Functional recovery after large excision of dorsal roots is absent because of both the limited regeneration capacity of the transected root, and the inability of regenerating sensory fibers to traverse the dorsal root entry zone. In this study, bioresorbable guidance conduits were used to repair 6-mm dorsal root lesion gaps in rats, while neurotrophin-encoding adenoviruses were used to elicit r...

In the current study, we studied the role of signal transduction in aluminum (Al(3+))-induced DNA damage and adaptive response in root cells of Allium cepa L. The root cells in planta were treated with Al(3+) (800 μM) for 3 h without or with 2 h pre-treatment of inhibitors of mitogen-activated protein kinase (MAPK), and protein phosphatase. Also, root cells in planta were conditioned with Al(3+...

BACKGROUND Our objective was to analyze the causes, timing, and results of reoperation after primary repair for acute type A dissection. METHODS One hundred and four consecutive patients underwent a reoperation after previous type A aortic dissection repair (1972 to 2008). Supracoronary ascending aorta replacement (SCAR) was commonly performed during primary repair and it was associated with ...

Background: Surgical endodontic therapy is the prescribed treatment of choice whenever the non-surgical options fail which includes the use of a root end filling material. E. faecalis is the most prevalent organism associated with the treatment failed cases Aim: The purpose of the present study was to evaluate and compare the antimicrobial efficacy of Biodentine and MTA as root end filling mate...

Noirhomme P et al. Valve sparing-root replacement with the reimplanta-tion technique to increase the durability of bicuspid aortic valve repair. David valve-sparing aortic root replacement: equivalent mid-term outcome for different valve types with or without connective tissue disorder. RS et al. Results of matching valve and root repair to aortic valve and root pathology. Repair of the bicuspi...

PURPOSE There are few studies on biomechanical evaluation of suture points in repair of root tears. The purpose of this study was to determine the point of greatest pullout strength for root tear repair. MATERIALS AND METHODS A total of 120 fresh porcine medial menisci were obtained. The red-red and red-white zones of the meniscus were divided by two lines designated as lines A and B (groups ...

A 22 year old man had a diagnosis of left ventricular aortic tunnel established during infancy. Surgical repair was deferred at that time because his severe aortic root deformity would also have required aortic valve replacement. His current lack of symptoms together with a normal exercise capacity could be used as an argument against routine early surgical repair of the tunnel, particularly wh...

Background The arterial Switch operation (ASO) is now performed routinely for the repair of transposition of the great arteries (TGA). Neo-aortic root dilatation and reduced elasticity of the ascending aorta have been shown to impact the long-term outcomes of these patients. The aim of this study was to assess the effect of the ASO with the Lecompte maneuver on the dynamic behavior and dimensio...

Valve-sparing aortic root replacement (David reimplantation) has been recently used for treating annulo-aortic ectasia (AAE), and is associated with excellent survival and a low risk of late aortic valve replacement (AVR). However, the associated long-term durability of the repair remains uncertain because of the complexity of the aortic root and valve function. Previous studies have reported t...

Uranyl nitrate inhibited root growth of Allium cepa at > or = 25 microM concentration. Fluorimetric analysis of metal uptake indicated the entry and accumulation of uranium into the root cell. Uranyl nitrate was neither clastogenic nor aneugenic as it failed to induce micronuclei significantly, but between 25 and 100 microM concentration, it increased significantly the frequency of sister chrom...