Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 40
Filtrar
Mais filtros

Base de dados
País/Região como assunto
Tipo de documento
Intervalo de ano de publicação
1.
Med Teach ; : 1-11, 2024 Feb 05.
Artigo em Inglês | MEDLINE | ID: mdl-38316062

RESUMO

INTRODUCTION: Several models and frameworks have been developed in the past two decades to explain motivation regulation in different fields. However, a comprehensive framework that explains the dimensions of metamotivation in medical education is lacking. This study aims to address this gap by presenting a conceptual framework to understand metamotivation in medical education. METHOD: This study was conducted at Tehran University of Medical Sciences in 2022-2023. We applied Crawford's guidance on developing a conceptual framework via collecting data from three sources: experience, literature, and theory. We developed the initial draft of the conceptual framework by identifying gaps in existing models. A panel of experts reviewed the draft and provided feedback on the framework's generation, explanation, and argumentation. The final model was designed in the form of a graphical presentation. FINDINGS: The study's conceptual framework clearly distinguishes between motivational challenges and motivational problems, and outlines four phases that explain each phase's importance, components, and implementation process. The first phase focuses on promoting metamotivational knowledge among learners. In the second phase, learners face motivational challenges and aim to manage them optimally to prevent motivational problems. The third phase occurs when a motivational problem arises, and learners use motivational regulation strategies to resolve it. In the fourth and final phase, learners use psychological skills to stabilize and strengthen the metamotivational process. CONCLUSION: This study's conceptual framework focuses specifically on the context of medical education to provide guidance for future research and interventions on metamotivation. By presenting this framework, we aim to capture the attention of researchers toward the topic of metamotivation and encourage further exploration of its dimensions.

2.
Med Teach ; : 1-16, 2024 Apr 30.
Artigo em Inglês | MEDLINE | ID: mdl-38688502

RESUMO

INTRODUCTION: The field of medical education has seen a growing interest in lecture free curriculum. However, it comes with its own set of challenges and obstacles. In this article, we aim to identify the prerequisites, facilitators, challenges, and barriers of lecture-free curriculum in medical education and examine their interrelationships using interpretive structural modeling (ISM) technique. METHODS: In this mixed-method study initially, we performed a scoping review and semi-structured interviews and determined the main prerequisites, facilitators, challenges, and barriers of lecture-free curriculum in medical education using qualitative content analysis approach. The interrelationships among these components were investigated using ISM. Therefore, self-interactive structural matrices were formed, initial and final reachability matrices were achieved, and MICMAC analysis was conducted to classify the factors. RESULTS: Finally, two ISM models of prerequisites and facilitators with 27 factors in 10 levels and challenges and obstacles with 25 factors in eight levels were developed. Each of the models was divided into three parts: key, strategic, and dependent factors. 'Providing relevant evidence regarding lecture free curriculum' emerged as the most important prerequisite and facilitator, and 'insufficient support from the university' was identified as the most critical barrier and challenge. CONCLUSIONS: The study highlights the significant importance of lecture-free curriculum in medical education and provides insights into its prerequisites, facilitators, challenges, and barriers. The findings can be utilized by educational managers and decision-makers to implement necessary changes in the design and implementation of lecture-free in medical education, leading to more effective improvements in the quality and success of education.

3.
BMC Med Educ ; 24(1): 249, 2024 Mar 07.
Artigo em Inglês | MEDLINE | ID: mdl-38454450

RESUMO

We are excited to contribute our thoughts and insights to the discussion initiated by Gandomkar et al. in their article on the accreditation system in Iran (Gandomkar et al., BMC Med Educ 23:379, 2023). As individuals who have been directly involved in the process of meta-accreditation and possess a comprehensive understanding of the various stages of Undergraduate Medical Education (UME) accreditation in Iran, we would like to highlight additional points that were identified through a rigorous hermeneutic phenomenology process proposed by Gadamer (Gadamer, Truth and Method, 2013) and offer a complementary point of view to the previous work. By sharing our insights, we hope to contribute to the ongoing discourse surrounding UME accreditation.


