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  1. Choe WL, Ayob AZ, Ahmad Tarmizi MD, Salehen N, Ramasamy TS
    In Vitro Cell Dev Biol Anim, 2026 Sep;62(8):1131-1142.
    PMID: 42479324 DOI: 10.1007/s11626-026-01204-9
    This work establishes a robust and reproducible 96-well plate-based 3D HepG2 tumour spheroid model for drug screening applications. A 7-d culture protocol was optimised to generate HepG2 spheroid model using 96-well ultra-low attachment plates with 5 seeding densities (500, 1000, 2500, 5000 and 10,000 cells/well). Spheroids were evaluated for morphology, viability and proliferation. The optimized model was treated with doxorubicin and sorafenib at their respective IC50 values (2.4 µM and 5.3 µM, determined in HepG2 monolayer). Drug-specific responses were assessed via spheroid growth, viability and expression of apoptotic and drug resistance markers. Spheroids seeded at 500 cells/well exhibited optimal characteristics, including sustained proliferative capacity (up to 30-fold increase relative to day 1) and progressive spheroidal growth (1.85-fold-change in diameter); hence, it was selected for further experiments. Day 4 was identified as the optimal treatment point based on morphology, viability and diameter progression. The 72-h IC50 values were determined to be 2.4 µM for doxorubicin and 5.3 µM for sorafenib; these concentrations were chosen for subsequent treatments on HepG2-derived spheroids. Doxorubicin induced a delayed but potent cytotoxic response, while sorafenib triggered a slower, sustained effect, distinct from its rapid action in monolayer cultures. Furthermore, spheroid diameter did not correlate with viability or proliferation decline, highlighting its limitation as a sole readout. Molecular profiling revealed drug-specific responses in which ABCB1 was upregulated by doxorubicin, while ABCC2 was selectively induced by sorafenib. Sorafenib progressively reduced BAX/BCL2 ratio, suggesting potential resistance development. This study presents an optimized HepG2 spheroid model with validated culture and treatment parameters, capturing drug-specific cellular and molecular responses for therapeutic screening and mechanistic studies in hepatocellular carcinoma.
  2. Elagili F, Mat Nor NA, Sainal Y, Salmi MI, Md Nor A
    Cureus, 2026 Oct;18(10):e117470.
    PMID: 42985616 DOI: 10.7759/cureus.117470
    Solitary rectal ulcer syndrome (SRUS) is an uncommon, chronic disorder of rectal mucosal prolapse that typically presents with rectal bleeding, mucus discharge, and straining, and can occasionally present as a polypoid mass rather than a discrete ulcer. Acute incarceration of SRUS through the anal canal, requiring emergency surgery, does not appear to have been previously reported. We describe an adolescent boy with a two-year history of biopsy-confirmed SRUS, managed conservatively with only partial symptomatic response, who presented with acute, irreducible incarceration of a large, actively bleeding polypoidal mass protruding through the anal canal. He underwent emergency examination under anaesthesia with complete transanal excision, achieving simultaneous diagnostic and therapeutic control, and histopathology confirmed SRUS without dysplasia or malignancy. He remained completely asymptomatic with no recurrence at long-term follow-up extending to nearly six years postoperatively. This case illustrates an apparently novel presentation of SRUS as an anorectal surgical emergency, supports complete transanal excision as effective definitive treatment, and is placed in the context of the wider published literature on polypoid and prolapse-related SRUS.
  3. Mohd Rosli NS, Abdullah R, Yaacob JS, Mohamed Zuki F, Khairul Anuar MI, Lim ZQ
    Environ Sci Pollut Res Int, 2025 Sep;32(45):25959-25977.
    PMID: 41217709 DOI: 10.1007/s11356-025-37070-3
    Copper (Cu) contamination in water and soil seriously threatens environmental and human health. This study evaluates the synergistic effect of palm kernel shell biochar (PKB) and nano-hydroxyapatite (nHAp) as green adsorbents for Cu remediation. Materials were characterized using SEM, XRD, FTIR, and BET analysis. An adsorption study was evaluated using the batch method, and soil incubation experiments were conducted to determine the soil's physicochemical properties, Cu bioavailability, Cu fractionation in soil, and corn seed germination. PKB exhibited a higher surface area (158.44 m2/g) compared to nHAp (52.65 m2/g), while nHAp showed larger pore volume (0.26 cm3/g) and pore size (19.63 nm). Batch adsorption experiments demonstrated that the Langmuir isotherm model best fit the data (R2 > 0.95), indicating monolayer adsorption. The combined adsorbent (CBnHAp at 2.2 g) achieved the highest maximum adsorption capacity (qmax = 3.49 mg/g). In a 6-week soil incubation experiment, CBnHAp (T5) significantly increased soil pH from 5.30 to 6.30 and enhanced soil organic matter (SOM) content to 7.75%. This treatment reduced the available Cu concentration from 166.38 mg/kg to as low as 29.93 mg/kg, achieving up to 74.0% reduction in Cu bioavailability. Sequential extraction revealed that CBnHAp shifted Cu from the more bioavailable fractions (F1 and F2) to less mobile fractions (F3 and F4). Furthermore, a corn seed germination bioassay demonstrated that CBnHAp (T5) improved germination rates by up to 73.00%, with significant increases in root and shoot growth compared to the control. This study demonstrates that CBnHAp is a highly effective, sustainable, and eco-friendly approach for remediating Cu-contaminated environments, offering a promising solution for water and soil decontamination.
  4. Rashid AA, Mansor MS, Hashim NA, Moharir SR, Abdul Manaf N
    Environ Sci Pollut Res Int, 2025 Jul;32(32):19355-19371.
    PMID: 39017877 DOI: 10.1007/s11356-024-34382-8
