Conversion of Contaminated Post-Consumer Polyethylene Terephthalate into a Thermoset Alkyd Coating Using Biosourced Monomers.

The synthesis of a high-performance oxidative cross-linked thermoset alkyd coating is described that utilizes a novel recycling strategy from contaminated postconsumer waste polyethylene terephthalate (wPET). A single-stage "depolymerization-repolymerization" process has been developed that allows the exploitation of a waste stream from a commercial PET recycling process with 95% efficiency, which, when copolymerized with glycerol and tall oil fatty acid, delivers a sustainable fatty acid-functional polyester suitable for use in thermoset alkyd coatings. Physical drying challenges have been tackled via the development of a convergent polymer formulation strategy from a single source of wPET and the formulation of the resulting fatty acid-functional polymers with commercial alkyd driers, delivering a thermoset alkyd coating suitable for industrial applications.

Morbidity and Mortality of Trauma Patients 55 and Older: A Study of Nontrauma Risk Factors.

Introduction: The American College of Surgeons (ACS) recommends that special considerations be made during triage of trauma patients aged ≥55 due to an observed increase in morbidity and mortality in this population. The geriatric population aged ≥65 represents 30% of all trauma patients. Our objective was to assess which pre-existing conditions (PECs) are associated with worse outcomes in trauma patients aged ≥55. Methods: Study population was selected from the local trauma registry (2020-22). Bi-variate analysis compared PEC status with outcomes controlling for each Injury Severity Score (ISS) category. Injury Severity Score was defined as mild (1-8), moderate (9-15), severe (16-24), and critical (≥25). Results: A total of 5,168 patients were identified (54.9% female, 56.7% age ≥75, 49.1% mild injury). Patients who had chronic renal failure (CRF) were at increased odds of mortality after adjusting for mild (adjusted odds ratio [aOR]: 2.63), moderate (aOR: 2.97), severe (aOR: 2.84), and critical (aOR: 2.62) injuries. Patients who had cirrhosis or congestive heart failure (CHF) were at increased odds of mortality after adjusting for mild (aOR: 3.03, 1.61), moderate (aOR: 3.63, 2.14), and severe (aOR: 3.46, 1.93) injuries, respectively. In addition, there was a relationship between having chronic obstructive pulmonary disease (COPD), dementia, anticoagulant therapy, or diabetes with unplanned intensive care unit (ICU) admission and development of acute kidney injury (AKI). Discussion: There is an association between certain pre-exiting conditions and worse outcomes. Early identification of these factors could provide a foundation for better interdisciplinary management, prevention of complications and associated mortality.

Increased Pathologic Downstaging with Induction versus Consolidation Chemotherapy in Patients with Locally Advanced Rectal Cancer Treated with Total Neoadjuvant Therapy-A National Cancer Database Analysis.

Total neoadjuvant therapy (TNT) is the recommended treatment for locally advanced rectal cancer. The optimal sequence of TNT is debated: induction (chemotherapy first) or consolidation (chemoradiation first)? We aim to evaluate the practice patterns and clinical outcomes of total neoadjuvant therapy with either induction or consolidation regiments in the United States for patients with locally advanced rectal cancer. METHODS: This is a retrospective analysis of the National Cancer Database for patients with clinical stage II or stage III rectal cancer, diagnosed between 2006 and 2017, who underwent total neoadjuvant therapy followed by surgery. RESULTS: From 2006 to 2017, we identified 8999 patients and found that the utilization of induction chemotherapy increased from 2.0% to 35.0%. TNT resulted in pathologic downstaging 46.7% of the time and a pathologic complete response 11.6% of the time. Induction chemotherapy lead to higher pathologic downstaging (58% vs. 44.7%, p < 0.001) and pathologic complete responses (16.8% vs. 10.7%, p < 0.001). Similar trends held true in a multivariate analysis and subset analysis of stage II and III disease. CONCLUSIONS: These findings suggest that induction chemotherapy may be preferred over consolidation chemotherapy when downstaging prior to oncologic resection is desired. The optimal treatment plan for total neoadjuvant therapy is multi-factorial and requires further elucidation.

Differences in the Receipt of Regional Anesthesia Based on Race and Ethnicity in Colorectal Surgery.

BACKGROUND: Health equity in pain management during the perioperative period continues to be a topic of interest. The authors evaluated the association of race and ethnicity with regional anesthesia in patients who underwent colorectal surgery and characterized trends in regional anesthesia. METHODS: Using the American College of Surgeons National Surgical Quality Improvement Program database from 2015 to 2020, the research team identified patients who underwent open or laparoscopic colorectal surgery. Associations between race and ethnicity and use of regional anesthesia were estimated using logistic regression models. RESULTS: The final sample size was 292,797, of which 15.6% (n = 45,784) received regional anesthesia. The unadjusted rates of regional anesthesia for race and ethnicity were 15.7% white, 15.1% Black, 12.8% Asian, 29.6% American Indian or Alaska Native, 16.3% Native Hawaiian or Pacific Islander, and 12.4% Hispanic. Black (odds ratio [OR] 0.93, 95% confidence interval [CI] 0.90-0.96, p < 0.001) and Asian (OR 0.76, 95% CI 0.71-0.80, p < 0.001) patients had lower odds of regional anesthesia compared to white patients. Hispanic patients had lower odds of regional anesthesia compared to non-Hispanic patients (OR 0.72, 95% CI 0.68-0.75, p < 0.001). There was a significant annual increase in regional anesthesia from 2015 to 2020 for all racial and ethnic cohorts (p < 0.05). CONCLUSION: There was an annual increase in the use of regional anesthesia, yet Black and Asian patients (compared to whites) and Hispanics (compared to non-Hispanics) were less likely to receive regional anesthesia for colorectal surgery. These differences suggest that there are racial and ethnic differences in regional anesthesia use for colorectal surgery.

Bento: a toolkit for subcellular analysis of spatial transcriptomics data.

The spatial organization of molecules in a cell is essential for their functions. While current methods focus on discerning tissue architecture, cell-cell interactions, and spatial expression patterns, they are limited to the multicellular scale. We present Bento, a Python toolkit that takes advantage of single-molecule information to enable spatial analysis at the subcellular scale. Bento ingests molecular coordinates and segmentation boundaries to perform three analyses: defining subcellular domains, annotating localization patterns, and quantifying gene-gene colocalization. We demonstrate MERFISH, seqFISH + , Molecular Cartography, and Xenium datasets. Bento is part of the open-source Scverse ecosystem, enabling integration with other single-cell analysis tools.

Autologous Fat Grafting For Perianal Fistula in Behçet's Disease: A Case Report.

This is the first case report of a patient undergoing successful autologous fat grafting for an anal fistula in the setting of Bechet's disease. We demonstrate that this can be done safely and successfully after optimization of the underlying disease.