The Medicines and Healthcare products Regulatory Agency has secured funding to expand its AI Airlock regulatory sandbox.
The Download: how humans make decisions, and Moderna’s “vaccine” word games
This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology.
You have no choice in reading this article—maybe
How do humans make decisions? The question has been on Uri Maoz’s mind since he read an article in his early twenties suggesting that… maybe they didn’t.
Had he even had a choice about whether to read that article in the first place? How would he ever know if he was truly responsible for making any decisions? “After that, there was no turning back,” says Maoz, now a professor of computational neuroscience at Chapman University.
Today, Maoz is a central figure in efforts to understand how desires and beliefs turn into actions. He’s also uncovered new wrinkles in the debate. Read the full story on his discoveries.
—Sarah Scoles
This article is from the next issue of our print magazine, packed with stories all about nature. Subscribe now to read the full thing when it lands on Wednesday, April 22.
What’s in a name? Moderna’s “vaccine” vs. “therapy” dilemma
Moderna, the covid-19 shot maker, is using its mRNA technology to destroy tumors through a very, very promising technique known as a cancer vacc—
“It’s not a vaccine,” a spokesperson for Merck said before the V-word could be uttered. “It’s an individualized neoantigen therapy.”
Oh, but it is a vaccine, and it looks like a possible breakthrough. But it’s been rebranded to avoid vaccine fearmongering—and not everyone is happy about the word game. Read the full story.
—Antonio Regalado
This article is from The Checkup, our weekly newsletter covering the latest in biotech. Sign up to receive it in your inbox every Thursday.
The must reads
I’ve combed the internet to find you today’s most fun/important/scary/fascinating stories about technology.
1 Sam Altman’s home has been attacked twice in two days
A driver reportedly fired a gun at his property on Sunday. (SF Standard)
+ A Molotov cocktail was thrown at his home on Friday. (NBC News)
+ The suspect wrote essays warning AI would end humanity. (SF Chronicle)
+ The attacks expose growing divides in opinion on AI. (Axios)
2 AI weapons are ushering in a new kind of arms race
Countries are racing to deploy AI in military systems. (NYT $)
+ The Pentagon wants AI firms to train on classified data. (MIT Technology Review)
+ Where OpenAI’s technology could show up in Iran. (MIT Technology Review)
3 Artemis II was a success
Astronauts did an array of experiments that will be crucial to the future of both the program itself and deep-space missions. (Guardian)
+ But next steps for the Artemis missions are uncertain. (Ars Technica)
4 OpenAI and Elon Musk are heading toward a massive courtroom clash
The company has accused Musk of a “legal ambush.” (Engadget)
+ He’s lost a streak of cases ahead of the showdown. (FT $)
5 AI job fears in China are fueling a viral “ability harvester” project
It claims to turn human skills into AI tools. (SCMP)
+ Hustlers are cashing in on China’s OpenClaw AI craze. (MIT Technology Review)
6 Governments are hiding information about the Iran war online
Through restrictions on internet access and satellite imagery. (NPR)
7 Apple is testing four smart glasses that could rival Meta Ray-Bans
They’re part of a broader wearables strategy. (Bloomberg $)
8 Meta is building an AI version of Mark Zuckerberg to interact with staff
It’s being trained on his mannerisms, voice, and statements. (FT $)
9 Anthropic is asking Christian leaders for guidance
It’s seeing advice on building moral machines. (WP $)
+ AI agents have spread their own religions. (MIT Technology Review)
10 A dancer with MND is performing again through an avatar
Her brainwaves powered the digital dancer. (BBC)
Quote of the day
“Earth was this lifeboat hanging in the universe.”
—Artemis II astronaut Christina Koch describes her view of Earth from space, the Guardian reports.
One more thing
RAVEN JIANG
How AI and Wikipedia have sent vulnerable languages into a doom spiral
When Kenneth Wehr started managing the Greenlandic-language version of Wikipedia, he discovered that almost every article had been written by people who didn’t speak the language.
A growing number of them had been copy-pasted into Wikipedia from machine translators—and were riddled with elementary mistakes. This is beginning to cause a wicked problem.
AI systems, from Google Translate to ChatGPT, learn new languages by scraping text from Wikipedia. This could push the most vulnerable languages on Earth toward the precipice.
Read the full story on what happens when AI gets trained on junk pages.
—Jacob Judah
We can still have nice things
A place for comfort, fun and distraction to brighten up your day. (Got any ideas? Drop me a line.)
+ Hungary’s next health minister can throw some serious shapes.
+ Here’s a welcome route to an AI-free Google search.
+ Movievia eschews endless scrolling to find the right film for your needs
+ A photography trick has turned a giant glacier into a tiny, living diorama.
How yoga shapes the brain: a systematic review
Yoga is a mind–body practice that originated in India thousands of years ago, and which has extended throughout the world in recent years. As it becomes more popular, more studies are being conducted regarding its health benefits in multiple areas, including the human brain, where results have shown that it can reduce stress, modulate neurotransmitters, increase cerebral blood flow, and affect brain structure and function. This review aims to provide a synthesis of the current knowledge on the impact of yoga on human brain structure and function, through the selection and analysis of 23 international peer-reviewed neuroimaging studies with healthy participants. These studies were selected from 216 results on Web of Science, PubMed and PsycInfo after applying the inclusion and exclusion criteria. The final set of studies employed both neuroimaging and neurophysiological techniques, including MRI, fMRI, and EEG. The results show that yoga may exert multiple effects on the brain. However, the heterogeneity of results may be explained by differences in sample characteristics, study designs, and the lack of a consistent definition of yoga and its distinction from meditation. Finally, the limitations of the present review are discussed, along with recommendations for future research aimed at better understanding the neuropsychological health benefits of yoga.
Transcriptomic profiling and targeted validation reveal molecular mechanisms of oxygen therapy in high-altitude cerebral injury
BackgroundExposure to high-altitude hypoxia is associated with an increased risk of impaired brain structure and function, with oxidative stress and neuroinflammation widely recognized as key mechanisms involved. In this context, hyperbaric oxygen therapy is considered a potential intervention; however, the mechanism by which it affects cerebral function changes caused by high-altitude exposure remains to be further elucidated.ObjectiveThis study aims to explore and compare the therapeutic effects of normobaric oxygen (NBO) and hyperbaric oxygen (HBO) on high-altitude cerebral injury (HACI), and to elucidate the molecular mechanisms underlying their neuroprotective effects using transcriptomic profiling and targeted validation.MethodsA mouse model of high-altitude cerebral injury was established using a hypobaric hypoxia chamber. Mice were exposed to a simulated altitude of 7,000 m (approximately 9.8% O₂ at 0.47 ATA) for 3 consecutive days to induce severe hypoxia. Animals were divided into four groups: Control (Con), High-Altitude exposure (HH), post-HH treated with normobaric oxygen (NBO; 100% O₂ at 1.0 ATA for 1 h daily for 3 days), and post-HH treated with hyperbaric oxygen (HBO; 100% O₂ at 2.0 ATA for 1 h daily for 3 days). Brain tissues were analyzed using H&E staining, RNA sequencing (RNA-seq), Western blotting for key pathway proteins, immunofluorescence for glial cell activation, and ELISA for inflammatory cytokines. Oxidative stress markers (SOD, MDA, GSH, NO) were also assessed.ResultsHistopathological analysis confirmed cerebral damage in the HH group, which was significantly ameliorated by both HBO and NBO treatments. RNA-seq revealed widespread disruption of the cerebral transcriptome following high-altitude exposure. Oxygen therapy was associated with partial restoration of global gene expression patterns. KEGG pathway analysis highlighted significant enrichment in pathways related to NF-κB signaling, cytokine–cytokine receptor interaction, IL-17 signaling, and PI3K–AKT signaling. Subsequent targeted validation demonstrated that oxygen treatment reduced oxidative stress (increased SOD and GSH; decreased MDA and NO) and modulated the PI3K–AKT signaling pathway (increased p-AKT/AKT). Concurrently, oxygen therapy attenuated neuroinflammatory responses, inhibiting microglial and astrocytic activation, reducing pro-inflammatory cytokine levels (IL-1β, IL-6, TNF-α), and modulating the TLR4–NF-κB signaling axis (decreased TLR4 and p-p65/p65). HBO treatment was associated with broader modulation of several molecular pathways involved in oxidative stress and inflammation.ConclusionExisting evidence suggests that HBO may exert protective effects against altitude-related brain injury. This mechanism likely involves activating the PI3K–AKT/Nrf2 axis to alleviate oxidative stress and inhibiting the TLR4–NF-κB pathway to reduce neuroinflammation, thereby partially restoring transcriptional homeostasis. However, the causal relationships between these pathways and their interactions require further validation and refinement.
