A study published in Nature Medicine found that genetic variants associated with autism are present in 4% of those with autism and 1% of the general population. These variants were linked to poorer cognitive performance, lower socioeconomic status, and educational level in undiagnosed individuals.
Scientists have found that tiger mosquitoes can transmit the chikungunya virus as effectively at 20°C as at 28°C, raising concerns about its spread in temperate regions. The study reveals different gene expression profiles and microbiome changes in infected mosquitoes, which could lead to increased transmission of the pathogen.
Scientists from Institut Pasteur and Inserm discovered that CD4 T cells can remotely neutralize tumor cells by producing interferon gamma, offering new hopes for patients with incomplete responses to CAR T cell therapy. This study raises the possibility of personalized treatment approaches using larger quantities of CD4 CAR T cells.
Researchers discovered nanoscopic tunnels that connect precursor cells in the cerebellum as they mature into neurons. These tunnels enable molecular exchange and physical migration of pre-neuronal cells across layers, shedding light on brain connectivity and development.
Scientists detected the emergence of extensively drug-resistant (XDR) Shigella sonnei strains in France, primarily among men who have sex with men. XDR isolates are resistant to virtually all antibiotics, requiring complex treatment and hospitalization.
Researchers discovered that administration of GDF11 improves cognitive abilities and reduces depression-like behaviors in aged mice. In humans, low levels of GDF11 are associated with depressive episodes, suggesting a potential link between the protein and mood disorders.
After a stem cell transplant from a donor with the CCR5-delta 32 mutation, a man was able to stop his antiretroviral treatment without viral resurgence. Four years later, no HIV virus could be detected in his body, indicating probable cure. This case joins two previous reported cases and offers further proof that HIV can be cured.
A new study by Institut Pasteur reveals that the 'bony-tongues' and 'eels' are genetically linked, shedding light on the evolutionary history of teleost fishes. The researchers sequenced genomes of several species and reconstructed relationships between different fish groups.
Researchers identified HCirV-1 in a patient with unexplained chronic hepatitis, demonstrating its role in liver damage. After treatment, the patient's liver enzymes returned to normal levels, indicating the end of hepatic cytolysis.
Researchers analyzed the genomes of over 2,800 individuals in Europe to study the evolution of immune system genes. They found that mutations advantageous for defending against pathogens increased in frequency after the Bronze Age, while those increasing disease risk fell.
Scientists discovered a novel neural mechanism that accompanies unconsciousness, masking sensory inputs with spontaneous activity. The auditory cortex's response to sounds is indistinguishable from its own internal activity under anesthesia.
Researchers discovered an electric signal in the hippocampus triggered by novelty, inducing a transition from memory to learning states. The signal may work as a switch to enable the brain to balance forming new memories and recalling familiar ones.
Scientists propose a new therapy for preeclampsia by correcting placental defects with BH4 treatment. The treatment restores placental and fetal weight, lowers blood pressure, and resolves symptoms of excess protein in urine and cardiovascular abnormalities.
Researchers studied the immunogenic potential of the 4CMenB vaccine in hematopoietic stem cell transplant recipients, finding 90% of patients developed protective antibody levels after two doses. The trial supports including meningococcal B vaccination alongside A, C, W, and Y vaccines from 6 months post-transplant to improve protection.
The partnership aims to enhance early detection and reporting for emerging diseases, building a robust decentralized global surveillance network. The collaboration will focus on advancing equitable data-sharing practices, bolstering epidemiological and genomic surveillance in low- and middle-income countries.
SARS-CoV-2 uses nanotubes to infect neurons, bypassing the usual ACE2 receptor. The virus can spread rapidly through these nanotubes, contributing to its infectious capacity and neurological symptoms.
Researchers at the Institut Pasteur and CNRS studied SARS-CoV-2 replication in bat cells, finding that viral infection triggers a powerful immune response that prevents the virus from replicating. The study uses real-time imaging techniques to visualize the speed of cell infection and the formation of syncytia.
Scientists at Institut Pasteur developed potent neutralizing antibodies from convalescent COVID-19 individuals effective against various SARS-CoV-2 variants. These human antibodies are promising candidates for immunotherapies to prevent severe forms and/or treat COVID-19 in immunocompromised patients.
In a mouse model, stromal cells developed before weaning age promote the maturation of the intestinal barrier by forming a specialized niche. Absence of these cells induces defect in postnatal growth and increases susceptibility to intestinal inflammatory diseases.
Researchers developed an ensemble model combining multiple individual predictive models to anticipate COVID-19 hospital demand, achieving a significant reduction in prediction error. The study's findings show that incorporating early predictors such as epidemiological data and mobility data leads to better forecasts.
Researchers successfully reprogrammed non-controllers' CD8+ T cells to acquire properties of natural HIV controllers, enabling them to suppress viral load and survive without exhaustion. This breakthrough could lead to a cell therapy strategy for achieving HIV remission, with potential applications in cancer treatments.
A study published in Brain reveals a dedicated neural circuit responsible for post-sepsis anxiety and depression. The researchers identified a potential pharmacological treatment by silencing the amygdala circuit during sepsis, reducing the risk of developing anxiety disorders.
Scientists discovered that bacteria adapt their gene expression to evade bacteriophages in the gut environment, reducing susceptibility to infection. This finding paves the way for improved use of phages in therapeutic purposes.
Researchers at Institut Pasteur have found that hypothalamic neurons can directly detect variations in bacterial activity, adapting appetite and body temperature accordingly. This discovery could lead to new treatments for diabetes and obesity.
