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1.
BMC Health Serv Res ; 23(1): 852, 2023 Aug 11.
Artigo em Inglês | MEDLINE | ID: mdl-37568157

RESUMO

BACKGROUND: Focusing on patients' perceived values is essential for patient-centered health care. Only by identifying the patient's preferred values can we better meet their needs and provide them with valuable medical services. This study aimed to construct and validate a research model to obtain an overall quantification of patient value during outpatient encounters. METHODS: The development of the research model was based on the reviewed literature, and an initial theoretical framework was formed by an expert panel discussion. A scale questionnaire for all the items was adapted from previous research related to patient value, verified using a presurvey, and thus used for data collection for this study. The structural equation model was used to determine and evaluate the research model of the values patients perceived during outpatient encounters. RESULTS: 572 eligible respondents who completed outpatient visits from a typical public hospital in China participated in this study from November 2020 to February 2021. We constructed the patient perceived value (PPV) model to identify core values, which includes eight dimensions and 29 items in terms of functional value (installation, efficiency, price, service quality), emotional value (interactive, control), and social value (accessibility, image) from two subgroups of patient value outside and in the outpatient visit process. Cronbach's alpha for the whole model was 0.950. The confirmatory factor analysis showed that the PPV model fits well, with a correlation of 0.83 between the two subgroups. CONCLUSION: It is essential to recognize the values based on patients' perceptions and experiences throughout the entire visit process. Our findings offer targeted insights for healthcare administrators, enabling them to holistically optimize outpatient service processes and continually enhance the quality of outpatient medical services from the patient's perspective.


Assuntos
Hospitais Públicos , Pacientes Ambulatoriais , Humanos , Pacientes Ambulatoriais/psicologia , Assistência Ambulatorial , Pesquisa Empírica , China , Satisfação do Paciente , Inquéritos e Questionários
2.
J Relig Health ; 62(3): 1933-1949, 2023 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-36149613

RESUMO

This study aimed to explore the spiritual pain concept in the Iranian-Islamic context using a hybrid research model during 2020-2021. During the first phase, international and Iranian-Islamic literature was systematically searched and reviewed. During the second phase, the researchers referred to oncology wards, palliative care centers, and intensive care units and conducted unstructured interviews with 19 dying patients. In the third phase, attributes, and final analysis of spiritual pain was extracted from the first phase, and following the second phase, the definition of spiritual pain was finalized. The results showed that spiritual pain is a type of unique transcendental pain in the context of a continuum, rooted in human nature. At the one end of the continuum, there is the pain of deprivation from worldly pleasures (oneself, the family, and others). At the other end, there is the pain of breaking away from and striving to return to one's origin (God). Exploring spiritual pain in the Iranian-Islamic context can help develop tools and clinical guidelines and plan for the presence of specialists at the bedside to relieve this pain.


Assuntos
Cuidados Paliativos , Espiritualidade , Humanos , Morte , Irã (Geográfico) , Dor
3.
Artif Organs ; 46(11): 2179-2190, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-35730930

RESUMO

BACKGROUND: Ex vivo lung perfusion (EVLP), is a platform that allows simultaneous testing and treatment of the lungs. However, use of EVLP is costly and requires access to lab animals and accompanying facilities. To increase the use of EVLP for research, we developed a method to perform EVLP using abattoir procured lungs. Furthermore, we were also able to significantly decrease costs. METHODS: Six pair of lungs were procured from abattoir sheep. The lungs were then flushed and stored in ice for 3 h. A low-flow (20% of cardiac output) approach, a tidal volume of 6 ml/kg bodyweight and total perfusion time of 3 h were chosen. Perfusion fluids and circuits were self-made. Lung biopsies, perfusate collection, respiratory values, circulatory pressures were recorded and hourly blood gas analyses were performed. RESULTS: Mean pO2 remained stable from 60 min (49.3 ± 7.1 kPa) to 180 min (51.5 kPa ± 8.0), p = 0.66. Pulmonary artery pressure remained ≤15 mm Hg and the left atrial pressure remained between 3 and 5 mm Hg and peak respiratory pressures ≤20 cmH2 O. Lactate dehydrogenase increased from start (96.3 ± 56.4 U/L) to the end of perfusion (315.8 ± 85.0 U/L), p < 0.05. No difference was observed in ATP between procurement and post-EVLP, 129.7 ± 37.4 µmol/g protein to 132.0 ± 23.4 µmol/g, p = 0.92. CONCLUSIONS: Sheep lungs, acquired from an abattoir, can be ex vivo perfused under similar conditions as lab animal lungs with similar results regarding e.g., oxygenation and ATP restoration. Furthermore, costs can be significantly reduced by making use of this abattoir model. By increasing accessibility and lowering costs for experiments using lung perfusion, more results may be achieved in the field of lung diseases.


