Results 131 to 140 of about 471,435 (340)

The evolution of carrying capacity in constrained and expanding tumour cell populations

open access: yes, 2015
Cancer cells are known to modify their micro-environment such that it can sustain a larger population, or, in ecological terms, they construct a niche which increases the carrying capacity of the population.
Anderson, Alexander R. A.   +1 more
core   +1 more source

Species clustering in competitive Lotka-Volterra models [PDF]

open access: yes, 2007
We study the properties of Lotka-Volterra competitive models in which the intensity of the interaction among species depends on their position along an abstract niche space through a competition kernel.
Hernandez-Garcia, Emilio   +2 more
core   +2 more sources

An evaluation of transferability of ecological niche models

open access: yesEcography, 2018
Ecological niche modeling (ENM) is used widely to study species’ geographic distributions. ENM applications frequently involve transferring models calibrated with environmental data from one region to other regions or times that may include novel ...
Huijie Qiao   +6 more
semanticscholar   +1 more source

Phocaeicola coprophilus‐Derived 6‐Methyluracil Attenuates Radiation‐Induced Intestinal Fibrosis by Suppressing the IDO1‐Kynurenine‐AHR Axis

open access: yesAdvanced Science, EarlyView.
IR‐induced dysbiosis depletes P. coprophilus and its metabolite 6‐methyluracil, leading to disinhibition of the IDO1‐Kyn‐AHR axis. This results in sustained fibroblast activation and collagen deposition, driving radiation induced intestinal fibrosis. ABSTRACT Therapeutic options for radiation‐induced intestinal fibrosis (RIF) remain limited. This study
Jiaxin Zhang   +11 more
wiley   +1 more source

Parasitic Plant–Host Interactions: Molecular Mechanisms and Agricultural Resistance Strategies

open access: yesAdvanced Science, EarlyView.
Parasitic plants devastate global agriculture through sophisticated molecular interactions with host crops. This review synthesizes current understanding of parasitic plant‐host interactions, from strigolactone‐mediated germination and haustorium formation to host defense mechanisms.
Jiayang Shi, Qi Xie, Feifei Yu
wiley   +1 more source

Gut Microbiota‐Non‐Coding RNA Axis in Immune Modulation and Disease: From Mechanisms to Clinical Translation

open access: yesAdvanced Science, EarlyView.
ABSTRACT Immune homeostasis is indispensable for preserving organismal integrity, orchestrated through complex molecular networks encompassing immune cell dynamics, microbial cues, and epigenetic regulation. Among these, the gut microbiota‐non‐coding RNA (ncRNA) axis has recently garnered substantial attention as a multifaceted modulator of host ...
Bonan Chen   +12 more
wiley   +1 more source

Ecological niche contributes to the persistence of the western × glaucous‐winged gull hybrid zone

open access: yesEcology and Evolution
Hybrid zones occur in nature when populations with limited reproductive barriers overlap in space. Many hybrid zones persist over time, and different models have been proposed to explain how selection can maintain hybrid zone stability.
Xuewen Geng, Jeremy Summers, Nancy Chen
doaj   +1 more source

Mapping the potential distribution of the schistosomiasis intermediate host Biomphalaria straminea in China

open access: yesGeospatial Health, 2018
Biomphalaria straminea is native to Brazil but has established a population in Guangdong Province China. Its potential of expanding and transmitting Schistosoma mansoni is of great concern. We seek to map S.
Jingyu Fan   +3 more
doaj   +1 more source

Mahalanobis distances and ecological niche modelling: correcting a chi-squared probability error

open access: yesPeerJ, 2019
The Mahalanobis distance is a statistical technique that can be used to measure how distant a point is from the centre of a multivariate normal distribution.
T. Etherington
semanticscholar   +1 more source

From the Gut to the Brain: Microplastic‐Associated Neurovascular Dysfunction and Implications for Stroke Risk

open access: yesAdvanced Science, EarlyView.
Chronic oral exposure to microplastics may disrupt gut microbiota homeostasis and intestinal barrier integrity, potentially engaging the gut–brain axis and systemic inflammatory responses. These alterations may be associated with impaired blood–brain barrier function, cerebral microvascular dysfunction, and enhanced endothelial inflammation, pro ...
Hongxing Wang   +5 more
wiley   +1 more source

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