Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 57
Filtrar
1.
J Formos Med Assoc ; 2024 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-38977388

RESUMO

PURPOSE: In the health-care system within hospitals, Taiwanese patients usually play the role of passively cooperating with health-care professionals. Therefore, patients rarely make their own treatment decisions. This study evaluated the level of patient education and patient satisfaction in relation to empowerment level in Taiwan. METHODS: A cross-sectional survey by a self-administered structured questionnaire was carried out with 618 inpatients from the four hospitals. Statistical analyses were then conducted. Analysis of covariance and post-hoc comparison was used to compare differences between the level of patient empowerment, age, and education as covariates in the model. RESULTS: This study found that 21.2% and 35.6% of participants were highly empowered and well empowered, respectively. Years of education is a significant covariate in the counselling domain of patient education. Even after controlling for age and education level, the counselling, answer question and justifying action, providing information scores remain significant for all levels after adjusting for the effects of degree of patient empowerment. Patients with higher empowerment also having more-sufficient patient education, indicating a tendency toward higher patient satisfaction. Patient education and counselling practices in Taiwan's clinical practice could be improved to enhance patient empowerment and ensure health-care systems are person-centred. CONCLUSIONS: To move more toward highly patient empowerment, we suggest that health-care professionals advocate a patient-empowerment approach and to provide more counselling related to patients' illnesses and possible treatments.

2.
Polymers (Basel) ; 16(10)2024 May 13.
Artigo em Inglês | MEDLINE | ID: mdl-38794581

RESUMO

Hydrogels, recognized for their flexibility and diverse characteristics, are extensively used in medical fields such as wearable sensors and soft robotics. However, many hydrogel sensors derived from biomaterials lack mechanical strength and fatigue resistance, emphasizing the necessity for enhanced formulations. In this work, we utilized acrylamide and polyacrylamide as the primary polymer network, incorporated chemically modified poly(ethylene glycol) (DF-PEG) as a physical crosslinker, and introduced varying amounts of methacrylated lysine (LysMA) to prepare a series of hydrogels. This formulation was labeled as poly(acrylamide)-DF-PEG-LysMA, abbreviated as pADLx, with x denoting the weight/volume percentage of LysMA. We observed that when the hydrogel contained 2.5% w/v LysMA (pADL2.5), compared to hydrogels without LysMA (pADL0), its stress increased by 642 ± 76%, strain increased by 1790 ± 95%, and toughness increased by 2037 ± 320%. Our speculation regarding the enhanced mechanical performance of the pADL2.5 hydrogel revolves around the synergistic effects arising from the co-polymerization of LysMA with acrylamide and the formation of multiple intermolecular hydrogen bonds within the network structures. Moreover, the acid, amine, and amide groups present in the LysMA molecules have proven to be instrumental contributors to the self-adhesion capability of the hydrogel. The validation of the pADL2.5 hydrogel's exceptional mechanical properties through rigorous tensile tests further underscores its suitability for use in strain sensors. The outstanding stretchability, adhesive strength, and fatigue resistance demonstrated by this hydrogel affirm its potential as a key component in the development of robust and reliable strain sensors that fulfill practical requirements.

3.
Polymers (Basel) ; 15(22)2023 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-38006102

RESUMO

Hydrogels' exceptional mechanical strength and skin-adhesion characteristics offer significant advantages for various applications, particularly in the fields of tissue adhesion and wearable sensors. Herein, we incorporated a combination of metal-coordination and hydrogen-bonding forces in the design of stretchable and adhesive hydrogels. We synthesized four hydrogels, namely PAID-0, PAID-1, PAID-2, and PAID-3, consisting of acrylamide (AAM), N,N'-methylene-bis-acrylamide (MBA), and methacrylic-modified dopamine (DA). The impact of different ratios of iron (III) ions to DA on each hydrogel's performance was investigated. Our results demonstrate that the incorporation of iron-dopamine complexes significantly enhances the mechanical strength of the hydrogel. Interestingly, as the DA content increased, we observed a continuous and substantial improvement in both the stretchability and skin adhesiveness of the hydrogel. Among the hydrogels tested, PAID-3, which exhibited optimal mechanical properties, was selected for adhesion testing on various materials. Impressively, PAID-3 demonstrated excellent adhesion to diverse materials and, combined with the low cytotoxicity of PAID hydrogel, holds great promise as an innovative option for biomedical engineering applications.

4.
ACS Omega ; 8(7): 6753-6761, 2023 Feb 21.
Artigo em Inglês | MEDLINE | ID: mdl-36844572

RESUMO

Hydrogels are conductive and stretchable, allowing for their use in flexible electronic devices, such as electronic skins, sensors, human motion monitoring, brain-computer interface, and so on. Herein, we synthesized the copolymers having various molar ratios of 3,4-ethylenedioxythiophene (EDOT) to thiophene (Th), which served as conductive additives. With doping engineering and incorporation with P(EDOT-co-Th) copolymers, hydrogels have presented excellent physical/chemical/electrical properties. It was found that the mechanical strength, adhesion ability, and conductivity of hydrogels were highly dependent on the molar ratio of EDOT to Th of the copolymers. The more the EDOT, the stronger the tensile strength and the greater the conductivity, but the lower the elongation break tends to be. By comprehensively evaluating the physical/chemical/electrical properties and cost of material use, the hydrogel incorporated with a 7:3 molar ratio P(EDOT-co-Th) copolymer was an optimal formulation for soft electronic devices.

5.
Bioconjug Chem ; 34(3): 562-571, 2023 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-36847641

RESUMO

We report a new peptide-based urchin-shaped structure prepared through two-step self-assembly of tetraphenylethylene-diserine (TPE-SS). Hydrogelation generated nanobelts through the first stage of self-assembly of TPE-SS; these nanobelts further transformed on silicon wafers into urchin-like microstructures featuring nanosized spines. The presence of the TPE moiety in the hydrogelator resulted in aggregation-induced emission characteristics both in the solution and in the gel phases. TPE-SS has the lowest molecular weight of any TPE-capped hydrogelator with ß-sheet-like structures under physiological pH. This new design strategy appears to be useful for generating three-dimensional self-assembled microstructures and multifunctional biomaterials. We found that TPE-SS is biocompatible with human mesenchymal stem cells and breast cancer cells, making them potential applications in tissue engineering and biomedical research.


Assuntos
Estilbenos , Humanos , Estilbenos/química , Materiais Biocompatíveis
6.
J Magn Reson Imaging ; 56(6): 1863-1871, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-35396789

RESUMO

BACKGROUND: Recently, a data-driven regression analysis method was developed to utilize the resting-state (rs) blood oxygenation level-dependent signal for cerebrovascular reactivity (CVR) mapping (rs-CVR), which was previously optimized by comparing with the CO2 inhalation-based method in health subjects and patients with neurovascular diseases. PURPOSE: To investigate the agreement of rs-CVR and the CVR mapping with breath-hold MRI (bh-CVR) in patients with gliomas. STUDY TYPE: Retrospective. POPULATION: Twenty-five patients (12 males, 13 females; mean age ± SD, 48 ± 13 years) with gliomas. FIELD STRENGTH/SEQUENCE: Dynamic T2*-weighted gradient-echo echo-planar imaging during a breath-hold paradigm and during the rs on a 3-T scanner. ASSESSMENT: rs-CVR with various frequency ranges and resting-state fluctuation amplitude (RSFA) were assessed. The agreement between each rs-based CVR measurement and bh-CVR was determined by voxel-wise correlation and Dice coefficient in the whole brain, gray matter, and the lesion region of interest (ROI). STATISTICAL TESTS: Voxel-wise Pearson correlation, Dice coefficient, Fisher Z-transformation, repeated-measure analysis of variance and post hoc test with Bonferroni correction, and nonparametric repeated-measure Friedman test and post hoc test with Bonferroni correction were used. Significance was set at P < 0.05. RESULTS: Compared with bh-CVR, the highest correlations were found at the frequency bands of 0.04-0.08 Hz and 0.02-0.04 Hz for rs-CVR in both whole brain and the lesion ROI. RSFA had significantly lower correlations than did rs-CVR of 0.02-0.04 Hz and a wider frequency range (0-0.1164 Hz). Significantly higher correlations and Dice coefficient were found in normal tissues than in the lesion ROI for all three methods. DATA CONCLUSION: The optimal frequency ranges for rs-CVR are determined by comparing with bh-CVR in patients with gliomas. The rs-CVR method outperformed the RSFA. Significantly higher correlation and Dice coefficient between rs- and bh-CVR were found in normal tissue than in the lesion. LEVEL OF EVIDENCE: 3 TECHNICAL EFFICACY STAGE: 2.