Assuntos
Educação de Graduação em Medicina , Humanos , Irã (Geográfico) , Educação Médica Continuada , Acreditação , Faculdades de Medicina
4.
Med Teach ; 45(12): 1334-1342, 2023 12.
Artigo em Inglês | MEDLINE | ID: mdl-36958032

RESUMO

This AMEE guide seeks to improve the metamotivational knowledge of health professions educators as well as students. We present key models and frameworks of Metamotivation, identify several motivation regulation strategies and their measurement tools, and propose applications for health professions education (HPE). Since our work is grounded on evidence from the field, we include new findings about motivation regulation to encourage further exploration. Although much of the research on Metamotivation has been done outside the field of medical education, we share our six years of research experience and findings within the field to inspire others to replicate and expand.


Assuntos
Educação Médica , Motivação , Humanos , Ocupações em Saúde/educação , Estudantes , Inquéritos e Questionários
5.
BMC Med Educ ; 23(1): 108, 2023 Feb 13.
Artigo em Inglês | MEDLINE | ID: mdl-36782217

RESUMO

BACKGROUND: In metamotivational monitoring, students try to identify the declined motivational component in order to regulate their motivation. There is scarcity of evidence on which motivational components are targeted by the medical students when they use each motivational regulation strategies. This study aims were identifying motivational components in motivational regulation process, developing a measurement tool and, testing the predictive relationship between the motivational components and motivational regulation strategies. METHODS: This exploratory sequential design mixed method study is part of a project has been started from 2018 with medical students at Tehran University of Medical Science. First, in a qualitative study conducting a semi-structured in-depth interview, the motivational components were explored. The interviews continued until saturation of data. Then, in a psychometric study the validity and reliability evidence of questionnaire obtained. In the quantitative study, applying the convenience sampling method, 508 students completed the questionnaires. Predictive relation between the motivational regulation strategies and motivational components was assessed utilising Structural Equation Modelling. Path coefficients, T-Value, and R2 index were reported by SmartPLS software. RESULTS: In the Exploratory Factor Analysis of Motivational Components Questionnaire (MCQ), 6 factors were discovered that explained 74% of the total variance. All paths in seven models of SEM showed a T-Value above 1.96 that means there is a significant correlation between all strategies and components. In examining the predictive relationships, each of the four components of self-efficacy, intrinsic value, self-relevant value and promotion value were specifically predicted by two motivational regulation strategies. CONCLUSIONS: Evidence of validity and reliability of the MCQ indicates that this questionnaire can be used in medical education contexts. Health Profession Educators can improve the academic motivation of students by identifying one or more declined motivational component and teaching specific motivational regulation strategies. It is recommended to hold training courses on motivational regulation strategies for medical school faculty, study-skills advisors, and students.


Assuntos
Motivação , Estudantes de Medicina , Humanos , Reprodutibilidade dos Testes , Irã (Geográfico) , Instituições Acadêmicas
6.
Med Teach ; 43(10): 1186-1195, 2021 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-34038644

RESUMO

INTRODUCTION: Understanding medical students' motivational regulation strategies is particularly salient to monitor their quality and quantity of motivation. This study aims to develop and validate a questionnaire to measure metamotivational strategies in medical students. METHODS: A Metamotivational Strategies in Medical Students Questionnaire (MSMQ) was developed by using the seven steps presented in 'developing questionnaires for educational research: AMEE Guide No. 87'. First, in a systematic search, related articles extracted and nine instruments were identified. Then, in a qualitative study, the metamotivational strategies of medical students were explained. In the next step, the identified strategies were conceptually compared with previous studies, and the MSMQ items were developed. Finally, expert validation, cognitive interviews, exploratory factor analysis, and reliability analysis were conducted. RESULTS: The MSMQ consisted of 7 factors and 28 items. CVI >0.79 in terms of relevance, clarity, and simplicity. In exploratory factor analysis, seven subscales explained 67.5% of the variance. Cronbach's alpha = 0.89. ICC = 0.76 - 0.87. CONCLUSION: The MSMQ has reasonable psychometric properties, with adequate internal reliability and strong evidence of structural validity. However, further validation in other settings applying various psychometric methods is recommended.


Assuntos
Estudantes de Medicina , Análise Fatorial , Humanos , Psicometria , Reprodutibilidade dos Testes , Inquéritos e Questionários
7.
Med Teach ; 42(9): 962-969, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32644866

RESUMO

In this AMEE Guide we propose that instruction in health sciences education transform to 'lecture-free.' We present rationale for this proposal, guidance on approaches and strategies to achieve the goal, likely challenges, and what we consider the value-added outcomes. We are supported by a confluence of factors: advances in the science of learning and the learning of science and clinical reasoning, incontrovertible evidence that active and engaged learning strategies have better outcomes, current and emerging technology infrastructure in and out of the classroom, and best-practice instructional design.


