Displaying publications 1621 - 1640 of 55674 in total

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  1. Lee SH, Ng CX, Wong SR, Chong PP
    Curr Drug Targets, 2023;24(6):484-508.
    PMID: 36999414 DOI: 10.2174/1389450124666230329123409
    MicroRNAs have a plethora of roles in various biological processes in the cells and most human cancers have been shown to be associated with dysregulation of the expression of miRNA genes. MiRNA biogenesis involves two alternative pathways, the canonical pathway which requires the successful cooperation of various proteins forming the miRNA-inducing silencing complex (miRISC), and the non-canonical pathway, such as the mirtrons, simtrons, or agotrons pathway, which bypasses and deviates from specific steps in the canonical pathway. Mature miRNAs are secreted from cells and circulated in the body bound to argonaute 2 (AGO2) and miRISC or transported in vesicles. These miRNAs may regulate their downstream target genes via positive or negative regulation through different molecular mechanisms. This review focuses on the role and mechanisms of miRNAs in different stages of breast cancer progression, including breast cancer stem cell formation, breast cancer initiation, invasion, and metastasis as well as angiogenesis. The design, chemical modifications, and therapeutic applications of synthetic anti-sense miRNA oligonucleotides and RNA mimics are also discussed in detail. The strategies for systemic delivery and local targeted delivery of the antisense miRNAs encompass the use of polymeric and liposomal nanoparticles, inorganic nanoparticles, extracellular vesicles, as well as viral vectors and viruslike particles (VLPs). Although several miRNAs have been identified as good candidates for the design of antisense and other synthetic modified oligonucleotides in targeting breast cancer, further efforts are still needed to study the most optimal delivery method in order to drive the research beyond preclinical studies.
    Matched MeSH terms: Humans
  2. Chen M, Fargen KM, Mocco J, Siddiqui AH, Miyachi S, Mahadevan J, et al.
    J Neurointerv Surg, 2023 Jul;15(7):623-628.
    PMID: 37147004 DOI: 10.1136/jnis-2023-020309
    Matched MeSH terms: Humans
  3. Jane Ling MY, Ahmad N, Aizuddin AN
    PLoS One, 2023;18(6):e0286518.
    PMID: 37262079 DOI: 10.1371/journal.pone.0286518
    BACKGROUND: The burden of non-communicable diseases (NCDs) is increasing. Risk perception of NCDs is an important factor towards the uptake of preventive health interventions. There are various questionnaires assessing risk perception of NCDs, but no internationally standardized questionnaire has been available. Identification of factors associated with risk perception of NCDs may facilitate the development of targeted interventions. This systematic review aims to identify available questionnaire assessing risk perception of NCDs and the factors associated with risk perception of NCDs.

    METHODS: The reporting of this systematic review is in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We carried out a literature search through three databases (Scopus, PubMed, Web of Science) and targeted original article published in English between 2012 and 2021. Quality appraisal of the eligible articles was conducted using the Mixed Methods Appraisal Tool. Findings were synthesized using content analysis.

    RESULTS: A total of 86 studies were included. We found a variety of questionnaires assessing risk perception of NCDs, with many differences in their development, domains, items and validity. We also identified several personal, sociopsychological and structural factors associated with risk perception of NCDs.

    LIMITATIONS: Most of the included studies were of cross-sectional design, and therefore the quality of evidence was considered low and exhibit a high risk of bias. The role of publication bias within this systematic review should be acknowledged as we did not include grey literature. Additionally, language bias must be considered as we only included English-language publications.

    CONCLUSION: Further development and testing of available questionnaire is warranted to ensure their robustness and validity in measuring risk perception of NCDs. All the identified factors deserve further exploration in longitudinal and experimental studies.

