Clinical application and effectiveness of patellar tunnel locator in medial patellofemoral ligament reconstruction surgery / 中国修复重建外科杂志

OBJECTIVE@#To evaluate the operability and effectiveness of a self-developed patellar bone canal locator (hereinafter referred to as "locator") in the reconstruction of the medial patellofemoral ligament (MPFL).@*METHODS@#A total of 38 patients with recurrent patellar dislocation who met the selection criteria admitted between January 2022 and December 2022 were randomly divided into study group (the patellar canal was established with a locator during MPFL reconstruction) and control group (no locator was used in MPFL reconstruction), with 19 cases in each group. There was no significant difference in baseline data between the two groups ( P>0.05), such as gender, age, body mass index, disease duration, patella Wiberg classification, constituent ratio of cartilage injury, Caton index, tibia tubercle-trochlear groove, and preoperative Lysholm score, Kujal score, Tegner score, visual analogue scale (VAS) score, and so on. The Lysholm score, Kujal score, Tegner score, and VAS score were used to evaluate knee joint function before operation and at 3 days,1 month, 3 months, and 6 months after operation. The ideal prepatellar cortical thickness and canal length were measured before operation, and the actual prepatellar cortical thickness and canal length after operation were also measured, and D1 (the distance between the ideal entrance and the actual entrance), D2 (the ideal canal length minus the actual canal length), D3 (the ideal prepatellar cortical thickness minus the actual prepatellar cortical thickness) were calculated.@*RESULTS@#Patients in both groups were followed up 6-8 months (mean, 6.7 months). The incision length and intraoperative blood loss in the study group were smaller than those in the control group, but the operation time was longer than that in the control group, the differences were significant ( P<0.05). There was no complication such as incision infection, effusion, and delayed healing in both groups, and no further dislocation occurred during follow-up. One patient in the study group had persistent pain in the anserine area after operation, and the symptoms were relieved after physiotherapy. The VAS score of the two groups increased significantly at 3 days after operation, and gradually decreased with the extension of time; the change trends of Lysholm score, Kujal score, and Tegner score were opposite to VAS score. Except that the Lysholm score and Kujal score of the study group were higher than those of the control group at 3 days after operation, and the VAS score of the study group was lower than that of the control group at 3 days and 1 month after operation, the differences were significant ( P<0.05), there was no significant difference in the scores between the two groups at other time points ( P>0.05). Patellar bone canal evaluation showed that there was no significant difference in preoperative simulated ideal canal length, prepatellar cortical thickness, and postoperative actual canal length between the two groups ( P>0.05). The postoperative actual prepatellar cortical thickness of the study group was significantly smaller than that of the control group ( P<0.05). D1 and D3 in the study group were significantly higher than those in control group ( P<0.05), but there was no significant difference in D2 between the two groups ( P>0.05).@*CONCLUSION@#The locator can improve the accuracy of MPFL reconstruction surgery, reduce the possibility of intraoperative damage to the articular surface of patella and postoperative patellar fractures.

Metabolic patterns of 11C-CFT and 18F-FDG PET/CT imaging in tremor and non-tremor Parkinson's / 中华核医学与分子影像杂志

Objective To investigate the metabolic patterns of 11C-2-beta-carbomethoxy-3-beta-(4-fluorophenyl)tropane (CFF) and 18F-fluorodeoxyglucose (FDG) PET/CT imaging in patients with tremor and non-tremor Parkinson's disease (PD).Methods From March 2018 to March 2019,28 PD patients (19 tremor patients:14 males and 5 females,age:(59.9±11.4) years;9 non-tremor patients:3 males and 6 females,age:(62.6±9.0) years) were enrolled.For the two groups,the 11C-CFT uptake values in caudate nucleus,anterior putamen and posterior putamen as well as 18F-FDG uptake values in all brain regions were calculated by regions of interest (ROI) method.Two-sample t test or Mann-Whitney u test were used to analyze the data.Results Caudate nucleus 11C-CFT uptake in PD patients with tremor was higher than that without tremor (3.03±0.51 vs 2.60±0.62;t =2.687,P＜0.05).Yet thalamus glucose uptake of non-tremor PD patients showed more active than tremor patients (1.14±0.05 vs 1.10±0.03;t =3.449,P＜0.01).Sorted by modified Hoehn-Yahr stage,tremor patients in advanced stage (stage≥2.5) were characterized by glucose uptake increase in the putamen and cerebellum compared with non-tremor advanced group (1.27±0.04 vs 1.21±0.05,0.94±0.04 vs 0.86±0.08;t values:2.695 and 2.492,both P＜0.05).Metabolic decrease in the premotor areas was observed in tremor patients in advanced stage compared with early stage (1.07±0.02vs 1.10±0.03;t=2.053,P＜0.05).Conclusion 11C-CFT and 18F-FDG PET/CT imaging can indicate different metabolic patterns between tremor and non-tremor PD,thus providing information for clinical practice and differential diagnosis.