Assuntos
Currículo , Aprendizagem , Educação em Saúde , Motivação , Tecnologia
8.
Teach Learn Med ; 30(1): 76-83, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-28753047

RESUMO

PROBLEM: Studies on leadership identity development through reflection with Team-Based Learning (TBL) in medical student education are rare. We assumed that reflection and feedback on the team leadership process would advance the progression through leadership identity development stages in medical students within the context of classes using TBL. INTERVENTION: This study is a quasi-experimental design with pretest-posttest control group. The pretest and posttest were reflection papers of medical students about their experience of leadership during their TBL sessions. In the intervention group, TBL and a team-based, guided reflection and feedback on the team leadership process were performed at the end of all TBL sessions. In the other group, only TBL was used. The Stata 12 software was used. Leadership Identity was treated both as a categorical and quantitative variable to control for differences in baseline and gender variables. Chi-square, t tests, and linear regression analysis were performed. CONTEXT: The population was a cohort of 2015-2016 medical students in a TBL setting at Tehran University of Medical Sciences, School of Medicine. Teams of four to seven students were formed by random sorting at the beginning of the academic year (intervention group n = 20 teams, control group n = 19 teams). OUTCOME: At baseline, most students in both groups were categorized in the Awareness and Exploration stage of leadership identity: 51 (52%) in the intervention group and 59 (55%) in the control group: uncorrected χ2(3) = 15.6, design-based F(2.83, 108) = 4.87, p = .003. In the posttest intervention group, 36 (36%) were in exploration, 33 (33%) were in L-identified, 20 (20%) were in Leadership Differentiated, and 10 (10%) were in the Generativity. None were in the Awareness or Integration stages. In the control group, 3 (20%) were in Awareness, 56 (53%) were in Exploration, 35 (33%) were in Leader Identified, 13 (12%) were in Leadership Differentiated. None were in the Generativity and Integration stages. Our hypothesis was supported by the data: uncorrected χ2(4) = 18.6, design-based F(3.77, 143) = 4.46, p = .002. The mean of the leadership identity in the pretest, intervention group equaled 1.93 (SD = 0.85) and the pretest, control group mean was 2.36 (SD = 0.86), p = .004. The mean of the posttest, intervention group was 3.04 (SD = 0.98) and posttest, control group mean was 2.54 (SD = 0.74), T = -4.00, design df = 38, p < .001, and adjusted on baseline and gender T = -8.97, design df = 38, p < .001. LESSONS LEARNED: Reflection and feedback on the team leadership process in TBL advances the progression in stages of leadership identity development in medical students. Although the TBL strategy itself could have an impact on leadership identity development, this study demonstrates that when a reflection and feedback on leadership intervention are added, there is much greater impact.


Assuntos
Educação Médica , Feedback Formativo , Liderança , Aprendizagem , Grupo Associado , Estudantes de Medicina/psicologia , Adulto , Feminino , Humanos , Masculino , Aprendizagem Baseada em Problemas
9.
Med Teach ; 40(5): 472-480, 2018 05.
Artigo em Inglês | MEDLINE | ID: mdl-29475391

RESUMO

PURPOSE: In this paper, we present the major curricular reform in MD program of Tehran University of Medical Sciences, the oldest and the largest medical university in Iran, initiated about a decade ago. MATERIALS AND METHODS: Following a comprehensive program evaluation, many of the basic challenges of the traditional curriculum were revealed, namely, lack of pre-defined competencies for graduates, over-reliance on teacher-centered teaching methods, over-emphasis on knowledge base in student assessments, and focusing solely on biomedical aspects of patient care. In 2010, a vision statement for reform was created and approved by the University Council. The new curriculum was launched in 2011. RESULTS: The changes included: revising the content of the courses, assimilating horizontal and vertical integration, emphasizing clinical skills, encouraging active involvement in patient management, providing more opportunity for supervised practice, integrating behavioral and psychosocial topics into the curriculum, incorporating interactive teaching methods, assessing students' higher levels of cognition, and strengthening workplace assessments. To evaluate the changes, data were continuously collected and analyzed from the beginning. CONCLUSIONS: Changing the curriculum of an MD program is a laborious task which should be planned and undertaken carefully and cautiously. It is an endless, yet invaluable and satisfying endeavor toward better future.


Assuntos
Currículo , Educação de Graduação em Medicina/organização & administração , Comitês Consultivos/organização & administração , Competência Clínica , Avaliação Educacional , Humanos , Irã (Geográfico) , Assistência Centrada no Paciente , Avaliação de Programas e Projetos de Saúde , Ensino/organização & administração
11.
Med Teach ; 39(4): 395-401, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28379087

RESUMO

CONTEXT: Little is known about best practices for teaching and learning leadership through Team-Based learning™ (TBL™) with medical students. We hypothesized that guided reflection and feedback would improve shared leadership and shared leadership capacity, and enhance team decision quality in TBL teams. We used the Kolb experiential learning theory as the theoretical framework. METHOD: The study was conducted at Tehran University of Medical Sciences. Three TBL sessions with 206 students (39 teams) participated in the study. Using a quasi-experimental design, one batch received guided reflection and feedback on their team leadership processes (n = 20 teams) and the other received only TBL (n = 19 teams). Observers measured shared leadership using a checklist. Shared leadership capacity was measured using a questionnaire. Scores on a team application exercise were used to assess quality of team decisions. RESULTS: Evidence did not support our first hypothesis that reflection and feedback enhance shared leadership in TBL teams. Percentages of teams displaying shared leadership did not differ between intervention and control groups in sessions 1 (p = 0.6), 2 (p = 1) or 3 (p = 1). The results did not support the second hypothesis. We found no difference in quality of decision making between the intervention and control groups for sessions 1 (p = 0.77), 2 (p = 0.23), or 3 (p = 0.07). The third hypothesis that the reflection and feedback would have an effect on shared leadership capacity was supported (T = -8.55, p > 0.001 adjusted on baseline; T = -8.55, p > 0.001 adjusted on gender). DISCUSSION AND CONCLUSION: We found that reflection and feedback improved shared leadership capacity but not shared leadership behaviors or team decision quality. We propose medical educators who apply TBL, should provide guided exercise in reflection and feedback so that students may better understand the benefits of working in teams as preparation for their future roles as leaders and members of health care teams.


Assuntos
Liderança , Aprendizagem , Aprendizagem Baseada em Problemas , Estudantes de Medicina/psicologia , Educação de Graduação em Medicina , Avaliação Educacional/métodos , Retroalimentação , Processos Grupais , Humanos , Irã (Geográfico)
12.
Med Teach ; 43(4): 480-481, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-33305972
13.
Endocr Res ; 39(3): 120-5, 2014.
Artigo em Inglês | MEDLINE | ID: mdl-24460047

RESUMO

AIMS: The KCNJ11 gene has a strong effect on glucose-stimulated insulin secretion. Common polymorphism KCNJ11 E23K has been reported to be associated with type 2 diabetes in various European-descent populations. However, there were inconsistent results in previous studies in Asian populations, and no study has been carried out in the Iranian population. We examined the contribution of KCNJ11 E23K variant in the susceptibility to type 2 diabetes in the Iranian population. METHODS: We undertook a population-based association study between type 2 diabetes and E23K mutation using 400 people with type 2 diabetes and 420 controls. Genotyping was performed using TaqMan technology on an ABI7300 system. RESULTS: No significant difference was observed in either genotype distribution (p = 0.71) or allele frequency (p = 0.88) between individuals with and without type 2 diabetes. After adjusting for the confounding effects of age, gender and body mass index (BMI), no significant effect of genotypes on type 2 diabetes was found regarding any genetic models tested (recessive, dominant or co-dominant models). Following subgroup analysis of individuals with and without diabetes based on BMI, a nominal significant association was observed between type 2 diabetes in the presence of obesity and E23K genotype in the recessive model (p = 0.03). CONCLUSION: The KCNJ11 E23K polymorphism is not associated with genetic susceptibility to type 2 diabetes in the Iranian population; however, it may play a role in disease progression in the presence of obesity.


Assuntos
Diabetes Mellitus Tipo 2/genética , Canais de Potássio Corretores do Fluxo de Internalização/genética , Adulto , Idoso , Povo Asiático/genética , Progressão da Doença , Feminino , Frequência do Gene , Predisposição Genética para Doença , Genótipo , Humanos , Insulina/metabolismo , Secreção de Insulina , Irã (Geográfico) , Masculino , Pessoa de Meia-Idade , Obesidade/complicações , Polimorfismo de Nucleotídeo Único , População Branca/genética
14.
Med Sci Educ ; 34(3): 543-550, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38887419

RESUMO

Background: Education in the health sciences is transitioning to a student-centered approach that has impacted all components of educational institutions: classroom design, faculty training, selection of learners and faculty. Activity: Using metaphor analyses, this study investigates the effects on instructor beliefs and values about teaching by having a series of professional development workshops in either a traditional lecture hall or in a collaborative/engaged learning-designed classroom. At the conclusion of the series, both sets of participants were invited to make a free-hand drawing of their "conception" of teaching and label the drawing that represents the conception. Drawings and metaphors were analyzed by non-study raters, and all metaphors were categorized into one of three domains: teacher-centered, learner-centered, learner-driven. Results: Faculty who completed the series inside a collaborative learning classroom perceived their roles primarily in the learner-centered domains 37 (59.67%), whereas those that completed it in the lecture hall perceived their roles as primarily teacher-centered 62 (84.93%). Discussion: The authors discuss the implications for faculty development during this transition.

15.
World Neurosurg ; 189: 90-107, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38823448

RESUMO

BACKGROUND: Ventriculostomy, one of the most common neurosurgical procedures, involves inserting a draining catheter into the brain's ventricular system to alleviate excessive cerebrospinal fluid accumulation. Traditionally, this procedure has relied on freehand techniques guided by anatomical landmarks, which have shown a high rate of misplacement. Recent advancements in virtual reality (VR) and augmented reality (AR) technologies have opened up new possibilities in the field. This comprehensive review aims to analyze the existing literature, examine the diverse applications of VR and AR in ventriculostomy procedures, address their limitations, and propose potential future directions. METHODS: A systematic search was conducted in Web of Science and PubMed databases to identify studies employing VR and AR technologies in ventriculostomy procedures. Review papers, non-English records, studies unrelated to VR/AR technologies in ventriculostomy, and supplementary documents were excluded. In total 29 papers were included in the review. RESULTS: The development of various VR and AR systems aimed at enhancing the ventriculostomy procedure are categorized according to the Data, Visualization and View taxonomy. The study investigates the data utilized by these systems, the visualizations employed, and the virtual or augmented environments created. Furthermore, the surgical scenarios and applications of each method, as well as the validation and evaluation metrics used, are discussed. DISCUSSION: The review delves into the fundamental challenges encountered in the implementation of VR and AR systems in ventriculostomy. Additionally, potential future directions and areas for improvement are proposed, addressing the identified limitations and paving the way for further advancements in the field.

16.
ACS Appl Mater Interfaces ; 16(20): 25652-25664, 2024 May 22.
Artigo em Inglês | MEDLINE | ID: mdl-38739871

RESUMO

Aqueous core-shell structures can serve as an efficient approach that allows cells to generate 3D spheroids with in vivo-like cell-to-cell contacts. Here, a novel strategy for fabricating liquid-core-shell capsules is proposed by inverse gelation of alginate (ALG) and layer-by-layer (LbL) coating. We hypothesized that the unique properties of polyethylenimine (PEI) could be utilized to overcome the low structural stability and the limited cell recognition motifs of ALG. In the next step, alginate dialdehyde (ADA) enabled the Schiff-base reaction with free amine groups of PEI to reduce its possible toxic effects. Scanning electron microscopy and light microscopy images proved the formation of spherical hollow capsules with outer diameters of 3.0 ± 0.1 mm for ALG, 3.2 ± 0.1 mm for ALG/PEI, and 4.0 ± 0.2 mm for ALG/PEI/ADA capsules. The effective modulus increased by 3-fold and 5-fold when comparing ALG/PEI/ADA and ALG/PEI to ALG capsules, respectively. Moreover, PEI-coated capsules showed potential antibacterial properties against both Staphylococcus aureus and Escherichia coli, with an apparent inhibition zone. The cell viability results showed that all capsules were cytocompatible (above 75.5%). Cells could proliferate and form spheroids when encapsulated within the ALG/PEI/ADA capsules. Monitoring the spheroid thickness over 5 days of incubation indicated an increasing trend from 39.50 µm after 1 day to 66.86 µm after 5 days. The proposed encapsulation protocol represents a new in vitro platform for developing 3D cell cultivation and can be adapted to fulfill the requirements of various biomedical applications.


