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  • Ovid Technologies (Wolters Kluwer Health)  (39)
  • 2020-2024  (39)
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  • Ovid Technologies (Wolters Kluwer Health)  (39)
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  • 2020-2024  (39)
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  • 1
    In: HemaSphere, Ovid Technologies (Wolters Kluwer Health), Vol. 6 ( 2022-06), p. 1909-1910
    Type of Medium: Online Resource
    ISSN: 2572-9241
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 2922183-3
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  • 2
    In: HemaSphere, Ovid Technologies (Wolters Kluwer Health), Vol. 6 ( 2022-06), p. 868-869
    Type of Medium: Online Resource
    ISSN: 2572-9241
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 2922183-3
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  • 3
    In: Journal of the American Heart Association, Ovid Technologies (Wolters Kluwer Health), Vol. 9, No. 7 ( 2020-04-09)
    Abstract: Renal artery stenosis is a common cause of renal ischemia, contributing to the development of chronic kidney disease. To investigate the role of local CD 40 expression in renal artery stenosis, Goldblatt 2‐kidney 1‐clip surgery was performed on hypertensive Dahl salt‐sensitive rats (S rats) and genetically modified S rats in which CD 40 function is abolished ( Cd40 mutant ). Methods and Results Four weeks following the 2‐kidney 1‐clip procedure, Cd40 mutant rats demonstrated significantly reduced blood pressure and renal fibrosis in the ischemic kidneys compared with S rat controls. Similarly, disruption of Cd40 resulted in reduced 24‐hour urinary protein excretion in Cd40 mutant rats versus S rat controls (46.2±1.9 versus 118.4±5.3 mg/24 h; P 〈 0.01), as well as protection from oxidative stress, as indicated by increased paraoxonase activity in Cd40 mutant rats versus S rat controls ( P 〈 0.01). Ischemic kidneys from Cd40 mutant rats demonstrated a significant decrease in gene expression of the profibrotic mediator, plasminogen activator inhibitor‐1 ( P 〈 0.05), and the proinflammatory mediators, C‐C motif chemokine ligand 19 ( P 〈 0.01), C‐X‐C Motif Chemokine Ligand 9 ( P 〈 0.01), and interleukin‐6 receptor ( P 〈 0.001), compared with S rat ischemic kidneys, as assessed by quantitative PCR assay. Reciprocal renal transplantation documented that CD 40 exclusively expressed in the kidney contributes to ischemia‐induced renal fibrosis. Furthermore, human CD 40‐knockout proximal tubule epithelial cells suggested that suppression of CD 40 signaling significantly inhibited expression of proinflammatory and ‐fibrotic genes. Conclusions Taken together, our data suggest that activation of CD 40 induces a significant proinflammatory and ‐fibrotic response and represents an attractive therapeutic target for treatment of ischemic renal disease.
    Type of Medium: Online Resource
    ISSN: 2047-9980
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2020
    detail.hit.zdb_id: 2653953-6
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  • 4
    In: Neurology, Ovid Technologies (Wolters Kluwer Health), Vol. 96, No. 23 ( 2021-06-08), p. e2824-e2838
    Abstract: To measure the global impact of COVID-19 pandemic on volumes of IV thrombolysis (IVT), IVT transfers, and stroke hospitalizations over 4 months at the height of the pandemic (March 1 to June 30, 2020) compared with 2 control 4-month periods. Methods We conducted a cross-sectional, observational, retrospective study across 6 continents, 70 countries, and 457 stroke centers. Diagnoses were identified by their ICD-10 codes or classifications in stroke databases. Results There were 91,373 stroke admissions in the 4 months immediately before compared to 80,894 admissions during the pandemic months, representing an 11.5% (95% confidence interval [CI] −11.7 to −11.3, p 〈 0.0001) decline. There were 13,334 IVT therapies in the 4 months preceding compared to 11,570 procedures during the pandemic, representing a 13.2% (95% CI −13.8 to −12.7, p 〈 0.0001) drop. Interfacility IVT transfers decreased from 1,337 to 1,178, or an 11.9% decrease (95% CI −13.7 to −10.3, p = 0.001). Recovery of stroke hospitalization volume (9.5%, 95% CI 9.2–9.8, p 〈 0.0001) was noted over the 2 later (May, June) vs the 2 earlier (March, April) pandemic months. There was a 1.48% stroke rate across 119,967 COVID-19 hospitalizations. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection was noted in 3.3% (1,722/52,026) of all stroke admissions. Conclusions The COVID-19 pandemic was associated with a global decline in the volume of stroke hospitalizations, IVT, and interfacility IVT transfers. Primary stroke centers and centers with higher COVID-19 inpatient volumes experienced steeper declines. Recovery of stroke hospitalization was noted in the later pandemic months.
    Type of Medium: Online Resource
    ISSN: 0028-3878 , 1526-632X
    RVK:
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2021
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  • 5
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  Journal of the American Society of Nephrology Vol. 34, No. 11S ( 2023-11), p. 731-731
    In: Journal of the American Society of Nephrology, Ovid Technologies (Wolters Kluwer Health), Vol. 34, No. 11S ( 2023-11), p. 731-731
    Type of Medium: Online Resource
    ISSN: 1046-6673
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 2029124-3
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  • 6
    In: HemaSphere, Ovid Technologies (Wolters Kluwer Health), Vol. 6 ( 2022-06), p. 1334-1335
    Type of Medium: Online Resource
    ISSN: 2572-9241
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 2922183-3
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  • 7
    In: Journal of the American Heart Association, Ovid Technologies (Wolters Kluwer Health), Vol. 10, No. 19 ( 2021-10-05)
    Abstract: Patients with Duchenne muscular dystrophy (DMD) develop cardiomyopathy because of a dystrophin deficiency causing fibrofatty replacement of the myocardium. Corticosteroid use and mobility limitations place these patients at risk for increased adiposity. We sought to determine the association of adiposity with cardiovascular dysfunction in patients with DMD. Methods and Results This was a retrospective review of patients with DMD who underwent both cardiac magnetic resonance imaging and dual‐energy x‐ray absorptiometry within 1 year. The cardiac magnetic resonance imaging parameters included left ventricular ejection fraction and the presence of late gadolinium enhancement (LGE positive [LGE+]). The adiposity indices, measured by dual‐energy x‐ray absorptiometry, included percentage of body fat, whole body fat mass indexed to height, and body mass index. A total of 324 patients were identified. Fifty‐two percent had LGE+, and 36% had cardiac dysfunction (left ventricular ejection fraction 〈 55%). Patients with cardiac dysfunction had higher whole body fat mass indexed to height and body mass index on univariate analysis (mean difference between patients with and without cardiac dysfunction: +2.9 kg/m, P =0.001; and +1.5 kg/m 2 , P =0.03, respectively). whole body fat mass indexed to height remained independently associated with cardiac dysfunction on multivariable analysis after adjusting for age, LGE+, and corticosteroid duration. High whole body fat mass indexed to height and percentage of body fat were associated with LGE+ on univariate analysis (mean difference between patients with and without LGE+: +2.0 kg/m, P =0.02; and +2.4%, P =0.02, respectively). Using multivariable analysis, including age and cardiac dysfunction, high percentage of body fat remained independently associated with LGE+. Conclusions This study demonstrates an independent association of adiposity with cardiac dysfunction and LGE+ in patients with DMD. Preventing adiposity may mitigate the later development of ventricular dysfunction in DMD.
    Type of Medium: Online Resource
    ISSN: 2047-9980
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2021
    detail.hit.zdb_id: 2653953-6
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  • 8
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2023
    In:  Journal of Neuro-Ophthalmology Vol. 43, No. 3 ( 2023-09), p. 303-306
    In: Journal of Neuro-Ophthalmology, Ovid Technologies (Wolters Kluwer Health), Vol. 43, No. 3 ( 2023-09), p. 303-306
    Abstract: There is modest literature regarding fellowship applicant factors that may predict future career achievement. We aim to characterize neuro-ophthalmology fellows and identify and analyze characteristics that may predict future career trajectory. Methods: Data, including demographic information, academic background, scholarly activities, and practice information, were collected using publicly available sources, on individuals who completed neuro-ophthalmology fellowships from 2015 to 2021. Summary statistics describing the cohort were calculated. Prefellowship characteristics were compared with postfellowship characteristics to evaluate which prefellowship characteristics may predict postfellowship academic productivity and career achievement. Results: Data were collected on 174 individuals (41.6% men, 58.4% women). Sixty-five percent were residency-trained in ophthalmology, 31% neurology, 1.7% both, and 1.7% pediatric neurology. Fifty-eight percent completed residency in the US, 8% in Canada, 32% internationally, and 2% in multiple locations. Among those practicing in the US/Canada, 63.8% practice at academic centers, 35.3% private practice, and 0.9% at both. Thirty-one percent completed additional subspecialty training and 17.8% additional graduate degrees. Completion of additional fellowship training or graduate degrees, and publication of more papers before fellowship, correlated with later academic productivity. There were no significant correlations between completion of an additional fellowship or graduate degree with current practice environment or attainment of leadership roles. There were no significant correlations between total publishing productivity prefellowship and practice environment or leadership roles postfellowship. Conclusions: Additional graduate degrees/subspecialty training, and prefellowship academic productivity, correlated with later academic productivity among neuro-ophthalmologists, suggesting that these metrics may be helpful in predicting future academic performance among fellowship applicants.
    Type of Medium: Online Resource
    ISSN: 1070-8022
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2023
    detail.hit.zdb_id: 2062798-1
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  • 9
    In: Circulation, Ovid Technologies (Wolters Kluwer Health), Vol. 142, No. 10 ( 2020-09-08), p. 983-997
    Abstract: Increased fatty acid oxidation (FAO) has long been considered a culprit in the development of obesity/diabetes mellitus–induced cardiomyopathy. However, enhancing cardiac FAO by removing the inhibitory mechanism of long-chain fatty acid transport into mitochondria via deletion of acetyl coenzyme A carboxylase 2 (ACC2) does not cause cardiomyopathy in nonobese mice, suggesting that high FAO is distinct from cardiac lipotoxicity. We hypothesize that cardiac pathology–associated obesity is attributable to the imbalance of fatty acid supply and oxidation. Thus, we here seek to determine whether further increasing FAO by inducing ACC2 deletion prevents obesity-induced cardiomyopathy, and if so, to elucidate the underlying mechanisms. Methods: We induced high FAO in adult mouse hearts by cardiac-specific deletion of ACC2 using a tamoxifen-inducible model (ACC2 iKO). Control and ACC2 iKO mice were subjected to high-fat diet (HFD) feeding for 24 weeks to induce obesity. Cardiac function, mitochondria function, and mitophagy activity were examined. Results: Despite both control and ACC2 iKO mice exhibiting a similar obese phenotype, increasing FAO oxidation by deletion of ACC2 prevented HFD-induced cardiac dysfunction, pathological remodeling, and mitochondria dysfunction, as well. Similarly, increasing FAO by knockdown of ACC2 prevented palmitate-induced mitochondria dysfunction and cardiomyocyte death in vitro. Furthermore, HFD suppressed mitophagy activity and caused damaged mitochondria to accumulate in the heart, which was attenuated, in part, in the ACC2 iKO heart. Mechanistically, ACC2 iKO prevented HFD-induced downregulation of parkin. During stimulation for mitophagy, mitochondria-localized parkin was severely reduced in control HFD-fed mouse heart, which was restored, in part, in ACC2 iKO HFD-fed mice. Conclusions: These data show that increasing cardiac FAO alone does not cause cardiac dysfunction, but protects against cardiomyopathy in chronically obese mice. The beneficial effect of enhancing cardiac FAO in HFD-induced obesity is mediated, in part, by the maintenance of mitochondria function through regulating parkin-mediated mitophagy. Our findings also suggest that targeting the parkin-dependent mitophagy pathway could be an effective strategy against the development of obesity-induced cardiomyopathy.
    Type of Medium: Online Resource
    ISSN: 0009-7322 , 1524-4539
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2020
    detail.hit.zdb_id: 1466401-X
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  • 10
    Online Resource
    Online Resource
    Ovid Technologies (Wolters Kluwer Health) ; 2022
    In:  Circulation Vol. 145, No. Suppl_1 ( 2022-03)
    In: Circulation, Ovid Technologies (Wolters Kluwer Health), Vol. 145, No. Suppl_1 ( 2022-03)
    Abstract: Ling Tian, Amanda H. Anderson, Kirsten S. Dorans, Marie A. Krousel-wood, Joshua D. Bundy Introduction: Previous studies suggest cardiovascular disease (CVD) risk factors differ among women compared with men. Quantifying sex differences in the associations of risk factors for CVD mortality in US nationally representative data could aid researchers and clinicians in improving the efficiency of primordial prevention of CVD. Hypothesis: Associations of systolic blood pressure (SBP), total cholesterol, glycated hemoglobin (HbA1c), body mass index (BMI), current smoking, and predicted 10-year risk of atherosclerotic CVD with CVD mortality differ among women compared with men, and these sex differences are modified by age. Methods: Data from non-pregnant and non-breastfeeding participants aged ≥40 years from the National Health and Nutrition Examination Survey (NHANES) 1999-2006, linked to the National Death Index through December 31, 2015, were analyzed. Multivariable-adjusted Cox proportional hazards regression was used to estimate hazard ratios (95% confidence intervals) for CVD mortality. Interaction terms were used to model associations by age (40-49, 50-59, and ≥60 years) and sex (women and men) subgroups. Results: 9,486 participants (mean age, 57.7; 51.9% women) were included in the current analysis. During an average 12.3-year follow-up, we observed 807 (8.5%) CVD deaths (328 in women; 479 in men). Associations of risk factors with CVD mortality were similar among women compared with men, although they were attenuated with increasing age (Figure). Conclusions: Among both US women and men, higher levels of SBP, smoking, and predicted 10-year ASCVD risk are strongly associated with higher risk of CVD mortality. Population-level interventions targeting these risk factors as early as possible in US men and women could reduce the burden of CVD.
    Type of Medium: Online Resource
    ISSN: 0009-7322 , 1524-4539
    Language: English
    Publisher: Ovid Technologies (Wolters Kluwer Health)
    Publication Date: 2022
    detail.hit.zdb_id: 1466401-X
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