Objective To study the combined toxic effects of fluoride and aluminum on the liver of mouse and the probable mechanism. Methods Kunming mice were randomly divided into nine groups and treated with fluoride and aluminum through drinking water:control(tap water)group, 50 mg/L fluoride group, 150 mg/L fluoride group, 200 mg/L aluminum group, 600 mg/L aluminum group, 50 mg/L fluoride+200 mg/L aluminum group, 50 mg/L fluoride+600 mg/L aluminum group, 150 mg/L fluoride+200 mg/L aluminum group, 150 mg/L fluoride+600 mg/L aluminum group. After 24 weeks of treatment, the activity of ALT, AST, the content of TBIL, DBIL, IBIL, ALB, Ca, P and Mg in the serum was determined. Results Different doses of single fluoride or fluoride+aluminum led to significant different changes in the liver function(single fluoride:F=2.61, P0.05). Compared with the control group, the Ca level in the serum decreased in the exposed groups except 150 mg/L fluoride+600 mg/L aluminum group(P0.05). Conclusion The combination of fluoride and aluminum at certain levels has a toxic effect on the liver, but the combination of fluoride and aluminum at high doses shows an antagonistic effect.

Objective\ To further clarify the biological effects of TGF?1 on blastocyst implantation. Methods We used female adult Kunming mice to mate with male for observing the distribution of TGF?1 and its receptor at different stages of implantation with immunohistochemical method. Results\ Compared with nonpregnancy,TGF?1 and its receptor immunostaining markedly increased in epithelial and glandual cells on day 4 of pregnancy.The moderate extracellular staining of TGF?1 was present around the fibroblasts.On day 5\|6 of pregnancy,strong immunostaining in intensity of TGF?1 and its receptor was noted in primary decidual zone.With blastocyst invasion,TGF?1 and its receptor immunostaining diffused in decidual cells. Conclusion\ TGF?1 might play an important role via its receptor during blastocyst implantation.\;

Objective To explore the haemostatic efficacy of cervical progressing suture in treating intractable cervical canal hemorrhage during cesarean section(CS) in placenta previa.Methods Sixty patients suffering from intractable cervical canal hemorrhage during CS due to central placenta previa were chosen and divided into the cervical progressing suture(observation roup,30 cases) and the uterine cavity ribbon gauze packing group(control group,30 cases).The intraoperative operating time,intraoperative bleeding amount,postoperative 24 h hemorrhage amount,hysterectomy and puerperal infection were compared between the two groups.Results The intraoperative operation time in the observation group and control group were (3.15± 1.60)min and (6.10±2.35) min respectively,the intraoperative bleeding amount in the observation group and control group were (422.00 ±-186.98)mL and (642.25±344.42)mL respectively,postoperative 24 h bleeding amounts were (583.23±=198.33)mL and (825.23±=373.50)mL respectively,the differences between the two groups were statistically significant(P＜0.05).No hysterectomy and no complications ocurred in each group.Conclusion Adopting the cervical progressing suture in treating intractable cervical canal hemorrhage during cesarean section(CS) due to placenta previa is simple to operate and has good effect.

BACKGROUND: Therapeutic methods for of peripheral facial nerve injury include surgery, physical therapy and drug treatment, but the treatment effect is not ideal in some certain cases. OBJECTIVE: To study the effect of autologous platelet rich plasma on repair of facial nerve injury. METHODS: The bilateral destroyed buccal nerve branches of the 10 white rabbits were put in silica gel nerve regeneration chamber, one side injected with platelet rich plasma as experimental group, the other side injected with normal saline as control group. The general observation, neuroelectrophysiology detection, histological observation, image analysis and evaluation of facial nerve regeneration recovery were performed at 8 weeks after surgery. RESULTS AND CONCLUSION: The action potential latency of the orbicularis oris at the experimental side was significantly lower than that at the control side, and the action potential amplitude (M wave) of compound nerve muscle of the experimental side was significantly higher than that of the control side (P < 0.01). Compared with the control side, the regenerative nerves of the experimental side were more mature with more regenerative axons, and the differentiation of myelin sheath was more mature and the thickness of myelin sheath was wel -distributed. Meanwhile, the diameters of axons were closed to the normal diameter, and the nerve axons were more intensive and arranged more regularly, the outer membrane of nerve fiber was thicker and the col agen fiber and elastic fiber layer were increased when compared with the control group. The number of regenerative axons of the control side was less, and the axons were distributed irregularly and poorly developed, and a large number of fibrous connective tissues were observed. The vacuolar degeneration at the control side was more than the experimental side. The regenerated nerve in the experimental side was better than the control side in the diameter of myelinated axon, area, myelin sheath thickness and axon count, and there were significant differences between two groups (P < 0.01). It indicates that platelet rich plasma has a promoting effect in the repair and regeneration of facial nerve.

