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1.
PM R ; 14(3): 377-382, 2022 03.
Artigo em Inglês | MEDLINE | ID: mdl-33773077

RESUMO

BACKGROUND: Few studies have evaluated the effect of final needle position on contrast flow patterns during the performance of cervical transforaminal epidural steroid injections (TFESIs). OBJECTIVE: To analyze fluoroscopically guided cervical TFESI contrast flow patterns based upon final needle tip position. DESIGN: Retrospective, observational in vivo study. SETTING: Outpatient private practice physical medicine and rehabilitation spine clinic. PARTICIPANTS: One hundred consecutive patients undergoing cervical TFESIs. INTERVENTIONS: Cervical TFESIs. MAIN OUTCOME MEASURES: Categories of contrast flow patterns including epidural, intraforaminal, "sufficient to inject," and "predominantly epidural and/or intraforaminal," based upon final needle tip position. RESULTS: Two independent observers reviewed images from 100 consecutive patients and classified injectate flow patterns stratified by needle tip position. The interrater reliability for all categories of interest was moderate, with kappa values from 0.61 to 0.76. More medially placed needles (middle third and lateral third of the articular pillars) resulted in higher rates of epidural contrast flow (75%; 95% confidence interval [CI]: 56%-94%; and 60%; 95% CI: 47%-73%) compared to needles placed lateral to the articular pillars (26%; 95% CI: 8%-44%), and higher rates of "predominantly epidural and/or intraforaminal" flow patterns with needles placed in the middle one third (75%; 95% CI: 56%-94%) and lateral one third of the articular pillars (47%; 95% CI: 34%-60%) compared to flow patterns when needles were placed lateral to the articular pillars (17%; 95% CI: 2%-32%). No needles were placed in the medial third of the articular pillars. CONCLUSIONS: More medially placed needle tips result in more optimal flow patterns during cervical TFESIs. The importance of this finding is unknown as clinical outcomes were not measured.


Assuntos
Agulhas , Esteroides , Humanos , Injeções Epidurais/métodos , Reprodutibilidade dos Testes , Estudos Retrospectivos
2.
Ann Biomed Eng ; 50(4): 401-412, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-35201548

RESUMO

A recent innovation in scoliosis monitoring is the use of ultrasonography, which provides true 3D information in one scan and does not emit ionizing radiation. Measuring the severity of scoliosis on ultrasonographs requires identifying lamina pairs on the most tilted vertebrae, which is difficult and time-consuming. To expedite and automate measurement steps, this paper detailed an automatic convolutional neural network-based algorithm for identifying the laminae on 3D ultrasonographs. The predicted laminae were manually paired to measure the lateral spinal curvature on the coronal view, called the Cobb angle. In total, 130 spinal ultrasonographs of adolescents with idiopathic scoliosis recruited from a scoliosis clinic were selected, with 70 for training and 60 for testing. Data augmentation increased the effective training set size to 140 ultrasonographs. Semi-automatic Cobb measurements were compared to manual measurements on the same ultrasonographs. The semi-automatic measurements demonstrated good inter-method reliability (ICC3,1 = 0.87) and performed better on thoracic (ICC3,1 = 0.91) than lumbar curves (ICC3,1 = 0.81). The mean absolute difference and standard deviation between semi-automatic and manual was 3.6° ± 3.0°. In conclusion, the semi-automatic method to measure the Cobb angle on ultrasonographs is feasible and accurate. This is the first algorithm that automates steps of Cobb angle measurement on ultrasonographs.


Assuntos
Escoliose , Coluna Vertebral , Adolescente , Humanos , Redes Neurais de Computação , Reprodutibilidade dos Testes , Escoliose/diagnóstico por imagem , Coluna Vertebral/diagnóstico por imagem , Ultrassonografia/métodos
3.
Bioanalysis ; 14(5): 307-316, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35195039

RESUMO

Aim: HCP002, a phosphate-modified derivative of voriconazole, can improve solubility without using the nephrotoxic solubilizer, sulfobutylether-ß-cyclodextrin. To study pharmacokinetics in humans, LC-MS/MS methods to quantify HCP002 in human plasma and urine were developed and validated. Method: After protein precipitation by acetonitrile containing voriconazole-d3, HCP002 was separated on a ZORBAX SB-Aq column, and LCMS/MS analysis was performed in multi-response monitoring mode. Results: The analytical run time was 3 min. Linearity was observed over the ranges of 0.100-40.0 and 0.400-200 µg/ml in plasma and urine, respectively. Precision and accuracy were within acceptable limits. Sample stability was confirmed. Conclusion: Rapid and reproducible methods quantified HCP002 in urine, and plasma samples were established.


