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Objectives@#Ewha Womans University launched an on-campus Coronavirus disease-19 (COVID-19) response system called Ewha Safety Campus (ESC) Project in collaboration with the Seegene Inc. RTPCR diagnostic tests for COVID-19 were proactively provided to the participants. This study examines the effectiveness of the on-campus testing strategy in controlling the reproduction number (Rt ) and identifying student groups vulnerable to infection. @*Methods@#The ESC project was launched on March 2, 2022, with a pilot period from Feb 22 to March 1, 2022—the peak of the Omicron variant wave. We collected daily data on the RT-PCR test results of the students of Ewha Womans University from Mar 2 to Apr 30, 2022. We daily calculated Rt and compared it with that of the general population of Korea (women, people aged 20–29 years, and Seoul residents). We also examined the students vulnerable to the infection based on the group-specific Rt and positivity rate. @*Results@#A lower Rt was observed about 2 weeks after the implementation of the ESC Project than that of the general population. The lower Rt persisted during the entire study period. Dormitory residents had a higher Rt . The positivity rate was higher in students who did not comply with quarantine guidelines and did not receive the second dose of the vaccine. @*Conclusion@#The study provides scientific evidence for the effectiveness of the on-campus testing strategy and different infection vulnerabilities of students, depending on dormitory residence, compliance with the quarantine guidelines, and vaccination.
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Sarcopenic dysphagia is a complication of coronavirus disease 2019 (COVID-19). This report describes the approach to rehabilitation in a 65-year-old man with sarcopenic dysphagia who contracted severe COVID-19 and underwent awake venovenous extracorporeal membrane oxygenation (vv-ECMO). He started active rehabilitation while receiving vv-ECMO and underwent a course of comprehensive inpatient rehabilitation lasting 115 days. The sarcopenic dysphagia improved, and he regained physical functional independence without any complications at hospital discharge.
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no abstract available.
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During the 2019 domestic measles outbreak in Korea, measles occurred in healthcare workers with two doses of the measles, mumps and rubella vaccine, and the strict application of the Occupational Safety and Health Act required medical institutions to identify healthcare workers' immunity to measles and vaccinate the susceptible pockets. In response to the frontline medical institutions' request to review the measles recommendations and guidelines, the Korean Society of Infectious Diseases held a roundtable discussion on the causes of measles outbreak, timing of vaccinations, antibody tests, and booster vaccinations for healthcare workers, and financial support from the government and municipality as well as response strategies against the outbreak in healthcare settings. In Korea, the seroprevalence of measles is decreasing in the vaccine-induced immunity group during the maintenance of measles elimination over several years. The susceptible group against measles is in their 20s and 30s, and this may be because of waning immunity rather than nonresponse considering Korea's vaccine policy. The risk of measles nosocomial infection from community increases as these susceptible pockets actively engage in medical institutions.Thus, data on the immunity of low seroprevalence group in Korea are needed, further discussion is needed on the booster vaccination based on the data. Especially, antibody testing and vaccination in healthcare workers may be necessary to prevent the spread of measles in medical insutitutions, and further discussion is needed regarding specific testing methods, and the timing and frequency of test and vaccination.
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Sclerostin (SOST), a regulator of bone formation in osteocytes, inhibits the canonical Wnt signaling by interacting with low-density lipoprotein receptor-related protein 5/6 (LRP5/6) to prevent Wnt binding. Loss-of-function mutations of the SOST gene caused massive bone outgrowth and SOST-null mouse exhibited a high bone density phenotype. Therefore, SOST has been suggested as a promising therapeutic target for osteoporosis. A few previous studies with X-ray crystallography identified the binding interfaces between LRP6 and SOST, but there are limitations in these studies as they used truncated SOST protein or SOST peptide. Here, we analyzed the conformational dynamics of SOST-LRP6 E1E2 complex using hydrogen/deuterium exchange mass spectrometry (HDX-MS). We examined the effect of the C-terminal tail of SOST on LRP6 conformation upon complex formation. HDXMS analysis suggested a new potential binding interface for the C-terminal region of SOST that was missing from the previous crystal structure of the SOST-LRP6 E1E2 complex.
