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1.
J Hosp Infect ; 151: 69-78, 2024 May 11.
Artículo en Inglés | MEDLINE | ID: mdl-38740300

RESUMEN

BACKGROUND: The healthcare water environment is a potential reservoir of carbapenem-resistant organisms (CROs). AIM: To report the role of the water environment as a reservoir and the infection control measures applied to suppress a prolonged outbreak of Klebsiella pneumoniae carbapenemase-producing Serratia marcescens (KPC-SM) in two intensive care units (ICUs). METHODS: The outbreak occurred in the ICUs of a tertiary hospital from October 2020 to July 2021. Comprehensive patient contact tracing and environmental assessments were conducted, and a case-control study was performed to identify factors associated with the acquisition of KPC-SM. Associations among isolates were assessed via pulsed-field gel electrophoresis (PFGE). Antibiotic usage was analysed. FINDINGS: The outbreak consisted of two waves involving a total of 30 patients with KPC-SM. Multiple environmental cultures identified KPC-SM in a sink, a dirty utility room, and a communal bathroom shared by the ICUs, together with the waste bucket of a continuous renal replacement therapy (CRRT) system. The genetic similarity of the KPC-SM isolates from patients and the environment was confirmed by PFGE. A retrospective review of 30 cases identified that the use of CRRT and antibiotics was associated with acquisition of KPC-SM (P < 0.05). There was a continuous increase in the use of carbapenems; notably, the use of colistin has increased since 2019. CONCLUSION: Our study demonstrates that CRRT systems, along with other hospital water environments, are significant potential sources of resistant micro-organisms, underscoring the necessity of enhancing infection control practices in these areas.

2.
J Physiol Pharmacol ; 72(2)2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-34374655

RESUMEN

Previously, we have reported that ginsenoside Rg3 has typical activities for neuroprotection and Aß42 clearance by modulating microglia. In this study, we determined the pivotal role of ginsenoside Rg3 in microglia and neuronal cells. In human microglia, Rg3 and its stereoisomers significantly restored inflammatory M1 to normal M0 state and promoted M2 activation by up-regulating acute cytokines such as interleukin-10 and Arginase 1. Moreover, scavenger receptor type A (SRA) was significantly elevated in the presence of ginsenoside Rg3 and 20(S)-Rg3. This indicated that ginsenoside Rg3 could play a crucial role in Aß uptake and clearance under activated M2 state. We also observed that soluble amyloid precursor protein-alpha (sAPPα) and ADAM10 levels were increased in APP swe-transfected Nuro-2a neuronal cells, whereas sAPPß was not processed, suggesting that ginsenoside Rg3 was involved in non-amyloidogenic processing. In immunocytochemistry, SRA and a disintegrin and metalloproteinase 10 (desintegrin and metalloproteinase-containing protein 10, ADAM10) were coincidently upregulated in the presence of ginsenoside Rg3 and its stereoisomers compared to those in normal control. Taken together, these results suggested that ginsenoside Rg3 could boost acute activation of microglia, promote Aß uptake, and elevate the sAPPα processing under activated M2 state. Although in vivo studies need to be performed, it is certain that ginsenoside Rg3 is highly involved in ameliorating the pathogenesis of neurodegeneration and can be a promising candidate for treating Alzheimer's disease as a new therapeutic intervention.


Asunto(s)
Enfermedad de Alzheimer , Ginsenósidos , Enfermedad de Alzheimer/tratamiento farmacológico , Citocinas , Ginsenósidos/farmacología , Humanos , Microglía
3.
AJNR Am J Neuroradiol ; 42(8): 1429-1436, 2021 08.
Artículo en Inglés | MEDLINE | ID: mdl-34045302

RESUMEN

BACKGROUND: Disproportionately enlarged subarachnoid space hydrocephalus is a specific radiologic marker for idiopathic normal pressure hydrocephalus. However, controversy exists regarding the prognostic utility of disproportionately enlarged subarachnoid space hydrocephalus. PURPOSE: Our aim was to evaluate the prevalence of disproportionately enlarged subarachnoid space hydrocephalus in idiopathic normal pressure hydrocephalus and its predictive utility regarding prognosis in patients treated with ventriculoperitoneal shunt surgery. DATA SOURCES: We used MEDLINE and EMBASE databases. STUDY SELECTION: We searched for studies that reported the prevalence or the diagnostic performance of disproportionately enlarged subarachnoid space hydrocephalus in predicting treatment response. DATA ANALYSIS: The pooled prevalence of disproportionately enlarged subarachnoid space hydrocephalus was obtained. Pooled sensitivity, specificity, and area under the curve of disproportionately enlarged subarachnoid space hydrocephalus to predict treatment response were obtained. Subgroup and sensitivity analyses were performed to explain heterogeneity among the studies. DATA SYNTHESIS: Ten articles with 812 patients were included. The pooled prevalence of disproportionately enlarged subarachnoid space hydrocephalus in idiopathic normal pressure hydrocephalus was 44% (95% CI, 34%-54%). The pooled prevalence of disproportionately enlarged subarachnoid space hydrocephalus was higher in the studies using the second edition of the Japanese Guidelines for Management of Idiopathic Normal Pressure Hydrocephalus compared with the studies using the international guidelines without statistical significance (52% versus 43%, P = .38). The pooled sensitivity and specificity of disproportionately enlarged subarachnoid space hydrocephalus for prediction of treatment response were 59% (95% CI, 38%-77%) and 66% (95% CI, 57%-74%), respectively, with an area under the curve of 0.67 (95% CI, 0.63-0.71). LIMITATIONS: The lack of an established method for assessing disproportionately enlarged subarachnoid space hydrocephalus using brain MR imaging served as an important cause of the heterogeneity. CONCLUSIONS: Our meta-analysis demonstrated a relatively low prevalence of disproportionately enlarged subarachnoid space hydrocephalus in idiopathic normal pressure hydrocephalus and a poor diagnostic performance for treatment response.


