title: Determination of histamine in microdialysis samples from Guinea pig skin by high-performance liquid chromatography with fluorescence detection.
abstract: OBJECTIVE
  To develop a sensitive and selective liquid-chromatographic method for the determination of histamine in microdialysis samples from guinea pig skin following allergenic provocation.
  
  
  METHODS
  The novel fluorescence derivatization method is based on an intramolecular excimer-forming reaction between 2 amino moieties of histamine and 2 molecules of 4-(1-pyrene)butanoyl chloride (PBC) yielding the corresponding dipyrene-labeled derivative.
  
  
  RESULTS
  The PBC derivative of histamine was separated within 20 min, and the detection limit (signal-to-noise ratio = 3) of histamine was 0.6 fmol/20 μl volume injected. The basal extracellular levels of histamine in guinea pig skin microdialysates were 20.6 ± 1.7 fmol/10 μl. Subcutaneous administration of histamine liberator compound 48/80 (3 mg/kg) increased the extracellular histamine levels in the skin dialysates by about 860%, whereas ovalbumin challenge (2 mg/kg i.v.) in the sensitized guinea pigs increased the extracellular histamine levels by about 3,030%.
  
  
  CONCLUSIONS
  The novel technique for histamine determination in microdialysis samples from the guinea pig skin may be utilized in preclinical research of antihistaminergic drugs and evaluation of allergenic properties of various dermal preparations such as transdermal drug delivery systems.
authors: Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden. takashi.yoshitake @ ki.se
authors: T
authors: T
authors: Yoshitake
authors: S
authors: S
authors: Ijiri
authors: S
authors: S
authors: Yoshitake
authors: K
authors: K
authors: Todoroki
authors: H
authors: H
authors: Yoshida
authors: J
authors: J
authors: Kehr
authors: H
authors: H
authors: Nohta
authors: M
authors: M
authors: Yamaguchi
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D006168:Guinea Pigs; D006632:Histamine / Q000032:analysis*; D008297:Male; D017551:Microdialysis / Q000379:methods*; D010047:Ovalbumin / Q000276:immunology; D012867:Skin / Q000378:metabolism; D013050:Spectrometry, Fluorescence / Q000379:methods*; D003189:p-Methoxy-N-methylphenethylamine / Q000276:immunology
chemical_list: D003189:p-Methoxy-N-methylphenethylamine; D006632:Histamine; D010047:Ovalbumin