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  1. Vinnie-Siow WY, Low VL, Chai HC, Lim YA, Tan TK
    PLoS One, 2025;20(7):e0326693.
    PMID: 40632758 DOI: 10.1371/journal.pone.0326693
    Mosquitoes serve as the primary vectors responsible for transmitting canine filariasis, yet understanding the molecular interactions between filarial parasites and their vectors is a significant challenge.. Therefore, employing a proteomic approach is crucial for elucidating the protein expressions profile in mosquitoes, allowing the tracking of biochemical changes during parasite development and survival within the mosquito. To infer the protein response of mosquitoes to filarial infections, Aedes togoi was inoculated with canine filarial parasites, Dirofilaria immitis and Brugia pahangi, and maintained for 14 days prior before dissection to collect their cuticular tissue proteins for Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS) analysis. Actin and prophenoloxidase, recognized as defence proteins, exhibited upregulation in groups inoculated with D. immitis and B. pahangi. Most proteins in glycolysis, gluconeogenesis, and the TCA cycle were upregulated in both groups, except for dihydrolipoyl dehydrogenase, vital for pyruvate decarboxylation, which was downregulated, while glucose-1-phosphate uridylyltransferase, essential for glycogen production, was expressed despite its absence in the control. Additionally, a pathway related to tyrosine metabolism, involving aspartate aminotransferase, AAEL010442-PA, 4-hydroxyphenylpyruvate dioxygenase, aspartate aminotransferase, and homogentisate 1,2-dioxygenase, was expressed. This study has addressed gaps in understanding the protein response of mosquitoes infected with filarial parasites, shedding light on host defence mechanisms and potential metabolic adaptations, thereby enhancing our comprehension of filariasis infection mechanisms.
  2. Shahbaz M, Palaniveloo K, Tan YS, Palasuberniam P, Ilyas N, Wiart C, et al.
    World J Microbiol Biotechnol, 2024 May 29;40(7):217.
    PMID: 38806748 DOI: 10.1007/s11274-024-04022-x
    Plant pathogens with their abundance are harmful and cause huge damage to different agricultural crops and economy of a country as well as lead towards the shortage of food for humans. For their management, the utilization of entomopathogenic fungi is an eco-friendly technique, sustainable to the environment, safe for humans and has promising effect over chemical-based pesticides. This process requires a biochemical mechanism, including the production of enzymes, toxins, and other metabolites that facilitate host infection and invasion. Essential enzymes such as chitinase, proteinase, and lipase play a direct role in breaking down the host cuticle, the primary barrier to EPF (Entomopathogenic Fungi) infection. Additionally, secondary metabolites such as destruxins in Metarhizium, beauvericin in Beauveria, hirsutellides in Hirsutella, isarolides in Isaria, cordyols in Cordyceps, and vertihemipterins in Verticillium, among others, act both directly and indirectly to disable the defense mechanisms of insect hosts, thereby accelerating the EPF infection process. The chemical composition of these secondary metabolites varies, ranging from simple non-peptide pigments such as oosporine to highly complex piperazine derivatives such as vertihemiptellides. The biocontrol efficacy of EPF is extensively studied, with numerous fungal strains commercially available on a large scale for managing arthropod pests. This review emphasizes the role of proteins and enzymes against crop pathogens, detailing their mode of action, and describing the metabolites from entomopathogenic fungi and their biological activities. In doing so, these findings contribute to establishing a symbiotic equilibrium between agricultural productivity and environmental conservation.
  3. Liow JW, Shamsudin AH, Ho SH, Liem A, Tan K
    J Homosex, 2024 Dec 03.
    PMID: 39626099 DOI: 10.1080/00918369.2024.2433055
    There are scant LGBT+ studies in Southeast Asia exploring mental health differences across multiple social identities. Using data from the Malaysian KAMI Survey (n = 718), we conducted bivariate regression analyses to investigate the association between sociodemographic backgrounds and the prevalence of depression, anxiety, non-suicidal self-injury, and suicidality. Results showed that younger participants, those questioning their sexual orientation (compared to gay or lesbian), cisgender women, trans men, and non-binary individuals (compared to cisgender men) reported significantly higher levels of mental ill-health. Our intercategorical analysis builds a foundation for future intersectional-based research in response to public health challenges for vulnerable LGBT+ groups.
  4. Prabakaran S, Saad HM, Tan CH, Syed Abdul Rahman SN, Sim KS
    Chem Biodivers, 2025 Jan;22(1):e202401086.
    PMID: 39289837 DOI: 10.1002/cbdv.202401086
    Kaempferia parviflora or commonly known as "Kunyit hitam" by locals, is an edible plant, native to tropical regions, has been extensively utilized for culinary and medicinal applications. The present study aimed to investigate the phytochemical composition and biological activities of the rhizomes of K. parviflora. The ethanol crude and fractionated extracts (hexane and chloroform) of the rhizomes were evaluated for their total phenolic content, total steroidal content, as well as antioxidant, anti-obesogenic, and anti-diabetic activities. The chloroform extract demonstrated the highest concentration of plant sterols (432±0.23 mg BSE/g extract) and a substantial amount of phenolic compounds (1.19×103±0.41 mg GAE/g extract). Gas chromatography-mass spectrometry (GC/MS) analysis revealed that the chloroform extract of the rhizomes is predominantly composed of bioactive flavonoids including tectochrysin (1), 5,7-dimethoxyflavone (2), 3,5,7-trimethoxyflavone (3), 3,4',5,7-tetramethoxyflavone (4), and 4',5,7-trimethoxyflavone (5). Furthermore, the chloroform extract exhibited the highest overall radical scavenging and α-glucosidase inhibitory activities, which can be attributed to the presence of compounds 1-5 in the extract. Collectively, these findings suggest that the chloroform extract of the rhizomes of K. parviflora is a potentially valuable source of bioactive compounds with antioxidant, anti-obesogenic, and anti-diabetic properties, with potential application in therapeutics and functional foods.
  5. Cheow PS, Tan TK, Song AA, Yusoff K, Chia SL
    Avian Pathol, 2025 Feb;54(1):149-157.
    PMID: 39318350 DOI: 10.1080/03079457.2024.2403412
    Development of nr-NDV.Reverse transfection was applied for the recovery of nr-NDV.Propagation of nr-NDV was done by sub-passaging transfected BSR T7/5 cells.Safety profile was done to prove that the nr-NDV is non-replicating.
  6. Ahmed S, Tan YH, Mubarak NM, Khalid M, Channa N, Karri RR, et al.
    Environ Res, 2025 Mar 01;268:120765.
    PMID: 39761786 DOI: 10.1016/j.envres.2025.120765
    Bismuth-based photocatalysts proved to have remarkable photoactivity for antibiotic degradation from water. However, the two significant challenges of bismuth-based photocatalysts are the fast charge recombination rate and higher energy band gap. This study successfully synthesised a novel I-Bi/Bi2WO6/MWCNTs (C-WBI) heterostructure composite photocatalysts with shorter energy band-gap and higher charge production capability through interfacial amidation linkage. The photochemical characterization of C-WBI confirms that the interfacial linkage between MWNCTs and I-Bi/Bi2WO6 (WBI) significantly boosted the charge production capacity and broadened visible-light harvesting (508 nm), resulting in improved photocatalytic activity. As anticipated, optimized 7%C-WBI shows remarkable adsorption and photocatalytic activity for TC removal compared to pristine WBI (2.27 times) under visible light. TC removal was enhanced to 96.75% from 71.58% (WBI) at mild operating conditions of pH 8, photocatalyst loading of 20 mg, and an initial TC concentration of 20 mg/l. Adsorption equilibrium was best fitted to Langmuir isotherm and pseudo-first-order kinetics with R2 of 0.998 and 0.997, respectively. In contrast, the photodegradation of TC is best described by pseudo-first-order kinetics with a correlation coefficient of 0.99 and a reaction rate of kobs of 0.0205 min-1. The effect of co-existing ions (Cl-, SO₄2⁻ and HCO₃⁻) reveals that the presence of Cl- notably inhibited the photocatalytic reaction rate, reducing it to 0.0161min⁻1. Quenching experiments identified •O₂⁻ and h⁺ radicals as key contributors to TC degradation, accounting for 63.02% and 60.8%, respectively. Furthermore, 7%C-WBI demonstrated outstanding reusability (82.05%) over 5 consecutive cycles with no obvious changes, thereby confirming the stability of the synthesised composite photocatalysts.
  7. Lau YS, Tan LK, Chee KH, Chan CK, Liew YM
    Phys Eng Sci Med, 2025 Jan 06.
    PMID: 39760844 DOI: 10.1007/s13246-024-01509-7
    Neointimal coverage and stent apposition, as assessed from intravascular optical coherence tomography (IVOCT) images, are crucial for optimizing percutaneous coronary intervention (PCI). Existing state-of-the-art computer algorithms designed to automate this analysis often treat lumen and stent segmentations as separate target entities, applicable only to a single stent type and overlook automation of preselecting which pullback segments need segmentation, thus limit their practicality. This study aimed for an algorithm capable of intelligently handling the entire IVOCT pullback across different phases of PCI and clinical scenarios, including the presence and coexistence of metal and bioresorbable vascular scaffold (BVS), stent types. We propose a multi-task deep learning model, named TriVOCTNet, that automates image classification/selection, lumen segmentation and stent struts segmentation within a single network by integrating classification, regression and pixel-level segmentation models. This approach allowed a single-network, single-pass implementation with all tasks parallelized for speed and convenience. A joint loss function was specifically designed to optimize each task in situations where each task may or may not be present. Evaluation on 4,746 images achieved classification accuracies of 0.999, 0.997, and 0.998 for lumen, BVS, and metal stent features, respectively. The lumen segmentation performance showed a Euclidean distance error of 21.72 μm and Dice's coefficient of 0.985. For BVS struts segmentation, the Dice's coefficient was 0.896, and for metal stent struts segmentation, the precision was 0.895 and sensitivity was 0.868. TriVOCTNet highlights its clinical potential due to its fast and accurate results, and simplicity in handling all tasks and scenarios through a single system.
  8. Sahmah NAA, Ling KMY, Abdullah Suhaimi SN, Md Pauzi SH, Wong YP, Tan GC
    Malays J Pathol, 2024 Dec;46(3):463-464.
    PMID: 39731496
    No abstract available.
  9. Karthika A, Sudhakar C, Karuppasamy P, Tamilselvi B, Meena S, Anantharaju KS, et al.
    Sci Rep, 2024 Nov 20;14(1):28714.
    PMID: 39567594 DOI: 10.1038/s41598-024-80146-2
    A highly selective, sensitive caffeic acid (CA) detection based on calcium oxide nanoparticles (CaO NPs) derived from extract of Moringa oleifera leaves decorated graphitic carbon nitride covalently grafted poly vinyl alcohol (CaO/g-C3N4/PVA) nanocomposite modified glassy carbon electrode (GCE) was studied. A facile sonochemical method was adapted to synthesis nanomaterials and characterized by HR-TEM (High resolution transmission electron microscopy), FT-IR (Fourier transform infrared spectroscopy), XRD (X-ray diffraction), FE-SEM (Field emission scanning electron microscopy), EDX (Energy dispersive X-ray analysis), Mapping and BET (Brunauer-Emmett-Teller) analysis, and electrochemical techniques. The nanocomposite modified GCE exhibited an excellent catalytic performance to the oxidation of CA under optimized conditions owing to better electron transfer efficiency, conductivity and high surface area of the electrode material. The present electrochemical sensor showed high selectivity towards the determination of 10 µM CA in the presence of 100-fold higher concentrations of interferents. The modified CA sensor exhibited a wide sensing linear range from 0.01 µM to 70 µM and the detection limit (LOD) was found to be 0.0024 µM (S/N = 3) in 0.1 M phosphate buffer saline (PBS) as a supporting electrolyte at pH 7.0. The fabricated CA sensor provides an excellent stability, reproducibility and selectivity for the determination of CA. The modified CA sensor was applied to real blood plasma samples and obtained good recovery (97.6-100.1%) results.
  10. Ke W, Lee YY, Tan CP, Li A, Zhang Y, Wang Y, et al.
    Food Chem, 2025 Feb 01;464(Pt 2):141722.
    PMID: 39442221 DOI: 10.1016/j.foodchem.2024.141722
    Diacylglycerol (DAG) is a novel functional structural lipid, but its application in base oils remains underexplored. This research investigated the effect of three liquid oils (groundnut oil, corn oil, and flaxseed oil), with varying polyunsaturated fatty acid (PUFA) (39.60, 69.50, and 77.65 %) and DAG content (0.00, 40.00, 80.00 %), on the crystallization behaviors of palm-based oil. DAG (40.00 %), obtained through enzymatic glycerolysis and molecular distillation, was found to stabilize the binary system with good compatibility and fine crystal structure. "Liquid" DAG played a dual role: diluting solid lipids, and promoting crystallization. Increasing DAG content led to larger crystalline domain size, while higher PUFA content accelerated crystallization and increased crystal orderliness, though decreasing crystal density. These results demonstrated the clear influence of PUFA and DAG content on palm-based oil crystallization. This knowledge can guide the utilization of different unsaturated DAGs for tailored fat crystallization in food application.
  11. Yunesh K, Adlan ASA, Wong TY, Gan F, Hamdan M, Tan PC
    Am J Obstet Gynecol MFM, 2025 Feb;7(2):101579.
    PMID: 39674509 DOI: 10.1016/j.ajogmf.2024.101579
    BACKGROUND: Induction of labor after 1 previous cesarean delivery with an unripe cervix have an especially high risk for unplanned cesarean delivery and uterine rupture. Mechanical balloon ripening is often preferred over prostaglandin-based ripening during induction of labor after 1 previous cesarean delivery, because uterine rupture has been associated with prostaglandin use. The transcervical Foley balloon can be dislodged past the ripened cervix and be retained comfortably in the vagina during passive placement. Tugging of the Foley catheter can be a noninvasive and tolerated method for timelier retrieval of the retained balloon; expediting discovery of a ripened cervix would permit an earlier follow-on amniotomy and oxytocin infusion, thereby hastening birth.

    OBJECTIVE: This study aimed to evaluate the effect of tugging of the Foley balloon for 30 seconds every 3 hours during 12 hours of scheduled placement in comparison with standard care (no tugging) on the induction to birth interval and patient satisfaction.

    STUDY DESIGN: This randomized controlled trial, conducted at a university hospital in Malaysia, recruited participants from April 2023 to March 2024. Eligible participants admitted for Foley balloon induction of labor who had 1 previous cesarean were recruited. After balloon insertion, participants were randomized to tugging or standard care. Following balloon displacement, a vaginal examination was performed to check the cervix. The examination findings then dictated the follow-on management of induction of labor after 1 previous cesarean according to standard practice. The primary outcomes were the induction (Foley insertion) to delivery interval and participants' satisfaction with the birthing process. Secondary outcomes were largely derived from the core outcome set for trials on induction of labor. Based on a superiority hypothesis, it was calculated that a sample size of 126 would be required to detect a 4-hour reduction in the induction-to-delivery interval and a 1.5 point increase in the satisfaction score based on a 0 to 10 numerical rating scale with the level of significance set at 0.05, power at 80%, and a 10% drop out rate. Comparative analyses using an intention-to-treat approach were conducted using t tests, Mann-Whitney U tests, chi square tests, and Fisher exact tests as appropriate.

    RESULTS: A total of 126 participants were randomized with 63 in each trial arm. The induction to birth interval was (mean ± standard deviation) 29.7±9.6 hours for those in the 3-hourly tugging group and 29.8±9.1 hours for those under standard care (P=.950), and maternal satisfaction with the induction of labor after 1 previous cesarean delivery birth process, assessed using a 0 to 10 numerical rating scale, was (median [interquartile range]) 8 [7-9] and 8 [7-9] (P=.936), respectively. The cesarean delivery rate was 37 of 63 (59%) vs 41 of 63 (65%) (P=.238) for those in the tugging group vs standard care, and the main indication for unplanned cesarean delivery was failure to progress with an incidence of 24 of 37 (65%) and 24 of 41 (59%) (P=.914) for tugging vs standard care arms, respectively. Three-hourly tugging also did not shorten the interval from induction to balloon displacement, amniotomy, the start of oxytocin infusion, or the second stage of labor.

    CONCLUSION: Tugging the catheter every 3 hours during scheduled 12-hour Foley balloon placement for induction of labor after 1 previous cesarean delivery did not hasten birth or improve patient satisfaction when compared with standard care.

  12. Cai R, Tan CP, Lai OM, Dang Y, Liu A, Choeng LZ, et al.
    Food Chem, 2025 Mar 15;468:142408.
    PMID: 39674013 DOI: 10.1016/j.foodchem.2024.142408
    Casein (CN) is a common allergen that is challenging to avoid in modern foods. The effect of cold argon plasma (CAP) on reducing CN antigenicity was investigated, focusing on alterations in epitope structure and sequence. CAP mainly contains hydroxyl radicals (∙OH). After a 12-min CAP treatment, the result of ELISA demonstrated an 80.46 % reduction in antigenicity. Transmission electron microscopy and electrophoresis revealed that certain CN aggregated, while multispectral analysis indicated that part of CN was fragmented into smaller peptides. The predictive 3D model suggested the disruption of linear epitopes located in the α-helix region might contribute to the reduced allergenicity. The peptide sequences were compared to the linear epitopes predicted by immunoinformatics approaches, revealing some reduction or breakage of key allergic sequences. Meanwhile, amino acids with aromatic side chains and hydrophobic groups were susceptible to CAP-induced modifications. This investigation demonstrated CAP could be beneficial for processing hypoallergenic foods.
  13. Tang R, Wu Y, Tan J, Guan B, Aridas NK, Talip MSA
    Sci Rep, 2025 Feb 17;15(1):5756.
    PMID: 39962080 DOI: 10.1038/s41598-025-89710-w
    WSN (wireless sensor network) plays a very important role in the agricultural environment monitoring. Although solar energy and other power supply methods are used to solve the node energy problem, the monitoring equipment works outdoors for a long time, which is easily affected by the environment. The supply is unstable to cause abnormalities in some nodes. So this study proposes a ZIRRA algorithm (ZigBee immune routing repair algorithm) for the rechargeable agricultural WSN. It simulates the working mechanism of the immune system and designs modules such as identification, processing, cloning and storage, which can provide a better repair strategy for abnormal nodes. Then it compares the quality of the backup nodes and replaces the backup nodes with poor quality, so that the optimal paths are maintained between source nodes and middle relay nodes, which increases the optimization ability of the algorithm. The experimental results show that the ZIRRA algorithm shows significant advantages in routing node repair mechanism. Compared with the LFRA, AR-TORA and ICCO algorithms, the average routing energy consumption of the ZIRRA algorithm reduced 35.33%, 58.37% and 45.15% , the data transmission delay reduced by 23.72%, 36.74% and 16.28%, and the average node survival time extended 25.08%, 33.55% and 13.88%. In addition, the maximum communication time and network throughput of the ZIRRA algorithm increased 44.49% and 13.03% at the scale of 1000 to 2000 nodes. These quantitative results show that the ZIRRA algorithm can improve the energy efficiency, transmission reliability and stability. The ZIRRA algorithm draws on the working principle of the immune system and repairs abnormal nodes through identification, processing, cloning and storage modules. Unlike the traditional node repair algorithms, the ZIRRA algorithm has higher efficiency and accuracy in identifying and processing abnormal nodes through the improved clone tracking algorithm. It uses an improved clone tracking algorithm in the learning module, improves the cloning and mutation mechanisms, and generates the optimal antibodies for repairing abnormal nodes. It also integrates an adaptive energy management strategy to cope with fluctuations in energy levels by prioritizing the transmission of critical data and reducing the frequency of non-essential communications, which improves the network stability and data transmission reliability.
  14. Xie P, Lai J, Lee YY, Xie R, He T, Tan CP, et al.
    Food Chem, 2025 Feb 12;475:143390.
    PMID: 39956073 DOI: 10.1016/j.foodchem.2025.143390
    With the development of the new tea drink market and increasing public attention to health, low-saturated fat aerated emulsions are becoming more popular. However, low saturation levels can easily lead to poor whipping capabilities. This study systematically investigated the mechanisms by which multiple enzyme-modified palm olein, used as a low-saturated fat base in aerated emulsions. After enzyme-catalyzed interesterification, fat crystallization properties were significantly enhanced, primarily through the promotion of fat crystal-membrane interaction effects between fat globules, which in turn, improved whipping capabilities. Additionally, it was found that the DAG form of palm olein easily adsorbed casein, resulting in a significant decrease in serum protein concentration, which weakened overrun due to insufficient air encapsulation. However, the whipping time was significantly reduced. Finally, by combining interesterified fats with DAG, the foam properties were greatly improved. This study provides important guidance for the industrial application of interesterified fats and DAG in aerated emulsions.
  15. Ng KL, Tan SN, Huan NC, Nasaruddin MZ, Othman N, Rahaman JAA
    Respirol Case Rep, 2024 Mar;12(3):e01333.
    PMID: 38528948 DOI: 10.1002/rcr2.1333
    Multiple myeloma (MM) is characterized by neoplastic proliferation of monoclonal antibody producing plasma cells. In clinical practice, pleural effusion is seen in up to 6% of MM patients, with many causative factors. Nevertheless, true myelomatous pleural effusion, defined as infiltration of the pleura by myeloma cells, is very rare. In this case report, we present two patients with biopsy proven myelomatous pleural effusion. The first patient developed myelomatous pleural effusion as initial presentation while the second patient's pleural effusion occurred during disease relapse. In both cases, prompt diagnosis via medical thoracoscopy (MT) followed by early commencement of myeloma specific chemotherapy led to clinical, biochemical, and radiological resolution and therefore were crucial steps in the management of myelomatous pleural effusion.
  16. Wang P, Lam Soh K, Geok Soh K, Xue L, Ning C, Tan Y, et al.
    Clin J Oncol Nurs, 2024 Mar 15;28(2):197-208.
    PMID: 38511915 DOI: 10.1188/24.CJON.197-208
    BACKGROUND: Patients with head and neck cancer are prone to malnutrition, which can lead to adverse health outcomes. A review of the literature revealed a lack of systematic reviews addressing risk factors for malnutrition in this population.

    OBJECTIVES: This study aimed to fill the knowledge gap by identifying risk factors for malnutrition in patients with head and neck cancer.

    METHODS: A comprehensive search was conducted in PubMed®, Web of Science, Embase®, and Cochrane Library databases, spanning from their inception until June 2023. Three researchers critically evaluated the inclusion and exclusion criteria. Two investigators independently screened the literature and extracted data, resolving any discrepancies through consensus.

    FINDINGS: This systematic review includes 18 studies. The results indicated that risk factors for malnutrition in patients with head and neck cancer encompass disease-related, genetic, lifestyle, nutritional health, physiologic, psychological, and treatment-related factors.

  17. Kunasegaran T, Balasubramaniam VRMT, Thirunavuk Arasoo VJ, Palanisamy UD, Tan YK, Ramadas A
    Sci Rep, 2024 Mar 22;14(1):6891.
    PMID: 38519592 DOI: 10.1038/s41598-024-57627-5
    The study addressed a significant gap in the profiling and understanding of the gut microbiota's influence on Malaysian Malay women with gestational diabetes mellitus (GDM). This prospective cohort study aimed to explore the intricate relationship between gut microbiota, dietary choices, and lifestyle factors among Malay women, both with and without GDM. The research specifically focused on participants during the second (T0) and third (T1) trimesters of pregnancy in Johor Bahru, Malaysia. In Part 1 of the study, a diverse pool of pregnant women at T0 was categorized into two groups: those diagnosed with GDM and those without GDM, with a total sample size of 105 individuals. The assessments encompassed demographic, clinical, lifestyle, and dietary factors at the T0 and T1 trimesters. Part 2 of the study delved into microbiome analysis, targeting a better understanding of the gut microbiota among the participants. Stool samples were randomly collected from 50% of the individuals in each group (GDM and non-GDM) at T0 and T1. The collected samples underwent processing, and 16s rRNA metagenomic analysis was employed to study the microbial composition. The results suggested an association between elevated body weight and glucose levels, poor sleep quality, lack of physical activity, greater intake of iron and meat, and reduced fruit consumption among women with GDM compared to non-GDM groups. The microbiome analysis revealed changes in microbial composition over time, with reduced diversity observed in the GDM group during the third trimester. The genera Lactiplantibacillus, Parvibacter, Prevotellaceae UCG001, and Vagococcus positively correlated with physical activity levels in GDM women in the second trimester. Similarly, the genus Victivallis exhibited a strong positive correlation with gravida and parity. On the contrary, the genus Bacteroides and Roseburia showed a negative correlation with omega-3 polyunsaturated fatty acids (PUFAs) in women without GDM in the third trimester. The study highlighted the multifaceted nature of GDM, involving a combination of lifestyle factors, dietary choices, and changes in gut microbiota composition. The findings emphasized the importance of considering these interconnected elements in understanding and managing gestational diabetes among Malaysian Malay women. Further exploration is essential to comprehend the mechanisms underlying this relationship and develop targeted interventions for effective GDM management.
  18. Ng YL, Segaran S, Yim CCW, Lim BK, Hamdan M, Gan F, et al.
    Am J Obstet Gynecol, 2024 Dec;231(6):651.e1-651.e11.
    PMID: 38521233 DOI: 10.1016/j.ajog.2024.03.018
    BACKGROUND: Contemporary guidance for preoperative feeding allows solids up to 6 hours and clear fluids up to 2 hours before anesthesia. Clinical trial evidence to support this approach for cesarean delivery is lacking. Many medical practitioners continue to follow conservative policies of no intake from midnight to the time of surgery, especially in pregnant women.

    OBJECTIVE: This study aimed to evaluate the pragmatic approach of permitting free access to water up to the call to dispatch to the operating theater vs fasting from midnight in preoperative oral intake restriction for planned cesarean delivery under spinal anesthesia on perioperative vomiting and maternal satisfaction.

    STUDY DESIGN: A randomized controlled trial was conducted in the obstetrical unit of the University of Malaya Medical Centre from October 2020 to May 2022. A total of 504 participants scheduled for planned cesarean delivery were randomized: 252 undergoing preoperative free access to water up to the call to dispatch to the operating theater (intervention group) and 252 undergoing fasting from midnight (fasting arm). The primary outcomes were perioperative vomiting and maternal satisfaction. Analyses were performed using t test, Mann-Whitney U test, and chi-square test, as appropriate.

    RESULTS: Of note, 9 of 252 patients (3.6%) in the intervention group and 24 of 252 patients (9.5%) in the control group had vomiting at up to 6 hours after completion of cesarean delivery (relative risk, 0.38; 95% confidence interval, 0.18-0.79; P=.007), and the maternal satisfaction scores (0-10 visual numerical rating scale) were 9 (interquartile range, 8-10) in the intervention group and 5 (interquartile range, 3-7) in the control group (P

  19. Khalid K, Lim HX, Anwar A, Tan SH, Hwang JS, Ong SK, et al.
    AAPS PharmSciTech, 2024 Mar 12;25(3):60.
    PMID: 38472523 DOI: 10.1208/s12249-024-02778-x
    The protective efficacies of current licensed vaccines against COVID-19 have significantly reduced as a result of SARS-CoV-2 variants of concern (VOCs) which carried multiple mutations in the Spike (S) protein. Considering that these vaccines were developed based on the S protein of the original SARS-CoV-2 Wuhan strain, we designed a recombinant plasmid DNA vaccine based on highly conserved and immunogenic B and T cell epitopes against SARS-CoV-2 Wuhan strain and the Omicron VOC. Literature mining and bioinformatics were used to identify 6 immunogenic peptides from conserved regions of the SARS-CoV-2 S and membrane (M) proteins. Nucleotide sequences encoding these peptides representing highly conserved B and T cell epitopes were cloned into a pVAX1 vector to form the pVAX1/S2-6EHGFP recombinant DNA plasmid vaccine. The DNA vaccine was intranasally or intramuscularly administered to BALB/c mice and evaluations of humoral and cellular immune responses were performed. The intramuscular administration of pVAX1/S2-6EHGFP was associated with a significantly higher percentage of CD8+ T cells expressing IFN-γ when compared with the empty vector and PBS controls. Intramuscular or intranasal administrations of pVAX1/S2-6EHGFP resulted in robust IgG antibody responses. Sera from mice intramuscularly immunized with pVAX1/S2-6EHGFP were found to elicit neutralizing antibodies capable of SARS-CoV-2 Omicron variant with the ACE2 cell surface receptor. This study demonstrated that the DNA vaccine construct encoding highly conserved immunogenic B and T cell epitopes was capable of eliciting potent humoral and cellular immune responses in mice.
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