RETROGRADE TRACING AND ELECTROPHYSIOLOGICAL FINDINGS OF COLLATERAL SPROUTING AFTER END-TO-SIDE NEURORRHAPHY

Hand Surgery ◽  
2003 ◽  
Vol 08 (02) ◽  
pp. 145-150 ◽  
Author(s):  
Ge Xiong ◽  
Lijun Ling ◽  
Ryogo Nakamura ◽  
Yasuo Sugiura
Keyword(s):  
Normal Control ◽  
Motor Nerve ◽  
Sensory Nerve ◽  
Retrograde Tracing ◽  
Motor Nerve Conduction Velocity ◽  
Double Labelling ◽  
Collateral Sprouting ◽  
Electrophysiological Findings ◽  
End To End ◽  
Diamidino Yellow

The aim of this study was to seek more potent evidences of collateral sprouting for both motor and sensory nerve fibres after end-to-side neurorrhaphy using a modified double-labelling retrograde tracing method and to investigate the function of regenerated motor axons with electrophysiological evaluation. Four groups (n=4 for each group) were used: end-to-end coaptation (six months postoperatively), end-to-side coaptation (four months and six months postoperatively) and normal control. Two fluorescent tracers (true blue and diamidino yellow) were applied to the proximal ends of tibial and common peroneal nerves, respectively after four or six months of nerve coaptation. Five days later, we only found single-labelled motor and sensory neurons in the normal and end-to-end coaptation groups, while some dual-labelled neurons can be identified in end-to-side coaptation groups. Four months after surgery, the motor nerve conduction velocity in end-to-side coaptation was significantly slower than in the normal control. But no difference was found in the sixth month. These results suggest that end-to-side neurorrhaphy can induce the functional collateral sprouting of both motor and sensory axons in the peripheral nerve.

Enhancement of Neuromuscular Recovery after Nerve Repair in Primates

1987 ◽  
Vol 12 (2) ◽  
pp. 211-217
Author(s):  
MARIE A. BADALAMENTE ◽  
L. C. HURST ◽  
S. B. PAUL ◽  
A. STRACHER
Keyword(s):  
Protease Inhibitor ◽  
Functional Recovery ◽  
Nerve Conduction Velocity ◽  
Motor Nerve ◽  
Nerve Repair ◽  
Sensory Nerve ◽  
Motor Nerve Conduction Velocity ◽  
Primate Model ◽  
Once Daily ◽  
Motor Nerve Conduction

This investigation describes the use of the calcium-activated protease inhibitor, leupeptin, as an adjunctive therapy to the microsurgical repair of median nerves in a primate model. Our results indicate that leupeptin facilitates morphological recovery in denervated thenar muscles and in distal sensory and mixed motor-sensory nerve trunks and functional recovery measured by motor nerve conduction velocity. Toxicological testing of leupeptin showed that, when administered at a dose of 12mg/kg, intramuscularly, once daily, haematological and clotting profiles were not adversely affected.

Control of Uremic Neuropathy by Equilibrium Peritoneal Dialysis

1984 ◽  
Vol 7 (2) ◽  
pp. 97-100 ◽  
Author(s):  
U. Buoncristiani ◽  
G. Mazzotta ◽  
C. Carobi ◽  
V. Gallai ◽  
M. Cozzari ◽  
...  
Keyword(s):  
Peritoneal Dialysis ◽  
Conduction Velocity ◽  
Nerve Conduction ◽  
Nerve Conduction Velocity ◽  
Motor Nerve ◽  
Sensory Nerve ◽  
Motor Nerve Conduction Velocity ◽  
Lower Limbs ◽  
Motor Nerve Conduction ◽  
Extracorporeal Dialysis

Motor nerve conduction velocity (MNCV), sensory nerve conduction velocity (SNVC) and distal motor latencies times (DMLT) were evaluated both in upper and lower limbs in three groups of 15 patients of comparable age, treated respectively by extracorporeal dialysis (HD), continuous ambulatory peritoneal dialysis (CAPD) and combined peritoneal dialysis (CPD) for comparable sufficiently long periods. Moreover, MNCV was monitored longitudinally in two groups of patients shifted from CAPD to HD and vice versa. The results show a significant superiority of peritoneal dialysis and particularly of CAPD with respect to HD in controlling uremic neuropathy.