Researchers identified two types of humoral immune responses in PTCs, one effective in controlling short episodes of viral activity and another lacking strong response. This discovery sheds light on HIV control mechanisms and could inspire novel therapeutic or vaccine strategies.
Researchers found that APC gene mutations in colon cancer patients disrupt T lymphocyte migration to tumors, making it harder for the immune system to combat cancer. The study provides new insights into the mechanisms of antitumor immune defense.
Researchers studied the sensitivity of Omicron BA.1 and BA.2 to nine monoclonal antibodies, finding reduced neutralization activity against newer variants. The study suggests that treatments may be less clinically effective against Omicron infection than against Delta variant.
Researchers at Institut Pasteur found that immunocompromised patients experience disrupted immune mechanisms, including reduced production of antibodies and increased pathogenic bacteria, after a bone marrow transplant. This discovery could lead to more effective treatment protocols for these patients.
Researchers at Institut Pasteur discovered a mechanism that enables infected cells to evade immune responses and infect the brain, leading to life-long persistence of bacteria. This finding has implications for understanding other intracellular pathogens and developing new therapeutic strategies.
Researchers found that innate effector cells can acquire a memory to strengthen gut mucosal defenses against repeated infections over time. This discovery demonstrates a new antibacterial immune defense mechanism and could lead to novel therapeutic approaches to treat intestinal diseases.
Legionella pneumophila secretes small regulatory RNA molecules that mimic eukaryotic microRNAs, downregulating RIG-I protein to diminish host immune response and promote replication. This mechanism enables the bacterium's survival and development during infection.
Researchers at Institut Pasteur have found that certain anti-HIV-1 antibodies can prevent infected cells from releasing viral particles, thereby halting viral spread. These Y-shaped antibodies form chains with viral particles, creating a structure that traps viruses and prevents infection of new cells.
Researchers identified a novel therapeutic target for multiple myeloma by discovering the Sec61 translocon's vulnerability to inhibition. This targets the translocon prevents multiple myeloma cells from producing proteins through the secretory pathway, leading to their death.
The Omicron variant is more transmissible than the Delta variant, spreading to individuals with two vaccine doses and previously infected individuals. A booster dose of Pfizer or AstraZeneca vaccine significantly increases antibody levels that can neutralize Omicron.
A recent study published in The Lancet Respiratory Medicine found that COVID-19 patients in ICUs have a high risk of developing invasive fungal secondary infections. In fact, the MYCOVID study revealed that 22% of intubated and mechanically ventilated COVID-19 patients in ICUs had proven or probable invasive pulmonary aspergillosis and...
Scientists identified a genetic mutation in the CHRNA5 gene as a predisposing factor for COPD, independent of smoking. The mutation affects airway epithelium inflammation and remodeling, leading to symptoms similar to COPD.
The study found that indoor bars, private parties, and nightclubs were high-risk places for transmitting the Delta variant, with men being more susceptible. Previous infection conferred a 95% protective effect, while two doses of mRNA vaccines provided 67% protection against symptomatic infection.
Researchers identified a specific interaction between SARS-CoV-2 and G-quadruplexes in human cells. Using G4 ligands, they showed antiviral activity against the virus.
Researchers found that α-syn fibrils spread through lysosomes, impairing their function and allowing the seeding of soluble α-syn. This process creates a hub for the propagation of disease pathology, shedding light on a crucial mechanism in Parkinson's disease.
The study found that two-dose mRNA vaccines provided 88% protection against the original SARS-CoV-2 virus, 86% against the Alpha variant, and 77% against the Beta variant. Previous SARS-CoV-2 infection also conferred similar protection to mRNA vaccination.
This study analyzed circumstances of SARS-CoV-2 infection in France, identifying key risk factors and behaviors associated with higher infection rates. The study found that working professionals, car-sharing, recent travel abroad, and visits to bars, restaurants, and gyms increased the risk of infection.
The Delta variant is less sensitive to neutralizing antibodies compared to the Alpha variant, with serum from convalescent patients showing reduced potency. Vaccinated individuals' sera effectively neutralize the Delta variant, although efficacy is slightly lower than against the Alpha variant.
Researchers discovered a protective mechanism where dying cells activate the EGFR-ERK pathway in neighboring cells, preventing simultaneous cell death. This mechanism ensures tissue integrity and connectivity.
Researchers from Institut Pasteur and CNRS discover the biosynthesis pathway of 2-aminoadenine, a new base in DNA, using crystallography platform. The discovery increases coding bases in DNA, enabling synthetic genetic biopolymers.
Newborns are more susceptible to GBS meningitis due to immature gut microbiota and epithelial barriers. This study highlights the critical role of microbiota in protecting against infection, demonstrating its importance in newborn health.
Developed by Inserm teams and French company NEOVACS, the conjugate vaccine induces sustained production of antibodies against IL-4 and IL-13, significantly reducing asthma symptoms.
COVID-19 causes loss of smell by infecting sensory neurons and triggering inflammation. The virus persists in the olfactory epithelium for months, leading to prolonged clinical signs.
Researchers have discovered the biosynthesis pathway of 2-aminoadenine, a new DNA nucleobase found in bacteriophage S-2L. The pathway was identified through a homolog of the known enzyme succinoadenylate synthase and indicates that new bases can be enzymatically incorporated into genetic material.
Researchers found that SARS-CoV-2 infection induces polyfunctional antibodies capable of neutralizing the virus and activating immune cells to destroy infected cells. Asymptomatic individuals also have these antibodies, but with slightly weaker responses.
Researchers analyzed genome sequencing data from 320 individuals to understand how human populations adapted to Pacific island environments. They found that ancient admixture with Denisovans and Neanderthals influenced the current state of health in South Pacific populations.