Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 15 de 15
Filtrar
Más filtros











Base de datos
Intervalo de año de publicación
1.
SSM Qual Res Health ; : 100291, 2023 Jun 10.
Artículo en Inglés | MEDLINE | ID: mdl-37361642

RESUMEN

This paper aims to further understanding of discourses of responsible bio-political citizenship during the first year of the Covid-19 pandemic. This was an interview-based qualitative study comparing experiences of 103 people who were ill with Covid for the first time across 2020 in Japan, Germany, the USA and the UK. Comparative thematic analysis explored discussion of responsibility in relation to Covid illness, experiences of social fracture and stigma, and the strategies employed to resist or mitigate stigma. This comparative analysis highlighted significant similarities across countries. We identified three mysteries of Covid illness experiences that impacted the work of navigating biopolitical citizenship. First, the mystery of how people caught Covid. There was an inherent paradox of following guidance yet nonetheless falling ill. Disclosure of Covid to minimise onward transmission was held in tension with accusations of irresponsibility. Second, the mystery of onward transmission. Uncertainty about transmission placed participants in a liminal space of potentially having caused harm to others. Third, the mystery of how long illness should last. Uncertainty about ongoing infectiousness made social re-entry difficult, particularly in instances of persistent symptoms. We demonstrate the instability of certainty in the context of new and emerging forms of biopolitical citizenship. Guidance and emerging scientific evidence sought to demystify Covid through providing certainty that could guide responsible actions, but where citizens experienced paradoxes this had the potential to exacerbate stigma.

2.
Asia Pac J Oncol Nurs ; 9(9): 100075, 2022 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-35669286

RESUMEN

Objective: This study aimed to identify the awareness, knowledge, and assessment of cancer cachexia among nurses who cared for patients with advanced cancer undergoing chemotherapy. In addition, we identified the factors that affected their assessments. Methods: A cross-sectional survey was conducted among nurses who cared for patients with advanced cancer undergoing chemotherapy at designated cancer care hospitals and regional cancer care cooperation hospitals between June and September 2020. We applied Bandura's triadic reciprocal causation as the research framework. The questionnaire consisted of questions on awareness, knowledge, and assessment of cancer cachexia. Single and multiple regression analyses were conducted on the relationship between each variable and the number of assessment items. Results: Questionnaires were sent to 1026 nurses, 403 of whom responded (response rate: 39.3%). Among these, 299 responses were valid, being a 74.1% valid response rate. The average age was 39.74 â€‹± â€‹9.65 years and the mean work experience as a nurse was 16.50 â€‹± â€‹9.14 years. In respect of the awareness of cancer cachexia, 93.3% of the participants answered "assessment of cancer cachexia was needed," and 75.2% answered "a nurse's role includes assessing for cancer cachexia." Only 15.4% responded positively regarding "confidence in the assessment of cancer cachexia." Regarding knowledge of cancer cachexia, the percentage of correct answers to questions about the definition of cachexia and diagnostic criteria ranged from 45.5% to 53.8%. With regard to cancer cachexia assessments, the participants assessed "weight loss or rate of weight loss (56.9%)," "symptoms affecting nutritional status (54.2%)," and "anorexia (46.2%)." Factors affecting the assessment of cancer cachexia were higher knowledge scores on cancer cachexia (P â€‹= â€‹0.039), routine assessment of cancer cachexia (P â€‹< â€‹0.001), experiences of participating in in-hospital training on cancer cachexia (P â€‹= â€‹0.027), and collaborating with physical/occupational therapists in the nutritional management of patients (P â€‹= â€‹0.025). Conclusions: Nurses held the view that their role required them to assess for cancer cachexia, but they did not feel confident in doing so. In addition, they lacked knowledge of reversible "cancer cachexia;" hence, the assessments were not routinely completed. Education on these topics and the development and standardization of tools to assess or collaborate with other professions are required.

