945 results match your criteria: "Chulabhorn Research Institute[Affiliation]"

Dual-functional natural rubber latex foam composites for solar-driven clean water production and heavy metal decontamination.

Int J Biol Macromol

July 2024

Department of Materials Science, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand; Laboratory of Organic Synthesis, Chulabhorn Research Institute, Bangkok 10210, Thailand; Specialized Center of Rubber and Polymer Materials for Agriculture and Industry (RPM), Faculty of Science, Kasetsart University, Bangkok 10900, Thailand. Electronic address:

Solar steam generation (SSG) offers a sustainable approach to fresh water production. Herein, a novel dual-functional natural rubber/carbon black composite foam evaporator is presented for a cost-efficient SSG system that both produces fresh water and eliminates heavy metals present in the water. The composite foam is produced using the Dunlop process, and in its optimized form, it absorbed >96 % of sunlight.

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Unveiling Route for the Synthesis of Tröger's Bases Through Azide Rearrangement.

Chem Asian J

September 2024

Program on Chemical Sciences, Chulabhorn Graduate Institute, Center of Excellence on Environmental Health and Toxicology (EHT), OPS, MHESI, 54 Kamphaeng Phet 6, Laksi, Bangkok, 10210, Thailand.

This study introduces a novel method for producing Tröger's bases by utilizing the rearrangement chemistry of benzyl azide. This method offers a convenient and adaptable pathway for synthesizing these important molecular structures with potential for further advancements. By reacting benzyl azide derivatives with TfOH under the presence of water, this process generates iminium ion, formaldehyde, and aniline intermediates in situ.

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Article Synopsis
  • * While the FDA considers parabens safe, there are emerging concerns about their effects on the immune system, particularly regarding immunotoxicity.
  • * Research shows that certain parabens can impair macrophage function, affecting their ability to respond to inflammation and pathogens, which raises concerns about human health and ecological impacts.
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Synthesis, crystal structure and properties of poly[di-μ-chlorido-di-μ-chlorido-bis-[4-methyl--(pyridin-2-yl-methyl-idene)aniline]dicadmium(II)].

Acta Crystallogr E Crystallogr Commun

May 2024

Thammasat University Research Unit in Multifunctional Crystalline Materials and Applications (TU-MCMA), Faculty of Science and Technology, Thammasat University, Pathum Thani 12121, Thailand.

The title coordination polymer with the 4-methyl--(pyridin-2-yl-methyl-idene)aniline Schiff base ligand (, CHN), [CdCl(CHN)] (), exhibits a columnar structure extending parallel to [100]. The columns are aligned in parallel and are decorated with chelating ligands on both sides. They are elongated into a supra-molecular sheet extending parallel to (01) through π-π stacking inter-actions involving ligands of neighbouring columns.

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Amikacin and piperacillin/tazobactam are frequent antibiotic choices to treat bloodstream infection, which is commonly fatal and most often caused by bacteria from the family Enterobacterales. Here we show that two gene cassettes located side-by-side in and ancestral integron similar to In37 have been "harvested" by insertion sequence IS26 as a transposon that is widely disseminated among the Enterobacterales. This transposon encodes the enzymes AAC(6')-Ib-cr and OXA-1, reported, respectively, as amikacin and piperacillin/tazobactam resistance mechanisms.

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Quantifying fecal and plasma short-chain fatty acids in healthy Thai individuals.

Comput Struct Biotechnol J

December 2024

Department of Biochemistry, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand.

Short-chain fatty acids (SCFAs) are involved in important physiological processes such as gut health and immune response, and changes in SCFA levels can be indicative of disease. Despite the importance of SCFAs in human health and disease, reference values for fecal and plasma SCFA concentrations in healthy individuals are scarce. To address this gap in current knowledge, we developed a simple and reliable derivatization-free GC-TOFMS method for quantifying fecal and plasma SCFAs in healthy individuals.

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Effects of efflux pumps on antifungal activity of chitosan against .

J Oral Microbiol

May 2024

Department of Microbiology and Center of Excellence on Oral Microbiology and Immunology, Faculty of Dentistry, Chulalongkorn University, Pathumwan, Bangkok, Thailand.

Background: Antifungal resistance is a major problem, commonly caused by drug-efflux pump overexpression. To evaluate if chitosan could be effective in drug-resistant infections, we investigated the effects of efflux pumps on antifungal activity of chitosan.

Materials And Methods: The minimal fungicidal concentration (MFC) of oligomer (7-9 kD) and polymer (900-1,000 kD) chitosan against and were evaluated by broth and agar dilution methods.

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Background: Ameloblastoma (AM) is a benign tumor locally originated from odontogenic epithelium that is commonly found in the jaw. This tumor makes aggressive invasions and has a high recurrence rate. This study aimed to investigate the differentially expressed genes (DEGs), biological function alterations, disease targets, and existing drugs for AM using bioinformatics analysis.

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Cholangiocarcinoma (CCA) is a lethal cancer originating from the epithelial cells within the bile duct and ranks as the second most prevalent form of liver cancer in Thailand. Polo-like kinase 1 (PLK1), a protein serine/threonine kinase, regulates a number of steps in cell mitosis and is upregulated in several types of cancer, including CCA. Our previous study identified PLK1 as a biomarker of the C1 subtype, correlating with poor prognosis in intrahepatic CCA.

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Association between oral health and cognitive impairment in older adults: Insights from a Six-year prospective cohort study.

J Dent

August 2024

Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, No. 17, Xuzhou Road, Taipei 100025, Taiwan; Department of Public Health, College of Public Health, National Taiwan University, No. 17, Xuzhou Road, Taipei 100025, Taiwan. Electronic address:

Objective: This study aims to investigate the relationships between four baseline oral conditions (periodontal status, dental caries, tooth wear, and dentition) and repeated global cognition or domain-specific cognition (memory, executive function, attention, and verbal fluency) in non-demented older adults over time.

Methods: This prospective cohort study (2011-2019) enrolled 516 non-demented community-dwelling older adults (age ≥ 65) to explore the association between oral health and cognitive function. Global and domain-specific cognition were assessed biennially (four repeats) using a battery of neuropsychological tests.

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Nitrofurantoin resistance in is primarily caused by mutations damaging two enzymes, NfsA and NfsB. Studies based on small isolate collections with defined nitrofurantoin MICs have found significant random genetic drift in and , making it extremely difficult to predict nitrofurantoin resistance from whole-genome sequence (WGS) where both genes are not obviously disrupted by nonsense or frameshift mutations or insertional inactivation. Here, we report a WGS survey of 200 -negative from community urine samples, of which 34 were nitrofurantoin resistant.

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Thailand is among countries with the highest global incidence and mortality rates of hepatocellular carcinoma (HCC) and intrahepatic cholangiocarcinoma (iCCA). While viral hepatitis and liver fluke infections have been associated with HCC and iCCA, respectively, other environmental risk factors, overall risk factor commonality and combinatorial roles, and effects on survival have not been systematically examined. We conducted a TIGER-LC consortium-based population study covering all high-incidence areas of both malignancies across Thailand: 837 HCC, 1474 iCCA, and 1112 controls (2011-2019) were comprehensively queried on lifelong environmental exposures, lifestyle, and medical history.

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Accurate taxonomic profiling of microbial taxa in a metagenomic sample is vital to gain insights into microbial ecology. Recent advancements in sequencing technologies have contributed tremendously toward understanding these microbes at species resolution through a whole shotgun metagenomic (WMS) approach. In this study, we developed a new bioinformatics tool, CAIM, for accurate taxonomic classification and quantification within both long- and short-read metagenomic samples using an alignment-based method.

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Identification of RNF213 as a Potential Suppressor of Local Invasion in Intrahepatic Cholangiocarcinoma.

Lab Invest

July 2024

Program in Translational Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand; Integrative Computational Bioscience (ICBS) Center, Mahidol University, Nakhon Pathom, Thailand; Chakri Naruebodindra Medical Institute, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bang Phli, Samut Prakan, Thailand. Electronic address:

Intrahepatic cholangiocarcinoma (ICC) is a lethal cancer with poor survival especially when it spreads. The histopathology of its rare intraductal papillary neoplasm of the bile duct type (IPNB) characteristically shows cancer cells originating within the confined bile duct space. These cells eventually invade and infiltrate the nearby liver tissues, making it a good model to study the mechanism of local invasion, which is the earliest step of metastasis.

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A longitudinal study on the impact of breastfeeding with or without formula milk on dental caries.

Sci Rep

May 2024

Division of Dental Public Health, Department of Preventive Dentistry, Faculty of Dentistry, Khon Kaen University, Muang District, Khon Kaen, 40002, Thailand.

Concerns exist about prolonged breastfeeding increasing dental caries risk, but evidence is mixed. This 2-year cohort study followed 486 toddlers, to examine the association between breastfeeding duration and caries at age 3. Caregivers reported feeding practices and potential confounders every 6 months.

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The coagulation process has a high potential as a treatment method that can handle pathogenic viruses including emerging enveloped viruses in drinking water treatment process which can lower infection risk through drinking water consumption. In this study, a surrogate enveloped virus, bacteriophage Փ6, and surrogate non-enveloped viruses, including bacteriophage MS-2, T4, ՓX174, were used to evaluate removal efficiencies and mechanisms by the conventional coagulation process with alum, poly‑aluminum chloride, and ferric chloride at pH 5, 7, and 9 in turbid water. Also, treatability of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), a recent virus of global concern by coagulation was evaluated as SARS-CoV-2 can presence in drinking water sources.

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A transition-metal- and photocatalyst-free photochemical reaction was successfully developed for the direct acylation of quinoxalin-2(1)-ones, which was enabled by the formation of electron donor-acceptor (EDA) complexes. The use of 1,8-diazabicyclo[5.4.

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Morus alba known as a white mulberry is a medicinal plant that has been used in food ingredients and traditional medicine. M. alba leaves contain various bioactive phenolic compounds, in particular chlorogenic acid (CGA), which is a major bioactive ingredient.

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Introduction: Andrographis paniculata (AP) has been approved by the Thai government for the treatment of mild cases of COVID-19 patients. Increasing use of AP products requires quality control to ensure efficacy and safety. At present, there is no requirement for dissolution test of AP products in the Thai Herbal Pharmacopoeia (THP).

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Analogs of pyrrole alkaloid lamellarins exhibit anticancer activity by modulating multiple cellular events. Lethal doses of several lamellarins were found to enhance autophagy flux in HeLa cells, suggesting that lamellarins may modulate protein homeostasis through the interference of proteins or kinases controlling energy and nutrient metabolism. To further delineate molecular mechanisms and their targets, our results herein show that azalamellarin D (AzaD) cytotoxicity could cause translational attenuation, as indicated by a change in eIF2α phosphorylation.

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Splenectomised β-thalassaemia/haemoglobin E (HbE) patients have increased levels of circulating microparticles or medium extra-cellular vesicles (mEVs). The splenectomised mEVs play important roles in thromboembolic complications in patients since they can induce platelet activation and endothelial cell dysfunction. However, a comprehensive understanding of the mechanism of mEV generation in thalassaemia disease has still not been reached.

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Meroterpenoid clavilactones feature a unique benzo-fused ten-membered carbocyclic ring unit with an α,β-epoxy-γ-lactone moiety, forming an intriguing 10/5/3 tricyclic nested skeleton. These compounds are good inhibitors of the tyrosine kinase, attracting a lot of chemical synthesis studies. However, the natural enzymes involved in the formation of the 10/5/3 tricyclic nested skeleton remain unexplored.

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Article Synopsis
  • Hepatocellular carcinoma (HCC) is a complex cancer with diverse genetic mutations, making it challenging to study tumor cell evolution due to many inconsequential mutations.
  • A new strategy was developed to analyze tumor clonality in 524 HCC patients, revealing two main evolution types: linear and non-linear, with further distinctions within non-linear evolution.
  • The study found that linear HCC tumors are less aggressive and linked to specific mutations, like GTF2IRD2B, while non-linear tumors often harbor TP53 mutations, indicating distinct immune responses between the two evolution types that warrant further investigation.
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Exposure to 4,4'-DDE in visceral adipose tissue and weight loss in adolescents from the Teen-LABS cohort.

Obesity (Silver Spring)

May 2024

Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.

Objective: Dichlorodiphenyldichloroethylene (DDE), an obesogen accumulating in adipose tissue, is released into circulation with weight loss, although its impact is underexplored among adolescents. We tested the association using an integrative translational approach of epidemiological analysis among adolescents with obesity and in vitro measures exploring the impact of DDE on adipogenesis via preadipocytes.

Methods: We included 63 participants from the Teen-Longitudinal Assessment of Bariatric Surgery (Teen-LABS) cohort.

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Article Synopsis
  • Ameloblastoma (AM) is a benign but aggressive tumor associated with tooth development, and this study aimed to identify proteomic differences between AM and its surrounding dental tissue (dental follicle, DF).
  • Using shotgun proteomics, researchers analyzed 7 frozen AM samples and 5 DF samples, discovering 7,550 differentially expressed proteins (DEPs), with 520 unique to AM and 216 to DF, revealing distinct biological pathways for each.
  • Key hub genes identified include UBC, BRCA1, and MYC, which were significantly upregulated or downregulated, contributing valuable insights into AM's protein profiles and potential future treatment strategies.
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