Citations

Introduction: Atherosclerotic lesions preferentially form in arterial regions exposed to disturbed flow (DF), where ECs exhibit mitochondrial (mt) dysfunction, metabolic reprogramming, and senescence. Hippo pathway kinases LATS1/2 maintain EC homeostasis, but how DF–mediated LATS1/2 suppression drives EC metabolic remodeling remains unclear. Hypothesis: We propose that DF activates CD38, leading to mt dysfunction and metabolic reprogramming that promotes EC senescence and aberrant proliferation by LATS1/2 inhibition. Methods: EC-specific Lats1/2 knockout mice were generated using tamoxifen-inducible Cre systems, and DF was induced by partial carotid ligation. Murine and human plaques were analyzed using COMET™ immunofluorescence, and spatial metabolomics. Bioenergetic profiling included Seahorse XF analysis, 13 C-glucose/ 13 C-glutamine tracing, and pharmacologic modulation of CD38, mtROS, and ATP synthase. Results: Complete Lats1/2 deletion caused fatal edema and vascular leakage, while partial loss produced fragile, highly neovascularized plaques. Spatial proteomics revealed a CD38-driven senescence-associated stemness (SAS) phenotype under LATS1/2 deficiency. Metabolomics showed sulfite and taurine accumulation, consistent with SUOX deficiency. Mechanistically, CD38 suppressed SUOX, induced Complex V reverse-mode , increased succinate flux, and accelerated ATP consumption. Despite ATP depletion, glutamate metabolism and TCA cycle flux were enhanced, sustaining EC proliferation under energetic stress. LATS1/2 knockdown reduced mt respiratory capacity (lower OCR peak) without significantly increasing glycolysis, and DF suppressed both OCR and ECAR, indicating impaired energy metabolism under pathological shear stress. CD38 inhibition restored mt respiration and glycolytic capacity by preserving NAD, and rescuing LATS1/2 and DF-mediated defects. Blocking reverse-mode Complex V reduced DF- and LATS1/2-dependent EC senescence and proliferation. Conclusion: Complete LATS1/2 deletion causes fatal vascular leakage, while partial loss drives plaque formation with fragile neovessels through a CD38-dependent SAS phenotype. CD38 suppresses SUOX, induces Complex V reverse-mode , increases succinate flux, and accelerates ATP consumption, enabling EC proliferation despite energy stress. DF and LATS1/2 loss impair mt and glycolytic function, whereas CD38 inhibition restores mt respiration and reduces EC senescence and proliferation to prevent atherothrombosis in DF regions.

Background Hearing impairment (HI) has been identified as a potentially modifiable risk factor for dementia, yet its relationship with Alzheimer's disease (AD) neuropathology and the temporal directionality remain unclear, particularly in late life. Objective To examine cross-sectional and longitudinal associations between HI, clinical cognitive status, and AD biomarkers in community-dwelling older adults. Methods We included 474 DRIVES Project participants (mean age 73.5 ± 5.2 years). Hearing was assessed using the NIH Toolbox Words-in-Noise (WIN) test. Clinical cognitive status was assessed using Clinical Dementia Rating (CDR). AD biomarkers included cerebrospinal fluid (CSF) Aβ 42 /Aβ 40 , t-tau/Aβ 42 , and p-tau/Aβ 42 ratios and amyloid PET imaging. Multivariable linear, logistic, Cox proportional hazards, and Fine–Gray competing-risk models were used. Results HI was more prevalent among participants with mild cognitive impairment (MCI; defined as CDR = 0.5) than cognitively normal individuals (50% versus 24%, p < 0.001), and MCI status was independently associated with worse baseline WIN thresholds (β = 1.55 dB SNR; 95% CI 0.72–2.37). HI was not cross-sectionally associated with CSF amyloid or tau ratios or amyloid PET positivity. Longitudinally, baseline MCI was associated with a higher risk of incident HI (Cox HR = 2.63, 95% CI 1.48–4.67; Fine–Gray sHR = 2.79, 95% CI 1.06–7.40), whereas baseline HI was not associated with subsequent CDR progression. Conclusions In older adults, HI was associated with MCI but not core AD biomarkers or future CDR progression, suggesting that late-life HI may reflect cognitive vulnerability or broader brain aging rather than independently driving AD pathology.

Treatment of participants with intermediate-risk prostate cancer with focal irreversible electroporation and radiation therapy was technically feasible and showed acceptable patient-reported outcomes and no severe adverse events over 1 year.

Primary sternal osteomyelitis (PSO) is an exceptionally rare infection of the sternum, typically occurring in the context of trauma, surgery or immunocompromise. We report the case of a previously healthy adolescent boy in his second decade of life presenting with fever, chest pain and localised tenderness without any identifiable risk factors. Initial workup, including a chest X-ray and echocardiogram, was unremarkable, but persistent bacteraemia with methicillin-sensitive Staphylococcus aureus prompted further imaging. MRI revealed sternal osteomyelitis with a small parasternal abscess. The patient was successfully treated with intravenous antibiotics alone, avoiding surgical intervention. This case highlights the importance of thorough physical examination and maintaining a high index of suspicion for PSO in patients with unexplained fever and chest wall tenderness, even in the absence of traditional risk factors. Early diagnosis and targeted therapy are essential to optimise outcomes in this rare condition.

Abstract Endothelial specialization is increasingly recognized as a fundamental regulator of tissue homeostasis, yet the cellular diversity of the skeletal vasculature remains incompletely resolved. Here, we integrate large-scale single-cell transcriptomics, cross-tissue comparisons, and imaging to comprehensively define endothelial heterogeneity across the skeleton. Our analyses demonstrate that the proposed post- arterial “type R” endothelial population is not a distinct endothelial subtype but instead comprises canonical venous endothelial cells and fatty acid-handling endothelial state. RNA velocity supports a venous continuum, while the proposed type R markers FMO2, and AQP7 lack both endothelial and skeletal specificity. The fatty acid-handling endothelial state, characterized by Lpl and Cd36 is conserved across multiple skeletal sites and non-skeletal tissues, indicating a general endothelial metabolic programme. Within bone, this endothelial state expands following high-fat diet and is suppressed during injury. Together, these findings redefine skeletal endothelial heterogeneity and establish the proposed type R population as part of a venous continuum.

Objectives: Psychological health changes are known to occur during perimenopause, but the extent to which these differ from premenopause remains unclear. This study aimed to assess psychological symptoms during perimenopause compared with premenopause and evaluate differences by country. Methods: Flo app users aged 35 years or above not taking hormonal contraception or hormone therapy were included. The psychological domain of the Menopause Rating Scale (range 0-16) and symptoms within this domain of depressive mood, irritability, anxiety, and exhaustion (range 0-4 each) were evaluated. Participants in perimenopause were compared with those in premenopause (self-reported not in perimenopause or postmenopause). Results: A total of 7,975 women were included, with 2,353 in perimenopause (mean age 45 years [SD±4.5]) and 5,622 in premenopause (39 y [SD±4.0]). Psychological Menopause Rating Scale scores in the perimenopause group were significantly higher (7.3 [SD±3.56]) than in the premenopause group (4.8 [SD±3.56]; P <0.001). The individual symptoms of depressive mood, irritability, anxiety, and exhaustion were also higher in the perimenopause group ( P <0.001, for all respectively), with the largest difference being exhaustion. These findings remained after adjusting for known confounders, including an existing diagnosis of anxiety or depression. Geographic analysis included 20 countries across 6 continents, with significant differences identified between countries for the overall psychological symptom domain score and all individual symptoms. Conclusion: Significantly greater psychological symptom burden was identified in the perimenopause group compared with the premenopause group, with the greatest difference noted for the individual symptom of exhaustion. Differences in symptom burden were also identified by country.

Background: Shared Decision Making in palliative care encompassing patient-clinician collaboration has shown potential for improved patient outcomes. However, the impact of decision aids intended to support palliative care decision making discussions across clinical care settings remains uncertain. Aim: To assess the impact of shared of decision aids on decision making, clinical outcomes, and quality of life for patients with palliative care needs and their caregivers. Design: Systematic review and meta-analysis of randomized controlled trials, reported according to PRISMA, with overall evidence quality assessed using GRADE. Data sources: Ovid MEDLINE (all segments), EMBASE, Cochrane CENTRAL, Cochrane Database of Systematic Reviews, and Scopus, from inception through September 20, 2024, without restrictions on publication date, sample size, or language. Eligible studies were randomized controlled trials that included adult patients with palliative care needs or their caregivers, using any form of decision aids. Outcomes encompassed decision-related, clinical, and quality of life measures. Results: Sixteen randomized controlled trials were included. Participant ages ranged from 44 to 85 years. Predominant decision aids were videos or printed materials addressing goals of care and treatment options, with aims that included improving understanding of prognosis and supporting values clarification. Decision aids significantly improved decision-related knowledge (SMD: 0.40, 95% CI: 0.14–0.67, p = 0.003) and lowered preference for cardiopulmonary resuscitation (OR: 0.28, 95% CI: 0.20–0.40, p < 0.001). They showed no significant impact on decisional conflict, satisfaction, or regret. Conclusion: Evidence regarding the effectiveness of decision aids in palliative care decision making is limited and of low overall quality, with observed improvements primarily in patient knowledge and changes in stated treatment preferences rather than established improvements in decision quality or values-concordant care. Future research should prioritize integration into comprehensive shared decision making frameworks, cultural adaptations, and larger-scale studies to enhance patient-centered outcomes.

Abstract Epigenetic inheritance relies on the precise recycling of parental histones during DNA replication. The N-terminal region of Pol1, the catalytic subunit of DNA polymerase α, has previously been implicated in chaperoning parental histone recycling. In this study, we identify a single amino acid mutation in the C-terminal region of Saccharomyces cerevisiae Pol1 (pol1-F1396S) that destabilizes the protein and disrupts the transfer of parental histones to the lagging strand during DNA replication. As a primary consequence, pol1-F1396S cells exhibit decreased chromatin stability. Furthermore, we demonstrate that the cellular abundance—or dosage—of all three DNA polymerases (Pol α, Pol δ, and Pol ε) influences the distribution of parental histones between the leading and lagging strands, revealing a dosage-sensitive mechanism of epigenetic regulation during DNA replication.