Browse publications by year: 2026

  1. Ullah S, Zainol I, Jaafar CNA
    ACS Omega, 2026 Oct 20;11(41):62391-62401.
    PMID: 42923399 DOI: 10.1021/acsomega.5c10955
    The three-dimensional porous architecture of scaffolds strongly influences cell infiltration and cell-cell and cell-matrix interactions. The mechanical strength and biostability of three-dimensional (3D) porous scaffolds remain challenges for maintaining the 3D porous architecture and facilitating cell infiltration and cell-cell and cell-matrix interactions. In this study, the mechanical strength and biostability of chitosan-fish scale collagen 3D porous scaffolds were improved by using EDAC/NHS cross-linking in the presence of glycerin. Furthermore, the microstructure, physicochemical properties, mechanical strength, biostability, and cytocompatibility of the scaffolds were investigated. Chitosan-fish scale collagen/glycerin 3D porous scaffolds were fabricated via the EDAC/NHS cross-linking. Cross-linking effects on scaffold microstructures and physicochemical properties were investigated, while the scaffolds' mechanical strength and biostability were determined by using mechanical and biodegradation tests. Cytocompatibility tests were used to explore the ability of 3D porous scaffolds to be used for tissue engineering applications. The scaffolds' cross-linking density/degree, tensile modulus, and biostability were increased and pore size decreased with EDAC/NHS cross-linking treatment, resulting in enhanced mechanical strength and biostability of the 3D porous architecture of the scaffolds. The average tensile modulus of the cross-linking scaffold in a dry environment was in a range of 4.61 ± 2.33-0.62 ± 0.13 MPa, with a tensile modulus in a wet environment of 25.2 ± 6.32-17.74 ± 6.00 KPa, a biodegradation rate at day 30 of 28.73 ± 4.58-26.014 ± 1.70, and average pore sizes of 151.33 ± 53.66-142.31 ± 60.67 μm. In vitro culture of human fibroblasts and keratinocytes showed that the mechanical strength and biostability of cross-linking scaffolds supported cell proliferation, adhesion, spreading, and infiltration. It was found that the EDAC/NHS treatment improved the mechanical strength and biostability of the chitosan-fish scale collagen 3D porous architecture in the presence of glycerin and enhanced the cytocompatibility of scaffolds.
  2. Shao YY, Chen SC, Rau KM, Lee TY, Chan SL, Liu K, et al.
    Liver Cancer, 2026 Aug 12.
    PMID: 42923539 DOI: 10.1159/lic/admag004
    INTRODUCTION: Atezolizumab plus bevacizumab (Atezo-Bev) is a standard first-line systemic therapy for unresectable hepatocellular carcinoma (HCC). We aimed to explore the benefits of adding curative locoregional therapy (LRT) to patients who achieve a partial response (PR) to Atezo-Bev treatment.

    METHODS: This multinational retrospective study enrolled patients who received Atezo-Bev as first-line systemic therapy for unresectable HCC and reached complete response (CR) or PR. Patients were categorized into three cohorts: patients who underwent curative LRT after PR, patients with PR but did not receive curative LRT, and patients achieving CR without LRT. Curative LRT included surgery, ablation, and definitive radiotherapy with imaging evidence showing disease-free status afterward.

    RESULTS: A total of 243 patients were enrolled from 8 countries or regions; 31 patients received curative LRT after PR, 180 patients obtained PR but did not receive curative LRT, and 32 patients achieved CR without LRT. The curative-LRT group, compared with patients who did not receive curative LRT after PR, exhibited significantly longer PFS (median, 44.4 months vs. 18.2 months, p = 0.004) and overall survival (OS) (median, not reached vs. 34.3 months, p < 0.001). The differences remained significant after inverse probability of treatment weighting (IPTW) adjustment. By contrast, whether before or after IPTW adjustment, the curative-LRT group did not exhibit statistically significant difference in PFS, OS, and recurrence-free survival from patients who obtained CR without curative LRT.

    CONCLUSION: Curative LRT may consolidate the efficacy of Atezo-Bev in patients achieving a PR, potentially prolonging survival compared to systemic therapy alone.

