Expression of lipoprotein lipase in ovaries of the guinea pig.
Guinea pig ovaries were found to have significant lipoprotein lipase (LPL) activity, corresponding to almost one-tenth the activity in paraovarian adipose tissue and in heart per gram of tissue. Northern blot analysis demonstrated the same three species of LPL mRNA in ovaries (1.8, 3.1, and 3.5 kb) as in adipose tissue. In situ hybridization showed LPL mRNA in cells of the follicular wall, and in granulosa and theca lutein cells of the mature corpus luteum. By immunolocalization, LPL was visualized in the vascular endothelium throughout the ovary, but with highest concentration in the endothelium of capillaries and large vessels of the cortical region and capillaries in the stroma of the corpus luteum. These results suggest that in the guinea pig LPL may have a function for the delivery of lipids from lipoproteins to ovarian cells.
Camps
L
L
Department of Biochemistry and Physiology, University of Barcelona, Spain.
Gåfvels
M
M
Reina
M
M
Wallin
C
C
Vilaró
S
S
Olivecrona
T
T
D000273:Adipose Tissue / Q000201:enzymology; D000818:Animals; D002196:Capillaries; D003338:Corpus Luteum / Q000201:enzymology; D004730:Endothelium, Vascular / Q000201:enzymology; D005260:Female; D015870:Gene Expression; D006107:Granulosa Cells / Q000201:enzymology; D006168:Guinea Pigs; D007150:Immunohistochemistry; D008071:Lipoprotein Lipase / Q000032:analysis / Q000235:genetics*; D009206:Myocardium / Q000201:enzymology; D009693:Nucleic Acid Hybridization; D009928:Organ Specificity; D010053:Ovary / Q000201:enzymology*; D012333:RNA, Messenger / Q000032:analysis* / Q000235:genetics; D013799:Theca Cells / Q000201:enzymology
D012333:RNA, Messenger; D008071:Lipoprotein Lipase