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Kulanthaivelu K, Bhat MD, Prasad C, Srinivas D, Mhatre R, Nandeesh BN. Brain MRI Findings in Coenurosis: A Helminth Infection. J Neuroimaging 2020; 30:359-369. [PMID: 32072723 DOI: 10.1111/jon.12696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 02/03/2020] [Accepted: 02/04/2020] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Parasitic neuroinfections in humans have etiological agents spanning a broad spectrum from unicellular (protozoan) to multicellular helminthic (metazoan) organisms. Cerebral coenurosis is a rare cestodal helminthic infection caused by Taenia multiceps. The neuroimaging features of this entity were reviewed to discern an imaging phenotype. METHODS Retrospective analysis was performed on 6 cases of cerebral coenurosis, whose diagnoses were confirmed by histopathology. The clinical, imaging, and histopathological features were recorded for analysis. RESULTS Clinical expressions included focal neurological deficit due to mass effect (n = 4), intraventricular obstruction with features of raised intracranial tension (n = 1), headache (n = 3), seizures (n = 3), and incidental lesions (n = 1). One patient presented with recurrence 1 year after surgical excision. Neuroimaging revealed cystic thin-walled lesions with clustered eccentric internal nodules corresponding to the plenitude of protoscolices of the tapeworm. Three of the lesions showed a multilocular cystic morphology. Spectroscopic metabolite signature of alanine and succinate commensurate with the parasitic etiology was remarkable in the lesions. Enhancement and edema inversely correlated with the signal suppression on fluid-attenuated inversion recovery (FLAIR) imaging. The lesions had a predominantly juxtacortical distribution. CONCLUSIONS In an appropriate clinical setting, a cystic lesion with clustered eccentric internal nodular foci ought to raise the suspicion of this rare infection. Magnetic resonance spectroscopic signature of succinate and alanine, if present, further strengthens the likelihood of coenurosis. Signal characteristics, wall enhancement, and perilesional edema may vary, possibly determined by the stage in the evolution of the parasite.
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Affiliation(s)
- Karthik Kulanthaivelu
- Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India, (KK, MDB, CP)
| | - Maya D Bhat
- Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India, (KK, MDB, CP)
| | - Chandrajit Prasad
- Department of Neuroimaging and Interventional Radiology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India, (KK, MDB, CP)
| | - Dwarakanath Srinivas
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India, (DS)
| | - Radhika Mhatre
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India, (RM, BNN)
| | - Bevinhalli N Nandeesh
- Department of Neuropathology, National Institute of Mental Health and Neurosciences, Bengaluru, Karnataka, India, (RM, BNN)
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Ritler D, Rufener R, Li JV, Kämpfer U, Müller J, Bühr C, Schürch S, Lundström-Stadelmann B. In vitro metabolomic footprint of the Echinococcus multilocularis metacestode. Sci Rep 2019; 9:19438. [PMID: 31857639 PMCID: PMC6923418 DOI: 10.1038/s41598-019-56073-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 12/04/2019] [Indexed: 12/17/2022] Open
Abstract
Alveolar echinococcosis (AE) is a zoonotic disease that is deadly if left untreated. AE is caused by the larval metacestode stage of the cestode Echinococcus multilocularis. Better knowledge on the host-parasite interface could yield novel targets for improvement of the treatment against AE. We analyzed culture media incubated with in vitro grown E. multilocularis metacestodes by 1H nuclear magnetic resonance spectroscopy to identify the unknown metabolic footprint of the parasite. Moreover, we quantitatively analyzed all amino acids, acetate, glucose, lactate, and succinate in time-course experiments using liquid chromatography and enzymatic assays. The E. multilocularis metacestodes consumed glucose and, surprisingly, threonine and produced succinate, acetate, and alanine as major fermentation products. The metabolic composition of vesicle fluid (VF) from in vitro grown E. multilocularis metacestodes was different from parasite-incubated culture medium with respect to the abundance, but not the spectrum, of metabolites, and some metabolites, in particular amino acids, accumulated in the VF. Overall, this study presents the first characterization of the in vitro metabolic footprint of E. multilocularis metacestodes and VF composition, and it provides the basis for analyses of potentially targetable pathways for future drug development.
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Affiliation(s)
- Dominic Ritler
- Institute of Parasitology, Department of Infectious Disease and Pathobiology, Vetsuisse Bern, University of Bern, Bern, Switzerland
| | - Reto Rufener
- Institute of Parasitology, Department of Infectious Disease and Pathobiology, Vetsuisse Bern, University of Bern, Bern, Switzerland
| | - Jia V Li
- Division of Systems and Digestive Medicine, Department of Surgery & Cancer, Imperial College London, London, United Kingdom
| | - Urs Kämpfer
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Joachim Müller
- Institute of Parasitology, Department of Infectious Disease and Pathobiology, Vetsuisse Bern, University of Bern, Bern, Switzerland
| | - Claudia Bühr
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Stefan Schürch
- Department of Chemistry and Biochemistry, University of Bern, Bern, Switzerland
| | - Britta Lundström-Stadelmann
- Institute of Parasitology, Department of Infectious Disease and Pathobiology, Vetsuisse Bern, University of Bern, Bern, Switzerland.
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The current prevalence and diversity of cystic echinococcosis in slaughtered animals in Egypt. J Parasit Dis 2019; 43:711-717. [PMID: 31749543 DOI: 10.1007/s12639-019-01151-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 08/21/2019] [Indexed: 02/02/2023] Open
Abstract
Cystic echinococcosis is a potential zoonotic helminthic disease affect a broad spectrum of mammals including humans worldwide. The economic impact of the disease interestingly requires updated gathering information on the prevalence in slaughtered animals. Accordingly, in the current study, 573 camels, 4300 sheep, and 1235 pigs were surveyed in four Egyptian municipal abattoirs. Among those, 62 (10.82%) camels, 33 (0.77%) sheep and 3 (0.24%) pigs had cystic echinococcosis in lungs, livers and spleen. The diversity of cysts revealed that positive-cystic echinococcosis animals from all species were detected in El-Basatin abattoir. In El-Monieb abattoir, sheep only were infected. In El-Waraa and Beni-Suef abattoirs, cysts were seen in camels only. Infected animals included both sexes. In camels, lungs were the most affected organs, while in sheep, livers were the most abundant. In pigs, hydatid cysts were detected only in lungs. Moreover, camel cysts were mostly large-sized (diameter > 10 cm) with smaller cysts are also recorded. In sheep, small-, moderately- and large-sized cysts were equally present. Cysts in pigs were large-sized. Camels showed a higher percentage of fertile cysts (46.77%; 29/62) followed by sheep (21.21%; 7/33). Calcified/degenerated cysts were less in camels (38.71%; 24/62) than in sheep (75.76%). Non-viable cysts were the less frequent in both species (14.52% in camels and 3.03% in sheep). All cysts recovered from pigs were fertile. In Egypt, governmental agencies and veterinary authorities are asked to potentially eradicate stray dogs (the main definitive host) and towards the proper hygienic disposal of infected offal in abattoirs to minimize the prevalence of cystic echinococcosis.
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Abstract
Infection of the central nervous system can be life-threatening and hence requires early diagnostic support for its optimal management. Routine definitive laboratory diagnostic tests can be time-consuming and delay definitive therapy. Noninvasive imaging modalities have established themselves in the diagnosis of various neurologic diseases. In this article, a pragmatic review of the current role of magnetic resonance spectroscopy in the diagnosis and management of intracranial infections is addressed.
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Affiliation(s)
- Rakesh K Gupta
- Department of Radiodiagnosis, Sanjay Gandhi Postgraduate Institute of Medical Sciences, Lucknow, Uttar Pradesh 226014, India.
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Ambekar S, Prasad C, Dwarakanath S, Mahadevan A. MRS findings in cerebral coenurosis due to Taenia multiceps. J Neuroimaging 2011; 23:149-51. [PMID: 21699611 DOI: 10.1111/j.1552-6569.2011.00616.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Cerebral coenurosis due to Taenia multiceps is a rare infection with no case reports from India. A 55-year-old male patient had presented with progressive symptoms of hemiparesis of 1-year duration. Magnetic resonance imaging (MRI) with magnetic resonance spectroscopy (MRS) of the lesion was performed that showed a septated cystic lesion in left parieto-occipital lobe. Multivoxel MRS through the lesion was performed using repetition time of 1500 ms and time to echo of 144 ms at 3T MRI. MRS showed mildly elevated choline (Cho), depressed creatine (Cr), and N-acetyl aspartate (NAA), a large peak of lactate, pyruvate, and acetate peaks. To best of our knowledge, there has been no reported case of in vivo proton MRS finding ever reported. We present MRS findings in this operatively proven case of T. multiceps cyst of the brain.
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Affiliation(s)
- Sudheer Ambekar
- Department of Neurosurgery, National Institute of Mental Health and Neurosciences, Bangalore, Karnataka, India
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Ukkola-Pons E, Ferrand-Sorbet S, Banayan E, Polivka M, Savatovsky J, Heran F. Magnetic resonance spectroscopy of a cerebral parasitic cyst. J Neuroradiol 2010; 38:260-2. [PMID: 20950859 DOI: 10.1016/j.neurad.2010.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 07/07/2010] [Accepted: 07/12/2010] [Indexed: 11/18/2022]
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Hosch W, Junghanss T, Stojkovic M, Brunetti E, Heye T, Kauffmann GW, Hull WE. Metabolic viability assessment of cystic echinococcosis using high-field 1H MRS of cyst contents. NMR IN BIOMEDICINE 2008; 21:734-754. [PMID: 18384178 DOI: 10.1002/nbm.1252] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Cystic echinococcosis is a worldwide disease caused by larval stages of the parasite Echinococcus granulosus (canine tapeworm). In clinical practice, staging of cyst development by ultrasonography (US) has allowed treatment options to be tailored to individual patient needs. However, the empirical correlation between cyst morphology and parasite viability is not always dependable and has, until now, required confirmation by invasive assessment of cyst content by light microscopy (LM), for example. Alternatively, high-field 1H MRS may be used to examine cyst fluid ex vivo and prepare detailed quantitative metabolite profiles, enabling a multivariate metabolomics approach to cyst staging. One-dimensional and two-dimensional 1H and 1H/13C MRS at 600 MHz (14.1 T) was used to analyze 50 cyst aspirates of various US and LM classes. MR parameters and concentrations relative to internal valine were determined for 44 metabolites and four substance classes. The high concentrations of succinate, fumarate, malate, acetate, alanine, and lactate found in earlier studies of viable cysts were confirmed, and additional metabolites such as myo-inositol, sorbitol, 1,5-anhydro-D-glucitol, betaine, and 2-hydroxyisovalerate were identified. Data analysis and cyst classification were performed using univariate (succinate), bivariate (succinate vs fumarate), and multivariate partial least squares discriminant analysis (PSL-DA) methods (with up to 48 metabolite variables). Metabolic classification of 23 viable and 18 nonviable cysts on the basis of succinate alone agreed with LM results. However, for seven samples, LM and MRS gave opposing results. Reclassification of these samples and two unclassified samples by PLS-DA prediction techniques led to a set of 50 samples that could be completely separated into viable and nonviable MRS classes with no overlap, using as few as nine variables: succinate, formate, malate, 2-hydroxyisovalerate, acetate, total protein content, 1,5-anhydro-D-glucitol, alanine, and betaine. Thus, future noninvasive in vivo applications of MRS would appear promising.
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Affiliation(s)
- Waldemar Hosch
- Department of Radiodiagnostics, University Hospital, Heidelberg, Germany
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Abstract
Hydatid disease, caused by Echinococcus granulosus, is a parasitic disease that is endemic in many parts of the world. Hydatid cyst demonstrates a variety of imaging features, varying according to growth stage, associated complications, and affected tissue. The radiologic findings range from purely cystic lesions to a completely solid appearance. Ultrasound is the most important imaging modality for liver hydatid disease and clearly demonstrates the floating membranes, daughter cysts, and hydatid sand characteristically seen in purely cystic lesions. The radiologist's familiarity with the imaging findings of the disease is very important for earlier diagnosis and an appropriate treatment. There are several classification schemes for liver hydatid cysts based on their ultrasound appearances; the initial classification by Gharbi et al and the World Health Organization classification are the most commonly preferred. Computed tomography and magnetic resonance imaging play a key role in recognizing the complications such as rupture and infection of cysts associated with hydatid disease. Today, percutaneous treatment of liver hydatid cysts, a safe, easily applicable, and well-tolerated method, has become the most effective and reliable treatment procedure in most cases if the hydatid cyst is viable. In patients treated with the percutaneous treatment technique, a decrease in the dimensions of the cyst, solidification of the cyst contents, and irregularity in the walls of cysts are signs suggestive of cure. The radiologist should also be familiar with the postoperative follow-up ultrasound findings of hydatid cyst to prevent misinterpretation of the hypoechoic, anechoic, or hyperechoic appearance of posttreatment hydatid disease appearance as recurrence.
