RGD Reference Report - Differential regulation of carbonic anhydrase II by androgen and estrogen in dorsal and lateral prostate of the rat. - Rat Genome Database

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Differential regulation of carbonic anhydrase II by androgen and estrogen in dorsal and lateral prostate of the rat.

Authors: Harkonen, PL  Makela, SI  Valve, EM  Karhukorpi, EK  Vaananen, HK 
Citation: Harkonen PL, etal., Endocrinology. 1991 Jun;128(6):3219-27.
RGD ID: 1600726
Pubmed: PMID:1903702   (View Abstract at PubMed)
DOI: DOI:10.1210/endo-128-6-3219   (Journal Full-text)

Hormone regulation of carbonic anhydrase II (CA II) was studied in rat dorsal and lateral prostate. CA II is a major soluble protein in these accessory sex glands. The immunoelectronmicroscopy showed that CA II is expressed in their epithelial cells only. For studies on hormone regulation, adult male rats were castrated for 2 or 7 days. Groups of 7-day castrates and normal rats were treated daily either with testosterone or 17-beta-estradiol for 6 days and 2-day castrates for 1 day. CA II protein was analyzed by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and quantified by RIA. The levels of CA II mRNA were studied by Northern blotting and hybridization of total RNA with a 32P-labeled mouse CA II cDNA clone. Castration of the rats decreased the concentration of CA II in lateral prostate but increased in dorsal prostate. These changes were reversed in both prostatic lobes by testosterone treatment. Estrogen treatment of castrated rats enhanced CA II concentration in lateral prostate but no effects were seen in the dorsal prostate of the same animals. In normal rats estrogen increased CA II concentration of dorsal prostate but there was no change in lateral prostate. Corresponding changes were observed in the levels of CA II mRNA in both tissues. The morphometric analyses showed that the castration- and hormone-induced changes of the mRNA and protein levels of the exclusively epithelial CA II could not be explained by any alterations in the proportions of epithelial and stromal components of the glands after hormone manipulations. The results demonstrate the differential steroid regulation of CAII in two prostatic lobes. Androgen regulates the expression of CAII at messenger RNA level, but the responses of CAII to testosterone are opposite in dorsal and lateral prostate. Estrogen increases CA II expression in lateral prostate but in dorsal prostate the castration-like effects of estrogen on CAII expression are probably indirect.

Gene Ontology Annotations    Click to see Annotation Detail View

Biological Process
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
response to steroid hormone  IEP 1600726 RGD 

Objects Annotated

Genes (Rattus norvegicus)
Car2  (carbonic anhydrase 2)


Additional Information