The application of Sheng-Mai Injection in diabetes mellitus and related complications: a systematic review and meta-analysis

2021 ◽  
Vol 21 ◽  
Author(s):  
Maoyi Yang ◽  
Zhipeng Hu ◽  
Rensong Yue
Keyword(s):  
Diabetes Mellitus ◽  
Conduction Velocity ◽  
Nerve Conduction ◽  
Nerve Conduction Velocity ◽  
Tibial Nerve ◽  
Motor Nerve ◽  
Meta Analysis ◽  
Fasting Blood Glucose ◽  
Sensory Nerve ◽  
Motor Nerve Conduction Velocity

Background: Diabetes mellitus (DM) is a metabolic disorder characterized by progressive β cell dysfunction. Sheng-Mai Injection (SMI), a Traditional Chinese medicine preparation, is widely used for DM and related complications. Objective: The study aims to summarize the applications of SMI in DM and related complications by meta-analysis. Methods: Eight databases were searched, and meta-analyses were performed. Results : Fifteen studies, including 1273 participants, were included. All studies and participants are from China. Pooled effects showed that SMI might reduce glycated hemoglobin (MD -0.46%; 95% CI -0.89 to -0.03; P < 0.01), fasting blood glucose (MD -0.83 mmol/L; 95% CI -1.30 to -0.36; P < 0.01), two-hour Postprandial glucose (MD -1.27 mmol/L; 95% CI -1.96 to -0.58; P < 0.01), 24-hour urinary protein (MD -0.28 mg; 95% CI -0.51 to -0.06; P = 0.01), blood urea nitrogen (MD -1.31 mg; 95% CI -2.08 to -0.54; P < 0.05), Scr (MD -2.60; 95% CI -3.43 to -1.77; P < 0.05), ulnar nerve motor nerve conduction velocity (MNCV) (MD 1.45; 95% CI 0.03 to 2.87; P < 0.05) and tibial nerve Sensory nerve conduction velocity (SNCV) (MD 1.84; 95% CI 0.1 to 3.58; P < 0.05). There was no evidence of effect on common peroneal nervous MNCV and SNCV, tibial nerve MNCV, median nerve MNCV and SNCV. Adverse effects included less frequent gastrointestinal reactions, elevated transaminase, leucopenia, fever, and rash. Conclusion: SMI may be effective in DM and diabetic nephropathy. For diabetic peripheral neuropathy, the effectiveness cannot yet be proven considering the inconsistency of the evidence.

Very Early Neurophysiological Study in Guillain-Barre Syndrome

2018 ◽  
Vol 80 (1-2) ◽  
pp. 100-105 ◽  
Author(s):  
Jiaoting Jin ◽  
Fangfang Hu ◽  
Xing Qin ◽  
Xuan Liu ◽  
Min Li ◽  
...  
Keyword(s):  
Nerve Conduction ◽  
Nerve Conduction Velocity ◽  
Tibial Nerve ◽  
Early Stage ◽  
Motor Nerve ◽  
Sensory Nerve ◽  
Sensory Nerves ◽  
Motor Nerve Conduction ◽  
Abnormal Rate ◽  
Motor Nerves

Purpose: The diagnosis of Guillain-Barre syndrome (GBS) in the very early stage may be challenging. Our aim was to report the neurophysiological abnormalities in GBS within 4 days of clinical onset. We expected that GBS will be diagnosed by the assistance of neurophysiological study in the very early stage. Methods: We prospectively recruited patients with a diagnosis of GBS discharged from First Affiliated Hospital of Xi’an Jiaotong University and Xi Jing Hospital. Patients were classified into 3 groups according to the onset of symptoms to electromyography examination interval (OEI). The neurophysiological findings were carried out using standard procedures. All patients were examined by the same experienced neurophysiologist. Results: There were not significant group differences in abnormal rate, distal motor latency (DML), motor nerve conduction velocity (MNCV), F response (FR), compound muscle action potential (CMAP), conduction block (CB), sensory nerve action potential (SNAP), and sensory nerve conduction velocity among OEI ≤4 days, 4< OEI ≤10 days, and OEI > 10 days groups. Motor nerves were more affected than sensory nerves in neurophysiological presentation in very early stage patients. The difference of motor nerves and sensory nerves was statistically significant in lower limbs, but was not in upper limbs. In motor nerve conduction studies, the abnormal rate of DML, MNCV, FR, CB was more common seen in ulnar and peroneal nerve than median and tibial nerve, the abnormal rate of CMAP was the same in ulnar, median, peroneal and tibial nerve. In sensory nerve conduction studies, the abnormal rate of ulnar nerve and median nerve was higher than the superficial peroneal nerve and sural nerve. The OEI was not correlated with the SNAP decrease rate of median (r = 0.10, p = 0.23) and ulnar (r = 0.26, p = 0.06) but was statistically correlated with sural SNAP decrease rate (r = 0.29, p = 0.04). The sural-sparing pattern phenomenon was the most commonly discovered phenomenon in very early stage patients (OEI ≤4 days), followed by patients with 4< OEI ≤10 days, ultimately found in patients with OEI > 10 days. Conclusions: We suggest performing neurophysiological examination as soon as possible for suspected GBS patients, particularly focusing on multi-spots inspection of ulnar and peroneal nerves, and paying close attention to sural-sparing patterns.

scholarly journals Normal neurophysiologic parameters of the median nerve among adult healthy Sudanese population

2020 ◽  
Vol 10 (4) ◽  
pp. 136-141
Author(s):  
Mohammed Salah Elmagzoub ◽  
Ahmed Hassan Ahmed ◽  
Hussam M A Hameed
Keyword(s):  
Action Potential ◽  
Median Nerve ◽  
Conduction Velocity ◽  
Nerve Conduction ◽  
Compound Muscle Action Potential ◽  
Motor Nerve ◽  
Sensory Nerve ◽  
Peak Latency ◽  
Muscle Action Potential ◽  
Sensory Nerve Action

Background: Nerve conduction studies (NCSs) help in delineating the extent distribution of neural lesion, and the diagnosis of peripheral nerve disorders. Because normative nerve conduction parameters were not yet established in Sudan EMG laboratories, this study aims towards having our own reference values, as we are using the American and British parameters. This will allow avoiding the discrepancies that might be induced by many factors. Methods: NCSs were performed in 200 Median nerves of 100 adult healthy Sudanese subjects using standardized techniques. Results: The median SNAP (sensory nerve action potential) values were as follows: distal latency, 2.6±3 ms with a range of (2.3-2.9); peak latency, 3.5±0.5 ms (3.0-4.0); amplitude, 47.7±18.0μV (29.7-65.7); conduction velocity, 53.0±7.8 m/s (45.2-60.8). The following values were obtained for the Median nerve CMAP (compound muscle action potential) at wrist stimulation: distal latency, 3.5±0.5 ms with a range of (3.0-4.0); peak latency, 9.4± 1.0 ms (8.4-10.4); duration, 5.9±0.9 ms (5.0-6.8); amplitude, 12.3±2.5 mV (9.8-14.8); area, 43.0±10.4 mVms (32.6-53.4); conduction velocity, 63.6±6.2 m/s (57.4-69.8). The F wave was 28.4±1.8 ms (26.6-30.2). Conclusion: The overall mean sensory and motor nerve conduction parameters for the tested nerve compared favorably with the existing literature with some discrepancies that were justified.

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