4,923 results match your criteria: "Semel Institute.[Affiliation]"

Understanding cellular architectures and their connectivity is essential for interrogating system function and dysfunction. However, we lack technologies for mapping the multiscale details of individual cells and their connectivity in the human organ-scale system. We developed a platform that simultaneously extracts spatial, molecular, morphological, and connectivity information of individual cells from the same human brain.

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Building Better Bridges: Outcomes of a Community-Partnered New School Transition Intervention for Students on the Autism Spectrum.

J Autism Dev Disord

June 2024

Department of Psychiatry, Center for Autism Research & Treatment, UCLA Semel Institute, Los Angeles, University of California, Los Angeles, CA, USA.

New school transitions can be challenging for students on the autism spectrum. No published, evidence-based interventions exist to support families and teachers of students transitioning to elementary and secondary school during this critical period. Using Community Partnered Participatory Research, we developed Building Better Bridges (BBB), a caregiver coaching intervention that includes training on effective school communication, educational rights, advocacy, and child preparation strategies.

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Kinetic isotope effect reveals rate-limiting step in green-to-red photoconvertible fluorescent proteins.

Protein Sci

July 2024

School of Molecular Sciences, Center for Bioenergy and Photosynthesis, Biodesign Center for Applied Structural Discovery, Arizona State University, Tempe, Arizona, USA.

Photoconvertible fluorescent proteins (pcFPs) undergo a slow photochemical transformation when irradiated with blue light. Since their emission is shifted from green to red, pcFPs serve as convenient fusion tags in several cutting-edge biological imaging technologies. Here, a pcFP termed the Least Evolved Ancestor (LEA) was used as a model system to determine the rate-limiting step of photoconversion.

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The COVID-19 pandemic not only led to drastic changes in the implementation context for early intervention and early childhood special education services in 2020, but has had an enduring effect on the organizations, educators, families, and children with developmental delays and disorders. Through secondary data analysis, characteristics of toddlers with autism being served in a publicly funded center-based early intervention program as well as the characteristics of their educators are examined, comparing those who were enrolled in (a) two randomized trials conducted prior to the pandemic and (b) one ongoing randomized trial that launched in return to in-person educational services after the pandemic shutdown. Significant demographic differences are found for toddlers, where the current study includes more girls (p = 0.

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Purpose: The current study examined the predictive role of gestures and gesture-speech combinations on later spoken language outcomes in minimally verbal (MV) autistic children enrolled in a blended naturalistic developmental/behavioral intervention (Joint Attention, Symbolic Play, Engagement, and Regulation [JASPER] + Enhanced Milieu Teaching [EMT]).

Method: Participants were 50 MV autistic children (40 boys), ages 54-105 months ( = 75.54, = 16.

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Introduction: Persons living with HIV (PLWH) experience the early onset of age-related illnesses, even in the setting of successful human immunodeficiency virus (HIV) suppression with highly active antiretroviral therapy (HAART). HIV infection is associated with accelerated epigenetic aging as measured using DNA methylation (DNAm)-based estimates of biological age and of telomere length (TL).

Methods: DNAm levels (Infinium MethylationEPIC BeadChip) from peripheral blood mononuclear cells from 200 PLWH and 199 HIV-seronegative (SN) participants matched on chronologic age, hepatitis C virus, and time intervals were used to calculate epigenetic age acceleration, expressed as age-adjusted acceleration residuals from 4 epigenetic clocks [Horvath's pan-tissue age acceleration residual (AAR), extrinsic epigenetic age acceleration (EEAA), phenotypic epigenetic age acceleration (PEAA), and grim epigenetic age acceleration (GEAA)] plus age-adjusted DNAm-based TL (aaDNAmTL).

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Background: PDE10A inhibition represents a potential mechanism for treating schizophrenia. PDE10A inhibitors increase cyclic nucleotides in striatal neurons, thereby mimicking the effects of dopamine receptor D2 antagonists and D1 agonists. We evaluated the PDE10A inhibitor MK-8189 for treating schizophrenia.