Asunto(s)
Hidrocéfalo Normotenso , Derivación Ventriculoperitoneal , Humanos , Hidrocéfalo Normotenso/diagnóstico por imagen , Hidrocéfalo Normotenso/cirugía , Imagen por Resonancia Magnética , Pronóstico , Espacio Subaracnoideo/diagnóstico por imagen
4.
Sci Rep ; 10(1): 15445, 2020 09 22.
Artículo en Inglés | MEDLINE | ID: mdl-32963275

RESUMEN

We investigated the relationship between the prognostic importance of anatomic tumour burden and subtypes of breast cancer using data from the Korean Breast Cancer Registry Database. In HR+/HER2+ and HR-/HER2-tumours, an increase in T stage profoundly increased the hazard of death, while the presence of lymph node metastasis was more important in HR+/HER2+ and HR-/HER2+ tumours among 131,178 patients with stage I-III breast cancer. The patterns of increasing mortality risk and tumour growth (per centimetre) and metastatic nodes (per node) were examined in 67,038 patients with a tumour diameter ≤ 7 cm and < 8 metastatic nodes. HR+/HER2- and HR-/HER2- tumours showed a persistent increase in mortality risk with an increase in tumour diameter, while the effect was modest in HER2+ tumours. Conversely, an increased number of metastatic nodes was accompanied by a persistently increased risk in HR-/HER2+ tumours, while the effect was minimal for HR-/HER2- tumours with > 3 or 4 nodes. The interactions between the prognostic significance of anatomic tumour burden and subtypes were significant. The prognostic relevance of the anatomic tumour burden was non-linear and highly dependent on the subtypes of breast cancer.


Asunto(s)
Neoplasias de la Mama/clasificación , Neoplasias de la Mama/patología , Receptor ErbB-2/metabolismo , Receptores de Estrógenos/metabolismo , Receptores de Progesterona/metabolismo , Carga Tumoral , Adolescente , Adulto , Anciano , Biomarcadores de Tumor/metabolismo , Neoplasias de la Mama/metabolismo , Neoplasias de la Mama/terapia , Terapia Combinada , Femenino , Estudios de Seguimiento , Humanos , Persona de Mediana Edad , Metástasis de la Neoplasia , Pronóstico , Tasa de Supervivencia , Adulto Joven
5.
Anaesthesist ; 69(5): 352-358, 2020 05.
Artículo en Inglés | MEDLINE | ID: mdl-32152737

RESUMEN

BACKGROUND: Intense noxious input from the periphery may result in central sensitization and hyperexcitability, thus accentuating subsequent postoperative pain. Parturients who undergo emergency cesarean section (C-sec) after experiencing labor pain often develop labor pain-induced sensitization. OBJECTIVE: This retrospective study evaluated whether parturients without epidural labor analgesia (ELA) who underwent emergency C­sec, experienced more severe postoperative pain and required more rescue analgesics during the postoperative period. METHODS: The institution's medical database was searched for parturients who underwent emergency C­sec under spinal anesthesia for any reason between January 2013 and December 2016. Those who underwent elective C­sec under spinal anesthesia were included as the reference arm. Parturients were divided into three groups: ELA, no-ELA and elective. Characteristics of patients and perioperative outcomes were evaluated. As primary outcomes, numerical rating scale (NRS) for postoperative pain (0-10) was recorded up to 96 h postoperatively, and use of rescue analgesics was evaluated at 6, 24, and 48 h postoperatively. RESULTS: In the ELA, no-ELA, and elective groups, 61, 73, and 88 parturients, respectively, were ultimately enrolled. The NRS for pain were similar among the three groups, except at 6 h postoperatively. Parturients in the no-ELA group demonstrated significantly higher NRS at 6 h postoperatively than those in the ELA group (P = 0.01).More patients in the no-ELA group required rescue analgesics than in the ELA (P = 0.001) and elective groups (P < 0.001) at 6-24 h postoperatively. Moreover, the proportion of patients requiring rescue analgesics ≥2 times was also significantly higher in the no-ELA group (vs. the ELA group, P = 0.004; vs. the elective group, P < 0.001). CONCLUSION: Parturients undergoing emergency C­sec without ELA management during labor experienced greater postoperative pain and a greater use of rescue analgesics during the postoperative period. The findings suggest that administration of ELA before emergency C­sec may act as pre-emptive analgesia against postoperative pain.