Assuntos
Mapeamento Encefálico , Glioma , Masculino , Feminino , Humanos , Mapeamento Encefálico/métodos , Circulação Cerebrovascular , Estudos Retrospectivos , Imageamento por Ressonância Magnética/métodos , Encéfalo/diagnóstico por imagem , Encéfalo/irrigação sanguínea , Glioma/diagnóstico por imagem
7.
Healthcare (Basel) ; 9(10)2021 Sep 29.
Artigo em Inglês | MEDLINE | ID: mdl-34682971

RESUMO

BACKGROUND: The development of nursing students' ability to practice humanistic care is extremely important. METHODS: This study explored students' learning experience when providing humanistic care for older adults with chronic diseases while employing intergenerational narrative learning. An exploratory descriptive qualitative study design was adopted. RESULTS: We analyzed evaluations from 35 students who completed the course, in which intergenerational narrative learning was employed. Evaluations contained open-ended questions that asked students to reflect upon their experiences and describe their perceptions, thoughts, and feelings after the course. Three main themes were revealed by thematic analysis: direct interaction supersedes knowledge in books, the framework for improving humanistic caring, and internalization of the importance of humanistic care in nursing. CONCLUSION: An awareness of patients' perspectives inspired the students in their development toward a more profound caring attitude. The intergenerational narrative learning teaching strategy could foster professional and humanistic-centered care in nursing students.

8.
Gels ; 7(4)2021 Oct 05.
Artigo em Inglês | MEDLINE | ID: mdl-34698178

RESUMO

Conductive hydrogels with stretchable, flexible and wearable properties have made significant contributions in the area of modern electronics. The polyacrylamide/alginate hydrogels are one of the potential emerging materials for application in a diverse range of fields because of their high stretch and toughness. However, most researchers focus on the investigation of their mechanical and swelling behaviors, and the adhesion and effects of the ionic liquids on the conductivities of polyacrylamide/alginate hydrogels are much less explored. Herein, methacrylated lysine and different alkyl chain substituted imidazole-based monomers (IMCx, x = 2, 4, 6 and 8) were introduced to prepare a series of novel pAMAL-IMCx-Ca hydrogels. We systematically investigated their macroscopic and microscopic properties through tensile tests, electrochemical impedance spectra and scanning electron microscopy, as well as Fourier transform infrared spectroscopy, and demonstrated that an alkyl chain length of the IMCx plays an important role in the designing of hydrogel strain sensors. The experiment result shows that the hexyl chains of IMC6 can effectively entangle with LysMA through hydrophobic and electrostatic interactions, which significantly enhance the mechanical strength of the hydrogels. Furthermore, the different strain rates and the durability of the pAMAL-IMC6-Ca hydrogel were investigated and the relative resistance responses remain almost the same in both conditions, making it a potential candidate for wearable strain sensors.