Assuntos
Alginatos , Antibacterianos , Cápsulas , Escherichia coli , Polietilenoimina , Staphylococcus aureus , Alginatos/química , Polietilenoimina/química , Staphylococcus aureus/efeitos dos fármacos , Escherichia coli/efeitos dos fármacos , Cápsulas/química , Antibacterianos/farmacologia , Antibacterianos/química , Humanos , Sobrevivência Celular/efeitos dos fármacos , Animais
17.
J Glob Antimicrob Resist ; 36: 151-159, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38154746

RESUMO

OBJECTIVES: Plasmid genes, termed mobile colistin resistance-1 (mcr-1) and mobile colistin resistance-2 (mcr-2), are associated with resistance to colistin in Escherichia coli (E. coli). These mcr genes result in a range of protein modifications contributing to colistin resistance. This study aims to discern the proteomic characteristics of E. coli-carrying mcr-1 and mcr-2 genes. Furthermore, it evaluates the expression levels of various proteins under different conditions (with and without colistin). METHODS: Plasmid extraction was performed using an alkaline lysis-based plasmid extraction kit, whereas polymerase chain reaction was used to detect the presence of mcr-1 and mcr-2 plasmids. The E. coli DH5α strain served as the competent cell for accepting and transforming mcr-1 and mcr-2 plasmids. We assessed proteomic alterations in the E. coli DH5α strain both with and without colistin in the growth medium. Proteomic data were analysed using mass spectrometry. RESULTS: The findings revealed significant protein changes in the E. coli DH5α strain following cloning of mcr-1 and mcr-2 plasmids. Of the 20 proteins in the DH5α strain, expression in 8 was suppressed following transformation. In the presence of colistin in the culture medium, 39 new proteins were expressed following transformation with mcr-1 and mcr-2 plasmids. The proteins with altered expression play various roles. CONCLUSION: The results of this study highlight numerous protein alterations in E. coli resulting from mcr-1 and mcr-2-mediated resistance to colistin. This understanding can shed light on the resistance mechanism. Additionally, the proteomic variations observed in the presence and absence of colistin might indicate potential adverse effects of indiscriminate antibiotic exposure on treatment efficacy and heightened pathogenicity of microorganisms.


Assuntos
Colistina , Proteínas de Escherichia coli , Colistina/farmacologia , Escherichia coli/genética , Escherichia coli/metabolismo , Proteoma , Proteômica , Proteínas de Escherichia coli/genética , Proteínas de Escherichia coli/metabolismo , Farmacorresistência Bacteriana/genética , Antibacterianos/farmacologia , Clonagem Molecular
18.
J Cosmet Dermatol ; 22(4): 1238-1244, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-36606390

RESUMO

BACKGROUND: Melasma is a hyperpigmentary disorder causing cosmetic disfigurement. We aimed to compare the efficacy and safety of tranexamic acid (TXA) microinjections with TXA mesoneedling for facial melasma. METHODS: This randomized assessor-blind split-face controlled trial included patients with symmetric facial melasma. One side of the face received TXA (100 mg/ml) mesoneedling and the other side intradermal TXA microinjections. The interventions were repeated three times with 4-week intervals (weeks 0, 4, and 8). The primary outcome was improvement in modified Melasma Area and Severity Index (mMASI) 4 weeks after the final treatment session. Secondary outcomes were complications and patient satisfaction with the treatments evaluated by a visual analog scale (VAS). RESULTS: All 27 patients included in the study were female (mean age: 44.22 ± 8.39 years). Both groups were comparable in terms of mMASI scores before and after treatment (standardized mean difference [SMD] = 0.32, 95% confidence interval [CI] -0.22; 0.85, p = 0.248 and SMD = -0.13, 95% CI -0.66; 0.40, p = 0.633, respectively). The mMASI score change from baseline was not different (SMD = -0.39, 95% CI -0.93; 0.15, p = 0.157). However, patient satisfaction was significantly higher with TXA mesoneedling (SMD = 0.77, 95% CI 0.21; 1.32, p = 0.007). Post-inflammatory hyperpigmentation occurred in one patient in the TXA mesoneedling group. Erythema, scaling, and edema were significantly higher with TXA mesoneedling (p < 0.001). CONCLUSIONS: TXA mesoneedling was comparable with TXA microinjection in the treatment of facial melasma, while patient satisfaction was significantly higher with TXA mesoneedling; however, the high frequency of complications occurring with this treatment should be taken into account.