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The Development of Cannabinoids as Therapeutic Agents in the United States.

Pharmacol Rev

August 2024

UCLA Center for Cannabis and Cannabinoids, Jane and Terry Semel Institute for Neuroscience and Human Behavior, Departments of Psychiatry and Biobehavioral Sciences (C.H.M.) and Departments of Anesthesiology and Perioperative Medicine (Z.D.C.), David Geffen School of Medicine, University of California, Los Angeles, California; Department of Pharmacology and Toxicology, College of Medicine (B.M.G.) and Office of Research Regulatory Affairs, Division of Research and Innovation (B.M.G.), University of Arkansas for Medical Sciences, Little Rock, Arkansas; Departments of Pharmacology and Experimental Therapeutics and Biochemistry and Molecular Biology, School of Medicine (P.J.W.), and Alcohol and Drug Abuse Center of Excellence (P.J.W.) Louisiana State University Health Sciences Center, New Orleans, Louisiana; and Regulatory and Drug Development Consulting, Allucent, Carey, North Carolina (M.S.D.).

Article Synopsis
  • Cannabis contains cannabinoids (phytocannabinoids) that interact with the body's endocannabinoid system, impacting both physical and mental health.
  • The review examines the therapeutic benefits and adverse effects of major cannabinoids like THC and CBD, noting established areas of pain relief and neurocognitive risks.
  • It emphasizes the need for better research methodologies in cannabinoid drug development to enhance understanding of their risks and benefits for therapeutic use in the U.S.
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Epigenetic predictors of species maximum life span and other life-history traits in mammals.

Sci Adv

June 2024

Department of Biostatistics, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, USA.

By analyzing 15,000 samples from 348 mammalian species, we derive DNA methylation (DNAm) predictors of maximum life span ( = 0.89), gestation time ( = 0.96), and age at sexual maturity ( = 0.

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Sleep Problems and Health Outcomes Among Urban American Indian and Alaska Native Adolescents.

JAMA Netw Open

June 2024

Behavioral and Policy Sciences, Division of Social and Economic Wellbeing, RAND Corporation, Santa Monica, California.

Importance: Adolescent sleep problems are prevalent, particularly among racial and ethnic minority groups, and can increase morbidity. Despite the numerous strengths of their racial and ethnic group, urban American Indian and Alaska Native adolescents face significant health disparities but are rarely included in health research. Understanding how sleep problems are associated with health outcomes among American Indian and Alaska Native adolescents may elucidate novel targets for interventions to promote health equity.

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Speech decoding from non-invasive EEG signals can achieve relatively high accuracy (70-80%) for strictly delimited classification tasks, but for more complex tasks non-invasive speech decoding typically yields a 20-50% classification accuracy. However, decoder generalization, or how well algorithms perform objectively across datasets, is complicated by the small size and heterogeneity of existing EEG datasets. Furthermore, the limited availability of open access code hampers a comparison between methods.

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Identifying Precise Targets to Improve Child Mental Health Care Equity: Leveraging Advances in Clinical Research Informatics and Lived Experience.

Child Adolesc Psychiatr Clin N Am

July 2024

Department of Psychiatry and Neuroscience, University of California Riverside, School of Medicine, 900 University Avenue, Riverside, CA 92521, USA.

To reduce child mental health disparities, it is imperative to improve the precision of targets and to expand our vision of social determinants of health as modifiable. Advancements in clinical research informatics and please state accurate measurement of child mental health service use and quality. Participatory action research promotes representation of underserved groups in informatics research and practice and may improve the effectiveness of interventions by informing research across all stages, including the identification of key variables, risk and protective factors, and data interpretation.