9.
Hosp Pediatr ; 11(5): 462-471, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33820809

RESUMO

BACKGROUND: Many hospitalized children are underimmunized, yet little is known about current systems supporting inpatient vaccination. We aim to describe national pediatric inpatient immunization practices and determine if variation exists among adolescent, childhood, and influenza vaccines. METHODS: An electronic survey regarding hospital vaccination practices was sent to physician, nurse, and pharmacy leaders via the Pediatric Research in Inpatient Settings Network in spring 2019. Hospitals reported the presence of various practices to support inpatient vaccination stratified by vaccine type: tetanus, diphtheria, and acellular pertussis, meningococcal, human papillomavirus, childhood series, and influenza. One-way analysis of variance testing compared differences in numbers of practices and χ2 tests compared proportions of sites reporting each practice between vaccine types. Qualitative responses were evaluated via content analysis. RESULTS: Fifty-one of 103 eligible hospitals completed the survey (50%). Standardized policies existed in 92% of hospitals for influenza, 41% for childhood, and 29% for adolescent vaccines. Hospitals identified an average of 5.1 practices to deliver influenza vaccines, compared with 1.5 for childhood; 0.9 for tetanus, diphtheria, and acellular pertussis; 0.7 for meningococcal; and 0.6 for human papillomavirus vaccines (P < .001). Standardized screening tools, visual prompts, standing orders, nurse- or pharmacy-driven screening or ordering, staff education, and quality improvement projects were reported more often for influenza vaccines than other vaccine types (P < .01 for all comparisons). Common barriers to delivery included communication difficulties, lack of systems optimization, and parent and provider discomfort with inpatient immunization. CONCLUSIONS: Existing hospital infrastructure supports influenza vaccine delivery over other vaccine types, potentially creating missed inpatient vaccination opportunities.


Assuntos
Vacinas contra Influenza , Pacientes Internados , Adolescente , Criança , Humanos , Imunização , Políticas , Vacinação
10.
RSC Adv ; 11(63): 40228-40234, 2021 Dec 13.
Artigo em Inglês | MEDLINE | ID: mdl-35494111

RESUMO

Materials that have higher fluorescence emission in the solid state than molecules in solution have recently been paid more attention by the scientific community due to their potential applications in various fields. In this work, we newly synthesized benzoxazolyl-imidazole and benzothiazolyl-imidazole conjugates, which show aggregation-induced emission (AIE) features in their solid and aggregate states. It was found that oxygen and sulfur substitutions can dramatically influence the molecular structures and polarities of the dyes, leading to different degrees of the AIE phenomenon. The benzothiazolyl-imidazole molecule has lower polarity compared to that of benzoxazolyl-imidazole; therefore, the dye bearing a benzothiazolyl group shows higher emission intensity and dual emission in aqueous solution. Theoretical calculation results suggest that the benzothiazolyl-imidazole molecules might have electrostatic interactions between sulfur and nitrogen atoms, explaining the experimental observations of lower critical aggregation concentration and photophysical properties both in solution and in the solid state. The theoretical calculations agree with the experimental data, thus demonstrating a potent strategy to gain a deep understanding of the structure-property relationships to design solid-state fluorescent materials.

11.
RSC Adv ; 11(12): 6620-6627, 2021 Feb 04.
Artigo em Inglês | MEDLINE | ID: mdl-35423172

RESUMO

Conductive self-healing hydrogels and related soft sensor devices are gaining extensive attention from academia to industry because of their impacts on the lifetime and ergonomic design of artificial skins and soft robotics, as well as health monitoring systems. However, so far the development of such a material has been limited considering performance and availability. In this work, we developed composite hydrogels of acrylamide, polyacrylamide, dialdehyde-functionalized poly(ethylene glycol) and conductive carbon black through an interpenetrating polymer network strategy. After optimizing the composition ratio, the resultant hydrogel exhibited self-healing reversibility mechanically and electrically when cut and self-healed. We used 1H NMR and FT-IR spectroscopy to determine the self-healing mechanism of the system, thus demonstrating that the cooperative effect of the dynamic covalent and noncovalent interactions contributes to the self-healing capability of the gel. Rheology, scanning electron microscopy and light-emitting diode circuits were carried out to examine its macroscopic and microscopic properties, making it possible to apply in soft and conformable electronics.