    Matched MeSH terms: Humans
  4. Yu L, Abd Ghani MK, Aghemo A, Barh D, Bassetti M, Catena F, et al.
    Curr Med Chem, 2023;30(39):4390-4408.
    PMID: 36998130 DOI: 10.2174/0929867330666230330092725
    The COVID-19 pandemic, caused by the coronavirus, SARS-CoV-2, has claimed millions of lives worldwide in the past two years. Fatalities among the elderly with underlying cardiovascular disease, lung disease, and diabetes have particularly been high. A bibliometrics analysis on author's keywords was carried out, and searched for possible links between various coronavirus studies over the past 50 years, and integrated them. We found keywords like immune system, immunity, nutrition, malnutrition, micronutrients, exercise, inflammation, and hyperinflammation were highly related to each other. Based on these findings, we hypothesized that the human immune system is a multilevel super complex system, which employs multiple strategies to contain microorganism infections and restore homeostasis. It was also found that the behavior of the immune system is not able to be described by a single immunological theory. However, one main strategy is "self-destroy and rebuild", which consists of a series of inflammatory responses: 1) active self-destruction of damaged/dysfunctional somatic cells; 2) removal of debris and cells; 3) rebuilding tissues. Thus, invading microorganisms' clearance could be only a passive bystander response to this destroy-rebuild process. Microbial infections could be self-limiting and promoted as an indispensable essential nutrition for the vast number of genes existing in the microorganisms. The transient nutrition surge resulting from the degradation of the self-destroyed cell debris coupled with the existing nutrition state in the patient may play an important role in the pathogenesis of COVID-19. Finally, a few possible coping strategies to mitigate COVID-19, including vaccination, are discussed.
    Matched MeSH terms: Humans
  5. Ananda R, Roslan MHB, Wong LL, Botross NP, Ngim CF, Mariapun J
    Cerebrovasc Dis, 2023;52(3):239-250.
    PMID: 36167034 DOI: 10.1159/000526470
    INTRODUCTION: Recent randomized controlled trials (RCTs) have assessed the role of vagus nerve stimulation (VNS) when paired with standard rehabilitation in stroke patients. This review aimed to evaluate the efficacy and safety of VNS as a novel treatment option for post-stroke recovery.

    METHODS: We searched PubMed, EMBASE, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials (CENTRAL), and CINAHL Plus for articles published from their date of inception to June 2021. RCTs investigating the efficacy or safety of VNS on post-stroke recovery were included. The outcomes were upper limb sensorimotor function, health-related quality of life, level of independence, cardiovascular effects, and adverse events. The risk of bias was assessed using the Cochrane risk-of-bias tool, while the certainty of the evidence was assessed using the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) criteria. Review Manager 5.4 was used to conduct the meta-analysis.

    RESULTS: Seven RCTs (n = 236 subjects) met the eligibility criteria. Upper limb sensorimotor function, assessed by the Fugl-Meyer Assessment for Upper Extremity (FMA-UE), improved at day 1 (n = 4 RCTs; standardized mean difference [SMD] 1.01; 95% confidence interval [CI]: 0.35-1.66) and day 90 post-intervention (n = 3 RCTs; SMD 0.64; 95% CI: 0.31-0.98; moderate certainty of evidence) but not at day 30 follow-up (n = 2 RCTs; SMD 1.54; 95% CI: -0.39 to 3.46). Clinically significant upper limb sensorimotor function recovery, as defined by ≥6 points increase in FMA-UE, was significantly higher at day 1 (n = 2 RCTs; risk ratio [RR] 2.01; 95% CI: 1.02-3.94) and day 90 post-intervention (n = 2 RCTs; RR 2.14; 95% CI: 1.32-3.45; moderate certainty of the evidence). The between-group effect sizes for upper limb sensorimotor function recovery was medium to large (Hedges' g 0.535-2.659). While the level of independence improved with VNS, its impact on health-related quality of life remains unclear as this was only studied in two trials with mixed results. Generally, adverse events reported were mild and self-limiting.

    CONCLUSION: VNS may be an effective and safe adjunct to standard rehabilitation for post-stroke recovery; however, its clinical significance and long-term efficacy and safety remain unclear.