Effects of Wenxin granules and bisoprolol fumarate combined with aerobic exercise on serum matrix metallo-proteinase-1 and N-terminal pro-brain natriuretic peptide levels in patients with unstable angina pectoris / 中国基层医药

Objective To investigate the influence of Wenxin granules and bisoprolol fumarate combined with aerobic exercise on serum matrix metalloproteinase－1(MMP－1) and N－terminal pro－brain natriuretic peptide (NT－proBNP) levels in patients with unstable angina pectoris.Methods From January 2016 to February 2018, 92 patients with unstable angina pectoris in Lishui Hospital of Traditional Chinese Medicine were selected and randomly divided into control group(n=46) and study group(n=46) according to the digital table.On the basis of routine intervention,the control group was given bisoprolol fumarate for 2 weeks and aerobic exercise for 1 month, while the study group was given bisoprolol fumarate,aerobic exercise and Wenxin granules for 2 weeks.The frequency and duration of angina pectoris before and after 1 month of treatment,clinical efficacy,serum MMP－1 and NT－proBNP levels,blood rheology index(plasma viscosity,whole blood high shear viscosity,total blood low－cut viscosity,fibrinogen) and incidence of adverse reactions were observed.Results After 1 month of treatment,the frequency of angina pectoris was lower than that before treatment,and the duration was shorter than that before treatment,which in the study group [(2.09 ± 0.65)times/week,(2.24 ± 0.83)min/time] were better than those in the control group(t1=10.898,t2= 9.302,all P<0.05).The total effective rate of the study group(91.30% ) was higher than that of the control group (73.91% )(χ2 =4.842,P<0.05).After 1 month of treatment,the serum levels of MMP－1 and NT－proBNP in the two groups were lower than those before treatment,which in the study group [(196.10 ± 55.01) g/L,(403.82 ± 114.15)ng/L] were lower than those in the control group ( t1 =3. 619, t2 =4. 185, P <0. 05 ). At the end of treatment,the plasma viscosity,whole blood high－viscosity,whole blood low－cut viscosity,fibrinogen level in the two groups were lower than those before treatment,which in the study group were lower than those in the control group(all P<0.05).The incidence rate of adverse reactions in the study group was 15.22% ,which in the control group was 10.87% ,there was no statistically significant difference between the two groups (χ2 =0.383,P>0.05).Conclusion The combination of Wenxin granules, bisoprolol fumarate and aerobic exercise for patients with unstable angina pectoris not only can reduce the frequency of angina pectoris,MMP－1 and NT－proBNP levels,but also can improve the treatment of disease.Besides,it does not increase the risk of adverse reactions.

Effects of Wenxin granules and bisoprolol fumarate combined with aerobic exercise on serum matrix metallo-proteinase -1 and N - terminal pro - brain natriuretic peptide levels in patients with unstable angina pectoris / 中国基层医药