12.
Pediatr Hematol Oncol ; 38(3): 239-250, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33170064

RESUMO

Malnutrition is associated with treatment-related toxicities (TRT) in adults with solid tumors and in children with leukemia. Few studies have assessed whether malnutrition in pediatric patients treated for solid tumors impacts risk for TRT, relapse, and/or survival. To address this knowledge gap, this retrospective study evaluated the association between body mass index (BMI) at diagnosis, and imputed BMI during therapy, on the prevalence of TRT, specific toxicities, relapse, and survival in pediatric patients with solid tumors treated with cisplatin-containing regimens. Kaplan-Meier curves and regression models evaluated the association between patient-specific characteristics (including BMI) and TRT, relapse, and survival. The cohort included 221 patients, of whom 22% were malnourished at diagnosis (10% were underweight and 12% were obese). Most patients (60%) experienced at least one severe TRT, and 30% developed more than one severe TRT. Most patients with obesity at diagnosis remained obese during therapy (62%). In multivariable analysis, obesity at diagnosis was significantly associated with a more than threefold greater risk for developing severe TRT (p = 0.037), specifically for acute or chronic kidney injury (p = 0.014). Obesity at diagnosis and adolescent and young adult age (≥15 years at diagnosis) were associated with worse event-free survival (hazard ratio [HR] 2.32, p = 0.024 and HR 2.28, p = 0.010, respectively) and overall survival (HR 3.69, p = 0.006 and HR 2.6, p = 0.012, respectively). Obese and older patients therefore constitute populations at risk for poorer outcomes. Prospective studies are warranted to gain further insight into the mechanism and role of obesity and adolescence in developing TRT and/or treatment failure.


Assuntos
Antineoplásicos/efeitos adversos , Cisplatino/efeitos adversos , Desnutrição/complicações , Neoplasias/complicações , Neoplasias/tratamento farmacológico , Obesidade/complicações , Adolescente , Antineoplásicos/uso terapêutico , Antineoplásicos/toxicidade , Índice de Massa Corporal , Criança , Cisplatino/uso terapêutico , Cisplatino/toxicidade , Feminino , Humanos , Masculino , Intervalo Livre de Progressão , Modelos de Riscos Proporcionais , Estudos Retrospectivos , Análise de Sobrevida
13.
Pediatr Diabetes ; 21(7): 1116-1125, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-33103329

RESUMO

OBJECTIVE: To identify risk factors for glycemic failure in youth with type 2 diabetes (T2D). METHODS: A retrospective review of HbA1c, anthropomorphic measures, medication records, and laboratory studies was performed using registry data from a dedicated pediatric T2D clinic. Latent profile analysis (LPA) was performed to model longitudinal trajectory of HbA1c over 5 years. RESULTS: The registry includes 229 youth with T2D, of whom 80% self-identify as Latinx. The odds ratio (OR) for uncontrolled diabetes 5 years after diagnosis correlated with diagnostic HbA1c, with OR of 2.41 if HbA1c at diagnosis >8.5% (sensitivity 68%, specificity 54%, P = .015). LPA modeling identified three HbA1c profiles: (a) mean HbA1c <8% throughout the 5 years, (b) persistent elevation of mean HbA1c >9%, and (c) mean HbA1c of 12% at diagnosis, rapid decline to 6.4% by 4 to 6 months, and increase to 11% by 18 months. Our analysis of medication regimen showed that, amongst patients treated with metformin, the addition of multiple daily injections (MDI) did not improve HbA1c compared to those on basal insulin. Finally, weight loss over the 1 year after diagnosis correlated with improvement in HbA1c in both subjects prescribed metformin monotherapy, as well as insulin-containing regimen. CONCLUSION: Youth with T2D exhibit distinct HbA1c profiles. Patients with diagnostic HbA1c >8.5% are at high risk for glycemic failure, irrespective of short-term improvement in HbA1c. Weight management has the potential to improve short-term HbA1c outcome in youth with T2D. Additional studies are needed to determine the role of medication adherence on glycemic control.


