Peer-reviewed studyPNAS
Blocking one side of a brain receptor restores memory in Alzheimer’s mice
A peer-reviewed study in mice, published in the journal PNAS on October 12, 2026, found that metabotropic glutamate receptor 5 (mGlu5) is not balanced between the two sides of the hippocampus in wild-type mice, and that this balance is lost in two mouse models of Alzheimer’s disease. Using a light-controlled compound, the researchers inhibited mGlu5 in the left hippocampus only, which restored working and short-term memory in those mice. The study is in mice, not people.
- Published
- Oct 12, 2026
DOI 10.1073/pnas.2535413123
Preprint, not peer-reviewedbioRxiv
Human caspase-4 and caspase-5 sense more bacterial molecules than mouse caspase-11
A preprint, not yet reviewed by other scientists, reports that human caspase-4 and caspase-5 respond to a broader range of bacterial lipopolysaccharide (LPS) structures than the mouse protein caspase-11 does. In mice engineered to express human CASP4, the authors report better control of Francisella novicida, a rodent pathogen, but greater susceptibility to sepsis when exposed to E. coli with a lipid A variant. The preprint is dated October 13, 2026, and is a laboratory and mouse study.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.06.756901
Preprint, not peer-reviewedmedRxiv
English-language requirements in US clinical trials have become more common
A preprint, not yet reviewed by other scientists, is a cross-sectional study of 44,487 interventional US trials registered on ClinicalTrials.gov, which shows associations rather than causes. It found that an English-language proficiency requirement in eligibility criteria rose from 7.4% of trials starting in 2010 to 26.2% of trials starting in 2023, and that the requirement was associated with lower enrolled proportions of Asian and Hispanic/Latinx participants. The preprint is dated October 13, 2026.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.09.26365106
Preprint, not peer-reviewedmedRxiv
A dietitian persona shifts AI calorie estimates from food photos
A preprint, not yet reviewed by other scientists, compares 26 vision-language models on estimating energy intake from meal photographs. The authors report that a prompt describing a Japanese dietitian moved the estimates by amounts that depended on the model and cuisine rather than on the correction needed, so they do not propose a persona as a general calibration method. They also report that nearly empty trays still received 39% to 75% of the before-meal estimate. The preprint is dated October 13, 2026.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.09.26365134
Preprint, not peer-reviewedmedRxiv
Less favorable childhood experiences linked to poorer adult wellbeing in India
A preprint, not yet reviewed by other scientists, analyzes a nationally representative cross-sectional survey of 12,765 adults in India from the Global Flourishing Study (GFS). It found that less favorable childhood experiences were generally associated with poorer wellbeing and flourishing, while childhood abuse was associated with greater odds of volunteering. The associations do not establish cause, and the preprint is dated October 13, 2026.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.09.26365161
Preprint, not peer-reviewedmedRxiv
Blood serum from people with atrial fibrillation disturbs heart cells in lab tests
A preprint, not yet reviewed by other scientists, reports laboratory experiments in which serum from patients with persistent atrial fibrillation changed electrical activity in isolated mouse hearts and in human stem-cell-derived atrial cardiomyocytes. The authors say the effect was not linked to measures of atrial disease severity, and they identified rhythm-associated proteins in the serum. The preprint is dated October 13, 2026, and reports laboratory work, not effects seen in patients.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.09.26365177
Preprint, not peer-reviewedmedRxiv
Black and White participants differ in one brain small-vessel marker, a preprint reports
A preprint, not yet reviewed by other scientists, is a cross-sectional study of 44,982 participants that shows associations, not causes, between ethnoracial group and cerebral small vessel disease. Black participants had higher white matter hyperintensity volume than White participants, while South Asian participants had fewer enlarged perivascular spaces, and the authors found no clear group difference in lacunes or microbleeds. Higher Life's Essential 8 scores were linked to less white matter change, while cognitive differences did not track brain changes. The preprint is dated October 13, 2026.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.09.26365181
Preprint, not peer-reviewedmedRxiv
Vitamin D shows mixed evidence for preventing childhood respiratory infections
A preprint, not yet reviewed by other scientists, is a systematic review and random-effects meta-analysis of 16 publications on vitamin D supplementation in children and adolescents. Pooled estimates favored supplementation in direction, but confidence intervals included no effect for respiratory infection and for lower respiratory infection or recurrent pneumonia, while the pooled estimate for hospitalization or clinical severity was statistically significant. The authors note substantial heterogeneity between studies, and the preprint is dated October 13, 2026.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.11.26365254
Preprint, not peer-reviewedbioRxiv
A sugar-breakdown molecule may strengthen cancer signaling, a preprint reports
A preprint, not yet reviewed by other scientists, reports that glyceraldehyde-3-phosphate, an intermediate in glucose breakdown, binds the proteins SOS1 and RAS and strengthens their interaction in RAS-mutant cancer cells. The authors say the glucose-transporter GLUT6 drives this, and that suppressing MAZ or GLUT6 selectively inhibited RAS-mutant cancer cells in vitro and in vivo. The work is at an early laboratory stage, and the preprint is dated October 13, 2026.
- Published
- Oct 13, 2026
DOI 10.64898/2026.10.13.758812
Peer-reviewed studyCell
A light-switchable opioid can reversibly control pain relief, study reports
A peer-reviewed study published in the journal Cell on October 15, 2026, describes Azo-morphine-3 (AM-3), a photoswitchable ligand that toggles between low and high efficacy states. The authors report that AM-3 controls mu-opioid receptor activity in vitro and in vivo, in both the brain and the periphery, enabling precise control of analgesia across pain models with reduced side effects compared with systemic drugs.
- Published
- Oct 15, 2026
DOI 10.1016/j.cell.2026.09.042
Peer-reviewed studyPNAS
TRPV1 pain receptor has distinct open states depending on the stimulus
A peer-reviewed study in the journal PNAS, published October 15, 2026, reports that activators of TRPV1, a polymodal nociceptor (a sensor for several kinds of stimuli), stabilize functionally distinct open states with discrete single-channel conductance levels. The authors also report that combining two stimuli slows channel opening rather than speeding it up, and they suggest these states may offer opportunities for selective modulation in pain management.
- Published
- Oct 15, 2026
DOI 10.1073/pnas.2614335123
Preprint, not peer-reviewedbioRxiv
Bile acid receptor TGR5 may rejuvenate aged hippocampal stem cells in mice
A preprint, not yet reviewed by other scientists, reports that activating TGR5, a bile-acid receptor, expanded neural stem cells in cultures and in 18-month-old mice, and improved spatial memory in those mice without generating new neurons. The authors say these effects depended on TGR5 in the dentate gyrus, and that the aged hippocampal proteome moved partway toward a younger profile. Because the work is mostly laboratory and mouse research, its relevance to people is not yet known.
- Published
- Oct 15, 2026
DOI 10.64898/2026.10.08.757807
Preprint, not peer-reviewedmedRxiv
Rare gene variants are associated with cognition and several psychiatric conditions
A preprint, not yet reviewed by other scientists, analyzes genetic data from the Adolescent Brain Cognitive Development Study (ABCD) and the All of Us Research Program. It reports that rare protein-truncating variants in constrained genes were associated with autism spectrum disorder, schizophrenia and intellectual disability, and that constraint-weighted rare variant load contributes to cognitive and neuropsychiatric outcomes. The findings are associations in population cohorts, and the preprint is dated October 15, 2026.
- Published
- Oct 15, 2026
DOI 10.64898/2026.10.13.26365349
Preprint, not peer-reviewedmedRxiv
Machine-learning system predicts whether a clinical trial will meet its main endpoint
A preprint, not yet reviewed by other scientists, describes a machine-learning system that estimates the probability that a clinical trial will achieve its primary endpoint, using information available at registration. On a test set of trials started in 2021 or later, the efficacy model reached an area under the receiver operating characteristic curve (AUROC) of 0.828, and the authors say the model is embedded in an agentic AI system called inClinico Agent. The preprint is dated October 15, 2026.
- Published
- Oct 15, 2026
DOI 10.64898/2026.10.13.26365373
Preprint, not peer-reviewedmedRxiv
Deep learning system helps quantify cervical cell slides, a preprint reports
A preprint, not yet reviewed by other scientists, describes CytoLens, a deep learning system that detects and counts nuclei, delineates cells and scores candidate abnormality in cervical cytology images. The authors report an F1 score of 0.931 for nucleus detection and a mean accuracy of 0.947 across four categories, in tests on public datasets, and they say the next step is evaluation on patient-linked clinical specimens. The preprint is dated October 15, 2026.
- Published
- Oct 15, 2026
DOI 10.64898/2026.10.13.26365471
Preprint, not peer-reviewedbioRxiv
Embryo-like gene programs in tumors predict survival in opposite directions
A preprint, not yet reviewed by other scientists, reports that gene expression resembling early embryonic stages is widespread in human tumors, measured with machine-learning classifiers called EmbryoRadar. The authors report that similarity to the zygote and 2-cell embryo stages was associated with better overall survival, while trophectoderm-like programs were associated with worse survival in breast cancer and melanoma. They identify MYBL2 and FOXM1 as possible vulnerabilities in trophectoderm-high cancers, a laboratory finding not yet tested in patients, and the preprint is dated October 15, 2026.
