High concentrations of D-amino acids in human gastric juice
The concentrations of free D- and L-amino acids were determined in the gastric juice from four groups: patients suffering from early gastric carcinoma with or without Helicobacter pylori infection, and patients without carcinoma but with peptic ulcers, duodenal ulcers or chronic gastritis with or wi...
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          | Published in | Amino acids Vol. 32; no. 1; pp. 137 - 140 | 
|---|---|
| Main Authors | , , , , , | 
| Format | Journal Article | 
| Language | English | 
| Published | 
        Austria
          Vienna : Springer-Verlag
    
        01.01.2007
     Springer Nature B.V  | 
| Subjects | |
| Online Access | Get full text | 
| ISSN | 0939-4451 1438-2199  | 
| DOI | 10.1007/s00726-006-0262-9 | 
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| Abstract | The concentrations of free D- and L-amino acids were determined in the gastric juice from four groups: patients suffering from early gastric carcinoma with or without Helicobacter pylori infection, and patients without carcinoma but with peptic ulcers, duodenal ulcers or chronic gastritis with or without H. pylori infection. H. pylori is a bacterium associated with gastric inflammation and peptic ulcers and is a risk factor for stomach cancer. The highest D-amino acid ratios (free D-amino acid concentration to the total corresponding free D- and L-amino acid concentration) were 29%, 26%, 18%, 4% and 1% for proline, alanine, serine, aspartate and glutamate, respectively. The gastric juice levels of L-alanine, L-serine, L-proline, L-glutamate and D-alanine in the samples obtained from subjects bearing early gastric carcinoma and H. pylori were significantly higher than in the samples from the other three groups. Except for D-alanine, there was no correlation between the D-amino acid concentrations and presence of carcinoma or H. pylori. | 
    
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| AbstractList | The concentrations of free D- and L-amino acids were determined in the gastric juice from four groups: patients suffering from early gastric carcinoma with or without Helicobacter pylori infection, and patients without carcinoma but with peptic ulcers, duodenal ulcers or chronic gastritis with or without H. pylori infection. H. pylori is a bacterium associated with gastric inflammation and peptic ulcers and is a risk factor for stomach cancer. The highest D-amino acid ratios (free D-amino acid concentration to the total corresponding free D- and L-amino acid concentration) were 29%, 26%, 18%, 4% and 1% for proline, alanine, serine, aspartate and glutamate, respectively. The gastric juice levels of L-alanine, L-serine, L-proline, L-glutamate and D-alanine in the samples obtained from subjects bearing early gastric carcinoma and H. pylori were significantly higher than in the samples from the other three groups. Except for D-alanine, there was no correlation between the D-amino acid concentrations and presence of carcinoma or H. pylori.The concentrations of free D- and L-amino acids were determined in the gastric juice from four groups: patients suffering from early gastric carcinoma with or without Helicobacter pylori infection, and patients without carcinoma but with peptic ulcers, duodenal ulcers or chronic gastritis with or without H. pylori infection. H. pylori is a bacterium associated with gastric inflammation and peptic ulcers and is a risk factor for stomach cancer. The highest D-amino acid ratios (free D-amino acid concentration to the total corresponding free D- and L-amino acid concentration) were 29%, 26%, 18%, 4% and 1% for proline, alanine, serine, aspartate and glutamate, respectively. The gastric juice levels of L-alanine, L-serine, L-proline, L-glutamate and D-alanine in the samples obtained from subjects bearing early gastric carcinoma and H. pylori were significantly higher than in the samples from the other three groups. Except for D-alanine, there was no correlation between the D-amino acid concentrations and presence of carcinoma or H. pylori. The concentrations of free D- and L-amino acids were determined in the gastric juice from four groups: patients suffering from early gastric carcinoma with or without Helicobacter pylori infection, and patients without carcinoma but with peptic ulcers, duodenal ulcers or chronic gastritis with or without H. pylori infection. H. pylori is a bacterium associated with gastric inflammation and peptic ulcers and is a risk factor for stomach cancer. The highest D-amino acid ratios (free D-amino acid concentration to the total corresponding free D- and L-amino acid concentration) were 29%, 26%, 18%, 4% and 1% for proline, alanine, serine, aspartate and glutamate, respectively. The gastric juice levels of L-alanine, L-serine, L-proline, L-glutamate and D-alanine in the samples obtained from subjects bearing early gastric carcinoma and H. pylori were significantly higher than in the samples from the other three groups. Except for D-alanine, there was no correlation between the D-amino acid concentrations and presence of carcinoma or H. pylori.  | 
    
| Author | Yamada, T Nagata, Y Enomoto, N Ishii, Y Sasaki, K Sato, T  | 
    
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| BackLink | https://www.ncbi.nlm.nih.gov/pubmed/16583309$$D View this record in MEDLINE/PubMed | 
    
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| SubjectTerms | Adult Aged Aged, 80 and over Alanine Amino Acids Amino Acids - analysis analysis aspartic acid bacteria Cancer Carcinoma Chronic infection Correlation D-Alanine D-Amino acids duodenal ulcers Female Gastric cancer Gastric carcinoma Gastric juice Gastric Juice - metabolism Gastric Juice - microbiology Gastritis Glutamic acid H. pylori Helicobacter Infections Helicobacter Infections - metabolism Helicobacter pylori Human Humans Infections inflammation Juices L-Alanine L-Serine Male metabolism microbiology Middle Aged Patients Peptic ulcers Proline Risk factors serine Stomach Stomach Diseases Stomach Diseases - metabolism Stomach Diseases - microbiology stomach neoplasms Ulcers  | 
    
| Title | High concentrations of D-amino acids in human gastric juice | 
    
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