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Korean Journal of Parasitology

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https://www.readbyqxmd.com/read/29742877/monitoring-of-noxious-protozoa-for-management-of-natural-water-resources
#1
Young Yil Bahk, Pyo Yun Cho, Sung Kyu Ahn, Sangjung Park, Won Hwa Jheong, Yun-Kyu Park, Ho-Joon Shin, Sang-Seob Lee, Okjae Rhee, Tong-Soo Kim
Waterborne parasitic protozoa, particularly Giardia lamblia and Cryptosporidium spp., are common causes of diarrhea and gastroenteritis worldwide. The most frequently identified source of infestation is water, and exposure involves either drinking water or recreation in swimming pools or natural bodies of water. In practice, studies on Cryptosporidium oocysts and Giardia cysts in surface water are challenging owing to the low concentrations of these microorganisms because of dilution. In this study, a 3-year monitoring of Cryptosporidium parvum, Giardia lamblia , and Naegleria fowleri was conducted from August 2014 to June 2016 at 5 surface water sites including 2 lakes, 1 river, and 2 water intake plants...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742876/a-case-of-cutaneous-myiasis-caused-by-cordylobia-anthropophaga-larvae-in-a-korean-traveler-returning-from-central-africa
#2
Joo Yeon Ko, In-Yong Lee, Byeong Jin Park, Jae Min Shin, Jae-Sook Ryu
The cutaneous myiasis has been rarely reported in the Republic of Korea. We intended to describe here a case of furuncular cutaneous myiasis caused by Cordylobia anthropophaga larvae in a Korean traveler returned from Central Africa. A patient, 55-year-old man, had traveled to Equatorial Guinea, in Central Africa for a month and just returned to Korea. Physical examinations showed 2 tender erythematous nodules with small central ulceration on the left buttock and thigh. During skin biopsy, 2 larvae came out from the lesion...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742875/a-case-of-coenurosis-in-a-wild-rabbit-lepus-sinensis-caused-by-taenia-serialis-metacestode-in-qinghai-tibetan-plateau-area-china
#3
Xue-Yong Zhang, Ying-Na Jian, Li-Qing Ma, Xiu-Ping Li, Panagiotis Karanis
Six cystic metacestodes were found in the abdominal muscles of a wild rabbit, Lepus sinensis , in China. The coenurus contained one or more scolices armed with hooklets. Mitochondrial cox 1 (1,623 bp) confirmed 98% homology with cox 1 of Taenia serialis . This is the first report of T. serialis infection in an intermediate host in the Qinghai Tibetan Plateau Area, China.
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742874/-hypolobocera-guayaquilensis-decapoda-pseudothelphusidae-a-new-crab-intermediate-host-of-paragonimus-mexicanus-in-manab%C3%A3-province-ecuador
#4
Manuel Calvopina, Daniel Romero-Alvarez, Melina Rendon, Hidekazu Takagi, Hiromu Sugiyama
To determine that Paragonimus sp. is actively transmitted in a tropical area of the Pacific region of Ecuador where human cases of pulmonary paragonimiasis have recently been documented, a total of 75 freshwater crabs were collected from 2 different streams in the Pedernales area of Manabí Province, Ecuador. All collected crabs were identified as Hypolobocera guayaquilensis based on morphological characteristics of the male gonopods. The hepatopancreas of each crab was examined by compressing it between 2 glass plates followed by observation under a stereomicroscope...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742873/infection-status-with-clonorchis-sinensis-metacercariae-in-fish-from-tamjin-gang-river-in-jeollanam-do-republic-of-korea
#5
Ki-Bok Yoon, Hyun-Cheol Lim, Doo Young Jeon, Sook Park, Shin-Hyeong Cho, Jung-Won Ju, Sung-Shik Shin, Byoung-Kuk Na, Woon-Mok Sohn
The present study was performed to investigate the infection status with Clonorchis sinensis metacercariae (CsMc) in fishes from 2 sites, the middle and lower reaches, of Tamjin-gang (River) in Jeollanam-do, the Republic of Korea. Total 1,132 fishes in 22 species were collected from the middle reaches in Jangheung-gun for 4 years (2014-2017) and 517 fishes in 17 species were also collected from the lower reaches in Gangjin-gun in 2014 and 2017. They were all individually examined with the artificial digestion method in our laboratory...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742872/genetic-diversity-of-ascaris-in-china-assessed-using-simple-sequence-repeat-markers
#6
Chunhua Zhou, Shaoqing Jian, Weidong Peng, Min Li
The giant roundworm Ascaris infects pigs and people worldwide and causes serious diseases. The taxonomic relationship between Ascaris suum and Ascaris lumbricoides is still unclear. The purpose of the present study was to investigate the genetic diversity and population genetic structure of 258 Ascaris specimens from humans and pigs from 6 sympatric regions in Ascaris -endemic regions of China using existing simple sequence repeat data. The microsatellite markers showed a high level of allelic richness and genetic diversity in the samples...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742871/the-effect-of-abo-blood-groups-hemoglobinopathy-and-heme-oxygenase-1-polymorphisms-on-malaria-susceptibility-and-severity
#7
Jiraporn Kuesap, Kesara Na-Bangchang
Malaria is one of the most important public health problems in tropical areas on the globe. Several factors are associated with susceptibility to malaria and disease severity, including innate immunity such as blood group, hemoglobinopathy, and heme oxygenase-1 (HO-1) polymorphisms. This study was carried out to investigate association among ABO blood group, thalassemia types and HO-1 polymorphisms in malaria. The malarial blood samples were collected from patients along the Thai-Myanmar border. Determination of ABO blood group, thalassemia variants, and HO-1 polymorphisms were performed using agglutination test, low pressure liquid chromatography and polymerase chain reaction, respectively...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742870/unraveling-haplotype-diversity-of-the-apical-membrane-antigen-1-gene-in-plasmodium-falciparum-populations-in-thailand
#8
Lalita Lumkul, Vorthon Sawaswong, Phumin Simpalipan, Morakot Kaewthamasorn, Pongchai Harnyuttanakorn, Sittiporn Pattaradilokrat
Development of an effective vaccine is critically needed for the prevention of malaria. One of the key antigens for malaria vaccines is the apical membrane antigen 1 ( AMA -1) of the human malaria parasite Plasmodium falciparum , the surface protein for erythrocyte invasion of the parasite. The gene encoding AMA -1 has been sequenced from populations of P. falciparum worldwide, but the haplotype diversity of the gene in P. falciparum populations in the Greater Mekong Subregion (GMS), including Thailand, remains to be characterized...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742869/serologic-tests-of-igg-and-igm-antibodies-and-igg-avidity-for-diagnosis-of-ocular-toxoplasmosis
#9
Bahman Rahimi-Esboei, Mohammad Zarei, Mehdi Mohebali, Hossein Keshavarz Valian, Saeedeh Shojaee, Raziyeh Mahmoudzadeh, Mirataollah Salabati
This prospective study was aimed to detect acute and chronic ocular toxoplasmosis by comparison of anti- Toxoplasma gondii IgM and IgG antibody levels and IgG avidity test. One hundred and seventeen patients with ocular toxoplasmosis (OT) who referred to the Farabi Eye Hospital, Tehran, Iran were included in this study. Of the patients, 77 cases were positive for anti- T. gondii IgG, and 8 cases were positive for anti- T. gondii IgM. IgG avidity test revealed 11, 4, and 102 cases were low, intermediate, and high, respectively, and 6...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742868/modulated-gene-expression-of-toxoplasma-gondii-infected-retinal-pigment-epithelial-cell-line-arpe-19-via-pi3k-akt-or-mtor-signal-pathway
#10
Wei Zhou, Juan-Hua Quan, Fei-Fei Gao, Hassan Ahmed Hassan Ahmed Ismail, Young-Ha Lee, Guang-Ho Cha
Due to the critical location and physiological activities of the retinal pigment epithelial (RPE) cell, it is constantly subjected to contact with various infectious agents and inflammatory mediators. However, little is known about the signaling events in RPE involved in Toxoplasma gondii infection and development. The aim of the study is to screen the host mRNA transcriptional change of 3 inflammation-related gene categories, PI3K/Akt pathway regulatory components, blood vessel development factors and ROS regulators, to prove that PI3K/Akt or mTOR signaling pathway play an essential role in regulating the selected inflammation-related genes...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742867/molecular-identification-of-sarcocystis-grueneri-in-wild-korean-water-deer-hydropotes-inermis-argyropus
#11
Hye-Won Kim, Hyeon-Cheol Kim, Si-Yun Ryu, Kyoung-Seong Choi, Do-Hyeon Yu, Jinho Park, Joon-Seok Chae, Bae-Keun Park
The cysts of Sarcocystis grueneri were detected and characterized from the cardiac muscles of the Korean water deer ( Hydropotes inermis argyropus ). Of the 38 heart muscle samples examined by light microscopy, 10 were found infected with the cysts of Sarcocystis sp. The cysts appeared oval to spherical shape and measured 110-380 μm in length and 90-170 μm in width. A phylogenetic tree of the 18S rRNA sequences (1.5 kb) revealed a close relationship of the infected cysts to genus Sarcocystis . The 18S rRNA sequence of the infected cysts showed 100% identity to S...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742866/detection-and-identification-of-sarcocystis-cruzi-protozoa-apicomplexa-by-molecular-and-ultrastructural-studies-in-naturally-infected-korean-cattle-bos-taurus-coreanae-from-daejeon-korea
#12
Tong-Il Choi, Eui-Ju Hong, Si-Yun Ryu, Cheolho Sim, Joon-Seok Chae, Hyeon-Cheol Kim, Jinho Park, Kyoung-Seong Choi, Do-Hyeon Yu, Jae-Gyu Yoo, Bae-Keun Park
To survey the prevalence of Sarcocystis infections, 210 heart samples were collected from Korean native cattle ( Bos taurus coreanae ) at an abattoir in Daejeon Metropolitan City, Republic of Korea. Sarcocysts were detected form 31 specimens (14.8%) and identified as Sarcocystis cruzi via transmission electron microscopy. The wall of S. cruzi has flattened protrusions that did not contain fibrils or microfilaments. The protrusions arose irregularly from the base, contained a fine granular substance, lacked internal microfilaments, and measured approximately 0...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742865/detection-of-cryptosporidium-spp-in-diarrheic-immunocompetent-patients-in-beni-suef-egypt-insight-into-epidemiology-and-diagnosis
#13
Samah S Abdel Gawad, Mousa A M Ismail, Naglaa F A Imam, Ahmed H A Eassa, Enas Yahia Abu-Sarea
Cryptosporidium species is an important cause of gastrointestinal infections globally. This study aimed to shed light on its role in diarrheic immunocompetent patients in Beni-Suef, Egypt and to compare three diagnostic methods. Two hundred diarrheic patients, 37±16.8 year old, were enrolled. Stool samples were examined by light microscopy, using modified Ziehl-Neelsen stain (MZN) for Cryptosporidium spp. oocysts. Coproantigens were detected by sandwich ELISA. DNA molecular diagnosis was done by nested PCR...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29742864/atorvastatin-in-vivo-synergy-with-metronidazole-as-anti-blastocystis-therapy
#14
Maha M A Basyoni, Shawky A Fouad, Marwa F Amer, Ahmed Fathy Amer, Dalia Ibrahim Ismail
Blastocystis is an enteric Straminopile in tropical, subtropical and developing countries. Metronidazole has been a chemotheraputic for blastocystosis. Failures in its regimens were reported and necessitate new studies searching for alternative therapeutic agents. Aim of current study is to investigate potential effects of Atorvastatin (AVA) compared to the conventional chemotherapeutic MTZ in experimentally Blastocystis -infected mice. Anti- Blastocystis efficacy of AVA was evaluated parasitologically, histopathologically and by transmission electron microscopy using MTZ (10 mg/kg) as a control...
April 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29529857/endoparasites-of-small-mammals-in-edo-state-nigeria-public-health-implications
#15
Clement Isaac, Benjamin Igho Igbinosa, John Asekhaen Ohiolei, Catherine Eki Osimen
Some small mammals occur as household pests and harbour a number of parasites that could be of public health importance. This study profiled the helminth and protozoan parasites in trapped small mammals within and around human dwelling places (houses) located across 4 major towns (Auchi, Benin, Ekpoma, and Uromi) and environs in Edo state, Nigeria. Six genera ( Apodemus sp., Crocidura sp., Mastomys natalensis , Mus musculus , Rattus sp., and Sorex sp.) were identified from 502 trapped small mammals. Overall, M...
February 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29529856/-spirometra-decipiens-cestoda-diphyllobothriidae-collected-in-a-heavily-infected-stray-cat-from-the-republic-of-korea
#16
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S Eom
Morphological and molecular characteristics of spirometrid tapeworms, Spirometra decipiens , were studied, which were recovered from a heavily infected stray cat road-killed in Eumseong-gun, Chungcheongbuk-do (Province), the Republic of Korea (=Korea). A total of 134 scolices and many broken immature and mature proglottids of Spirometra tapeworms were collected from the small intestine of the cat. Morphological observations were based on 116 specimens. The scolex was 22.8-32.6 mm (27.4 mm in average) in length and small spoon-shape with 2 distinct bothria...
February 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29529855/comparative-characterization-of-four-calcium-binding-ef-hand-proteins-from-opisthorchis-viverrini
#17
Palida Emmanoch, Nanthawat Kosa, Suksiri Vichasri-Grams, Smarn Tesana, Rudi Grams, Amornrat Geadkaew-Krenc
Four isoforms of calcium binding proteins containing 2 EF hand motifs and a dynein light chain-like domain in the human liver fluke Opisthorchis viverrini , namely OvCaBP1, 2, 3, and 4, were characterized. They had molecular weights of 22.7, 21.6, 23.7, and 22.5 kDa, respectively and showed 37.2-42.1% sequence identity to CaBP22.8 of O. viverrini . All were detected in 2- and 4-week-old immature and mature parasites. Additionally, OvCaBP4 was found in newly excysted juveniles. Polyclonal antibodies against each isoform were generated to detect the native proteins in parasite extracts by Western blot analysis...
February 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29529854/-echinostoma-ilocanum-infection-in-two-residents-of-savannakhet-province-lao-pdr
#18
Jong-Yil Chai, Woon-Mok Sohn, Jaeeun Cho, Keeseon S Eom, Tai-Soon Yong, Duk-Young Min, Eui-Hyug Hoang, Bounlay Phommasack, Bounnaloth Insisiengmay, Han-Jong Rim
Adult specimens of Echinostoma ilocanum (Garrison, 1908) Odhner, 1911 (Trematoda: Echinostomatidae) were recovered from 2 riparian people who resided along the Mekong River in Savannakhet Province, Lao PDR. In fecal examinations done by the Kato-Katz technique, they revealed echinostome eggs together with eggs of Opisthorchis viverrini (and minute intestinal fluke eggs) and hookworms. To recover the adult flukes, they were treated with praziquantel 30-40 mg/kg in a single dose and purged with magnesium salts...
February 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29529853/serodiagnosis-of-extraintestinal-amebiasis-retrospective-evaluation-of-the-diagnostic-performance-of-the-bordier%C3%A2-elisa-kit
#19
Nicolas Beyls, Odile Cognet, Jean-Paul Stahl, Olivier Rogeaux, Herve Pelloux
Soluble antigens from an axenic culture of Entamoeba histolytica were used to develop a commercial ELISA kit to quantify anti- E. histolytica antibodies in sera of patients with extraintestinal amebiasis in non-endemic settings. The diagnostic specificity and sensitivity of the test were assessed retrospectively using 131 human serum samples with amoebic serologic status available. They were selected according to their results in immunofluorescence (IFAT) and were separated in 2 sample categories: 64 sera with positive results by IFAT and 67 with negative results by IFAT...
February 2018: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/29529852/development-of-a-rapid-diagnostic-test-kit-to-detect-igg-igm-antibody-against-zika-virus-using-monoclonal-antibodies-to-the-envelope-and-non-structural-protein-1-of-the-virus
#20
Yeong Hoon Kim, Jihoo Lee, Young-Eun Kim, Chom-Kyu Chong, Yanaihara Pinchemel, Francis Reisdörfer, Joyce Brito Coelho, Ronaldo Ferreira Dias, Pan Kee Bae, Zuinara Pereira Maia Gusmão, Hye-Jin Ahn, Ho-Woo Nam
We developed a Rapid Diagnostic Test (RDT) kit for detecting IgG/IgM antibodies against Zika virus (ZIKV) using monoclonal antibodies to the envelope (E) and non-structural protein 1 (NS1) of ZIKV. These proteins were produced using baculovirus expression vector with Sf9 cells. Monoclonal antibodies J2G7 to NS1 and J5E1 to E protein were selected and conjugated with colloidal gold to produce the Zika IgG/IgM RDT kit (Zika RDT). Comparisons with ELISA, plaque reduction neutralization test (PRNT), and PCR were done to investigate the analytical sensitivity of Zika RDT, which resulted in 100% identical results...
February 2018: Korean Journal of Parasitology
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