Browse publications by year: 2024

  1. Baharum NH, Wan Muhammad Hatta SF, Zainordin NA, Abdul Ghani R
    BMC Endocr Disord, 2024 Dec 02;24(1):260.
    PMID: 39617888 DOI: 10.1186/s12902-024-01778-z
    BACKGROUND: Diabetic kidney disease populations are categorized as high risk for fasting in Ramadan due to various potential fasting-related complications. Insulin analogues are recommended to be used in place of human insulin during fasting, as they carry a lower risk of hypoglycaemia and stable glycaemic variability. A paucity of data exits on the safety and efficacy of different basal insulin types during fasting for this population. This study aims to evaluate the safety and efficacy of three basal insulin among patients with Type 2 Diabetes Mellitus and concomitant mild to moderate chronic kidney disease who are keen to fast during Ramadan.

    MATERIALS AND METHODS: A single-centered, prospective observational study was conducted among 46 patients with type 2 diabetes mellitus and concomitant chronic kidney disease stage 2 and 3 who were on three different types of basal insulin (Glargine U-100, Levemir, and Insulatard), fasted in Ramadan 2022. All variables were listed as median (IQR). Hypoglycaemia events and glycemic variability obtained from Freestyle Libre continuous glucose monitoring were compared between insulin groups. Changes in glycated haemoglobin, fasting plasma glucose, renal profile, body weight, body mass index, and waist circumference pre and post-Ramadan were evaluated.

    RESULTS: The glycaemic variability was found highest in Insulatard with a median (IQR) of 37.2(33)% versus Levemir 34.4(32.4)% versus Glargine U-100 36.8(30.6)%, p = NS. Levemir had reported the lowest median time of below range of 2.5(13)% followed by Glargine 4(25)% and Insulatard 5(8)%; p = NS. The findings of this study indicated that glycated haemoglobin, fasting plasma glucose, renal profile, body weight, body mass index, and waist circumference did not alter statistically between the three groups post-Ramadan. Individually, Insulatard showed a significant reduction in weight and waist circumference (0.9kg, p = 0.026; 0.44 cm, p = 0.008) while Levemir showed a reduction in waist circumference (0.75cm, p = 0.019).

    CONCLUSION: This study revealed that Insulatard, Levemir, and Glargine demonstrated similar levels of safety and efficacy among those with diabetic kidney disease who observed fasting during Ramadan.

    MeSH terms: Insulin Glargine/therapeutic use; Adult; Aged; Female; Follow-Up Studies; Hemoglobin A, Glycosylated/analysis; Humans; Hypoglycemia; Insulin/therapeutic use; Islam*; Male; Middle Aged; Prognosis; Prospective Studies
  2. Cheng C, Wu S, Deng G, Sheng O, Yi G, Yang Q
    Mol Hortic, 2024 Dec 02;4(1):42.
    PMID: 39617929 DOI: 10.1186/s43897-024-00122-2
    Since publication of a draft genome of the doubled-haploid 'Pahang' banana (Musa acuminata, DH-Pahang), a new era for banana biology research has begun. With the release of genomic data from some important Musa species and subspecies and the continuous development of molecular biology techniques, significant progress has been made. Here, we summarize the achievements and advances in the banana molecular biology and breeding over the past decade covering origin and domestication, fruit biology, stress biology, and breeding aspects, and highlight their challenges and future perspectives. This review is intended to provide researchers with the latest information on the complex genetic background and evolutionary relationship of bananas, the biology of fruit ripening, and multi-omics-based stress biology research. We especially focus on recent advances in the molecular breeding of bananas, offering an informative research direction and providing valuable technical references for future research in the field.
  3. Chuah KH, Loo QY, Hian WX, Khoo XH, Panirsheeluam S, Jubri NBM, et al.
    PMID: 39618195 DOI: 10.1111/apt.18418
    BACKGROUND: International guidelines recommend contrasting initial treatment strategies for functional dyspepsia (FD).

