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The blood proteome holds great promise for precision medicine but poses substantial challenges due to the low abundance of most plasma proteins and the vast dynamic range of the plasma proteome. Here we address these challenges with NUcleic acid Linked Immuno-Sandwich Assay (NULISA™), which improves the sensitivity of traditional proximity ligation assays by ~10,000-fold to attomolar level, by suppressing assay background via a dual capture and release mechanism built into oligonucleotide-conjugated antibodies. Highly multiplexed quantification of both low- and high-abundance proteins spanning a wide dynamic range is achieved by attenuating signals from abundant targets with unconjugated antibodies and next-generation sequencing of barcoded reporter DNA. A 200-plex NULISA containing 124 cytokines and chemokines and other proteins demonstrates superior sensitivity to a proximity extension assay in detecting biologically important low-abundance biomarkers in patients with autoimmune diseases and COVID-19. Fully automated NULISA makes broad and in-depth proteomic analysis easily accessible for research and diagnostic applications. Unlocking the blood proteome requires exquisite sensitivity and multiplexing to detect low and high abundance proteins simultaneously. Here the authors describe a 200-plex immunoassay with attomolar sensitivity to detect important low abundance proteins in inflammatory diseases and COVID-19.

The blood proteome holds great promise for precision medicine but poses substantial challenges due to the low abundance of most plasma proteins and the vast dynamic range across the proteome. We report a novel proteomic technology - NUcleic acid Linked Immuno-Sandwich Assay (NULISA™) - that incorporates a dual capture and release mechanism to suppress the assay background and improves the sensitivity of the proximity ligation assay by over 10,000-fold to the attomolar level. It utilizes pairs of antibodies conjugated to DNA oligonucleotides that enable immunocomplex purification and generate reporter DNA containing target- and sample-specific barcodes for a next-generation sequencing-based, highly multiplexed readout. A 200-plex NULISA targeting 124 cytokines and chemokines and 80 other immune response-related proteins demonstrated superior sensitivity for detecting low-abundance proteins and high concordance with other immunoassays. The ultrahigh sensitivity allowed the detection of previously difficult-to-detect, but biologically important, low-abundance biomarkers in patients with autoimmune diseases and COVID-19. Fully automated NULISA addresses longstanding challenges in proteomic analysis of liquid biopsies and makes broad and in-depth proteomic analysis accessible to the general research community and future diagnostic applications.The blood proteome holds great promise for precision medicine but poses substantial challenges due to the low abundance of most plasma proteins and the vast dynamic range across the proteome. We report a novel proteomic technology - NUcleic acid Linked Immuno-Sandwich Assay (NULISA™) - that incorporates a dual capture and release mechanism to suppress the assay background and improves the sensitivity of the proximity ligation assay by over 10,000-fold to the attomolar level. It utilizes pairs of antibodies conjugated to DNA oligonucleotides that enable immunocomplex purification and generate reporter DNA containing target- and sample-specific barcodes for a next-generation sequencing-based, highly multiplexed readout. A 200-plex NULISA targeting 124 cytokines and chemokines and 80 other immune response-related proteins demonstrated superior sensitivity for detecting low-abundance proteins and high concordance with other immunoassays. The ultrahigh sensitivity allowed the detection of previously difficult-to-detect, but biologically important, low-abundance biomarkers in patients with autoimmune diseases and COVID-19. Fully automated NULISA addresses longstanding challenges in proteomic analysis of liquid biopsies and makes broad and in-depth proteomic analysis accessible to the general research community and future diagnostic applications.