Assuntos
Transplante de Pulmão , Ovinos , Animais , Transplante de Pulmão/métodos , Matadouros , Pulmão/irrigação sanguínea , Perfusão/métodos , Modelos Animais de Doenças , Trifosfato de Adenosina
4.
Proc Natl Acad Sci U S A ; 115(50): 12590-12594, 2018 12 11.
Artigo em Inglês | MEDLINE | ID: mdl-30530681

RESUMO

A 70-year-old simmering debate has erupted into vigorous battles over the most effective ways to conduct research. Well-established beliefs are being forcefully challenged by advocates of new research models. While there can be no final resolution to this battle, this paper offers the Twin-Win Model to guide teams of researchers, academic leaders, business managers, and government funding policymakers. The Twin-Win Model favors a problem-oriented approach to research, which encourages formation of teams to pursue the dual goals of breakthrough theories in published papers and validated solutions that are ready for widespread dissemination. The raised expectations of simultaneously pursuing foundational discoveries and powerful innovations are a step beyond traditional approaches that advocate basic research first. Evidence from citation analysis and researcher interviews suggests that simultaneous pursuit of both goals raises the chance of twin-win success.

5.
Molecules ; 26(22)2021 Nov 10.
Artigo em Inglês | MEDLINE | ID: mdl-34833885

RESUMO

Gelatin, a denatured form of collagen, is an attractive biomaterial for biotechnology. In particular, gelatin particles have been noted due to their attractive properties as drug carriers. The drug release from gelatin particles can be easily controlled by the crosslinking degree of gelatin molecule, responding to the purpose of the research. The gelatin particles capable of drug release are effective in wound healing, drug screening models. For example, a sustained release of growth factors for tissue regeneration at the injured sites can heal a wound. In the case of the drug screening model, a tissue-like model composed of cells with high activity by the sustained release of drug or growth factor provides reliable results of drug effects. Gelatin particles are effective in drug delivery and the culture of spheroids or cell sheets because the particles prevent hypoxia-derived cell death. This review introduces recent research on gelatin microparticles-based strategies for regenerative therapy and drug screening models.


Assuntos
Sistemas de Liberação de Medicamentos/métodos , Gelatina/uso terapêutico , Regeneração Tecidual Guiada/métodos , Animais , Materiais Biocompatíveis , Portadores de Fármacos/química , Gelatina/química , Gelatina/metabolismo , Humanos , Engenharia Tecidual/métodos , Cicatrização/efeitos dos fármacos
6.
Am J Community Psychol ; 67(1-2): 166-178, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-32511777

RESUMO

In jurisdictions throughout the United States, thousands of sexual assault kits (SAKs; also known as a "rape kits") have not been submitted by the police for forensic DNA testing. DNA evidence may be helpful to sexual assault investigations and prosecutions by identifying perpetrators, revealing serial offenders through DNA matches across cases, and exonerating those who have been wrongly accused. This paper describes a longitudinal action research project conducted in Detroit, Michigan after that city discovered approximately 11,000 untested sexual assault kits in a police department storage facility. We conducted a root cause analysis to examine individual, organizational, community, and societal factors that contributed to the development of the rape kit backlog in Detroit. Based on those findings, we implemented and evaluated structural changes to increase staffing, promote kit testing, and retrain police and prosecutors so that cases could be reopened for investigation and prosecution. As we conducted this work, we also studied how this action research project impacted the Detroit criminal justice system. Participating in this project changed stakeholders' attitudes about the utility of research to address community problems, the usefulness of DNA evidence in sexual assault cases, and the impact of trauma on survivors. The results led to new protocols for SAK testing and police investigations, and new state legislation mandating SAK forensic DNA testing.


