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Objective@#To investigate the antagonistic effect of diallyl sulfide (DAS) against peripheral nerve injury induced by n-hexane in rats.@*Methods@#A total of 68 adult male Wistar rats were selected, among which 50 were randomly selected and divided into blank control group, DAS control group (100 mg/kg·bw) , n-hexane model group, low-dose DAS intervention group (50 mg/kg·bw) , and high-dose DAS intervention group (100 mg/kg·bw) . A rat model of peripheral nerve injury was established by n-hexane exposure, and the rats were treated with DAS at different doses. The changes in pyrrole adducts and behavior were observed, a metabolic analysis was performed for serum pyrrole adducts, and the intervention effect was evaluated. The remaining 18 rats were randomly assigned to the n-hexane model group, the low-dose DAS intervention group, and the high-dose DAS intervention group, with 6 rats in each group, as satellite groups used for the toxicokinetic analysis of serum pyrrole adducts.@*Results@#Compared with the blank control group, the n-hexane model group and low-and high-dose DAS intervention groups had a significant reduction in body weight since week 2 (P<0.01) . Compared with the n-hexane model group at the end of the experiment at week 7, the high-dose DAS intervention group had a significantly higher body weight (P<0.05) , while there was no significant difference in body weight between the n-hexane model group and the low-dose DAS intervention group (P>0.05) . The n-hexane model group developed gait abnormality at week 2 of poisoning, while the low-and high-dose DAS intervention groups developed gait abnormality at weeks 3 and 5 of poisoning, respectively. At the end of the experiment, the n-hexane model group and the low-and high-dose DAS intervention groups had a significantly higher gait score than the blank control group (P<0.01) . At the end of the experiment, the n-hexane model group and the low-dose DAS intervention group had significantly shorter latency in rotarod test than the blank control group (P<0.01) , while there was no significant difference in latency between the DAS control group and the high-dose DAS intervention group (P>0.05) . Compared with the n-hexane model group, the low-and high-dose DAS intervention groups had a significant increase in latency in rotarod test (P<0.01) . Compared with blank control group, the n-hexane model group and the low-dose DAS intervention group had a significant increase in mean nerve conduction velocity (P<0.01) , while there was no significant difference between the blank control group and the DAS control group or high-dose DAS intervention group (P>0.05) , and compared with the n-hexane model group, the low-and high-dose DAS intervention groups had a significant increase in nerve conduction velocity (P<0.01) . Compared with the blank control group at the end of the experiment at week 7, the n-hexane model group and the low-and high-dose DAS intervention groups had significant increases in the concentration of pyrrole adducts in serum, urine, and hair (P<0.01) , while there was no significant difference between the blank control group and the DAS control group (P>0.05) , and the high-dose DAS intervention group had a significantly lower concentration of pyrrole adducts in serum, urine, and hair than the low-dose DAS intervention group (P<0.05) . Serum pyrrole adducts reached the peak level at 9-12 hours and then started to decrease. Compared with the n-hexane model group, the high-and low-dose DAS intervention groups had a significantly shorter half-life period of serum pyrrole adducts (P<0.01) . Compared with the n-hexane model group, the high-and low-dose DAS intervention groups had a significant reduction in the area under the curve of serum pyrrole adducts (P<0.05) .@*Conclusion@#DAS can antagonize peripheral nerve injury induced by n-hexane.
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To investigate the therapeutic effect of pectoralis major muscle flap transplantation in thoracotomy patients with sternal infection. Methods From January 2014 to December 2017, the treatment group of 39 patients with thoracic bone infection after cardiac surgery was used pectoralis major muscle flap to close the wound, while 26 patients were treated by debridement and vacuum sealing drainagea at the same time as the control group. The hospitalization time, hospital costs, number of operations, satisfaction survey, and relapse rate were compared between the those. Results Compared with the control group, the treatment group has the benefit of shorter hospitalization time [(18. 1 ± 3. 8)days vs. (36. 7 ± 11. 4) days], less hospital costs [(19429 ±4088)yuan vs. (33495 ±10712)yuan], less number of operations [(1. 1 ±0. 3)times vs. (2. 4 ±0. 8)times], higher level of satisfaction(56. 4％ vs. 30. 8％), lower relapse rate(5. 1％ vs. 26. 9％), the differences are statistically significant(all P <0. 05). Conclusion Thoracic reconstruction with pectoralis major muscle flap is an effective treatment for sternal infection in postcardiac surgery.
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Objective@#To study the protective effects of diallyl sulfide (DAS) on leukopenia induced by benzene.@*Methods@#90 Healthy male ICR mice, adaptive feeding 5 days later, 15 were randomly divided into blank control group、model group、low、middle、high dose DAS intervention groups and DAS control group. Mice in intervention groups and DAS control group were orally given DAS at 40, 80, 160, 160 mg/kg·bw, while mice in the other two groups received an equal volume of corn oil. After 2 hours, model group and the other three intervention groups were given benzene, corn oil suspension (1.3 g/kg·bw) , the two control groups treated with the same volume of corn oil, Benzene and DAS are dissolved in corn oil. one time for each day. 4 weeks later, Anesthesia at 14/29, make blood routine examination and count organ index and observe pathological examinations of spleen and thymus.@*Results@#On day 14, the counts of peripheral blood white blood cells (WBC) , lymphocytes, monocytes in the model group decreased to 68.99%, 71.72%, 53.19% (P<0.05) ; On day 29, the counts of peripheral blood lymphocytes, monocytes, neutrophils in the model group decreased to 83.00%, 81.03%, 89.37%, 20.84%, 19.25% (P<0.05) ; spleen weight, spleen index, white pulp area ratio of spleen, thymus weight, thymus index, thymic cortex area ratio of mice in the model group decreased (P<0.05) . On day 14, the counts of peripheral blood monocytes and lymphocytes in the DAS high dose intervention group increased by 136.36%, 260.00% (P<0.05) ; On day 29, the counts of White blood cells, lymphocytes, red blood cells, platelets, hemoglobin in the DAS low, middle and high dose intervention groups increased (P<0.05) ; spleen weight, spleen index, white pulp area ratio of spleen, thymus weight, thymus index, thymic cortex area ratio of mice in the DAS high dose intervention groups increased (P<0.05) .@*Conclusion@#DAS can effectively suppress benzene-induced leucopenia in mice.
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Objective@#To investigate the antioxidant mechanism of diallyl sulfide (DAS) in antagonizing the reduction in peripheral blood white blood cells (WBC) induced by benzene in rats.@*Methods@#A total of 60 specific pathogen-free adult male Sprague-Dawley rats, with a body weight of 180-220 g, were selected, and after 5 days of adaptive feeding, they were randomly divided into blank control group, DAS control group, benzene model group, benzene+low-dose DAS group, benzene+middle-dose DAS group, and benzene+high-dose DAS group, with 10 rats in each group. The rats in the benzene+low-dose DAS group, the benzene+middle-dose DAS group, the benzene+high-dose DAS group, and the DAS control group were given DAS by gavage at a dose of 40, 80, 160, and 160 mg/kg·bw, respectively, and those in the blank control group and the benzene model group were given an equal volume of corn oil; 2 hours later, the rats in the benzene model group, the benzene+low-dose DAS group, the benzene+middle-dose DAS group, and the benzene+high-dose DAS group were given a mixture of benzene (1.3 g/kg·bw) and corn oil (with a volume fraction of 50%), and those in the blank control group and the DAS control group were given an equal volume of corn oil. The above treatment was given once a day for 4 consecutive weeks. At 1 day before treatment, anticoagulated blood was collected from the jugular vein for peripheral blood cell counting. After anesthesia with intraperitoneally injected pentobarbital (50 mg/kg·bw), blood samples were collected from the abdominal aorta, serum was isolated, and the thymus, the spleen, and the femur were freed at a low temperature to measure oxidative and antioxidant indices. The femur at one side was freed for WBC counting in bone marrow.@*Results@#Compared with the blank control group, the benzene model group had significant reductions in the volume, weight, and organ coefficient of the spleen and the thymus (P<0.05) ; compared with the benzene model group, the benzene+low-dose DAS group, the benzene+middle-dose DAS group, and the benzene+high-dose DAS group had significant increases in the volume of the spleen and the thymus and the weight and organ coefficient of the spleen (P<0.05), and the benzene+middle-dose DAS group and the benzene+high-dose DAS group had significant increases in the weight and organ coefficient of the thymus (P<0.05). Compared with the blank control group, the benzene model group had a significant reduction in WBC count in peripheral blood and bone marrow (P<0.05), and compared with the benzene model group, the benzene+middle-dose DAS group and the benzene+high-dose DAS group had a significant increase in WBC count in peripheral blood and bone marrow (P<0.05). Compared with the blank control group, the benzene model group had a significant increase in the serum level of malondialdehyde (MDA) (P<0.05) and significant reductions in total superoxide dismutase (T-SOD) activity, reduced glutathione (GSH) level, GSH/oxidized glutathione (GSSG) ratio, total antioxidant capacity (T-AOC) (P<0.05) ; compared with the benzene model group, the benzene+high-dose DAS group had a significant reduction in the serum level of MDA and significant increases in T-SOD activity, GSH level, GSH/GSSG ratio, and T-AOC (P<0.05). Compared with the blank control group, the benzene model group had a significant increase in the level of MDA (P<0.05) and significant reductions in GSH level, GSH/GSSG ratio, and T-AOC (P<0.05) in the spleen; compared with the benzene model group, the benzene+low-dose DAS group, the benzene+middle-dose DAS group, and the benzene+high-dose DAS group had a significant reduction in MDA level (P<0.05) and significant increases in GSH level and T-AOC (P<0.05), and the benzene+high-dose DAS group had significant increases in T-SOD activity and GSH/GSSG ratio (P<0.05). Compared with the blank control group, the benzene model group had a significant increase in the level of MDA in bone marrow cells (BMCs) and peripheral blood mononucleated cells (PBMCs) (P<0.05) and a significant reduction in T-AOC in PBMCs (P<0.05) ; compared with the benzene model group, the benzene+low-dose DAS group, the benzene+middle-dose DAS group, and the benzene+high-dose DAS group had a significant reduction in the level of MDA in BMCs and PBMCs (P<0.05), and the benzene+high-dose DAS group had significant increases in GSH level and GSH/GSSG ratio (P<0.05) .@*Conclusion@#DAS can antagonize the benzene-induced reduction in peripheral blood WBC, possibly by exerting an anti-oxidative stress effect.
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Objective@#To find out a method to determine the pyrrole adducts in the hairs.@*Methods@#Collected the hair from common people and rats, defatted after completely washed, steeped the hair in different concentration of 2, 5-hexandione to build hair model containing pyrrole adducts; dissolved the hair and determined the concentration of pyrrole adducts.@*Results@#(1) . The combination of 0.72 mol/L of sodium hydrate and 2% tyrisin could dissolve the hair, and the digestion liquid could react with the Ehrlich's reagent showing fuchsia color; (2) . The color could maintain longer after adding more ethanol; (3) . More pyrrole adducts would be produced by the increasing the concentration of 2, 5-dihexandione (P<0.01) ; (4) . Concentration of pyrrole adducts in n-hexane treated hair showed no difference compared with control (P>0.05) .@*Conclusion@#the method could be used to determine the concentration of pyrrole adducts in hair exposed to n-hexane
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Objective To study the clinical application of laparoscopic cholecystectomy (LC) combined with intraoperative endoscopic sphincterotomy (IOEST) with the antegrade guidewire technique in the treatment of cholecystocholedocholithiasis.Methods This is a prospective controlled study comparing LC combined with preoperative endoscopic sphincterotomy (POEST) versus LC combined with IOEST in the treatment of cholecystocholedocholithiasis.Patients who were diagnosed to have cholecystocholedocholithiasis from June 2012 to February 2013 in our hospital were divided into the POEST group and the IOEST group.There were 50 patients in each group.The operation time,successful stone-extraction rate,residual stones rate,complication rate,postoperative stay and hospitalization cost between the groups were compared.Results The sex,age,stone size,number of stones and diameter of the common bile duct showed no significant difference between the two groups (P ＞ 0.05).There were no differences between the two groups in surgical time of EST,surgical time of LC combined with EST,successful stone-extraction rate and hospitalization cost (P ＞ 0.05).There were significant differences between the two groups in the residual stones rate,postoperative hyperamylasemia rate,postoperative acute pancreatitis rate and postoperative stay (P ＜0.05).LC combined with IOEST using the antegrade insertion of guidewire technique significantly reduced the residual stones rate (0 vs 8％),postoperative hyperamylasemia rate (4％ vs 18％),postoperative acute pancreatitis rate (0 vs 8％) and postoperative stay.Conclusions LC combined with IOEST using the antegrade guidewire technique could be performed safely when compared with the traditional sequential technique,LC combined with IOEST using the antegrade guidewire technique significantly reduced the postoperative acute pancreatitis rate and the residual stones rate.LC combined with IOEST using the antegrade guidewire technique should be the recommended technique to treat patients with cholecystocholedocholithiasis.