0.05).No sign of aseptic loosening or change in implant position was noted.[Conclusion]This short-term study showed that bipolar femoral head arthroplasty seems to be a suitable alternative for primary treatment of displaced femoral neck fractures in patients over 80 years.More attention should be paid to coexisting medical illness(e.g.diabetes mellitus,hypertension,and ischaemic heart disease)and prevention of complications.

Objective To evaluate the effect of class 10000 laminar flow ward on the incidence of healthcare-asso-ciated infection (HAI)in patients with initial occurrence of acute leukemia during induction chemotherapy period. Methods Patients with initial occurrence of acute leukemia admitted to a hematological department of a hospital be-tween October 2013 and June 2014 were investigated retrospectively,patients in class 10000 laminar flow ward was as trial group,in general ward was as control group. All patients received standard induction chemotherapy and the same nursing measures,the incidence of HAI between two groups of patients,and ward air cleanliness were com-pared.Results A total of 79 patients with initial acute leukemia were received (trial group,n= 39;control group, n= 40). The average air cleanliness value in rooms and corridors of laminar flow wards were both significantly dif-ferent with general ward (3.57×106/m3 vs 149.36×106/m3 ,t= 45.80,P<0.001;24.46×106/m3 vs 15854.38 ×106/m3 ,t= 108.70,P<0.001). Incidence of HAI between trial group and control group was significantly differ-ent (23.08% [9/39]vs 45.00% [18/40],χ2= 4.219,P= 0.040). The main infection site in trial group was gastro-intestinal tract (n= 5 ),in control group was lower respiratory tract (n= 8 ). The duration of fever,duration and cost of antimicrobial use in trial group were (6.20±2.10)d,(9.35±2.12)d,and (27113.79±1559.03)yuan re-spectively,in control group were (10.20±2.90)d,(14.15±3.14)d,and (58566.29±2217.54)yuan respectively, difference in duration of fever and cost of antimicrobial use between two groups were all significant(t= 1.021, 1377.45,both P<0.05).Conclusion Laminar flow ward can reduce the incidence of HAI in patients with initial occurrence of acute leukemia,and decrease cost of antimicrobial use.

Objective:To investigate the clinical efficacy of amoxicillin combined with metronidazole in the treatment of peri-implantitis and its effect on serum matrix metalloproteinase-8 (MMP-8), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β) levels.Methods:Sixty-four patients with peri-implantitis who received treatment from January 2017 to December 2019 in Xiasha Hospital, SiR Run Run Shaw Hospital, Zhejiang University School of Medicine were included in this study. They were randomly assigned to receive treatment with metronidazole (control group, n = 32) or amoxicillin combined with metronidazole (observation group, n = 32). Clinical efficacy, periodontal pocket depth (PD), clinical attachment level (CAL), sulcus bleeding index (SBI), plaque index (PLI), matrix metalloproteinase-8 (MMP-8), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) levels and the incidence of adverse reactions were compared between the control and observation groups. PD, CAL, SBI and PLI were correlated with MMP-8, TNF-α and IL-1β levels. Results:The clinical efficacy in the observation group was significantly higher than that in the control group [93.75% (30/32) vs. 75.00% (24/32), χ2 = 4.267, P < 0.05]. After treatment, PD [(3.02 ± 0.24) mm], CAL [(1.70 ± 0.14) mm], SBI [(11.54 ± 3.26)%], PLI (0.87 ± 0.11) in the observation group were significantly lower than those in the control group [(4.47 ± 1.37) mm, (3.77 ± 1.06) mm, (18.84 ± 5.11)%, (1.12 ± 0.15), t = 5.897, 10.952, 6.813, 7.603, all P < 0.01]. After treatment, serum MMP-8 [(0.78 ± 0.23) μg/L], TNF-α [(71.24 ± 10.33) μg/L], IL-1β [(1.20 ± 0.14) μg/L] levels in the observation group were significantly lower compared with the control group [(1.12 ± 0.35) μg/L, (113.28 ± 15.73) μg/L, (2.55 ± 1.02) μg/L, t = 4.592, 12.637, 7.417, all P < 0.01]. Spearman correlation coefficient analysis showed that PD, CAL, SBI and PLI were positively correlated with serum MMP-8, TNF-α and IL-1β levels (all P < 0.01). Conclusion:Amoxicillin combined with metronidazole is highly effective in the treatment of peri-implantitis because it can promote plaque regression, reduce inflammatory reaction, and has a certain clinical promotion value.

