Biomaterial Database

Antisickling activity of amino acid benzyl esters. 1980

M Gorecki, and C T Acquaye, and M Wilchek, and J R Votano, and A Rich

The sickling of homozygous sickel cells upon deoxygenation is inhibited in the presence of 3 mM L-phenylalanine benzyl ester (Phe-OBzl) or benzyl esters of other aromatic or hydrophobic amino acids. Phe-OBzl was found to permeate into erythrocytes rapidly, and the deoxygenated cells maintained considerable flexibility as measured by their ability to pass through 3-micron pores. The osmotic fragility of the cells was unchanged and the oxygen dissociation curve was shifted slightly from a 50% saturation values of 28.5 mm Hg to 31.0 mm Hg. At lower concentrations of Phe-OBzl some antisickling activity was seen. The Phe-OBzl antisickling activity may involve both binding to deoxyhemoglobin S and modification of the erythrocyte membrane. This class of compounds has considerable potential as therapeutic agents for the treatment of sickle cell disease.

UI	MeSH Term	Description	Entries
D009996	Osmotic Fragility	RED BLOOD CELL sensitivity to change in OSMOTIC PRESSURE. When exposed to a hypotonic concentration of sodium in a solution, red cells take in more water, swell until the capacity of the cell membrane is exceeded, and burst.	Saline Fragility,Fragility, Osmotic,Fragility, Saline
D010100	Oxygen	An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.	Dioxygen,Oxygen-16,Oxygen 16
D010649	Phenylalanine	An essential aromatic amino acid that is a precursor of MELANIN; DOPAMINE; noradrenalin (NOREPINEPHRINE), and THYROXINE.	Endorphenyl,L-Phenylalanine,Phenylalanine, L-Isomer,L-Isomer Phenylalanine,Phenylalanine, L Isomer
D004910	Erythrocyte Membrane	The semi-permeable outer structure of a red blood cell. It is known as a red cell 'ghost' after HEMOLYSIS.	Erythrocyte Ghost,Red Cell Cytoskeleton,Red Cell Ghost,Erythrocyte Cytoskeleton,Cytoskeleton, Erythrocyte,Cytoskeleton, Red Cell,Erythrocyte Cytoskeletons,Erythrocyte Ghosts,Erythrocyte Membranes,Ghost, Erythrocyte,Ghost, Red Cell,Membrane, Erythrocyte,Red Cell Cytoskeletons,Red Cell Ghosts
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000596	Amino Acids	Organic compounds that generally contain an amino (-NH2) and a carboxyl (-COOH) group. Twenty alpha-amino acids are the subunits which are polymerized to form proteins.	Amino Acid,Acid, Amino,Acids, Amino
D000755	Anemia, Sickle Cell	A disease characterized by chronic hemolytic anemia, episodic painful crises, and pathologic involvement of many organs. It is the clinical expression of homozygosity for hemoglobin S.	Hemoglobin S Disease,HbS Disease,Sickle Cell Anemia,Sickle Cell Disease,Sickle Cell Disorders,Sickling Disorder Due to Hemoglobin S,Anemias, Sickle Cell,Cell Disease, Sickle,Cell Diseases, Sickle,Cell Disorder, Sickle,Cell Disorders, Sickle,Disease, Hemoglobin S,Hemoglobin S Diseases,Sickle Cell Anemias,Sickle Cell Diseases,Sickle Cell Disorder
D000986	Antisickling Agents	Agents used to prevent or reverse the pathological events leading to sickling of erythrocytes in sickle cell conditions.	Desickling Agents,Agents, Antisickling,Agents, Desickling
D001593	Benzyl Compounds	Benzene derivatives that contain a benzyl group with the general formula Phenyl-CH2-R.	Compounds, Benzyl
D066298	In Vitro Techniques	Methods to study reactions or processes taking place in an artificial environment outside the living organism.	In Vitro Test,In Vitro Testing,In Vitro Tests,In Vitro as Topic,In Vitro,In Vitro Technique,In Vitro Testings,Technique, In Vitro,Techniques, In Vitro,Test, In Vitro,Testing, In Vitro,Testings, In Vitro,Tests, In Vitro,Vitro Testing, In