1.Effect of histone acetylation and deacetylation on bronchial asthma
International Journal of Pediatrics 2010;37(4):384-387
The modification of histone is an important mechanism of epigenetics,furthermore histone acetylation and deacetylation is one of the key modifications of histone.There are enhanced expression of histone acetylation and reduced expression and activity of histone deacetylases in asthma,which lead to the unbalance.Glucocoticoids modulate the inflammation of airway in asthma through restoring the balance of the two kinds of enzymes.Theophylline can restore the activity of histone deacetylation in steroid-resistant athma,thereby restoring corticosteroid function.It maybe a new way to find selective histone acetyltransferase inhibitors to therapy asthma.
2.The effect of Tirofiban on the expression of sCD40L and matrix metalloproteinase-9 in patients with ACS after PCI
Lifeng ZHANG ; Mixin SUN ; Junfang ZHANG ; Guidong WANG ; Sumei LIU
Clinical Medicine of China 2012;28(2):179-181
Objective To investigate the effects of Tirofiban on the expression of matrix metalloproteinase(MMP-9)and sCD40L in patients with acute coronary syndrome(ACS)after percutaneous coronary intervention(PCI)and to explore the potential mechanism of anti-artherosclerosis and stabilize plaque by Tirofiban.Methods Eighty-six patients with ACS were enrolled and were randomly divided into the control group and the Tirofiban group with different time periods after PCI.The expression of MMP-9 and sCD40L were tested by ELISA at 6 h,12 h,24 h,36 h after PCI.Results After application of Tirofiban 6 h,12 h,24 h,36 h,the expression of MMP-9 decreased from(228.25 ±0.015)ug/L to(53.56 ±0.02)μg/L and the expression of sCD40L decreased from(321.12 ±0.02)ng/L to(123.32 ±0.02)ng/L,compared with the control group,the difference was significant(P < 0.05).Conclusions Tirofiban can inhibite the expression of sCD40L and MMP-9,the inhibition of the expression of MMP-9 may be related to the CD40/CD40L pathway.This effect may be one of the mechanism of reducing atherosclerotic plaque inflammation and preventing plaque rupture by Tirofiban.
3.Effects of promoter region 5′CpG island demethylation on biological phenotype in human colorectal cancer cells
Xiaoming FANG ; Shu ZHENG ; Gongxing CHEN ; Lifeng SUN ; Qinghua L
Chinese Journal of Pathophysiology 1989;0(06):-
AIM: To explore the relationship between methylation status of promoter region 5′CpG island and the biological phenotype in human colorectal cancer RKO cell lines. METHODS: RKO cells were treated with selective DNA methyltransferase (DNMTs) inhibitor, 5-Aza-2′-deoxycytidine (5-Aza-CdR), for 72 h. Methylation-specific PCR (MSP), T-A clone and DNA sequence analysis were used to detect 5′CpG island methylation status of p16/CDKN2 tumor suppresor gene. Cell growth, cell cycle arrest and apoptosis were analyzed by MTT, flow cytometry (FCM), fluorescent dye staining and transmission electron microscope. RESULTS: DNMTs inhibitor (5-Aza-CdR) effectively reversed the hypermethylation status of 5′CpG island. The effects of 5-Aza-CdR on cell growth inhibition (P
4.Surgical treatment of thoracolumbar fractures by using the posterior short segment pedicle screw fixation
Lifeng HU ; Zhicheng ZHANG ; Xiaokai WANG ; Tiansheng SUN
Clinical Medicine of China 2012;28(4):406-408
Objective To evaluate the efficacy,indications and clinical outcomes of the treatment of thoracolumbar fractures by short segmental pedicle screws fixation at the level of the fracture.Methods Thirtytwo patients with thoracolumbar fracture,who underwent surgical procedure of short segmental pedicle screws fixation at the level of the fracture from 2007 to 2010,were followed up.X rays were performed preoperatively and postoperatively to locate the injured vertebral segment height and fractured kyphosis vertebral (Cobb angle).Frankel standard was used to assess the spinal cord function.Results All patients were followed up for 12 to 20 months and were in satisfying condition in the reduction of fracture.After surgery,the height of fractured vertebral body leading edge recovered from preoperative (32.4% ~69.3%,averaged (51.6 ± 17.8)% ) to (85.6% ~99.2%,averaged (92.8 ±6.2)% ) after two weeks and (90.6% ~97.8%,averaged (93.8 ±3.6)% ) at the last follow-up.Fractured vertebral Cobb angle was recovered from the preoperative ( 12.8 ° ~ 30.5 °,averaged [20.8±9.1] °) to (0° ~7.8 °,averaged [4.9 ±3.2] °) two weeks later and (2.0° ~ 12.0°,averaged [ 6.2 ± 4.6 ] o at the last follow-up.Cobb angle of the injured vertebral segment and the extend of vertebral compression were significantly improved after the angle was corrected ( P <0.01 ).Conclusion Using reduction and short segment pedicle screw fixation at the fracture level would be helpful to correct kyphotic vertebral compression and restore the height of injured vertebrate,which was also of benefit to increase the stability of short-segment posterior fixation system and reduce the loss of correction in a long run.
