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Proteomic insights into troponin elevation following COVID-19 infection

Background Raised cardiac troponin-I is a common finding in patients hospitalised with acute viral infections, including but not limited to COVID-19. This often occurs in the absence of overt myocardial injury presenting a challenge for interpretation. The mechanisms underlying troponin elevation are uncertain.

Methods The CISCO-19 (Cardiovascular Imaging in SARS-CoV-19) study (NCT04403607) is a prospective, multicentre cohort study, in which hospitalised PCR-confirmed COVID-19 participants (N=267) underwent multisystem evaluation at enrolment and at 28–60 days. The study incorporated plasma proteomics (SOMAscan V.4.1), cardiovascular MRI and clinical biomarkers. Of these, 211 had baseline plasma proteomic data and 185 completed follow-up sampling. Matched proteomic and imaging data were available for 155 participants (mean age: 55 years (SD 12); 43% female).

Results A high likelihood of myocarditis was identified in 13.2% (N=21/159) of participants. High-sensitivity troponin-I was modestly elevated at enrolment (median 3 ng/L; IQR 2–6; n=159). Among males (n=90), 9.3% had a high-sensitivity troponin that exceeded 34 ng/L. Among females (n=69), 4.5% exceeded 16 ng/L. Smooth muscle myosin light chain proteins were downregulated at follow-up (log2 fold change −0.12 to −0.6; all adjusted p0.02) and positively correlated with high-sensitivity troponin-I, but not N-terminal brain natriuretic peptide or cardiac MRI indices (n=155).

Association of Perinatal HIV Exposure and HIV Disease Severity With BP in Youth

RESEARCH ARTICLE: association of perinatal HIV exposure and HIV disease severity with BP in youth.

BACKGROUND: HIV infection is associated with cardiovascular events in adults. We compared mean blood pressure (BP) obtained at study visits between youth with/without perinatally acquired HIV infection and evaluated whether HIV disease severity was associated with BP. METHODS: BP was compared between participants with/without HIV in the Adolescent Master Protocol of the Pediatric HIV/AIDS Cohort Study. Marginal repeated measures analyses using generalized estimating equations evaluated the association of HIV disease severity with BP index (mean BP/95th percentile BP) and abnormal BP. RESULTS: 447 youth with HIV and 226 youth without HIV were included. Youth with HIV were more often Black non-Hispanic (66% versus 54%), had greater household income (54% versus 35%), and lower measures of adiposity than those without.

Move Reveals Its New Markerless Motion Capture System Genesis

Move, a company focused on motion capture and 3D animation, unveiled Genesis, its new high-quality markerless motion capture system, delivering data quality “comparable to optical systems alongside the reliability, security, and integration required by professional VFX, AAA gaming, and creative studios.”

This is a “foundational strategic shift” from the consumer-focused Move Pro to a dedicated enterprise ecosystem. Genesis has already replaced Move Pro on the company’s site, replacing action cameras with Z-Cam integration.

Integrative approaches to aging: Mechanisms, antiaging strategies, and emerging biomedical interventions

This imbalance results in dermal thinning, wrinkle formation, and loss of skin elasticity. Both intrinsic aging (chronological) and extrinsic aging (photoaging) contribute to collagen depletion. Studies have shown that UV-induced ROS accelerate collagen breakdown and inhibit new collagen synthesis, exacerbating visible signs of aging. [20]

Collagen is vital for skin firmness and elasticity. Aging, both intrinsic and extrinsic, leads to reduced collagen production and increased enzymatic degradation. Antiaging interventions such as retinoids, marine peptides, and nanoformulations aim to restore collagen levels and improve skin structure.

Understanding these cellular and molecular mechanisms provides the foundation for developing targeted antiaging interventions, ranging from holistic lifestyle modifications to advanced biomedical therapies.

HarmonyGNN boosts graph AI accuracy on four tough benchmarks by up to 9.6%

Researchers have demonstrated a new training technique that significantly improves the accuracy of graph neural networks (GNNs)—AI systems used in applications from drug discovery to weather forecasting. GNNs are AI systems designed to perform tasks where the input data is presented in the form of graphs. Graphs, in this context, refer largely to data structures where data points (called nodes) are connected by lines (called edges). The edges indicate some sort of relationship between the nodes. Edges can be used to connect nodes that are similar (called homophily)—but can also connect nodes that are dissimilar (called heterophily).

For example, in a graph of a neural system there would be edges between nodes representing two neurons that enhance each other, but there would also be edges between nodes that suppress each other.

Because graphs can be used to represent everything from social networks to molecular structure, GNNS are able to capture complex relationships better than many other types of AI systems.

Minimally Invasive Ablation Can Treat Small Kidney Tumors

Among patients with T1a renal cell carcinoma (T1a RCC), ablation and surgical resection showed comparable risks for tumor progression. However, ablation was associated with higher rates of local recurrence but fewer complications and shorter hospital stays than resection or nephrectomy.

“Follow-up data revealed that most local recurrences in patients who underwent ablation were successfully treated with additional ablation or surgery,” the authors wrote.

“[T]his study suggests ablation as a less invasive alternative to surgery for patients with T1a RCC, resulting in a similar high level of oncologic control,” they added.

This study was led by Johanne Ahrenfeldt, PhD, MScEng, Aarhus University Hospital, Denmark. It was published online in Radiology.

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