Publications by authors named "Mathirut Mungthin"

Background: Engaging students in curriculum development provides valuable insights and promotes alignment with their learning needs. Premedical curricula often overemphasize basic sciences, highlighting the need to incorporate social sciences and earlier patient exposure. This study involved students as key stakeholders in redesigning and evaluating the curriculum's clinical relevance.

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Malaria remains a global health concern, with Thailand primarily experiencing cases in border areas and from imported infections. During the third rotation of Thai peacekeeping troops returning from South Sudan between June and November 2023, a malaria outbreak was reported. In response to the outbreak, we conducted a retrospective cohort study, in which we identified 46 confirmed cases of malaria, with 27 occurring postdeployment.

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Background: Cardiovascular disease (CVD) remains the leading cause of morbidity and mortality worldwide. The triglyceride to high-density lipoprotein cholesterol (TG/HDL) ratio has emerged as a potential marker for CVD risk. However, its predictive value for high 10-year predicted Cardiovascular (CV) risk remains unclear; This study evaluates the predictive value of the TG/HDL-C ratio for 10-year cardiovascular risk using the Framingham Heart Study (FHS) risk prediction model in individuals with Type 2 Diabetes Mellitus (T2DM).

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Leishmania orientalis, previously called L. siamensis, is a new species characterized as causing cutaneous leishmaniasis in Thailand. This study solves the crystal structure of the L.

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Article Synopsis
  • Amphotericin B (AmB) is a strong antifungal and antiparasitic drug that kills leishmanial parasites by disrupting their cell membranes, making it important to study its effects on parasites like Leishmania orientalis to understand potential drug resistance.
  • This study involved exposing a specific Leishmania orientalis strain to AmB and analyzing genetic changes through sequencing methods, focusing on single nucleotide polymorphisms (SNPs) and gene expression changes.
  • The results indicated no significant chromosomal alterations post-treatment, but a higher incidence of SNPs in the control group, along with the downregulation of key genes, suggesting complex regulatory mechanisms might contribute to AmB resistance in this strain.
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Purpose: To assess the clinical characteristics, progression patterns, and treatment outcomes of microbiologically confirmed microsporidial keratoconjunctivitis (MKC).

Methods: This prospective cross-sectional study included patients with superficial punctate epithelial keratitis clinically suspected of MKC. Comprehensive slit-lamp examinations were conducted, and corneal scraping was performed for Gram-chromotrope staining and polymerase chain reaction (PCR) analysis.

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Objectives: This study aimed to enhance the learning experience among medical students by empowering them to co-create learning tools and classroom activities.

Methods: A cross-sectional study was conducted with 10 participants from Year 2 of the new curriculum volunteering to participate in this study. Five were selected based on their diversities and empowered to design learning tools and class activities.

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  • Leishmaniasis significantly affects the health of immunocompromised individuals, especially those with HIV, in Thailand, focusing on infections caused by Leishmania martiniquensis and Leishmania orientalis.
  • A study conducted in Trang Province followed 506 HIV-infected participants from 2015-2019 to investigate the incidence and persistence of Leishmania infections, utilizing tests like Direct Agglutination Test and nested PCR.
  • The findings revealed a 3.2% incidence rate in initially negative participants, with older age being a key risk factor, as well as a 3.7% persistence rate in those initially positive; all individuals were asymptomatic, highlighting the need for ongoing monitoring and targeted interventions.
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  • There has been a rise in clinical cases of leishmaniasis in Southeast Asia, particularly in Thailand, with evidence suggesting that Culicoides biting midges play a significant role in transmitting Leishmania (Mundinia) parasites.
  • A study conducted from 2021 to 2023 in Lampang Province, Northern Thailand, involved collecting and analyzing samples of Culicoides midges to understand their infection rates and host preferences.
  • Results showed that 31 samples from various midge species tested positive for Leishmania, with a 5.7% infection rate, identifying six species as new potential leishmaniasis vectors, predominantly carrying Leishmania martiniquensis.
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Leishmaniasis, a neglected tropical disease caused by parasitic protozoa of the Leishmania genus, remains a global health concern with significant morbidity and mortality. In Thailand, the rising incidence of autochthonous leishmaniasis cases involving Leishmania (Mundinia) martiniquensis and novel Leishmania (Mundinia) orientalis underscores the critical need for accurate diagnosis and effective control strategies. This study presents a sensitive and specific nucleic acid lateral flow immunoassay (NALFIA) that integrates a duplex PCR assay with a lateral flow device (LFD) strip format.

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Article Synopsis
  • The study focuses on the genetic epidemiology and population structure of Opisthorchis-like parasites in northern Thailand, specifically the hill tribe regions of Chiang Mai Province.
  • Researchers identified Opisthorchis viverrini and Haplorchis taichui in fecal samples, with prevalence rates of 10.5% and 38.2%, respectively, and a co-infection rate of 37.2%.
  • Genetic analyses based on cox1 and nad1 genes showed minimal genetic differentiation among populations, indicating significant gene flow and population expansion in both parasite species.
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Leishmaniasis poses significant public health challenges in endemic regions. Understanding the prevalence of asymptomatic Leishmania infection and identifying risk factors among blood donors is crucial. This study addressed a knowledge gap by evaluating the prevalence of asymptomatic Leishmania infection and pinpointing associated risk factors among blood donors in an endemic area in Thailand and aimed to enhance blood donation safety protocols and reduce the risk of transfusion-transmitted Leishmania infection.

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Leishmaniasis, a neglected tropical disease, imposes a notable health burden, especially on immunocompromised individuals such as HIV patients. Recognizing its prevalence and risk factors in specific populations is vital for effective prevention. This study in Satun Province, southern Thailand, aimed to ascertain leishmaniasis prevalence and identify associated risks among HIV-infected patients.

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  • The study investigates the genetic diversity of the circumsporozoite surface protein (PvCSP) in malaria parasites from Yala Province, Thailand, an area not extensively studied despite its status as a malaria hotspot.
  • Researchers collected 89 isolates between 2018 and 2020, finding that all belonged to the VK210 type and exhibited two common peptide repeat motifs.
  • The results highlight limited diversity among VK210 variants in southern Thailand and suggest the findings can help track potential new variants for better malaria management in the region.
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Background: Uncontrolled type 2 diabetes (T2DM) and limited hemoglobin A1c (HbA1c) levels examination are a burden in community hospitals in Thailand. The nomogram from the patients' information might be a practical solution to identify a high-risk group of diabetic complications. Thus, this study aimed to establish an effective prognostic nomogram for patients with uncontrolled T2DM.

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Background: Hyperuricemia has placed an immense burden on the global healthcare system. Studies have discovered a close correlation between serum uric acid (SUA) and insulin resistance (IR). The objective of this investigation is to examine the association between the triglyceride-glucose (TyG) index, a simple surrogate for IR, and the presence of hyperuricemia.

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Objectives: Primaquine is metabolized by the cytochrome P450-2D6 enzyme (CYP2D6) to an active primaquine-5,6-orthoquinone (POQ). No relationships of polymorphisms with the pharmacokinetics of primaquine and POQ were reported in the Thai population.

Methods: We evaluated the genetic distribution of in 345 Thai army populations together with the pharmacokinetic profiles of primaquine and POQ in plasma and urine (n = 44, descriptive data are presented in median (range)).

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Article Synopsis
  • Since 1999, asymptomatic leishmaniasis cases in Thailand have increased, especially among HIV patients, leading to higher risks of severe forms of the disease.
  • The study focuses on the genetic variation and geographic distribution of Leishmania/HIV co-infection in northern and southern Thailand, revealing that Leishmania orientalis is the most common strain in both areas.
  • Findings suggest that asymptomatic infections contribute significantly to the transmission and prevalence of Leishmania, highlighting the need for better diagnostic and treatment strategies to control its spread.*
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Leishmaniasis is an emerging infectious disease in Thailand, with Leishmania martiniquensis and Leishmania orientalis identified as the primary causative agents among immunocompetent and immunocompromised individuals. Variations in drug susceptibility among different Leishmania species have been reported in different regions. Therefore, drug susceptibility assays are essential to assess the effectiveness of antileishmanial drugs used or potentially used in the affected areas.

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Article Synopsis
  • Mitochondrial DNAs (mtDNAs) are important for studying evolutionary relationships and species identification, particularly in eukaryotes, while kinetoplast DNAs (kDNAs) in kinetoplastids have a complex structure, comprising maxicircles and minicircles.
  • This study focused on the kDNAs of a newly examined species, Leishmania orientalis strain PCM2, utilizing hybrid genome sequencing to analyze and reconstruct its kDNA sequences.
  • The research discovered high similarity between L. orientalis maxicircle and another strain, L. enriettii, and identified multiple classes of minicircles, providing genetic insights that may assist in diagnosis and understanding the parasite's genetics in Thailand.
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Uropathogenic Escherichia coli (UPEC) causes up to 90% of urinary tract infections (UTI) which is more prevalent among females than males. In urine, patients with symptomatic UTI usually have a high concentration of bacterial infection, ≥ 10 colony-forming units (CFU) per mL, in which the culture method is regularly the gold standard diagnosis. In this study, a simple and inexpensive distance-based paper device (dPAD) combined with the fluorescent closed tube LAMP assay was validated for simultaneously screening and semi-quantifying the infection level of E.

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  • High total cholesterol (TC) is a known risk factor for cardiovascular diseases, and about 23.5% of Thai civilians have high TC, but data on the Royal Thai Army (RTA) personnel is scarce.
  • A study analyzed trends in serum TC and high TC prevalence among active RTA personnel aged 35-60 from 2017 to 2022, finding that high TC prevalence initially decreased but then increased again, particularly among younger individuals and those in specific regions.
  • High body mass index, blood pressure, and hyperglycemia were identified as factors associated with high TC, highlighting it as a significant health issue among RTA personnel.
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  • * In a sample of 63,815 T2D patients, a decreasing trend in TyG index was observed from 2014 to 2018, with a specific cutoff value determined for predicting intermediate-to-high CVD risk.
  • * Despite finding a positive correlation between TyG index and predicted CVD risk, the study questions the effectiveness of the TyG index in reliably predicting CVD risk over a 10-year period in this population.
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