Brillouin study of photopolymerization process of two-monomer systems.

The results of Brillouin scattering investigations of two-component system: 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane/polyethylene glycol methacrylate (bis-GMA/PEGMM) containing 0, 30, 50, 70, 85 and 100 mol% of PEGMM are presented. For the first time the Brillouin spectroscopy was used to monitor the progress of the polymerization process. The polymerization was initiated by ultraviolet radiation (λ=365 nm), at temperature 20°C and 40°C.

Is it about the self or the significance? An fMRI study of self-name recognition.

Our own name, due to its high social relevance, is supposed to have a unique status in our information processing. However, demonstrating this phenomenon empirically proves difficult as famous and unknown names, to which self-name is often compared in the studies, may differ from self-name not only in terms of the 'me vs. not-me' distinction, but also as regards their emotional content and frequency of occurrence in everyday life.

Substantial difference between temperature dependencies of dsDNA predenaturation process obtained by voltammetry and spectroscopy.

The electrooxidation of double stranded DNA has been studied in a wide temperature range by cyclic and square wave voltammetries and the results were compared with UV-Vis and CD spectroscopies. A twofold increase of dsDNA voltammetric peaks related to the conformation changes preceding the denaturation process was found to begin at a temperature lower than the well known increase of dsDNA absorbance upon denaturation (the melting point) by circa 20 degrees C. Since the dsDNA voltammetric peaks are related directly to the electrooxidation of guanine and adenine, early conformational changes in guanine-cytosine (G-C) and adenine-thymine (A-T) pairs in dsDNA are possible reasons for the increase of the voltammetric peaks.

Allocation of attention to self-name and self-face: An ERP study.

Self-related information, due to its high social/adaptive value, seems to have a preferential access to our attentional resources (cf. the cocktail party effect). However, it remains uncertain whether this attention preference is the same for different kinds of self-related cues.

Nanogravimetric and voltammetric DNA-hybridization biosensors for studies of DNA damage by common toxicants and pollutants.

Electrochemical and nanogravimetric DNA-hybridization biosensors have been developed for sensing single mismatches in the probe-target ssDNA sequences. The voltammetric transduction was achieved by coupling ferrocene moiety to streptavidin linked to biotinylated tDNA. The mass-related frequency transduction was implemented by immobilizing the sensory pDNA on a gold-coated quartz crystal piezoresonators oscillating in the 10MHz band.

Influence of a magnetic nanoparticle as a drug carrier on the activity of anticancer drugs: interactions of double stranded DNA and doxorubicin modified with a carrier.

Magnetic drug targeting executed by nanoparticles as carriers is a promising cancer treatment which avoids the side effects of conventional chemotherapy. We have modified doxorubicin with magnetic nanoparticles. Doxorubicin (adriamycin) is a potential anticancer drug yet nonspecific in its antibiotic action.

Acute pulmonary embolism registry in the Małopolska region - clinical course.

Background: Acute pulmonary embolism (APE) is a life-threatening disease. Mortality in APE still remains very high in spite of progress in diagnostic tools. Mortality rate is about 30% in patients with unrecognised APE.

Successfully overcoming the inhibitory impact of the "forget" instruction: a voxel-based morphometric study of directed forgetting.

In directed-forgetting studies, test items are followed by an instruction either to "remember" or to "forget" (F). Many to-be-forgotten (TBF) stimuli are not retrieved at the recognition phase. However, some subjects are able to correctly recollect a high number of TBF stimuli.

Grey-matter differences related to true and false recognition of emotionally charged stimuli - a voxel based morphometry study.

The issue concerning the neuronal basis of true and false recognition is still a subject of extensive debate. In the present study voxel based morphometry (VBM) was used to examine structural brain correlates of these processes. Since several studies indicate that emotional content facilitates false recognition we decided to use emotional stimuli.

Influence of pleural macrophages on proliferative activity and apoptosis regulating proteins of malignant cells.

Malignant tumors contain numerous macrophages as a major component of the leukocytic infiltrate. Only few studies have evaluated the interaction between products secreted by macrophages and tumor cells. Our objective was to study soluble factors produced by pleural macrophages.

Concentration of matrix metalloproteinase-9 in serum of patients with chronic obstructive pulmonary disease and a degree of airway obstruction and disease progression.

Chronic obstructive pulmonary disease (COPD) is chronic inflammation leading to irreversible airway obstruction. Previous studies showed increased metalloproteinases (MMP) level, especially MMP-9, as a sign of local inflammation. Up-to-date, only a few studies estimated the MMP-9 serum concentration in COPD with respect to correlation with systemic inflammation.

[Heparin-induced thrombocythopenia in a patient with massive pulmonary embolism and dilated cardiomyopathy, successfuly treated with fondaparinux - a case report].

Heparin-induced thrombocythopenia (HIT) is a potentially serious complication of heparin treatment, rarely observed in cardiological wards. We present a case of a 38-year-old woman with dilated cardiomyopathy and massive pulmonary embolism treated with alteplase and unfractionated heparin. On 12th day an unexpected fall in platelet count was observed, without new signs of thrombosis.

[Dentinal hypersensivity after vertical stripping of enamel].

Introduction: Vertical stripping of enamel in patients with minor or moderate crowding of teeth and Angle's class I is an effective method which supplements orthodontic treatment. Stripping is an alternative to tooth extraction or to extension of alveolar arches which carries the risk of recurrence of crowding and further periodontal difficulties. Stripping also shortens considerably the duration of treatment.

[Response of dental pulp to self-etching adhesive systems used in indirect capping. A literature review].

Objective: To review the literature on dental pulp responses to self-etching adhesive systems used in indirect capping.

Material And Methods: Many studies in vitro and in vivo focused on biocompatibility of the self-etching adhesive system used in deep defects. Clinical and radiographic findings from animal and human studies are compared and discussed.

[Usefulness of Tco99m-IBI myocardial perfusion SPECT in coronary artery disease diagnosis in women].

Unlabelled: Coronary artery disease (CAD) in women remains a difficult diagnostic problem. The usefulness of exercise electrocardiography (EXT) in these patients is limited. The value of other noninvasive tests including Tc99m-MIBI single photon emission computed tomography (SPECT), is still to be determined.

Heart rate turbulence in patients with obstructive sleep apnea syndrome.

Background: Heart rate turbulence (HRT) assessment is used as noninvasive method based on physiological sinus node response to the premature ventricular beat. Blunted HRT may indicate the autonomic nervous system impairment and can be helpful in identifying high-risk patients. Obstructive sleep apnea syndrome (OSAS) leads to cardiovascular complications.

Thermoresponsive polymeric gel as a medium for examining interactions between dsDNA and an anticancer drug.

A piece of dry N-isopropylacrylamide polymer was soaked in phosphate buffer to obtain a hydrogel which was then employed in the examination of interactions between an anticancer drug C-1311 (5-diethylaminoethyl-amino-8-hydroxyimidazoacridinone) and dsDNA. dsDNA was introduced into the polymer at the polymerization stage. The drug was added to the buffer.

Reversed old/new effect for intentionally forgotten words: an ERP study of directed forgetting.

The present study investigated, using the item-method directed forgetting paradigm, whether successful intentional forgetting is reflected in brain activity, as measured by ERP. We sorted the EEG data into 4 experimental conditions based on the combination of memory instruction and behavioral outcome: TBF_F (to-be-forgotten and forgotten), TBF_R (to-be-forgotten but remembered), TBR_R (to-be-remembered and remembered, i.e.

Electrospinning of bovine serum albumin. Optimization and the use for production of biosensors.

Electrospinning of the globular protein, bovine serum albumin (BSA), was optimized to obtain proteinous fibers suitable as biosensors. It was shown that the as-spun protein preserves its native form, whereas solubility of the cross-linked in the ambient conditions BSA nanofibers evidently decreases. Insoluble BSA fibers can be easily modified to be used as two-dimensional biosensors.

False recognition of emotional stimuli is lateralised in the brain: An fMRI study.

We have investigated whether the left (LH) and right (RH) hemisphere play a different role in eliciting false recognition (FR) and whether their involvement in this memory illusion depends on the emotional content of stimuli. Negative and neutral pictures (taken from IAPS) were presented in the divided-visual field paradigm. Subjects task was to indicate whether the pictures had already been presented or not during the preceding study phase.