Asunto(s)
Analgesia Epidural , Anestesia Obstétrica , Cesárea , Dolor Postoperatorio/tratamiento farmacológico , Adulto , Analgésicos , Anestesia Epidural , Anestesia Raquidea , Anestésicos Locales/administración & dosificación , Femenino , Humanos , Embarazo , Estudios Retrospectivos
6.
Climacteric ; 23(2): 173-177, 2020 04.
Artículo en Inglés | MEDLINE | ID: mdl-31538495

RESUMEN

Background: The possibility of an association between early menopause and the risk of non-alcoholic fatty liver disease (NAFLD) is as yet unclear.Methods: The subjects consisted of 4354 postmenopausal women who participated in the 2010-2012 Korea National Health and Nutrition Examination Survey. Early, normal, and late menopause were defined as age at menopause <45 years, 45-54 years, and ≥55 years, respectively. NAFLD was defined by a hepatic steatosis index of >36.Results: When compared with normal menopausal women, early or late menopausal women had no significant differences in the odds ratios (ORs) of NAFLD: OR = 1.05, 95% confidence interval (CI), 0.83-1.32 and OR = 1.02, 95% CI, 0.75-1.39, respectively. These results remained similar after adjustment for known risk factors for NAFLD, reproductive factors, and comorbidities. The OR for NAFLD per 1-year increase in age at menopause was 1.01 (95% CI, 0.99-1.03; p = 0.329). The prevalence of advanced fibrosis was 2.1% (95% CI, 0.7-6.4%), 2.2% (95% CI, 1.3-3.8%), and 3.9% (95% CI, 1.2-12.2%) in early, normal, and late menopausal women, respectively.Conclusions: This study provides no evidence for an association of early menopause with NAFLD risk. However, NAFLD-related advanced fibrosis is highly prevalent in postmenopausal women.


Asunto(s)
Menopausia Prematura , Enfermedad del Hígado Graso no Alcohólico/etiología , Posmenopausia , Adulto , Anciano , Estudios de Casos y Controles , Estudios Transversales , Femenino , Encuestas Epidemiológicas , Humanos , Persona de Mediana Edad , Enfermedad del Hígado Graso no Alcohólico/epidemiología , Prevalencia , República de Corea/epidemiología
7.
Osteoporos Int ; 30(11): 2249-2256, 2019 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-31420700

RESUMEN

Effects of anti-osteoporosis medications such as anti-resorptive and anabolic agents on healing of osteoporotic spinal fracture were retrospectively investigated. The use of anabolic agent significantly enhanced fracture healing, reduced progressive collapse, and presented good pain relief. These findings suggest that proper selection of medication could improve initial management of acute osteoporotic spinal fractures (OSFs). INTRODUCTION: Although anti-osteoporosis medications have beneficial effects on prevention of osteoporotic spinal fractures (OSFs), few studies have compared effects of medications on fracture healing following OSFs. Therefore, the purpose of this study was to elucidate the effects of different anti-osteoporosis medications on radiological and clinical outcomes after acute OSFs. METHODS: A total of 132 patients diagnosed with acute OSFs were enrolled and allocated into three groups [group I (n = 39, no anti-osteoporosis medication), group II (n = 66, bisphosphonate), and group III (n = 27, parathyroid hormone (PTH)]. Radiological parameters including magnetic resonance (MR) classification, occurrence of intravertebral cleft (IVC), and clinical outcomes such as numerical rating scale (NRS) and Oswestry disability index were assessed. Risk analyses for IVC and progressive collapse were done along the related factors and medication type. RESULTS: IVC sign was observed in 30 patients. The rate of IVC sign was lower in group III (7.4%) than that in group I (20.5%) or group II (30.3%), although the difference was not statistically significant. Moreover, the degree of NRS improvement was better in group III than that in group I or group II (5.7 vs. 3.1 vs. 3.5, p < 0.001). On multiple regression analysis, mid-portion type fracture in MR classification was a significant risk factor for progressive OSFs. The use of PTH showed significant lower incidences of occurrence of IVC (odds ratio (OR) = 0.160) and increase in height loss (OR = 0.325). CONCLUSIONS: Different anti-osteoporosis medications presented different clinical and radiological results after acute OSFs. The use of anabolic agent significantly enhanced fracture healing, reduced progressive collapse, and presented better clinical outcomes. Proper selection of medication might improve initial management of acute OSFs.


