Abstract：
:Some cyclophyllidean cestodes provide protection for their eggs in the external environment by providing them with additional protective layers around the egg membranes. In attempting to examine such adaptations, the microanatomy and fine structure of the uterus of pregravid and gravid proglottids of the cyclophyllidean cestode Orthoskrjabinia junlanae, a parasite of mammals that inhabit a terrestrial but moist environment, were studied. In the initial stages of uterine development, developing embryos locate freely in the lumen of a saccate uterus that later partitions into chambers. Each chamber that forms encloses several embryos. The chambers are surrounded by muscle cells that synthesize extracellular matrix actively. The paruterine organs consist of stacks of flattened long outgrowths of muscular cells, interspersed with small lipid droplets. In the gravid proglottids, the size of paruterine organ increases and consists of flattened basal and small rounded apical parts separated by constrictions. The fine structure of the organ wall remains the same: sparse nuclei and stacks of flattened cytoplasmic outgrowths but internal invaginations or lumen in the paruterine organ are absent. Completely developed eggs remain localized in the uterus. Based on the comparative morpho-functional analysis of uterine and paruterine organs and uterine capsules in cestodes, we conclude that these non-functioning paruterine organ in O. junlanae is an example of an atavism. We postulate that the life cycle of the parasite, which infects mammals living in wet habitats, where threats of desiccation of parasite ova is reduced, has favoured a reversion to a more ancestral form of uterine development.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Korneva JV,Kornienko SA,Jones MKdoi
10.1007/s00436-016-4997-2subject
Has Abstractpub_date
2016-06-01 00:00:00pages
2449-57issue
6eissn
0932-0113issn
1432-1955pii
10.1007/s00436-016-4997-2journal_volume
115pub_type
杂志文章abstract：:Gyrodactylid monogeneans are considered to be the most invasive fish parasites. They are omnipresent on teleost fishes and host change might play a crucial role in their biology. In the present study, related fish species were kept in single- or mixed-species groups to test the ability of Gyrodactylus species to chang...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-008-0918-3
更新日期：2008-05-01 00:00:00
abstract：:Tungiasis is endemic in many countries in Latin America, the Caribbean and sub-Saharan Africa, and it is associated with severe morbidity. The pathophysiological and immunological characteristics of the ectoparasitosis are not well understood, and no effective therapy is currently available. The aim of this study was ...
journal_title：Parasitology research
pub_type： 杂志文章,评审
doi：10.1007/s00436-007-0731-4
更新日期：2007-12-01 00:00:00
abstract：:Blastocystis hominis has been reclassified as a protozoan parasite. Its role as a human pathogen is somewhat controversial. There has been a dramatic increase in the frequency of B. hominis infection in association with diarrhea especially in immunocompromised hosts like AIDS patients, travelers, homosexuals, day care...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-013-3652-4
更新日期：2014-01-01 00:00:00
abstract：:A study was made to determine the prevalence of camel trypanosomosis (surra) and its associated risk factors in Borena zone, southern Ethiopia during 2013-2014. A total of 2400 blood samples were collected and examined by the buffy coat and thin blood film laboratory methods, and data were analyzed using the SPSS stat...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-015-4845-9
更新日期：2016-03-01 00:00:00
abstract：:The aims of this study were to examine specimens of Contracaecum rudolphii from Australian hosts, both morphologically and genetically, based on the ITS-1 and ITS-2 sequence data, to provide a re-description for the species and to investigate the genetic make-up of this species in Australia. Morphological examination ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-009-1424-y
更新日期：2009-08-01 00:00:00
abstract：:The phylogenetic placement of gregarine parasites (Apicomplexa: Gregarinasina) within the Apicomplexa was derived by comparison of small-subunit ribosomal RNA gene sequences. Gregarine sequences were obtained from Gregarina niphandrodes Clopton, Percival, and Janovy, 1991, and Monocystis agilis Stein, 1848 (Eugregarin...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050655
更新日期：1999-11-01 00:00:00
abstract：:In 1978, the nature of the hypnozoite was discussed in an article that appeared in a relatively obscure journal, which is also where the term was adopted for Plasmodium (a little-known fact). As a result, that commentary on the use of the word "hypnozoite" has been almost completely overlooked. Although the publicatio...
journal_title：Parasitology research
pub_type： 历史文章,杂志文章,评审
doi：10.1007/s00436-010-2072-y
更新日期：2011-01-01 00:00:00
abstract：:Malaria is caused by unicellular parasites of the genus Plasmodium, which reside in erythrocytes during the clinically relevant stage of infection. To separate parasite from host cell material, haemolytic agents such as saponin are widely used. Previous electron microscopy studies on saponin-treated parasites reported...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-020-06932-9
更新日期：2020-12-01 00:00:00
abstract：:We have previously reported the involvement of cyclic AMP in regulating flagellar waveforms in Leishmania. Here, we investigated the roles of calcium, calmodulin, and calcineurin in flagellar motility regulation in L. donovani. Using high-speed videomicroscopy, we show that calcium-independent calmodulin and calcineur...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-017-5608-6
更新日期：2017-11-01 00:00:00
abstract：:Chagas disease, caused by the protozoan Trypanosoma cruzi, is considered to be a multifactorial disease associated with host and parasite genetics, which influence clinical aspects of the disease and other host conditions. In order to understand better the evolution of the disease, this study intended to evaluation of...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-5969-5
更新日期：2018-09-01 00:00:00
abstract：:A 1-month-old brown wood owlet (Strix leptogrammica) purchased from a wholesaler and housed as a companion bird by an individual owner in Japan showed severe dehydration and anorexia following a week of vomiting and severe diarrhea. A great number of approximately 5 × 4-μm-sized Cryptosporidium oocysts were found in t...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-5951-2
更新日期：2018-09-01 00:00:00
abstract：:Bimiracidial infections of Lymnaea ovata with Fasciola hepatica were performed under laboratory conditions to determine the susceptibility of snails from six French populations to trematode infection. In five populations of L. ovata the prevalence of infection in the 1-mm groups ranged between 2.7% and 43.7% at day 35...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050013
更新日期：2000-01-01 00:00:00
abstract：:The present study reports on the antifilarial activity of a marine sponge Haliclona exigua (phylum Porifera). The crude methanol extract and n-butanol-soluble fraction killed adult Brugia malayi at 31.25-microg/ml concentration (both in motility and 3-(4,5 dimethylthiazol-2-yl)-2,5 diphenyl tetrazolium bromide assay) ...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-009-1555-1
更新日期：2009-10-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-5933-4
更新日期：2018-08-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-018-5957-9
更新日期：2018-08-01 00:00:00
abstract：:Amebic cysteine protease 2 (EhCP2) was purified from ethyl ether extracts of axenically grown trophozoites of Entamoeba histolytica strain HM1-IMSS. The purification procedure involved molecular filtration and electroelution. Sequence analysis of the purified product revealed EhCP2 and ubiquitin(s). Electrophoretic mi...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-002-0763-8
更新日期：2003-06-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-017-5512-0
更新日期：2017-08-01 00:00:00
abstract：:Nucleotide sequences of the triose phosphate isomerase (TPI) gene (624 bp) and mitochondrial cytochrome b (cob) gene (520 bp) were obtained by PCR and evaluated for utility in inferring the phylogenetic relationships among Trichuris species. Published sequences of one other nuclear gene (18S or SSU rRNA, 1816-1846 bp)...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-015-4705-7
更新日期：2015-12-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00535333
更新日期：1987-01-01 00:00:00
abstract：:Toxoplasmosis is a disease with a worldwide distribution that affects a wide variety of animal species, though with rare descriptions in chickens. We describe the clinical, epidemiological, pathological, and molecular aspects of a toxoplasmosis outbreak in domestic chickens and guinea fowl in southern Brazil. The floc...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-019-06233-w
更新日期：2019-03-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050241
更新日期：1997-01-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/BF00932672
更新日期：1994-01-01 00:00:00
abstract：:The vitellarium of the invasive caryophyllidean tapeworm Khawia sinensis Hsü, 1935 from carp Cyprinus carpio L. was examined by means of transmission electron microscopy and cytochemical staining for glycogen with periodic acid-thiosemicarbazide-silver proteinate (PA-TSC-SP). A vitellarium consists of numerous follicl...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-013-3477-1
更新日期：2013-07-01 00:00:00
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journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-013-3309-3
更新日期：2013-05-01 00:00:00
abstract：:An optimized protocol is presented to visualize gene expression in the sedentary beet cyst nematode, Heterodera schachtii, by whole-mount in situ hybridization. Two different probes were used for genes with known expression pattern in other nematodes. Vacuum infiltration of the fixative significantly increased its eff...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-002-0661-0
更新日期：2002-08-01 00:00:00
abstract：:Free living amoebae (FLA) are protists ubiquitously present in the environment. Aspergillus fumigatus is a mould responsible for severe deep-seated infections, and that can be recovered in the same habitats as the FLA. By conducting coculture experiments and fungal incubation with amoebal supernatants, we report herei...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-016-5182-3
更新日期：2016-11-01 00:00:00
abstract：:Chagas disease (CD) is a tropical zoonosis caused by the protozoan Trypanosoma cruzi. Severe autonomic dysfunction like reduced cardiac catecholamine-containing or acetylcholinesterase-positive innervation have been reported in CD. Renin-angiotensin system (RAS) seems to participate in the regulation of adrenal catech...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-019-06485-6
更新日期：2020-01-01 00:00:00
abstract：:Blastocystis is a zoonotic protozoan parasite frequently identified in the intestinal tract of humans and a vast variety of animals, worldwide. Here, we assessed the prevalence of Blastocystis and its subtypes in stool samples of raccoons. Stool samples from 30 raccoons were collected. Total DNA was extracted, and the...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-020-06770-9
更新日期：2020-08-01 00:00:00
abstract：:In the search of alternatives for the control of mosquitoes of medical importance, we evaluated the larvicidal activity of micronized suspensions of calcium hydroxide [Ca(OH)₂] against Aedes aegypti and Culex quinquefasciatus. Tests conducted under laboratory conditions determined a LC50 = 0.027% (LC90 = 0.096%) for A...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s00436-011-2593-z
更新日期：2012-03-01 00:00:00
abstract：:Efforts to derive a physical map of the genome of Eimeria tenella are being made to complement genetic mapping and to assist in the production of an integrated map. A large insert library of DNA from the Houghton (H) reference strain of E. tenella has been constructed in yeast artificial chromosomes (YACs). The librar...
journal_title：Parasitology research
pub_type： 杂志文章
doi：10.1007/s004360050349
更新日期：1998-01-01 00:00:00
