0.05);the TAV of the drug plus radiation dose of 20,25Gy groups were much smaller than that of the radiation alone groups (P

Objective To investigate the effect of periplocin of cortex periplocae (CPP) on Stat3 signaling and its probable molecular mechanism of inducing apoptosis and anti-tumor activity. Methods Cell proliferation was detected by MTT. Cell apoptosis and cell cycle were investigated by flow cytometry. Expression of Stat3 protein in SMMC-7721 cells was analyzed by Western blot. Mcl-1, Survivin and XIAP mRNA expressions were measured by RT-PCR. Results CPP inhibited the proliferation of SMMC-7721 cells significantly, induced their apoptosis and arrested their cell cycle at G2/M phase. Decreased expression of Stat3 protein in the cell nucleus was observed after CPP treatment, but no significant changes were found in cytoplasma. Mcl-1, Survivin and XIAP mRNA expression levels were decreased in a time-dependent manner. Conclusion CPP inhibits cell proliferation and induces apoptosis by inhibiting Stat3 signal transduction in human hepatocellular carcinoma cell line SMMC-7721.

Objective To investigate the effects of inhibition of STAT5 gene expression by RNA interference technology on apoptosis of human hepatocellular carcinoma cell line SMMC-7721. Methods Three siRNA eukaryotic expression vectors against STAT5 were constructed and transfected with lipofectamineTM 2000 into SMMC-7721 cells. The changes in STAT5 expression were detected by semi-quantitative RT-PCR and Western blot. Cell apoptosis was assayed by flow cytometry (FCM). Results The sequence-specific siRNA could effectively and specifically inhibit STAT5 gene expression at both mRNA and protein levels. The inhibition rates of STAT5 mRNA expression were 70.43%, 43.02%, and 45.07%, respectively. The inhibition rates of STAT5 protein expression were 67.45%, 37.36%, and 41.86%, respectively. At 48 h after transfection, apoptosis rate was 25.61%. Conclusion siRNA against STAT5 can inhibit STAT5 gene expression in SMMC-7721 cells effectively and specifically and induce apoptosis of SMMC-7721 cells. siRNA targeting STAT5 has a great potential value in gene therapy of hepatocellular carcinoma.

Objective To investigate the different components of Acorus tatarinowii and Polygala tenuifolia(volatile oil, aqueous extract)on the expression of phosphorylated Tau protein at site Ser396 and Tau-5 in the hippocampus of rats with Alzheimer′s disease(AD). Methods Male Sprague Dawley rats were randomly divided into 8 groups:normal control group, model control group,low-,middle-,and high-dose groups of volatile oil of Acorus tatarinowii and Polygala tenuifolia,and low-, middle-,and high-dose groups of aqueous extract of Acorus tatarinowii and Polygala tenuifolia. The subacute aging model was established by intraperitoneal injection of D-galactose( D-gal). Rats were given different components of Acorus tatarinowii and Polygala tenuifolia(crude drug dosage,0.6,1.2,1.8 g·kg-1 )in experimental groups,and 0.9% sodium chloride solution in normal control group and model control group,by gavage for 28 days.The levels of phosphorylated Tau protein at site Ser396 and Tau-5 were detected in hippocampal tissues by Western blotting and immunohistochemistry. Results The levels of phosphorylated Tau protein at site Ser396 were significantly enhanced in the model control group,as compared with those in normal control group (P<0.01).The relative expression levels of Tau protein Ser396 were 3.83±0.10,3.35±0.01,3.11±0.01,2.75±0.03,2.93±0.01,2.55± 0.07,and 2.23±0.08 in model control group,low-,middle-,and high-dose groups of volatile oil of Acorus tatarinowii and Polygala tenuifolia,and low-,middle-,high-dose groups of aqueous extract of Acorus tatarinowii and Polygala tenuifolia,respectively.Two components of Acorus tatarinowii and Polygala tenuifolia could dephosphorylate Tau protein Ser396 to vary degrees in a dose-dependent manner.The aqueous extract component was slightly better than the volatile oil component,especially in the high-dose group(P<0.01).But Tau-5 did not change significantly after treatment with Acorus tatarinowii and Polygala tenuifolia(P>0.05). Conclusion Acorus tatarinowii and Polygala tenuifolia could promote the dephosphorylation of Ser396 site of Tau protein in the hippocampus of AD rats,with the aqueous extract component having better effects.

Objective To study the effects of different hypertonic saline (4.5%and 7.5%) in fluid resuscitation on hemodynamics in traumatic rabbits with hemorrhagic shock.Methods Thirty-two healthy rabbits ( male or female, 2.0-3.0 kg body weight) were divided into 4 groups randomly:SHAM group, SWT group ( shock without treatment) , 4.5%group (resuscitation with 4.5% hypertonic saline), and 7.5% group ( resuscitation with 7.5% hypertonic saline), 8 rabbits in each group.The rabbit model of uncontrolled hemorrhagic shock was established after anesthesia.The fluid used in the two methods of fluid resuscitation was infused into the rabbits at designed times.The hemodynamic data including the left intraventricular systolic pressure ( LVSP) and maximal change rate of left intraventricular pressure ( ±dp/dtmax) were determined at 0 min, 30 min, 60 min, and 90 min.Results (1) The rabbit models of uncontrolled hemorrhagic shock were generated successfully.At 30 min, data of SWT in the 4.5%and 7.5%groups had no significant difference through pairwise comparison (P>0.05).(2) The hemodynamic parameters changed similarly during the experiment.At 60 min, the values of the 7.5%group ( LVSP=115.00 ±8.37 mmHg, +dp/dtmax=4.29 ±0.50 mmHg/ms, -dp/dtmax=-3.25 ±0.25 mmHg/ms) were significantly higher than those in the 4.5%group ( ( LVSP=104.14 ±7.73 mmHg, +dp/dtmax=3.35 ±0.39 mmHg/ms, -dp/dtmax=-2.27 ±0.12 mmHg/ms) (P<0.05).At 90 min, the data of the 7.5%group were higher, but statistically not significantly different ( P>0.05 ) .Conclusions Fluid resuscitation can improve the hemodynamic function in traumatic rabbits with uncontrolled hemorrhagic shock.Comparing with the 4.5%hypertonic saline, 7.5% hypertonic saline can improve the hemodynamic function more apparently.Our results may provide an experimental support for the treatment of clinical patients with uncontrolled hemorrhagic shock.

Objective:To investigate the effect of intensive hypoglycemic therapy on the frequency of recurrent periodontitis in the patients with type 2 diabetes mellitus. Methods: Totally 40 patients with type 2 diabetes mellitus and recurrent periodontal disease were randomly divided into group A and group B. Group A was treated with the periodontal basic therapy combined with the convention-al hypoglycemic therapy. Group B was treated with the periodontal basic therapy combined with the intensive hypoglycemic therapy. Af-ter 6-month treatment,the change of the probing depth of the periodontal pocket, sulcus bleeding index, incidence frequency, recovery course, body mass index, fasting blood glucose, glycosylated hemoglobin and serum C-reactive protein levels were measured before and after treatment. Results:After the treatment, the indices were improved in group A except body mass index and fasting blood glucose (P<0. 05), and in group B, the indices were improved except body mass index (P<0. 05), and the probing depth of the periodontal pocket, sulcus bleeding index, incidence frequency, body mass index, serum C-reactive protein levels, glycosylated hemoglobin and fasting blood glucose of the patients in group B were all better than those in group A (P<0. 05). Conclusion:Periodontal basic thera-py combined with intensive hypoglycemic therapy can effectively improve the periodontal health of diabetic patients, shorten the recov-ery treatment of periodontal disease, reduce the incidence frequency, and reduce blood glucose as well.

Objective To research the influence kidney-yang deficiency on rat' s gastric antrum and small intestinal mucosa tissue microstructure' s change.Methods The rats were cut off bilateral adrenal three-quarters to establish the model rats with deficiency of kidney-yang,which were randomly divided into a model group and a Shenfu decoction group at 4 weeks after operation.The sham operation group was the same as model group except without cutting rats bilateral adrenal and setting as a control group.The Shenfu decoction group was given suspension liquid of Shenfu decoetion by lavage,and both the control group and model group were given physiological saline of the same capacity for 4 weeks.Each rat gastric antrum and small intestinal mucosa's organization structure by conventional HE slice was observed.Results ① The sham operation group rats' gastric and intestinal mucosa were pink,shiny and elastic by macroscopic observation.Compared with the sham operation group,the gastric and intestinal mucosa of the model group became thinner,dimmer and less elastic.Compared with the model group,the gastric and intestinal mucosa of the Shenfu decoction group were a bit thicker,shinier and more elastic.② The results of the light microscope showed that:The gastric antrum and intestinal mucosa's tissue structure were normal.Compared with the sham operation group,the antrum mucosa tissue's cell gap of the model group became larger,besides the mucous glands had different degrees of alignment disorders,and a large number of vacuolar degeneration Appeared.The intestinal mucosa tissue villus edge was irregular,partial shedding of the epithelium fell offand deleted.Compared with the model group,the antrum mucosa tissue's cell gap of the Shenfu decoction group became smaller,the mucous glands cells arranged more regular,and the vacuolar degeneration had reduced.The intestinal mucosa tissue villus edge was more regular,and intestinal mucosal epithelial tissue was more complete.Conclusion The pathological changes were emerged in kidney-yang deficiency rat models.