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During the 2019 domestic measles outbreak in Korea, measles occurred in healthcare workers with two doses of the measles, mumps and rubella vaccine, and the strict application of the Occupational Safety and Health Act required medical institutions to identify healthcare workers' immunity to measles and vaccinate the susceptible pockets. In response to the frontline medical institutions' request to review the measles recommendations and guidelines, the Korean Society of Infectious Diseases held a roundtable discussion on the causes of measles outbreak, timing of vaccinations, antibody tests, and booster vaccinations for healthcare workers, and financial support from the government and municipality as well as response strategies against the outbreak in healthcare settings. In Korea, the seroprevalence of measles is decreasing in the vaccine-induced immunity group during the maintenance of measles elimination over several years. The susceptible group against measles is in their 20s and 30s, and this may be because of waning immunity rather than nonresponse considering Korea's vaccine policy. The risk of measles nosocomial infection from community increases as these susceptible pockets actively engage in medical institutions.Thus, data on the immunity of low seroprevalence group in Korea are needed, further discussion is needed on the booster vaccination based on the data. Especially, antibody testing and vaccination in healthcare workers may be necessary to prevent the spread of measles in medical insutitutions, and further discussion is needed regarding specific testing methods, and the timing and frequency of test and vaccination.
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Sclerostin (SOST), a regulator of bone formation in osteocytes, inhibits the canonical Wnt signaling by interacting with low-density lipoprotein receptor-related protein 5/6 (LRP5/6) to prevent Wnt binding. Loss-of-function mutations of the SOST gene caused massive bone outgrowth and SOST-null mouse exhibited a high bone density phenotype. Therefore, SOST has been suggested as a promising therapeutic target for osteoporosis. A few previous studies with X-ray crystallography identified the binding interfaces between LRP6 and SOST, but there are limitations in these studies as they used truncated SOST protein or SOST peptide. Here, we analyzed the conformational dynamics of SOST-LRP6 E1E2 complex using hydrogen/deuterium exchange mass spectrometry (HDX-MS). We examined the effect of the C-terminal tail of SOST on LRP6 conformation upon complex formation. HDXMS analysis suggested a new potential binding interface for the C-terminal region of SOST that was missing from the previous crystal structure of the SOST-LRP6 E1E2 complex.
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Purpose@#In the recent antiretroviral therapy (ART) era, a large proportion of Korean patients with human immunodeficiency virus (HIV) infection were shown to have low CD4 cell counts at diagnosis and during ART initiation. We investigated the survival trends in patients living with HIV/acquired immunodeficiency syndrome (AIDS) in Korea who started ART in the 2000s, and evaluated the risk factors for mortality to elucidate the association between survival and low CD4 cell counts at ART initiation. @*Materials and Methods@#Patients with HIV infection who were aged >18 years and had started ART between 2001 and 2015 in the Korean HIV/AIDS cohort study were enrolled. We compared the clinical characteristics, mortality, and causes of death among the enrolled subjects based on the time of ART initiation. Cox regression analysis was used to estimate the adjusted hazard ratios of mortality based on the time of ART initiation. @*Results@#Among the 2474 patients enrolled, 105 (4.24%) died during the follow-up period of 9568 patient-years. Although CD4 cell counts at the time of ART initiation significantly increased from 161 [interquartile range (IQR), 73.5–303] in 2001–2003 to 273 (IQR, 108–399) in 2013–2015 (p40 years [adjusted hazard ratio, 3.71; 95% confidence interval (CI), 2.35–5.84] and low CD4 counts (<100 cells/mm3: adjusted hazard ratio, 2.99; 95% CI, 1.44–6.23) were significant risk factors for mortality. @*Conclusion@#Despite excellent HIV care available in the recent ART era, the survival of patients with HIV/AIDS undergoing ART did not improve between 2001 and 2015 in Korea.
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Background/Aims@#To investigate epidemiologic characteristics, clinical and economic burdens, and factors associated with mortality in complicated skin and skin structure infection (cSSSI) patients in Korea. @*Methods@#A retrospective, observational, nationwide study was conducted between April to July 2012 at 14 tertiary-hospitals in Korea. Eligible patients were hospitalized adults with community acquired cSSSI, who underwent surgical intervention and completed treatment between November 2009 and October 2011. Data on demography, clinical characteristics, outcomes and medical resource utilization were collected through medical record review. Direct medical costs were calculated by multiplying quantities of resources utilized by each unit price in Korea. @*Results@#Of 473 patients enrolled, 449 patients (except 24 patients with no record on surgical intervention) were eligible for analysis. Microbiological testing was performed on 66.1% of patients and 8.2% had multiple pathogens. Among culture confirmed pathogens (n = 297 patients, 340 episodes), 76.2% were gram-positive (Staphylococcus aureus; 41.2%) and 23.8% were gram-negative. The median duration of hospital stay was 16 days. Among treated patients, 3.3% experienced recurrence and 4.2% died in-hospital. The mean direct medical costs amounted to $4,195/ person, with the greatest expenses for hospitalization and antibiotics. The in-hospital mortality and total medical costs were higher in combined antibiotics therapy than monotherapy (p < 0.05). Charlson’s comorbidity index ≥ 3, standardized early warning scoring ≥ 4, sub-fascia infections and combined initial therapy, were all found to be associated with higher mortality. @*Conclusions@#Korean patients with community-onset cSSSI suffer from considerable clinical and economic burden. Efforts should be made to reduce this burden through appropriate initial treatment.
