Displaying publications 501 - 520 of 1808 in total

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  1. Wee SY, Aris AZ, Yusoff FM, Praveena SM
    Ecotoxicol Environ Saf, 2024 Jan 15;270:115830.
    PMID: 38141339 DOI: 10.1016/j.ecoenv.2023.115830
    Humans are exposed to environmental risks owing to the broad usage of endocrine disrupting compounds (EDCs). However, the subjective evaluation of risk levels and characteristics, as well as the variation in risk processing, have not been thoroughly examined. The objective was to understand the public's perception of the risk associated with human exposure to environmental EDCs and identify any variations in risk perception. In this pioneering study conducted within the distinctive social and cultural context of Malaysia, a developing nation, a quantitative analysis approach was employed to assess the subjective evaluation of risk levels and characteristics among the public while developing a risk perception model. Data gathered from surveys and questionnaires were analyzed to gather information on the public's perception of environmental and health issues pertaining to pesticides, hormones, plastics, medicines, and cosmetics. The analysis revealed that the majority of the public assessed the level of human exposure to environmental risks based on experiential processing, which was influenced by cognitive and affective variables. Interestingly, a higher proportion of individuals in the community had a low risk perception of environmental EDCs, surpassing the overall risk perception by 19.3%. Furthermore, the public showed significant awareness of environmental and health issues related to pesticides, hormones, and plastics but had a lesser inclination to acknowledge the vulnerability of humans to risks associated with medicines and cosmetics. These findings suggest that the public is likely to be exposed to environmental EDCs based on their current perceived risks, and that sociopsychological factors play a significant role in shaping perceptions and judgments. This understanding can inform the development of targeted risk management strategies and interventions to mitigate the potential harm caused by environmental EDCs.
  2. Wan Dali WPE, Jan Mohamed HJ, Yusoff H
    Iran J Public Health, 2018 Aug;47(8):1098-1107.
    PMID: 30186781
    Background: The study examined the baseline findings of a controlled intervention study comprising anthropometric measurements, nutrient intakes, and physical activity among overweight or obese children in Kota Bharu, Kelantan, Malaysia.

    Methods: The study was completed in 2016 and the baseline data were gathered from four groups in a school-based randomized community trial among Year Five students from primary schools in Kota Bharu, Kelantan, Malaysia. Participants completed anthropometry assessment, three-day dietary record, and Physical Activity Questionnaire for Older Children (PAQ-C).

    Results: The prevalence of obesity was higher among the boys (52.5%). Mean energy intake was significantly higher among boys as compared to the girls (P=0.003). Twenty-five percent of the participants had exceeded the recommended nutrient intakes (RNI) of energy recommended. The calcium, thiamine, riboflavin, and niacin were also significantly higher among boys as compared to the girls (P<0.05). Boys also exhibited a significantly higher score on performance of physical activity (mean=2.68; SD=0.60) as compared to the girls (mean=2.38; SD=0.51) however it is still in the category of moderately active. Approximately 14.4% of children had a very low physical activity level.

    Conclusion: Overweight and obese boys had higher energy and fat intakes but were more physically active as compared to the girls. These findings might be useful in planning appropriate intervention strategies to be designed and delivered especially for this cohort.

  3. Yahya NA, Saub R, Nor MM, Yusoff N
    PMID: 29642311
    Dentists can offer their patients who smoke tobacco assistance with smoking cessation. We conducted this study to assess dental patient knowledge about the effects of smoking and perceptions and attitudes regarding the role of dentists in smoking cessation counselling. We conducted this study to inform tobacco cessation programs that could potentially include dentists. We conducted a cross-sectional study using a self-administered questionnaire among 375 patients. The mean age of subjects was 33.4 years; females comprised 51.5%. Participants were divided into 3 groups: those who never smoked (n = 263, 70.7%), smokers (n = 92, 24.7%), and ex-smokers (n = 17, 4.5%). Significantly more participants (p = 0.046) who never smoked (92.9%) knew smoking can cause bad breath than smokers(86.9%). Significantly more participants (p = 0.002) who never smoked (74.8%) knew smoking can cause periodontal disease than smokers (57.6%). Significantly
    more participants (p < 0.001) who never smoked (84.5%) knew smoking can cause
    oral cancer than smokers (66.7%). Significantly more participants (p < 0.001) who never smoked (86.7%) knew smoking can cause lung cancer than smokers (69.7%). Significantly more participants who never smoked (85.5%) felt dentists should be interested in the smoking status of their patients (p = 0.004) than smokers (72.6%). Significantly more participants (p = 0.08) who never smoked (69.6%) stated dentists should give smoking cessation advice than smokers/ex-smokers (59.0%). Smoker/ex-smokers had less knowledge about the effects of smoking on oral and general health than non-smokers. Both smokers/ex-smokers and non-smokers felt dentists should provide smoking cessation advice.
  4. Sivasamugham LA, Cardosa MJ, Tan WS, Yusoff K
    J Med Virol, 2006 Aug;78(8):1096-104.
    PMID: 16789020
    The complete VP1 protein of EV71 was truncated into six segments and fused to the C-terminal ends of full-length nucleocapsid protein (NPfl) and truncated NP (NPt; lacks 20% amino acid residues from its C-terminal end) of newcastle disease virus (NDV). Western blot analysis using anti-VP1 rabbit serum showed that the N-terminal region of the VP1 protein contains a major antigenic region. The recombinant proteins carrying the truncated VP1 protein, VP1(1-100), were expressed most efficiently in Escherichia coli as determined by Western blot analysis. Electron microscopic analysis of the purified recombinant protein, NPt-VP(1-100) revealed that it predominantly self-assembled into intact ring-like structures whereas NPfl-VP(1-100) recombinant proteins showed disrupted ring-like formations. Rabbits immunized with the purified NPt-VP(1-100) and NPfl-VP(1-100) exhibited a strong immune response against the complete VP1 protein. The antisera of these recombinant proteins also reacted positively with authentic enterovirus 71 and the closely related Coxsackievirus A16 when analyzed by an immunofluorescence assay suggesting their potential as immunological reagents for the detection of anti-enterovirus 71 antibodies in serum samples.
  5. Tan GH, Yusoff K, Seow HF, Tan WS
    J Med Virol, 2005 Dec;77(4):475-80.
    PMID: 16254965
    The immunodominant region of hepatitis B virus (HBV) located in the viral small surface antigen (S-HBsAg) elicits virus-neutralizing and protective antibodies. In order to develop an easy and inexpensive method to produce this region without the need for extensive purification, amino acid residues 111-156 of S-HBsAg were fused to the C-terminal end of the 10B capsid protein of T7 phage. Western blotting and ELISA confirmed the expression of the recombinant protein on the surface of the phage particles. The recombinant phage exhibited the antigenic and immunogenic characteristics of HBsAg, illustrating its potential as an immunological reagent and vaccine.
  6. Ho KL, Yusoff K, Seow HF, Tan WS
    J Med Virol, 2003 Jan;69(1):27-32.
    PMID: 12436474
    M13 phages that display random disulfide constrained heptapeptides on their gpIII proteins were used to select for high affinity ligands to hepatitis B core antigen (HBcAg). Phages bearing the amino acid sequences C-WSFFSNI-C and C-WPFWGPW-C were isolated, and a binding assay in solution showed that these phages bind tightly to full-length and truncated HBcAg with K D rel values less than 25 nM, which is at least 10 orders of magnitude higher than phage carrying the peptide sequence LLGRMK selected from a linear peptide library. Both the phages that display the constrained peptides were inhibited from binding to HBcAg particles by a monoclonal antibody that binds specifically to the immunodominant region of the particles. A synthetic heptapeptide with the amino acid sequence WSFFSNI derived from one of the fusion peptides inhibits the binding of large surface antigen (L-HBsAg) to core particles with an IC50 value of 12 +/- 2 microM. This study has identified a smaller peptide with a greater inhibitory effect on L-HBsAg-HBcAg association.
  7. Nasuruddin H, Che Yusoff MA, Che Ahmad A, Rosdi MH
    Cureus, 2024 Nov;16(11):e73848.