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Article Synopsis
  • This pilot study evaluates the quality of genomics and proteomics data from both FFPE and frozen tissue biopsies of LIRADS 5 hepatocellular carcinoma (HCC).
  • The preliminary results indicated that fresh frozen samples showed better efficacy in identifying differentially expressed proteins and genes in varying histological grades of HCC.
  • The findings provide important insights for selecting appropriate samples for future research on HCC.
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Inflammatory pain results from the heightened sensitivity and reduced threshold of nociceptor sensory neurons due to exposure to inflammatory mediators. However, the cellular and transcriptional diversity of immune cell and sensory neuron types makes it challenging to decipher the immune mechanisms underlying pain. Here we used single-cell transcriptomics to determine the immune gene signatures associated with pain development in three skin inflammatory pain models in mice: zymosan injection, skin incision and ultraviolet burn.

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Glioblastoma is the deadliest brain cancer in adults and almost all patients succumb to the tumor. While surgery followed by chemo-radiotherapy significantly delays disease progression, these treatments do not lead to long-term tumor control and targeted therapies or biologics have so far failed to further improve survival. Utilizing a transient radiation-induced state of multipotency we used the adenylcyclase activator forskolin to alter the cellular fate of glioma cells in response to radiation.

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Alzheimer disease-related biomarkers and cancer-related cognitive decline: the Thinking and Living with Cancer study.

J Natl Cancer Inst

September 2024

Department of Radiology and Imaging Sciences, Melvin and Bren Simon Comprehensive Cancer Center, and Indiana Alzheimer's Disease Research Center, Indiana University School of Medicine, Indianapolis, IN, USA.

Purpose: We evaluated whether plasma Alzheimer disease (AD)-related biomarkers were associated with cancer-related cognitive decline among older breast cancer survivors.

Methods: We included survivors aged 60-90 years with primary stage 0-III breast cancers (n = 236) and frequency-matched noncancer control paricipant (n = 154) who passed a cognitive screen and had banked plasma specimens. Participants were assessed at baseline (presystemic therapy) and annually for up to 60 months.

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Physical Pain Among Urban Native American Emerging Adults: Sociocultural Risk and Protective Factors.

Psychosom Med

September 2024

From the University of Southern California, Suzanne Dworak-Peck School of Social Work (Saba), Los Angeles, California; RAND (Rodriguez), Boston, Massachusetts; UCLA Integrated Substance Abuse Program, Semel Institute for Neuroscience and Human Behavior, David Geffen School of Medicine (Dickerson), Los Angeles; Santa Cruz Indian Council Board of Directors (Mike); Public Health Consultant (Schweigman), Santa Cruz; Sacred Path Indigenous Wellness Center (Arvizu-Sanchez, Johnson), Los Angeles; American Indian Counseling Center (Funmaker), Cerritos; and RAND (Brown, Malika, D'Amico), Santa Monica, California.

Objective: American Indian/Alaska Native (AI/AN) people have high rates of physical pain. Pain is understudied in urban-dwelling, AI/AN emerging adults, a group with unique sociocultural risk and protective factors. We explore associations between socioeconomic disadvantage, additional sociocultural factors, and pain among urban AI/AN emerging adults.

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Molecular cascades and cell type-specific signatures in ASD revealed by single-cell genomics.

Science

May 2024

Program in Neurobehavioral Genetics and Center for Autism Research and Treatment, Semel Institute, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA 90095, USA.

Genomic profiling in postmortem brain from autistic individuals has consistently revealed convergent molecular changes. What drives these changes and how they relate to genetic susceptibility in this complex condition are not well understood. We performed deep single-nucleus RNA sequencing (snRNA-seq) to examine cell composition and transcriptomics, identifying dysregulation of cell type-specific gene regulatory networks (GRNs) in autism spectrum disorder (ASD), which we corroborated using single-nucleus assay for transposase-accessible chromatin with sequencing (snATAC-seq) and spatial transcriptomics.

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Single-cell genomics and regulatory networks for 388 human brains.

