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Evidence for a partial deficiency of the LDL (apo B,E) receptor within a family of rhesus monkeys with a spontaneous hypercholesterolemia

Conference · · Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States)
OSTI ID:6173586
; ; ; ; ; ;

Spontaneous hypercholesterolemia is rare among non-human primates. Through screening of a rhesus monkey colony they have identified a family in which 3 out of its 6 members have a persistent hypercholesterolemia on a cholesterol-free Purina Chow diet and are high responders to a dietary fat challenge. On a basal diet the 3 affected animals also exhibited high plasma levels of LDL and apoB. To shed light on the mechanism of the hypercholesterolemia they have grown in culture fibroblasts from skin biopsies obtained from all members of the rhesus monkey family and 12 control. Binding studies at 4/sup 0/C and ligand blotting experiments using /sup 125/I-LDL of either normolipidemic rhesus monkeys or human subjects have shown that the fibroblasts from the 3 monkeys with a spontaneous hypercholesterolemia have a significant reduction of the number of LDL receptor and to the same extent as fibroblasts derived from subjects with heterozygous FH studied at the same time. The data suggest that the spontaneous elevation of plasma cholesterol observed in the 3 family members is related, at least in part, to a defective uptake of LDL by the LDL receptor pathway.

Research Organization:
Univ. of Chicago, IL
OSTI ID:
6173586
Report Number(s):
CONF-870644-
Journal Information:
Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States), Journal Name: Fed. Proc., Fed. Am. Soc. Exp. Biol.; (United States) Vol. 46:6; ISSN FEPRA
Country of Publication:
United States
Language:
English

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Related Subjects

550201* -- Biochemistry-- Tracer Techniques
550901 -- Pathology-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
ANIMAL CELLS
BETA DECAY RADIOISOTOPES
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL PATHWAYS
BODY
CHOLESTEROL
CONNECTIVE TISSUE CELLS
DAYS LIVING RADIOISOTOPES
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
FIBROBLASTS
HYDROXY COMPOUNDS
INTERMEDIATE MASS NUCLEI
IODINE 125
IODINE ISOTOPES
ISOTOPE APPLICATIONS
ISOTOPES
KINETICS
LIGANDS
LIPIDS
LIPOPROTEINS
MEMBRANE PROTEINS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PATHOGENESIS
PROTEINS
RADIOISOTOPES
REACTION KINETICS
RECEPTORS
SKIN
SOMATIC CELLS
STEROIDS
STEROLS
TRACER TECHNIQUES
VASCULAR DISEASES