266,142 results match your criteria: "Los Angeles; and California Pacific Medical Center T.W.[Affiliation]"

Dissecting the cellular architecture and genetic circuitry of the soybean seed.

Proc Natl Acad Sci U S A

January 2025

Department of Plant Biology, College of Biological Sciences, University of California, Davis, CA 95616.

Seeds are complex structures composed of three regions, embryo, endosperm, and seed coat, with each further divided into subregions that consist of tissues, cell layers, and cell types. Although the seed is well characterized anatomically, much less is known about the genetic circuitry that dictates its spatial complexity. To address this issue, we profiled mRNAs from anatomically distinct seed subregions at several developmental stages.

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The diversity and heterogeneity of biomarkers has made the development of general methods for single-step quantification of analytes difficult. For individual biomarkers, electrochemical methods that detect a conformational change in an affinity binder upon analyte binding have shown promise. However, because the conformational change must operate within a nanometer-scale working distance, an entirely new sensor, with a unique conformational change, must be developed for each analyte.

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Cognition relies on transforming sensory inputs into a generalizable understanding of the world. Mirror neurons have been proposed to underlie this process, mapping visual representations of others' actions and sensations onto neurons that mediate our own, providing a conduit for understanding. However, this theory has limitations.

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With over 14 million people living above 3,500 m, the study of acclimatization and adaptation to high altitude in human populations is of increasing importance, where exposure to high altitude (HA) imposes a blood oxygenation and acid-base challenge. A sustained and augmented hypoxic ventilatory response protects oxygenation through ventilatory acclimatization, but elicits hypocapnia and respiratory alkalosis. A subsequent renally mediated compensatory metabolic acidosis corrects pH toward baseline values, with a high degree of interindividual variability.

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Objective: Tumor consistency, or fibrosity, affects the ability to optimally resect meningiomas, especially with recent trends evolving toward minimally invasive approaches. The authors' team previously validated a practical 5-point scale for intraoperative grading of meningioma consistency. The impact of meningioma consistency on surgical management and outcomes, however, has yet to be explored.

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Objective: The goal of this study was to compare the impact of using a lower thoracic (LT) versus upper lumbar (UL) level as the upper instrumented vertebra (UIV) on clinical and radiographic outcomes following minimally invasive surgery for adult spinal deformity.

Methods: A multicenter retrospective study design was used. Inclusion criteria were age ≥ 18 years, and one of the following: coronal Cobb angle > 20°, sagittal vertical axis > 50 mm, pelvic tilt > 20°, pelvic incidence-lumbar lordosis mismatch > 10°.

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The "" under this Perspective underline the importance of interdisciplinary collaboration and partnerships across several disciplines, such as medical science and technology, medicine, bioengineering, and computational approaches, in bridging the gap between research, manufacturing, and clinical applications. Effective communication is key to bridging team gaps, enhancing trust, and resolving conflicts, thereby fostering teamwork and individual growth toward shared goals. Drawing from the success of the COVID-19 vaccine development, we advocate the application of similar collaborative models in other complex health areas such as nanomedicine and biomedical engineering.

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Neonatal and Home-Based PT Improves Neurodevelopmental Outcomes of Preterm Infants-A Randomized Clinical Trial.

Pediatr Phys Ther

January 2025

Department of Physical Therapy, Ellmer College of Health Sciences, Macon & Joan Brock Virginia Health Sciences, Old Dominion University, Norfolk, Virginia (Dr Khurana); Department of Pediatrics, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, India (Dr Lewis); School of Exercise Science, Old Dominion University, Norfolk, Virginia (Dr Russell); Sykes Chair of Pediatric Physical Therapy, Health, and Development, University of Southern California, Division of Biokinesiology and Physical Therapy, Los Angeles, California (Dr Dusing); Department of Physiotherapy, Manipal College of Health Professions, Manipal Academy of Higher Education, Manipal, India (Dr Krishna Rao).

Purpose: Investigate the effect of structured neonatal physical therapy program (SNP) on neurodevelopmental outcomes of moderate and late preterm (MLP) infants.

Methods: Sixty MLP infants were randomly allocated to usual care (UC) or SNP. A previous publication reported the effect of neonatal component of SNP at hospital discharge.

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Rationale: Solitary fibrous tumors (SFTs) are spindle cell tumors that typically occur in the pleura and peritoneum, but very rarely in the stomach. To our best knowledge, there are only 10 cases reported in English literature. We reported a case of primary stomach SFT and summarized the characteristics of all previous cases, suggesting that pathologists and surgeons should include this disease in the differential diagnosis list of primary mesenchymal tumor of the stomach.

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From the biblical to the medieval wergild system and modern workers' compensation laws, laws about bodily damage may originate from cognitive mechanisms that capitalize on an enduring regularity: Different body parts vary in their incremental contributions to human functionality. To evaluate this hypothesis, we conducted a preregistered study with materials based on five legal codes from highly diverse cultures and historical eras: the Law of Æthelberht (Kent, approximately 600 CE), the Guta lag (Gotland, approximately 1220 CE), and workers' compensation laws from the United States, the Republic of Korea, and the United Arab Emirates; and 614 laypeople from the United States and India. The data indicate ordinal agreement in the values attached to body parts by ancient and modern lawmakers, as well as by laypeople in the United States and India.

