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Chong-Ku Yun	2 Articles
Is Pneumocystis carinii vertically transmitted to neonatal rats? Sung-Tae Hong, Yun-Kyu Park, Jin Kim, Dug-Ha Kim, Chong-Ku Yun Korean J Parasitol 1999;37(3):149-156. Published online September 30, 1999 DOI: https://doi.org/10.3347/kjp.1999.37.3.149 Abstract PDF Pneumocystis carinii is a pulmonary pathogen of immunocompromised humans or other mammals. Its infection results from activation of organisms involved in latent infection or from new infection through the air. Almost all children are known to be infected within 2 to 4 years of birth, though prenatal transplacental transmission has not yet been demonstrated. In this study we observed experimental P. carinii infection in neonatal rats, thus investigating the possibility of transplacental vertical transmission by Diff-Quik staining of the lung impression smears and in-situ hybridization for lung sections. The positive rate of P. carinii infection in immunosuppressed maternal rats was 100%, but that in normal maternal rats was 0%. Cystic forms of P. carinii were observed in three of six 1-week old neonatal rats born of heavily infected mothers, but none of them was positive by in-situ hybridization. Five weeks after birth, cystic forms were detected in four neonatal rats. In the lobes of the lungs, no predilection site of P. carinii was recognized. Counts of cystic forms on smears and the reactivity of in-situ hybridization in the lungs of neonatal rats were significantly lower than in maternal rats. The present findings suggest that P. carinii is rarely transmitted through the placenta and proliferates less successfully in the lungs of neonatal rats than in mothers. Citations Citations to this article as recorded by Pneumocystis Infection in Pregnant Women: A Scoping Review Irene Calderón-Baturone, Rocío Salsoso, Elena Charpentier, Yaxsier de Armas, Pilar Guadix, Rubén Morilla, Enrique J. Calderón, Vicente Friaza Journal of Fungi.2025; 11(4): 327. CrossRef High transient colonization by Pneumocystis jirovecii between mothers and newborn Cristian Vera, Yudy A. Aguilar, Lázaro A. Vélez, Zulma Vanessa Rueda European Journal of Pediatrics.2017; 176(12): 1619. CrossRef Pathobiology ofPneumocystispneumonia: life cycle, cell wall and cell signal transduction Joseph H. Skalski, Theodore J. Kottom, Andrew H. Limper, Carol Munro FEMS Yeast Research.2015; 15(6): fov046. CrossRef Early Acquisition of Pneumocystis carinii in Neonatal Rats as Evidenced by PCR and Oral Swabs Crystal R. Icenhour, Sandra L. Rebholz, Margaret S. Collins, Melanie T. Cushion Eukaryotic Cell.2002; 1(3): 414. CrossRef Localization of cytoskeletal proteins in Pneumocystis carinii by immuno-electron microscopy Jae-Ran Yu, Jae-Kyong Pyon, Min Seo, Byung-Suk Jung, Sang Rock Cho, Soon-Hyung Lee, Sung-Tae Hong The Korean Journal of Parasitology.2001; 39(1): 13. CrossRef Early Acquisition of Pneumocystis carinii in Neonatal Rats using Targeted PCR and Oral Swabs CRYSTAL R. ICENHOUR, SANDRA L. REBHOLZ, MARGARET S. COLLINS, MELANIE T. CUSHION Journal of Eukaryotic Microbiology.2001;[Epub] CrossRef Pneumocystis infections: the iceberg? E. Dei-Cas Medical Mycology.2000; 38(s1): 23. CrossRef 8,931 View 66 Download Crossref Toxoplasma gondii antibody titers in sera of children admitted to the Seoul National University Children's Hospital Jina Kook, Hong-Jin Lee, Beyong Il Kim, Chong-Ku Yun, Sang-Mee Guk, Min Seo, Yun-Kyu Park, Sung-Tae Hong, Jong-Yil Chai Korean J Parasitol 1999;37(1):27-32. Published online March 20, 1999 DOI: https://doi.org/10.3347/kjp.1999.37.1.27 Abstract PDF A total of 542 children under 10 years of age, admitted to the Seoul National University Children's Hospital, was examined for antibody titers of Toxoplasma gondii using indirect latex agglutination (ILA) test. Among them, 7.7% showed positive titers higher than 1:32, without significant difference between males (7.3%) and females (8.5%). The seropositive rate increased with age although the statistical significance was negligible (0.05<P<0.1). By residential areas, the prevalence appeared higher among children from southern provinces (Kyongsang-do and Cholla-do) than those from other areas, but the statistical significance was also very low (0.05<P<0.1). When the seropositive cases were analyzed by coincidental diseases, the prevalence was significantly higher in patients with congenital diseases than in patients with non-congenital diseases (P<0.05). The results showed that the seropositive rate of toxoplasmosis in children examined was not high compared with other endemic countries. Some correlations are suggested between toxoplasmosis and congenital anomalies in Korea. Citations Citations to this article as recorded by Seroprevalence and Molecular Investigation of Toxoplasmosis Among Working Children in Tehran Farah Bokharaei-Salim, Khadijeh Khanaliha, Shirin Sayyahfar, Mohsen Sadeghi, Ahmad Tavakoli, Borna Salemi Archives of Pediatric Infectious Diseases.2022;[Epub] CrossRef Molecular Detection of Toxoplasma Gondii in Haemaphysalis Ticks in Korea Ju Yeong Kim, You Shine Kwak, In-Yong Lee, Tai-Soon Yong The Korean Journal of Parasitology.2020; 58(3): 327. CrossRef Seroprevalence of Toxoplasma gondii among a group of Egyptian patients with type I diabetes mellitus Hala M. Khattab, Safeya O. El Bassiouni, Manal H. Abuelela, Dalia O. Abd Elsalam Bulletin of the National Research Centre.2019;[Epub] CrossRef Seroprevalence of anti-Toxoplasma IgG and IgM among individuals who were referred to medical laboratories in Mazandaran province, northern Iran Mehdi Sharif, Ahmad Daryani, Zahra Ebrahimnejad, Shirzad Gholami, Ehsan Ahmadpour, Samaneh Borhani, Narges Lamsechi Journal of Infection and Public Health.2016; 9(1): 75. CrossRef Toxoplasma gondii infection: seroprevalence and associated risk factors among primary schoolchildren in Lagos City, Southern Nigeria Vincent Pam Gyang, Olaoluwa Pheabian Akinwale, Yueh-Lun Lee, Ting-Wu Chuang, Akwaowo Orok, Olusola Ajibaye, Chien-Wei Liao, Po-Ching Cheng, Chia-Mei Chou, Ying-Chieh Huang, Kuo-Hua Fan, Chia-Kwung Fan Revista da Sociedade Brasileira de Medicina Tropical.2015; 48(1): 56. CrossRef Prevalence of toxoplasmosis in France in 1998: Is there a difference between men and women? At what age do children become infected? H. Bellali, H. Pelloux, I. Villena, H. Fricker-Hidalgo, Y. Le Strat, V. Goulet Revue d'Épidémiologie et de Santé Publique.2013; 61(4): 311. CrossRef Toxoplasma gondii infection: relationship between seroprevalence and risk factors among primary schoolchildren in the capital areas of Democratic Republic of São Tomé and Príncipe, West Africa Chia-Kwung Fan, Lin-Wen Lee, Chien-Wei Liao, Ying-Chieh Huang, Yueh-Lun Lee, Yu-Tai Chang, Ângela dos Santos Ramos José da Costa, Vilfrido Gil, Li-Hsing Chi, Takeshi Nara, Akiko Tsubouchi, Olaoluwa Pheabian Akinwale Parasites & Vectors.2012;[Epub] CrossRef Serologic Survey of Toxoplasmosis in Seoul and Jeju-do, and a Brief Review of Its Seroprevalence in Korea Hyemi Lim, Sang-Eun Lee, Bong-Kwang Jung, Min-Ki Kim, Mi Youn Lee, Ho-Woo Nam, Jong-Gyun Shin, Cheong-Ha Yun, Han-Ik Cho, Eun-Hee Shin, Jong-Yil Chai The Korean Journal of Parasitology.2012; 50(4): 287. CrossRef Seroprevalence and Incidence of Toxoplasma gondii among Apparently Healthy and Visually or Hearing Disabled Children in Taiz City, Yemen Madha Mohammed Sheet Saleh, Adam Hezam AL-Shamiri, Abeer Ahmed Qaed The Korean Journal of Parasitology.2010; 48(1): 71. CrossRef Seroprevalence ofToxoplasmagondiiinfection among children in Swaziland, southern Africa C. W. Liao, Y. L. Lee, H. Sukati, P. D'lamini, Y. C. Huang, C. J. Chiu, Y. H. Liu, C. M. Chou, W. T. Chiu, W. Y. Du, C. C. Hung, H. C. Chan, B. Chu, H. C. Cheng, J. Su, C. C. Tu, C. Y. Cheng, C. K. Fan Annals of Tropical Medicine & Parasitology.2009; 103(8): 731. CrossRef Review of Zoonotic Parasites in Medical and Veterinary Fields in the Republic of Korea Heejeong Youn The Korean Journal of Parasitology.2009; 47(Suppl): S133. CrossRef Seroprevalence of Toxoplasma gondii Infection and Characteristics of Seropositive Patients in General Hospitals in Daejeon, Korea Dae-Whan Shin, Dong-Yeub Cha, Quan Juan Hua, Guang-Ho Cha, Young-Ha Lee The Korean Journal of Parasitology.2009; 47(2): 125. CrossRef Trends in parasitic diseases in the Republic of Korea Eun-Hee Shin, Sang-Mee Guk, Hyo-Jin Kim, Soon-Hyung Lee, Jong-Yil Chai Trends in Parasitology.2008; 24(3): 143. CrossRef Evaluation of the Korean Isolate-1 Tachyzoite Antigen for Serodiagnosis of Toxoplasmosis Eun-Hee Shin, Dong-Hee Kim, Aifen Lin, Jo-Woon-Yi Lee, Hyo-Jin Kim, Myoung-Hee Ahn, Jong-Yil Chai The Korean Journal of Parasitology.2008; 46(1): 45. CrossRef Serological screening and toxoplasmosis exposure factors among pregnant women in the Democratic Republic of Sao Tome and Principe Chien-Ching Hung, Chia-Kwung Fan, Kua-Eyre Su, Fung-Chang Sung, Hung-Yi Chiou, Vilfrido Gil, Maria da Conceicao dos Reis Ferreira, Jose Manuel de Carvalho, Claudina Cruz, Yu-Kuan Lin, Lian-Fen Tseng, Ke-Yun Sao, Wen-Cheun Chang, Hung-Shue Lan, Shing-Hsien Transactions of the Royal Society of Tropical Medicine and Hygiene.2007; 101(2): 134. CrossRef Seroprevalence of Toxoplasma gondii infection among pre-schoolchildren aged 1–5 years in the Democratic Republic of Sao Tome and Principe, Western Africa Chia-Kwung Fan, Chien-Ching Hung, Kua-Eyre Su, Fung-Chang Sung, Hung-Yi Chiou, Vilfrido Gil, Maria da Conceicao dos Reis Ferreira, Jose Manuel de Carvalho, Claudina Cruz, Yu-Kuan Lin, Lian-Fen Tseng, Ke-Yun Sao, Wen-Cheun Chang, Hung-Shue Lan, Shing-Hsien Transactions of the Royal Society of Tropical Medicine and Hygiene.2006; 100(5): 446. CrossRef USE OF MONOCLONAL ANTIBODIES FOR FLOW CYTOMETRIC DETECTION OF INTRACELLULAR TOXOPLASMA GONDII IN MURINE SPLENIC LYMPHOCYTES Eun-Hee Shin, Sung-Bum Kim, Ho-Woo Nam, Eun-Taek Han, Jae-Hwan Park, Hye-Jin Ahn, Jong-Yil Chai Journal of Parasitology.2004; 90(1): 161. CrossRef Laboratory passage and characterization of an isolate of Toxoplasma gondii from an ocular patient in Korea Jong-Yil Chai, Aifen Lin, Eun-Hee Shin, Myoung-Don Oh, Eun-Taek Han, Ho-Woo Nam, Soon-Hyung Lee The Korean Journal of Parasitology.2003; 41(3): 147. CrossRef Serological evidence for remarkably variable prevalence rates of Toxoplasma gondii in children of major residential areas in United Arab Emirates Y.A Abu-Zeid Acta Tropica.2002; 83(1): 63. CrossRef Seroepidemiological study of Toxoplasma gondii infection in the rural area Okcheon-gun, Korea Young-Ha Lee, Hyung-Jun Noh, Ok-Sun Hwang, Sang-Keol Lee, Dae-Whan Shin The Korean Journal of Parasitology.2000; 38(4): 251. CrossRef 9,621 View 67 Download Crossref