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1.
Comput Struct Biotechnol J ; 24: 237-246, 2024 Dec.
Article in English | MEDLINE | ID: mdl-38572167

ABSTRACT

Isolated patients pose physical challenges to medical staff owing to the need for protective gear. Additionally, communication issues arise within isolation rooms, hampering patient care. Mobile robots offer potential solutions, allowing for contactless communication and efficient task delegation, thereby reducing the risk of cross-contamination and minimizing staff workload. This preliminary study assessed the usability, acceptability, and potential for improvement of mobile robots in clinical nursing scenarios, focusing on nurses' perspectives. A preliminary test was conducted using mobile robots in a simulated hospital environment with 30 experienced nurses responsible for isolated patient care. Data were collected through interviews, surveys, and scenario-based tasks. Two scenarios were designed to evaluate the usability and effectiveness of mobile robots in real-world nursing situations. Nurses regarded mobile robots as highly usable and useful in healthcare settings. Robots efficiently handled tasks like remote supply delivery and medication distribution. Nurses recognized the potential for improved communication and efficiency with mobile robots; however, concerns were raised about the robots' limitations in providing emotional support and potential safety issues during emergencies. This research emphasizes the promising role of mobile robots in enhancing healthcare delivery within isolation rooms. While these findings indicate the potential for mobile robots, careful planning, training, and scenario development are crucial for their safe and effective integration into clinical settings. Further research, tailored scenarios, and a reevaluation of the evolving role of nurses in a technology-augmented healthcare environment are necessary, emphasizing the importance of understanding the capabilities and limitations of robotic assistance in patient care.

2.
Int J Mol Sci ; 25(8)2024 Apr 13.
Article in English | MEDLINE | ID: mdl-38673901

ABSTRACT

Irreversible electroporation (IRE) is a prominent non-thermal ablation method widely employed in clinical settings for the focal ablation therapy of solid tumors. Utilizing high-voltage, short-duration electric pulses, IRE induces perforation defects in the cell membrane, leading to apoptotic cell death. Despite the promise of irreversible electroporation (IRE) in clinical applications, it faces challenges concerning the coverage of target tissues for ablation, particularly when compared to other thermal ablation therapies such as radiofrequency ablation, microwave ablation, and cryoablation. This study aims to investigate the induced hyperthermal effect of IRE by applying a polydopamine nanoparticle (Dopa NP) coating on the electrode. We hypothesize that the induced hyperthermal effect enhances the therapeutic efficacy of IRE for cancer ablation. First, we observed the hyperthermal effect of IRE using Dopa NP-coated electrodes in hydrogel phantom models and then moved to in vivo models. In particular, in in vivo animal studies, the IRE treatment of rabbit hepatic lobes with Dopa NP-coated electrodes exhibited a two-fold higher increase in temperature (ΔT) compared to non-coated electrodes. Through a comprehensive analysis, we found that IRE treatment with Dopa NP-coated electrodes displayed the typical histological signatures of hyperthermal ablation, including the disruption of the hepatic cord and lobular structure, as well as the infiltration of erythrocytes. These findings unequivocally highlight the combined efficacy of IRE with Dopa NPs for electroporation and the hyperthermal ablation of target cancer tissues.


Subject(s)
Electrodes , Electroporation , Indoles , Nanoparticles , Polymers , Indoles/chemistry , Indoles/pharmacology , Animals , Polymers/chemistry , Nanoparticles/chemistry , Electroporation/methods , Rabbits , Liver/surgery , Liver/drug effects , Hyperthermia, Induced/methods
3.
Nurs Open ; 11(3): e2102, 2024 Mar.
Article in English | MEDLINE | ID: mdl-38530867

ABSTRACT

AIMS: To evaluate the validity and reliability of the self-care behaviour scale for patients with left ventricular assist devices. DESIGN: Methodological study. METHODS: The English version of the scale was translated into Korean, and it was then back-translated into English. Survey data were collected from 32 patients with left ventricular assist device in South Korea, and construct validity, content validity and reliability were analysed. RESULTS: The original self-care behaviour scale comprises three domains and 33 items, whereas the Korean self-care behaviour scale comprises 27 items and five domains: device management, wound management, symptom monitoring, activated healthcare system and self-care management. Cronbach's alpha for the overall scale was 0.94, and that for the five domains ranged from 0.36 to 0.90. The intraclass correlation coefficient for the overall scale was 0.89, and the five domains ranged from 0.71 to 0.88. CONCLUSION: The newly evaluated scale would be valid and reliable in measure self-care behaviour for patients with a left ventricular assist device. IMPLICATIONS FOR THE PROFESSION AND/OR PATIENT CARE: Patients can manage the left ventricular assist device on their own based on evidence and use it as a tool for effective communication with medical professionals.


