Parasites, Hosts and Diseases

"Sung-Keun Lee"

Original Article

An Evaluation of a New Quantitative Point-of Care Diagnostic to Measure Glucose-6-phosphate Dehydrogenase Activity: Young Yil Bahk, Seong Kyu Ahn, Heung Jin Jeon, Byoung-Kuk Na, Sung-Keun Lee, Ho-Joon Shin; Korean J Parasitol 2022;60(4):281-288.
Published online August 24, 2022; DOI: https://doi.org/10.3347/kjp.2022.60.4.281

Abstract
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Malaria continues to be one of the most crucial infectious burdens in endemic areas worldwide, as well as for travelers visiting malaria transmission regions. It has been reported that 8-aminoquinolines are effective against the Plasmodium species, particularly primaquine, for anti-hypnozoite therapy in P. vivax malaria. However, primaquine causes acute hemolytic anemia in individuals with glucose-6-phosphate dehydrogenase (G6PD) deficiency. Therefore, G6PD deficiency testing should precede hypnozoite elimination with 8-aminoquinoline. Several point-of-care devices have been developed to detect G6PD deficiency. The aim of the present study was to evaluate the performance of a novel, quantitative G6PD diagnostics based on a metagenomic blue fluorescent protein (mBFP). We comparatively evaluated the sensitivity and specificity of the G6PD diagnostic modality with standard methods using 120 human whole blood samples. The G6PD deficiency was spectrophotometrically confirmed. The performance of the G6PD quantitative test kit was compared with that of a licensed control medical device, the G6PD strip. The G6PD quantitative test kit had a sensitivity of 95% (95% confidence interval (CI): 89.3-100%) and a specificity of 100% (95% CI: 94.3-100%). This study shows that the novel diagnostic G6PD quantitative test kit could be a cost-effective and time-efficient, and universally mandated screening tool for G6PD deficiency.

Citations

Citations to this article as recorded by

Performance of quantitative point-of-care tests to measure G6PD activity: An individual participant data meta-analysis
Arkasha Sadhewa, Ari Winasti Satyagraha, Mohammad Shafiul Alam, Wondimagegn Adissu, Anup Anvikar, Germana Bancone, Praveen K. Bharti, Vinod K. Bhutani, Santasabuj Das, Muzamil Mahdi Abdel Hamid, Mohammad Sharif Hossain, Nitika Nitika, Bernard A. Okech, Ly
PLOS Neglected Tropical Diseases.2025; 19(3): e0012864. CrossRef
Utilization of Glucose-6-Phosphate Dehydrogenase Test and the Prevalence of Enzyme Deficiency in Korea
Rihwa Choi, Wonseo Park, Gayoung Chun, Sang Gon Lee, Eun Hee Lee
Journal of Clinical Medicine.2023; 12(9): 3179. CrossRef

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Brief Communications

Awareness and Opinions of Inhabitants on Vivax Malaria in Two Endemic Areas, Gyeonggi-do, Korea: Young Yil Bahk, Shin-Hyeong Cho, Byoung-Kuk Na, Sung Jong Hong, Sung-Keun Lee, Tong-Soo Kim; Korean J Parasitol 2021;59(5):513-518.
Published online October 22, 2021; DOI: https://doi.org/10.3347/kjp.2021.59.5.513

Abstract
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The incidence of vivax malaria in Korea was reduced to a low plateau. For successful elimination of vivax malaria, socio-behavioral changes in the communities are essential. This study aimed to figure out awareness of the inhabitants on the vivax malaria endemicity. The 407 participants including vivax malaria patients and uninfected inhabitants in Gimpo- and Paju-si, Gyeonggi-do, known as high-risk areas in Korea. We used a community-based study design and non-probability sampling method using primary data. Except for the perception about the public health facilities’ capability to cope with anti-malaria programs, the 2 groups of participants shared the same level of awareness about public promotional and educational measures and opinions for malaria elimination from the community. Thus, our future goals for malaria prevention and elimination are to develop more active and well-organized community-based education and evaluation programs collaborating with the community healthcare authorities and local governments.

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Seroprevalence of Plasmodium vivax Circumsporozoite Protein Antibody in High-Risk Malaria Areas in Korea: Jinyoung Lee, Kyoung Jin, Seong Kyu Ahn, Sung-Keun Lee, Hyung Wook Kwon, Byoung-Kuk Na, Tong-Soo Kim; Korean J Parasitol 2021;59(4):415-419.
Published online August 18, 2021; DOI: https://doi.org/10.3347/kjp.2021.59.4.415

The circumsporozoite protein (CSP) of Plasmodium spp. is a diagnostic antigen and useful biomarker for monitoring short-term/seasonal changes to malaria transmission. Using P. vivax CSP antibody ELISA, epidemiological characteristics were analyzed in the residents of Ganghwa, Cheorwon, Paju, and Goseong from 2017 to 2018. In Ganghwa and Cheorwon, 1.6% and 1.2% of residents, respectively, were PvCSP-antibody-positive in 2018, which indicates a decrease of 0.4% in the positive rate compared to 2017. The annual parasite incidence (API) in Ganghwa and Cheorwon was 24.9 and 10.5 in 2017 and 20.3 and 10.7 in 2018, respectively. Although the changes were not significant, the API in Ganghwa decreased slightly by 4.5 in 2018 compared to the previous year. In Paju and Goseong, 3.9% and 2.0% of residents were positive for the PvCSP antibody. The API in Paju was 13.1 in 2017 and 16.0 in 2018, although no malaria patients were reported for the 2 years. Therefore, the results suggest that PvCSP is a useful antigen for confirming initial malaria infection. Additionally, considering that the antibody is relatively transient, it can be employed for sero-epidemiological studies to determine the extent of malaria transmission in the current year.

Citations

Citations to this article as recorded by

Using Serological Markers for the Surveillance of Plasmodium vivax Malaria: A Scoping Review
Lejla Kartal, Ivo Mueller, Rhea J. Longley
Pathogens.2023; 12(6): 791. CrossRef
Mosquirix™ RTS, S/AS01 Vaccine Development, Immunogenicity, and Efficacy
Aroosa Younis Nadeem, Adeeb Shehzad, Salman Ul Islam, Ebtesam A. Al-Suhaimi, Young Sup Lee
Vaccines.2022; 10(5): 713. CrossRef
Serological responses to a soluble recombinant circumsporozoite protein-VK210 of Plasmodium vivax (rPvCSP-VK210) among Iranian malaria patients
Mehdi Nateghpour, Soudabeh Etemadi, Afsaneh Motevalli Haghi, Hamid Eslami, Mehdi Mohebali, Leila Farivar
European Journal of Medical Research.2021;[Epub] CrossRef

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Original Articles

Evaluation of the Accuracy of the EasyTest™ Malaria Pf/Pan Ag, a Rapid Diagnostic Test, in Uganda: Chom-Kyu Chong, Pyo Yun Cho, Byoung-Kuk Na, Seong Kyu Ahn, Jin Su Kim, Jin-Soo Lee, Sung-Keun Lee, Eun-Taek Han, Hak-Yong Kim, Yun-Kyu Park, Seok Ho Cha, Tong-Soo Kim; Korean J Parasitol 2014;52(5):501-505.
Published online October 22, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.5.501

Abstract
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In recent years, rapid diagnostic tests (RDTs) have been widely used for malaria detection, primarily because of their simple operation, fast results, and straightforward interpretation. The Asan EasyTest™ Malaria Pf/Pan Ag is one of the most commonly used malaria RDTs in several countries, including Korea and India. In this study, we tested the diagnostic performance of this RDT in Uganda to evaluate its usefulness for field diagnosis of malaria in this country. Microscopic and PCR analyses, and the Asan EasyTest™ Malaria Pf/Pan Ag rapid diagnostic test, were performed on blood samples from 185 individuals with suspected malaria in several villages in Uganda. Compared to the microscopic analysis, the sensitivity of the RDT to detect malaria infection was 95.8% and 83.3% for Plasmodium falciparum and non-P. falciparum, respectively. Although the diagnostic sensitivity of the RDT decreased when parasitemia was ≤500 parasites/?l, it showed 96.8% sensitivity (98.4% for P. falciparum and 93.8% for non-P. falciparum) in blood samples with parasitemia ≥100 parasites/?l. The specificity of the RDT was 97.3% for P. falciparum and 97.3% for non-P. falciparum. These results collectively suggest that the accuracy of the Asan EasyTest™ Malaria Pf/Pan Ag makes it an effective point-of-care diagnostic tool for malaria in Uganda.

Citations

Citations to this article as recorded by

Asymptomatic malaria infection, associated factors and accuracy of diagnostic tests in a historically high transmission setting in Northern Uganda
Bosco B. Agaba, Simon P. Rugera, Ruth Mpirirwe, Martha Atekat, Samuel Okubal, Khalid Masereka, Miseal Erionu, Bosco Adranya, Gertrude Nabirwa, Patrick B. Odong, Yasin Mukiibi, Isaac Ssewanyana, Susan Nabadda, Enoch Muwanguzi
Malaria Journal.2022;[Epub] CrossRef
Genetic diversity of Plasmodium vivax and Plasmodium falciparum lactate dehydrogenases in Myanmar isolates
Jinyoung Lee, Tae Im Kim, Hương Giang Lê, Won Gi Yoo, Jung-Mi Kang, Seong-Kyu Ahn, Moe Kyaw Myint, Khin Lin, Tong-Soo Kim, Byoung-Kuk Na
Malaria Journal.2020;[Epub] CrossRef
Limitations of rapid diagnostic tests in malaria surveys in areas with varied transmission intensity in Uganda 2017-2019: Implications for selection and use of HRP2 RDTs
Agaba B. Bosco, Joaniter I. Nankabirwa, Adoke Yeka, Sam Nsobya, Karryn Gresty, Karen Anderson, Paul Mbaka, Christiane Prosser, David Smith, Jimmy Opigo, Rhoda Namubiru, Emmanuel Arinaitwe, John Kissa, Samuel Gonahasa, Sungho Won, Bora Lee, Chae Seung Lim,
PLOS ONE.2020; 15(12): e0244457. CrossRef
An Update on Malaria Rapid Diagnostic Tests
Avinash N. Mukkala, Jason Kwan, Rachel Lau, David Harris, Dylan Kain, Andrea K. Boggild
Current Infectious Disease Reports.2018;[Epub] CrossRef
Comparative Assessment of Diagnostic Performances of Two Commercial Rapid Diagnostic Test Kits for Detection of Plasmodium spp. in Ugandan Patients with Malaria
Young Yil Bahk, Seo Hye Park, Woojoo Lee, Kyoung Jin, Seong Kyu Ahn, Byoung-Kuk Na, Tong-Soo Kim
The Korean Journal of Parasitology.2018; 56(5): 447. CrossRef
An Evaluation of Active Case Detection in Malaria Control Program in Kiyuni Parish of Kyankwanzi District, Uganda
Young Yil Bahk, Pyo Yun Cho, Seong Kyu Ahn, Woo-Joo Lee, Tong-Soo Kim
The Korean Journal of Parasitology.2018; 56(6): 625. CrossRef
Comparison of the diagnostic performance of microscopic examination with nested polymerase chain reaction for optimum malaria diagnosis in Upper Myanmar
Jung-Mi Kang, Pyo-Yun Cho, Mya Moe, Jinyoung Lee, Hojong Jun, Hyeong-Woo Lee, Seong Kyu Ahn, Tae Im Kim, Jhang Ho Pak, Moe Kyaw Myint, Khin Lin, Tong-Soo Kim, Byoung-Kuk Na
Malaria Journal.2017;[Epub] CrossRef
A Cluster Randomised Trial Introducing Rapid Diagnostic Tests into Registered Drug Shops in Uganda: Impact on Appropriate Treatment of Malaria
Anthony K. Mbonye, Pascal Magnussen, Sham Lal, Kristian S. Hansen, Bonnie Cundill, Clare Chandler, Siân E. Clarke, Roly D Gosling
PLOS ONE.2015; 10(7): e0129545. CrossRef

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111 Download
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Seroprevalence of Plasmodium vivax in the Republic of Korea (2003-2005) using Indirect Fluorescent Antibody Test: Tong-Soo Kim, Yoon-Joong Kang, Won-Ja Lee, Byoung-Kuk Na, Sung-Ung Moon, Seok Ho Cha, Sung-Keun Lee, Yun-Kyu Park, Jhang-Ho Pak, Pyo Yun Cho, Youngjoo Sohn, Hyeong-Woo Lee; Korean J Parasitol 2014;52(1):1-7.
Published online February 19, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.1.1

Abstract
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Plasmodium vivax reemerged in the Republic of Korea (ROK) in 1993, and is likely to continue to affect public health. The purpose of this study was to measure levels of anti-P. vivax antibodies using indirect fluorescent antibody test (IFAT) in border areas of ROK, to determine the seroprevalence of malaria (2003-2005) and to plan effective control strategies. Blood samples of the inhabitants in Gimpo-si, Paju-si, and Yeoncheon-gun (Gyeonggi-do), and Cheorwon-gun (Gangwon-do) were collected and kept in Korea Centers for Disease Control and Prevention (KCDC). Out of a total of 1,774 serum samples tested, the overall seropositivity was 0.94% (n=17). The seropositivity was the highest in Paju-si (1.9%, 7/372), followed by Gimpo-si (1.4%, 6/425), Yeoncheon-gun (0.67%, 3/451), and Cheorwon-gun (0.19%, 1/526). The annual parasite incidence (API) in these areas gradually decreased from 2003 to 2005 (1.69, 1.09, and 0.80 in 2003, 2004, and 2005, respectively). The highest API was found in Yeoncheon-gun, followed by Cheorwon-gun, Paju-si, and Gimpo-si. The API ranking in these areas did not change over the 3 years. The seropositivity of Gimpo-si showed a strong linear relationship with the API of 2005 (r=0.9983, P=0.036). Seropositivity data obtained using IFAT may be useful for understanding malaria prevalence of relevant years, predicting future transmission of malaria, and for establishing and evaluating malaria control programs in affected areas.

Citations

Citations to this article as recorded by

Using Serological Markers for the Surveillance of Plasmodium vivax Malaria: A Scoping Review
Lejla Kartal, Ivo Mueller, Rhea J. Longley
Pathogens.2023; 12(6): 791. CrossRef