Nickel affects gill and muscle development in oriental fire-bellied toad (Bombina orientalis) embryos.

The developmental toxicity of nickel was examined in the embryos of Bombina orientalis, a common amphibian in Korea. Based on a standard frog embryo teratogenesis assay, the LC and EC for malformation of nickel after 168h of treatment were 33.8μM and 5.

Developmental and acute toxicity of cetylpyridinium chloride in Bombina orientalis (Amphibia: Anura).

In an effort to evaluate the toxicity of cetylpyridinium chloride (CPC), a cationic surfactant in amphibians, we examined the developmental and acute toxicity of CPC in Bombina orientalis embryos and tadpoles. Embryonic exposure to 2.0μM (0.

Oxidation behavior of P3HT layers on bare and TiO2-covered ZnO ripple structures evaluated by photoelectron spectroscopy.

P3HT layers with a thickness of ∼5 nm were deposited on bare and TiO2-covered ZnO ripple structures. The ZnO ripples were prepared wet-chemically and a TiO2 layer with a thickness less than 5 nm was prepared by atomic layer deposition. Under humid air and visible light illumination, the oxidation behaviors of P3HT on these surfaces were studied using photoelectron spectroscopy.

Hydrophobic polydimethylsiloxane (PDMS) coating of mesoporous silica and its use as a preconcentrating agent of gas analytes.

Mesoporous silica with mean pore size of ∼14 nm was coated by polydimethylsiloxane (PDMS) using a thermal deposition method. We showed that the inner walls of pores larger than ∼8 nm can be coated by thin layers of PDMS, and the surfaces consisting of PDMS-coated silica were superhydrophobic, with water contact angles close to 170°. We used the PDMS-coated silica as adsorbents of various gas-phase chemical warfare agent (CWA) simulants.

The influence of a fibrous carbon envelope on the formation of CoFe nanoparticles for durable electrocatalytic oxygen evolution.

Co oxides are known to be active and stable alternative anode electrocatalysts possessing the potential to replace the best performing but most expensive Ir and Ru oxides in alkaline water electrolysis. Of late, Co oxides loaded on various carbon supports have been reported as a way to outperform Ir or Ru catalysts by improving the utilization efficiency. In this study, we introduce Co and Fe nanoparticles embedded carbon nanofibers (CoFe-CNFs), fabricated through electrospinning and pyrolysis of a polymer mixed with Co and Fe precursors.

Deficiency of C-C chemokine receptor 5 suppresses tumor development via inactivation of NF-κB and inhibition of monocyte chemoattractant protein-1 in urethane-induced lung tumor model.

To evaluate the significance of C-C chemokine receptor type 5 (CCR5) in lung tumor development, we compared carcinogen-induced tumor growth in CCR5 knockout (CCR5(-/-)) mice and wild-type (CCR5(+/+)) mice. CCR5(-/-) mice showed reduced urethane (1g/kg)-induced tumor incidence when compared with those of CCR5(+/+) mice. We investigated the activation of nuclear factor-kappaB/STAT3 since these are implicated transcription factors in the regulation of genes involving tumor growth.

The usefulness of colonoscopy as a screening test for detecting colorectal polyps.

Background/aims: Colonic polyps are the most common lesions encountered during screening colonoscopy. The purpose of this study is to evaluate the usefulness of colonoscopy to detect colonic polyps in adults.

Methodology: From January 2003 to September 2005, a total of 4,629 adults underwent colonoscopic screening as a part of a health evaluation program.

Catalposide protects Neuro 2A cells from hydrogen peroxide-induced cytotoxicity via the expression of heme oxygenase-1.

Catalposide, the major iridoid glycoside isolated from the stem bark of Catalpa ovata G. Don (Bignoniaceae) has been shown to possess anti-microbial, anti-tumoral, and anti-inflammatory properties. Heme oxygenase-1 (HO-1) is a stress response protein and is known to play a protective role against the oxidative injury.

A Case of Extraskeletal Ewing's Sarcoma Arising from Duodenum.

Extraskeletal Ewing's sarcomas (EES) are rare. Recently, Ewing's sarcoma of the bone, primitive neuroectodermal tumor (PNET), Askin tumor and EES have been included into the family of Ewing's tumors, due to the overlapping features relating to their clinico-pathological and cytogenetic appearance. We experienced a case of an EES arising from the duodenum in a 14-year-old girl who presented with hematemesis and epigastric discomfort.

The Effect of Intensified Induction Using Vanderbilt Regimen in Patients with an Intermediate Grade Non-Hodgkin's Lymphoma Having 2 or 3 Adverse Factors on the Age-adjusted International Prognostic Index.

Purpose: The purpose of our study was to evaluate the outcome of intensified induction therapy using the Vanderbilt regimen in patients with a poor prognosis non-Hodgkin's lymphoma (NHL).

Materials And Methods: We retrospectively analyzed the results of two pilot studies, which enrolled the patients aged 60 years or less, with a previously untreated NHL of intermediate grade on the Working formulation, having 2 or 3 adverse prognostic factors on the age- adjusted International Prognostic Index. Patients received an intensified induction, with the regimen described by the Vanderbilt group.