Assuntos
Plasma , Espectrometria de Massas em Tandem , Cromatografia Líquida/métodos , Humanos , Reprodutibilidade dos Testes , Espectrometria de Massas em Tandem/métodos
4.
Ann R Coll Surg Engl ; 104(4): 242-248, 2022 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-34931532

RESUMO

BACKGROUND: Online resources are a fundamental source of healthcare information due to the increasing popularity of the internet. Ensuring accuracy and reliability of websites is crucial to improving patient education and enhancing patient outcomes. Inguinal hernia repair is the most commonly performed general surgical procedure worldwide. This study analyses the quality of online patient information about inguinal hernia repair using the Modified Ensuring Quality Information for Patients (EQIP) tool. METHODS: A systematic review of online information on inguinal hernia repair was conducted using four search terms: 'inguinal hernia', 'groin hernia', 'inguinal hernia repair' and 'inguinoscrotal hernia'. The top 100 websites for each term identified using Google were assessed using the modified EQIP tool (score 0-36). Websites for the paediatric population or intended for medical professional use were excluded from analysis. FINDINGS: A total of 142 websites were eligible for analysis, 52.8% originating from the UK. The median EQIP score for all websites was 17/36 (interquartile range 14-21). The median EQIP scores for content, identification and structure were 8/18, 2/8 and 8/12, respectively. Complications of inguinal hernia repair were included in 46.5% of websites, with only 9.2% providing complication rates and 14.1% providing information on how complications are handled. CONCLUSION: This study highlights that the current quality of online patient information on inguinal hernia repair is poor, with minimal information available on complications, hindering patients' ability to make informed decisions regarding their healthcare. To improve patient education, there is an immediate need for improved quality online resources to meet international standards.


Assuntos
Hérnia Inguinal , Criança , Hérnia Inguinal/cirurgia , Herniorrafia/métodos , Humanos , Reprodutibilidade dos Testes
5.
Bioanalysis ; 14(5): 279-287, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35188423

RESUMO

Background: Currently, no regulatory guidelines are available for parallelism assessment for LC-MS biomarker quantification. Spike recovery, standard addition and dilutional linearity are recommended with no mention of the implications of applying these approaches. Results: Here, using human urine creatinine, the authors compared spike recovery and standard addition in LC-MS biomarker quantification, and evaluated a new hybrid approach: parallelism QCs. The authors drew different conclusions based on which approach was used (<15% cutoff). Conclusion: Current recommended approaches may lead to different conclusions and are not equivalent and interchangeable. The authors recommend that standard addition should be the universal 'go-to' method for LC-MS biomarker parallelism assessment; parallelism QCs, which consider the total concentration as the theoretical value, can be used if the authentic matrix is limited.


Assuntos
Espectrometria de Massas em Tandem , Biomarcadores , Cromatografia Líquida/métodos , Creatinina , Humanos , Reprodutibilidade dos Testes , Espectrometria de Massas em Tandem/métodos
6.
Braz. j. oral sci ; 21: e226415, jan.-dez. 2022. tab
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1354995

RESUMO

Aim: Facial orthopaedic treatments based on the stimulation or restrictions of craniofacial bone growth are more effective when carried out during the pubertal growth spurt. The aim of this cross-sectional study was to evaluate the reproducibility of two cervical vertebrae methods (CVM) with manual tracing and direct visual inspection. Methods: A sample of 60 lateral cephalometric radiographs (10 of each of the 6 CVM stages) was randomly selected from 171 records. 5 orthodontists classified these radiographs according to the skeletal maturation stage in 2002 and 2005, and the application of both methods was conducted by direct visual inspection and evaluation through manual tracing. Results: The average reliability of the two methods determination and the two forms of evaluation was substantial. The direct visual inspection evaluation showed the highest reliability and agreement interexaminer values for both methods, as well as the intraexaminers evaluation. Conclusion: The reproducibility of CVM method was substantial, indicating its clinical use to determine the skeletal maturity and the ideal moment for treatment execution


Assuntos
Desenvolvimento Ósseo , Vértebras Cervicais , Reprodutibilidade dos Testes
7.
Braz. j. oral sci ; 21: e225337, jan.-dez. 2022. ilus
Artigo em Inglês | LILACS, BBO - Odontologia | ID: biblio-1366230

RESUMO

Aim: To elaborate and validate an instrument for Brazilian Portuguese speakers, to assess dentists' knowledge about care of patients with diabetes mellitus (Dental-Diabetes). Methods: Methodological study comprising four stages: a) Elaboration of instrument; b) Content validation (computing Content Validity Index - CVI) based on Expert Committee assessment; c) Pre-test with 30 dentists, followed by assessment of suggestions by Expert Committee; d) Psychometric validation through instrument application in a sample of 127 dentists by means of the web tool e-Surv. Cronbach's alpha and intraclass correlation coefficients were used to evaluate, respectively, internal consistency and reproducibility. Results: The final version of the instrument consists of 22 questions (7 on sociodemographic data and 15 querying dentists' knowledge) and those submitted for validation attained a CVI of 0.95 [95% CI 0.916-0,981], showing satisfactory internal consistency, with 0.794 Cronbach's alpha [95% CI 0.741-0.842] and an intraclass correlation coefficient of 0.799 [95% CI: 0.746-0.846] between the test and retest scores. Conclusions: Dental-Diabetes is a comprehensive instrument, culturally adequate and validated to assess dentists' knowledge about care of patients with diabetes


Assuntos
Humanos , Masculino , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Inquéritos e Questionários , Odontólogos , Diabetes Mellitus , Psicometria , Reprodutibilidade dos Testes
8.
BMC Womens Health ; 22(1): 207, 2022 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-35658863

RESUMO

BACKGROUND: Burden of breast cancer it continues to increase largely because of the aging and growth of the world population and assessment of quality of life is an important outcome measure to facilitate and improved care among breast cancer survivors, the aim of this study was to evaluate evidence of reliability, validity, and responsiveness of the Arabic version of the FACT-B + 4 questionnaire among participants with breast cancer related lymphedema (BCRL) in Saudi Arabia. METHODS: A prospective cross-sectional study, 51 participants with BCRL completed the Arabic version of FACT-B + 4. Internal consistency and test-retest-reliability were assessed using Cronbach's alpha, intraclass correlation-coefficient (ICC), and limits of agreement according to the Bland Altman method, respectively. The validation studies were carried-out by examining predefined hypotheses (n = 14) for both construct and Known-groups validity. To investigate the responsiveness, the Arabic version of FACT-B + 4 questionnaire was administrated preoperative and 4 weeks postoperatively among the participants with breast cancer (n = 34). RESULTS: The Cronbach alpha of the Arabic FACT-B + 4 total score was 0.90 and for the different subscales ranged from 0.74 to 0.89. Test-retest reliability for FACT-B + 4 total score and different subscales was found to be moderate to very strong (ICC 0.51-0.94). The Bland-Altman plot was adequate - 19.24 and 22.10 points. Measurement variability was acceptable for Arabic FACT-B + 4 and ARM subscale (standard error of measurement = 5.34, and 1.34). Moderate correlations (r = 0.42-0.62) were found between the subscale of the FACTB + 4 and the corresponding domains of SF-36. For known group validity, 72% (10 of 14) hypotheses on known group validity were accepted. CONCLUSION: FACT-B + 4 has adequate psychometric properties, thus making it useful for assessing QOL quality of life in Arabic speaking women with BCRL.


