title: [UPLC-Q-TOF-MS analysis of naringin and naringenin and its metabolites in rat plasma after intragastrical administration of alcohol extract of exocarpium Citri grandis].
abstract: OBJECTIVE
  To analyze naringin, naringenin and its metabolites in rat plasma after intragastric administration of exocarpium Citri grandis alcohol extract.
  
  
  METHODS
  Rat blood samples were collected 1.0 hour after oral administration of 50 g x kg(-1) exocarpium Citri grandis alcohol extract and analyzed by UPLC-Q-TOF with MS(E) function. The post-acquisition data were processed using Metabolynx.
  
  
  RESULTS
  Naringin (M1), naringenin (M2), naringin-5-O-glucuronide (M3), naringin-4-O-glucuronide (M4), glucuronide conjugate of naringenin (M5), naringin-4-O-sulfate (M6), methylated conjugate of hydroxylated naringenin (M7), glucuronide and sulfate conjugate of naringenin (M8), glucuronide conjugate of hydroxylated naringenin (M9) in rat plasma were detected. M3, M4, M6 were first reported as the metabolites of naringin. M7, M9 were first reported as the metabolites of naringenin.
  
  
  CONCLUSIONS
  The results indicated that naringin, naringenin can be metabolited as the forms of glucuronidation, sulfation and naringenin can also be metabolited as the forms of methylation with hydroxylation and glucuronidation with hydroxylation in vivo after administration.
authors.affiliation: School of Pharmacological Science, Jiangsu University, Zhenjiang 212013, China.
authors.forename: Guoling
authors.initials: G
authors.lastname: Sun
authors.forename: Dawei
authors.initials: D
authors.lastname: Qian
authors.forename: Jin'ao
authors.initials: J
authors.lastname: Duan
authors.forename: Xiangming
authors.initials: X
authors.lastname: Li
authors.forename: Jianyi
authors.initials: J
authors.lastname: Wan
authors.forename: Jianming
authors.initials: J
authors.lastname: Guo
mesh_terms: D000818:Animals; D002851:Chromatography, High Pressure Liquid; D002957:Citrus / Q000737:chemistry*; D004333:Drug Administration Routes; D044950:Flavanones / Q000097:blood* / Q000378:metabolism*; D008297:Male; D013058:Mass Spectrometry; D010936:Plant Extracts / Q000008:administration & dosage* / Q000097:blood / Q000378:metabolism; D011897:Random Allocation; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D044950:Flavanones; D010936:Plant Extracts; C005273:naringenin; C005274:naringin