Assuntos
Diabetes Mellitus Tipo 2/terapia , Hemoglobinas Glicadas/análise , Controle Glicêmico , Redução de Peso/fisiologia , Adolescente , Índice de Massa Corporal , Criança , Diabetes Mellitus Tipo 2/sangue , Diabetes Mellitus Tipo 2/fisiopatologia , Feminino , Hispânico ou Latino , Humanos , Hipoglicemiantes/administração & dosagem , Insulina/administração & dosagem , Los Angeles , Masculino , Metformina/administração & dosagem , Razão de Chances , Cooperação do Paciente , Fatores de Risco
14.
Medicine (Baltimore) ; 98(19): e15562, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-31083222

RESUMO

A recent Taiwanese government report indicated that there were an increased number of sexual encounters among 15- to 17-year-old adolescents. Among them, indigenous Taiwanese had a higher rate of sexual encounters than did the rest of the population. However, no prior study has surveyed indigenous Taiwanese adolescents' sexual behavior. Therefore, we examined the determinants of sexual behavior among indigenous adolescents in Taiwan.In this cross-sectional study, the researchers chose 16 high schools as the target research population; after 2-stage random sampling, 4 of the 16 high schools were recruited to participate in the research. Data were collected through a self-report questionnaire from the participants, with a total of 521 valid responses.Of the indigenous adolescents surveyed, 53% (N = 275) said they had touching, hugging, or kissing experiences, while 15.7% (N = 82) reported sexual behavior. The higher rate of sexual encounters among indigenous Taiwanese adolescents is associated with the gender, number of current or past romantic partners, drinking, and drug use before sexual intercourse. After adjustment for confounding factors, gender (male vs female, adjusted OR = 3.33, 95% CI: 1.83-6.07), number of heterosexual (≧1 vs no, OR = 1.67, 95% CI: 1.36-2.06), and heterosexual relationship (yes vs no, OR = 3.81, 95% CI: 1.94-7.48) appeared to be statistically significantly related sexual behaviors.This study found that the occurrence rate of sexual behavior for indigenous adolescents was higher than the past research results, and having initiated sexual intercourse in earlier age. The results also showed the indigenous adolescents whose drinking alcohol and drug use are more experiences on sexual behaviors. The results could be applied on sexual education program in campus.


Assuntos
Comportamento do Adolescente/etnologia , Comportamento Sexual/etnologia , Adolescente , Estudos Transversais , Feminino , Humanos , Masculino , Prevalência , Fatores Sexuais , Transtornos Relacionados ao Uso de Substâncias/etnologia , Taiwan/epidemiologia
15.
BMC Neurol ; 19(1): 62, 2019 Apr 12.
Artigo em Inglês | MEDLINE | ID: mdl-30979362

RESUMO

BACKGROUND: Trigeminal neuralgia (TN) is characterized by facial pain that may be sudden, intense, and recurrent. Neurosurgical interventions, such as radiofrequency rhizotomy, can relieve TN pain, but their mechanisms and effects are unknown. The aim of the present study was to investigate the microstructural tissue changes of the trigeminal nerve (TGN) in patients with TN after they underwent radiofrequency rhizotomy. METHODS: Thirty-seven patients with TN were recruited, and diffusion tensor imaging was obtained before and two weeks after radiofrequency rhizotomy. By manually selecting the cisternal segment of the TGN, we measured the volume of the TGN, fractional anisotropy (FA), apparent diffusion coefficient (ADC), axial diffusivity (AD), and radial diffusivity (RD). The TGN volume and mean value of the DTI metrics of the post-rhizotomy lesion side were compared with those of the normal side and those of the pre-rhizotomy lesion side, and they were correlated to the post-rhizotomy visual analogue scale (VAS) pain scores after a one-year follow-up. RESULTS: The alterations before and after rhizotomy showed a significantly increased TGN volume and FA, and a decreased ADC, AD, and RD. The post-rhizotomy lesion side showed a significantly decreased TGN volume, FA, and AD compared with the normal side; however, no significant difference in the ADC and RD were found between the groups. The TGN volume was significantly higher in the non-responders than in the responders (P = 0.016). CONCLUSION: Our results may reflect that the effects of radiofrequency rhizotomy in TN patients include axonal damage with perineural edema and that prolonged swelling associated with recurrence might be predicted by MRI images. Further studies are necessary to understand how DTI metrics can quantitatively represent the pathophysiology of TN and to examine the application of DTI in the treatment of TN.