Assuntos
Linfedema Relacionado a Câncer de Mama , Neoplasias da Mama , Neoplasias da Mama/complicações , Estudos Transversais , Feminino , Humanos , Morbidade , Estudos Prospectivos , Psicometria , Qualidade de Vida , Reprodutibilidade dos Testes , Inquéritos e Questionários
9.
BMC Womens Health ; 22(1): 212, 2022 06 07.
Artigo em Inglês | MEDLINE | ID: mdl-35672816

RESUMO

BACKGROUND: Despite being a preventable disease, cervical cancer continues to be a public health concern, affecting mainly lower and middle-income countries. Therefore, in Bogotá a home-visit based program was instituted to increase screening uptake. However, around 40% of the visited women fail to attend their Pap smear test appointments. Using this program as a case study, this paper presents a methodology that combines machine learning methods, using routinely collected administrative data, with Champion's Health Belief Model to assess women's beliefs about cervical cancer screening. The aim is to improve the cost-effectiveness of behavioural interventions aiming to increase attendance for screening. The results presented here relate specifically to the case study, but the methodology is generic and can be applied in all low-income settings. METHODS: This is a cross-sectional study using two different datasets from the same population and a sequential modelling approach. To assess beliefs, we used a 37-item questionnaire to measure the constructs of the CHBM towards cervical cancer screening. Data were collected through a face-to-face survey (N = 1699). We examined instrument reliability using Cronbach's coefficient and performed a principal component analysis to assess construct validity. Then, Kruskal-Wallis and Dunn tests were conducted to analyse differences on the HBM scores, among patients with different poverty levels. Next, we used data retrieved from administrative health records (N = 23,370) to fit a LASSO regression model to predict individual no-show probabilities. Finally, we used the results of the CHBM in the LASSO model to improve its accuracy. RESULTS: Nine components were identified accounting for 57.7% of the variability of our data. Lower income patients were found to have a lower Health motivation score (p-value < 0.001), a higher Severity score (p-value < 0.001) and a higher Barriers score (p-value < 0.001). Additionally, patients between 25 and 30 years old and with higher poverty levels are less likely to attend their appointments (O.R 0.93 (CI: 0.83-0.98) and 0.74 (CI: 0.66-0.85), respectively). We also found a relationship between the CHBM scores and the patient attendance probability. Average AUROC score for our prediction model is 0.9. CONCLUSION: In the case of Bogotá, our results highlight the need to develop education campaigns to address misconceptions about the disease mortality and treatment (aiming at decreasing perceived severity), particularly among younger patients living in extreme poverty. Additionally, it is important to conduct an economic evaluation of screening options to strengthen the cervical cancer screening program (to reduce perceived barriers). More widely, our prediction approach has the potential to improve the cost-effectiveness of behavioural interventions to increase attendance for screening in developing countries where funding is limited.


Assuntos
Detecção Precoce de Câncer , Neoplasias do Colo do Útero , Adulto , Colômbia , Estudos Transversais , Feminino , Conhecimentos, Atitudes e Prática em Saúde , Humanos , Programas de Rastreamento , Probabilidade , Reprodutibilidade dos Testes , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/epidemiologia , Neoplasias do Colo do Útero/prevenção & controle
10.
Artigo em Inglês | MEDLINE | ID: mdl-35682440

RESUMO

Pap smear screening can detect cervical cancer early, but is underutilized. Motivational factors play a role in ensuring that women undergo Pap smear screening. This study was conducted to validate the adapted instrument, which was based on the protection motivation theory (PMT), into the Malay language to evaluate the motivational factors for Pap smear screening among women. The original 26-item PMT scale was developed based on seven constructs of the PMT framework. The adaptation involved translation by bilingual experts (n = 4), followed by synthesis (n = 6). Subsequently, we performed content validation (content validation index, CVI) among the health experts (n = 5) and face validation (face validation index, FVI) among women (n = 11). Reliability testing for internal consistency was determined via the confirmatory factor analysis (CFA) of women aged between 21 and 65 years (n = 150). One item was deleted based on the expert consensus, leaving a total of 25 items after the adaptation. The validation yielded a good CVI and FVI. Prior to CFA reliability testing, one item was deleted due to very low factor loading. The CFA indicated a good fit for 24 items. The factor loading (range: 0.45-0.98), average variance extracted (range: 0.44-0.90), and composite reliability (range: 0.69-0.97) indicated that the convergent validity for each construct was acceptable, except for the perceived vulnerability. However, the perceived vulnerability construct was accepted based on expert verification. We confirmed that the translation, cross-cultural, adaptation, and validation of the Malay-version PMT scale were valid and reliable. The scale contains 24 items that represent the seven constructs of the PMT framework.