Objective To explore the relation of early time secretion function of Beta cell in newly diag-nosed type 2 diabetic patient and the changes of body weight following intensification therapy of insulin. Methods 237 newly diagnosed type 2 diabetic patients were divided into 1 kg lower group, the 1-5 kg group, the 5 kg above group. The maximum body weight and waist circumference were recorded. The present body weight and waist circum-ference were measured according to OGTT study, meanwhile,30 minuets blood sugars, the insulin and the C-peptide (C-P) level and the blood pressure(BP) and the insulin resistance index (HOMA-IR), the early insulin secretion index (△I30/△G30) was calculated. All cases were treated for 14 days. Results Early time secretion function of Beta cell in the group keeping above lose weight 5 kg was the worst, after treatment insulin secretion level were in-creased 1.12 times and 1.86 times in 1 kg lower group than in the 1-5 kg group and above 5 kg group. Conclusions Early time secretion function of Beta cell in newly diagnosed type 2 diabetic patient is correlated with the maxi-mum body weight decrease.

Objective:To study the antidepressant effect of Baihe Zhimu decoction (BZD)and its influence in the key factors (CaM,CaMKⅡ,CREB)of CaM signaling pathway in hippocampus of the rats with depression,and to explore the antidepressant effect of BZD. Methods:Fifty rats were divided into control group,model group, fluoxetine group,low and high doses of BDZ groups (n = 10).Expect for control group,all the rats in other groups were made depression models by means of chronic unpredictable mild stress along with isolated raising,for 21 d.Then the rats were fed with NS, fluoxetine (1.8 mg · kg-1 ), and BZD (1.5 and 3.0 g · kg-1 ), respectively;for 28 d.The learning and memory ability,autonomous activities and the fixed time in 5 min of the rats were tested by Morris water amaze,Open-field Test and Forced Swimming Test respectively. The damage and repair status of hippocampal neurons were observed by Nissl staining method;the expression levels of CaM,CaMKⅡ protein,CREB mRNA in hippocampus of the rats were detected by Western blotting and RT-PCR method. Results:Compared with model group,the total time of rats in the platform quadrant of Morris water maze in BZD groups and fluoxetine group,the total distance and the number of crossing platform were increased (P <0.05 or P <0.01),and the time of first crossing platform were shortened (P <0.01);the total scores in open field test were increased (P <0.01),the fixed time with 5 min in the forced swimming test was shortened (P <0.05 or P <0.01).Compared with fluoxetine group,the fixed time within 5 min of the rats in swimming test was shortened (P <0.05).The result of Nissl staining showed that the hippocampal neuron injury in BZD groups and fluoxetine group was improved compared with model group.The molecular test results showed that the CaM and CaMKⅡprotein expression levels in hippocampus of the rats in BZD groups and fluoxetine group were increased compared with model group (P < 0.05 or P < 0.01).Compared with model group,the CREB mRNA expression levels in fluoxetime group and BZD groups were increased (P < 0.05 or P < 0.01).Conclusion:BZD has antidepressant effect and can improve the hippocampal neuron injury of the rats with depression and its mechanism is related to increasing the expression levels of CaM,CaMKⅡ and CREB in hippocampus CAM signaling pathway of the rats.

Objective:To investigate the correlation between preterm infants with brain injury and the proportion of lymphocyte subsets, especially γδ-T cells in the postnatal peripheral blood, and to determine the predictive potential of γδ-T cells in the early peripheral blood in brain injury.Methods:It was a prospective study involving 106 preterm infants with gestational age less than 34 weeks who were delivered in the Department of Neonatology, the Third Affiliated Hospital of Zhengzhou University from January 1, to June 1, 2021.Relative levels of γδ-T , CD4 + T, CD8 + T, CD3 + T and total lymphocyte subsets in peripheral blood collected within the first 24 hours after birth were measured by flow cytometry.Recruited infants were divided into brain injury group (36 cases) and non-brain injury group (70 cases) according to serial cranial ultrasound and magnetic resonance imaging(MRI) at the corrected gestational age of 36-37 weeks.Differences in general conditions and the proportion of lymphocyte subsets between groups were compared by the t-test or Chi- square test.Patients in brain injury group were further divided into intracranial hemorrhage(ICH) group(8 cases), periventricular leukomalacia (PVL) group (6 cases)and diffuse white matter damage (WMD) group(22 cases). The proportion of lymphocyte subsets among the different groups was compared by One- Way ANOVA, followed by the LSD- t test. Results:The proportion of γδ-T cells in postnatal peripheral blood of preterm infants at 24 hours after birth in brain injury group was significantly lower than that of non-brain injury group [(0.09±0.12)% vs.0.15±0.13)%, t=-2.445, P=0.016]. No significant differences in the proportion of the CD4 + and CD8 + T cell subsets were found between them.Both preterm infants in PVL group and WMD group had a significantly lower proportion of γδ-T cells at 24 hours after birth compared to that of the non-brain injury group [(0.03±0.05)%, (0.07±0.09)% and (0.15±0.13)%], respectively, ( t=-2.190, -2.659, all P<0.05). Conclusions:γδ-T cells in early postnatal peripheral blood may be involved in the development of brain injury in preterm infants and they had early predictive value for preterm infants at high risk of brain injury, especially the leukomalacia and diffuse white matter injury.