Results 131 to 140 of about 11,796 (253)

Chordality Properties and Hyperbolicity on Graphs

The Electronic Journal of Combinatorics, 2016
Let $G$ be a graph with the usual shortest-path metric. A graph is $\delta$-hyperbolic if for every geodesic triangle $T$, any side of $T$ is contained in a $\delta$-neighborhood of the union of the other two sides. A graph is chordal if every induced cycle has at most three edges.
openaire   +3 more sources

Oncogenic driver and therapeutic target: Prolactin signalling axis in retroperitoneal sarcoma

Clinical and Translational Medicine, Volume 16, Issue 5, May 2026.
Retroperitoneal sarcoma cells can secrete prolactin into the bloodstream, inducing hyperprolactinaemia, which subsequently triggers metabolic reprogramming, such as glucose metabolism. SOX4 can function as a transcription factor that facilitates PRL transcription.
Fu'an Xie, Lingwei Gu, Kunrong Yang, Shuai Wang, Mengmeng Xiao, Guangting Yan, Quan Zhang, Rubing Liang, Aobo Zhuang, Zhe Xi, Yujia Niu, Yanhua Chen, Xiaogang Xia, Linlin Qu, Bin Zhao, Weibing Li, Ting Wu, Chundong Yu, Chenghua Luo, Houzhao Wang, Lanlan Lian, Wengang Li   +21 more
wiley   +1 more source

Efficient Minus and Signed Domination in Proper Interval Graphs with a Totally Unimodular Structure

Axioms
The efficient minus domination problem (EMDP) and the efficient signed domination problem (ESDP) are domination-type problems in graphs. These problems are known to be NP-complete on chordal graphs and polynomially solvable on chain interval graphs ...
Chuan-Min Lee
doaj   +1 more source

Excitatory neurons and astrocytes‐specific dysregulation and aberrant interactions are vulnerable to FCDI as suggested by single‐cell spatial transcriptomics

Clinical and Translational Medicine, Volume 16, Issue 5, May 2026.
• Excitatory neurons and astrocytes show marked alterations in the single‐cell spatial transcriptomic atlas of epileptogenic cortex from patients with focal cortical dysplasia type I (FCDI). • The CBLN2high excitatory neuron subtype may be associated with neuronal hyperexcitability and cortical development in FCDI.
Yaqian Zhang, Qihang Zou, Yingying Liu, Yinchao Li, Yubao Fang, Tiancai Huang, Jiabin Yu, Lisen Sui, Dezhi Cao, Liemin Zhou   +9 more
wiley   +1 more source

Differential sensitivity of midline development to mitosis during and after primitive streak extension

Developmental Dynamics, Volume 255, Issue 5, Page 486-502, May 2026.
Abstract Background Midline establishment is a fundamental process during early embryogenesis for Bilaterians. Midline morphogenesis in non‐amniotes can occur without mitosis, through Planar Cell Polarity (PCP) signaling. By contrast, amniotes utilize both cellular processes for developing the early midline landmark, the primitive streak (PS).
Zhiling Zhao, Rieko Asai, Takashi Mikawa
wiley   +1 more source

Urinary Extracellular Vesicles for High‐Precision Bladder Cancer Subtyping and Prognosis

Journal of Extracellular Biology, Volume 5, Issue 5, May 2026.
ABSTRACT Bladder cancer (BCa) exhibits molecular heterogeneity that complicates early diagnosis and prognosis, and drives confounding clinical outcomes. Non‐muscle invasive and muscle‐invasive subtypes, especially for intermediate to high grade, carry a 25%–50% progression‐free survival rate, underscoring the need for high‐precision prognostic strategy.
Zachary F. Greenberg, Tarun Hutchinson, Jonathan Kahn, Kiley S. Graim, Padraic O'Malley, Mei He   +5 more
wiley   +1 more source

AlphaFold‐driven discovery of oxysterol‐binding protein‐related protein‐phosphoinositide 3‐, 4‐, and 5‐phosphatase interactions using new generation confidence scores

Protein Science, Volume 35, Issue 5, May 2026.
Abstract Non‐vesicular lipid transport contributes to the regulation of membrane composition and organelle function at membrane contact sites. OSBP‐related proteins (ORPs) are central to this process, yet their interaction networks remain incompletely defined. Here, we systematically screened potential interactions between ORPs and phosphoinositide 3‐,
Filippo Dall'Armellina, Sylvie Urbé, Daniel J. Rigden   +2 more
wiley   +1 more source

Exploring Dominating Functions and Their Complexity in Subclasses of Weighted Chordal Graphs and Bipartite Graphs

Mathematics
Domination problems are fundamental problems in graph theory with diverse applications in optimization, network design, and computational complexity.
Chuan-Min Lee
doaj   +1 more source

Global Analysis of Shallow Underwater Fish Observation Research: 70 Years of Progress, Persistent Geographic Biases and a Path Forward

Fish and Fisheries, Volume 27, Issue 3, Page 607-626, May 2026.
ABSTRACT Marine ecosystems are increasingly threatened by overfishing, pollution, coastal development and climate change, underscoring the need for long‐term, representative information on key fish populations and habitats to inform management and policy.
Angus John van Wyk, Rick D. Stuart‐Smith, Jordan S. Goetze, Eva Maire, Elodie Heyns‐Veale, Kaylee Smit, Tim J. Langlois, M. Aaron MacNeil, Alejandro Pérez‐Matus, Amanda T. Lombard, Ana Carolina, Christy Semmens, Ella Clausius, Fernanda A. Rolim, Jonathan S. Lefcheck, Jacquomo Monk, Joanna K. Schmid, Katherine Tattersall, Laura Ghigliotti, Luther Adams, Melita Samoilys, Pascale Chabanet, Paul Whomersley, Peter Walsh, Reiji Masuda, Russell Brainard, Anthony Bernard   +26 more
wiley   +1 more source

Entrywise transforms preserving matrix positivity and nonpositivity

Journal of the London Mathematical Society, Volume 113, Issue 5, May 2026.
Abstract We characterize real and complex functions which, when applied entrywise to square matrices, yield a positive definite matrix if and only if the original matrix is positive definite. We refer to these transformations as sign preservers. Compared to the classical work on entrywise preservers by Schoenberg and others, we completely resolve this ...
Dominique Guillot, Himanshu Gupta, Prateek Kumar Vishwakarma, Chi Hoi Yip   +3 more
wiley   +1 more source