Səhifə 1 dan 63 nəticələr
In addition to the well-known teratogenic effect of thalidomide, previous studies have revealed mild immunosuppressive properties and, more recently, an anti-angiogenic activity. To find out more about the specificity of these effects we studied the influence of orally administered thalidomide on
Perineurial permeabilities to [3H]sucrose and [14C]dextran (MW = 70,000), and water content, conduction velocity (CV) and maximum amplitude (MAP) of the compound action potential, were determined in Wallerian degenerated nerves (sciatic or tibial) of the frog and compared with values in the
Axonotmesis of the left sciatic nerve was performed on adult male Wistar rats. T1 values of the crushed nerve samples were determined with proton magnetic resonance spectroscopy. Denervation changes of the dependent hind plantar flexor muscles were assessed with proton magnetic resonance imaging of
BACKGROUND
A new model of pain associated with an experimental peripheral mononeuropathy has stimulated interest in mechanisms of pain and their structural correlates in peripheral nerve, the site of the experimental lesion.
METHODS
The pathology of the neuropathy was studied and the results
OBJECTIVE
Wallerian degeneration, the secondary degeneration of axons from cortical and subcortical injury, is associated with poor neurologic outcome. Since diffusion-weighted (DW) imaging is sensitive to early changes of cytotoxic edema, DW imaging may depict the acute injury to descending white
Sciatic nerves undergoing Wallerian degeneration are subject to massive invasion by monocytes bearing Fc receptors. The present experiments were done to explore the potential role of the Fc receptors. The effect of suppressed immunoglobulin levels on the rate of Wallerian degeneration was studied in
Background: Wallerian degeneration (WD) following peripheral nerve injury (PNI) is an area of growing focus for pharmacological developments. Clinically, WD presents challenges in achieving full functional recovery following PNI, as
OBJECTIVE
It has been reported that disturbance of blood flow arising from circumferential compression of the cauda equina by surrounding tissue plays a major role in the appearance of neurogenic intermittent claudication (NIC) associated with lumbar spinal canal stenosis (LSCS). We created a model
Numerous animal studies have shown the applicability of diffusion tensor imaging (DTI) to track Wallerian degeneration that occurs after injury to the neural fiber. Non-invasive biomarkers that may differentiate the early axonal breakdown and later myelin degradation have been attributed to either
To investigate the role of MR imaging in wallerian degeneration, a series of animal models of increasingly complex peripheral nerve injury were studied by in vivo MR. Proximal tibial nerves in brown Norway rats were either crushed, transected (neurotomy), or transected and grafted with Lewis rat
Endoneurial fluid pressure (EFP) was recorded by an active, servo-null pressure system after a glass micropipette was inserted into rat sciatic nerve undergoing wallerian degeneration. The lesions were produced by crushing the left sciatic nerve of the anesthetized animal at its point of entry into
In rat sciatic nerves, the effect of Wallerian degeneration on the rate of transperineurial passage of sodium between the endoneurium and the epineurial extracellular space was investigated. In nerves transected and ligated at the sciatic notch, an in situ technique was used to measure the
In an attempt to better understand the spatial distribution of ischemic injury secondary to occlusion of major arteries, we measured nerve blood flow (NBF) and studied morphologic changes at various levels distal to the ligature site. Arterial ligation of the femoral, internal iliac, or superior
METHODS
This study is to investigate the intraradicular inflammation induced by mechanical compression using in vivo model.
OBJECTIVE
The relationship between the intraradicular edema and nerve fiber degeneration induced by mechanical compression was determined in the nerve root.
BACKGROUND
Recently
METHODS
This study was aimed at investigating changes in the dorsal horn of the lumbar cord induced by mechanical compression using an in vivo model.
OBJECTIVE
To determine the effect of axonal flow disturbance in the dorsal horns induced by nerve root compression.
BACKGROUND
Few studies have looked