Assuntos
Hiperpigmentação , Melanose , Ácido Tranexâmico , Humanos , Feminino , Adulto , Pessoa de Meia-Idade , Masculino , Microinjeções , Resultado do Tratamento , Melanose/tratamento farmacológico
19.
Curr J Neurol ; 22(4): 231-237, 2023 Oct 07.
Artigo em Inglês | MEDLINE | ID: mdl-38425356

RESUMO

Background: Duchenne muscular dystrophy (DMD) and Becker muscular dystrophy (BMD) are inherited X-linked disorders resulting from alterations in the dystrophin gene. Genotype-phenotype matching studies have revealed a link between disease severity, the amount of muscle dystrophin, and the extent of mutation/deletion on the dystrophin gene. This study aimed to assess the relationship between genetic alterations in the dystrophin gene and the clinical status of patients with dystrophinopathies among the Iranian population. Methods: This cross-sectional study examined 54 patients with muscle weakness caused by abnormalities in the dystrophin gene at a hospital affiliated to Isfahan University of Medical Sciences, Isfahan, Iran, in 2021. The participants' demographic information, including age, family history of muscle dystrophies, and family history of other medical diseases as well as the type of muscular dystrophy were recorded. Furthermore, the number and region of deleted exons based on dystrophy types were also evaluated using multiplex ligation-dependent probe amplification (MLPA). The patients' gaits were also assessed as using a wheelchair, the presence of waddling gaits, or toe gaits. The patients' clinical status and the coexistence of pulmonary, bulbar, and mental conditions were also examined and compared between the two groups of dystrophinopathies. Results: In this study, 54 patients with dystrophinopathy with the mean age of 16.63 ± 12.10 years were evaluated, of whom 22 (40.7%) and 30 (55.6%) patients were classified as BMD and DMD, respectively. The most affected regions with deleted exons were exons 45-47 (n = 5) and 45-48 (n = 4) in patients with BMD, while exons 45, 48-52, 51-55, and 53 (2 cases per exon) were the most common affected exons in patients with DMD. Further analyses revealed that deletions in exons 45-47 and 51-55 were significantly associated with older and younger ages at the onset of becoming wheelchair-bound in patients with dystrophy, respectively. The hotspot range in both BMD and DMD was within exons 45-55 (n = 15 for each group); 63% of the patients had alterations on the dystrophin gene within this range [30 patients (68.18%) in the BMD group, 15 patients (53.57%) in the DMD group]. Conclusion: Exon deletion was the most common genetic alteration in patients with dystrophinopathies. No significant difference was observed between DMD and BMD regarding the number of deleted exons. Deletions in exons 45-47 and 51-55 were linked to later and earlier onset of becoming wheelchair-bound, respectively.

20.
Adv Biomed Res ; 12: 136, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37434927

RESUMO

Background: We aimed to investigate the usefulness of intracranial arterial pulsatility index to assess the prognosis of lacunar infarcts. Materials and Methods: Forty-nine patients with confirmed acute lacunar infarct were enrolled in the study. A transcranial color-coded sonography was performed to assess the pulsatility index of bilateral middle cerebral, posterior cerebral, vertebral, and proximal internal carotid arteries. Patients' clinical status was assessed using a modified Rankin scale. Spearman correlation was used for reporting the relation between quantitative data. Statistical significance was defined as a two-tail p-value of less than 0.05. Results: The mean age ± standard deviation was 64.1 ± 9.07 years old, and 57.1% of the patients were male. Upon discharge, only 8.2% of the patients were ranked as 0 on the modified Rankin scale; however, after a 6-month follow-up period, this number increased to 49%. There were no significant differences between the left and right pulsatility index measurements in any of the assessed arteries. Patients with vertebral artery pulsatility indexes >1 on their primary assessment had significantly worse outcomes during the first, third, and sixth months follow-up (all r > 0.3, p-values < 0.01). Pulsatility indexes from other arteries did not predict the prognosis. Conclusion: Sonography-assisted assessment of the vertebral artery blood flow during the early stage of lacunar infarct provides a reliable reference for prognosis estimation.

SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA