Nová evropská doporučení v oblasti trvalé kardiostimulace obsahují novou klasifikaci bradykardií indikovaných k trvalé kardiostimulaci dle vyvolávajícího mechanizmu. Ke každému typu bradykardie navrhují vhodnou diagnostiku a optimální způsob trvalé stimulace. V závěru jsou navržena optimální bezpečnostní opatření, pokud pacient s implantovaným kardiostimulátorem potřebuje podstoupit vyšetření magnetickou rezonancí., The new European recommendations in permanent cardiac pacing include a new classification of bradycardia indicated for permanent pacing according to inducing mechanism. For each type of bradycardia suggest the appropriate diagnostic method and the optimal mode of permanent stimulation. Optimal safety measures are proposed when a patient with an implanted pacemaker needs to undergo an magnetic resonance imaging., and Heinc P., Kováčik F., Moravec O., Přeček J., Táborský M.
a1_During a recent parasitological survey of elasmobranchs along the coast of Argentina, two new species of eutetrarhynchid cestodes of the genera Dollfusiella Campbell et Beveridge, 1994 and Mecistobothrium Heinz et Dailey, 1974 were collected from batoids. Dollfusiella acuta sp. n. was found in four arhynchobatid skates, i.e. Sympterygia acuta Garman (type host), Sympterygia bonapartii Müller et Henle, Atlantoraja castelnaui (Miranda Ribeiro) and Atlantoraja platana (Günther), and Mecistobothrium oblongum sp. n. in the eagle ray Myliobatis goodei Garman. Dollfusiella acuta sp. n. has a tentacular armature consisting of basal rows of uncinate hooks, a distinct basal swelling with uncinate, falcate and bill hooks, and a heteroacanthous metabasal armature with heteromorphous hooks (bothrial uncinate hooks and antibothrial falcate hooks), hooks 1(1') not separated, testes in two columns and an internal seminal vesicle. The tentacular armature of M. oblongum sp. n. is characterised by basal rows of uncinate hooks, a basal swelling with uncinate and falcate hooks, a typical heteroacanthous metabasal armature with heteromorphous hooks (uncinate and falcate to spiniform), and hooks 1(1') separated and of a constant size along the tentacle. It also possesses an elongate scolex, numerous testes arranged in 5-6 irregular columns, and an internal seminal vesicle. The discovery of M. oblongum in M. goodei represents the first record of species of Mecistobothrium in the southwestern Atlantic Ocean. An amended description of Dollfusiella cortezensis (Friggens et Duszynski, 2005) is also provided to clarify details of the scolex and tentacular armature. Members of Dollfusiella in the southwestern Atlantic are specific to a single host species or to a particular host family, while M. oblongum was found in a single host species., a2_Although globally some plerocerci of eutetrarhynchids have been found in teleosts, extensive examination of teleosts off the coast of Argentina suggests that the transmission pathways of these species are exclusively based on invertebrates as intermediate or paratenic hosts., Adriana Menoret, Verónica A. Ivanov., and Obsahuje bibliografii
Membrane-bound proteases from preparations of the midgut of 5th instar velvetbean caterpillars, Anticarsia gemmatalis (Hübner) were obtained by resuspension of the pellet obtained after 100,000 g centrifugation. As expected of trypsin-like proteases, they hydrolyzed casein and the synthetic substrates N-α-benzoyl-L-Arg-p-nitroanilidine (L-BApNA) and N-α-p-tosyl-L-Arg methyl ester (L-TAME). Higher activities were observed at 50°C, and at pH 8.5 and 8.0 for both synthetic substrates L-BApNA and L-TAME. The membrane-bound proteases were inhibited by EDTA, phenylmethan sulphonyl fluoride (PMSF), tosyl-L-lysine chloromethyl ketone (TLCK), benzamidine and aprotinin. TLCK and benzamidine were particularly active inhibitors. The KM-values obtained were 0.23 mM for L-BApNA and 92.5 µM for L-TAME. These results provide evidence for the presence of membrane-bound trypsin-like proteases in the midgut of the velvetbean caterpillar, a key soybean pest in warm climates. The interaction between A. gemmatalis digestive proteases and soybean protease inhibitors has potentially important consequences for soybean breeding programs.
Tumour necrosis factor-stimulated gene 6 (TSG6) is a protective inflammatory reaction gene which is upregulated by inflammatory processes. Recent studies suggest that TSG-6 exhibits anti-scar-ring effects. However, the mechanism of TSG-6 action in the scar formation remains poorly understood. We investigated whether TSG-6 affects growth of the human hypertrophic scar fibroblasts (HSFs) via Fas/FasL signalling pathway. Cultured HSFs were transfected with a vector carrying the TSG6gene (pLVX-Puro-TSG-6) or with a vector not containing the TSG6 gene (pLVX-Puro). Untransfected HSFs served as a control group to both transfected HSFs. The expressions level of TSG-6 was up-regulated in the pLVX-Puro-TSG-6 group at the protein and mRNA level. MTT and flow cytometry were used to assess the effect of TSG-6 on the growth and apoptotic status of HSFs. Finally, qRT-PCR and western blot were used to measure the expression levels of Fas, FasL, FADD, caspase-3 and caspase-8 in each group. The apoptosis rate was significantly enhanced and the growth rate reduced in the HSFs transfected with the TSG6 gene vector. The expression levels of Fas, FasL, FADD, caspase-3 and caspase-8 were significantly raised in the TSG-6 overexpressing HSFs. It is concluded that increased expression of TSG-6 may induce apoptosis of human hypertrophic scar fibroblasts via activation of the Fas/FasL signalling pathway. and Corresponding author: Xiao-Jing Li
This paper presents a new robust adaptive model predictive control for a special class of continuous-time non-linear systems with uncertainty. These systems have bounded disturbances with unknown upper bound, as well as constraints on input states. An adaptive control is used in the new controller to estimate the system uncertainty. Also, to avoid the system disturbances, a H∞ method is employed to find the appropriate gain in Tube-MPC. Finally, a surge avoidance problem in centrifugal compressors is solved to show the efficiency and effectiveness of the proposed algorithm.
Cíl práce: V kazuistice prezentujeme raritní nález primárního plazmablastického lymfomu penisu, který klinicky imitoval karcinom glans penis. Jedná se o druhý publikovaný případ tohoto typu lymfomu penisu ve světě. Kazuistika: Pacient, narozen 1929, byl odeslán na naše pracoviště ošetřujícím urologem pro nově zjištěný exofytický tumor glans penis, indikovali jsme parciální amputaci penisu. Histologické vyšetření amputátu prokázalo primární plazmablastický lymfom. Následná restagingová vyšetření neprokázala systémové onemocnění, pacient je nyní 22 měsíců po výkonu bez známek onemocnění a zůstává v hematologické dispenzární péči. Závěr: Primární plazmablastický lymfom penisu představuje extrémně raritní diagnózu, ve světové literatuře je popsán pouze jediný případ. Jedná se o agresivní typ lymfomu, který obvykle vede v krátké době ke smrti pacienta. Ačkoli léčba těchto nádorů je převážně založena na chemoterapii, u našeho pacienta vedl radikální operační výkon k úplnému vyléčení., We report a case of an elderly man who has presented with tumorous affection involving the uncircumcised penile glans and prepuce. Primary clinical examination gave strong suspicion for primary carcinoma of penis, therefore a suprapubic cystostomy and partial amputation of penis were performed. Histopatological examination revealed uncommon diagnosis of plasmablastic lymphoma involving glans penis and prepuce. The vast majority of penile tumours are squamous cell carcinomas, primary malignant lymphoma of penis is extremely rare. As staging results were negative, no adjuvant systemic chemotherapy was neccesary. Hitological diagnosis of this pathological entity is challenging due to its rarity., Daniel Bulíř, Jan Jandejsek, Vojtěch Láska, Lukáš Wagenknecht, Jakub Musil, and Literatura
Transplantaci jater jako kurativní léčebnou metodu je možno použít u vybraných primárních tumorů jater, především u hepatocelulárního karcinomu a vzácnějších semimaligních tumorů, jako je epiteloidní hemangioendoteliom, dále u infiltrace jater metastázami neuroendokrinních tumorů (za předpokladu, že metastázy jsou lokalizovány pouze v játrech a primární tumor byl odstraněn) a u benigních tumorů (hemangiomů a adenomů) s útlakovými příznaky a velikostní progresí. Cholangiokarcinom není v CKTCH Brno k transplantaci jater indikován. V posledních letech dochází k nárůstu transplantací jater pro hepatocelulární karcinom a hepatocelulární karcinom se také častěji nachází až ex post v explantovaných játrech. Transplantace jater je indikována u vybraných pacientů, u nichž je dobrá šance na dlouhodobé přežití po transplantaci jater (přijímanou hranicí je 50% 5leté přežití po transplantaci). V CKTCH Brno bylo k 20. 3. 2015 transplantováno 38 pacientů – u 25 z nich byl hepatocelulární karcinom diagnostikován před transplantací a u 13 byl zjištěn z explantátu jater. 5leté přežití po transplantaci je u této kohorty pacientů 53 %. Chronickou hepatitidou C trpělo 32 % pacientů. Nejdéle (32 let) přežívající pacient v CKTCH Brno byl transplantován pro velký fibrolamelární hepatocelulární karcinom, což ukazuje na prognostický význam histologie tumoru – kritérium zohledňované z praktických důvodů pouze v některých indikačních schématech. Benigní tumory jater (adenomatóza, cystadenom, hemangiom s útlakovými příznaky) jsou spíše raritní indikace a výsledky transplantace jsou příznivé. Pro infiltraci jater karcinoidem byli transplantováni 4 pacienti, u 1 došlo k rekurenci tumoru., Liver transplantation as a curative treatment method can be used for selected primary liver tumours, in particular for hepatocellular carcinoma and rather rare semi-malignant tumours such as epithelioid hemangioendothelioma, further for infiltration of liver by metastatic neuroendocrine tumours (provided that metastases are only located in the liver and the primary tumour was removed) and for benign tumours (hemangiomas and adenomas) with oppression symptoms and size progression. Cholangiocarcinoma is not indicated for liver transplantation at the CKTCH Brno. In recent years liver transplants for hepatocellular carcinoma have increased and hepatocellular carcinoma has also been more frequently found ex post, in the explanted livers. Liver transplantation is indicated in selected patients with a good chance of long-term survival after liver transplantation (a generally accepted limit is 5year survival of 50 % after transplantation). By 20 March 2015 there were liver transplants carried out on 38 patients – in 25 of them was hepatocellular carcinoma diagnosed before transplantation and in 13 it was found in the liver explants. 5year survival following transplantation is reached by 53 % of this cohort. 32 % patients suffered from chronic hepatitis C. The longest surviving (32 years) patient at CKTCH Brno had liver transplanted for a big fibrolamellar hepatocellular carcinoma, which points to the prognostic significance of tumour histology: the criterion only considered in some indication schemes for practical reasons. Benign liver tumours (adenomatosis, cystadenoma, hemangioma with oppression symptoms) are rather rare indications and the transplantation results are favourable. 4 patients underwent transplantation for infiltration of liver by carcinoid, tumour recurrence occurred in one., and Vladimír Mejzlík, Libuše Husová, Milan Kuman, Soňa Štěpánková, Jiří Ondrášek, Petr Němec
Souborný referát shrnuje rysy nejčastějších nádorových postižení skeletu páteře na základních zobrazovacích metodách - skiagrafii, počítačové tomografii (CT) a magnetické rezonanci (MR). Předkládá základní diferenciálně diagnostickou rozvahu a rozebírá přínos jednotlivých typů vyšetření u jednotlivých postižení., This review article summarises radiological features of most common tumorous lesions of spine on X-ray, CT and MR imaging. The main differential diagnostic abnormalities are presented and the value of the individual imaging methods is noted., Marek Mechl, Andrea Šprláková-Puková, Miloš Keřkovský, and Literatura
Job Scheduling in Computational Grids is gaining importance due to the need for efficient large-scale Grid-enabled applications. Among different optimization techniques designed for the problem, Genetic Algorithm (GA) is a popular class of solution methods. As GAs are high level algorithms, specific algorithms can be designed by choosing the genetic operators as well as the evolutionary strategies such as Steady State GAs and Struggle GAs. In this paper we focus on Struggle GAs and their tuning for scheduling of independent jobs in computational grids. Our results showed that a careful hash implementation for computing the similarity of solutions was able to alleviate the computational burden of Struggle GA and perform better than standard similarity measures. This is particularly interesting for the scheduling problem in Grid systems, which due to changeability over time, has demanding time restrictions on the computation of planning the jobs to resources.