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"Hye-Won Yang"

Brief Communications

Loop-Mediated Isothermal Amplification Targeting Actin DNA of Trichomonas vaginalis
Youn-Kyoung Goo, Won-Sik Shin, Hye-Won Yang, So-Young Joo, Su-Min Song, Jae-Sook Ryu, Hyun-Hee Kong, Won-Ki Lee, Dong-Il Chung, Yeonchul Hong
Korean J Parasitol 2016;54(3):329-334.
Published online June 30, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.3.329
Trichomoniasis caused by Trichomonas vaginalis is a common sexually transmitted disease. Its association with several health problems, including preterm birth, pelvic inflammatory disease, cervical cancer, and transmission of human immunodeficiency virus, emphasizes the importance of improved access to early and accurate detection of T. vaginalis. In this study, a rapid and efficient loop-mediated isothermal amplification-based method for the detection of T. vaginalis was developed and validated, using vaginal swab specimens from subjects suspected to have trichomoniasis. The LAMP assay targeting the actin gene was highly sensitive with detection limits of 1 trichomonad and 1 pg of T. vaginalis DNA per reaction, and specifically amplified the target gene only from T. vaginalis. Validation of this assay showed that it had the highest sensitivity and better agreement with PCR (used as the gold standard) compared to microscopy and multiplex PCR. This study showed that the LAMP assay, targeting the actin gene, could be used to diagnose early infections of T. vaginalis. Thus, we have provided an alternative molecular diagnostic tool and a point-of-care test that may help to prevent trichomoniasis transmission and associated complications.

Citations

Citations to this article as recorded by  Crossref logo
  • Loop‐Mediated Isothermal Amplification (LAMP) for the Diagnosis of Sexually Transmitted Infections: A Review
    Yasaman Ahmadi, Yejiong Yu, Zhanfeng Cui, Wei E. Huang, Monique I. Andersson
    Microbial Biotechnology.2025;[Epub]     CrossRef
  • A novel detection method based on MIRA-CRISPR/Cas13a-LFD targeting the repeated DNA sequence of Trichomonas vaginalis
    Zhenke Yang, Jinghui Wang, Yiming Qi, Yiping Shi, Fakun Li, Weijuan Wang, Xiaowei Tian, Xuefang Mei, Zhenchao Zhang, Shuai Wang
    Parasites & Vectors.2024;[Epub]     CrossRef
  • A novel fluoro colorimetric Loop mediated isothermal amplification (LAMP) assay for detection of Trichomonas vaginalis
    Shoorashetty Manohar Rudresh, Pareyam Pooja, Pattacheravanda Nanaiah Shakuntala, Kanta Madhu
    Indian Journal of Medical Microbiology.2024; 49: 100610.     CrossRef
  • Establishment of a programmatic detection method for Trichomonas vaginalis based on double antibody sandwich ELISA targeting TvCP39 antigen
    Yuhua Li, Fakun Li, Wenjie Tian, Yani Zhang, Weijuan Wang, Zhenke Yang, Xiaowei Tian, Shuai Wang, Xuefang Mei, Zhenchao Zhang
    Acta Tropica.2024; 260: 107489.     CrossRef
  • Label-free electrochemical DNA biosensing of MR TV 29 18s ribosomal RNA gene of Trichomonas vaginalis by signalization of non-spherical gold nanoparticles
    R. Dehdari Vais, H. Heli, N. Sattarahmady
    Materials Today Communications.2023; 34: 105123.     CrossRef
  • Construction a novel detection method for Trichomonas vaginalis based on recombinant enzyme polymerase amplification targeting the Actin gene
    Fakun Li, Yangyang Deng, Wanxin Sheng, Xihui Gao, Weijuan Wang, Zhili Chu, Xuefang Mei, Zhenke Yang, Xiaowei Tian, Shuai Wang, Zhenchao Zhang
    Journal of Eukaryotic Microbiology.2023;[Epub]     CrossRef
  • A novel and ultrasensitive label-free electrochemical DNA biosensor for Trichomonas vaginalis detection based on a nanostructured film of poly(ortho-aminophenol)
    Rezvan Dehdari Vais, Hossein Heli, Naghmeh Sattarahmady, Afshin Barazesh
    Synthetic Metals.2022; 287: 117082.     CrossRef
  • Omics Analyses of Trichomonas vaginalis Actin and Tubulin and Their Participation in Intercellular Interactions and Cytokinesis
    Sebastián Lorenzo-Benito, Luis Alberto Rivera-Rivas, Lizbeth Sánchez-Ayala, Jaime Ortega-López, Octavio Montes-Flores, Daniel Talamás-Lara, Rossana Arroyo
    Genes.2022; 13(6): 1067.     CrossRef
  • Photo-genosensor for Trichomonas vaginalis based on gold nanoparticles-genomic DNA
    S. Ilbeigi, R. Dehdari Vais, N. Sattarahmady
    Photodiagnosis and Photodynamic Therapy.2021; 34: 102290.     CrossRef
  • Loop mediated isothermal amplification assay for detection of Trichomonas vaginalis in vaginal swabs among symptomatic women from North India
    S. Khurana, R. Dadwal, N. Sharma, A. Mewara, S. Singh, R. Bagga, R. Yadav, S. Sethi
    Letters in Applied Microbiology.2020; 70(3): 196.     CrossRef
  • Establishment and application of isothermal amplification techniques for the detection of heat-stable I enterotoxin of enterotoxigenic Escherichia coli
    Junjun Zhai, Zhang Yan, Feng Ping, Qu Lei, Xuelong Chen, Yanping Qi, Tianwen Wang
    PLOS ONE.2020; 15(4): e0230881.     CrossRef
  • Development of a convenient detection method for Trichomonas vaginalis based on loop-mediated isothermal amplification targeting adhesion protein 65
    Yuhua Li, Shuai Wang, Haoran Li, Xiaoxiao Song, Hao Zhang, Yujuan Duan, Chengyang Luo, Bingli Wang, Sifan Ji, Qing Xie, Zhenchao Zhang
    BMC Infectious Diseases.2020;[Epub]     CrossRef
  • Label-free ultrasensitive electrochemical genosensing of Trichomonas vaginalis using anisotropic-shaped gold nanoparticles as a platform, a repeated sequence of the parasite DNA as a probe, and toluidine blue as a redox marker
    N. Delshadi-Jahromi, R. Nazari-Vanani, H. Yadegari, N. Sattarahmady, G.R. Hatam, H. Heli
    Sensors and Actuators B: Chemical.2018; 273: 234.     CrossRef
  • Real-time loop-mediated isothermal amplification for rapid detection of Enterocytozoon hepatopenaei
    Shao-Xin Cai, Fan-De Kong, Shu-Fei Xu, Cui-Luan Yao
    PeerJ.2018; 6: e5993.     CrossRef
  • 10,602 View
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  • 15 Web of Science
  • Crossref
Prevalence of Trichomonas vaginalis in Women Visiting 2 Obstetrics and Gynecology Clinics in Daegu, South Korea
Youn-Kyoung Goo, Won-Sik Shin, Hye-Won Yang, So-Young Joo, Su-Min Song, Jae-Sook Ryu, Won-Myung Lee, Hyun-Hee Kong, Won-Ki Lee, Sang-Eun Lee, Won-Ja Lee, Dong-Il Chung, Yeonchul Hong
Korean J Parasitol 2016;54(1):75-80.
Published online February 26, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.1.75
This study explored epidemiological trends in trichomoniasis in Daegu, South Korea. Wet mount microscopy, PCR, and multiplex PCR were used to test for Trichomonas vaginalis in vaginal swab samples obtained from 621 women visiting 2 clinics in Daegu. Of the 621 women tested, microscopy detected T. vaginalis in 4 (0.6%) patients, PCR detected T. vaginalis in 19 (3.0%) patients, and multiplex PCR detected T. vaginalis in 12 (1.9%) patients. Testing via PCR demonstrated high sensitivity and high negative predictive value for T. vaginalis. Among the 19 women who tested positive for T. vaginalis according to PCR, 94.7% (18/19) reported vaginal signs and symptoms. Notably, more than 50% of T. vaginalis infections occurred in females younger than 30 years old, and 58% were unmarried. Multiplex PCR, which simultaneously detects pathogens from various sexually transmitted infections, revealed that 91.7% (11/12) of patients were infected with 2 or more pathogens. Mycoplasma hominis was the most prevalent co-infection pathogen with T. vaginalis, followed by Ureaplasma urealyticum and Chlamydia trachomatis. Our results indicate that PCR and multiplex PCR are the most sensitive tools for T. vaginalis diagnosis, rather than microscopy which has been routinely used to detect T. vaginalis infections in South Korea. Therefore, clinicians should take note of the high prevalence of T. vaginalis infections among adolescent and young women in order to prevent persistent infection and transmission of this disease.

Citations

Citations to this article as recorded by  Crossref logo
  • Diagnostic accuracy of real-time polymerase chain reaction assay for the detection of Trichomonas vaginalis in clinical samples: A systematic review and meta-analysis
    Emmanuel O. Babafemi, Benny P. Cherian, Khalid Rahman, Gilbert M. Mogoko, Oluwatoyin O. Abiola
    African Journal of Laboratory Medicine.2025;[Epub]     CrossRef
  • The prevalence ofTrichomonas vaginalisinfection among the female population of Iran: a systematic review and meta-analysis
    Zeinab Moghadamizad, Javad Yazdizadeh Khalili, Meysam Olfatifar, Milad Badri, Sasan Khazaei
    International Health.2024; 16(3): 240.     CrossRef
  • Combination of genitourinary candidiasis and sexually transmitted infections
    N.E. Portnyagina, A.K. Kvardakova, V.V. Pakhomova, E.G. Gubanova, N.V. Deeva, I.G. Sergeeva
    Russian Journal of Clinical Dermatology and Venereology.2024; 23(4): 377.     CrossRef
  • Trichomonas vaginalis: comparison of primers for implementation as an in-house PCR in rural Vellore, South India
    Nagarajan L. Surya, Thangamani Suji, Santhosh Rani, Irene Dorathy, Shantidani Minz, Rani Diana Sahni
    BMC Infectious Diseases.2024;[Epub]     CrossRef
  • Molecular diagnosis of Trichomonas vaginalis in liquid-based Papanicolaou samples in Shiraz, southern Iran
    Mohammad Saleh Bahreini, Samaneh Sedghi, Yalda Badalzadeh, Mohammad Hossein Motazedian, Manouchehr Shirani, Sareh Sami Jahromi, Aref Teimouri, Mahmoud Agholi, Qasem Asgari
    BMC Women's Health.2023;[Epub]     CrossRef
  • Comparison of Diagnostic Methods for Detection of Trichomonas vaginalis in Prediagnosed Vaginitis Cases and Its Association with Various Pathogens
    Vildan Turan Faraşat, İbrahim Cüneyt Balcıoğlu, Pınar Solmaz Hasdemir, Ertaç Gümüş
    Turkish Journal of Parasitology.2022; 46(3): 167.     CrossRef
  • Trichomonas vaginalis follow-up and persistence in Colombian women
    Lauren Hernández-Buelvas, Milena Camargo, Ricardo Sánchez, Manuel Elkin Patarroyo, Manuel Alfonso Patarroyo
    Scientific Reports.2021;[Epub]     CrossRef
  • Trichomoniasis in a tertiary hospital of Madrid, Spain (2013–2017): prevalence and pregnancy rate, coinfections, metronidazole resistance, and endosymbiosis
    Celia Bolumburu, Vega Zamora, María Muñoz-Algarra, Francisca Portero-Azorín, José Antonio Escario, Alexandra Ibáñez-Escribano
    Parasitology Research.2020; 119(6): 1915.     CrossRef
  • Status of common parasitic diseases in Korea in 2019
    Sun Huh
    Journal of the Korean Medical Association.2019; 62(8): 437.     CrossRef
  • PREVALENCE OF TRICHOMONIASIS IN ASYMPTOMATIC PREGNANT WOMEN POPULATION IN BANDUNG, WEST JAVA, INDONESIA
    Pati Aji Achdiat, Reiva Farah Dwiyana, Vina Feriza, Rasmia Rowawi, Rendy Ariezal Effendi, Oki Suwarsa, Hendra Gunawan
    Indonesian Journal of Tropical and Infectious Disease.2019; 7(4): 57.     CrossRef
  • Prevalence of Trichomoniasis by PCR in Women Attending Health Screening in Korea
    Seung-Ryong Kim, Jung-Hyun Kim, Na-Yeong Gu, Yong-Suk Kim, Yeon-Chul Hong, Jae-Sook Ryu
    The Korean Journal of Parasitology.2016; 54(2): 187.     CrossRef
  • Loop-Mediated Isothermal Amplification Targeting Actin DNA of Trichomonas vaginalis
    Youn-Kyoung Goo, Won-Sik Shin, Hye-Won Yang, So-Young Joo, Su-Min Song, Jae-Sook Ryu, Hyun-Hee Kong, Won-Ki Lee, Dong-Il Chung, Yeonchul Hong
    The Korean Journal of Parasitology.2016; 54(3): 329.     CrossRef
  • Epidemiology of Trichomoniasis in South Korea and Increasing Trend in Incidence, Health Insurance Review and Assessment 2009-2014
    So-Young Joo, Youn-Kyoung Goo, Jae-Sook Ryu, Sang-Eun Lee, Won Kee Lee, Dong-Il Chung, Yeonchul Hong, Zhefeng Meng
    PLOS ONE.2016; 11(12): e0167938.     CrossRef
  • 11,072 View
  • 150 Download
  • 11 Web of Science
  • Crossref

Original Article

Effect of Farnesyltransferase Inhibitor R115777 on Mitochondria of Plasmodium falciparum
Young Ran Ha, Bae-Geun Hwang, Yeonchul Hong, Hye-Won Yang, Sang Joon Lee
Korean J Parasitol 2015;53(4):421-430.
Published online August 25, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.4.421
The parasite Plasmodium falciparum causes severe malaria and is the most dangerous to humans. However, it exhibits resistance to their drugs. Farnesyltransferase has been identified in pathogenic protozoa of the genera Plasmodium and the target of farnesyltransferase includes Ras family. Therefore, the inhibition of farnesyltransferase has been suggested as a new strategy for the treatment of malaria. However, the exact functional mechanism of this agent is still unknown. In addition, the effect of farnesyltransferase inhibitor (FTIs) on mitochondrial level of malaria parasites is not fully understood. In this study, therefore, the effect of a FTI R115777 on the function of mitochondria of P. falciparum was investigated experimentally. As a result, FTI R115777 was found to suppress the infection rate of malaria parasites under in vitro condition. It also reduces the copy number of mtDNA-encoded cytochrome c oxidase III. In addition, the mitochondrial membrane potential (ΔΨm) and the green fluorescence intensity of MitoTracker were decreased by FTI R115777. Chloroquine and atovaquone were measured by the mtDNA copy number as mitochondrial non-specific or specific inhibitor, respectively. Chloroquine did not affect the copy number of mtDNA-encoded cytochrome c oxidase III, while atovaquone induced to change the mtDNA copy number. These results suggest that FTI R115777 has strong influence on the mitochondrial function of P. falciparum. It may have therapeutic potential for malaria by targeting the mitochondria of parasites.

Citations

Citations to this article as recorded by  Crossref logo
  • Promising Molecular Targets of Plasmodium Falciparum, the Deadliest Parasite and Their Synthetic Inhibitors: A Review
    Raksha Kardam, Ashok Jangra, Dinesh Kumar, Vinod Kumar, Vikas Sharma
    ChemistrySelect.2025;[Epub]     CrossRef
  • Recent Advances in Diagnostics and Therapeutic Interventions for Drug-Resistant Malaria
    Kangkana Barman, Pranab Goswami
    ACS Infectious Diseases.2025; 11(6): 1296.     CrossRef
  • Novel Therapeutics for Malaria
    Haitham Alaithan, Nirbhay Kumar, Mohammad Z. Islam, Angelike P. Liappis, Victor E. Nava
    Pharmaceutics.2023; 15(7): 1800.     CrossRef
  • Structure- and ligand-based drug design methods for the modeling of antimalarial agents: a review of updates from 2012 onwards
    Vivek K. Vyas, Sapna Bhati, Shivani Patel, Manjunath Ghate
    Journal of Biomolecular Structure and Dynamics.2022; 40(20): 10481.     CrossRef
  • Characterization of the promoter of the human farnesyltransferase beta subunit and the impact of the transcription factor OCT-1 on its expression
    Henning Verhasselt, Patrick Stelmach, Marie Domin, Dominik Jung, Anna Hagemann, Iris Manthey, Hagen S. Bachmann
    Genomics.2022; 114(2): 110314.     CrossRef
  • A comprehensive review on classifying fast-acting and slow-acting antimalarial agents based on time of action and target organelle of Plasmodium sp
    Monika Mariebernard, Abhinab Mohanty, Vinoth Rajendran
    Pathogens and Disease.2022;[Epub]     CrossRef
  • Disentangling the therapeutic tactics in GBM: From bench to bedside and beyond
    S. Daisy Precilla, Shreyas S. Kuduvalli, Anitha Thirugnanasambandhar Sivasubramanian
    Cell Biology International.2021; 45(1): 18.     CrossRef
  • The Repurposing of the Antimalaria Drug, Primaquine, as a Photosensitizer to Inactivate Cryptococcal Cells
    Uju L. Madu, Adepemi O. Ogundeji, Olufemi S. Folorunso, Jacobus Albertyn, Carolina H. Pohl, Olihile M. Sebolai
    Photochem.2021; 1(2): 275.     CrossRef
  • Live and Let Dye: Visualizing the Cellular Compartments of the Malaria Parasite Plasmodium falciparum
    Marleen Linzke, Sun Liu Rei Yan, Attila Tárnok, Henning Ulrich, Matthew R. Groves, Carsten Wrenger
    Cytometry Part A.2020; 97(7): 694.     CrossRef
  • Drug targets for resistant malaria: Historic to future perspectives
    Sahil Kumar, T.R. Bhardwaj, D.N. Prasad, Rajesh K. Singh
    Biomedicine & Pharmacotherapy.2018; 104: 8.     CrossRef
  • The Prenylated Proteome of Plasmodium falciparum Reveals Pathogen-specific Prenylation Activity and Drug Mechanism-of-action
    Jolyn E. Gisselberg, Lichao Zhang, Joshua E. Elias, Ellen Yeh
    Molecular & Cellular Proteomics.2017; 16(4): S54.     CrossRef
  • Exploring the putative self‐binding property of the human farnesyltransferase alpha‐subunit
    Anna Hagemann, Grit Müller, Iris Manthey, Hagen S. Bachmann
    FEBS Letters.2017; 591(21): 3637.     CrossRef
  • 11,610 View
  • 123 Download
  • 12 Web of Science
  • Crossref

Brief Communication

Prevalence of Trichomonas vaginalis by PCR in Men Attending a Primary Care Urology Clinic in South Korea
Jun-Hyeok Seo, Hye-Won Yang, So-Young Joo, Su-Min Song, Yu-Ran Lee, Jae-Sook Ryu, Eun Sang Yoo, Won Kee Lee, Hyun-Hee Kong, Sang-Eun Lee, Won-Ja Lee, Youn-Kyoung Goo, Dong-Il Chung, Yeonchul Hong
Korean J Parasitol 2014;52(5):551-555.
Published online October 22, 2014
DOI: https://doi.org/10.3347/kjp.2014.52.5.551

Trichomonas vaginalis, a causative agent of trichomoniasis, may trigger symptomatic or asymptomatic nongonococcal urethritis and chronic prostatitis in men. Despite the availability of highly sensitive diagnostic tests, such as nucleic acid amplification tests, including PCR, few prospective studies present data on male T. vaginalis infection in South Korea. In the present study, the prevalence of T. vaginalis and associated clinical conditions were evaluated in 201 male patients from a primary care urology clinic in South Korea. The prevalence of T. vaginalis infection in our cohort was 4% (8/201) by PCR. T. vaginalis infection was common in men older than 40 years (median age, 52 years). Among the 8 Trichomonas-positive patients, 87.5% (7/8) had prostatic diseases, such as prostatitis and benign prostatic hyperplasia, and 25.0% (2/8) and 12.5% (1/8) were coinfected with Chlamydia trachomatis and Mycoplasma genitalium, respectively. Our results suggest that T. vaginalis infection is not rare in men attending primary care urology clinics in South Korea, especially in those older than 40 years, in whom it may explain the presence of prostatic disease. The possibility of T. vaginalis infection should be routinely considered in older male patients with prostatic diseases in South Korea.

Citations

Citations to this article as recorded by  Crossref logo
  • Trichomoniasis in Men: A Neglected Factor in Male Infertility?
    Seyed Ali Hosseini, Mohammad Matini, Maryam Bahmanzadeh, Reza Aslani, Faeze Foroughi-Parvar
    Acta Parasitologica.2025;[Epub]     CrossRef
  • Systematic review and meta-analysis of the global prevalence and infection risk factors of Trichomonas vaginalis
    Wenjie Tian, Yuhua Li, Yani Zhang, Yiming Zhang, Yiran Qin, Yalin Han, Dongxian Li, Shuai Wang, Zhenke Yang, Xiaowei Tian, Xuefang Mei, Zhenchao Zhang
    Parasite.2025; 32: 56.     CrossRef
  • Prevalence of trichomoniasis infection among adults in Nigerian community settings
    K. Chukwuemeka Obetta, Innocent Okonkwo Ogbonna, Dorida Nneka Oyigbo, Oliver Onyemaechi Ugwu, Kenneth Okonkwo Ugwu, Beatrice N. Onah, Chinasa Maryrose Ugwunnadi, Joseph O. Acha, Ngozi Uzoamaka Chuke, Ogechi Nkemjika, Onyinyechi Elizabeth Okoye
    Medicine.2023; 102(37): e34585.     CrossRef
  • Prevalence and Genotype of Trichomonas vaginalis among Men in Xinxiang City, Henan Province, China
    Zhenchao Zhang, Yuhui Sang, Pucheng Wu, Yujia Shang, Lesong Li, Yujuan Duan, Linfei Zhao, Minghui Gao, Lihua Guo, Xiaowei Tian, Zhenke Yang, Shuai Wang, Lixia Hao, Xuefang Mei, Jianbing Mu
    Journal of Tropical Medicine.2023; 2023: 1.     CrossRef
  • Inflammatory response to Trichomonas vaginalis in the pathogenesis of prostatitis and benign prostatic hyperplasia
    Ik-Hwan Han, Jung-Hyun Kim, Jae-Sook Ryu
    Parasites, Hosts and Diseases.2023; 61(1): 2.     CrossRef
  • Urogenital Trichomonas vaginalis infection in males: a case report and retrospective analysis of a 10‐year period in a tertiary hospital
    Miguel Alpalhão, Luís Marques‐Lito, Paulo Filipe, João Borges‐Costa
    International Journal of Dermatology.2022;[Epub]     CrossRef
  • Seroprevalence and risk factors of Trichomonas vaginalis among couples in Al-Hamza city-Iraq.
    Musafer H. Al-Ardi
    Al-Kufa University Journal for Biology.2021; 13(1): 26.     CrossRef
  • Comparison of Seropositivity to Trichomonas vaginalis between Men with Prostatic Tumor and Normal Men
    Jung-Hyun Kim, Hong-Sang Moon, Kyu-Shik Kim, Hwan-Sik Hwang, Jae-Sook Ryu, Sung-Yul Park
    The Korean Journal of Parasitology.2019; 57(1): 21.     CrossRef
  • Comparison of Two PCR Assays for Trichomonas vaginalis
    Chang-Suk Noh, Sang-Su Kim, Sung-Yul Park, Hong-Sang Moon, Yeonchul Hong, Jae-Sook Ryu
    The Korean Journal of Parasitology.2019; 57(1): 27.     CrossRef
  • Status of common parasitic diseases in Korea in 2019
    Sun Huh
    Journal of the Korean Medical Association.2019; 62(8): 437.     CrossRef
  • Prevalence of Trichomonas vaginalis in Women Visiting 2 Obstetrics and Gynecology Clinics in Daegu, South Korea
    Youn-Kyoung Goo, Won-Sik Shin, Hye-Won Yang, So-Young Joo, Su-Min Song, Jae-Sook Ryu, Won-Myung Lee, Hyun-Hee Kong, Won-Ki Lee, Sang-Eun Lee, Won-Ja Lee, Dong-Il Chung, Yeonchul Hong
    The Korean Journal of Parasitology.2016; 54(1): 75.     CrossRef
  • Prostatic Disease Associated withTrichomonas vaginalis
    Jae-Sook Ryu
    The Korean Journal of Urogenital Tract Infection and Inflammation.2014; 9(2): 61.     CrossRef
  • 11,534 View
  • 127 Download
  • 13 Web of Science
  • Crossref

Case Report

Two Human Cases of Diphyllobothrium nihonkaiense Infection in Korea
Su-Min Song, Hye-Won Yang, Min Kyu Jung, Jun Heo, Chang Min Cho, Youn-Kyoung Goo, Yeonchul Hong, Dong-Il Chung
Korean J Parasitol 2014;52(2):197-199.
Published online April 18, 2014
DOI: https://doi.org/10.3347/kjp.2014.52.2.197

Diphyllobothrium latum and Diphyllobothrium nihonkaiense are the 2 reported main causes of human diphyllobothriasis in the Republic of Korea. However, the differentiation of these 2 species based on morphologic features alone is difficult. The authors used nucleotide sequencing of the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene to diagnose Diphyllobothrium spp. Two patients visited the emergency room at Kyungpook National University Hospital on 3 April and 12 April 2013, respectively, with fragments of parasites found while defecating. The parasites were identified as Diphyllobothrium spp. based on morphologic characteristics, and subsequent cox1 gene sequencing showed 99.9% similarity (1,478/1,480 bp) with D. nihonkaiense. Our findings support the hypothesis that D. nihonkaiense is a dominant species in Korea.

Citations

Citations to this article as recorded by  Crossref logo
  • Diphyllobothrium nihonkaiense: wide egg size variation in 32 molecularly confirmed adult specimens from Korea
    Seoyun Choi, Jaeeun Cho, Bong-Kwang Jung, Deok-Gyu Kim, Sarah Jiyoun Jeon, Hyeong-Kyu Jeon, Keeseon S. Eom, Jong-Yil Chai
    Parasitology Research.2015; 114(6): 2129.     CrossRef
  • Three Cases of Diphyllobothrium nihonkaiense Infection in Korea
    Hong-Ja Kim, Keeseon S. Eom, Min Seo
    The Korean Journal of Parasitology.2014; 52(6): 673.     CrossRef
  • Extracorporeal Worm Extraction of Diphyllobothrium nihonkaiense with Amidotrizoic Acid in a Child
    Hye Kyung Shin, Joo-Hyung Roh, Jae-Won Oh, Jae-Sook Ryu, Youn-Kyoung Goo, Dong-Il Chung, Yong Joo Kim
    The Korean Journal of Parasitology.2014; 52(6): 677.     CrossRef
  • 9,053 View
  • 100 Download
  • 6 Web of Science
  • Crossref

Original Articles

Loop-Mediated Isothermal Amplification Targeting 18S Ribosomal DNA for Rapid Detection of Acanthamoeba
Hye-Won Yang, Yu-Ran Lee, Noboru Inoue, Bijay Kumar Jha, Dinzouna-Boutamba Sylvatrie Danne, Hong-Kyun Kim, Junhun Lee, Youn-Kyoung Goo, Hyun-Hee Kong, Dong-Il Chung, Yeonchul Hong
Korean J Parasitol 2013;51(3):269-277.
Published online June 30, 2013
DOI: https://doi.org/10.3347/kjp.2013.51.3.269

Amoebic keratitis (AK) caused by Acanthamoeba is one of the most serious corneal infections. AK is frequently misdiagnosed initially as viral, bacterial, or fungal keratitis, thus ensuring treatment delays. Accordingly, the early detection of Acanthamoeba would contribute significantly to disease management and selection of an appropriate anti-amoebic therapy. Recently, the loop-mediated isothermal amplification (LAMP) method has been applied to the clinical diagnosis of a range of infectious diseases. Here, we describe a rapid and efficient LAMP-based method targeting Acanthamoeba 18S rDNA gene for the detection of Acanthamoeba using clinical ocular specimens in the diagnosis of AK. Acanthamoeba LAMP assays detected 11 different strains including all AK-associated species. The copy number detection limit for a positive signal was 10 DNA copies of 18S rDNA per reaction. No cross-reactivity with the DNA of fungi or other protozoa was observed. The sensitivity of LAMP assay was higher than those of Nelson primer PCR and JDP primer PCR. In the present study, LAMP assay based on directly heat-treated samples was found to be as efficient at detecting Acanthamoeba as DNA extracted using a commercial kit, whereas PCR was only effective when commercial kit-extracted DNA was used. This study showed that the devised Acanthamoeba LAMP assay could be used to diagnose AK in a simple, sensitive, and specific manner.

Citations

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  • Ultrasensitive and rapid diagnostic tool for detection of Acanthamoeba castellanii
    Susanna Haapanen, Maarit S. Patrikainen, Seppo Parkkila
    Diagnostic Microbiology and Infectious Disease.2023; 107(2): 116014.     CrossRef
  • A simple and visible detection method for the rapid diagnosis of Ustilaginoidea virens in rice seeds by a loop‐mediated isothermal amplification assay
    Wei Wang, Hang Yin, Ning Huang, Cuijing Zhu, Yufei Wang, Xintong Qi, Lu Ma, Yunxin Fan, Yao Yu, Hongsheng Zhang, Yongmei Bao
    Journal of Phytopathology.2021; 169(6): 369.     CrossRef
  • Efficient nested-PCR-based method development for detection and genotype identification of Acanthamoeba from a small volume of aquatic environmental sample
    Tsui-Kang Hsu, Jung-Sheng Chen, Hsin-Chi Tsai, Chi-Wei Tao, Yu-Yin Yang, Ying-Chin Tseng, Yi-Jie Kuo, Dar-Der Ji, Jagat Rathod, Bing-Mu Hsu
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In vivo determination of the gap2 gene promoter activity in Giardia lamblia
Hye-Won Yang, Juri Kim, Tai-Soon Yong, Soon-Jung Park
Korean J Parasitol 2006;44(1):21-26.
Published online March 20, 2006
DOI: https://doi.org/10.3347/kjp.2006.44.1.21

A shuttle vector for Escherichia coli and Giardia lamblia was modified to produce a reporter plasmid, which monitors the expression of prescribed gene in G. lamblia by measuring its luciferase activity. Promoter regions of the gap2 gene, one of the genes induced during encystation, were cloned into this plasmid, and the resultant constructs were then transfected into trophozoites of G. lamblia. Transgenic trophozoites containing one of the 3 gap2-luc reporters were induced to encystation, and characterized with respect to gap2 gene expression by measuring their luciferase activities. Giardia containing a gap2-luc fusion of 112-bp upstream region showed full induction of luciferase activity during encystation.

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Brief Communication
Axenic cultivation and characterization of Giardia lamblia isolated from humans in Korea
Soon-Jung Park, Tai-Soon Yong, Hye-Won Yang, Du-Ho Lee, Kyungwon Lee
Korean J Parasitol 1999;37(2):121-125.
Published online June 30, 1999
DOI: https://doi.org/10.3347/kjp.1999.37.2.121

Inoculating of human fecal cysts to suckling Mongolian gerbils, two Giardia lamblia isolates, K1 and K2, were established as axenic cultures. Using this in vitro culture, both isolates were characterized as a "medium-rate grower" upon its growth pattern. These two Giardia isolates were grouped by using two genetic analysis. With genetic analysis of SSU-rDNA sequences, both K1 and K2 were found as members of Hopkins' group 1, despite some nucleotide differences noticed in K1 (5 differences/292 bases). The other genetic study used PCR-RFLP of the tim (triose phosphate isomerase) gene. Both of K1 and K2 were found to belong to Nash's group 2. Our results suggest that Nash's group 2 can not be a separate group, but a part of Hopkins' group 1.

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