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Human recombination-activating gene (RAG) deficiency can manifest with distinct clinical and immunological phenotypes. By applying a multiomics approach to a large group of -mutated patients, we aimed at characterizing the immunopathology associated with each phenotype. Although defective T and B cell development is common to all phenotypes, patients with hypomorphic variants can generate T and B cells with signatures of immune dysregulation and produce autoantibodies to a broad range of self-antigens, including type I interferons.

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Generative artificial intelligence (AI) models trained on natural protein sequences have been used to design functional enzymes. However, their ability to predict individual reaction steps in enzyme catalysis remains unclear, limiting the potential use of sequence information for enzyme engineering. In this study, we demonstrated that sequence information can predict the rate of the S2 step of a haloalkane dehalogenase using a generative maximum-entropy (MaxEnt) model.

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Hidradenitis Suppurativa: Radical Surgical Excisions with Staged Reconstructions: A Single-Surgeon Retrospective Review of 71 Patients.

Adv Skin Wound Care

January 2025

Abigail C. Judge, BS, is Medical Student, School of Medicine, Yale University, New Haven, Connecticut, United States. Amir H. Tahernia, MD, is Surgeon, Olympia Medical Center and Cedars-Sinai Medical Center, Los Angeles, California.

Background: Hidradenitis suppurativa is a chronic, inflammatory disease involving the pilosebaceous unit of apocrine gland-bearing skin. Wide surgical excision, wherein margins extend beyond active lesions, is considered curative.

Objective: To evaluate the safety and efficacy of wide surgical excision in the treatment of hidradenitis suppurativa.

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Importance: The prevalence of pharmacies owned by integrated insurers and pharmacy benefit managers (PBMs), or insurer-PBMs, is of growing regulatory concern. However, little is known about the role of these pharmacies in Medicare, in which pharmacy network protections may influence market dynamics.

Objective: To evaluate the prevalence of insurer-PBM-owned pharmacies and the extent to which insurer-PBMs steer patients to pharmacies they own in Medicare.

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Purpose: The double-flap technique (DFT) is an anti-reflux reconstruction procedure performed after proximal gastrectomy (PG), but its complexity and high incidence of anastomotic stenosis are problematic. We conducted this study to demonstrate the efficacy of robot-assisted DFT, with refinements, to address these issues.

Methods: Surgical outcomes were compared between the following procedures modified over time at our institution: conventional open DFT (group O, n = 16); early robotic DFT (group RE, n = 19), which follows the conventional open PG approach; and late robotic DFT (group RL, n = 21), which incorporates refinements to the early robotic DFT technique by exploiting more of the robotic capabilities available.

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Background: Long-acting injectable (LAI) antiretroviral medications are as effective as daily oral antiretroviral therapy (ART) and offer discreet, less frequent dosing. LAIs may be ideal treatment options for people who experience challenges with adherence to daily oral ART, including mobile men living with HIV (MLHIV).

Methods: We conducted a qualitative substudy within two parent trials in 24 health facilities in Malawi that enrolled MLHIV ≥15 years not on ART.

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Inorganic Mercury Pharmacokinetics in Man: A Hybrid Model.

Xenobiotica

January 2025

Department of Pharmaceutical Sciences, School of Pharmacy, Westcoast University, 590 North Vermont Avenue, Los Angeles, CA 90004.

A four-compartment model is presented that simulates inorganic mercury [Hg(II)] pharmacokinetics in blood, tissue, and excreta over a 70 day period. Simulations are validated against data collected from five human subjects, and previously analyzed (Farris, F.F.

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Controlled Nutrient Delivery to Pancreatic Islets Using Polydopamine-Coated Mesoporous Silica Nanoparticles.

Nano Lett

January 2025

Department of Radiology, Interventional Radiology Innovation at Stanford (IRIS), Stanford University School of Medicine, Palo Alto, California 94304, United States.

In this study, we designed a nanoscale platform for sustained amino acid delivery to support transplanted pancreatic islets. The platform features mesoporous silica nanoparticles (MSNPs) loaded with glutamine (G), an essential amino acid required for islet survival and function, and coated with polydopamine (PD). We investigated various PD concentrations (0.

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Optimizing Exclusion Criteria for Clinical Trials of Persistent Lyme Disease Using Real-World Data.

Healthcare (Basel)

December 2024

Union Square Medical Associates, 595 Buckingham Way, Suite 350, San Francisco, CA 94132, USA.

Background/objectives: Although eligibility criteria for clinical trials significantly impact study outcomes, these criteria are often established without scientific justification, leading to delayed recruitment, small sample sizes, and limited study generalizability. Persistent Lyme disease (PLD) presents unique challenges due to symptom variability, inconsistent treatment responses, and the lack of reliable biomarkers, underscoring the need for scientifically justified eligibility criteria.

Objective: This study examines the effects of commonly used enrollment criteria on sample yield in PLD clinical trials using real-world data (RWD) from the MyLymeData patient registry.

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Aging and chronic inflammation are associated with overabundant myeloid-primed multipotent progenitors (MPPs) amongst hematopoietic stem and progenitor cells (HSPCs). While HSC differentiation bias has been considered a primary cause of myeloid bias, whether it is sufficient has not been quantitatively evaluated. Here, we analyzed bone marrow data from the IκB- (Nfkbia+/-Nfkbib-/-Nfkbie-/-) mouse model of inflammation with elevated NFκB activity, which shows increased myeloid-biased MPPs.

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