Assuntos
Idioma , Motivação , Adulto , Idoso , Comparação Transcultural , Feminino , Humanos , Malásia , Pessoa de Meia-Idade , Teste de Papanicolaou , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários , Adulto Jovem
11.
Artigo em Inglês | MEDLINE | ID: mdl-35682479

RESUMO

Inappropriate prescribing, which encompasses the prescription of potentially inappropriate medications (PIMs) and potential prescribing omissions (PPOs), is a common problem for older people. The STOPP/START tool enables general practitioners, who are the main prescribers, to identify and reduce the incidence of PIMs and PPOs and appraise an older patient's prescribed drugs during the diagnosis process to improve the clinical care quality. This study aimed to translate and validate the STOPP/START screening tool to enable its use by Portuguese physicians. A translation-back translation method including the validation of the obtained Portuguese version was used. Intra- and inter-rater reliability and agreement analyses were used in the validation process. A dataset containing the information of 334 patients was analyzed by one GP twice within a 2-week interval, while a dataset containing the information of 205 patients was independently analyzed by three GPs. Intra-rater reliability assessment led to a Kappa coefficient (κ) of 0.70 (0.65-0.74) for the STOPP criteria and 0.60 (0.52-0.68) for the START criteria, considered to be substantial and moderate values, respectively. The results of the inter-rater reliability rating were almost perfect for all combinations of raters (κ > 0.93). The version of the STOPP/START criteria translated into Portuguese represents an improvement in managing the medications prescribed to the elderly. It provides clinicians with a screening tool for detecting potentially inappropriate prescribing in patients older than 65 years old that is reliable and easy to use.


Assuntos
Prescrição Inadequada , Lista de Medicamentos Potencialmente Inapropriados , Idoso , Humanos , Prescrição Inadequada/prevenção & controle , Portugal , Reprodutibilidade dos Testes , Traduções
12.
Artigo em Inglês | MEDLINE | ID: mdl-35682526

RESUMO

Type 2 diabetic peripheral neuropathy is known to cause balance limitations in static, dynamic, and functional activity. The Mini-BESTest, a shortened version of BESTest, was evolved to identify balance disorders within a short duration. No prior studies have yet been conducted to assess the usefulness of Mini-BESTest in the diagnosis of type 2 diabetic peripheral neuropathy. The current study aimed to examine the reliability and discriminant validity by comparing the Mini-BESTest scores between type 2 diabetic patients with peripheral neuropathy, divided into two 2 groups based on reporting scores of <4 and ≥4 in the MNSI questionnaire, respectively. Therefore, a cross-sectional study design was conducted including 44 type 2 diabetic patients (4 males and 40 females; aged 56.61 ± 7.7 years old). Diabetic peripheral neuropathy was diagnosed by physical assessment using the Michigan Neuropathy Screening Instrument (MNSI). Inter-rater (two physiotherapists) and Intra-rater (7-10 days) reliability of the Mini-BESTest were explored with intraclass correlation coefficients (ICC2,1) and (ICC3,1). The Mini-BESTest presented an excellent inter-rater reliability (ICC2,1= 0.95, 95% CI = 0.91-0.97, SEM = 0.61) and an excellent intra-rater reliability (ICC3,1 = 0.93, 95% CI = 0.87-0.96, SEM = 0.66), with confirmation by a good agreement presented by the Bland-Altman plots. The internal consistency measured with the overall Cronbach's alpha showed an acceptable agreement (0.73). The MDC was 2.16. In addition, the Mini-BESTest scores in the type 2 diabetic neuropathy patients reporting MNSI questionnaire scores <4 was found to be significantly higher when compared with those reporting scores ≥4. The Mini-BESTest can be used as a highly reliable and valid clinical application in the population with type 2 diabetic peripheral neuropathy.