    AIMS: To evaluate the efficacy and safety of treatment according to subtypes, compared with empirical proton pump inhibitor (PPI), in the initial treatment of FD.

    METHODS: We performed a single-blinded, randomised controlled trial of adults with FD. In the intervention group (treatment according to subtype), patients were categorised into epigastric pain syndrome (treatment esomeprazole); postprandial distress syndrome (PDS; treatment itopride) and overlap (treatment itopride, maintain, add/or switch to esomeprazole at week 4). The control group received esomeprazole only. The primary efficacy outcome was the assessment of global symptom improvement (primary end point: best two points from the 7-point Likert scale) over 8 weeks. Secondary outcomes included assessment of the change in nine individual upper gastrointestinal symptoms, quality of life (Short-Form Nepean Dyspepsia Index) and adverse events.

    RESULTS: We randomised 180 patients (median age: 50; 68.7% female 56.7% PDS) 1:1 into intervention and control arms. The percentage of patients achieving the primary efficacy outcome were 74.4% and 72.2%, respectively (p = 0.74). The improvement of individual symptoms in both groups were similar. The SF-NDI improved after treatment in both groups (p 

  4. Tan K, Husni NB, Liow JW, Keng SL, Shamsudin AH, Sulathireh T
    Cult Health Sex, 2024 Dec 02.
    PMID: 39618348 DOI: 10.1080/13691058.2024.2424225
    Despite growing international criticism of actions and efforts to change sexual orientation and gender identity, such efforts remain prevalent in Malaysia. Using data from a nationwide community-based survey, this study examined the prevalence of these efforts amongst LGBT+ adults and the association between exposure to them and mental health outcomes. Participants (n = 521) completed an online survey assessing exposure to efforts to change their sexual orientation and/or gender identity, internalised LGBT-phobia, negative future expectations, and several mental health variables. Just under sixty-four percent (n = 333) of participants reported having experienced change efforts, with the most common perpetrators being family members, friends and religious organisations or people. Recent (past year) and past exposure to change efforts (over one year ago) were each associated with significantly higher odds of suicidal ideation, non-suicidal self-injury, and suicide attempts. Participants with recent exposure to change efforts also reported elevated internalised LGBT-phobia and negative future expectations compared to those who lacked such experience. A content analysis of participants' open-ended responses documented the perceived impact of change efforts on proximal stressors and mental health and wellbeing. Recommendations are made for national authorities and healthcare bodies to ban efforts to change sexual orientation and gender identity in Malaysia.
  5. Hauwanga WN, McBenedict B, Goh KS, Yau RCC, Thomas A, Alphonse B, et al.
    Cureus, 2024 Oct;16(10):e72784.
    PMID: 39618573 DOI: 10.7759/cureus.72784
    Soft tissue sarcomas are malignant tumors characterized by heterogeneity and are associated with a high mortality rate. Histopathological grading is considered a pivotal factor in prognostication and treatment planning. While core needle biopsy exhibits high accuracy in determining tumor histology, it fails in some cases, potentially misclassifying high-grade tumors as low-grade. Magnetic resonance imaging (MRI) has been evaluated as an adjunctive tool for predicting histopathological tumor grade. This systematic review and meta-analysis evaluated MRI features capable of distinguishing high-grade from low-grade tumors in patients with soft tissue sarcoma. A literature search was carried out in PubMed, Embase, and Cochrane Central in May 2024. The following features were evaluated for both low-grade and high-grade tumors: tumor size, heterogeneity on T2, presence of necrotic areas, margin definition on T1, and post-contrast peritumoral enhancement. Statistical analysis was conducted using the OpenMeta[Analyst] software (Providence, RI: Brown University), applying random effects models for pooled analyses with a 95% confidence interval (CI) based on the inverse variance method. A total of four studies, involving 343 patients categorized by tumor grade (high-grade or low-grade), who underwent MRI, were included in the