    PMID: 39691140 DOI: 10.7759/cureus.73848
    The increasing prevalence of proximal humerus fractures in the elderly population, particularly osteoporotic fractures, necessitates a biomechanical evaluation of Kirschner wire (K-wire) configurations used in percutaneous fixation. This study investigates the stability of different K-wire configurations and examines the effect of wire size and type (smooth vs. threaded). Using 27 synthetic humeri models, we compare three configurations as follows: four parallel ascending K-wires (box-type), two ascending and two descending K-wires, and a combination of both. Results show that adding descending K-wires significantly enhances stability, particularly against torsional forces. This study highlights the importance of wire type and configuration in stabilizing proximal humerus fractures. Multiplanar constructs with descending K-wires, especially threaded ones, offer better stability. These insights help improve surgical techniques for elderly and osteoporotic patients, but further research using cadaver models is needed for clinical validation.
  8. Yusoff MS, Abdul Rahim AF, Yaacob MJ
    Malays J Med Sci, 2010 Jan;17(1):30-7.
    PMID: 22135523 MyJurnal
    Being in medical school has always been regarded as highly stressful. Excessive stress causes physical and mental health problems. Persistent stress can impair students' academic achievement and personal or professional development. The aim of this study is to explore the nature of stress among medical students by determining the prevalence, sources and pattern of stress and the factors affecting it.
  9. Sheikh MK, Yusoff NM, Kaur G, Khan FA
    Malays J Med Sci, 2007 Jul;14(2):54-7.
    PMID: 22993492 MyJurnal
    This case report describes a 35-year-old lady who presented with generalized weakness and lethargy of two weeks duration and jaundice of more than 20 years duration. Her initial workup was suggestive of haemolysis and blood film showed a leucoerythoblastic picture with moderate microspherocytes. She was finally diagnosed as a case of hereditary spherocytosis after ruling out other possible causes of chronic haemolysis and supported by an abnormal osmotic fragility test, although family members refused for screening. Hereditory spherocytosis is uncommon in Malay population and presentation with jaundice of 20 years duration with leucoerythroblastic picture on blood film were interesting features in this case. Patient is being followed closely for need of splenectomy in near future as per severity of haemolysis and currently being managed with folic acid supplement.
  10. Seman K, Yaacob H, Hamid AM, Ismail AR, Yusoff A
    Malays J Med Sci, 2008 Apr;15(2):33-8.
    PMID: 22589623
    Involvement of oral health educators among non-health professionals in oral health promotion is important in the prevention of oral diseases. This study was carried out to compare the level of oral health knowledge among pre-school teachers before and after oral health seminar. Pre-test data was collected by distributing questionnaire to pre-school teachers in Pasir Mas, who attended the seminar on "Oral Health" (n=33) and they were required to fill anonymously before the seminar started. The questions consisted of information on general background, perceived oral health status, oral health knowledge and the environment where they work. After two weeks, post-test data was collected using the same structured questionnaire and identification code was used to match the pre and post data. SPSS 11.5 was use for statistical analysis. Two out of 33 eligible preschool teachers were considered non-respondents due to absenteeism during the post-test data collection. The response rate was 94.0% (n = 31). The study shows a significant improvement in oral health knowledge among pre-school teachers in Pasir Mas, after seminar (p < 0.001) as compared to controls. Thus, we can conclude that the oral health programme (seminar) appeared effective at influencing oral health educator's knowledge towards oral health.
  11. Hassan AB, Begum T, Reza MF, Yusoff N
    Malays J Med Sci, 2016 Nov;23(6):70-82.
    PMID: 28090181 MyJurnal DOI: 10.21315/mjms2016.23.6.8
    Previous studies have revealed that self-related tasks (items) receive more attention than non-self-related, and that they elicit event-related potential (ERP) components with larger amplitudes. Since personality has been reported as one of the biological correlates influencing these components, as well as our behavioural differences, it is important to examine how it affects our self-consciousness in relation to tasks of varied relevance and the neurological basis.
  12. Saidin NIS, Noor NHM, Yusoff SM, Sauli MS
    Malays J Med Sci, 2023 Aug;30(4):61-70.
    PMID: 37655148 DOI: 10.21315/mjms2023.30.4.6
    BACKGROUND: Haemolytic transfusion reactions (HTRs) due to anti-A and anti-B antibodies in Group O blood products are rare but potentially fatal. This study aimed to identify the prevalence of high ABO antibody titre and the immunoglobulin (Ig) classes (IgM only or with IgG) and the prevalence of haemolysin antibodies in Group O blood donors.