Objective: To investigate the effect of chromium picolinate on egg production, egg quality, serum biochemical indices and immune response. Methods: A total of 120 49 w old Beijing Red commercial layers were randomly allotted to one of five treatments, and fed a basal corn soybean meal diet and the basal diet supplemented with 0.4,2.0,10.0 or 20.0 mg/kg Cr as chromium picolinate under heat stress for 30 days.Results: Cr increased average egg weight(P0.20) on egg yield, feed intake and feed/egg ratio. Added Cr at 0.4 ,2.0,10.0 mg/kg enhanced (P

ObjectiveTo observe the influence of Danshen injection on the serum levels of TNF-α,IL-6 in patients with acute pancreatitis(AP).Methods70 patients with AP were randomly divided into the experimental and control group.The two groups were given conventional anti-inflammatory,antisecretory,antispasmodic,inhibition of pancreatic secretion treatment,and the experimental group were treated with Danshen injection.Before trealment and 1,2,4,6 days after treatment,the serum TNF-α,IL-6 levels were measured in both groups.The time of blood and urine amylase(AMS) returned to normal was observed in both groups.Results2,4,6d after treatment,the serum TNF-α,IL-6 of the observation group were lower than that of the control group( all P ＜ 0.05 ) ;The blood AMS recovery time of the observation group was ( 2.55 ± 0.71 ) d,which had no significant difference with that of the control group(2.46 +0.82)d(t =0.32,P ＞0.05 ),while urinary AMS recovery time of the observation group was (4.30 ±0.72 ) d,which was shorter than that of the control group ( 6.84 ± 0.88 ) d ( t =0.02,P ＜ 0.05 ).ConclusionDanshen injection could reduce the serum TNF-α,IL-6 levels in patients with AP,and had no effect on the serum amylase,with the trend of faster lower urinary amylase.

Objective To investigate characteristics of symptoms, tongue and pulse of high-risk group of stroke, and provide evidence of differential treatment for stroke prevention, diagnosis and treatment of stroke, thus laying a solid foundation on further study of differential treatment system of high-risk groups of stroke. Methods With prospective observational method, 2536 cases of stroke were selected by multi-center screening, and characteristics of TCM symptoms, tongue, pulse and syndrome distribution in different gender and age were observed. Results The top five symptoms were:blurred vision (1670 cases, 65.9%), irritability (1458 cases, 57.5%), limp or pain on waist and knees (1445 cases, 57.1%), dizziness (1286 cases, 50.7%) and dry eyes (1274 cases, 50.2%). The top five tongue and pulse were:white moss (1401 cases, 55.2%), thin moss (1260 cases, 49.7%), string pulse (1201 cases, 47.4%), dark tongue (1168 cases, 46.1%) and red tongue (1027 cases, 40.5%). The detection rate of dizziness, insomnia, white coating, thin coating, etc. were higer in women than that in man (P<0.01). The detection rate of teeth shaking, greasy fur, yellow fur, string pulse, etc. were higher in man than that in woman (P<0.01). The detection rate of teeth shaking, dry eyes, thirst, dark tongue, red tongue, string pulse, etc. in the elderly group were higher than the middle-aged one (P<0.01). The detection rate of irritability, numbness, shortness of breath, scalloped tongue, thin coating, deep pulse, etc. in the middle-aged group was higher than the aged one (P<0.01). Conclusion The clinical manifestations of high-risk group of stroke are complicated. There were root deficiency such as deficiency of spleen and kidney, and branch excess such as wind-fire and phlegm-stasis. Difference and regularity were showed in different gender and different age groups to some extent.

Objective To explore the association of sedentary life style with risk of metabolic syndrome (MS) and diabetes mellitus type 2 (T2DM).Methods A total of 6 016 local residents aged 18 years or older in Fujian province were recruited by multi-stage stratified cluster sampling method in 2010-2011.Data,including demographic information,physical activity and sedentary time were collected.Indices related to height,weight,waist circumference,blood pressure and blood lipid were determined while MS and T2DM were diagnosed by IDF (2005) and WHO (1999) criteria.Logistic regression was used to estimate the correlations between sedentary behavior and MS or T2DM.Results The prevalence rates of MS and T2DM were 19.0％ and 8.0％ respectively,in local residents aged 18 years or older,in Fujian province.The overall rate of sedentary behavior was 18.1％,with the mean sedentary time as 4.3 hours.Both data showed significantly differences (P＜0.001) among control group,MS without T2DM group,MS with T2DM group and T2DM without MS group.Compared with the group of sedentary time ＜2.0 h/d,1) the group with 2.0-3.5 h/d was significantly correlated with MT group (OR=1.44,95％ CI:1.03-2.03,P＜0.05),2) groups of 3.5-6.0 h/d and ≥6.0 h/d were significantly correlated with M,T,MT group,respectively (OR:1.49-1.76 and 1.28-1.58 respectively,95％ CI:1.19-2.45 and 1.02-2.23 respectively,P＜ 0.05),and 3) sedentary behavior was independently associated with an increased risk of MT group (OR=1.82,95％ CI:1.33-2.48,P＜0.01) and M group (OR=1.43,95％CI:1.14-1.78,P＜0.01),after the adjustment for factors as age,sex,cigarette smoking,alcohol drinking,BMI,education,occupation,sedentary behavior/sedentary time.Conclusion MS and T2DM were associated with sedentary lifestyle,but these findings should be confirmed through further longitudinal studies.