Increases in dopamine and glutamate transmission in the nucleus accumbens independently promote the reinstatement of cocaine seeking, an animal model of relapse. Here we have tested whether cocaine reinstatement in rats depends on interactions between accumbal dopamine and glutamate systems that are mediated by Ca 2+ /calmodulin-mediated kinase II (CaMKII). We show that stimulation of D1-like dopamine receptors in the nucleus accumbens shell reinstates cocaine seeking by activating L-type Ca 2+ channels and CaMKII. Cocaine reinstatement is associated with D1-like dopamine receptor–dependent increases in accumbens shell CaMKII phosphorylated on Thr286 and glutamate receptor 1 (GluR1) phosphorylated on Ser831 (a known CaMKII phosphorylation site), in addition to increases in cell-surface expression of GluR1-containing AMPA receptors in the shell. Consistent with these findings, cocaine reinstatement is attenuated by intra-shell administration of AAV10-GluR1-C99, a vector that impairs the transport of GluR1-containing AMPA receptors. Thus, CaMKII may be an essential link between accumbens shell dopamine and glutamate systems involved in the neuronal plasticity underlying cocaine craving and relapse.

Though the importance of physician non-technical (NT) skills for safe patient care is recognized, NT skills of medical students, our future physicians, has received little attention. This study aims to investigate the relationship of medical student NT skills and clinical performance during acute care team simulation (ACTS). Forty-one medical students participated in ACTS. A nurse confederate facilitated and evaluated clinical performance. Two raters assessed participants’ NT skills using an adapted NT assessment tool and overall NT skills score was calculated. Regressions predicting clinical performance using NT constructs were conducted. Overall NT skills score significantly predicted students’ clinical performance (r2 = 0.178, p = 0.006). Four of the five individual NT constructs also significantly predicted performance: communication (r2 = 0.120, p = 0.027), situation awareness (r2 = 0.323, p < 0.001), leadership (r2 = 0.133, p = 0.019), and decision making (r2 = 0.163, p = 0.009). Medical student NT skills can predict clinical performance during ACTS. NT skills assessments can be used for targeted education for better feedback to students. •Developed an assessment tool of medical student non-technical skills (NTS).•Found correlation between simulated clinical performance and NTS scores.•Established fair to moderate intra-class correlation of tool between raters.

A growing number of studies have examined alterations in white matter organization in people with posttraumatic stress disorder (PTSD) using diffusion MRI (dMRI), but the results have been mixed which may be partially due to relatively small sample sizes among studies. Altered structural connectivity may be both a neurobiological vulnerability for, and a result of, PTSD. In an effort to find reliable effects, we present a multi-cohort analysis of dMRI metrics across 3047 individuals from 28 cohorts currently participating in the PGC-ENIGMA PTSD working group (a joint partnership between the Psychiatric Genomics Consortium and the Enhancing NeuroImaging Genetics through Meta-Analysis consortium). Comparing regional white matter metrics across the full brain in 1426 individuals with PTSD and 1621 controls (2174 males/873 females) between ages 18–83, 92% of whom were trauma-exposed, we report associations between PTSD and disrupted white matter organization measured by lower fractional anisotropy (FA) in the tapetum region of the corpus callosum (Cohen’s d = −0.11, p = 0.0055). The tapetum connects the left and right hippocampus, for which structure and function have been consistently implicated in PTSD. Results were consistent even after accounting for the effects of multiple potentially confounding variables: childhood trauma exposure, comorbid depression, history of traumatic brain injury, current alcohol abuse or dependence, and current use of psychotropic medications. Our results show that PTSD may be associated with alterations in the broader hippocampal network.

