STATEMENT OF PROBLEM: The success of implants depends on intimate and direct contact of implant material on bone tissue and on functional relationship with soft tissue contact. Creation and maintenance of osseointegration depend on the understanding of the tissue's healing, repairing, and remodeling capacity and these capacities rely on cellular behavior. Altering the surface properties can modify cellular responses such as cell adhesion, cell motility, bone deposition. Therefore, various implant surface treatment methods are being developed for the improved bone cell responses. PURPOSE: The purpose of this study was to evaluate the responses of osteoblast-like cells to surface- modified titanium. MATERIALS AND METHODS: The experiment was composed of four groups. Group 1 represented the electropolished surface. Group 2 surfaces were machined surface. Group 3 and Group 4 were anodized surfaces. Group 3 had low roughness and Group 4 had high roughness. Physicochemical properties and microstructures of the d iscs were examined and the responses of osteoblast-like cells to the discs were investigated. The microtopography was observed by SEM. The roughness was measured by three-dimension roughness measuring system. The microstructure was analyzed by XRD, AES. To evaluate cell responses to modified titanium surfaces, osteoblasts isolated from calvaria of neonatal rat were cultured. Cell count, morphology, total protein measurement and alkaline phosphatase activities of the cultures were examined. RESULTS AND CONCLUSION: The results were as follows 1. The four groups showed specific microtopography respectively. Anodized group showed grain structure with micropores. 2. Surface roughness values were, from the lowest to the highest, electropolished group, machined group, low roughness anodized group, and high roughness anodized group. 3. Highly roughened anodized group was found to have increased surface oxide thickness and surface crystallinity. 4. The morphology of cells, flattened or spherical, were different from ach other. In the electropolished group and machined group, the cells were almost flattened. In two anodized groups, some cells were spherical and other cells were flattened. And the 14 day culture cells of all of the groups were nearly flattened due to confluency. 5. The number of attached cells was highest in low roughness anodized group. And the machined group had significantly lower cell count than any other groups(P<.05). 6. Total protein contents showed no difference among groups. 7. The level of alkaline phosphatase activities was higher in the anodized groups than electropolished and machined groups(P<.05).
Alkaline Phosphatase ; Animals ; Bone and Bones ; Cell Adhesion ; Cell Count ; Cell Movement ; Edible Grain ; Crystallins ; Osseointegration ; Osteoblasts ; Rats ; Skull ; Surface Properties ; Titanium*

Purpura fulminans is a potentially disabling and life-threatening disorder characterized by acute onset of progressive cutaneous hemorrhage and necrosis on distal extremities, and disseminated intravascular coagulopathy. We experienced a case of purpura fulminans due to Streptococcus pneumoniae. A 42-year-old women presented with skin petechiae, ecchymosis and gangrene on distal extremities with laboratory evidence of DIC. The latex agglutination test with CSF was positive at Streptococcus pneumoniae. To our knowledge, this is the first report of purpura fulminans caused by Streptococcus pneumoniae in Korea.
Adult ; Dacarbazine ; Ecchymosis ; Extremities ; Female ; Gangrene ; Hemorrhage ; Humans ; Korea ; Latex Fixation Tests ; Necrosis ; Purpura Fulminans* ; Purpura* ; Sepsis ; Skin ; Streptococcus pneumoniae* ; Streptococcus*

BACKGROUND: An automatic alarm system was developed was developed for unexpected vital sign instability in admitted patients to reduce staffing needs and costs related to rapid response teams. This was a pilot study of the automatic alarm system, the medical emergency system (MES), and the aim of this study was to determine the effectiveness of the MES before expanding this system to all departments. METHODS: This retrospective, observational study compared the performance of patients admitted to the pulmonary department at a single center using patient data from three 3-month periods (before implementation of the MES, December 2013–February 2014; after implementation of the MES, December 2014–February 2015 and December 2015–February 2016). RESULTS: A total of 571 patients were admitted to the pulmonary department during the three observation periods. During this pilot study, the MES automatically issued 568 alarms for 415 admitted patients. There was no significant difference in the rate of cardiopulmonary resuscitation (CPR) before and after application of the MES. The mortality rate also did not change. However, it appeared that CPR was prevented in four patients admitted from the general ward to the intensive care unit (ICU) during MES implementation. The median length of hospital stay and median length of ICU stay were not significantly different before and after MES implementation. CONCLUSIONS: Although we did not find a significant improvement in outcomes upon MES implementation, the CPR rate and mortality rate did not increase despite increased comorbidities. This was a small pilot study and, based on these results, we believe that the MES may have significant effects in longer-term and larger-scale studies.
Cardiopulmonary Resuscitation ; Clinical Alarms ; Comorbidity ; Critical Care ; Emergencies* ; Humans ; Intensive Care Units ; Internal Medicine ; Korea* ; Length of Stay ; Monitoring, Physiologic ; Mortality ; Observational Study ; Patients' Rooms ; Pilot Projects* ; Retrospective Studies ; Vital Signs

