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Sahyun Hong 5 Articles
Genome Sequencing Analysis of Atypical Shigella flexneri Isolated in Korea
Nan-Ok Kim, Hae-young Na, Su-Mi Jung, Gyung Tae Chung, Hyo Sun Kawk, Sahyun Hong
Osong Public Health Res Perspect. 2017;8(1):78-85.   Published online February 28, 2017
DOI: https://doi.org/10.24171/j.phrp.2017.8.1.11
  • 4,673 View
  • 26 Download
  • 1 Crossref
AbstractAbstract PDFSupplementary Material
Objectives

An atypical Shigella flexneri strain with a plural agglutination pattern [i.e., reacting not only with serum samples containing type antigen II but also with serum samples containing group antigens (3)4 and 7(8)] was selected for genome sequencing, with the aim of obtaining additional comparative information about such strains.

Methods

The genomic DNA of atypical S. flexneri strain NCCP 15744 was sequenced using an Ion Torrent PGM sequencing machine (Life Technologies, USA). The raw sequence data were preprocessed and reference-assembled in the CLC Assembly Cell software (version 4.0.6; CLC bio, USA).

Results

Ion Torrent sequencing produced 1,450,025 single reads with an average length of 144 bp, totaling ~209 Mbp. The NCCP 15744 genome is composed of one chromosome and four plasmids and contains a gtrX gene. Among the published genome sequences of S. flexneri strains, including 2457T, Sf301, and 2002017, strain NCCP 15744 showed high similarity with strain 2002017. The differences between NCCP 15744 and 2002017 are as follows: i) NCCP 15744 carries four plasmids whereas 2002017 carries five; ii) 19 genes (including CI, CII, and cro) were lost in the SHI-O genomic island of NCCP 15744 and six genes were gained as compared with strain 2002017.

Conclusion

Strain NCCP 15744 is genetically similar to 2002017, but these two strains have different multilocus sequence types and serotypes. The exact reason is unclear, but the 19 lost genes may be responsible for the atypical seroconversion of strain NCCP 15744.

Citations

Citations to this article as recorded by  
  • Genomic and proteomic characterization of two strains of Shigella flexneri 2 isolated from infants’ stool samples in Argentina
    Mónica F. Torrez Lamberti, Lucrecia C. Terán, Fabián E. Lopez, María de las Mercedes Pescaretti, Mónica A. Delgado
    BMC Genomics.2022;[Epub]     CrossRef
Surveillance of Bacillus cereus Isolates in Korea from 2012 to 2014
Su-Mi Jung, Nan-Ok Kim, Injun Cha, Hae-young Na, Gyung Tae Chung, Hyo Sun Kawk, Sahyun Hong
Osong Public Health Res Perspect. 2017;8(1):71-77.   Published online February 28, 2017
DOI: https://doi.org/10.24171/j.phrp.2017.8.1.10
  • 5,060 View
  • 42 Download
  • 5 Crossref
AbstractAbstract PDF
Objectives

To investigate the prevalence and toxin production characteristics of non-emetic and emetic Bacillus cereus strains isolated via the laboratory surveillance system in Korea.

Methods

A total of 667 B. cereus strains were collected by the Korea National Research Institute of Health laboratory surveillance system from 2012 to 2014. The collected strains were analyzed by geographical region, season, patient age, and patient sex. Additionally, the prevalence rates of enterotoxin and emetic toxin genes were evaluated.

Results

The isolation rate of B. cereus strains increased during the summer, but the isolation rate was evenly distributed among patient age groups. Emetic toxin was produced by 20.2% of the isolated strains. The prevalence rates of five enterotoxin genes (entFM, nheA, cytK2, hblC, and bceT) were 85.0, 78.6, 44.5, 36.6, and 29.7%, respectively, among non-emetic strains and 77.8, 59.3, 17.8, 11.9 and 12.6%, respectively, among emetic strains. Thus, the prevalence rates of all five enterotoxin genes were lower in emetic B. cereus.

Conclusion

The prevalence of enterotoxin genes differed between non-emetic and emetic B. cereus strains. Among emetic B. cereus strains, the prevalence rates of two enterotoxin genes (cytK2 and hblC) were lower than those among the non-emetic strains. In both the emetic and non-emetic strains isolated in Korea, nheA and entFM were the most prevalent enterotoxin genes.

Citations

Citations to this article as recorded by  
  • Toxigenic diversity of Bacillus cereus isolated from fresh produce and effects of various factors on the growth and the cytotoxicity of B. cereus
    Areum Han, Jae-Hyun Yoon, Yun-Sun Choi, Yujin Bong, Gyusuck Jung, Sung-Kwon Moon, Sun-Young Lee
    Food Science and Biotechnology.2024; 33(1): 219.     CrossRef
  • Bacillus cereus containing nheA, hblC and cytk enterotoxin genes is associated with acute childhood gastroenteritis in Nigeria
    Ebuka E. David, Ikechuku O. Igwenyi, Ifeanyichukwu R. Iroha, Layla F. Martins, Guillermo Uceda-Campos, Aline M. da Silva
    Indian Journal of Medical Microbiology.2024; 51: 100666.     CrossRef
  • A study on toxin genes and cytotoxicity levels of Bacillus cereus in various ready-to-eat foods and pastry products in Turkey
    Başak Gökçe ÇÖL, Harun AKSU
    Journal of Istanbul Veterinary Sciences.2022; 6(3): 152.     CrossRef
  • Autoinducer-2 Could Affect Biofilm Formation by Food-Derived Bacillus cereus
    Nari Lee, Myo-Deok Kim, Min-Cheol Lim
    Indian Journal of Microbiology.2021; 61(1): 66.     CrossRef
  • Effects of Low-Temperature Drying with Intermittent Gaseous Chlorine Dioxide Treatment on Texture and Shelf-Life of Rice Cakes
    Timilehin Martins Oyinloye, Won Byong Yoon
    Processes.2020; 8(3): 375.     CrossRef
Enteric Bacteria Isolated from Diarrheal Patients in Korea in 2014
Nan-Ok Kim, Su-Mi Jung, Hae-Young Na, Gyung Tae Chung, Cheon-Kwon Yoo, Won Keun Seong, Sahyun Hong
Osong Public Health Res Perspect. 2015;6(4):233-240.   Published online August 31, 2015
DOI: https://doi.org/10.1016/j.phrp.2015.07.005
  • 3,774 View
  • 26 Download
  • 15 Crossref
AbstractAbstract PDFSupplementary Material
Objectives
The aim of this study was to characterize the pathogens responsible for causing diarrhea according to season, region of isolation, patient age, and sex as well as to provide useful data for the prevention of diarrheal disease.
Methods
Stool specimens from 14,886 patients with diarrhea were collected to identify pathogenic bacteria from January 2014 to December 2014 in Korea. A total of 3,526 pathogenic bacteria were isolated and analyzed according to season, region of isolation, and the age and sex of the patient.
Results
The breakdown of the isolated pathogenic bacteria were as follows: Salmonella spp. 476 (13.5%), pathogenic Escherichia coli 777 (22.0%), Vibrio parahaemolyticus 26 (0.74%), Shigella spp. 13 (0.37%), Campylobacter spp. 215 (6.10%), Clostridium perfringens 508 (14.4%), Staphylococcus aureus 1,144 (32.4%), Bacillus cereus 356 (10.1%), Listeria monocytogenes 1 (0.03%), and Yersinia enterocolitica 10 (0.3%). The isolation rate trend showed the highest ratio in the summer season from June to September for most of the pathogenic bacteria except the Gram-positive bacteria. The isolation rate of most of the pathogenic bacteria by patient age showed highest ratio in the 0–19 year age range. For isolation rate by region, 56.2% were isolated from cities and 43.8% were isolated from provinces.
Conclusion
Hygiene education should be addressed for diarrheal disease-susceptible groups, such as those younger than 10 years, aged 10–19 years, and older than 70 years, and monitoring for the pathogens is still required. In addition, an efficient laboratory surveillance system for infection control should be continued.

Citations

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  • Antimicrobial Susceptibility Patterns and Genetic Diversity of Campylobacter spp. Isolates from Patients with Diarrhea in South Korea
    So Yeon Kim, Dongheui An, Hyemi Jeong, Jonghyun Kim
    Microorganisms.2024; 12(1): 94.     CrossRef
  • Comparative evaluation of two molecular multiplex syndromic panels with acute gastroenteritis
    Kuenyoul Park, Bo-Moon Shin
    Diagnostic Microbiology and Infectious Disease.2024; 109(1): 116211.     CrossRef
  • Antimicrobial Resistance Profiles and Molecular Characteristics of Salmonella enterica Serovar Agona Isolated from Food-Producing Animals During 2010–2020 in South Korea
    Hyun-Ju Song, Sekendar Ali, Bo-Youn Moon, Hee Young Kang, Eun Jeong Noh, Tae-Sun Kim, Su-Jeong Kim, Ji-In Kim, Yun Jin Lee, Soon-Seek Yoon, Suk-Kyung Lim
    Foodborne Pathogens and Disease.2024;[Epub]     CrossRef
  • An Outbreak of Campylobacter Jejuni Involving Healthcare Workers Detected by COVID-19 Healthcare Worker Symptom Surveillance
    Hye Jin Shi, Jae Baek Lee, Shinhee Hong, Joong Sik Eom, Yoonseon Park
    Korean Journal of Healthcare-Associated Infection .2023; 28(1): 172.     CrossRef
  • Plant-derived nanoparticles as alternative therapy against Diarrheal pathogens in the era of antimicrobial resistance: A review
    Tesleem Olatunde Abolarinwa, Daniel Jesuwenu Ajose, Bukola Opeyemi Oluwarinde, Justine Fri, Kotsoana Peter Montso, Omolola Esther Fayemi, Adeyemi Oladapo Aremu, Collins Njie Ateba
    Frontiers in Microbiology.2022;[Epub]     CrossRef
  • Prevalence, co-infection and seasonality of fecal enteropathogens from diarrheic cats in the Republic of Korea (2016–2019): a retrospective study
    Ye-In Oh, Kyoung-Won Seo, Do-Hyung Kim, Doo-Sung Cheon
    BMC Veterinary Research.2021;[Epub]     CrossRef
  • Genotyping and antimicrobial susceptibility of Clostridium perfringens isolated from dromedary camels, pastures and herders
    Mahmoud Fayez, Ibrahim Elsohaby, Theeb Al-Marri, Kamal Zidan, Ali Aldoweriej, Elham El-Sergany, Ahmed Elmoslemany
    Comparative Immunology, Microbiology and Infectiou.2020; 70: 101460.     CrossRef
  • Comparative Analysis of Aerotolerance, Antibiotic Resistance, and Virulence Gene Prevalence in Campylobacter jejuni Isolates from Retail Raw Chicken and Duck Meat in South Korea
    Jinshil Kim, Hyeeun Park, Junhyung Kim, Jong Hyun Kim, Jae In Jung, Seongbeom Cho, Sangryeol Ryu, Byeonghwa Jeon
    Microorganisms.2019; 7(10): 433.     CrossRef
  • Guideline for the Antibiotic Use in Acute Gastroenteritis
    Youn Jeong Kim, Ki-Ho Park, Dong-Ah Park, Joonhong Park, Byoung Wook Bang, Seung Soon Lee, Eun Jung Lee, Hyo-Jin Lee, Sung Kwan Hong, Yang Ree Kim
    Infection & Chemotherapy.2019; 51(2): 217.     CrossRef
  • Winning the War against Multi-Drug Resistant Diarrhoeagenic Bacteria
    Chizoba Mercy Enemchukwu, Angus Nnamdi Oli, Ebere Innocent Okoye, Nonye Treasure Ujam, Emmanuel O. Osazuwa, George Ogonna Emechebe, Kenneth Nchekwube Okeke, Christian Chukwuemeka Ifezulike, Obiora Shedrack Ejiofor, Jude Nnaemeka Okoyeh
    Microorganisms.2019; 7(7): 197.     CrossRef
  • Molecular Characterization of Enterotoxigenic Escherichia coli in Foodborne Outbreak
    Sang-Hun Park, Hyun-Jung Seung, Hyo-Won Jeong, So-Yun Park, Ji-Hun Jung, Young-Hee Jin, Sung-Hee Han, Hee-Soon Kim, Jin-Seok Kim, Joo-Hyun Park, Ye-Ji Gong, Chae Kyu Hong, Jib-Ho Lee, Il-Young Kim, Kweon Jung
    Journal of Bacteriology and Virology.2018; 48(4): 113.     CrossRef
  • Epidemiology of Listeria monocytogenes prevalence in foods, animals and human origin from Iran: a systematic review and meta-analysis
    Reza Ranjbar, Mehrdad Halaji
    BMC Public Health.2018;[Epub]     CrossRef
  • The Epidemiological Influence of Climatic Factors on Shigellosis Incidence Rates in Korea
    Yeong-Jun Song, Hae-Kwan Cheong, Myung Ki, Ji-Yeon Shin, Seung-sik Hwang, Mira Park, Moran Ki, Jiseun Lim
    International Journal of Environmental Research an.2018; 15(10): 2209.     CrossRef
  • Molecular characterization and antimicrobial resistance profile of Clostridium perfringens type A isolates from humans, animals, fish and their environment
    Jay Prakash Yadav, Suresh Chandra Das, Pankaj Dhaka, Deepthi Vijay, Manesh Kumar, Asish Kumar Mukhopadhyay, Goutam Chowdhury, Pranav Chauhan, Rahul Singh, Kuldeep Dhama, Satya Veer Singh Malik, Ashok Kumar
    Anaerobe.2017; 47: 120.     CrossRef
  • Molecular characterization of antimicrobial resistant non-typhoidal Salmonella from poultry industries in Korea
    Jin Eui Kim, Young ju Lee
    Irish Veterinary Journal.2017;[Epub]     CrossRef
Enhanced Type III Secretion System Expression of Atypical Shigella flexneri II:(3)4,7(8)
Sahyun Hong, Injun Cha, Nan-Ok Kim, Seong-Han Kim, Kyung-Tae Jung, Je-Hee Lee, Dong-Wook Kim, Mi-Sun Park, Yeon-Ho Kang
Osong Public Health Res Perspect. 2012;3(4):222-228.   Published online December 31, 2012
DOI: https://doi.org/10.1016/j.phrp.2012.10.002
  • 2,810 View
  • 20 Download
AbstractAbstract PDF
Objectives
We aimed at evaluating the virulence of atypical Shigella flexneri II:(3)4,7(8) by DNA microarray and invasion assay.
Methods
We used a customized S. flexneri DNA microarray to analyze an atypical S. flexneri II:(3)4,7(8) gene expression profile and compared it with that of the S. flexneri 2b strain.
Results
Approximately one-quarter of the atypical S. flexneri II:(3)4,7(8) strain genes showed significantly altered expression profiles; 344 genes were more than two-fold upregulated, and 442 genes were more than 0.5-fold downregulated. The upregulated genes were divided into the category of 21 clusters of orthologous groups (COGs), and the “not in COGs” category included 170 genes. This category had virulence plasmid genes, including the ipa-mxi-spa genes required for invasion of colorectal epithelium (type III secretion system). Quantitative reverse-transcription polymerase chain reaction results also showed the same pattern in two more atypical S. flexneri II:(3)4,7(8) strains. Atypical S. flexneri II:(3)4,7(8) showed four times increased invasion activity in Caco-2 cells than that of typical strains.
Conclusion
Our results provide the intracellularly regulated genes that may be important for adaptation and growth strategies of this atypical S. flexneri.
Prevalence of Farm and Slaughterhouse Workers Carrying Shiga Toxin-Producing Escherichia coli in Korea
Sahyun Hong, Seung Eun Song, Kyung Hwan Oh, Seung Hak Kim, Seok ju Yoo, Hyun Sul Lim, Mi Sun Park
Osong Public Health Res Perspect. 2011;2(3):198-201.   Published online December 31, 2011
DOI: https://doi.org/10.1016/j.phrp.2011.11.045
  • 3,250 View
  • 18 Download
  • 2 Crossref
AbstractAbstract PDF
Objectives
The aim of this study was to investigate the distribution of Shiga toxin (Stx) gene-positive stool samples from dairy farmer and slaughterhouse workers in Gyeonggi-Do province.
Methods
A total of 621 samples from healthy farmers and 198 samples from slaughterhouse workers were screened by polymerase chain reaction (PCR) for Shiga toxigenic Escherichia coli (STEC) infection on stool samples.
Results
The PCR product of Stx-encoding genes was detected in 21 (3.4%) of 621 farmers and 15 (7.6%) of 198 slaughterhouse workers’ stool samples. Distribution of the Stx PCR positive workers by age increment revealed an increase in STEC infection with age increment in both workers. Distribution of the Stx PCR positive workers by working years revealed an increase in STEC infection with working years in farmers.
Conclusion
These results of the study show that slaughterhouse workers are at higher risk of STEC infection than farmers. In addition, slaughterhouse workers have a more potential source of food contamination of STEC and transmission.

Citations

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    Journal of Public Health Management and Practice.2024; 30(1): 36.     CrossRef
  • Prevalence and characteristics of Shiga toxin-producingEscherichia coli(STEC) from cattle in Korea between 2010 and 2011
    Eun Kang, Sun Young Hwang, Ka Hee Kwon, Ki Yeon Kim, Jae Hong Kim, Yong Ho Park
    Journal of Veterinary Science.2014; 15(3): 369.     CrossRef

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