Assuntos
Nervo Trigêmeo/diagnóstico por imagem , Nervo Trigêmeo/patologia , Neuralgia do Trigêmeo/diagnóstico por imagem , Neuralgia do Trigêmeo/patologia , Neuralgia do Trigêmeo/cirurgia , Adulto , Axônios/patologia , Imagem de Tensor de Difusão/métodos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Rizotomia , Resultado do Tratamento , Nervo Trigêmeo/cirurgia
16.
Chem Commun (Camb) ; 55(8): 1060-1063, 2019 Jan 25.
Artigo em Inglês | MEDLINE | ID: mdl-30617356

RESUMO

We report a novel fluorescent bioprobe, tetraphenylethylene-Phe-Asp-Gly-Glu-Ala (TPE-FDGEA), and its self-assembly behavior, photophysical properties, and biocompatibility. The hydrogelator TPE-FDGEA exhibited aggregation-induced emission characteristics, which facilitated imaging of PC-3 human prostate cancer cells, thereby demonstrating the utility of such fluorescent probes for specific labeling of target cells in vitro.


Assuntos
Corantes Fluorescentes/química , Oligopeptídeos/química , Imagem Óptica , Neoplasias da Próstata/diagnóstico por imagem , Estilbenos/química , Sobrevivência Celular/efeitos dos fármacos , Corantes Fluorescentes/síntese química , Corantes Fluorescentes/farmacologia , Humanos , Masculino , Microscopia de Força Atômica , Microscopia Eletrônica de Transmissão , Estrutura Molecular , Oligopeptídeos/farmacologia , Células PC-3 , Neoplasias da Próstata/tratamento farmacológico , Estilbenos/farmacologia
17.
Front Neurol ; 9: 786, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30294297

RESUMO

Background: Dehydration is common among ischemic stroke patients and is associated with early neurological deterioration and poor outcome. This study aimed to test the hypothesis that dehydration status is associated with decreased cerebral perfusion and aggravation of ischemic brain injury. Methods: Diffusion-weighted imaging and arterial spin labeling perfusion MR imaging were performed on rats with middle cerebral artery occlusion (MCAO) by using a 9.4T MR imaging scanner to measure the volume of infarction and relative cerebral blood flow (rCBF) after infarction. Twenty-five rats were assigned to either a dehydration group or normal hydration group, and dehydration status was achieved by water deprivation for 48 h prior to MCAO. Results: The volume of the infarction was significantly larger for the dehydration group at the 4th h after MCAO (p = 0.040). The progression in the infarct volume between the 1st and 4th h was also larger in the dehydration group (p = 0.021). The average rCBF values of the contralateral normal hemispheres at the 1st and the 4th h were significantly lower in the dehydration group (p = 0.027 and 0.040, respectively). Conclusions: Our findings suggested that dehydration status is associated with the progression of infarct volume and decreases in cerebral blood flow during the acute stage of ischemic stroke. This preliminary study provided an imaging clue that more intensive hydration therapies and reperfusion strategies are necessary for the management of acute ischemic stroke patients with dehydration status.

18.
Neuroimage Clin ; 20: 476-484, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30128286

RESUMO

Objective: Neural disruption and cognitive impairment have been reported in patients with carotid stenosis (CS), but carotid artery stenting (CAS) may not contribute to the cognitive recovery. Although functional hyper-connectivity is one of the physiological over-compensation phenomena in neurological diseases, the literature on the cognitive influence of functional hyper-connectivity in CS patients is limited. We aimed to investigate the longitudinal changes of hyper-connectivity after CAS and its association with cognition in CS patients. Methods: Thirteen patients with unilateral CS and 17 controls without CS were included. Cognitive function was evaluated at baseline, and resting-state functional MRI was performed 1 week before and 1 month and 1 year after CAS. Comparisons of functional connectivity (FC) between CS patients and controls in multiple brain networks were performed. Results: In patients before CAS, FC in the cerebral hemispheres ipsilateral and contralateral to CS was mainly decreased and increased, respectively, compared with normal controls. Part of the FC alterations gradually recovered to the normal condition after CAS. The stronger FC abnormality (both hypo- and hyper-connectivity compared with normal controls) was associated with poorer cognitive performances, especially in memory and executive functions. Conclusion: The study demonstrated the lateralization of hyper-connectivity and hypo-connectivity in patients with unilateral CS in contrast to the FC in normal controls. These FC alterations were associated with poor cognitive performances and tended to recover after CAS, implying that hyper-connectivity is served as a compensation for neural challenge.