PURPOSE: This study was conducted to explore the nursing needs and satisfaction of patients who are hospitalized at hospice palliative care institutions. METHODS: This study included 80 hospice patients who were in-patients of the hospice department of two general hospitals in S city. The collected data were analyzed by descriptive statistics, t-test, one-way ANOVA, and Pearson's correlation coefficients using the IBM SPSS 20.0 program. RESULTS: The mean score of nursing needs and satisfaction were 3.58 (+/-0.31) and 3.25 (+/-0.20) respectively. Significant differences in hospice nursing needs and satisfaction were observed in terms of general characteristics including gender, education level, occupation, religion, support for medical expense and functional status. Significant positive correlation was found between the overall nursing needs and nursing satisfaction. CONCLUSION: Based on the results of this study, in order to improve the quality of hospice service, further study is necessary in a comprehensive manner to develop nursing intervention to meet physical, psychological/social, spiritual, and educational/referral nursing needs of hospice in-patients.
Education ; Hospice and Palliative Care Nursing ; Hospices* ; Hospitals, General ; Humans ; Needs Assessment ; Nursing Care ; Nursing* ; Occupations ; Palliative Care ; Personal Satisfaction

BACKGROUND: Sulfonylurea drugs have been used for many decades as one of the main families of drugs for the treatment of type 2 diabetes mellitus. Even though there are many opportunities to medicate sulfonylurea drugs concomitantly with many other drugs, and furthermore there have been several case reports on drug interactions with sulfonylurea drugs, there has been no clear demonstration revealing the mechanisms that cause these interactions. We therefore evaluated inhibitory potential of sulfonylurea drugs, including glibenclamide, glipizide and gliclazide, on the cytochrome P450 (CYP)-catalyzing enzymes using human liver microsomes. METHODS: The inhibitory effects of glibenclamide, glipizide and gliclazide, on the CYP-catalyzing reaction, were evaluated for CYP1A2, CYP2C9, CYP2C19, CYP2D6 and CYP3A4 using human liver microsomes, and probe drugs for each. RESULTS: Glibenclamide showed relative potent inhibitory effects on the CYP2C9- and CYP3A4-catallyzed reaction (IC50; 11.3 ( microM and 59.0 ( microM). The other CYP isoforms tested showed only weak inhibitory effects by due to glibenclamide (IC50 > 112 ( microM). Glipizide showed potent inhibitory effect on CYP3A4-catalyzed reaction only (IC50; 11.2 ( microM), and weak, or no, inhibitory effects on each on the other CYP isoforms tested (IC50 > 276 ( microM). CONCLUSION: The sulfonylurea drugs showed inhibitory potential on the CYP-catalyzing reaction in human liver microsomes. The results obtained in the present study provide insights into the potential of the drug interaction to ward drugs co-administered with sulfonylureas. It will be necessary to take into consideration the control of blood glucose, as well as therapeutic drug monitoring, to reduced toxicities when sulfonylurea drugs are co-administered with drugs of a narrow therapeutic range, or with severe dose-dependent toxicities.
Blood Glucose ; Cytochrome P-450 CYP1A2 ; Cytochrome P-450 CYP2D6 ; Cytochrome P-450 Enzyme System ; Cytochromes* ; Diabetes Mellitus, Type 2 ; Drug Interactions ; Drug Monitoring ; Gliclazide ; Glipizide ; Glyburide ; Humans* ; Liver* ; Microsomes, Liver* ; Protein Isoforms

OBJECTIVE: To investigate neural correlates associated with recovery of motor function over 6 months in patients with basal ganglia (BG) stroke using acetazolamide (ACZ) stress brain-perfusion single-photon emission computed tomography (SPECT). METHODS: Medical records of 22 patients presenting first-ever BG stroke were retrospectively reviewed. Regional cerebral blood flow (CBF) and cerebrovascular reserve (CVR) were measured for 9 regions in each cerebral hemisphere (primary motor cortex, supplementary motor area, premotor cortex, prefrontal cortex, temporal lobe, parietal lobe, occipital lobe, BG, and thalamus). The Fugl-Meyer Assessment (FMA) motor score was used to assess motor function. RESULTS: After ACZ injection, CBF of all regions of interest (ROIs) increased compared with baseline. Baseline CBF of all ROIs was not significantly correlated with changes in FMA upper or lower motor score. However, multivariate analysis revealed CVR was significantly associated with change in FMA upper score in the ipsilateral primary motor cortex (R2=0.216, p=0.017), the ipsilateral parietal lobe (R2=0.135, p=0.029), and the contralateral primary motor cortex (R2=0.210, p=0.041). CONCLUSION: CVR in the bilateral primary motor cortex and ipsilateral parietal lobe was associated with restoration of upper motor function 6 months after BG stroke. SPECT is a readily available imaging modality useful in studying brain residual function in patients with BG stroke.
Acetazolamide ; Basal Ganglia* ; Brain ; Cerebrovascular Circulation ; Cerebrum ; Humans ; Medical Records ; Motor Cortex ; Multivariate Analysis ; Occipital Lobe ; Parietal Lobe ; Prefrontal Cortex ; Recovery of Function ; Retrospective Studies ; Stroke* ; Temporal Lobe ; Tomography, Emission-Computed ; Tomography, Emission-Computed, Single-Photon*

OBJECTIVE: To investigate neural correlates associated with recovery of motor function over 6 months in patients with basal ganglia (BG) stroke using acetazolamide (ACZ) stress brain-perfusion single-photon emission computed tomography (SPECT). METHODS: Medical records of 22 patients presenting first-ever BG stroke were retrospectively reviewed. Regional cerebral blood flow (CBF) and cerebrovascular reserve (CVR) were measured for 9 regions in each cerebral hemisphere (primary motor cortex, supplementary motor area, premotor cortex, prefrontal cortex, temporal lobe, parietal lobe, occipital lobe, BG, and thalamus). The Fugl-Meyer Assessment (FMA) motor score was used to assess motor function. RESULTS: After ACZ injection, CBF of all regions of interest (ROIs) increased compared with baseline. Baseline CBF of all ROIs was not significantly correlated with changes in FMA upper or lower motor score. However, multivariate analysis revealed CVR was significantly associated with change in FMA upper score in the ipsilateral primary motor cortex (R2=0.216, p=0.017), the ipsilateral parietal lobe (R2=0.135, p=0.029), and the contralateral primary motor cortex (R2=0.210, p=0.041). CONCLUSION: CVR in the bilateral primary motor cortex and ipsilateral parietal lobe was associated with restoration of upper motor function 6 months after BG stroke. SPECT is a readily available imaging modality useful in studying brain residual function in patients with BG stroke.
Acetazolamide ; Basal Ganglia* ; Brain ; Cerebrovascular Circulation ; Cerebrum ; Humans ; Medical Records ; Motor Cortex ; Multivariate Analysis ; Occipital Lobe ; Parietal Lobe ; Prefrontal Cortex ; Recovery of Function ; Retrospective Studies ; Stroke* ; Temporal Lobe ; Tomography, Emission-Computed ; Tomography, Emission-Computed, Single-Photon*

PURPOSE: This descriptive study aims to describe the levels of mobility in community-dwelling older Koreans with chronic illnesses, and to examine the associations of their mobility with sleep patterns, physical activity and physical symptoms including fatigue and pain. METHODS: The participants were a total of 384 community-dwelling older adults recruited from three senior centers in Seoul, Korea. Measures included mobility assessed using 6-minute walk test (6MWT), physical activity behavior, sleep profiles, fatigue and pain. Data were collected from July to December 2012. RESULTS: The mean 6MWT distance was 212.68 meters. Over 90% of the study participants (n = 373) were classified as having impaired mobility using 400 meters as the cutoff point diagnostic criteria of normal mobility in 6MWT. The 6MWT distance was 246.68 meters for participants in their 60s, 212.32 meters for those in their 70s, and 175.54 meters for those in their 80s. Significant predictors of mobility included younger age, taking mediation, regular physical activity, female gender, higher income, higher fatigue and better perception on sleep duration, which explained 18% of the total variance of mobility. CONCLUSION: A high-risk group for mobility limitation includes low income, sedentary older men who are at risk for increased fatigue and sleep deficit. Further research should incorporate other psychological and lifestyle factors such as depression, smoking, drinking behavior, and/or obesity into the prediction model of mobility to generate specific intervention strategies for mobility enhancement recommendations for older adults.
Aged ; Aged, 80 and over ; Chronic Disease/*epidemiology ; Cross-Sectional Studies ; Fatigue/epidemiology ; Female ; Humans ; Independent Living/*statistics & numerical data ; Male ; *Mobility Limitation ; Motor Activity ; Pain/epidemiology ; Risk Factors ; Seoul/epidemiology ; Sleep ; Surveys and Questionnaires

The authors regret that in the above article it requires a change in the Acknowledgment section.