Results 61 to 70 of about 12,744 (156)

Functional Segregation of Pancreatic Microcirculation Reveals Sex‐Dependent Microhemodynamic Signatures

Comprehensive Physiology, Volume 16, Issue 2, April 2026.
Pancreatic exocrine microcirculation exhibits sexual dimorphism arising from steroid–genetic interactions. Laser Doppler flowmetry combined with wavelet analysis identifies a male passive coupling phenotype aligned with systemic pressure and a female active vasomotion phenotype driven by ERβ‐mediated, NO‐dependent oscillations.
Yuan Li, Yingyu Wang, Bing Wang, Qin Ouyang, Weiqi Liu, Xiang Xu, Xu Zhang, Mingming Liu, Ruijuan Xiu   +8 more
wiley   +1 more source

Regulation of caveolin and caveolae by cholesterol in MDCK cells

Journal of Lipid Research, 1998
We have examined the expression of caveolin in MDCK cells under conditions that vary cellular cholesterol concentration. Caveolin mRNA levels dropped to one-sixth of control levels after treatment with simvastatin, an inhibitor of cholesterol synthesis ...
Deborah Hailstones, Leanne S. Sleer, Robert G. Parton, Keith K. Stanley   +3 more
doaj   +1 more source

4β-Hydroxycholesterol Signals From the Liver to Regulate Peripheral Cholesterol Transporters

Frontiers in Pharmacology, 2020
Activation of pregnane X receptor (PXR) elevates circulating 4β-hydroxycholesterol (4βHC), an agonist of liver X receptor (LXR). PXR may also regulate 25-hydroxycholesterol and 27-hydroxycholesterol.
Tuire Salonurmi, Tuire Salonurmi, Heba Nabil, Heba Nabil, Heba Nabil, Justiina Ronkainen, Justiina Ronkainen, Tuulia Hyötyläinen, Heidi Hautajärvi, Markku J. Savolainen, Markku J. Savolainen, Markku J. Savolainen, Ari Tolonen, Matej Orešič, Päivi Känsäkoski, Jaana Rysä, Jukka Hakkola, Jukka Hakkola, Jukka Hakkola, Janne Hukkanen, Janne Hukkanen, Janne Hukkanen   +21 more
doaj   +1 more source

Steroid Recognition in Adhesion GPCRs: A Structural and Pharmacological Perspective

Pharmacology Research &Perspectives, Volume 14, Issue 2, April 2026.
ABSTRACT Emerging evidence suggests steroids may act as generalizable ligands for adhesion GPCRs, a receptor class with considerable pharmacological potential. While most studies have focused on the ADGR‘G' subfamily, recent cryo‐EM structures of the androgens 5α‐dihydrotestosterone (5α‐DHT) and methenolone bound to ADGRD1 revealed a putative steroid ...
Bethany Fleming, Abdul‐Akim Guseinov, Irina G. Tikhonova, Graeme Milligan, Nicole A. Perry‐Hauser   +4 more
wiley   +1 more source

Pregnane X Receptor Regulates Human Endocrine System by Inducing Sex Hormone–Binding Globulin Expression

Basic &Clinical Pharmacology &Toxicology, Volume 138, Issue 4, April 2026.
ABSTRACT Sex hormone–binding globulin (SHBG) is a sex hormone carrier. We aimed to characterize the role of pregnane X receptor (PXR), a major regulator of drug metabolism, in SHBG regulation. Serum SHBG was measured in four clinical trials (n = 61) and expression in in vitro experiments in human 3D hepatocyte spheroids and HepG2 cells.
Maria H. Ahonen, Anja Konzack, Tomas Smutny, Petr Pavek, Jukka Hakkola, Janne Hukkanen   +5 more
wiley   +1 more source

A pilot study of the association between maternal mid-pregnancy cholesterol and oxysterol concentrations and labor duration

Lipids in Health and Disease, 2023
Background Previous animal model studies have highlighted a role for cholesterol and its oxidized derivatives (oxysterols) in uterine contractile activity, however, a lipotoxic state associated with hypercholesterolemia may contribute to labor dystocia ...
Todd C. Rideout, Jaclyn Wallace, Xiaozhong Wen, Vanessa M. Barnabei, Kai Ling Kong, Richard W. Browne   +5 more
doaj   +1 more source

On the substrate specificity of human CYP27A1

Journal of Lipid Research, 2003
The mitochondrial sterol 27-hydroxylase (CYP27A1) is required for degradation of the C27-sterol side chain in bile acid biosynthesis. CYP27A1 seems, however, to have roles beyond this, as illustrated by patients with a deficient sterol 27-hydroxylase due
Maria Norlin, Sara von Bahr, Ingemar Björkhem, Kjell Wikvall   +3 more
doaj   +1 more source

Endogenous oestrogens as neuroprotective modulators in the human retina: Evidence from transcriptomic profiling and aromatase inhibition

Journal of Neuroendocrinology, Volume 38, Issue 4, April 2026.
Single‐cell transcriptomics reveals that the human retina expresses a broad repertoire of steroid hormone biosynthesis and estrogen signalling genes. Functional validation in retinal explants shows that local estrogen synthesis is neuroprotective, preventing photoreceptor death and limiting microglial activation. Abstract Steroid hormones, particularly
Antolin Canto, Javier Valero‐Ochando, Rosa López‐Pedrajas, Teresa Olivar, Vicente Hernández‐Rabaza, Inmaculada Almansa, María Miranda   +6 more
wiley   +1 more source

Activation of liver X receptor plays a central role in antiviral actions of 25-hydroxycholesterol

Journal of Lipid Research, 2018
Production of 25-hydroxycholesterol (25HC), a potent inhibitor of viral infection, is catalyzed by cholesterol 25-hydroxylase (CH25H). We previously reported that 25HC induced CH25H expression in a liver X receptor (LXR)-dependent manner, implying that ...
Ying Liu, Zhuo Wei, Ye Zhang, Xingzhe Ma, Yuanli Chen, Miao Yu, Chuanrui Ma, Xiaoju Li, Youjia Cao, Jian Liu, Jihong Han, Xiaoxiao Yang, Yajun Duan   +12 more
doaj   +1 more source

Resilient Calvarial Bone Marrow Supports Retinal Repair in Type 2 Diabetes

Advanced Science, Volume 13, Issue 13, 3 March 2026.
Skull bone (calvarium) marrow in diabetic mice stay structurally intact and keeps making blood cells, unlike the bone marrow of the leg bones. The skull marrow is exposed to cerebrospinal fluid (CSF), which contains protective molecules called oxysterols.
Bright Asare‐Bediako, Sergio Li Calzi, Julia G. Behnsen, Ram Prasad, Magdalena Blaszkiewicz, Yvonne Adu‐Rutledge, Robert F. Rosencrans, Jason L. Floyd, Ashley Rennhack, Denise Stanford, Anna Lin, Todd A. Lydic, Carl M. Sheridan, Michael E. Boulton, Kristy L. Townsend, Julia V. Busik, Maria B. Grant   +16 more
wiley   +1 more source