Browse publications by year: 2023

  1. Siraji MA, Rahman M
    Clocks Sleep, 2023 Dec 20;6(1):1-10.
    PMID: 38534796 DOI: 10.3390/clockssleep6010001
    Achieving research reproducibility is a precarious aspect of scientific practice. However, many studies across disciplines fail to be fully reproduced due to inadequate dissemination methods. Traditional publication practices often fail to provide a comprehensive description of the research context and procedures, hindering reproducibility. To address these challenges, this article presents a tutorial on reproducible research using the R programming language. The tutorial aims to equip researchers, including those with limited coding knowledge, with the necessary skills to enhance reproducibility in their work. It covers three essential components: version control using Git, dynamic document creation using rmarkdown, and managing R package dependencies with renv. The tutorial also provides insights into sharing reproducible research and offers specific considerations for the field of sleep and chronobiology research. By following the tutorial, researchers can adopt practices that enhance the transparency, rigor, and replicability of their work, contributing to a culture of reproducible research and advancing scientific knowledge.
  2. Konsam M, D'Souza SRB, Praharaj SK, Nayak BS, Shetty J, Bhat S, et al.
    Indian J Psychol Med, 2023 Nov;45(6):565-572.
    PMID: 38545536 DOI: 10.1177/02537176231167077
    BACKGROUND: Perinatal anxiety affects the antenatal woman, the growing fetus, and the newborn. This systematic review evaluated the effect of listening to music on perinatal anxiety among pregnant women and on newborn behaviors. No available reviews focus on interventions that include only classical forms of music or its benefit on perinatal anxiety among low-risk pregnant women or on newborn behaviors.

    METHODS: We included peer-reviewed primary research studies on the effect of music on perinatal anxiety, published in English, between January 2010 and August 2022. PubMed, Embase, Scopus, and ProQuest were searched using specific keywords, resulting in 225 studies for screening by title, abstract, and full text. Two independent reviewers screened them and assessed the quality of the included randomized controlled trials (RCTs) using Cochrane's Risk of Bias 2.0 tool (RoB2) and non-randomized controlled trial studies using the Joanna Briggs Institute Critical Appraisal tool. Due to the heterogeneity of outcome measures, the review's findings were summarized qualitatively.

    RESULTS: Nine studies with 1646 pregnant women and one with 260 pregnant women and their neonates were included. Results of all studies suggest that listening to classical music reduces the anxiety levels among pregnant women, as measured by the State-Trait Anxiety Inventory (STAI). Only one study reported the beneficial effect of antenatal exposure to music on improving newborn behaviors like orientation (ES 1.13, 95% CI: 0.82-1.44, P < 0.0001) and habituation (ES 1.05, 95% CI: 0.53-1.57, P = 0.0001). The risk of bias was unclear in most of the studies.

    CONCLUSIONS: Listening to classical music during the perinatal period may be an effective non-pharmacological intervention for reducing anxiety and pain and improving sleep quality and newborn behaviors. There is a need to conduct further interventional studies on the types of music provided and their effects on perinatal health outcomes.

    REGISTRATION OF THE PROTOCOL: The review was prospectively registered in PROSPERO 2021 CRD42021256806.