Objective To investigate the influence of Wenxin granules and bisoprolol fumarate combined with aerobic exercise on serum matrix metalloproteinase -1(MMP -1) and N - terminal pro - brain natriuretic peptide (NT - proBNP) levels in patients with unstable angina pectoris. Methods From January 2016 to February 2018, 92 patients with unstable angina pectoris in Lishui Hospital of Traditional Chinese Medicine were selected and randomly divided into control group(n = 46) and study group(n = 46) according to the digital table. On the basis of routine intervention,the control group was given bisoprolol fumarate for 2 weeks and aerobic exercise for 1 month, while the study group was given bisoprolol fumarate,aerobic exercise and Wenxin granules for 2 weeks. The frequency and duration of angina pectoris before and after 1 month of treatment,clinical efficacy,serum MMP -1 and NT - proBNP levels,blood rheology index(plasma viscosity,whole blood high shear viscosity,total blood low - cut viscosity,fibrinogen) and incidence of adverse reactions were observed. Results After 1 month of treatment,the frequency of angina pectoris was lower than that before treatment,and the duration was shorter than that before treatment,which in the study group [(2. 09 ± 0. 65)times/ week,(2. 24 ± 0. 83)min/ time] were better than those in the control group(t1 = 10. 898,t2 =9. 302,all P < 0. 05). The total effective rate of the study group(91. 30％ ) was higher than that of the control group (73. 91％ )(χ2 = 4. 842,P < 0. 05). After 1 month of treatment,the serum levels of MMP - 1 and NT - proBNP in the two groups were lower than those before treatment,which in the study group[(196. 10 ± 55. 01) g/ L,(403. 82 ± 114. 15)ng/ L] were lower than those in the control group ( t1 = 3. 619, t2 = 4. 185, P < 0. 05). At the end of treatment,the plasma viscosity,whole blood high - viscosity,whole blood low - cut viscosity,fibrinogen level in the two groups were lower than those before treatment,which in the study group were lower than those in the control group(all P < 0. 05). The incidence rate of adverse reactions in the study group was 15. 22％ ,which in the control group was 10. 87％ ,there was no statistically significant difference between the two groups (χ2 = 0. 383,P > 0. 05). Conclusion The combination of Wenxin granules, bisoprolol fumarate and aerobic exercise for patients with unstable angina pectoris not only can reduce the frequency of angina pectoris,MMP - 1 and NT - proBNP levels,but also can improve the treatment of disease. Besides,it does not increase the risk of adverse reactions.

Metabolic patterns of 11C-CFT and 18F-FDG PET/CT imaging in tremor and non-tremor Parkinson′s disease / 中华核医学与分子影像杂志

Objective@#To investigate the metabolic patterns of 11C-2-beta-carbomethoxy-3-beta-(4-fluorophenyl)tropane (CFT) and 18F-fluorodeoxyglucose (FDG) PET/CT imaging in patients with tremor and non-tremor Parkinson′s disease (PD).@*Methods@#From March 2018 to March 2019, 28 PD patients (19 tremor patients: 14 males and 5 females, age: (59.9±11.4) years; 9 non-tremor patients: 3 males and 6 females, age: (62.6±9.0) years) were enrolled. For the two groups, the 11C-CFT uptake values in caudate nucleus, anterior putamen and posterior putamen as well as 18F-FDG uptake values in all brain regions were calculated by regions of interest (ROI) method. Two-sample t test or Mann-Whitney u test were used to analyze the data.@*Results@#Caudate nucleus 11C-CFT uptake in PD patients with tremor was higher than that without tremor (3.03±0.51 vs 2.60±0.62; t=2.687, P<0.05). Yet thalamus glucose uptake of non-tremor PD patients showed more active than tremor patients (1.14±0.05 vs 1.10±0.03; t=3.449, P<0.01). Sorted by modified Hoehn-Yahr stage, tremor patients in advanced stage (stage≥2.5) were characterized by glucose uptake increase in the putamen and cerebellum compared with non-tremor advanced group (1.27±0.04 vs 1.21±0.05, 0.94±0.04 vs 0.86±0.08; t values: 2.695 and 2.492, both P<0.05). Metabolic decrease in the premotor areas was observed in tremor patients in advanced stage compared with early stage (1.07±0.02 vs 1.10±0.03; t=2.053, P<0.05).@*Conclusion@#11C-CFT and 18F-FDG PET/CT imaging can indicate different metabolic patterns between tremor and non-tremor PD, thus providing information for clinical practice and differential diagnosis.

Effect of Curcumin Combined with Cisplatin on Human Tongue Squamous Cell Carcinoma Tca?8113 Cells / 中国医科大学学报

