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Biology subjects

Rathor, L.

Publications and source records attributed to Rathor, L..

2 recordsLinked to original sources

Bisphenol TMC disturbs mitochondrial activity and biogenesis, reducing lifespan and healthspan in the nematode Caenorhabditis elegans

Rising concerns about Bisphenol A (BPA) toxicity have prompted the search for safer alternatives. However, concerns persist regarding the safety of replacements like bisphenol TMC (BPTMC), a rapidly emerging BPA substitute. Utilizing the in vivo model organism Caenorhabditis elegans (C. elegans), whose shared genes mirror human biology, we aim to unveil the potential toxicity of BPTMC on a live animal. C. elegans exposed to 1 mM BPTMC exhibited developmental delays, reduced reproduction, and diminished longevity. Furthermore, an investigation into mortality at various animal stages, oxidative stress, and thermal stress revealed additional compromised toxicity. Notably, exposure to BPTMC resulted in mitochondrial abnormalities, including reduced oxygen consumption, lowered mitochondrial membrane potential, and decreased ATP levels. Additionally, BPTMC increased ROS levels but decreased mitochondrial population. Transcriptome analysis revealed that BPTMC induces alterations in the expression of genes associated with mitochondrial biogenesis. Our findings raise crucial concerns about BPTMC as a safe BPA alternative. The observed widespread toxicity across key life stages suggests a need for further investigation into the potential toxicity of BPTMC on human health and environmental consequences.

pharmacology and toxicology↗

Mitochondrial stress in GABAergic neurons non-cell autonomously regulates organismal health and aging

Mitochondrial stress within the nervous system can trigger non-cell autonomous responses in peripheral tissues. However, the specific neurons involved and their impact on organismal aging and health have remained incompletely understood. Here, we demonstrate that mitochondrial stress in {gamma}-aminobutyric acid-producing (GABAergic) neurons in Caenorhabditis elegans (C. elegans) is sufficient to significantly alter organismal lifespan, stress tolerance, and reproductive capabilities. This mitochondrial stress also leads to significant changes in mitochondrial mass, energy production, and levels of reactive oxygen species (ROS). DAF-16/FoxO activity is enhanced by GABAergic neuronal mitochondrial stress and mediates the induction of these non-cell-autonomous effects. Moreover, our findings indicate that GABA signaling operates within the same pathway as mitochondrial stress in GABAergic neurons, resulting in non-cell-autonomous alterations in organismal stress tolerance and longevity. In summary, these data suggest the crucial role of GABAergic neurons in detecting mitochondrial stress and orchestrating non-cell-autonomous changes throughout the organism.

genetics↗