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2021

Новости за 06.12.2021

Multi-membrane search algorithm

Plos.org 

by Qi Song, Yourui Huang, Wenhao Lai, Tao Han, Shanyong XU, Xue Rong

This research proposes a new multi-membrane search algorithm (MSA) based on cell biological behavior. Cell secretion protein behavior and cell division and fusion strategy are the main inspirations for the algorithm. In order to verify the performance of the algorithm, we used 19 benchmark functions to compare the MSA test results with MVO, GWO, MFO and ALO. The number of iterations of each algorithm on each benchmark function is 100... Читать дальше...

Exploring the green development path of the Yangtze River Economic Belt using the entropy weight method and fuzzy-set qualitative comparative analysis

Plos.org 

by Haijuan Yan, Xiaofei Hu, Dawei Wu, Jianing Zhang

Green development is an effective way to achieve economic growth and social development in a harmonious, sustainable, and efficient manner. Although the Yangtze River Economic Belt (YREB) plays an important strategic role in China, our understanding of its spatiotemporal characteristics, as well as the multiple factors affecting its green development level (GDL), remains limited. This study used the entropy weight method (EWM) to analyze... Читать дальше...



Assessment of community support for Wolbachia-mediated population suppression as a control method for Aedes aegypti mosquitoes in a community cohort in Puerto Rico

Plos.org 

by Liliana Sánchez-González, Laura E. Adams, Rafael Saavedra, Emma M. Little, Nicole A. Medina, Chelsea G. Major, Marina Bruck, Julieanne Miranda, Coral Rosado-Santiago, Kyle Ryff, Marianyoly Ortiz, Grayson Brown, Roberto Barrera, Carmen L. Pérez-Guerra, Vanessa Rivera-Amill, Gabriela Paz-Bailey

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Neutralizing antibody responses over time in demographically and clinically diverse individuals recovered from SARS-CoV-2 infection in the United States and Peru: A cohort study

Plos.org 

by Shelly Karuna, Shuying Sue Li, Shannon Grant, Stephen R. Walsh, Ian Frank, Martin Casapia, Meg Trahey, Ollivier Hyrien, Leigh Fisher, Maurine D. Miner, April K. Randhawa, Laura Polakowski, James G. Kublin, Lawrence Corey, David Montefiori, for the HVTN 405/HPTN 1901 Study Team

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Simulations of dynamically cross-linked actin networks: Morphology, rheology, and hydrodynamic interactions

Plos.org 

by Ondrej Maxian, Raúl P. Peláez, Alex Mogilner, Aleksandar Donev

Cross-linked actin networks are the primary component of the cell cytoskeleton and have been the subject of numerous experimental and modeling studies. While these studies have demonstrated that the networks are viscoelastic materials, evolving from elastic solids on short timescales to viscous fluids on long ones, questions remain about the duration of each asymptotic regime, the role of the surrounding fluid, and the behavior of the networks on intermediate timescales. Читать дальше...

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Autonomous epithelial folding induced by an intracellular mechano–polarity feedback loop

Plos.org 

by Fu-Lai Wen, Chun Wai Kwan, Yu-Chiun Wang, Tatsuo Shibata

Epithelial tissues form folded structures during embryonic development and organogenesis. Whereas substantial efforts have been devoted to identifying mechanical and biochemical mechanisms that induce folding, whether and how their interplay synergistically shapes epithelial folds remains poorly understood. Here we propose a mechano–biochemical model for dorsal fold formation in the early Drosophila embryo, an epithelial folding event induced by shifts of cell polarity. Читать дальше...

The impact of whole genome duplications on the human gene regulatory networks

Plos.org 

by Francesco Mottes, Chiara Villa, Matteo Osella, Michele Caselle

This work studies the effects of the two rounds of Whole Genome Duplication (WGD) at the origin of the vertebrate lineage on the architecture of the human gene regulatory networks. We integrate information on transcriptional regulation, miRNA regulation, and protein-protein interactions to comparatively analyse the role of WGD and Small Scale Duplications (SSD) in the structural properties of the resulting multilayer network. Читать дальше...

Emergence and fragmentation of the alpha-band driven by neuronal network dynamics

Plos.org 

by Lou Zonca, David Holcman

Rhythmic neuronal network activity underlies brain oscillations. To investigate how connected neuronal networks contribute to the emergence of the α-band and to the regulation of Up and Down states, we study a model based on synaptic short-term depression-facilitation with afterhyperpolarization (AHP). We found that the α-band is generated by the network behavior near the attractor of the Up-state. Coupling inhibitory and excitatory networks by reciprocal connections... Читать дальше...

Engaging biological oscillators through second messenger pathways permits emergence of a robust gastric slow-wave during peristalsis

Plos.org 

by Md Ashfaq Ahmed, Sharmila Venugopal, Ranu Jung

Peristalsis, the coordinated contraction—relaxation of the muscles of the stomach is important for normal gastric motility and is impaired in motility disorders. Coordinated electrical depolarizations that originate and propagate within a network of interconnected layers of interstitial cells of Cajal (ICC) and smooth muscle (SM) cells of the stomach wall as a slow-wave, underly peristalsis. Normally, the gastric slow-wave oscillates with a single period and uniform rostrocaudal lag... Читать дальше...

In silico identification of potential calcium dynamics and sarcomere targets for recovering left ventricular function in rat heart failure with preserved ejection fraction

Plos.org 

by Stefano Longobardi, Anna Sher, Steven A. Niederer

Heart failure with preserved ejection fraction (HFpEF) is a complex disease associated with multiple co-morbidities, where impaired cardiac mechanics are often the end effect. At the cellular level, cardiac mechanics can be pharmacologically manipulated by altering calcium signalling and the sarcomere. However, the link between cellular level modulations and whole organ pump function is incompletely understood. Our goal is to develop and... Читать дальше...

Extracting multi-way chromatin contacts from Hi-C data

Plos.org 

by Lei Liu, Bokai Zhang, Changbong Hyeon

There is a growing realization that multi-way chromatin contacts formed in chromosome structures are fundamental units of gene regulation. However, due to the paucity and complexity of such contacts, it is challenging to detect and identify them using experiments. Based on an assumption that chromosome structures can be mapped onto a network of Gaussian polymer, here we derive analytic expressions for n-body contact probabilities (n > 2) among chromatin... Читать дальше...


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