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Samari M, Kashanian S, Zinadini S, Derakhshankhah H. Designing of a new transdermal antibiotic delivery polymeric membrane modified by functionalized SBA-15 mesoporous filler. Sci Rep 2024; 14:10418. [PMID: 38710793 DOI: 10.1038/s41598-024-60727-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Accepted: 04/26/2024] [Indexed: 05/08/2024] Open
Abstract
A new drug delivery system using an asymmetric polyethersulfone (PES) membrane modified by SBA-15 and glutamine-modified SBA-15 (SBA-Q) was prepared in this study by the aim of azithromycin delivery enhancement in both in vitro and ex vivo experiments. The research focused on optimizing membrane performance by adjusting critical parameters including drug concentration, membrane thickness, modifier percentage, polymer percentage, and pore maker percentage. To characterize the fabricated membranes, various techniques were employed, including scanning electron microscopy, water contact angle, and tensile strength assessments. Following optimization, membrane composition of 17% PES, 2% polyvinylpyrrolidone, 1% SBA-15, and 0.5% SBA-Q emerged as the most effective. The optimized membranes demonstrated a substantial increase in drug release (906 mg/L) compared to the unmodified membrane (440 mg/L). The unique membrane structure, with a dense top layer facilitating sustained drug release and a porous sub-layer acting as a drug reservoir, contributed to this improvement. Biocompatibility assessments, antibacterial activity analysis, blood compatibility tests, and post-diffusion tissue integrity evaluations confirmed the promising biocompatibility of the optimized membranes. Moreover, long-term performance evaluations involving ten repeated usages underscored the reusability of the optimized membrane, highlighting its potential for sustained and reliable drug delivery applications.
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Affiliation(s)
- Mahya Samari
- Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
| | - Soheila Kashanian
- Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran.
- Nanobiotechnology Department, Faculty of Innovative Science and Technology, Razi University, Kermanshah, Iran.
| | - Sirus Zinadini
- Department of Applied Chemistry, Faculty of Chemistry, Razi University, Kermanshah, Iran
- Environmental Research Center (ERC), Razi University, Kermanshah, Iran
| | - Hossein Derakhshankhah
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
- USERN Office, Kermanshah University of Medical Sciences, Kermanshah, Iran
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van der Braak K, Heus P, Orelio C, Netterström-Wedin F, Robinson KA, Lund H, Hooft L. Perspectives on systematic review protocol registration: a survey amongst stakeholders in the clinical research publication process. Syst Rev 2023; 12:234. [PMID: 38098085 PMCID: PMC10720136 DOI: 10.1186/s13643-023-02405-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND As systematic reviews (SRs) inform healthcare decisions, it is key that they address relevant questions and use rigorous methodology. Registration of SR protocols helps researchers identify relevant topics for future reviews and aims to prevent bias and duplication of effort. However, most SRs protocols are currently not registered, despite its significance. To guide future recommendations to enhance preregistration of SRs, it is important to gain a comprehensive understanding of the perspectives within the research community. Therefore, this study aims to examine the experiences with and factors of influence (barriers and facilitators) on prospective SR registration amongst researchers, peer reviewers and journal editors. METHODS Two different surveys were distributed to two groups: researchers and journal editors both identified from an existing sample of SRs. Researchers who indicated to have peer reviewed a SR were surveyed on their perspectives as peer reviewers as well. Survey design and analysis were informed by the Consolidated Framework for Implementation Research (CFIR). Shared and unique subthemes from the perspectives of researchers, peer reviewers and journal editors were identified and linked to the SR registration process (Innovation), to team, organisation (Inner setting) and (inter)national research community (Outer setting), and to characteristics of researchers, peer reviewers or journal editors (Individuals). RESULTS The survey's response rates were 65/727 (9%) for researchers, of which 37 were peer reviewers, and 22/308 (7%) for journal editors. Most respondents (n = 76, 94%) were familiar with SR protocol registration and 81% of researchers had registered minimally one SR protocol. Shared SR registration process subthemes were the importance and advantages of SR protocol registration, as well as barriers such as a high administrative burden. Shared subthemes regarding the inner and outer setting centred on journal processes, external standards and time. Shared individual factors were knowledge, skills and awareness. CONCLUSIONS The majority of the respondents were familiar with SR protocol registration and had a positive attitude towards it. This study identified suboptimal registration process, administrative burden and lack of mandatory SR protocol registration as barriers. By overcoming these barriers, SR protocol registration could contribute more effectively to the goals of open science. SYSTEMATIC REVIEW REGISTRATION osf.io/gmv6z.