Objective To investigate the changes in neuron-spe ci fic enolase (NSE) and S100B in patient′s serum before, during and after surgery of acute cerebral trauma, and to examine the influence of propofol, a venous an esthetic, on these changes, so as to evaluate the brain-protective effects of t his agent. Methods Ten patients with no cerebral injury and sch eduled for urological operation served as control group. Thirty patients with ce rebral trauma were randomly allocated to either propofol group (n=15) or iso flurane group (n=15). NSE and S100B were measured by ELISA in both propofol and isoflurane groups before surgery, 2 hours after cranial surgery started, and after surgery. The same measurement was done in the control group only before s urgery. Glasgow scores of patients with cerebral trauma were estimated and recor ded. Results Before surgery, the NSE and S100B in the patients with cerebral trauma were significantly higher than that in the control group ( P

Objective To observe the effect of fluvastatin on urinary albumin excretion rate(UAER)of microalbuminuria in type 2 diabetes patients.Methods Type 2 diabetes patients with mieroalbuminuria were randomly divided into fluvastatin goup(n=126)and control group(n=129).Fluvastatin group was given fluvastatin 40 mg each night.Follow up was conducted for 1.5 years.The UAER and glomerular filtration rate(GFR)as well as blood lipid level before and after therapy were compared.Results UAER in fluvastatin group was significantly lower than that in control group[(59.6±10.5)vs(87.5±12.3)mg/min,P＜0.05]before therapy[(104.4±25.2)vs(110.6±19.7)mg/min,P＜0.05],which was independent of its lowering-lipid effect.But GFR had no signifimicroalbuminuria which is independent of lowering-lipid effect in type 2 diabetic nephropathy patients and delay the progress of diabetic nephropathy.

Objective To investigate the effect of jejunal infusion of amino acids on secretion of gastrointestinal hormone in healthy dogs.Methods Six healthy adult dogs were treated with jejunal fistulas and femoral vein intubation.Twenty-four hours after the operation,solution of 8 different amino acid monomers (experimental group) or normal saline (control group) were infused into the jejunum of the dogs every 24hours.The levels of cholecystokinin (CCK),motilin,and gastrin in the peripheral plasma were measured using radioimmunoassay at the start of infusion (0 minute),and 30,60,90,and 120 minutes after infusion.Results Compared with the control group,the serum CCK level in the phenylalanine group was significantly higher 30 and 60 minutes after infusion [(1.25 ±0.19) ng/L vs.(0.66 ±0.14) ng/L,(1.23 ±0.12) ng/L vs.(0.80 ± 0.03) ng/L,both P ＜ 0.01],while that in the tryptophan group was significantly higher 30 minutes after infusion [(1.08 ±0.26) ng/L vs.(0.66 ±0.14) rig/L,P ＜0.01].The other measurement results showed no statistically significant differences.Conclusions Jejunal infusion of phenylalanine or tryptophan may stimulate the secretion of gastrointestinal hormone to some extent.Aromatic amino acids (phenylalanine and tryptophan) is more potent in triggering the release of CCK than aliphatic (leucine,isoleucine,and methionine) and charged amino acids (aspartic acid,arginine,and glutamate).The mechanism may be related to the properties of the amino acids.

Objective To investigate the effects of informed consent on emotion and immunologic function in patients with laryngopharynx cancer.Methods Sixty patients with laryngopharynx cancer were divided into group A and group B by random digits table with 30 cases each group.In group A patients were informed consent,and in group B family were informed consent.The self-rating anxiety scale (SAS) and self-rating depression scale (SDS) scores,as well as cellular immunity function were measured before informed consent and 2 weeks after surgery.Results The SAS,SDS scores and levels of cellular immunity function between two groups,differences was no statistically significant (P ＞ 0.05).The SAS,SDS scores 2 weeks after surgery in group A were significantly less than those in group B [(43.17 ± 7.63) scores vs.(47.84 ± 8.46) scores,(37.43 ± 8.69) scores vs.(42.67 ± 9.82) scores,P ＜ 0.05].The CD3,CD4,NK cells 2 weeks after surgery in group A were significantly higher than those in group B (0.5762 ±0.0941 vs.0.5160 ± 0.0821,0.3832 ± 0.0751 vs.0.3140 ± 0.0561,0.1521 ± 0.0491 vs.0.1163 ± 0.0422,P ＜ 0.05),CD8 and CD4/CD8 between two groups differences was no statistically significant (P ＞ 0.05).Conclusion The informed consent for patients with laryngopharynx cancer may relieve emotional disorders and avoid immunologic function decreasing.

The process of exercise regulating bone metabolism is complicated, which involves a number of signaling pathways. A large number of studies in vitro have indicated that mechanical stress regulates bone metabolism by Wnt, bone morphogenetic protein (BMP), and osteoprotegerin (OPG)/receptor activator of NF-κB ligand (RANKL)/receptor activator of NF-κB (RANK) signaling pathways. Both the in-tensity and frequency of mechanical stress have varing impact on bone tissue and cells. Plenty of studies in vivo also have shown that exer-cise regulates bone metabolism by key factors in bone metabolism signaling pathways. This paper reviewed the effects of exercise on bone metabolism pathways and their mechanisms.

Eleven patients underwent acetabulum revision using modified anterolateral approach due to acetabulum loosening but femoral prosthesis in sound fixation following total hip arthroplasty in Department of Joint Surgery,Tianjin Hospital between August 2002 and February 2005. During the mean follow-up of 4.2 years,all 11 patients gained primary stable fixation and good function. One patient underwent another revision due to infection; one developed femoral prosthesis loosening and underwent femoral revision. X-ray of the other patients showed no loosening or dislocation or radiotransparent region surrounding the prosthesis. One patient developed lateral femoral cutaneous nerve injury and relieved 6 months later.

From February 2002 to May 2007,9 cases(9 hips) of periprosthetic fractures during the primary total hip arthroplasty for developmental dysplasia of the hip were selected,including 1 male and 8 females aged 52-69 years.In the primary total hip arthroplasty,femoral prosthesis with the same size as intramedullary reamer and acetabular prosthesis with 2 mm diameter larger than acetabular reamer were used.The pain,function,range of motion and degree of deformity were accessed using the Harris score.The patients were followed for 1-6 years.Among the 9 patients with periprosthetic fractures,4 acetabular fractures were stable which were treated by additional augmentation screws,and 1 fracture was unstable which was treated by structural bone grafting and additional screws.And there was one Vancouver type AG fracture which was treated by cerclage wire,3 Vancouver B1 fractures which were fixed by locking compression plate(LCP) or cerclage wire,and one Vancouver type C fracture which was also fixed by LCP.No component loosening or migration was found in the postoperative X-ray.The mean Harris score was 87.2 at the final follow-up.The results of the study show that during the primary total hip arthroplasty in patients with developmental dysplasia of the hip,the oversize of the acetabular component should be controlled to equal to or less than 2 mm.For patients with severe osteoporosis,acetabular components with the same size to reamer are recommended combined with additional screws,or cemented cup.When an acetebular fracture is found during total hip arthroplasty,we could use additional screws or bone grafting.Once a periprosthetic femoral fracture occurs during the operation,methods of fixation should be selected based on the type of the fracture and stability of the prosthesis.