    Matched MeSH terms: Humans
  6. Tok PSK, Kamarudin N', Jamaludin M, Ab Razak MF, Ahmad MAS, Abu Bakar FA, et al.
    Infect Dis (Lond), 2022 Mar;54(3):235-237.
    PMID: 34772327 DOI: 10.1080/23744235.2021.2000636
    Matched MeSH terms: Humans
  7. Varghese LL, Bhattacharya A, Basannavar A
    BMJ Case Rep, 2021 Jul 02;14(7).
    PMID: 34215638 DOI: 10.1136/bcr-2021-241821
    Matched MeSH terms: Humans
  8. Hilmi IN, Nik Muhamad Affendi NA, Shahrani S, Thalha AM, Leow AH, Khoo XH
    Dig Dis, 2023;41(4):581-588.
    PMID: 36702102 DOI: 10.1159/000529238
    BACKGROUND: The differentiation between intestinal tuberculosis (ITB) and Crohn's disease (CD) remains a challenge, particularly in areas where tuberculosis is highly prevalent. Previous studies have identified features that favour one diagnosis over the other. The aim of the study was to determine the accuracy of a standardized protocol in the initial diagnosis of CD versus ITB.

    METHODS: All patients with suspected ITB or CD were prospectively recruited. A standardized protocol was applied, and the diagnosis was made accordingly. The protocol consists of history and examination, ileocolonoscopy with biopsies, and tuberculosis workup. The diagnosis of probable ITB was made based on at least one positive finding. All other patients were diagnosed as probable CD. Patients were treated either with anti-tubercular therapy or steroids. Reassessment was then carried out clinically, biochemically, and endoscopically. In patients with suboptimal response, the treatment was either switched or escalated depending on the reassessment.

    RESULTS: 164 patients were recruited with final diagnosis of 30 (18.3%) ITB and 134 (81.7%) CD. 1 (3.3%) out of 30 patients with ITB was initially treated as CD. 16 (11.9%) out of 134 patients with CD were initially treated as ITB. The initial overall accuracy for the protocol was 147/164 (89.6%). All patients received the correct diagnosis by 12 weeks after reassessment.

    CONCLUSION: In our population, most patients had CD rather than ITB. The standardized protocol had a high accuracy in differentiating CD from ITB.

