Exploring the relationship between ventricular fibrillation recurrence after defibrillation in myocardial infarction and the effectiveness of renal sympathetic denervation therapy.

Objective: This study aimed to explore the association between electrophysiological markers of early recurrence after defibrillation in post-myocardial infarction ventricular fibrillation and the therapeutic effects of sympathetic renal denervation, as well as to investigate the potential underlying mechanisms.

Methods: Experimental research was conducted using an animal model. Myocardial infarction was induced, followed by defibrillation treatment for ventricular fibrillation cases, and the electrophysiological markers of early recurrence were recorded.

Effect of Renal Sympathetic Denervation on Ventricular Electrical Activity in Myocardial Infarction.

Coronary artery blockage causes myocardial infarction (MI), a frequent and serious cardiovascular disease. The early recurrence of post-MI ventricular fibrillation after defibrillation has been widely investigated and treated. This research investigated the relationship between electrophysiological indicators of early recurrence following defibrillation in post-MI ventricular fibrillation and sympathetic renal denervation's therapeutic benefits and probable causes.

Large transparent display based on liquid crystal technology.

A large transparent liquid crystal display (LCD) prototype with ultrahigh transmittance and good see-through property is demonstrated in this paper. The transmittance reaches more than 20% by introducing the RGBW pixel arrangement, a thin color filter process, a large aperture ratio design, as well as antireflective polarizer film. The see-through image quality is also greatly improved by suppressing the blurring by using domain reduction pixel design.

High-performance switchable grating based on pre-transitional effect of antiferroelectric liquid crystals.

An optical phase grating prototype based on the homeotropic aligned antiferroelectric liquid crystal (AFLC) is demonstrated. By applying an in-plane electric field using comb-like electrodes, the helical structure of AFLC is deformed with the molecules rotating parallel to the electric field because of dielectric anisotropy. This deformation is called the pre-transitional effect of AFLC and induces biaxiality.

Definite existence of subphases with eight- and ten-layer unit cells as studied by complementary methods, electric-field-induced birefringence and microbeam resonant x-ray scattering.

A mixture of two selenium-containing compounds, 80 wt. % AS657 and 20 wt. % AS620, are studied with two complementary methods, electric-field-induced birefringence (EFIB) and microbeam resonant x-ray scattering (μRXS).

Phase modulator mode based on the pre-transitional effect of antiferroelectric liquid crystals.

We demonstrate a novel phase-only modulation mode based on the pre-transitional effect of the antiferroelectric liquid crystal. 2π phase modulation without changing the polarization state of the incident light is achieved with a low field (1.8 V/μm).

Generation and screening of a comprehensive Mycobacterium avium subsp. paratuberculosis transposon mutant bank.

Mycobacterium avium subsp. paratuberculosis (MAP) is the etiologic agent of Johne's Disease in ruminants. This enteritis has significant economic impact and worldwide distribution.

Impairment of D-alanine biosynthesis in Mycobacterium smegmatis determines decreased intracellular survival in human macrophages.

d-Alanine is a structural component of mycobacterial peptidoglycan. The primary route of d-alanine biosynthesis in eubacteria is the enantiomeric conversion from l-alanine, a reaction catalysed by d-alanine racemase (Alr). Mycobacterium smegmatis alr insertion mutants are not dependent on d-alanine for growth and display a metabolic pattern consistent with an alternative pathway for d-alanine biosynthesis.

Genetics and virulence association of the Shigella flexneri sit iron transport system.

The sit-encoded iron transport system is present within pathogenicity islands in all Shigella spp. and some pathogenic Escherichia coli strains. The islands contain numerous insertion elements and sequences with homology to bacteriophage genes.

Plasmid transformation and expression of the firefly luciferase in Microbacterium testaceum type and endophytic colonizing field strains.

Microbacterium testaceum is a predominant endophytic bacterial species isolated from corn and sorghum in the midwestern United States. The development of genetic transfer systems for M. testaceum may enable its use for biocontrol and other applications.

[The mistakes of E. Dinc's double divisor-ratio spectra derivative method].

Double divisor-ratio spectra derivative method has been developed and applied to determining two ternary mixtures simultaneously by E. Dinc. In fact, E.

Roles of Mycobacterium smegmatis D-alanine:D-alanine ligase and D-alanine racemase in the mechanisms of action of and resistance to the peptidoglycan inhibitor D-cycloserine.

D-Cycloserine (DCS) targets the peptidoglycan biosynthetic enzymes D-alanine racemase (Alr) and D-alanine:D-alanine ligase (Ddl). Previously, we demonstrated that the overproduction of Alr in Mycobacterium smegmatis determines a DCS resistance phenotype. In this study, we investigated the roles of both Alr and Ddl in the mechanisms of action of and resistance to DCS in M.

Mycobacterium smegmatis L-alanine dehydrogenase (Ald) is required for proficient utilization of alanine as a sole nitrogen source and sustained anaerobic growth.

NAD(H)-dependent L-alanine dehydrogenase (EC 1.4.1.

Molecular cloning, sequencing, and characterization of bovine transporter associated with antigen processing 2 ( BoTAP2).

The transporter associated with antigen processing (TAP) 1/2 heterodimer is essential for the transport of antigenic peptides from the cytosol into the lumen of the endoplasmic reticulum. Bovine herpesvirus 1 (BHV-1) inhibits bovine TAP (BoTAP) activity, as a means of down-regulating MHC class I expression on the cell surface, and hence evasion of the cytotoxic T-lymphocyte response of the host. Identification of BHV-1 protein(s) responsible for TAP inhibition, and elucidation of the mechanism of TAP inhibition necessitate cloning and high-level expression of BoTAP1 and 2.

Isolation and characterization of endophytic colonizing bacteria from agronomic crops and prairie plants.

Endophytic bacteria reside within plant hosts without causing disease symptoms. In this study, 853 endophytic strains were isolated from aerial tissues of four agronomic crop species and 27 prairie plant species. We determined several phenotypic properties and found approximately equal numbers of gram-negative and gram-positive isolates.

Mycobacterium smegmatis D-Alanine Racemase Mutants Are Not Dependent on D-Alanine for Growth.

Mycobacterium smegmatis is a fast-growing nonpathogenic species particularly useful in studying basic cellular processes of relevance to pathogenic mycobacteria. This study focused on the D-alanine racemase gene (alrA), which is involved in the synthesis of D-alanine, a basic component of peptidoglycan that forms the backbone of the cell wall. M.