Background: Coronary stenting is limited by subacute thrombosis, especially in smaller-diameter vessels, in which shear rates are high. The objective of the present study was to determine whether local delivery of a new type of NO donor, the NO adduct of N,N'-dimethylhexanediamine (DMHD/NO), inhibits acute stent thrombosis (ST) at high-shear flow.
Methods And Results: Effects of local infusion of DMHD/NO; intravenous aspirin, and heparin on ST were evaluated in an ex vivo porcine AV shunt model. Nitinol stents (2 mum in diameter, n = 120) were placed in a tubular chamber and perfused with blood from pigs (n = 13) at a shear rate of 2100s-1 for 20 minutes. ST was quantified by measurement of dry thrombus weight(TW). Effects on platelet aggregation (PA), blood pressure, bleeding time, and activated clotting time (ACT) were also examined. There was a dose-dependent inhibition of ST and PA by DMHD/NO. TW was reduced by 95% (1 +/- 2 versus 16 +/- 4 mg control, mean +/- SD, P < .001), and PA was reduced by 75% (4 +/- 3 versus 14 +/- 9 omega/min control, P < .05) at the highest dose of 10 mumol/L. DMHD/NO had no effects on bleeding time, ACT, or blood pressure. In contrast, aspirin (10 mg/kg), despite inhibiting PA, had no effects on TW (12 +/- 5 versus 16 +/- 8 mg control, P = .3). Heparin (200 U/kg) reduced TW by 33% (14 +/- 4 versus 21 +/- 3 mg control, P < .05) and prolonged ACT.
Conclusions: Local delivery of DMHD/NO produced a 15-fold inhibition of acute ST at high-shear flow without producing adverse systemic hemostatic or hemodynamic effects. Thus, treatment with DMHD/NO may be an effective strategy for prevention of stent thrombosis.
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http://dx.doi.org/10.1161/01.cir.94.9.2228 | DOI Listing |
J Orthop Surg Res
January 2025
Department of Orthopedic Trauma, Beijing Jishuitan Hospital, Capital Medical University, No. 31 Xinjiekou East Street, Xicheng District, Beijing, 100035, China.
Background: Olecranon fractures account for 8 ∼ 10% of all elbow fractures and usually require surgical intervention. Tension band wiring (TBW) is considered as the standard treatment while it is associated with high re-operation rates.
Objective: This study aims to compare the functional outcomes, complications and re-operations of hook plate fixation (HPF) versus TBW in treating Mayo Type II olecranon fractures.
Thromb J
January 2025
College of Pharmacy, QU Health, Qatar University, Doha, Qatar.
Background: Nephrotic syndrome (NS) is associated with an increased risk of venous thromboembolism (VTE). Anticoagulants are widely used in the prevention of VTE in NS patients. The use of direct oral anticoagulants (DOACs) has not been studied intensively in NS patients.
View Article and Find Full Text PDFJ Orthop Surg Res
January 2025
Department of Orthopedics, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital.C.T.), Chengdu, 610041, People's Republic of China.
Background: Anterior shoulder instability with glenoid bone loss presents a challenge in orthopedic surgery. The Latarjet and iliac crest bone graft transfer (ICBGT) procedures are commonly employed for its management, but direct comparative evidence is insufficient.
Methods: Following PRISMA guidelines, a comprehensive search of PubMed, EMBASE, Cochrane Library, and Web of Science was conducted.
BMC Pediatr
January 2025
Institute of Social Medicine, Epidemiology and Health Economics, Charité - Universitätsmedizin Berlin, Luisenstr. 57, 10117, Berlin, Germany.
Background: Infections may play a role in the etiology of sudden infant death syndrome (SIDS), with Bordetella pertussis being a potential agent. The objective was to analyze the association of SIDS and infant pertussis hospitalization rates over time, comparing a previously unvaccinated population (West Germany) versus a predominantly vaccinated population (East Germany).
Methods: We calculated SIDS rates per 1000 live births per state.
BMC Pregnancy Childbirth
January 2025
Royal Hospital for Women and UNSW, School of Clinical Medicine, Level 0, Royal Hospital for Women, Barker Street (Locked Bag 2000), Sydney, NSW, 2031, Australia.
Background: Congenital heart disease (CHD) is the most common fetal malformation, and it can result first in cardiac remodeling and dysfunction and later in cardiac failure and hydrops. A limited number of studies have evaluated cardiac function in fetuses affected by CHD. Functional parameters could potentially identify fetuses at risk of cardiac failure before its development.
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