Assuntos
Diabetes Mellitus Tipo 2 , Neuropatias Diabéticas , Estudos Transversais , Diabetes Mellitus Tipo 2/complicações , Neuropatias Diabéticas/diagnóstico , Avaliação da Deficiência , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Equilíbrio Postural , Psicometria , Reprodutibilidade dos Testes
13.
J Am Coll Surg ; 234(6): 989-998, 2022 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-35703787

RESUMO

BACKGROUND: The American College of Surgeons-Trauma Quality Improvement Program (ACS-TQIP) database is one of the most widely used databases for trauma research. We aimed to critically appraise the quality of the methodological reporting of ACS-TQIP studies. STUDY DESIGN: The ACS-TQIP bibliography was queried for all studies published between January 2018 and January 2021. The quality of data reporting was assessed using the Strengthening the Reporting of Observational studies in Epidemiology-Reporting of Studies Conducted Using Observational Routinely Collected Health Data (STROBE-RECORD) statement and the JAMA Surgery checklist. Three items from each tool were not applicable and thus excluded. The quality of reporting was compared between high- and low-impact factor (IF) journals (cutoff for high IF is >90th percentile of all surgical journals). RESULTS: A total of 118 eligible studies were included; 12 (10%) were published in high-IF journals. The median (interquartile range) number of criteria fulfilled was 5 (4-6) for the STROBE-RECORD statement (of 10 items) and 5 (5-6) for the JAMA Surgery checklist (of 7 items). Specifically, 73% of studies did not describe the patient population selection process, 61% did not address data cleaning or the implications of missing values, and 76% did not properly state inclusion/exclusion criteria and/or outcome variables. Studies published in high-IF journals had remarkably higher quality of reporting than those in low-IF journals. CONCLUSION: The methodological reporting quality of ACS-TQIP studies remains suboptimal. Future efforts should focus on improving adherence to standard reporting guidelines to mitigate potential bias and improve the reproducibility of published studies.


Assuntos
Lista de Checagem , Cirurgiões , Humanos , Melhoria de Qualidade , Reprodutibilidade dos Testes , Projetos de Pesquisa
14.
BMC Womens Health ; 22(1): 237, 2022 06 17.
Artigo em Inglês | MEDLINE | ID: mdl-35715768

RESUMO

BACKGROUND: This cross-sectional study evaluated women's attitudes toward the certification logos, labels, and advertisements for organic disposable sanitary pads (OSPs) and investigated what could be the main reason for them. Additionally, the present study examined whether a relationship could be found between these attitudes and OSPs purchasing behavior. METHODS: This study was conducted using a self-reported online survey of Korean adult women who have purchased OSPs. The study questionnaire had four sections, covering (1) characteristics of OSP purchasing behavior, (2) attitudes toward OSP certification logos, labels, and advertisements, (3) demand on government and companies for proper management, and (4) respondent's sociodemographic information. The Cronbach's alpha value of the questionnaire was 0.857. RESULTS: A total of 500 respondents completed the questionnaire. Overall, high reliability was found for the certification logos (3.73 ± 0.61), labels on the product packaging (3.71 ± 0.63), and advertisements of OSPs (3.41 ± 0.62). Respondents indicated that these had fairly positive effects on their decision-making regarding product reliability, product image, and their own purchasing behavior. The aspects most frequently affected from the informants were safety to human health. All attitudes toward OSP certification logos, labels, and advertisements that were evaluated in this study became more positive in the direction from non-buyers to occasional buyers and to habitual buyers (all P < 0.05). The most significant demand from the respondents for OSP companies and the government was to clearly indicate hazardous ingredients on the OSP packaging (42.0%) and to strengthen the sanctions for false advertising (37.8%), respectively. CONCLUSIONS: The results of this study clearly indicate the importance of using certification logos, labels, and advertisements in the OSP market. These results can be utilized by OSP companies to improve the effectiveness of their marketing strategies or by policy makers and certifying bodies to manage the informants properly in the OSP market.