Asunto(s)
Conservadores de la Densidad Ósea/administración & dosificación , Fracturas Osteoporóticas/tratamiento farmacológico , Fracturas de la Columna Vertebral/tratamiento farmacológico , Enfermedad Aguda , Anciano , Anciano de 80 o más Años , Anabolizantes/administración & dosificación , Femenino , Curación de Fractura/efectos de los fármacos , Humanos , Imagen por Resonancia Magnética , Masculino , Persona de Mediana Edad , Osteoporosis/tratamiento farmacológico , Fracturas Osteoporóticas/diagnóstico por imagen , Fracturas Osteoporóticas/patología , Radiografía , Estudios Retrospectivos , Factores de Riesgo , Fracturas de la Columna Vertebral/diagnóstico por imagen , Fracturas de la Columna Vertebral/patología
8.
Clin Microbiol Infect ; 24(10): 1104.e5-1104.e8, 2018 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-29870856

RESUMEN

OBJECTIVES: The aim of this study was to compare clearance rates and related characteristics of patients carrying KPC-producing carbapenemase-producing Enterobacteriaceae (CPE) with those of patients carrying NDM-1-producing CPE. METHODS: From November 2010 to October 2016, consecutive patients whose clinical or surveillance cultures yielded CPE were prospectively identified and followed in a 2700-bed tertiary referral hospital. CPE control protocols included strict single-room isolation, contact precautions and weekly surveillance cultures. CPE clearance was defined as three or more consecutive CPE-negative cultures without relapse. We compared patients carrying NDM-1 CPE and KPC and those with and without clearance. The time to CPE clearance or discharge was assessed using the Kaplan-Meier method and NDM-1 CPE and KPC CPE groups were compared. RESULTS: A total of 147 patients carrying CPE, 106 with NDM-1 and 41 with KPC, were included in the study. At the time of hospital discharge, 12 of the 106 patients carrying NDM-1 CPE were clear of CPE, whereas none of the KPC CPE patients were (NDM-1, 11.3% (12/106) versus KPC, 0% (0/41), p 0.02). There was no significant association between CPE clearance and factors such as an immunocompromised condition, antibiotic usage, or species of colonizing organism. Among 40 patients who were readmitted, CPE non-clearance was significantly higher in patients carrying KPC CPE (NDM-1, 36.7% (11/30) versus KPC, 80.0% (8/10), p 0.03). CONCLUSIONS: Compared with NDM-1 CPE patients, patients carrying KPC CPE had a significantly lower probability of clearance during hospitalization. Furthermore, KPC CPE carriage persisted for a substantial period of time following patient discharge.


Asunto(s)
Antibacterianos/uso terapéutico , Enterobacteriaceae Resistentes a los Carbapenémicos/efectos de los fármacos , Infecciones por Enterobacteriaceae/tratamiento farmacológico , beta-Lactamasas/metabolismo , Anciano , Proteínas Bacterianas/metabolismo , Enterobacteriaceae Resistentes a los Carbapenémicos/metabolismo , Infecciones por Enterobacteriaceae/metabolismo , Femenino , Humanos , Control de Infecciones/métodos , Masculino , Pruebas de Sensibilidad Microbiana/métodos , Persona de Mediana Edad , Estudios Prospectivos , Centros de Atención Terciaria
9.
J Eur Acad Dermatol Venereol ; 32(4): 639-644, 2018 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-29178495

RESUMEN

BACKGROUND: While device-based acne treatments are widely applied for patients not tolerating conventional medications, related controlled studies have been still limited. Recently, non-ablative 1450-nm diode laser (DL) and fractional microneedling radiofrequency (FMR) have been effectively used for acne, in addition to well-recognized dermal remodelling effects. OBJECTIVE: To compare the clinical course of acne treatment between DL and FMR. METHODS: Twenty-five Korean patients with mild-to-moderate facial acne completed treatments with DL and FMR through a 20-week, randomized split-face study. One randomly assigned half side of each patient's face received DL and the other side by FMR. Treatments were scheduled to receive three consecutive sessions at 4-week intervals. Objective assessments including revised Leeds grades, lesion counts, sebum output measurements, and patients' subjective satisfaction were investigated. RESULTS: Both DL and FMR demonstrated steady improvement of acne and seborrhoea during treatment sessions. While results between two devices were similar during treatment sessions, FMR was superior to DL in the 12-week follow-up. Patients' subjective assessments for seborrhoea improvement were similar between two devices, while those for acne, skin texture, and acne scars were more satisfactory for FMR. For safety profile, no significant difference was observed between two regimens, while mild postinflammatory hyperpigmentation was observed only in DL side. CONCLUSION: Both DL and FMR demonstrated efficacies for acne and seborrhoea, with reasonable safety profile. FMR was more effective than DL for the long-term maintenance, and subjective assessments for texture and scar improvements. Therefore, a few sessions of these devices would be a viable option for acne treatments.