Subject(s)
Heart-Assist Devices , Humans , Self Care , Reproducibility of Results , Surveys and Questionnaires , Republic of Korea
4.
Diabetes Res Clin Pract ; 210: 111639, 2024 Apr.
Article in English | MEDLINE | ID: mdl-38548106

ABSTRACT

AIMS: To evaluate the impact of remnant cholesterol (remnant-C) on chronic kidney disease (CKD) incidence in newly-diagnosed type 2 diabetes. METHODS: This retrospective cohort study used Korean National Health Insurance Service data on 212,836 patients with newly-diagnosed type 2 diabetes between 2009 and 2014. We conducted cox regression analysis to calculate hazard ratios (HRs) with 95% confidence intervals (CIs) for developing CKD according to remnant-C tertile. RESULTS: During a median follow-up duration of 5.23 years, 6,850 CKD cases developed. In the fully adjusted model, HRs and 95 % CIs for incident CKD increased in the highest tertile of baseline remnant-C compared to the lowest (HR [95 % CI]; 1.234 [1.159-1.314]). This association was more prominent in patients with hypertension or low-income status (P for interaction < 0.05). Increased HRs in the highest tertile of remnant-C was sustained in type 2 diabetes patients within target range of conventional lipid profile such as low-density lipoprotein cholesterol (LDL-C) < 100 mg/dL and < 70 mg/dL (1.165 [1.041-1.304] and 1.308 [1.063-1.609]), high-density lipoprotein cholesterol (HDL-C) (1.243 [1.155-1.338]) and triglyceride (1.168 [1.076-1.268]), respectively. CONCLUSIONS: In newly-diagnosed type 2 diabetes patients, higher remnant-C is independently associated with CKD incidence, even when conventional lipid values are well-controlled.


Subject(s)
Diabetes Mellitus, Type 2 , Renal Insufficiency, Chronic , Humans , Diabetes Mellitus, Type 2/diagnosis , Diabetes Mellitus, Type 2/epidemiology , Diabetes Mellitus, Type 2/complications , Retrospective Studies , Incidence , Renal Insufficiency, Chronic/diagnosis , Renal Insufficiency, Chronic/epidemiology , Renal Insufficiency, Chronic/etiology , Risk Factors , Cholesterol , Triglycerides , Cholesterol, HDL
5.
Diabetes Obes Metab ; 26(6): 2188-2198, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38425186

ABSTRACT

AIM: To investigate the efficacy and safety of pioglitazone compared to placebo when added to metformin plus dapagliflozin, a sodium-glucose cotransporter-2 (SGLT2) inhibitor, for patients with type 2 diabetes mellitus (T2DM). MATERIALS AND METHODS: In a multicentre study, with a randomized, double-blind, placebo-controlled design, 249 Korean patients with T2DM suboptimally managed on metformin and dapagliflozin were assigned to receive either pioglitazone (15 mg daily) or placebo for 24 weeks, followed by a 24-week pioglitazone extension. Primary outcomes included changes in glycated haemoglobin (HbA1c), with secondary outcomes assessing insulin resistance, adiponectin levels, lipid profiles, liver enzymes, body weight and waist circumference. RESULTS: Pioglitazone administration resulted in a significant reduction in HbA1c levels (from 7.80% ± 0.72% to 7.27% ± 0.82%) compared with placebo (from 7.79% ± 0.76% to 7.69% ± 0.86%, corrected mean difference: -0.42% ± 0.08%; p < 0.01) at 24 weeks. Additional benefits from pioglitazone treatment included enhanced insulin sensitivity, increased adiponectin levels, raised high-density lipoprotein cholesterol levels and reduced liver enzyme levels, resulting in improvement in nonalcoholic fatty liver disease liver fat score. Despite no serious adverse events in either group, pioglitazone therapy was modestly but significantly associated with weight gain and increased waist circumference. CONCLUSIONS: Adjunctive pioglitazone treatment in T2DM inadequately controlled with metformin and dapagliflozin demonstrates considerable glycaemic improvement, metabolic benefits, and a low risk of hypoglycaemia. These advantages must be weighed against the potential for weight gain and increased waist circumference.