Assuntos
Vítimas de Crime , Estupro , Delitos Sexuais , Direito Penal , Pesquisa sobre Serviços de Saúde , Humanos , Aplicação da Lei , Estados Unidos
7.
Nurse Res ; 24(1): 15-9, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-27641703

RESUMO

Background Conceptual frameworks are important to ensure a clear underpinning research philosophy. Further, the use of conceptual frameworks can support structured research processes. Aim To present a partnership model for a reflective narrative for researcher and participant. Discussion This paper positions the underpinning philosophical framework of the model in social constructionism (the idea that jointly constructed understandings form the basis for shared assumptions) and narrative enquiry. The model has five stages - study design, invitation to share a research space and partnership, a metaphorical research space, building a community story, and reading the community story to others. Core principles of the partnership model are continual reflection by the researcher, potential reflections by participants, reciprocal sharing, and partnership in research. Conclusion A 'trajectory of self' for both participants and researchers can be enhanced within reflective partnerships. Implications for practice This model can be applied to studies that use narrative enquiry and are seeking a humanistic approach with participant engagement.


Assuntos
Modelos de Enfermagem , Narração , Papel do Profissional de Enfermagem/psicologia , Pesquisa em Enfermagem , Relações Pesquisador-Sujeito , Comportamento Cooperativo , Humanos , Prática Associada , Seleção de Pacientes , Filosofia em Enfermagem , Projetos de Pesquisa , Confiança
8.
Zhongguo Zhong Yao Za Zhi ; 41(5): 769-775, 2016 Mar.
Artigo em Zh | MEDLINE | ID: mdl-28875626

RESUMO

As an important part of the market commodity circulation, the standard grade of Chinese traditional medicine commodity is very important to restrict the market order and guarantee the quality of the medicinal material. The State Council issuing the "protection and development of Chinese herbal medicine (2015-2020)" also make clear that the important task of improving the circulation of Chinese herbal medicine industry norms and the commodity specification standard of common traditional Chinese medicinal materials. However, as a large class of Chinese herbal medicines, the standard grade of the radix is more confused in the market circulation, and lack of a more reasonable study model in the development of the standard. Thus, this paper summarizes the research background, present situation and problems, and several key points of the commodity specification and grade standard in radix herbs. Then, the research model is introduced as an example of Pseudostellariae Radix, so as to provide technical support and reference for formulating commodity specifications and grades standard in other radix traditional Chinese medicinal materials.


Assuntos
Medicamentos de Ervas Chinesas/normas , Materia Medica/normas , Medicina Tradicional Chinesa/normas , Medicamentos de Ervas Chinesas/química , Medicamentos de Ervas Chinesas/economia , Humanos , Materia Medica/química , Materia Medica/economia , Medicina Tradicional Chinesa/economia , Modelos Teóricos , Controle de Qualidade
9.
J Pediatr Psychol ; 40(10): 1034-40, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-26050244

RESUMO

OBJECTIVE: To present a model of translational research for behavioral science that communicates the role of behavioral research at each phase of translation. METHODS: A task force identified gaps in knowledge regarding behavioral translational research processes and made recommendations regarding advancement of knowledge. RESULTS: A comprehensive model of translational behavioral research was developed. This model represents T1, T2, and T3 research activities, as well as Phase 1, 2, 3, and 4 clinical trials. Clinical illustrations of translational processes are also offered as support for the model. CONCLUSIONS: Behavioral science has struggled with defining a translational research model that effectively articulates each stage of translation and complements biomedical research. Our model defines key activities at each phase of translation from basic discovery to dissemination/implementation. This should be a starting point for communicating the role of behavioral science in translational research and a catalyst for better integration of biomedical and behavioral research.


