21,244 results match your criteria: "Chulalongkorn University; chenphop@gmail.com.[Affiliation]"

Epidemiological models to estimate the burden of snakebite envenoming: A systematic review.

Trop Med Int Health

January 2025

Department of Social and Administrative Pharmacy, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand.

Background: Epidemiological modelling studies in snakebite envenoming research are evolving. Their techniques can be essential in filling the knowledge gap needed to attain the World Health Organization's (WHO) goal of halving the burden of snakebite envenoming by complementing the current data scarcity. Hence, there is a need for a systematic review to summarise epidemiological models used in estimating the burden of snakebite envenoming.

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Article Synopsis
  • Endoscopic-assisted breast surgery (EABS) offers better cosmetic results for breast cancer patients, but traditional axillary lymph node dissection (ALND) requires larger incisions and more retraction.
  • The proposed single-port three-dimensional endoscopic-assisted ALND (S-P 3D E-ALND) uses a minimally invasive technique with high success rates and improved visualization, analyzed from a study of 11 patients.
  • Preliminary results show 100% success without open surgery conversion, short operative times, minimal blood loss, and no significant complications over a median follow-up of 7 months, suggesting that S-P 3D E-ALND is a viable alternative for ALND.
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Perceptions of dental professionals on the use of silver diamine fluoride with or without light-curing.

BMC Oral Health

December 2024

Department of Community Dentistry, Faculty of Dentistry, Chulalongkorn University, 34 Henri-Dunant rd., Wangmai, Pathumwan, Bangkok, 10330, Bangkok, Thailand.

Background: According to anecdotal reports, SDF's ability to arrest caries can be enhanced by light-curing in a clinical setting. The purpose of the present study was to explore the dental professionals' perceptions of using SDF and to understand the barriers and enabling factors to using SDF with and without light-curing.

Methods: A qualitative study was conducted with dental professionals who had experience with using SDF with and without light-curing.

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Metataxonomics study of dental bioaerosols affected by waterline disinfection.

BMC Oral Health

December 2024

Center of Excellence on Oral Microbiology and Immunology, Department of Microbiology, Faculty of Dentistry, Chulalongkorn University, Henri Dunant Rd, Bangkok, 10330, Thailand.

Background: Microorganisms in dental unit water (DUW) play a significant role in dental bioaerosols. If the methods used to decontaminate DUW also help improve air quality in dental clinics is worth exploring. In this study, we aim to identify the source of bacteria in dental bioaerosols and investigate the impact of waterline disinfectants on the quantity and composition of bacteria in DUW and bioaerosols.

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Dynamics of immune responses following duck Tembusu virus infection in adult laying ducks reveal the effect of age-related immune variation on disease severity.

Poult Sci

December 2024

Department of Veterinary Microbiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand, 10330; Center of Excellence for Emerging and Re-emerging Infectious Diseases in Animals (CUEIDAs), Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand, 10330; Center of Excellence in Animal Vector-Borne Diseases, Veterinary Parasitology Unit, Department of Veterinary Pathology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand, 10330; Center of Excellence of Systems Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand, 10330. Electronic address:

Duck Tembusu virus (DTMUV), an emerging avian pathogenic flavivirus, is notably associated with neurological disorders and acute egg drop syndrome in ducks. We previously demonstrated that the susceptibility of ducks to DTMUV infection varies significantly with age, with younger ducks (4-week-old) exhibiting more severe disease than older ducks (27-week-old). However, the immunological mechanisms underlying these age-related differences in disease severity remain unclear.

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This paper seeks to enhance the performance of Mel Frequency Cepstral Coefficients (MFCCs) for detecting abnormal heart sounds. Heart sounds are first pre-processed to remove noise and then segmented into S1, systole, S2, and diastole intervals, with thirteen MFCCs estimated from each segment, yielding 52 MFCCs per beat. Finally, MFCCs are used for heart sound classification.

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Prevalence of burnout and its determinants among Indonesian nurses: a multicentre study.

Sci Rep

December 2024

Faculty of Nursing, Chulalongkorn University, Borommaratchachonnani Srisataphat, Building, Rama 1 Road, Pathumwan, 10330, Bangkok, Thailand.

Frontline health workers face a significant issue concerning mental health, particularly stress and burnout. Nurses, being among them, grapple with this problem. The study aims to investigate the prevalence and determinants of burnout among nurses.

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Background: Subcutaneous emicizumab, a factor VIII (FVIII)-mimicking bispecific monoclonal antibody, can effectively prevent bleeds in haemophilia A (HA) patients with/without inhibitors; however, its standard-dose regimens are financially burdensome. Low-dose emicizumab prophylaxis may alternatively be applied to noninhibitor HA patients in resource-limited settings.

Methods: During 2023, Thai patients with noninhibitor severe HA or moderate HA with severe bleeding phenotype (historical annualized bleeding rate [ABR] >5 bleeds/year before regular FVIII prophylaxis) who received low-/intermediate-dose FVIII secondary prophylaxis ≥8 months were enrolled.

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Background: Major depression is classified into distinct subtypes: simple (SDMD) and major dysmood disorder (MDMD). MDMD patients exhibit elevated atherogenicity and decreased reverse cholesterol transport (RCT). However, comprehensive data regarding lipid metabolism is absent in first episode (FE)-SDMD.

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Background: The selection guideline for the implant-supported bar connectors (ISBC) of hybrid denture is lacking. This study investigated the maximum von Mises stress (vMS), stress distribution, and displacement of various geometric ISBC in mandibular hybrid dentures, as well as the maximum principal stress (σmax) in the acrylic resin part, through finite element analysis.

Methods: Four different geometric cross-sectional patterns for mandibular ISBC-L, Y, I, and Square-of equal volume, based on the "All-on-4" concept, were created.

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This study examined differences in quit attempts, 1-month quit success, and vaping status at follow-up among a cohort of 3709 daily smokers with and without depression, anxiety, and regular alcohol use who participated in both the 2018 and 2020 International Tobacco Control Four Country Smoking and Vaping (ITC 4CV) Surveys. At baseline, a survey with validated screening tools was used to classify respondents as having no, or one or more of the following: 1) depression, 2) anxiety, and 3) regular alcohol use. Multivariable adjusted regression analyses were used to examine whether baseline (2018) self-report conditions were associated with quit attempts; quit success; and vaping status by follow-up (2020).

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Background: Developing an optimal media for Vero cell lines is crucial as it directly influences cell survival, proliferation, and virus production. The use of serum in cell culture raises safety concerns in biological production. The United States Food and Drug Administration (FDA) and the European Medicines Agency have implemented stricter regulations on the use of animal-derived components in commercial protein manufacturing to ensure patient safety.

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Purpose: Transgender medicine has become rapidly recognized and evolving in the health care system. The consequences of hormone therapy are among the most concerning health issues in the transgender population. This study aims to compare bone turnover markers before and after testosterone administration in hormone-naive transgender men.

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Objective: This study aimed to identify upregulated genes in HPV16-positive cervical cancer cells and investigate the impact of downregulating NAD(P) H:quinone oxidoreductase 1 (NQO1) on the survival of these cells.

Methods: Transcriptomic sequencing (RNA-seq) was utilized to pinpoint upregulated genes and associated cancer-related pathways in HPV16-positive cervical cancer cells, comparing them to HPV-negative cervical cancer cells. NQO1 gene knockdown was performed in HPV16-positive cervical cancer cell lines to assess its effect on cell survival, including parameters such as cell proliferation, migration, invasion, cell cycle progression, apoptosis, and the expression of key proteins in the PI3K/AKT pathway, p53, and RECK.

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Vector-borne diseases pose a major worldwide health concern, impacting more than 1 billion people globally. Among various blood-feeding arthropods, mosquitoes stand out as the primary carriers of diseases significant in both medical and veterinary fields. Hence, comprehending their distinct role fulfilled by different mosquito types is crucial for efficiently addressing and enhancing control measures against mosquito-transmitted diseases.

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Wnt signaling is a critical pathway implicated in cancer development, with Frizzled proteins, particularly FZD10, playing key roles in tumorigenesis and recurrence. This study focuses on the potential of repurposed FDA-approved drugs targeting FZD10 as a therapeutic strategy for nasopharyngeal carcinoma (NPC). The tertiary structure of human FZD10 was constructed using homology modeling, validated by Ramachandran plot and ProQ analysis.

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Comprehension of acoustically degraded emotional prosody in Alzheimer's disease and primary progressive aphasia.

Sci Rep

December 2024

Dementia Research Centre, Department of Neurodegenerative Disease, UCL Queen Square Institute of Neurology, University College London, 1st Floor, 8-11 Queen Square, London, WC1N 3AR, UK.

Previous research suggests that emotional prosody perception is impaired in neurodegenerative diseases like Alzheimer's disease (AD) and primary progressive aphasia (PPA). However, no previous research has investigated emotional prosody perception in these diseases under non-ideal listening conditions. We recruited 18 patients with AD, and 31 with PPA (nine logopenic (lvPPA); 11 nonfluent/agrammatic (nfvPPA) and 11 semantic (svPPA)), together with 24 healthy age-matched individuals.

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Non-catalytic glycerol dehydrogenation to dihydroxyacetone using needle-in-tube dielectric barrier discharge plasma.

Sci Rep

December 2024

Center of Excellence in Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand.

Glycerol, a by-product of biodiesel production, could be converted into various value-added products. This work focuses on its dehydrogenation to dihydroxyacetone (DHA), which is mainly used in the cosmetics industry. While several methods have been employed for DHA production, some necessitate catalysts and involve harsh reaction conditions as well as long reaction times.

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Microsatellites, or simple sequence repeats (SSRs), are short tandemly repeated DNA sequences widely dispersed throughout the genome. Their high variability, co-dominant inheritance, and ease of detection make them valuable genetic markers, frequently used to study genetic diversity, population structure, and evolutionary processes. In the context of malaria research, particularly with Plasmodium falciparum (P.

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Background: Severe or recurring major depression is associated with increased adverse childhood experiences (ACEs), heightened atherogenicity, and immune-linked neurotoxicity (INT). Nevertheless, the interconnections among these variables in outpatient major depression (OMDD) have yet to be determined. We aim to determine the correlations among INT, atherogenicity, and ACEs in OMDD patients compared to normal controls.

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The preparation of 3D-printed self-healing hydrogels composed of carboxymethyl chitosan and oxidized dextran via stereolithography for biomedical applications.

Int J Biol Macromol

December 2024

National Science and Technology Development Agency (NSTDA), 111 Thailand Science Park, Phahonyothin Road, Klong Luang, Pathum Thani 12120, Thailand.

This study presents a new approach for fabricating 3D-printed self-healing hydrogels via light-assisted 3D printing, utilizing Schiff-base and covalent bonding formations resulting from the reaction between amine and aldehyde functional groups alongside the photopolymerization of methacrylate groups. Two distinct polymers, carboxymethyl chitosan (CMCs) and dextran, were first modified to yield methacrylate-modified carboxymethyl chitosan (CMCs-MA) and oxidized dextran (OD). The structural modifications of these polymers were confirmed using spectroscopic techniques, including H NMR and FTIR analyses.

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Bee pollen peptides as potent tyrosinase inhibitors with anti-melanogenesis effects in murine b16f10 melanoma cells and zebrafish embryos.

Sci Rep

December 2024

Center of Excellence in Bioconversion and Bioseparation for Platform Chemical Production, Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand.

One important functional food ingredient today, valued for its health properties and ability to prevent disease, is bee pollen, which comprises a combination of nectar, pollen from plants, and the secretions of bees. In this research, the tyrosinase (TYR) inhibiting abilities of the peptides derived from bee pollen protein hydrolysates are investigated. Various proteases were utilized to generate these peptides, followed by testing at different concentrations.

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Inter-individual variability in drug responses is significantly influenced by genetic factors, underscoring the importance of population-specific pharmacogenomic studies to optimize clinical outcomes. In this study, we analyzed whole genome sequencing data from 949 unrelated Thai individuals and conducted an in-depth analysis of 3239 genes involved in drug pharmacokinetics, pharmacodynamics, or immune-mediated adverse drug reactions. We identified 43 single nucleotide polymorphisms (SNPs), 134 diplotypes, and 15 human leukocyte antigen (HLA) alleles, all with moderate to high clinical significance.

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Effect of Mechanical Force Stress on the Inflammatory Response in Human Periodontal Ligament Cells.

Int Dent J

December 2024

Center of Excellence for Dental Stem Cell Biology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand; Faculty of Dentistry, Department of Anatomy, Chulalongkorn University, Bangkok, Thailand.

Human periodontal ligament (hPDL) is continuously exposed to mechanical forces that can induce inflammatory responses in resident stem cells (hPDLSCs). Here, we review the impact of mechanical force on hPDLSCs, focusing on the activation of inflammatory cytokines and related signalling pathways, which subsequently influence periodontal tissue remodelling. The effects of various mechanical forces, including compressive, shear, and tensile forces, on hPDLSCs are discussed.

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Ligand docking in the sigma-1 receptor compared to the sigma-1 receptor-BiP complex and the effects of agonists and antagonists on C. elegans lifespans.

Biomed Pharmacother

January 2025

Center of Excellence on Natural Products for Neuroprotection and Anti-Ageing, Chulalongkorn University, Bangkok 10330, Thailand; Research, Innovation and International Affairs, Faculty of Allied Health Sciences, Chulalongkorn University, Bangkok, Thailand. Electronic address:

Model organisms are commonly used to study human diseases; we set out to understand the relevance of several model organisms with relation to the σ1R protein. The study explored the interactions of σ1R with various agonists, antagonists across different species. Ligand and protein-protein (σ1R-BiP) docking approaches were used to understand the significance of σ1R in modulating neuroprotective mechanisms and its potential role in Alzheimer's.

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