Objective:To establish a method of ion chromatography for the determination of sodium, potassium and citric acid in potassium sodium hydrogen citrate granule. Methods:The chromatographic conditions for potassium and sodium were as follows:a Di-onex IonPac CS12A column (250 mm × 4. 6 mm, 5μm), 0. 02 mol·L-1 methane sulfonic acid solution as the mobile phase, the flow rate of 1. 0 ml·min-1 , the suppressor of CSRS 300, the inhibition current of 59 mA, the inhibition type conductivity detector, and the injection volume of 25 μl. The chromatographic conditions for citrate were as follows: a Dionex HPICE-AS1 colunm ( 250 mm × 9. 0 mm,7. 5 μm), 0. 015 mol·L-1sulfuric acid solution as the mobile phase, the flow rate of 0. 6 ml·min-1, the detection wave-length of 220 nm and the injection volume of 10 μl. Results: The linear range of sodium was 0.82-82.49 μg·ml-1(r=0.9999), and the average recovery was 98.9%(RSD =0.55%, n =9). The linear range of potassium was 1.38-137.89 μg·ml-1 (r =1. 0000), and the average recovery was 100. 5% (RSD=0. 53%, n=9). The linear range of citric acid was 0. 021-10. 600 μg· ml-1(r=1. 0000), and the average recovery was 99. 1% (RSD=0. 54%, n=9). Conclusion:The method is simple, rapid and ac-curate, and can be used for the quality control of potassium sodium hydrogen citrate granule.

Objective To explore the thrombomodulin(TM) expreesion levels changes in plasma and placenta in patients with early onset severe preeclampsia. Methods Sixty cases of severe preeclampsia women who delivered in the affiliated Xuzhou Maternity and Child Health Care Hospital of Xuzhou Medical College were enrolled in the study from June 2012 to February 2014, including 30 patients with early onset severe preeclampsia (early onset group), and 30 patients with late onset severe preeclampsia (late onset group). Healthy pregnant women were divided into two control groups according to gestational weeks at delivery: early control group ( n=23, at 28-33+6 weeks), and late control group (n=30, delivered after 34 weeks). ELISA was used to detect the levels of TM in plasma. Immunohistochemistry SP was applied to detect the TM protein expression on placenta. TM mRNA was determined by reverse transcription polymerase chain reaction (RT)-PCR technique. Results (1) TM level in plasma in early onset group and late onset group were (90.8±6.9) and (87.5±7.0)μg/L, and TM level in plasma in early control group and late control group were (37.7 ± 2.3) and (37.7 ± 2.5)μg/L. Plasma TM level in early onset group was higher than that in late onset group, early control group and late control group. The TM level had no statistically significant compare of early-onset group to late onset group.(P>0.05). The plasma TM level in early onset group was significantly higher than that in early control group (P<0.05), and the plasma TM level in late onset group was significantly higher than that in late control group (P<0.05). (2)TM expressed mainly in the membrane and cytoplasm of placental syncytiotrophoblasts and endothelial cells. The expression of TM protein in early onset group was 47%(14/30), significantly lower than that in late onset group, early control group and late control group (P<0.05), in which the positive rate were 90%(27/30), 91%(21/23) and 93%(28/30) respectively (P<0.05).There was no difference between late onset group and late control group (P>0.05). There was no difference between early control group and late control group (P>0.05). (3) TM mRNA expression in early onset group, late onset group, early control group and late control group were 0.14±0.06, 0.89 ± 0.23, 0.88 ± 0.22 and 0.93 ± 0.19, respectively. The expression of TM mRNA in early onset group was significantly lower than that in late onset group, early control group and late control group (P<0.05), and the difference between early control group and late control group was not statistically significant (P>0.05). There was no difference between late onset group and late control group (P>0.05). There was no difference between early control group and late control group (P>0.05). Conclusions Decreased expression of TM in placenta may be associated with the pathogenesis of early onset severe preeclampsia, there may be different pathogenesis in early onset and late onset severe preeclampsia.

BACKGROUND:Few reports are found about the effect of ovariectomized rats' bone histomorphometry parameters using non-destructive dynamic loading system.OBJECTIVE:To observe the effect of different loads situations on the bone histomorphometry parameters in ovariectomized rats.DESIGN,TIME AND SETTING:A controlled observation on the bone histomorphometry was performed in the Biomedical Engineering Laboratory of Jilin University from April 2007 to August 2007.MATERIALS:A total of 35 9-month-old Sprague-Dawley female rats were randomly divided into five groups,including sham operation group,ovariectomized (OVX) control group,OVX loading 1 N group,OVX loading 2 N group,OVX loading 4 N group.There were 7 rats in each group.METHODS:Rats in OVX control group and castration load group were processed into bilateral OVX on the back. The sham operation group only underwent the excision of fat tissues on back,and then sutured. After castration for 1 week,rats were loaded with non-destructive dynamic loading system in the two sides of the tibia,15 minutes a day. The mechanical loads would continue for 4 weeks and the loads were 1N,2N and 4N.MAIN OUTCOME MEASURES:Changes of proximal tibia bone histomorphometry parameters.RESULTS:The area,number and thickness of trabecular bone in OVX loading group were all higher than OVX control group (P＜0.05,P＜0.01).The trabecular bone area and thickness in OVX 4 N and OVX 2 N groups were significantly higher than OVX control group (P ＜ 0.001).There was a downward trend of trabecular separation in OVX 4 N group compared with OVX control group (P ＜ 0.05). With the increasing loads,there was an increasing trend of the area,number and thickness of trabecular bone,which were close to sham-operated group. The trabecular separation was declined. Single fluorescent labeled surface and double fluorescent labeled surfaces in sham operated group were all lower than that in OVX control group. With the increase in loads,the single fluorescent labeled surface,double fluorescent labeled surface,interlabeled width and mineral apposition rate had been shown to increase. The OVX 2 N and OVX 4 N groups exhibited a remarkably higher level of mineral apposition rate than OVX control group (P ＜ 0.05).CONCLUSION:With the increase in load at the range of 1-4 N,all parameters of bone histomorphometry improve in the OVX rats,the bone microstrcture is greatly ameliorated,bone mass loss is reduced and the process of osteoporosis is delayed.

BACKGROUND:Removing the posterior ligamentous complexes during posterior lumbar interbody fusion (PLIF) may influence motion and load bearing characteristics of the adjacent segments,contributing to the postoperative instability at the adjacent segment,which is one of the important factors for adjacent segment degeneration.OBJECTIVE:To evaluate the clinical effectiveness of the PLIF plus screw implantation preserving posterior ligamentous complexes under microscope.METHODS:Thirty-six patients with single-level lumbar degenerative disease were enrolled,which were allotted to experimental (n=17) and control (n=1 9) groups,followed by treated with PLIF plus screw implantation preserving posterior ligamentous complexes,and traditional PLIF plus screw implnatation,respectively.The Visual Analogue Scale scores and Oswestry Dysfunction Index at baseline and postoperative 3 months were assessed.The adjacent segment degeneration was observed through radiology during follow-up.RESULTS AND CONCLUSION:The Visual Analogue Scale and Oswestry Dysfunction Index scores in the two groups were significantly lower than those before treatment (P ＜ 0.01),and the postoperative scores in the experimental group were significantly lower than those in the control group (P ＜ 0.01).The adjacent segment degeneration occurred in two cases in the experimental group and 8 cases in the control group during follow-up.Radiology revealed that the internal fixative was stable,none of screw loosening,rupture or pullout.These results suggest that PLIF plus screw implantation with posterior ligamentous complexes can effectively relieve the pain and dysfunction in the lumbar degenerative patients,and reduce the incidence of adjacent segment degeneration.

Objective To study effect of piracetam combine with hyperbaric oxygen in treatment of acute carbon monoxide poisoning patients with electrocardiogram and its effects on Lactate clearance.Methods 60 patients of acute carbon monoxide poisoning who received therapy from February 2011 to February 2016 in our hospital were selected as research objects.All accord with the diagnostic criteria of acute carbon monoxide poisoning.According to draw method,those patients were divided into the experimental group(n=30)and the control group(n=30).The two groups were given a large number of sustained oxygen,intracranial pressure,protect brain cells,promote blood circulation and improve microcirculation and other basic symptomatic treatment.The control group on the basis,was treated with hyperbaric oxygen,one times a day,a total of ten times.while the experimental group was treated with piracetam combine with hyperbaric oxygen,hyperbaric oxygen method with the control group,intravenous drip of Piracetam and Sodium Chloride Injection,each 100ml,two times a day,a total of treatment for ten days.Then abnormal ECG,creatine kinase isoenzymes(CK-MB),troponin(cTnl),lactate clearance,incidence of delayed encephalopathy,mortality,therapeutic effect of two groups were compared.Results ECG abnormal rate there was no difference between the two groups before treatment,after treatment,the abnormal rate of the experimental group was significantly lower than the control group [6.66(2/30)vs.33.33％(10/30)](P<0.05); CK-MB、cTnl、6h and 24h after treatment,Lactate clearance rate was significantly higher than control group[(15.80±2.03)％vs.(10.26±2.01)％,(20.75±3.12)％vs.(13.07±2.56)％](P<0.05);DEACMP rate and mortality was significantly lower than the control group[6.66％(2/30)vs.33.33％(10/30),3.33％(1/30)vs.30.00％(9/30)](P<0.05); The total effective rate was significantly higher than the control group[95.56％(28/30)vs.75.56％(22/30)](P<0.05).Conclusion Piracetam combine with hyperbaric oxygen is well for acute carbon monoxide poisoning,which can improve the clearance rate of lactic acid,improve hypoxia and myocardial injury,and reduce the abnormal ecg.

Objective To investigate the effect of acupuncture at point Neiguan on mouse myocardial hypertrophy.Methods Thirty-sixty healthy C57BL6 mice were randomized into blank, model and treatment groups, 12 rats each. In the treatment group, an acupuncture needle was inserted into point Neiguan and retained for 15 min, once daily. After nine days of treatment, the ratios of cardiac weight/tibial length were compared between the groups. Left ventricular myocardial tissues were processed by Masson trichrome staining in every group of mice. The differences in myocardial fiber arrangement and collagen fiber distribution between the groups were observed under the ordinary optical microscope in 100 times of field of vision. Sarcomere structure, myofibril arrangement, collagen fibers and mitochondria in injured myocardial tissues were observed by transmission electron microscopy. Results Heart rate increased significantly in the model group and decreased significantly in the acupuncture group compared with the blank group. Cardiac weight and the ratios of cardiac weight/tibial length increased significantly in the model and acupuncture groups compared with the blank group (P<0.01) and decreased significantly in the acupuncture group compared with the model group (P<0.01). In the model group, myocardial tissues had compensatory hypertrophy with incontinuous status, and myocardial transverse striations had severe disorder/disruption, karyopyknosis appeared and cytoplasmic eosinophilic change became obvious in few of the rats. The results were better in the acupuncture group than in the model group. In the model group, part of myofibrils had focal fusion, interstitial collagen fibers proliferated and mitochondria had swelling and compensatory increase. The results were also better in the acupuncture group than in the model group.Conclusions Acupuncture at point Neiguan can reduce the production of collagen fibers and mitochondria, improve the arrangement of sarcomere structure and delay the progression of myocardial hypertrophy.

Objective To observe changes of cognitive function and the expression of tumor necrosis factor alpha(TNF-α),interleukin 10(IL-10) in hippocampus of diabetic rats,and assess the role of inflammation in the possible pathogenesis of diabetic encephalopathy (DE).Methods 30 male SD rats were randomly divided into control group and diabetes mellitus group.After 4 weeks of feeding high fat diet,diabetes mellitus group according to 30mg/kg injected with streptozotocin to establish type 2 diabetic rat model.At the end of the experiment,cognition were evaluated using water maze test.The concentration of beta-amyloid(Aβ) in hippocampus of diabetic rats were detected through enzyme linked immunosorbent assay,and the expression of TNF-α,IL-10 were detected by Western blotting.The expression of Aβ,TNF-α,IL-10 were observed through immunohistochemistry.Results Time spent in the target quadrant in diabetes mellitus group was shorter than that in control group ((38.21± 3.68)s vs (42.10±2.62)s,t=3.105,P＜0.01).The frequency of crossing original platform site was less than that in control group((2.62±0.77) vs(3.69±0.95),t=3.184,P＜0.01).Compared with control group the expression of Aβ,TNF-α were higher(BothP＜0.01),and IL-10 were lower(P＜0.01)in diabetes mellitus group.The positive expression of Aβ,TNF-α were obviously and IL-10 were less obviously observed in diabetes mellitus group according to immunohistochemistry.Conclusion The cognitive decline in diabetic rats is possibly related to inflammatory cytokines expressing out of balance.

Raising training quality is the core of the education of graduate students.In recent years,graduate students have expanded to recruit and make the education of graduate students faced with many problems,which challenges the graduate students' training quality.As the recruitment scale expanded year after year,colleges have to assume the specific management task in the university.The angle that we manage from institute is discussed according to the major link in the training of graduate student for how to ensure the training quality of graduate students.

Adult ; B-Lymphocytes ; pathology ; Female ; Humans ; Lymphoma, B-Cell ; pathology ; Stomach Neoplasms ; pathology

Objective To evaluate the clinical value of ultrasonography detecting the poster urethrovesical angle(PUVA) in diagnosis of stress urinary incontinence(SUI).Methods From Jan.2006 to Dec.2008,the PUVA in resting phase (PUVA-r) and stress phase( PUVA-s) between with SUI and 100 healthy women were measured by color Doppler ultrasound,including 57 cases in SUI degree Ⅰ,22 cases in SUI degree Ⅱ,5 cases in SUI degree Ⅲ.Results (1) The PUVA-r and PUVA-s were (130±29) and (158±36)in SUI patients,which were significantly higher (113±19)and (115±23)in control group (P<0.01).(2) Correlation analysis showed that PUVA-s was positively correlated with the severity of SUI ( P < 0.01).(3) The area under the receiver operating characteristic curves (ROC) of PUVA-s was 0.82 (95% CI:0.76-0.89) between SUI patients and healthy women.When PUVA-s ≥ 140 ° was chosed as the cut-off value,the specificity,accuracy rate and positive predictive value in diagnosis of SUI were 84%,79%,81%,which were significantly higher than those when cut-off value of PUVA-s ≥ 120(54%,68%,62%; P < 0.05 ).Conclusion The PUVA-s in SUI patients are significantly increased and is positively correlated with the severity of SUI,which are indicated that PUVA-s ≥ 140should be used as cut-off value in diagnosis of SUI by ultrasonography.