Assuntos
Ciências do Comportamento , Pesquisa Translacional Biomédica , Pesquisa Comportamental , Humanos
10.
JMIR Form Res ; 8: e58549, 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38959047

RESUMO

BACKGROUND: Developing a digital educational application focused on sexual health education necessitates a framework that integrates cultural considerations effectively. Drawing from previous research, we identified the problem and essential requirements to incorporate cultural insights into the development of a solution. OBJECTIVE: This study aims to explore the Solution Room of the self-established Intercultural Research Model, with a focus on creating a reusable framework for developing and implementing a widely accessible digital educational tool for sexual health. The study centers on advancing from a low-fidelity prototype (She!Masomo) to a high-fidelity prototype (We!Masomo), while evaluating its system usability through differentiation. This research contributes to the pursuit of Sustainable Development Goals 3, 4, and 5. METHODS: The research methodology is anchored in the Solution Room of the self-expanded Intercultural Research Model, which integrates cultural considerations. It uses a multimethod, user-centered design thinking approach, focusing on extensive human involvement for the open web-based application. This includes gathering self-assessed textual user feedback, conducting a System Usability Scale (SUS) analysis, and conducting 4 face-to-face semistructured expert interviews, following COREQ (Consolidated Criteria for Reporting Qualitative Research) guidelines. RESULTS: Based on the identified limitations of the low-fidelity prototype, She!Masomo (SUS score 67), which were highlighted through textual user feedback (63/77) and prototype feature comparisons, iterative development and improvement were implemented. This process led to the creation of an enhanced high-fidelity prototype (We!Masomo). The improved effectiveness of the enhanced prototype was evaluated using the qualitative SUS analysis (82/90), resulting in a favorable score of 77.3, compared with the previous SUS score of 67 for the low-fidelity prototype. Highlighting the importance of accessible digital educational tools, this study conducted 4 expert interviews (4/4) and reported e-survey results following the CHERRIES (Checklist for Reporting Results of Internet E-Surveys) guideline. The digital educational platform, We!Masomo, is specifically designed to promote universal and inclusive free access to information. Therefore, the developed high-fidelity prototype was implemented in Kenya. CONCLUSIONS: The primary outcome of this research provides a comprehensive exploration of utilizing a case study methodology to advance the development of digital educational web tools, particularly focusing on cultural sensitivity and sensitive educational subjects. It offers critical insights for effectively introducing such tools in regions with limited resources. Nonetheless, it is crucial to emphasize that the findings underscore the importance of integrating culture-specific components during the design phase. This highlights the necessity of conducting a thorough requirement engineering analysis and developing a low-fidelity prototype, followed by an SUS analysis. These measures are particularly critical when disseminating sensitive information, such as sexual health, through digital platforms. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.1186/s12905-023-02839-6.

11.
Animals (Basel) ; 14(4)2024 Feb 18.
Artigo em Inglês | MEDLINE | ID: mdl-38396619

RESUMO

BACKGROUND: Research model selection decisions in basic and preclinical biomedical research have not yet been the subject of an ethical investigation. Therefore, this paper aims, (1) to identify a spectrum of reasons for choosing between animal and alternative research models (e.g., based on in vitro or in silico models) and (2) provides an ethical analysis of the selected reasons. METHODS: In total, 13 researchers were interviewed; the interviews were analyzed qualitatively. The ethical analysis was based on the principlism approach and a value judgement model. RESULTS: This paper presents 66 reasons underlying the choice of researchers using animal (27 reasons) or alternative models (39). Most of the reasons were assigned to the work environment (29) and scientific standards (22). Other reasons were assigned to personal attitudes (11) and animal welfare (4). Qualitative relevant normative differences are presented in the ethical analysis. Even if few reasons can be rejected outright from an ethical point of view, there are good reasons to give some more weight than others. CONCLUSIONS: The spectrum of reasons and their ethical assessment provide a framework for reflection for researchers who may have to choose between animal models and (investing in) alternatives. This can help to reflect on and ethically justify decisions.