  3. Lim CM, Mat Isa N, Omar AR, Choo WS
    Int J Microbiol, 2026;2026:4807321.
    PMID: 42923603 DOI: 10.1155/ijm/4807321
    Among the four influenza types, Influenza A virus (IAV) is responsible for annual epidemics and pandemics, causing the most severe illnesses, resulting in patient hospitalizations or death. With IAV threatening the next global influenza pandemic, it is a race against time to search for antiviral drugs. Betacyanins are reddish-violet, unique water-soluble nitrogen-containing pigments that have previously been reported to possess antiviral effects against IAV. The objectives of this study were to study interactions between betacyanins and key inflammatory markers, such as interleukin (IL)-1β, IL-6, tumor necrosis factor (TNF)-α, and suppressor of cytokine signaling 3 (SOCS3), in IAV-infected A549 cells. Betacyanins were first extracted from red pitahaya, quantified, and characterized. A549 cells were infected with IAV and then treated with betacyanins. Quantitative PCR was performed to study the change in expression levels of IL-1β, IL-6, TNF-α, and SOCS3. Molecular docking was performed to study any interactions between betacyanins and IL-1β, IL-6, TNF-α, SOCS3, and their respective receptors, namely, IL-1R1, IL-6R, and TNFR1. Betacyanins modulated IL-1β, IL-6, and TNF-α uniquely after up to 72 h. Specifically, both IL-1β and IL-6 were significantly downregulated after 48 and 72 h, and TNF-α was significantly downregulated after 48 h. Additionally, SOCS3, a host factor that IAV hijacks and induces to promote its own survival, was downregulated after 48 and 72 h. In silico analysis showed that betacyanins such as phyllocactin, hylocerenin, betanin, and isobetanin formed binding interactions and hydrogen bonds with IL-1β, IL-6, TNF-α, SOCS3, IL-1R1, IL-6R, and TNFR1. This study suggests that novel interactions between betacyanins and inflammatory cytokines might contribute to the antiviral effects of betacyanins, leading to the survival of the host cell. Future studies into the immunological aspects of the cell and overall cellular health are recommended.
  4. Nugraha AP, Hong G, Hariri F, Ardani IGAW, Pramusita A, Putranti NAR, et al.
    J Dent Sci, 2026;21(4):2127-2135.
    PMID: 42923653 DOI: 10.1016/j.jds.2025.07.3588
    BACKGROUND/PURPOSE: Maxillary expansion induced by mechanical force (MEMF) is a standard orthodontic approach for correcting transverse maxillary deficiency. The human umbilical cord mesenchymal stem cell secretome (HUCMSC-S) has the potential to stimulate accelerate bone remodeling. This study aimed to evaluate local HUCMSC-S application effect during MEMF on the expression bone morphogenetic protein (BMP)-2, BMP-4, BMP-7, vascular endothelial growth factor (VEGF), insulin-like growth factor-1 (IGF-1), transforming growth factor-beta (TGF-β), and fibroblast growth factor-2 (FGF-2) in a Wistar rat (Rattus norvegicus).

    MATERIALS AND METHODS: Twenty-four healthy male Wistar rats (R. norvegicus) were randomly divided into four groups: K1: blank, without treatment; K2: rats with an activated MEMF and PBS; P1: rats with an activated MEMF and HUCMSC-S; and P2: rats with an inactivated MEMF and HUCMSC-S. MEMF experimental animals was performed by applying a force of 0.42 N using a loop and observed for 28 days. The HUCMSC-S single dose was 2 x 106 cells (equivalent to 5 x 105 cells in 50 μl of aMEM) every two days application. After 28 days, the maxillary containing the midpalatal suture were harvested. Immunohistochemical analysis was performed to quantify the positive expression of BMP-2, BMP-4, BMP-7, VEGF, TGF-β, IGF-1 and FGF-2.

    RESULTS: HUCMSC-S local application during active expansion (Group P1) significantly upregulated the expression of BMP-2, BMP-4, BMP-7, VEGF, TGF-β, IGF-1, and FGF-2 in the midpalatal suture on day 28 compared to the control groups (P ≤ 0.05).

    CONCLUSION: HUCMSC-S local application effectively stimulates osteoblastogenesis and angiogenesis markers in the midpalatal suture during MEMF.

  5. Ramadhan R, Zahari A, Kurnia IT, Nguyen AK, Prasongsuk S, Firdaus YFH, et al.
    RSC Adv, 2026 Oct 22.
    PMID: 42923738 DOI: 10.1039/d6ra06497c
    In the search for potent bioactive compounds derived from medicinal plants, Garcinia parvifolia from East Kalimantan has demonstrated significant bioactivity consistent with established scientific criteria. Bioassay-guided isolation of the fruit extract resulted in two new depsidones named methyl garcidepsidone B (1) and parvifoliricodone A (6), two known analogues, a phloroglucinol, and a furfural derivative. Their structures were determined by spectroscopic techniques. The isolated compounds were subjected to assessments for their potential antidiabetic effects through an α-glucosidase inhibition assay, anti-tyrosinase activity, and antioxidant properties. Out of the isolated compounds, methyl garcidepsidone B (1) was the most potent inhibitor against α-glucosidase compared with acarbose as a positive standard. In the antioxidant assay, all isolated compounds showed significant free radical scavenging activity against ABTS, with the exception of compound 4. Regarding tyrosinase inhibitory activity, all isolated compounds exhibited low enzyme inhibition activity. Additionally, in silico molecular docking studies showed that compounds 1-3 exhibited favorable conformation and binding affinities within the enzymatic pockets of α-glucosidase. These findings indicate that the indigenous G. parvifolia fruit may serve as a natural source of antidiabetic, antioxidant, and anti-tyrosinase compounds, with potential for further pharmacological investigation.
  6. Thinzar M, Myint K, Heng B, Chow S, Guillemin GJ, Beh GC, et al.
    Dement Geriatr Cogn Dis Extra, 2026;16(1):108-118.
    PMID: 42923947 DOI: 10.1159/dee/acjag001
    INTRODUCTION: Mild cognitive impairment (MCI) is a high-risk prodromal state for Alzheimer's disease (AD). Its progression to AD is influenced by psychological distress, stress, anxiety, and depression, and kynurenine pathway (KP) dysregulation. Mindfulness-based interventions are proven to alleviate negative emotions; however, their impact on neuroinflammatory KP is unknown. This study determined the impact of short-term mindful awareness practice (MAP) on the serum KP profile and its associated modifiable risk factors for slow disease progression in MCI individuals.

    METHODS: This was a 21-day pilot randomized controlled trial. Patients with MCI (Montreal Cognitive Assessment score: 18-25) were randomized to a MAP group (n = 17, 66.7 ± 6.6 years) receiving 30 min of daily guided practice, or a control group (n = 19, 69.2 ± 8.7 years) receiving familiar support. Serum kynurenines and inflammatory markers were measured at baseline (day 0) and post-intervention (day 21).

    RESULTS: The MAP group showed significant decreases in serum tryptophan (p < 0.05) and kynurenine (p < 0.01), with an increase in pro-inflammatory interferon-gamma (p < 0.05). No significant changes were found for negative emotions, cortisol, or other kynurenines, including neuroprotective picolinic acid, neurotoxic 3-hydroxykynurenine, and quinolinic acid. Concurrently, the control group demonstrated similar changes, with significant changes in cortisol (p < 0.01).

    CONCLUSIONS: This pilot study highlights a complex relationship between short-term MAP, the KP, and the immune system in MCI. The findings suggest a need for longer durations or higher intensities of practice in the MCI cohort. Future longitudinal research with a larger sample size is strongly recommended to validate these preliminary results.

  7. Zahra F, Hashmi AR, Ravi RN, Sekar M, Wong LS, Jaganathan R, et al.
    PMID: 42923958 DOI: 10.1016/j.crphar.2026.100261
    Mucoadhesive drug delivery systems (MDDS) have emerged as an important strategy in modern pharmacology to enhance drug residence time, improve mucosal absorption, and optimize therapeutic performance across diverse administration routes. By enabling intimate and prolonged interactions with mucosal tissues, MDDS directly influence pharmacokinetic and pharmacodynamic outcomes while supporting patient-centric, non-invasive drug delivery. Recent advances in polymer engineering, surface functionalization, and formulation design have further expanded the capability of MDDS to overcome biological barriers and address key limitations associated with conventional dosage forms. This review provides a comprehensive and mechanistically driven analysis of MDDS, focusing on the fundamental principles of mucoadhesion and the physicochemical and biological factors governing adhesive strength, mucus penetration, and controlled drug release. A wide range of mucoadhesive delivery platforms, including films, gels, tablets, patches, hydrogels, and particulate systems, are discussed in relation to their structure-property-function relationships and pharmacological performance across oral, nasal, ocular, gastrointestinal, vaginal, rectal, and pulmonary routes. The role of natural, semi-synthetic, and synthetic polymers, together with advanced functionalization strategies such as thiolation, ligand incorporation, stimuli-responsive networks, and nanotechnology integration, is critically evaluated with respect to enhancing adhesion, permeability, and therapeutic efficacy. Beyond formulation design, the review emphasizes translational and drug discovery-relevant considerations, including Quality by Design (QbD), manufacturing scalability, regulatory and safety expectations, and clinically evaluated and Food and Drug Administration-approved mucoadhesive products. Selected clinical trials and case studies of successful and unsuccessful formulations are examined to highlight key challenges in clinical translation and to identify emerging opportunities. By bridging mechanistic understanding with applied pharmacology and translational development, this review positions MDDS as a versatile and clinically viable platform for advancing next-generation drug delivery strategies and accelerating their progression from discovery to patient care.
  8. Qi-Hua C, Abdul Hamid ZA, Ku Ishak KM, Bustami Y
    ACS Omega, 2026 Oct 20;11(41):63353-63380.
    PMID: 42923989 DOI: 10.1021/acsomega.6c06914
    Thermochromic polymers have had significant development over the years through consistent research. Specifically, polymers that involve an embedded ternary thermochromic compound, which consists of a dye, color developer, and cosolvent, have garnered a lot of attention for the tunability of their color-changing properties. These compounds exhibit color changes through the mechanism of proton transfer between the dye and developer species, and the presence of a solvent is crucial to facilitating this phenomenon. By manipulating the type of each component within the dye-developer-solvent (DDS) compound, the color, direction of color change, and phase transition temperature can be adjusted. The fabrication of thermochromic polymers with DDS compounds can be done through encapsulation, impregnation into a porous material, coating, or a combination of encapsulation and compounding with a polymer matrix. Potential applications of temperature-sensitive polymers include temperature sensors and heat regulators in packaging, clothing, medical devices, and architecture. Research efforts are being continuously made on DDS compounds to make them safer and more eco-friendly with the replacement of conventional components with biobased materials. This review provides a comprehensive overview of the working principle of ternary thermochromic DDS compounds, the tunability of the thermochromic properties, the current progress of research on utilizing DDS compounds in polymers, and the prospects in developing nontoxic thermochromic polymers for food packaging and medical applications.
  9. Douhi S, El Achaby M, Zakaria Z, Al-Gburi AJA, Eddiai A
    ACS Omega, 2026 Oct 20;11(41):63151-63169.
    PMID: 42924129 DOI: 10.1021/acsomega.6c06181
    Flexible textile-based electronic systems are emerging as promising candidates for next-generation wearable technologies due to their mechanical compliance, lightweight nature, and seamless integration into garments. In this work, a metamaterial-inspired dual-band flexible textile antenna based on a wool-felt substrate is presented for body-centric wireless applications. The proposed device is designed as a flexible electronic structure integrating coplanar waveguide (CPW) feeding with symmetric square-ring resonators to enable compact size and dual-band electromagnetic functionality. The wool-felt substrate serves as a functional textile material offering low density, high flexibility, and stable dielectric behavior under mechanical deformation. The fabricated structure exhibits an overall dimension of 40 × 52 mm2, making it suitable for garment-integrated electronic systems. Experimental results demonstrate two impedance bandwidths of 3.11-3.70 GHz and 5.52-6.89 GHz (|S 11| < -10 dB), covering sub-6 GHz 5G and ISM wireless communication bands. The proposed flexible electronic system achieves measured gains of 1.81 dBi and 4.35 dBi at the lower and upper frequency bands, respectively, with good agreement between simulated and experimental results. Mechanical bending analysis confirms stable electromagnetic performance, with resonance shifts below 1%, indicating robust mechanical-electromagnetic coupling under deformation. Furthermore, specific absorption rate (SAR) analysis verifies compliance with international safety standards for on-body wireless operation. Owing to its combination of a functional textile substrate, compact architecture, and stable dual-band performance, the proposed wool-felt-based flexible antenna represents a promising candidate for wearable and body-centric electronic systems.
  10. Huang D, Huang D, Shi P, Zhang P, Wahab MNA, Wang Z, et al.
    Front Psychol, 2026;17:1927911.
    PMID: 42924189 DOI: 10.3389/fpsyg.2026.1927911
    This study aims to explore the relationships among university students' volleyball experience, executive functions, and mental rotation ability, and to elucidate the underlying mechanisms. Using a cross-sectional design, 60 university students were categorized into high (HVEG), medium (MVEG), and low (LVEG) volleyball experience groups, and their mental rotation ability and executive functions were assessed. Multiple linear regression was conducted, structural equation modeling was performed with Mplus 8.3, and mediation effects were tested using 5,000 bootstrap samples. Results showed that significant differences among the three groups in executive function and mental rotation ability (p 
  11. Binti Mahno NE, Siew Pien L, Binti Mohd Mokhtar HH, Amer H, Al Amri RB
    Cureus, 2026 Sep;18(9):e116737.
    PMID: 42924360 DOI: 10.7759/cureus.116737
    Background and objective Various support system interventions have demonstrated efficacy in enhancing self-care management among patients with heart failure (HF) through a comprehensive understanding derived from diverse perspectives involving patients, caregivers, and healthcare providers (HCPs) in self-care practices. The objective of this study was to explore the self-care management needs of patients with HF and how caregivers and HCPs support these needs. Methods A qualitative approach was used to examine patients' experiences with HF. Purposive sampling was used to recruit 24 patients from a Saudi tertiary center between May 2024 and May 2025. Data collection involved semi-structured, face-to-face interviews about their understanding, practices, and challenges. The interviews were recorded, transcribed, and analyzed thematically. Results The findings highlight the importance of support systems as a foundation for self-care management among patients with HF. Participants with HF reported that their spouses were their primary caregivers. Most were satisfied with the care and communication provided by HCPs. Many did not exercise because of their condition. Most reported that HF-related costs were covered by the government, with some receiving financial aid. Others relied on family and relatives for support. Conclusions Support systems serve as a vital foundation for self-care management among patients with HF. Family caregivers, HCPs, and institutional resources all play crucial roles in ensuring comprehensive self-care management for patients with HF. Social media, newspapers, education initiatives, and free health screenings serve a significant role in raising public awareness and understanding of risk factors that predict HF.
  12. Bhat AA, Fuloria S, Thapa R, Varghese N, Karunakaran R, Bhatia S, et al.
    Anal Methods, 2026 Oct 23.
    PMID: 42924527 DOI: 10.1039/d6ay01715k
    Biosensors based on chemiluminescence (CL) and electrochemiluminescence (ECL) have demonstrated high sensitivity for the detection of cancer biomarkers, including proteins, nucleic acids, extracellular vesicles, exosomes, intact tumor cells, and circulating tumor cells. CL and ECL provide low optical background and compatibility with enzymatic, nucleic-acid, nanomaterial-based, and nanozyme-mediated amplification strategies, while ECL additionally enables electrochemically controlled signal generation and compatibility with miniaturized electrode formats. This review critically examines how CL and ECL sensing principles, recognition and amplification strategies, nanomaterial-assisted architectures, and multiplexed formats are applied across major liquid-biopsy analyte classes, including proteins, nucleic acids, extracellular vesicles and exosomal cargo, intact tumor cells, and circulating tumor cells, and evaluates the analytical trade-offs that influence their clinical translation. Special attention is given to analytical performance parameters, including the limit of detection, linear range, recovery, selectivity, reproducibility, and storage stability, and comparisons with enzyme-linked immunosorbent assay (ELISA), automated immunoassays, quantitative PCR, digital PCR (dPCR), and sequencing. The reported detection limits of many experimental platforms reach femtomolar or even attomolar concentrations; however, the data are often obtained from buffer solutions, spiked specimens, or small, single-center cohorts and are therefore difficult to compare because of differences in the target, matrix, amplification scheme, and calibration procedure. Complex fabrication, limited standardization, insufficient interference testing, the absence of traceable calibrators, variable pre-analytical workflows, and the absence of external validation of diagnostic decision thresholds also limit clinical translation. Automated sample-to-result CL/ECL systems, harmonized reference materials, prospective multicenter validation, and evidence that improved analytical sensitivity translates into clinically meaningful benefits in cancer detection, diagnosis, monitoring, and/or treatment selection are required for future progress.
  13. Benjamin MM, Choo YM, Dickinson CF, Tius MA, Ferreira D, Hamann MT
    J Nat Prod, 2026 Oct 23;89(10):2751-2763.
    PMID: 42924965 DOI: 10.1021/acs.jnatprod.6c00532
    Phenols, natural and semisynthetic compounds in which a hydroxylated or oxygenated aromatic scaffold is a defining structural feature, occupy a paradoxical position in drug discovery. On the one hand, these compounds are frequently scrutinized for triggering Pan-Assay INterference compoundS (PAINS) structural alerts; on the other, their reported wide-ranging bioactivities support continued evaluation as potential therapeutics, particularly given that several phenolic compounds and mixtures have attained FDA approval for treating diseases ranging from cancers to viral infections. Accordingly, this perspective contrasts concerns raised by PAINS structural alerts with reported broad pharmacological activity and proposes a framework for the rational evaluation as well as the synthetic development of phenolic scaffolds.
    MeSH terms: Animals; Biological Products/pharmacology; Biological Products/chemistry; Chronic Disease/drug therapy; Humans; Molecular Structure; Drug Discovery; Polypharmacology*
  14. Pourshahrokhi N, Farokhzadian J, Hunter MS, Azaraeen S, Ahmadian L
    Health Expect, 2026 Oct;29(5).
    PMID: 42925072 DOI: 10.1111/hex.70938
    BACKGROUND: Menopause is a major life transition that can affect women's physical, psychological, cognitive, sexual and social well-being. Despite the availability of evidence-based interventions, many women remain insufficiently informed and experience difficulties accessing reliable information and appropriate support.

    OBJECTIVES: To explore menopause-related information needs and challenges from the perspectives of menopausal women and healthcare professionals and to identify individual, healthcare-related and societal factors influencing menopause literacy.

    DESIGN: A qualitative study informed by a constructivist paradigm was conducted using semi-structured interviews and conventional qualitative content analysis.

    METHODS: Twenty-two peri- and postmenopausal women and 10 healthcare professionals were purposively recruited from healthcare settings in Southern Iran. Data were collected until data saturation was achieved, defined as the point at which no new codes or categories emerged from successive interviews. Interview transcripts were analysed using conventional qualitative content analysis following the approach of Graneheim and Lundman. Trustworthiness was enhanced through prolonged engagement, member checking, peer debriefing and established criteria for qualitative research.

    RESULTS: Three interrelated themes were identified: understanding and accepting menopause, menopause management, and challenges of transition. Women described menopause as an unexpected and multidimensional transition affecting physical, psychological, cognitive, sexual, social and occupational well-being. Both women and healthcare professionals identified substantial gaps in menopause literacy and emphasised the need for timely education, evidence-based information and supportive healthcare. Symptom management strategies, lifestyle modification, family and peer support, and access to reliable information were perceived as important facilitators, whereas limited awareness, menopause-related stigma, insufficient provider engagement and difficulty identifying trustworthy information were reported as major barriers.

    CONCLUSIONS: Menopause literacy is shaped by interacting individual, healthcare and societal factors. Strengthening evidence-based menopause education, improving healthcare support and developing accessible, person-centred information resources may enhance women's ability to navigate the menopausal transition and inform the design of future educational and digital health interventions.

    MeSH terms: Adult; Female; Humans; Interviews as Topic; Iran; Health Knowledge, Attitudes, Practice; Middle Aged; Qualitative Research; Health Literacy*
  15. Low SW, Lohanadan K, Mat Lazim N
    Trop Doct, 2026 Oct 24.
    PMID: 42925282 DOI: 10.1177/00494755261499016
    Tracheostomal myiasis is an uncommon parasitic infestation with potential airway compromise. We emphasise an airway-first approach, cautious use of volatile agents near a tracheostomy and meticulous stoma care.
  16. Mallya L, Roma M, Shetty K, Nallani S, Nayak V, Ravi R
    Ann Afr Med, 2026 Oct 23.
    PMID: 42925285 DOI: 10.4103/aam.aam_765_26
    The dental pulp and periodontium are intimately connected through anatomical structures such as the apical foramen, lateral and accessory canals, and dentinal tubules, creating pathways for the bidirectional spread of infection and inflammation. This close relationship can result in endodontic-periodontal lesions, which often present significant diagnostic and therapeutic challenges due to overlapping clinical and radiographic features. This review aims to examine the etiopathogenesis, classification, diagnostic considerations, and contemporary management approaches for endodontic-periodontal lesions. A narrative review of classical and current literature was conducted, focusing on the anatomical and biological interrelationship between pulpal and periodontal tissues, microbial interactions, disease progression, and evidence-based treatment protocols. The reviewed literature indicates that endodontic infections commonly produce secondary periodontal manifestations through the dissemination of microorganisms and their by-products along established anatomical pathways, while advanced periodontal disease may, under certain circumstances, adversely affect pulpal health. Accurate diagnosis requires a comprehensive assessment incorporating pulp vitality testing, periodontal examination, probing patterns, radiographic evaluation, and correlation of clinical findings. Successful treatment outcomes depend on correctly identifying the primary source of infection and implementing an appropriate treatment sequence. In most cases, endodontic therapy should be initiated before periodontal intervention to facilitate healing, permit reassessment of periodontal status, and guide the need for additional periodontal treatment. A thorough understanding of the endodontic-periodontal relationship remains essential for predictable diagnosis, treatment planning, and long-term prognosis.
  17. Abdulrazak MH, Hasan H, Hassan SA, Bakar RA, Peng TS, Ismail N
    J Appl Microbiol, 2026 Oct 24.
    PMID: 42925418 DOI: 10.1093/jambio/lxag255
    AIMS: Biofilm formation by multidrug-resistant (MDR) Gram-negative pathogens on endotracheal tubes is a major challenge in ventilator-associated pneumonia (VAP), necessitating novel antibiofilm agents. This study evaluated the activity of Salvadora persica hexane extract (SPHE) against clinical MDR isolates of Klebsiella pneumoniae, Pseudomonas aeruginosa, and Acinetobacter baumannii relevant to VAP.

    METHODS AND RESULTS: Biofilm-forming capacity was assessed using crystal violet (CV) assays. SPHE was evaluated at sub-inhibitory and MIC concentrations to assess biofilm inhibition and the reduction of preformed biofilm. Structural changes were analysed via scanning electron microscopy (SEM) with quantitative image analysis. Expression of adhesins FimH (K. pneumoniae) and OmpA (A. baumannii) was assessed by Western blot, while cytocompatibility was tested in WRL-68 hepatocytes and dental pulp stem cells (DPSCs) via MTT assays. SPHE demonstrated stage-dependent activity. At sub-inhibitory concentrations, early biofilm formation was inhibited by 88% in P. aeruginosa and 74% in K. pneumoniae. For mature biofilms, the greatest reduction (78% biomass) occurred in A. baumannii. SEM revealed significant architectural disruption, with surface coverage reduced by up to 56% (p = 0.002). Cell viability remained > 90% in both cell lines at all tested concentrations.

    CONCLUSIONS: SPHE exhibits species- and developmental-stage-dependent antibiofilm activity against tested MDR Gram-negative pathogens associated with VAP and induces substantial disruption of biofilm architecture. Together with preliminary cytocompatibility findings within the tested concentration range, these results support further investigation of SPHE as a potential antibiofilm candidate to limit biofilm-associated colonisation in mechanically ventilated patients.

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