Objective To teach neurosurgical residents of standardized training by using teaching method with multi-modality visualization and to explore its application effects.Methods Total 122 students were randomly divided into two groups:multi-modality visualization teaching group (n=61) and traditional teaching group (n=61).The evaluation of teaching effect was conducted by questionnaire of students and the analysis of test scores after the course.Comparison between the two groups was made by using independent sample t test.Results Questionnaire showed that the satisfaction of teaching mode (88.5％),learning efficiency (93.4％),and training results (90.1％) with multi-modality visualization teaching group were statistically higher than traditional group (P＜0.05).Test score showed that results of theory test (88.5 ± 5.1),on-spot examination (91.6 ± 5.5),and overall score (89.3 ± 5.2) were also statistically higher in multi-modality visualization teaching group than that of control group (P＜0.05).There was no significant difference in clinical skills assessment between two groups.Conclusions Teaching with multi-modality visualization can significantly improve the efficiency of neurosurgical clinical teaching and promote the training effect of students,which provides a new strategy of neurosurgical clinical teaching.

Objective: To explore the effects of local transplantation of autologous adipose-derived stromal vascular fraction (SVF) on the hyperplastic scar (HS) formation in rabbit ears and the mechanism. Methods: Twenty-four New Zealand white rabbits were used to reproduce HSs by making four full-thickness skin defect wounds with a diameter of 1 cm on the ventral surface of left ear of each rabbit. Wound epithelization and local-tissue proliferation were observed, and wound healing (complete epithelization) time and formation time of HS were recorded. The 24 rabbits were divided into SVF group, pure DMEM group, and pure HS group according to the random number table, with 8 rabbits and 32 wounds in each group. On post injury day (PID) 25 (after the complete epithelization of wounds), 0.2 mL of low glucose DMEM medium containing CM-Dil labeled autologous SVF was injected into HSs of rabbits in SVF group, while the same amount of low glucose DMEM medium was injected into HSs of rabbits in pure DMEM group. The frequency of injection was once every 5 days, totally for 3 times. HSs of rabbits in pure HS group did not receive any treatment. On PID 40, HSs of rabbits′ ears in each group were harvested, then the histological form was observed by hematoxylin and eosin staining, the arrangement of collagen in HS was observed by Van Gieson staining, the distribution of CM-Dil-labeled SVF in the HS was observed with fluorescence microscope, and the mRNA expression and the protein expression of transforming growth factor β₁ (TGF-β₁), Smad3, and Smad7 in HS were determined by real-time fluorescent quantitative reverse transcription-polymerase chain reaction and Western blotting, respectively. Data were processed with one-way analysis of variance and Tukey test. Results: (1) Complete epithelization time of wounds of rabbits′ ears was (20.0±2.0) d post injury, and HSs were formed on PID 25. On PID 40, HSs of rabbits′ ears in pure DMEM group and pure HS group were still in hyperplasia, while those in SVF group became smaller, flat, soft, and light colored. (2) On PID 40, compared with those in pure DMEM group and pure HS group, the number of epithelium foot like structures was more and the amount of inflammatory cells was less. The collagen of HSs of rabbits′ ears in SVF group was arranged more regularly with broader gap between collagens. (3) On PID 40, CM-Dil-labeled SVF could still be observed in the HSs of rabbits′ ears in SVF group. (4) On PID 40, compared with those in pure DMEM group and pure HS group, the mRNA expressions of TGF-β₁ and Smad3 in the HSs of rabbits′ ears in SVF group were significantly down-regulated (P<0.05), while the mRNA expression of Smad7 was significantly up-regulated (P<0.05). There were no significant differences in the mRNA expressions of TGF-β₁, Smad3, and Smad7 in the HSs of rabbits′ ears between pure DMEM group and pure HS group (P>0.05). (5) On PID 40, compared with those in pure DMEM group (0.74±0.03, 0.73±0.10, 0.54±0.09) and pure HS group (0.72±0.08, 0.71±0.12, 0.53±0.06), the protein expressions of TGF-β₁ and Smad3 in the HSs of rabbits′ ears in SVF group (0.57±0.06, 0.42±0.09) were significantly down-regulated (P<0.05), while the protein expression of Smad7 (0.71±0.05) was significantly up-regulated (P<0.05). The protein expressions of TGF-β₁, Smad3, and Smad7 in the HSs of rabbits′ ears in pure DMEM group and pure HS group were close (P>0.05). Conclusions Autologous SVF transplantation can inhibit the formation of HS in the early stage of scar formation of rabbit, the mechanism may be related to the TGF-β₁/Smad signaling pathway.