Effect of cinepazide combined with mecobalamine on nerve conduction velocity, vibration perception threshold and serum indexes in patients with diabetic peripheral neuropathy

Objective:To analyze the effect of cinepazide combined with mecobalamine on nerve conduction velocity, vibration perception threshold and serum indexes in patients with diabetic peripheral neuropathy. Methods:90 patients with diabetic peripheral neuropathy treated in our hospital between March 2013 and March 2016 were selected and divided into observation group and control group (n=45) according to random number table, control group received mecobalamine treatment alone and observation group accepted the cinepazide combined with mecobalamine therapy. Differences in nerve conduction velocity, vibration perception threshold as well as serum oxidative stress indexes and nerve injury marker molecules were compared between two groups of patients 2 weeks after treatment. Results:2 weeks after treatment, median nerve, ulnar nerve and peroneal nerve sensory nerve conduction velocity (SNCV) and motor nerve conduction velocity (MNCV) levels of observation group were higher than those of control group (P<0.05) while both lower extremities vibration perception threshold (VPT) levels were lower than those of control group (P<0.05). Serum homocysteine (HCY), advanced glycosylation end products (AGEs), malondialdehyde (MDA), neuron-specific enolase (NSE), high mobility group B1 (HMGB1) and S100βcontent of observation group were lower than those of control group (P<0.05) while reduced glutathione (GSH), superoxide dismutase (SOD), myelin basic protein (MBP) and brain-derived neurotrophic factor (BDNF) content were higher than those of control group (P<0.05). Conclusions:Cinepazide combined with mecobalamine can reduce the nerve injury degree, improve nerve conduction and vibration perception and alleviate the oxidative stress degree in patients with diabetic peripheral neuropathy.

Effect of the potential function and strain rate on mechanical behavior of the single crystal Ni-based alloys:A molecular dynamics study

Molecular dynamics has been widely used to study the fundamental mechanism of Ni-based superalloys.However,the effect of the potential function and strain rate on mechanical behavior has rarely been mentioned in the previous molecular dynamics studies.In the present work,we show that the potential function of molecular dynamics can dramatically influence the simulation results of single crystal Ni-based superalloys.The microstructure and mechanical behavior of single crystal Ni-based superalloys under four commonly used potential functions are systematically compared.A most suitable potential function for the mechanical deformation is critically selected,and based on it,the role of strain rate on the mechanical deformation is investigated.