analysis. The meta-analysis found similar incidences of tumor sizes less than 5 cm in both high-grade and low-grade tumors (22.7%; 95% CI: 10.3-25% vs. 27%; 95% CI: 2.7-51.2%) and tumor sizes greater than 5 cm (71.3%; 95% CI: 64-78.6% vs. 52%; 95% CI: 23.6-80.5%). High-grade tumors showed a higher incidence of post-contrast peritumoral enhancement compared to low-grade tumors (66%; 95% CI: 43-89% vs. 26%; 95% CI: 4.6-47.4%) as well as heterogeneity on T2 greater than 50% (72.4%; 95% CI: 49.3-95.4% vs. 25.4%; 95% CI: 5.2-56%). Additionally, high-grade tumors had a lower incidence of the absence of necrotic signal compared to low-grade tumors (28.8%; 95% CI: 8.5-49.1% vs. 68%; 95% CI: 57.5-78.6%). Our findings suggest that post-contrast peritumoral enhancement, presence of necrotic areas, and heterogeneity on T2 greater than 50% are MRI features associated with high-grade tumors in soft tissue sarcoma. Tumor size, however, does not appear to be a reliable indicator for differentiating tumor grade.
  6. Bachtiar NA, Murtala B, Muis M, Ilyas MI, Abdul Hamid HB, As'ad S, et al.
    Vasc Health Risk Manag, 2024;20:521-531.
    PMID: 39618686 DOI: 10.2147/VHRM.S474143
    Ischemic stroke is the second leading cause of mortality and morbidity worldwide. Due to the urgency of implementing immediate therapy, acute stroke necessitates prompt diagnosis. The current gold standards for vascular imaging in stroke include computed tomography angiography (CTA), digital subtraction angiography (DSA) and magnetic resonance angiography (MRA). However, the contrast agents used in these methods can be costly and pose risks for patients with renal impairment or allergies. The aim of this paper is to provide a comprehensive overview of current MRI techniques and sequences for evaluating ischemic stroke, emphasizing the importance of non-contrast options and their clinical implications for radiologists in the diagnosis and management of ischemic stroke. Standard MRI sequences-such as T1-weighted imaging (T1WI), T2-weighted imaging (T2WI), fluid-attenuated inversion recovery (FLAIR), diffusion-weighted imaging (DWI), DWI-FLAIR mismatch, and apparent diffusion coefficient (ADC)-are essential for determining infarct location, volume, and age. Additionally, incorporating susceptibility-weighted imaging (SWI) sequence aids in identifying signs of hemorrhagic transformation within the infarcted region. Advanced techniques like arterial spin labeling (ASL) can serve as a non-contrast alternative for mapping cerebral blood flow (CBF) and allowing for comparison between infarcted and healthy brain areas. Adding ASL to the routine sequence allows ASL-DWI mismatch analysis that is useful for quantifying salvageable tissue volume and facilitate timely recanalization, while time-of-flight (TOF) MRA and magnetic resonance venography (MRV) help assess venous thrombosis, stenosis, or arterial occlusions. Finally, MR spectroscopy can provide insights into critical brain metabolites, including N-acetylaspartate (NAA), and lactate (Lac) to determine patient prognosis. Current MRI technology provides a myriad of sequence options for the comprehensive evaluation of ischemic stroke without the need for contrast material. A thorough understanding of the advantages and limitations of each sequence is crucial for its optimal implementation in diagnosis and treatment.
    MeSH terms: Cerebrovascular Circulation; Humans; Magnetic Resonance Imaging; Predictive Value of Tests*; Prognosis; Reproducibility of Results; Magnetic Resonance Angiography; Radiologists
  7. Alam MK, Awawdeh M, Alhazmi N, Alamoud KA, Iyer K, Abutayyem H, et al.
    Scientifica (Cairo), 2024;2024:4268902.
    PMID: 39618690 DOI: 10.1155/sci5/4268902
    Background: Despite the large number of studies that have been done in this area, there is still a gap in the literature when it comes to comparing the orthodontic tooth movement (OTM) efficacy of Invisalign and fixed orthodontic appliances. The primary objectives of this study were to evaluate and compare the efficacy of Invisalign and fixed orthodontic appliances in terms of the amount and rate of OTM. Specifically, the study aimed to determine if there was a statistically significant difference between these two treatment modalities in achieving OTM and to assess whether treatment duration differs significantly between Invisalign and traditional fixed appliances. This investigation seeks to address the existing gaps in the literature by providing a clear comparison based on recent empirical evidence, thereby contributing to more informed treatment decisions in orthodontic practices. Methodology: Relevant MeSH keywords and Boolean operators were selected by a team of reviewers to search several online databases for papers that were in accordance with the objectives of our review. Results: At the end of the search protocol, 10 studies were deemed to be eligible for inclusion in the review. The pooled analysis revealed a statistically significant reduction in treatment time for patients using Invisalign compared to those with fixed appliances, with a total OR of 0.61 [95% CI 0.43, 0.85]. No significant heterogeneity was detected (I 2 = 0%), and the test for overall effect was significant (Z = 2.86, p=0.004). Furthermore, a nonsignificant trend favoring Invisalign was shown, with an odds ratio of 1.43 and a confidence interval that included 1 (0.97, 2.10). The p value was 0.07, and there was negligible heterogeneity among studies, as indicated by an I 2 of 0%. Conclusion: Based on the findings from the selected studies, it can be concluded that Invisalign and fixed orthodontic appliances have similar overall efficacy in eliciting OTM. However, Invisalign treatment requires significantly less time to complete than fixed orthodontic appliances. Despite these observations, further studies are required to explore the long-term stability of OTM achieved with Invisalign and fixed orthodontic appliances. Registration and Protocol: Registration was done in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) standards (CRD42023405593). The research protocol was created to meet the goals and was properly filed with PROSPERO; however, it has not been prospectively registered.
  8. Sahruzaman SA, Kamisan N
    Cureus, 2024 Nov;16(11):e74689.
    PMID: 39618770 DOI: 10.7759/cureus.74689
    A pulled elbow is a common type of injury in children aged one to four years, where the forearm is pulled in an extended pronated position. There are a few cases of pulled elbow reported in children under one year old. We experienced an atypical pulled elbow case in a six-month-old girl after her mother rolled her from a right lateral position to a supine position, leaving her arm trapped behind her back. The pulled elbow was suspected based on the classical presentation of pain over the elbow, a less mobilized limb, and a pronated arm position as well as the exclusion of fracture from a plain radiograph. A high index of suspicion of pulled elbow should be kept in infants, despite their age presentation and the absence of an obvious elbow-pulling mechanism.
  9. Tharumen N, Sithamparam M, Jia TZ, Chandru K
    Biophys Rev, 2024 Oct;16(5):651-654.
    PMID: 39618795 DOI: 10.1007/s12551-024-01223-4
    The sun generates light and heat for life on Earth to flourish. However, during the late Hadean-early Archean epoch on Earth, the "faint young sun" (FYS) was less luminous, influencing prebiotic chemistry and, by extension, the origins of life (OoL). However, higher levels of ultraviolet (UV) radiation from the FYS, especially UV-C, due to the lack of an ozone layer, would likely have impacted the assembly, stability, persistence, and functions of prebiotic cellular precursors, i.e., protocells. Consequently, it is essential to study how such UV-C radiation would have affected the synthesis and stability of prebiotically relevant molecules and protocells to better understand the plausibility of the OoL during the FYS period. In this letter, we introduce unanswered questions surrounding the structure and stability of protocells under UV-C radiation. Such a perspective may be vital to exoplanetary systems orbiting other stars, enhancing our understanding of life's potential beyond our solar system.
  10. Peng Q, Zhu X, Jiang Y, Peng M, Zheng D, Wang X, et al.
    Front Med (Lausanne), 2024;11:1462513.
    PMID: 39618816 DOI: 10.3389/fmed.2024.1462513
    INTRODUCTION: Non-alcoholic fatty liver disease (NAFLD) has become the leading cause of chronic liver disease worldwide. Hepatocellular carcinoma (HCC) is the fifth most common malignancy worldwide, with high morbidity and mortality. The rapidly increasing incidence of NAFLD is becoming an essential precursor of HCC globally. MicroRNAs (miRNAs) are involved in the progression of NAFLD and HCC.

