Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: EC:3.2.1.36 (hyaluronidase)
 4,606 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

We determined the hyaluronic acid disaccharides, delta Di-HA, in the gingival crevicular fluid (GCF) and whole saliva of patients with periodontal disease, and in the peri-implant sulcus fluid (PISF) from sites around titanium osseointegrated implants, and compared these values with those in the GCF and whole saliva of controls. We also determined values for chondroitin sulfate disaccharide isomers at the same time. Glycosaminoglycans were extracted by digestion with Pronase E, followed by digestion of GAGs with hyaluronidase SD and chondroitinase ACII. Unsaturated disaccharide isomers produced from hyaluronic acid and chondroitin sulfate were analyzed by high-performance liquid chromatography (HPLC). The hyaluronic acid disaccharide delta Di-HA was found in all samples of GCF, PISF and whole saliva. The concentration of delta Di-HA in both GCF and whole saliva of the periodontitis group was greater than that in the controls. There was no difference in the concentration of delta Di-HA between the PISF and GCF of the controls. The ratios of hyaluronic acid to chondroitin sulfate in the GCF and in the whole saliva of the periodontitis group were significantly lower than that of the controls. There was no difference between the ratios in PISF and those in GCF of the controls. These results indicate that checking hyaluronic acid in GCF and whole saliva using HPLC is a useful means of assessing the condition of periodontal tissues, and that assaying hyaluronic acid in PISF may also be effective for monitoring the condition of tissues around dental implants.
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PMID:Analysis of hyaluronic acid in human gingival crevicular fluid using high-performance liquid chromatography. 987 78

1. Particulate fractions prepared from disrupted cells of Bacillus licheniformis N.C.T.C. 6346 catalyse the uptake of radioactivity from UDP-[(14)C]glucuronic acid or UDP-N[(14)C]-acetylglucosamine. Maximal uptake requires the presence of both nucleotides and Mg(2+) ions. The reaction is inhibited markedly by high concentrations of novobiocin and, to a certain extent, by vancomycin and by methicillin. 2. The radioactive product formed is resistant to Pronase and is soluble in 5% (w/v) trichloroacetic acid. It is of high molecular weight, from its behaviour on columns of Sephadex G-50 or G-200, and behaves during paper electrophoresis in n-acetic acid and chromatography on DEAE-cellulose in a manner similar to teichuronic acid. 3. Both teichuronic acid and the synthesized material are resistant to testicular hyaluronidase and to Flavobacterium heparinum heparinase. 4. The specific activity of suspensions of broken cells or of washed particulate fractions is greatest when they are prepared from exponentially growing cells. Fractions obtained from late exponential-phase or stationary-phase cells have very low activity. 5. The galactosamine content of B. licheniformis N.C.T.C. 6346 cell walls increases during the exponential phase and decreases during the stationary phase.
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PMID:The cell wall of Bacillus licheniformis N.C.T.C. 6346: Biosynthesis of the teichuronic acid. 1674 46


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