Browse publications by year: 2023

  1. Azlisham NAF, Johari Y, Mohamad D, Yhaya MF, Mahmood Z
    Proc Inst Mech Eng H, 2023 Dec;237(12):1339-1347.
    PMID: 38014749 DOI: 10.1177/09544119231208222
    This study evaluated the use of urethane dimethacrylate (UDMA) as a base monomer to prepare the newly developed flowable composite (FC) using nanohybrid silica derived from rice husk in comparison to bisphenol A-glycidyl methacrylate (Bis-GMA) on the degree of conversion and physicomechanical properties. The different loadings of base monomer to diluent monomer were used at the ratio of 40:60, 50:50, and 60:40. The bonding analysis confirmed the presence of nanohybrid silica in the newly developed FC. Independent t-test revealed a statistically significant increase in the degree of conversion, depth of cure and Vickers hardness of the UDMA-based FC, while surface roughness showed comparable results between the two base monomers. In conclusion, UDMA-based FC demonstrated superior performance with 60%-65% conversions, a significantly higher depth of cure exceeding 1 mm which complies with the Internal Standard of Organization 4049 (ISO 4049), and a substantial increase in Vickers hardness numbers compared to Bis-GMA-based FC, making UDMA a suitable alternative to Bis-GMA as a base monomer in the formulation of this newly developed FC derived from rice husk.
    MeSH terms: Composite Resins; Materials Testing; Polyethylene Glycols; Polymethacrylic Acids; Polyurethanes; Oryza*; Silicon Dioxide; Bisphenol A-Glycidyl Methacrylate
  2. Khan EEA, Hairon SM, Hashim N, Kasri MRM, Hamid NAA
    J Health Care Poor Underserved, 2023;34(3):972-988.
    PMID: 38015132
    This study aimed to measure the proportion of adverse birth outcomes among all births and maternal factors associated with low birth weight among Indigenous (Orang Asli) infants in Kelantan, Malaysia. Proportionate stratified random sampling was done to select 327 samples from five antenatal centres involved with Orang Asli in Kelantan. Multiple logistic regression analysis was used to determine maternal factors associated with low birth weight among Orang Asli infants. The proportion of low birth weight was measured at 16.2% (substantially exceeding the national rate), preterm birth at 7.3%, stillbirth at 0.6%, early neonatal death at 0.6%, and macrosomia at 0.9%,. Maternal factors associated with low birth weight infants include primiparity (AdjOR: 2.88; 95% CI: 1.44,5.78), anaemia in pregnancy (AdjOR: 2.33; 95%CI: 1.18,4.61) and hypertension (AdjOR: 4.21; 95%CI: 1.23,14.44). In conclusion, far-reaching antenatal services and nutrition policy are essential to reduce the proportions of low birth weight among Orang Asli.
    MeSH terms: Ethnic Groups; Family; Female; Humans; Infant; Infant, Newborn; Malaysia/epidemiology; Pregnancy; Perinatal Death*
  3. Ahmed U, Ong SK, Tan KO, Khan KM, Khan NA, Siddiqui R, et al.
    Int Microbiol, 2023 Nov 28.
    PMID: 38015290 DOI: 10.1007/s10123-023-00450-1
    Acanthamoeba are free living amoebae that are the causative agent of keratitis and granulomatous amoebic encephalitis. Alpha-Mangostin (AMS) is a significant xanthone; that demonstrates a wide range of biological activities. Here, the anti-amoebic activity of α-Mangostin and its silver nano conjugates (AMS-AgNPs) were evaluated against pathogenic A. castellanii trophozoites and cysts in vitro. Amoebicidal assays showed that both AMS and AMS-AgNPs inhibited the viability of A. castellanii dose-dependently, with an IC50 of 88.5 ± 2.04 and 20.2 ± 2.17 μM, respectively. Both formulations inhibited A. castellanii-mediated human keratinocyte cell cytopathogenicity. Functional assays showed that both samples caused