12.
Virus Res ; 329: 199068, 2023 05.
Artigo em Inglês | MEDLINE | ID: mdl-36854360

RESUMO

Human papilloma viruses (HPV), that are causative for most squamous cell cervical cancers (SCC), have a simple structure with only a few genes (six early and two late genes). Two of the early HPV genes (E6 and E7) are capable of transforming normal squamous epithelium into cancer. In the last 10 years, a controversial discussion arose as to which cells are primarily involved in cervical carcinogenesis. Virologists traditionally use a research model of stratified squamous epithelium, a permissive environment for completion of a full HPV-life cycle. Basic insights on HPV tropism, HPV life cycle, HPV-uptake, HPV-replication, HPV-gene expression were gained from this model. Stratified squamous epithelium, however, is a low-risk area for SCC. Most SCC develop in an area of endocervical columnar epithelium that undergoes squamous metaplasia. SCC arise after infection of immature squamous metaplasia, proliferating reserve cells/reserve cell hyperplasia and reserve cells of the endocervical columnar epithelium. Study models investigating this pathway of carcinogenesis do not exist and therapeutic consequences deduced from this knowledge are lacking. This review describes in detail cervical carcinogenesis after HPV infection of subcolumnar reserve cells and discusses new intervention strategies for patients. The WHO-launched global strategy to eliminate HPV-associated cervical cancer builds primarily on prophylactic vaccination, screening and treatment. New insights in cervical pathogenesis, may assist in reaching this ambitious WHO goal.


Assuntos
Carcinoma de Células Escamosas , Infecções por Papillomavirus , Neoplasias do Colo do Útero , Feminino , Humanos , Neoplasias do Colo do Útero/prevenção & controle , Neoplasias do Colo do Útero/patologia , Papillomavirus Humano , Infecções por Papillomavirus/complicações , Infecções por Papillomavirus/prevenção & controle , Papillomaviridae/genética , Células Epiteliais/patologia , Carcinoma de Células Escamosas/etiologia , Carcinoma de Células Escamosas/patologia , Carcinogênese , Metaplasia/complicações
13.
Front Psychol ; 14: 1129334, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37179869

RESUMO

Neuroaesthetics research explores brain, body and behavioral responses to engagement with the arts and other aesthetic sensory experiences. Evidence indicates that such experiences can help address various psychological, neurological and physiological disorders, and that they can support mental and physical well-being and learning in the general population. The interdisciplinary nature of this work contributes to its impact and promise; however, it also creates challenges as various disciplines approach and define research and practice in varied ways. Recent field-wide reports have noted that a consensus translational framework is needed to support further neuroaesthetics research that can deliver meaningful knowledge and interventions. The Impact Thinking Framework (ITF) was designed to meet this need. Through a description of the framework's nine iterative steps and a presentation of three case studies, this paper posits that the ITF can support researchers and practitioners in understanding and applying aesthetic experiences and the arts to advance health, well-being, and learning.

14.
Animals (Basel) ; 13(16)2023 Aug 16.
Artigo em Inglês | MEDLINE | ID: mdl-37627432

RESUMO

Equestrian sport has various welfare issues and educational needs. To address these complex interactions, we propose an integrated approach called the Triple-E Model, which focuses on the equine, equestrian, and environmental triad. A literature review of existing models suggests that complexities of these interactions are overlooked, despite the significant impact of equine industries on economics, healthcare, and animal welfare. This paper discusses current models and theories used to evaluate equine-equestrian-environmental interactions and introduces the Triple-E Model to foster multidisciplinary collaboration. Unlike the One Health triad, which focuses on disease emergence, transmission, and zoonosis, the Triple-E Model extends to non-infectious research, such as musculoskeletal injury. It promotes collaborative care and rehabilitation within the equestrian community by engaging multidisciplinary, multi-setting, and multi-sectoral teams. Given the nature of human-animal interaction and welfare considerations, this model fills the gap in understanding human-horse interactions. The paper highlights the limitations of existing models and explains how the Triple-E Model guides and encourages holistic team collaboration in the equestrian community.

15.
Disabil Rehabil ; : 1-10, 2023 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-37277901

RESUMO

Purpose: The Inclusive Society partnership research model aims to promote change in society for people with disabilities by supporting research teams composed of researchers and partner organizations. The objective of this article is to identify the strengths and limitations of this research model.Material and methods: An autoethnography approach was used. Thematic analysis of four methods was undertaken: semi-directed interviews with members of the research teams funded by Inclusive Society (researchers, partners), a focus group with the Inclusive Society's intersectoral collaboration agents, their logbooks, and Inclusive Society's annual reports.Results: Strengths and limitations of the Inclusive Society model were identified through their networking activities, the role and support of the intersectoral collaboration agents and the partnership research program.Conclusions: Networking activities are an essential element of Inclusive Society. They are indispensable for composing intersectoral research teams that will work on answering needs of people with disabilities. Intersectoral collaboration agents are also a strength of the model, but their role could be clarified to better frame what tasks are in their scope of practice and what the research teams could ask from them. Finally, the research program eligibility criteria could be improved to support, among others, the projects' appropriation phases.