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Objective: To investigate the effect of Opuntia humifusa aqueous extract on gastric ulcers. Methods: An ethanol-induced model was used to examine the protective effect of Opuntia humifusa against gastric ulcers. The gastric ulcer index was evaluated via clinical observation and image analysis. Various inflammatory indicators were determined by RT-PCR and Western blotting assays. Results: The gastric ulcer index was reduced to 8% in the group treated with Opuntia humifusa aqueous extract compared with that in the control group. RT-PCR analysis revealed that MUC5AC expression was reduced to 39% in the control group compared with the non-treated group, whereas the omeprazole and Opuntia humifusa aqueous extract-treated groups increased the expression to 95% and 79%, respectively. Moreover, the expressions of various cytokines including TNF-α, IL-1β, and IL-6 were increased in the control group, while decreasing in Opuntia humifusa aqueous extract-treated group. Opuntia humifusa aqueous extract also suppressed the expressions of iNOS, COX-2, and its transcription factor NF-κB and increased mucus content considerably as compared to the control group. Conclusions: These results suggest that Opuntia humifusa aqueous extract is suitable as an alternative remedy for gastric ulcer treatment.
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BACKGROUND: Early detection of vascular change may improve prediction of subclinical stage of cardiovascular disease, allowing intervention to prevent overt vascular damage. High heart rate is known to increase cardiovascular morbidity and mortality rate in the general population and in individuals with cardiovascular disease. We aimed to investigate the association between resting heart rate (RHR) measured using electrocardiogram (ECG) and arterial stiffness measured using the cardio-ankle vascular index (CAVI) in men. METHODS: Data were collected from 5,629 men aged between 20 and 78 years who visited a single-site health promotion center. RHR was measured in a supine posture after resting for 10 minutes using an ECG. Arterial stiffness was measured using the CAVI. The cutoff value for high CAVI was ≥9.0. RESULTS: RHR was one of the major determinants of high CAVI after adjusting for age, waist circumference, mean arterial pressure, glycosylated hemoglobin level, triglyceride level, white blood cell count, and lifestyle factors. When RHR groups were defined according to the RHR quartiles, the odds ratio of group with RHR ≥70 bpm, for high CAVI was 3.62 (95% confidence interval [CI], 2.21–5.91) after adjusting for age and lifestyle factors. This association was not changed after adjusting for all other covariates (odds ratio, 2.39; 95% CI, 1.36–4.19). CONCLUSIONS: RHR measured using ECG is significantly associated with arterial stiffness in men not taking medications for hypertension, dyslipidemia, or diabetes. These findings suggest that RHR may be useful in assessing cardiovascular risk in men.
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Humanos , Masculino , Pressão Arterial , Arteriosclerose , Doenças Cardiovasculares , Dislipidemias , Eletrocardiografia , Promoção da Saúde , Frequência Cardíaca , Coração , Hemoglobinas Glicadas , Hipertensão , Contagem de Leucócitos , Estilo de Vida , Mortalidade , Razão de Chances , Postura , Medição de Risco , Triglicerídeos , Rigidez Vascular , Circunferência da CinturaRESUMO
OBJECTIVES: To manage evidence-based diseases, it is important to identify the characteristics of patients in each country.METHODS: The Korea HIV/AIDS Cohort Study seeks to identify the epidemiological characteristics of 1,442 Korean individuals with human immunodeficiency virus (HIV) infection (12% of Korean individuals with HIV infection in 2017) who visited 21 university hospitals nationwide. The descriptive statistics were presented using the Korea HIV/AIDS cohort data (2006-2016).RESULTS: Men accounted for 93.3% of the total number of respondents, and approximately 55.8% of respondents reported having an acute infection symptom. According to the transmission route, infection caused by sexual contact accounted for 94.4%, of which 60.4% were caused by sexual contact with the same sex or both males and females. Participants repeatedly answered the survey to decrease depression and anxiety scores. Of the total participants, 89.1% received antiretroviral therapy (ART). In the initial ART, 95.3% of patients were treated based on the recommendation. The median CD4 T-cell count at the time of diagnosis was 229.5 and improved to 331 after the initial ART. Of the patients, 16.6% and 9.4% had tuberculosis and syphilis, respectively, and 26.7% had pneumocystis pneumonia. In the medical history, sexually transmitted infectious diseases showed the highest prevalence, followed by endocrine diseases. The main reasons for termination were loss to follow-up (29.9%) and withdrawal of consent (18.7%).CONCLUSIONS: Early diagnosis and ART should be performed at an appropriate time to prevent the development of new infection.