Objective To observe the effect of curcumin combined with cisplatin on the proliferation of human tongue squamous cell carcinoma Tca?8113 cells,and explore the possible mechanism of their anti?tumor effect in vitro. Methods In this study,the samples were divided into four groups:curcumin,cisplatin,curcumin combined with cisplatin,and control. Detection of rate of inhibition of Tca?8113 cell proliferation was carried out by MTT assay. This was followed by observation of the morphological changes of the nuclei by Hoechst 33258 fluorescence staining. Subse?quently,cellular apoptosis was assayed by flow cytometry,and expression of Notch1 and epidermal growth factor receptor(EGFR)was examined by Western blotting. Results Results of MTT assay showed that curcumin combined with cisplatin inhibited the proliferation of tongue squamous cell carcinoma to a greater extent than either curcumin or cisplatin alone(P<0.05). Flow cytometry analysis indicated that,unlike curcumin or cisplatin alone,curcumin combined with cisplatin noticeably induced apoptosis(P<0.05). Results of Western blotting revealed that the expres?sion of Notch1 was upregulated,whereas the expression of EGFR was downregulated to a greater extent in the control group than in cells treated with curcumin or cisplatin alone. Unlike curcumin and cisplatin groups,the combined group revealed statistically significant expressions of Notch1 and EGFR(P<0.05). Conclusion Curcumin and cisplatin have a combined effect on inhibition of proliferation of human tongue squamous cell carcinoma Tca?8113 cells. The mechanism may be related to upregulation of the Notch1 signaling pathway and downregulation of the EGFR signal?ing pathway.

Study on expression and correlation of Rac1 and E-cadherin protein in oral squamous cell carcinoma / 天津医药

Objective To investigate the expression levels of Rac1 and E-cadherin and their correlation in oral squamous cell carcinoma, and to explore their relations to clinical pathological parameters. Methods The expression levels of Rac1 and E-cadherin were detected in 22 samples of oral squamous cell carcinoma and 8 samples of para-carcinoma tissue by using immunohistochemistry technique (SP). The patients were divided into two groups according to the clinicopathological parameters. The differences of Rac1 and E-cadherin expression levels were analyzed between the groups. Results The positive expression rates of Rac1 were 1/8 and 77.3%(17/22) in para-carcinoma tissue and oral squamous cell carcinoma, respectively. The difference was statistically significant (P=0.003). The positive expression rates of E-cadherin were 8/8 and 31.8%(7/22), and there was a difference between them (P=0.002). The Rac1 protein expression rate was increased and E-cadherin was decreased in oral squamous cell carcinoma. There were no significant differences in Rac 1 and E-cadherin between different age and gender groups. There was significant difference in Rac1 expression between patients with metastasis and patients without metastasis (P=0.021). While there was no difference in E-cadherin expression between patients with metastasis and patients without metastasis. No correlation was found between Rac 1 and E-cadherin expressions in oral squamous cell carcinoma. Conclusion The high expression of Rac1 and low expression of E-cadherin may play an important role in the tumorigenesis and progression of oral squamous cell carcinoma.

Clinical Application of Fiberoptic Bronchoscopy in Treatment of Ventilator Associated Pneumonia / 昆明医科大学学报

Objective To study the value of fiberoptic bronchoscopy in treatment of ventilator associated pneumonia. Methods The 168 cases of ventilator associated pneumonia in ICU were randomly divided into treatment group and control group, each group of 84 cases, were given oxygen, anti-inflammatory, expectorant treatment. Treatment group was given fiber bronchoscope sputum suction and irrigation, control group was given sputum suction tube, then we observed the oxygenation changes after sputum suction of two groups of patients, compared clinical efficacy, sputum culture positive rate, antibiotic using time and staying time in the ICU between two groups of patients. Results Compared with control group, in treatment group SaO2, PaO2 and oxygen index were significantly improved (P< 0.05) ; in treatment group CRP, PCT and IL-6 were significantly improved (P <0.05) . In the treatment group, the total effectiveness is significantly higher than the control group;antibiotic using time and staying time of ICU were obviously shorter than the control group (P< 0.05) . Conclusion Fiberoptic bronchoscopy irrigation treatment can improve oxygenation, antibiotic using time and staying time in ICU of ventilator associated pneumonia patients, and is worthy of clinical application.

Experimental Study of the Repair of Rabbit Skull Defects with Allogeneic Tooth Derived Bone Graft Material / 中国医科大学学报

Objective To evaluate the osteogenesis of rabbit allogeneic tooth derived bone graft material by histological detection ,so as to provide quality and cheap repair materials for the repair of bone defects in dental implants. Methods The bone graft materials were prepared using rab?bits allogeneic extracted teeth. A total of 28 adult Japanese healthy rabbits were selected to establish the cranial defect model with three 8 mm diam?eter holes. The allogenic tooth derived bone graft material were implanted into the experimental group. The artificial bone repair material was used as the control group,and the control group did not receive any implantion. Tetracycline labeling was performed after operation,the specimens were taken at 4,8 and 12 weeks after operation,and then the gross observation,X?ray examination,preparation of hard tissue sections,and HE staining were carried out. Results Histological analysis at 4,8 and 12 weeks after operation showed that there was an increasing trend the new bone for?mation in both experimental group and the control group ,and the experimental group was better;the trabecular bone structure of the blank group was scarce and the change was not obvious. Conclusion Allogenic tooth derived bone graft materials can promote the repair of bone defect ,and the effect is better than that of artificial bone repair materials.