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Affiliation(s)
- Kim van der Braak
- Cochrane Netherlands, Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands.
| | - Pauline Heus
- Cochrane Netherlands, Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Claudia Orelio
- Cochrane Netherlands, Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
- Research Support, Diakonessenhuis Utrecht, Bosboomstraat 1, Utrecht, 3582 KE, The Netherlands
| | - Fredh Netterström-Wedin
- School of Public Health and Community Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Karen A Robinson
- Division of General Internal Medicine, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Section for Evidence-Based Practice, Department of Health and Functioning, Western Norway University of Applied Sciences, Bergen, Norway
| | - Hans Lund
- Section for Evidence-Based Practice, Department of Health and Functioning, Western Norway University of Applied Sciences, Bergen, Norway
| | - Lotty Hooft
- Cochrane Netherlands, Julius Center for Health Sciences and Primary Care, University Medical Centre Utrecht, Utrecht University, Utrecht, The Netherlands
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Li Z, Wang Y, Xu Q, Ma J, Li X, Tian Y, Wen Y, Chen T. Ginseng and health outcomes: an umbrella review. Front Pharmacol 2023; 14:1069268. [PMID: 37465522 PMCID: PMC10351045 DOI: 10.3389/fphar.2023.1069268] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 06/09/2023] [Indexed: 07/20/2023] Open
Abstract
Background: Ginseng consumption has been associated with various health outcomes. However, there are no review articles summarizing these reports. Methods: PubMed, Embase, the Cochrane Library of Systematic Reviews, Scopus, CNKI and Wanfang databases were searched from inception to 31 July 2022. The Assessment of Multiple Systematic Reviews-2 (AMSTAR-2) and Grading of Recommendations Assessment, Development and Evaluation (GRADE) systems were used to assess the methodological quality and quality of evidence in each meta-analysis, and the results were summarized in a narrative form. Results: Nineteen meta-analyses that met the eligibility criteria were identified from among 1,233 papers. The overall methodological quality was relatively poor, with only five studies being low-quality, and 14 critically low-quality. When compared with control treatments (mainly placebo), ginseng was beneficial for improving fatigue and physical function, sexual function, menopausal symptoms, metabolic indicators, inflammatory markers, unstable angina and respiratory diseases. Adverse events included gastrointestinal symptoms and potential bleeding; however, no serious adverse events were reported. Conclusion: This umbrella review suggests that ginseng intake has beneficial therapeutic effects for diverse diseases. However, the methodological quality of studies needs to be improved considerably. In addition, it is imperative to establish the clinical efficacy of ginseng through high-quality randomized controlled trials.
