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1.
Sensors (Basel) ; 21(15)2021 Jul 25.
Artículo en Inglés | MEDLINE | ID: mdl-34372276

RESUMEN

In this study, we present a framework for product quality inspection based on deep learning techniques. First, we categorize several deep learning models that can be applied to product inspection systems. In addition, we explain the steps for building a deep-learning-based inspection system in detail. Second, we address connection schemes that efficiently link deep learning models to product inspection systems. Finally, we propose an effective method that can maintain and enhance a product inspection system according to improvement goals of the existing product inspection systems. The proposed system is observed to possess good system maintenance and stability owing to the proposed methods. All the proposed methods are integrated into a unified framework and we provide detailed explanations of each proposed method. In order to verify the effectiveness of the proposed system, we compare and analyze the performance of the methods in various test scenarios. We expect that our study will provide useful guidelines to readers who desire to implement deep-learning-based systems for product inspection.


Asunto(s)
Seguridad de Productos para el Consumidor , Aprendizaje Profundo
2.
Proc Natl Acad Sci U S A ; 114(47): 12620-12625, 2017 11 21.
Artículo en Inglés | MEDLINE | ID: mdl-29118142

RESUMEN

In our digital and connected societies, the development of social networks, online shopping, and reputation systems raises the questions of how individuals use social information and how it affects their decisions. We report experiments performed in France and Japan, in which subjects could update their estimates after having received information from other subjects. We measure and model the impact of this social information at individual and collective scales. We observe and justify that, when individuals have little prior knowledge about a quantity, the distribution of the logarithm of their estimates is close to a Cauchy distribution. We find that social influence helps the group improve its properly defined collective accuracy. We quantify the improvement of the group estimation when additional controlled and reliable information is provided, unbeknownst to the subjects. We show that subjects' sensitivity to social influence permits us to define five robust behavioral traits and increases with the difference between personal and group estimates. We then use our data to build and calibrate a model of collective estimation to analyze the impact on the group performance of the quantity and quality of information received by individuals. The model quantitatively reproduces the distributions of estimates and the improvement of collective performance and accuracy observed in our experiments. Finally, our model predicts that providing a moderate amount of incorrect information to individuals can counterbalance the human cognitive bias to systematically underestimate quantities and thereby improve collective performance.


Asunto(s)
Toma de Decisiones , Procesos de Grupo , Modelos Estadísticos , Red Social , Francia , Humanos , Japón , Conocimiento
3.
Molecules ; 25(8)2020 Apr 17.
Artículo en Inglés | MEDLINE | ID: mdl-32316426

RESUMEN

Ginkgo biloba leaf (GBL) is known as a potential source of bioactive flavonoids, such as quercetin, arresting the neuronal soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE)-zippering. Here, the GBL flavonoids were isolated in two different manners and then examined for their bioactivity, physicochemical stability, and biocompatibility. The majority of flavonoids in the non-hydrolyzed and acidolyzed isolates, termed non-hydrolyzed isolate (NI) and acidolyzed isolate (AI) hereafter, were rich in flavonol glycosides and aglycones, respectively. Glycosidic/aglyconic quercetin and kaempferol were abundant in both NI and AI, whereas a little of apigenin, luteolin, and isorhamnetin were found in AI. NI was more thermostable in all pH ranges than quercetin, kaempferol, and AI. NI and AI both inhibited neurotransmitter release from differentiated neuronal PC-12 cells. NI and AI showed 1/2-1/3 lower EC50/CC50 values than quercetin and kaempferol. The NI and AI exhibited no toxicity assessed by the tests on chorioallantoic membranes of hen's eggs, removing toxicological concerns of irritation potential. Moreover, GBL isolates, particularly AI, showed antioxidant and anti-inflammatory activities in the use below the CC50 levels. Taken together, these results suggest that GBL isolates that are rich in antioxidant flavonoids are effective anti-neuroexocytotic agents with high stability and low toxicity.