    METHODS: Plasma from Group O blood donors was tested by using antibody titration at room temperature. Titres ≥ 64 were considered high. The plasma was treated with 0.01 M dithiothreitol (DTT) to determine the presence of IgG antibodies and titre. IgG titres ≥ 64 were considered high. Tests for haemolysis were conducted by mixing the plasma with 3% fresh A1 and B cell suspensions and incubating at 37 °C. The haemolysis was observed macroscopically.

    RESULTS: Of 311 donors, 238 (76.5%) showed high anti-A and/or anti-B antibody titres. The highest antibody titre obtained was 256. Female and younger donors (< 40 years old) had higher anti-A and anti-B titres. The anti-B titre showed an association with gender (P < 0.001), and was high in female donors (77.8%). Males aged over 50 years old were found to have low mean titre antibodies. Most donors had both IgM and IgG ABO antibodies. The prevalence of haemolysins in our population was 3.5%.

    CONCLUSION: Most of our O blood donors had a high ABO antibody titre but a low prevalence of haemolysins. Males aged over 50 years old are the best O donors for preventing HTRs, particularly when mismatch transfusion is required. We recommend a transfusion unit screen for ABO antibody titre in younger female donors (< 40 years old), to prevent the transfusion of high titre O blood products into non-O recipients.

  13. Ngah H, Hairon SM, Yaacob NM, Yusoff H
    Malays J Med Sci, 2019 Jul;26(4):70-78.
    PMID: 31496895 MyJurnal DOI: 10.21315/mjms2019.26.4.8
    BACKGROUND: Death resulting from the acquired immunodeficiency syndrome (AIDS) is a worldwide concern. This study is aimed at determining the overall median survival time, and the prognostic factors of mortality among AIDS-infected patients in North-East Peninsular Malaysia.

    METHODS: In 2018, a retrospective cohort study stretching from January to April was conducted. This study involved a review of data obtained from the National AIDS Registry. A total of 1,073 AIDS cases diagnosed from 1 January 2010 to 31 December 2014 were selected, and follow-up procedures were conducted until 31 March 2015 (a 3-month follow-up). The Kaplan-Meier plot and Cox's proportional hazard regression were used for data analyses.

    RESULTS: 564 (52.5%) patients died due to AIDS, while the remaining 509 (47.4%) were censored. The overall median survival time was 11 months. The probability of survival in 1-year, 2-year, 3-year, 4-year and 5-year periods were 49.1%, 47.8%, 47.3%, 47.0% and 46.7%, respectively. Multiple Cox regression revealed that the significant prognostic factors were age 30-49 years [adjusted hazard ratio (Adj. HR) 1.57; 95% CI: 1.14, 2.16; P = 0.006], male (Adj. HR 1.39; 95% CI: 1.07, 1.79; P = 0.012), unemployed (Adj. HR 1.40; 95% CI: 1.12, 1.75; P = 0.003) and HIV-TB co-infection (Adj. HR 1.78; 95% CI: 1.37, 2.31; P < 0.001).

    CONCLUSION: The overall median survival time among AIDS patients in North-East Peninsular Malaysia was revealed to be short, in comparison to the other studies. The chances for survival can be improved with more emphasis on early detection (to ensure early treatment) and social support, particularly for HIV-TB co-infected patients, as well as for younger and unemployed patients.

