Cited by 85Adrenal Hormones and DisordersCholesterol and Lipid MetabolismSteroid Chemistry and Biochemistry

Blood Cholesterol and Hydrocortisone Production in Man: Quantitative Aspects of the Utilization of Circulating Cholesterol by the Adrenals at Rest and under Adrenocorticotropin Stimulation*

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Borkowski, Abraham J., Levin, Sam, Delcroix, Claude, Mahler, Antoinette, Verhas, Vera·1967·Journal of Clinical Investigation

Abstract

A kinetic study of the conversion of blood cholesterol into hydrocortisone was carried out in two patients through prolonged infusions of cholesterol-4-(14)C. The following points appear to be established by our observations:1) The infused tracer behaved metabolically like endogenous cholesterol; it could therefore serve as a means of labeling plasma cholesterol for investigating its utilization by the adrenal cortex.2) At rest, about 80% of hydrocortisone derived from plasma cholesterol, the other 20% thus being synthesized in situ from acetate and other unlabeled precursors.3) Under ACTH stimulation the participation of plasma cholesterol in the synthesis of hydrocortisone was the same as at rest; the conversion of plasma cholesterol into hydrocortisone was thus proportional to the production of glucocorticosteroids by the adrenal glands.4) The specific activities of hydrocortisone allowed us to trace its adrenal precursors including adrenal cholesterol. The kinetics of the replacement of adrenal cholesterol by plasma cholesterol underlined the functional heterogeneity of the former. The experimental data were compatible with the following model: A fraction of plasma cholesterol entering the adrenal cell is immediately available for metabolism and conversion into steroid hormones, and another fraction turns over slowly, representing some form of storage.

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  • The adrenal glands obtain cholesterol from HDL and LDL to synthesize steroid hormones and neuroactive steroids.

    “The adrenal glands obtain cholesterol from HDL and LDL to synthesize steroid hormones and neuroactive steroids [9, 10].”

    From Sterol and lipid analyses identifies hypolipidemia and apolipoprotein disorders in autism associated with adaptive functioning deficits (2021) · cites this paper as [10]

    The Introduction and Discussion report that adrenal glands use plasma cholesterol to produce hydrocortisone, a steroid hormone. But the Discussion explicitly says the study does not determine how adrenal tissue distinguishes among cholesterol carried by different lipoproteins; it does not establish uptake from both HDL and LDL. The passages also do not address neuroactive steroids (page numbers unavailable in our copy). (LLM, conf=0.90)

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  1. Hellman, L., R. S. Rosenfeld, M. I. Eidinoff, D. K. Fukushima, and T. F. Gallagher. Isotopic stud- ies of plasma cholesterol of endogenous and ex- ogenous origins. J. clin. Invest. 1955, 34, 48.

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Authors
Borkowski, A. J., Levin, S., Delcroix, C., Mahler, A., & Verhas, V.
Affiliations
Université Libre de Bruxelles (BE)
Venue
Journal of Clinical Investigation
Published
1967-05-01
Volume
46
Issue
5
Pages
797-811
ISSN
0021-9738 (ISSN-L)
OpenAlex
W2125633864
Cited by
85
References
34
Citations by year
2025: 3 · 2023: 4 · 2022: 3 · 2021: 2 · 2020: 3 · 2019: 1 · 2017: 3 · 2016: 1 · 2015: 2 · 2014: 4 · 2013: 3 · 2012: 1
FWCI
2.02
Type
journal article
Language
en
Open access
Locations
  • Journal of Clinical Investigation (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Adrenal Hormones and Disorders
  • Health Sciences › Medicine › Surgery › Cholesterol and Lipid Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Steroid Chemistry and Biochemistry
Keywords
serum cholesterol, cortisol, adrenal cholesterol, steroidogenesis, ACTH stimulation test, adrenal cortex, glucocorticoid synthesis, cholesterol turnover
MeSH terms
Adrenal Glands, Adrenocorticotropic Hormone, Carbon Isotopes, Cholesterol, Computers, Analog, Glucocorticoids, Humans, Hydrocortisone, Kinetics, Models, Theoretical, Radiometry, Steroids

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