Asunto(s)
Exocitosis/efectos de los fármacos , Flavonoides/química , Flavonoides/farmacología , Ginkgo biloba/química , Neuronas/efectos de los fármacos , Extractos Vegetales/química , Extractos Vegetales/farmacología , Hojas de la Planta/química , Animales , Antiinflamatorios/química , Antiinflamatorios/farmacología , Antioxidantes/química , Antioxidantes/farmacología , Supervivencia Celular , Cromatografía Líquida de Alta Presión , Flavonoides/aislamiento & purificación , Concentración de Iones de Hidrógeno , Ratones , Extractos Vegetales/aislamiento & purificación , Relación Estructura-Actividad , Transmisión Sináptica/efectos de los fármacos , Espectrometría de Masas en Tándem
4.
Anal Biochem ; 582: 113358, 2019 10 01.
Artículo en Inglés | MEDLINE | ID: mdl-31278898

RESUMEN

2'-Fucosyllactose (2'-FL) is the most abundant milk oligosaccharide in human breast milk and it has several benefits for infant health. The quantification of 2'-FL in breast milk or in samples from other sources generally requires lengthy analyses. These methods cannot be used to simultaneously detect 2'-FL in numerous samples, which would be more time-efficient. In this study, two genes, namely α1,2-fucosidase from Xanthomonas manihotis and l-fucose dehydrogenase from Pseudomonas sp. no. 1143, were identified, cloned and overexpressed in E. coli. The recombinant enzymes were produced as 6 × His-tagged proteins and were purified to homogeneity using Ni2+ affinity chromatography. The purified α1,2-fucosidase and l-fucose dehydrogenase are monomers with molecular masses of 63 kDa and 36 kDa, respectively. Both enzymes have sufficiently high activities in phosphate-buffered saline (pH 7.0) at 37 °C, making it possible to develop a coupled enzyme reaction in a single buffer system for the quantitative determination of 2'-FL in a large number of samples simultaneously. This method can be used to quantify 2'-FL in infant formulas and in samples collected from different phases of the biotechnological production of this oligosaccharide. Furthermore, the method is applicable for the rapid screening of active variants during the development of microbial strains producing 2'-FL.


Asunto(s)
Pruebas de Enzimas , Fórmulas Infantiles/química , Leche Humana/química , Trisacáridos/análisis , Deshidrogenasas de Carbohidratos/química , Humanos , Lactante , Recién Nacido , Pseudomonas/metabolismo , Xanthomonas axonopodis/metabolismo , alfa-L-Fucosidasa/química
5.
Acta Radiol ; 57(12): 1483-1489, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-26868169

RESUMEN

Background There are no previous reports regarding the computed tomography (CT) findings of subpleural pulmonary interstitial emphysema (PIE) in patients with spontaneous pneumomediastinum. Purpose To evaluate CT findings of subpleural PIE that may indicate a direct site of terminal alveolar rupture. Material and Methods We retrospectively evaluated chest CT and the medical records of 34 patients with spontaneous pneumomediastinum. Subpleural PIE was defined as the presence of an interstitial air collection in the subpleural portion of the lungs excluding the bronchovascular bundle. Results Subpleural PIE on CT was identified in six of 34 patients (17.6%) with spontaneous pneumomediastinum. In four of these (66.7%), subpleural PIE was present in multiple lobes suggesting multiple simultaneous ruptures of terminal alveoli. The shape of subpleural PIE was elongated linear (4/6), branching and linear (1/6), and elliptical (1/6). Conclusion The presence of subpleural PIE on CT suggests an origin of pneumomediastinal air from alveolar rupture.


Asunto(s)
Enfisema Mediastínico/diagnóstico por imagen , Alveolos Pulmonares/diagnóstico por imagen , Enfisema Pulmonar/diagnóstico por imagen , Tomografía Computarizada por Rayos X/métodos , Adolescente , Adulto , Humanos , Masculino , Enfisema Mediastínico/complicaciones , Enfisema Pulmonar/complicaciones , Estudios Retrospectivos , Rotura Espontánea , Adulto Joven
6.
Nat Commun ; 15(1): 2977, 2024 Apr 06.
Artículo en Inglés | MEDLINE | ID: mdl-38582788

