Abstract:
:Spermiogenesis of the pseudophyllidean tapeworm Eubothrium crassum has been described by the aid of transmission electron microscopy for the first time. Initially, early spermatids form a distal cytoplasmic protrusion, a differentiation zone containing a small electron-dense, apically oriented region. Out of this region, two centrioles with rootlets develop. The centrioles become orientated in the same plane with the appearance of an intercentriolar body. Now, the long axes of the rootlets are parallel with each other and with the long axis of the nucleus. Two flagella of subsequently unequal length are formed very rapidly. Simultaneously, a median cytoplasmic process (MCP) develops distal to the flagella. Two arching membranes appear at the base of the differentiation zone. Each flagellum, still being in contact with an intercentriolar body, rotates to a position parallel with the MCP. The nucleus migrates very rapidly into the MCP at this stage. Subsequently, the two flagella fuse with the MCP. Finally, the basal bodies with the rootlets detach from the flagella, the intercentriolar body changes its structure and spermatids are pinched off from a condensing residual cytoplasm at the level of the arching membranes.
journal_name
Parasitol Resjournal_title
Parasitology researchauthors
Brunanská M,Nebesárová J,Scholz T,Fagerholm HPdoi
10.1007/s004360100392subject
Has Abstractpub_date
2001-08-01 00:00:00pages
579-88issue
8eissn
0932-0113issn
1432-1955journal_volume
87pub_type
杂志文章abstract::Antibody responses to naturally acquired Plasmodium relictum and P. elongatum infections, blood parasitemia, and disease signs were investigated in 23 naive juvenile African black-footed penguins (Spheniscus demersus). Anti-Plasmodium spp. immunoglobulins were detected by enzyme-linked immunosorbent assay (ELISA) usin...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00932944
更新日期:1994-01-01 00:00:00
abstract::The essential oil of Cananga odorata flowers was evaluated for oviposition-deterrent, ovicidal, insecticidal, and repellent activities toward three mosquito species: Aedes aegypti, Anopheles dirus, and Culex quinquefasciatus. Oviposition deterrence of the oil was evaluated on gravid females using oviposition deterrenc...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4699-1
更新日期:2015-12-01 00:00:00
abstract::Differentiation between viable and non-viable hookworm ova in environmental samples is necessary in order to implement strategies to mitigate re-infections in endemic regions. In this study, an untargeted metabolic profiling method was developed that utilised gas chromatography-mass spectrometry (GC-MS) in order to in...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-016-5112-4
更新日期:2016-09-01 00:00:00
abstract::One cDNA clone was purified from an adult Clonorchis sinensis cDNA library, and its deduced polypeptide sequence was found to be homologous with myosin regulatory light chain (MRLC) of invertebrates and vertebrates. Two amino-acid residues, Thr and Ser, were conserved at the phosphorylation sites that regulate the fun...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-005-1376-9
更新日期:2005-08-01 00:00:00
abstract::The electron microscopic investigation of the anterior part of the infective third-stage juvenile of Onchocerca volvulus provides first insights into the structure of the excretory system of this developmental stage of the parasite. The most anterior part of this system consists of a cell process of the syncytial excr...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00931502
更新日期:1995-01-01 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::In Europe, mosquito-related public health concerns are growing due to the increasing spread of invasive mosquito species and the recent emergence of mosquito-borne arboviruses. A vital backbone in the assessment of these issues is detailed knowledge of the mosquito fauna, i.e. regional mosquito inventories. It was the...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-014-3952-3
更新日期:2014-08-01 00:00:00
abstract::With climate warming, malaria in humans and birds at upper elevations is an emerging infectious disease because development of the parasite in the mosquito vector and vector life history are both temperature dependent. An enhanced-mosquito-movement model from climate warming predicts increased transmission of malaria ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-013-3578-x
更新日期:2013-11-01 00:00:00
abstract::In the present study, we sequenced and analyzed the mitochondrial (mt) genome of Gastrothylax crumenifer and compared it with other selected trematodes. The full mt genome of G. crumenifer was amplified, sequenced, assembled, analyzed and then subjected to phylogenetic analysis. The complete mt genome of G. crumenifer...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-016-5019-0
更新日期:2016-06-01 00:00:00
abstract::The polymerase chain reaction (PCR) assay has turned out to be one of the most potential tools for diagnosis of schistosomiasis. However, the source and metabolic dynamics of Schistosoma japonicum DNA in the blood of hosts is not clear. In this study, rabbit models with monosexual and mixed sexual cercariae infection ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-012-3115-3
更新日期:2013-01-01 00:00:00
abstract::Precise identification of avian schistosomes in the genus Trichobilharzia at the species level is difficult and requires both traditional morphological and molecular techniques. To obtain satisfactory results by traditional methods, the characteristics of the intact adults or large fragments of male and females are ne...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-019-06573-7
更新日期:2020-03-01 00:00:00
abstract::Mosquito foraging behavior is a determinant of host-vector contact and has an impact on the risk of arboviral epidemics. Therefore, blood-feeding patterns is a useful tool for assessing the role in pathogen transmission by vector mosquitoes. Competent vectors of dengue and chikungunya viz. Aedes aegypti and Aedes albo...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4634-5
更新日期:2015-09-01 00:00:00
abstract::On a global basis, ticks transmit a greater variety of pathogenic microorganisms, protozoa, rickettsiae, spirochaets, and viruses than any other arthropods and are among the most important vectors of diseases affecting livestock, humans, and companion animals. Ticks and tick-borne diseases (TTBDs) affect 80% of the wo...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-007-0684-7
更新日期:2007-09-01 00:00:00
abstract::Trypanosoma cruzi causes Chagas' disease, a systemic infection that affects cells of meso-, endo-, and ectodermic origin. However, as far as we know, the presence of T. cruzi stages in bone has not been reported previously, and it has scarcely been investigated in cartilage. We inoculated 7- and 20-day-old (8 and 15 g...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-006-0211-2
更新日期:2006-11-01 00:00:00
abstract::To date classification and differentiation of Alaria spp. are based largely on external characteristics and comparative morphology of adult flukes. The accurate differentiation between various Alaria spp. mesocercariae is indeed difficult because there are only few data on morphological and morphometrical features of ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-010-2240-0
更新日期:2011-05-01 00:00:00
abstract::The localisation and distribution of the cholinergic, serotoninergic and peptidergic components of the nervous system of the frog-lung fluke Haplometra cylindracea have been determined by the application of standard enzyme cytochemical and immunocytochemical techniques to cryostat sections and whole-mount preparations...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00931056
更新日期:1990-01-01 00:00:00
abstract::Spermiogenesis and the spermatozoon ultrastructure of the cestode Nippotaenia mogurndae Yamaguti et Myiata, 1940 (Nippotaeniidea), a parasite of Perccottus glenii Dubowski, 1877 (Perciformes: Odontobutidae), have been investigated by means of transmission electron microscopy, cytochemical staining with periodic acid-t...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4327-0
更新日期:2015-04-01 00:00:00
abstract::Twenty-five isolates of Echinococcus granulosus protoscoleces from hydatid cysts were collected from 25 buffaloes in five different provinces of Iran. DNA was extracted from protoscoleces and used for phylogenetical analysis. For this aim, the DNA was amplified using specific primers derived from cox1 gene and, subseq...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-010-2170-x
更新日期:2011-05-01 00:00:00
abstract::This study presents the ultrastructural characteristics of sporogenesis in the genus Myxobolus which infects four economically important Egyptian fishes: Oreochromis niloticus niloticus, Barbus bynni, Labeo niloticus and Hydrocynus forskalii, specimens of which were collected at Giza city. Although the cysts were obse...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-004-1250-1
更新日期:2005-02-01 00:00:00
abstract::The accuracies of relative gene expressions as determined by quantitative real-time polymerase chain reaction are largely dependent on the variabilities of the reference genes used. Validation of the stabilities of reference genes under experimental conditions is an essential initial step for comparative studies on th...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-008-1195-x
更新日期:2009-01-01 00:00:00
abstract::During our investigations on helminthofauna in roe deer (Capreolus capreolus) and red deer (Cervus elaphus) in France (1985-1998) we isolated nematodes not only of the genus Haemonchus Cobb, 1898 but also of the genus Ashworthius Le Roux 1930, both of which belong to the same subfamily of Haemonchinae. The prevalence ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/pl00008534
更新日期:2000-07-01 00:00:00
abstract::Surface-enhanced laser desorption ionization time of flight mass spectrometry (SELDI-TOF MS) ProteinChip assays with weak cationic exchange chips were used for protein profiling of different isolates of Entamoeba histolytica and E. dispar. When SELDI-TOF MS spectra of cell lysates from E. histolytica strain HM-1:IMSS ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-007-0736-z
更新日期:2007-12-01 00:00:00
abstract::Artesuante (AS) is a good chemoprophylactic drug for preventing against schistosome infection, but Hua et al. recently reported that the sensitivity of AS against Schistosoma japonicum decreased after 10 years of use in China. There are at least three problems, to our knowledge, making the finding suspicious or inconc...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-011-2641-8
更新日期:2012-04-01 00:00:00
abstract::To quantify the effect of Nosema algerae (Microsporidia, Nosematidae) on the development of Plasmodium falciparum in Anopheles stephensi (Diptera, Culicidae), we carried out infection experiments under standardized laboratory conditions. Apart from a mean reduction of 69% in oocyst development, smaller numbers of oocy...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00931661
更新日期:1992-01-01 00:00:00
abstract::Following the emergence of Schmallenberg virus (SBV) in 2011, 21,397 culicoid biting midges (Diptera: Ceratopogonidae) from targeted and non-targeted sampling activities carried out during the summer months of 2011 to 2013 and in late 2014 in various regions in Germany were analyzed for the virus by real-time RT-PCR. ...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-015-4768-5
更新日期:2016-02-01 00:00:00
abstract::With the aim of proposing an alternative model to animal experimentation, we investigated cytokine production in response to antigens in an in vitro system. This is a co-culture system of healthy human leukocytes and enterocyte-like Caco-2 cells. The antigens tested, EgA31, EgTrp, and FABP1, are candidates for vaccine...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-004-1075-y
更新日期:2004-04-01 00:00:00
abstract::Previous studies have shown that excretory/secretory products of larval Taenia crassiceps have immunomodulatory activities. We report here that one of these products, termed p66, possesses activities that mimic some characteristics of murine interferon-gamma (IFN-gamma). Purified p66 cross-reacts with anti-murine IFN-...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-002-0590-y
更新日期:2002-05-01 00:00:00
abstract::Intestines of California sea lion (Zalophus californianus) pups (n= 204), born in 2002 on San Miguel Island, California, were examined for hookworms (Uncinaria spp.) as part of a seasonal mortality study from June through December 2002 and January 2003. The investigation was planned to coincide with most of the previo...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-005-1335-5
更新日期:2005-05-01 00:00:00
abstract::Exsheathment and midgut invasion of nocturnally subperiodic Brugia malayi microfilariae were analyzed using light and scanning electron microscopy in a refractory vector, Aedes aegypti (Thailand strain). Results showed that exsheathed microfilariae represented only approximately 1% of the total microfilaria midguts di...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/s00436-014-4086-3
更新日期:2014-11-01 00:00:00
abstract::A detailed study of the surface topography of the echinostome digenean Mesorchis denticulatus (Rudolphi 1802) Dietz 1909 was carried out using the scanning electron microscope. The surface area of the redia is increased by microvilli, and ciliate sensory structures are common around the mouth. The cannibalistic behavi...
journal_title:Parasitology research
pub_type: 杂志文章
doi:10.1007/BF00536336
更新日期:1987-01-01 00:00:00