BACKGROUND C5 nerve palsy is a known complication of cervical spine surgery. The development and etiology of this complication are not completely understood. The purpose of the present study was to determine whether rotation of the cervical spinal cord predicts the development of a C5 palsy. METHODS We performed a retrospective review of prospectively collected spine registry data as well as ...

C5 convertase of the classical complement pathway is a trimolecular protein complex consisting of C4b, C2a, and C3b. In the complex there is an ester bond between C3b and C4b. We analyzed the C5 convertase formed on erythrocytes and localized the covalent binding site of C3b to a small region on C4b. The covalently linked C4b.C3b complex was purified from a detergent extract of the erythrocytes...

We recently suggested that sites of length polymorphisms in protein families (indels) might serve as useful guides for locating protein:protein interaction sites. This report describes additional site-specific mutagenesis and synthetic peptide inhibition studies aimed at testing this idea for the paralogous complement C3, C4, and C5 proteins. A series of C5 mutants was constructed by altering t...

In this paper, the attenuation coefficients of X-rays for a range voltages (20-35) kV were studied copper-based alloys (Cu + 0.05 AL 0.03 Ti) according to order (A1,A2,A3,A4,A5),by adding percentages silver (X=1,2,3,4,5)% with two particle sizes (Nano) and (Micro) alloy ( Cu92-x +5%Al +3%Ti+ Ag x) orders (B1,B2,B3,B4,B5) (C1,C2,C3,C4,C5) All sintered at (9000C) period (4) hours.The results show...

ABSTRACT: Cervical arthroplasty with disc prosthesis has been proposed as a treatment option for dogs Spondylomyelopathy. The present study developed novel vertebral dogs. Sixteen Functional Spinal Units (C5-C6) were collected from dog cadavers body weights ranging between 25 and 35 kg, their measurements used to design prosthetic disc. sizing of the was performed based on averages width, heigh...

The data presented here indicate that the C5 reaction step may proceed via the specific attachment of C5 to EAC1,4,2,3 and the formation of a hemolytically active C5 intermediate complex. During this process only a minor proportion (less than 4%) of C5 offered to EAC1,4,2,3 becomes bound, although the remaining C5 also participates in the reaction as evidenced by its inactivation in the fluid p...

OBJECTIVE Cervical spine encompasses a bridge role between the head and the lower parts of the spine and therefore has unique properties. Our aim in this study was to evaluate the cervical sagittal alignment parameters in pediatric and adult non-surgical patients and to find any differences in respect of age, sex and admission type. METHODS All patients who were admitted to emergency and neur...