Results 21 to 30 of about 2,101,293 (251)

Cholesterol homeostasis in human brain: turnover of 24S-hydroxycholesterol and evidence for a cerebral origin of most of this oxysterol in the circulation

open access: yesJournal of Lipid Research, 1998
We have previously demonstrated that the brain contains about 80% of the 24S-hydroxycholesterol in the human body and that there is a net flux of this steroid from the brain into the circulation (Lütjohann, D. et al. 1996. Proc. Natl. Acad. Sci. USA. 93:
Ingemar Björkhem   +5 more
doaj   +1 more source

Cholesterol nucleation time in gallbladder bile of patients with solitary or multiple cholesterol gallstones [PDF]

open access: yes, 1992
Patients with multiple cholesterol gallbladder stones have been found to be at a higher risk for the recurrence of gallstones after successful nonsurgical treatment than those with a solitary stone.
Ritter, Christoph von   +4 more
core   +1 more source

Increased protein expression of ABCA1, HMG-CoA reductase, and CYP46A1 induced by garlic and allicin in the brain mouse and astrocytes-isolated from C57BL/6J [PDF]

open access: yesAvicenna Journal of Phytomedicine, 2021
Objective: Regulation of cholesterol level is essential for the brain optimal function. The beneficial effect of garlic consumption on cholesterol homeostasis is well known; however, the molecular mechanism to support its properties is unclear.
Zahra Nazeri   +4 more
doaj   +1 more source

The differentiation of cholesterol and pigment gallstones [PDF]

open access: yes, 1989
Gallbladder biles and stones were obtained at 116 cholecystectomies for symptomatic gallstone disease. All 33 patients younger than 50 years had cholesterol stones, whereas 40% of the older patients had pigment stones.
Jüngst, Dieter
core   +1 more source

Early and brain region-specific decrease of de novo cholesterol biosynthesis in Huntington's disease: A cross-validation study in Q175 knock-in mice

open access: yesNeurobiology of Disease, 2017
Cholesterol precursors and cholesterol levels are reduced in brain regions of Huntington's disease (HD) mice. Here we quantified the rate of in vivo de novo cholesterol biosynthesis in the HD brain.
Mahalakshmi Shankaran   +11 more
doaj   +1 more source

Transcriptional and post-translational changes in the brain of mice deficient in cholesterol removal mediated by cytochrome P450 46A1 (CYP46A1). [PDF]

open access: yesPLoS ONE, 2017
Cytochrome P450 46A1 (CYP46A1) converts cholesterol to 24-hydroxycholesterol and thereby controls the major pathways of cholesterol removal from the brain.
Natalia Mast   +4 more
doaj   +1 more source

Urinary cholesterol in cancer screening [PDF]

open access: yes, 1982
Cholesterol determinations in morning urine samples were taken in 235 selected patients with a positive test for microscopic hematuria. Values ranged from 0.2 to 76.0 mg (median 5.5) in 23 patients with urologic malignancies and from 0.1 to 33.4 mg ...
Tauber, Roland   +3 more
core   +1 more source

Cholesterol and Alzheimer’s Disease; From Risk Genes to Pathological Effects

open access: yesFrontiers in Aging Neuroscience, 2021
While the central nervous system compromises 2% of our body weight, it harbors up to 25% of the body’s cholesterol. Cholesterol levels in the brain are tightly regulated for physiological brain function, but mounting evidence indicates that excessive ...
Femke M. Feringa   +3 more
doaj   +1 more source

Extracellular calcium reduction strongly increases the lytic capacity of pneumolysin from streptococcus pneumoniae in brain tissue [PDF]

open access: yes, 2011
Background. Streptococcus pneumoniae causes serious diseases such as pneumonia and meningitis. Its major pathogenic factor is the cholesterol-dependent cytolysin pneumolysin, which produces lytic pores at high concentrations.
Elke Maier   +23 more
core   +1 more source

Effect of phospholipids and bile acids on cholesterol nucleation time and vesicular/micellar cholesterol in gallbladder bile of patients with cholesterol stones [PDF]

open access: yes, 1993
Supersaturation and rapid nucleation of cholesterol in bile are of key importance in the pathogenesis of cholesterol gallstones. While the effects of bile acids and phospholipids on cholesterol saturation of bile have been extensively studied, their ...
Paumgartner, Gustav   +4 more
core   +1 more source

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