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Rodpai R, Sanpool O, Sadaow L, Boonroumkaew P, Intapan PM, Maleewong W, Yingklang M, Janwan P, Vaisusuk K, Chatan W, Piratae S, Thanchomnang T. Molecular identification and genetic diversity of zoonotic hookworm infections in domestic dogs from northeastern, Thailand. Parasitol Res 2024; 123:115. [PMID: 38285129 DOI: 10.1007/s00436-024-08134-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 01/18/2024] [Indexed: 01/30/2024]
Abstract
Hookworm infections remain a significant public health concern in tropical and subtropical regions, including Thailand. This study investigated the species and genetic diversity of hookworm infections in domestic dogs from northeastern Thailand. The molecular analysis focused on amplifying and sequencing specific regions of ribosomal RNA genes (ITS1-5.8S-ITS2 region) and the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene in hookworm larvae recovered from 21 domestic dog stool samples. Among 21 larvae (one larva per infected dog) analyzed, 14 had sequences identical to Ancylostoma caninum, and 7 showed sequences almost identical to Ancylostoma ceylanicum. Phylogenetic analysis of cox1 sequences placed A. caninum and A. ceylanicum in separate clades. The median-joining network of A. caninum cox1 sequences from Thailand showed high haplotype diversity and belonged to the same cluster as sequences from Australia while forming separate clusters from those of A. caninum samples from the USA. The available published A. ceylanicum cox1 sequences (n = 33), in combination with seven sequences in the present study, represented 15 haplotypes distributed among three clusters. Interestingly, A. ceylanicum sequences from dogs and humans shared the same haplotypes. These findings are crucial for recognizing the potential for zoonotic transmission, highlighting the necessity for targeted control measures, and increasing awareness among pet owners and healthcare professionals to mitigate the risk of hookworm transmission to humans.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Pewpan M Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | | | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80160, Thailand
| | - Kotchaphon Vaisusuk
- Department of Veterinary Technology and Veterinary Nursing, Faculty of Agricultural Technology, Rajabhat Maha Sarakham University, Maha Sarakham, 44000, Thailand
| | - Wasupon Chatan
- Faculty of Veterinary Sciences, Mahasarakham University, Maha Sarakham, 44000, Thailand
| | - Supawadee Piratae
- Faculty of Veterinary Sciences, Mahasarakham University, Maha Sarakham, 44000, Thailand
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Boonroumkaew P, Sadaow L, Janwan P, Rodpai R, Sanpool O, Buadee P, Suprom C, Thanchomnang T, Intapan PM, Maleewong W. Improved diagnostic sensitivity of human strongyloidiasis using point-of-care mixed recombinant antigen-based immunochromatography. Parasite 2023; 30:60. [PMID: 38099622 PMCID: PMC10723528 DOI: 10.1051/parasite/2023063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Accepted: 11/25/2023] [Indexed: 12/17/2023] Open
Abstract
Strongyloidiasis is a neglected tropical disease that can cause fatal complications due to hyperinfection and disseminated strongyloidiasis in immunocompromised patients. We used two Strongyloides stercoralis recombinant antigenic proteins, L3NieAg.01 (NIE) and IgG-immunoreactive antigen (SsIR), to develop the recombinant antigen-based immunochromatography test (ICT) kit. We constructed and compared kits using either the NIE (NIE ICT kit) or the SsIR (SsIR ICT kit) antigens and a kit using a mixture of both (NIE-SsIR ICT kit) for detection of anti-Strongyloides IgG antibody in human serum samples. Serum samples from normal healthy individuals (Group I, n = 40), proven strongyloidiasis patients (Group II, n = 100), and those with other parasitic infections (Group III, n = 154) were evaluated. Sensitivity and specificity were 81.0% and 84.0% for the NIE ICT kit, 89.0% and 83.5% for the SsIR ICT kit, and 95.0% and 90.2% for the NIE-SsIR ICT kit, respectively. The NIE-SsIR ICT kit provided the best diagnostic results; it can supplement stool examination for clinical diagnosis and can be used to screen for asymptomatic S. stercoralis infection in people at risk in endemic areas. The NIE-SsIR ICT kit can also be used in large-scale sero-epidemiological investigations in endemic areas without the need for additional facilities or ancillary supplies.
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Affiliation(s)
- Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Penchom Janwan
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
- Department of Medical Technology, School of Allied Health Sciences, Walailak University 80161 Nakhon Si Thammarat Thailand
- Hematology and Transfusion Science Research Center, Walailak University 80161 Nakhon Si Thammarat Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Punyisa Buadee
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Chanida Suprom
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
- Faculty of Medicine, Mahasarakham University 44000 Maha Sarakham Thailand
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University 40002 Khon Kaen Thailand
- Mekong Health Science Research Institute, Khon Kaen University 40002 Khon Kaen Thailand
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Sadaow L, Boonroumkaew P, Rodpai R, Janwan P, Sanpool O, Thanchomnang T, Morishima Y, Sato MO, Sako Y, Kobayashi K, Iwai M, Maleewong W, Yamasaki H, Intapan PM. Development and evaluation of an immunochromatography-based point-of-care test kit for a rapid diagnosis of human cysticercosis. Food Waterborne Parasitol 2023; 33:e00211. [PMID: 37868190 PMCID: PMC10589370 DOI: 10.1016/j.fawpar.2023.e00211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Revised: 09/26/2023] [Accepted: 10/06/2023] [Indexed: 10/24/2023] Open
Abstract
Human cysticercosis is a life-threatening zoonotic disease caused by infection with larvae (cysticerci) of the pork tapeworm, Taenia solium. This can affect the nervous system causing chronic headache and intracranial hypertension, potentially leading to epileptic seizures and paralysis. The disease is found in developing countries, especially in Southeast and South Asia, Sub-Saharan Africa, and Central and South America where porcine cysticercosis is endemic and people have a habit of eating undercooked pork. An immunochromatography-based test (ICT) kit, using T. solium cyst fluid as antigen, was manufactured to detect anti-T. solium IgG antibodies in human serum. To evaluate the kit, we used 187 serum samples including 24 from proven/confirmed cysticercosis cases, 133 from cases with other parasitosis and 30 healthy controls. Diagnostic efficiencies were calculated. The sensitivity, specificity, and accuracy were 83.3%, 92.0%, and 90.9%, respectively. Moreover, the ICT was positive before treatment but became negative after treatment, implying that this kit is also useful for follow-up monitoring post-treatment. In conclusion, we have successfully developed and present preliminary evaluation of an easy-to-handle rapid diagnostic tool for human cysticercosis in the form of an ICT platform using as antigen fluid from T. solium cysticerci.
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Affiliation(s)
- Lakkhana Sadaow
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Boonroumkaew
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Rutchanee Rodpai
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Penchom Janwan
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Oranuch Sanpool
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand
| | - Yasuyuki Morishima
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Marcello Otake Sato
- Division of Global Environment Parasitology, Faculty of Medical Technology, Niigata University of Pharmacy and Medical and Life Sciences, Niigata 956-8603, Japan
| | - Yasuhito Sako
- Division of Parasitology, Department of Infectious Diseases, Asahikawa Medical University, Asahikawa 078-8510, Japan
| | - Kaoru Kobayashi
- Division of Planning and Development, Adtec Inc., Oita 879-0453, Japan
| | - Misako Iwai
- Division of Planning and Development, Adtec Inc., Oita 879-0453, Japan
| | - Wanchai Maleewong
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Pewpan M. Intapan
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
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Thanchomnang T, Rodpai R, Thinnabut K, Boonroumkaew P, Sadaow L, Tangkawanit U, Sanpool O, Janwan P, Intapan PM, Maleewong W. Characterization of the bacterial microbiota of cattle ticks in northeastern Thailand through 16S rRNA amplicon sequencing. Infect Genet Evol 2023; 115:105511. [PMID: 37820843 DOI: 10.1016/j.meegid.2023.105511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 09/30/2023] [Accepted: 10/08/2023] [Indexed: 10/13/2023]
Abstract
Ticks are vectors of a variety of pathogens that can infect humans and animals. Ticks also harbor non-pathogenic microbiota. This study characterized the microbiota of the ticks infesting beef cattle in Thailand. Two species of ticks; Rhipicephalus microplus (n = 15) and Haemaphysalis bispinosa (n = 5), were collected in seven provinces in northeastern Thailand. Microbial community profile of ticks was examined based on sequences of the V3-V4 region of 16S rRNA gene. Proteobacteria (Pseudomonadota) was the most abundant phylum, followed by Firmicutes (Bacillota), and Actinobacteriota. Coxiella-like endosymbiont was the most abundant bacterial taxon overall (49% of sequence reads), followed by Anaplasma (8.5%), Corynebacterium (5.5%), Ehrlichia (3.9%), and Castellaniella (3.4%). Co-infections of the pathogenic bacteria Ehrlichia and Anaplasma were detected in 19/20 (95%) female ticks. The tick with the lowest number of bacteria had the lowest abundance of the Coxiella-like endosymbiont, and the pathogenic bacteria Anaplasma and Ehrlichia were absent. This study provides baseline information of the microbiota of cattle ticks in northeastern Thailand, suggesting that ticks carry a few dominant bacterial taxa that are primarily non-pathogenic but can co-occur with pathogenic microorganisms. The information obtained is useful for monitoring disease outbreaks in the future and informing prevention and control strategies against cattle tick-borne diseases.
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Affiliation(s)
- Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand
| | - Rutchanee Rodpai
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Kanchana Thinnabut
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Boonroumkaew
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Lakkhana Sadaow
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Ubon Tangkawanit
- Department of Entomology and Plant Pathology, Faculty of Agriculture, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranuch Sanpool
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80160, Thailand
| | - Pewpan M Intapan
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Wanchai Maleewong
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand; Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.
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Boonroumkaew P, Rodpai R, Saeung A, Aupalee K, Saingamsook J, Poolphol P, Sadaow L, Sanpool O, Janwan P, Thanchomnang T, Intapan PM, Maleewong W. Bacterial community structure of Anopheles hyrcanus group, Anopheles nivipes, Anopheles philippinensis, and Anopheles vagus from a malaria-endemic area in Thailand. PLoS One 2023; 18:e0289733. [PMID: 37590198 PMCID: PMC10434920 DOI: 10.1371/journal.pone.0289733] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 07/25/2023] [Indexed: 08/19/2023] Open
Abstract
Bacterial content of mosquitoes has given rise to the development of innovative tools that influence and seek to control malaria transmission. This study identified the bacterial microbiota in field-collected female adults of the Anopheles hyrcanus group and three Anopheles species, Anopheles nivipes, Anopheles philippinensis, and Anopheles vagus, from an endemic area in the southeastern part of Ubon Ratchathani Province, northeastern Thailand, near the Lao PDR-Cambodia-Thailand border. A total of 17 DNA libraries were generated from pooled female Anopheles abdomen samples (10 abdomens/ sample). The mosquito microbiota was characterized through the analysis of DNA sequences from the V3-V4 regions of the 16S rRNA gene, and data were analyzed in QIIME2. A total of 3,442 bacterial ASVs were obtained, revealing differences in the microbiota both within the same species/group and between different species/group. Statistical difference in alpha diversity was observed between An. hyrcanus group and An. vagus and between An. nivipes and An. vagus, and beta diversity analyses showed that the bacterial community of An. vagus was the most dissimilar from other species. The most abundant bacteria belonged to the Proteobacteria phylum (48%-75%) in which Pseudomonas, Serratia, and Pantoea were predominant genera among four Anopheles species/group. However, the most significantly abundant genus observed in each Anopheles species/group was as follows: Staphylococcus in the An. hyrcanus group, Pantoea in the An. nivipes, Rosenbergiella in An. philippinensis, and Pseudomonas in An. vagus. Particularly, Pseudomonas sp. was highly abundant in all Anopheles species except An. nivipes. The present study provides the first study on the microbiota of four potential malaria vectors as a starting step towards understanding the role of the microbiota on mosquito biology and ultimately the development of potential tools for malaria control.
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Affiliation(s)
- Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Atiporn Saeung
- Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Kittipat Aupalee
- Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Jassada Saingamsook
- Center of Insect Vector Study, Department of Parasitology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Petchaboon Poolphol
- The Office of Disease Prevention and Control Region 10th, Ubon Ratchathani, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Tongjit Thanchomnang
- Faculty of Medicine, Mahasarakham University, Kham Riang, Maha Sarakham, Thailand
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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Rodpai R, Boonroumkaew P, Sadaow L, Sanpool O, Janwan P, Thanchomnang T, Intapan PM, Maleewong W. Microbiome Composition and Microbial Community Structure in Mosquito Vectors Aedes aegypti and Aedes albopictus in Northeastern Thailand, a Dengue-Endemic Area. Insects 2023; 14:184. [PMID: 36835753 PMCID: PMC9961164 DOI: 10.3390/insects14020184] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/08/2023] [Accepted: 02/11/2023] [Indexed: 06/18/2023]
Abstract
Bacterial content in mosquito larvae and adults is altered by dynamic interactions during life and varies substantially in variety and composition depending on mosquito biology and ecology. This study aimed to identify the microbiota in Aedes aegypti and Aedes albopictus and in water from their breeding sites in northeastern Thailand, a dengue-endemic area. Bacterial diversity in field-collected aquatic larvae and subsequently emerged adults of both species from several locations were examined. The microbiota was characterized based on analysis of DNA sequences from the V3-V4 region of the 16S rRNA gene and exhibited changes during development, from the mosquito larval stage to the adult stage. Aedes aegypti contained a significantly higher number of bacterial genera than did Ae. albopictus, except for the genus Wolbachia, which was present at significantly higher frequencies in male Ae. albopictus (p < 0.05). Our findings also indicate likely transstadial transmission from larva to adult and give better understanding of the microbial diversity in these mosquitoes, informing future control programs against mosquito-borne diseases.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | | | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
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Rodpai R, Sanpool O, Janwan P, Boonroumkaew P, Sadaow L, Thanchomnang T, Intapan PM, Maleewong W. Gut microbiota diversity in human strongyloidiasis differs little in two different regions in endemic areas of Thailand. PLoS One 2022; 17:e0279766. [PMID: 36584127 PMCID: PMC9803247 DOI: 10.1371/journal.pone.0279766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 12/13/2022] [Indexed: 12/31/2022] Open
Abstract
Human gastrointestinal helminthic infections have a direct and/or indirect effect on the composition of the host gut microbial flora. Here, we investigated the effect of infection with a soil-transmitted intestinal nematode, Strongyloides stercoralis, on the gut microbiota of the human host. We also investigated whether composition of the microbiota in infected persons might vary across endemic regions. Fecal samples were obtained from volunteers from two areas endemic for strongyloidiasis, Khon Kaen Province in northeastern Thailand and Nakhon Si Thammarat Province in southern Thailand. Samples from Khon Kaen were from infected (SsNE) and uninfected (NegNE) individuals. Similarly, samples from the latter province were from infected (SsST) and uninfected (NegST) individuals. DNA sequences of the V3-V4 regions of the bacterial 16S rRNA gene were obtained from the fecal samples. No statistical difference in alpha diversity between groups in terms of richness or diversity were found. Statistical difference in beta diversity was observed only between NegNE and NegST. Some significant differences in species abundance were noted between geographical isolates. The SsNE group had a higher abundance of Tetragenococcus holophilus than did the SsST group, whereas Bradyrhizobium sp. was less abundant in the SsNE than the SsST group. For the uninfected groups, the NegNE had a higher abundance of T. holophilus than the NegST group. Our data showed that S. stercoralis infection leads to only minor alterations in the relative abundance of individual bacterial species in the human gut: no detectable effect was observed on community structure and diversity.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Penchom Janwan
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Faculty of Medicine, Mahasarakham University, Mahasarakham, Thailand
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
- * E-mail:
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Sangwalee W, Norkaew J, Inthachak S, Janwan P, Rodpai R, Sanpool O, Sadaow L, Boonroumkaew P, Intapan PM, Maleewong W, Thanchomnang T. Prevalence of intestinal parasitic infections and genetic differentiation of Strongyloides stercoralis among migrant workers from Myanmar, Lao PDR and Cambodia in northeastern Thailand. PLoS One 2022; 17:e0279754. [PMID: 36584196 PMCID: PMC9803317 DOI: 10.1371/journal.pone.0279754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 12/13/2022] [Indexed: 01/01/2023] Open
Abstract
Intestinal parasitic infections (IPIs) remain a public-health problem worldwide, including in countries of the Lower Mekong subregion. Increases in human migration from neighboring countries might cause reemerging parasitic infections, leading to spread of parasites in the landscape. Here, we conducted a cross-sectional study to identify the prevalence of IPIs in migrant workers from Myanmar, Lao PDR, and Cambodia who were dwelling in Nakhon Ratchasima Province, northeastern Thailand. The identification of Strongyloides species and genetic differentiation of worms from migrant workers with different countries of origin was also assessed. Fresh stool samples were collected from 338 migrant workers and examined for evidence of IPIs using agar plate culture (APC) and the formalin-ethyl acetate concentration technique (FECT). Among those nine samples positive for nematodes by APC, the Strongyloides or hookworm species present was confirmed using the polymerase chain reaction (PCR) followed by DNA sequencing. This revealed eight cases of Strongyloides stercoralis infection and one of Necator americanus. Fifty-one out of 338 individuals (15.09%) were positive for IPIs using FECT and APC. Eggs of Opisthorchis-like flukes were the most common parasite (11.83% of samples), followed by S. stercoralis (2.37%), Entamoeba coli (1.50%), hookworm (0.89%), Taenia sp. (0.60%) and Hymenolepis nana (0.30%). The genetic differentiation of S. stercoralis recovered from migrant workers with different countries of origin was analyzed. Specimens of S. stercoralis isolated from workers from Lao PDR, Cambodia and Myanmar were genetically similar to those sequenced from Thailand. However, there were population-genetic differences between S. stercoralis from these Southeast Asian countries and other regions of the world. This study demonstrated that IPIs were prevalent in migrant workers in the northeastern region of Thailand. Our findings provided molecular confirmation of the presence of S. stercoralis and explored the genetic differentiation of S. stercoralis from those infected migrant workers. An effective anti-parasitic drug should be provided for migrant workers and its administration enforced.
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Affiliation(s)
- Wararat Sangwalee
- Faculty of Public Health, Vongchavalitkul University, Nakhon Ratchasima, Thailand
| | - Jun Norkaew
- Faculty of Public Health, Vongchavalitkul University, Nakhon Ratchasima, Thailand
| | - Sengchoy Inthachak
- Faculty of Education, Vongchavalitkul University, Nakhon Ratchasima, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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9
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Sadaow L, Rodpai R, Janwan P, Boonroumkaew P, Sanpool O, Thanchomnang T, Yamasaki H, Ittiprasert W, Mann VH, Brindley PJ, Maleewong W, Intapan PM. An Innovative Test for the Rapid Detection of Specific IgG Antibodies in Human Whole-Blood for the Diagnosis of Opisthorchis viverrini Infection. Trop Med Infect Dis 2022; 7:tropicalmed7100308. [PMID: 36288049 PMCID: PMC9607866 DOI: 10.3390/tropicalmed7100308] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 10/10/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Chronic human liver fluke infections caused by Opisthorchis viverrini and Clonorchis sinensis can last for decades and cause liver and biliary diseases, including life-threatening pathology prior to cholangiocarcinoma (CCA). CCA generally has a poor prognosis. Serological diagnosis can support parasitological examination in diagnosing disease and screening for the risk of CCA. Here, we present an improved and innovative lateral flow immunochromatographic test (ICT) kit that uses whole-blood samples (WBS) rather than serum to diagnose human opisthorchiasis, which also successfully diagnosed human clonorchiasis. This ICT includes a soluble worm extract of O. viverrini adults and colloidal-gold-labeled conjugates of the IgG antibody to evaluate the diagnostic values with simulated WBS (n = 347). Simulated WBS were obtained by the spiking infection sera with red blood cells. The diagnostic sensitivity, specificity, positive and negative predictive values, and accuracy for detecting opisthorchiasis were 95.5%, 87.0%, 80.5%, 97.2%, and 90.1%, respectively. For clonorchiasis, these findings were 85.7%, 87.0%, 53.6%, 97.2%, and 86.8%, respectively. Combined for both diseases, they were 93.2%, 87.0%, 84.0%, 94.6%, and 89.6%, respectively. The ICT kit can possibly replace the ICT platforms for antibody detection in serum samples in field surveys in remote areas where sophisticated equipment is not available.
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Affiliation(s)
- Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Penchom Janwan
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Wannaporn Ittiprasert
- Department of Microbiology, Immunology and Tropical Medicine, Research Center for Neglected Diseases of Poverty, School of Medicine and Health Science, George Washington University, Washington, DC 20052, USA
| | - Victoria H. Mann
- Department of Microbiology, Immunology and Tropical Medicine, Research Center for Neglected Diseases of Poverty, School of Medicine and Health Science, George Washington University, Washington, DC 20052, USA
| | - Paul J. Brindley
- Department of Microbiology, Immunology and Tropical Medicine, Research Center for Neglected Diseases of Poverty, School of Medicine and Health Science, George Washington University, Washington, DC 20052, USA
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
- Correspondence: ; Tel.: +66-4363434
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10
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Janwan P, Sadaow L, Rodpai R, Yamasaki H, Luvira V, Sukeepaisarnjaroen W, Kitkhuandee A, Paonariang K, Sanpool O, Boonroumkaew P, Thanchomnang T, Mita T, Intapan PM, Maleewong W. Evaluation of total immunoglobulin G and subclass antibodies in an enzyme-linked immunosorbent assay for serodiagnosis of human amebic liver abscess. PeerJ 2022; 10:e14085. [PMID: 36196402 PMCID: PMC9527022 DOI: 10.7717/peerj.14085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 08/29/2022] [Indexed: 01/20/2023] Open
Abstract
Background Amebic liver abscess (ALA) caused by Entamoeba histolytica is usually diagnosed based on its clinical symptoms, medical imaging abnormalities of the liver, and serological tests, the most common being the enzyme-linked immunosorbent assay (ELISA). For more than three decades, no investigation has evaluated the diagnostic performance of immunoglobulin G (IgG) subclasses in the serodiagnosis of ALA. Herein, we assessed the efficiencies of anti-amebic IgG and IgG subclasses for diagnosing ALA. Methods A serological ELISA-based test was performed to assess its diagnostic performance using a total of 330 serum samples from ALA patients (n = 14), healthy individuals (n = 40), and patients with other diseases (n = 276). Results ELISA targeting the total IgG antibody to E. histolytica antigen exhibited 100% sensitivity 95% CI [76.8-100.0] and 97.8% specificity 95% CI [95.5-99.1], whereas the assay targeting IgG1 showed the same sensitivity (100% 95% CI [76.8-100.0]) and a slightly higher specificity (99.1% 95% CI [97.3-99.8]). The other IgG subclasses (IgG2, IgG3, and IgG4) displayed a lower sensitivity and specificity. The sensitivity and specificity did not significantly differ between tests measuring total IgG and IgG1 (Exact McNemar's test; p > 0.05), with a concordance of 98.2%, represented by a Cohen's kappa of 0.83 (p < 0.001), indicating almost perfect agreement. Conclusion ELISA targeting IgG1 can provide valuable information to clinicians in differentiating ALA from other parasitic diseases, cancers, cirrhosis, and viral hepatitis. However, enzyme-conjugated anti-human total IgG is cheaper than anti-human IgG subclasses. Therefore, we suggest that total IgG-based ELISA is sufficient for the routine serodiagnosis of human ALA and possibly other clinical manifestations of invasive amebiasis.
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Affiliation(s)
- Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand,Hematology and Transfusion Science Research Center, Walailak University, Nakhon Si Thammarat, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan,Department of Tropical Medicine and Parasitology, Juntendo University School of Medicine, Tokyo, Japan
| | - Vor Luvira
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Amnat Kitkhuandee
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Krisada Paonariang
- Department of Surgery, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand,Faculty of Medicine, Mahasarakham University, Maha Sarakham, Thailand
| | - Toshihiro Mita
- Department of Tropical Medicine and Parasitology, Juntendo University School of Medicine, Tokyo, Japan
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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11
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Somsap Y, Boonroumkaew P, Somsap A, Rodpai R, Sadaow L, Sanpool O, Maleewong W, Intapan PM. Ocular Dirofilariasis Case in Thailand Confirmed by Molecular Analysis to Be Caused by Dirofilaria immitis. Am J Trop Med Hyg 2022; 106:204-207. [PMID: 34634776 PMCID: PMC8733484 DOI: 10.4269/ajtmh.21-0764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 08/22/2021] [Indexed: 01/03/2023] Open
Abstract
A rare ocular dirofilariasis case along with the clinical characteristics, treatment, and outcome is reported. A whitish roundworm (10.6 cm long and 0.5 mm width) emerged from the pterygium, a triangular tissue growth on the cornea of the eye, of a male patient. The worm had a rounded anterior part, mouth without lips, smooth cuticular surface, and short rounded posterior tail with spicules: these features suggested that it was a male Dirofilaria sp. Molecular identification confirmed that the worm belonged to Dirofilaria immitis. This is the first molecular confirmation that D. immitis is a causative agent of ocular dirofilariasis in Thailand: dirofilariasis is a newly emerging zoonotic disease. Physicians should be alert to zoonotic filarial worms and knowledgeable about treatment of this disease.
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Affiliation(s)
- Yuwadee Somsap
- Department of Ophthalmology, Chumphae Hospital, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Attawit Somsap
- Department of Otolaryngology, Chumphae Hospital, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Pewpan M. Intapan
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand;,Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand;,Address correspondence to Pewpan M. Intapan, Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand. E-mail:
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12
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Rodpai R, Sadaow L, Sanpool O, Boonroumkaew P, Thanchomnang T, Laymanivong S, Janwan P, Limpanont Y, Chusongsang P, Ohmae H, Yamasaki H, Lv Z, Intapan PM, Maleewong W. Development and Accuracy Evaluation of Lateral Flow Immunoassay for Rapid Diagnosis of Schistosomiasis Mekongi in Humans. Vector Borne Zoonotic Dis 2022; 22:48-54. [PMID: 34981973 DOI: 10.1089/vbz.2021.0053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023] Open
Abstract
Schistosoma mekongi infection is endemic in countries along the Mekong River and certain of its tributaries in the lower Mekong basin, especially in Lao People's Democratic Republic and Cambodia. Diagnosis of schistosomiasis is crucial before treatment and epidemiological surveys before and/or after an intervention, such as a mass drug administration. A newly developed immunochromatographic test (ICT) for the diagnosis of schistosomiasis mekongi, based on antiparasite antibody detection in human sera, was evaluated. The schistosomiasis mekongi-ICT (Smk-ICT) strip was developed using somatic antigen from adult S. mekongi. In total, 209 serum samples were examined, including 14 from parasitologically proven schistosomiasis mekongi patients, 30 from schistosomiasis japonica patients, other parasitosis (n = 135), and healthy volunteers (n = 30) from areas not endemic for S. mekongi. Eleven schistosomiasis mekongi samples were positive according to the Smk-ICT, whereas all healthy control samples were negative. Cross-reactions with paragonimiasis heterotremus, sparganosis, trichinellosis, and taeniasis saginata samples were observed at 2.4% (4/165). The diagnostic sensitivity, specificity, positive predictive value, negative predictive value, and accuracy were 78.6% (95% confidence interval [CI] 49.2-95.3), 97.6% (95% CI 93.9-99.3), 73.3% (95% CI 44.9-92.2), 98.2% (95% CI 94.7-99.6), and 96.1% (95% CI 92.1-98.4), respectively. The Smk-ICT kit might be useful to assess the prevalence of disease before establishing transmission control and mass deworming campaigns in countries in the Mekong River subregion.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Faculty of Medicine, Mahasarakham University, Mahasarakham, Thailand
| | - Sakhone Laymanivong
- Centre of Malariology, Parasitology and Entomology, Ministry of Health, Vientiane, Lao PDR
| | - Penchom Janwan
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Yanin Limpanont
- Applied Malacology Laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Phiraphol Chusongsang
- Applied Malacology Laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Hiroshi Ohmae
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan
- Department of Tropical Medicine and Parasitology, Dokkyo Medical University, Tochigi, Japan
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan
| | - Zhiyue Lv
- Key Laboratory of Tropical Disease Control (Sun Yat-Sen University), Ministry of Education, Guangzhou, China
- NHC Key Laboratory of Control of Tropical Diseases, Hainan Medical University, Haikou, China
- Department of Laboratory Medicine, Hainan Affiliated Hospital, Hainan Medical University, Haikou, China
| | - Pewpan M Intapan
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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13
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Thanchomnang T, Sadaow L, Sanpool O, Intapan PM, Rodpai R, Boonroumkaew P, Janwan P, Tourtip S, Maleewong W. Development of an immunochromatographic point-of-care test for detection of IgG antibody in serodiagnosis of human trichinellosis. Int J Infect Dis 2021; 111:148-153. [PMID: 34461253 DOI: 10.1016/j.ijid.2021.08.056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/22/2021] [Accepted: 08/23/2021] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE Trichinellosis is a globally distributed food-borne parasitic disease. Initially, diagnosis is usually made based on clinical signs, symptoms, and history of eating raw or undercooked meat. In the present study, an immunochromatographic test (ICT) kit was developed to diagnose trichinellosis by detecting IgG antibodies in sera of infected humans. METHODS Somatic extract from Trichinella spiralis larvae was used as the antigen for the ICT kit development. Diagnostic efficacy was evaluated using human serum samples from proven trichinellosis patients, healthy persons, and those with other parasitic infections. RESULTS The diagnostic sensitivity, specificity, positive and negative predictive values and accuracy of the ICT kit were 100.0% (95%; CI 88.8 to 100.0%), 92.5% (95% CI; 86.9 to 96.2%), 73.8% (95% CI; 58.0 to 86.1%), 100.0% (95% CI; 97.3 to 100.0%) and 93.8% (95% CI; 89.2 to 96.9%), respectively. CONCLUSIONS This ICT diagnostic kit can be used as a testing tool for human trichinellosis. This test should permit rapid detection of infection to enable prompt anthelminthic treatment. It can also be used for retrospective diagnoses and field surveys based at laboratories where sophisticated equipment is lacking.
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Affiliation(s)
- Tongjit Thanchomnang
- Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Pewpan M Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Somjintana Tourtip
- Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand.
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14
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Rodpai R, Sanpool O, Thanchomnang T, Laoraksawong P, Sadaow L, Boonroumkaew P, Wangwiwatsin A, Wongkham C, Laummaunwai P, Ittiprasert W, Brindley PJ, Intapan PM, Maleewong W. Exposure to dexamethasone modifies transcriptomic responses of free-living stages of Strongyloides stercoralis. PLoS One 2021; 16:e0253701. [PMID: 34181669 PMCID: PMC8238218 DOI: 10.1371/journal.pone.0253701] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/10/2021] [Indexed: 12/15/2022] Open
Abstract
Hyperinfection and disseminated infection by the parasitic nematode Strongyloides stercoralis can be induced by iatrogenic administration of steroids and immunosuppression and lead to an elevated risk of mortality. Responses of free-living stages of S. stercoralis to the therapeutic corticosteroid dexamethasone (DXM) were investigated using RNA-seq transcriptomes of DXM-treated female and male worms. A total of 17,950 genes representing the transcriptome of these free-living adult stages were obtained, among which 199 and 263 were differentially expressed between DXM-treated females and DXM-treated males, respectively, compared with controls. According to Gene Ontology analysis, differentially expressed genes from DXM-treated females participate in developmental process, multicellular organismal process, cell differentiation, carbohydrate metabolic process and embryonic morphogenesis. Others are involved in signaling and signal transduction, including cAMP, cGMP-dependent protein kinase pathway, endocrine system, and thyroid hormone pathway, as based on Kyoto Encyclopedia of Genes and Genomes analysis. The novel findings warrant deeper investigation of the influence of DXM on growth and other pathways in this neglected tropical disease pathogen, particularly in a setting of autoimmune and/or allergic disease, which may require the clinical use of steroid-like hormones during latent or covert strongyloidiasis.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | | | - Pokkamol Laoraksawong
- School of Health Science, Sukhothai Thammathirat Open University, Nonthaburi, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Arporn Wangwiwatsin
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Chaisiri Wongkham
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Porntip Laummaunwai
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wannaporn Ittiprasert
- Department of Microbiology, Immunology and Tropical Medicine, and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, George Washington University, Washington, DC, United States of America
| | - Paul J. Brindley
- Department of Microbiology, Immunology and Tropical Medicine, and Research Center for Neglected Diseases of Poverty, School of Medicine and Health Sciences, George Washington University, Washington, DC, United States of America
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
- * E-mail:
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15
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Janwan P, Intapan PM, Sadaow L, Rodpai R, Yamasaki H, Boonroumkaew P, Sanpool O, Thanchomnang T, Sadee P, Maleewong W. Development of Immunochromatographic Test Kit for Rapid Detection of Specific IgG4 Antibody in Whole-Blood Samples for Diagnosis of Human Gnathostomiasis. Diagnostics (Basel) 2021; 11:diagnostics11050862. [PMID: 34064745 PMCID: PMC8151850 DOI: 10.3390/diagnostics11050862] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 05/04/2021] [Accepted: 05/08/2021] [Indexed: 11/16/2022] Open
Abstract
Human gnathostomiasis is a harmful food-borne zoonosis caused by roundworms of the genus Gnathostoma. The parasite can occasionally migrate to the central nervous system, causing life-threatening disease and death. Here, we report a new point-of-care (POC) test kit, the gnathostomiasis blood immunochromatographic test (GB-ICT) kit. The kit is based on recombinant Gnathostoma spinigerum antigen and detects specific IgG4 antibody in whole-blood samples (WBSs). The GB-ICT kit showed potentially high diagnostic values with simulated WBSs (n = 248), which were obtained by spiking patients’ sera with red blood cells. The accuracy, sensitivity, specificity, and positive and negative predictive values were 95.2%, 100%, 93.8%, 81.5%, and 100%, respectively. Ten WBSs from clinically suspected gnathostomiasis patients were all positive according to the GB-ICT kit, while 10 WBSs from healthy volunteers were negative. The GB-ICT kit is a simple and convenient POC testing tool using finger-prick blood samples: venous blood sampling and serum separation processes are not required. The GB-ICT kit can support clinical diagnosis in remote areas and field settings without sophisticated equipment facilities.
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Affiliation(s)
- Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand;
| | - Pewpan M. Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.M.I.); (L.S.); (R.R.); (P.B.); (O.S.)
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.M.I.); (L.S.); (R.R.); (P.B.); (O.S.)
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.M.I.); (L.S.); (R.R.); (P.B.); (O.S.)
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan;
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.M.I.); (L.S.); (R.R.); (P.B.); (O.S.)
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.M.I.); (L.S.); (R.R.); (P.B.); (O.S.)
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
- Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand
| | - Phuangphaka Sadee
- Clinical Immunology Unit, Srinagarind Hospital, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.M.I.); (L.S.); (R.R.); (P.B.); (O.S.)
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
- Correspondence: ; Tel.: +66-4336-3434
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16
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Sawadpanich K, Chansuk N, Boonroumkaew P, Sadaow L, Rodpai R, Sanpool O, Janwan P, Intapan PM, Maleewong W. An Unusual Case of Gastric Gnathostomiasis Caused by Gnathostoma spinigerum Confirmed by Video Gastroscopy and Morphological and Molecular Identification. Am J Trop Med Hyg 2021; 104:2050-2054. [PMID: 33901007 DOI: 10.4269/ajtmh.21-0015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Accepted: 03/05/2021] [Indexed: 11/07/2022] Open
Abstract
Human gnathostomiasis is a harmful foodborne parasitic infection caused by nematodes of the genus Gnathostoma. Here, we report an unusual case of gastric gnathostomiasis seen in a hospital in Thailand along with the clinical characteristics, treatment, and outcome. A 39-year-old man presented with complaints of epigastric pain, dizziness, and history of passing dark, tarry stools for 2 days. The patient had a history of consuming raw freshwater fish. Supplementary differential diagnosis was performed via rapid serological testing, and presence of the causative agent was confirmed based on video gastroscopy, morphology of the removed parasite, and molecular identification. After its surgical removal from the stomach, the parasite was morphologically identified as Gnathostoma species. Molecular identification was performed via DNA extraction from the recovered worm, and amplification and sequencing of the second internal transcribed spacer (ITS2) region and partial cytochrome c oxidase subunit I (cox1) gene. The ITS2 and cox1 sequences were consistent with those of Gnathostoma spinigerum. Clinicians in endemic areas should therefore be aware of the rare clinical manifestations and use of supplementary serological tests to facilitate early diagnosis and treatment of gastric gnathostomiasis.
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Affiliation(s)
- Kookwan Sawadpanich
- 1Gastroenterology and Hepatology Division, Department of Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Nitiwat Chansuk
- 2Internal Medicine Unit, Ratchaphruek Hospital, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- 3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,4Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- 3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,4Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- 3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,4Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- 3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,4Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Penchom Janwan
- 5Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, Thailand
| | - Pewpan M Intapan
- 3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,4Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- 3Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,4Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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17
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Phupiewkham W, Rodpai R, Inthavongsack S, Laymanivong S, Thanchomnang T, Sadaow L, Boonroumkaew P, Sanpool O, Janwan P, Intapan PM, Maleewong W. High prevalence of opisthorchiasis in rural populations from Khammouane Province, central Lao PDR: serological screening using total IgG- and IgG4-based ELISA. Trans R Soc Trop Med Hyg 2021; 115:1403-1409. [PMID: 33882131 DOI: 10.1093/trstmh/trab066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 03/24/2021] [Accepted: 04/07/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Human opisthorchiasis, caused by Opisthorchis viverrini, is a public health problem in Southeast Asia and a major risk factor for cholangiocarcinoma. In Lao PDR, seroprevalence and the relationship between the number of O. viverrini eggs in infected people and specific antibody responses are still unknown. We evaluated and compared parasitological and serological screening methods in the community in an endemic area of opisthorchiasis in Lao PDR. METHODS Seroprevalence of O. viverrini-specific total IgG and IgG4 antibodies and their relationships with O. viverrini egg intensities were evaluated in Khammouane Province, central Lao PDR, using ELISA and a modified formalin ethyl-acetate concentration technique (FECT). RESULTS FECT stool examination revealed O. viverrini eggs in 70.3% (90/128) of individuals (95% CI 61.6 to 78.1%) while ELISA (based on total IgG and on IgG4 antibodies to O. viverrini) found 98.4% (95% CI 94.5 to 99.8%) and 89.8% (95% CI 83.3 to 94.5%) of sera, respectively. There was a positive and significant correlation between numbers of O. viverrini eggs per gram and levels of both IgG (R2=0.168, p<0.001) and IgG4 (R2=0.219, p<0.001) antibodies. CONCLUSIONS A high prevalence of human opisthorchiasis in Lao PDR was found using a new platform, serological screening in the community. This points to a need for sustainable control of this liver fluke infection.
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Affiliation(s)
- Weeraya Phupiewkham
- D epart ment of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand.,Department of Science and Mathematics, Faculty of Science and Technology, Rajamangala University of Technology Tawan-ok, Chonburi 20110, Thailand
| | - Rutchanee Rodpai
- D epart ment of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Somchith Inthavongsack
- Malaria and Helminth Control Center, Thakhek and Health Khammouane Province, Khammouane Province 12000, Lao PDR
| | - Sakhone Laymanivong
- Center of Malariology, Parasitology and Entomology, Ministry of Health, Vientiane Capital 01000, Lao PDR
| | | | - Lakkhana Sadaow
- D epart ment of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Patcharaporn Boonroumkaew
- D epart ment of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Oranuch Sanpool
- D epart ment of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Pewpan M Intapan
- Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Wanchai Maleewong
- D epart ment of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand.,Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand
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18
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Rodpai R, Sadaow L, Boonroumkaew P, Phupiewkham W, Thanchomnang T, Limpanont Y, Chusongsang P, Sanpool O, Ohmae H, Yamasaki H, Intapan PM, Maleewong W. Comparison of point-of-care test and enzyme-linked immunosorbent assay for detection of immunoglobulin G antibodies in the diagnosis of human schistosomiasis japonica. Int J Infect Dis 2021; 107:47-52. [PMID: 33864916 DOI: 10.1016/j.ijid.2021.04.039] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2021] [Revised: 04/10/2021] [Accepted: 04/12/2021] [Indexed: 11/18/2022] Open
Abstract
OBJECTIVE Schistosomiasis japonica is an important helminthic disease in Asia. Sensitive and accurate diagnostic tools are indispensable for clinical diagnosis, screening infection and monitoring its control. In this study, we developed an immunochromatographic test (Sj-ICT) to detect anti-Schistosoma japonicum immunoglobulin G antibodies in human sera. METHODS Somatic extract from adult S. japonicum was used as an antigen. The Sj-ICT was developed and optimized as a point-of-care test. All 214 human serum samples were evaluated for diagnostic usefulness and comparison with an enzyme-linked immunosorbent assay (ELISA). RESULTS The diagnostic sensitivity, specificity, positive and negative predictive values, and accuracy of the Sj-ICT were 90.8%, 87.9%, 86.4%, 91.9% and 89.3%, respectively. For ELISA the values were respectively 91.8%, 87.9%, 86.5%, 92.7% and 89.7%. The concordance between both methods was 86.4 % (Cohen's kappa value = 0.729). CONCLUSIONS The immunochromatographic test kit developed can support clinical diagnosis and large-scale surveys in endemic areas without requiring additional facilities or ancillary supplies.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Weeraya Phupiewkham
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand; Faculty of Medicine, Mahasarakram University, Mahasarakram, Thailand
| | - Yanin Limpanont
- Applied Malacology Laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Phiraphol Chusongsang
- Applied Malacology Laboratory, Department of Social and Environmental Medicine, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand
| | - Oranuch Sanpool
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand.
| | - Hiroshi Ohmae
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan; Department of Tropical Medicine and Parasitology, Dokkyo Medical University, Tochigi 321-0293, Japan
| | - Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo 162-8640, Japan
| | - Pewpan M Intapan
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand; Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
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19
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Rodpai R, Sanpool O, Thanchomnang T, Wangwiwatsin A, Sadaow L, Phupiewkham W, Boonroumkaew P, Intapan PM, Maleewong W. Investigating the microbiota of fermented fish products (Pla-ra) from different communities of northeastern Thailand. PLoS One 2021; 16:e0245227. [PMID: 33444386 PMCID: PMC7808594 DOI: 10.1371/journal.pone.0245227] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 12/27/2020] [Indexed: 11/21/2022] Open
Abstract
DNA-sequencing was performed on the V3-V4 regions of 16S rRNA genes to investigate the microbial diversity of five samples of fermented freshwater fish (pla-ra) from three provinces in northeastern Thailand. The samples had salt concentrations ranging from 7 to 10%, pH values from 4.83 to 7.15, and D-/L-lactic acid concentrations of 90 to 450 mg/l. A total of 598 operational taxonomic units were annotated at various taxonomic ranks based on the SILVA Database. The lactic-acid and halophilic genera Tetragenococcus, Halanaerobium and Lactobacillus were among the dominant taxa of bacteria. The top 20 non-redundant taxa were considered in more detail. In two pla-ra samples, Tetragenococcus muriaticus was commonly identified. Halanaerobium fermentans was the most abundant species in a third sample and co-dominant in another sample. Lactobacillus rennini was dominant in the pla-ra sample from Roi Et Province. Additionally, other beneficial bacteria were detected including Staphylococcus nepalensis, Lactobacillus sakei, Lactobacillus pentosus, Weissella confusa, and Bifidobacterium bifidum. Differences between samples may be due to use of different raw materials, salt concentrations, recipes, processes and fermentation periods. The microbial communities in pla-ra provide a better understanding of the production outcomes of traditional products. Further optimization of the fermentation process, for example by using dominant bacterial taxa in starter cultures, may improve processes of food fermentation, food quality and flavor control, providing useful guidelines for industrial applications.
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Affiliation(s)
- Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
| | - Tongjit Thanchomnang
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
- Faculty of Medicine, Mahasarakram University, Mahasarakram, Thailand
| | - Arporn Wangwiwatsin
- Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
| | - Weeraya Phupiewkham
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
| | - Pewpan M Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Mekong Health Science Research Institute, Faculty of Medicine, Khon Kaen, Thailand
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20
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Sadaow L, Yamasaki H, Morishima Y, Sanpool O, Rodpai R, Janwan P, Boonroumkaew P, Maleewong W, Intapan PM. Effectiveness of Fasciola gigantica excretory-secretory and recombinant cathepsin L antigens for rapid diagnosis of human fascioliasis using immunochromatographic devices. Parasitol Res 2020; 119:3691-3698. [PMID: 33009945 DOI: 10.1007/s00436-020-06907-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 09/27/2020] [Indexed: 10/23/2022]
Abstract
Fascioliasis, a food- and water-borne trematodiasis, has been identified as a public health threat by the World Health Organization, with millions of people estimated to be infected or at risk of infection worldwide. We developed an immunochromatographic test (ICT) as a point-of-care (POC) tool for the rapid serodiagnosis of human fascioliasis caused by Fasciola gigantica and evaluated their diagnostic ability. Two tests were developed using antigens from adult F. gigantica excretory-secretory (ES) product and recombinant F. gigantica cathepsin L (rFgCL). Sera from 12 patients with parasitologically proven fascioliasis caused by F. gigantica, 18 with clinically suspected fascioliasis, 65 with other parasitic infections, and 30 healthy controls were used. Using a cutoff of > 0.5 for antibody detection, the sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the ES-based ICT method were 100%, 98.9% 96.8%, 100%, and 99.2%, respectively, and those of the rFgCL-based ICT method were 86.7%, 93.7%, 81.3%, 95.7%, and 92.0%, respectively. The concordance between the two methods was 91.2%. Tests using F. gigantica ES and rFgCL antigens can be employed quickly and easily as POC diagnostic tools. They can be used to support the clinical diagnosis of human fascioliasis gigantica and in large-scale surveys in endemic areas throughout tropical regions without necessitating additional facilities or ancillary supplies.
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Affiliation(s)
- Lakkhana Sadaow
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Parasitology, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Hiroshi Yamasaki
- Department of Parasitology, Ministry of Health, Labour and Welfare, National Institute of Infectious Diseases, Tokyo, 162-8640, Japan
| | - Yasuyuki Morishima
- Department of Parasitology, Ministry of Health, Labour and Welfare, National Institute of Infectious Diseases, Tokyo, 162-8640, Japan
| | - Oranuch Sanpool
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Parasitology, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Parasitology, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Penchom Janwan
- Department of Medical Technology, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat, 80161, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Parasitology, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Wanchai Maleewong
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.,Department of Parasitology, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Pewpan M Intapan
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand. .,Department of Parasitology, Faculty of Medicine and Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, 40002, Thailand.
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21
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Boonroumkaew P, Sadaow L, Sanpool O, Rodpai R, Thanchomnang T, Phupiewkham W, Intapan PM, Maleewong W. Effectiveness of Strongyloides Recombinant IgG Immunoreactive Antigen in Detecting IgG and IgG4 Subclass Antibodies for Diagnosis of Human Strongyloidiasis Using Rapid Immunochromatographic Tests. Diagnostics (Basel) 2020; 10:diagnostics10090615. [PMID: 32825495 PMCID: PMC7555090 DOI: 10.3390/diagnostics10090615] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/04/2020] [Accepted: 08/12/2020] [Indexed: 12/12/2022] Open
Abstract
Human strongyloidiasis is an important soil-transmitted helminthiasis that affects millions worldwide and can develop into fatal systemic strongyloidiasis in immunosuppressed patients. We have developed two new rapid and simple-to-use immunochromatographic test (ICT) kits for rapid serodiagnosis that support stool examination for clinical diagnosis. Strongyloides stercoralis recombinant IgG immunoreactive antigen (GenBank: AAB97359.1; rSsIR-based ICT kit) was used for detection of IgG and IgG4 antibodies. The diagnostic efficacy of both kits was evaluated using human serum samples from strongyloidiasis patients, healthy individuals, and those with other parasitosis. At a prevalence of infection of 36.4%, the diagnostic sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of the rSsIR-based IgG ICT kit were 91.7%, 83.8%, 76.4%, 94.6%, and 86.7%, respectively, and those of the rSsIR-based IgG4 ICT kit were 78.3%, 84.8%, 74.6%, 87.3%, and 82.4% respectively. The concordance between the two kits was 89.7%. The recombinant antigen can be produced to an unlimited extent and the kits can be used as point-of-care diagnostic tools and in large-scale surveys in endemic areas throughout tropical regions without necessitating additional facilities or ancillary supplies.
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Affiliation(s)
- Patcharaporn Boonroumkaew
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Lakkhana Sadaow
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Oranuch Sanpool
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Rutchanee Rodpai
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Tongjit Thanchomnang
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
- Faculty of Medicine, Mahasarakham University, Maha Sarakham 44000, Thailand
| | - Weeraya Phupiewkham
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Pewpan M. Intapan
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
| | - Wanchai Maleewong
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen 40002, Thailand; (P.B.); (L.S.); (O.S.); (R.R.); (W.P.); (P.M.I.)
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen 40002, Thailand;
- Correspondence: ; Tel.: +66-4336-3434
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Boonroumkaew P, Sanguansak T, Visaetsilpanonta S, Sanpool O, Sadaow L, Intapan PM, Maleewong W. Two Ocular Angiostrongyliasis Cases in Thailand with Molecular Identification of Causative Parasite Species. Am J Trop Med Hyg 2020; 102:1399-1403. [PMID: 32228781 DOI: 10.4269/ajtmh.19-0701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Human angiostrongyliasis is an important foodborne helminthic zoonosis caused by the nematodes of the genus Angiostrongylus. We describe two parasitologically confirmed cases of ocular angiostrongyliasis, presenting at a tertiary care hospital in Thailand between 2012 and 2018. Parasites were surgically recovered from patients' eyes and morphologically identified as Angiostrongylus species. DNA analysis allowed identification of Angiostrongylus cantonensis. Polymerase chain reaction was used to amplify all or part of the small nuclear ribosomal subunit, the second internal transcribed spacer region, and cytochrome c oxidase subunit 1. The sequences subsequently obtained were highly similar to those of A. cantonensis (97-100%). This is the first molecular confirmation that A. cantonensis is a causative agent of human angiostrongyliasis in Thailand.
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Affiliation(s)
- Patcharaporn Boonroumkaew
- Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Thuss Sanguansak
- Department of Ophthalmology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | | | - Oranuch Sanpool
- Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Pewpan M Intapan
- Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
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23
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Sadaow L, Sanpool O, Rodpai R, Boonroumkaew P, Maleewong W, Intapan PM. Development of immunochromatographic device as a point-of-care tool for serodiagnosis of human strongyloidiasis cases. Eur J Clin Microbiol Infect Dis 2019; 39:465-470. [PMID: 31758442 PMCID: PMC7040067 DOI: 10.1007/s10096-019-03745-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2019] [Accepted: 10/21/2019] [Indexed: 02/06/2023]
Abstract
Human strongyloidiasis is an important gastrointestinal disease with an estimated 30 to 100 million people infected. Prevalence is generally underestimated since many infections are asymptomatic, and traditional diagnostic tests based on parasitological examination of stool samples are not adequately sensitive. Serological tests are useful and supportive but are still only available in a reference research setting. We made an immunochromatographic test (ICT) kit for rapid serodiagnosis of human strongyloidiasis. The antigen used in the ICT kit was extracted from larvae of Strongyloides stercoralis. Diagnostic efficacy of the kit was evaluated using human serum samples from strongyloidiasis patients, healthy persons, and those with other parasitoses. When using a cutoff level of 0.5 or above, the diagnostic sensitivity, specificity, and positive and negative predictive values at the prevalence of infection of 34.4%, were 93.3%, 83.7%, 76.7%, and 95.6%, respectively. This ICT kit is easy to use at the point-of-care and a result can be obtained in 15 min. Sophisticated instruments and highly trained staff are not required. It can be used in several diagnostic and public-health settings, e.g., prevalence surveys in endemic areas, confirmation and monitoring of cure post-treatment, diagnosis and screening of infected but asymptomatic individuals, and populations “at risk” for hyperinfection syndrome or disseminated strongyloidiasis if they are given immunosuppressive treatment for other conditions.
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Affiliation(s)
- Lakkhana Sadaow
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Patcharaporn Boonroumkaew
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand
| | - Pewpan M Intapan
- Department of Parasitology and Excellence in Medical Innovation, and Technology Research Group, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
- Research and Diagnostic Center for Emerging Infectious Diseases, Mekong Health Science Research Institute, Khon Kaen University, Khon Kaen, Thailand.
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24
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Boonroumkaew P, Sanpool O, Rodpai R, Sadaow L, Somboonpatarakun C, Laymanivong S, Aung WPP, Un M, Laummaunwai P, Intapan PM, Maleewong W. Molecular identification and genetic diversity of Gnathostoma spinigerum larvae in freshwater fishes in southern Lao PDR, Cambodia, and Myanmar. Parasitol Res 2019; 118:1465-1472. [PMID: 30911911 DOI: 10.1007/s00436-019-06292-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2019] [Accepted: 03/14/2019] [Indexed: 02/07/2023]
Abstract
Gnathostomiasis, an emerging food-borne parasitic zoonosis in Asia, is mainly caused by Gnathostoma spinigerum (Nematoda: Gnathostomatidae). Consumption of raw meat or freshwater fishes in endemic areas is the major risk factor. Throughout Southeast Asia, including Thailand, Lao PDR, Cambodia, and Myanmar, freshwater fish are often consumed raw or undercooked. The risk of this practice for gnathostomiasis infection in Lao PDR, Cambodia, and Myanmar has never been evaluated. Here, we identified larvae of Gnathostoma species contaminating freshwater fishes sold at local markets in these three countries. Public health authorities should advise people living in, or travelling to, these areas to avoid eating raw or undercooked freshwater fishes. Identification of larvae was done using molecular methods: DNA was sequenced from Gnathostoma advanced third-stage larvae recovered from snakehead fishes (Channa striata) and freshwater swamp eels (Monopterus albus). Phylogenetic analysis of a portion of the mitochondrial cytochrome c oxidase subunit I gene showed that the G. spinigerum sequences recovered from southern Lao PDR, Cambodia, and Myanmar samples had high similarity to those of G. spinigerum from China. Sequences of the nuclear ribosomal DNA internal transcribed spacer 2 region closely resembled sequences of G. spinigerum from Thailand, Indonesia, the USA, and central Lao PDR. This is the first molecular evidence of G. spinigerum from freshwater fishes in southern Lao PDR, Cambodia, and Myanmar.
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Affiliation(s)
- Patcharaporn Boonroumkaew
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Oranuch Sanpool
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Rutchanee Rodpai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Lakkhana Sadaow
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Chalermchai Somboonpatarakun
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Sakhone Laymanivong
- Centre of Malariology, Parasitology and Entomology, Ministry of Health, Vientiane, Lao PDR
| | - Win Pa Pa Aung
- Department of Microbiology, University of Medicine 2, Ministry of Health and Sport, Yangon, Myanmar
| | - Mesa Un
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Porntip Laummaunwai
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Pewpan M Intapan
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Wanchai Maleewong
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand. .,Research and Diagnostic Center for Emerging Infectious Diseases, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand.
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25
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Brandon-Mong GJ, Ketzis JK, Choy JS, Boonroumkaew P, Tooba M, Sawangjaroen N, Yasiri A, Janwan P, Tan TC, Nissapatorn V. DNA barcoding relates Trichuris species from a human and a man's best friend to non-human primate sources. Trop Biomed 2018; 35:1131-1139. [PMID: 33601860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Trichuris trichiura, the whipworm of humans, is one of the most prevalent soiltransmitted helminths (STH) reported worldwide. According to a recent study, out of 289 STH studies in Southeast Asia, only three studies used molecular methods. Hence, the genetic assemblages of Trichuris in Southeast Asia are poorly understood. In this study, we used partial mitochondrial DNA (cytochrome c oxidase subunit 1 or COI) sequences for analysis. Trichuris grouped in a same clade with different hosts indicate the potential of cross infection between hosts. Based on COI, the adult Trichuris isolated from a Malaysian patient was most closely related to Trichuris isolated from Papio anubis (olive baboons) from the USA. The Trichuris isolated from the dog from Malaysia was genetically similar to a Trichuris species isolated from Macaca silenus (lion-tailed macaque) from Czech Republic. Both the human and dog isolated Trichuris grouped in clades with different hosts indicating the potential of cross infection between hosts. Specific PCR primers based on the partial COI of T. trichiura isolated from African green monkey and T. serrata were designed and successfully amplified using multiplex PCR of the pooled DNA samples. Our results suggest a complex parasite-host relationship, and support the theory of cross infection of Trichuris between humans and non-human primates as suggested in previous publications.
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Affiliation(s)
- G J Brandon-Mong
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
- Biodiversity Research Center, Academia Sinica, No. 28, Lane 70, Section 2, Yanjiuyuan Road, Nangang District, Taipei City, 115, Taiwan
| | - J K Ketzis
- Ross University School of Veterinary Medicine, PO Box 334, Basseterre, St. Kitts and Nevis, West Indies
| | - J S Choy
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - P Boonroumkaew
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - M Tooba
- Department of Medical Microbiology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - N Sawangjaroen
- Department of Microbiology, Faculty of Science, Prince of Songkla University, Songkhla, Thailand
| | - A Yasiri
- Chulabhorn International College of Medicine, Thammasat University, Pathum Thani, Thailand
| | - P Janwan
- School of Allied Health Sciences and 8Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat, Thailand
| | - T C Tan
- Department of Parasitology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - V Nissapatorn
- School of Allied Health Sciences and 8Research Excellence Center for Innovation and Health Products (RECIHP), Walailak University, Nakhon Si Thammarat, Thailand
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26
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Mahboob T, Azlan AM, Shipton FN, Boonroumkaew P, Nor Azman NS, Sekaran SD, Ithoi I, Tan TC, Samudi C, Wiart C, Nissapatorn V. Acanthamoebicidal activity of periglaucine A and betulinic acid from Pericampylus glaucus (Lam.) Merr. in vitro. Exp Parasitol 2017; 183:160-166. [PMID: 28916456 DOI: 10.1016/j.exppara.2017.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Revised: 08/28/2017] [Accepted: 09/11/2017] [Indexed: 11/29/2022]
Abstract
Acanthamoeba species are pathogenic protozoa which account for amoebic keratitis, conjunctivitis and granulomatous amoebic encephalitis. These amoebae form cysts which resist drugs and more effective acanthamoebicidal agents are needed. Medicinal plants could be useful in improving the current treatment strategies for Acanthamoeba infections. In the present study, we examined the amoebicidal effects of Pericampylus glaucus (Lam.) Merr., a medicinal plant used for the treatment of conjunctivitis in Malaysia. Pathogenic Acanthamoeba triangularis were isolated from environmental water samples and treated with different concentrations of fractions obtained from Pericampylus glaucus (Lam.) Merr. as well as main constituents for 24-72 h. Chlorhexidine was used as a reference drug. Ethanol fraction of stem showed significant (p < 0.05) inhibition of trophozoites survival. Betulinic acid and periglaucine A from this plant at 100 μg/mL inhibited more than 70% survival of both cysts and trophozoites. The calculated therapeutic index for betulinic acid and periglaucine A was 170 and 1.5 for trophozoites stage and 3.75 and 8.5 for cysts stage. The observed amoebicidal efficacies indicate the beneficial aspects of this plant in the treatment of Acanthamoeba infection. Periglaucine A could also be of value for the treatment of Acanthamoeba infection.
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Affiliation(s)
- Tooba Mahboob
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Abdul-Majid Azlan
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Fiona Natalia Shipton
- School of Pharmacy, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, 43500 Selangor, Malaysia
| | | | - Nadiah Syafiqah Nor Azman
- School of Pharmacy, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, 43500 Selangor, Malaysia
| | - Shamala Devi Sekaran
- Department of Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Init Ithoi
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Tian-Chye Tan
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Chandramathi Samudi
- Department of Microbiology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Christophe Wiart
- School of Pharmacy, Faculty of Science, University of Nottingham Malaysia Campus, Semenyih, 43500 Selangor, Malaysia.
| | - Veeranoot Nissapatorn
- Department of Parasitology, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia; School of Allied Health Sciences, Walailak University, 80161 Nakhon Si Thammarat, Thailand.
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