Severity: Warning
Message: fopen(/var/lib/php/sessions/ci_sessionpq429b7m850r4mjd8i0gbvmirg38u8uo): Failed to open stream: No space left on device
Filename: drivers/Session_files_driver.php
Line Number: 177
Backtrace:
File: /var/www/html/index.php
Line: 316
Function: require_once
Severity: Warning
Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)
Filename: Session/Session.php
Line Number: 137
Backtrace:
File: /var/www/html/index.php
Line: 316
Function: require_once
Metagenomics has revealed hundreds of species in almost all microbiota. In a few well-studied cases, microbial communities have been observed to coordinate their metabolic fluxes. In principle, microbes can divide tasks to reap the benefits of specialization, as in human economies. However, the benefits and stability of an economy of microbial specialists are far from obvious. Here, we physically model the population dynamics of microbes that compete for steadily supplied resources. Importantly, we explicitly model the metabolic fluxes yielding cellular biomass production under the constraint of a limited enzyme budget. We find that population dynamics generally leads to the coexistence of different metabolic types. We establish that these microbial consortia act as cartels, whereby population dynamics pins down resource concentrations at values for which no other strategy can invade. Finally, we propose that at steady supply, cartels of competing strategies automatically yield maximum biomass, thereby achieving a collective optimum.
Download full-text PDF |
Source |
---|---|
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5419753 | PMC |
http://dx.doi.org/10.7554/eLife.22644 | DOI Listing |
Nicotine Tob Res
March 2025
Department of Population and Public Health Sciences, Keck School of Medicine of the University of Southern California, Los Angeles, CA, United States.
Introduction: The objective of this study was to examine the mechanisms of social influence driving e-cigarette use in adolescent social networks and differentiate between the effects of exposure to friend behavior and social norms on individual use.
Methods: Surveys on health behaviors and friendship networks from nine high schools in Southern California (N = 2,245; 48% Hispanic) were collected at three time points from Spring 2021 of grade 9, Fall 2021, and Spring 2022 of grade 10. Stochastic actor-oriented models for the co-evolution of social networks and behavior dynamics tested for friendship network social influences on e-cigarette use.
Virol J
March 2025
Department of AIDS and STD Prevention and Control, Zhejiang Provincial Center for Disease Control and Prevention, 3399 Binsheng Road, Binjiang District, Hangzhou, Zhejiang Province, 310051, P. R. China.
Background: In China, human immunodeficiency virus (HIV) poses a significant challenge to older heterosexual adults. This study explored the transmission dynamics of HIV infection among older adults in northern Zhejiang Province, China using phylogenetic analysis and transmission networks.
Methods: HIV pol sequences without any antiretroviral therapy were obtained from newly diagnosed HIV-positive patients in Huzhou between 2017 and 2022.
Trends Ecol Evol
March 2025
University of Potsdam, Department of Ecology and Ecosystem Modelling, Potsdam, Germany.
Symbiotic relationships represent prolonged physical interactions between different species and include various forms such as mutualism, commensalism, exploitation, and competition. Here, we show that the form of symbiosis may change with the densities of the symbiotic partners as they influence the costs and benefits each species experiences. In turn, the form of symbiosis is expected to influence species persistence, population dynamics, and ultimately ecosystem stability.
View Article and Find Full Text PDFMol Ecol
March 2025
Program in Public Health, University of California, Irvine, California, USA.
Anti-malaria interventions typically reduce the intensity of Plasmodium transmission, but the effects of reduced transmission on P. falciparum population biology remain unclear. Highly polymorphic microsatellite markers in P.
View Article and Find Full Text PDFCardiooncology
March 2025
Research Group Cardiovascular Diseases, GENCOR, University of Antwerp, Antwerp, Belgium.
Background: SERPINA3 recently emerged as potential prognostic biomarker in heart failure. In a population of cancer survivors with cancer therapy-related cardiac dysfunction (CTRCD) circulating SERPINA3 was elevated compared to age-matched controls. We aimed to assess the longitudinal dynamics of circulating SERPINA3 levels in patients with cancer treated with anthracycline chemotherapy (AnC) and its relation to CTRCD.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!