Results 61 to 70 of about 9,389 (199)

Differential effects of 17α-ethinylestradiol on the neutral and acidic pathways of bile salt synthesis in the rat

Journal of Lipid Research, 1999
Effects of 17α-ethinylestradiol (EE) on the neutral and acidic biosynthetic pathways of bile salt (BS) synthesis were evaluated in rats with an intact enterohepatic circulation and in rats with long-term bile diversion to induce BS synthesis.
Nynke R. Koopen, Sabine M. Post, Henk Wolters, Rick Havinga, Frans Stellaard, Renze Boverhof, Folkert Kuipers, Hans M.G. Princen   +7 more
doaj   +1 more source

RNA interference in crop protection: opportunities and challenges during the transition to commercialization

Pest Management Science, Volume 82, Issue 7, Page 5971-5986, July 2026.
RNA interference (RNAi) technologies, host‐induced gene silencing (HIGS) and spray‐induced gene silencing (SIGS), potentially offer sustainable crop protection. However, efficacy, costs, regulatory clarity, and socio‐environmental impacts require further evaluation for broader use.
Elisabetta Sergi, Anna Narduzzo, Alessandra Di Canito, Francesco Favaretto, Luca Nerva, Walter Chitarra, Lucia Bologna, Jacopo Bacenetti, Giuliana Maddalena, Simona Masiero, Ileana Vigentini, Gabriella De Lorenzis, Silvia Laura Toffolatti   +12 more
wiley   +1 more source

Effect of Estrogen and Progesterone on the Expression of Hepatic and Extrahepatic Sterol 27-Hydroxylase in Baboons ( Papio sp)

, 1996
Sterol 27-hydroxylase plays an important role in cholesterol metabolism in hepatic and extrahepatic tissues. To determine whether female sex steroid hormones influence its expression, we measured plasma and hepatic 27-hydroxycholesterol ...
Henry C. McGill, Rampratap S. Kushwaha, Evelyn M. Jackson, Bharathi Guntupalli   +3 more
core   +1 more source

Assay method for mitochondrial sterol 27-hydroxylase with 7α-hydroxy-4-cholesten-3-one as a substrate in the rat liver

Journal of Lipid Research, 2003
Mitochondrial sterol 27-hydroxylase (EC 1.14.13.15) is an important enzyme, not only in the formation of bile acids from cholesterol intermediates in the liver but also in the removal of cholesterol by side chain hydroxylation in extrahepatic tissues ...
Yoshikazu Ota, Tada-Aki Eto, Shun-Ichi Tanaka, Hideto Sueta, Hironori Shiotsuki, Yorio Maeda, Mizuho Une, Kazuo Chijiiwa   +7 more
doaj   +1 more source

T‐Cell Exhaustion in the Tumor Microenvironment: Subcellular Dysfunction, Pan‐Cancer Characteristics, and Therapeutic Interventions

Advanced Science, Volume 13, Issue 33, 15 June 2026.
This study elucidates the mechanisms of subcellular multidimensional collapse in exhausted T cells. By specifically targeting the nucleus, mitochondria, and endoplasmic reticulum, strategic interventions can effectively remodel the compromised organelle network. This integrated approach drives comprehensive T cell resuscitation, ultimately establishing
Mingxing Wang, Wanhui Dong, Jian Chen, Zhangjie Zhou, Shujuan Fu, Tingting Wu, Haiyan Jiang, Zhiying Wang, Zhixian Zhong, Yi Zhong   +9 more
wiley   +1 more source

Lipoprotein cholesterol uptake mediates upregulation of bile acid synthesis by increasing cholesterol 7a-hydroxylase but not sterol 27- hydroxylase gene expression in cultured rat hepatocytes.

, 1999
Lipoproteins may supply substrate for the formation of bile acids, and the amount of hepatic cholesterol can regulate bile-acid synthesis and increase cholesterol 7α-hydroxylase expression.
Twisk, J.W.R., Wit, E.C.M., Mager, W.H., van der Fits, L.T.E., Post, S.M., Princen, H.M.G., Hoekman, M.F.M.   +6 more
core   +1 more source

A Rare Case of Cerebrotendinous Xanthomatosis Associated With a Mutation on COG8 Gene

Journal of Investigative Medicine High Impact Case Reports, 2023
Cerebrotendinous xanthomatosis ( CTX ) is a rare hereditary disease described by a mutation in the CYP27A1 gene , which encodes the sterol 27-hydroxylase enzyme involved in the synthesis of bile acid.
Hamed Ghoshouni MD, Roham Sarmadian MD, Rana Irilouzadian MD, Habibe Nejad Biglari MD, Abolfazl Gilani MD   +4 more
doaj   +1 more source

CYP46A1‐Targeted Treatment Alleviates Long‐Term White Matter Injury Following Traumatic Brain Injury by Promoting Cholesterol Metabolic Clearance and Remyelination

CNS Neuroscience &Therapeutics, Volume 32, Issue 6, June 2026.
Our findings demonstrate that CYP46A1 plays a critical role in regulating cholesterol homeostasis in microglia and that the targeting of CYP46A1 may offer a viable therapeutic approach for traumatic brain injury (TBI). The CYP46A1 activator Efavirenz reduces white matter damage by increasing the levels of the cholesterol metabolite 24OHC, thereby ...
Lin Li, You Shi, Qing Luo, Peiwen Guo, Taotao Jin, Xufang Ru, Zhouyang Jiang, Yin Niu, Wenyan Li, Yujie Chen, Zhi Chen   +10 more
wiley   +1 more source

Insulin suppresses bile acid synthesis in cultured rat hepatocytes by down-regulation of cholesterol 7α-hydroxylase and sterol 27-hydroxylase gene transcription

, 1995
Evidence from in vivo studies indicates that the bile acid pool and bile acid excretion are increased in humans with diabetes mellitus and in experimental diabetic animals, and that both parameters return to normal levels after administration of insulin.
Twisk, J.W.R., Lehmann, E., Twisk, J., Mager, W.H., Meijer, P., Princen, H.M.G., Hoekman, M.F.M., Lehmann, E.M.   +7 more
core   +1 more source

Cholesterol and 27-hydroxycholesterol 7 alpha-hydroxylation: evidence for two different enzymes.

Journal of Lipid Research, 1993
The use of 2-hydroxypropyl-beta-cyclodextrin as a vehicle for solubilizing cholesterol and 27-hydroxycholesterol has led to a study of their rates of 7 alpha-hydroxylation in microsomal preparations from hamster liver and HepG2 cells.
KO Martin, K Budai, NB Javitt
doaj   +1 more source