RESUMEN

In blue phosphorescent dopants, the tetradentate platinum(II) complex is a promising material showing high efficiency and stability in devices. However, metal-metal-to-ligand charge transfer (MMLCT) formation leads to low photo-luminescence quantum yields (PLQYs), wide spectra, and intermolecular interaction. To suppress MMLCT, PtON-tb-TTB and PtON-tb-DTB are designed using theoretical simulation by modifying t-butyl in PtON-TBBI. Both materials effectively suppress MMLCT and exhibit high PLQYs of 99% and 78% in 5 wt% doped film, respectively. The PtON-tb-TTB and PtON-tb-DTB devices have maximum external quantum efficiencies of 26.3% and 20.9%, respectively. Additionally, the PtON-tb-DTB device has an extended lifetime of 169.3 h with an initial luminescence of 1200 nit, which is 8.5 times greater than the PtON-TBBI device. Extended lifetime because of suppressed MMLCT and smaller displacement between the lowest triplet and triplet metal-centered states compared to other dopants. The study provides an effective approach to designing platinum(II) complexes for long device lifetimes.

7.
Radiology ; 268(3): 802-13, 2013 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-23533289

RESUMEN

PURPOSE: To compare diagnostic performance, subjective image quality, and artifacts of isotropic three-dimensional (3D) intermediate-weighted (IW) fast spin-echo (SE), isotropic 3D balanced fast field-echo (FFE), and conventional two-dimensional (2D) fast SE 3.0-T MR sequences in evaluation of cartilage, ligaments, menisci, and osseous knee structures in symptomatic patients. MATERIALS AND METHODS: Institutional review board approval and waiver of informed consent were obtained for this HIPAA-compliant study. One hundred MR studies, each with three data sets (3D IW fast SE, 3D balanced FFE, 2D fast SE), were reviewed retrospectively. Two radiologists independently evaluated images for cartilaginous defects, anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial meniscus (MM), lateral meniscus (LM) tears, subchondral bone marrow signal abnormalities, subjective image quality, and image artifacts. Arthroscopic results were the reference standard. Statistical analysis was performed to calculate interobserver agreement and compare diagnostic performance of sequences. RESULTS: Sensitivity and specificity were greater than 85% for all lesions. For cartilaginous defects, sensitivity of 3D IW fast SE was significantly greater than that of 3D balanced FFE (95.5% vs 89.7%). Sensitivity of 3D IW fast SE and 2D fast SE for MM, LM, and ACL tears tended to be greater than that of 3D balanced FFE. IW fast SE had a higher detection rate for subchondral bone marrow signal abnormality than did 3D balanced FFE (34% vs 21%); it also had the best image quality and fewest artifacts, followed by 2D fast SE and 3D balanced FFE. Interobserver agreement was excellent for evaluation of all intraarticular structures (κ = 0.85-1) and good to excellent for detection of subchondral bone marrow signal abnormality (κ = 0.76-0.91). CONCLUSION: The performance of IW fast SE is superior to that of balanced FFE in evaluation of cartilaginous defects, with no significant difference in performance between 2D fast SE, 3D IW fast SE, and 3D balanced FFE in evaluation of meniscal and ligament tears. Subchondral bone marrow signal abnormality is more easily seen on 3D IW fast SE images, with better subjective image quality and fewer artifacts, than on images obtained with other techniques.


Asunto(s)
Algoritmos , Imagen Eco-Planar/métodos , Interpretación de Imagen Asistida por Computador/métodos , Imagenología Tridimensional/métodos , Traumatismos de la Rodilla/patología , Traumatismos de la Rodilla/cirugía , Adolescente , Adulto , Anciano , Femenino , Humanos , Aumento de la Imagen/métodos , Masculino , Persona de Mediana Edad , Variaciones Dependientes del Observador , Reproducibilidad de los Resultados , Sensibilidad y Especificidad , Marcadores de Spin , Resultado del Tratamiento , Adulto Joven
8.
Sci Rep ; 13(1): 3441, 2023 03 01.
Artículo en Inglés | MEDLINE | ID: mdl-36859435

RESUMEN

Hyperoxia is frequently used for treating acute respiratory failure, but it can cause acute lung injury. Nucleotide-binding domain and leucine-rich-repeat-containing family member X1 (NLRX1) is localized in mitochondria and involved in production of reactive oxygen species, inflammation, and apoptosis, which are the features of hyperoxic acute lung injury (HALI). The contribution of NLRX1 to HALI has not previously been addressed. Thus, to investigate the role of NLRX1 in hyperoxia, we generated a murine model of HALI in wild-type (WT) and NLRX1-/- mice by exposure to > 95% oxygen for 72 h. As a result, NLRX1 expression was elevated in mice exposed to hyperoxia. In acute lung injury, levels of inflammatory cells, protein leakage, cell cytotoxicity, and pro-inflammatory cytokines were diminished in NLRX1-/- mice compared to WT mice. In a survival test, NLRX1-/- mice showed reduced mortality under hyperoxic conditions, and apoptotic cell death and caspase expression and activity were also lower in NLRX1-/- mice. Furthermore, levels of the MAPK signaling proteins ERK 1/2, JNK, and p38 were decreased in NLRX1-deficient mice than in WT mice exposed to hyperoxia. The study shows that a genetic deficit in NLRX1 can suppress hyperoxia-induced apoptosis, suggesting that NLRX1 acts as a pivotal regulator of HALI.


Asunto(s)
Lesión Pulmonar Aguda , Hiperoxia , Animales , Ratones , Apoptosis , Muerte Celular , Transducción de Señal , Proteínas Mitocondriales
9.
J Clin Ultrasound ; 40(2): 109-11, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-21812001

RESUMEN

Chondromyxoid fibroma is a rare benign bone tumor, which represents less than 1% of primary bone tumors. However, chondromyxoid fibroma developing in the soft tissue is extremely rare. We report the sonographic findings in a case of soft tissue chondromyxoid fibroma in the foot confirmed pathologically.


Asunto(s)
Condroma/diagnóstico por imagen , Fibroma/diagnóstico por imagen , Pie , Neoplasias de los Tejidos Blandos/diagnóstico por imagen , Ultrasonografía Doppler en Color , Condroma/patología , Condroma/cirugía , Diagnóstico Diferencial , Femenino , Fibroma/patología , Fibroma/cirugía , Humanos , Persona de Mediana Edad , Neoplasias de los Tejidos Blandos/patología , Neoplasias de los Tejidos Blandos/cirugía
10.
Sci Rep ; 12(1): 4980, 2022 03 23.
Artículo en Inglés | MEDLINE | ID: mdl-35322139

RESUMEN

Recombinant peptides were designed using the C-terminal domain (receptor binding domain, RBD) and its subdomain (peptide A2) of a heavy chain of botulinum neurotoxin A-type 1 (BoNT/A1), which can bind to the luminal domain of synaptic vesicle glycoprotein 2C (SV2C-LD). Peptide A2- or RBD-containing recombinant peptides linked to an enhanced green fluorescence protein (EGFP) were prepared by expression in Escherichia coli. A pull-down assay using SV2C-LD-covered resins showed that the recombinant peptides for CDC297 BoNT/A1, referred to EGFP-A2' and EGFP-RBD', exhibited ≥ 2.0-times stronger binding affinity to SV2C-LD than those for the wild-type BoNT/A1. Using bio-layer interferometry, an equilibrium dissociation rate constant (KD) of EGFP-RBD' to SV2C-LD was determined to be 5.45 µM, which is 33.87- and 15.67-times smaller than the KD values for EGFP and EGFP-A2', respectively. Based on confocal laser fluorescence micrometric analysis, the adsorption/absorption of EGFP-RBD' to/in differentiated PC-12 cells was 2.49- and 1.29-times faster than those of EGFP and EGFP-A2', respectively. Consequently, the recombinant peptides acquired reasonable neuron-specific binding/internalizing ability through the recruitment of RBD'. In conclusion, RBDs of BoNTs are versatile protein domains that can be used to mark neural systems and treat a range of disorders in neural systems.


Asunto(s)
Toxinas Botulínicas Tipo A , Clostridium botulinum , Toxinas Botulínicas Tipo A/química , Clostridium botulinum/metabolismo , Glicoproteínas de Membrana/metabolismo , Neuronas/metabolismo , Péptidos/metabolismo , Unión Proteica , Proteínas Recombinantes/metabolismo
11.
Allergy Asthma Immunol Res ; 14(4): 424-438, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35837825

RESUMEN

PURPOSE: The prevalence of food allergy, triggered by T-helper type 2 (Th2) cell-mediated inflammation, is increasing worldwide. Interleukin (IL)-18 plays an important role in inflammatory diseases by binding with the IL-18 receptor. IL-18/IL-18 receptor α (IL-18Rα) is a cofactor for immunoglobulin E (IgE) production and Th2 cell development. Studies have not investigated the association between the IL-18/IL-18Rα signaling pathway and food allergy. Here, we investigated the role of IL-18Rα in food allergy induction and development. METHODS: Wild-type (WT) and IL-18Rα-null mutant (IL-18Rα-/-) C57BL/6 mice were sensitized and challenged using ovalbumin (OVA) for food allergy induction. Food allergy symptoms, T cell-mediated immune responses, and signal transducer and activator of transcription (STAT)/suppressors of cytokine signaling (SOCS) pathways were analyzed in mice. RESULTS: IL-18Rα expression was increased in WT mouse intestines after OVA treatment. Food allergy-induced IL-18Rα-/- mice showed attenuated systemic food allergic reactions, OVA-specific IgE and mouse mast cell protease-1 production, inflammatory cell infiltration, and T cell activation. Ex vivo experiments showed that cell proliferation and Th2 cytokine production were lower in IL-18Rα-/- mouse splenocytes than in WT mouse splenocytes. IL-18Rα blockade in WT splenocytes attenuated cell proliferation and Th2 cytokine production. Moreover, STAT3 phosphorylation was reduced in IL-18Rα-/- mice, and SOCS3 and SOCS1 activation were diminished in IL-18Rα-/- intestinal T cells. CONCLUSIONS: IL-18Rα regulates allergic reactions and immune responses by regulating T cell responses in food allergies. Moreover, IL-18Rα is involved in the STAT/SOCS signaling pathways. Targeting IL-18Rα signaling might be a novel therapeutic strategy for food allergy.

12.
Bioengineering (Basel) ; 9(9)2022 Sep 13.
Artículo en Inglés | MEDLINE | ID: mdl-36135012

RESUMEN

This study aimed to examine the differences in healing patterns using two types of diode laser devices (laser A and laser B) and a steel scalpel for periodontal surgery through histological and immunohistochemical methods. Twenty 12-week-old male rats were assigned to three groups (3, 7, and 14 days). Square-shaped erosion wounds (2 × 2 mm2 diameter) were created on the hard palate of each rat. Two wounds were created using Laser A and a steel scalpel (Bard-Parker No. 15) on the right palate and using Laser B and a steel scalpel on the left side. Rats were sacrificed after 3, 7, and 14 days. Tissues were collected with a margin of 1 mm from the border of the erosional wound of the maxillary hard palate. Histological and immunohistochemical analyses were performed on the tissue samples after 3, 7, and 14 days. The tissue healing pattern and expression of inducible nitric oxide synthase (iNOS) and cluster of differentiation (CD) were observed under a light microscope. Statistical analysis was conducted using the Kruskal−Wallis H test for comparison among the groups (α = 0.05). In comparison to the wounds made with the scalpel, wounds treated with lasers A and B showed delayed healing patterns. There was no significant difference between the two laser treatment groups (p > 0.05). The expression of iNOS and CD68 was not significantly different among the three groups after 3 and 7 days (p > 0.05). On day 14, the groups treated with the dental diode lasers showed higher expression than the group treated with the steel scalpel, but no significant difference was observed (p > 0.05). Laser-induced wounds tended to heal slower than surgical wounds performed using a steel scalpel, but histological and immunohistochemical results showed no significant difference between the dental diode laser and scalpel groups.

13.
J Clin Rheumatol ; 17(7): 365-7, 2011 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-21946461

RESUMEN

Intervertebral disk calcification in children is an uncommon self-limiting disease, which can cause symptoms like neck pain or torticollis, and can be treated with conservative management. The calcified disk material can herniate anteriorly, inducing dysphagia, or herniate posteriorly, causing neurologic symptoms secondary to spinal cord compression. We report computed tomography and magnetic resonance findings of a symptomatic intervertebral disk calcification at the C2-3 level with retropharyngeal edema caused by anterior herniation of calcified material in a 7-year-old boy.