3.
Asia Pac J Oncol Nurs ; 8(5): 498-507, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34527779

RESUMEN

This scoping review aims to identify the barriers in practice and clinical trials for oncology nurses in cancer cachexia. We used the framework proposed by Arksey and O'Malley and Preferred Reporting Items for Systematic Reviews and Meta-Analyses extension for scoping reviews. Studies written in English and published between 2008 and 2021 were retrieved from five databases: MEDLINE, Cochrane Library, CINAHL, PsycINFO, and EMBASE. A total of 1075 studies were identified, and 34 full-text studies were assessed for eligibility by three researchers. Seventeen studies met the inclusion criteria. This review revealed several barriers to nursing practice and clinical trials in cancer cachexia. First, health-care professionals, including nurses, faced individual barriers (insufficient understanding and skills for diagnosis and management) and environmental barriers (lack of standardized screening tools or treatment options, difficulties in collaboration with other professions, and limited human resources) in practice. Second, studies on nurse-led interventions for cancer cachexia were relatively few and different in objectives, making it challenging to integrate the outcomes. Finally, there were no established educational programs for nurses that explicitly focused on cancer cachexia. This scoping review revealed individual and environmental barriers in nursing practice. In addition, there have relatively few clinical trials involving oncology nurses in cancer cachexia. Continuing education for nurses should cover cancer cachexia to improve the quality of oncology care in the future. It is also necessary to standardize practical assessment tools that are easy to assess daily and lead to interventions and develop nurse-led multidisciplinary care.

4.
Sci Rep ; 11(1): 2616, 2021 01 28.
Artículo en Inglés | MEDLINE | ID: mdl-33510346

RESUMEN

Src-family tyrosine kinases (SFKs) play important roles in a number of signal transduction events during mitosis, such as spindle formation. A relationship has been reported between SFKs and the mitotic spindle; however, the underlying mechanisms remain unclear. We herein demonstrated that SFKs accumulated in the centrosome region at the onset of mitosis. Centrosomal Fyn increased in the G2 phase in a microtubule polymerization-dependent manner. A mass spectrometry analysis using mitotic spindle preparations was performed to identify tyrosine-phosphorylated substrates. Protein regulator of cytokinesis 1 (PRC1) and kinastrin/small kinetochore-associated protein (kinastrin/SKAP) were identified as SFK substrates. SFKs mainly phosphorylated PRC1 at Tyr-464 and kinastrin at Tyr-87. Although wild-type PRC1 is associated with microtubules, phosphomimetic PRC1 impaired the ability to bind microtubules. Phosphomimetic kinastrin at Tyr-87 also impaired binding with microtubules. Collectively, these results suggest that tyrosine phosphorylation of PRC1 and kinastrin plays a role in their delocalization from microtubules during mitosis.


Asunto(s)
Proteínas de Ciclo Celular/metabolismo , Centrosoma/enzimología , Proteínas Asociadas a Microtúbulos/metabolismo , Proteínas Proto-Oncogénicas c-fyn/metabolismo , Huso Acromático/enzimología , Ciclo Celular , Células HeLa , Humanos , Fosforilación
6.
Arch Iran Med ; 21(1): 41-43, 2018 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-29664669

RESUMEN

Primary nonsecretory plasma cell leukemia (PCL) is an extremely rare type of multiple myeloma. Here, we report a case of nonsecretory PCL with no previous history of multiple myeloma. The case exhibited extremely low levels of serum immunoglobulin and light chain, no detectable serum M-protein or free light chain restriction, no urine BJP, and no cytoplasmic light chain expression in flow cytometry. In fluorescence in situ hybridization, tumor cells exhibited fusion genes for IgH/BCL1 and IgH/cMyc, disappearance of the p53 signal, and a split signal for IgK(2p11), but no split signal for IgL (22q11). Therefore, we diagnosed primary nonsecretory PCL with multiple chromosomal abnormalities.