Comparison of Effects of Platelet Rich Fibrin and Concentrated Growth Factor on Schwann Cells / 中国医科大学学报

Objective To compare the effects of platelet rich fibrin(PRF)and concentrated growth factors(CGF)using Schwann cells as a pe?ripheral nerve model. Methods A total of 10 healthy volunteers aged 18 to 55 were randomly selected,and 10 mL venous blood was collected un?der aseptic conditions to prepare PRF and CGF. The cells were randomly divided into three groups,control group,PRF group and CGF group. The cell morphology was observed by inverted phase contrast microscope. The cell proliferation was analyzed by MTT assay. The secretion of nerve growth factor in supernatant was detected by enzyme?linked immunosorbent assay. Cell cycle was detected by flow cytometry. Results There was no significant difference of the morphology of cells in each group as observed under inverted phase contrast microscope. MTT results showed that the absorbance values of PRF group and CGF group were significantly higher than those of the control group(P<0.05). The secretion of nerve growth factor in the supernatant were significantly increased(P<0.05). The number of cells in S+G2M phase was significantly increased(P<0.01),but there was no significant difference between PRF group and CGF group. Conclusion Both PRF and CGF can promote proliferation of Schwann cells and increased the amount of nerve growth factor secretion ,but there is no significant difference between PRF and CGF in terms of improving cell proliferation and promoting nerve growth factor secretion.

Effects of platelet-rich fibrin on expression of BMP-6 during mandibular distraction osteogenesis / 天津医药

Objective To investigate the effects of platelet-rich fibrin (PRF) on BMP-6 expression during mandibular distraction osteogenesis. Methods Twenty-five mature rabbits were randomly divided into five groups. Mandibular osteoto?mies were performed corticectomy in bilateral mandibles of rabbits. PRF was implanted in the one side of mandibles, which was used as experimental group. Another side of madibular was used as control group. Rabbits were sacrificed and the dis?tracted calluses were harvested and processed for HE and BMP-6 immunohistochemistry staining at 1, 3, 7, 14 and 28 days after the end of distraction, respectively. The expressions of BMP-6 in the distracted calluses were analyzed by cell digital imaging software. Results The regenerated bone was found in the distraction gap after mandibular lengthening. Expres?sions of BMP-6 were co-localized in cytoplasm of osteoblasts and newly embedded osteocytes. Compared with control group, the positive cell rate and positive area percentage of BMP-6 were significantly higher on the 1st, 3th and 7th day after the distraction in experimental group (P<0.05). There were no significant differences in positive cell rate and positive area per?centage of BMP-6 at 14-day and 28-day after the distraction between experimental group and control group. Conclusion PRF can accelerate bone formation of mandibular distraction osteogenesis in rabbits. BMP-6 may play important role at the early stage of mandibular distraction.

The changes of ghrelin, growth hormone, growth hormone releasing hormone and their clinical significances in patients with chronic obstructive pulmonary disease / 中华内科杂志