5.KY-ⅡACUTE CEREBRAL APOPLEXY DIAGNOSTIC INSTRUMENT
Donghe SUN ; Ruixian YU ; Lifeng WANG ; Weicheng HUANG ; Xiangjian LIU ;
Chinese Medical Equipment Journal 1989;0(04):-
The report introduces a microcomputer controlled instrument which can be used to identify and diagnose acute cerebral apoplexy.The methods of statistics and probability theory are adopted by the instrument to select “body omen” and compute “value”.Z80A is used as the central processing unit and the external device is processed as an internal storage by using linear encodige.The instrurrent uses ZSOA assembly language to make software.
6.Orthogonal design method to optimize rehabilitation prescription of pulsed electric field at Jiaji (EX-B 2) points for spinal cord injury.
Lifeng ZHANG ; Hui ZHANG ; Lin WANG ; Yanyan LIU ; Xianyue SUN ; Lingyan LI ; Jing HOU
Chinese Acupuncture & Moxibustion 2015;35(1):11-15
OBJECTIVEBy using orthogonal design method to optimnize prescription of pulsed electric field at Jiaji (EX- B 2) points for spinal cord injury (SCI).
METHODSFifty six patients of SCI were selected, in which 36 cases were divided into orthogonal design trial and 20 cases were into clinical verification. With 36 patients who received orthogonal design trial, Frankel grading scale was used as observation index to screen optimal prescription of pulsed electric field. Pulse frequency (factor A) included low frequency (factor A(I), 10(2) Hz). moderate frequency (factor A(II), 10(4) Hz) and high frequency (factor A(III), 10(3) Hz); pulse amplitude (factor B) included 0-30 V (factor B ), 0-60 V (factor B(II)) and 0-90 V (factor B(III)); pulse width (factor C) included 0.1 ms (factor C(I)). 0.6 ms (factor C(II)) and 0.9 ms (factor C(III)); acupuncture time (factor D) included one month (DI), three months (D(II)) and five months (D(III)). Twenty patients were used for clinical efficacy observation and the effects of screened optimal pre scription of pulsed electric field at Jiaji (EX-B 2) points combined with regular rehabilitation training on spasm se- verity, score of sensory and motor functions, Barthel index and Frankel score were observed.
RESULTS(1) As results of orthogonal design trial, the optimal prescription was A(III) B(III), C(I), D(III), which were high frequency (10(3) Hz), 0-90 V of pulse amplitude, 0.4 ms of pulse width and 5 months of treatment time. (2) As results of 20 patient clinical verification, Ashworth score, tendon reflex and clonus were all significantly improved (P<0.001, P<0.01), the scores of sensory and motor functions were evidently improvedtl (P<0.001, P<0.05), and Barthel in dex and Frankel score were also enhanced (P<0.001, P<0.05).
CONCLUSIONThe optimal prescription of pulsed electric field at Jiaji (EX-B 2) points for spinal cord injury is high frequency (10& Hz), 0-90 V of pulse amplitude, 0.4 ms of pulse width and 5 months of treatment time. The optimal prescription of pulsed electric field at Jiaji (EX-B 2) points combined with regular rehabilitation could obviously improve spasm severity, enhance senso- ry and motor functions, and ameliorate activity of daily life and Frankel score.