Assuntos
Publicidade , Atitude , Adulto , Publicidade/métodos , Certificação , Estudos Transversais , Feminino , Humanos , Reprodutibilidade dos Testes
15.
Carbohydr Polym ; 292: 119645, 2022 Sep 15.
Artigo em Inglês | MEDLINE | ID: mdl-35725202

RESUMO

With the increasing interests in the fields of wearable devices, it is essential yet also challenging to develop electronic skin with customized functionalities, especially for harsh conditions. Herein, by using KCl as both anti-solvent for cellulose regeneration and ionic charge carrier in the cellulose gel network, cellulose/KCl/sorbitol organohydrogel (CKS) combining transparency (over 95% at 550 nm), stretchability (235%), high conductivity (3.88 S/m), and low temperature tolerance (-51.8 °C) was prepared. The CKS based electronic skin achieved simultaneous monitoring of object contact-separation/pressure, stretching/bending and thermal variation, with excellent reliability and stability even in harsh conditions, resembling the human skin with multiply functions. The CKS based electronic skin as efficient human-machine interface was also demonstrated. Furthermore, the CKS based triboelectric nanogenerator delivered a power density of 991 mW/m2, potential as mechanical energy harvesters for wearable devices. We believe the present work will inspire the development of cellulose based skin-like materials and contribute to the comprehensive utilization of naturel polymer in the field of smart devices.


Assuntos
Celulose , Hidrogéis/química , Sorbitol/química , Dispositivos Eletrônicos Vestíveis , Condutividade Elétrica , Humanos , Cloreto de Potássio/química , Reprodutibilidade dos Testes
16.
Prog Urol ; 32(7): 509-515, 2022 Jul.
Artigo em Francês | MEDLINE | ID: mdl-35644729

RESUMO

OBJECTIVES: Our work aimed to translate Ditrovie scale into standard Arabic and to verify its validity and reliability in the Tunisian population. MATERIALS: The translation-retro-translation method was the chosen translation method. The committee of experts analyzed these versions and elaborated a pre-final version The Arabic version obtained was conducted on a sample of 100 patients with idiopathic overactive bladder. The reliability of the scale was verified by Cronbach's alpha coefficient and intraclass correlation coefficient. RESULTS: The feasibility and acceptability of the scale was good. The Cronbach's alpha was 0.86. The reproducibility of our scale as well as of each domain were very good (intraclass correlation coefficient>0.9) with a mean of the differences centered and homogeneous in the Bland and Altman graph. CONCLUSION: The standard Arabic version of the Ditrovie scale is a reliable instrument with satisfactory psychometric properties allowing evaluation of quality of life of patients with idiopathic overactive bladder. LEVEL OF EVIDENCE: B.


Assuntos
Qualidade de Vida , Bexiga Urinária Hiperativa , Humanos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários , Traduções , Bexiga Urinária Hiperativa/diagnóstico
17.
Anal Methods ; 14(24): 2368-2375, 2022 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-35648434

RESUMO

In this paper, a novel analytical platform for the visual, sensitive and reliable analysis of mercury ions (Hg2+) is fabricated based on functionalized doped quantum dots. We synthesized a new specific nano-material, zinc dithiothreitol combined with graphene quantum dots (ZnNCs-NGQDs), by a simple and convenient method which, as an efficient luminophore, was then applied to construct an electrochemiluminescence (ECL) system for the first time. Under optimized conditions, the ECL sensor showed an excellent response for Hg2+ in the linear range of 1.0 mM to 10 pM, with a low detection limit of 3 pM. Moreover, the proposed method demonstrated satisfactory selectivity, stability and acceptable reproducibility for the detection of Hg2+. The recovery of tap water and lake water samples ranged from 96% to 105%, indicating the potential applicability of the proposed method for monitoring environmental water samples. Meanwhile, visual attempts for mercury ion detection by using doped quantum dots have also obtained satisfactory results. Importantly, our research revealed a viable method for improving the sensitivity and convenience of target studies in sensing fields derived from functional material design.


Assuntos
Mercúrio , Pontos Quânticos , Íons , Limite de Detecção , Mercúrio/análise , Reprodutibilidade dos Testes , Água
18.
Food Chem ; 393: 133319, 2022 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-35653991

RESUMO

Spirulina (Arthrospira platensis) proteins were extracted, digested, and analyzed by LC-ESI-FTMS/MS to find highly conserved peptides as markers of the microalga occurrence in foodstuffs. Putative markers were firstly chosen after in silico digestion of allergenic proteins, according to the FAO and WHO criteria, after assuring their presence in food supplements and in (un)processed foodsuffs. Parameters such as sensitivity, sequence size, and uniqueness for spirulina proteins were also evaluated. Three peptides belonging to C-phycocyanin beta subunit (P72508) were designated as qualifiers (ETYLALGTPGSSVAVGVGK and YVTYAVFAGDASVLEDR) and quantifier (ITSNASTIVSNAAR) marker peptides and used to validate the method for linearity, recovery, reproducibility, matrix effects, processing effects, LOD, and LOQ. The main aim was to determine spirulina in commercial foodstuffs like pasta, crackers, and homemade bread incurred with the microalga. The possible inclusion of the designated peptides in a standardized method, based on multiple reaction monitoring using a linear ion trap MS, was also demonstrated.