  3. Mohammed S, Savage T, Smith J, Shepley MM, White RD
    J Perinatol, 2023 Dec;43(Suppl 1):40-44.
    PMID: 38086966 DOI: 10.1038/s41372-023-01794-2
    Design charettes have been utilized in architectural and design practice to generate innovative ideas. The Reimagining Workshop is a version that combines practical and blue-sky thinking to improve healthcare facility design. The workshop engages diverse stakeholders who follow a human-centered design framework. The Reimagining the Neonatal Intensive Care Unit workshop sought to generate ideas for the future, optimal NICU without specific site or client constraints. Key themes include family-centered care, technology-enabled care, neighborhood and village design and investing in the care team. Recommendations include a supportive physical environment, celebrating milestones, complementary and alternative medicine, enhancing the transition of care, aiding the transition period, and leveraging technology. The workshop showcased the potential for transformative change in NICU design and provided a roadmap for future advancements. These findings can inform regulatory standards for NICU design and drive improvements in family-centered care, patient experiences, and outcomes within the NICU environment.
    MeSH terms: Delivery of Health Care; Humans; Infant, Newborn; Intensive Care Units, Neonatal*; Parents; Professional-Family Relations; Patient-Centered Care*
  4. Mohammad A, Zheoat A, Oraibi A, Manaithiya A, S Almaary K, Allah Nafidi H, et al.
    Front Mol Biosci, 2023;10:1306179.
    PMID: 38516396 DOI: 10.3389/fmolb.2023.1306179
    Introduction: The pursuit of effective therapeutic solutions for SARS-CoV-2 infections and COVID-19 necessitates the repurposing of existing compounds. This study focuses on the detailed examination of the central protease, 3-chymotrypsin-like protease (3CLpro), a pivotal player in virus replication. The combined approach of molecular dynamics simulations and virtual screening is employed to identify potential inhibitors targeting 3CLpro. Methods: A comprehensive virtual screening of 7120 compounds sourced from diverse databases was conducted. Four promising inhibitors, namely EN1036, F6548-4084, F6548-1613, and PUBT44123754, were identified. These compounds exhibited notable attributes, including high binding affinity (ranging from -5.003 to -5.772 Kcal/mol) and superior Induced Fit Docking scores (ranging from -671.66 to -675.26 Kcal/mol) compared to co-crystallized ligands. Results: In-depth analysis revealed that F6548-1613 stood out, demonstrating stable hydrogen bonds with amino acids His41 and Thr62. Notably, F6548-1613 recorded a binding energy of -65.72 kcal/mol in Molecular Mechanics Generalized Born Surface Area (MMGBSA) simulations. These findings were supported by Molecular Dynamics simulations, highlighting the compound's efficacy in inhibiting 3CLpro. Discussion: The identified compounds, in compliance with Lipinski's rule of five and exhibiting functional molecular interactions with 3CLpro, present promising therapeutic prospects. The integration of in silico methodologies significantly expedites drug discovery, laying the foundation for subsequent experimental validation and optimization. This approach holds the potential to develop effective therapeutics for SARS-CoV-2.
  5. Jalaluddin HA, Burud IAS, Yew RPC, Loh XT, Tan QGJ, Nathan N, et al.
    Ghana Med J, 2023 Jun;57(2):102-111.
    PMID: 38504755 DOI: 10.4314/gmj.v57i2.4
    OBJECTIVES: Among the vital measures to effectively curb the incidence of COVID-19 is the use of face masks. Little is known about what people understand and how they perceive and use face masks. This study aimed to determine the community's knowledge, attitude, and practice on the correct use of face masks.

    DESIGN: A cross-sectional study.

    SETTING: The study was carried out in Seremban 2, Malaysia using a self-administered questionnaire adapted from validated questionnaires of two previous studies.

    PARTICIPANTS: Through opportunistic sampling, three hundred and ninety-two literate adults (above 18) residing in Seremban 2, Malaysia, participated in this study.

    MAIN OUTCOME MEASURE: Knowledge, attitude, and practice scores were assessed among the participants.

    RESULTS: Three hundred seventy (94.4%) respondents demonstrated satisfactory knowledge. A satisfactory attitude score was achieved by 349 (89%) respondents, while 281 (71.7%) achieved a satisfactory practice score. Better knowledge was significantly associated with college or university education (p=0.028). Female gender (p=0.011) and college or university education (p=0.043) were significantly associated with better practice (p<0.05). Significant but weak to fair correlations between knowledge, attitude and practice were observed.

