Reposted by Alexander Jaisfranz @franzanth.bsky.social · 04/09/2025I reread this over and over again and this absolutely breaks my brain 815138
Reposted by Alexander JaisEuropean Association for the Study of Diabetes @easdnews.bsky.social · 12/08/2025🧠Meet Dr Alexander Jais ( @www.helmholtz-munich.de ), #EFSD/@novonordiskfond Future Leaders Awardee. Don't miss his presentation on sucrose-responsive neurons & glucose metabolism at the EFSD/NNF Future Leaders Symposium at #EASD2025: 📅Thurs, 18 Sept 2025 | 🕛12:45 CEST 📖 doi.org/10.1016/j.is... 075
Alexander Jais @jaislab.bsky.social · 11/08/2025Brain lithium levels drop early in AD before symptoms fully emergerdcu.beLithium deficiency and the onset of Alzheimer’s diseaseNature - Lithium has an essential role in the brain and is deficient early in Alzheimer’s disease, which can be recapitulated in mice and treated with a novel lithium salt that restores the... 032
Reposted by Alexander JaisNature Metabolism @natmetabolism.nature.com · 03/07/2025ICYMI:bit.lyWhen gut fibroblasts feed epithelial cells to deathNature Metabolism, Published online: 26 June 2025; doi:10.1038/s42255-025-01315-9Epithelial cell death driven by oxidative stress is a hallmark of inflammatory bowel disease (IBD), but the upstream triggers are unclear. A new study reveals that fibroblast-derived lipids enriched with polyunsaturated fatty acids induce epithelial ferroptosis. Genetic or pharmacological inhibition of fibroblast ACSL4 alleviates intestinal inflammation and injury in IBD models. 022
Alexander Jais @jaislab.bsky.social · 26/06/2025Congratulations 🎉 New iScience paper by PhD student Stephanie Puente‑Ruiz: The non-classical opioid peptide N/OFQ promotes macrophage recruitment and metabolic inflammation www.cell.com/iscience/ful...cell.comB cell-derived nociceptin/orphanin FQ contributes to impaired glucose tolerance and insulin resistance in obesityBiological sciences; Endocrinology; Natural sciences; Physiology 010
Reposted by Alexander JaisDaniel Drucker @danieljdrucker.bsky.social · 23/06/2025The biology of eating disorders www.nature.com/articles/s41...nature.comExamining the biological causes of eating disorders to inform treatment strategies - Nature Reviews NeuroscienceRecent years have seen a growth in our understanding of the biological drivers of eating disorders and their interactions with environmental and psychosocial factors. Foldi and Griffiths consider how ... 087
Reposted by Alexander JaisLex Kravitz @kravitzlab.com · 19/06/2025This was a really fun project: We blocked obesity in mice by making them do a tiny bit of work for their food. www.sciencedirect.com/science/arti...sciencedirect.comA simple action reduces high-fat diet intake and obesity in miceDiets that are high in fat cause overeating and weight gain in multiple species of animals, suggesting that high dietary fat is sufficient to cause ob… 86119
Reposted by Alexander JaisNature Metabolism @natmetabolism.nature.com · 11/06/2025bit.lyA food-sensitive olfactory circuit drives anticipatory satietyNature Metabolism, Published online: 11 June 2025; doi:10.1038/s42255-025-01301-1The authors describe a sensory circuit involving the medial septum (MS), where MS glutamatergic neurons integrate food odours to prime satiety and regulate nutrient intake. 012
Alexander Jais @jaislab.bsky.social · 16/05/2025Astrocytes as regulators of neuromodulatory signaling www.science.org/doi/10.1126/...science.orgAstrocytes, hidden puppet masters of the brainAstrocyte signaling pathways influence neuronal networks and behavioral responses to neuromodulators 010
Reposted by Alexander JaisDaniel Drucker @danieljdrucker.bsky.social · 15/05/2025Based on studies in mice selective, durable AgRP neuron inhibition may prove an attractive strategy for the future treatment of T2D in humans www.jci.org/articles/vie... 042
Reposted by Alexander JaisDER SPIEGEL @spiegel.de · 24/04/2025Aus Deutschland sprechen sich 110 Wissenschaftlerinnen und Wissenschaftler öffentlich für Tierversuche aus. Frank Kirchhoff, Initiator der Aktion, sagt, warum Experimente an Mäusen, Ratten und Fischen immer noch sein müssen.spiegel.deTierversuche: Warum sich mehr als 110 Forschende zu den Experimenten bekennenAus Deutschland sprechen sich 110 Wissenschaftlerinnen und Wissenschaftler öffentlich für Tierversuche aus. Frank Kirchhoff, Initiator der Aktion, sagt, warum Experimente an Mäusen, Ratten und Fischen immer noch sein müssen. 073