apoptosis through the mitochondrial pathway and reduced mitochondrial membrane potential and ATP production, while increasing reactive oxygen species (ROS) and nicotinamide adenine dinucleotide phosphate (NADPH) cytochrome-c reductase in the cytosol. Whole transcriptome sequencing of A. castellanii showed the expression of 826 genes, with 447 genes being up-regulated and 379 genes being down-regulated post treatment. The Kyoto Encyclopedia of Genes and Genomes analysis showed that the majority of genes were linked to apoptosis, autophagy, RAP1, AGE-RAGE and oxytocin signalling pathways. Seven genes (PTEN, H3, ARIH1, SDR16C5, PFN, glnA GLUL, and SRX1) were identified as the most significant (Log2 (FC) value 4) for molecular mode of action in vitro. Future in vivo studies with AMS and nanoconjugates are needed to realize the clinical potential of this work.
  4. Low SC, Vo DN, Hameed BH, Abd Rahman SB
    Environ Sci Pollut Res Int, 2023 Dec;30(60):124425-124426.
    PMID: 38015403 DOI: 10.1007/s11356-023-31128-w
    MeSH terms: Promoter Regions, Genetic; Technology*
  5. Hossain AS, Alrudayni HA, Haouala F, Aleissa MS, Kahrizi D, Ahmed AS
    Cell Mol Biol (Noisy-le-grand), 2023 Nov 15;69(11):45-50.
    PMID: 38015542 DOI: 10.14715/cmb/2023.69.11.8
    The study was conducted to evaluate the root, shoot and leaf callus cell regeneration and its biochemical properties like antioxidant, carbohydrate, pigment and mineral content from broccoli root, shoot and leaf cutting in vitro. An in vitro factorial experiment was carried out based on a Completely Randomized Design (CRD) with 5 replicates in tissue culture applying different IBA (0.25, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0 and 3.5 mg/l) and BAP (1 mg/l) concentrations using broccoli root tip and leaf cutting. The results showed that a higher callus weight was found in the cultured leaf cutting than in root tip cutting in the concentration of 1.0, 1.5 & 2.0 mg/l IBA + 1.0 mg/l BAP combination. The highest callus weight was found in the cultured leaf cutting than root tips cutting at the concentration of 1.5mg/l IBA+1.0 mg/l BAP. Furthermore, the highest inverted sugar and glucose, chlorophyll and nutrient content (K+, NO3- & Ca++), total phenol, flavonoid and total antioxidant were found in the concentration of 1.5mg/l IBA+1.0 mg/l BAP combination in both broccoli leaf and root cutting. The results seemed that it was best to use the combination of the IBA and BAP in the concentration of 1.0-2.0 mg/l and 1mg/l to regenerate root, leaf and callus cell proliferation of broccoli from the root tip and leaf cutting.
    MeSH terms: Antioxidants; Brassica*; Flavonoids; Glucose; Minerals; Meristem
  6. Jamaluddin A, Mohd Abd Rahman SM, Abd Manan M, Abd Razak DL, Abd Rashid NY, Abd Ghani A, et al.
    Cell Mol Biol (Noisy-le-grand), 2023 Nov 15;69(11):9-16.
    PMID: 38015547 DOI: 10.14715/cmb/2023.69.11.2
    In this study, UVA- and UVB-irradiated human fibroblasts were used to investigate the anti-photoaging efficacy of two aqueous extracts from Aspergillus oryzae-fermented broken rice (FBR) and brewers' rice (FBrR). As UVA and UVB can damage the dermal and epidermal layers, respectively, two UV radiation approaches were utilised: i) direct UVA irradiation on fibroblasts, and ii) UVB-irradiated keratinocytes indirectly co-cultured with fibroblasts to observe their epithelial-mesenchymal interaction during UVB-induced photoaging. The anti-photoaging properties were tested utilising biochemical tests and quantitative polymerase chain reaction (qPCR). The treatment of UV-irradiated human fibroblasts with FBR and FBrR dramatically downregulates MMP-1 and SFE gene expression. Nonetheless, MMP-1 secretion was inhibited by FBR and FBrR, with more substantial decreases in UVB-treated co-cultures, ranging from 0.76- to 1.89-fold relative to the untreated control. In UVA-treated fibroblasts, however, the elastase-inhibiting activity of FBR and FBrR is up to 1.63-fold and 2.13-fold more potent, respectively. In addition, post-UV irradiation treatment with FBR and FBrR was able to repair and enhance collagen formation in UVA-irradiated fibroblasts. Both FBR and FBrR were able to upregulate elastin gene expression in fibroblasts under both culture conditions, especially at 50 µg/mL. The pro-inflammatory cytokines TNF-, IL-1ß, and IL-6 were likewise lowered by FBR and FBrR, which may have contributed to the anti-photoaging effect of the UVB-treated co-culture. These results reveal that FBR and FBrR inhibit photoaging in human fibroblasts under both UV induction conditions. In conclusion, FBR and FBrR may be attractive bio-ingredients for usage in the cosmetic sector as cosmeceuticals.
    MeSH terms: Humans; Pancreatic Elastase; Oryza*; Gene Expression; Matrix Metalloproteinase 1
  7. Agarwal R, Iezhitsa I
    Mol Aspects Med, 2023 Dec;94:101228.
    PMID: 38016252 DOI: 10.1016/j.mam.2023.101228
    Genetic rodent models are widely used in glaucoma related research. With vast amount of information revealed by human studies about genetic correlations with glaucoma, use of these models is relevant and required. In this review, we discuss the glaucoma endophenotypes and importance of their representation in an experimental animal model. Mice and rats are the most popular animal species used as genetic models due to ease of genetic manipulations in these animal species as well as the availability of their genomic information. With technological advances, induction of glaucoma related genetic mutations commonly observed in human is possible to achieve in rodents in a desirable manner. This approach helps to study the pathobiology of the disease process with the background of genetic abnormalities, reveals potential therapeutic targets and gives an opportunity to test newer therapeutic options. Various genetic manipulation leading to appearance of human relevant endophenotypes in rodents indicate their relevance in glaucoma pathology and the utility of these rodent models for exploring various aspects of the disease related to targeted mutation. The molecular pathways involved in the pathophysiology of glaucoma leading to elevated intraocular pressure and the disease hallmark, apoptosis of retinal ganglion cells and optic nerve degeneration, have been extensively explored in genetic rodent models. In this review, we discuss the consequences of various genetic manipulations based on the primary site of pathology in the anterior or the posterior segment. We discuss how these genetic manipulations produce features in rodents that can be considered a close representation of disease phenotype in human. We also highlight several molecular mechanisms revealed by using genetic rodent models of glaucoma including those involved in increased aqueous outflow resistance, loss of retinal ganglion cells and optic neuropathy. Lastly, we discuss the limitations of the use of genetic rodent models in glaucoma related research.
    MeSH terms: Animals; Disease Models, Animal; Humans; Intraocular Pressure; Phenotype; Mice; Rats
  8. Isa RM, Chong MC, Lee WL, Iqbal T, Mansor M, Zainudin AA, et al.
    Saudi Med J, 2023 Dec;44(12):1290-1294.
    PMID: 38016754 DOI: 10.15537/smj.2023.44.12.202320029
    OBJECTIVES: To describe the development of a webpage based on the Intervention Mapping (IM) protocol and usability testing of the Diabetic Retinopathy Health Education Profram (DRHEP).

    METHODS: The mixed methods pilot feasibility study was carried out between April and September 2021, involving 16 patients with type 2 diabetes mellitus and 5 experts. The usability score was rated according to the System Usability Scale (SUS).

    RESULTS: The average SUS score by the experts was 88. The patients gave a higher score of 85 for SUS, with 58 as the lowest. The average SUS score was 72. The findings indicate that the webpage is acceptable, good, and highly usable for users.

    CONCLUSION: The outcomes of this study signify the relationship between effective health applications and how their design might hamper their effectiveness in changing patients' behavior.

    MeSH terms: Diabetic Retinopathy*; Health Education; Health Promotion; Humans; Internet
  9. Kumar SS, Hartner AM, Chandran A, Gaythorpe KAM, Li X
    BMC Public Health, 2023 Nov 28;23(1):2351.
    PMID: 38017415 DOI: 10.1186/s12889-023-17082-9
    BACKGROUND: Malaysia introduced the two dose measles-mumps-rubella (MMR) vaccine in 2004 as part of its measles elimination strategy. However, despite high historical coverage of MCV1 and MCV2, Malaysia continues to report high measles incidence. This study suggests a novel indicator for investigating population immunity against measles in the Malaysian population.

    METHODS: We define effective vaccine coverage (EVC) of measles as the proportion of a population vaccinated with measles-containing vaccine (MCV) and effectively protected against measles infection. A quantitative evaluation of EVC throughout the life course of Malaysian birth cohorts was conducted accounting for both vaccine efficacy (VE) and between-dose correlation (BdC). Measles vaccination coverage was sourced from WHO-UNICEF estimates of Malaysia's routine immunisation coverage and supplementary immunisation activities (SIAs). United Nations World population estimates and projections (UNWPP) provided birth cohort sizes stratified by age and year. A step wise joint Bernoulli distribution was used to proportionate the Malaysian population born between 1982, the first year of Malaysia's measles vaccination programme, and 2021, into individuals who received zero dose, one dose and multiple doses of MCV. VE estimates by age and doses received are then adopted to derive EVC. A sensitivity analysis was conducted using 1000 random combinations of BdC and VE parameters.

    RESULTS: This study suggests that no birth cohort in the Malaysian population has achieved > 95% population immunity (EVC) conferred through measles vaccination since the measles immunisation programme began in Malaysia.

    CONCLUSION: The persistence of measles in Malaysia is due to pockets of insufficient vaccination coverage against measles in the population. Monitoring BdC through immunisation surveillance systems may allow for the identification of susceptible subpopulations (primarily zero-dose MCV individuals) and increase the coverage of individuals who are vaccinated with multiple doses of MCV. This study provides a tool for assessment of national-level population immunity of measles conferred through vaccination and does not consider subnational heterogeneity or vaccine waning. This tool can be readily applied to other regions and vaccine-preventable diseases.

    MeSH terms: Humans; Immunization Schedule; Measles virus; Vaccination; Immunization Programs; Measles-Mumps-Rubella Vaccine
  10. Nur AM, Aljunid SM, Almari M
    BMC Health Serv Res, 2023 Nov 28;23(1):1314.
    PMID: 38017444 DOI: 10.1186/s12913-023-10287-z
    BACKGROUND: Among the GCC countries affected by COVID-19 infections, Kuwait has been significantly impacted, with 658,520 cases and 2,563 deaths reported by the WHO on September 30, 2022. However, the impact of the COVID-19 epidemic on Kuwait's economy, especially in the healthcare sector, remains unknown.

    OBJECTIVE: This study aims to determine the total cost of managing COVID-19 in-patients in Kuwait.

    METHOD: A cross-sectional design was employed for this study. A total of 485 COVID-19 patients admitted to a general hospital responsible for COVID-19 cases management were randomly selected for this study from May 1st to September 31st, 2021. Data on sociodemographic information, length of stay (LOS), discharge status, and comorbidities were obtained from the patients' medical records. The data on costs in this study cover administration, utility, pharmacy, radiology, laboratory, nursing, and ICU costs. The unit cost per admission was calculated using a step-down costing method with three levels of cost centers. The unit cost was then multiplied by the individual patient's length of stay to determine the cost of care per patient per admission.

    FINDINGS: The mean cost of COVID-19 in-patient care per admission was KD 2,216 (SD = 2,018), which is equivalent to USD 7,344 (SD = 6,688), with an average length of stay of 9.4 (SD = 8.5) days per admission. The total treatment costs for COVID-19 in-patients (n = 485) were estimated to be KD 1,074,644 (USD 3,561,585), with physician and nursing care costs constituting the largest share at 42.1%, amounting to KD 452,154 (USD 1,498,529). The second and third-largest costs were intensive care (20.6%) at KD 221,439 (USD 733,893) and laboratory costs (10.2%) at KD 109,264 (USD 362,123). The average cost for severe COVID-19 patients was KD 4,626 (USD 15,332), which is almost three times higher than non-severe patients of KD 1,544 (USD 5,117).

    CONCLUSION: Managing COVID-19 cases comes with substantial costs. This cost information can assist hospital managers and policymakers in designing more efficient interventions, especially for managing high-risk groups.

    MeSH terms: Cross-Sectional Studies; Hospitals, General; Humans; Kuwait/epidemiology; Hospital Costs*
  11. Sathasivam HP, Davan SP, Chua SM, Rohaizat RF, Japar R, Zakaria Z, et al.
    Infect Agent Cancer, 2023 Nov 28;18(1):74.
    PMID: 38017493 DOI: 10.1186/s13027-023-00557-0
    BACKGROUND: In addition to the conventional aetiologic agents of oropharyngeal squamous cell carcinoma (OPSCC) such as tobacco usage, alcohol consumption and betel quid usage, it has been established that a proportion of OPSCC are driven by persistent oncogenic human papillomavirus (HPV) infections. Currently, there is a lack of data on the burden of HPV- associated OPSCC in Asian countries including Malaysia.

    METHODS: A cross-sectional multicentre study with tissue analysis of Malaysian patients diagnosed with primary OPSCC within a five-year period, from 2015 to 2019 between 01/01/2015 to 31/12/2019 was undertaken. Determination of HPV status was carried out using p16INK4a immunohistochemistry on tissue microarrays constructed from archived formalin-fixed paraffin-embedded tissue.

    RESULTS: From the cases identified, 184 cases had sufficient tissue material for analysis. Overall, median age at diagnosis was 63.0 years (IQR = 15) and 76.1% of patients were males. In our cohort, 35.3% of patients were Indian, 34.2% were Chinese, 21.2% were Malay and 9.2% were from other ethnicities. The estimated prevalence of HPV-associated OPSCC in our cohort was 31.0% (CI 24.4-38.2%). The median age for the HPV-associated OPSCC sub-group of patients was not significantly lower than the median age of patients with HPV-independent OPSCC. More than half of HPV-associated OPSCC was seen in patients of Chinese ethnicity (54.4%). Patients with HPV-associated OPSCC had a much better overall survival than patients with HPV-independent OPSCC (Log rank test; p 

  12. Sahril N, Adnan MAA, Khalil MKN, Chan YM, Yoga Ratnam KK, Lai WK, et al.
    J Health Popul Nutr, 2023 Nov 28;42(1):133.
    PMID: 38017532 DOI: 10.1186/s41043-023-00480-5
    BACKGROUND: Depression is on the rise and has become a significant concern for public health. Limited research has explored the connection between dietary patterns and depression. This investigation aimed to examine how dietary behaviours relate to depression among adolescents attending school in Malaysia.

    METHODS: The study utilized data from the National School-Based Health Survey 2022, a nationwide survey involving school-going adolescents aged 13-17, with a total of 33,523 participants from 239 schools. To assess depression, the study employed the Patient Health Questionnaire (PHQ-9), considering a score of 10 or higher as indicative of depression. Dietary behaviours were assessed using a validated self-administered questionnaire adapted from the World Health Organization's Global School-based Student Health Survey. Descriptive analysis and complex sample logistic regression were carried out using SPSS version 26.0.

    RESULTS: The study revealed a 26.9% overall prevalence of depression, with higher risks among female adolescents (AOR 2.71, 95% CI 2.51, 2.92) and those in higher grades. Malays (AOR 1.71, 95% CI 1.41, 2.07), Other Bumiputeras (AOR 1.69, 95% CI 1.32, 2.17), and Others (AOR 1.63, 95% CI 1.16, 2.30) had elevated odds of depression compared to Indians. Healthy dietary habits, like consuming less than two servings of fruits daily, correlated with depression (AOR 1.44 95% CI 1.35, 1.54). Additionally, unhealthy dietary behaviours such as fast food consumption (AOR 1.73 [95% CI 1.55, 1.93]) and carbonated soft drink intake (AOR 1.59 [95% CI 1.48, 1.70]) were positively associated with depression.

    CONCLUSIONS: One out of every four Malaysian adolescents was identified to experience depression. Depression was linked to several factors, such as being female, belonging to higher grade levels, identifying as Malays, Other Bumiputeras, or belonging to other ethnicities, and participating in the consumption of fast food, carbonated soft drinks, and fruits. To address these observations, it is crucial to formulate effective public health programmes that prioritize adolescent mental health and encourage the adoption of healthy eating habits.

    MeSH terms: Adolescent; Cross-Sectional Studies; Female; Humans; Malaysia/epidemiology; Male; Surveys and Questionnaires
  13. Ababneh BF, Ong SC, Alsaloumi L, Aljamal HZ, Hussain R
    J Pharm Policy Pract, 2023 Nov 28;16(1):159.
    PMID: 38017584 DOI: 10.1186/s40545-023-00666-6
    INTRODUCTION: Understanding general public's experiences of using drive-thru pharmacies during COVID-19 in different countries is imperative for establishing these services by standardizing global guidelines for drive-thru pharmacies. The objectives of this study were to validate a Malay version of the drive-thru community pharmacy service questionnaire for use among Malaysians and to obtain a better understanding of the public's awareness, attitudes, and perceptions of drive-thru community pharmacy service during COVID-19.

    METHODS: This study was a cross-sectional study, conducted online using a Google form survey using a convenient sampling method among the Malaysian public. The English version of the drive-thru community pharmacy service questionnaire was translated into the Malay language according to international guidelines. The content and face validity of the questionnaire were examined by experts. Then, the questionnaire was pilot tested on 15 native speakers. Reliability was assessed using Cronbach's alpha coefficients. The test-retest reliability was measured with Cohen's κ coefficient.

    RESULTS: A total of 519 participants completed the questionnaire. Face and content validity were satisfactory, as noticed by both the experts and pilot study participants. For test-retest reliability (32 participants), most perception statements had very good coefficient agreement values. Cronbach's alpha of the perception part was 0.833, indicating strong internal consistency. The median age of study participants was 50.0 (IQR = 31.0) and about half of them were females (50.3%, n = 261). Despite 20.4% (n = 106) of the participants reported that the drive-thru community pharmacy service was available in their cities, only 10.4% (n = 54) reported using it. Most participants were in favor of introducing drive-thru services in community pharmacies throughout the country. Drive-thru community pharmacies, according to more than half of the participants (n = 394), would be beneficial to the public. Participants acknowledged that community pharmacies with drive-thru services were useful during the COVID-19 and quarantine periods due to the enhanced social distance 43.5% (n = 226), reduced the spread of the COVID-19 virus 47.0% (n = 244), and relieved pressure on other healthcare settings 38.2% (n = 198).

    CONCLUSIONS: The translated questionnaire was valid and reliable in assessing the perceptions toward drive-thru community pharmacy service during COVID-19 in Malaysia. The participants expressed good awareness and favorable attitudes and perceptions toward drive-thru community pharmacy service during COVID-19. Furthermore, they perceived those services helped to increase social isolation and stop the COVID-19 virus from spreading.

  14. Tannoubi A, Quansah F, Magouri I, Chalghaf N, Bonsaksen T, Srem-Sai M, et al.
    BMC Psychol, 2023 Nov 28;11(1):418.
    PMID: 38017589 DOI: 10.1186/s40359-023-01454-2
    OBJECTIVE: The present study examined the impact of academic engagement, study processes, and grit on the academic achievement of physical education and sport university students.

    METHODS: An internet-based survey recruited 459 university students aged 19-25 years (M = 21 ± 1.3) in physical education and sports (PES) to fill out questionnaires on Physical Education-Study Process Questionnaire (PE-SPQ), Physical Education-Grit (PE-Grit), academic engagement (A-USEI), and Grade Point Average (GPA). A path analysis was carried out to understand variable relationships.

    RESULTS: Data from each variable exhibited symmetrical and normal distribution, as indicated by the skewness and kurtosis values. The model's fit indices showed sufficient Comparative Fit Index (CFI = 0.92), Tucker-Lewis Index (TLI = 0.90), Goodness of Fit Index (GFI = 0.99) and Normed Fit Index (NFI = 0.90) and showed acceptable levels. The results indicated a statistically significant positive impact of engagement (β = 0.299, p 

    MeSH terms: Achievement; Humans; Physical Education and Training; Students; Universities
  15. Agus Nurjana M, Srikandi Y, Wijatmiko TJ, Hidayah N, Isnawati R, Octaviani O, et al.
    J Water Health, 2023 Nov;21(11):1741-1746.
    PMID: 38017604 DOI: 10.2166/wh.2023.270
    One of the factors that influence the development of mosquitoes is the water container. This study was performed to determine the relationship between the characteristics of water containers and the preferable conditions for laying eggs by Aedes sp. A single larva method was conducted during March 2019 in 300 houses in two villages (Turikale and Adatongeng) at Maros Regency, Indonesia. In total, 1,269 water containers were considered, and among them buckets were found to be the most common container. Logistic regression analysis showed that the type, container location, and weekly drainage were related to the presence of larvae/pupae in the Maros Regency (p-value < 0.05). Non-water containers, which are kept indoors and are not drained at least once a week, have a greater chance of breeding Aedes sp. More attention is given to non-water containers that are located inside the house. Prevention activities, especially draining water containers properly at least once a week ensures that they do not become breeding sites for Aedes sp. mosquitoes and helps to prevent the transmission of dengue viral fever.
    MeSH terms: Aedes*; Animals; Indonesia; Larva; Pupa; Water
  16. Wei Y, Wang D, Li G, Yu H, Dong X, Jiang H
    Water Sci Technol, 2023 Nov;88(10):2566-2580.
    PMID: 38017678 DOI: 10.2166/wst.2023.365
    In recent years, chemical water treatment equipment has gained significant attention due to its environmental-friendly features, multifunctionality, and broad applicability. Recognizing the limitations of existing chemical treatment equipment, such as challenges in scale removal and the high water content in scale deposits, we propose a novel drum design for both anode and cathode, enabling simultaneous scale suction and dehydration. We constructed a small experimental platform to validate the equipment's performance based on our model. Notably, under the optimal operating parameters, the hardness removal rate for circulating water falls within the range of 19.6-24.46%. Moreover, the scale accumulation rate per unit area and unit time reaches 13.7 g h-1 m-2. Additionally, the energy consumption per unit weight of the scale remains impressively low at 0.16 kWh g-1. Furthermore, the chemical oxygen demand (COD) concentration decreased from an initial 106.0 mg L-1 to a mere 18.8 mg L-1, resulting in a remarkable total removal rate of 82.26%. In conclusion, our innovative electrochemical water treatment equipment demonstrates exceptional performance in scale removal, organic matter degradation, and water resource conservation, offering valuable insights for future research and development in chemical treatment equipment and electrochemical theory.
    MeSH terms: Electrodes; Oxidation-Reduction; Waste Disposal, Fluid/methods
  17. Okwaraji YB, Suárez-Idueta L, Ohuma EO, Bradley E, Yargawa J, Pingray V, et al.
    BJOG, 2023 Nov 29.
    PMID: 38018284 DOI: 10.1111/1471-0528.17653
    OBJECTIVE: To examine the contribution of preterm birth and size-for-gestational age in stillbirths using six 'newborn types'.

    DESIGN: Population-based multi-country analyses.

    SETTING: Births collected through routine data systems in 13 countries.

    SAMPLE: 125 419 255 total births from 22+0 to 44+6 weeks' gestation identified from 2000 to 2020.

    METHODS: We included 635 107 stillbirths from 22+0  weeks' gestation from 13 countries. We classified all births, including stillbirths, into six 'newborn types' based on gestational age information (preterm, PT, <37+0  weeks versus term, T, ≥37+0  weeks) and size-for-gestational age defined as small (SGA, <10th centile), appropriate (AGA, 10th-90th centiles) or large (LGA, >90th centile) for gestational age, according to the international newborn size for gestational age and sex INTERGROWTH-21st standards.

    MAIN OUTCOME MEASURES: Distribution of stillbirths, stillbirth rates and rate ratios according to six newborn types.

    RESULTS: 635 107 (0.5%) of the 125 419 255 total births resulted in stillbirth after 22+0  weeks. Most stillbirths (74.3%) were preterm. Around 21.2% were SGA types (PT + SGA [16.2%], PT + AGA [48.3%], T + SGA [5.0%]) and 14.1% were LGA types (PT + LGA [9.9%], T + LGA [4.2%]). The median rate ratio (RR) for stillbirth was highest in PT + SGA babies (RR 81.1, interquartile range [IQR], 68.8-118.8) followed by PT + AGA (RR 25.0, IQR, 20.0-34.3), PT + LGA (RR 25.9, IQR, 13.8-28.7) and T + SGA (RR 5.6, IQR, 5.1-6.0) compared with T + AGA. Stillbirth rate ratios were similar for T + LGA versus T + AGA (RR 0.7, IQR, 0.7-1.1). At the population level, 25% of stillbirths were attributable to small-for-gestational-age.

    CONCLUSIONS: In these high-quality data from high/middle income countries, almost three-quarters of stillbirths were born preterm and a fifth small-for-gestational age, with the highest stillbirth rates associated with the coexistence of preterm and SGA. Further analyses are needed to better understand patterns of gestation-specific risk in these populations, as well as patterns in lower-income contexts, especially those with higher rates of intrapartum stillbirth and SGA.

  18. Sumbowo JF, Ihsan FA, Fathurrahman F, Amalia N, Akbar FT, Yudistira HT, et al.
    Phys Chem Chem Phys, 2023 Dec 06;25(47):32637-32647.
    PMID: 38009535 DOI: 10.1039/d3cp03642a
    Pyrolyzed Fe-N-C-based catalysts, particularly FeN4, are reported to show enhanced catalytic activity for some chemical reactions, particularly for the oxygen reduction reaction (ORR). Here, we present a computational study to investigate another pyrolyzed Fe-N-C-based catalyst, i.e. Fe2N6, adsorbed on graphene with special emphasis on the edges of graphene nanoribbons (both zig-zag and armchair configurations) as a candidate for Fe dual-atom catalysts (Fe-DACs). Utilizing density functional theory calculations along with microkinetic simulations, we investigate the influence of graphitic edges on the stability and ORR activity of Fe-DAC active sites. Our findings indicate that the presence of graphitic edges, particularly the zig-zag configuration, significantly lowers the formation energy of Fe-DAC active sites, making them more likely to form at the edges. Furthermore, several Fe-DAC active sites at graphitic edges exhibit exceptional ORR performance, surpassing the commonly employed FeN4 active site in SAC systems and even exceeding the benchmark Pt(111) surface. Notably, the (Fe2N6)o@z1 active site demonstrates outstanding performance in both associative and dissociative mechanisms. These results highlight the role of graphitic nanopores in enhancing the catalytic behavior of Fe-DAC active sites, providing valuable insights for designing efficient non-precious metal catalysts for ORR applications.
  19. Simonova AY, Ilyashenko KK, Belova MV, Potskhveriya MM, Kareva MV, Asanova LR, et al.
    Adv Gerontol, 2023;36(4):532-538.
    PMID: 38010182
    The population of developed countries is aging. Along with an increase in the proportion of people over 60 years of age among the population, their number is also increasing among patients with acute poisoning of chemical etiology. Analysis of the structure of acute poisoning in elderly and senile people for the period 2020-2022. It has been established that the proportion of patients of gerontological age in the overall structure of acute poisonings averages 13,5%, of which the largest group is persons aged 60-74 years (60,2%), women - 64,5%, men - 35,5%. It was found that in 61.5% of cases the cause of poisoning was suicide, 38,5% of poisonings were random. In the structure of acute poisoning in geriatric patients, psychopharmacological drugs are in the lead - 34,1%, corrosive substances - 15,9%, drugs acting on the cardiovascular system - 12,7%. These same toxicants are the main etiological cause of death. Patients over 60 years of age have a high mortality rate from 13,2 to 22,3%. Acute chemical poisoning in patients over 60 years of age is an urgent medical problem at the present stage, due to a significant incidence and high mortality, and require detailed study in order to improve the effectiveness of their treatment.
    MeSH terms: Aged; Female; Geriatrics*; Humans; Male; Middle Aged; Suicide*; Incidence
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