Asunto(s)
Acné Vulgar/terapia , Dermatitis Seborreica/terapia , Terapia por Láser/instrumentación , Agujas , Acné Vulgar/patología , Acné Vulgar/radioterapia , Adolescente , Adulto , Dermatitis Seborreica/patología , Dermatitis Seborreica/radioterapia , Femenino , Humanos , Terapia por Láser/efectos adversos , Masculino , Agujas/efectos adversos , Satisfacción del Paciente , Estudios Prospectivos , República de Corea , Sebo/metabolismo , Índice de Severidad de la Enfermedad , Resultado del Tratamiento , Adulto Joven
10.
Diabetes Metab ; 44(4): 328-332, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-29107455

RESUMEN

PURPOSE: To evaluate the risk of primary open-angle glaucoma (POAG) development in type 2 diabetes mellitus (T2DM) patients. METHODS: In this 11-year longitudinal study based on the Korean National Health Insurance research database, the data collected comprised 1,025,340 (2.2%) participants who were randomly selected from 46,605,433 Korean residents in 2002. The database was analyzed to identify participants with an initial diagnosis of T2DM in 2003-2004. The control group was composed of participants without T2DM who were propensity-score-matched, five controls per T2DM patient, according to age, gender, household income, residential area and underlying diseases, including hypertension, dyslipidaemia, coronary heart disease, cerebrovascular disease and thyroid disease. Cox proportional-hazards regression was used to calculate the overall hazard ratios (HRs) in participants with and without T2DM for development of POAG before and after adjusting for confounding factors. RESULTS: There were 12,657 participants with T2DM and 63,285 propensity-score-matched controls without T2DM. POAG developed in 413 (3.3%) and 1188 (1.9%) participants in the T2DM and control groups, respectively. T2DM was associated with an increased risk of POAG development [HR: 1.80; 95% confidence interval (CI): 1.58-2.04] after adjusting for age, gender, household income and other potential confounders. CONCLUSION: T2DM was significantly associated with the development of POAG after adjusting for potential confounders in the Korean population.


Asunto(s)
Diabetes Mellitus Tipo 2/complicaciones , Diabetes Mellitus Tipo 2/epidemiología , Glaucoma de Ángulo Abierto/epidemiología , Glaucoma de Ángulo Abierto/etiología , Adulto , Anciano , Femenino , Humanos , Estudios Longitudinales , Masculino , Persona de Mediana Edad , Puntaje de Propensión , República de Corea/epidemiología
11.
Int J Tuberc Lung Dis ; 21(7): 818-824, 2017 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-28633708

RESUMEN

SETTING: Tertiary referral centre, Samsung Medical Center, South Korea. OBJECTIVE: To evaluate the pharmacokinetic parameters and toxicities of once-daily amikacin (AMK) dosing for lung disease due to Mycobacterium abscessus. DESIGN: A retrospective review of 48 patients with M. abscessus lung disease who received once-daily AMK for 4 weeks between January 2012 and June 2015. RESULTS: With a starting dose of 15 mg/kg/day and adjustment of AMK dose according to the peak serum level (Cmax), the Cmax target of 55-65 µg/ml was achieved in 31.3% (15/48) of patients in the first week, 68.8% (33/48) in week 2, 91.7% (44/48) in week 3 and 95.8% (46/48) in week 4. Transient nephrotoxicity developed in 6.3% (3/48) of patients and ototoxicity in 25.0% (6/24), which was determined by audiogram as hearing loss, asymptomatic in five patients and tinnitus in one. Multivariate analysis revealed that the highest drug concentration 12 h after administration was significantly associated with the development of toxicities (adjusted odds ratio 1.862, P = 0.047). CONCLUSION: Our results suggest that once-daily AMK for 4 weeks with a target Cmax of 55-65 µg/ml can be used in patients with M. abscessus lung disease, with careful monitoring of toxicity.


Asunto(s)
Amicacina/administración & dosificación , Antibacterianos/administración & dosificación , Infecciones por Mycobacterium no Tuberculosas/tratamiento farmacológico , Mycobacterium abscessus/aislamiento & purificación , Anciano , Amicacina/efectos adversos , Amicacina/farmacocinética , Antibacterianos/efectos adversos , Antibacterianos/farmacocinética , Esquema de Medicación , Monitoreo de Drogas/métodos , Femenino , Pérdida Auditiva/inducido químicamente , Pérdida Auditiva/epidemiología , Humanos , Enfermedades Renales/inducido químicamente , Enfermedades Renales/epidemiología , Masculino , Persona de Mediana Edad , Análisis Multivariante , Infecciones por Mycobacterium no Tuberculosas/microbiología , República de Corea , Estudios Retrospectivos , Acúfeno/inducido químicamente , Acúfeno/epidemiología
12.
Int J Tuberc Lung Dis ; 21(3): 345-350, 2017 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-28225347

RESUMEN

OBJECTIVE: To evaluate the proportion and clinical characteristics of patients with non-tuberculous mycobacteria (NTM) lung disease diagnosed based on positive culture results in liquid medium only. METHODS: We reviewed the medical records of 978 patients diagnosed with NTM lung disease. All clinical samples were cultured in both solid and liquid media. RESULTS: Of the 978 patients, 111 (11.3%) were culture-positive in liquid medium only (liquid culture group), and 867 (88.7%) (solid culture group) on solid medium, regardless of the culture results in liquid medium. At the time of diagnosis, the liquid culture group was less likely than the solid culture group to have haemoptysis (11.7% vs. 20.0%, P = 0.04), positive sputum smear for acid-fast bacilli (14.4% vs. 50.2%, P < 0.001) or the fibrocavitary form of NTM lung disease (3.6% vs. 14.6%, P = 0.001). During the median follow-up period of 28.9 months (interquartile range 19.1-41.6), the proportion of patients requiring antibiotic treatment was lower in the liquid culture group than in the solid culture group (44.1% vs. 61.6%, P < 0.001). CONCLUSIONS: Liquid media culture is helpful in the diagnosis of patients with less severe forms of NTM lung disease.


Asunto(s)
Enfermedades Pulmonares/diagnóstico , Infecciones por Mycobacterium no Tuberculosas/diagnóstico , Micobacterias no Tuberculosas/aislamiento & purificación , Esputo/microbiología , Anciano , Medios de Cultivo , Femenino , Humanos , Enfermedades Pulmonares/microbiología , Masculino , Persona de Mediana Edad , Infecciones por Mycobacterium no Tuberculosas/microbiología , Índice de Severidad de la Enfermedad
13.
Int J Tuberc Lung Dis ; 21(1): 100-106, 2017 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-28157472

RESUMEN

SETTING: Citation analyses aid in assessing quality, trends and future directions of research fields. OBJECTIVE: To identify the most influential articles on infections caused by non-tuberculous mycobacteria (NTM) in the last 20 years. DESIGN: We performed a cited reference search of the Web of Science database from 1995 to 2015. The 100 most cited articles on NTM infections were analysed. RESULTS: The top 100 articles were cited 114-1471 times, and were published from 1995 to 2013. Sixty-five were laboratory-based, basic science articles, with the major topics being pathophysiology (n = 20) and molecular methods for NTM identification (n = 15). Among the 35 non-laboratory studies, major topics were clinical management (n = 15) and epidemiology (n = 14). The top article was a clinical treatise on the management of NTM disease, published in 2007. Although there was a correlation between article rank and journal impact factor (P = 0.043, ρ = -0.202), the five articles from the journals with highest impact factors did not rank among the top 10 articles. CONCLUSION: A large proportion of influential articles on NTM infection are basic scientific studies, and the most influential articles are not always published in high-impact journals.


Asunto(s)
Bibliometría , Infecciones por Mycobacterium no Tuberculosas , Publicaciones Periódicas como Asunto/tendencias , Humanos , Factor de Impacto de la Revista
14.
Int J Tuberc Lung Dis ; 20(12): 1594-1602, 2016 12.
Artículo en Inglés | MEDLINE | ID: mdl-27931333

RESUMEN

BACKGROUND: Little information is available regarding vitamin D-associated factors in patients with non-tuberculous mycobacteria (NTM) lung disease. OBJECTIVE: To determine the association between vitamin D-related factors and susceptibility to NTM lung disease. DESIGN: The relative gene expression levels of cathelicidin (CAMP), defensin (DEFB4), vitamin D receptor (VDR) and 1-hydroxylase (CYP27B1), as well as the serum levels of 25-hydroxyvitamin D (25[OH]D), cathelicidin (LL-37), defensin (hBD-2) and vitamin D-binding protein (DBP) from 82 patients with NTM lung disease and 28 control subjects were analysed. RESULTS: Gene expression of CAMP and DEFB4 was significantly higher, and gene expression of VDR and CYP27B1 was significantly lower, in NTM patients than controls. Serum LL-37 and hBD-2 levels were not significantly different between NTM patients and controls; however, the serum DBP level was higher in NTM patients than controls. The serum vitamin D status of patients did not correlate with serum LL-37, hBD-2, or DBP concentration or gene expression of CAMP, DEFB4, VDR or CYP27B1. CONCLUSION: A higher level of gene expression for antimicrobial peptide is more likely to be associated with NTM lung disease than serum vitamin D status.


Asunto(s)
Infecciones por Mycobacterium no Tuberculosas/sangre , Deficiencia de Vitamina D/epidemiología , Vitamina D/sangre , 25-Hidroxivitamina D3 1-alfa-Hidroxilasa/genética , 25-Hidroxivitamina D3 1-alfa-Hidroxilasa/metabolismo , Anciano , Péptidos Catiónicos Antimicrobianos/sangre , Estudios de Casos y Controles , Catelicidinas/genética , Catelicidinas/metabolismo , Línea Celular , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infecciones por Mycobacterium no Tuberculosas/complicaciones , Micobacterias no Tuberculosas/aislamiento & purificación , Prevalencia , Receptores de Calcitriol/genética , Receptores de Calcitriol/metabolismo , República de Corea/epidemiología , Deficiencia de Vitamina D/sangre , Deficiencia de Vitamina D/complicaciones , beta-Defensinas/genética , beta-Defensinas/metabolismo
15.
Methods Enzymol ; 572: 51-64, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-27241749

RESUMEN

RNA is a key player in the process of gene expression. Whereas fluorescence in situ hybridization allows single mRNA imaging in fixed cells, the MS2-GFP labeling technique enables the observation of mRNA dynamics in living cells. Recently, two genetically engineered mouse models have been developed for the application of the MS2-GFP system in live animals. First, the Actb-MBS mouse was generated by knocking in 24 repeats of the MS2 stem-loop sequence in the 3' untranslated region of the ß-actin gene. Second, the MCP mouse was made to express the NLS-HA-MCP-GFP transgene in all cell types. By crossing Actb-MBS and MCP mice, a double homozygous mouse line, MCP×MBS, was established to visualize endogenous ß-actin mRNA labeled with multiple green fluorescent proteins. By imaging hippocampal neurons or brain slices from MCP×MBS mice, the dynamics of mRNA, such as transcription, transport, and localization, can be studied at single mRNA resolution. In this chapter, we explain the basics of MCP×MBS mice and describe methods for utilizing these animals.