Science

May 2024

Program in Computational Biology and Bioinformatics, Yale University, New Haven, CT 06520, USA.

Single-cell genomics is a powerful tool for studying heterogeneous tissues such as the brain. Yet little is understood about how genetic variants influence cell-level gene expression. Addressing this, we uniformly processed single-nuclei, multiomics datasets into a resource comprising >2.

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Developmental isoform diversity in the human neocortex informs neuropsychiatric risk mechanisms.

Science

May 2024

Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA.

RNA splicing is highly prevalent in the brain and has strong links to neuropsychiatric disorders; yet, the role of cell type-specific splicing and transcript-isoform diversity during human brain development has not been systematically investigated. In this work, we leveraged single-molecule long-read sequencing to deeply profile the full-length transcriptome of the germinal zone and cortical plate regions of the developing human neocortex at tissue and single-cell resolution. We identified 214,516 distinct isoforms, of which 72.

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Few neuropsychiatric disorders have replicable biomarkers, prompting high-resolution and large-scale molecular studies. However, we still lack consensus on a more foundational question: whether quantitative shifts in cell types-the functional unit of life-contribute to neuropsychiatric disorders. Leveraging advances in human brain single-cell methylomics, we deconvolve seven major cell types using bulk DNA methylation profiling across 1270 postmortem brains, including from individuals diagnosed with Alzheimer's disease, schizophrenia, and autism.

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Confidence in providing methadone maintenance treatment of primary care providers in Vietnam.

Addict Sci Clin Pract

May 2024

Center for Training and Research On Substance Abuse, HIV/AIDS, Hanoi Medical University, No 1, Ton That Tung Street, Dong Da District, Hanoi, Vietnam.

Background: Delivering methadone treatment in community health facilities by primary care providers is a task-shifting strategy to expand access to drug use treatment, especially in rural mountainous areas. This study aims to investigate factors related to confidence in providing methadone treatment among primary care providers in Vietnam to inform good practice development.

Methods: We conducted a cross-sectional survey with 276 primary care providers who were physicians, physician assistants, nurses, pharmacists or dispensing staff from 67 communes in a mountainous province in Northern Vietnam.

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Tai Chi compared with cognitive behavioral therapy and the reversal of systemic, cellular and genomic markers of inflammation in breast cancer survivors with insomnia: A randomized clinical trial.

Brain Behav Immun

August 2024

Cousins Center for Psychoneuroimmunology (MRI, DH, RO, CC, NS, ECB, JEB, SC), UCLA Semel Institute for Neuroscience, Department of Psychiatry and Biobehavioral Sciences (MRI, RO, ECB, SC), UCLA David Geffen School of Medicine (DH), Department of Psychology (JEB), University of California, Los Angeles, United States. Electronic address:

Background: Insomnia contributes to inflammation in breast cancer survivors. This study evaluates whether insomnia treatment reverses inflammation in breast cancer survivors with insomnia.

Methods: Participants (n = 90) were randomized to 3 months of Tai Chi (n = 45) or cognitive behavioral therapy for insomnia (CBT-I)(n = 45), and followed for one year post-intervention to 15 month endpoint.

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Stimulus-specific enhancement in mouse visual cortex requires GABA but not VIP-peptide release from VIP interneurons.

J Neurophysiol

July 2024

Department of Physiology and Kavli Institute For Fundamental Neuroscience, University of California San Francisco, San Francisco, California, United States.

When adult mice are repeatedly exposed to a particular visual stimulus for as little as 1 h per day for several days while their visual cortex (V1) is in the high-gain state produced by locomotion, that specific stimulus elicits much stronger responses in V1 neurons for the following several weeks, even when measured in anesthetized animals. Such stimulus-specific enhancement (SSE) is not seen if locomotion is prevented. The effect of locomotion on cortical responses is mediated by vasoactive intestinal peptide (VIP) positive interneurons, which can release both the peptide and the inhibitory neurotransmitter GABA.

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