91 results match your criteria: "Oregon Health and Science University Hospital[Affiliation]"

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Radiology

July 2023

From the Division of Abdominal Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, 55 Fruit St, White 270, Boston, MA 02114 (N.C.); Department of Radiology, Oregon Health and Science University/Hospital Dotter Interventional Institute, Portland, Ore (P.L.); and Institute for Diagnostic and Interventional Radiology, University of Cologne, Germany (S.L.).

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With lung cancer remaining a challenging disease, new approaches to biomarker discovery and therapy development are needed. Recent immunogenomics, adaptive immune receptor approaches have indicated that it is very likely that B cells play an important role in mediating better overall outcomes. As such, we assessed physicochemical features of lung adenocarcinoma resident IGL complementarity determining region-3 (CDR3) amino acid (AA) sequences and determined that hydrophobic CDR3 AA sequences were associated with a better disease-free survival (DFS) probability.

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Introduction: One of the most pressing goals for cancer immunotherapy at this time is the identification of actionable antigens.

Methods: This study relies on the following considerations and approaches to identify potential breast cancer antigens: (i) the significant role of the adaptive immune receptor, complementarity determining region-3 (CDR3) in antigen binding, and the existence cancer testis antigens (CTAs); (ii) chemical attractiveness; and (iii) informing the relevance of the integration of items (i) and (ii) with patient outcome and tumor gene expression data.

Results: We have assessed CTAs for associations with survival, based on their chemical complementarity with tumor resident T-cell receptor (TCR), CDR3s.

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We assessed the T-cell receptor gamma (TRG) recombination reads from the cancer genome atlas melanoma tumor exome files and the TRG recombination reads from an independent, melanoma exome file dataset, from the Moffitt Cancer Center. TRG complementarity determining region-3 (CDR3) amino acid (AA) sequences were assessed for chemical complementarity to cancer testis antigens, with such complementarity for FAM133A and CRISP2 associated with better survival probabilities for both datasets. These results, along with related TRG CDR3 AA chemical feature assessments provided in this report, have indicated opportunities for melanoma patient stratifications based on the recovery of TRG recombination reads from both tumor and blood samples, and the results may point towards novel, effective melanoma antigens.

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Post-cholecystectomy syndrome (PCS) is a well-documented complication of incomplete cholecystectomy. The etiology is often post-surgical chronic inflammation from unresolved cholelithiasis, which is secondary to anatomical abnormalities, including a retained gallbladder or a large cystic duct remnant (CDR). An exceedingly rare consequence is retained gallstone fistulization into the gastrointestinal tract.

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Background: Surgical management of isolated tricuspid regurgitation (TR) is associated with high morbidity and mortality, thereby creating a significant need for a lower-risk transcatheter solution.

Objectives: The single-arm, multicenter, prospective CLASP TR (Edwards PASCAL TrAnScatheter Valve RePair System in Tricuspid Regurgitation [CLASP TR] Early Feasibility Study) evaluated 1-year outcomes of the PASCAL transcatheter valve repair system (Edwards Lifesciences) to treat TR.

Methods: Study inclusion required a previous diagnosis of severe or greater TR and persistent symptoms despite medical treatment.

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Introduction: Glioblastoma (GBM) is the most aggressive primary brain tumor in adults. Despite a growing understanding of glioblastoma pathology, the prognosis remains poor.

Methods: In this study, we used a previously extensively benchmarked algorithm to retrieve immune receptor (IR) recombination reads from GBM exome files available from the cancer genome atlas.

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Introduction: There remains a lack of knowledge regarding the effects of the intratumor microbiome on the tumor immune milieu. We aimed to investigate whether intratumoral bacterial RNA sequence abundance in gastric and esophageal cancers is associated with T-cell infiltrate features.

Methods: We assessed cases representing the stomach adenocarcinoma (STAD) and esophageal cancer (ESCA) databases of The Cancer Genome Atlas.

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Background/aim: The recombination of V, D, and J immunoglobulin (IG) gene segments leads to many variations in the amino acids (AAs) encoded at that site, the complementarity determining region-3 (CDR3). Thus, cancer patients may have varying degrees of CDR3 AA binding specificity for cancer proteases, for example, matrix metalloproteinase 2 (MMP2). MMP2 in breast cancer has been found to contribute to metastasis and is used as a marker for tumor staging.

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Objective: Unintentional injuries remain a leading cause of death for children and adolescents older than 1 year. Injury prevention has long been a cornerstone of anticipatory guidance. Previous studies have established the sustained efficacy of injury prevention anticipatory guidance in pediatric primary care.

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Radiology

January 2023

From the Department of Radiology, Oregon Health and Science University Hospital Dotter Interventional Institute, 3181 SW Sam Jackson Park Rd, Portland, Oregon 97239 (P.L.); Institute for Diagnostic and Interventional Radiology, University of Cologne, Germany (S.L.); Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA (N.C, S.I.L.); Department of Radiology, New York University School of Medicine, New York, NY (L.M.).

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Radiology

February 2023

From the Institute for Diagnostic and Interventional Radiology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Kerpener Straße 62, 50937 Cologne, Germany (S.L.); Oregon Health and Science University Hospital Dotter Interventional Institute, Portland, OR (P.L.); and the Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114 (N.C., S.I.L.).

