- Tytuł:
- Gemini (dimeric) surfactant perturbation of the human erythrocyte.
- Autorzy:
-
Dubnièková, Martina
Bobrowska-Hägerstrand, Malgorzata
Söderström, Thomas
Igliè, Aleš
Hägerstrand, Henry - Powiązania:
- https://bibliotekanauki.pl/articles/1044306.pdf
- Data publikacji:
- 2000
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
TEM
flow cytometry
protection against hypotonic haemolysis
exovesiculation
human erythrocyte
detergent
cationic amphiphile
shape alteration
haemolysis - Opis:
- We studied the ability of di-cationic gemini surfactantsdi (amphiphiles), i.e. 1,4-butanediammonium-N,N-dialkyl-N,N,N',N'-tetramethyl bromides (Di-Cm-di-QAS (s = 4), where m = 8,11,13,16 and s = the number of alkyl groups in the spacer) to induce shape alteration, vesiculation, haemolysis and phosphatidylserine exposure in human erythrocytes, and to protect erythrocytes against hypotonic haemolysis. At high sublytic concentrations the Di-Cm-di-QAS (s = 4) amphiphiles rapidly induced echinocytic (spiculated) shapes and a release of exovesicles, mainly in the form of tubes, from the cell surface. Following 60 min incubation erythrocytes were sphero-echinocytic and a few cells with invaginations/endovesicles were observed. No phosphatidylserine exposure was detected. The haemolytic potency increased with an increase of the alkyl chain length. At sublytic concentrations the Di-Cm-di-QAS (s = 4) amphiphiles protected erythrocytes against hypotonic haemolysis. It is suggested that the Di-Cm-di-QAS (s = 4) amphiphiles perturb the membrane in a similar way as single-chain cationic amphiphiles, but that they do not easily translocate to the inner membrane leaflet.
- Źródło:
-
Acta Biochimica Polonica; 2000, 47, 3; 651-660
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł