Trichobilharzia regenti is a neurotropic bird schistosome, causing cercarial dermatitis in humans. In this study, ZAP cDNA expression library from Radix peregra s. lat. hepatopancreases containing intramolluscan stages of T. regenti was constructed and screened using PCR with specific and degenerate primers, designed according to previously described serine and cysteine peptidases of other parasite species. Full-length sequences of cathepsins B1 and L, and two serine peptidases, named RpSP1 and RpSP2, were obtained. The protein-protein BLAST analysis and parallel control reactions with template from hepatopancreases of T. regenti non-infected snails revealed that only cathepsin B1 was of parasite origin. The remaining sequences were derived from the snail intermediate host, which implies that the initial source of parasite mRNA was contaminated by snail tissue. Regardless of this contamination, the cDNA library remains an excellent molecular tool for detection and identification of bioactive molecules in T. regenti cercariae.
Děložní myomy jsou nejčastějšími nádory dělohy u žen v reprodukčním věku. Ačkoli jsou děložní myomy ve většině případů asymptomatické, mohou být příčinou abnormálního děložního krvácení, bolesti, dyspareunie, těhotenských ztrát a infertility. Možnosti léčby děložních myomů zahrnují léčbu farmakologickou, chirurgickou, radiologickou a dále myolýzu či léčbu fokusovaným ultrazvukem. Volba léčebné modality by měla být u každé pacientky přísně individualizována v závislosti na řadě faktorů, jako jsou reprodukční plány pacientky, přání zachovat dělohu a přítomnost a závažnost symptomů. Optimální léčba by tedy měla být minimálně invazivní, bezpečná, fertilitu-šetřící, s dlouhodobým účinkem a minimálním rizikem rekurence., Uterine fibroids are the most common tumors of the uterus in premenopausal women. Despite being asymptomatic in the majority of cases, uterine fibroids may cause abnormal vaginal bleeding, pain, dyspareunia, pregnancy losses and infertility. The treatment options include pharmacological, surgical and radiological treatment as well as myolysis or focused ultrasound treatment. The therapeutic modality selection should be strictly individualized based on the reproductive plans of the patient, desire to preserve the uterus and the presence and severity of the symptoms. The ideal treatment should thus be minimally invasive, safe, fertility-sparing, with long term effect and with a low risk of recurrence., K. Kubínová, M. Mára, P. Horák, D. Kužel, and Literatura 24
The terminal phase of the migration of Trichobilharzia regenti Horák, Kolářová et Dvořák, 1998 in the definitive host (Anas platyrhynchos f. domestica) was studied 12-27 days post infection (p.i.). Brain meninges were the last part of the nervous system where the worms were detected before their occurrence in the nasal cavity. In meninges, the parasites started to feed on red blood cells. Then the worms occurred in the nasal mucosa 14-25 days p.i. and the first immature eggs appeared 15 days p.i. The fully developed miracidia were recorded in the eggs from 17 days p.i. and freely in the nasal mucosa 19 days p.i. Infiltrates of lymphocytes, later also eosinophils and heterophils around the eggs and free miracidia, were observed from 15 and 19 days p.i., respectively. The haemorrhages occurring from 17 days p.i., and the granulomas with lymphocytes, eosinophils and heterophils forming around the eggs from 22 days p.i. were the most apparent pathological changes of nasal tissue.