Causal network analysis-based assessment of gray matter alteration in post-radiotherapy nasopharyngeal carcinoma patients using 3D T1-weighted MRI
ObjectivesTo explore the temporal and causal relationships underlying brain structural changes in post-radiotherapy (RT) nasopharyngeal carcinoma (NPC) patients.MethodsA total of 38 post-radiotherapy NPC patients (33 males, 5 females; median age: 50.0 years, range: 27–63 years; median time post-RT: 17.2 months, range: 0.5–108 months) and 23 healthy controls (16 males, 7 females; median age: 37 years, range: 24–61 years) underwent T1-weighted magnetic resonance (MR) images, and their images were evaluated. The causal structural covariance network (CaSCN) analysis approach was applied to assess the causal relationships underlying radiation-induced brain structural alterations in these patients. Granger causality (GC) analysis was employed to morphometric data derived from T1-weighted MR images, which were ordered by the time elapsed post-RT.ResultsThe source-like directed associations were observed in the bilateral parahippocampal gyrus (PHG), the right gyrus rectus (REC.R), and the right caudate nucleus (CAU.R). The directed network analysis revealed that the parahippocampal gyrus (PHG), REC.R and CAU.R exhibited typical source-like characteristics, and their structural changes exerted a key regulatory effect on GM volume alterations across multiple brain regions. While the left precuneus (PCUN.L), left temporal pole: middle temporal gyrus (TPOmid.L) and the left inferior temporal gyrus (ITG.L) were typical sink-like brain region that mainly received regulatory effects from source-like brain regions, acting as major target regions of structural damage.ConclusionOver time, post-radiotherapy NPC patients exhibited progressive changes in GM volume, where the PHG.L, PHG.R, REC.R and CAU.R were core source-like brain regions. The PCUN.L, TPOmid.L, and ITG.L show distinct sink-like features, which mainly receive regulatory effects from source-like brain regions.
A novel behavioral paradigm using mice to study predictive postural control
Postural control circuitry performs the essential function of maintaining balance and body position in response to perturbations that are either self-generated (e.g., reaching to pick up an object) or externally delivered (e.g., being pushed by another person). Human studies have shown that anticipation of predictable postural disturbances can modulate such responses. This indicates that postural control could involve higher-level neural structures associated with predictive functions, rather than being purely reactive. However, the underlying neural circuitry remains largely unknown. To enable studies of predictive postural control circuits, we developed a novel experimental paradigm for mice. In this paradigm, modeled after studies in humans and rats, a dynamic platform generated reproducible translational perturbations. While mice stood on their hind legs atop a perch to receive water rewards, they experienced backward translations that were either unpredictable or preceded by an auditory cue. To validate the paradigm, we investigated the effect of the auditory cue on postural responses to perturbations across multiple days in three mice. These preliminary results serve to validate a new postural control experimental paradigm, opening the door to the types of neural recordings and circuit manipulations that are currently possible in mice.
From peripheral initiation to central integration: a narrative review of the antihypertensive mechanisms of acupuncture in regulating autonomic nervous system homeostasis
Essential Hypertension (EH) is one of the most prevalent chronic cardiovascular diseases, imposing a significant burden on healthcare systems worldwide due to its high rates of disability and mortality. Long-term elevation of blood pressure leads to multi-organ damage in the heart, brain, and kidneys, resulting in severe complications such as coronary heart disease, stroke, and chronic kidney disease. Current treatment for hypertension primarily relies on pharmacological interventions. Although antihypertensive drugs have achieved notable success in controlling blood pressure, challenges remain, including poor long-term medication adherence, side effects, and inadequate blood pressure control in some patients with resistant hypertension. In parallel, acupuncture, a key modality of traditional Chinese medicine, has demonstrated unique advantages in hypertension management in recent years. Characterized by its holistic regulatory effects and minimal side effects, acupuncture is recognized by the World Health Organization as a recommended complementary and alternative therapy for hypertension, although its precise mechanisms remain incompletely understood. This review aims to summarize the “peripheral-central synergy” antihypertensive mechanism of acupuncture in regulating autonomic nervous system (ANS) homeostasis. Studies indicate that acupuncture primarily modulates autonomic homeostasis through the following pathways: (1) activating peripheral nerve fibers to convert physical stimulation into complex bioelectrical signals; (2) regulating synaptic neurotransmitter release and the expression of related membrane receptors; (3) modulating the synaptic microenvironment; (4) regulating the NTS-CVLM-RVLM neural circuit; and (5) modulating the HPA axis neuro-endocrine circuit. Through in-depth analysis, this review elucidates the multi-level and multi-dimensional impact of acupuncture therapy on primary hypertension, providing stronger evidence and a theoretical foundation for its clinical application.