    CONCLUSION: Overall, there was satisfactory knowledge, attitude, and practice of face mask use among the Seremban 2 adult population in Malaysia. However, future public health education targeted toward the use of face masks requires more emphasis on proper usage and disposal to translate good knowledge into a good attitude and practice of face mask use to ensure the effectiveness in curbing the spread of infection.

    FUNDING: None declared.

    MeSH terms: Adult; Cross-Sectional Studies; Female; Humans; Health Knowledge, Attitudes, Practice; Masks; Surveys and Questionnaires; Pandemics
  6. Luke SH, Roy HE, Thomas CD, Tilley LAN, Ward S, Watt A, et al.
    Insect Conserv Divers, 2023 Mar;16(2):173-189.
    PMID: 38505358 DOI: 10.1111/icad.12637
    Entomology is key to understanding terrestrial and freshwater ecosystems at a time of unprecedented anthropogenic environmental change and offers substantial untapped potential to benefit humanity in a variety of ways, from improving agricultural practices to managing vector-borne diseases and inspiring technological advances.We identified high priority challenges for entomology using an inclusive, open, and democratic four-stage prioritisation approach, conducted among the membership and affiliates (hereafter 'members') of the UK-based Royal Entomological Society (RES).A list of 710 challenges was gathered from 189 RES members. Thematic analysis was used to group suggestions, followed by an online vote to determine initial priorities, which were subsequently ranked during an online workshop involving 37 participants.The outcome was a set of 61 priority challenges within four groupings of related themes: (i) 'Fundamental Research' (themes: Taxonomy, 'Blue Skies' [defined as research ideas without immediate practical application], Methods and Techniques); (ii) 'Anthropogenic Impacts and Conservation' (themes: Anthropogenic Impacts, Conservation Options); (iii) 'Uses, Ecosystem Services and Disservices' (themes: Ecosystem Benefits, Technology and Resources [use of insects as a resource, or as inspiration], Pests); (iv) 'Collaboration, Engagement and Training' (themes: Knowledge Access, Training and Collaboration, Societal Engagement).Priority challenges encompass research questions, funding objectives, new technologies, and priorities for outreach and engagement. Examples include training taxonomists, establishing a global network of insect monitoring sites, understanding the extent of insect declines, exploring roles of cultivated insects in food supply chains, and connecting professional with amateur entomologists. Responses to different challenges could be led by amateur and professional entomologists, at all career stages.Overall, the challenges provide a diverse array of options to inspire and initiate entomological activities and reveal the potential of entomology to contribute to addressing global challenges related to human health and well-being, and environmental change.
  7. Fessi MS, Ben Saad H, Soares Oliveira RF, Washif JA, Chamari K, Moalla W
    Tunis Med, 2023 Nov 05;101(11):795-799.
    PMID: 38468578
    AIM: This research design protocol outlines the methodology for a thorough evaluation of workload monitoring and management strategies in football.

    METHODS: The study involves conducting a global survey to fitness coaches, sports scientists, analysts, and physicians with experience in load monitoring within football. The research adheres to the principles of the Helsinki Declaration and complies with General Data Protection Regulation standards, with ethical approvals obtained from multiple Ethics Committees across various countries, including Tunisia. A consortium of professionals collaboratively crafted the survey instrument, dividing it into seven sections, each addressing specific aspects of workload monitoring in football. Survey reliability will undergo evaluation in a pilot study utilizing Cronbach's alpha and intraclass correlation coefficient. To ensure inclusivity, the survey will be translated into multiple languages, facilitating participation from diverse regions. As such, survey distribution will consider online platforms (such as social media) and email invitations, with a specific focus on engaging football clubs, federations, and professional networks. The targeted sample size will remain at 385 participants. Statistical analysis planning encompasses descriptive examination, exploration of variable relationships, hypothesis testing, and qualitative analyses of participant feedback and recommendations regarding load monitoring practices.

    EXPECTED RESULTS: Expected outcomes include i) A comprehensive global overview of training and match load monitoring practices in football, ii) The identification of emerging trends, an improved understanding of training optimization processes, and iii) The development of practical recommendations to enhance player well-being and performance.

    CONCLUSION: This study will contribute to the ongoing development of knowledge in the field of football workload monitoring.

    MeSH terms: Humans; Pilot Projects; Reproducibility of Results; Workload
  8. Alzain AF, Elhussein N, Hamd ZY, Fadulelmulla IA, Omer AM, Alotaibi A, et al.
    Front Med (Lausanne), 2023;10:1243014.
    PMID: 38486825 DOI: 10.3389/fmed.2023.1243014
    BACKGROUND: Volunteering is a beneficial activity with a wide range of positive outcomes, from the individual to the communal level. In many ways, volunteering has a positive impact on the development of a volunteer's personality and experience. This study aimed to evaluate the impact of health volunteering on improving the self-skills and practical capacities of students in the western region of the Kingdom of Saudi Arabia.

    MATERIALS AND METHODS: The study was a descriptive cross-sectional electronic web-based survey that was submitted on a web-based questionnaire; 183 students answered the survey, and then, the data were analyzed using SPSS.

    RESULTS: This study shows that 95.6% of participants agree and strongly agree that the health volunteering experience was useful, 2.7% of the participants neither agree nor disagree, and 1.6% disagree and strongly disagree. Regarding the distribution of the participants on skills learned from volunteering experience, the largest proportion of student (36.1%) volunteers in the health sector acquired communication skills and the smallest proportion of student (14.8%) volunteers in the acquired time management skills. Regarding the disadvantages, 81.4% of the participants do not think there were any disadvantages to their previous health volunteering experience, while only 18.6% of them think there were any disadvantages to their previous health volunteering experience. Additionally, the study found that the type of the sector affects the skills acquired from health volunteering.

    CONCLUSION: Research revealed that the majority considered volunteering a great experience. Volunteering increased the self-skills and practical capacities of radiology students, which proved the hypothesis.

  9. Amriviana MP, Khairunnisa C, Sasongko TH
    Narra J, 2023 Aug;3(2):e144.
    PMID: 38450260 DOI: 10.52225/narra.v3i2.144
    Stunting is defined by height of more than two standard deviations below the World Health Organization's (WHO) child growth standard median. It is a significant nutritional problem in developing countries, where in 2021, Indonesia recorded a stunting prevalence at 24.4%, slightly higher than the global prevalence (22%). Reducing the prevalence of stunting has been the focus of the current administration in the Indonesian government, as delineated in the 2020-2024 National Medium-Term Development Plan. Globally, many studies have addressed parental stature as a risk factor of stunting. However, systematic reviews that summarized and critically appraised the relationship between parental stature and the incidence of stunting in Indonesia was scarce. This systematic review aimed to assess parental stature as a risk factor for stunting among Indonesian toddlers. Studies were searched through PubMed (MEDLINE), Google Scholar and Mendeley. Studies on Indonesian toddlers under five years old living in Indonesia were included. The quality of the included studies was assessed using Joanna Briggs Institute (JBI) critical appraisal tool. Data were extracted using a standardized data extraction form and were analyzed using Cochrane's RevMan 5.3. Twenty-seven prospective and retrospective cohort, case-control and cross-sectional studies were included with a total 4041 children. Out of 27 included studies, eight were found to be of low, seven of moderate and twelve of high quality. The result showed that parental stature was associated with the incidence of stunting among toddlers in Indonesia, either the mother only (odds ratio (OR) 1.92; 95% confidence interval (95%CI: 1.71-2.15), the father only (OR 5.21; 95%CI: 1.71-15.86) or both parents (OR 3.01; 95%CI: 2.41-3.75). However, studies on father and both parental statures suffered from substantial heterogeneity, imprecision and mixed qualities, therefore, they should be cautiously interpreted.
  10. Rajamoorthy Y, Wagner AL, Kumaran VV, Munusamy S, Taib NM, Tin OH, et al.
    Narra J, 2023 Dec;3(3):e187.
    PMID: 38450341 DOI: 10.52225/narra.v3i3.187
    Children are susceptible and a potential source of transmission for coronavirus disease 2019 (COVID-19). However compulsory COVID-19 vaccination programs among children have not been a focus in Malaysia. The aim of this study was to measure parents' willingness to pay (WTP) for the COVID-19 vaccine and analyze the effects of socioeconomic variables on parents' WTP. An online cross-sectional study was conducted in Malaysia with two waves of surveys (i.e., different samples for each wave), March and June 2021. The study participants were Malaysian parents above 18 years old. Parents were randomized between two vaccine effectiveness profiles (95% and 50% effectiveness) and two risk levels of an adverse event (5% and 20% risk of fever). The WTP was estimated using a double-bounded dichotomous choice. Socioeconomic variables such as age of parent, gender, insurance, income, and education were examined. A total of 292 parents in March 2021 and 271 in June 2021 were included in the study. The vaccine safety and effectiveness profile did not significantly impact the WTP. In March 2021, the estimated WTP ranged from RM344.74 to RM399.64 (US$82.5 to US$95.6) across vaccine profiles and between RM377.55 and RM444.33 (US$90.3 to US$106.3) in June. Insurance status was associated with the parents' WTP, and during the June wave, the age of parents influenced the WTP. Implementing subsidies or free vaccinations is considerable to increase herd immunity and prevent transmission of COVID-19 in Malaysia.
  11. Heidarzadehpilehrood R, Pirhoushiaran M, Binti Osman M, Ling KH, Abdul Hamid H
    Iran J Pharm Res, 2023;22(1):e139985.
    PMID: 38444712 DOI: 10.5812/ijpr-139985
    BACKGROUND: Polycystic ovary syndrome (PCOS) affects women of reproductive age globally with an incidence rate of 5% - 26%. Growing evidence reports important roles for microRNAs (miRNAs) in the pathophysiology of granulosa cells (GCs) in PCOS.

    OBJECTIVES: The objectives of this study were to identify the top differentially expressed miRNAs (DE-miRNAs) and their corresponding targets in hub gene-miRNA networks, as well as identify novel DE-miRNAs by analyzing three distinct microarray datasets. Additionally, functional enrichment analysis was performed using bioinformatics approaches. Finally, interactions between the 5 top-ranked hub genes and drugs were investigated.

    METHODS: Using bioinformatics approaches, three GC profiles from the gene expression omnibus (GEO), namely gene expression omnibus series (GSE)-34526, GSE114419, and GSE137684, were analyzed. Targets of the top DE-miRNAs were predicted using the multiMiR R package, and only miRNAs with validated results were retrieved. Genes that were common between the "DE-miRNA prediction results" and the "existing tissue DE-mRNAs" were designated as differentially expressed genes (DEGs). Gene ontology (GO) and pathway enrichment analyses were implemented for DEGs. In order to identify hub genes and hub DE-miRNAs, the protein-protein interaction (PPI) network and miRNA-mRNA interaction network were constructed using Cytoscape software. The drug-gene interaction database (DGIdb) database was utilized to identify interactions between the top-ranked hub genes and drugs.

    RESULTS: Out of the top 20 DE-miRNAs that were retrieved from the GSE114419 and GSE34526 microarray datasets, only 13 of them had "validated results" through the multiMiR prediction method. Among the 13 DE-miRNAs investigated, only 5, namely hsa-miR-8085, hsa-miR-548w, hsa-miR-612, hsa-miR-1470, and hsa-miR-644a, demonstrated interactions with the 10 hub genes in the hub gene-miRNA networks in our study. Except for hsa-miR-612, the other 4 DE-miRNAs, including hsa-miR-8085, hsa-miR-548w, hsa-miR-1470, and hsa-miR-644a, are novel and had not been reported in PCOS pathogenesis before. Also, GO and pathway enrichment analyses identified "pathogenic E. coli infection" in the Kyoto encyclopedia of genes and genomes (KEGG) and "regulation of Rac1 activity" in FunRich as the top pathways. The drug-hub gene interaction network identified ACTB, JUN, PTEN, KRAS, and MAPK1 as potential targets to treat PCOS with therapeutic drugs.

    CONCLUSIONS: The findings from this study might assist researchers in uncovering new biomarkers and potential therapeutic drug targets in PCOS treatment.

  12. Zhu JJ, Ma Y, Xia G, Salle SM, Huang H, Sannusi SN
    Front Psychol, 2023;14:1217014.
    PMID: 38440371 DOI: 10.3389/fpsyg.2023.1217014
    The effects of short movies on social media platforms are gaining worldwide popularity and are now attracting global academic attention. Employing self-perception theory and qualitative research methodology, the study examines the influence of short video applications (TikTok) on app-user engagement and evaluates the self-perceived cognitive psychological understanding of Chinese university students. The findings show that identity, attitude change, emotional perception, and civic engagement are the most influential aspects of Chinese youths' self-perceptions. Furthermore, the positive and negative correlated components influence the distribution of short video values. Such tactical use of personality construction contributes to the present psychological research of Chinese university students.
  13. Li C, Zhong H, Liu G, Liu D, Wu M, Lam SS, et al.
    Eco Environ Health, 2023 Dec;2(4):243-245.
    PMID: 38435354 DOI: 10.1016/j.eehl.2023.05.001
    Image 1.
  14. Sun Y, Tang H, Du S, Chen Y, Ou Z, Zhang M, et al.
    Eco Environ Health, 2023 Dec;2(4):208-218.
    PMID: 38435359 DOI: 10.1016/j.eehl.2023.08.001
    Indoor microorganisms impact asthma and allergic rhinitis (AR), but the associated microbial taxa often vary extensively due to climate and geographical variations. To provide more consistent environmental assessments, new perspectives on microbial exposure for asthma and AR are needed. Home dust from 97 cases (32 asthma alone, 37 AR alone, 28 comorbidity) and 52 age- and gender-matched controls in Shanghai, China, were analyzed using high-throughput shotgun metagenomic sequencing and liquid chromatography-mass spectrometry. Homes of healthy children were enriched with environmental microbes, including Paracoccus, Pseudomonas, and Psychrobacter, and metabolites like keto acids, indoles, pyridines, and flavonoids (astragalin, hesperidin) (False Discovery Rate 
  15. Abdelhafez MMA, Ahmed KAM, Mohd Daud MNB, Jeffree MS, Kadir F, Baharuddin DMP, et al.
    Obstet Med, 2023 Mar;16(1):5-8.
    PMID: 37139500 DOI: 10.1177/1753495X221074610
    Impetigo herpetiformis (IH) is a pregnancy-specific dermatosis that is currently considered a form of generalised pustular psoriasis and mainly occurs in late pregnancy during the third trimester. IH presents as erythematous patches and pustules and might have systemic involvement. The disease may be associated with severe maternal, fetal, and neonatal complications. IH treatment is very challenging, however, various therapeutic options are available and effective for disease treatment.
  16. Dianati-Nasab M, Salimifard K, Mohammadi R, Saadatmand S, Fararouei M, Hosseini KS, et al.
    Front Oncol, 2023;13:1276232.
    PMID: 38425674 DOI: 10.3389/fonc.2023.1276232
    INTRODUCTION: This large case-control study explored the application of machine learning models to identify risk factors for primary invasive incident breast cancer (BC) in the Iranian population. This study serves as a bridge toward improved BC prevention, early detection, and management through the identification of modifiable and unmodifiable risk factors.

