Results 81 to 90 of about 18,269 (245)

Effects of euthanasia method on stable‐carbon and stable‐nitrogen isotope analysis for an ectothermic vertebrate [PDF]

Rapid Communications in Mass Spectrometry, 2013
RATIONALE Stable isotope analysis is a critical tool for understanding ecological food webs; however, results can be sensitive to sample preparation methods. To limit the possibility of sample contamination, freezing is commonly used to euthanize invertebrates and preserve non‐lethal samples from vertebrates ...
openaire   +2 more sources

Identification of an Osteochondral Erosion Process in Gout Driven by Fibrinogen‐Integrin Activation and Local MSU Crystallization

Advanced Science, EarlyView.
Cartilage injury promotes local fibrinogen deposition, which accelerates monosodium urate crystallization and activates integrin‐mediated matrix‐degradation. This self‐amplifying cycle drives gout‐related cartilage erosion. Disrupting fibrinogen deposition or restoring the cartilage barrier could interrupt this vicious cycle.
Hanlin Xu, Simin Bi, Zhechen Liu, Xiaofeng Zhou, Hengwei Qin, Nicola Dalbeth, Minbiao Ji, Yinghui Hua   +7 more
wiley   +1 more source

Psychological Stress Associated Bile Acid Reprogramming Promotes Hepatocellular Carcinoma Progression

Advanced Science, EarlyView.
Depression is increasingly recognized as a risk factor for chronic diseases, yet its biological impact on cancer remains unclear. Using data from more than 490 000 participants across three international cohorts, we show that depression significantly increases the risk of liver cancer.
Ruijiang Zeng, Mengmeng Wang, Kang Wang, Zhuo Xing, Yulong Hong, Tongtong Li, Geng Zong, Chong Yang, Dan Zhang, Zhangling Chen, Xin Jin   +10 more
wiley   +1 more source

PFKFB4 Deubiquitination by USP10 Enhances Fumarate Metabolism to Orchestrate the KDM1A/Rad51 Axis and Confer Radioresistance in Lung Cancer

Advanced Science, EarlyView.
USP10 binds to and stabilizes PFKFB4, enhancing glycolytic ATP production, which activates the urea cycle and elevates fumarate. This inhibits histone demethylase KDM1A, leading to increased H3K4me1 enrichment at the Rad51 promoter and direct activation of Rad51 transcription, which confers lung cancer radioresistance. The PFKFB4 inhibitor 5MPN targets
Yunshang Chen, Zilong Wu, Yongqiang Yang, Ruoxin Fang, Huichan Xue, Rui Zhou, Gang Wu, Xiaohua Jie   +7 more
wiley   +1 more source

Enhanced Antibacterial Properties of Lyotropic Liquid Crystalline Nanoparticles via Curvature Modulation

Advanced Science, EarlyView.
Lipid nanostructured particles with increasing negative Gaussian curvature progress from vesicles to P‐cubosomes and D‐cubosomes. This curvature hierarchy enhances interaction with bacterial membranes, promotes membrane remodeling and leakage, and potentiates daptomycin activity against MRSA.
Xiangfeng Lai, Shuhong Wang, Chenguang Ding, Xenia Kostoulias, Anton P. Le Brun, Hsien‐Yi Hsu, Jhih‐Hang Jiang, Yajun Wang, Richard A. Strugnell, Anton Y. Peleg, Hsin‐Hui Shen   +10 more
wiley   +1 more source

Adaptive Cu Reconstruction in Heterostructure Drives High‐Rate Nitrate‐to‐Ammonia Conversion

Advanced Science, EarlyView.
An adaptively reconstructed Cu/CoOX heterojunction, featuring a surface‐localized, hydroxyl‐rich oxidized Cu species, forms in situ from a CuO/CoOX (Co1Cu9OX) pre‐catalyst during electrochemical nitrate reduction. The self‐adaptive reconstruction and the incorporation of heterostructure regulate nitrogen‐containing intermediate adsorption and *H supply,
Chunyu Yuan, Saikat Bolar, Yongzheng Zhang, Akitaka Ito, Tatsuhiko Ohto, Takeshi Fujita   +5 more
wiley   +1 more source

Neanderthals, hypercarnivores, and maggots: Insights from stable nitrogen isotopes

Science Advances
Reconstructions of Eurasian Neanderthal diets based on stable nitrogen isotope ratios (δ 15 N) typically place hominins at the top of the food web, together with, or above, hypercarnivores, such as lions and wolves.
Melanie M. Beasley, Julie J. Lesnik, John D. Speth   +2 more
openaire   +2 more sources

An Artificially Selected Cytokinin‐Pathway Transcription Factor Balances Soybean Yield and Pathogen Resistance

Advanced Science, EarlyView.
A cytokinin pathway transcription factor, RR2b, was artificially selected during soybean domestication and improvement based on its differential transcriptional activity, which correlates with ATT repeat polymorphisms in its promoter. RR2b balances yield and defense by fine‐tuning its expression level and offers a promising target for decoupling trade ...
Qun Ma, Yaqing Chen, Yiwen Gao, Xueting Hu, Qun Yang, Yucheng Liu, Peiyong Xin, Jijun Yan, Jinfang Chu, Lei Li, Zhixi Tian, Bo Ren   +11 more
wiley   +1 more source

From open landscapes to forest refugia: Human encroachment and climate change as drivers of red deer (Cervus elaphus) niche shifts over 21,000 years

Quaternary Environments and Humans
The red deer (Cervus elaphus) is one of the few remnant species of the European Pleistocene megafauna. It occupies a wide range of habitats across the Holarctic, yet the factors shaping the species’ realized ecological niche over time remain poorly ...
Maciej Sykut, Jens-Christian Svenning, Alejandro Gloria Ordonez, Matthew Roy Kerr, Felix Riede   +4 more
doaj   +1 more source

Stable isotopes predict reproductive performance of European starlings breeding in anthropogenic environments

Ecosphere, 2016
Understanding reproductive performance in ecologically impoverished vs. more sustained anthropogenic habitats is critical to assess population health status and to develop land use and conservation management strategies.
Elizabeth Yohannes, Helga Gwinner, Raymond W. Lee, Hubert Schwabl   +3 more
doaj   +1 more source