Acute liver failure and hemolytic anemia induced by quetiapine and aripiprazole overdose in a patient with schizophrenia and metastatic breast cancer: a unique case report
This case report describes a rare situation in which a patient with schizophrenia and metastatic breast cancer experienced acute liver failure and hemolytic anemia caused by an overdose of quetiapine and aripiprazole. On the day of admission, the patient received lipid emulsion infusion, continuous renal replacement therapy (CRRT), and blood perfusion. After these treatments, the patient’s consciousness improved from mild coma to full awareness. However, 48 hours after admission, the patient developed hemolytic anemia and acute liver failure. Following supportive treatments like plasma exchange, bilirubin adsorption, washed red blood cell transfusion, and low-dose dexamethasone for inflammation, the patient recovered and was discharged. This is the first reported case of hemolytic anemia and acute liver failure caused by mixed toxicity of quetiapine and aripiprazole in an adult patient. We analyze the characteristics of this case to enhance awareness of toxicity from atypical antipsychotics like quetiapine and aripiprazole, and to heighten vigilance regarding the potential risks of combined medication in patients with underlying liver disease, thereby improving the success rate of treatment.
The associations of systemic inflammation and insulin resistance-related indicators with psychopathology and BDNF in patients with chronic schizophrenia
BackgroundThe triglyceride-glucose (TyG) index and C-reactive protein-triglyceride-glucose index (CTI) are innovative indicators for assessing insulin resistance (IR) and inflammation, yet research on them in patients with schizophrenia remains limited. This study aimed to explore TyG index and CTI levels and their associations with psychopathology and brain-derived neurotrophic factor (BDNF) in patients with chronic schizophrenia (CS).MethodsThis cross-sectional study was conducted across one general hospital and two psychiatric hospitals in Anhui Province, China. Socio-demographic information and hematological parameters were collected from participants, and their psychiatric and depressive symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS) and the Calgary Depression Scale for Schizophrenia (CDSS), respectively.ResultsA total of 324 patients with CS and 150 healthy controls (HCs) were enrolled in the study. Compared with HCs, patients had higher TyG index and CTI levels (all P < 0.001). Binary logistic regression analyses revealed that among patients, a high TyG index level was significantly associated with higher BDNF levels and lower negative factor scores of the PANSS, while a high CTI level was significantly associated with higher depression-hopelessness factor scores of the CDSS and lower negative factor scores of the PANSS (all P < 0.05).ConclusionPatients with CS had higher levels of TyG index and CTI, which were significantly associated with the severity of negative and depressive symptoms, as well as BDNF levels. It is suggested that the integration of the TyG index and CTI into clinical monitoring for patients with CS is necessary.
Unequal voices: examining autism identification and diagnosis disparities for indigenous Mixtec families
Autism racial/ethnic disproportionality in special education is a significant concern in California and beyond, with White students often overidentified and Latinx and Indigenous (Zapotec/Mixtec) students under-identified. This mixed-methods study investigates the root causes of autism racial/ethnic disproportionality in a California high school district identified as significantly disproportionate for the overidentification of White students with autism. The study was conducted in two stages. First, a Likert-type scale survey (N = 147) was administered to caregivers to examine autism identification and service barriers. In the second stage, three open-response questions within the survey were used to gather qualitative insights from Latinx and Indigenous caregivers. Findings reveal systemic cultural and linguistic barriers contributing to the delayed diagnosis of autism in Latinx and Indigenous students. The qualitative responses further underscore the need for early screening, translation services, and culturally sensitive caregiver support particularly for Indigenous, Mixtec families.