Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 49 for “"biogenic amines"”.
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INFLUENCE OF BIOGENIC AMINES ON BOVINE LUTEAL STEROIDOGENESIS
<p>To investigate the role of catecholamines and biogenic amines in the control of bovine luteal steroidogenesis, studies were conducted utilizing collagenase-dispersed luteal cells in a short-term incubation system. Studies designed to assess the role of catecholamines showed that the stimulatory …
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Analysis of Biogenic Amines by GC/FID and GC/MS
Low levels of biogenic amines occur naturally, but high levels (FDA sets 50 ppm of histamine in fish as the maximum allowable level) can lead to scombroid poisoning. Amines in general are difficult to analyze by Gas Chromatography (GC) due to their lack of volatility and their interaction with the …
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Biogenic Amines and Division of Labor in the Honey Bee Society
Brain levels of biogenic amines, dopamine, serotonin, and octopamine, were measured in relation to both age-related division of labor and differences in task specialization, independent of age, in honey bee colonies. There were distinct differences associated with age-related division of labor. …
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The role of intensity, temporal synchrony, and biogenic amines for unimodal and multimodal integration during learning and memory of honey bees and bumble bees
… multisensory processing, and the role of biogenic amines in learning and memory tasks of honey bees and bumble bees. The three chapters provide valuable insights into these interconnected concepts and on the mechanisms underlying bee’s behaviour. The first chapter focuses on the dependency …
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Food safety in wine: optimization of analytical controls and evaluation of production technologies
… with harmful impact on human health, such as biogenic amines and ochratoxin A in wines. Therefore, the influence of production technology (pH, amino acids precursor and use of different malolactic starters) on biogenic amines content in wines was evaluated. An HPLC method for simultaneous …
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A study of the effects of oxypertine on monoaminergic pathways in rat brain using a new HPLC/ECD method.
A new HPLC/ECD system for the measurement of the biogenic amines and their major metabolites has been developed. It comprises of a two column system, one for the analysis of the biogenic amines and one for the metabolites. The preparation of brain samples for analysis has been made as simple as …
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Protein Synthesis Inhibitors Impair Memory by Disrupting Release of Neurotransmitters Important for Memory Modulation
… impair memory by altering release of the biogenic amines, neurotransmitters important for modulating the strength of memory. We tested this hypothesis using two protein synthesis inhibitors, anisomycin, a non-selective protein synthesis inhibitor, and CREB antisense, which impairs …
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Using non-targeted mass spectrometry to identify proteomic, metabolomic and lipidomic profiles in saliva to compare the impact of prolonged vs. interrupted sitting
… A total of 2493 proteins, 17 lipids, and 11 biogenic amines were detected. 2112 proteins were significantly differentially abundant among the different session sample groups. In conclusion, prolonged sedentary behaviour of 4 hours led to a range of molecular responses that were observed …
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Discovery and bioactivity assessment of a peptide, QUB-1976, from the skin secretion of the Senegal running frog, (Kassina senegalensis)
… amphibians contain four main types of compounds: biogenic amines, bufadienolides, indole alkaloids, peptides, and proteins. Among these four types, peptides and proteins are the most studied. All these peptides and proteins have been divided into different types according to their bioactivity. …
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Biogenic Amine Levels Correlate with Time of Day, Age, Light Cycle, and Aggressive State in the Flesh Fly, Sarcophaga crassipalpis
<p>The biogenic amines serotonin (5HT), dopamine (DA), and octopamine (OA) have been indicated in the regulation of behaviors, including aggression. The flesh fly, <em>Sarcophaga crassipalpis</em>, was used to investigate ontogenetic and circadian changes in amines and aggression. Heads of male …
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A bioactive peptide QUB3009 from the defensive skin secretion of the frog, Phyllomedusa tomopterna
… contain bioactive components which include biogenic amines, alkaloids, peptides and proteins. Antimicrobial peptides from frog skin secretions display vital broad-spectrum antimicrobial activity and have been promoted for the research of novel chemical drugs.<br/><br/>In this thesis, an …
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Studio della formazione di ammine biogene e di altri composti azotati negli alimenti
… qualitative and quantitative determination of biogenic amines (BA) and amino acids (AA), in particular the essential AA, in different food matrices typical of Sardinia (Italy). The study was focused on wines and table olives, which are potential source of biogenic amines due to their …
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Analysis of a novel antimicrobial peptide QUB-1746 from the skin secretion of the frog, Kassina senegalensis
… contain abundant bioactive compounds, such as biogenic amines, steroids, alkaloids, peptides and proteins. In this thesis, the full-length cDNA sequence of a novel antimicrobial peptide, named QUB-1746, was cloned from a Kassina senegalensis skin secretion derived cDNA library through ‘shotgun’ …
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A novel bioactive peptide from the skin secretion of the Large Chinese Odorous frog, Rana (Odorrana) livida
… contain many bioactive compounds, for example: biogenic amines, alkaloids and steroids, peptides and proteins all of which would have potential medical applications.<br/>In this study, a cDNA encoding novel peptide was discovered from the skin secretion of the Large Chinese Odorous frog, Rana …
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Instrument development for the analysis of low abundance analytes in single cells and small volume samples
… identifying normal and pathological functioning. Biogenic amines, which include catecholamines and indolamines, are of particular interest due to their presence throughout the central and peripheral nervous systems in many species, as well as their association with a wide variety of higher order …
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QUB-3005, a bioactive peptide from the defensive skin secretion of Rana amurensis
… exist in amphibian skin secretions, such as biogenic amines, steroids, complex alkaloids, and peptides. In the latter class of molecules, a large number of peptide antibiotics has been isolated and characterised from different amphibian species. Particularly, antimicrobial peptides (AMPs) are …
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Identification of microbial diversity associated with post-harvest storage of rice in India
… produce volatile organic compounds and biogenic amines which enhance spoilage of food grains. Aspergillus and Fusarium, on the other hand, are mycotoxigenic fungi known to produce toxins that are carcinogenic to humans. In conclusion, the microbes identified are suggestive of …
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Calorimetric studies of small-molecule adsorption to carbon nanotubes
… SWCNT adsorbent and receptor for sensing biogenic amines. Though the cooperative binding effect of the pendant pyrene moietites effectively tethers the cavitand receptor to CNTs, primary ammonium salts do not bind to the cavitand more strongly than to the SWCNT surface. Highly selective …
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A peptide, QUB-1420, from the defensive skin secretion of Heilongjiang Brown Frog Rana amurensis
… skin secretions have been identified, such as biogenic amines, steroids, alkaloids and peptides and protein, many of which were proved to have different bio-activities. Therefore, frog secretions are regarded as a rich source to continuously provide valuable leads for novel drug development. …
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C. elegans integrates food, stress, and hunger signals to coordinate motor activity
… detects bacteria, and explored the roles of biogenic amines, metabolic, and stress signaling pathways on this behavior. We correlated specific sensory defects and the expression patterns of genes involved in sensory function, gathered by the community of C. elegans researchers, with abnormal …
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