Objective To investigate the changes of plasma ghrelin,growth hormone (GH) and growth hormone releasing hormone (GHRH) and gastric ghrelin in patients with chronic obstructive pulmonary disease( COPD ) and to explore their clinical significances.Methods Plasma ghrelin,GH,GHRH,TNFα,IL-6 and C reactive protein (CRP) were measured in 40 COPD patients and 20 controls with chronic bronchitis. Correlated factors of plasma ghrelin,TNFα,IL-6,CRP were analyzed. Body composition was assessed with bioelectrical impedance analysis.The expression of gastric ghrelin in patients with COPD was detected.Results Plasma ghrelin was higher in the underweight patients than in the normal weight patients and in the controls [ ( 1.78 ± 0.46 ) ng/L,( 1.39 ± 0.46 ) ng/L,( 1.36 ± 0.39 ) ng/L,respectively].Plasma GH was lower in the underweight patients than in the normal weight patients and in the controls [(4.12 ±0.83) μg,/L,(5.17 ±0.72) μg/L,(6.49 ± 1.13) μg/L,respectively].Plasma GHRH was lower in the underweight patients than in the normal weight patients and in the controls [ (20.43 ± 4.41 ) ng/L,(23.47 ± 3.97) ng/L,( 27.48 ± 10.06) ng/L,respectively ].Plasma ghrelin was higher in the underweight patients than in the controls ( P ＜ 0.01 ).Plasma ghrelin was higher in the underweight patients than in the normal weight patients with COPD.Plasma ghrelin (log transformed) was negatively correlated with BMI and percentage of body fat in the COPD patients.Plasma GHRH was positively correlated with ghrelin in the underweight patients ( r =0.515,P ＜ 0.05 ),while no correlation was found between plasma G H and ghrelin in the underweight patients (r =0.415,P ＞ 0.05 ).Plasma ghrelin was positively correlated with TNFα and IL-6 in the underweight patients.The gastric expression of ghrelin showed no evident difference between the patients with COPD and the controls.Conclusions The plasma GH in COPD patients may not be correlated with ghrelin.The plasma ghrelin level may be a useful indicator for malnutrition in COPD patients.Plasma ghrelin might be involved in the pathogenesis of CODP by affecting the body energy metabolism.

The efficacy of donepezil for post-stroke aphasia:a pilot case control study / 中华内科杂志

Objective To evaluate the efficacy of donepezil for post-stroke aphasia. Methods Sixty patients with acute post-stroke aphasia were divided into treatment group and a control group. All patients had been treated for secondary prevention according to the guideline. The treatment group received donepezil hydrochloride (5 mg/d) for 12 weeks. The efficacy of treatment was measured by comparing the changes of scores of Western Aphasia Battery ( WAB) between baseline and 12 weeks later. Results Compared with the baseline, the changes of scores of all items of WAB and Aphasia Quotient ( AQ) in both group after 12 weeks follow-up were great, however, the change of AQ was significantly greater in donepezil group (34. 14 ± 17. 70) than that in control group (20. 69± 17. 26) (P =0. 004). The patients in donepezil group also showed significant recovery in spontaneous speech, comprehension, repetition, and naming than those in control group (P <0. 05 ). The rate of significant improving in donepezil group was 60. 0% which was significantly greater than that in control group ( 26. 7% ) ( P = 0. 009 ). Conclusion There are spontaneous recovery of post-stroke aphasia within 3 months. Donepezil may facilitate the recovery in spontaneous speech, comprehension,repetition,and naming functions.

Culture of rabbit periosteal osteoblasts using modified enzymatic digestion combined with explant method / 中国组织工程研究

BACKGROUND:Periosteal osteoblasts possess strong reproductive activity,as well as osteoblastic differentiation potential,which is an ideal seed cell if can shorten the culture time.OBJECTIVE:Modified enzymatic digestion was used to culture rabbits'osteoblasts.and to study the adherence and proliferation of osteoblasts on the sudace of sandblasting titanium.MEITHODS:Periostea were harvested from the theanteromedial surface of the proximal tibia of male,Japanese white rabbits,and cultured as follow:①Routine method:Digested with 0.25%trypsinase at 37 ℃ for 30 minutes,followed by digestion with 0.1%type I collagenase at 37 ℃ for 30 minutes,vibration.removed trypsinase and dried.After 2 hours,DMEM containing 15% fetal bovine serums were added.②Modified method:30 minutes culture of type I collagenase was prolonged to 1 hour.The osteoblasts were identified by alkaline phosphatase staining and calcium node staining.The adherence and proliferation of osteoblasts cultured on sandblasting surface were measured by scanning electron microscopy and MTT.RESULTS AND CONCLUSION:Five days after culture.the periosteal steoblasts crawled out from tissues,gathered as monolayer with tdangle or polygon at after 25 days of modified culture.After 1 month of culture,superposition growth of calcium nodus appeared.The cultured cells possessed the morphological characteristic and biological behavior of osteoblasts.which were positive to alkaline phosphorase and calcium node staining.The time of cells cultured with routine method covered flask delayed 12 days than modified method.The osteoblasts were inseted into sandblasting titatium with pseudopodium.However,the adherence and proliferation of osteoblasts cultured on sandblasting surface had no obviously difference between two culture methods.The results suggested that modified enzymatic digestion can sho～en the culture time without effect on adherence and proliferation of osteoblasts.

