51 results match your criteria: "Medical Life Sciences Institute[Affiliation]"

Nevirapine (NVP) and Efavirenz (EFV) can cause antiretroviral drug-induced liver injury (ARVDILI). The objectives of this study were to summarize and analyze existing data on pharmacogenomics associated with nonnucleoside reverse transcriptase inhibitors drug-induced liver injury using systematic review and meta-analysis. This study systematically searched the relevant studies regarding pharmacogenes related to ARVDILI from online databases.

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This sub-study sought to characterize the pharmacokinetics (PK) of favipiravir (FPV) within Thai adults and quantitatively assess differences in exposure to those previously reported in other populations as a basis to understand putative differences in efficacy between studies conducted in different regions. It was nested within a prospective trial of adults with symptomatic COVID-19 infection without pneumonia receiving 1800 mg FPV twice-daily on day 1 and 800 mg twice-daily thereafter. Individual PK profiles were fitted with a one-compartment disposition model (first-order absorption).

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Hematopoietic stem cell isolated from a healthy 39-year-old woman were successfully reprogrammed and transformed into induced pluripotent stem cell (iPSCs) by using the integration-free episomal vector included OCT3/4/shp53, Sox2/KLF4, L-MYC/LIN28 and EBNA-1 reprogramming factors. The transformed iPSC lines were cultured and expanded under feeder-free condition. They demonstrated the normal karyotype, expressed pluripotency markers and differentiated into cells derived from the three germ layers.

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Comprehensive analysis of Mycobacterium tuberculosis genomes reveals genetic variations in bacterial virulence.

Cell Host Microbe

November 2024

Department of Human Genetics, School of International Health, Graduate School of Medicine, The University of Tokyo, Tokyo 113-0033, Japan. Electronic address:

Tuberculosis, a disease caused by Mycobacterium tuberculosis (Mtb), is a significant health problem worldwide. Here, we developed a method to detect large insertions and deletions (indels), which have been generally understudied. Leveraging this framework, we performed a comprehensive analysis of single nucleotide variants and small and large indels across 1,960 Mtb clinical isolates.

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Data on immunogenicity induced by SARS-CoV-2 infection and its sustainability are essential to inform COVID-19 vaccine schedule. A prospective cohort study was conducted among adults at-risk for COVID-19 during the Omicron variant-dominant epidemic. All were followed up for anti-spike RBD levels on days 0, 14, 90 and 180 after enrollment.

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Genomic Interactions Between and Humans.

Annu Rev Genomics Hum Genet

August 2024

Pornchai Matangkasombut Center for Microbial Genomics, Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, Thailand; email:

is considered by many to be the deadliest microbe, with the estimated annual cases numbering more than 10 million. The bacteria, including , are classified into nine major lineages and hundreds of sublineages, each with different geographical distributions and levels of virulence. The phylogeographic patterns can be a result of recent and early human migrations as well as coevolution between the bacteria and various human populations, which may explain why many studies on human genetic factors contributing to tuberculosis have not been replicable in different areas.

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SARS-CoV-2 variant with the spike protein mutation F306L in the southern border provinces of Thailand.

Sci Rep

April 2024

Pornchai Matangkasombut Center for Microbial Genomics, Department of Microbiology, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand.

The southernmost part of Thailand is a unique and culturally diverse region that has been greatly affected by the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) outbreak during the coronavirus disease-2019 pandemic. To gain insights into this situation, we analyzed 1942 whole-genome sequences of SARS-CoV-2 obtained from the five southernmost provinces of Thailand between April 2021 and March 2022, together with those publicly available in the Global Initiative on Sharing All Influenza Data database. Our analysis revealed evidence for transboundary transmissions of the virus in and out of the five southernmost provinces during the study period, from both domestic and international sources.

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Members of the group are spore-forming Gram-positive bacilli that are commonly associated with diarrheal or emetic food poisoning. They are widespread in nature and frequently present in both raw and processed food products. Here, we genetically characterized 24 group isolates from foodstuffs.

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Whole genome sequencing (WGS) of Mycobacterium tuberculosis offers valuable insights for tuberculosis (TB) control. High throughput platforms like Illumina and Oxford Nanopore Technology (ONT) are increasingly used globally, although ONT is known for higher error rates and is less established for genomic studies. Here we present a study comparing the sequencing outputs of both Illumina and ONT platforms, analysing DNA from 59 clinical isolates in highly endemic TB regions of Thailand.

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Thailand experienced five waves of coronavirus disease 2019 (COVID-19) between 2020 and 2022, with the Bangkok Metropolitan Region (BMR) being at the centre of all outbreaks. The molecular evolution of the causative agent of the disease, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has previously been characterized in Thailand, but a detailed spatiotemporal analysis is still lacking. In this study, we comprehensively reviewed the development and timelines of the five COVID-19 outbreaks in Thailand and the public health responses, and also conducted a phylogenetic analysis of 27 913 SARS-CoV-2 genomes from Thailand, together with 7330 global references, to investigate the virus's spatiotemporal evolution during 2020 and 2022, with a particular focus on the BMR.

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Recombinant Dense Granule Protein (NcGRA4) Is a Novel Serological Marker for Infection in Goats.

Animals (Basel)

June 2023

Department of Pre-Clinic and Applied Animal Science, Faculty of Veterinary Science, Mahidol University, 999 Phuthamonthon Sai 4 Rd, Salaya, Nakhon Pathom 73170, Thailand.

is widely recognised as one of the most significant causes of abortion in cattle, with infections also occurring in sheep and goats. To prevent and control animal neosporosis, it is crucial to develop sensitive and specific methods for detecting infection. Recently, several recombinant proteins have been utilised in serological assays for the diagnosis of neosporosis.

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Objectives: To develop an animal-derived component-free medium for Spodoptera frugiperda (Sf9) growth and green fluorescent protein (GFP) expression.

Results: OSF9-ADCFM contained optimum concentrations of CDLC, YE and ST at 0.5% (v/v), 11.

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Multi-stage tuberculosis (TB) vaccines composed of active- and dormancy-associated antigens are promising to trigger the immune protection against all TB stages. However, scientists are still in quest of the suitable vaccine candidates. In this study, we identified the potential targets for this vaccine in a high TB burden country, Thailand.

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This study aimed to characterize whole-genome sequencing (WGS) information of (Mtb) in the Mandalay region of Myanmar. It was a cross-sectional study conducted with 151 Mtb isolates obtained from the fourth nationwide anti-tuberculosis (TB) drug-resistance survey. Frequency of lineages 1, 2, 3, and 4 were 55, 65, 9, and 22, respectively.

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The genetics underlying tuberculosis (TB) pathophysiology are poorly understood. Human genome-wide association studies have failed so far to reveal reproducible susceptibility loci, attributed in part to the influence of the underlying Mycobacterium tuberculosis (Mtb) bacterial genotype on the outcome of the infection. Several studies have found associations of human genetic polymorphisms with Mtb phylo-lineages, but studies analysing genome-genome interactions are needed.

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SARS-CoV-2 Seroprevalence in Unvaccinated Adults in Thailand in November 2021.

Vaccines (Basel)

December 2022

Administrative Offices, Department of Medical Sciences, Ministry of Public Health, Nonthaburi 11000, Thailand.

Between the first case of COVID-19 in January 2020 and the end of 2021, Thailand experienced four waves of the epidemic. The third and fourth waves were caused by the alpha and delta strains from April 2021 to November 2021. Serosurveillance studies provide snapshots of the true scale of the outbreak, including the asymptomatic infections that could not be fully captured by a hospital-based case detection system.

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A tuberculin skin test (TST) or interferon-gamma release assay (IGRA) can be used to screen for latent tuberculosis infection (LTBI). Due to its low cost, TST has been used particularly in underdeveloped countries. The limitations of TST were poor specificity in populations with a high prevalence of Bacille Calmette-Guérin (BCG) vaccination and variability of test readers.

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Genetic basis of sudden death after COVID-19 vaccination in Thailand.

Heart Rhythm

November 2022

Center of Excellence for Medical Genomics, Department of Pediatrics, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Excellence Center for Genomics and Precision Medicine, King Chulalongkorn Memorial Hospital, The Thai Red Cross Society, Bangkok, Thailand. Electronic address:

Background: Severe acute respiratory syndrome coronavirus 2 vaccination reduces morbidity and mortality associated with coronavirus disease 2019 (COVID-19); unfortunately, it is associated with serious adverse events, including sudden unexplained death (SUD).

Objective: We aimed to study the genetic basis of SUD after COVID-19 vaccination in Thailand.

Methods: From April to December 2021, cases with natural but unexplained death within 7 days of COVID-19 vaccination were enrolled for whole exome sequencing.

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Purpose: Pharmacogenetics (PGx) testing is one of the methods for determining whether individuals are at risk of adverse drug reactions (ADRs). It has been reported that multiple-PGx testing, a sequencing technology, has a higher predictive value than single-PGx testing. Therefore, this study aimed to determine the most cost-effective PGx testing strategies for preventing drug-induced serious ADRs in human immunodeficiency virus (HIV)-infected patients.

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In response to the SARS-CoV-2 Delta variant, which partially escaped the vaccine-induced immunity provided by two doses of vaccination with CoronaVac (Sinovac), the National Vaccine Committee recommended the heterologous CoronaVac-ChAdOx1 (Oxford−AstraZeneca), a prime−boost vaccine regimen. This pilot study aimed to describe the immunogenicity and adverse events of the heterologous CoronaVac-ChAdOx1 regimen, in comparison with homologous CoronaVac, and homologous ChAdOx1. Between May and August 2021, we recruited a total of 354 participants from four vaccination groups: the CoronaVac-ChAdOx1 vaccinee (n = 155), the homologous CoronaVac vaccinee (n = 32), the homologous ChAdOx1 vaccinee (n = 47), and control group of COVID-19 patients (n = 120).

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Purpose: Given the lack of economic evaluation study of molecular testing in Thailand, this study aimed to evaluate the cost-utility of molecular testing algorithms including Xpert MTB/RIF and the loop-mediated isothermal amplification (TB-LAMP) in the general population suspected of having pulmonary TB based on a societal perspective.

Methods: A hybrid decision tree Markov model using a 1-month cycle length was used to evaluate costs and outcomes of five TB diagnostic algorithms: 1) sputum smear microscopy (SSM) with culture and drug susceptibility testing (DST), 2) Xpert MTB/RIF add-on, 3) Xpert MTB/RIF initial, 4) TB-LAMP add-on, and 5) TB-LAMP initial during a lifetime period. All costs were calculated in 2021 Baht, and results were presented as an incremental cost-effectiveness ratio (ICER) for molecular testing compared with SSM with culture.

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Vero cells have been widely used in the viral vaccine production due to the recommendation of the World Health Organization regarding its safety and non-tumorigenicity. The aim of this study was to describe the development a modified serum-free medium for Vero cell cultures. Two protein hydrolysates (Bacto™ soytone and Bacto™ yeast extract), vitamin C, vitamin B12, SITE liquid media supplement, and recombinant human epidermal growth factor (rEGF) were investigated as serum substitutes.

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Rationale: Nontuberculous mycobacteria (NTM) are environmental mycobacteria that can cause a chronic progressive lung disease. Although epidemiological data indicate potential genetic predisposition, its nature remains unclear.

Objectives: We aimed to identify host susceptibility loci for complex (MAC), the most common NTM pathogen.

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Background: The development of sensitive and specific methods for detecting Toxoplasma gondii infection is critical for preventing and controlling toxoplasmosis in humans and other animals. Recently, various recombinant proteins have been used in serological tests for diagnosing toxoplasmosis. The production of these antigens is associated with live tachyzoites obtained from cell cultures or laboratory animals for genomic extraction to amplify target genes.

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