31,885 results match your criteria: "Keck School of-Medicine[Affiliation]"

Negative valence in Obsessive-Compulsive Disorder: A worldwide mega-analysis of task-based functional neuroimaging data of the ENIGMA-OCD consortium.

Biol Psychiatry

December 2024

Amsterdam UMC, Department of Anatomy & Neurosciences, Amsterdam Neuroscience, Amsterdam, The Netherlands; Amsterdam UMC, Department of Psychiatry, Amsterdam Neuroscience, Amsterdam, The Netherlands; Amsterdam UMC, Amsterdam Neuroscience, Amsterdam, The Netherlands; Amsterdam UMC, Compulsivity, Impulsivity and Attention, Amsterdam, The Netherlands.

Objective: Obsessive-compulsive disorder (OCD) is associated with altered brain function related to processing of negative emotions. To investigate neural correlates of negative valence in OCD, we pooled fMRI data of 633 individuals with OCD and 453 healthy controls from 16 studies using different negatively-valenced tasks across the ENIGMA-OCD Working-Group.

Methods: Participant data were processed uniformly using HALFpipe, to extract voxelwise participant-level statistical images of one common first-level contrast: negative vs.

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Introduction: Higher perioperative opioid use has been associated with an increase in periprosthetic joint infection, thromboembolic complications, respiratory events, gastrointestinal complications, cost, and length of stay following hip and knee arthroplasty. Limited data exists regarding the relationship between the postoperative opioid dose and complication rates following primary total shoulder arthroplasty (TSA). The purpose of this study is to investigate the relationship between perioperative opioid consumption and postoperative complications following TSA.

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Objectives: Outpatient follow-up visits are often recommended for children with ambulatory care-sensitive conditions (ACSCs) who are discharged from emergency departments or urgent care centers (acute care settings). We sought to assess whether attending a follow-up visit within 7 days is associated with seeking initial office-based care rather than acute care during a subsequent ACSC illness. Understanding this association is crucial to guide recommendations for routine short-term follow-up visits in children who seek acute care for these common conditions.

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Enhanced recovery after surgery (ERAS) protocols have informed perioperative care across multiple surgical specialties, optimizing patient outcomes through surgical stress management and accelerated recovery. This study evaluates the familiarity and adoption of ERAS elements among craniofacial and oral and maxillofacial surgeons in pediatric orthognathic surgery, a field where a formal ERAS protocol has not been established. A closed-ended survey of 102 surgeons was conducted to assess familiarity with and utilization of 14 ERAS elements.

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As demanding as dancing en pointe is, no universal standard exists to determine when a ballet dancer is ready to advance to this next level. The goal of this study was to provide preliminarily tested and reliable guidelines for a screening tool that can be used to determine (1) if a dancer is ready for pointe, (2) reasons why a dancer may not be ready, and (3) areas for improvement to guide training and preparation. Seventeen dancers aged 9 to 17 years with a minimum 4 years of ballet and who were either possibly ready for pointe or had been in pointe class less than 3 months participated in this study.

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Background: Conventional metrics such as the apnea-hypopnea index (AHI) may not fully capture the diverse clinical manifestations of obstructive sleep apnea (OSA). This study aims to establish a novel OSA subtype classification based on the patterns of apneic and hypopneic hypoxic burden (HB), a potential biomarker that more accurately reflects the severity and duration of respiratory events. We further examined the associations of these HB-based subtypes with cardiometabolic risk and brain health outcomes.

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Objectives: Urothelial carcinoma in situ (CIS) with early papillary formation is terminology sometimes used to suggest incipient high-grade papillary urothelial carcinoma (PUC) but may lead to confusion between true CIS and lateral flat spread of PUC.

Methods: It remains unclear how pathologists and urologists interpret this scenario, so a survey was circulated to 68 pathologists (group 1 = 28 academic genitourinary pathologists; group 2 = 17 pathologists with a self-reported genitourinary focus; group 3 = 23 pathologists self-reported as not genitourinary specialists) and 32 urologists.

