Results 81 to 90 of about 63,819 (225)

Costs of Chronic Waterborne Zinc Exposure and the Consequences of Zinc Acclimation on the Gill/Zinc Interactions of Rainbow Trout in Hard and Soft Water [PDF]

open access: yes, 1999
Juvenile rainbow trout were exposed to zinc in both moderately hard water (hardness 5 120 mg CaCO3/L, pH = 8.0, Zn = 150 μg/L or 450 μg/L) and soft water (hardness = 20 mg CaCO3/L, pH = 7.2, Zn = 50 μg/L or 120 μg/L) for 30 d.
Alsop, Derek H.   +3 more
core   +2 more sources

Discovery and Evaluation of Cadmium‐Adapted Daphnia pulex Genotypes in a Region of Historical Mining Reveals Adaptation Protects the Germline From Cadmium‐Induced Mutations

open access: yesMolecular Ecology, Volume 35, Issue 9, May 2026.
ABSTRACT Exposure to chemical pollutants can alter the rate and genome‐wide distribution of germline mutations. However, studies measuring the effects of chemical exposure on mutation rates and spectra have not considered the ecological and evolutionary backgrounds of the studied genotypes, which could influence the rates and patterns of germline ...
Nathan Keith   +6 more
wiley   +1 more source

Analysis of metallothionein gene structure in sterlet (Acipenser ruthenus) during copper exposure

open access: yes‬‭Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2017
Aquatic organisms present, not only simple sources of accumulated metal, but can interact with metals, altering their toxicity. Due to exposition of biosphere with metals, organisms have developed various defense mechanisms to protect themselves against ...
A Hadian; Sh Jamili email ; M Pourkazemi; A Mashinchian; M Yarmohammadi
doaj  

Zinc Supplementation Forms Influenced Zinc Absorption and Accumulation in Piglets

open access: yesAnimals, 2020
The study aimed at determining the effect of different zinc (Zn) supplementation forms on Zn accumulation, activities of Zn-containing enzymes, gene expression of metallothionein (MT), and Zn transporters in piglets.
Fen-Fen Liu   +5 more
doaj   +1 more source

Transcriptional regulation of copper metabolism genes in the liver of fetal and neonatal control and iron-deficient rats [PDF]

open access: yes, 2014
Acknowledgments The authors’ work is supported by Scottish Government (Rural and Environmental Scientific and Analytical Services). We are grateful to Ms Val Stevens for analytical and technical assistance and to the Biological Resource Facility staff ...
Hayes, Helen   +3 more
core   +2 more sources

An atlas of plant selenium metabolism

open access: yesNew Phytologist, Volume 250, Issue 4, Page 2041-2060, May 2026.
Summary Selenium (Se) is not only a rare and toxic element but also an essential micronutrient for humans and animals that is often in short supply. Terrestrial plants do not require Se, but it can have growth‐promoting or negative effects, depending on the exposure level.
Jeroen van der Woude   +3 more
wiley   +1 more source

Study of interrelations between resistance to cisplatin and composition of low molecular weight thiols in murine leukemia L1210 cell lines

open access: yesБіологічні студії, 2012
Cis-dichlorodiammineplatinum (II), commonly known as cisplatin, is a widely used anticancer drug. However, the therapeutic efficacy of the drug is limited due to various dose-limiting side effects and development of acquired resistance. The resistance of
H. Falfushynska   +3 more
doaj   +1 more source

A four-helix bundle stores copper for methane oxidation [PDF]

open access: yes, 2015
Methane-oxidising bacteria (methanotrophs) require large quantities of copper for the membrane-bound (particulate) methane monooxygenase (pMMO). Certain methanotrophs are also able to switch to using the iron-containing soluble MMO (sMMO) to catalyse ...
A Badarau   +65 more
core   +1 more source

OsMT2b Regulates Pollen Development and ROS Homeostasis in a Photoperiod‐Dependent Manner

open access: yesPlant Biotechnology Journal, Volume 24, Issue 5, Page 3051-3064, May 2026.
ABSTRACT Reactive oxygen species (ROS) are signalling molecules that promote programmed cell death in animal and plant systems. However, their role in rice (Oryza sativa L.) anther development is unclear. In this study, we show that lower transcript levels of the metallothionein gene OsMT2b in japonica rice plants obtained by RNA interference (RNAi ...
Ying He   +9 more
wiley   +1 more source

The Mercury-Tolerant Microbiota of the Zooplankton Daphnia Aids in Host Survival and Maintains Fecundity under Mercury Stress. [PDF]

open access: yes, 2019
Many aquatic organisms can thrive in polluted environments by having the genetic capability to withstand suboptimal conditions. However, the contributions of microbiomes under these stressful environments are poorly understood.
De Guzman, Brandon E   +3 more
core   +1 more source

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