    Solar thermal energy storage (TES) is an outstanding innovation that can help solar technology remain relevant during nighttime and cloudy days. TES using phase change material (PCM) is an avant-garde solution for a clean and renewable energy transition. The present study unveils the unique potential of MXene as a performance enhancer in lauric acid (LA), which functions as a base PCM. The addition of graphene nanoplatelet (GNP) into the LA-MXene composite is prepared to comprehend and evaluate the benefits and detriments of adding carbon-based nanomaterial into the PCM via a two-step homogenizing method. A similar weight percentage of MXene and GNP at 0.75 was used for composite synthesis. The study found that the enthalpy of LA-MXene is comparable to LA at 169.87 J/kg and greater than LA-MXene/GNP, which has 137.53 J/kg. Regarding thermal storage performance, LA-MXene exhibited outstanding performance compared to LA-MXene/GNP in terms of enthalpy efficiency (λ) and relative enthalpy efficiency (η), achieving 95.4% and 96.1%, respectively. This is supported by the XPS spectra, which show that the crosslinking structure acted as a barrier, reinforcing the material and preventing further thermal degradation. This has resulted in robust and denser shells that significantly improved light absorption, enhancing both the photothermal conversion and thermal energy storage efficiency of LA/MXene. The present study reveals that LA-MXene is a promising and optimal candidate for the feasibility and reliability of TES in solar renewable energy applications. It was observed that the incorporation of exclusive MXene may effectively address the limitations of LA as a conventional PCM and surpass the traditional role of GNP. This study offers valuable insights into the superior performance of MXene alone, eliminating the need for doping with various nanomaterials and thereby reducing the complexity in synthesizing the PCM.
  5. Ghumman ASM, Shamsuddin R, Qomariyah L, Lim JW, Sami A, Ayoub M
    Environ Sci Pollut Res Int, 2025 Jul;32(32):19253-19275.
    PMID: 38622423 DOI: 10.1007/s11356-024-33317-7
    Metal-organic frameworks (MOFs) have emerged as highly promising adsorbents for removing heavy metals from wastewater due to their tunable structures, high surface areas, and exceptional adsorption capacities. This review meticulously examines and summarizes recent advancements in producing and utilizing MOF-based adsorbents for sequestering heavy metal ions from water. It begins by outlining and contrasting commonly employed methods for synthesizing MOFs, such as solvothermal, microwave, electrochemical, ultrasonic, and mechanochemical. Rather than delving into the specifics of adsorption process parameters, the focus shifts to analyzing the adsorption capabilities and underlying mechanisms against critical metal(loid) ions like chromium, arsenic, lead, cadmium, and mercury under various environmental conditions. Additionally, this article discusses strategies to optimize MOF performance, scale-up production, and address environmental implications. The comprehensive review aims to enhance the understanding of MOF-based adsorption for heavy metal remediation and stimulate further research in this critical field. In brief, this review article presents a comprehensive overview of the contemporary information on MOFs as an effective adsorbent and the challenges being faced by these adsorbents for heavy metal mitigation (including stability, cost, environmental issues, and optimization), targeting to develop a vital reference for future MOF research.
  6. Kamarudin SNN, Warid MNM, Mahmud MZH, Yaacob H, Rogo KU, Lazi MKAM
    Environ Sci Pollut Res Int, 2025 Dec;32(59):31606-31624.
    PMID: 39753845 DOI: 10.1007/s11356-024-35814-1
    Sustainable pavement is essential for country development, offering durable, environmentally friendly, and cost-effective infrastructure. For Malaysia, sustainable pavement supports Sustainable Development Goals (SDGs) 9 and 11 while addressing road deterioration caused by increasing traffic volumes and loads. This deterioration shortens pavement service life and necessitates frequent maintenance, driving the need for innovative solutions. To enhance pavement sustainability, researchers have explored additives like plastic waste, specifically low-density polyethylene (LDPE), a major component of packaging waste. LDPE improves durability but is prone to fatigue cracking. Addressing this, physical treatments of LDPE can improve its surface topography, compaction properties, and binder-aggregate adhesion, optimizing pavement performance. This study evaluated hot mix asphalt mixtures incorporating untreated plastic (UP) and treated plastic (TP) additives under varied compaction efforts and mixing temperatures. Performance tests, including Marshall stability, resilient modulus, creep, and tensile strength ratio (TSR), were conducted. Results showed that the TP50L mixture (with 25% fewer compaction blows and a mixing temperature reduced by 25 °C) performed better than the UP and control mixtures, demonstrating 30% greater fatigue resistance, 11% higher rutting resistance, and 12% improved moisture damage performance. The superior performance of TP additives is attributed to their rougher surface, enhancing the binder-aggregate bond and aggregate properties. The study concludes that treated plastic additives not only strengthen pavements against permanent deformation but also reduce compaction efforts and mixing temperatures, leading to lower energy use during construction. By incorporating plastic waste into pavements, this approach promotes environmental sustainability, reduces maintenance needs, and supports eco-friendly infrastructure development.
  7. Ahmad Zuber MF, Che Roos NA, Mat Jusoh R, Manaf NA
    PLoS One, 2026;21(9):e0356883.
    PMID: 42752658 DOI: 10.1371/journal.pone.0356883
    BACKGROUND: Drug-drug interactions (DDIs) remain a major contributor to preventable patient harm, particularly in the context of polypharmacy. Over the past two decades, interventions to mitigate inappropriate prescribing have evolved from deterministic, rule-based clinical decision support toward increasingly complex data-driven and stochastic models. However, the extent to which these methodological advances translate into improved clinical safety remains unclear.

