Klíšťata sají obrovské množství krve, která je jejich jediným zdrojem živin a energie. Přesný enzymatický mechanismus zpracování krve ve střevě klíšťat však kupodivu nebyl donedávna vůbec znám. Náš komplexní molekulární model trávení hostitelského hemoglobinu u klíštěte obecného (Ixodes ricinus) poprvé odhalil analogii enzymatického aparátu s krevsajícími ploštěnci a hlísticemi, a zároveň tato znalost představuje zásadní poznatek pro účinný boj s klíšťaty a jimi přenášenými patogeny., Ticks (in this case Ixodidae and Argasidae) feed on enormous amounts of host blood, which provides their ultimate source of energy and nutrients. There has been only limited evidence on the exact molecular mechanisms of blood digestion in ticks. For the first time, our complex enzymatic model of proteolytic digestion in the Common Tick (Ixodes ricinus) reveals the analogy of tick intestinal proteolysis with bloodfeeding platyhelminthes and nematodes and presents a future application potential in tick or tick-borne pathogen interventions., and Daniel Sojka.
Antiparasitic allogrooming in two adults of Red Fox (Vulpes vulpes) was observed in the Javorie Mountains in Slovakia on 18th April 2016. This rare observation was documented by photographs and video. In this context, the occurrence of ticks on Red Foxes and in fox faeces in Europe is briefly reviewed and discussed. and Ivan Literák.
The purpose of the workshop, which took place in 8-15 June 2008, was to train scientists to manage and exploit large EST datasets as well as compare whole genome sequences, with the aim of faciliting the application of genomic technologies to ticks and tickbornepathogens. The course provided an overview of the mehods used to sequence, assemble, and annotate tick borne disease related genomes and EST datasets. and Libor Grubhoffer.
Animal-free set-up enables a new series of experiments; from basic research describing trophic dependences of ticks to testing anti-tick compounds. Exploiting the cunning use of silicone membrane to mimic a host skin, in combination with perfumes that resemble the scents of a living animal, scientists from the Institute of Parasitology of the Biology Centre of the CAS gradually reveal what makes the tick a parasite. The membrane system is also intended for applied research, for testing anti-tick vaccines/compounds. and Jan Perner, Matěj Kučera, Petr Kopáček.
Klíšťové neuroinfekce jsou u dětí se základní onkologickou diagnózou v anamnéze vzácné a cesta ke stanovení diagnózy může být komplikovaná pro podezření na recidivu základního onemocnění. A vice versa, navzdory příznakům pro neuroborreliózu typickým, včetně přisátí klíštěte a údaji o časné lokalizované formě borreliózy – erythema migrans, patří u dětí do diferenciální diagnostiky i nádory CNS., Tick‑borne neuroinfections are rare among children with oncologic diagnosis. Nevertheless, the diagnostic procedure may be more complicated due to suspicion of the relapse of the primary illness. Despite typical symptoms of neuroborreliosis, including tick bite and early localized borreliosis – erythema migrans, tumours of central nervous system have to be taken into account for the differential diagnosis in childhood., and L. Krbková, L. Klapačová, P. Mikolášek, M. Charvátová, I. Červinková, J. Bednářová
The aim of the present work was to determine whether Dermacentor reticulatus (Fabricius), tick species common in eastern Poland could be infected with Toxoplasma gondii (Nicolle et Manceaux, 1908). A total of 664 unfed D. reticulatus ticks were collected from six localities of Lublin province (eastern Poland) within the framework of study for the presence of bacterial, viral and parasitological infections, with use of PCR and confirmed by sequencing analysis. The prevalence of T. gondii DNA of B1 gene in the total examined D. reticulatus ticks was 3.2%. The infection varies greatly depending on the locality of tick collection (0-16.7%). Preliminary identification of clonal type (I or II/III) by Restriction Fragments Length Polymorphism PCR (RFLP-PCR) with use B1 gene showed that all isolates of T. gondii belonged to type I. RFLP analysis using genetic markers SAG1, 5'-SAG2, 3'-SAG2, SAG3, and GRA6 on B1-positive samples showed that only a single isolate proved to be type I with all five markers, another type was classified to type I according to four markers, while another five isolates had only type I alleles at GRA6, which cannot be regarded as type I confirmation. It must be pointed out that the used DNA isolation method by boiling with ammonium hydroxide enables to receive the total DNA from ticks, but may be not quite suitable for genotyping. In conclusion, this study indicates that besides Ixodes ricinus (Linnaeus), also D. reticulatus should be considered as a potential vector of T. gondii. The presumption of tick-borne transmission as an alternative pathway of disease spreading could well explain the high prevalence of toxoplasmosis among the herbivorous mammals and birds. However, this hypothesis needs verification by further experimental and ecological studies., Angelina Wójcik-Fatla, Jacek Sroka, Violetta Zając, Anna Sawczyn, Ewa Cisak, Jacek Dutkiewicz., and Obsahuje bibliografii