    METHODS: The dataset includes 1,009 cases and 1,009 controls, with comprehensive data on lifestyle, health-behavior, reproductive and sociodemographic factors. Different machine learning models, namely Random Forest (RF), Neural Networks (NN), Bootstrap Aggregating Classification and Regression Trees (Bagged CART), and Extreme Gradient Boosting Tree (XGBoost), were employed to analyze the data.

    RESULTS: The findings highlight the significance of a chest X-ray history, deliberate weight loss, abortion history, and post-menopausal status as predictors. Factors such as second-hand smoking, lower education, menarche age (>14), occupation (employed), first delivery age (18-23), and breastfeeding duration (>42 months) were also identified as important predictors in multiple models. The RF model exhibited the highest Area Under the Curve (AUC) value of 0.9, as indicated by the Receiver Operating Characteristic (ROC) curve. Following closely was the Bagged CART model with an AUC of 0.89, while the XGBoost model achieved a slightly lower AUC of 0.78. In contrast, the NN model demonstrated the lowest AUC of 0.74. On the other hand, the RF model achieved an accuracy of 83.9% and a Kappa coefficient of 67.8% and the XGBoost, achieved a lower accuracy of 82.5% and a lower Kappa coefficient of 0.6.

    CONCLUSION: This study could be beneficial for targeted preventive measures according to the main risk factors for BC among high-risk women.

  17. Zhang S, Liu Q, Yang C, Li X, Chen Y, Wu J, et al.
    Reprod Biomed Online, 2023 Nov 14;48(4):103727.
    PMID: 38402677 DOI: 10.1016/j.rbmo.2023.103727
    RESEARCH QUESTION: Does type 1 diabetes mellitus (T1DM) affect reproductive health of female patients? What is the potential mechanism of reproductive dysfunction in female patients caused by T1DM?

    DESIGN: Preliminary assessment of serum levels of female hormones in women with or without T1DM. Then histological and immunological examinations were carried out on the pancreas, ovaries and uteri at different stages in non-obese diabetic (NOD) and Institute of Cancer Research (ICR) mice, as well as assessment of their fertility. A protein array was carried out to detect the changes in serum inflammatory cytokines. Furthermore, RNA-sequencing was used to identify the key abnormal genes/pathways in ovarian and uterine tissues of female NOD mice, which were further verified at the protein level.

    RESULTS: Testosterone levels were significantly increased (P = 0.0036) in female mice with T1DM. Increasing age in female NOD mice was accompanied by obvious lymphocyte infiltration in the pancreatic islets. Moreover, the levels of serum inflammatory factors in NOD mice were sharply increased with increasing age. The fertility of female NOD mice declined markedly, and most were capable of conceiving only once. Furthermore, ovarian and uterine morphology and function were severely impaired in NOD female mice. Additionally, ovarian and uterine tissues revealed that the differentially expressed genes were primarily enriched in metabolism, cytokine-receptor interactions and chemokine signalling pathways.

    CONCLUSION: T1DM exerts a substantial impairment on female reproductive health, leading to diminished fertility, potentially associated with immune disorders and alterations in energy metabolism.

  18. Teh SW, Elderdery A, Rampal S, Subbiah SK, Mok PL
    Contemp Oncol (Pozn), 2023;27(4):255-262.
    PMID: 38405210 DOI: 10.5114/wo.2023.135364
    INTRODUCTION: Cutaneous squamous cell carcinoma (SCC) is the second most common form of skin malignancy, representing around 20% of all skin cancers. It is the main cause of death due to non-melanoma skin cancer every year. Metastatic cutaneous SCC is associated with poor prognosis in patients and warrants a more effective and specific approach such as disruption of genes associated with cancer metastasis.

    MATERIAL AND METHODS: Matrix metalloproteinases (MMPs) are enzymes involved in cancer progression and are regarded as major oncotargets. Among others, MMP9 plays critical roles in tumour progression, angiogenesis, and invasion of cutaneous SCC. We aimed to determine whether the MMP9 gene is a suitable gene target for anti-cancer therapy for cutaneous SCC. We performed clustered regularly interspaced short palindromic repeat (CRISPR)-Cas9 transfection of guide RNA (gRNA) targeting the MMP9 gene into human cutaneous SCC cell line A431.