Asunto(s)
Calcinosis/diagnóstico , Edema/diagnóstico , Desplazamiento del Disco Intervertebral/diagnóstico , Enfermedades Faríngeas/diagnóstico , Infecciones del Sistema Respiratorio/complicaciones , Enfermedades de la Columna Vertebral/diagnóstico , Antibacterianos/uso terapéutico , Antiinflamatorios/uso terapéutico , Reposo en Cama , Calcinosis/terapia , Vértebras Cervicales , Niño , Edema/terapia , Estudios de Seguimiento , Humanos , Desplazamiento del Disco Intervertebral/terapia , Imagen por Resonancia Magnética , Masculino , Enfermedades Faríngeas/terapia , Tomografía Computarizada por Rayos X , Tracción , Rayos X
14.
Cells ; 10(4)2021 04 19.
Artículo en Inglés | MEDLINE | ID: mdl-33921872

RESUMEN

Exposure to high oxygen concentrations leads to generation of excessive reactive oxygen species, causing cellular injury and multiple organ dysfunctions and is associated with a high mortality rate. Clusterin (CLU) is a heterodimeric glycoprotein that mediates several intracellular signaling pathways, including cell death and inflammation. However, the role of CLU in the pathogenesis of hyperoxic acute lung injury (HALI) is unknown. Wild-type (WT) and CLU-deficient mice and cultured human airway epithelial cells were used. Changes in cell death- and inflammation-related molecules with or without hyperoxia exposure in cells and animals were determined. Hyperoxia induced an increase in CLU expression in mouse lungs and human airway epithelial cells. Mice lacking CLU had increased HALI and mortality rate compared with WT mice. In vitro, CLU-disrupted cells showed enhanced release of cytochrome c, Bax translocation, cell death and inflammatory cytokine expression. However, treatment with recombinant CLU attenuated hyperoxia-induced apoptosis. Moreover, the Kyoto Encyclopedia of Genes and Genomes and Gene Ontology analyses revealed metabolic pathways, hematopoietic cell lineage, response to stress and localization and regulation of immune system that were differentially regulated between WT and CLU-/- mice. These results demonstrate that prolonged hyperoxia-induced lung injury is associated with CLU expression and that CLU replenishment may alleviate hyperoxia-induced cell death.


Asunto(s)
Lesión Pulmonar Aguda/etiología , Clusterina/deficiencia , Hiperoxia/complicaciones , Lesión Pulmonar Aguda/genética , Lesión Pulmonar Aguda/patología , Lesión Pulmonar Aguda/prevención & control , Animales , Apoptosis , Clusterina/metabolismo , Citocromos c/metabolismo , Células Epiteliales/metabolismo , Células Epiteliales/patología , Perfilación de la Expresión Génica , Regulación de la Expresión Génica , Humanos , Inflamación/patología , Pulmón/metabolismo , Pulmón/patología , Masculino , Potencial de la Membrana Mitocondrial , Ratones Endogámicos C57BL , Ratones Noqueados , Análisis por Micromatrices , ARN Mensajero/genética , ARN Mensajero/metabolismo , Proteína X Asociada a bcl-2/metabolismo
15.
Imaging Sci Dent ; 50(3): 237-243, 2020 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-33005581

RESUMEN

PURPOSE: The aim of this study was to evaluate the clinical efficacy of a Tanner-Whitehouse 3 (TW3)-based fully automated bone age assessment system on hand-wrist radiographs of Korean children and adolescents. MATERIALS AND METHODS: Hand-wrist radiographs of 80 subjects (40 boys and 40 girls, 7-15 years of age) were collected. The clinical efficacy was evaluated by comparing the bone ages that were determined using the system with those from the reference standard produced by 2 oral and maxillofacial radiologists. Comparisons were conducted using the paired t-test and simple regression analysis. RESULTS: The bone ages estimated with this bone age assessment system were not significantly different from those obtained with the reference standard (P>0.05) and satisfied the equivalence criterion of 0.6 years within the 95% confidence interval (- 0.07 to 0.22), demonstrating excellent performance of the system. Similarly, in the comparisons of gender subgroups, no significant difference in bone age between the values produced by the system and the reference standard was observed (P>0.05 for both boys and girls). The determination coefficients obtained via regression analysis were 0.962, 0.945, and 0.952 for boys, girls, and overall, respectively (P=0.000); hence, the radiologist-determined bone ages and the system-determined bone ages were strongly correlated. CONCLUSION: This TW3-based system can be effectively used for bone age assessment based on hand-wrist radiographs of Korean children and adolescents.

