Displaying publications 181 - 200 of 342 in total

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  1. Sarmiento ME, Chin KL, Lau NS, Ismail N, Norazmi MN, Acosta A, et al.
    Curr Issues Mol Biol, 2022 Nov 25;44(12):5866-5878.
    PMID: 36547060 DOI: 10.3390/cimb44120399
    Carcinoscorpius rotundicauda (C. rotundicauda) is one of the four species of horseshoe crabs (HSCs). The HSC hemocytes store defense molecules that are released upon encountering invading pathogens. The HSCs rely on this innate immunity to continue its existence as a living fossil for more than 480 million years. To gain insight into the innate mechanisms involved, transcriptomic analysis was performed on isolated C. rotundicauda hemocytes challenged with lipopolysaccharides (LPS), the main components of the outer cell membrane of gram-negative bacteria. RNA-sequencing with Illumina HiSeq platform resulted in 232,628,086 and 245,448,176 raw reads corresponding to 190,326,253 and 201,180,020 high-quality mappable reads from control and LPS-stimulated hemocytes, respectively. Following LPS-stimulation, 79 genes were significantly upregulated and 265 genes were downregulated. The differentially expressed genes (DEGs) were related to multiple immune functional categories and pathways such as those of the cytoskeleton, Toll and Imd, apoptosis, MAP kinase (MAPK), inositol phosphate metabolism, phagosome, leucocyte endothelial migration, and gram-negative bacterial infection, among others. This study provides important information about the mechanisms of response to LPS, which is relevant for the understanding the HSCs' immune response.
  2. Christopher CM, Blebil AQ, Kc B, Alex D, Mohamed Ibrahim MI, Rajakumar S, et al.
    Value Health Reg Issues, 2023 Feb 24;35:34-41.
    PMID: 36842337 DOI: 10.1016/j.vhri.2023.01.007
    OBJECTIVES: This study aimed to translate the Medication Use Questionnaire into a Malay version, adapt it to Malaysia's culture, and verify its reliability among Malaysia's older adults.

    METHODS: Methodological approaches were used to translate, validate, and modify the questionnaire. The subjects were older adults aged ≥ 60 years in primary care settings in Penang, Malaysia. Two forward translations (English to Malay) were developed, reviewed, and back translated to English. The reconciliation phase was conducted to compare the translated and original questionnaires. Five older adults were then interviewed for the cognitive debriefing of the reconciled questionnaire to assess the linguistic and cultural equivalence. Two experts assessed content validity, and the translated questionnaire was proofread and finalized. After that, pilot test was done to examine the internal consistency among 20 older adults.

    RESULTS: Translation of the questionnaire was done with no major disagreements. The main issues identified in cognitive debriefing and content validity were terms, number of questions, and phrases used in the questionnaire. Most participants reported that the questionnaires were not difficult to complete during the cognitive debriefing phase. The issues were then judged and revised accordingly. Further pilot testing on 20 older adults demonstrated good internal consistency reliability, Cronbach α (0.902).

    CONCLUSIONS: This study findings suggest promising data supporting the use of translated version of the Medication Use Questionnaire that can be used to identify medication use problems among older adults in Malaysia.

  3. Ellan K, Thayan R, Raman J, Hidari KIPJ, Ismail N, Sabaratnam V
    BMC Complement Altern Med, 2019 Sep 18;19(1):260.
    PMID: 31533688 DOI: 10.1186/s12906-019-2629-y
    BACKGROUND: Dengue is a mosquito-borne viral infection that has become a major public health concern worldwide. Presently, there is no specific vaccine or treatment available for dengue viral infection.

    METHODS: Lignosus rhinocerotis, Pleurotus giganteus, Hericium erinaceus, Schizophyllum commune and Ganoderma lucidium were selected for evaluation of their in-vitro anti-dengue virus serotype 2 (DENV-2) activities. Hot aqueous extracts (HAEs), ethanol extracts (EEs), hexane soluble extracts (HSEs), ethyl acetate soluble extracts (ESEs) and aqueous soluble extracts (ASEs) were prepared from the selected mushrooms. The cytotoxic effects of the extracts were evaluated by the MTT assay. The anti-DENV-2 activities of the extracts were evaluated in three different assays: simultaneous, attachment and penetration assays were perfomed using plaque reduction assays and RT-qPCR assays. The effect of the addition time on viral replication was assessed by the time of addition assay, and a virucidal assay was carried out to evaluate the direct effect of each mushroom extract on DENV-2. The chemical composition of glucans, and the protein and phenolic acid contents in the extracts were estimated.

