UW Neurological Surgery Recent PubMed Publications

Two cases of pineal anlage tumor with molecular analysis

3 years 8 months ago
Pineal anlage tumor is a rare pediatric tumor with clinical and histological features overlapping with pineoblastoma. Two patients with pineal anlage tumor, a 13-month-old female and an 11-month-old male, underwent subtotal resection, high-dose chemotherapy with autologous stem cell rescue, and radiation. Neither had tumor progression 50 months after diagnosis. The tumors underwent next-generation sequencing on a panel of 340 genes. Chromosomal copy gains and losses were present and differed...
Kathryn P Scherpelz

Astrocytic laminin-211 drives disseminated breast tumor cell dormancy in brain

3 years 8 months ago
Although dormancy is thought to play a key role in the metastasis of breast tumor cells to the brain, our knowledge of the molecular mechanisms regulating disseminated tumor cell (DTC) dormancy in this organ is limited. Here using serial intravital imaging of dormant and metastatic triple-negative breast cancer lines, we identify escape from the single-cell or micrometastatic state as the rate-limiting step towards brain metastasis. We show that every DTC occupies a vascular niche, with...
Jinxiang Dai

Early B-Type Natriuretic Peptide Change in HFrEF Patients Treated With Sacubitril/Valsartan: A Pooled Analysis of EVALUATE-HF and PROVE-HF

3 years 8 months ago
CONCLUSIONS: In this pooled analysis of patients with HFrEF with standard indications for Sac/Val treatment, there was no significant overall increase in BNP concentrations, and patients demonstrated increase in ucGMP regardless of the trajectory of BNP change. (Study of Effects of Sacubitril/Valsartan vs. Enalapril on Aortic Stiffness in Patients With Mild to Moderate HF With Reduced Ejection Fraction [EVALUATE-HF]; NCT02874794) (Effects of Sacubitril/Valsartan Therapy on Biomarkers, Myocardial...
Peder L Myhre

Age-At-Injury Influences the Glial Response to Traumatic Brain Injury in the Cortex of Male Juvenile Rats

3 years 8 months ago
Few translational studies have examined how age-at-injury affects the glial response to traumatic brain injury (TBI). We hypothesized that rats injured at post-natal day (PND) 17 would exhibit a greater glial response, that would persist into early adulthood, compared to rats injured at PND35. PND17 and PND35 rats (n = 75) received a mild to moderate midline fluid percussion injury or sham surgery. In three cortical regions [peri-injury, primary somatosensory barrel field (S1BF), perirhinal], we...
Tabitha R F Green

Incivility in practice - incidence and experiences of nursing students in eastern Canada: A descriptive quantitative study

3 years 8 months ago
CONCLUSIONS: Nursing students experience incivility frequently in clinical practice with serious consequences. Recommendations arising from this study encourage educators and healthcare leaders to collaborate to review, implement and evaluate curricula, policies and processes to address incivility.
Christine M MacDonald

Middle Meningeal Artery Embolization as an Adjuvant Treatment for Bilateral Chronic Subdural Hematomas From Spontaneous Intracranial Hypotension: A Case Report

3 years 8 months ago
Middle meningeal artery embolization (MMAE) is an effective initial or adjuvant treatment for chronic subdural hematomas. However, its efficacy in the setting of spontaneous intracranial hypotension has not yet been reported. We present a case of progressive bilateral chronic subdural hematomas secondary to spontaneous intracranial hypotension that failed the initial lumbar epidural blood patch. The patient underwent surgical hematoma evacuation, with adjuvant MMAE and additional epidural blood...
Guilherme Barros

Bilateral Endoscopic Intracerebral Hemorrhage Evacuations at Two Separate Time Points: A Case Report

3 years 8 months ago
In this case report, we describe bilateral endoscopic intracerebral hemorrhage (ICH) evacuations in patients presenting on temporally distinct occasions with separate, contralateral lesions. Two patients presented with spontaneous right-sided ICH and underwent endoscopic evacuations. Both patients achieved some degree of functional improvement postoperatively. Each patient then experienced a second ICH in the left hemisphere months later, and again underwent endoscopic evacuation of the...
Guilherme Barros

Mice with monoallelic <em>GNAO1</em> loss exhibit reduced inhibitory synaptic input to cerebellar Purkinje cells

3 years 8 months ago
GNAO1 encodes Gα(o), a heterotrimeric G protein α subunit in the G(i/o) family. In this report, we used a Gnao1 mouse model "G203R" previously described as a "gain-of-function" Gnao1 mutant with movement abnormalities and enhanced seizure susceptibility. Here, we report an unexpected second mutation resulting in a loss-of-function Gα(o) protein, and describe alterations in central synaptic transmission. Whole cell patch clamp recordings from Purkinje cells (PCs) in acute cerebellar slices from...
Huijie Feng

Symptom Frequency and Persistence in the First Year after Traumatic Brain Injury: A TRACK-TBI Study

3 years 8 months ago
Symptom endorsement after traumatic brain injury (TBI) is common acutely post-injury and is associated with other adverse outcomes. Prevalence of persistent symptoms has been debated, especially in mild TBI (mTBI). A cohort of participants ≥17 years with TBI (n = 2039), 257 orthopedic trauma controls (OTCs), and 300 friend controls (FCs) were enrolled in the TRACK-TBI study and evaluated at 2 weeks and 3, 6, and 12 months post-injury using the Rivermead Post-Concussion Symptoms Questionnaire...
Joan Machamer

Control of Phoma Leaf Spot and Root Decay of Table Beet in New York

3 years 8 months ago
Disease caused by Neocamarosporium betae (syn. Phoma betae, Pleospora betae) causes reductions in plant populations, foliar disease (Phoma leaf spot; PLS), and root disease and decay in table beet. Disease caused by N. betae has re-emerged as prevalent in organic table beet production in New York (NY). The disease can also cause substantial issues in conventional table beet production in cold, wet years. To evaluate in-field control options for conventional and organic table beet production,...
Sarah Jane Pethybridge

Complications associated with early cranioplasty for patients with traumatic brain injury: a 25-year single-center analysis

3 years 8 months ago
CONCLUSIONS: In this cohort of patients with TBI, early cranioplasty, including ultra-early procedures, was not associated with higher rates of complications. Early cranioplasty may confer benefits such as shorter or fewer hospitalizations, decreased financial burden, and overall improved recovery, and should be considered based on patient-specific factors.
Jessica C Eaton

The Statin Target HMG-Coenzyme a Reductase (Hmgcr) Regulates Sleep Homeostasis in <em>Drosophila</em>

3 years 8 months ago
Statins, HMG Coenzyme A Reductase (HMGCR) inhibitors, are a first-line therapy, used to reduce hypercholesterolemia and the risk for cardiovascular events. While sleep disturbances are recognized as a side-effect of statin treatment, the impact of statins on sleep is under debate. Using Drosophila, we discovered a novel role for Hmgcr in sleep modulation. Loss of pan-neuronal Hmgcr expression affects fly sleep behavior, causing a decrease in sleep latency and an increase in sleep episode...
Ahmed M Alsehli

Accurate determination of solvation free energies of neutral organic compounds from first principles

3 years 8 months ago
The main goal of molecular simulation is to accurately predict experimental observables of molecular systems. Another long-standing goal is to devise models for arbitrary neutral organic molecules with little or no reliance on experimental data. While separately these goals have been met to various degrees, for an arbitrary system of molecules they have not been achieved simultaneously. For biophysical ensembles that exist at room temperature and pressure, and where the entropic contributions...
Leonid Pereyaslavets
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