Assuntos
Encéfalo/diagnóstico por imagem , Estenose das Carótidas/diagnóstico por imagem , Estenose das Carótidas/cirurgia , Cognição/fisiologia , Lateralidade Funcional/fisiologia , Reperfusão/métodos , Idoso , Idoso de 80 Anos ou mais , Angioplastia/instrumentação , Angioplastia/métodos , Encéfalo/fisiopatologia , Estenose das Carótidas/fisiopatologia , Disfunção Cognitiva/diagnóstico por imagem , Disfunção Cognitiva/fisiopatologia , Feminino , Humanos , Estudos Longitudinais , Imageamento por Ressonância Magnética/métodos , Masculino , Pessoa de Meia-Idade , Reperfusão/instrumentação , Stents
19.
Appl Nurs Res ; 39: 11-17, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-29422144

RESUMO

PURPOSE: Patient empowerment is a paradigm of clinical practice. The goal of patient empowerment is to lead patients' health and wellbeing. The aim of this study is to evaluate the relation between patient education, patient empowerment and patient satisfaction based on multi-hospital cross-sectional study design in Taiwan. METHODS: In this cross-sectional survey, 609 inpatients in four teaching hospitals in northern Taiwan from August 2009 to July 2010 were recruited. Data were collected using Chinese version of the Patient Perceptions of Empowerment Scale (PPES), Sufficiency of Patient Education Questionnaire (SPEQ) and Patient Satisfaction Questionnaire (PSQ). The multiple linear regression model was used to assess the independent effects of relevant factors on patient empowerment after controlling for the covariates. RESULTS: The overall mean empowerment scores was 44.80±5.94. There was a significant difference between the total scores and four dimensions of patient empowerment at different hospitals (t=5.44, p≤0.01). Sufficient patient education (ß=0.568, 95%CI: 0.486-0.649) and patient satisfaction (ß=0.317, 95%CI: 0.259-0.375) could significantly predict patient empowerment based on the multiple linear regression analysis, with a total variance was 54.4%. CONCLUSIONS: In conclusion, both sufficient patient education and patient satisfaction were positively related to patient empowerment. Hospitals in Taiwan should try to improve their patients' active involvement toward empowerment.


Assuntos
Educação de Pacientes como Assunto , Participação do Paciente/psicologia , Satisfação do Paciente , Poder Psicológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Hospitais de Ensino , Humanos , Masculino , Pessoa de Meia-Idade , Inquéritos e Questionários , Taiwan
20.
Hu Li Za Zhi ; 65(1): 96-103, 2018 Feb.
Artigo em Chinês | MEDLINE | ID: mdl-29405025

RESUMO

Attending lectures and reading are two common approaches to acquiring knowledge, while repetitive practice is a common approach to acquiring skills. Nurturing proper attitudes in students is one of the greatest challenges for educators. Health professionals must incorporate empathy into their practice. Creative teaching strategies may offer a feasible approach to enhancing empathy-related competence. The present article focuses on analyzing current, empathy-related curriculums in nursing education in Taiwan, exploring the concepts of empathy and game-based learning, presenting the development of an empathy board game as a teaching aid, and, finally, evaluating the developed education application. Based on the learner-centered principle, this aid was designed with peer learning, allowing learners to influence the learning process, to simulate the various roles of clients, and to develop diverse interpersonal dialogues. The continuous learning loops were formed using the gamification mechanism and transformation, enabling students to connect and practice the three elements of empathy ability: emotion, cognition and expression. Via the game elements of competition, interaction, storytelling, real-time responses, concretizing feedback, integrated peer learning, and equality between teachers and students, students who play patient roles are able to perceive different levels of comfort, which encourages the development of insight into the meaning of empathy. Thereby, the goals of the empathy lesson is achievable within a creative game-based learning environment.


Assuntos
Educação em Enfermagem , Empatia , Aprendizagem , Jogos Experimentais , Humanos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA