21,238 results match your criteria: "Chulalongkorn University; chenphop@gmail.com.[Affiliation]"

Historically, plant derived natural products and their crude extracts have been used to treat a wide range of ailments across the world. Biogerontology research aims to explore the molecular basis of aging and discover new anti-aging therapeutic compounds or formulations to combat the detrimental effects of aging and promote a healthy life span. The budding yeast has been, and continues to be, an indispensable model organism in the field of biomedical research for discovering the molecular basis of aging has preserved nutritional signaling pathways (such as the target of rapamycin (TOR)-Sch9 and the Ras-AC-PKA (cAMP-dependent protein kinase) pathways, and shows two distinct aging paradigms chronological life span (CLS) and replicative life span (RLS).

View Article and Find Full Text PDF

Background: Axillary lymph node metastasis (ALNM) is a significant predictor of overall patient survival; thus, precise evaluation of ALNM is essential for staging breast cancer, informing multimodal treatment strategies, and ensuring optimal patient care. This study aimed to establish a magnetic resonance imaging (MRI) scoring system for predicting extensive axillary nodal metastasis in patients with clinically node-negative breast cancer derived from preoperative breast and axillary MRI.

Methods: This study included 226 patients with clinically node-negative breast cancer who underwent preoperative breast and axillary MRI between January 1, 2010 and December 31, 2020 at King Chulalongkorn Memorial Hospital.

View Article and Find Full Text PDF

Eligibility Criteria of Randomized Clinical Trials in Critical Care Medicine.

JAMA Netw Open

January 2025

Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, Ontario, Canada.

Importance: Eligibility criteria for randomized clinical trials (RCTs) are designed to select clinically relevant patient populations. However, not all eligibility criteria are strongly justified, potentially excluding marginalized groups, and limiting the generalizability of trial findings.

Objective: To summarize and evaluate the justification of exclusion criteria in published RCTs in critical care medicine.

View Article and Find Full Text PDF

Although long-term high dietary sodium consumption often aggravates hypertension and bone loss, sodium in the intestinal lumen has been known to promote absorption of nutrients and other ions, e.g., glucose and calcium.

View Article and Find Full Text PDF

Background: In patients with acute hypoxemic respiratory failure (AHRF) under mechanical ventilation, the change in pressure slope during a low-flow insufflation indicates a global airway opening pressure (AOP) needed to reopen closed airways and may be used for titration of positive end-expiratory pressure.

Objectives: To understand 1) if airways open homogeneously inside the lungs or significant regional AOP variations exist; 2) whether the pattern of the pressure slope change during low-flow insufflation can indicate the presence of regional AOP variations.

Methods: Using electrical impedance tomography, we recorded low-flow insufflation maneuvers (< 10 L/min) starting from end-expiratory positive pressure 0-5 cmHO.

View Article and Find Full Text PDF

Recurrent neural networks (RNNs) based on model neurons that communicate via continuous signals have been widely used to study how cortical neural circuits perform cognitive tasks. Training such networks to perform tasks that require information maintenance over a brief period (i.e.

View Article and Find Full Text PDF

Decoding the blueprint of receptor binding by filoviruses through large-scale binding assays and machine learning.

Cell Host Microbe

January 2025

Department of Pathology, Microbiology, and Immunology, School of Veterinary Medicine, University of California, Davis, CA 95616, USA. Electronic address:

Evidence suggests that bats are important hosts of filoviruses, yet the specific species involved remain largely unidentified. Niemann-Pick C1 (NPC1) is an essential entry receptor, with amino acid variations influencing viral susceptibility and species-specific tropism. Herein, we conducted combinatorial binding studies with seven filovirus glycoproteins (GPs) and NPC1 orthologs from 81 bat species.

View Article and Find Full Text PDF

Background: Hepatocellular carcinoma (HCC) is a significant health problem associated with several risk factors, increasingly driven by non-alcoholic steatohepatitis and metabolic syndrome. This association poses a challenge for the primary treatments of HCC, which may include immune checkpoint inhibitors and vascular endothelial growth factor inhibitors, due to their potential cardiotoxic effect. Therefore, it is imperative to balance the therapeutic effects of these agents with their potential cardiovascular adverse events.

View Article and Find Full Text PDF

Micelle-enabled bromination of α-oxo ketene dithioacetals: mild and scalable approach enzymatic catalysis.

Org Biomol Chem

January 2025

Nanotec-CU Center of Excellence on Food and Agriculture, Department of Chemistry, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.

The bromination of α-oxo ketene dithioacetals using KBr/HO, catalyzed by vanadium chloroperoxidase (VCPO), has been successfully demonstrated. A comparative study of enzymatic processes "on water" "in water", using 2 wt% of the surfactant TPGS-750-M revealed that the in-water protocol not only provides higher yields but also accommodates a broader substrate scope. This bromination method in an aqueous micellar medium enabled the preparation of brominated α-oxo ketene dithioacetals in fair to excellent yields (23 examples).

View Article and Find Full Text PDF

Background: Apart from child behavioral problems which were ameliorated by increasing parenting skills, parental well-being is one of the important components for development of parenting sense of competence (PSOC), which subsequently affects parenting style and child outcomes. This randomized controlled trial study aims to determine whether a brief asynchronous parent-focused online video intervention (POVI) that was easily accessible would be effective in increasing PSOC and parental well-being.

Methods: One hundred and twenty parents, with a poor Thai Mental Health Indicators-15 score or mild-moderate depression/anxiety, of children aged 3-10 years, were randomized into two parallel groups, intervention and control groups (1:1).

View Article and Find Full Text PDF

Background: Equipping parents with play skills can foster child development. This study examined the effects of Power of Play Parent Intervention, a short, online, asynchronous, play skill enhancement program, on the frequency of total parent-child play, parents' attitude towards play, and children's screen time in Thailand.

Methods: From September to December 2023, 112 parents of children aged 12-36 months from social media platforms were block-randomized into two-arm, parallel groups (56 intervention and 56 waitlist control).

View Article and Find Full Text PDF

Prostate cancer (PCa) is one of the most common cancers among men worldwide, and robot-assisted radical prostatectomy (RARP) is a widely used treatment for localized PCa. Achieving pentafecta outcomes, which include continence, potency, cancer control, free surgical margins, and no major complications, is a critical measure of surgical success and long-term prognosis. However, predicting these outcomes remains challenging.

View Article and Find Full Text PDF

Asiatic acid methyl ester, a new asiaticoside derivative, induces osteogenic differentiation of hPDLCs.

Arch Oral Biol

January 2025

Pharmaceutical Sciences and Technology Program, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand; Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, Thailand; Center of Excellent in Natural Products and Nanoparticles (NP2), Chulalongkorn University, Bangkok, Thailand.

Objective: Asiaticoside has the capacity to induce osteogenic differentiation of human periodontal ligament cells (hPDLCs) through Wnt (Wingless-related integration site) signaling. A modified chemical structure (by removing glycoside side chain), referred to as asiatic acid methyl ester (AA1), has been constructed and evaluated for its capacity to induce osteogenic differentiation.

Design: hPDLCs viability was determined by MTT assay.

View Article and Find Full Text PDF

This study aims to observe the effects of financial metrics, free float shareholders, GDP growth and firm age on dividend payout policy in both the short- and long-term scenarios. The study introduces the dynamic panel regression models, i.e.

View Article and Find Full Text PDF

Background: Basal cell carcinoma (BCC) is the most common form of skin cancer and poses treatment challenges in advanced stages. Treatment options include surgery, radiotherapy, and systemic therapies, but tumor location and prior interventions can limit these methods. Hedgehog pathway inhibitors (HPIs) are used for patients unsuitable for conventional treatments.

View Article and Find Full Text PDF

Hyaluronic acid (HA) is a popular surface modifier in targeted cancer delivery due to its receptor-binding abilities. However, HA alone faces limitations in lipid solubility, biocompatibility, and cell internalization, making it less effective as a standalone delivery system. This comprehensive study aimed to explore a dynamic landscape of complexation in HA-based nanoparticles in cancer therapy, examining diverse aspects from influential modifiers to emerging trends in cancer diagnostics.

View Article and Find Full Text PDF

Cadmium is a non-essential element and neurotoxin that causes neuroinflammation, which leads to neurodegenerative diseases and brain cancer. To date, there are no specific or effective therapeutic agents to control inflammation and alleviate cadmium-induced progressive destruction of brain cells. Fluoroquinolones (FQs), widely used antimicrobials with effective blood-brain barrier penetration, show promise in being repurposed as anti-inflammatory drugs.

View Article and Find Full Text PDF

Anti-programmed cell death 1 (PD-1) monoclonal antibodies (mAbs) have proven to be effective in treating various cancers, including colorectal, lung, and melanoma. Despite their clinical success, some patients develop resistance to mAbs, requiring co-treatments with radio- or chemotherapy. Interleukin-15 (IL-15) is an immunostimulatory cytokine that promotes immune cell production and proliferation.

View Article and Find Full Text PDF

Background/purpose: Many designs of static computer-assisted implant surgery (sCAIS) are available for clinician to achieve proper implant position. However, there were not any studies that approached the design alone to evaluate whether sleeve-in-sleeve or sleeve-on-drill design provided most accuracy implant position. The purpose of this study was to investigate the precision of implant placement with sleeve-in-sleeve and sleeve-on-drill static computer assisted implant surgery (sCAIS) designs.

View Article and Find Full Text PDF

Background/purpose: Computer-assisted implant surgery (CAIS) is increasingly performed to reduce deviations in implant position. Dynamic CAIS or navigation systems provide instant display of implant drilling instruments and patient positions directly on the computer monitor. Augmented reality (AR) technology allows operators to visualize real-time information projected onto the lenses of AR glasses.

View Article and Find Full Text PDF

Background And Aim: A critical causative factor of oxidative stress and inflammation leading to several skin complications is ultraviolet-B (UVB) irradiation. (LR), or tiger milk mushroom, is native to Southeast Asia. Cold water extract of an LR cultivar, TM02® (xLr®) is a promising anti-oxidant and anti-inflammatory source.

View Article and Find Full Text PDF

Background/purpose: The increasing importance of computer assisted implant surgery (CAIS) in the practice of implant dentistry calls for adequate education and training of clinicians. However, limited evidence exists to support optimal educational strategies and best practices. This study aimed to investigate the effectiveness of distributed training with dynamic CAIS (d-CAIS) on the precision of freehand implant placement by inexperienced operators.

View Article and Find Full Text PDF

This study presents a new highly sensitive and specific time-resolved fluoroimmunoassay (TRFIA) for the measurement of trace amounts of the urinary 8-hydroxy-2`-deoxyguanosine (8-OHdG) which is a biomarker for oxidative stress on DNA. The assay relied on a competitive binding approach and a mouse monoclonal antibody which recognized 8-OHdG with high specificity. In this assay, 8-OHdG conjugated with bovine serum albumin protein (8-OHdG-BSA) was employed as a solid phase antigen.

View Article and Find Full Text PDF

In vitro analysis of composition profiles of resins for 3D printing of dentures.

J Dent

January 2025

Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland. Electronic address:

Objective: This study aimed to investigate the resin compounds from CAD-CAM 3D-printed denture resins, focusing on the identification and classification of free monomers and other components. The primary objective was to determine the chemical profile of these 3D-prinding resin materials.

Methods: Four 3D-printed denture resins, two base materials (1: DentaBASE, Asiga Ltd.

View Article and Find Full Text PDF