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Affiliation(s)
- Zhongyu Li
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yang Wang
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Qing Xu
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jinxin Ma
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xuan Li
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yibing Tian
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yandong Wen
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- Department of Chinese Medicine, Eye Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ting Chen
- Department of Gastroenterology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Puljak L, Lund H. Definition, harms, and prevention of redundant systematic reviews. Syst Rev 2023; 12:63. [PMID: 37016459 PMCID: PMC10071231 DOI: 10.1186/s13643-023-02191-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 02/13/2023] [Indexed: 04/06/2023] Open
Abstract
BACKGROUND Along with other types of research, it has been stated that the extent of redundancy in systematic reviews has reached epidemic proportions. However, it was also emphasized that not all duplication is bad, that replication in research is essential, and that it can help discover unfortunate behaviors of scientists. Thus, the question is how to define a redundant systematic review, the harmful consequences of such reviews, and what we could do to prevent the unnecessary amount of this redundancy. MAIN BODY There is no consensus definition of a redundant systematic review. Also, it needs to be defined what amount of overlap between systematic reviews is acceptable and not considered a redundancy. One needs to be aware that it is possible that the authors did not intend to create a redundant systematic review. A new review on an existing topic, which is not an update, is likely justified only when it can be shown that the previous review was inadequate, for example, due to suboptimal methodology. Redundant meta-analyses could have scientific, ethical, and economic questions for researchers and publishers, and thus, they should be avoided, if possible. Potential solutions for preventing redundant reviews include the following: (1) mandatory prospective registration of systematic reviews; (2) editors and peer reviewers rejecting duplicate/redundant and inadequate reviews; (3) modifying the reporting checklists for systematic reviews; (4) developing methods for evidence-based research (EBR) monitoring; (5) defining systematic reviews; (6) defining the conclusiveness of systematic reviews; (7) exploring interventions for the adoption of methodological advances; (8) killing off zombie reviews (i.e., abandoned registered reviews); (9) better prevention of duplicate reviews at the point of registration; (10) developing living systematic reviews; and (11) education of researchers. CONCLUSIONS Disproportionate redundancy of the same or very similar systematic reviews can lead to scientific, ethical, economic, and societal harms. While it is not realistic to expect that the creation of redundant systematic reviews can be completely prevented, some preventive measures could be tested and implemented to try to reduce the problem. Further methodological research and development in this field will be welcome.
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Affiliation(s)
- Livia Puljak
- Center for Evidence-Based Medicine and Health Care, Catholic University of Croatia, Zagreb, Croatia.
| | - Hans Lund
- Section Evidence-Based Practice, Western Norway University of Applied Sciences, Bergen, Norway
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Abstract
BACKGROUND Prospective registration aims to reduce bias in the conduct and reporting of research and to increase transparency. In addition, prospective registration of systematic reviews is argued to help preventing unintended duplication, thereby reducing research waste. PROSPERO was launched in 2011 as the first prospective register for systematic reviews. While it has long been the only option to prospectively register systematic reviews, recently there have been new developments. Our aim was to identify and characterize current options to prospectively register a systematic review to assist review authors in choosing a suitable register. METHODS To identify systematic review registers, we independently performed internet searches in January 2021 using keywords related to systematic reviews and prospective registration. "Registration" was defined as the process of entering information about a planned systematic review into a database before starting the systematic review process. We collected data on the characteristics of the identified registries and contacted the responsible party of each register for verification of the data related to their registry. RESULTS Overall, we identified five options to prospectively register a systematic review: PROSPERO, the Registry of Systematic Reviews/Meta-Analyses in Research Registry, and INPLASY, which are specific to systematic reviews, and the Open Science Framework Registries and protocols.io, which represent generic registers open to any study type. Detailed information on each register is presented in tables in the main text. Regarding the systematic-review-specific registries, authors have to trade-off between the costs of registration and the processing time of their registration record. All registers provide an option to search for systematic reviews already registered in the register. However, it is unclear how useful these search functions are. CONCLUSION Authors can prospectively register their systematic review in five registries, which come with different characteristics and features. The research community should discuss fair and sustainable financing models for registers that are not operated by for-profit organizations.
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Puljak L, Pieper D. Replicability in the context of systematic reviews: a call for a framework with considerations regarding duplication, overlap and intentionality. J Clin Epidemiol 2021; 142:313-314. [PMID: 34780981 DOI: 10.1016/j.jclinepi.2021.11.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 10/26/2021] [Accepted: 11/08/2021] [Indexed: 11/16/2022]
Affiliation(s)
- Livia Puljak
- Center for Evidence-Based Medicine and Health Care, Catholic University of Croatia, Zagreb, Croatia.
| | - Dawid Pieper
- Faculty of Health Sciences Brandenburg, Brandenburg Medical School Theodor Fontane, Institute for Health Services and Health System Research, Rüdersdorf, Germany; Center for Health Services Research, Brandenburg Medical School Theodor Fontane, Rüdersdorf, Germany.
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