    Matched MeSH terms: Humans
  9. Terada M, Nakamura K, Matsuda T, Okuma HS, Sudo K, Yusof A, et al.
    Jpn J Clin Oncol, 2023 Jun 29;53(7):619-628.
    PMID: 37099440 DOI: 10.1093/jjco/hyad033
    This report summarizes the presentations and discussions in the first Asian Clinical Trials Network for Cancers (ATLAS) international symposium that was held on 24 April 2022, in Bangkok, Thailand, and hosted by the National Cancer Center Hospital (NCCH), co-hosted by the Pharmaceuticals and Medical Devices Agency (PMDA), Clinical Research Malaysia (CRM) and the Thai Society of Clinical Oncology (TSCO), and supported by Embassy of Japan in Thailand. Since 2020, the NCCH has conducted the ATLAS project to enhance research environments and infrastructures to facilitate international clinical research and cancer genomic medicine in the Asian region. The purpose of the symposium was to discuss what we can achieve under the ATLAS project, to share the latest topics and common issues in cancer research and to facilitate mutual understanding. Invitees included stakeholders from academic institutions, mainly at ATLAS collaborative sites, as well as Asian regulatory authorities. The invited speakers discussed ongoing collaborative research, regulatory perspectives to improve new drug access in Asia, the status of phase I trials in Asia, the introduction of research activities at the National Cancer Center (NCC) and the implementation of genomic medicine. As the next steps after this symposium, the ATLAS project will foster increased cooperation between investigators, regulatory authorities and other stakeholders relevant to cancer research, and establish a sustainable pan-Asian cancer research group to increase the number of clinical trials and deliver novel drugs to patients with cancer in Asia.
    Matched MeSH terms: Humans
  10. Chan Y, Raju Allam VSR, Paudel KR, Singh SK, Gulati M, Dhanasekaran M, et al.
    Crit Rev Food Sci Nutr, 2023;63(19):3302-3332.
    PMID: 34613853 DOI: 10.1080/10408398.2021.1986467
    Persistent respiratory tract inflammation contributes to the pathogenesis of various chronic respiratory diseases, such as asthma, chronic obstructive pulmonary disease, and pulmonary fibrosis. These inflammatory respiratory diseases have been a major public health concern as they are the leading causes of worldwide mortality and morbidity, resulting in heavy burden on socioeconomic growth throughout these years. Although various therapeutic agents are currently available, the clinical applications of these agents are found to be futile due to their adverse effects, and most patients remained poorly controlled with a low quality of life. These drawbacks have necessitated the development of novel, alternative therapeutic agents that can effectively improve therapeutic outcomes. Recently, nutraceuticals such as probiotics, vitamins, and phytochemicals have gained increasing attention due to their nutritional properties and therapeutic potential in modulating the pathological mechanisms underlying inflammatory respiratory diseases, which could ultimately result in improved disease control and overall health outcomes. As such, nutraceuticals have been held in high regard as the possible alternatives to address the limitations of conventional therapeutics, where intensive research are being performed to identify novel nutraceuticals that can positively impact various inflammatory respiratory diseases. This review provides an insight into the utilization of nutraceuticals with respect to their molecular mechanisms targeting multiple signaling pathways involved in the pathogenesis of inflammatory respiratory diseases.
    Matched MeSH terms: Humans
  11. Rejeki PS, Witarto BS, Witarto AP, Rifdah SN, Wafa IA, Utami DM, et al.
    J Basic Clin Physiol Pharmacol, 2023 May 01;34(3):311-320.
    PMID: 36957989 DOI: 10.1515/jbcpp-2023-0040
    Moderate-to-vigorous physical activity (MVPA) has been shown to have a favorable effect on many diseases as a complementary therapy and is a critical component of healthy living. During the pandemic era, physical activity has been promoted for resistance against coronavirus disease 2019 (COVID-19). However, there is scarce evidence on whether MVPA could reduce the infectivity and susceptibility to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The objective of this meta-analysis was to determine the effect of MVPA on morbidity, mortality, and duration of hospitalization in COVID-19 patients. We performed a comprehensive search of five online databases for eligible studies up to September 9, 2021. Meta-analyses were conducted to determine the association between MVPA and COVID-19-related morbidity, hospitalization, and mortality. The odds ratio (OR) was applied as the summary statistic for the primary outcomes. Secondary analyses were conducted to evaluate the difference in the metabolic equivalent of tasks (METs) between the outcome and non-outcome groups with the mean difference as the pooled effect. This meta-analysis included eight observational studies. We found that MVPA significantly reduced the odds of contracting SARS-CoV-2 infection (OR=0.88; 95% confidence interval [CI] = 0.85-0.92), hospitalization (OR=0.56; 95% CI=0.35-0.92), and mortality (OR=0.42; 95% CI=0.21-0.81) due to COVID-19 compared to no physical activity. METs≥500 min/week were linked to decreased morbidity and mortality of COVID-19 (OR=0.94 [95% CI=0.90-0.98]; OR=0.56 [95% CI=0.38-0.83]). COVID-19 patients with MVPA demonstrated a lower risk of COVID-19-related morbidity, hospitalization, and mortality compared to those who were less active, highlighting the importance of an active lifestyle despite the pandemic situation where such activities are limited.