Effect of personalized prefabricated titanium template, autologous bone and nano-hydroxyapatite on reconstruction of maxilla defect in rabbits / 中国组织工程研究

BACKGROUND: Autologous bone, bone substitute materials and guided bone regeneration (GBR) technique can repair jaw defects, but the absorption speed of bone substitute materials and GBR membrane are faster than the formation speed of new bone, therefore, it affects the volume and shape of new bone.OBJECTIVE: To investigate the role of personalized prefabricated titanium template, autologous bone and nano-hydroxyapatite on restoration of maxillary defect in rabbit.METHODS: A total of 18 rabbits were randomly divided into two groups, and maxillary alveolar defect with 10 mm length and 5 mm high was created. The template was implanted in both two groups, and fastened with titanium screws. Autologous and nano-hydroxyapatite were placed into the defect in experimental group; neither autologous bone nor bone substitute materials were implanted into the defect in control group. New bone formation, X-ray findings, and histological changes with HE stain were carded out 4, 8 and 12 weeks postoperatively.RESULTS AND CONCLUSION: The quality of new bone in experimental group was batter than that in control group 4 weeks postoperatively, but the quality of new bone was almost the same 8 and 12 weeks postoperatively. By paired t-test, there was significant difference in new bone density between the experimental group and the control group 4 .weeks after operation (P<0.01), but there was no significant difference in new bone density between the experimental group and the control group 8 and 12 weeks after operation (P > 0.05). Autologous bone and nano-hydroxyapatite can restore the defect of maxillary alveola.Personalized prefabricated titanium template can play an important role of screen membrane and external scaffold in new bone formation, and remain shape of new bone.

The effect of Huagan Jiedu decoction on Cytokine in rats of chronic hepatic injury / 国际中医中药杂志

Objective To explore the mechanism of Huagan Jiedu decoction in treatment of chronic hepatitis B by testing the influence of the decoction on Serum IL-2, IL-4 and IFN-γ of rat models of chronic hepatic injury. Methods The model of Chronic hepatic injury was established by subcutaneously injecting 40% CCl4-olive oil solution in rats according to the ratio of 3ml per kg. of body weight. 60 healthy rats were divided randomly into a normal group, a model group, a low dose of Huagan Jiedu decoction group, a large dose of Huagan Jiedu decoction group, and a control group (Qingre Jiedu tablet group), 15 cases in each group. The Serum IL-2, IL-4 and IFN-γ were detected in each group separately. Results Compared with the normal group, the Serum IL-2 and IFN-γ were decreased (t=2.401, 2.337, P=0.0349, 0.0378) and the Serum IL-4 was increased (t=2.896, P=0.00861 ) in the model group; Compared with the model group, the Serum IL-2 and IFN-γ were increased (t=2.417, 2.344, P=0.0341, 0.0372, P＜0.05; t=3.114, 2.988, P=0.0052, 0.0068) in the large Huagan Jiedu decoction group and the control group, while the Serum IFN-γ was increased (t=3.049, P=0.0062) in the low dose of Huagan Jiedu decoction group and the Serum IL-4 was decreased (t=3.102, 3.017, 2.979, P=0.0061, 0.0065, 0.0069)in both Huagan Jiedu decoction groups and the control group. Conclusion Large dose of Huagan Jiedu decoction has sound therapeutic effects on rats with chronic hepatic injury by decreaseing the content of the Serum IL-4 and increasing IL-2 and IFN-γ, and adjusting th1/th2 balance.

Influence of nickel-chromium alloy and gold-platinum alloy PFM on canine gingival tissues / 实用口腔医学杂志

