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Wiwanitkit V. Diagnostic and management strategies of ocular cysticercosis: current perspectives. EXPERT REVIEW OF OPHTHALMOLOGY 2020. [DOI: 10.1080/17469899.2020.1806714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Viroj Wiwanitkit
- Department of Community Medicine, Dr DY Patil University, Pune, India
- Department of Tropical Medicine, Hainan Medical University, Haikou, China
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2
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Gazioglu A, Simsek S, Kizil O, Ceribasi AO, Kesik HK, Ahmed H. Clinical, pathological and molecular evaluations and CT scan screening of coenurosis (Coenurus cerebralis) in sheep and calves. REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA 2017; 26:3-9. [DOI: 10.1590/s1984-29612016090] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 06/14/2016] [Indexed: 11/21/2022]
Abstract
Abstract The aims of this study were to diagnose coenurosis by means of computerized tomography (CT) scan imaging and molecular characterization of the CO1 gene using the polymerase chain reaction (PCR). Sheep and calves were necropsied, and CT scans on the cephalic region were performed on the animals. Sections of brain tissue infected with parasites were then stained with hematoxylin and eosin for microscopic examination. Material collected from brain cysts was fixed in 70% ethanol. PCR amplification was carried out using the CO1 mitochondrial gene. A total of 60 calves and 80 sheep were examined clinically and, of these, 15 calves and 38 sheep showed signs of depression, with counterclockwise circling movements and altered head carriage. Four sheep and one calf were necropsied, and C. cerebralis cysts were detected in all of them. A hypodense cyst was monitored in the right cerebellar hemisphere on a CT scan on one sheep. A cyst was found in the left frontal lobe on a CT scan on one calf. Microscopically, C. cerebralis cysts were surrounded by a fibrous or epithelial wall that presented necrosis on cerebral sections of both the sheep and the cattle. The CO1-PCR assay yielded a 446 bp band, which was sequenced and phylogenetically analyzed: the results confirmed the presence of T. multiceps. This study reports the first use of CT imaging on naturally infected calves and sheep for diagnosing coenurosis.
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Affiliation(s)
| | | | | | | | | | - Haroon Ahmed
- University of Firat, Turkey; COMSATS Institute of Information Technology, Pakistan
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3
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Gordon CA, McManus DP, Acosta LP, Olveda RM, Williams GM, Ross AG, Gray DJ, Gobert GN. Multiplex real-time PCR monitoring of intestinal helminths in humans reveals widespread polyparasitism in Northern Samar, the Philippines. Int J Parasitol 2015; 45:477-83. [PMID: 25858090 DOI: 10.1016/j.ijpara.2015.02.011] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2014] [Revised: 01/20/2015] [Accepted: 02/16/2015] [Indexed: 12/24/2022]
Abstract
The global socioeconomic importance of helminth parasitic disease is underpinned by the considerable clinical impact on millions of people. While helminth polyparasitism is considered common in the Philippines, little has been done to survey its extent in endemic communities. High morphological similarity of eggs between related species complicates conventional microscopic diagnostic methods which are known to lack sensitivity, particularly in low intensity infections. Multiplex quantitative PCR diagnostic methods can provide rapid, simultaneous identification of multiple helminth species from a single stool sample. We describe a multiplex assay for the differentiation of Ascaris lumbricoides, Necator americanus, Ancylostoma, Taenia saginata and Taenia solium, building on our previously published findings for Schistosoma japonicum. Of 545 human faecal samples examined, 46.6% were positive for at least three different parasite species. High prevalences of S. japonicum (90.64%), A. lumbricoides (58.17%), T. saginata (42.57%) and A. duodenale (48.07%) were recorded. Neither T. solium nor N. americanus were found to be present. The utility of molecular diagnostic methods for monitoring helminth parasite prevalence provides new information on the extent of polyparasitism in the Philippines municipality of Palapag. These methods and findings have potential global implications for the monitoring of neglected tropical diseases and control measures.
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Affiliation(s)
- Catherine A Gordon
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia; Discipline of Epidemiology and Biostatistics, School of Population Health, University of Queensland, Brisbane, Australia.
| | - Donald P McManus
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - Luz P Acosta
- Department of Immunology, Research Institute of Tropical Medicine, Manila, Philippines
| | - Remigio M Olveda
- Department of Immunology, Research Institute of Tropical Medicine, Manila, Philippines
| | - Gail M Williams
- Discipline of Epidemiology and Biostatistics, School of Population Health, University of Queensland, Brisbane, Australia
| | - Allen G Ross
- Griffith Health Institute, Griffith University, Queensland, Australia
| | - Darren J Gray
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia; Discipline of Epidemiology and Biostatistics, School of Population Health, University of Queensland, Brisbane, Australia; Research School of Population Health, The Australian National University, Canberra, Australia
| | - Geoffrey N Gobert
- Molecular Parasitology Laboratory, Infectious Diseases Division, QIMR Berghofer Medical Research Institute, Brisbane, Australia
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4
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Helminths in Meat. Food Microbiol 2014. [DOI: 10.1128/9781555818463.ch26] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Jabbar A, Gasser RB. Mutation scanning analysis of genetic variation within and among Echinococcus species: implications and future prospects. Electrophoresis 2014; 34:1852-62. [PMID: 23977679 DOI: 10.1002/elps.201300078] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Adult tapeworms of the genus Echinococcus (family Taeniidae) occur in the small intestines of carnivorous definitive hosts and are transmitted to particular intermediate mammalian hosts, in which they develop as fluid-filled larvae (cysts) in internal organs (usually lung and liver), causing the disease echinococcosis. Echinococcus species are of major medical importance and also cause losses to the meat and livestock industries, mainly due to the condemnation of infected offal. Decisions regarding the treatment and control of echinococcosis rely on the accurate identification of species and population variants (strains). Conventional, phenetic methods for specific identification have some significant limitations. Despite advances in the development of molecular tools, there has been limited application of mutation scanning methods to species of Echinococcus. Here, we briefly review key genetic markers used for the identification of Echinococcus species and techniques for the analysis of genetic variation within and among populations, and the diagnosis of echinococcosis. We also discuss the benefits of utilizing mutation scanning approaches to elucidate the population genetics and epidemiology of Echinococcus species. These benefits are likely to become more evident following the complete characterization of the genomes of E. granulosus and E. multilocularis.
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Affiliation(s)
- Abdul Jabbar
- Faculty of Veterinary Science, The University of Melbourne, Parkville, Victoria, Australia
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Yamasaki H. Current status and perspectives of cysticercosis and taeniasis in Japan. THE KOREAN JOURNAL OF PARASITOLOGY 2013; 51:19-29. [PMID: 23467264 PMCID: PMC3587745 DOI: 10.3347/kjp.2013.51.1.19] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 12/18/2012] [Accepted: 12/18/2012] [Indexed: 11/23/2022]
Abstract
This mini-review describes recent epidemiological trends in cysticercosis and taeniasis in Japan. Some of the topics discussed herein were presented at the first symposium on "Current perspectives of Taenia asiatica researches", that was held in Osong in Chungbuk Province, South Korea, in October 2011 and organized by Prof. K. S. Eom, Chungbuk National University School of Medicine. To better understand the trends in the occurrence of cysticercosis and taeniasis in Japan, clinical cases reported in 2005 have been updated. In addition, the current status of Taenia asiatica infections successively occurring in Japan since 2010 is also discussed.
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Affiliation(s)
- Hiroshi Yamasaki
- Department of Parasitology, National Institute of Infectious Diseases, Tokyo, Japan.
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7
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Advances in the study of helminth mitochondrial genomes and their associated applications. CHINESE SCIENCE BULLETIN-CHINESE 2012. [DOI: 10.1007/s11434-011-4748-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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8
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DNA amplification approaches for the diagnosis of key parasitic helminth infections of humans. Mol Cell Probes 2011; 25:143-52. [DOI: 10.1016/j.mcp.2011.05.002] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2011] [Revised: 05/24/2011] [Accepted: 05/24/2011] [Indexed: 01/09/2023]
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9
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Avcioglu H, Yildirim A, Duzlu O, Inci A, Terim KK, Balkaya I. Prevalence and molecular characterization of bovine coenurosis from Eastern Anatolian region of Turkey. Vet Parasitol 2011; 176:59-64. [DOI: 10.1016/j.vetpar.2010.10.033] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 10/06/2010] [Accepted: 10/12/2010] [Indexed: 11/29/2022]
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10
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Diagnosis of parasitic diseases: old and new approaches. Interdiscip Perspect Infect Dis 2009; 2009:278246. [PMID: 20069111 PMCID: PMC2804041 DOI: 10.1155/2009/278246] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2009] [Accepted: 08/29/2009] [Indexed: 12/28/2022] Open
Abstract
Methods for the diagnosis of infectious diseases have stagnated in the last 20–30 years. Few major advances in clinical diagnostic testing have been made since the introduction of PCR, although new technologies are being investigated. Many tests that form the backbone of the “modern” microbiology laboratory are based on very old and labour-intensive technologies such as microscopy for malaria. Pressing needs include more rapid tests without sacrificing sensitivity, value-added tests, and point-of-care tests for both high- and low-resource settings. In recent years, research has been focused on alternative methods to improve the diagnosis of parasitic diseases. These include immunoassays, molecular-based approaches, and proteomics using mass spectrometry platforms technology. This review summarizes the progress in new approaches in parasite diagnosis and discusses some of the merits and disadvantages of these tests.
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Update on eosinophilic meningoencephalitis and its clinical relevance. Clin Microbiol Rev 2009; 22:322-48, Table of Contents. [PMID: 19366917 DOI: 10.1128/cmr.00044-08] [Citation(s) in RCA: 190] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Eosinophilic meningoencephalitis is caused by a variety of helminthic infections. These worm-specific infections are named after the causative worm genera, the most common being angiostrongyliasis, gnathostomiasis, toxocariasis, cysticercosis, schistosomiasis, baylisascariasis, and paragonimiasis. Worm parasites enter an organism through ingestion of contaminated water or an intermediate host and can eventually affect the central nervous system (CNS). These infections are potentially serious events leading to sequelae or death, and diagnosis depends on currently limited molecular methods. Identification of parasites in fluids and tissues is rarely possible, while images and clinical examinations do not lead to a definitive diagnosis. Treatment usually requires the concomitant administration of corticoids and anthelminthic drugs, yet new compounds and their extensive and detailed clinical evaluation are much needed. Eosinophilia in fluids may be detected in other infectious and noninfectious conditions, such as neoplastic disease, drug use, and prosthesis reactions. Thus, distinctive identification of eosinophils in fluids is a necessary component in the etiologic diagnosis of CNS infections.
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Harrington AT, Creutzfeldt CJ, Sengupta DJ, Hoogestraat DR, Zunt JR, Cookson BT. Diagnosis of neurocysticercosis by detection of Taenia solium DNA using a global DNA screening platform. Clin Infect Dis 2009; 48:86-90. [PMID: 19025499 DOI: 10.1086/594128] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Neurocysticercosis is caused by Taenia solium infection of the brain. Diagnosis is most often made by visualization of the parasitic scolex by magnetic resonance imaging of the brain or by characteristic neuroimaging findings with serologic test results positive for T. solium. A patient who presents with a solitary brain lesion usually poses a diagnostic dilemma, because the differential diagnosis often includes neurocysticercosis and other infections or neoplasm. Although the sensitivity of serologic testing for T. solium approaches 100% in patients with multiple intraparenchymal cysts, the sensitivity of testing for patients with solitary cysts is <50%, which makes serologic testing a less useful diagnostic tool for patients with solitary central nervous system (CNS) lesions. We describe 2 patients with solitary CNS lesions who received a neurocysticercosis diagnosis after identification of T. solium DNA in brain biopsy tissue with use of a global DNA screening platform. Global screening is a promising tool for the diagnosis of CNS infection, especially when traditional diagnostic tools are insensitive.
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Affiliation(s)
- Amanda T Harrington
- Department of Laboratory Medicine, Division of Infectious Diseases, University of Washington, Seattle, WA, USA
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Geurts N, Martens E, Van Aelst I, Proost P, Opdenakker G, Van den Steen PE. β-Hematin Interaction with the Hemopexin Domain of Gelatinase B/MMP-9 Provokes Autocatalytic Processing of the Propeptide, Thereby Priming Activation by MMP-3. Biochemistry 2008; 47:2689-99. [DOI: 10.1021/bi702260q] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nathalie Geurts
- Laboratory of Immunobiology and Laboratory of Molecular Immunology, Rega Institute for Medical Research, Catholic University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Erik Martens
- Laboratory of Immunobiology and Laboratory of Molecular Immunology, Rega Institute for Medical Research, Catholic University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Ilse Van Aelst
- Laboratory of Immunobiology and Laboratory of Molecular Immunology, Rega Institute for Medical Research, Catholic University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Paul Proost
- Laboratory of Immunobiology and Laboratory of Molecular Immunology, Rega Institute for Medical Research, Catholic University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Ghislain Opdenakker
- Laboratory of Immunobiology and Laboratory of Molecular Immunology, Rega Institute for Medical Research, Catholic University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
| | - Philippe E. Van den Steen
- Laboratory of Immunobiology and Laboratory of Molecular Immunology, Rega Institute for Medical Research, Catholic University of Leuven, Minderbroedersstraat 10, 3000 Leuven, Belgium
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Abstract
Taeniasis due to Taenia solium is a disease with important public health consequences, since the larval stage is not exclusive to the animal intermediate, the pig, but also infects humans, causing neurocysticercosis. Early diagnosis and treatment of T. solium tapeworm carriers is important to prevent human cysticercosis. Current diagnosis based on microscopic observation of eggs lacks both sensitivity and specificity. In the present study, a nested-PCR assay targeting the Tso31 gene was developed for the specific diagnosis of taeniasis due to T. solium. Initial specificity and sensitivity testing was performed using stored known T. solium-positive and -negative samples. The assay was further analyzed under field conditions by conducting a case-control study of pretreatment stool samples collected from a population in an area of endemicity. Using the archived samples, the assay showed 97% (31/32) sensitivity and 100% (123/123) specificity. Under field conditions, the assay had 100% sensitivity and specificity using microscopy/enzyme-linked immunosorbent assay coproantigen testing as the gold standards. The Tso31 nested PCR described here might be a useful tool for the early diagnosis and prevention of taeniasis/cysticercosis.
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Zhang L, Hu M, Jones A, Allsopp BA, Beveridge I, Schindler AR, Gasser RB. Characterization of Taenia madoquae and Taenia regis from carnivores in Kenya using genetic markers in nuclear and mitochondrial DNA, and their relationships with other selected taeniids. Mol Cell Probes 2007; 21:379-85. [PMID: 17600673 DOI: 10.1016/j.mcp.2007.05.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2007] [Revised: 05/02/2007] [Accepted: 05/09/2007] [Indexed: 11/21/2022]
Abstract
In the present study, we have extended earlier taxonomic, biochemical and experimental investigations to characterize two species of Taenia from carnivores in Kenya by use of the sequences of a variable domain (D1) of nuclear ribosomal DNA and the cytochrome c oxidase subunit 1 and NADH dehydrogenase 1 genes of mitochondrial DNA. Emphasis was placed on the characterization of Taenia madoquae from the silver-backed jackal (Canis mesomelas) and Taenia regis from the lion (Panthera leo), given the previous absence of any DNA sequence data for them, and on assessing their genetic relationships with socioeconomically important taeniids. The study showed that T. regis was genetically most closely related to T. hydatigena, and T. madoquae to T. serialis, T. multiceps or T. saginata. The present findings provide a stimulus for future work on the systematic relationships and epidemiology of lesser-known taeniid cestodes in Africa and other continents, employing mitochondrial sequence data sets.
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Affiliation(s)
- L Zhang
- Department of Veterinary Science, The University of Melbourne, 250 Princes Highway, Werribee, Victoria 3030, Australia
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Yamasaki H, Nakaya K, Nakao M, Sako Y, Ito A. Significance of Molecular Diagnosis using Histopathological Specimens in Cestode Zoonoses. Trop Med Health 2007. [DOI: 10.2149/tmh.35.307] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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