size increased for both plastic cannulae and metal needles. The substitution volume was significantly higher with 17-gauge (G) plastic cannulae than with 16-G metal needles at blood flow rates of 280, 300, and 330 mL/min. Similar results were obtained for 15-G metal needles and 16-G plastic cannulae at a blood flow rate of 330 mL/min. However, the patient ratings of pain on a visual analogue scale were higher for plastic cannulae. Conclusion: Higher substitution volumes were obtained at the same prescribed blood flow rate with plastic cannulae than with metal needles during online hemodiafiltration. Plastic cannulae are an option for achieving high-volume hemodiafiltration for patients with low blood flow rates.

Objective: This study was a preliminary study for the prevention programs for farmers' occupational diseases. It selected the priorities recognized by farmers, such as occupational diseases, and also identifies the effectiveness and feasibility of prevention programs among diseases recognized by farmers. Therefore, we plan to use it as basis data for future farmer safety and health programs.Method: The subjects of the study were farmers living in the region, selected through a snowball recruitment method, and a total of 671 people were targeted. The priority selection method was the Basic Priority Rating System (BPRS) method, and among the occupational diseases, programs to prevent musculoskeletal diseases, cardiovascular and respiratory diseases, and pesticide poisoning were surveyed on the effectiveness and feasibility of farmers. Results: Among occupational diseases, the highest priority was musculo-skeletal disease, followed by respiratory disease and pesticide poisoning. Among the programs for musculoskeletal disease, 'use of agricultural work convenience equipment and auxiliary tools' had the highest perceived effectiveness and feasibility. Among the five programs for pesticide poisoning, ‘equipment of protective equipment such as pesticide protective clothing/glove’ had the highest effectiveness at 67.4%, and ‘compliance with pesticide use instructions’ had the highest level of feasibility at 64.3%. Among the four programs to prevent respiratory diseases, ‘wearing a dust mask or gas mask’ was the highest at 65.5% in terms of both effectiveness and feasibility. Conclusion When carrying out safety and health programs for farmers, the priorities recognized by farmers should be taken into consideration, and the program contents should also be developed taking into account the size of effect and feasibility recognized by farmers.

Background/Aims: We evaluated nailfold capillaroscopy (NFC) of interstitial pneumonia with autoimmune features (IPAF) and compared it with that of patients with connective tissue disease-interstitial lung disease (CTD-ILD) and idiopathic interstitial pneumonia (IIP). Methods: Patients with newly diagnosed as ILD were evaluated using NFC. Baseline demographic, clinical, serological, and high-resolution CT findings were collected. NFC was semi-quantitatively scored with six domains ranging from 0 to 18. In addition, the overall patterns (sclerodermaon-scleroderma patterns) were determined. Results: A total of 81 patients (31 with CTD-ILD, 18 with IPAF, and 32 with IIP) were included. The non-specific interstitial pneumonia pattern was the most common ILD pattern in the CTD-ILD and IPAF groups, whereas the usual interstitial pneumonia pattern was the most common in the IIP group. The semi-quantitative score of the CTD-ILD group was higher than that of the IPAF or IIP groups (5.8 vs 4.2 vs 3.0, p < 0.001, respectively). Giant capillaries and haemorrhages were more frequently present in the CTD-ILD and IPAF groups than in the IIP group. A scleroderma pattern was present in 27.8% of the IPAF group, whereas none of the IIP patients showed a scleroderma pattern. Conclusions NFC findings may be useful in classifying patients with ILD into CTD-ILD/IPAF/IIP.

OBJECTIVES: This study investigated whether Janus kinase inhibitors (JAKis) raise the risk of cardiovascular disease (CVD), venous thromboembolism (VTE), and cancer in patients with rheumatoid arthritis (RA). METHODS: We conducted a real-world retrospective observational study using data obtained from the Korean National Health Insurance Service database. Two data sets were analyzed: tumor necrosis factor inhibitor (TNFi)/JAKi-naive RA patients (set 1) and all RA patients who used TNFis or JAKis (set 2). The incidence rate ratios (IRRs) and hazard ratios (HRs) for acute myocardial infarction (AMI), stroke, cardiovascular (CV)-related mortality, major adverse cardiovascular events (MACE), VTE, arterial thromboembolism (ATE), cancer, and all-cause mortality were compared between the JAKi and TNFi groups. RESULTS: Set 1 included 1,596 RA patients (JAKi group: 645; TNFi group: 951), and set 2 included 11,765 RA patients (JAKi group: 2,498; TNFi group: 9,267). No adverse events (AEs) showed significantly higher IRRs in the JAKi groups than in the TNFi groups of sets 1 and 2. The HRs for MACE in the JAKi groups of sets 1 and 2 were 0.59 (95% confidence [CI], 0.35 to 0.99) and 0.80 (95% CI, 0.67 to 0.97), respectively. The JAKi group of set 2 showed a significantly higher risk of all-cause mortality (HR, 1.71; 95% CI, 1.32 to 2.20), but the other AEs did not demonstrate increased risks in the JAKi groups. CONCLUSIONS In this study, JAKis did not increase the risk of AMI, stroke, CV-related mortality, MACE, VTE, ATE, or cancer in Korean RA patients relative to TNFis.