Reposted by Alexander Jaisadhideb.bsky.social @adhideb.bsky.social · 13/05/2025Check out the roadmap to the first consensus atlas of human and mouse #adiposetissue. Great initiative by the adipose bionetwork of #humancellatlas! @humancellatlas.org @humancellatlas.bsky.social 042
Reposted by Alexander JaisJens Lund @lundjens.bsky.social · 08/05/2025Is increased hunger really a primary driver of obesity? In this Letter to the Editor in @nejm.org, Thorkild Sørensen, Mark Friedman and I question the widespread idea that many develop obesity because they overeat 👇 1/5 www.nejm.org/doi/full/10.... @cbmr.sciencenejm.orgThe Physiology of Hunger | NEJMTo the Editor: The review article by Fasano (Jan. 23 issue)1 concerning human nutrition and hunger regulation omits the crucial role of autophagy, a cellular recycling process vital for maintaining... 131
Alexander Jais @jaislab.bsky.social · 25/04/2025GABAergic, Non-AgRP neurons are critical for the regulation of overnutrition 🍟🍔 - this new study shows that leptin exerts a substantial portion of its appetite- and body-weight-regulatory effects via PNOC/NPY-expressing neurons! @cp-cell.bsky.social @mpi-metabolism.bsky.socialcell.comHypothalamic PNOC/NPY neurons constitute mediators of leptin-controlled energy homeostasisActivation of PNOCARC neurons promotes feeding. Here, Solheim et al. describe PNOC neurons in the murine ARC as mediators of leptin action in body weight maintenance. Moreover, they molecularly and fu... 042
Reposted by Alexander JaisDaniel Drucker @danieljdrucker.bsky.social · 16/04/2025A critical role of Notch signalling in brain endothelial cells in the pleiotropic effects of short-term dietary transitions on blood brain barrier functionality @cp-cellreports.bsky.social www.cell.com/cell-reports...cell.comReduced Notch signaling in hypothalamic endothelial cells mediates obesity-induced alterations in glucose uptake and insulin signalingZhu et al. describe a rapid downregulation of Notch1 expression in hypothalamic blood-brain barrier (BBB) endothelial cells after high-fat diet (HFD) feeding. Notch activation prevents HFD-induced red... 021
Reposted by Alexander JaisKimberley Bruce @drkimberleybruce.bsky.social · 15/04/2025Trem2 is more flexible than we thought, and likes to bind to ApoE4! Congrats #EmmaLietzke and #KaylaSprenger on your work! It's a privilege to work with you!! @cuendocrinology.bsky.social alz-journals.onlinelibrary.wiley.com/doi/10.1002/...alz-journals.onlinelibrary.wiley.comSynergistic reduction in interfacial flexibility of TREM2R47H and ApoE4 may underlie AD pathologyBACKGROUND The strongest genetic drivers of late-onset Alzheimer's disease (AD) are apolipoprotein E4 (ApoE4) and TREM2R47H. Despite their critical roles, the mechanisms underlying their interaction..... 063
Alexander Jais @jaislab.bsky.social · 09/04/2025A thread 🧵: Our study redefines current concepts of insulin entry into the brain under conditions of nutritional excess. www.sciencedirect.com/science/arti... @www.helmholtz-munich.de @mpi-metabolism.bsky.socialsciencedirect.comReduced Notch signaling in hypothalamic endothelial cells mediates obesity-induced alterations in glucose uptake and insulin signalingShort-term transition to high-fat diet (HFD) feeding causes rapid changes in the molecular architecture of the blood-brain barrier (BBB), BBB permeabi… 432
Reposted by Alexander JaisD’Agostino Lab @dagostinolab.bsky.social · 07/04/2025Our latest study @science.org #Immunology on perception of #hunger and #immunity. #BrainBody #Melanocortin #AgRP #POMC neurons. #Brain-liver axis. Permissive action of #stress #hormones. @ukri.org @fbmh-uom.bsky.social www.science.org/doi/10.1126/...science.orgBrain sensing of metabolic state regulates circulating monocytesBrain-initiated hunger signals control circulating monocyte dynamics. 14413
Alexander Jais @jaislab.bsky.social · 07/04/2025Congratulations, Yiyi! 🎉 We find that high-fat diet rapidly reduces Notch signaling in the brain, affecting glucose uptake and insulin sensitivity. Our study also highlights the role of caveolae in blood-brain barrier permeability and insulin transport: www.sciencedirect.com/science/arti...sciencedirect.comReduced Notch signaling in hypothalamic endothelial cells mediates obesity-induced alterations in glucose uptake and insulin signalingShort-term transition to high-fat diet (HFD) feeding causes rapid changes in the molecular architecture of the blood-brain barrier (BBB), BBB permeabi… 031