    METHOD: Potential miRNAs associated with NAFLD in HCC tumorigenesis were identified through a systematic review, and their roles were evaluated by data mining analysis. The biological function of the potential miRNA and its target genes in NAFLD and HCC were evaluated by bioinformatic analysis.

    RESULT: MIR122 was identified as the potential miRNA associated with NAFLD and HCC. Then, MIR122 expression was significantly lower in HCC patients, and higher MIR122 levels were associated with significantly better overall survival. Next, the biological functions of MIR122 and target genes were predicted to be involved in inflammation, fibrosis, cell proliferation, invasion, metastasis, and apoptosis. In particular, the FOXO signaling pathway may regulate the above biological functions.

    CONCLUSION: MIR122 was suggested to be involved in progressing from NAFLD to HCC through the PI3K/AKT/FOXO pathway.

    SYSTEMATIC REVIEW REGISTRATION: PROSPERO, identifier: CRD 42024517940.

  11. Almoosawy SA, Esmaiel A, Farrag I, Al Jarallah M, Zubaid M
    Heart Views, 2024;25(2):57-62.
    PMID: 39619106 DOI: 10.4103/heartviews.heartviews_50_24
    BACKGROUND: Emerging evidence from various countries suggests that ST-segment elevation myocardial infarction (STEMI) patients with differing health-care insurance types experience discrepancies in clinical management and outcomes. Kuwait government provides free essential treatments and medications to noninsured patients with certain emergency conditions. We aimed to compare differences in clinical management and in-hospital and 30-day outcomes in STEMI patients with different insurance types in Kuwait.

    METHODS: Data were derived from Kuwait Catheterization Laboratory Project (Kuwait CLAP) registry. Adult patients (≥18 years) diagnosed with STEMI were enrolled in Kuwait CLAP registry between February 2020 and February 2021. Patients were categorized into insured and noninsured. The coprimary outcomes were the in-hospital and 30-day mortality in insured versus noninsured patients with STEMI. In-hospital and 30-day adverse cardiac outcomes were also compared.

    RESULTS: Of 668 patients with STEMI, 116 (17%) were insured and 552 (83%) were not insured. Three (2.6%) of the insured and 9 (1.6%) of the noninsured patients suffered in-hospital mortality, while no patients in the insured group and four patients (0.7%) patients in the noninsured group suffered 30-day mortality, with no significant difference between the two groups (P = 0.447 and P = 1, respectively). The rates of in-hospital complications and 30-day adverse events were similar between the two groups.

    CONCLUSIONS: Our findings suggest no differences in acute or short-term outcomes among patients with different insurance status in Kuwait. These findings are reassuring knowing that the free essential services provided by Kuwait government for STEMI patients did not compromise the outcomes of noninsured compared to insured patients.

  12. Mansor J, Safian N, Abdul Razak F, Ismail H, Ghazali MH, Ismail N
    PeerJ, 2024;12:e18571.
    PMID: 39619183 DOI: 10.7717/peerj.18571
    BACKGROUND: Social interactions within and between communities influenced the spread of COVID-19. By using social network analysis (SNA), we aimed to understand the effect of social interaction on the spread of disease in a rural district.

    METHOD: A retrospective record review study using positive COVID-19 cases and contact-tracing data from an area in Malaysia was performed and analysed using the SNA method through R software and visualised by Gephi software. The justification for utilizing SNA is its capability to pinpoint the individuals with the highest impact and accountability for the transmission of COVID-19 within the area, as determined through SNA.

    RESULT: Analysis revealed 76 (4.5%) people tested positive for COVID-19 from 1,683 people, with 51 (67.1%) of the positive ones being male. Outdegrees for 38 positive people were between 1 and 12, while 41 people had 1-13 indegree. Older males have a higher outdegree, while younger females have a higher outdegree than other age groups among same-sex groups. Betweenness was between 0.09 and 34.5 for 15 people. We identified 15 people as super-spreaders from the 42 communities detected.

    CONCLUSION: Women play a major role in bridging COVID-19 transmission, while older men may transmit COVID-19 through direct connections. Thus, health education on face mask usage and hand hygiene is important for both groups. Working women should be given priority for the work-from-home policy compared to others. A large gathering should not be allowed to operate, or if needed, with strict adherence to specific standard operating procedures, as it contributes to the spread of COVID-19 in the district. The SNA allows the identification of key personnel within the network. Therefore, SNA can help healthcare authorities recognise evolving clusters and identify potential super-spreaders; hence, precise and timely action can be taken to prevent further spread of the disease.

    MeSH terms: Adolescent; Adult; Aged; Child; Child, Preschool; Female; Humans; Infant; Malaysia/epidemiology; Male; Middle Aged; Retrospective Studies; Rural Population*; Contact Tracing; Young Adult; Pandemics/prevention & control; Social Networking
  13. Khalaf TK, Ismail N, Nazri NA, Ahmed N, Yajid AI, Mohamud R, et al.
    PeerJ, 2024;12:e18420.
    PMID: 39619199 DOI: 10.7717/peerj.18420
    BACKGROUND: Natural killer cells (NK cells) are essential in cancer immunosurveillance in the body as they can recognize cancer cells that lacking MHC class 1 on their surface. Regulatory cytokines, including interleukin (IL)-18, IL-12, IL-10, IL-8, interferon-γ (IFN-γ), and secretory granules like perforin and granzyme are involved in NK cell-mediated cytotoxicity. Stimulating NK cells cytotoxicity towards cancer cells is an ideal strategy to combat cancer naturally. Medicinal plants have been reported to enhance immunity, with Pereskia bleo (P. bleo) particularly noteworthy due to its abundant bioactive compounds and ability to activate immune cells. This study aimed to evaluate the potential of methanol extract of P. bleo leaves (MEPB) for enhancing NK cell cytotoxicity against triple-negative human breast cancer cells (MDA-MB-231).

    METHODS: The optimal concentration of MEPB to activate NK cells was determined using healthy blood samples, assessing the expression of IL-12, IL-18, IL-10, IL-8, IFN-γ, perforin, and granzyme B via an enzyme-linked immunosorbent assay (ELISA). NK cell purity from healthy donors and breast cancer patients was determined using specific antibodies, and the number of NK cells was assessed using flow cytometry and a hemocytometer. A co-culture experiment, ELISA, and apoptosis assay were used to evaluate NK-mediated cytotoxicity pathways.

    RESULTS: ELISA data indicated that MEPB at 7.5 µg/ml significantly increased the expression of IFN-γ, IL-12, IL-18, perforin, and granzyme B while decreasing IL-8 and IL-10 expression after 20 hrs of incubation. The average NK cell purity was 87.09 ± 0.043%. Breast cancer patients exhibited lower NK cell counts than healthy donors. Co-culture experiments demonstrated that NK cells induced apoptosis in MDA-MB-231 breast cancer cells in the presence of MEPB by increasing perforin, granzyme B, and IFN-γ expression in both healthy donors and breast cancer patients-experimental groups. P. bleo enhances NK cell activation, promoting the apoptosis of triple-negative human breast cancer cells (MDA-MB-231), suggesting the potential use of MEPB leaves as an anti-cancer immunostimulant.