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Feminino , Humanos , Masculino , Infecções Oportunistas Relacionadas com a AIDS , Ansiedade , Estudos de Coortes , Doenças Transmissíveis , Depressão , Diagnóstico , Diagnóstico Precoce , Doenças do Sistema Endócrino , Seguimentos , Infecções por HIV , HIV , Hospitais Universitários , Coreia (Geográfico) , Pneumonia por Pneumocystis , Prevalência , Inquéritos e Questionários , Sífilis , Linfócitos T , TuberculoseRESUMO
BACKGROUND@#Early detection of vascular change may improve prediction of subclinical stage of cardiovascular disease, allowing intervention to prevent overt vascular damage. High heart rate is known to increase cardiovascular morbidity and mortality rate in the general population and in individuals with cardiovascular disease. We aimed to investigate the association between resting heart rate (RHR) measured using electrocardiogram (ECG) and arterial stiffness measured using the cardio-ankle vascular index (CAVI) in men.@*METHODS@#Data were collected from 5,629 men aged between 20 and 78 years who visited a single-site health promotion center. RHR was measured in a supine posture after resting for 10 minutes using an ECG. Arterial stiffness was measured using the CAVI. The cutoff value for high CAVI was ≥9.0.@*RESULTS@#RHR was one of the major determinants of high CAVI after adjusting for age, waist circumference, mean arterial pressure, glycosylated hemoglobin level, triglyceride level, white blood cell count, and lifestyle factors. When RHR groups were defined according to the RHR quartiles, the odds ratio of group with RHR ≥70 bpm, for high CAVI was 3.62 (95% confidence interval [CI], 2.21–5.91) after adjusting for age and lifestyle factors. This association was not changed after adjusting for all other covariates (odds ratio, 2.39; 95% CI, 1.36–4.19).@*CONCLUSIONS@#RHR measured using ECG is significantly associated with arterial stiffness in men not taking medications for hypertension, dyslipidemia, or diabetes. These findings suggest that RHR may be useful in assessing cardiovascular risk in men.
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OBJECTIVES@#To manage evidence-based diseases, it is important to identify the characteristics of patients in each country.@*METHODS@#The Korea HIV/AIDS Cohort Study seeks to identify the epidemiological characteristics of 1,442 Korean individuals with human immunodeficiency virus (HIV) infection (12% of Korean individuals with HIV infection in 2017) who visited 21 university hospitals nationwide. The descriptive statistics were presented using the Korea HIV/AIDS cohort data (2006-2016).@*RESULTS@#Men accounted for 93.3% of the total number of respondents, and approximately 55.8% of respondents reported having an acute infection symptom. According to the transmission route, infection caused by sexual contact accounted for 94.4%, of which 60.4% were caused by sexual contact with the same sex or both males and females. Participants repeatedly answered the survey to decrease depression and anxiety scores. Of the total participants, 89.1% received antiretroviral therapy (ART). In the initial ART, 95.3% of patients were treated based on the recommendation. The median CD4 T-cell count at the time of diagnosis was 229.5 and improved to 331 after the initial ART. Of the patients, 16.6% and 9.4% had tuberculosis and syphilis, respectively, and 26.7% had pneumocystis pneumonia. In the medical history, sexually transmitted infectious diseases showed the highest prevalence, followed by endocrine diseases. The main reasons for termination were loss to follow-up (29.9%) and withdrawal of consent (18.7%).@*CONCLUSIONS@#Early diagnosis and ART should be performed at an appropriate time to prevent the development of new infection.
