Publications by authors named "Palittapongarnpim P"

Mycobacterium tuberculosis Complex (MTBC), the etiological agent of tuberculosis (TB), demonstrates considerable genotypic diversity with distinct geographic distributions and variable virulence profiles. The pe-ppe gene family is especially noteworthy for its extensive variability and roles in host immune response modulation and virulence enhancement. We sequenced an Mtb genotype L2.

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  • Tuberculosis caused by Mycobacterium tuberculosis (Mtb) remains a major global health concern, and this study introduces a new method to identify large genetic insertions and deletions (indels) that have been overlooked.
  • The analysis of 1,960 Mtb clinical isolates shows that harmful genetic variants are rarely found in essential survival genes, while Mtb genomes contain many partially harmful mutations.
  • The research also links specific genetic variations, including indels in various genes, to patient outcomes and antibiotic resistance, offering insights that could improve tuberculosis treatment and prediction of risks.
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(MTB) presents a global health issue. Various genotypes of MTB have different geographic distributions. The majority of MTB in Thailand belong to lineages 1 and 2.

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serovar Kentucky ST198 is a major health threat due to its resistance to ciprofloxacin and several other drugs, including third-generation cephalosporins. Many drug-resistant genes have been identified in the genomic island 1 variant K (SGI1-K). In this study, we investigated the antimicrobial resistance (AMR) profile and genotypic relatedness of two isolates of ciprofloxacin-resistant (CIP) .

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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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  • A study analyzed rectal swabs from 104 patients post-abdominal surgery to check for extended-spectrum beta-lactamase (ESBL) producing bacteria, identifying specific sequence types and resistance genes in infections.
  • Most ESBL strains were classified into known sequence types, with stable strains found in some patients before and after surgery, indicating potential persistence of these infections.
  • Key resistant genes identified included multiple β-lactamase classes, which raise concerns about the risk of severe, drug-resistant infections in surgical patients, highlighting the need for vigilant infection monitoring and preventive measures in healthcare settings.
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Despite the importance of methicillin-resistant Staphylococcus aureus (MRSA) as a priority nosocomial pathogen, the genome sequences of Malaysian MRSA isolates are currently limited to a small pool of samples. Here, we present the genome sequence analyses of 88 clinical MRSA isolates obtained from the main tertiary hospital in Terengganu, Malaysia in 2016-2020, to obtain in-depth insights into their characteristics. The EMRSA-15 (ST22-SCCmec IV) clone of the clonal complex 22 (CC22) lineage was predominant with a total of 61 (69.

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  • Thailand went through five COVID-19 waves from 2020 to 2022, mainly affecting the Bangkok Metropolitan Region (BMR), with limited cross-border transmission in the early waves but increased international spread in 2022.
  • A detailed analysis was conducted on the evolution and transmission patterns of SARS-CoV-2 using nearly 28,000 genomes, highlighting the connection between relaxation of travel restrictions and virus spread within the country.
  • The findings provide essential insights into the dynamics of local transmission and can help inform public health strategies for managing potential future outbreaks.
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Mutations in whiB7 have been associated with both hypersusceptibility and resistance to various antibiotics in Mycobacterium tuberculosis (Mtb). Unlocking the secrets of antibiotic resistance in the bacterium, we examined mutations in the coding sequences of whiB7 of over 40,000 diverse Mtb isolates. Our results unveil the dominant c.

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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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Methicillin-resistant (MRSA) is a World Health Organization-listed priority pathogen. Scarce genomic data are available for MRSA isolates from Malaysia. Here, we present the complete genome sequence of a multidrug-resistant MRSA strain SauR3, isolated from the blood of a 6-year-old patient hospitalized in Terengganu, Malaysia, in 2016.

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To determine contributions of previously incarcerated persons to tuberculosis (TB) transmission in the community, we performed a healthcare facility-based cohort study of TB patients in Thailand during 2017-2020. We used whole-genome sequencing of Mycobacterium tuberculosis isolates from patients to identify genotypic clusters and assess the association between previous incarceration and TB transmission in the community. We identified 4 large genotype clusters (>10 TB patients/cluster); 28% (14/50) of the patients in those clusters were formerly incarcerated.

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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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Autophagy induction by starvation has been shown to enhance lysosomal delivery to mycobacterial phagosomes, resulting in the restriction of the Mycobacterium tuberculosis reference strain H37Rv. In contrast to H37Rv, our previous study showed that strains belonging to the notorious M. tuberculosis Beijing genotype could evade autophagic elimination.

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Mycobacterium tuberculosis complex (MTBC) is divided into 9 whole genome sequencing (WGS) lineages. Among them, lineages 1−4 are widely distributed. Multi-drug resistant tuberculosis (MDR-TB) is a major public health threat.

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Research ethics and integrity are essential topics that researchers should always be concerned about and are emphasized by academic communities around the world. However, there is currently little information about the mechanisms to regulate research ethics and integrity in Thailand. Therefore, the aims of this study were to determine the approaches that universities used to support research ethics and integrity in Thailand and also to identify the barriers that may obstruct the development.

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The worldwide spread of carbapenem-resistant (CRAB) has become a healthcare challenge for some decades. To understand its molecular epidemiology in Southern Thailand, we conducted whole-genome sequencing (WGS) of 221 CRAB clinical isolates. A comprehensive bioinformatics analysis was performed using several tools to assemble, annotate, and identify sequence types (STs), antimicrobial resistance (AMR) genes, mobile genetic elements (MGEs), and virulence genes.

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  • There's a new type of tuberculosis called "MKR superspreader" that spreads quickly and is hard to treat because it's resistant to many drugs.
  • In experiments, scientists found that this MKR strain grows faster in immune cells (macrophages) than a standard strain.
  • They discovered that certain genes in these immune cells react differently to the MKR strain, which could help find new ways to fight this tough infection.
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Background: A paucity of studies focused on the genetic association that tuberculosis (TB) patients with non-communicable diseases (NCDs) are more likely to be infected with Mycobacterium tuberculosis (MTB) with more potent virulence on anti-TB drug resistance than those without NCDs. The study aimed to document the predominant genotype, determine the association between MTB genotypes and NCD status and drug resistance.

Methods: We conducted a molecular study in 105 TB patients based on a cross-sectional study focused on the comorbid relationship between chronic conditions and TB among 1773 subjects from September 1, 2019 to August 30, 2020 in Guizhou, China.

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  • Streptococcus agalactiae, also known as Group B Streptococcus (GBS), is primarily known for causing infections in newborns but can also lead to serious diseases in non-pregnant adults, particularly in Southeast Asia.
  • A study sequenced 12 samples of the GBS ST283 genotype from adult patients in Thailand and combined this data with existing sequences to analyze the bacteria's population dynamics and transmission history.
  • The research identified potential drug resistance genes and validated their resistance phenotypes through experiments, providing insights into the historical spread of GBS ST283 in the region.
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Methicillin-resistant Staphylococcus aureus (MRSA) is a significant causative agent of hospital-acquired infections. We characterized MRSA isolated from August 2012 to July 2015 from Thammasat University Hospital. Genotypic characterization of MRSA SCCmec type II and III isolates were scrutinized by whole genome sequencing (WGS).

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Authorship in a scientific publication is an indicator of significant intellectual contribution in scientific work. Regardless of the discipline, it is important for research-related personnel to receive credit and take responsibility for their publications. There are currently several systems of listing authorship that arise from many factors such as research complexity, pressure to obtain funding, hierarchical structure, and promotion.

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Mycobacterium tuberculosis (Mtb) lineage 1 (L1) contributes considerably to the disease morbidity. While whole genome sequencing (WGS) is increasingly used for studying Mtb, our understanding of genetic diversity of L1 remains limited. Using phylogenetic analysis of WGS data from endemic range in Asia and Africa, we provide an improved genotyping scheme for L1.

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  • * New advancements in whole-genome sequencing (WGS) allow for a deeper understanding of the genetic diversity of Mtb L2, leading to a revised classification scheme that includes over 30 genotypes and better identifies Modern Beijing strains.
  • * The newly proposed SNP-based genotyping method accurately classifies over 98% of L2 isolates, enhancing monitoring of TB transmission, outbreaks, and associations with disease severity and drug resistance.
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