Heterogeneous expression of phenobarbital-inducible cytochrome P-450 genes within the hepatic acinus in the rat
dc.contributor.author | Chianale, Jose | en_US |
dc.contributor.author | Dvorak, Caroline | en_US |
dc.contributor.author | May, Maryann | en_US |
dc.contributor.author | Gumucio, Jorge J. | en_US |
dc.date.accessioned | 2006-04-28T16:52:38Z | |
dc.date.available | 2006-04-28T16:52:38Z | |
dc.date.issued | 1986-09 | en_US |
dc.identifier.citation | Chianale, Jose; Dvorak, Caroline; May, Maryann; Gumucio, Jorge J. (1986)."Heterogeneous expression of phenobarbital-inducible cytochrome P-450 genes within the hepatic acinus in the rat." Hepatology 6(5): 945-951. <http://hdl.handle.net/2027.42/38328> | en_US |
dc.identifier.issn | 0270-9139 | en_US |
dc.identifier.issn | 1527-3350 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/38328 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=3758946&dopt=citation | en_US |
dc.description.abstract | Within the hepatic acinus, the functional unit of liver parenchyma, the induction of cytochrome P-450 protein by phenobarbital is manifested primarily in hepatocytes located closer to the hepatic venule, i.e., distal hepatocytes. The objective of this study was to determine the levels of cytochromes P-450b and P-450e mRNAs in populations of hepatocytes originating in the proximal or distal half of the liver acinus in the rat, as an approach to the elucidation of the mechanisms responsible for the heterogeneous zonal expression of cytochrome P-450 protein. The development of a new method to isolate hepatocytes originating from the proximal or distal half of the liver acinus enabled the measurement of total cytochrome P-450 content and of cytochromes P-450b and P-450e mRNAs in these hepatocytes. Levels of cytochromes P-450b and P-450e mRNAs were assessed in proximal and distal hepatocytes by Northern blot hybridization of poly(A+)RNA with a cDNA recognizing sequences of these two cytochromes. The kinetics of induction were defined by measuring these parameters after a single phenobarbital injection. Cytochrome P-450 mRNA levels reached maximum induction at 16 hr, returning to basal values by 48 hr. In contrast, total cytochrome P-450 microsomal protein content reached maximum induction after 33 hr. Hepatocytes of the distal half of the hepatic acinus responded to phenobarbital with higher levels of cytochromes P-450b and P-450e mRNAs than proximal hepatocytes. These results indicated that there is modulation of the expression of the cytochromes P-450b and P-450e genes within the hepatic acinus. | en_US |
dc.format.extent | 809223 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | W.B. Saunders | en_US |
dc.publisher | Wiley Periodiocals, Inc. | en_US |
dc.subject.other | Life and Medical Sciences | en_US |
dc.subject.other | Hepatology | en_US |
dc.title | Heterogeneous expression of phenobarbital-inducible cytochrome P-450 genes within the hepatic acinus in the rat | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Internal Medicine and Specialties | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Section of Gastroenterology, Veterans Administration Medical Center and the University of Michigan School of Medicine, Ann Arbor, Michigan 48105 | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Section of Gastroenterology, Veterans Administration Medical Center and the University of Michigan School of Medicine, Ann Arbor, Michigan 48105 | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Section of Gastroenterology, Veterans Administration Medical Center and the University of Michigan School of Medicine, Ann Arbor, Michigan 48105 | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Section of Gastroenterology, Veterans Administration Medical Center and the University of Michigan School of Medicine, Ann Arbor, Michigan 48105 ; Department of Internal Medicine, Veterans Administration Medical Center, 2215 Fuller Road, Ann Arbor, Michigan 48105 | en_US |
dc.identifier.pmid | 3758946 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/38328/1/1840060522_ftp.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1002/hep.1840060522 | en_US |
dc.identifier.source | Hepatology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
Files in this item
Remediation of Harmful Language
The University of Michigan Library aims to describe library materials in a way that respects the people and communities who create, use, and are represented in our collections. Report harmful or offensive language in catalog records, finding aids, or elsewhere in our collections anonymously through our metadata feedback form. More information at Remediation of Harmful Language.
Accessibility
If you are unable to use this file in its current format, please select the Contact Us link and we can modify it to make it more accessible to you.