Networking activities stimulate the creation of intersectoral research teams centered on answering the needs of people with disabilities that are identified in the fieldHired facilitators can play an important role in the emergence of research teams, merging the academic and non-academic worlds, and supporting the teams during their research projectIn participatory research projects, some funding should be reserved to support the partner organization's participation and the appropriation phase of the research projects.

16.
J Family Med Prim Care ; 11(9): 5722-5729, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-36505535

RESUMO

Hypertension is one of the significant risk factors for many noncommunicable diseases (NCDs) including cardiovascular diseases (CVDs), diabetes, stroke and chronic artery diseases. Despite the dismal scenario of CVDs in India, there is paucity of research in the field, which hampers effective decision making. In cognizance of the crucial role played by operational research (OR) in NCD policy design and program implementation, the Resource Center of Cardiovasuclar Health issued an open call for a manuscript writing program on hypertension using secondary data of National Family Health Survey-4. After thorough screening of the concept proposals of the applicants, 30 researchers were selected. Each of the 30 selected researchers further formed team of 3-7 researchers per team, thus having almost 150 + researchers on the board. Besides receiving the short workshops for the finalization of research question and manuscript writing, each team of researchers was assigned an OR mentor for guidance, review and finalization of the manuscript. There were two levels of peer review for each manuscript. In this first-of-its-operational research (OR) model on hypertension, we built the capacity of young researchers from various medical and research institutes of country in OR related to hypertension in India. The models' success is proved by its cost-effective approach and development of 30 high-quality research articles on hypertension. While we faced challenges in the process, several lessons were learned which will be instrumental in the future planning and implementation of such OR programs for other public health issues.

17.
Front Oncol ; 12: 850732, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35372014

RESUMO

Cholangiocarcinoma (CCA) is an aggressive tumor characterized by a poor prognosis. Therapeutic options are limited in patients with advanced stage of CCA, as a result of the intrinsic or acquired resistance to currently available chemotherapeutic agents, and the lack of new drugs entering into clinical application. The challenge in translating basic research to the clinical setting, caused by preclinical models not being able to recapitulate the tumor characteristics of the patient, seems to be an important reason for the lack of effective and specific therapies for CCA. So, there seems to be two ways to improve patient outcomes. The first one is developing the combination therapies based on a better understanding of the mechanisms contributing to the resistance to currently available chemotherapeutic agents. The second one is developing novel preclinical experimental models that better recapitulate the genetic and histopathological features of the primary tumor, facilitating the screening of new drugs for CCA patients. In this review, we discussed the evidence implicating the mechanisms underlying treatment resistance to currently investigated drugs, and the development of preclinical experiment models for CCA.

18.
Cardiovasc Intervent Radiol ; 45(5): 705-708, 2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35182196

RESUMO

PURPOSE: To define the radiological arterial anatomy in mature microminipigs as a pre-clinical research animal model in interventional radiology. MATERIALS AND METHODS: Five female microminipigs (weighing 20.9 ± 2.9 kg) were used in this study. Under general anesthesia, computed tomography (CT) angiography was performed using a 16-slice CT scanner. CT was performed 12 s after initiation of an intravenous injection of 40 ml of nonionic contrast media at 3.0 ml/second using a power injector. The transverse CT angiography images were evaluated using a digital imaging and communication in medicine viewer, and the diameters of the following 41 arteries were measured.: ascending aorta, descending aorta, thoracoabdominal aorta, abdominal aorta, pulmonary artery trunk, both pulmonary, brachiocephalic artery, short common bicarotid, both common carotid artery, subclavian, bronchial, internal mammary, celiac, common hepatic, left lateral hepatic, middle hepatic, left hepatic, gastroduodenal, cranial duodenopancreatic, splenic, left gastric, cranial mesenteric, ileocolic , bilateral colic artery, caudal mesenteric, cranial rectal, renal, both external iliac arteries, internal iliac common trunk, and both internal iliac and femoral arteries. RESULTS: The microminipigs' vascular anatomy was the same as domestic pig anatomy and similar to human anatomy. The diameter of the aorta (ascending to abdominal) was 17.1-7.0 mm, iliac and femoral arteries (internal iliac common trunk to femoral artery): 5.5-3.8 mm, pulmonary arteries: 9.3-14.7 mm, and major first aortic branches (e.g., celiac or brachiocephalic artery): 2.2-9.2 mm. CONCLUSION: This study defined the microminipig arterial anatomy in the trunk.