16.
Sci Rep ; 10(1): 13132, 2020 08 04.
Artículo en Inglés | MEDLINE | ID: mdl-32753614

RESUMEN

Myricetin-a flavonoid capable of inhibiting the SNARE complex formation in neurons-reduces focal sweating after skin-application when delivers as encapsulated in lipid nanoparticles (M-LNPs). The stability of M-LNP enables efficient delivery of myricetin to sudomotor nerves located underneath sweat glands through transappendageal pathways while free myricetin just remained on the skin. Furthermore, release of myricetin from M-LNP is accelerated through lipase-/esterase-induced lipolysis in the skin-appendages, enabling uptake of myricetin by the surrounding cells. The amount of sweat is reduced by 55% after application of M-LNP (0.8 mg kg-1) on the mouse footpad. This is comparable to that of subcutaneously injected anticholinergic agents [0.25 mg kg-1 glycopyrrolate; 0.8 U kg-1 botulinum neurotoxin-A-type (BoNT/A)]. M-LNP neither shows a distal effect after skin-application nor induced cellular/ocular toxicity. In conclusion, M-LNP is an efficient skin-applicable antiperspirant. SNARE-inhibitory small molecules with suitable delivery systems have the potential to replace many BoNT/A interventions for which self-applications are preferred.


Asunto(s)
Portadores de Fármacos , Flavonoides , Lípidos , Nanopartículas/química , Sudoración/efectos de los fármacos , Animales , Toxinas Botulínicas Tipo A/química , Toxinas Botulínicas Tipo A/farmacología , Portadores de Fármacos/química , Portadores de Fármacos/farmacología , Flavonoides/química , Flavonoides/farmacología , Lípidos/química , Lípidos/farmacología , Masculino , Ratones , Ratones Endogámicos ICR
17.
Acta Radiol Open ; 7(6): 2058460118774957, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-29872548

RESUMEN

BACKGROUND: There is little research done on non-mass cancers (NMCs) on breast ultrasound (US). PURPOSE: To evaluate large-sectional histopathology findings of NMCs on breast US. MATERIAL AND METHODS: The mammographic and histopathology features of biopsy proven 36 breast cancers which showed pure non-mass lesions on US were retrospectively reviewed. RESULTS: The most common mammographic finding was microcalcification (23/35, 65.7%); fine pleomorphic microcalcification was predominant (18/23, 78.3%). The main tumor type was pure ductal carcinoma in situ (DCIS) (14/36, 38.9%) and DCIS with micro- or minimal invasion (11/36, 30.6%). Among the 25 DCIS, histologic grade was high in 15 (60.0%) and intermediate in nine (36%); comedo necrosis was seen in 17 (68%). Immunohistochemical analysis was available in 27 lesions and showed HER2-overexpression in 12 (44.4%) and triple-negative in two (7.4%). CONCLUSION: According to our limited patient sample, NMCs on breast US were mainly associated with high-grade DCIS.

18.
Anticancer Res ; 38(4): 2455-2462, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29599377

RESUMEN

BACKGROUND/AIM: To evaluate the usefulness and safety of vacuum-assisted breast biopsy (VABB) for breast lesion diagnosis and treatment. PATIENTS AND METHODS: Clinical and histopathological data of 8,748 patients, who underwent 11,221 VABB procedures were analyzed. RESULTS: Most patients (58.2%) were <40 years old. Most lesions (39.6%) were 0.6-1.0 cm in diameter while 3.2% were ≥3.0 cm; fibroadenomas were the most common (46.6%). Eight (14% of 57) cases of atypical ductal hyperplasia were underestimated. The positive predictive values (PPVs) of breast imaging reporting and data system (BI-RADS) ultrasound category were 0.6%, 3.4%, 34.8%, 66.2%, and 93.8% for category 3, 4a, 4b, 4c, and 5 lesions, respectively. The mean number of core specimens was 9.5±8.8; the mean procedure time was 3.4±2.7 min. No residual lesions were found in 94.4% of the 7,480 patients. CONCLUSION: VABB could replace ultrasound-guided core biopsy and surgical excisional biopsy for the diagnosis of breast disease and the treatment of benign breast lesions.


Asunto(s)
Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/terapia , Mama/patología , Biopsia Guiada por Imagen/métodos , Ultrasonografía Intervencional/métodos , Adolescente , Adulto , Anciano , Anciano de 80 o más Años , Biopsia con Aguja/efectos adversos , Biopsia con Aguja/métodos , Biopsia con Aguja/estadística & datos numéricos , Mama/diagnóstico por imagen , Neoplasias de la Mama/epidemiología , Neoplasias de la Mama/patología , Niño , Femenino , Humanos , Biopsia Guiada por Imagen/efectos adversos , Biopsia Guiada por Imagen/estadística & datos numéricos , Persona de Mediana Edad , Estudios Retrospectivos , Ultrasonografía Intervencional/efectos adversos , Ultrasonografía Intervencional/estadística & datos numéricos , Vacio , Adulto Joven
19.
Anticancer Res ; 38(9): 5481-5487, 2018 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-30194206

RESUMEN

BACKGROUND/AIM: Recently, the development of ultrasonography (US)-guided vacuum-assisted breast biopsy (VABB) has enabled the excision of benign breast tumors with normal surrounding breast tissues; thus, complete excision is possible without residual tumor tissue. We sought to identify the clinicopathological characteristics and recurrence rates of benign phyllodes tumors diagnosed by US-guided VABB. PATIENTS AND METHODS: Data from 11,221 US-guided VABBs performed at the Gangnam Cha Medical Center over 12 years were analyzed. Eighty-three lesions were diagnosed as benign phyllodes tumors; 67 with >24 months of follow-up data were investigated. All lesions were excised using an 8-gauge probe without residual tissue; patients underwent follow-up US every 3-6 months. RESULTS: Five patients (7.46%) experienced local recurrence during a mean follow-up period of 27.8 months; no distant metastases occurred. The mean tumor size was 3.0 cm in the recurrence group and 1.87 cm in the non-recurrence group (p=0.05). CONCLUSION: Benign phyllodes tumors excised and diagnosed using VABB showed a low recurrence rate during the follow-up period; thus, these tumors, particularly those <3 cm, can be safely monitored with ultrasonography instead of performing immediate re-excision.


Asunto(s)
Neoplasias de la Mama/patología , Neoplasias de la Mama/cirugía , Biopsia Guiada por Imagen/métodos , Recurrencia Local de Neoplasia , Tumor Filoide/patología , Tumor Filoide/cirugía , Ultrasonografía Intervencional , Adolescente , Adulto , Niño , Femenino , Humanos , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Estudios Retrospectivos , Factores de Riesgo , Seúl , Factores de Tiempo , Resultado del Tratamiento , Carga Tumoral , Vacio , Adulto Joven
20.
Clin Imaging ; 43: 188-193, 2017.
Artículo en Inglés | MEDLINE | ID: mdl-28363119

RESUMEN

OBJECTIVE: To evaluate the diagnostic accuracy of chest CT findings to diagnose Grave's disease in pulmonary hypertension. METHODS: We retrospectively evaluated chest CT and the medical records of 13 patients with Grave's disease with (n=6) or without pulmonary hypertension (n=7) and in 17 control patients. RESULTS: Presence of iso-attenuation of diffusely enlarged thyroid glands compared with adjacent neck muscle on non-enhanced CT as a diagnostic clue of Grave's disease, and assessment of pulmonary hypertension on CT has high diagnostic accuracy. CONCLUSION: Chest CT has the potential to diagnose Grave's disease with pulmonary hypertension in the absence of other information.


Asunto(s)
Enfermedad de Graves/diagnóstico , Hipertensión Pulmonar/etiología , Tórax/diagnóstico por imagen , Glándula Tiroides/patología , Tomografía Computarizada por Rayos X/métodos , Adulto , Anciano , Estudios de Casos y Controles , Femenino , Enfermedad de Graves/complicaciones , Enfermedad de Graves/diagnóstico por imagen , Enfermedad de Graves/patología , Humanos , Hipertensión Pulmonar/diagnóstico por imagen , Masculino , Persona de Mediana Edad , Reproducibilidad de los Resultados , Estudios Retrospectivos , Glándula Tiroides/diagnóstico por imagen
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