    MeSH terms: Female; Humans; Interferon-gamma/metabolism; Cytokines/metabolism; Plant Leaves/chemistry; Cell Line, Tumor; Perforin/metabolism
  14. Petrone ME, Charon J, Grigg MJ, William T, Rajahram GS, Westaway J, et al.
    Virus Evol, 2024;10(1):veae091.
    PMID: 39619416 DOI: 10.1093/ve/veae091
    The Apicomplexa are a phylum of single-celled eukaryotes that can infect humans and include the mosquito-borne parasite Plasmodium, the cause of malaria. Viruses that infect non-Plasmodium spp. disease-causing protozoa affect the pathogen life cycle and disease outcomes. However, only one RNA virus (Matryoshka RNA virus 1) has been identified in Plasmodium, and none have been identified in zoonotic Plasmodium species. The rapid expansion of the known RNA virosphere via metagenomic sequencing suggests that this dearth is due to the divergent nature of RNA viruses that infect protozoa. We leveraged newly uncovered data sets to explore the virome of human-infecting Plasmodium species collected in Sabah, east (Borneo) Malaysia. From this, we identified a highly divergent RNA virus in two human-infecting P. knowlesi isolates that is related to the unclassified group 'ormycoviruses'. By characterizing 15 additional ormycoviruses identified in the transcriptomes of arthropods, we show that this group of viruses exhibits a complex ecology as noninfecting passengers at the arthropod-mammal interface. With the addition of viral diversity discovered using the artificial intelligence-based analysis of metagenomic data, we also demonstrate that the ormycoviruses are part of a diverse and unclassified viral taxon. This is the first observation of an RNA virus in a zoonotic Plasmodium species. By linking small-scale experimental data to advances in large-scale virus discovery, we characterize the diversity and confirm the putative genomic architecture of an unclassified viral taxon. This approach can be used to further explore the virome of disease-causing Apicomplexa and better understand how protozoa-infecting viruses may affect parasite fitness, pathobiology, and treatment outcomes.
  15. Asli NF, Mohd Matore MEE, Md Yunus M
    Heliyon, 2024 Nov 30;10(22):e40053.
    PMID: 39619579 DOI: 10.1016/j.heliyon.2024.e40053
    In assessing performance-based language assessment, the use of a valid and reliable scoring rubric is crucial to minimize measurement errors that become threats in the rating process. The validation process of rubrics which previously was based on qualitative data is not satisfying since empirical evidence is not present. Thus, drawing on the Assessment Use Argument (AUA) Validation Framework, this study aims to search for evidence to prove a claim which is Primary Trait Writing (PTW) rubrics for students self assessment activities are relevant to the construct being measured. Based on that, two warrants and one rebuttal were derived to prove the claim. The participants consisted of 149 secondary school students in a state in Malaysia and three facets identified in the study were the examinee (149 students), the rater (149 students and 3 teachers), and the trait (Content, Format, Cohesive Device, and Sentence Fluency). Many Facet Rasch Model was employed to search for evidence in approving the warrants and rejecting the rebuttal. Based on the statistical results, evidence has shown that PTW rubrics successfully discriminated between students' writing ability, and fulfilled the six basic conditions of rating scale effectiveness to a certain extent where the Cohesive Device trait became the primary concern. In addition, the fit statistics for all traits demonstrated internal consistency and the high-reliability index portrayed the criteria were well differentiated in terms of difficulty level. Thus, all evidence had shown that PTW rubrics obtained construct validity where the warrants were supported, and the rebuttal was rejected which led to the acceptance of the claim. The implication of this study highlights the importance of validating assessment rubrics to ensure their internal validity and the use of MRFM in providing comprehensive analyses of the strengths and weaknesses of the developed rubrics. The use of a primary trait type scoring rubric as a tool in students' self-assessment activities must be highlighted as more current studies are focusing on holistic and analytic scoring. Therefore, it is suggested for future research to expand the use of the Primary Trait rubrics in other type of essays and to be used in peer-assessment activities. Therefore, it is suggested for future research to expand the use of the Primary Trait rubrics in other types of essay and to be used in peer-assessment activities.
  16. Niazi FH, Luddin N, Niazy A, Mohamad S, Harun MH, Noushad M, et al.
    Saudi Dent J, 2024 Nov;36(11):1432-1437.
    PMID: 39619708 DOI: 10.1016/j.sdentj.2024.08.009
    AIM: This research assessed the mutagenicity and DNA damage of a novel type of nano-hydroxyapatite-silica glass ionomer cement (nano-HA-SiO2-GIC) and a conventional GIC (cGIC) using Ames and Comet assays.

