This study examined the correlation between osteoporosis and the degeneration of intervertebral discs. Sprague-Dawley rats were maintained up to 22 or 28 months. The femoral bone, tibial bone and lumbar vertebra were histologically studied and the expression of collagen type II and X in intervertebral discs was immunohistochemiscally determined. Several indices for the degeneration of intervertebral discs and osteoporosis and the correlation among them were then analyzed. Close correlations were found among the indices for the degeneration of intervertebral discs, including the relative area of the vascular bud, the ratio of the uncalcified and the calcified layers, the expression of collagen type II and X. The correlation with collagen type X was negative. There existed positive correlations among the indices for osteoporosis, including the thickness ratio of cortical bone, the relative area of bone trabecula, the density of femoral and vertebral body bones, and the maximum stress and strain on bone. Analysis on the relationship of osteoporosis and the disease on disc showed that the indices of osteoporosis were negatively correlated with the indices of the degeneration of intervertebral discs but the expression of collagen type X was positively correlated, with the density of vertebral body bones having the strongest dependence on collagen type X. The maximum stress and strain bore no correlation with the degeneration of intervertebral discs. These results suggest that osteoporosis was negatively correlated with the degeneration of intervertebral discs.

OBJECTIVE:To systematically review the efficacy and safety of Magnesium isoglycyrrhizinate injection versus 4 comnon medicines in the treatment of drug-induced liver damage,and to provide evidence-based reference for clinic treatment. METHODS:Retrieved from PubMed,EMBase,Cochrane Library,CBM,CJFD,Wanfang Database and VIP Database,random-ized controlled trials (RCT) about Magnesium isoglycyrrhizinate injection versus other medicines in the treatment of drug-induced liver damage were enrolled. Meta-analysis was performed by using Rev Man 5.3 software after literature selection,data extract and quality assessment. RESULTS:A total of 13 RCTs were included,involving 1 093 patients. Results of Meta-analysis showed clini-cal effective in magnesium isoglycyrrhizinate group was significantly higher than tiopronin group[RD=0.29,95%CI(0.17,0.42), P<0.001] and diammonium glycyrrhizinate group [RD=0.07,95%CI(0.01,0.12),P=0.02],compared with glutathione group and compound ammonium glycyrrhetate group,there were no significant differences ;incidence of adverse reactions in magnesium iso-glycyrrhizinate group was significantly lower than diammonium glycyrrhizinate group [RD=-0.07,95%CI(-0.11,-0.03),P<0.001] and compound ammonium glycyrrhetate group[RD=-0.21,95%CI(-0.38,-0.04),P=0.02],compared with triopro-nin group and glutathione group,there were no significant differences among 3 groups. CONCLUSIONS:Magnesium isoglycyrrhiz-inate injection has better efficacy and safety than other 4 commons hepatoprotective medicines in the treatment of drug-induced liver damage. Due to the limit of methodological quality,more large-scale and long-term follow-up studies with strict designed are need-ed for the further verification of the conclusion.

Objective: To observe the clinical effect of FU's subcutaneous needling on acute lumbar sprain. Method: One hundred acute lumbar sprain cases were randomly allocated into a treatment group and control group, 50 cases in each. FU's subcutaneous needling on tenderness were employed in the treatment group, whereas voltaren was administered to the cases in the control group. The changes in symptoms and signs were then observed in the two groups. Results: The total effective rates in the treatment group and control group were 94.0% and 70.0% respectively, showing a statistical difference (P<0.01). Conclusion: FU's subcutaneous needling is better than voltaren for acute lumbar sprain.

Objective To explore the double blood vessels bridge application and efficacy in multiple localized narrow of the anterior descending coronary artery.Methods The clinical data of 106 patients with multiple localized narrow of the anterior descending coronary artery were retrospectively analyzed.The patients were divided into two groups according to the operation methods.Fifty-six patients (improvement group) were conducted double blood vessels bridge on the anterior descending coronary artery,50 patients (control group) were conducted a single blood vessel bridge on the anterior descending coronary artery.Results The age,sex,body mass index,left ventricular ejection fraction,extracorporeal circulation time,endotracheal intubation time,length of hospital stay between two groups had no significant difference (P ＞ 0.05).One case in improvement group occurred angina pectoris,left ventricular size was (51 ± 6) mm,left ventricular ejection fraction was (60.8 ± 8.0)％.Nine cases in control group occurred angina pectoris,left ventricular size was(43 ± 6) mm,left ventricular ejection fraction was(55.1 ± 10.0)％.There was significant difference between two groups(P ＜ 0.05).Conclusion Double blood vessels bridge is safe and effective in multiple localized narrow of the anterior descending coronary artery.

ObjectiveTo investigate the effects of short-term enriched environment on the hippocampal formation and the myelinated fibers in the hippocampal formation of mid-aged female rats. Methods Twenty 14-month female SD rats were randomly divided into 10 enriched environment (EE) rats and 10 standard environment (SE) rats. EE rats were reared in enriched environment and SE rats were reared in standard environment for 4 months. Then, five rats were randomly selected from each group. The spatial learning capacity was assessed with Morris water maze. The hippocampal formation and the myelinated fibers in the rat hippocampal formation were quantitatively investigated with transmission electronic microscopy technique and stereological methods. Results Short-term enriched environment enhanced the spatial learning capacity of the mid-aged female rats. The total length and total volume of the myelinated fibers in the hippocampal formation of the EE rats was significantly increased by 43.3% and 47.4%, respectively, when compared to the SE rats. There was no significant difference in the hippocampal volume and the mean diameter of the myelinated fibers in the hippocampal formation between two groups. The increase of the total length of the myelinated nerve fibers in the hippocampal formation was mainly due to the increase of the myelinated fibers with small diameter. Conclusion Short-term enriched environment had significant effects on the spatial learning capacity and the myelinated fibers in the hippocampal formation of middle-aged female rats.

ObjectiveTo investigate the effects of short-term enriched environment on the hippocampal formation and the myelinated fibers in the hippocampal formation of mid-aged male rats. MethodsTwenty 14-month old male SD rats were randomly divided into enriched group and standard group. Enriched rats were reared in enriched environment and standard rats were reared in standard environment for 4 months. Then, the spatial learning capacity of enriched rats and standard rats was tested with the Morris water maze. After the Morris water maze test, the total volume of the hippocampal formation and the myelinated nerve fibers in the hippocampal formation were quantitatively estimated with transmission electronic microscopy technique and stereological methods. Results There was not significant difference in the spatial learning capacity between enriched group and standard group. The total volume of the hippocampal formation of enriched rats was not significantly increased by 4.6% when compared with that of standard rats. The total volume, total length and mean diameter of the myelinated nerve fibers in the hippocampal formation of enriched rats were significantly increased when compared with those of standard rats. Conclusions Four-months enriched environment significantly affected the myelinated fibers in the hippocampal formation of mid-aged male SD rats. The present results might provide an important theoretical basis for searching the ethology strategy to delay the progress of brain aging in the future.

ObjectiveTo investigate the effects of exercise on the hippocampal formation and the myelinated nerve fibers in the hippocampal formation of middle-aged rats. MethodsTen 14-month female SD rats were randomly divided into exercise group and sedentary group.Rats in the exercise group were forced to run on a treadmill for 4 months. After 4 months, spatial learning capacity of two group rats was tested using the Morris water maze.Then, the hippocampal formation and the myelinated nerve fibers in the hippocampal formation were quantitatively estimated using transmission electronic microscopy and stereological techniques. Results Treadmill running enhanced the spatial learning capacity of the rats. The volume of hippocampal formation and the total length of the myelinated nerve fibers in the hippocampal formation were significantly increased after 4 months exercise.However,there was no significant difference in the total volume of the myelinated fibers in the hippocampal formation between the two groups.The absolute distributions of the total length of the myelinated fibers in the hippocampal formation of two groups indicated that the exercise-induced increase of the total length of the myelinated nerve fibers in the hippocampal formation was mainly due to the increase of the myelinated fibers with small diameter. Conclusions Four months running exercise remarkably influence the spatial learning capacity,hippocampal formation and the myelinated fibers in the hippocampal formation of the middle-aged famale SD rats. The present results reveal a potential mechanism for the fact that exercise might improve brain function.

This study examined the correlation between osteoporosis and the degeneration of intervertebral discs.Sprague-Dawley rats were maintained up to 22 or 28 months.The femoral bone,tibial bone and lumbar vertebra were histologically studied and the expression of collagen type Ⅱ and X in intervertebral discs was immunohistochemiscally determined.Several indices for the degeneration of intervertebral discs and osteoporosis and the correlation among them were then analyzed.Close correlations were found among the indices for the degeneration of intervertebral discs,including the relative area of the vascular bud,the ratio of the uncalcified and the calcified layers,the expression of collagen type Ⅱ and X.The correlation with collagen type X was negative.There existed positive correlations among the indices for osteoporosis,including the thickness ratio of cortical bone,the relative area of bone trabecula,the density of femoral and vertebral body bones,and the maximum stress and strain on bone.Analysis on the relationship of osteoporosis and the disease on disc showed that the indices of osteoporosis were negatively correlated with the indices of the degeneration of intervertebral discs but the expression of collagen type X was positively correlated,with the density of vertebral body bones having the strongest dependence on collagen type X.The maximum stress and strain bore no correlation with the degeneration of intervertebral discs.These results suggest that osteoporosis was negatively correlated with the degeneration of intervertebral discs.

Objective To investigate the factors associated with the success rate of external cephalic version (ECV) for singleton and non-cephalic presentation pregnancies in the third trimester.Methods A retrospective study of ECV among singleton and non-cephalic presentation pregnant women in 36-40 weeks of gestation at Maternal and Child Health Hospital of Guangxi Zhuang Autonomous Region from January 2016 to June 2018 was analyzed.Results (1) Totally,251 cases of 358 pregnant women who underwent ECV were successful,with a total success rate of 70.1％ (251/358).The success rate of multipara was 79.1％ (129/163),while 62.6％ (122/195) in primipara (P＜0.01).The total vaginal delivery rate was 52.2％ (187/358),the vaginal delivery rate of multipara was 61.3％ (100/163),while 44.6％ (87/195) in primipara (P＜0.01).(2) Spontaneous reversion occurred in 7.6％(19/251) of ECV successful women,the rate of reversion of multipara was 10.9％ (14/129),higher than that of the primipara [4.1％ (5/122);P＜0.01].(3) Among the 232 pregnant women who did not reverted after successful ECV,187 cases of successful vaginal delivery,the vaginal delivery rate was 80.6％ (187/232);the vaginal delivery rate of the multipara was 87.0％(100/115),which was higher than that of the primipara [74.4％(87/117);P＜0.01].(4) The variables significantly associated with ECV success were parity,type of breech,whether fetal presentation was in pelvic or not (all P＜0.05).The complication rate was 2.2％ (8/358),among which the incidence of fetal distress,placental abruption and transient fetal heart abnormalities were 0.6％ (2/358),0.3％ (1/358) and 1.4％ (5/358) respectively.Conclusion By close monitoring,ECV is a safe and effective procedure in selected appropriate cases,and worthy of clinical application.

Objective To quantitatively study the pressure of residual lateral displacement in distal radius AO C3.1 fracture after manual reduction corrected by dynamic airbag pad using finite element analysis and to verify its effectiveness for correcting the residual displacement of fractures. Methods Imageware 13.0, Mimics 15.0 and ANSYS Workbench were used to simulate 1 cm residual lateral displacement after manual reduction of distal radius fracture corrected by dynamic airbag pad. Then the correlation between the distance of residual lateral displacement and the adjustment of dynamic airbag pad pressure were quantitatively analyzed. Results In the case of constant load restrained by airbag ribbon, during the process of pressure adjustment by splint pad, the stress was mainly distributed in the fracture end where the airbag pad was located. About 2.4 kPa pressure was needed to correct 1 mm displacement on radial side, while about 1.3 kPa pressure was needed to correct 1 mm displacement on dorsal side. The dynamic airbag pad was depressurized after the restoration of residual shift. At this time, displacement could be effectively prevented due to the constant load of airbag ribbon and the frictional load at the fracture end. Conclusions In the case of constant load constrained by airbag ribbon, intelligent airbag splint can effectively correct the residual lateral displacement after the manual reduction of the distal radius AO C3.1 fracture and prevent it from being displaced by adjusting pressure of the dynamic airbag pad.