    RESULTS: We found that the HAEs and ASEs of L. rhinocerotis, P. giganteus, H. erinaceus and S. commune were the least toxic to Vero cells and showed very prominent anti-DENV2 activity. The 50% inhibitory concentration (IC50) values of the ASEs ranged between 399.2-637.9 μg/ml, while for the HAEs the range was 312.9-680.6 μg/ml during simultaneous treatment. Significant anti-dengue activity was also detected in the penetration assay of ASEs (IC50: 226.3-315.4 μg/ml) and HAEs (IC50: 943.1-2080.2 μg/ml). Similarly, we observed a marked reduction in the expression levels of the ENV and NS5 genes in the simultaneous and penetration assays of the ASEs and HAEs. Time-of-addition experiments showed that the highest percent of anti-DENV2 activity was observed when the mushroom extracts were added immediately after virus adsorption. None of the extracts exhibited virucidal effect. Chemical composition analysis showed that the major components in the mushroom HAEs and ASEs were glucan (beta D-glucan) and proteins, however, there was no significant correlation between the anti-dengue activity and the concentration of glucans and proteins.

    CONCLUSION: These findings demonstrated the potential of mushroom extracts as anti-dengue therapeutic agents with less toxic effects.

  4. Abu Bakar SA, Syed Mohamed Shahruddin SNS, Ismail N, Wan Md Adnan WAH
    PeerJ, 2022;10:e13694.
    PMID: 35935256 DOI: 10.7717/peerj.13694
    The estimation of biological age (BA) is an important asymptomatic measure that can be used to understand the physical changes and the aging process of a living being. Factors that contribute towards profiling the human biological age can be diverse. Therefore, this study focuses on developing a BA model for patients with Chronic Kidney Disease (CKD). The procedure commences with the selection of significant biomarkers using a correlation test. Appropriate weighting is then assigned to each selected biomarker using the indexing method to produce a BA index. The BA index is matched to the age variation within the sample to acquire additional terms for the chronological age leading ultimately to the estimated BA. From a sample of 190 patients (133 trained data and 57 testing data) obtained from the University of Malaya Medical Centre (UMMC), Malaysia, the intensity of the BA is found to be between three to nine years from the chronological age. Visual observations further validate the high similarities between the training and testing data sets.
  5. Mahlia TMI, Ismail N, Hossain N, Silitonga AS, Shamsuddin AH
    Environ Sci Pollut Res Int, 2019 May;26(15):14849-14866.
    PMID: 30937750 DOI: 10.1007/s11356-019-04563-x
    Due to global warming and increasing price of fossil fuel, scientists all over the world have been trying to find reliable alternative fuels. One of the most potential candidates is renewable energy from biomass. The race for renewable energy from biomass has long begun and focused on to combat the deteriorating condition of the environment. Palm oil has been in the spotlight as an alternative of bioenergy sources to resolve fossil fuel problem due to its environment-friendly nature. This review will look deep into the origins of palm oil and how it is processed, bioproducts from this biomass, and oil palm biomass-based power plant in Malaysia. Palm oil is usually processed from oil palm fruits and other parts of the oil palm plant are candidates for raw material of bioproduct generation. Oil palm biomass can be turned into three subcategories: bioproduct, biofuels, and biopower. Focusing on biofuel, the biodiesel from palm oil will be explored in detail and its implication in Malaysia as one of the biggest producers of oil palm in the world will also be emphasized comprehensively. The paper presents the detail of a schematic flow diagram of a palm oil mill process of transforming oil palm into crude palm oil and it wastes. This paper will also discuss the current oil palm biomass power plants in Malaysia. Palm oil has been proven itself as a potential alternative to reduce negative environmental impact of global warming.
  6. Ahmad A, Abdullah SRS, Hasan HA, Othman AR, Ismail N'
    Environ Sci Pollut Res Int, 2022 Jan;29(2):2579-2587.
    PMID: 34374006 DOI: 10.1007/s11356-021-15541-7
    The performance of local plants was tested using synthetic turbid water resembling real wastewater by measuring their ability to remove turbidity. The selected plants were A. indica, S. palustris, D. linearis, S. polyanthum, M. esculenta, P. sarmentosum, and M. malabathricum which can easily be found locally. The experiment was run based on coagulant dosages varied from 0 to 10 g/L for each plant with a rapid mixing speed at 180 rpm for 3 min, slow mixing speed at 10 rpm for 20 min, and settling time for 30 min. The results demonstrated that each plant has been capable of reducing turbidity by different amounts, with an increase in the coagulant dosage. The optimum coagulant dosages achieved for A. indica, S. palustris, S. polyanthum, and D. linearis were 10 g/L with turbidity removal at 26.9%, 24.9%, 24.9%, and 17.5%, respectively. P. sarmentosum and M. esculenta attained optimum coagulant dosages at 5 g/L with turbidity removal at 24.2% and 22.2%, and lastly M. malabathricum at 0.1 g/L (12.2%). P. sarmentosum was suggested to the best natural coagulant which achieved the highest removal of turbidity with a low dosage used.
  7. Christopher CM, Loong MCW, Blebil AQ, Kc B, Alex D, Ibrahim MIM, et al.
    Arch Gerontol Geriatr, 2023 Aug;111:105007.
    PMID: 37001287 DOI: 10.1016/j.archger.2023.105007
    BACKGROUND: Primary care providers help older adults with medication use problems in Malaysia and globally. They help older adults with medication management, appropriate use, and administration; however, their perspectives and challenges regarding medication use problems in older adults have not been adequately explored.

    METHODS: The study used a qualitative methodology comprising 30 in-depth interviews among general practitioners and pharmacists in Penang, Malaysia, in public and private primary care settings. Participants were recruited based on purposive sampling. Interviews were transcribed verbatim, and data were coded based on the principles of thematic analysis in NVivo.

    OBJECTIVE: This study aims to understand primary care providers' perspectives and challenges regarding medication use problems experienced by older adults.

    RESULTS: Six themes emerged from the study. Theme one highlighted the pharmaceutical care needs of older adults with sensory impairments and accessibility issues. The second and third themes explored medicines management support and potentially inappropriate medication use. Theme four supported collaborative practice, prescribing, and deprescribing among primary health care providers. Theme five discussed health service delivery aligned to older adults' health care needs. The final theme emphasised social and welfare support.

    CONCLUSION: This study identified various challenges professional primary care providers face in providing aligned healthcare services for older adults and proposed recommendations for further strengthening healthcare quality. Inputs from the primary healthcare system frontier are essential to reduce the challenges and uplift the quality of ageing populations' healthcare in Malaysia.

  8. Sharani ZZ, Ismail N, Yasin SM, Isa MR, Razali A, Sherzkawee MA, et al.
    PLoS One, 2023;18(6):e0287374.
    PMID: 37319310 DOI: 10.1371/journal.pone.0287374
    INTRODUCTION: Loss to follow-up (LTFU) and smoking during TB treatment are major challenges for TB control programs. Smoking increases the severity and prolongs TB treatment duration, which lead to a higher rate of LTFU. We aim to develop a prognostic scoring tool to predict LTFU among TB patients who smoke to improve successful TB treatment outcomes.

    MATERIALS AND METHODS: The development of the prognostic model utilized prospectively collected longitudinal data of adult TB patients who smoked in the state of Selangor between 2013 until 2017, which were obtained from the Malaysian Tuberculosis Information System (MyTB) database. Data were randomly split into development and internal validation cohorts. A simple prognostic score (T-BACCO SCORE) was constructed based on the regression coefficients of predictors in the final logistic model of the development cohort. Estimated missing data was 2.8% from the development cohort and was completely at random. Model discrimination was determined using c-statistics (AUCs), and calibration was based on the Hosmer and Lemeshow goodness of fit test and calibration plot.

    RESULTS: The model highlights several variables with different T-BACCO SCORE values as predictors for LTFU among TB patients who smoke (e.g., age group, ethnicity, locality, nationality, educational level, monthly income level, employment status, TB case category, TB detection methods, X-ray categories, HIV status, and sputum status). The prognostic scores were categorized into three groups that predict the risk for LTFU: low-risk (<15 points), medium-risk (15 to 25 points) and high-risk (> 25 points). The model exhibited fair discrimination with a c-statistic of 0.681 (95% CI 0.627-0.710) and good calibration with a nonsignificant chi-square Hosmer‒Lemeshow's goodness of fit test χ2 = 4.893 and accompanying p value of 0.769.

    CONCLUSION: Predicting LTFU among TB patients who smoke in the early phase of TB treatment is achievable using this simple T-BACCO SCORE. The applicability of the tool in clinical settings helps health care professionals manage TB smokers based on their risk scores. Further external validation should be carried out prior to use.

  9. Daud NM, Abdullah SRS, Hasan HA, Othman AR, Ismail N'
    Heliyon, 2023 Jun;9(6):e17284.
    PMID: 37389087 DOI: 10.1016/j.heliyon.2023.e17284
    The batik industry has been one of the main family businesses in most of the east-coast region of the Malaysian peninsula for many years. However, appropriate water treatment is still a major challenge for this industry. Stringent laws introduced by the Malaysian authorities and the intention to protect the environment are factors that drive researchers to search for suitable, appropriate, affordable and efficient treatment of batik wastewater. Treatment research on batik wastewater is still lacking and coagulation-flocculation treatment using alum was introduced and chosen as a stepping stone toward the selection of green coagulants. This study aimed to determine the best conditions for alum flocculation-coagulation using a standard jar test method. Four main factors were investigated: alum dosage (0.1-3.5 g/L), pH (4-11), settling time (0.5-24 h) and rapid mixing rate (100-300 rpm). Results obtained were further analysed statistically using SPSS software prior to determining the significant effect of variable changes. From this study, the best conditions for batik wastewater treatment using the flocculation-coagulation process were found to be at alum dosage of 1.5 g/L, pH 8, 4 h settling time and a rapid mixing rate of 100 rpm. Chemical oxygen demand (COD), turbidity, colour and total suspended solids (TSS) were removed by 70.7, 92.2, 88.4 and 100%, respectively, under these conditions. This study showed that batik wastewater can be treated by the coagulation-flocculation process using chemical means of alum. This indicates the need for forthcoming developments in natural-based-coagulant-flocculants toward the sustainability of the batik industry.
  10. En ETS, Ismail N, Nasir NSM, Ismadi YKM, Zuraina NMNN, Hassan SA
    J Infect Public Health, 2023 Jul;16(7):1089-1092.
    PMID: 37224619 DOI: 10.1016/j.jiph.2023.05.015
    Hypervirulent Klebsiella pneumoniae (hvKp) is an emerging pathotype in addition to classical Klebsiella pneumoniae, with its ability to cause life-threatening, community-acquired metastatic infections even in healthy individuals. We presented a case of cerebral abscess preceded by otitis media in a 10-year-old child caused by hvKp. The isolates from blood pus aspirate were later identified as K. pneumoniae capsular serotype K2 and closely related to sequence type (ST65), with multiple hypervirulent genes detected (rmpA, rmpA2, iucA and peg344). She succumbed to death despite surgical drainage and susceptible antibiotic therapy. Clinicians should be cognizant of the rising incidence of hvKp infections in pediatric populations.
  11. Cheng MZSZ, Amin FAZ, Zawawi N, Chan KW, Ismail N, Ishak NA, et al.
    Nutrients, 2023 Jun 22;15(13).
    PMID: 37447162 DOI: 10.3390/nu15132835
    Diabetes is associated with an imbalance between oxidants and antioxidants, leading to oxidative stress. This imbalance contributes to the development and progression of diabetic complications. Similarly, renal and liver diseases are characterised by oxidative stress, where an excess of oxidants overwhelms the antioxidant defense mechanisms, causing tissue damage and dysfunction. Restoring the oxidant-antioxidant balance is essential for mitigating oxidative stress-related damage under these conditions. In this current study, the efficacy of stingless bee honey (SBH) and its phenolic-rich extract (PRE) in controlling the oxidant-antioxidant balance in high-fat diet- and streptozotocin/nicotinamide-induced diabetic rats was investigated. The administration of SBH and PRE improved systemic antioxidant defense and oxidative stress-related measures without compromising liver and renal functioning. Analyses of the liver, skeletal muscle and adipose tissues revealed differences in their capacities to scavenge free radicals and halt lipid peroxidation. Transcriptional alterations hypothesised tissue-specific control of KEAP1-NRF2 signalling by upregulation of Nrf2, Ho1 and Sod1 in a tissue-specific manner. In addition, hepatic translational studies demonstrated the stimulation of downstream antioxidant-related protein with upregulated expression of SOD-1 and HOD-1 protein. Overall, the results indicated that PRE and SBH can be exploited to restore the oxidant-antioxidant imbalance generated by diabetes via regulating the KEAP1-NRF2 signalling pathway.
  12. Christopher C, Kc B, Shrestha S, Blebil AQ, Alex D, Mohamed Ibrahim MI, et al.
    Aging Med (Milton), 2022 Jun;5(2):126-137.
    PMID: 35783113 DOI: 10.1002/agm2.12203
    Appropriate medication use is one of the most significant challenges among the older population. Although medication use problems are well documented at the secondary and tertiary health care level, the evidence at the primary care level of OECD region is limited. A narrative review of existing literature was conducted through a nonsystematic search for original articles through electronic search databases, Ovid Medline, Google Scholar from 2001 to 2021, and a combination of citation references. Medication use problems are prevalent in older adults at the primary care level. The main issues of medication use identified were as follows; nonadherence, adverse drug events, accessibility, polypharmacy, inappropriate medications, belief about medications, lack of knowledge and awareness, and lack of deprescribing. In addition, the current review has identified the possibilities of the problems: many medications, forgetfulness, lack of deprescribing, lack of communication, poor understanding, and limited awareness of inappropriate medications. This review found that various medication use problems subclusters were identified to impact the health care need among older adults. Therefore, effective interventions targeting these issues need to be developed to reduce medication use problems among older adults at a primary care level.
  13. Hasyima Ismail N, Amin Safwan A, Fairuz Fozi N, Megat FH, Muhd Farouk H, Kamaruddin SA, et al.
    Pak J Biol Sci, 2017;20(3):140-146.
    PMID: 29023005 DOI: 10.3923/pjbs.2017.140.146
    BACKGROUND: Orange mud crab Scylla olivacea is one of the most important fisheries resources. A new development in ageing technique of crustaceans has been introduced. The detection of growth band deposited in hard structure of gastric mill in the cardiac stomach are found retained after moulting process can be used as age indicator and growth estimation.

    OBJECTIVE: This study was carried out to determine the comparison between carapace width and growth band count of S. olivacea in Malaysia.

    MATERIALS AND METHODS: Samples were collected from Setiu Wetlands, Terengganu, Malaysia from February until August, 2016. Samples were categorized based on their morphological measurements. The mesocardiac and zygocardiac ossicles in the gastric mill of S. olivacea was dissected out and preserved in solutions and underwent a cross sectioning process. A total of 76 of wild S. olivacea ranging from 6.56 to 12.84 cm in carapace width were analysed. The growth band counts were examined for each individual and ranging from 1 to 3 band counts.

    RESULTS: A positive linear relation was observed between CW and GBC with r2 = 0.5178, p<0.01. Overall, there was a strong, positive correlation between CW and GBC. Increase in CW were correlated with increases in GBC respectively for this species.

    CONCLUSION: Therefore, the carapace width, growth band counts and body weight can be used to improve data on growth, recruitment, maturation and mortality. Thus, this study would able to improve new ageing technique and contribute greatly to improve the conservation and management of S. olivacea in Setiu Wetlands, Terengganu, Malaysia.

  14. Ahmad J, Marsidi N, Sheikh Abdullah SR, Hasan HA, Othman AR, Ismail N', et al.
    Chemosphere, 2024 Feb;349:140881.
    PMID: 38048826 DOI: 10.1016/j.chemosphere.2023.140881
    Treatment of petroleum-contaminated soil to a less toxic medium via physical and chemical treatment is too costly and requires posttreatment. This review focuses on the employment of phytoremediation and mycoremediation technologies in cleaning hydrocarbon-contaminated soil which is currently rare. It is considered environmentally beneficial and possibly cost-effective as it implements the synergistic interaction between plants and biosurfactant producing mycorrhiza to degrade hydrocarbon contaminants. This review also covers possible sources of hydrocarbon pollution in water and soil, toxicity effects, and current technologies for hydrocarbon removal and degradation. In addition to these problems, this review also discusses the challenges and opportunities of transforming the resultant treated sludge and treating plants into potential by-products for a higher quality of life for future generations.
  15. Suhairi MH, Mohamad M, Isa MR, Mohd Yusoff MAS, Ismail N
    BMJ Open, 2024 Feb 26;14(2):e080144.
    PMID: 38413152 DOI: 10.1136/bmjopen-2023-080144
    OBJECTIVES: Due to the paucity of literature on risk factors for tuberculosis (TB)-related death, we determine the sociodemographic and clinical risk factors associated with TB-related deaths among adult pulmonary TB (PTB) patients on treatment in Selangor, Malaysia.

    DESIGN: Retrospective cohort study.

    SETTING: Routinely collected primary care data from all government TB clinics in Selangor.

    PARTICIPANTS: Data of 24 570 eligible adult PTB patients from 2013 to 2019 were obtained from Selangor's State Health Department surveillance records. We included PTB patients aged at least 15 years old at the time of diagnosis with complete documentation of the dates of diagnosis, treatment initiation, end of treatment/follow-up and treatment outcomes. We excluded patients whose diagnoses were changed to non-TB, post-mortem TB diagnosis and multidrug-resistant TB (MDR-TB) patients.

    PRIMARY AND SECONDARY OUTCOME MEASURES: TB-related death, determined from the recorded physicians' consensus during the TB mortality meeting.

    RESULTS: TB-related death was significantly associated with far (adjusted HR (aHR) 9.98, 95% CI 4.28 to 23.28) and moderately advanced (aHR 3.23, 95% CI 1.43 to 7.31) radiological findings at diagnosis; concurrent TB meningitis (aHR 7.67, 95% CI 4.53 to 12.98) and miliary TB (aHR 6.32, 95% CI 4.10 to 9.74) involvement; HIV positive at diagnosis (aHR 2.81, 95% CI 2.21 to 3.57); Hulu Selangor (aHR 1.95, 95% CI 1.29 to 2.93), Klang (aHR 1.53, 95% CI 1.18 to 1.98) and Hulu Langat (aHR 1.31, 95% CI 1.03 to 1.68) residing districts; no formal education (aHR 1.70, 95% CI 1.23 to 2.35); unemployment (aHR 1.54, 95% CI 1.29 to 1.84), positive sputum smear acid-fast bacilli (AFB) at diagnosis (aHR 1.51, 95% CI 1.22 to 1.85); rural residency (aHR 1.39, 95% CI 1.13 to 1.72) and advancing age (aHR 1.03, 95% CI 1.02 to 1.03).

    CONCLUSIONS: Far and moderately advanced radiological findings, concurrent TB meningitis and miliary TB involvement, HIV positive, Hulu Selangor, Klang and Hulu Langat residing districts, no formal education, unemployment, positive sputum smear AFB, rural residency and advancing age are risk factors of TB-related death. Our findings should assist in identifying high-risk patients requiring interventions against TB-related death.

  16. Wan Puteh SE, Mohd Ismail N, Md Isa Z, Ban AY
    PMID: 36901455 DOI: 10.3390/ijerph20054443
    Tobacco and nicotine derivatives uses are multiple in nature. These include conventional cigarettes (CCs), heated tobacco products (HTPs), and electronic cigarettes (ECs). This study aims to determine the practices, nicotine dependency profile, association with exhaled carbon monoxide (eCO) level, and pulmonary function (PF) among adult product users and non-smokers. This cross-sectional study involved smokers, nicotine users, and non-smokers from two public health facilities in Kuala Lumpur from December 2021 to April 2022. Data on socio-demography, smoking profile, nicotine dependency level, anthropometry, eCO monitor, and spirometer measurements were recorded. Out of 657 respondents, 52.1% were non-smokers, 48.3% were CC only smokers, poly-users (PUs) (27.3%), EC-only users (20.9%), and HTP-only users (3.5%). EC use was prevalent among the younger aged, tertiary educated, and females; HTP use was prevalent among those of an older age and CC users was common among lower educated males. The highest median eCO (in ppm) seen were as follows: in CC users only (13.00), PUs (7.00), EC users (2.00), HTP users (2.00), and the least was observed among non-smokers (1.00), which is significantly different across the groups (p <0.001). Comparison of practice between the different product users showed significant differences in age of product initiation (p <0.001, youngest in CC users in PUs), duration of product use (p <0.001, longest in exclusive CC users), cost per month (p <0.001, highest in exclusive HTP users) and attempt to quit product (p <0.001, CC use in PUs had the highest attempt to quit), while there is no significant difference in Fagerström score across the groups. Among EC users, 68.2% successfully switched from smoking CCs to ECs. The findings suggest that EC and HTP users are exhaling less CO. The use of these products in a targeted approach may manage nicotine addiction. Switching practice was higher among current EC users (from using CCs), hence emphasizing the need of switching encouragement and total nicotine abstinence later on. Lower eCO levels in the PU group, (as compared to CC-only users) and high quit attempt rate among in CC use in PUs may indicate attempt of PUs in reducing CC use through alternative modalities such as ECs and HTPs.
  17. Rani MR, Azemi AK, Bakar K, Abu-Bakar L, Muhammad TST, Ismail N
    Nat Prod Res, 2024 Mar 14.
    PMID: 38486409 DOI: 10.1080/14786419.2024.2327851
    This present study aimed to investigate the effects of Gracilaria changii (Red seaweed) extract and its fraction on scavenger receptor class B type I (SR-BI) gene expressions. In vitro studies of the activity of G. changii extract and its fraction against the therapeutic target for hypocholesterolemia were conducted using high-density lipoprotein (HDL) receptor SR-BI via luciferase assay in HepG2 cells. In the current study, methanol crude extract (MCE) and Fraction-2 of G. changii showed the highest expression levels of the SR-BI gene via luciferase assay and increased SR-BI mRNA expression compared to the negative control. Metabolite profiling of the MCE of G. changii by GC-MS revealed nine major compounds, comprising various fatty acids, particularly hexadecenoic acid. Therefore, the MCE and Fraction-2 of G. changii have the potential to be explored in the treatment of hypercholesterolaemia to prevent or reduce the severity of atherosclerosis development.
  18. Azmi NH, Ismail M, Ismail N, Imam MU, Alitheen NB, Abdullah MA
    PMID: 26858770 DOI: 10.1155/2015/153684
    The pathogenesis of Alzheimer's disease involves complex etiological factors, of which the deposition of beta-amyloid (Aβ) protein and oxidative stress have been strongly implicated. We explored the effects of H2O2, which is a precursor for highly reactive hydroxyl radicals, on neurotoxicity and genes related to AD on neuronal cells. Candidate bioactive compounds responsible for the effects were quantified using HPLC-DAD. Additionally, the effects of germinated brown rice (GBR) on the morphology of Aβ(1-42) were assessed by Transmission Electron Microscopy and its regulatory effects on gene expressions were explored. The results showed that GBR extract had several phenolic compounds and γ-oryzanol and altered the structure of Aβ(1-42) suggesting an antiamyloidogenic effect. GBR was also able to attenuate the oxidative effects of H2O2 as implied by reduced LDH release and intracellular ROS generation. Furthermore, gene expression analyses showed that the neuroprotective effects of GBR were partly mediated through transcriptional regulation of multiple genes including Presenilins, APP, BACE1, BACE2, ADAM10, Neprilysin, and LRP1. Our findings showed that GBR exhibited neuroprotective properties via transcriptional regulation of APP metabolism with potential impact on Aβ aggregation. These findings can have important implications for the management of neurodegenerative diseases like AD and are worth exploring further.
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