Asunto(s)
Encéfalo/citología , Imagen Molecular/métodos , Neuronas/citología , ARN Mensajero/análisis , Regiones no Traducidas 3' , Actinas/genética , Animales , Encéfalo/metabolismo , Proteínas de la Cápside/genética , Técnicas de Cultivo de Célula/métodos , Supervivencia Celular , Células Cultivadas , Ingeniería Genética , Proteínas Fluorescentes Verdes/genética , Levivirus/genética , Ratones , Microscopía Confocal/métodos , Microtomía/métodos , Neuronas/metabolismo , ARN Mensajero/genética , Coloración y Etiquetado/métodos , Transcripción Genética
16.
Mucosal Immunol ; 9(3): 809-20, 2016 05.
Artículo en Inglés | MEDLINE | ID: mdl-26509876

RESUMEN

Exposure to particulate matter (PM), a major component of air pollution, contributes to increased morbidity and mortality worldwide. PM induces innate immune responses and contributes to allergic sensitization, although the mechanisms governing this process remain unclear. Lung mucosal uric acid has also been linked to allergic sensitization. The links among PM exposure, uric acid, and allergic sensitization remain unexplored. We therefore investigated the mechanisms behind PM-induced allergic sensitization in the context of lung mucosal uric acid. PM10 and house dust mite exposure selectively induced lung mucosal uric acid production and secretion in vivo, which did not occur with other challenges (lipopolysaccharide, virus, bacteria, or inflammatory/fibrotic stimuli). PM10-induced uric acid mediates allergic sensitization and augments antigen-specific T-cell proliferation, which is inhibited by uricase. We then demonstrate that human airway epithelial cells secrete uric acid basally and after stimulation through a previously unidentified mucosal secretion system. Our work discovers a previously unknown mechanism of air pollution-induced, uric acid-mediated, allergic sensitization that may be important in the pathogenesis of asthma.


Asunto(s)
Antígenos Dermatofagoides/inmunología , Hipersensibilidad/inmunología , Pulmón/fisiología , Material Particulado/inmunología , Mucosa Respiratoria/inmunología , Linfocitos T/inmunología , Ácido Úrico/metabolismo , Animales , Proliferación Celular , Células Cultivadas , Exposición a Riesgos Ambientales/efectos adversos , Femenino , Humanos , Inmunidad Mucosa , Inmunización , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Pyroglyphidae , Mucosa Respiratoria/patología , Receptor Toll-Like 4/genética
17.
Euro Surveill ; 20(25): 1-6, 2015 06 25.
Artículo en Inglés | MEDLINE | ID: mdl-26132766

RESUMEN

In this report, we describe 37 MERS-CoV infection cases (1 primary, 25 secondary, 11 tertiary cases) in a single hospital in South Korea. The median incubation period was six days (95% CI: 4­7 days) and the duration between suspected symptom onset and laboratory confirmation was 6.5 days (95% CI: 4­9). While incubation period was two days longer, the duration from suspected symptom onset to confirmation was shorter in tertiary compared with secondary infections.


Asunto(s)
Infecciones por Coronavirus/epidemiología , Coronavirus/genética , Infección Hospitalaria/epidemiología , Brotes de Enfermedades , Personal de Salud/estadística & datos numéricos , Coronavirus del Síndrome Respiratorio de Oriente Medio/aislamiento & purificación , Adulto , Anciano , Trazado de Contacto , Coronavirus/aislamiento & purificación , Infecciones por Coronavirus/diagnóstico , Infección Hospitalaria/diagnóstico , Infección Hospitalaria/transmisión , Infección Hospitalaria/virología , Femenino , Humanos , Incidencia , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Coronavirus del Síndrome Respiratorio de Oriente Medio/genética , Vigilancia de la Población , Reacción en Cadena en Tiempo Real de la Polimerasa , República de Corea/epidemiología
18.
Eur J Cancer Care (Engl) ; 24(4): 493-502, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25651297

RESUMEN

Treatments for breast cancer often include interventions related to psychosocial issues such as negative body image, loss of femininity, and low self-esteem. We identified the psychological effects of a cosmetics education programme in patients with breast cancer. Cosmetic programme is a specific care designed to help patients handle appearance-related side effects. Thirty-one women with breast cancer at a university hospital in South Korea who received a cosmetics education programme were compared with 29 subjects in a control group who received the treatment as usual. Psychological factors including distress, self-esteem, and sexual functioning were assessed three times (before and after the programme, and at the 1-month follow-up). After the programme, patients in the treatment group were significantly less likely than those in the control group to rely on distress (P = 0.038) and avoidance coping (P < 0.001) but not on self-esteem. The mean scores in the treatment group for sexual functioning were higher than those in the control group after the treatment. Our results suggest the potential usefulness of a brief cosmetics education programme for reducing distress and reliance on negative coping strategies. Implementing a cosmetics programme for patients with breast cancer may encourage patients to control negative psychological factors.


