Parasites, Hosts and Diseases

"Parasitic infection"

Original Article

Isolation and Genotyping of Acanthamoeba spp. as Neglected Parasites in North of Iran: Azar Shokri, Shahabeddin Sarvi, Ahmad Daryani, Mehdi Sharif; Korean J Parasitol 2016;54(4):447-453.
Published online August 31, 2016; DOI: https://doi.org/10.3347/kjp.2016.54.4.447

Abstract
PDF

Acanthamoeba, a free-living amoeba, is widely distributed in the environment, water sources, soil, dust, and air. It can cause keratitis in contact lens wearers with poor hygiene and also fatal granulomatous amebic encephalitis (GAE) in immunocompromised hosts. The aim of this study was to gain some insights into the distribution and genotypes of the potentially pathogenic species of Acanthamoeba present in water sources in north of Iran. Total 43 Acanthamoeba species were isolated from 77 water samples taken from different water sources within the Mazandaran province in Northern Iran (Sari city and suburbs). Isolates were identified based on cyst and trophozoite morphological characteristics as well genetics. PCR fragments corresponding to the small-subunit 18S rRNA gene were sequenced for 20 of 43 positive isolates. The results revealed that 83.3% of sequenced isolates belonged to the T4 genotype and the rest belonged to the T2 genotype. Our results indicated that Acanthamoeba is widely distributed in Sari city. As the incidence in Iran of amoebic keratitis has increased in recent years, the exact estimation of the prevalence of this amoeba and its predominant genotype may play a crucial role in prevention of the disease. Sari city has several rivers, seashores, and natural recreational amenities, which attract visitors during the year. This is the first report of Acanthamoeba genotypes from water sources in Sari city, Mazandaran province of Iran, and the results suggest that more attention is needed to protect the visiting population and immunocompromised individuals.

Citations

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Molecular characterization of Acanthamoeba spp. from different sources in Gonabad, Razavi Khorasan, Iran
Mitra Salehi, Adel Spotin, Fatemeh Hajizadeh, Faezeh Soleimani, Azar Shokri
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Molecular Identification of Pathogenic Free-Living Amoeba from Household Biofilm Samples in Iran: A Risk Factor for Acanthamoeba Keratitis
Maryam Norouzi, Reza Saberi, Maryam Niyyati, Jacob Lorenzo-Morales, Hamed Mirjalali, Marziye Fatemi, Ehsan Javanmard, Seyed Ahmad Karamati
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Isolation and molecular identification of Acanthamoeba spp. from hot springs in Mazandaran province, northern Iran
Samira Dodangeh, Elham Kialashaki, Ahmad Daryani, Mehdi Sharif, Shahabeddin Sarvi, Yusef Dadi Moghaddam, Seyed Abdollah Hosseini
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Brief Communication

Parasitic Infections Based on 320 Clinical Samples Submitted to Hanyang University, Korea (2004-2011): Sung-Chul Choi, Soo-Young Lee, Hyun-Ouk Song, Jae-Sook Ryu, Myoung-Hee Ahn; Korean J Parasitol 2014;52(2):215-220.
Published online April 18, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.2.215

Abstract
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We analyzed 320 clinical samples of parasitic infections submitted to the Department of Environmental Biology and Medical Parasitology, Hanyang University from January 2004 to June 2011. They consisted of 211 nematode infections, 64 trematode or cestode infections, 32 protozoan infections, and 13 infections with arthropods. The nematode infections included 67 cases of trichuriasis, 62 of anisakiasis (Anisakis sp. and Pseudoterranova decipiens), 40 of enterobiasis, and 24 of ascariasis, as well as other infections including strongyloidiasis, thelaziasis, loiasis, and hookworm infecions. Among the cestode or trematode infections, we observed 27 cases of diphyllobothriasis, 14 of sparganosis, 9 of clonorchiasis, and 5 of paragonimiasis together with a few cases of taeniasis saginata, cysticercosis cellulosae, hymenolepiasis, and echinostomiasis. The protozoan infections included 14 cases of malaria, 4 of cryptosporidiosis, and 3 of trichomoniasis, in addition to infections with Entamoeba histolytica, Entamoeba dispar, Entamoeba coli, Endolimax nana, Giardia lamblia, and Toxoplasma gondii. Among the arthropods, we detected 6 cases of Ixodes sp., 5 of Phthirus pubis, 1 of Sarcoptes scabiei, and 1 of fly larva. The results revealed that trichuriasis, anisakiasis, enterobiasis, and diphyllobothriasis were the most frequently found parasitosis among the clinical samples.

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Case Report

Congenital Neosporosis in Goats from the State of Minas Gerais, Brazil: Mary S. Varaschin, Christian Hirsch, Flademir Wouters, Karen Y. Nakagaki, Ant?nio M. Guimar?es, Domingos S. Santos, Pedro S. Bezerra, Rafael C. Costa, Ana P. Peconick, Ingeborg M. Langohr; Korean J Parasitol 2012;50(1):63-67.
Published online March 6, 2012; DOI: https://doi.org/10.3347/kjp.2012.50.1.63

Abstract
PDF

Congenital Neospora caninum infection was diagnosed in two Saanen goat kids from two distinct herds with a history of abortion and weak newborn goat kids in the Southern region of the State of Minas Gerais, Brazil. The first kid was weak at birth, had difficulty to rise and was unable to nurse. Gross lesions of porencephaly and hydrocephalus ex vacuo were seen. Multifocal necrosis, gliosis and non-supurative encephalitis were observed in the brain. Several parasitic cysts with a thick wall that reacted strongly only with polyclonal antiserum to Neospora caninum were seen in the cerebral cortex, brain stem and cerebellum. The second kid was born from a Neospora caninum seropositive mother that aborted in the last pregnancy. It was born without clinical signs. The diagnosis of neosporosis was based on antibody titer of 1:800 to N. caninum by indirect fluorescence antibody test obtained from blood collected before the goat kid ingested the colostrum and Neospora caninum DNA was detected by polymerase chain reaction and sequenced from placenta. This is the first report of neosporosis in goats in the southeast region of Brazil.

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