FAM43A coordinates mtDNA replication and mitochondrial biogenesis in response to mtDNA depletion.

Mitochondrial retrograde signaling (MRS) pathways relay the functional status of mitochondria to elicit homeostatic or adaptive changes in nuclear gene expression. Budding yeast have "intergenomic signaling" pathways that sense the amount of mitochondrial DNA (mtDNA) independently of oxidative phosphorylation (OXPHOS), the primary function of genes encoded by mtDNA. However, MRS pathways that sense the amount of mtDNA in mammalian cells remain poorly understood.

Exploring the popularity of raw meat-based diets for dogs and cats: A cross-sectional opinion survey in Spain.

Background: Research on the general public's knowledge and usage patterns of pet food, particularly regarding raw meat-based diets (RMBDs), is limited in many countries, including Spain.

Methods: An anonymous cross-sectional web-based survey was conducted to assess the Spanish population's understanding and perceptions of RMBDs for cats and dogs.

Results: Of the 712 respondents, 46.

Pros and Cons of Human Brain Organoids to Study Alzheimer's Disease.

There is increasing pressure for researchers to reduce their reliance on animals, particularly in early-stage research. The main reason for that change arises from the different biological behavior of humans that leads to frequent failure of translating data from bench to bed. The advent of organoid technology ten years ago, along with the feasibility of obtaining brain organoids in most laboratories, has created considerable expectations not exempting frustration.

Revisiting Dynamics of Quantum Causal Structures-When Causal Order Evolve?

Recently, there has been substantial interest in studying the dynamics of quantum theory beyond that of states, in particular, the dynamics of channels, measurements, and higher-order transformations. Castro-Ruiz et al. pursues this using the process-matrix formalism, together with a definition of the possible dynamics of such process matrices, and focusing especially on the question of evolution of causal structures.