Results: Regarding atypical urothelial lesions that appear mainly flat but contain possible papillae, group 3 was more likely to label this as CIS compared with groups 1 and 2 (35% for group 3 vs 13% for groups 1 and 2), while groups 1 and 2 more often adopted another descriptive diagnosis, such as "CIS with early papillary features" (38% for groups 1 and 2 vs 13% for group 3).

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Introduction: Rates of prenatal cannabis use (PCU) have increased in recent years. Despite evidence of developmental health consequences to offspring and birthing person, there has been a reduction in the perception of PCU-related harms. Due to the stigma and risk of legal consequences associated with disclosing PCU, individuals are often cautious to seek information from their healthcare providers.

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Therapeutic DBS for OCD Suppresses the Default Mode Network.

Hum Brain Mapp

December 2024

Weill Institute for Neurosciences, University of California, San Francisco, California, USA.

Deep brain stimulation (DBS) of the anterior limb of the internal capsule (ALIC) is a circuit-based treatment for severe, refractory obsessive-compulsive disorder (OCD). The therapeutic effects of DBS are hypothesized to be mediated by direct modulation of a distributed cortico-striato-thalmo-cortical network underlying OCD symptoms. However, the exact underlying mechanism by which DBS exerts its therapeutic effects still remains unclear.

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Heat-related mortality in Mexico: A multi-scale spatial analysis of extreme heat effects and municipality-level vulnerability.

Environ Int

December 2024

Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA, USA; Irset Institut de Recherche en Santé, Environnement et Travail, UMR-S 1085, Inserm, University of Rennes, EHESP, Rennes, France.

Understanding effects of extreme heat across diverse settings is critical as social determinants play an important role in modifying heat-related risks. We apply a multi-scale analysis to understand spatial variation in the effects of heat across Mexico and explore factors that are explaining heterogeneity. Daily all-cause mortality was collected from the Mexican Secretary of Health and municipality-specific extreme heat events were estimated using population-weighted temperatures from 1998 to 2019 using Daymet and WorldPop datasets.

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Improving PD-1 blockade plus chemotherapy for complete remission of lung cancer by nanoPDLIM2.

Elife

December 2024

UPMC Hillman Cancer Center, Department of Microbiology and Molecular Genetics, University of Pittsburgh School of Medicine, Pittsburgh, United States.

Immune checkpoint inhibitors (ICIs) and their combination with other therapies such as chemotherapy, fail in most cancer patients. We previously identified the PDZ-LIM domain-containing protein 2 (PDLIM2) as a bona fide tumor suppressor that is repressed in lung cancer to drive cancer and its chemo and immunotherapy resistance, suggesting a new target for lung cancer therapy improvement. In this study, human clinical samples and data were used to investigate genetic and epigenetic changes in lung cancer.

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Background: Burnout is among the greatest challenges facing healthcare today. Healthcare providers have been found to experience burnout at significant rates, with COVID-19 exacerbating the challenge. Burnout in the healthcare setting has been associated with decreases in job satisfaction, productivity, professionalism, quality of care, and patient satisfaction, as well as increases in career choice regret, intent to leave, and patient safety incidents.

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Background: Glossopharyngeal neuralgia (GPN) is a rare condition typically manifesting as paroxysms of sharp, lancinating pain localized to the middle ear and auditory canal, base of the tongue, tonsillar fossa, and region just inferior to the angle of the mandible. Vascular compression is a common etiology, and microvascular decompression (MVD) has been established as a safe and efficacious treatment in adults. With the exception of one report of an adult patient undergoing the procedure for symptomatology that began in adolescence, there are no published cases of MVD for GPN in pediatric patients to the author's knowledge.

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The Impacts and Consequences of Sexually Transmitted Infections in the United States.

