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The effect of humic substances isolated from a variety of marine and lacustrine environments on different microorganisms [commun.]

100%

Kupryszewski G. , Pempkowiak J. , Kędzia A.

2001

tom No. 43 (2)

257-261

The antimicrobial activity of twelve preparations of humic substances isolated from sea water, marine bottom sediments and lake water was examined. Humic substances from marine bottom sediment samples were fractionated into humic and/or fulvic acids. The susceptibility of 11 strains of anaerobic, 8 strains of aerobic bacteria and 2 strains of yeast-like fungi to preparations of humic substances, humic and/or fulvic acids was determined employing the plate dilution technique in Brucella agar (anaerobic bacteria), Mueller-Hinton agar (aerobic bacteria) and Sabouraud agar (yeast-like fungi). Concentrations from 150 to 600 žg ml-1 of the preparations examined inhibited the growth of numerous microorganisms (Table). The results obtained seem to indicate that humic substances are involved in the self-purification of sea and lake waters.

Statherin and its shortened analogues

75%

Wojciechowska I. , Kochańska B. , Stelmańska E. , Knap N. , Maćkiewicz Z. , Kupryszewski G.

1998

tom Vol. 72, nr 9

2098-2102

Statherin is a 43-amino acid residue phosphominiprotein present in human parotid and submandibular saliva. It may take part in transport of calcium and phosphate and most probably is partly responsible for the protection and recalcification of tooth enamel. The solid phase synthesis of statherin and its three shorttened analoques: (1-15)statherin, [Ser(2), Ser(3)](1-15) statherin and [Asp(2), Asp(3)](1-15) statherin is presented. It was established that polyclonal antibodies directed against three shortened analoques showed affinity to synthetic statherin and statherin in saliva.

Synthesis of human heat shock protein 70 (29-42) fragment and evaluation of its immunogenicity

63%

Karawajczyk B. , Wysocki J. , Kunikowska D. , Maćkiewicz Z. , Głośnicka R. , Korzeniowski A. , Górski J. , Kupryszewski G.

1998

tom Vol. 72, nr 6

1017-1020

The 29-42 fragment of human heat shock protein 70 (hsp 70) was synthesized by the solid phase method. As determined by enzyme-linked immunosorbent assay (ELISA), the synthetic hsp 70(29-42) peptide generated relatively strong immune response in immunized rabbits. Antibody titers were comparable with anti hsp 70 antibody serum level that was induced by immunization with recombinant protein (hsp 70). It was established that antibodies directed against hsp 70(29-42) peptide could be applied in ELISA for detecting hsp 70 in body fluids and tissues.

Enantiomers of Hepatitis B Virus (HBV) Surface Antigen (140-146) S Region Fragment : Synthesis and Studies on Immunological Properties

63%

Kunikowska D. , Dera-Tomaszewska B. , Dziadziuszko H. , Wysocki J. , Wolańska I. , Maćkiewicz A. , Głosnicka R. , Kupryszewski G.

1999

tom Vol. 73, nr 11

1803-1809