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OBJECTIVES: Kikuchi-Fujimoto disease (KFD) is characterized by lymphadenopathy and fever, and is usually self-limited. This study analyzed the clinical characteristics of pediatric patients with KFD. METHODS: This retrospective, observational, single-center study was conducted in South Korea from March 2008 to October 2015. KFD was diagnosed based on clinical, radiological or histological findings and excluded when there were any other causes of lymphadenopathy. Medical records were reviewed for clinical and laboratory manifestations. RESULTS: A total of 35 cases were included. The mean patient age was 12.1±2.9 years (range, 5 to 17 years); the male-to-female ratio was 1:0.8. The main clinical manifestations were cervical lymphadenopathy and fever in 34 cases (97%). The mean duration of fever was 12.2±8.3 days (range, 2 to 37 days). We noted enlargement of lymph nodes in the cervical, mesenteric (n=5, 14%), axillary (n=2, 6%), and inguinal (n=1, 3%) regions. Hepatosplenomegaly, loss of appetite, and rash were observed. On laboratory examinations, elevation of ferritin, leukopenia, and positivity for anti-nuclear antibodies were frequently observed. Twelve patients underwent biopsy and 23 cases were diagnosed by radiological findings. The mean duration of hospitalization for all cases was 7.9±2.9 days (range, 3 to 13 days) and steroids were administered in 10 cases. KFD recurrence was observed in 2 cases (5.7%) with the time to relapse of 7 months and 4 years. There were no cases with systemic lupus erythematous or other autoimmune disease. CONCLUSION: KFD should be considered in pediatric patients with lymphadenopathy and prolonged fever. Patients with KFD should be monitored for recurrence and the development of autoimmune disease.
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Adolescente , Criança , Humanos , Anticorpos , Apetite , Doenças Autoimunes , Biópsia , Exantema , Ferritinas , Febre , Linfadenite Histiocítica Necrosante , Hospitalização , Coreia (Geográfico) , Leucopenia , Linfonodos , Doenças Linfáticas , Prontuários Médicos , Pediatria , Recidiva , Estudos Retrospectivos , EsteroidesRESUMO
BACKGROUND/AIMS: Global efforts to prevent human immunodeficiency virus (HIV) infection and strengthen treatment programs have reduced the annual incidence of HIV infection. However, the incidence recently increased unexpectedly in Korea. Therefore, to understand the cause of the increase in HIV infection incidence in Korea, it is important to identify the mode of HIV transmission. METHODS: We included HIV-infected individuals enrolled in the Korea HIV/AIDS (acquired immune deficiency syndrome) Cohort from December 2006 to January 2018. The subjects were older than 18 years and were receiving care at 21 participating hospitals. They were interviewed by their physician at enrollment, and an epidemiological survey was conducted using a standardized questionnaire provided by a professional counseling nurse. RESULTS: There were 1,474 subjects: 1,377 men and 97 women. Their mean age was 41.4 ± 12.6 years, and the male-to-female ratio was 14.2. The transmission modes were as follows: homosexual and bisexual contacts in 885 (60.1%), heterosexual contacts in 508 (34.6%), blood transfusion and blood products in 5 (0.3%), and injected drug use in 1 (0.0%). Regarding age, the proportion infected by homosexual and bisexual contacts was higher in the younger age groups: 71.5% in subjects aged 18-29 years. When this age group was further subdivided, 92.9% of those aged 18–19 years were determined to be infected via homosexual and bisexual contacts. CONCLUSIONS: In Korea, HIV is transmitted predominantly via homosexual and bisexual contacts, which is more common among younger age groups and the cause of infections in most teenagers.