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Seckin H, Yagmurlu B, Yigitkanli K, Kars HZ. Metabolic changes during successful medical therapy for brain hydatid cyst: case report. ACTA ACUST UNITED AC 2008; 70:186-9. [PMID: 18262614 DOI: 10.1016/j.surneu.2007.05.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2007] [Accepted: 05/14/2007] [Indexed: 12/17/2022]
Abstract
BACKGROUND Medical therapy for hydatid disease of the brain has been reported with encouraging results especially in small or medium-sized cysts. To date, no other case correlating the metabolite levels of the cyst with albendazole treatment has been reported. CASE DESCRIPTION A 52-year-old woman presented with left hemiparesis and seizure. Cranial magnetic resonance revealed a right frontal cystic mass lesion. A diagnosis of hydatid cyst was made, and she was put on medical therapy with albendazole. An MRS before the medical therapy was begun revealed the typical findings of a hydatid cyst with resonance of alanine, acetate, and succinate that were specific for hydatid disease, and additional nonspecific lactate peaks with an additional small peak of choline. Comparison between the multiple MRS examinations was made by comparing the metabolite ratios specific for hydatid disease to choline, which seemed stable from the beginning. Two sequential MRS imaging revealed a prominent decrease of the succinate and acetate resonance, accompanied by a smaller decline of the alanine resonance progressively, correlated with the conventional MRI findings of the cyst, which had a smaller size with blurred margins in the meantime. After 5 months of medical treatment, the cyst had completely disappeared. The patient has been monitored for 5 years and remains well without recurrence. CONCLUSIONS This case provides additional proof that the brain hydatid cyst is a medically treatable disease in appropriate cases. Furthermore, the changes in the metabolic profile of the cyst, especially those regarding succinate and acetate may represent the efficacy of the medical treatment.
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Affiliation(s)
- Hakan Seckin
- Ministry of Health, Ankara Diskapi Training and Research Hospital, 2nd Neurosurgery Clinic, Ankara, Turkey
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Kingsley PB, Shah TC, Woldenberg R. Identification of diffuse and focal brain lesions by clinical magnetic resonance spectroscopy. NMR IN BIOMEDICINE 2006; 19:435-62. [PMID: 16763970 DOI: 10.1002/nbm.1039] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
The purpose of this paper is to facilitate the comparison of magnetic resonance (MR) spectra acquired from unknown brain lesions with published spectra in order to help identify unknown lesions in clinical settings. The paper includes lists of references for published MR spectra of various brain diseases, including pyogenic abscesses, encephalitis (herpes simplex, Rasmussen's and subacute sclerosing panencephalitis), neurocysticercosis, tuberculoma, cysts (arachnoid, epidermoid and hydatid), acute disseminated encephalomyelitis (ADEM), adrenoleukodystrophy (ALD), Alexander disease, Canavan's disease, Krabbe disease (globoid cell leukodystrophy), Leigh's disease, megalencephalic leukoencephalopathy with cysts, metachromatic leukodystrophy (MLD), Pelizaeus-Merzbacher disease, Zellweger syndrome, HIV-associated lesions [cryptococcus, lymphoma, toxoplasmosis and progressive multifocal leukoencephalopathy (PML)], hydrocephalus and tuberous sclerosis. Each list includes information on the echo time(s) (TE) of the published spectra, whether a control spectrum is shown, whether the corresponding image and voxel position are shown and the patient ages if known. The references are listed in the approximate order of usefulness, based on spectral quality, number of spectra, range of echo times and whether the voxel positions are shown. Spectra of Zellweger syndrome, cryptococcal infection, toxoplasmosis and lymphoma are included, along with a spectrum showing propanediol (propylene glycol).
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Affiliation(s)
- Peter B Kingsley
- Department of Radiology, North Shore University Hospital, 300 Community Drive, Manhasset, NY 11030, USA.
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Manterola C, Vial M, Melo A, Oberg C, Fonseca F. Viability and Fertility of Human Hepatic Hydatid Cysts. World J Surg 2006; 30:227-32. [PMID: 16425083 DOI: 10.1007/s00268-005-0215-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
INTRODUCTION The adequate treatment for hydatidosis requires a knowledge of certain aspects related to the survival of infectious agents, especially protoscoleces. The aim of this study is to evaluate the viability of protoscoleces in human hepatic hydatid cysts in order to determine the prevalence of their fertility and to study the association with variables typical of the host and of the parasite. MATERIALS A cross-sectional study was done in biological material (the fluid from human hepatic hydatid cysts). The viability criteria used were: ovoid form, invaginated scolices and intact calcareous corpuscles, the presence of vibrating movements, and the absence of "vital" staining. The cysts were grouped as univesicular cysts (UVC), multivesicular cysts (MVC) and abscessed cysts (LAHO). Fertility was defined as living protoscoleces in relation to the total number of protoscoleces. Descriptive statistics were for the calculation of the prevalence of fertility, analytical statistics for the comparison of groups, and a multivariate analysis for the examination of the association between cyst fertility and clinical variables. RESULTS A total of 163 cysts with a median diameter of 15 cm were studied in this way. Of these lesions, 79 (48.5%) were UVC, 54 (33.1%) MVC, and 30 (18.4%) LAHO. On 99 occasions (60.7%), macroscopic communication was evident in the bile duct, and a prevalence of general fertility of 57.1% (94.4% for MVC, 53.2% for UVC, and 0% for LAHO, with a value of P<0.001). Association with location, type, and diameter of the cyst, and presence of biliary communications was verified by applying a bivariate analysis, and association between fertility and the variables of the type of the cyst and the existence of biliary communications was verified employing a multivariate analysis (P values of 0.004 and <0.001, respectively). CONCLUSIONS The prevalence of fertility found was low. The main prevalence of fertility was observed in MVCs. Fertility is associated with the type of cyst and the presence of biliary communications.
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Affiliation(s)
- Carlos Manterola
- Department of Surgery, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
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Jayakumar PN. Response. J Magn Reson Imaging 2004. [DOI: 10.1002/jmri.20222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Chawla S, Kumar S, Gupta RK. Marker of parasitic cysts on in vivo proton magnetic resonance spectroscopy: Is it succinate or pyruvate? J Magn Reson Imaging 2004; 20:1052-3; author reply 1053. [PMID: 15558564 DOI: 10.1002/jmri.20221] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Raether W, Hänel H. Epidemiology, clinical manifestations and diagnosis of zoonotic cestode infections: an update. Parasitol Res 2003; 91:412-38. [PMID: 13680371 DOI: 10.1007/s00436-003-0903-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2003] [Accepted: 05/21/2003] [Indexed: 02/06/2023]
Abstract
This paper reviews the literature on zoonotic cestode infections with specific reference to the years 1999-2003. The sources and prevalence of various zoonotic tapeworm infections caused by adult and larval stages of the genera Taenia, Echinococcus, Diphyllobothrium, Hymenolepis and Dipylidium continue to be an important cause of morbidity and mortality, not only in most underdeveloped countries but also in industrialized countries, particularly in rural areas or among immigrant groups from endemic areas. The review gives a detailed report on recent molecular epidemiological studies on the taxonomy and phylogenetic variations in Echinococcus granulosus, immunological tests and imaging techniques used in epidemiological surveys and clinical investigations of important adult and larval tapeworm infections of animals and humans. Larval stages or metacestodes of Taenia solium, Echinococcus spp. and pseudophyllidean tapeworms (Spirometra syn. Diphyllobothrium spp.) may reside in various tissues of their intermediate hosts, including humans. In particular, Cysticercus cellulosae (T. solium) and the larvae of E. granulosus, and E. multilocularis, which are predominantly located in the liver, lungs and central nervous system forming various types of cysts, lead to a complex of systemic diseases such as cysticercosis, cystic echinococcosis and alveolar echinococcosis, respectively. Relatively rare clinical manifestations are seen in the muscles, subcutaneous tissue, spleen, kidneys, bones and body cavities.
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Affiliation(s)
- W Raether
- Fa Aventis, ADMEP /Q0/10, 65926 Frankfurt am Main, Germany
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Current awareness in NMR in biomedicine. NMR IN BIOMEDICINE 2003; 16:56-65. [PMID: 12619641 DOI: 10.1002/nbm.799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
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