    Matched MeSH terms: Humans
  12. Bordin N, Sillitoe I, Nallapareddy V, Rauer C, Lam SD, Waman VP, et al.
    Commun Biol, 2023 Feb 08;6(1):160.
    PMID: 36755055 DOI: 10.1038/s42003-023-04488-9
    Deep-learning (DL) methods like DeepMind's AlphaFold2 (AF2) have led to substantial improvements in protein structure prediction. We analyse confident AF2 models from 21 model organisms using a new classification protocol (CATH-Assign) which exploits novel DL methods for structural comparison and classification. Of ~370,000 confident models, 92% can be assigned to 3253 superfamilies in our CATH domain superfamily classification. The remaining cluster into 2367 putative novel superfamilies. Detailed manual analysis on 618 of these, having at least one human relative, reveal extremely remote homologies and further unusual features. Only 25 novel superfamilies could be confirmed. Although most models map to existing superfamilies, AF2 domains expand CATH by 67% and increases the number of unique 'global' folds by 36% and will provide valuable insights on structure function relationships. CATH-Assign will harness the huge expansion in structural data provided by DeepMind to rationalise evolutionary changes driving functional divergence.
    Matched MeSH terms: Humans
  13. McKimm J, Ramani S, Forrest K, Bishop J, Findyartini A, Mills C, et al.
    Med Teach, 2023 Feb;45(2):128-138.
    PMID: 35543323 DOI: 10.1080/0142159X.2022.2057288
    Leadership and management are becoming increasingly recognised as vital for high-performing organisations and teams in health professions education. It is often difficult for those embarking on leadership activities (as well as more experienced leaders) to find their way through the volume of literature and generic information on the topic. This guide aims to provide a framework for developing educators' understanding of leadership, management, and followership in the context of health professions education. It explains many relevant approaches to leadership and suggests various strategies through which educators can develop their practice to become more effective.
    Matched MeSH terms: Humans
  14. Balakrishnan P, Smiline Girija AS, Shanmugam S, Kannan I, Vignesh R, Shankar EM, et al.
    Int J Public Health, 2023;68:1605790.
    PMID: 37266035 DOI: 10.3389/ijph.2023.1605790
    In resource-limited settings, there is growing evidence that HIV testing is lacking among high-risk key populations such as men having sex with men, injection drug users, and transgenders largely due to stigma, discrimination, and lack of confidentiality. Findings from recent studies among high-risk key populations and the general population from various regions including resource-limited settings support the need for wider accessibility of HIV self-testing (HIV-ST) to reach those who may not otherwise have access to testing. Therefore, HIV-ST has untapped potential as a strategy to improve access to HIV testing and to increase testing frequency among key high-risk populations and their partners. Though HIV-ST has emerged as a safe, acceptable, and effective way to reach people, there are several roadblocks to implementing the HIV-ST policy, and fast-track policy implementation needs to be necessitated with newer or modified strategic plans.
    Matched MeSH terms: Humans
  15. Hoshide S, Yamamoto K, Katsurada K, Yano Y, Nishiyama A, Wang JG, et al.
    Hypertens Res, 2023 Jan;46(1):3-8.
    PMID: 36229522 DOI: 10.1038/s41440-022-00994-1
    Matched MeSH terms: Humans
  16. Nor Hashimah AMM, Kan SL, Raymond AA
    J R Coll Physicians Edinb, 2022 Jun;52(2):134-137.
    PMID: 36147003 DOI: 10.1177/14782715221104860
    Calcinosis universalis (CU) is characterised by diffuse deposition of insoluble calcium salt in the skin, subcutaneous tissue or organs. Calcium deposits in the breast may be associated with an increased risk for developing breast cancer. We present a case of a 65-year-old woman diagnosed with CU secondary to undifferentiated connective tissue disease. She developed progressive calcification of her skin, which did not improve with oral medications aimed at reducing the calcification. Investigations to look for possible causes of calcification were all unremarkable. During follow-up, calcification was also found in both her breasts. Initial mammography was reported as fibroadenoma. However, 3 years later, she returned with metastatic breast cancer which presented with a massive pleural effusion of the right lung. Calcinosis universalis should now be considered as a risk factor for breast cancer.
    Matched MeSH terms: Humans
  17. Aidalina M, Khalsom S
    Med J Malaysia, 2023 May;78(3):411-420.
    PMID: 37271852
    INTRODUCTION: Countries must employ the most efficient way to vaccinate their population with the COVID-19 vaccines, given the vaccines' low availability compared to its demand. This review aims to identify and compare the different COVID-19 vaccine delivery strategies employed internationally in the recent year based on the economic evaluation findings and subsequently to recommend the most cost-effective strategy among them.

    MATERIAL AND METHODS: A systematic review was conducted by examining online databases (Scopus, MEDLINE and Science Direct) to identify health economic evaluation studies of COVID-19 vaccines. Critical appraisal of studies was conducted using the Consolidated Health Economic Evaluation Reporting Standards (CHEERS).

    RESULTS: A total of nine studies were selected for analysis. Results show two strategies that were cost-effective compared to its comparators: mass vaccination program compared to no vaccination and universal vaccination approach compared to a risk-stratified vaccination approach. Several other strategies were found to increase the cost-consequences in the COVID-19 vaccination program: higher vaccine effectiveness, higher vaccination pace, increased vaccination coverage, and vaccine prioritisation for an at-risk population. The study findings were restricted to analysis based on the current available data.

    CONCLUSION: COVID-19 vaccination policies should aim for increased vaccine production as well as a rapid and extensive vaccine delivery system to ensure the maximal value of vaccination strategies. These results can aid policymakers in opting for the most efficient approach to vaccinating the population during this COVID-19 pandemic and future pandemic.

    Matched MeSH terms: Humans
  18. Albart SA, Yusof Khan AHK, Wan Zaidi WA, Muthuppalaniappan AM, Kandavello G, Koh GT, et al.
    Med J Malaysia, 2023 May;78(3):389-403.
    PMID: 37271850
    INTRODUCTION: About 20 to 40% of ischaemic stroke causes are cryptogenic. Embolic stroke of undetermined source (ESUS) is a subtype of cryptogenic stroke which is diagnosed based on specific criteria. Even though patent foramen ovale (PFO) is linked with the risk of stroke, it is found in about 25% of the general population, so it might be an innocent bystander. The best way to treat ESUS patients with PFO is still up for discussion.

    MATERIALS AND METHODS: Therefore, based on current evidence and expert opinion, Malaysian expert panels from various disciplines have gathered to discuss the management of ESUS patients with PFO. This consensus sought to educate Malaysian healthcare professionals to diagnose and manage PFO in ESUS patients based on local resources and facilities.

    RESULTS: Based on consensus, the Malaysian expert recommended PFO closure for embolic stroke patients who were younger than 60, had high RoPE scores and did not require long-term anticoagulation. However, the decision should be made after other mechanisms of stroke have been ruled out via thorough investigation and multidisciplinary evaluation. The PFO screening should be made using readily available imaging modalities, ideally contrasttransthoracic echocardiogram (c-TTE) or contrasttranscranial Doppler (c-TCD). The contrast-transesophageal echocardiogram (c-TEE) should be used for the confirmation of PFO diagnosis. The experts advised closing PFO as early as possible because there is limited evidence for late closure. For the post-closure follow-up management, dual antiplatelet therapy (DAPT) for one to three months, followed by single antiplatelet therapy (APT) for six months, is advised. Nonetheless, with joint care from a cardiologist and a neurologist, the multidisciplinary team will decide on the continuation of therapy.

    Matched MeSH terms: Humans
  19. Renganathan E, Guinto R, Mahmood J, Lacey-Hall O, Veerakumarasivam A, Poppema S
    Front Public Health, 2023;11:1072823.
    PMID: 37168072 DOI: 10.3389/fpubh.2023.1072823
    This article is part of the Research Topic 'Health Systems Recovery in the Context of COVID-19 and Protracted Conflict'. Universities, as engines of knowledge creation and dissemination and as incubators of disciplined yet original thinking, have a key role to play in tackling the most complex challenges that societies and our planet face, from infectious diseases to the climate emergency. This commentary presents the perspectives from Sunway University, a young private university in Malaysia that made a strong commitment to the sustainable development goals (SDGs) prior to the pandemic, and its experiences in promoting research, innovation, and learning as part of COVID-19 recovery and in preparation for future crises such as the climate emergency. Some of the university's initiatives include embracing the planetary health approach, reviving essential public health functions, exploring pandemic resilience, addressing 'infodemics' and promoting science diplomacy. The example of Sunway University provides some insights on the opportunities and challenges that academic institutions face as they seek to reorient the paradigm of education, research, and service away from disciplinary siloes and towards a more integrated, preventive, accessible and translational approach.
    Matched MeSH terms: Humans
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