Subject(s)
Benzhydryl Compounds , Diabetes Mellitus, Type 2 , Drug Therapy, Combination , Glucosides , Glycated Hemoglobin , Hypoglycemic Agents , Metformin , Pioglitazone , Humans , Glucosides/therapeutic use , Glucosides/adverse effects , Glucosides/administration & dosage , Pioglitazone/therapeutic use , Diabetes Mellitus, Type 2/drug therapy , Diabetes Mellitus, Type 2/blood , Metformin/therapeutic use , Metformin/adverse effects , Benzhydryl Compounds/therapeutic use , Benzhydryl Compounds/adverse effects , Double-Blind Method , Male , Female , Middle Aged , Hypoglycemic Agents/therapeutic use , Hypoglycemic Agents/adverse effects , Glycated Hemoglobin/analysis , Glycated Hemoglobin/drug effects , Glycated Hemoglobin/metabolism , Treatment Outcome , Thiazolidinediones/therapeutic use , Thiazolidinediones/adverse effects , Aged , Insulin Resistance , Sodium-Glucose Transporter 2 Inhibitors/therapeutic use , Sodium-Glucose Transporter 2 Inhibitors/adverse effects , Blood Glucose/drug effects , Blood Glucose/metabolism , Waist Circumference/drug effects , Republic of Korea , Adult
6.
J Nucl Med ; 65(5): 693-699, 2024 May 01.
Article in English | MEDLINE | ID: mdl-38548348

ABSTRACT

Radioactive 131I (RAI) therapy has potential effects for the treatment of Graves disease (GD). However, whether RAI therapy for GD increases cancer risk remains controversial in medicine and public health. We aimed to investigate whether the risk of cancer increases in patients with GD receiving RAI therapy compared with those who did not. Methods: We used the Korean National Health Insurance Service's National Health Information Database from 2004 to 2020 and defined GD as prescribing antithyroid drugs, RAI, or thyroidectomy as a treatment for GD (International Classification of Diseases, 10th revision, E05 group). We investigated the hazard ratios (HRs) of overall and site-specific cancers associated with RAI in patients with GD. Subsequent cancer was defined as a primary malignancy treated at least 1 y after RAI therapy. Results: In total, 10,737 patients with GD who received RAI therapy (7,193 women, 67.0%; mean age, 43.7 ± 13.4 y) were matched to 53,003 patients with GD who had never received RAI treatment (35,471 women, 66.9%; mean age, 43.8 ± 13.2 y) in a 1:4-5 ratio by age, sex, and health checkup data. The median follow-up duration was 8.7 y (interquartile range, 5.2-12.1 y), and the median cumulative RAI dose was 555 MBq (interquartile range, 370-630 MBq) in the RAI therapy group. During 2004-2020, the overall subsequent cancer rates were 5.66 and 5.84 per 1,000 person-years in the RAI and non-RAI groups, respectively, with an unadjusted HR of 0.97 (95% CI, 0.88-1.06); this remained at 0.96 (95% CI, 0.83-1.10) after adjustment for multiple clinical confounding factors. For cancer subtypes, the risk of leukemia was significantly increased, with an HR of 2.39 (95% CI, 1.17-4.91). However, a loss of statistical significance was observed after adjusting for confounding factors, which may be attributed to the limited number of absolute events. Moreover, cancer-specific mortality was not different between the RAI and the non-RAI groups, with an adjusted HR of 0.99 (95% CI, 0.66-1.47). Conclusion: This study identified that the overall cancer risk in patients with GD who received RAI therapy compared with those who did not was not significant in Korea. Further long-term studies are needed to determine the risks and advantages of RAI therapy in patients with GD.


Subject(s)
Graves Disease , Iodine Radioisotopes , Humans , Iodine Radioisotopes/therapeutic use , Iodine Radioisotopes/adverse effects , Graves Disease/radiotherapy , Female , Male , Adult , Middle Aged , Cohort Studies , Republic of Korea , Neoplasms, Radiation-Induced/etiology , Neoplasms/radiotherapy
7.
Intensive Crit Care Nurs ; 82: 103635, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38340544

ABSTRACT

OBJECTIVES: To identify nurses' caring behaviours toward patients with left ventricular assist devices and deepen their understanding of experiences in nursing care. Patients with left ventricular assist devices require care in many aspects, but there is limited in-depth research about caring behaviours and experiences from the perspective of nurses providing care. RESEARCH METHODOLOGY/DESIGN: Mixed methods study with a sequential explanatory design. Data were collected from clinical nurses with experience caring for patients using left ventricular assist devices in South Korea between May-August 2022. MAIN OUTCOME MEASURES: Quantitative data (n = 79) were collected through an online survey of the Caring Behaviours Inventory - 24 and analysed using descriptive statistics. For qualitative data (n = 15), nurses' caring experiences were collected through individual interviews and analysed using Colaizzi's phenomenological method. RESULTS: The overall average of caring behaviours was 4.80 ± 0.85, specifically, 'knowledge and skill' (5.04 ± 0.78), 'assurance' (5.01 ± 0.79), 'respect' (4.85 ± 0.90), and 'connectedness' (4.04 ± 0.99), respectively. The experience of caring was trapped in the uncomfortable reality of left ventricular assist device nursing, causing device-focused care, and approaching the essence of nursing through care focused on the patient's wholeness. CONCLUSIONS: Caring for patients with a left ventricular assist devices was challenging for nurses. However, through the care process, they realised the meaning of patient-centred care, reflected in the essence of nursing, and sublimated it into an opportunity to grow. IMPLICATIONS FOR CLINICAL PRACTICE: Nurses must focus on patient-centred care for left ventricular assist devices. To achieve this, it is essential to create a clinical environment and educational system for nurses to provide effective nursing care and enhance patient participation.