Assuntos
Microalgas , Spirulina , Alérgenos , Animais , Decapodiformes , Peptídeos , Reprodutibilidade dos Testes
19.
Comput Biol Med ; 146: 105669, 2022 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-35654625

RESUMO

GLS1 enzymes (Glutaminase C (GAC) and kidney-type Glutaminase (KGA)) are gaining prominence as a target for tumor treatment including lung, breast, kidney, prostate, and colorectal. To date, several medicinal chemistry studies are being conducted to develop new and effective inhibitors against GLS1 enzymes. Telaglenastat, a drug that targets the allosteric site of GLS1, has undergone clinical trials for the first time for the therapy of solid tumors and hematological malignancies. A comprehensive computational investigation is performed to get insights into the inhibition mechanism of the Telaglenastat. Some novel inhibitors are also proposed against GLS1 enzymes using the drug repurposing approach using 2D-fingerprinting virtual screening method against 2.4 million compounds, application of pharmacokinetics, Molecular Docking, and Molecular Dynamic (MD) Simulations. A TIP3P water box of 10 Å was defined to solvate both enzymes to improve MD simulation reliability. The dynamics results were validated further by the MMGB/PBSA binding free energy method, RDF, and AFD analysis. Results of these computational analysis revealed a stable binding affinity of Telaglenastat, as well as an FDA approved drug Astemizole (IC50 ∼ 0.9 nM) and a novel para position oriented methoxy group containing Chembridge compound (Chem-64284604) that provides an effective inhibitory action against GAC and KGA.


Assuntos
Glutaminase , Simulação de Dinâmica Molecular , Adipatos , Linhagem Celular Tumoral , Reposicionamento de Medicamentos , Inibidores Enzimáticos/farmacologia , Glutaminase/química , Glutaminase/metabolismo , Humanos , Masculino , Simulação de Acoplamento Molecular , Reprodutibilidade dos Testes , Succinatos
20.
Anal Methods ; 14(24): 2396-2404, 2022 Jun 23.
Artigo em Inglês | MEDLINE | ID: mdl-35666469

RESUMO

Electrode materials play a central role in assembling biosensors. In this work, a titanium dioxide nanoparticle loaded graphitized carbon nanofiber (TiO2/GNF) composite is prepared for the sensitive detection of organophosphorus pesticide residues (OPs). The TiO2/GNF composite with superior conductivity, catalytic activity and biocompatibility offers an extremely hydrophilic surface for the effective immobilization of acetylcholinesterase (AChE). Furthermore, the Ti atoms of TiO2/GNFs could coordinate with AChE to improve its stability, and TiO2 has a strong adsorption on OPs. The developed AChE/TiO2/GNFs/GCE biosensor showed a high affinity to acetylthiocholine chloride (ATCh) and could catalyze the hydrolysis of ATCh with an apparent Michaelis-Menten constant (Km) of 50 µM. The constructed AChE/TiO2/GNFs/GCE biosensor exhibits a wide detection linear range (1.0 × 10-13 M to 1.0 × 10-8 M) with a low detection limit (3.3 fM) for paraoxon determination (a model of OPs). In addition, the developed biosensor possesses remarkable anti-interference, acceptable reproducibility and good long-term stability, and is successfully used for the determination of OPs in lake water, providing a new strategy for the analysis of OPs in ecological environments.


Assuntos
Técnicas Biossensoriais , Grafite , Nanofibras , Nanopartículas , Praguicidas , Acetilcolinesterase/química , Carbono , Grafite/química , Nanopartículas/química , Compostos Organofosforados/análise , Paraoxon , Praguicidas/análise , Reprodutibilidade dos Testes , Titânio
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