Expression of UDP-glucuronosyltransferase 1A4 in human placenta at term
Reimers, Arne LU
; Østby, Lene
; Stuen, Ina
and Sundby, Eirik
(2011)
In European Journal of Drug Metabolism and Pharmacokinetics
35(3-4).
p.79-82
- Abstract
The placenta contains a large variety of metabolizing enzymes, among them UDP-glucuronosyltransferase (UGT). Several UGT2B isozymes have so far been detected in human placenta, but little is known on placental expression of UGT1A isozymes. The antiepileptic drug lamotrigine (LTG) is a UGT1A4-substrate, and its serum concentration falls by over 50% during pregnancy, leading to impaired seizure control. The placenta may be involved in this. Microsomes from term placentas of 4 LTG-users and 10 healthy control subjects were prepared. Western blot analysis detected UGT1A proteins in all placentas. The presence of UGT1A4 in placenta from LTG users was confirmed with UGT1A4 commercial standard and a specific UGT1A4 primary antibody. Since LTG... (More)
The placenta contains a large variety of metabolizing enzymes, among them UDP-glucuronosyltransferase (UGT). Several UGT2B isozymes have so far been detected in human placenta, but little is known on placental expression of UGT1A isozymes. The antiepileptic drug lamotrigine (LTG) is a UGT1A4-substrate, and its serum concentration falls by over 50% during pregnancy, leading to impaired seizure control. The placenta may be involved in this. Microsomes from term placentas of 4 LTG-users and 10 healthy control subjects were prepared. Western blot analysis detected UGT1A proteins in all placentas. The presence of UGT1A4 in placenta from LTG users was confirmed with UGT1A4 commercial standard and a specific UGT1A4 primary antibody. Since LTG is primarily metabolized by UGT1A4 and this isozyme is shown to be present in placenta at term, it may be hypothesized that the placenta is involved in the fall of LTG serum concentrations during pregnancy.
(Less)
- author
- Reimers, Arne
LU
; Østby, Lene
; Stuen, Ina
and Sundby, Eirik
- publishing date
- 2011-01
- type
- Contribution to journal
- publication status
- published
- keywords
- Lamotrigine, Microsomes, Placenta, UGT
- in
- European Journal of Drug Metabolism and Pharmacokinetics
- volume
- 35
- issue
- 3-4
- pages
- 79 - 82
- publisher
- Adis
- external identifiers
-
- pmid:21302032
- scopus:79953773504
- ISSN
- 0378-7966
- DOI
- 10.1007/s13318-010-0021-x
- language
- English
- LU publication?
- no
- id
- 8af0a405-02af-4641-bc66-b1cdfbdac3d2
- date added to LUP
- 2024-08-31 14:52:21
- date last changed
- 2025-06-23 08:47:05
@article{8af0a405-02af-4641-bc66-b1cdfbdac3d2,
abstract = {{<p>The placenta contains a large variety of metabolizing enzymes, among them UDP-glucuronosyltransferase (UGT). Several UGT2B isozymes have so far been detected in human placenta, but little is known on placental expression of UGT1A isozymes. The antiepileptic drug lamotrigine (LTG) is a UGT1A4-substrate, and its serum concentration falls by over 50% during pregnancy, leading to impaired seizure control. The placenta may be involved in this. Microsomes from term placentas of 4 LTG-users and 10 healthy control subjects were prepared. Western blot analysis detected UGT1A proteins in all placentas. The presence of UGT1A4 in placenta from LTG users was confirmed with UGT1A4 commercial standard and a specific UGT1A4 primary antibody. Since LTG is primarily metabolized by UGT1A4 and this isozyme is shown to be present in placenta at term, it may be hypothesized that the placenta is involved in the fall of LTG serum concentrations during pregnancy.</p>}},
author = {{Reimers, Arne and Østby, Lene and Stuen, Ina and Sundby, Eirik}},
issn = {{0378-7966}},
keywords = {{Lamotrigine; Microsomes; Placenta; UGT}},
language = {{eng}},
number = {{3-4}},
pages = {{79--82}},
publisher = {{Adis}},
series = {{European Journal of Drug Metabolism and Pharmacokinetics}},
title = {{Expression of UDP-glucuronosyltransferase 1A4 in human placenta at term}},
url = {{http://dx.doi.org/10.1007/s13318-010-0021-x}},
doi = {{10.1007/s13318-010-0021-x}},
volume = {{35}},
year = {{2011}},
}