Subject(s)
Empathy , Nurses , Humans , Patients , Patient-Centered Care , Nurse-Patient Relations , Qualitative Research
8.
J Korean Soc Radiol ; 85(1): 24-35, 2024 Jan.
Article in Korean | MEDLINE | ID: mdl-38362391

ABSTRACT

Spontaneous intracranial hypotension (SIH), which generally presents as orthostatic headache, is increasingly being identified due to improved imaging technologies and heightened awareness. Many prior studies have reported the characteristic brain MRI findings of SIH. However, recently, focus has shifted to spinal MRI, as SIH is believed to be caused by leakage of cerebrospinal fluid from the spinal dural sac. Advanced techniques such as ultrafast CT myelography and digital subtraction myelography have emerged as useful technique to identify the site of cerebrospinal fluid leakage. In this review, we discuss the diagnosis, spinal MRI findings, imaging techniques, and treatment of SIH.

9.
Diabetes Metab J ; 48(1): 37-52, 2024 Jan.
Article in English | MEDLINE | ID: mdl-38173377

ABSTRACT

Novel strategies are required to reduce the risk of developing diabetes and/or clinical outcomes and complications of diabetes. In this regard, the role of the circadian system may be a potential candidate for the prevention of diabetes. We reviewed evidence from animal, clinical, and epidemiological studies linking the circadian system to various aspects of the pathophysiology and clinical outcomes of diabetes. The circadian clock governs genetic, metabolic, hormonal, and behavioral signals in anticipation of cyclic 24-hour events through interactions between a "central clock" in the suprachiasmatic nucleus and "peripheral clocks" in the whole body. Currently, circadian rhythmicity in humans can be subjectively or objectively assessed by measuring melatonin and glucocorticoid levels, core body temperature, peripheral blood, oral mucosa, hair follicles, rest-activity cycles, sleep diaries, and circadian chronotypes. In this review, we summarized various circadian misalignments, such as altered light-dark, sleep-wake, rest-activity, fasting-feeding, shift work, evening chronotype, and social jetlag, as well as mutations in clock genes that could contribute to the development of diabetes and poor glycemic status in patients with diabetes. Targeting critical components of the circadian system could deliver potential candidates for the treatment and prevention of type 2 diabetes mellitus in the future.


Subject(s)
Circadian Clocks , Diabetes Mellitus, Type 2 , Melatonin , Animals , Humans , Diabetes Mellitus, Type 2/metabolism , Circadian Rhythm/physiology , Circadian Clocks/physiology , Melatonin/metabolism , Sleep/physiology
10.
PLoS One ; 19(1): e0296914, 2024.
Article in English | MEDLINE | ID: mdl-38236798

ABSTRACT

Owing to the coronavirus disease pandemic, nursing education materials were developed for online use. However, as nursing involves working with human beings, the experience of face-to-face learning is important. This study investigated the learning satisfaction and anxiety experienced by nursing students based on their learning methods, expectations, and concerns about transitioning entirely to face-to-face learning. Using a mixed-methods design, 120 and 14 third- and fourth-year nursing students in Korea completed an online survey and individual interviews, respectively. Data were collected from July to August 2022 to assess nursing students' learning satisfaction, anxiety, expectations, and concerns based on their learning method. Learning satisfaction was 3.96±0.68 out of 5; the students who experienced "online lectures only" had significantly higher overall satisfaction (F = 3.22, p = .002), nursing lectures satisfaction (F = 2.01, p = .046), and nursing practicum satisfaction (F = 2.19, p = .031). Anxiety was measured using the Generalized Anxiety Disorder-7 tool and was evaluated at the "minimal level," with an average score of 3.46 ± 4.80 out of 21. From the qualitative results obtained through interviews, we derived three categories and nine subcategories. These categories include: the burden of unfamiliar learning situations that are difficult to predict, considerations about face-to-face learning needed to improve learning satisfaction, and the turning point that offsets the sense of deprivation during college life. The qualitative results provided evidence for determining specific goals for face-to-face learning that reflected the opinions of nursing students. To successfully transition to face-to-face learning, it is essential to consider a combination of student efforts, professors' attention, and university-level support to develop a learning approach that combines the strengths of both online and face-to-face learning. Maximizing the benefits of online learning, such as integrating face-to-face and online learning through repetitive reviews of recorded videos of face-to-face sessions at their own time, can effectively reduce students' burdens and anxiety and increase their learning satisfaction.


Subject(s)
Education, Nursing, Baccalaureate , Students, Nursing , Humans , Motivation , Education, Nursing, Baccalaureate/methods , Learning , Republic of Korea
11.
Comput Inform Nurs ; 42(3): 193-198, 2024 Mar 01.
Article in English | MEDLINE | ID: mdl-37607571

ABSTRACT

Self-care in daily life is important for patients with a left ventricular assist device. Mobile health interventions that use an application, the cloud, or telemonitoring enable active health management. This study reviewed the literature on the contents of mobile health interventions for patients with left ventricular assist devices and their effects. We searched four electronic databases (CINAHL, Cochrane Library, EMBASE, and MEDLINE) and reference lists in May 2022. The search terms consisted of "heart-assist devices" and "residence characteristics," combined with "mobile applications," "telemonitoring," "medical informatics applications," "cell*," "app*," "smartphone," and "cloud." In total, seven studies were included in the review. Mobile health interventions included (1) self-management contents and (2) interactions between patient and healthcare providers. The mobile health device and patient's health management were evaluated as a measure of the effect. This review provides a unique understanding for leveraging mobile health interventions as an effective approach to improve healthcare among patients with left ventricular assist devices. Future mobile health intervention strategies targeting these patients should fully consider the patient's perspective. Furthermore, they should be designed and applied to help with long-term health management, accompanied by an evaluation of their effectiveness on self-care improvement.


Subject(s)
Heart-Assist Devices , Mobile Applications , Telemedicine , Humans , Cell Phone , Computers, Handheld , Smartphone
12.
Nurse Educ ; 49(2): E74-E79, 2024.
Article in English | MEDLINE | ID: mdl-37678892

ABSTRACT

BACKGROUND: An active online learning environment enables 2-way communication wherein students can engage in problem-based learning and projects, unlike fragmented lecture-style classes. PURPOSE: This pilot study aimed to develop a metaverse-based online learning system and evaluate its usability. METHODS: A rapid prototyping model and Gather.town was used to design and develop a metaverse classroom. Participants were 10 nursing students from a college in South Korea. To evaluate usability, 10 tasks were configured and 2 pilot tests were conducted. The degree of difficulty, time required to perform tasks, and students' experience were investigated. RESULTS: The Metaverse for Education of Nursing Students was successfully completed, incorporating student feedback and addressing identified areas for improvement. CONCLUSION: This study reflects a learner-centered educational environment through the direct participation in the development process of the instructors who conducted the lectures. The metaverse space can be widely applied in creative nursing education in the future.


Subject(s)
Education, Distance , Education, Nursing, Baccalaureate , Students, Nursing , Humans , Pilot Projects , Nursing Education Research
13.
BMJ Open ; 13(12): e074381, 2023 12 13.
Article in English | MEDLINE | ID: mdl-38097233

ABSTRACT

OBJECTIVES: The COVID-19 pandemic resulted in suboptimal care for ischaemic stroke. Patients with diabetes mellitus (DM), a high-risk group for stroke, had compromised routine care during the pandemic, which increases the chance of stroke. We examined influence of the COVID-19 pandemic on the management of ischaemic stroke in patients with DM in South Korea. DESIGN: Retrospective, nationwide, population-based cohort study. SETTING: Data from the National Emergency Department Information System. PARTICIPANTS: We analysed 11 734 patients diagnosed with acute ischaemic stroke who underwent intravenous thrombolysis or endovascular thrombectomy between 2019 (the reference year) and 2020 (the pandemic year). Among them, 1014 subjects with DM were analysed separately. OUTCOME MEASURES: The frequency of emergency department (ED) visits, time from symptom onset to ED, from ED visit to admission and in-hospital mortality were compared between two periods in the overall population and in patients with DM. RESULTS: During the pandemic, the incidence of ischaemic stroke requiring urgent procedures increased by 7.57% in total and by 9.03% in patients with DM. Time delay from symptom onset to ED (reference vs pandemic, total: 1.50 vs 1.55 hours; p<0.01) and from ED visit to admission (total: 3.88 vs 3.92 hours; p=0.02) occurred during the pandemic in the overall population, but not significantly in patients with DM specifically. Older patients with DM showed higher chances of intensive care unit (ICU) admission during the pandemic: 53.5% vs 62.8% in age 70-79, 60.5% vs 71.9% in age 80-89 and 20.0% vs 70.8% in age ≥90 years (all p=0.01). There was no significant difference in in-hospital mortality between two periods (total: 8.2% vs 8.4%, p=0.65; DM: 8.1% vs 6.7%, p=0.25). CONCLUSIONS: During the COVID-19 pandemic, the incidence of ischaemic stroke requiring urgent procedures increased, and older patients with DM showed a higher ICU admission rate. However, the pandemic was not associated with an increased in-hospital stroke mortality.