    RESULTS: Following CRISPR transfection treatment, the viability (p < 0.01) and migratory activities (p < 0.0001) of in vitro cutaneous SCC cells were found to be reduced significantly. The use of quantitative polymerase chain reaction (qPCR) also revealed downregulation of the mRNA expression levels of cancer-promoting genes TGF-β, FGF, PI3K, VEGF-A, and vimentin. Direct inhibition of the MMP9 gene was shown to decrease survivability and metastasis of cutaneous SCC cell line A431.

    CONCLUSIONS: Our findings provided direct evidence that MMP9 is important in the viability, proliferation, and metastasis of cutaneous SCC cells. It serves as a positive foundation for future CRISPR-based targeted anti-cancer therapies in treating skin cancer and other forms of malignancies that involve MMPs as the key determinants.

  19. Ahmad MAB, Lee LC, Mohd Rosdi NAN, Abd Hamid NB, Ishak AA, Sino H
    Forensic Sci Res, 2023 Dec;8(4):313-320.
    PMID: 38405627 DOI: 10.1093/fsr/owad045
    Soil is commonly collected from an outdoor crime scene, and thus it is helpful in linking a suspect and a victim to a crime scene. The chemical profiles of soils can be acquired via chemical instruments such as Ultra-Performance Liquid Chromatography (UPLC). However, the UPLC chromatogram often interferes with an unstable baseline. In this paper, we compared the performance of five baseline correction (BC) algorithms, i.e. asymmetric least squares (AsLS), fill peak, iterative restricted least squares, median window (MW), and modified polynomial fitting, in discriminating 30 chromatograms of brownish soils by five locations of origin, i.e. PP, HK, KU, BL, and KB. The performances of the preprocessed sub-datasets were first visually inspected through the mean chromatograms and then further explored via scores plots of principal component analysis (PCA). Eventually, the predictive performances of the partial least squares-discriminant analysis (PLS-DA) models estimated from 1 000 pairs of training and testing samples (i.e. prepared via iterative random resampling split at 75:25) were studied to identify the best BC method. Mean raw chromatograms of the 10 soil samples were different from each other, with evident fluctuated baselines. AsLS and MW corrected chromatograms demonstrated the most significant improvement compared with the raw counterpart. Meanwhile, the scores plot of PCA revealed that most of the sub-datasets produced three separate clusters. Then, the sub-datasets were modelled via the PLS-DA technique. MW emerged as the excellent BC method based on the mean prediction accuracy estimated using 1 000 pairs of training and testing samples. In conclusion, MW outperformed the other BC methods in correcting the UPLC data of soil.

    KEY POINTS: UPLC data of soil interfere with baseline drifts.BC can improve the quality of the pixel-level UPLC data.MW emerges as the most desired algorithm in improving the quality of UPLC data of soil.

  20. Koh EJ, Tan JT, Amalina Manan NN, Hor KY, Teh ZY, Chin ML
    J Ayub Med Coll Abbottabad, 2023;35(4):690-692.
    PMID: 38406963
    Acquired haemophilia A (AHA) is a rare disease believed to be caused by spontaneous inhibition of clotting Factor VIII by autoantibodies. This is in contrast to the more common congenital haemophilias which are largely due to an absolute deficiency in coagulation factors. It has a prevalence of approximately one per million per year. However, this figure may be underestimated because there are many undocumented cases due to a lack of recognition. Patients who develop this disease may present with catastrophic bleeding despite having no previous bleeding history. In this study, we report a case of acquired Haemophilia A presenting with spontaneous unprovoked bruising and discuss the approach to diagnosis and how to alert the clinician to suspect this potentially rare but devastating disease.
    MeSH terms: Autoantibodies; Factor VIII; Hemorrhage; Humans
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