  14. See SA, Bhassu S, Tang SS, Yusoff K
    Dev Comp Immunol, 2025 Jan;162:105264.
    PMID: 39299363 DOI: 10.1016/j.dci.2024.105264
    White spot syndrome virus (WSSV) causes highly destructive infection in crustacean aquaculture, often resulting in 100% mortality within a week. However, there is lack of studies addressing the safety issues of WSSV vaccines in shrimps. In this study, WSSV VP28 mRNA vaccines were developed using codon deoptimization approach. These vaccines were administered to Litopenaeus vannamei shrimps at various dosages to access their safety and the shrimps' immune responses using quantification PCR (qPCR). The findings of this study indicate that the expression level of codon deoptimized VP28 mRNA vaccines are lower compared to the wild type VP28 vaccines, as observed through a comparison of bioinformatic predictions and experimental results. Additionally, the total haemocyte count (THC) in shrimps injected with codon deoptimized VP28 vaccine was higher than those injected with wild type VP28 vaccines. Furthermore, the expression of immune-related genes differed between codon deoptimized and wild type VP28 vaccines. In summary, the results suggest that 0.01 μg codon deoptimized VP28-D1 mRNA vaccine is the most promising WSSV mRNA vaccine, displaying low pathogenicity and expression in shrimps. To the best of our knowledge, this research represents the first attempt to attenuate WSSV using codon deoptimization method and development of a potential mRNA vaccine for shrimp purpose. The study addresses an important gap in shrimp vaccine research, offering potential solutions for WSSV control in shrimps.
  15. Yusoff MZM, Ruzlin ANM, Mohamad M, Zainuddin MA
    J Vector Borne Dis, 2025 Jan 10.
    PMID: 39792448 DOI: 10.4103/JVBD.JVBD_127_24
    BACKGROUND OBJECTIVES: Dengue is now endemic in over 100 countries, with Asia bearing over 70% of the global burden. In Malaysia, dengue cases have increased dramatically, particularly in Pulau Pinang, where cases rose from 1,621 in 2022 to 7,343 in 2023. To examine factors associated with dengue outbreaks in Pulau Pinang in 2023 by comparing outbreak cases with single cases.

    METHODS: Cross-sectional study using eDengue database, the Malaysian National Dengue Registry.

    RESULTS: The study included 1,106 confirmed dengue cases, with 553 categorised as outbreak cases and 553 as single cases. Significant associations were found between dengue outbreaks and Priority Locality 1 (areas with Uncontrolled Outbreaks/ Hotspots/ Recurrent Outbreaks/ Dengue Deaths in the previous year) (AOR: 0.15, 95% CI: 0.06,0.37, p<0.001), Aedes Index ≥1% (AOR: 1.35, 95% CI: 1.02,1.77, p=0.031), patients initially visiting government clinics (AOR: 1.63, 95% CI: 1.10,2.43, p=0.015), hospitalized dengue patients (AOR: 0.70. 95%CI: 0.52,0.96, p=0.029), the time taken from notification to source reduction (AOR: 0.57, 95% CI: 0.50,0.66, p<0.001) and time taken from notification to investigation (AOR: 2.40 95%CI: 1.77,3.24, p<0.001).

    INTERPRETATION CONCLUSION: This study identifies key factors associated with dengue outbreaks in Pulau Pinang such as Aedes Index, Priority Locality 1 areas and initial visits to government clinics. These findings underscore the need for targeted vector control and early intervention in high-risk areas to reduce outbreak risk. Early healthcare seeking behavior and timely intervention are critical in managing the spread of dengue. Further research is needed to explore additional factors and improve public health strategies.

  16. Norazman TA, Yusoff S, Mohd Niza Nizal H, Taib F
    Malays J Med Sci, 2023 Aug;30(4):175-192.
    PMID: 37655138 DOI: 10.21315/mjms2023.30.4.15
    BACKGROUND: Domestic violence has a significant impact on growing children. However, existing evidence is limited and often under reported. Consequently, the Child Exposure to Domestic Violence (CEDV) scale has been developed for global use. This study aims to provide a cross-cultural translation, adaptation and validation of the CEDV based on Malay language.

