Incorporation of [3H]Valproic Acid into Lipids in GT1–7 Neurons
摘要:
Valproic acid (2-propylpentanoic acid, valproate, VPA), an 8-carbon, branched chain fatty acid, is effectively used in the treatment of mania and epilepsy. The biochemical mechanisms by which this drug has its therapeutic effects are not yet established. The purpose of this study was to partially characterize the incorporation of [H-3]VPA into phospholipids of GTI-7 neurons, an immortalized hypothalamic cell line. GT1-7 neurons were grown to confluence in culture dishes, and then were incubated with various concentrations of [H-3]VPA between 10 and 400 mu g/mL for various times up to 20 hr. Total lipids were extracted and phospholipids were separated from neutral lipids using TLC. Our results indicate that [H-3]VPA (10 mu g/mL) was incorporated into phospholipids of GTI-7 neurons in a time-dependent and Saturable manner over 300 min. Subsequent separation of the lipid fraction by TLC indicated that 44.4% of the radioactivity taken up by the cells was incorporated into phospholipids and neutral lipids. One of the phospholipids migrated with a slightly lower R-f value than authentic phosphatidylcholine. Our results show that the incorporation of VPA into phospholipids and glycerides was linear with VPA concentrations from 10 to 400 mu g/mL. Finally, we synthesized 1-acyl-2-valproyl-sn-glycero-3-phosphocholine and validated its structure with nuclear magnetic resonance and electrospray mass spectrometry to verify the structure of this compound, confirming that this compound is structurally possible. We conclude that VPA is incorporated into lipids in GTI-7 neurons and discuss the possible effects of valproyl phospholipids on neuronal 'functional properties. (C) 1998 Elsevier Science Inc.
Means and Methods for the Treatment and Prevention of Allergic Diseases
申请人:Braxmeier Tobias
公开号:US20090018105A1
公开(公告)日:2009-01-15
The present invention relates of the use of certain inner ionic (zwitter ionic) phospholipids, phosphonolipids and phosphate derivatives for the preparation of a pharmaceutical composition for the treatment, prevention and/or amelioration of an immunological disorder related to mast cell sensitization. Preferred in this context are edelfosine and miltefosine. In a particularly preferred embodiment, the present invention relates to the use of miltefosine for the preparation of a pharmaceutical composition for the treatment, prevention and/or amelioration of allergic diseases, in particular acute hyperallergic diseases, like asthma.
METHODS FOR THE TREATMENT AND AMELIORATION OF ATOPIC DERMATITIS
申请人:BRAXMEIER Tobias
公开号:US20110263531A1
公开(公告)日:2011-10-27
The present invention relates of the use of certain inner ionic (zwitter ionic) phospholipids, phosphonolipids and phosphate derivatives for the preparation of a pharmaceutical composition for the treatment, prevention and/or amelioration of an immunological disorder related to mast cell sensitization and/or activation. Preferred in this context are Edelfosine, Miltefosine and Perifosine. In a particularly preferred embodiment, the present invention relates to the use of Miltefosine for the preparation of a pharmaceutical composition for the treatment, prevention and/or amelioration of allergic diseases, in particular acute hyperallergic diseases, like asthma, atopic dermatitis and mastocytosis.