Asunto(s)
Reordenamiento Génico , Leucemia de Células Plasmáticas/genética , Translocación Genética , Anciano , Femenino , Humanos , Cadenas Ligeras de Inmunoglobulina/sangre , Hibridación Fluorescente in Situ , Leucemia de Células Plasmáticas/sangre , Leucemia de Células Plasmáticas/patología , Proteínas de Mieloma/metabolismo
7.
Chronic Illn ; 8(3): 225-36, 2012 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-22609850

RESUMEN

OBJECTIVE: Recently, disclosure of cancer diagnosis is common in Japan, but significant variability in patient preference of prognostic disclosure poses difficult questions for doctors. The aim of this study was to understand the reasons for wanting or not wanting to know life prognosis and how the information was interpreted and utilized by the patients. METHODS: The study was based on narrative interviews with 42 women with breast cancer and 49 men with prostate cancer, in varying stages. A qualitative and interpretive approach was taken, combining thematic analysis with constant comparison. RESULTS: While some of the participants voluntarily asked for prognosis to prepare themselves for the end of life, others were shocked by unexpected and unilateral disclosure. Some obtained prognostic information from books and websites. Some preferred to remain unaware of life prognosis, partly because they feared it would become a self-fulfilling prophecy. DISCUSSION: The major problem underlying the practice of prognostic disclosure is the absence of mutual understanding of how such information will be utilized. These findings affirm that it should be used to empower patients to participate in the decision-making process.


Asunto(s)
Neoplasias de la Mama/psicología , Narración , Relaciones Médico-Paciente , Pronóstico , Revelación de la Verdad , Adulto , Anciano , Anciano de 80 o más Años , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Toma de Decisiones , Femenino , Humanos , Entrevista Psicológica , Japón , Masculino , Salud del Hombre , Persona de Mediana Edad , Investigación Cualitativa , Características de la Residencia , Salud de la Mujer
9.
J Infect Chemother ; 15(5): 274-8, 2009 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-19856063

RESUMEN

It was reported that some methicillin-resistant Staphylococcus aureus (MRSA) show resistance to vancomycin (VCM) and beta-lactam antibiotics; thus, they are termed beta-lactam antibiotic-induced VCM-resistant MRSA (BIVR). The VCM resistance of MRSA is induced by the administration of beta-lactam antibiotics, but this phenomenon can be difficult to detect in the clinical laboratory. We detected the BIVR strain in a 64-year-old man who had had a ventilator tube inserted directly into the windpipe during long-term VCM therapy. The patient was diagnosed with MRSA pneumonia and septicemia on July 5, 2007, and sulbactam/ampicillin (SBT/ABPC) was administered for 5 days. However, the fever recurred, and administration of VCM was resumed for 7 days from July 19. Fever developed again, and VCM was administered again for 14 days from September 30. BIVR and VCM-low-sensitive MRSA were isolated from blood on October 18 and 22, although the VCM trough concentration was 10.2 microg/ml. On October 27, we changed to a combination of fosfomycin (FOM) and arbekacin (ABK), and thereafter the fever quickly decreased and the clinical symptoms abated. We isolated five MRSA strains from the blood of the patient, three strains of VCM-sensitive MRSA, one strain of BIVR, and one strain of a VCM-low-sensitive MRSA. The DNA band patterns determined by pulsed-field gel electrophoresis were completely identical except for the VCM-low-sensitive MRSA, which was missing one band. Furthermore, the VCM-low-sensitive MRSA became sensitive to beta-lactam antibiotics. Our results indicate the possibility that long-term VCM therapy is one of the factors that allow BIVR or VCM-low-sensitive MRSA to emerge, and this allows VCM therapy for MRSA to fail.


Asunto(s)
Antibacterianos/administración & dosificación , Staphylococcus aureus Resistente a Meticilina/efectos de los fármacos , Infecciones Estafilocócicas/microbiología , Resistencia a la Vancomicina , Vancomicina/administración & dosificación , beta-Lactamas/administración & dosificación , Bacteriemia/tratamiento farmacológico , Bacteriemia/microbiología , Dibekacina/análogos & derivados , Dibekacina/uso terapéutico , Quimioterapia Combinada , Fosfomicina/uso terapéutico , Humanos , Masculino , Staphylococcus aureus Resistente a Meticilina/aislamiento & purificación , Pruebas de Sensibilidad Microbiana , Persona de Mediana Edad , Neumonía Bacteriana/tratamiento farmacológico , Neumonía Bacteriana/microbiología , Infecciones Estafilocócicas/tratamiento farmacológico , Factores de Tiempo , Resistencia betalactámica
10.
Anal Chem ; 78(18): 6291-8, 2006 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-16970300

RESUMEN

Iridium-modified, boron-doped diamond electrodes fabricated by an ion implantation method have been developed for electrochemical detection of arsenite (As(III)). Ir+ ions were implanted with an energy of 800 keV and a dose of 10(15) ion cm(-2). An annealing treatment at 850 degrees C for 45 min in H2 plasma (80 Torr) was required to rearrange metastable diamond produced by an implantation process. Characterization was investigated by SEM, AFM, Raman, and X-ray photoelectron spectroscopy. Cyclic voltammetry and flow injection analysis with amperometric detection were used to study the electrochemical reaction. The electrodes exhibited high catalytic activity toward As(III) oxidation with the detection limit (S/N = 3), sensitivity, and linearity of 20 nM (1.5 ppb), 93 nA microM(-1) cm(-2), and 0.999, respectively. The precision for 10 replicate determinations of 50 microM As(III) was 4.56% relative standard deviation. The advantageous properties of the electrodes were its inherent stability with a very low background current. The electrode was applicable for analysis of spiked arsenic in tap water containing a significant amount of various ion elements. The results indicate that the metal-implanted method could be promising for controlling the electrochemical properties of diamond electrodes.


Asunto(s)
Arsenitos/análisis , Boro/química , Diamante/química , Electrodos , Iridio/química , Potenciometría/métodos , Contaminantes Químicos del Agua/análisis , Humanos , Microscopía de Fuerza Atómica , Microscopía Electrónica de Rastreo , Potenciometría/instrumentación , Espectrometría Raman
11.
Artículo en Japonés | MEDLINE | ID: mdl-17405521

RESUMEN

Analytical methods for red tar colors, Helindone Pink CN (R226) and Permaton Red (R228), in cheek rouge were developed. R226 and R228 were extracted from cheek rouge with chloroform by ultrasonication. After centrifugation, the supernatant was collected for the determination of R226 and R228. Methanol was then added to the residue for the extraction of Pigment Red 57-1 (R201) and Pigment Red 57 (R202). Each R226 and R228 was separately detected by the silica-gel thin-layer chromatography using the mixture of hexane and chloroform (2:1) or (3:1), or hexane and tetrahydrofuran (THF) (2:1) as a developing solvent. For the determination of R226 and R228, the extract in chloroform was injected into the HPLC equipped with Amide colomn and UV-VIS detector (detection wavelength 535 nm and 487 nm) using the mixture of hexane and THF as mobile phase. The linearity was obtained between the peak areas and the concentrations of R226 and R228 in the range of 0.625-10 microg/ml. R201 and R202 were determined using ODS column and the mixture of acetonitrile and phosphate buffer as mobile phase. Seven cheek rouge samples were analyzed. The red tar colors listed in each cheek rouge were contained in the range of 247 to 6574 microg/g.


Asunto(s)
Cromatografía Líquida de Alta Presión/métodos , Colorantes/análisis , Cosméticos/química , Cromatografía en Capa Delgada , Colorantes/aislamiento & purificación
12.
Anal Sci ; 21(5): 531-5, 2005 May.
Artículo en Inglés | MEDLINE | ID: mdl-15913142

RESUMEN

The electrochemical analysis of tetracycline was investigated using nickel-implanted boron-doped diamond thin film electrode by cyclic voltammetry and amperometry with a flow injection system. Cyclic voltammetry was used to study the electrochemical oxidation of tetracycline. Comparison experiments were carried out using as-deposited boron-doped diamond thin film electrode (BDD). Nickel-implanted boron-doped diamond thin film electrode (Ni-DIA) provided well-resolved oxidation irreversible cyclic voltammograms. The current signals were higher than those obtained using the as-deposited BDD electrode. Results using nickel-implanted boron-doped diamond thin film electrode in flow injection system coupled with amperometric detection are presented. The optimum potential for tetracycline was 1.55 V versus Ag/AgCl. The linear range of 1.0 to 100 microM and the detection limit of 10 nM were obtained. In addition, the application for drug formulation was also investigated.