- Published
- Oct 15, 2026
DOI 10.64898/2026.10.13.758949
Preprint, not peer-reviewedbioRxiv
Shared gene signatures link suicide with bipolar and major depressive disorder
A preprint, not yet reviewed by other scientists, is a systematic literature review following PRISMA 2020 guidelines, combined with an integrated analysis of postmortem brain transcriptomic data. It reports 276 genes shared across suicide, bipolar disorder and major depressive disorder, implicating stress, hypoxia, inflammatory and extracellular matrix pathways, along with disease-specific patterns. The study describes molecular patterns rather than causes, and the preprint is dated October 15, 2026.
- Published
- Oct 15, 2026
DOI 10.64898/2026.10.14.759202
Preprint, not peer-reviewedbioRxiv
A diffusion model redesigns proteins to lower predicted immune reactions
A preprint, not yet reviewed by other scientists, describes MESSI, a generative discrete diffusion model that designs protein sequences which keep their structure while avoiding predicted peptides that bind major histocompatibility complex class II molecules. The authors report deimmunized versions of a luciferase, a PD-1 mini-binder and the enzyme uricase, some with higher activity than their parents or natural orthologs. The preprint is dated October 16, 2026, and reports laboratory experiments.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.09.758136
Preprint, not peer-reviewedbioRxiv
Mutations in influenza defective genomes can raise interferon output
A preprint, not yet reviewed by other scientists, reports laboratory experiments on defective influenza A genomes, called delVGs, which can stimulate immune responses. The authors report that mutations disrupting a polyuracil tract increased interferon production by up to two orders of magnitude, and that some variants greatly suppressed the growth of replication-competent virus. Because these are laboratory experiments, the findings do not yet show any use in people, and the preprint is dated October 16, 2026.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.13.758203
Preprint, not peer-reviewedmedRxiv
Recorded type 2 diabetes remission is uncommon and often ends with treatment restart
A preprint, not yet reviewed by other scientists, analyzes linked electronic health records and claims data from 136,781 adults with type 2 diabetes. The authors report that remission was recorded in 4.33% of previously treated adults and 15.57% of untreated adults at entry, and that remission more often ended with treatment restart than with a rise in HbA1c. They say studies of remission in real-world data should report relapse and restart separately, and the preprint is dated October 16, 2026.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.14.26365480
Preprint, not peer-reviewedmedRxiv
Explicit clinical logic in training data may improve an AI model for chronic disease
A preprint, not yet reviewed by other scientists, tests a data-augmentation approach that makes clinical decision relationships explicit for an 8-billion-parameter Qwen3 model, ChronIQ-DRx2, across four chronic diseases. The authors report descriptive point estimates, not statistical comparisons, including a serious clinical error rate of 12.5% for the enhanced model versus 16.7% for the baseline, and physician accuracy of 88.20% with AI assistance versus 87.40% alone. The preprint is dated October 16, 2026, and the authors say rationale faithfulness, generalizability and clinical safety still need evaluation.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.14.26365588
Preprint, not peer-reviewedmedRxiv
Girls report more distress than boys in four countries, with varied drivers
A preprint, not yet reviewed by other scientists, analyzes longitudinal data from the Young Lives studies in Ethiopia, India, Peru and Vietnam, using a multi-domain framework of explanatory factors for psychological distress. Distress at ages 18 to 19 was higher in girls than boys in every country, with the gap ranging from 0.62 points in Ethiopia and Vietnam to 2.45 points in Peru. The authors say the factors that differ by gender, and their effects, varied across countries, so drivers should not be generalized across contexts.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.15.26365610
Preprint, not peer-reviewedbioRxiv
Blocking proteasome regulator PSME4 may reprogram tumor inflammation
A preprint, not yet reviewed by other scientists, reports a covalent small molecule that targets the non-catalytic proteasome regulator PSME4, and shows that reducing PSME4 stabilizes STAT1, restores interferon-associated transcription and enhances antigen presentation in tumor cells. The authors also report disrupted IL-6/STAT3 signaling and suppressed tumor growth in vivo, which they describe as a PSME4-STAT1-STAT3 axis. This is early laboratory and in vivo work, dated October 16, 2026, so its relevance to patients is not yet shown.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.15.759172
Preprint, not peer-reviewedbioRxiv
ARID5A protects liver cells from steatohepatitis in mice, a preprint reports
A preprint, not yet reviewed by other scientists, reports that ARID5A, a protein that binds both DNA and RNA, is induced in hepatocytes under lipotoxic endoplasmic reticulum stress through the PERK pathway. In mice fed a diet that induces metabolic dysfunction-associated steatohepatitis (MASH), the authors report that hepatocyte-directed overexpression of ARID5A attenuated steatohepatitis, inflammation and fibrosis. This is laboratory and mouse work, and the preprint is dated October 16, 2026.
- Published
- Oct 16, 2026
DOI 10.64898/2026.10.15.759473