The hypothesis that exposure to certain environmental chemicals during early life stages may disrupt reproduction across multiple non-exposed generations has significant implications for understanding disease etiology and adverse outcomes. We demonstrate here reproductive multi and transgenerational effects, at environmentally relevant levels, of one of the most prescribed human pharmaceuticals, simvastatin, in a keystone species, the amphipod Gammarus locusta. The transgenerational findings has major implications for hazard and risk assessment of pharmaceuticals and other contaminants of emerging concern given that transgenerational effects of environmental chemicals are not addressed in current hazard and risk assessment schemes. Considering that the mevalonate synthesis, one of the key metabolic pathways targeted by simvastatin, is highly conserved among metazoans, these results may also shed light on the potential transgenerational effects of simvastatin on other animals, including humans.
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http://dx.doi.org/10.1016/j.envint.2020.106020 | DOI Listing |
Epigenetics
December 2025
Department of Developmental, Molecular and Chemical Biology, Tufts University School of Medicine, Boston, MA, USA.
The effects of chronically stressing male mice can be transmitted across generations by stress-specific changes in their sperm miRNA content, which induce stress-specific phenotypes in their offspring. However, how each stress paradigm alters the levels of distinct sets of sperm miRNAs is not known. We showed previously that exposure of male mice to chronic social instability (CSI) stress results in elevated anxiety and reduced sociability specifically in their female offspring across multiple generations because it reduces miR-34c levels in sperm of stressed males and their unstressed male offspring.
View Article and Find Full Text PDFComp Biochem Physiol C Toxicol Pharmacol
January 2025
Department of Forensic Toxicology, School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China; Guangzhou Key Laboratory of Forensic Multi-Omics for Precision Identification, School of Forensic Medicine, Southern Medical University, Guangzhou 510515, China. Electronic address:
Microplastics (MPs) are ubiquitous environmental pollutants that have garnered significant attention due to their small particle size, resistance to degradation and large specific surface area, which makes it easy to adsorb various pollutants, particularly heavy metals. Arsenic (As), a common metal poisons, poses significant risks due to its widespread industrial use. When MPs and As co-exist in the environment, they can exert combined toxic effects on organisms, affecting various systems, including the nervous system.
View Article and Find Full Text PDFFam Process
March 2025
Couple and Family Therapy Program, Alliant International University, Irvine, California, USA.
The phenomena of father's absence and the disruption of a family unit due to social justice issues like incarceration and mental health/substance misuse challenges are widely documented, and their effects on the whole family are well established in the literature. This paper specifically examines how systemic inequities like racism contribute to destructive entitlements that can occur transgenerationally within families affected by father's absence. The consideration of racial trauma is crucial, as father's absence and family disruption are not limited to any one racial or ethnic group, but the effects are often exacerbated for families of color due to the intersecting impacts of systemic racism.
View Article and Find Full Text PDFNanoImpact
January 2025
Géosciences Rennes, CNRS/Université Rennes, 263 av. Général Leclerc, 35000 Rennes, France.
Nanoplastics (NPs) are gaining increasing attention due to their widespread distribution and potential environmental and biological impacts. Spanning a variety of ecosystems - from soils and rivers to oceans and polar ice - NPs interact with complex biological and geochemical processes, posing risks to organisms across multiple trophic levels. Despite their growing presence, understanding the behavior, transport, and toxicity of nanoplastics remains challenging due to their diverse physical and chemical properties as well as the heterogeneity of environmental matrices.
View Article and Find Full Text PDFPsychol Trauma
January 2025
Department of Psychology, University of Alabama at Birmingham.
Objective: Given the potential impact on brain development and social issues related to trauma, better understanding and attending to transgenerational trauma (TT) are necessary. Typically, specific groups are examined when studying TT, which limits research on universal aspects. The present study presents qualitative data from a college sample of emerging adults between the ages of 18 and 23.
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