Effect of BO on the Structure, Properties and Antibacterial Abilities of Sol-Gel-Derived TiO/TeO/BO Powders.

This paper studies the influence of BO on the structure, properties and antibacterial abilities of sol-gel-derived TiO/TeO/BO powders. Titanium(IV) butoxide, telluric(VI) acid and boric acid were used as precursors. Differences were observed in the degree of decomposition of Ti butoxide in the presence of HBO and HTeO acids.

The Influence of Nd and Sm on the Structure and Properties of Sol-Gel-Derived TiO Powders.

TiO nanopowders modified by Nd and Sm were prepared using the sol-gel technique. It was found by XRD analysis that the samples containing Sm are amorphous up to 300 °C, while those with Nd preserve a mixed organic-inorganic amorphous structure at higher temperatures (400 °C). The TiO (rutile) was not detected up to 700 °C in the presence of both modified oxides.

Treatment of Childhood Acute Myeloid Leukemia in Bulgaria.

Background: During the last four decades the prognosis of childhood acute myeloid leukemia (AML) has been substantially improved due to an increase in complete remission (CR) rates, event-free survival (EFS) and reduced early mortality. The relapsed AML still remains a therapeutic challenge.

Aim: To report the AML treatment results of the Bulgarian pediatric oncohematological centers.

Central Nervous System Involvement in Henoch-Schonlein Purpura in Children and Adolescents.

Central nervous system (CNS) involvement in Henoch-Schonlein purpura (HSP) is rare but poses diagnostic difficulties. The aim of the study was to establish the frequency of CNS involvement in HSP, to analyze its clinical characteristics and do a literature review. Medical files of patients with HSP admitted at the Department of Pediatrics, Plovdiv, were studied retrospectively for a five-year period (2009-2013).

Immunophenotypic Modulation of the Blast Cells in Childhood Acute Lymphoblastic Leukemia Minimal Residual Disease Detection.

Unlabelled: Early clearance of leukemic cells during induction therapy of childhood acute lymphoblastic leukemia (ALL) is a basis for treatment optimization. Currently, the most widely used methods for the detection of minute residual malignant cells in the bone marrow and/or peripheral blood, minimal residual disease (MRD), are PCR and flow cytometry (FCM). Immunophenotypic modulation (IM) is a well known factor that can hamper the accurate FCM analysis.

Effect of Aronia melanocarpa fruit juice on amiodarone-induced pneumotoxicity in rats.

Background: The fruits of Aronia melanocarpa (Michx.) Elliot is extremely rich in biologically active polyphenols.

Objective: We studied the protective effect of A.

Protective effects of a superoxide dismutase/catalase mimetic compound against paraquat pneumotoxicity in rat lung.

Background And Objective: EUK-134 is one of the most promising of the superoxide dismutase (SOD)/catalase mimetic compounds. The antioxidant effects of EUK-134 were tested in a rat model of paraquat pneumotoxicity.

Methods: Male Wistar rats (n = 72) were divided into three groups: group 1, controls; group 2, paraquat alone; group 3, paraquat + EUK-134.

Childhood acute lymphoblastic leukemia presenting with osteoarticular syndrome--characteristics and prognosis.

Unlabelled: Children with leukemia often present with osteoarticular syndrome as a first complaint thus mimicking juvenile idiopathic arthritis. The objective of the present study was to determine the frequency of osteoarticular syndrome at the onset of acute lymphoblastic leukemia in childhood, the clinical and laboratory specificity of such patients and the prognostic value of osteoarticular syndrome as an initial symptom.

Patients And Methods: We studied 60 children with acute lymphoblastic leukemia at a mean age of 5 +/- 0.

Spectrophotometric determination of trace iron by using its catalytic effect on the N-phenylanthranilic acid-potassium periodate reaction.

The analytical features of the reaction between N-phenylanthranilic acid (PAA) and potassium periodate in acidic medium are explored with the aim of improving the catalytic kinetic determination of iron in water samples. In the presence of Fe(II, III), PAA is oxidized by potassium periodate in a formic acid medium to form a violet-colored compound. The reaction is followed spectrophotometrically by measuring the increase in the absorbance of the oxidation product at 525 nm.

Impact of thrombophilic genetic factors on pulmonary embolism: early onset and recurrent incidences.

The importance of genetic thrombophilic factors in the development of venous thromboembolism has been increasingly recognized. Factor V Leiden (FVL), prothrombin gene mutation G20210A (FII G20210), genetic variant C677T of the methylentetrahydrofolate reductase (MTHFR), as well as the polymorphism A2 (PlA2) in platelet glycoprotein IIb/IIIa were recently discussed. We analyzed the contribution of genetic thrombophilic factors to the pathogenesis of pulmonary embolism (PE) and their association with the early onset and recurrence of PE using DNA analysis methods.

Protective effect of U-74389G on paraquat induced pneumotoxicity in rats.

Paraquat is a very toxic herbicide and a dangerous pollutant of the environment. It forms reactive oxygen species and increases the lipid peroxidation in the pulmonary cells. Our aim in this study was to estimate the protective effects of the lazaroid U-74389G possessing antilipidperoxidation activity and membrane-stabilizing effect.

Pseudomembranous necrotizing tracheobronchitis caused by Aspergillus spp--contribution of one case with acute myeloid leukemia.

Acute tracheobronchitis is a rare clinical manifestation of respiratory tract invasive aspergillosis, sporadically reported in patients with hematological malignancies against the background of conventional chemotherapy. The authors report on a case of pseudomembranous necrotizing form of histologically proven tracheobronchitis, caused by Aspergillus spp in the time of induction chemotherapy in a patient with acute myeloid leukemia. The clinical evolution is gradual: from mild non-specific manifestations of acute tracheobronchitis against the background of a prolonged fever unaffected by antibiotic therapy to the onset of severe acute respiratory insufficiency and unilateral bronchial obstruction syndrome.