    METHODS: We conducted a systematic review in accordance with PRISMA 2020 guidelines, guided by the SPIDER framework. PubMed, Scopus, ScienceDirect, and IEEE Xplore were searched from inception to October 2025 for primary studies evaluating computational or clinical decision support interventions aimed at reducing DDIs or inappropriate prescribing. Eligible studies included deterministic rule-based systems, ontological frameworks, and artificial intelligence-driven predictive models. Risk of bias was assessed using the Prediction Model Risk of Bias Assessment Tool, extended with artificial intelligence-specific considerations (PROBAST+AI). Due to heterogeneity in study designs and outcome measures, findings were synthesized narratively.

    RESULTS: Ten studies met the inclusion criteria. Earlier interventions predominantly employed deterministic approaches focused on workflow optimization, alert management, and policy enforcement, demonstrating modest improvements in prescribing processes but inconsistent links to patient-level outcomes. More recent studies applied stochastic and generative models using high-dimensional clinical datasets to predict DDIs, reporting strong internal performance metrics. However, PROBAST+AI assessment identified a consistently high risk of bias in the analysis domain for AI-driven studies, primarily due to limited external validation, insufficient calibration reporting, and unclear handling of overfitting and data leakage.

    CONCLUSIONS: While stochastic and generative models offer enhanced predictive capacity for DDI detection, current evidence does not demonstrate a proportional improvement in clinically reliable decision support. Deterministic systems provide transparency and safety constraints but lack adaptability to patient-specific contexts. Future interventions must prioritize hybrid architectures that integrate explainable rule-based guardrails with rigorously validated stochastic models to ensure that methodological complexity yields reproducible gains in patient safety.

  8. Asghar M, Omar RA, Yahya R, Yap AU, Fareed MA
    Dent Med Probl, 2026 Oct 30.
    PMID: 42993046 DOI: 10.17219/dmp/212537
    Silver diamine fluoride (SDF) is an aqueous solution of silver (Ag+) and fluoride (F-) ions stabilized by ammonia. It is regarded by the World Health Organization (WHO) as a safe, efficacious and cost-effective pharmacological agent for the minimally invasive management of dental caries. The Ag+ ions in SDF mainly exert an antibacterial effect, while the F- ions remineralize dental tissues. Recently, SDF has also been approved by the US Food and Drug Administration (FDA) for desensitization. The main advantages of SDF over other treatment options are its shorter application time, ease of application and no need for anesthesia. Furthermore, it is suitable for individuals with physical or mental disabilities, non-ambulatory patients, and elderly patients, as it can also be applied by dental nurses, hygienists and healthcare workers. Various studies have confirmed the efficacy of SDF in arresting and preventing coronal and root caries, desensitizing teeth, and disinfecting root canals, highlighting its potential to reduce the global healthcare and economic burden associated with untreated dental caries. The aim of this review is to provide an updated overview of SDF properties and its use in the minimally invasive management of dental caries.
  9. Mohd Abd Razak MR, Mohmad Misnan N, Md Jelas NH, Norahmad NA, Muhammad A, Ho TCD, et al.
    BMC Complement Altern Med, 2018 Dec 05;18(1):320.
    PMID: 30518360 DOI: 10.1186/s12906-018-2390-7
    BACKGROUND: Carica papaya leaf juice (CPLJ) was well known for its thrombocytosis activity in rodents and dengue patients. However, the effect of CPLJ treatment on other parameters that could contribute to dengue pathogenesis such as nonstructural protein 1 (NS1) production and viremia level have never been highlighted in any clinical and in vivo studies. The aim of this study is to investigate the effect of freeze-dried CPLJ treatment on NS1 and viremia levels of dengue fever mouse model.

    METHODS: The dengue infection in mouse model was established by inoculation of non-mouse adapted New Guinea C strain dengue virus (DEN-2) in AG129 mice. The freeze-dried CPLJ compounds were identified by Ultra-High Performance Liquid Chromatography High Resolution Accurate Mass Spectrometry analysis. The infected AG129 mice were orally treated with 500 mg/kg/day and 1000 mg/kg/day of freeze-dried CPLJ, starting on day 1 post infection for 3 consecutive days. The blood samples were collected from submandibular vein for plasma NS1 assay and quantitation of viral RNA level by quantitative reverse transcription PCR.

    RESULTS: The AG129 mice infected with dengue virus showed marked increase in the production of plasma NS1, which was detectable on day 1 post infection, peaked on day 3 post-infection and started to decline from day 5 post infection. The infection also caused splenomegaly. Twenty-four compounds were identified in the freeze-dried CPLJ. Oral treatment with 500 mg/kg/day and 1000 mg/kg/day of freeze-dried CPLJ did not affect the plasma NS1 and dengue viral RNA levels. However, the morbidity level of infected AG129 mice were slightly decreased when treated with freeze-dried CPLJ.

    CONCLUSION: Oral treatment of 500 mg/kg/day and 1000 mg/kg/day of freeze-dried CPLJ at the onset of viremia did not affect the plasma NS1 and viral RNA levels in AG129 mice infected with non-mouse adapted New Guinea C strain dengue virus.