Asunto(s)
Antibacterianos/análisis , Boro/química , Níquel/química , Tetraciclina/análisis , Cápsulas/análisis , Electroquímica , Electrodos , Análisis de Inyección de Flujo , Concentración de Iones de Hidrógeno , Indicadores y Reactivos
13.
Appl Environ Microbiol ; 69(7): 4274-7, 2003 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-12839813

RESUMEN

A 3.7-kb cryptic plasmid designated pMGT was found in Magnetospirillum magneticum MGT-1. It was characterized and used for the development of an improved expression system in strain AMB-1 through the construction of a shuttle vector, pUMG. An electroporation method for magnetic bacteria that uses the cryptic plasmid was also developed.


Asunto(s)
Vectores Genéticos , Plásmidos/genética , Rhodospirillaceae/genética , Clonación Molecular , Conjugación Genética , Electroporación , Escherichia coli/genética , Escherichia coli/metabolismo , Replicón
14.
Appl Environ Microbiol ; 68(8): 3867-72, 2002 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-12147483

RESUMEN

Naphtho[2,1-b]thiophene (NTH) is an asymmetric structural isomer of dibenzothiophene (DBT), and in addition to DBT derivatives, NTH derivatives can also be detected in diesel oil following hydrodesulfurization treatment. Rhodococcus sp. strain WU-K2R was newly isolated from soil for its ability to grow in a medium with NTH as the sole source of sulfur, and growing cells of WU-K2R degraded 0.27 mM NTH within 7 days. WU-K2R could also grow in the medium with NTH sulfone, benzothiophene (BTH), 3-methyl-BTH, or 5-methyl-BTH as the sole source of sulfur but could not utilize DBT, DBT sulfone, or 4,6-dimethyl-DBT. On the other hand, WU-K2R did not utilize NTH or BTH as the sole source of carbon. By gas chromatography-mass spectrometry analysis, desulfurized NTH metabolites were identified as NTH sulfone, 2'-hydroxynaphthylethene, and naphtho[2,1-b]furan. Moreover, since desulfurized BTH metabolites were identified as BTH sulfone, benzo[c][1,2]oxathiin S-oxide, benzo[c][1,2]oxathiin S,S-dioxide, o-hydroxystyrene, 2-(2'-hydroxyphenyl)ethan-1-al, and benzofuran, it was concluded that WU-K2R desulfurized NTH and BTH through the sulfur-specific degradation pathways with the selective cleavage of carbon-sulfur bonds. Therefore, Rhodococcus sp. strain WU-K2R, which could preferentially desulfurize asymmetric heterocyclic sulfur compounds such as NTH and BTH through the sulfur-specific degradation pathways, is a unique desulfurizing biocatalyst showing properties different from those of DBT-desulfurizing bacteria.


Asunto(s)
Rhodococcus/metabolismo , Azufre/metabolismo , Tiofenos/metabolismo , Carbono , Medios de Cultivo , Cromatografía de Gases y Espectrometría de Masas , Rhodococcus/crecimiento & desarrollo , Tiofenos/química
15.
Curr Opin Nephrol Hypertens ; 11(3): 343-6, 2002 May.
Artículo en Inglés | MEDLINE | ID: mdl-11981266

RESUMEN

Regional variations in end-stage renal disease have been found within a country, even within a race. Since diabetic nephropathy is the leading cause of end-stage renal disease in developed countries, first of all, regional differences in diabetic nephropathy must be considered. Although the incidence of end-stage renal disease due to diabetic nephropathy has been found to differ among different areas within a country, there are no data on regional variations in the incidence of type II diabetes or diabetic nephropathy without renal failure. Such regional variations could hardly be explained by local differences in gene pools alone, which suggests an important role of environmental factors. It is not clear at present how regional variations in the incidence of end-stage renal disease are generated. If we can identify the factors that contribute to the regional differences, we can take these into account in future treatment strategies for renal disease. Thus, much effort is required in further analysis of regional differences in end-stage renal disease dynamics.


Asunto(s)
Fallo Renal Crónico/epidemiología , Nefropatías Diabéticas/epidemiología , Salud Global , Humanos , Incidencia
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA