Bone Morphogenetic Proteins ; therapeutic use ; Calcitriol ; analogs & derivatives ; therapeutic use ; Electric Stimulation Therapy ; methods ; Humans ; Osteogenesis ; Osteogenesis, Distraction ; classification ; methods ; Transforming Growth Factor beta ; therapeutic use ; Vitamin D ; analogs & derivatives

Adult ; Aged ; Bone Transplantation ; Female ; Fibula ; transplantation ; Free Tissue Flaps ; Humans ; Male ; Mandible ; surgery ; Maxilla ; surgery ; Middle Aged ; Muscle, Skeletal ; transplantation ; Reconstructive Surgical Procedures ; methods

Objective To evaluate the effect of omega-3 polyunsaturaed fatty acid on liver function, donor's T lymphocytes and acute rejection following orthotopic liver transplantation in rats. Methods Orthotopie liver transplantation from BN (RT1 n) to Lewis was performed. Normal saline (NS, n = 6), parenteral nutrition (PN, n = 6) or parenteral nutrition and Omega-3 fatty acid (OM, n = 6) was given through internal jugular vein catheter respectively beginning the first day for consecutive 6 days. At 7thday, the liver function and pathological changes of the transplant liver were observed. The percentage of CD4+ , CD8+, CD4+ CD25+ and CD8+ CD28- T lymphocytes were analyzed by flow-cytometry. Results In OM group the CD4+, CD8+ , CD4+ CD25+ and CD8+ CD28- T lymphocytes significantly decreased, compared with NS (t = 4.28, P < 0.01 ; t = 2.63, P < 0.05 ; t = 2.59, P < 0.05 ; t = 8.86, P <0.01)or PN group(t =8.06, P<0.01; t =3.57, P<0.01; t =5.35, P<0.01; t =7.98, P<0.01). The ratio of CD4+ to CD8+ significantly decreased in OM group compared with NS group and PN group(t = 6.25, P<0.01; t=4.92, P<0.01). RAI (rejection activity index) in NS group, PN group and OM group was 7.17 +0.98, 6.17±0.75 and 4.33±0.52, respectively. The rejection grade in OM group was siguificanfly alleviated than that in NS group and PN group(t =6.25, P <0.01;t =4.92, P <0.01). Conclusion Omega-3 fatty acid inhibits T lymphocytes, especially help T lymphocytes, alleviates acute rejection. The suppressor T cell and the regulatory T cell were not responsible for the alleviation of the rejection.

Objective:To explore the protective effect of ellagic acid on the acute liver injury induced by carbon tetrachloride (CCl4) of the mice,and to explore its possible mechanism.Methods:A total of 50 mice were randomly divided into normal control group,model group,low,medium and high doses of ellagic acid groups (n=10).The mice in normal control group and model group were treated with 1% sodium carboxymethyl cellulose solvent by intragastic administration,and the mice in ellagic acid groups were treated with 160,320,and 480 mg·kg-1 ellagic acid by intragastic administration,respectively.After 14 d,the mice in model group and different doses of ellagic acid groups were intraperitoneally injected with 10 mL·kg-1 0.1% CCl4,while the mice in normal control group were intraperitoneally injected with 10 mL·kg-1plant oil.16 h later,all the mice were sacrificed and the body weights and the liver indexes of the mice were detected;the serum levels of alanine transaminase(ALT),aspartate transaminase(AST) were detected;the activities of superoxide dismutase(SOD) and levels of GSH-Px,malonalde hyde(MDA) and catalase(CAT) in liver tissue of the mice were detected.Results:There were no significant differences of the body weights of the mice between each group before and after treatment(P>0.05).Compared with normal control group,the liver indexes and the levels of serum ALT and AST of the mice in model group and different doses of ellagic acid groups were significantly increased (P<0.05).Compared with model group,the liver indexes of the mice in different doses of ellagic acid groups were decreased(P<0.05);the serum levels of ALT and AST of the mice in high dose of ellagic acid group were significantly decreased (P<0.05),while the CAT level in liver homogenate was significantly increased (P<0.05);the levels of GSH-Px in liver homogenate of the mice in medium and high doses of ellagic acid groups were significantly increased (P<0.05);the activities of SOD in liver homogenate of the mice in different doses of ellagic acid groups were significantly increased (P<0.05),and the MDA levels were significantly decreased (P<0.05).Conclusion:The ellagic acid has the protective effect on acute chemical liver injury in the mice induced by CCl4 and the most effective dose is 480 mg·kg-1;its mechanism may be related to the anti-oxidation.

Objective To report our experience of retroperitoneal laparoscopic extravascular stent placement for nutcracker syndrome.Methods The clinical data of 12 nutcracker syndrome patients (10 males and 2 females;mean age 26 years) who underwent retroperitoneal laparoscopic extravascular stent placement from March 2014 to Febuary 2016 were retrospectively reviewed.The main symptoms were gross hematuria in 8 patients(one with proteinuria)and flank pain was noted in 1 patient.Three male patients had left-sided secondary varicoceles.Ultrasonography and computed tomography showed the left renal vein clamped by the superior mesenteric artery and the aorta.The anteroposterior diameter of the left renal vein in the renal hilum was three-fold than the aortomesenteric area,and the peak velocity ratio of the aortomesenteric area was much faster than the renal hilum.Twelve patients underwent laparoscopic extravascular stent placement under general anesthesia.The preaortic fibrous tissue between the aorta and the superior mesenteric artery was released intraoperatively.Renal vein became fiat when the superior mesenteric artery was elevated.The 6-8 cm extravascular stent was set on the surface of the renal vein to prevent the compression.Results Stenting was successfully accomplished in all 12 patients.Mean operative time was 62 min (50-125 min),estimated blood loss was 35 ml(20-100 ml),and the hospital stay after operation was 8 days (6-12 days).Three patients had a transient orthostatic intolerance,and they were cured by conservative treatment.With a mean follow up of 14 months (5-30 months),symptoms of hematuria and flank pain resolved in 7/8 and 1/1,respectively.Varicoceles were cured in all three patients.One case got partial relief because of recurrent hematuria due to excessive exercise.Ultrasonography showed that extravascular stent was in the right place,and the angle between abdominal aorta and superior mesenteric artery became normal.The inner diameter of left renal vein was decreased,and the narrow segment was diminished in diameter meanwhile the blood outflow was smooth.Conclusions Retroperitoneal laparoscopic extravascular stent placement in the renal vein is a safe and effective approach for nutcracker syndrome.

Objective To investigate the rates of undernutrition and nutritional risks of surgical pa-tients with pancreatic tumors .Methods Totally 121 surgical patients with pancreatic tumors from Depart-ment of Surgery Beijing Hospital were enrolled in a prospective study during January 2014 to December 2015 . Patients were divided into two groups:the pancreatic cancer group ( n=90 ) and other pancreatic tumor group ( n=31 ) .Nutritional Risk Screening 2002 was used to assess the nutritional status .Other data including an-thropometric measure, body composition, blood biochemistry and clinical outcome were collected and ana-lyzed.Results Among 121 patients, the mean age was ( 61.9 ±13.6 ) years, the mean body mass index was ( 23.20 ±2.95) kg/m2 , the mean mid-upper circumference was ( 28.8 ±3.5 ) cm, the mean muscle weight was (44.6 ±7.4) kg, and the mean fat mass was (16.8 ±7.6) kg .There was no significantly differ-ence in anthropometric measurement results and body compositions between two groups ( all P>0.05 ) .In the pancreatic cancer group, albumin [ (39.0 ±4.7) g/L vs. (42.3 ±2.9) g/L, P<0.001], total protein [ (62.8 ±6.2) g/L vs.(66.3 ±2.9) g/L, P<0.001], and prealbumin [ (136.1 ±85.4) mg/L vs. (197.8 ±112.6 ) mg/L, P=0.011 ] were significantly lower than those in the other pancreatic tumor group and a higher fasting blood-glucose [ (6.45 ±2.47) mmol/L vs.(4.95 ±0.79) mmol/L, P<0.011] was found.Among all patients , the rates of undernutrition and nutritional risk were 4.1% and 78.5%, and the pancreatic cancer group had a higher rate of nutritional risk (91.1% vs.38.7%,χ2 =36.525, P<0.001). Conclusion In this prospective study , surgical patients with pancreatic cancer have a high incidence of nutri -tional risk, with low protein level and abnormal glucose metabolism .

Objective To summarize the experience of surgical repair for Stanford type A aortic dissection after cardiac surgery.Methods From February 2009 to December 2011,11 patients who underwent previous cardiac surgery accepted the aortic surgery for Stanford type A aortic dissection.There were 8 males and 3 females.The range of age was from 29 to 64 years,the mean age was(52.27±9.90) years.In these patients,one patient had underwent ventrical septal defect,one patient atrial septal defect,nine patients aortic valve replacement.The interval between the two operations was 1-26 years.The types of aortic dissection was A1S(4 patients),A1C(1 patient),A2S(1 patient),A2C(4 patients),A3C(1 patient).All the patients underwent aortic surgery for aortic dissection.Results The time of cardiopulmonary bypass was 75-409 minutes,the mean value was(185.36± 99.67) minutes.Aortic cross clamp time was 37-203 minutes,the mean value was (84.09± 48.36) minutes.Total six patients needed deep hypothermia and selective cerebral perfusion time was 8-32 minutes.The mean value was(17.71 ± 9.48) minutes.One patient dead in the hospital and the mortality was 9％.The morbidity was 27％.Ten patients followed up 16-45 months.No aortic rupture,paraplegia and death were observed in follow-up time.Conclusion The delayed Stanford type A aortic dissection after cardiac surgery should be attached great importance and always need emergency surgery to save patients' life.The technique is demanding and risk is great for surgeons and patients.For the patients who suffered aortic valve disease combined with dilation of ascending aorta larger than 4.5 cm,the ascending aorta also should be repaired while aortic valve replacement is performed,which could avoid delayed aortic dissection in the future.

Objective To summarize the clinical results of the surgical treatment for Stanford B aortic dissection patients with proximal aortic aneurysm(including aortic root,ascending,arch) by enblock technique.Methods From Jun.2011 to Oct.2015,20 patients with Stanford type B aortic dissection and proximal aortic aneurysm underwent open surgery by enbloc technique in our center.Among them,there were 15 male and 5 female.Average age of patients was(40.65 ± 13.55) years (range:22-65 years).The comorbidities of proximal aortic diseases are ascending aortic aneurysm in 10,aortic root aneurysm in 8,and aortic arch aneurysm in 2.All the surgeries were accomplished by hypothermic cardiopulmonary bypass assist.The combined surgery includes:extra-anatomy bypass grafting in 16,Bentall procedure in 15,ascending aortic repair in 5.Before surgery and discharged from hospital computed tomography angiography(CTA) was performed in each patient.All patients except 2 were followed.During the follow-up,CTA was performed and recorded.Results The average operation time,cardiopulmonary bypass time,aortic clamping time and selective cerebral perfusion (SCP) time are (6.47 ± 1.01)h (4.5-9 h),(173.60 ± 43.39) min (109-303 min),(91.25 ± 28.63) min (51-165 min),(27.25 ± 6.80) min (17-43 min),respectively.The mean nasopharyngeal temperature during SCP is(23.77 ± 1.27)℃ (21.6-26℃).There were no operative deaths.The mean follow-up time is (32.44 ± 17.27)months (range:8-60 months).Two patients underwent aortic re-intervention during follow-up.And 2 patients were lost follow-up(The follow-up rate is 90％).One late death was found.The patient succumbed to sudden distal aortic rupture.Other patients are survived without any complications.Conclusion Enblock technique is a relatively simple procedure in total aortic arch repair surgery.And it can be a safely surgical treatment for type B aortic dissection patients with proximal aortic aneurysm.The indications of enblock technique for Stanford B aortic dissection patients are those who combined with proximal aortic aneurysm.

Objective To learn the plague's host animals and parasitic flea composition, and to investigate the natural foci of plague in Xiji county in order to provide basic information for plague prevention and control. Methods The Citellus alaschanicus density, nocturnal rodents, the body flea, the burrow track flea, the nest flea were investigated in 8 townships (town) of Xiji county from June 11 2007 to July 25 2007. Specimens of small mammalian, fleas were collected for bacteriological and serological testing. Results The average density of the main host Citellus alaschanicus was 0.85 per hectare. The nocturnal mouse capture rate was 0.80%(24/2987).The survey found 16 species of small mammals that belonging to 3 orders, 9 families and 16 species with Citellus alaschanicus the dominant species. The Citellus alaschanicus had 2.84 fleas per body. Four families and 16 species of fleas were identified in the areas. The Citellus alaschanicus and Citellophilus Tesquorum Mongolicus were the dominant species. Plague bacteriology and serology tests were negative. Conclusions The study shows that the area is suitable for the formation of natural foci of Citellus alaschanicus plague. Surveillance is an important measure for prevention and control of the plague.

Objective To investigate the nutritional status,body composition,and energy metabolism of hepatocarcinoma patients undergoing surgical treatment and explore the relationships of the nutritional status with body composition and energy metabolism.Methods Totally 112 hospitalized hepatocarcinoma patients undergoing surgical treatment met the inclusion and exclusion criteria were enrolled as the intervention group,and another 100 patients with cholelithiasis during the the same period were enrolled as the control group.Their general clinical data including body mass index(BMI),arm circumference,grip,albumin,prealbumin,energy expenditure,and body composition were collected.The nutritional status was assessed by the scored patient-generated subjective global assessment(PG-SGA).The relationships of the nutritional status with body composition and between energy metabolism were analyzed.All the data were analysed by SPSS 16.0 software package.Results The arm circumference [(23.9±3.6)cm vs.(25.3±4.5)cm,t=2.57,P=0.014],hand grip[(31.7±6.0)kg vs.(39.2±7.6)kg,t=8.19,P<0.001],serum albumin[(32.5±4.7)g/L vs.(36.5±7.2)g/L,t=4.92,P=0.007] and prealbumin[(0.172±0.052)g/L vs.(0.263±0.077)g/L,t=10.3,P=0.004] of the intervention group were significantly lower than the control group.The total malnutrition rate of the intervention group was 37.5％(42 cases at levels B and C),and that of the control group was 14.4％(14 cases at levels B and C)(X2=19.73,P<0.001).The extracellular water significantly increased in the intervention group compared with that of the control group[(15.35±2.21)L vs.(13.51±2.73)L,t=5.54,P<0.001];however,the somatic cell mass [(27.54±4.42)kg vs.(29.03±4.38)kg,t=2.53,P=0.012],fat mass[(13.44±4.23)kg vs.(17.36±5.21)kg,t=6.18,P<0.001],and muscle mass[(43.11±6.27)kg vs.(48.17±7.13)kg,t=5.63,P<0.001] had significantly decreased compared with the control group.The measured value of rest energy expenditure(mREE)[(6 581.62±1 201.70)kJ/d vs.(6 290.73±1 071.68)kJ/d,t=1.98,P=0.042] of the intervention group was significantly higher than the control group(P=0.042),and the respiratory quotient(RQ)was also significantly higher(0.87±0.10 vs.0.85±0.06,t=2.72,P=0.027).The extracellular fluid(PG-SGA A vs.B P=0.035;A vs.C P<0.001;B vs.C P=0.042)were significantly increased,and the number of somatic cells(A vs.B P=0.015;A vs.C P=0.001;B vs.C P=0.022),fat(A vs.B P=0.026;A vs.C P=0.003;B vs.C P=0.022)and muscle mass(A vs.B P=0.029;A vs.C P=0.011;B vs.C P=0.036)were decreased with the deterioration of nutritional status,resting energy expenditure(A vs.B P=0.023;A vs.C P=0.002;B vs.C P=0.032),and RQ(A vs.C P=0.004;B vs.C P=0.012)were also increased with the deterioration of nutritional status,and there was significant difference among three groups.Conclusions The incidence of malnutrition is high in hepatocarcinoma patients undergoing surgical treatment.The patients can have lower lean body mass,more water retention,and higher energy metabolism,which may worsen along with the deterioration of nutritional status.