    METHODS: CEDV scale was translated from the original English version to Malay. Content and face validity were examined before field-testing. The study comprised a cross sectional study using the Malay version of the CEDV (CEDV-M) scale conducted at a secondary school in Perlis, Malaysia and investigated 235 children aged 13 years old-16 years old using an online platform. The construct validity, internal consistency and stability of the tool were assessed.

    RESULTS: The CEDV-M scale's content and face validity both yielded a value exceeding 0.80. Furthermore, the tool demonstrated has good stability reliability, using the intra-class correlation value for all items ranging from 0.659 to 1.00. The exploratory factor analysis of the 36 items of the CEDV scale revealed possibilities of five or six factor domains. However, the five factor domains were most conceptually equivalent. Consequently, this study found that the CEDV-M scale is reliable with a total Cronbach's alpha of 0.87.

    CONCLUSION: CEDV-M scale is a valid and reliable tool for measuring a child's experience of domestic violence. Future studies recommend confirmatory factor analysis and standard settings for scoring systems.

  17. Cheng KY, Yusoff DM, Ismail H, Naing NN
    Malays J Med Sci, 2018 Sep;25(5):115-127.
    PMID: 30914868 MyJurnal DOI: 10.21315/mjms2018.25.5.11
    BACKGROUND: The aim of the present study was to determine the validity and reliability of the Malay versions of the Incontinence Praying Ability (I-PA) and the Incontinence Quality of Life (I-QoL) questionnaires among childbearing-aged Muslim women.

    METHODS: This cross-sectional study included 338 childbearing-aged Muslim women (mean age: 31.1 years; SD = 5.57) who attended clinics at Hospital Universiti Sains Malaysia. Confirmatory factor analysis was conducted to determine the construct validity of the Malay versions of the I-PA and the I-QoL, while composite reliability was used to examine their internal consistency reliability.

    RESULTS: The hypothesised models of the I-PA and the I-QoL consisted of 10 items with one latent variable and 22 items with three latent variables, respectively. The hypothesised models of the I-PA and the I-QoL did not have good fit. Modifications included co-varying the residual terms for items within the subscales, which resulted in improved fit indices for the I-PA (CFI = 0.976 TLI = 0.961, RMSEA = 0.068) and the I-QoL (CFI = 0.948, TLI = 0.938, RMSEA = 0.063). The composite reliability of the I-PA was 0.93, and the I-QoL ranged from 0.91 to 0.94.

    CONCLUSION: The Malay versions of the I-PA and I-QoL were considered to be valid, reliable questionnaires measuring incontinence QoL among Muslim women of childbearing age.

  18. Miskandar MS, Man YC, Yusoff MS, Rahman RA
    Asia Pac J Clin Nutr, 2005;14(4):387-95.
    PMID: 16326646
    Optimum processing conditions on palm oil-based formulations are required to produce the desired quality margarine. As oils and fats contribute to the overall property of the margarine, this paper will review the importance of beta' tending oils and fats in margarine formulation, effects of the processing parameters -- emulsion temperature, flow-rate, product temperature and pin-worker speed -- on palm oil margarines produced and their subsequent behaviour in storage. Palm oil, which contributes the beta' crystal polymorph and the best alternative to hydrogenated liquid fats, and the processing conditions can affect the margarine consistency by influencing the solid fat content (SFC) and the types of crystal polymorph formed during production as well as in storage. Palm oil, or hydrogenated palm oil and olein, in mixture with oils of beta tending, can veer the product to the beta' crystal form. However, merely having beta' crystal tending oils is not sufficient as the processing conditions are also important. The emulsion temperature had no significant effect on the consistency and polymorphic changes of the product during storage, even though differences were observed during processing. The consistency of margarine during storage was high at low emulsion flow-rates and low at high flow rates. The temperature of the scraped-surface tube-cooler is the most important parameter in margarine processing. High temperature will produce a hardened product with formation of beta-crystals during storage. The speed of the pin-worker is responsible for inducing crystallization but, at the same time, destroys the crystal agglomerates, resulting in melting.
  19. Ali M, Wahab IBA, Huri HZ, Yusoff MS
    Syst Rev, 2024 Apr 02;13(1):99.
    PMID: 38566190 DOI: 10.1186/s13643-024-02478-4
    BACKGROUND: Personalised learning, an educational approach that tailors teaching and learning to individual needs and preferences, has gained attention in recent years, particularly in higher education. Advances in educational technology have facilitated the implementation of personalised learning in various contexts. Despite its potential benefits, the literature on personalised learning in health sciences higher education remains scattered and heterogeneous. This scoping review aims to identify and map the current literature on personalised learning in health sciences higher education and its definition, implementation strategies, benefits, and limitations.