  10. Norahmad NA, Mohd Abd Razak MR, Abdullah NR, Sastu UR, Imwong M, Muniandy PK, et al.
    PLoS One, 2016;11(10):e0165515.
    PMID: 27788228 DOI: 10.1371/journal.pone.0165515
    Chloroquine (CQ) and fansidar (sulphadoxine-pyrimethamine, SP) were widely used for treatment of Plasmodium falciparum for several decades in Malaysia prior to the introduction of Artemisinin-based Combination Therapy (ACT) in 2008. Our previous study in Kalabakan, located in south-east coast of Sabah showed a high prevalence of resistance to CQ and SP, suggesting the use of the treatment may no longer be effective in the area. This study aimed to provide a baseline data of antimalarial drug resistant markers on P. falciparum isolates in Kota Marudu located in the north-east coast of Sabah. Mutations on genes associated with CQ (pfcrt and pfmdr1) and SP (pfdhps and pfdhfr) were assessed by PCR amplification and restriction fragment length polymorphism. Mutations on the kelch13 marker (K13) associated with artemisinin resistance were determined by DNA sequencing technique. The assessment of pfmdr1 copy number variation associated with mefloquine resistant was done by real-time PCR technique. A low prevalence (6.9%) was indicated for both pfcrt K76T and pfmdr1 N86Y mutations. All P. falciparum isolates harboured the pfdhps A437G mutation. Prevalence of pfdhfr gene mutations, S108N and I164L, were 100% and 10.3%, respectively. Combining the different resistant markers, only two isolates were conferred to have CQ and SP treatment failure markers as they contained mutant alleles of pfcrt and pfmdr1 together with quintuple pfdhps/pfdhfr mutation (combination of pfdhps A437G+A581G and pfdhfr C59R+S108N+I164L). All P. falciparum isolates carried single copy number of pfmdr1 and wild type K13 marker. This study has demonstrated a low prevalence of CQ and SP resistance alleles in the study area. Continuous monitoring of antimalarial drug efficacy is warranted and the findings provide information for policy makers in ensuring a proper malaria control.
  11. Tajau R, Rohani R, Alias MS, Mudri NH, Abdul Halim KA, Harun MH, et al.
    Polymers (Basel), 2021 Jun 04;13(11).
    PMID: 34199699 DOI: 10.3390/polym13111865
    In countries that are rich with oil palm, the use of palm oil to produce bio-based acrylates and polyol can be the most eminent raw materials used for developing new and advanced natural polymeric materials involving radiation technique, like coating resins, nanoparticles, scaffold, nanocomposites, and lithography for different branches of the industry. The presence of hydrocarbon chains, carbon double bonds, and ester bonds in palm oil allows it to open up the possibility of fine-tuning its unique structures in the development of novel materials. Cross-linking, reversible addition-fragmentation chain transfer (RAFT), polymerization, grafting, and degradation are among the radiation mechanisms triggered by gamma, electron beam, ultraviolet, or laser irradiation sources. These radiation techniques are widely used in the development of polymeric materials because they are considered as the most versatile, inexpensive, easy, and effective methods. Therefore, this review summarized and emphasized on several recent studies that have reported on emerging radiation processing technologies for the production of radiation curable palm oil-based polymeric materials with a promising future in certain industries and biomedical applications. This review also discusses the rich potential of biopolymeric materials for advanced technology applications.
  12. Younas M, Zou H, Laraib T, Rajpoot NA, Khan NA, Zaidi AA, et al.
    PLoS One, 2021;16(9):e0256449.
    PMID: 34529693 DOI: 10.1371/journal.pone.0256449
    Mungbean yellow mosaic virus (MYMV) is an important constraint in successful production of mungbean (Vigna radiata L.) in many countries, including Pakistan. The MYMV spreads by insect vector whitefly (Bemisia tabaci Gennadius). The use of resistant cultivars is the most effective management tactics for MYMV. Twenty mungbean varieties/lines were screened against insect vector of MYMV under field condition in the current study. Resistance levels for varieties/lines were assessed through visual scoring of typical disease symptoms. Furthermore, the impacts of two insecticides 'Imidacloprid' and 'Thiamethoxam' and two plant extracts, i.e., neem (Azadirachta indica), and Eucalyptus (Eucalyptus camaldulensis) were tested on the suppression of whitefly. Field screening indicated that none of the tested varieties/lines proved immune/highly resistant, while significant variations were recorded among varieties/lines for resistance level. All varieties/lines were systemically infected with MYMV. The varieties 'AARI-2006' and 'Mung-14043' were considered as resistant to MYMV based on visual symptoms and the lowest vector population. These varieties were followed by 'NM-2006' and 'NL-31', which proved as moderately resistant to MYMV. All remaining varieties/lines were grouped as moderately to highly susceptible to MYMV based on visual symptoms' scoring. These results revealed that existing mungbean germplasm do not possess high resistance level MYMV. However, the lines showing higher resistance in the current study must be exploited in breeding programs for the development of resistant mungbean varieties/lines against MYMV. Imidacloprid proved as the most effective insecticide at all concentrations to manage whitefly population. Therefore, use of the varieties with higher resistance level and spraying Imidacloprid could lower the incidence of MYMV.
  13. Sattar A, Wang X, Abbas T, Sher A, Ijaz M, Ul-Allah S, et al.
    PLoS One, 2021;16(10):e0256984.
    PMID: 34618822 DOI: 10.1371/journal.pone.0256984
    Wheat is an important global staple food crop; however, its productivity is severely hampered by changing climate. Erratic rain patterns cause terminal drought stress, which affect reproductive development and crop yield. This study investigates the potential and zinc (Zn) and silicon (Si) to ameliorate terminal drought stress in wheat and associated mechanisms. Two different drought stress levels, i.e., control [80% water holding capacity (WHC) was maintained] and terminal drought stress (40% WHC maintained from BBCH growth stage 49 to 83) combined with five foliar-applied Zn-Si combinations (i.e., control, water spray, 4 mM Zn, 40 mM Si, 4 mM Zn + 40 mM Si applied 7 days after the initiation of drought stress). Results revealed that application of Zn and Si improved chlorophyll and relative water contents under well-watered conditions and terminal drought stress. Foliar application of Si and Zn had significant effect on antioxidant defense mechanism, proline and soluble protein, which showed that application of Si and Zn ameliorated the effects of terminal drought stress mainly by regulating antioxidant defense mechanism, and production of proline and soluble proteins. Combined application of Zn and Si resulted in the highest improvement in growth and antioxidant defense. The application of Zn and Si improved yield and related traits, both under well-watered conditions and terminal drought stress. The highest yield and related traits were recorded for combined application of Zn and Si. For grain and biological yield differences among sole and combined Zn-Si application were statistically non-significant (p>0.05). In conclusion, combined application of Zn-Si ameliorated the adverse effects of terminal drought stress by improving yield through regulating antioxidant mechanism and production of proline and soluble proteins. Results provide valuable insights for further cross talk between Zn-Si regulatory pathways to enhance grain biofortification.
  14. Abubakar MB, Usman D, El-Saber Batiha G, Cruz-Martins N, Malami I, Ibrahim KG, et al.
    Front Pharmacol, 2021;12:629935.
    PMID: 34012391 DOI: 10.3389/fphar.2021.629935
    The 2019 coronavirus disease (COVID-19) is a potentially fatal multisystemic infection caused by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). Currently, viable therapeutic options that are cost effective, safe and readily available are desired, but lacking. Nevertheless, the pandemic is noticeably of lesser burden in African and Asian regions, where the use of traditional herbs predominates, with such relationship warranting a closer look at ethnomedicine. From a molecular viewpoint, the interaction of SARS-CoV-2 with angiotensin converting enzyme 2 (ACE2) is the crucial first phase of COVID-19 pathogenesis. Here, we review plants with medicinal properties which may be implicated in mitigation of viral invasion either via direct or indirect modulation of ACE2 activity to ameliorate COVID-19. Selected ethnomedicinal plants containing bioactive compounds which may prevent and mitigate the fusion and entry of the SARS-CoV-2 by modulating ACE2-associated up and downstream events are highlighted. Through further experimentation, these plants could be supported for ethnobotanical use and the phytomedicinal ligands could be potentially developed into single or combined preventive therapeutics for COVID-19. This will benefit researchers actively looking for solutions from plant bioresources and help lessen the burden of COVID-19 across the globe.
  15. Rehman AU, Tasleem Z, Muhammad SA, Rasool MF, Shah S, Jabeen G, et al.
    Front Public Health, 2024;12:1365744.
    PMID: 39494082 DOI: 10.3389/fpubh.2024.1365744
    BACKGROUND: The COVID-19 comorbid population is at higher risk of developing severe health issues like acute respiratory distress syndrome, coagulation syndrome, metabolic acidosis, and septic shock, potentially leading to patient death. Patients' knowledge, attitudes, and practices (KAP) significantly influence their response to the pandemic and aid in enhancing health policy implementation.

    OBJECTIVE: To identify and evaluate the pattern and associated factors to COVID-19 knowledge, attitude, and practice among individuals with comorbidities.

    METHODOLOGY: The systematic review followed the PRISMA guidelines. Relevant studies assessing the KAP of comorbid patients were retrieved by carefully searching the PubMed and Google Scholar databases. The appraisal tool for cross-sectional studies was used to determine the quality of the included studies and the risk of biases.

    RESULTS: Eighteen studies met the inclusion criteria and were included in the review. The pooled sample size of the included studies was 9,104. Different comorbidities reported in the studies include hypertension, diabetes, psychological disorders, and cancer. Pooled analysis showed that 65% of patients showed good knowledge, 57% of patients showed a positive attitude and 51% of patients followed good practices to manage the COVID-19 in presence of their comorbid condition. Significant factors impacting knowledge, attitude and practice in COVID-19 comorbid patients were ethnicity OR 1.78 [95% CI 1.35-2.32]; educational status 3.2 [2.79-3.58]; urban residence 2.43 [1.65-3.02]; employment Status 1.67[1.34-2.12]; financial Status 4.02[3.66-4.38]; occupation 3.65[3.31-4.25]; information Source 2.64[2.19-3.26]; comorbidity 3.28[2.78-3.61]; and duration of chronic illness 1.59[1.31-2.04].

    CONCLUSION: Comorbid COVID-19 patients showed good knowledge, positive attitude and good practice towards the management of the disease.

  16. Erukainure OL, Hafizur RM, Kabir N, Choudhary MI, Atolani O, Banerjee P, et al.
    Front Pharmacol, 2018;9:8.
    PMID: 29449808 DOI: 10.3389/fphar.2018.00008
    Type 2 diabetes is the most prominent of all diabetes types, contributing to global morbidity and mortality. Availability and cost of treatment with little or no side effect especially in developing countries, remains a huge burden. This has led to the search of affordable alternative therapies especially from medicinal plants. In this study, the antidiabetic effect of the methanolic extract, dichloromethane (DCM), butanol (BuOH) and aqueous fractions ofClerodendrum volubileleaves were investigated in type 2 diabetic rats for their effect on glucose homeostasis, serum insulin level and hepatic biomarkers, lipid profile, pancreatic redox balance and Ca2+levels, and β-cell distribution and function. The DCM was further fractionated to isolate the active compounds, biochanin and 5,7,4'-trimethoxykaempferol. They were investigated for their toxicity and ADMET properties, α-glucosidase and angiotensin I converting enzyme (ACE) inhibitory activitiesin silico. There were significant (p< 0.05) decrease in blood glucose, cholesterol, LDL-C, vLDL-C, triglyceride, AST and ALT levels in all treated groups, with DCM fraction showing the best activity. All treated rats showed significantly (p< 0.05) improved anti-oxidative activities. Treatment with the DCM fraction led to significant (p< 0.05) increased serum insulin and pancreatic Ca2+levels, as well as improved β-cell distribution and function. DCM fraction also showed improved glucose tolerance. DCM fraction dose-dependently inhibited ACE activity. The toxicity class of the isolated compounds was predicted to be 5. They were also predicted to be potent inhibitors of cytochrome P (CYPs) 1A2, 2D6 and 3A4. They docked well with α-glucosidase and ACE. These results indicate the therapeutic potential of the plant against type 2 diabetes, with the DCM fraction being the most potent which may be attributed to the isolated flavones. It further suggests antihypertensive potentials of the DCM fraction. However, inhibition of CYPs by the flavones may suggest caution in usage with other prescribed drugs metabolized by these enzymes.
  17. Lawan A, Jesse FFA, Idris UH, Odhah MN, Arsalan M, Muhammad NA, et al.
    Microb Pathog, 2018 Apr;117:175-183.
    PMID: 29471137 DOI: 10.1016/j.micpath.2018.02.039
    Innumerable Escherichia coli of animal origin are identified, which are of economic significance, likewise, cattle, sheep and goats are the carrier of enterohaemorrhagic E. coli, which are less pathogenic, and can spread to people by way of direct contact and through the contamination of foodstuff or portable drinking water, causing serious illness. The immunization of ruminants has been carried out for ages and is largely acknowledged as the most economical and maintainable process of monitoring E. coli infection in ruminants. Yet, only a limited number of E. coli vaccines are obtainable. Mucosal surfaces are the most important ingress for E. coli and thus mucosal immune responses function as the primary means of fortification. Largely contemporary vaccination processes are done by parenteral administration and merely limited number of E. coli vaccines are inoculated via mucosal itinerary, due to its decreased efficacy. Nevertheless, aiming at maximal mucosal partitions to stimulate defensive immunity at both mucosal compartments and systemic site epitomises a prodigious task. Enormous determinations are involved in order to improve on novel mucosal E. coli vaccines candidate by choosing apposite antigens with potent immunogenicity, manipulating novel mucosal itineraries of inoculation and choosing immune-inducing adjuvants. The target of E. coli mucosal vaccines is to stimulate a comprehensive, effective and defensive immunity by specifically counteracting the antibodies at mucosal linings and by the stimulation of cellular immunity. Furthermore, effective E. coli mucosal vaccine would make vaccination measures stress-free and appropriate for large number of inoculation. On account of contemporary advancement in proteomics, metagenomics, metabolomics and transcriptomics research, a comprehensive appraisal of the immeasurable genes and proteins that were divulged by a bacterium is now in easy reach. Moreover, there exist marvellous prospects in this bourgeoning technologies in comprehending the host bacteria affiliation. Accordingly, the flourishing knowledge could massively guarantee to the progression of immunogenic vaccines against E. coli infections in both humans and animals. This review highlight and expounds on the current prominence of mucosal and systemic immunogenic vaccines for the prevention of E. coli infections in ruminants.
  18. Ahmad N, Samiulla DS, Teh BP, Zainol M, Zolkifli NA, Muhammad A, et al.
    Pharmaceutics, 2018 Jul 11;10(3).
    PMID: 29997335 DOI: 10.3390/pharmaceutics10030090
    Eurycoma longifolia is one of the commonly consumed herbal preparations and its major chemical compound, eurycomanone, has been described to have antimalarial, antipyretic, aphrodisiac, and cytotoxic activities. Today, the consumption of E. longifolia is popular through the incorporation of its extract in food items, most frequently in drinks such as tea and coffee. In the current study, the characterisation of the physicochemical and pharmacokinetic (PK) attributes of eurycomanone were conducted via a series of in vitro and in vivo studies in rats and mice. The solubility and chemical stability of eurycomanone under the conditions of the gastrointestinal tract environment were determined. The permeability of eurycomanone was investigated by determining its distribution coefficient in aqueous and organic environments and its permeability using the parallel artificial membrane permeability assay system and Caco-2 cultured cells. Eurycomanone's stability in plasma and its protein-binding ability were measured by using an equilibrium dialysis method. Its stability in liver microsomes across species (mice, rat, dog, monkey, and human) and rat liver hepatocytes was also investigated. Along with the PK evaluations of eurycomanone in mice and rats, the PK parameters for the Malaysian Standard (MS: 2409:201) standardised water extract of E. longifolia were also evaluated in rats. Both rodent models showed that eurycomanone in both the compound form and extract form had a half-life of 0.30 h. The differences in the bioavailability of eurycomanone in the compound form between the rats (11.8%) and mice (54.9%) suggests that the PK parameters cannot be directly extrapolated to humans. The results also suggest that eurycomanone is not readily absorbed across biological membranes. However, once absorbed, the compound is not easily metabolised (is stable), hence retaining its bioactive properties, which may be responsible for the various reported biological activities.
  19. Hambali IU, Bhutto KR, Jesse FFA, Lawan A, Odhah MN, Wahid AH, et al.
    Microb Pathog, 2018 Nov;124:101-105.
    PMID: 30114463 DOI: 10.1016/j.micpath.2018.08.017
    Mastitis is an inflammatory condition of the udder that occurs as a result of the release of leucocytes into the udder in a response to bacterial invasion. The major causes of mastitis are an array of gram positive and negative bacteria, however, algae, virus, fungi, mechanical or thermal injury to the gland have also been identified as possible causes. Mastitis vaccines are yet to be developed using Malaysian local isolate of bacteria. The objective of the present experimental trial was to develop a monovalent vaccine against mastitis using S. aureus of Malaysian isolate and to evaluate the clinical responses such as temperature, respiratory rates and heart rates in vaccinated cows. S. aureus is a major causative bacteria in clinical and subclinical types of mastitis in cows. Four concentrations of the bacterin (106, 107, 108 and 109 cfu/ml of the local isolate of S. aureus) were prepared using Aluminium potassium sulfate adjuvant. Thirty cows were grouped into four treatment groups (B, C, D and E) with a fifth group as control (A). These groups were vaccinated intramuscularly(IM) with the prepared monovalent vaccine and its influence on the vital signs were intermittently measured. The mean of rectal temperature was significantly different (p˂ 0.05) at 0hr Post Vaccination [1]" in groups D and E (39.5 ± 0.15 °C and 39.4 ± 0.15 °C respectively) and at 3 h PV in groups C, D and E (39.8 ± 0.14 °C, 39.9 ± 0.14 °C and 40.3 ± 0.14 °C respectively) compared to the control group. This indicated a sharp increased rectal temperatures between 0hr and 3 h PV in groups C, D and E which later declined at 24 h PV. The mean of rectal temperature of group E was significantly different (p˂ 0.05) at weeks 1 and 2 PV (39.87 ± 0.19 °C and 39.80 ± 0.18 °C respectively) compared to the control group. The mean of heart rate was significantly different (p˂ 0.05) at week 1 PV in groups D and E (83.0 ± 3.8 beats/minute and 80.0 ± 3.8 °C respectively) compared to control. A trending decrease was however observed in heart rates of group E from weeks through 4 PV and in group D from weeks 1 through 3 PV. The mean of respiratory rates was significantly different (p˂ 0.05) at week 3 PV in group B and D (31.0 ± 1.2 breaths/minute and 28.0 ± 1.2 breaths/minute) compared to control. In conclusion, this study highlights responses of these vital signs due to vaccination against S. aureus causing mastitis in cows. To the best of our knowledge the findings of this study adds value to the shallow literature on vital signs alterations in cows vaccinated against mastitis as elevated levels of temperature and heart rates of group D and E indicated obvious response.
  20. Binti Mohd Yusuf Yeo NA, Muthuraju S, Wong JH, Mohammed FR, Senik MH, Zhang J, et al.
    Brain Behav, 2018 09;8(9):e01093.
    PMID: 30105867 DOI: 10.1002/brb3.1093
    INTRODUCTION: Centella asiatica is an herbal plant that contains phytochemicals that are widely believed to have positive effects on cognitive function. The adolescent stage is a critical development period for the maturation of brain processes that encompass changes in physical and psychological systems. However, the effect of C. asiatica has not been extensively studied in adolescents. The aim of this study was therefore to investigate the effects of a C. asiatica extract on the enhancement of learning and memory in adolescent rats.

    METHODS: The locomotor activity, learning, and memory were assessed by using open field test and water T-maze test. This study also examined changes in neuronal cell morphology using cresyl violet and apoptosis staining. We also performed immunohistochemical study to analyse the expression of the glutamate AMPA receptor (α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid) GluA1 subunit and the GABA receptor (γ-Aminobutyric Acid) subtype GABAA α1 subunit in the hippocampus of the same animals.

    RESULTS: We found no significant changes in locomotor activity (p > 0.05). The water T-maze data showed that 30 mg/kg dose significantly (p  0.05). Histological data revealed no neuronal morphological changes. Immunohistochemical analysis revealed increased expression of the AMPA GluA1 receptor subunit but there was no effect on GABAA receptor α1 subunit expression in the CA1 and CA2 subregions of the hippocampus.

    CONCLUSIONS: The C. asiatica extract therefore improved hippocampus-dependent spatial learning and memory in a dose-dependent manner in rats through the GluA1-containing AMPA receptor in the CA1 and CA2 sub regions of the hippocampus.

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