Results 71 to 80 of about 4,144,108 (357)

A stepwise emergence of evolution in the RNA world

FEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Insulin Requirement Profiles of Short-Term Continuous Subcutaneous Insulin Infusion Therapy in Patients With Type 2 Diabetic Nephropathy

International Journal of Endocrinology
Conclusion: In patients with T2DKD who received short-term CSII therapy, the insulin requirement decline with the decrease of eGFR, while the %TBa did not change significantly.
Qianqiu Feng, Biyun Li, Jiating Lin, Li Zou, Wen Xu, Longyi Zeng, Ping Li, Shuo Lin   +7 more
doaj   +1 more source

Extracellular Vesicles Derived from Three-Dimensional-Cultured Human Umbilical Cord Blood Mesenchymal Stem Cells Prevent Inflammation and Dedifferentiation in Pancreatic Islets

Stem Cells International, 2023
It is unclear whether extracellular vesicles (EVs) from mesenchymal stem cells (MSCs) have a direct protective effect on pancreatic islets. In addition, whether culturing MSCs in three dimensions (3D) instead of a monolayer (2D) can induce changes in the
Eunwon Lee, Seungyeon Ha, Gyuri Kim, Jae Hyeon Kim, Sang-Man Jin   +4 more
doaj   +1 more source

Resistance to BRAF inhibitors induces glutamine dependency in melanoma cells [PDF]

, 2015
BRAF inhibitors can extend progression-free and overall survival in melanoma patients whose tumors harbor mutations in BRAF. However, the majority of patients eventually develop resistance to these drugs. Here we show that BRAF mutant melanoma cells that
Baenke, Franziska, Chaneton, Barbara, Dhomen, Nathalie, Galbraith, Laura, Girotti, Maria R., Gottlieb, Eyal, Hogan, Kate, Marais, Richard, Martin, Matthew, Smith, Matthew, Tang, Haoran, Van Den Broek, Niels, Viros, Amaya   +12 more
core   +1 more source

Modifications in FLAP's second cytosolic loop influence 5‐LOX interaction, inhibitor binding, and leukotriene formation

FEBS Letters, EarlyView.
The enzyme 5‐lipoxygenase (5‐LOX) catalyzes the first step in the biosynthesis of leukotrienes (LTs) involved in inflammatory pathophysiology. After cellular stimulation, 5‐LOX translocates to the nucleus, interacting with the 5‐LOX‐activating protein (FLAP) to form LTA4 from arachidonic acid (AA).
Erik Romp, Katharina Rataj, Stefanie König, Marcia E. Newcomer, Oliver Werz, Ulrike Garscha   +5 more
wiley   +1 more source

Evaluation of Compliance With International Guidelines During the Follow-Up of Hypoparathyroidism

International Journal of Endocrinology
Conclusion: In our research, it was discovered that patients with hypoparathyroidism had low compliance rates with the guidelines. We believe that the cause of this is the inability to provide the patients with enough time in intense polyclinic ...
Beril Turan Erdogan, Sefika Burcak Polat, Caglar Keskin, Narin Nasiroglu İmga, Didem Ozdemir, Oya Topaloglu, Reyhan Ersoy, Bekir Cakir   +7 more
doaj   +1 more source

Applicability of free drug hypothesis to drugs with good membrane permeability that are not efflux transporter substrates: A microdialysis study in rats

Pharmacology Research & Perspectives, 2020
In clinical pharmacology, the free drug hypothesis has been widely applied in the interpretation of the relationship between pharmacokinetics and pharmacodynamics (PK/PD).
Chun Chen, Hongyu Zhou, Chi Guan, Huanhuan Zhang, Yingying Li, Xue Jiang, Zheng Dong, Yuanyuan Tao, Juan Du, Shuyao Wang, Teng Zhang, Na Du, Junyang Guo, Yaqiong Wu, Zehai Song, Haofei Luan, Yu Wang, Hongwen Du, Shaofeng Zhang, Chen Li, Hang Chang, Tao Wang   +21 more
doaj   +1 more source

Testosterone Deficiency Promotes Hypercholesteremia and Attenuates Cholesterol Liver Uptake via AR/PCSK9/LDLR Pathways

International Journal of Endocrinology, 2022
Background. Testosterone deficiency is reportedly correlated with an elevation of cholesterol in plasma, but the mechanism remains unclear. Our objective was to investigate the effects of testosterone deficiency on cholesterol metabolism and the ...
Yu Yuefeng, Lin Zhiqi, Chen Yi, Zhu Keyu, Wan Heng, Wang Yuying, Wang Ningjian, Yu Yuetian, Gu Xinjie, Zhang Yihao, Lu Yingli, Xia Fangzhen   +11 more
doaj   +1 more source

Hypergraph models of metabolism [PDF]

, 2014
In this paper, we employ a directed hypergraph model to investigate the extent to which environmental variability influences the set of available biochemical reactions within a living cell.
Chuzhanova, N, Crofts, JJ, Pearcy, N
core  

The thioredoxin‐like and one glutaredoxin domain are required to rescue the iron‐starvation phenotype of HeLa GLRX3 knock out cells

FEBS Letters, EarlyView.
Glutaredoxin (Grx) 3 proteins contain a thioredoxin domain and one to three class II Grx domains. These proteins play a crucial role in iron homeostasis in eukaryotic cells. In human Grx3, at least one of the two Grx domains, together with the thioredoxin domain, is essential for its function in iron metabolism.
Laura Magdalena Jordt, Manuela Gellert, Finja Zelms, Sander Bekeschus, Christopher Horst Lillig   +4 more
wiley   +1 more source