Subject(s)
Brain Ischemia , COVID-19 , Diabetes Mellitus , Ischemic Stroke , Stroke , Humans , Aged , Aged, 80 and over , COVID-19/epidemiology , Retrospective Studies , Brain Ischemia/epidemiology , Brain Ischemia/therapy , Pandemics , Cohort Studies , Stroke/epidemiology , Stroke/therapy , Ischemic Stroke/epidemiology , Ischemic Stroke/therapy , Emergency Service, Hospital , Diabetes Mellitus/epidemiology
14.
ACS Appl Bio Mater ; 6(12): 5372-5384, 2023 Dec 18.
Article in English | MEDLINE | ID: mdl-37967413

ABSTRACT

Drug-releasing contact lenses are emerging therapeutic systems for treating ocular diseases. However, their applicability is limited by the burst release of drugs during lens wear and premature drug leakage during packaging, rendering the precise control of release duration or dose difficult. Here, we introduce a pH-sensitive contact lens exhibiting on-demand drug release only during lens wear and negligible premature drug leakage during packaging and transportation, which is accomplished by incorporating drug-loaded mesoporous silica nanoparticles (MSNs) coated with a pH-sensitive polymer into the contact lens. The compositionally optimized pH-sensitive polymer has a lower critical solution temperature (LCST) at >45 °C at pH 7.4, whereas its LCST decreases to <35 °C under acidic conditions (pH ∼ 6.5). Consequently, the MSN-incorporated contact lens sustainably releases the loaded drugs only in the acidic state at 35 °C, which corresponds to lens-wear conditions, through the MSN pores that open because of the shrinkage of polymer chains. Conversely, negligible drug leakage is observed from the contact lens under low-temperature or neutral-pH conditions corresponding to packaging and transportation. Furthermore, compared with the plain contact lens, the pH-sensitive contact lens exhibits good biocompatibility and unchanged bulk characteristics, such as optical (transmittance in the visible-light region), mechanical (elastic modulus and tensile strength), and physical (surface roughness, oxygen permeability, and water content) properties. These findings suggest that the pH-sensitive contact lens can be potentially applied in ocular disease treatment.


Subject(s)
Contact Lenses , Nanoparticles , Drug Liberation , Nanoparticles/chemistry , Polymers , Hydrogen-Ion Concentration
15.
Endocrinol Metab (Seoul) ; 38(6): 760-769, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37915121

ABSTRACT

BACKGRUOUND: G protein-coupled receptor 40 (GPR40) is a key molecule in diabetes and fatty liver, but its role in endothelial dysfunction remains unclear. Our objective in this study was to determine whether GPR40 agonists protect endothelial cells against palmitatemediated oxidative stress. METHODS: Human umbilical vein endothelial cells (HUVECs) were used to investigate effects of various GPR40 agonists on vascular endothelium. RESULTS: In HUVECs, AM1638, a GPR40-full agonist, enhanced nuclear factor erythroid 2-related factor 2 (NRF2) translocation to the nucleus and heme oxygenase-1 (HO-1) expression, which blocked palmitate-induced superoxide production. Those antioxidant effects were not detected after treatment with LY2922470 or TAK875, GPR40-partial agonists, suggesting that GPR40 regulates reactive oxygen species (ROS) removal in a ligand-dependent manner. We also found that palmitate-induced CCAAT/enhancer-binding protein homologous protein expression; X-box binding protein-1 splicing, nuclear condensation, and fragmentation; and caspase-3 cleavage were all blocked in an NRF2-dependent manner after AM1638 treatment. Both LY2922470 and TAK875 also improved cell viability independent of the NRF2/ROS pathway by reducing palmitate-mediated endoplasmic reticulum stress and nuclear damage. GPR40 agonists thus have beneficial effects against palmitate in HUVECs. In particular, AM1638 reduced palmitate-induced superoxide production and cytotoxicity in an NRF2/HO-1 dependent manner. CONCLUSION: GPR40 could be developed as a good therapeutic target to prevent or treat cardiovascular diseases such as atherosclerosis.


Subject(s)
NF-E2-Related Factor 2 , Superoxides , Humans , Endoplasmic Reticulum Stress , Human Umbilical Vein Endothelial Cells , NF-E2-Related Factor 2/metabolism , NF-E2-Related Factor 2/pharmacology , Reactive Oxygen Species/metabolism , Reactive Oxygen Species/pharmacology , Receptors, G-Protein-Coupled/metabolism , Superoxides/metabolism , Superoxides/pharmacology
16.
Br J Radiol ; 96(1150): 20220817, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37660371

ABSTRACT

OBJECTIVES: To quantify the proportion of fat within the rotator cuff muscles using CT histogram analysis (HA) and to compare fat fraction (FF) values obtained from CT and T2*-corrected 6-echo three-dimensional gradient-echo Dixon sequences. METHODS: Twenty-six patients who underwent both shoulder CT and MRI were enrolled. The FF of rotator cuff muscles was measured on FF maps of the Dixon technique. Using CT, the FF values were obtained in two ways: 1) CT mean Hounsfield Unit (HU) measurement-based fat quantification using subcutaneous fat and the teres major muscle as internal standards; and 2) CT HA-based fat quantification in which pixels from -190 to -30 HU were arbitrarily classified as fat, and those from -30 to 150 HU as muscle. Afterward, the relationship between FF values from MRI (FF-MR), CT mean HU-based analysis (FF-HU), and CT HA (FF-HA) was assessed. RESULTS: There were strong positive correlations (p < 0.001) between FF-MR and FF-HA, which were higher when compared with FF-HU (r = 0.90 vs. 0.77 for total). For a total of 104 rotator cuff muscles, the intraclass correlation between FF-MR and FF-HA was excellent (ICC, 0.90), which was higher than that between FF-MR and FF-HU (ICC, 0.76). The ICCs showed excellent interobserver agreement between FF-MR, FF-HU, and FF-HA (ICCs, 0.93-0.96). CONCLUSIONS: Fat quantification within the rotator cuff muscles using CT HA is both feasible and reliable. ADVANCES IN KNOWLEDGE: CT HA provides reliable quantification of intramuscular fat and has strengths regarding its retrospective applicability to conventional CT studies without additional radiation dose to subjecting patients.


Subject(s)
Rotator Cuff Injuries , Rotator Cuff , Humans , Rotator Cuff/diagnostic imaging , Retrospective Studies , Adipose Tissue/diagnostic imaging , Magnetic Resonance Imaging/methods , Rotator Cuff Injuries/diagnostic imaging , Tomography, X-Ray Computed
17.
Metabolism ; 148: 155678, 2023 Nov.
Article in English | MEDLINE | ID: mdl-37611822

ABSTRACT

OBJECTIVE: Diabetes mellitus (DM) and sarcopenia (SP) are growing public health concerns in an aging society, which share common pathophysiological mechanisms and are associated with serious health consequences. We investigated the impact of DM and SP on all-cause and cardiovascular mortalities in a longitudinal nationwide population-based study. METHODS: The study analyzed data from the Korea National Health and Nutrition Examination Survey conducted between 2008 and 2011, including information on appendicular skeletal muscle mass data. Mortality data up to December 2020 were retrieved from the National Death Registry. RESULTS: Among the 17,920 participants, 14,737 (82.2 %) had neither DM nor SP (DM-/SP-), 1349 (7.5 %) had only DM (DM+/SP-), 1425 (8.0 %) had only SP (DM-/SP+), and 409 (2.3 %) had both DM and SP (DM+/SP+). Compared to the DM-/SP- group, the DM-/SP+ and DM+/SP+ groups demonstrated increased all-cause mortality with adjusted hazard ratios (HRs) of 1.47 (95 % confidence interval [CI]: 1.14-1.89) and 1.85 (95 % CI: 1.28-2.69), respectively, while the DM+/SP- group did not (HR 1.29, 95 % CI: 0.97-1.74). The DM+/SP+ group demonstrated the highest risk of overall mortality (p-for-trend <0.001). Compared to the DM-/SP- group, only the DM+/SP+ group demonstrated increased cardiovascular mortality with HRs of 2.10 (95 % CI: 1.11-4.00) while the DM+/SP- (HR 1.35, 95 % CI: 0.79-2.30) and DM-/SP+ (HR 1.42, 95 % CI: 0.84-2.43) groups did not. CONCLUSIONS: The coexistence of DM and SP additively increased the risk of all-cause and cardiovascular mortality. Individuals with either disease may require more careful management to prevent the development of the other disease to reduce mortality.

18.
Diabetes Metab J ; 47(6): 826-836, 2023 11.
Article in English | MEDLINE | ID: mdl-37614025

ABSTRACT

BACKGRUOUND: There was limited evidence to evaluate the association between lifestyle habits and continuous glucose monitoring (CGM) metrics. Thus, we aimed to depict the behavioral and metabolic determinants of CGM metrics in insulin-treated patients with type 2 diabetes mellitus (T2DM). METHODS: This is a prospective observational study. We analyzed data from 122 insulin-treated patients with T2DM. Participants wore Dexcom G6 and Fitbit, and diet information was identified for 10 days. Multivariate-adjusted logistic regression analysis was performed for the simultaneous achievement of CGM-based targets, defined by the percentage of time in terms of hyper, hypoglycemia and glycemic variability (GV). Intake of macronutrients and fiber, step counts, sleep, postprandial C-peptide-to-glucose ratio (PCGR), information about glucose lowering medications and metabolic factors were added to the analyses. Additionally, we evaluated the impact of the distribution of energy and macronutrient during a day, and snack consumption on CGM metrics. RESULTS: Logistic regression analysis revealed that female, participants with high PCGR, low glycosylated hemoglobin (HbA1c) and daytime step count had a higher probability of achieving all targets based on CGM (odds ratios [95% confidence intervals] which were 0.24 [0.09 to 0.65], 1.34 [1.03 to 1.25], 0.95 [0.9 to 0.99], and 1.15 [1.03 to 1.29], respectively). And participants who ate snacks showed a shorter period of hyperglycemia and less GV compared to those without. CONCLUSION: We confirmed that residual insulin secretion, daytime step count, HbA1c, and women were the most relevant determinants of adequate glycemic control in insulin-treated patients with T2DM. In addition, individuals with snack consumption were exposed to lower times of hyperglycemia and GV.


Subject(s)
Diabetes Mellitus, Type 1 , Diabetes Mellitus, Type 2 , Hyperglycemia , Female , Humans , Blood Glucose/metabolism , Blood Glucose Self-Monitoring , Diabetes Mellitus, Type 1/drug therapy , Diabetes Mellitus, Type 2/drug therapy , Diabetes Mellitus, Type 2/chemically induced , Glycated Hemoglobin , Hyperglycemia/drug therapy , Hypoglycemic Agents/therapeutic use , Insulin/therapeutic use , Life Style
19.
Nurs Health Sci ; 25(3): 424-433, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37563786

ABSTRACT

This descriptive correlational study was conducted to examine the mediating effect of disability acceptance on the relationship between family strength and life satisfaction in individuals who have a sibling with a disability. The responses of 144 non-disabled siblings of persons with a disability were analyzed using panel data from the Korea Institute for Persons with Disabilities, and a regression analysis was performed. Family strength and acceptance of disabilities significantly affected the life satisfaction of siblings without disability. Regarding the effect of family strength on life satisfaction, acceptance of a sibling's disability by siblings without disability had a significant mediating effect. Our results suggest that strategies to enhance the acceptance of disabilities and promote family strength are necessary to improve the life satisfaction of individuals without disability as well as their siblings with disabilities. Family-centered interventions are warranted to promote positive acceptance of disabilities.


Subject(s)
Disabled Persons , Family Support , Sibling Relations , Adolescent , Adult , Humans , Cross-Sectional Studies , Family , Personal Satisfaction , Male , Female
20.
Clin Orthop Surg ; 15(4): 627-636, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37529192

ABSTRACT

Background: Deltoid function critically influences the results of reverse total shoulder arthroplasty (RTSA), and spontaneous deltoid attrition tears are frequently detected in cuff tear arthropathy (CTA) patients; however, the clinical impacts of these tears on RTSA outcomes are undetermined. Our aim was to determine the effect of spontaneous deltoid attrition tears on postoperative outcomes after RTSA without an additional deltoid procedure. Methods: Seventy-two patients who underwent RTSA for CTA with preoperative magnetic resonance imaging (MRI) and a minimum clinical follow-up of 1 year (mean, 32 months) were retrospectively reviewed in the study. Patients with a history of previous shoulder surgery or injury were excluded. The presence and location of deltoid attrition tears were determined in preoperative MRI. Propensity score matching (1:1) was performed to construct tear and no-tear groups. Finally, 21 patients, matched with respect to age, sex, hand dominance, symptom duration, medical comorbidity (obesity, diabetes mellitus, and coronary artery disease), Hamada grade, and implant type, were assigned to each group. Clinical outcomes (functional scores, isometric power, and range of motion) in the two groups were compared. Results: Deltoid attrition tears were detected in 21 of the 72 enrolled cases (29.1%). Anterolateral deltoid was the most frequent location and no tear was detected in the posterior deltoid. The tear rate increased with disease severity (Hamada G2, 4.8%; G3, 23.8%; > G4, 71.4%). No pre- or postoperative clinical variables differed significantly between the tear and no tear groups. Conclusions: Deltoid attrition tears were detected in 29% of CTA patients who underwent RTSA. The most common site was the anterolateral region and tear prevalence tended to increase with CTA progression. However, RTSA was found to provide satisfactory outcomes regardless of the presence of a deltoid attrition tear.


Subject(s)
Arthroplasty, Replacement, Shoulder , Rotator Cuff Injuries , Rotator Cuff Tear Arthropathy , Shoulder Joint , Humans , Arthroplasty, Replacement, Shoulder/methods , Rotator Cuff Tear Arthropathy/surgery , Retrospective Studies , Propensity Score , Treatment Outcome , Rupture/surgery , Shoulder Joint/surgery , Rotator Cuff Injuries/diagnostic imaging , Rotator Cuff Injuries/surgery , Range of Motion, Articular
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