Physiology

Neuronal detection triggers systemic digestive shutdown in response to adverse food sources in Caenorhabditis elegans

1. Yating Liu
2. Guojing Tian
3. Ziyi Wang
4. Junkang Zheng
5. Huimin Liu
6. Sucheng Zhu
7. Zhao Shan
8. Bin Qi

• Curated by eLife

  eLife Assessment

  This important study investigates how signals from the nervous system can influence the response to different food sources. To demonstrate the role of specific neuronal and intestinal regulators in sensing food quality and modulating digestion, the authors present evidence through a combination of genetic screening, RNA-seq analysis, and functional studies. These findings shed light on an adaptive strategy to integrate food perception with physiological responses, with a mix of solid and convincing evidence supporting the work.

Reviewed by eLife

Blood pressure variability compromises vascular function in middle-aged mice

1. Perenkita J Mendiola
2. Philip O'Herron
3. Kun Xie
4. Michael W Brands
5. Weston Bush
6. Rachel E Patterson
7. Valeria Di Stefano
8. Jessica A Filosa

• Curated by eLife

  eLife Assessment

  This is an important study that demonstrates that blood pressure variability impairs myogenic tone and diminishes baroreceptor reflex. The study also provides evidence that blood pressure variability blunts functional hyperemia and contributes to cognitive decline. The evidence is compelling whereby the authors use appropriate and validated methodology in line with or more rigorous than the current state-of-the-art.

Reviewed by eLife

The hypoxic response extends lifespan through a bioaminergic and peptidergic neural circuit

1. Elizabeth S Kitto
2. Shijiao Huang
3. Mira Bhandari
4. Cassie Tian
5. Rebecca L Cox
6. Safa Beydoun
7. Emily Wang
8. Danielle Shave
9. Hillary A Miller
10. Sarah A Easow
11. Ella Henry
12. Megan L Schaller
13. Scott F Leiser

• Curated by eLife

  eLife Assessment

  This fundamental study identifies specific neural mechanisms through which HIF-1 signaling in ADF serotonergic neurons extends lifespan in C. elegans, revealing that downstream signaling in multiple types of neurons, as well as other neuromodulators like GABA, tyramine, and NLP-17, is required for this effect. The strength of the evidence is largely convincing, as the authors establish the necessity and causality of key neuronal components using multiple genetic tools and functional dissection in a well-validated model organism.

Reviewed by eLife

Loss of the alternative calcineurin variant CnAβ1 enhances brown adipocyte differentiation and drives metabolic overactivation through FoxO1 activation

1. Elísabet Bello-Arroyo
2. Blanca Rubio
3. Alfonso Mora
4. Marina López-Olañeta
5. Jesús M. Gómez-Salinero
6. Laura Ramos
7. Carlos G. Sánchez-Cabezudo
8. Emilio Camafeita
9. Lorena Cusso
10. Manuel Desco
11. Nolwenn Joffin
12. Johanne Le Coq
13. Jasminka Boskovic
14. Kathryn A. McGurk
15. James S. Ware
16. Paul J. R. Barton
17. Jesús Vázquez
18. Philipp E. Scherer
19. Guadalupe Sabio
20. María Victoria Gómez-Gaviro
21. Enrique Lara-Pezzi

Reviewed by Review Commons

Transient hypoxia followed by progressive reoxygenation is required for efficient skeletal muscle repair through Rev-ERBα modulation

1. Marie Quétin
2. Audrey Der Vartanian
3. Christelle Dubois
4. Juliette Berthier
5. Marine Ledoux
6. Stéphanie Michineau
7. Bernadette Drayton-Libotte
8. Athanassia Sotiropoulos
9. Frédéric Relaix
10. Marianne Gervais

Reviewed by Review Commons

Probing relaxed myosin states in hypertrophic cardiomyopathy by second harmonic-generation microscopy

1. Giulia Arecchi
2. Marica Dente
3. Weikang Ma
4. Beatrice Scellini
5. Nicoletta Piroddi
6. Marina Scardigli
7. Jingyuan Yu
8. Jing Zhao
9. Riccardo Cicchi
10. Ryo Kinegawa
11. Caroline Muellenbroich
12. Corrado Poggesi
13. Cecilia Ferrantini
14. Thomas C Irving
15. Michael Regnier
16. Leonardo Sacconi
17. Chiara Tesi

• Curated by eLife

  eLife Assessment

  Arecchi et al. demonstrate that polarized second-harmonic generation microscopy can be used to probe the ON/OFF states of myosin in both permeabilized and intact muscle, making this key measurement accessible to a greater number of labs. This has the potential to help with the study of disease-causing mutations and our understanding of drug function. The methodology is well defined, and the results are important; however, whilst this is overall a convincing study, there are some limitations to the interpretation of the data.

Reviewed by eLife

Cellular characterization of the mouse collecting lymphatic vessels reveals that lymphatic muscle cells are the innate pacemaker cells

1. Scott D Zawieja
2. Grace A Pea
3. Sarah E Broyhill
4. Advaya Patro
5. Karen H Bromert
6. Charles E Norton
7. Hae Jin Kim
8. Sathesh Kumar Sivasankaran
9. Min Li
10. Jorge A Castorena-Gonzalez
11. Bernard T Drumm
12. Michael J Davis

• Curated by eLife

  eLife Assessment

  This manuscript aims to identify the pacemaker cells in the lymphatic collecting vessels - the cells that initiate the autonomous action potentials and contractions needed to drive lymphatic pumping. Through the exemplary use of existing approaches (genetic deletions and cytosolic calcium detection in multiple cell types), the authors convincingly determine that lymphatic muscle cells are the origin of the action potential that triggers lymphatic contraction. The inclusion of scRNAseq and membrane potential data enhances a tremendous study. This fundamental discovery establishes a new standard for the field of lymphatic physiology.

Reviewed by eLife

Cell-autonomous and non-cell-autonomous effects of Arginase 2 on cardiac aging

1. Duilio M Potenza
2. Xin Cheng
3. Guillaume Ajalbert
4. Andrea Brenna
5. Marie-Noelle Giraud
6. Aurelien Frobert
7. Stephane Cook
8. Kirsten D Mertz
9. Zhihong Yang
10. Xiu-Fen Ming

• Curated by eLife

  eLife Assessment

  This study provides fundamental information on how Arg-II participates in cardiac aging. The phenotypic data provide convincing evidence of non-cell-autonomous contributions to aging-related pathologies. Overall, the study highlights the importance of intercellular signaling in maintaining cardiac health during aging.

Reviewed by eLife

TRPV4 activation by TGFβ2 enhances cellular contractility and drives ocular hypertension

1. Christopher Nass Rudzitis
2. Monika Lakk
3. Ayushi Singh
4. Sarah N Redmon
5. Denisa Kirdajová
6. Yun-Ting Tseng
7. Michael L De Ieso
8. W Daniel Stamer
9. Samuel Herberg
10. David Krizaj

• Curated by eLife

  eLife Assessment

  This fundamental work extends our understanding of the role of TGFβ2 as a modulator of mechanosensing in the eye and identifies the TRPV4 ion channel as a common regulator of Trabecular Meshwork (TM) contractility and pathological OHT and the data and evidence provided are convincing. This work will clearly be of interest to researchers investigating the role of mechanosensors in the TM and may underpin future research into treatments that aim to lower intra ocular pressure. This work will additionally be of interest to the growing field of researchers investigating the regulation of force sensing via ion channels and their roles in health and disease, in particular the ion channel TRPV4.

Reviewed by eLife

A whole-animal phenotypic drug screen identifies suppressors of atherogenic lipoproteins

1. Daniel J Kelpsch
2. Liyun Zhang
3. James H Thierer
4. Kobe Koren
5. Urmi Kumar
6. Yuki Lin
7. Monica R Hensley
8. Mira Sohn
9. Jun O Liu
10. Thomas Lectka
11. Jeff S Mumm
12. Steven A Farber

• Curated by eLife

  eLife Assessment

  In this important study, the authors have performed a zebrafish drug screen to identify suppressors of atherogenic lipoproteins. They utilize a well-established LipoGlo assay to find molecules that modulate these lipoproteins, identifying 49 potential hits. They perform some validation experiments, including studies linking enoxolone to its likely inhibitory effect on a specific transcription factor, HNF4alpha. Overall, the results are convincing and robust, and will open up new areas of exploration for those investigators interested in in vivo lipid biology.

Reviewed by eLife