    METHODS: Cell viability was tested on human periodontal ligament fibroblasts (HPLFs) using 3.125 mg/ml, 6.25, 12.5, 25, 50, 100 and 200 mg/ml, on both types of GICs employing MTT assay. For the Comet assay, HPLFs were treated with IC50, IC25 and IC10 of test materials and the tail moments were measured. In the Ames test, four genotypic variants of strains of Salmonella typhimurium (TA100, TA98, TA1537 and TA1535) and a strain of Escherichia coli (WP2 uvrA) were employed. The material tested was extracted using sterile distilled water (0.2 g per ml) at 37 °C for 72 h. This was considered as 100 %, which was diluted to 50, 25, 12.5 and 6.25 % utilizing sterile distilled water. These five concentrations were incubated with the bacterial strains with and without metabolic activation (S9), along with appropriate positive controls. The number of revertant colonies was used to evaluate the outcome.

    RESULTS: The highest cell viability (159.4 %) for nano-HA-SiO2-GIC was noticed at 3.125 mg/ml, while the lowest (24.26 %) was observed at 200 mg per ml. IC50, IC25 and IC10 values were 95.27, 51.4 and 20.1 mg/ml for cGIC, 106.9, 55.8 and 22.9 mg/ml for nano-HA-SiO2-GIC, respectively. The IC10 of both test materials showed no significant DNA damage compared to that of the negative control based on the Comet assay. The plate treated with nano-HA-SiO2-GIC showed less than double the average number of revertant colonies compared to that of negative control with regard to the Ames test.

    CONCLUSIONS: It can be concluded that nano-HA-SiO2-GIC is non-mutagenic based on the Ames test and did not cause DNA damage at the lowest concentration of IC10 based on the Comet assay.

  17. Mohamed S, Nik Abdul Rahman NN, Tan JY, Selvam T, Zulkifly HH, Cardiology Subspecialty Working Committee
    Hosp Pharm, 2024 Nov 29.
    PMID: 39619886 DOI: 10.1177/00185787241300293
    Introduction: In Asian countries, warfarin is still widely used for stroke prevention in non-valvular atrial fibrillation compared to non-vitamin K antagonist oral anticoagulants (NOACs) due to its affordability. A tool such as the SAMe-TT2R2 is needed to determine the probability of achieving and maintaining good anticoagulation control with warfarin therapy. However, it requires validation in the Malaysian cohort. Therefore, the objective of our study is to validate the SAMe-TT2R2 score in predicting poor anticoagulation control in Malaysia. A time in therapeutic range (TTR) 5 best predicts poor anticoagulation control with a sensitivity of 0.49 and a specificity value of 0.68. Conclusion: The SAMe-TT2R2 score, especially when exceeding 5, was associated with a higher likelihood of poor anticoagulation control, emphasizing its relevance in clinical assessment. However, its limited predictive capability, reflected by a C-statistic of 0.548, suggests the need for cautious interpretation and consideration of additional factors in anticoagulation management decisions. Continuous monitoring and personalized strategies are crucial for optimizing outcomes in this population.
  18. Arunkumar N, Gokul M, Narayanam H, Ananya AK
    Vet World, 2024 Oct;17(10):2253-2258.
    PMID: 39619938 DOI: 10.14202/vetworld.2024.2253-2258
    In recent years, a significant research effort has been underway to explore the effects of low-dose radiation (LDR). Animal models play a key role in various fields of research, including biomedicine, pharmaceutical, environmental, and behavioral studies. The use of animal models has been an invaluable tool in radiation research for understanding radiation biology, assessing radiation risks, and developing strategies for radiation protection and medical management. In the present review, the initial part focuses on the deleterious effects of high-dose radiation, and in correlation to that, in the later part of the review, the emphasis has been given to experimental approaches to explore the beneficial effects of LDR using animal models. This review could help explore the innovative approach for future research targeting the therapeutic role of LDR in various diseases, including depression, Cancer, Parkinson's disease, and Alzheimer's disease.
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