Asunto(s)
Neoplasias de la Mama/psicología , Cosméticos/uso terapéutico , Mastectomía/psicología , Educación del Paciente como Asunto/métodos , Adaptación Psicológica , Adulto , Antineoplásicos/uso terapéutico , Ansiedad/etiología , Ansiedad/terapia , Imagen Corporal/psicología , Neoplasias de la Mama/cirugía , Femenino , Humanos , Estudios Prospectivos , República de Corea , Autoeficacia , Estrés Psicológico/etiología , Estrés Psicológico/terapia
19.
Diabet Med ; 32(4): 477-86, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25472691

RESUMEN

AIMS: To evaluate the effects of gestational diabetes and pre-existing diabetes on maternal morbidity and medical costs, using data from the Korea National Health Insurance Claims Database of the Health Insurance Review and Assessment Service. METHODS: Delivery cases in 2010, 2011 and 2012 (459 842, 442 225 and 380 431 deliveries) were extracted from the Health Insurance Review and Assessment Service database. The complications and medical costs were compared among the following three pregnancy groups: normal, gestational diabetes and pre-existing diabetes. RESULTS: Although, the rates of pre-existing diabetes did not fluctuate (2.5, 2.4 and 2.7%) throughout the study, the rate of gestational diabetes steadily increased (4.6, 6.2 and 8.0%). Furthermore, the rates of pre-existing diabetes and gestational diabetes increased in conjunction with maternal age, pre-existing hypertension and cases of multiple pregnancy. The risk of pregnancy-induced hypertension, urinary tract infections, premature delivery, liver disease and chronic renal disease were greater in the gestational diabetes and pre-existing diabetes groups than in the normal group. The risk of venous thromboembolism, antepartum haemorrhage, shoulder dystocia and placenta disorder were greater in the pre-existing diabetes group, but not the gestational diabetes group, compared with the normal group. The medical costs associated with delivery, the costs during pregnancy and the number of in-hospital days for the subjects in the pre-existing diabetes group were the highest among the three groups. CONCLUSIONS: The study showed that the rates of pre-existing diabetes and gestational diabetes increased with maternal age at pregnancy and were associated with increases in medical costs and pregnancy-related complications.


Asunto(s)
Parto Obstétrico/economía , Complicaciones de la Diabetes/economía , Diabetes Gestacional/economía , Embarazo en Diabéticas/economía , Adolescente , Adulto , Parto Obstétrico/estadística & datos numéricos , Complicaciones de la Diabetes/complicaciones , Femenino , Costos de la Atención en Salud , Humanos , Persona de Mediana Edad , Embarazo , Embarazo Múltiple/estadística & datos numéricos , Atención Prenatal/economía , República de Corea , Adulto Joven
20.
Eye (Lond) ; 29(3): 333-41, 2015 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-25376120

RESUMEN

PURPOSE: To determine the morphologic features of the optic disc and the location of visual field (VF) defect in relation to posterior staphyloma in normal tension glaucoma (NTG) eyes with myopia. METHODS: One hundred and thirty-four NTG patients with myopia were enrolled. B-scan ultrasonography was performed in enrolled patients. Disc tilt ratio, disc torsion, and area of peripapillary atrophy were measured from disc photographs. Patients were classified according to the presence of posterior staphyloma and its location: staphyloma involving the optic disc, staphyloma involving either the supero-temporal side of the optic disc or the infero-temporal side of the optic disc. The relationship between the location of the posterior staphyloma and that of the VF defect was analyzed. RESULTS: Among 134 eyes, 74 eyes (55.2%) had posterior staphyloma on B-scan ultrasonography. Mean torsion degree was significantly greater in eyes with staphyloma involving the temporal side of the optic disc (19.78±18.00°) compared with eyes with staphyloma involving the optic disc (4.65±4.92°, P=0.001). The frequency of the location of VF damage differed significantly between eyes with staphyloma involving the supero-temporal side and those involving the infero-temporal side of the optic disc (P=0.008), which was not significant in eyes with staphyloma involving the optic disc (P=0.813). CONCLUSIONS: Optic disc torsion was a prominent finding in myopic NTG eyes when posterior staphyloma was located temporal to the optic disc. The location of posterior staphyloma was related to the direction of disc torsion and the location of VF defect.


Asunto(s)
Glaucoma de Baja Tensión/diagnóstico , Miopía/diagnóstico , Disco Óptico/patología , Enfermedades del Nervio Óptico/diagnóstico , Anomalía Torsional/diagnóstico , Trastornos de la Visión/diagnóstico , Campos Visuales , Adulto , Dilatación Patológica , Femenino , Gonioscopía , Humanos , Presión Intraocular , Masculino , Persona de Mediana Edad , Enfermedades de la Esclerótica/diagnóstico , Tomografía de Coherencia Óptica
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