    METHODS: A comprehensive search of electronic databases, PubMed, Scopus, Google Scholar, Educational Research Complete, and Journal Storage (JSTOR), will be conducted to identify relevant articles. The search will be limited to articles published in the English language between 2000 and 2023. The search strategy will be designed and adapted for each database using a combination of keywords and subject headings related to personalised learning and health sciences higher education. Eligibility criteria will be applied to screen and select articles. Data extraction and quality assessment will be performed, and thematic synthesis will be used to analyse the extracted data.

    DISCUSSION: The results of the scoping review will present a comprehensive and coherent overview of the literature on personalised learning in health sciences higher education. Key themes and topics related to personalised learning, its definitions, models, implementation strategies, benefits, and limitations, will be identified. The geographical and temporal distribution of research on personalised learning in health sciences higher education will also be described. This scoping review will provide a structured synthesis of the available evidence on personalised learning in health sciences higher education, highlighting potential gaps and areas for future research. The findings will contribute to ongoing scholarly and policy debates on personalised learning in higher education, informing the development of best practices, guidelines, and future research agendas.

  20. Yusoff NA, Abd Hamid Z, Budin SB, Taib IS
    PeerJ, 2025;13:e18854.
    PMID: 39897489 DOI: 10.7717/peerj.18854
    Stem cells are special cells with the distinctive capability to self-renew, forming a new pool of undifferentiated stem cells. They are also able to differentiate into lineage-specific cell types that are specialized and matured. Thus, stem cells are considered as the building blocks of tissues and organs in which they reside. Among the many types of stem cells, hematopoietic stem cells (HSCs) are the most studied adult stem cells and are considered as a promising source of cells for applications in the clinical and basic sciences. Historically, research on HSCs was initiated in the 1940s, where in a groundbreaking experiment, intravenously injected bone marrow (BM) cells prevented the death of irradiated mice by restoring blood cell production. Since then, HSCs have been studied and utilized in medical therapies and research for over several decades. Over time, more sophisticated tools have been developed to evaluate the behaviour of specifically purified subsets of hematopoietic cells that have the capacity to produce blood cells. One of the established tools is the colony-forming units (CFUs) assay. This assay facilitates the identification, enumeration, and analysis of colonies formed by differentiated hematopoietic stem and progenitor cells (HSPCs) from myeloid, erythroid and lymphoid lineages. Hence, the CFUs assay is a fundamental in vitro platform that allows functional studies on the lineage potential of an individual HSPCs. The outcomes of such studies are crucial in providing critical insights into hematopoiesis. In this review, we explore the fundamental discoveries concerning the CFUs assay by covering the following aspects: (i) the historical overview of the CFUs assay for the study of clonal hematopoiesis involving multilineage potential of HSPCs, (ii) its use in various experimental models comprising humans, mice/rodents, zebrafish and induced pluripotent stem cells (iPSCs) and (iii) research gaps and future direction concerning the role of CFUs assay in clinical and basic sciences. Overall, the CFUs assay confers a transformative platform for a better understanding of HSPCs biology in governing hematopoiesis.
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