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Ovarian cancer continues to present significant challenges for early detection and treatment, indicating a need for novel approaches to improve disease outcomes. In this report, we applied a previously described algorithm for detecting chemical complementarity between candidate cancer antigens and complementarity determining region-3 (CDR3) amino acid sequences from tumor resident T-cell receptors. Current literature indicates an association between high CDR3-cancer antigen complementarity and improved survival outcomes.

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Relationship Between Preexisting Cardiovascular Disease and Death and Cardiovascular Outcomes in Critically Ill Patients With COVID-19.

Circ Cardiovasc Qual Outcomes

October 2022

Division of Cardiology, Department of Medicine (A.V., E.A., T.C., M.P., P.O., K.P., P.B., I.K., E.M., K.E., S.S.H.), University of Michigan, Ann Arbor.

Article Synopsis
  • Preexisting cardiovascular disease (CVD) was examined to see if it impacted in-hospital death and cardiovascular events among critically ill COVID-19 patients, utilizing data from 68 U.S. hospitals during the early pandemic stages.
  • Out of 5,133 patients studied, 22.9% had CVD, with a 34.6% death rate and 17.9% experiencing cardiovascular events; however, CVD itself did not significantly predict cardiovascular events.
  • Myocardial injury upon ICU admission was strongly linked to higher odds of both death and cardiovascular events, indicating that factors such as this injury were more critical in determining the outcomes than CVD alone.
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Cancer testis antigens have been of interest as possible targets for cancer immunotherapies. To better understand the opportunities for the use of such immunotherapy targets, we used a chemical complementarity scoring algorithm and an original web tool to establish aspects of electrostatic complementarity of the CTAs, MAGEA3 and MAGEA6, with melanoma specimen resident, T-cell receptor (TCR) complementarity determining region 3 (CDR3) amino acid sequences. Greater electrostatic complementarity between T-cell receptor CDR3 and tumor CTAs MAGEA3/6 was associated with a greater probability of overall survival, for both the cancer genome atlas and Moffitt Cancer Center samples; and was associated with high levels of T-cell cytotoxicity-related gene expression.

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Background: Small reference vessel diameters (RVDs) are a predictor of ischemic events after coronary stenting. Among patients at high bleeding risk (HBR) precluding long-term dual antiplatelet therapy (DAPT), those with small vessel disease (SVD) constitute an especially high-risk subgroup. Here, we evaluated the results of a durable-polymer, coronary zotarolimus-eluting stent (ZES) for the treatment of patients with SVD at HBR with 1-month DAPT.

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Tumor Resident, B-Cell Receptor Chemical Characteristics Associated with Better Overall Survival for Neuroblastoma.

J Mol Neurosci

September 2022

Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, 12901 Bruce B. Downs Bd. MDC7, Tampa, FL, USA.

Pediatric neuroblastoma (NBL) is one of the most common pediatric cancers, and it can often be aggressive. Genetic and demographic factors can correlate with the severity of NBL, but the variations in the B-cell receptors (BCRs) or immunoglobulin proteins present in the NBL tumors, and their relationships to survival, are not well understood. BCRs contain variations in their complementary determining region-3 (CDR3s) amino acid sequences, due to variable recombinations of the V- and J-gene segments.

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Background: Despite the fact that only modest adaptive immune system related approaches to treating Alzheimer's disease (AD) are available, an immunogenomics approach to the study of AD has not yet substantially advanced.

Objective: Thus, we sought to better understand adaptive immune receptor chemical features in the AD setting.

Methods: We characterized T-cell receptor alpha (TRA) complementarity determining region-3 (CDR3) physicochemical features and identified TRA CDR3 homology groups, represented by TRA recombination reads extracted from 2,665 AD-related, blood- and brain-derived exome files.

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Segmental chromosome duplications are an important evolutionary mechanism to produce new gene functions. Once an initial duplication takes place, the probability of a second event (structural change) increases. Segmental duplications (SDs) occur in many sizes and configurations.

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The evaluation of physicochemical characteristics of extensive adaptive immune receptor (IR) recombination sequence collections has led to the discovery of many correlations of those sequences and a variety of diseases, including cancer. In the cancer setting, these evaluations have recently focused on the adaptive IR, complementarity determining region-3 (CDR3) amino acid (AA) sequences, which play a major role in antigen binding. For example, the chemical complementarities of the tumor resident, CDR3 AA sequences and the BRAFV600E mutant, common in melanoma, have proved informative with regard to outcomes.

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Introduction: The recovery of adaptive immune receptor (IR) recombination reads from tumour-derived genomics files has advanced the understanding of the immune system's interaction with cancer. This approach has been largely limited to solid tumours, where genomics file preparation allows for the recovery of adaptive IR reads corresponding to the T-cells and B-cells found in the solid tumour microenvironment. In this study, we sought to determine whether IR recombination reads from liquid tumour genomics files could also be informative.

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Article Synopsis
  • A study evaluated the effectiveness of COVID-19 vaccines in preventing hospitalizations among adults from March to August 2021, comparing hospitalized patients to non-infected controls.
  • Vaccine effectiveness was found to be 96% for healthy individuals without chronic conditions and 83% for those with three or more medical conditions.
  • The effectiveness of the vaccine did not significantly differ between younger adults (18-64 years) and older adults (65 years and above).
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