Assuntos
Aorta Abdominal , Radiologia Intervencionista , Angiografia/métodos , Animais , Aorta Abdominal/anatomia & histologia , Artéria Celíaca , Feminino , Humanos , Artéria Mesentérica Superior , Tomografia Computadorizada por Raios X/métodos
19.
Front Psychol ; 13: 939336, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-36300075

RESUMO

The COVID-19 pandemic has rekindled interest in online learning as a desirable substitute. In Saudi Arabia's educational system, technology and online learning are becoming more and more significant. In order to prepare students for the digital age and Saudi Vision 2030, there is an increasing desire for educational institutions to use e-learning. Students and faculty at Saudi institutions now have more opportunities to better grasp the globalized digital age thanks to the integration and acceptance of digital technology into learning and teaching. Therefore, this study aims to analyze and investigate the educational quality, social influence, and TAM Model factors that increase the students' attitude toward using e-learning; thus, it affects students' satisfaction and academic performance. The study was conducted at two universities in Saudi Arabia. Structural equation modeling (SEM) and route analysis were used to evaluate the research model and analyze data from e-learning users through a questionnaire. The findings revealed that perceived ease of use (PEU) and perceived usefulness (PU) mediate the effects of educational quality (EDQ), social influence (SOI), and perceived enjoyment (PE), which in turn affect students' attitude toward use (ATU), and students' satisfaction with using e-learning systems (SSE). Additionally, the results demonstrated that the mediator factors had favorable "R square (R2)" values for adopting e-learning systems in higher education, with PEU = 0.562, PU = 0.712, ATU = 0.608, and SSE = 0.636. The hypotheses' findings led to the development of a validated instrument to measure students' online learning in Saudi Arabia's higher education.

20.
Front Bioeng Biotechnol ; 10: 800830, 2022.
Artigo em Inglês | MEDLINE | ID: mdl-35350178

RESUMO

Traditional monolayer cell cultures often fail to accurately predict the anticancer activity of drug candidates, as they do not recapitulate the natural microenvironment. Recently, three-dimensional (3D) culture systems have been increasingly applied to cancer research and drug screening. Materials with good biocompatibility are crucial to create a 3D tumor microenvironment involved in such systems. In this study, natural silk fibroin (SF) and chitosan (CS) were selected as the raw materials to fabricate 3D microscaffolds; Besides, sodium tripolyphosphate (TPP), and 1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide (EDC) were used as cross-linking agents. The physicochemical properties of obtained scaffolds were characterized with kinds of testing methods, including emission scanning electron microscopy, x-ray photoelectron spectroscopy, fourier transform infrared spectroscopy, water absorption, and swelling ratio analysis. Cancer cell lines (LoVo and MDA-MB-231) were then seeded on scaffolds for biocompatibility examination and drug sensitivity tests. SEM results showed that EDC cross-linked scaffolds had smaller and more uniform pores with great interconnection than the TPP cross-linked scaffolds, and the EDC cross-linked scaffold exhibited a water absorption ratio around 1000% and a swelling ratio of about 72%. These spatial structures and physical properties could provide more adhesion sites and sufficient nutrients for cell growth. Moreover, both LoVo and MDA-MB-231 cells cultured on the EDC cross-linked scaffold exhibited good adhesion and spreading. CCK8 results showed that increased chemotherapeutic drug sensitivity was observed in 3D culture compared with 2D culture, particularly in the condition of low drug dose (<1  µ M). The proposed SF/CS microscaffold can provide a promising in vitro platform for the efficacy prediction and sensitivity screening of anticancer drugs.

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