نتایج جستجو برای: tna
تعداد نتایج: 313 فیلتر نتایج به سال:
Upon tryptophan induction of tna operon expression in Escherichia coli, the leader peptidyl-tRNA, TnaC-tRNA(2)(Pro), resists cleavage, resulting in ribosome stalling at the tnaC stop codon. This stalled ribosome blocks Rho factor binding and action, preventing transcription termination in the tna operon's leader region. Plasmid-mediated overexpression of tnaC was previously shown to inhibit cel...
Diabetes increases the reabsorption of Na(+) (TNa) and glucose via the sodium-glucose cotransporter SGLT2 in the early proximal tubule (S1-S2 segments) of the renal cortex. SGLT2 inhibitors enhance glucose excretion and lower hyperglycemia in diabetes. We aimed to investigate how diabetes and SGLT2 inhibition affect TNa and sodium transport-dependent oxygen consumption [Formula: see text] along...
STUDY OBJECTIVE This study was designed to evaluate the usefulness of polymerase chain reaction (PCR) to detect Mycoplasma pneumoniae DNA in samples obtained by transthoracic needle aspiration (TNA). DESIGN Prospective study of cases. SETTING A university hospital in Lleida, Spain. PATIENTS A total of 101 unselected patients, admitted between January 1993 and March 1994 in the emergency d...
BACKGROUND A quality-control study was undertaken by the departments of pharmacy and microbiology at St. Paul's Hospital (Vancouver, British Columbia, Canada) to evaluate the microbiologic safety of total nutrition admixtures (TNA) compounded by automated compounding pumps when the use of disposable transfer sets was extended from 1 day to 2 days. This study also evaluates the potential annual ...
Cutaneous anthrax outbreaks occurred in Bangladesh from August to October 2009. As part of the epidemiological response and to confirm anthrax diagnoses, serum samples were collected from suspected case patients with observed cutaneous lesions. Anthrax lethal factor (LF), anti-protective antigen (anti-PA) immunoglobulin G (IgG), and anthrax lethal toxin neutralization activity (TNA) levels were...
Pittard, James (Yale University, New Haven, Conn.). Effect of integrated sex factor on the transduction of chromosomal genes in Escherichia coli. J. Bacteriol. 89:680-686. 1965.-Generalized transducing phage P1kc can contransduce the markers tna and ilv in Escherichia coli K-12 at a frequency of approximately 25%. When sex factor is integrated into the donor chromosome between tna and ilv, as i...
[1] We document a strong teleconnection between Central Equatorial African (CEA) rainfall (and Congo River discharge) and the large-scale circulation over the North Atlantic, throughout the boreal winter/spring season. Positive rainfall anomalies over CEA (at interannual and multiannual timescales) are related to anomalous westerly midtropospheric zonal winds over the CEA/Atlantic region. These...
INTRODUCTION Patients with idiopathic normal pressure hydrocephalus (INPH) frequently have a reduction in cerebral blood flow in the subcortical frontal lobe/basal ganglia/thalamic areas. With magnetic resonance spectroscopy, the metabolism in the brain can be examined. The aim of this study was to investigate if there was a compromised metabolism in the thalamus and in the subcortical frontal ...
The tryptophanase (tna) operon of Proteus vulgaris was cloned and characterized and found to be organized similarly to the tna operon of Escherichia coli. Both operons contain two major structural genes, tnaA and tnaB, that encode tryptophanase and a tryptophan permease, respectively. tnaA of P. vulgaris is preceded by a transcribed leader region, encoding a 34-residue leader peptide, TnaC, tha...
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