Sex Transm Dis

December 2024

Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

Article Synopsis
  • Millions of people in the U.S. are impacted by STIs each year, leading to serious health consequences like infertility and premature births.
  • The review focuses on the epidemiology of four key STIs: C. trachomatis, N. gonorrhoeae, T. pallidum, and HSV, illustrating their effects on individuals and the healthcare system.
  • The financial burden of these infections is significant, with C. trachomatis alone causing $824 million in medical costs and substantial loss in quality-adjusted life years (QALYs) for both men and women.
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Cellular plasticity is a hallmark function of cancer, but many of the underlying mechanisms are not well understood. In this study, we identify Caveolin-1, a scaffolding protein that organizes plasma membrane domains, as a context-dependent regulator of survival signaling in Ewing sarcoma (EwS). Single cell analyses reveal a distinct subpopulation of EwS cells, which highly express the surface marker CD99 as well as Caveolin-1.

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Revealing long-range heterogeneous organization of nucleoproteins with N-methyladenine footprinting.

bioRxiv

December 2024

Department of Biochemistry and Molecular Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA 90033, USA.

A major challenge in epigenetics is uncovering the dynamic distribution of nucleosomes and other DNA-binding proteins, which plays a crucial role in regulating cellular functions. Established approaches such as ATAC-seq, ChIP-seq, and CUT&RUN provide valuable insights but are limited by the ensemble nature of their data, masking the cellular and molecular heterogeneity that is often functionally significant. Recently, long-read sequencing technologies, particularly Single Molecule, Real-Time (SMRT/PacBio) sequencing, have introduced transformative capabilities, such as N-methyladenine (6mA) footprinting.

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Programming the elongation of mammalian cell aggregates with synthetic gene circuits.

bioRxiv

December 2024

Eli and Edythe Broad CIRM Center for Regenerative Medicine and Stem Cell Research, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.

A key goal of synthetic morphogenesis is the identification and implementation of methods to control morphogenesis. One line of research is the use of synthetic genetic circuits guiding the self-organization of cell ensembles. This approach has led to several recent successes, including control of cellular rearrangements in 3D via control of cell-cell adhesion by user-designed artificial genetic circuits.

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Limited evidence exists that serves to guide the field of practice and research pertaining to the long-term issues and needs of adults with spina bifida. Understanding the lived experience of adults with spina bifida has lagged behind considerably resulting in limited evidence-based guidance for individuals with spina bifida and their families and the health care professionals who provide services to this population. Given the paucity of knowledge of the lived experience as it pertains to adulthood, this scoping review was undertaken.

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Background: Limited knowledge exists as to the supports and services young people with IDD and co-occurring mental health conditions need to transition to adult-focused health care and adulthood.

Methods: The survey findings presented were part of a larger investigation that explored these service and supports needs obtained from 144 respondents. Data reported for this investigation were obtained from 144 respondents who answered the question, "What do you think would be most helpful to assist young people with IDD and mental health conditions with the transition from child to adult health care (not including mental health care)?"Qualitative analysis based upon the social-ecological model was undertaken.

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One of the leading causes of cancer-related death is gastrointestinal cancer, which has a significant morbidity and mortality rate. Although preoperative risk assessment is essential for directing patient care, its biological behavior cannot be accurately predicted by conventional imaging investigations. Potential pathophysiological information in anatomical imaging that cannot be visually identified can now be converted into high-dimensional quantitative image features thanks to the developing discipline of molecular imaging.

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Background: Successful nipple-areolar complex (NAC) reconstruction greatly influences patient outcomes for transgender patients undergoing chest masculinization. Despite the recent rise in case volume, little is known on designing the ideal NAC that maintains its aesthetics in dynamic settings. This study aimed to examine the characteristics of male NACs and their dimensional variability to help develop guidelines on designing the neo-NAC.

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The Patients are Thriving: Further Evidence of Improved Outcomes for Women Surgeons.

Ann Surg Open

December 2024

Division of Abdominal Organ Transplantation and Hepatobiliary Surgery, Department of Surgery, Keck School of Medicine, University of Southern California, Los Angeles, CA.

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Introduction: The effects of sex and apolipoprotein E (APOE)-Alzheimer's disease (AD) risk factors-on white matter microstructure are not well characterized.

Methods: Diffusion magnetic resonance imaging data from nine well-established longitudinal cohorts of aging were free water (FW)-corrected and harmonized. This dataset included 4741 participants (age = 73.

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