Objective: To compare the influence of nickel-chromium alloy and gold-platinum alloy porcelain-fused-to-metal ( PFM ) on ultramicrostructure of canine gingival tissues, to survey the biological effects after PFM full crown restoration, and to provide data for selection of PFM materials. Methods; The nickel-chromium alloy and gold-platinum alloy PFM full crowns were used to repair canines in 3 healthy dogs. The microstructure of canine gingival tissue was observed through light microscope and transmission electron microscope. Apoptosis of canine gingival cells was detected by TUNEL method. Results; Under light microscope, inflammatory cell infiltration and partial bleeding were seen in the nickel-chromium alloy PFM full crown repaired canine gingival tissues. Under transmission electron microscope, large amount of cell apoptosis and neuclear condensation were observed in these tissues,and apoptotic index was 58.63% ±11. 12%. While under light microscope, inflammatory cell infiltration and partial bleeding were not seen in the gold-platinum metal PFM full crown repaired canine gingival tissues. Under transmission electron microscope, only small amount of cell apoptosis was detected in these tissues,and apoptotic index was 26. 90% ± 17. 35%. Statistical significance was found in both nickel-chromium alloy group and gold-platinum metal group compared to control group. There was also statistical significance between nickel-chromium alloy group and gold-platinum metal group in cell apoptosis numbers (P <0. 05). Cell apoptosis number in nickel-chromium alloy group was much higher than that in gold-platinum metal group. Conclusion; The negtive effects on ultramicrostructure of gingival tissue using nickel-chromium alloy PFM are more evident than using gold-platinum metal. When select PFM to repair defect teeth, it is better to select the inactive gold-platinum metal PFM as base crown.

Effects of recombinant human bone morphogenetic protein 2 on integrin beta 1 expression during mandibular distraction / 中国组织工程研究

BACKGROUND:Integfin levels can affect cellular function,regulate bone formation and bone resorption.However,this process need activated by other factors,whether recombinant human bone morphogenetic protein 2 (rhBMP-2)has this effect is poorly understood.OBJECTIVE:To study the effects of the different concentration of rhBMP-2 on the expression of inergrin β_1 during the mandibular dfScraction in rabbits.DESIGN,TIME AND SETTING:The randomized,controlled.animal grouping experiment of histological observation was performed at the Animal ExperimentaI Center and Immunohistochemistry Center of Liaoning Medical University from May 2006 to May 2007.MATERIALS:A total of 45 Japanese white rabbits were used.rhBMP-2 was supplied by Beijing Academy of Military Medical Sciences.METHODS:The rabbits were prepared for mandibular distraction models and randomly assigned into control,1.5 mg rhBMP-2 and 3.0 mg rhBMP-2 groups.with 15 animals in each group.Collagen sponge and collagen binding proteins were implanted into mandibles of rabbits,respectively,and distraction 0.4 mm per time,twice per day for 5 days.The mandibles were lengthened 4 mm.MAIN OUTCOME MEASURES:The expression of integrin 131 was detected using immunohistochemistry at days 1,3,7,14,and 28 after distraction.RESULTS:All rabbits were included in the final analysis.The integdn β_1 mainly expressed at 7 days after distraction.At the same time point.when concenrtation rhBMP-2 was increased,the positive integrin β_1 rate and positive stained area percentage were increased(P<0.05).Compared to the same concentration,the positive integrin β_1 rate and positive stained area percentage were gradually increased as time prolonged (P<0.05).CONCLUSION:The integdn β_1 expression can be promoted by rhBMP-2 at the anaphase of mandibular distraction osteogenesis in a concentration-dependent manner.

Preemptive analgesia of dextromethorphan and tramadol for postoperative soreness / 中国基层医药

Objective To investigate the clinical effect of intramuscular dextromethorphan and tramadol premedication for postoperative analgesia.Methods 60 cases of ASA Ⅰ～Ⅱ underwent surgical procedures of extremitas inferior were divided into 3 groups randomly.Patients in every group were provided with dextromethorphan 20mg,tramadol 2mg/kg and normal sodium 4ml(control group) respectively.All patients received PCEA analgesia postoperatively.The postoperative visual analogue scale(VAS),ramay score,consumption of paregonic and adverse reactions were observed.Results After operation,VAS score in group of dextromethorphan was lower than that in control group significantly(P

Application of Narcotic Analgesics in Four Hospitals in Xinjiang Area During 2006～2008 / 中国药房

OBJECTIVE:To probe into the status quo and tendency of the application of narcotic analgesics in Xinjiang area.METHODS:By a retrospective study,the application data and the related indexes of the narcotic analgesics in 4 general hospitals in Xinjiang area during 2006～2008 were analyzed statistically.RESULTS:The consumption sum of narcotic analgesics in this area increased year by year with an annual growth rate of more than 80%.Leading the list in terms of DDDs were Morphine sustained-release tablets and fentanyl injection;the DDDs of pethidine injection was on the decrease.CONCLUSION:The application of narcotic analgesics in Xinjiang area tended to be rational more and more;however,its rational use remains to be emphasized further.