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The activity of hydrolases of larval stages of Anisakis simplex [Nematoda]

100%

Lopienska-Biernat E. , Zoltowska K. , Rokicki J.

nr 3

Candida albicans Berthout, 1923: Hydrolases activity and own method of digestive tract strains biotyping

100%

Kurnatowski M. , Wasowska-Krolikowska K. , Kurnatowska A.

nr 4

112 strains of Candida albicans were isolated from oral cavity and ontocenoses of the upper digestive tract (endoscopy) of children (age: 5-17) with gastrointestinal disorders. Axenic strains were differentiated with API 20C AUX and API ZYM tests (bioMerieux). Then enzymograms and biotypes were determined for all the strains based on the activity of 19 hydrolases. The highest activity was noted for: e₂ - phosphatase alcaline, e₆ – leucine arylamidase, e₁₁ - phosphatase acid, e₅ - lipase (c₁₄); e₇ - valine arylamidase, e₁₂ - naphtol-AS-BI-phosphohydrolase, e₁₆ - α-glucosidase and e₁₈ - N-acetyl-ß-glucosamidase, and the latter four were used for biotyping procedures. Our own system was based on the mathematical binominal distribution formula (1: 4: 6: 4: 1): all „+”; one „ -” three „+”; two „-”, two ,,+”; tbree „-”, one „+”; all „-”. We bave found the following biotypes: A (16.1 ± 3.5%), B₁ (2.7 ± 2.53%), B₃ (8.0 ± 25%), B₄ (22.3 ± 3.9%), C₂ (1.8 ± 1.3%), C₃ (7.1 ± 2.4%), C₆ (30.4 ± 4.3%), D₃ (11.6 ± 3.0%).

The activity of hydrolases of entomopathogenic nematodes

86%

Zoltowska K. , Lopienska E.

nr 4

Similar patterns of hydrolases were observed in three species representing two genera of entomopathogenic nematodes: Steinernema affinis, S. feltiae, and Heterorhabditis zealandica. The same enzymes were present in the studied nematodes but they differed in the level of activity of individual sub-classes of enzymes. A higher activity of esterases and proteolytic enzymes could be observed for H. zealandica than for S. affinis and S. feltiae. On the other hand, the activity of glycosidases in steinernematids was generally much higher than in H. Zealandica.