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Adolescente , Feminino , Humanos , Masculino , Síndrome da Imunodeficiência Adquirida , Bissexualidade , Transfusão de Sangue , Estudos de Coortes , Aconselhamento , Transmissão de Doença Infecciosa , Heterossexualidade , Infecções por HIV , HIV , Homossexualidade , Incidência , Coreia (Geográfico)RESUMO
OBJECTIVES: Immunization is considered one of the most successful and cost-effective public health interventions protecting communities from preventable infectious diseases. The Korean government set up a dedicated workforce for national immunization in 2003, and since then has made strides in improving vaccination coverage across the nation. However, some groups remain relatively vulnerable and require intervention, and it is necessary to address unmet needs to prevent outbreaks of communicable diseases. This study was conducted to characterize persistent challenges to vaccination. METHODS: The study adopted a qualitative method in accordance with the Consolidated Criteria for Reporting Qualitative Research checklist. Three focus group interviews were conducted with 15 professionals in charge of vaccination-related duties. The interviews were conducted according to a semi-structured guideline, and thematic analysis was carried out. Data saturation was confirmed when the researchers agreed that no more new codes could be found. RESULTS: A total of 4 main topics and 11 subtopics were introduced regarding barriers to vaccination. The main topics were vaccine hesitancy, personal circumstances, lack of information, and misclassification. Among them, vaccine hesitancy was confirmed to be the most significant factor impeding vaccination. It was also found that the factors hindering vaccination had changed over time and disproportionately affected certain groups. CONCLUSIONS: The study identified ongoing unmet needs and barriers to vaccination despite the accomplishments of the National Immunization Program. The results have implications for establishing tailored interventions that target context- and group-specific barriers to improve timely and complete vaccination coverage.
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Humanos , Lista de Checagem , Doenças Transmissíveis , Surtos de Doenças , Grupos Focais , Imunização , Programas de Imunização , Coreia (Geográfico) , Métodos , Saúde Pública , Pesquisa Qualitativa , VacinaçãoRESUMO
BACKGROUND: Renal disease is one of the leading causes of morbidity and mortality among people infected with human immunodeficiency virus (HIV). However, there are very few published studies about renal insufficiency in HIV-infected persons in Asia, especially in South Korea. MATERIALS AND METHODS: A cross-sectional study was performed to investigate the prevalence and risk factors of renal insufficiency, defined as <60 mL/min/1.73 m², in subjects in the Korea HIV/AIDS Cohort Study enrolled from 19 institutions between December 2006 and July 2013. Data at entry into the cohort were analyzed. RESULTS: Of 454 enrolled subjects, 24 (5.3%) showed renal insufficiency at entry into the cohort. The mean age of patients in the renal insufficiency group was 5.28 years and the majority were male subjects (91.7%). All the patients were receiving antiretroviral agents, mostly protease inhibitor-based regimens (76.4%), for an average of 19 months. In univariate analysis, older age (P = 0.002), diabetes mellitus (DM) (P = 0.0002), unknown route of transmission (P = 0.007), and taking indinavir (P = 0.0022) were associated with renal insufficiency. In multivariable analysis, older age [odds ratio (OR) 1.07, 95% confidence interval (CI) 1.03–1.12, P = 0.002], DM [OR 3.03, 95% CI 1.17–7.82, P = 0.022], unknown route of transmission [OR 6.15, 95% CI 1.77–21.33, P = 0.004], and taking indinavir [OR 3.07, 95% CI 1.17–8.05, P = 0.023] were independent risk factors of renal insufficiency. CONCLUSION: The prevalence of renal insufficiency in HIV-infected subjects in this study was relatively low, similar to that in other countries. Aging, DM, and taking indinavir were significantly associated with decreased glomerular filtration rate. Furthermore, unknown route of transmission was an independent risk factor, which was interpreted as a reflection of patient compliance. Further studies on the incidence and risk factors of renal insufficiency during HIV infection using follow-up cohort data are necessary.
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Humanos , Masculino , Envelhecimento , Antirretrovirais , Ásia , Estudos de Coortes , Estudos Transversais , Diabetes Mellitus , Seguimentos , Taxa de Filtração Glomerular , HIV , Infecções por HIV , Incidência , Indinavir , Coreia (Geográfico) , Mortalidade , Cooperação do Paciente , Prevalência , Insuficiência Renal , Fatores de RiscoRESUMO
OBJECTIVES: This paper aims to describe an outcome-based curriculum development process at a medical school that has difficulty in advancement from the higher stage outcomes to the individual lesson outcomes, and to propose a way to implement it practically. METHODS: We reviewed the objectives, strategies and previous products of the school's taskforce activities and suggested the principle of bidirectional approaches of outcome based curriculum development. RESULTS: The developing strategy identified such as firstly, the evaluation of present curriculum and then, the review of the outcomes developed previously with considering the nation-wide environmental change in medical education. Then, we selected one example course which was focused the resources of the school to, and finally the product of the example course was propagated to the other courses with central monitoring. CONCLUSION: Bidirectional model of ‘Top-down’ plus ‘Bottom-up’ approaches could be an efficient way to develop the outcome-based curriculum in a medical school, which has difficulties to advance the developing process due to various reasons including limited resources.