Estimates suggest that 6.2 million Americans aged ≥65 years are living with Alzheimer dementia in 2021, and by 2060, this number could more than double to 13.8 million. As a result, public health officials anticipate a greater need for caregivers of persons with Alzheimer disease or related dementia and support resources for both people living with dementia and their caregivers. Despite the growing need for dementia caregiver support services, there is a lack of consensus regarding how to tailor these services to best meet the heterogeneous needs of individual caregivers. To fill this gap, Care to Plan (CtP), a web-based tool for caregivers of people living with dementia, was developed to provide tailored support recommendations to dementia caregivers. The aim of this study is to formally explore the feasibility, acceptability, and utility of CtP for 20 family members of people living with dementia within a health system over a 1-month time period using a mixed methods parallel convergent design. A moderately sized health system in the mid-Atlantic region was selected as the site for CtP implementation, where 20 caregivers who were family members of people living with dementia were enrolled. The web-based CtP tool was used by caregivers and facilitated by a health care professional (ie, a senior care navigator [SCN]). Caregivers were given a 21-item review checklist to assess barriers and facilitators associated with reviewing CtP with an SCN. Following the 21-item review checklist, semistructured telephone interviews, which included 18 open-ended questions, focused on the facilitators of and barriers to CtP implementation and recommendations for future implementation. Quantitative results suggested that 85% (17/20) of caregivers indicated that CtP was helpful and 90% (18/20) would recommend CtP to someone in a similar situation. The qualitative analysis identified 4 themes regarding facilitators of and barriers to implementation: caregiver factors, SCN factors, CtP tool system factors, and recommendations and resources factors. CtP was found to be not only feasible but also a valuable tool for caregivers seeking resources for themselves and their people living with dementia. Long-term evaluation findings aim to generate results on how CtP can be integrated into care plans for caregivers and how SCNs can provide additional support for caregivers of people living with dementia over an extended period.

PurposeTo evaluate the impact of timing of blood transfusion in patients with upper tract urothelial carcinoma (UTUC) treated with radical nephroureterectomy (RNU).MethodsOutcomes of consecutive patients with UTUC treated with RNU were analyzed. Clinicopathologic factors were compared using Fisher’s exact test or the Wilcoxon rank-sum test between patients who received any transfusion and no transfusion, and between patients receiving intraoperative transfusion only and patients receiving no transfusion. Cancer-specific and overall survival were estimated and multivariable analyses were performed to assess the impact of timing of transfusion on clinical outcomes.ResultsAmong 402 patients included in this study, 71 (17.6%) patients received a transfusion at any point and 27 (6.7%) patients received an intraoperative blood transfusion. Transfusion at any time, patient comorbidity, high grade, advanced stage, positive surgical margins, low preoperative hemoglobin, longer operative duration, and increased blood loss were significantly associated with cancer-specific survival (DSS) on univariable analysis (HR 1.85, 95% CI 1.20–2.85, p < 0.005). In the multivariable analysis, transfusion at any point was not a prognostic factor (HR 1.00, 95% CI 0.60–1.68, p = 0.99). When examining intraoperatively transfusion only, transfusion was significantly associated with DSS (HR 1.91, 95% CI 1.01–3.59, p = 0.045) but no longer significant in multivariable analysis (HR 0.72, 95% CI 0.32–1.65, p = 0.440).ConclusionsOur study indicates that the administration of blood transfusion either intraoperatively or postoperatively is not associated with clinical or oncological outcomes in patients with upper tract urothelial carcinoma when adjusted for other factors in multivariable analysis. Further study is required.

Abstract Caregivers of persons living with Alzheimer's disease and Alzheimer's disease-related dementias (PLWD; AD/ADRD) benefit from unique interventions to address their different needs. While information on which interventions best meet specific needs exists, less is known about how to match caregivers with those interventions. To address this research gap, we tested Care to Plan (CtP) within a large healthcare system. After care navigators guided caregivers through twenty CtP tailoring questions to identify caregivers' greatest needs, the online tool provided the intervention type best suited to meet their needs, along with region-specific information on available programs. This mixed methods analysis evaluated the utility of the CtP tool with 20 family caregivers of PLWD after a 1 month follow-up. Most caregivers agreed that the CtP tool was helpful (85%) and would recommend the tool to other caregivers (90%). Caregivers also said they valued being able to discuss the CtP recommendations with the care navigator (95%). However, only 65% said they found services that met their needs or planned on using services recommended by CtP. Interview data indicate time constraints and restricted availability of resources due to COVID-19 precautions reduced caregivers' abilities to pursue some recommendations. In addition, the stage of dementia experienced by their care recipient may explain why others found CtP less useful. However, these caregivers noted the potential utility of the resources for their future care planning needs. A larger evaluation of the CtP tool within the healthcare system is ongoing.