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Korean Journal of Parasitology

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https://www.readbyqxmd.com/read/30419740/survey-and-phylogenetic-analysis-of-rodents-and-important-rodent-borne-zoonotic-pathogens-in-gedu-bhutan
#1
Yoenten Phuentshok, Kezang Dorji, Tandin Zangpo, Silas A Davidson, Ratree Takhampunya, Tenzinla Tenzinla, Chencho Dorjee, Roger S Morris, Peter D Jolly, Sithar Dorjee, Joanna S McKenzie
Rodents are well-known reservoirs and vectors of many emerging and re-emerging infectious diseases, but little is known about their role in zoonotic disease transmission in Bhutan. In this study, a cross-sectional investigation of zoonotic disease pathogens in rodents was performed in Chukha district, Bhutan, where a high incidence of scrub typhus and cases of acute undifferentiated febrile illness had been reported in people during the preceding 4-6 months. Twelve rodents were trapped alive using wire-mesh traps...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419739/complete-mitochondrial-genome-of-the-chagas-disease-vector-triatoma-rubrofasciata
#2
Li Dong, Xiaoling Ma, Mengfei Wang, Dan Zhu, Yuebiao Feng, Yi Zhang, Jingwen Wang
Triatoma rubrofasciata is a wide-spread vector of Chagas disease in Americas. In this study, we completed the mitochondrial genome sequencing of T. rubrofasciata. The total length of T. rubrofasciata mitochondrial genome was 17,150 bp with the base composition of 40.4% A, 11.6% G, 29.4% T and 18.6% C. It included 13 protein-coding genes, 22 tRNA genes, 2 rRNA genes and one control region. We constructed a phylogenetic tree on the 13 protein-coding genes of T. rubrofasciata and other 13 closely related species to show their phylogenic relationship...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419738/infections-with-digenean-trematode-metacercariae-in-two-invasive-alien-fish-micropterus-salmoides-and-lepomis-macrochirus-in-two-rivers-in-chungcheongbuk-do-republic-of-korea
#3
Seongjun Choe, Hansol Park, Dongmin Lee, Yeseul Kang, Hyeong-Kyu Jeon, Keeseon S Eom
Present study was performed to survey infection status of digenetic trematode metacercariae in 2 alien fish species, Micropterus salmoides (largemouth bass) and Lepomis macrochirus (bluegill), in 2 rivers draining Chungcheongbuk-do, Republic of Korea. A total of 107 largemouth bass and 244 bluegills were caught in Daecheong-ho (ho=lake) and Musim-cheon (a branch of Geum-gang), in Chungcheongbuk-do April-July 2015. Additionally, 68 native fish of 5 species, i.e., Zacco platypus, Hemibarbus longirostris, Carassius auratus, Pseudogobio esocinus and Puntungia herzi, were caught from the same water bodies...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419737/morphological-characteristics-and-fish-hosts-of-isoparorchis-sp-digenea-isoparorchiidae-in-korea
#4
Woon-Mok Sohn, Byoung-Kuk Na
We described here the morphological characteristics for the species identification and fish hosts of Isoparorchis sp. (Digenea: Isoparorchiidae) in the Republic of Korea (Korea). Total 1,371 freshwater fishes collected in Yangcheon (Stream) in Sancheong-gun, Gyeongsangnam-do were examined by the artificial digestion methods to survey the infection status of digenetic trematode metacercariae for 4 years (2013-2016). Adult and larval worms of Isoparorchis sp. were detected in 38 (8.4%) out of 451 fish in 4 species, i...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419736/prevalence-and-phylogenetic-analyses-of-trichuris-suis-in-pigs-in-hunan-province-subtropical-china
#5
Lei Tan, Aibing Wang, Jing Yi, Yisong Liu, Jiayu Li, Wei Liu
Trichuris suis infection in pigs is ubiquitous in intensive and extensive farms, which causes potential threat to human health. The objective of this research was to investigate the prevalence of T. suis in pigs in Hunan province. Total 2,267 fresh fecal samples distributed in 28 pig farms from 7 different administrative regions (Hunan province) were evaluated for the existence of T. suis eggs using saturated NaCl floating method. The average infection rate of T. suis in pigs was 8.91% in Hunan province. To determine genetic variation of the gained T...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419735/effect-of-2-6-dichlorobenzonitrile-on-amoebicidal-activity-of-multipurpose-contact-lens-disinfecting-solutions
#6
Eun-Kyung Moon, Seungeun Lee, Fu-Shi Quan, Hyun-Hee Kong
Multipurpose contact lens disinfecting solutions (MPDS) are widely used to cleanse and disinfect microorganisms. However, disinfection efficacy of these MPDS against Acanthamoeba cyst remain insufficient. 2, 6-dichlorobenzonitrile (DCB), a cellulose synthesis inhibitor, is capable of increasing the amoebical effect against Acanthamoeba by inhibiting its encystation. In this study, we investigated the possibility of DCB as a disinfecting agent to improve the amoebicidal activity of MPDS against Acanthamoeba cyst...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419734/phthirus-pubis-infestation-of-the-scalp-a-case-report-and-review-of-the-literature
#7
Stefano Veraldi, Paolo Pontini, Gianluca Nazzaro
Phthirus pubis usually infests the pubis, groin, buttocks and perianal region. It can sometimes infest the thighs, abdomen, chest, axillae and beard. Eyelashes and eyebrows may be involved in children. The involvement of the scalp is very rare. We describe a case of P. pubis infestation located exclusively on the scalp in an adult woman. Neither lice/nits nor skin lesions were observed elsewhere, including eyebrows, eyelashes, axillae, pubis, buttocks and perianal region (the patient was hairless in the axillae and pubis)...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419733/analysis-of-five-arboviruses-and-culicoides-distribution-on-cattle-farms-in-jeollabuk-do-korea
#8
Daram Yang, Myeon-Sik Yang, Haerin Rhim, Jae-Ik Han, Jae-Ku Oem, Yeon-Hee Kim, Kyoung-Ki Lee, Chae-Woong Lim, Bumseok Kim
Arthropod-borne viruses (Arboviruses) are transmitted by arthropods such as Culicoides biting midges and cause abortion, stillbirth, and congenital malformation in ruminants, apparently leading to economic losses to farmers. To monitor the distribution of Culicoides and to determine their relationship with different environmental conditions (temperature, humidity, wind speed, and altitude of the farms) on 5 cattle farms, Culicoides were collected during summer season (May-September) in 2016 and 2017, and analyzed for identification of species and detection of arboviruses...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419732/morphological-studies-of-developmental-stages-of-oculotrema-hippopotami-monogenea-polystomatidae-infecting-the-eye-of-hippopotamus-amphibius-mammalia-hippopotamidae-using-sem-and-edxa-with-notes-on-histopathology
#9
Nataliya Yu Rubtsova, Richard A Heckmann, Willem J Smit, Wilmien J Luus-Powell, Ali Halajian, Francois Roux
The present study was performed to observe histopathological effects of Oculotrema hippopotami Stunkard, 1924 infection in the eye of Hippopotamus amphibius, as well as to reveal new details of morphology and structural features of this monogenean and its comparison between 2 age stages of the parasite. This was done using both light and scanning electron microscopy, energy dispersive X-ray analysis (EDXA) and histopathology. The presence of a mixture of different generations (adult and sub-adult) in one host individual is common for Oculotrema Stunkard, 1924 in contrast to Polystoma Zeder, 1800...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419731/distribution-status-of-hybrid-types-in-large-liver-flukes-fasciola-species-digenea-fasciolidae-from-ruminants-and-humans-in-vietnam
#10
Thi Bich Nga Nguyen, Nguyen Van De, Thi Kim Lan Nguyen, Huynh Hong Quang, Huong Thi Thanh Doan, Takeshi Agatsuma, Thanh Hoa Le
The aim of this study is to delineate 'admixed hybrid' and 'introgressive' Fasciola genotypes present in the Fasciola population in Vietnam. Adult liver flukes collected from ruminants in 18 Provinces were morphologically sorted out by naked eyes for small (S), medium (M) and large (L) body shapes; and human samples (n=14) from patients. Nuclear ribosomal (rDNA) ITS1 and ITS2, and mitochondrial (mtDNA) nad1 markers were used for determination of their genetic status. Total 4,725 worm samples of ruminants were tentatively classified by their size: 6% (n=284) small (S)-, 13% (n=614) medium (M)-, and 81% (n=3,827) large (L)-forms...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419730/comparative-assessment-of-diagnostic-performances-of-two-commercial-rapid-diagnostic-test-kits-for-detection-of-plasmodium-spp-in-ugandan-patients-with-malaria
#11
Young Yil Bahk, Seo Hye Park, Woojoo Lee, Kyoung Jin, Seong Kyu Ahn, Byoung-Kuk Na, Tong-Soo Kim
Prompt diagnosis of malaria cases with rapid diagnostic tests (RDTs) has been widely adopted as an effective malaria diagnostic tool in many malaria endemic countries, primarily due to their easy operation, fast result output, and straightforward interpretation. However, there has been controversy about the diagnostic accuracy of RDTs. This study was conducted to evaluate the diagnostic performances of the 2 commercially available malaria RDT kits, RapiGEN Malaria Ag Pf/Pv (pLDH/pLDH) and Asan EasyTestTM Malaria Ag Pf/Pv (HRP-2/pLDH) for their abilities to detect Plasmodium species in blood samples collected from Ugandan patients with malaria...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419729/tissue-fluid-enzyme-linked-immunosorbant-assay-for-piglets-experimentally-infected-with-toxoplasma-gondii-and-survey-on-local-and-imported-pork-in-korean-retail-meat-markets
#12
Won Gi Yoo, Sun-Min Kim, Eun Jeong Won, Ji-Yun Lee, Fuhong Dai, Ho Choon Woo, Ho-Woo Nam, Tae Im Kim, Jeong-Hee Han, Dongmi Kwak, Yun Sang Cho, Seung-Won Kang, Tong-Soo Kim, Xing-Quan Zhu, Chunren Wang, Heejeong Youn, Sung-Jong Hong
To investigate the prevalence of Toxoplasma gondii in pork on the market in Korea, an in-house enzyme-linked immunosorbent assay for tissue fluid (CAU-tf-ELISA) was developed using a soluble extract of T. gondii RH strain tachyzoites. As the standard positive controls, the piglets were experimentally infected with T. gondii: Group A (1,000 cysts-containing bradyzoites), Group B (500 cysts-containing bradyzoites) and Group C (1.0×103 or 1.0×104 tachyzoites). The CAU-tf-ELISA demonstrated infection intensity-dependent positivity toward tissue fluids with average cut-off value 0...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419728/virus-like-particles-expressing-toxoplasma-gondii-rhoptry-protein-18-induces-better-protection-than-rhoptry-protein-4-against-t-gondii-infection
#13
Hae-Ji Kang, Su-Hwa Lee, Ki-Back Chu, Dong-Hun Lee, Fu-Shi Quan
Toxoplasma gondii is a ubiquitous protozoan parasite responsible for causing toxoplasmosis. Preventive measures for toxoplasmosis are currently lacking and as such, development of novel vaccines are of urgent need. In this study, we generated 2 virus-like particles (VLPs) vaccines expressing T. gondii rhoptry protein 4 (ROP4) or rhoptry protein 18 (ROP18) using influenza matrix protein (M1) as a core protein. Mice were intranasally immunized with VLPs vaccines and after the last immunization, mice were challenged with ME49 cysts...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419727/development-of-molecular-diagnosis-using-multiplex-real-time-pcr-and-t4-phage-internal-control-to-simultaneously-detect-cryptosporidium-parvum-giardia-lamblia-and-cyclospora-cayetanensis-from-human-stool-samples
#14
Ji-Hun Shin, Sang-Eun Lee, Tong Soo Kim, Da-Won Ma, Shin-Hyeong Cho, Jong-Yil Chai, Eun-Hee Shin
This study aimed to develop a new multiplex real-time PCR detection method for 3 species of waterborne protozoan parasites (Cryptosporidium parvum, Giardia lamblia, and Cyclospora cayetanensis) identified as major causes of traveler's diarrhea. Three target genes were specifically and simultaneously detected by the TaqMan probe method for multiple parasitic infection cases, including Cryptosporidium oocyst wall protein for C. parvum, glutamate dehydrogenase for G. lamblia, and internal transcribed spacer 1 for C...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419726/molecular-and-biochemical-properties-of-a-cysteine-protease-of-acanthamoeba-castellanii
#15
Yeonchul Hong, Jung-Mi Kang, So-Young Joo, Su-Min Song, Hương Giang Lê, Thị Lam Thái, Jinyoung Lee, Youn-Kyoung Goo, Dong-Il Chung, Woon-Mok Sohn, Byoung-Kuk Na
Acanthamoeba spp. are free-living protozoa that are opportunistic pathogens for humans. Cysteine proteases of Acanthamoeba have been partially characterized, but their biochemical and functional properties are not clearly understood yet. In this study, we isolated a gene encoding cysteine protease of A. castellanii (AcCP) and its biochemical and functional properties were analyzed. Sequence analysis of AcCP suggests that this enzyme is a typical cathepsin L family cysteine protease, which shares similar structural characteristics with other cathepsin L-like enzymes...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30419725/prevention-and-control-strategies-for-parasitic-infections-in-the-korea-centers-for-disease-control-and-prevention
#16
Young Yil Bahk, Eun-Hee Shin, Shin-Hyeong Cho, Jung-Won Ju, Jong-Yil Chai, Tong-Soo Kim
Korea is successfully controlled intestinal parasitic infections owing to economic development and high health consciousness. The Division of Vectors and Parasitic Diseases (formerly the Division of Malaria and Parasitology) is in the Center for Laboratory Control of Infectious Diseases of the Korea Centers for Disease Control and Prevention. It has been the governmental agency responsible for controlling and leading scientific research on parasitic diseases. The Division of Vectors and Parasitic Diseases has conducted and funded basic research and disseminated the research results to various medical fields, ultimately promoting public health in Korea...
October 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30196674/genetic-diversity-of-echinococcus-granulosus-genotype-g1-in-xinjiang-northwest-of-china
#17
Bin Yan, Xiafei Liu, Junyuan Wu, Shanshan Zhao, Wumei Yuan, Baoju Wang, Hazi Wureli, Changchun Tu, Chuangfu Chen, Yuanzhi Wang
Cystic echinococcosis (CE) caused by E. granulosus is a serious helminthic zoonosis in humans, livestock and wildlife. Xinjiang is one of high endemic province for CE in China. A total of 55 sheep and cattle livers containing echinococcal cysts were collected from slaughterhouses in Changji and Yining City, northern region of Xinjiang. PCR was employed for cloning 2 gene fragments, 12S rRNA and CO1 for analysis of phylogenetic diversity of E. granulosus. The results showed that all the samples collected were identified as G1 genotype of E...
August 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30196673/a-retrospective-analysis-on-the-cystic-echinococcosis-cases-occured-in-northeastern-punjab-province-pakistan
#18
Aisha Khan, Sarmad Zahoor, Haroon Ahmed, Uzma Malik, Rabia Amin Butt, Muhammad Sultanul Muzam, Seyma Gunyakti Kilinc, Noorulain Noor, Saroosh Zahoor, Muhammad Sohail Afzal, Hamza Mansur, Shumaila Irum, Sami Simsek
A retrospective study was performed to report the case occurrence of cystic echinococcosis (CE) in three hospitals of north-eastern region in Punjab Province, Pakistan. We reviewed retrospectively the clinical records of patients in 4 hospitals which were diagnosed with CE during 2012-2017. A total of 198 cases, 82 (41.4%) male and 116 (58.6%) females were detected as CE. The most Highest incidence was revealed in.... 21-30 years-old group (24.2%) followed by 41-50 (22.7%), 31-40 (16.2%), 11-20 (13.6%), 51-60 (8...
August 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30196672/molecular-and-morphologic-identification-of-spirometra-ranarum-found-in-the-stool-of-african-lion-panthera-leo-in-the-serengeti-plain-of-tanzania
#19
Keeseon S Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Julius Keyyu, Robert Fyumagwa, Hyeong-Kyu Jeon
The present study was performed with morphological and molecular analysis (cox1 and nad1 mitochondrial genes) to identify the proglottids of spirometrid tapeworm found in the stool of an African lion, Panthera leo, in the Serengeti plain of Tanzania. A strand of tapeworm strobila, about 75 cm in length, was obtained in the stool of a male African lion in the Serengeti National Park (34˚ 50' E, 02˚ 30' S), Tanzania, in February 2012. The morphological features of the adult worm examined exhibited 3 uterine coils with a bow tie appearance and adopted a diagonal direction in the second turn...
August 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/30196671/a-case-of-fascioliasis-in-a-wild-nutria-myocastor-coypus-in-republic-of-korea
#20
Hyo-Seok Kim, Joo-Yeon Kong, Jong-Hyun Kim, Seong-Chan Yeon, Il-Hwa Hong
A total of 44 adult or juvenile nutrias were necropsied for disease survey. A large nodule was found in the liver of a nutria. The histopathological specimen of the hepatic nodule was microscopically examined, and sectional worms were found in the bile duct. The worms showed a tegument with spines, highly branches of vitelline glands and intestine. Finally, we histopathologically confirmed fascioliasis in a wild nutria. In the present study, a case of fascioliasis in a wild nutria is first confirmed in Korea...
August 2018: Korean Journal of Parasitology
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