Fernandez_2007_Biochim.Biophys.Acta_1771_633

Reference

Title : Comparative study on digestive lipase activities on the self emulsifying excipient Labrasol, medium chain glycerides and PEG esters - Fernandez_2007_Biochim.Biophys.Acta_1771_633
Author(s) : Fernandez S , Jannin V , Rodier JD , Ritter N , Mahler B , Carriere F
Ref : Biochimica & Biophysica Acta , 1771 :633 , 2007
Abstract : Labrasol is a lipid-based self-emulsifying excipient used in the preparation of lipophilic drugs intended for oral delivery. It is mainly composed of PEG esters and glycerides with medium acyl chains, which are potential substrates for digestive lipases. The hydrolysis of Labrasol by porcine pancreatic extracts, human pancreatic juice and several purified digestive lipases was investigated in the present study. Classical human pancreatic lipase (HPL) and porcine pancreatic lipase, which are the main lipases involved in the digestion of dietary triglycerides, showed very low levels of activity on the entire Labrasol excipient as well as on separated fractions of glycerides and PEG esters. On the other hand, gastric lipase, pancreatic lipase-related protein 2 (PLRP2) and carboxyl ester hydrolase (CEH) showed high specific activities on Labrasol. These lipases were found to hydrolyze the main components of Labrasol (PEG esters and monoglycerides) used as individual substrates, whereas these esters were found to be poor substrates for HPL. The lipolytic activity of pancreatic extracts and human pancreatic juice on Labrasol(R) is therefore mainly due to the combined action of CEH and PLRP2. These two pancreatic enzymes, together with gastric lipase, are probably the main enzymes involved in the in vivo lipolysis of Labrasol taken orally.
ESTHER : Fernandez_2007_Biochim.Biophys.Acta_1771_633
PubMedSearch : Fernandez_2007_Biochim.Biophys.Acta_1771_633
PubMedID: 17418634

Citations formats

Fernandez S, Jannin V, Rodier JD, Ritter N, Mahler B, Carriere F (2007)
Comparative study on digestive lipase activities on the self emulsifying excipient Labrasol, medium chain glycerides and PEG esters
Biochimica & Biophysica Acta 1771 :633

Fernandez S, Jannin V, Rodier JD, Ritter N, Mahler B, Carriere F (2007)
Biochimica & Biophysica Acta 1771 :633