The ability of aqueous biphasic systems (ABS) composed of polyethylene glycols of different molecular weights (PEG 400, 600 and 1000) and buffered aqueous solutions of potassium citrate/citric acid (pH = 5.0 - 8.0) to selectively extract ovalbumin from egg white was here investigated. Phase diagrams, tie-lines and tie-line lengths were determined at 25ºC and the partitioning of ovalbumin in the...

We have analyzed the secondary structure in the region surrounding the initiation codons of both cellular and synthetic versions of ovalbumin mRNA. RNase V1 cleavage sites and structure-dependent, chemically modified bases in cellular ovalbumin mRNA were determined by reverse transcription of hen poly A(+) RNA using ovalbumin-specific, synthetic DNA primers. These results indicate an extensive ...

The reversible airway hyper-reactivity (AHR) of asthma is modeled by sensitizing and challenging mice with aerosolized ovalbumin. However, the C57BL/6 murine strain does not display the large increase in circulating IgG and IgE antibodies found in human atopy and asthma. We found that commercial ovalbumin was contaminated with lipopolysaccharide (LPS) in amounts sufficient to fully activate end...

Son yıllarda, dünya çapında gıda alerjisi en önemli sorunlardan biridir. Ovalbumin yumurta akında bulunan ana alerjanlardan Bu çalışmada, ovalbumin baskılanmamış ve baskılanmış poli (hidroksietil metakrilat-metakrilik asit) poli(HEMA-MAA) kriyojeller moleküler baskılama yöntemi kullanılarak sentezlenmiştir. kriyojellerin karakterizasyonundan sonra, akış hızı, pH etkisi, başlangıçtaki konsantras...

We previously observed that gut colonization by Candida albicans promoted serum antibody response to orally administered ovalbumin in mice. We therefore postulated that C. albicans affects oral tolerance induction. The present study tested this idea. BALB/c mice were intragastrically administered with either C. albicans (1 × 10(7)) or vehicle, and the colonization was confirmed by weekly fecal ...

In Escherichia coli cells carrying wild-type ovalbumin cDNA, some of the recombinant protein was secreted into the periplasmic space. In contrast, a signal-region mutant form of ovalbumin (deletion, Gly1 to Ala39) was not detected in the periplasm despite being synthesized at the same level as the wild-type protein. Chemical and spectroscopic analyses showed that periplasmic ovalbumin assumes a...

BACKGROUND AND PURPOSE Asthma exacerbations contribute to corticosteroid insensitivity. LPS is ubiquitous in the environment. It causes bronchoconstriction and airway inflammation and may therefore exacerbate allergen responses. This study examined whether LPS and ovalbumin co-administration could exacerbate the airway inflammatory and functional responses to ovalbumin in conscious guinea pigs ...

Experiments using different types of antigen-adjuvant preparations were conducted in outbred sheep to compare effects of adjuvants on immune responses. Trinitrophenyl-ovalbumin (TNP-ovalbumin) incorporated in a preparation with nonionic block copolymers elicited high antibody titers to both ovalbumin and TNP. Different humoral immune responses were observed when Pasteurella haemolytica lipopoly...

By recombinant DNA methods, the chicken ovalbumin structural gene has been fused to Escherichia coli lac transcriptional and translational control regions. When a plasmid containing the hybrid gene was introduced into E. coli, a protein identified as ovalbumin by immunoreactivity and sodium dodecyl sulfate/polyacrylamide gel electrophoresis was synthesized. The chicken ovalbumin made in bacteri...