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2. Full-length 16S rDNA sequencing based on Oxford Nanopore Technologies revealed the association between gut-pharyngeal microbiota and tuberculosis in cynomolgus macaques

Author

Sawaswong, Vorthon, Chanchaem, Prangwalai, Klomkliew, Pavit, Rotcheewaphan, Suwatchareeporn, Meesawat, Suthirote, Kemthong, Taratorn, Kaewparuehaschai, Mutchamon, Noradechanon, Kirana, Ekatat, Monya, Kanitpun, Reka, Srilohasin, Prapaporn, Warit, Saradee, Chaiprasert, Angkana, Malaivijitnond, Suchinda, and Payungporn, Sunchai

Published
2024
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5. Hepatocyte-specific CCAAT/enhancer binding protein [alpha] restricts liver fibrosis progression

Author

Yan, Tingting, Yan, Nana, Xia, Yangliu, Sawaswong, Vorthon, Zhu, Xinxin, Dias, Henrique Bregolin, Aibara, Daisuke, Takahashi, Shogo, Hamada, Keisuke, Saito, Yoshifumi, Li, Guangming, Liu, Hui, Yan, Hualong, Velenosi, Thomas J., Krausz, Kristopher W., Huang, Jing, Kimura, Shioko, Rotman, Yaron, Qu, Aijuan, Hao, Haiping, and Gonzalez, Frank J.

Subjects
United States. National Institutes of Health, Fibrosis -- Development and progression, Carbon tetrachloride -- Health aspects, Protein binding -- Health aspects, Messenger RNA -- Health aspects, Fructose -- Health aspects, Liver -- Health aspects, Liver diseases -- Development and progression, Health care industry
Abstract

Metabolic dysfunction-associated steatohepatitis (MASH)--previously described as nonalcoholic steatohepatitis (NASH)--is a major driver of liver fibrosis in humans, while liver fibrosis is a key determinant of all-cause mortality in liver disease independent of MASH occurrence. CCAAT/enhancer binding protein [alpha] (CEBPA), as a versatile ligandindependent transcriptional factor, has an important function in myeloid cells, and is under clinical evaluation for cancer therapy. CEBPA is also expressed in hepatocytes and regulates glucolipid homeostasis; however, the role of hepatocytespecific CEBPA in modulating liver fibrosis progression is largely unknown. Here, hepatic CEBPA expression was found to be decreased during MASH progression both in humans and mice, and hepatic CEBPA mRNA was negatively correlated with MASH fibrosis in the human liver. [Cebpa.sup.[DELTA]Hep] mice had markedly enhanced liver fibrosis induced by a high-fat, high-cholesterol, high-fructose diet or carbon tetrachloride. Temporal and spatial hepatocyte-specific CEBPA loss at the progressive stage of MASH in [Cebpa.sup.[DELTA]Hep,ERT2] mice functionally promoted liver fibrosis. Mechanistically, hepatocyte CEBPA directly repressed Spp1 transactivation to reduce the secretion of osteopontin, a fibrogenesis inducer of hepatic stellate cells. Forced hepatocyte-specific CEBPA expression reduced MASH-associated liver fibrosis. These results demonstrate an important role for hepatocyte-specific CEBPA in liver fibrosis progression, and may help guide the therapeutic discoveries targeting hepatocyte CEBPA for the treatment of liver fibrosis., Introduction Growing clinical evidence revealed that liver fibrosis is a main determinant of outcomes or all-cause mortality in liver disease (1-6). Metabolic dysfunction-associated steatotic liver disease (MASLD), previously known as [...]

Published
2024
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8. Viruses in Horses with Neurologic and Respiratory Diseases.

Author

Altan, Eda, Li, Yanpeng, Sabino-Santos, Gilberto, Sawaswong, Vorthon, Barnum, Samantha, Pusterla, Nicola, Deng, Xutao, and Delwart, Eric

Subjects
Animals, Horses, Viruses, Parvovirinae, Hepacivirus, Respiratory Tract Infections, Virus Diseases, Nervous System Diseases, Horse Diseases, RNA, Viral, Phylogeny, Metagenomics, Eqcopivirus, Parvoviridae, bosavirus, equine hepacivirus, equine parvovirus H, horse parvovirus-CSF, virome, Microbiology
Abstract

Metagenomics was used to identify viral sequences in the plasma and CSF (cerobrospinal fluid) of 13 horses with unexplained neurological signs and in the plasma and respiratory swabs of 14 horses with unexplained respiratory signs. Equine hepacivirus and two copiparvoviruses (horse parvovirus-CSF and a novel parvovirus) were detected in plasma from neurological cases. Plasma from horses with respiratory signs contained the same two copiparvoviruses plus equine pegivirus D and respiratory swabs contained equine herpes virus 2 and 5. Based on genetic distances the novel copiparvovirus qualified as a member of a new parvovirus species we named Eqcopivirus. These samples plus another 41 plasma samples from healthy horses were tested by real-time PCRs for multiple equine parvoviruses and hepacivirus. Over half the samples tested were positive for one to three viruses with eqcopivirus DNA detected in 20.5%, equine hepacivirus RNA and equine parvovirus-H DNA in 16% each, and horse parvovirus-CSF DNA in 12% of horses. Comparing viral prevalence in plasma none of the now three genetically characterized equine parvoviruses (all in the copiparvovirus genus) was significantly associated with neurological and respiratory signs in this limited sampling.

Published
2019

12. Hepatocyte-specific CCAAT/enhancer binding protein α restricts liver fibrosis progression

Author

Yan, Tingting, primary, Yan, Nana, additional, Xia, Yangliu, additional, Sawaswong, Vorthon, additional, Zhu, Xinxin, additional, Dias, Henrique Bregolin, additional, Aibara, Daisuke, additional, Takahashi, Shogo, additional, Hamada, Keisuke, additional, Saito, Yoshifumi, additional, Li, Guangming, additional, Liu, Hui, additional, Yan, Hualong, additional, Velenosi, Thomas J., additional, Krausz, Kristopher W., additional, Huang, Jing, additional, Kimura, Shioko, additional, Rotman, Yaron, additional, Qu, Aijuan, additional, Hao, Haiping, additional, and Gonzalez, Frank J., additional

Published
2024
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14. Identification of Bacteria and Viruses Associated with Patients with Acute Febrile Illness in Khon Kaen Province, Thailand.

Author

Jitvaropas, Rungrat, Sawaswong, Vorthon, Poovorawan, Yong, Auysawasdi, Nutthanun, Vuthitanachot, Viboonsak, Wongwairot, Sirima, Rodkvamtook, Wuttikon, Lindroth, Erica, Payungporn, Sunchai, and Linsuwanon, Piyada

Subjects
*MOSAIC viruses, *DENGUE, *BACTERIAL typing, *ACUTE diseases, *VIRUS identification, *WHOLE genome sequencing, *TSUTSUGAMUSHI disease
Abstract

The majority of cases of undifferentiated acute febrile illness (AFI) in the tropics have an undefined etiology. In Thailand, AFI accounts for two-thirds of illnesses reported to the Ministry of Public Health. To characterize the bacterial and viral causes of these AFIs, we conducted molecular pathogen screening and serological analyses in patients who sought treatment in Chum Phae Hospital, Khon Kaen province, during the period from 2015 to 2016. Through integrated approaches, we successfully identified the etiology in 25.5% of cases, with dengue virus infection being the most common cause, noted in 17% of the study population, followed by scrub typhus in 3.8% and rickettsioses in 6.8%. Further investigations targeting viruses in patients revealed the presence of Guadeloupe mosquito virus (GMV) in four patients without other pathogen co-infections. The characterization of four complete genome sequences of GMV amplified from AFI patients showed a 93–97% nucleotide sequence identity with GMV previously reported in mosquitoes. Nucleotide substitutions resulted in amino acid differences between GMV amplified from AFI patients and mosquitoes, observed in 37 positions. However, these changes had undergone purifying selection pressure and potentially had a minimal impact on protein function. Our study suggests that the GMV strains identified in the AFI patients are relatively similar to those previously reported in mosquitoes, highlighting their potential role associated with febrile illness. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Endotoxemia and circulating bacteriome in severe COVID-19 patients

Author

Sirivongrangson, Phatadon, Kulvichit, Win, Payungporn, Sunchai, Pisitkun, Trairak, Chindamporn, Ariya, Peerapornratana, Sadudee, Pisitkun, Prapaporn, Chitcharoen, Suwalak, Sawaswong, Vorthon, Worasilchai, Navaporn, Kampunya, Sarinya, Putcharoen, Opass, Thawitsri, Thammasak, Leelayuwatanakul, Nophol, Kongpolprom, Napplika, Phoophiboon, Vorakamol, Sriprasart, Thitiwat, Samransamruajkit, Rujipat, Tungsanga, Somkanya, Tiankanon, Kanitha, Lumlertgul, Nuttha, Leelahavanichkul, Asada, Sriphojanart, Tueboon, Tantawichien, Terapong, Thisyakorn, Usa, Chirathaworn, Chintana, Praditpornsilpa, Kearkiat, Tungsanga, Kriang, Eiam-Ong, Somchai, Sitprija, Visith, Kellum, John A., and Srisawat, Nattachai

Published
2020
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18. Investigation of the Molecular Epidemiology and Evolution of Circulating Severe Acute Respiratory Syndrome Coronavirus 2 in Thailand from 2020 to 2022 via Next-Generation Sequencing

Author

Puenpa, Jiratchaya, primary, Sawaswong, Vorthon, additional, Nimsamer, Pattaraporn, additional, Payungporn, Sunchai, additional, Rattanakomol, Patthaya, additional, Saengdao, Nutsada, additional, Chansaenroj, Jira, additional, Yorsaeng, Ritthideach, additional, Suwannakarn, Kamol, additional, and Poovorawan, Yong, additional

Published
2023
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19. Intrahost Genetic Diversity of Dengue Virus in Human Hosts and Mosquito Vectors under Natural Conditions Which Impact Replicative Fitness In Vitro

Author

Nonyong, Patcharaporn, primary, Ekalaksananan, Tipaya, additional, Phanthanawiboon, Supranee, additional, Overgaard, Hans J., additional, Alexander, Neal, additional, Thaewnongiew, Kesorn, additional, Sawaswong, Vorthon, additional, Nimsamer, Pattaraporn, additional, Payungporn, Sunchai, additional, Phadungsombat, Juthamas, additional, Nakayama, Emi E., additional, Shioda, Tatsuo, additional, and Pientong, Chamsai, additional

Published
2023
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20. Effect of a Multispecies Synbiotic Supplementation on Body Composition, Antioxidant Status, and Gut Microbiomes in Overweight and Obese Subjects: A Randomized, Double-Blind, Placebo-Controlled Study

Author

Oraphruek, Piyarat, primary, Chusak, Charoonsri, additional, Ngamukote, Sathaporn, additional, Sawaswong, Vorthon, additional, Chanchaem, Prangwalai, additional, Payungporn, Sunchai, additional, Suantawee, Tanyawan, additional, and Adisakwattana, Sirichai, additional

Published
2023
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22. Exercise Alters FBF1-Regulated Novel-miRNA-1135 Associated with Hydrolethalus Syndrome 1 in Rheumatoid Arthritis: A Preliminary Study

Author

Tansathitaya, Vimolmas, Sarasin, Witchana, Phakham, Tanapati, Sawaswong, Vorthon, Chanchaem, Prangwalai, and Payungporn, Sunchai

Abstract

Background: Hydrolethalus Syndrome 1 (HYDS1) is a rare disorder that occurs commonly in Finnish infants but originates from the mother. This autosomal recessive syndrome is associated with the FBF1, which is usually expressed in the centriole. The FBF1 is an inheritable arthritis disease phenotype that includes rheumatoid arthritis. Several studies have investigated males with FBF1 mutation carriers also related to arthritis diseases, including those under rheumatoid arthritis conditions, which revealed the possibility of conferring the gene mutation to the next generation of offspring. Nonetheless, there are some complications of FBF1 mutation with target miRNAs that can be affected by exercise.Objective: The objective of this study was to evaluate the different exercises that can be utilized to suppress the FBF1 mutation targeted by Novel-rno-miRNAs-1135 as a biomarker and assess the effectiveness of exercise in mitigating the FBF1 mutation.Methods: Four exercise interventional groups were divided into exercise and non-exercise groups. One hundred microliter pristane-induced arthritis (PIA) was injected at the dorsal region of the tails of rodents and introduced to the two PIA interventional groups. On day fortyfive, all animals were euthanized, and total RNA was extracted from the blood samples of rodents, while polymerase chain reaction (PCR) was amplified by using 5-7 primers. Computerization was used for miRNA regulation and analysis of target gene candidates.Results: The novel-rno-miRNA-1135 was downregulated to FBF1 in exercise groups. The exercise was found to have no significant impact in terms of change in novel-rno-miRNA-1135 regulation of FBF1 expression.Conclusion: Exercise has no impact on novel-rno-miRNA-1135 targeted for FBF1 in autosomal recessive disease.

Published
2024
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24. Alteration of gut microbiota during narrowband ultraviolet B therapy: A preliminary study: A preliminary study

Author

Rungjang, Atiya, Meephansan, Jitlada, Payungporn, Sunchai, Sawaswong, Vorthon, Chanchaem, Prangwalai, Pureesrisak, Purit, Wongpiyabovorn, Jongkonnee, Thio, Hok Bing, and Dermatology

Abstract

Gut microbiome dysbiosis is associated with psoriasis development. A relationship between gut microbiota and psoriasis treatment response has been reported. No study has reported the effect of narrowband ultraviolet B (NBUVB) therapy, a standard treatment of psoriasis, on gut microbiota. This study aimed to evaluate gut microbiota change during NBUVB therapy. Stool samples from 22 participants, including 13 patients with chronic plaque psoriasis and nine healthy controls, were recruited. Faecal microbiota composition was analysed using 16S rRNA sequencing before and after NBUVB therapy. Serum 25-OH vitamin D of patients with psoriasis was evaluated simultaneously. The most abundant phyla of gut microbiota in patients with psoriasis were Firmicutes, Bacteroidetes, Proteobacteria and Actinobacteria in all participants. Bilophila, Paraprevotella, Alistipes, Sutterella, Romboutsia, Clostridium sensu stricto and Agathobacter are significantly more enriched in healthy controls. Lactobacillales and Ruminococus torques appeared more enriched after NBUVB treatment in responders but not non-responders. Serum vitamin D levels significantly increased after NBUVB treatment. The present study revealed that gut microbiota altered after NBUVB treatment. The change might be treatment-specific and influence the treatment response.

Published
2022

27. Genome characterization and mutation analysis of human influenza A virus in Thailand

Author

Rattanaburi, Somruthai, primary, Sawaswong, Vorthon, additional, Nimsamer, Pattaraporn, additional, Mayuramart, Oraphan, additional, Sivapornnukul, Pavaret, additional, Khamwut, Ariya, additional, Chanchaem, Prangwalai, additional, Kongnomnan, Kritsada, additional, Suntronwong, Nungruthai, additional, Poovorawan, Yong, additional, and Payungporn, Sunchai, additional

Published
2022
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28. Metagenomic analysis of the gut microbiota in piglets either challenged or not with enterotoxigenic Escherichia coli reveals beneficial effects of probiotics on microbiome composition, resistome, digestive function and oxidative stress responses

Author

Apiwatsiri, Prasert, primary, Pupa, Pawiya, additional, Sirichokchatchawan, Wandee, additional, Sawaswong, Vorthon, additional, Nimsamer, Pattaraporn, additional, Payungporn, Sunchai, additional, Hampson, David J., additional, and Prapasarakul, Nuvee, additional

Published
2022
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30. Skin Microbiota Profiles from Tape Stripping and Skin Biopsy Samples of Patients with Psoriasis Treated with Narrowband Ultraviolet B

Author

Rungjang, Atiya, Meephansan, Jitlada, Payungporn, Sunchai, Sawaswong, Vorthon, Chanchaem, Prangwalai, Pureesrisak, Purit, Wongpiyabovorn, Jongkonnee, Thio, Hok Bing, Rungjang, Atiya, Meephansan, Jitlada, Payungporn, Sunchai, Sawaswong, Vorthon, Chanchaem, Prangwalai, Pureesrisak, Purit, Wongpiyabovorn, Jongkonnee, and Thio, Hok Bing

Abstract

Purpose: Although the pathogenesis of psoriasis involves the dermis, most previous studies collected samples using the swab technique. A recent study examining the microbiomes obtained via both skin biopsies and swabs revealed a significant difference in normal skin. We hypothesized that the microbiome profile of patients with psoriasis from tape stripping and skin biopsy might be different. This study sought to contribute to microbiome research on psoriasis by investigating the changes in the microbiome during narrowband ultraviolet B (NBUVB) therapy by comparing the results from the different sampling techniques of tape stripping and skin biopsy. Patients and Methods: Twenty-three participants, including 14 patients with chronic plaque psoriasis and nine healthy controls, were recruited, and nine patients with psoriasis completed 20-sessions of NBUVB treatment. Skin microbiota from both techniques was analyzed using the 16S rRNA gene at baseline and after treatment. Results: A clear difference was observed between the results from the two sampling techniques. Alpha diversity of the microbiota obtained from tape stripping was higher than that of the microbiota from skin biopsy, whereas beta diversity was clustered into two groups by sampling technique. The microbiome was altered during NBUVB treatment using both sampling techniques. Conclusion: Different sampling techniques resulted in different microbiome profiles in patients with psoriasis. Tape stripping and swabs are feasible procedures and are mostly used in psoriasis and other skin microbiome studies; however, skin biopsy may also expand our understanding of psoriasis and other skin diseases that pathophysiology involves deeper to the dermis or subcutaneous tissue.

Published
2022

31. Skin Microbiota Profiles from Tape Stripping and Skin Biopsy Samples of Patients with Psoriasis Treated with Narrowband Ultraviolet B

Author

Rungjang,Atiya, Meephansan,Jitlada, Payungporn,Sunchai, Sawaswong,Vorthon, Chanchaem,Prangwalai, Pureesrisak,Purit, Wongpiyabovorn,Jongkonnee, Thio,Hok Bing, Rungjang,Atiya, Meephansan,Jitlada, Payungporn,Sunchai, Sawaswong,Vorthon, Chanchaem,Prangwalai, Pureesrisak,Purit, Wongpiyabovorn,Jongkonnee, and Thio,Hok Bing

Abstract

Atiya Rungjang,1 Jitlada Meephansan,1 Sunchai Payungporn,2 Vorthon Sawaswong,2 Prangwalai Chanchaem,2 Purit Pureesrisak,3 Jongkonnee Wongpiyabovorn,4 Hok Bing Thio5 1Division of Dermatology, Chulabhorn International College of Medicine, Thammasat University, Pathum Thani, Thailand; 2The Research Unit of Systems Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; 3Division of Dermatology, Department of Medicine, Rajavithi Hospital, Ministry of Public Health, Bangkok, Thailand; 4Division of Immunology, Department of Microbiology, Faculty of Medicine, Center of Excellence in Immunology and Immune Mediated Diseases, Chulalongkorn University, Bangkok, 10330, Thailand; 5Department of Dermatology, Erasmus University Medical Center, Rotterdam, the NetherlandsCorrespondence: Jitlada Meephansan, Division of Dermatology, Chulabhorn International College of Medicine, Thammasat University, Rangsit Campus, Klong Luang, Pathum Thani, 12120, Thailand, Tel +66 0 2564-4444, ext.1535, Fax +66 0 2564-4440, ext.7594, Email kae_mdcu@yahoo.comPurpose: Although the pathogenesis of psoriasis involves the dermis, most previous studies collected samples using the swab technique. A recent study examining the microbiomes obtained via both skin biopsies and swabs revealed a significant difference in normal skin. We hypothesized that the microbiome profile of patients with psoriasis from tape stripping and skin biopsy might be different. This study sought to contribute to microbiome research on psoriasis by investigating the changes in the microbiome during narrowband ultraviolet B (NBUVB) therapy by comparing the results from the different sampling techniques of tape stripping and skin biopsy.Patients and Methods: Twenty-three participants, including 14 patients with chronic plaque psoriasis and nine healthy controls, were recruited, and nine patients with psoriasis completed 20-sessions of NBUVB treatment. Skin microbiota from both techniques was analyzed using the 1

Published
2022

39. Dengue virus in humans and mosquitoes and their molecular characteristics in northeastern Thailand 2016-2018

Author

Nonyong, Patcharaporn, primary, Ekalaksananan, Tipaya, additional, Phanthanawiboon, Supranee, additional, Aromseree, Sirinart, additional, Phadungsombat, Juthamas, additional, Nakayama, Emi E., additional, Shioda, Tatsuo, additional, Sawaswong, Vorthon, additional, Payungporn, Sunchai, additional, Thaewnongiew, Kesorn, additional, Overgaard, Hans J., additional, Bangs, Michael J., additional, Alexander, Neal, additional, and Pientong, Chamsai, additional

Published
2021
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40. Molecular analysis of mitochrondrial cytb of Pediculus humanus capitis in Thailand revealed potential historical connection with South Asia

Author

Phadungsaksawasdi, Kobpat, primary, Sunantaraporn, Sakone, additional, Seatamanoch, Nirin, additional, Kongdachalert, Switt, additional, Phumee, Atchara, additional, Kraivichian, Kanyarat, additional, Sawaswong, Vorthon, additional, Payungporn, Sunchai, additional, Brownell, Narisa, additional, and Siriyasatien, Padet, additional

Published
2021
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41. Alteration of gut microbiota during narrowband ultraviolet B therapy in psoriasis: A preliminary study.

Author

Rungjang, Atiya, Meephansan, Jitlada, Payungporn, Sunchai, Sawaswong, Vorthon, Chanchaem, Prangwalai, Pureesrisak, Purit, Wongpiyabovorn, Jongkonnee, and Thio, Hok Bing

Subjects
GUT microbiome, PSORIASIS, VITAMIN D, LACTIC acid bacteria, DYSBIOSIS
Abstract

Gut microbiome dysbiosis is associated with psoriasis development. A relationship between gut microbiota and psoriasis treatment response has been reported. No study has reported the effect of narrowband ultraviolet B (NBUVB) therapy, a standard treatment of psoriasis, on gut microbiota. This study aimed to evaluate gut microbiota change during NBUVB therapy. Stool samples from 22 participants, including 13 patients with chronic plaque psoriasis and nine healthy controls, were recruited. Faecal microbiota composition was analysed using 16S rRNA sequencing before and after NBUVB therapy. Serum 25‐OH vitamin D of patients with psoriasis was evaluated simultaneously. The most abundant phyla of gut microbiota in patients with psoriasis were Firmicutes, Bacteroidetes, Proteobacteria and Actinobacteria in all participants. Bilophila, Paraprevotella, Alistipes, Sutterella, Romboutsia, Clostridium sensu stricto and Agathobacter are significantly more enriched in healthy controls. Lactobacillales and Ruminococus torques appeared more enriched after NBUVB treatment in responders but not non‐responders. Serum vitamin D levels significantly increased after NBUVB treatment. The present study revealed that gut microbiota altered after NBUVB treatment. The change might be treatment‐specific and influence the treatment response. [ABSTRACT FROM AUTHOR]

Published
2022
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43. Corrigendum: Candida Administration Worsens Cecal Ligation and Puncture-Induced Sepsis in Obese Mice Through Gut Dysbiosis Enhanced Systemic Inflammation, Impact of Pathogen-Associated Molecules From Gut Translocation and Saturated Fatty Acid

Author

Panpetch, Wimonrat, primary, Sawaswong, Vorthon, additional, Chanchaem, Prangwalai, additional, Ondee, Thunnicha, additional, Dang, Cong Phi, additional, Payungporn, Sunchai, additional, Tumwasorn, Somying, additional, and Leelahavanichkul, Asada, additional

Published
2020
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45. Candida Administration Worsens Cecal Ligation and Puncture-Induced Sepsis in Obese Mice Through Gut Dysbiosis Enhanced Systemic Inflammation, Impact of Pathogen-Associated Molecules From Gut Translocation and Saturated Fatty Acid

Author

Panpetch, Wimonrat, primary, Sawaswong, Vorthon, additional, Chanchaem, Prangwalai, additional, Ondee, Thunnicha, additional, Dang, Cong Phi, additional, Payungporn, Sunchai, additional, Tumwasorn, Somying, additional, and Leelahavanichkul, Asada, additional

Published
2020
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46. Endotoxemia and circulating bacteriome in severe COVID-19 patients

Author

Sirivongrangson, Phatadon, primary, Kulvichit, Win, additional, Payungporn, Sunchai, additional, Pisitkun, Trairak, additional, Chindamporn, Ariya, additional, Peerapornratana, Sadudee, additional, Pisitkun, Prapaporn, additional, Chitcharoen, Suwalak, additional, Sawaswong, Vorthon, additional, Worasilchai, Navaporn, additional, Kampunya, Sarinya, additional, Putcharoen, Opass, additional, Thawitsri, Thammasak, additional, Leelayuwatanakul, Nophol, additional, Kongpolprom, Napplika, additional, Phoophiboon, Vorakamol, additional, Sriprasart, Thitiwat, additional, Samransamruajkit, Rujipat, additional, Tungsanga, Somkanya, additional, Tiankanon, Kanitha, additional, Lumlertgul, Nuttha, additional, Leelahavanichkul, Asada, additional, Sriphojanart, Tueboon, additional, Tantawichien, Terapong, additional, Thisyakorn, Usa, additional, Chirathaworn, Chintana, additional, Praditpornsilpa, Kearkiat, additional, Tungsanga, Kriang, additional, Eiam-Ong, Somchai, additional, Sitprija, Visith, additional, Kellum, John A., additional, and Srisawat, Nattachai, additional

Published
2020
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48. Allelic Diversity and Geographical Distribution of the Gene Encoding Plasmodium falciparum Merozoite Surface Protein-3 in Thailand

Author

Sawaswong, Vorthon, Simpalipan, Phumin, Siripoon, Napaporn, Harnyuttanakorn, Pongchai, and Pattaradilokrat, Sittiporn

Subjects
Polymorphism, Genetic, Genotype, Plasmodium falciparum, Protozoan Proteins, Genetic Variation, Antigens, Protozoan, Thailand, molecular epidemiology, genotyping, Gene Frequency, parasitic diseases, Humans, Original Article, Malaria, Falciparum, merozoite surface protein-3
Abstract

Merozoite surface proteins (MSPs) of malaria parasites play critical roles during the erythrocyte invasion and so are potential candidates for malaria vaccine development. However, because MSPs are often under strong immune selection, they can exhibit extensive genetic diversity. The gene encoding the merozoite surface protein-3 (MSP-3) of Plasmodium falciparum displays 2 allelic types, K1 and 3D7. In Thailand, the allelic frequency of the P. falciparum msp-3 gene was evaluated in a single P. falciparum population in Tak at the Thailand and Myanmar border. However, no study has yet looked at the extent of genetic diversity of the msp-3 gene in P. falciparum populations in other localities. Here, we genotyped the msp-3 alleles of 63 P. falciparum samples collected from 5 geographical populations along the borders of Thailand with 3 neighboring countries (Myanmar, Laos, and Cambodia). Our study indicated that the K1 and 3D7 alleles coexisted, but at different proportions in different Thai P. falciparum populations. K1 was more prevalent in populations at the Thailand-Myanmar and Thailand-Cambodia borders, whilst 3D7 was more prevalent at the Thailand-Laos border. Global analysis of the msp-3 allele frequencies revealed that proportions of K1 and 3D7 alleles of msp-3 also varied in different continents, suggesting the divergence of malaria parasite populations. In conclusion, the variation in the msp-3 allelic patterns of P. falciparum in Thailand provides fundamental knowledge for inferring the P. falciparum population structure and for the best design of msp-3 based malaria vaccines.

Published
2015

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