Acupuncture Points ; Adult ; Electroacupuncture ; Female ; Humans ; Male ; Middle Aged ; Spinal Cord Injuries ; rehabilitation ; therapy ; Treatment Outcome
7.Influence factors of blood glucose in patients with hypertension in retired and veteran of military communities in Kunming
Haibing JU ; Jie SONG ; Xiaojuan SUN ; Tao CUI ; Lifeng LI ; Fuxian ZHANG
Clinical Medicine of China 2014;30(11):1159-1162
Objective To evaluate glycemic control,complication and influence factors of glycosylated hemoglobin(HbA1c) in type 2 diabetic(T2DM) patients with hypertension in retired and veteran of military communities in Kunming.Methods Cross-sectional study was conducted and 216 T2DM patients with hypertension were enrolled in current study.A self-made questionnaire was used to collected information including age,course of the disease,complication,hypoglycemic agents and status of glucose controlling.The levels of HbA1 c,fasting blood-glucose (FBG),2h postprandial blood glucose (2hPBG),total cholesterol (TC),triglyceride(TG),high density lipoprotein cholesterol(HDL-C),low density lipoprotein cholesterol (LDL-C),Blood urea nitrogen(BUN),creatinine(Cr) and uric acid(UA) were measured.Relative factors of HbA1c were analyzed.Patients were divided into the standard (HbA1c < 7%) and substandard groups (HbA1c ≥ 7%) according to the level of HbA1c,and divided into the oral-medication,insulin-treatment and oral medication combined insulin groups according to therapeutic regimens.Results The goal attainment rate of HbA1c(HbA1c <7%) in retired and veteran of military communities in Kunming was 44.9% (97/216).The levels of FBG,postprandial plasma glucose(PPBS) and TG in standard group were (6.1 ± 1.2) mmol/L,(9.4 ± 1.8) mmol/L and (1.9 ± 1.3) mmol/L,significant different from those in substandard groups [(7.8 ± 1.6) mmol/L,(11.5 ±2.2) mmol/L and (2.4 ± 1.3) mmol/L],and the differences were significant (t =11.6,9.1,2.2; P < 0.05 or P < 0.01).Meanwhile,the rate of cardiovascular disease,cerebrovascular disease,proteinuria,peripheral neuropathy and retinopathy were 69.8%,34.5 %,20.5%,20.5%,29.6%,respectively,significantly different between the standard and substandard groups (P < 0.05).HbA1 c level was linear correlated with FBG (r =0.76,P < 0.01),PBG (r =0.61,P < 0.01),TG (r =0.24,P < 0.05) and the frequency of glucose monitoring (r =-0.55,P < 0.01).As the increasing of the stage of diabetes,the selected therapeutic regimen were oral anti-diabetic agents,followed by insulin and insulin combined oral antidiabetic agents.The levels of PBG and serum creatinine in patients with insulin monotherapy were higher than those in other groups (P <0.05).Conclusion The level of glucose controlling of retired and veteran of military communities in Kunming is better.The prevalence of diabetic chronic complications is higher in patients with poor glucose controlling.HbA1c level is correlated with FBG,PBG,TG and the frequency of glucose monitoring.Oral antidiabetic agents is the primary therapeutic regimen.
8.Efficacy evaluation of healthy canteen based-nutritional health promotion
Lifeng TAN ; Xiling SUN ; Qiangqiang XU ; Qining ZHANG ; Yundi ZHANG ; Ling TONG ; Chengkai ZHAI
Chinese Journal of Health Management 2014;8(3):184-188
Objective To evaluate efficacy of healthy canteen based-nutritional health promotion so as to provide evidence for popularization and application.Methods A total of 429 college professors and administrative staffs with a healthy canteen were selected as the intervention group in 2012 in Changzhou,and another 947 counterparts without a healthy canteen were selected as the control group.Those of the intervention group was further assigned to the ≥2 times/week and<2 times/week subgroups.Blood pressure,fatty liver,serum triglycerides,blood glucose,total cholesterol,uric acid,low-density lipoprotein cholesterol,high-density lipoprotein cholesterol and body mass index(BMI)were tested before and after the intervention.Results After the intervention,the mean serum glucose[(5.06±0.62)mmol/L],uric acid[(310.57 ± 71.79)μmol/L],total cholesterol[(4.88 ± 0.86)mmol/L],triglycerides[(1.39 ± 0.67)mmol/L]and low-density lipoprotein cholesterol[(2.51 ±0.62)mmol/L]of the intervention group were significantly decreased(t values were 7.513,2.126,2.062,3.731 and 8.891,respectively; all P<0.05),and mean high-density lipoprotein cholesterol[(1.43±0.34)mmol/L]were significantly increased(t=-2.309,P<0.05).After the intervention,mean serum glucose and uric acid of the control group were significantly increased(t values were-3.491 and-7.703,respectively; both P<0.05),although there was no statistically significant difference of mean serum triglycerides,total cholesterol,low-density lipoprotein cholesterol and high-density lipoprotein cholesterol in the control group before and after the intervention(all P>0.05).The abnormality rates of serum glucose,uric acid,total cholesterol,triglycerides,low-density lipoprotein cholesterol and BMI as well as the incidence of hypertension of the intervention group were significantly decreased after the intervention(x2 values were 4.202,3.940,4.031,7.305,59.422,4.273 and 7.385,respectively; P<0.05).In the control group,although the abnormality rate of serum uric acid and the incidence of fatty liver were significantly inclined after the intervention(x2 values were 23.740 and 7.408,respectively; both P<0.05),there were no significant difference of abnormal serum triglycerides,glucose,total cholesterol,low-density lipoprotein cholesterol and BMI as well as the incidence of hypertension before and after the intervention(all P>0.05).Mean serum triglycerides[(1.15 ±0.68)mmol/L]and low-density lipoprotein cholesterol[(2.4 1±0.60)mmol/L]in the ≥2 times/ week subgroup were significantly lower than those of the<2 times/week subgroup(t values were-4.884 and-2.513,respectively; both P<0.05),and mean high-density lipoprotein cholesterol[(1.46±0.33)mmo]/L]of the ≥2 times/week subgroup was significantly higher than that of the<2 times/week subgroup(t=2.032,P<0.05).The abnormality rates of serum total cholesterol,triglyceride and low-density lipoprotein cholesterol in the ≥ 2 times/week subgroup were significantly lower than those in the<2 times/week subgroup(x2 values were 3.963,9.947 and 4.589,respectively; all P<0.05).Conclusion Healthy canteen based-nutritional health promotion model may provide an effective method to prevent and control the development of noncommunicable chronic diseases.
9.Effect of Jiawei-Sini Dection on expression of transforming growth factor-β1 receptor Ⅰ、Ⅱ of hepatic fibrosis in rats
Lifeng WANG ; Shoucai SUN ; Changqin LI ; Hongyong ZHANG ; Xurui ZHENG ; Ning CAO
International Journal of Traditional Chinese Medicine 2011;33(8):686-688
Objective To investigate the role of Jiawei-sini Dection on expression of rat transforming growth factor-β1 receptor Ⅰ,Ⅱ(TβRⅠ,TβR Ⅱ), and study its treatment of anti-HF and the possible mechanisms. Methods The model of rat hepatic fibrosis was setup by subcutaneous injection of carbon tetrachloride and drinking alcohol freely;According to random block method, the successful model rats were divided into three groups:pathological model group (group B),Fufangbiejiarangan tablet group (group C), and Jiawei Sini Decoction group (group D), each group containing ten rats. Group A and group B were given two milliliters saline, group C was given Fufangbiejiarangan tablets 0.625 grams per kilogram of body weight, group D was given Jiawei Sini liquid 15.625 grams per kilogram of body weight.Each rat was fed once a day for 8 weeks.In order to avoid the natural repair of the hepatic affecting the experimental results, the rats,except group A, were still injected 40% CCl4 three milliliters per kilogram of body weight after feeding drug once a week. Fufang-Biejia-Ruangan Ttablet group was set as a positive control;The effects on expression of TβRⅠ,TβR Ⅱ were determined by immunohistochemical method. Changes of alanine aminotransferase (ALT), aspartate aminotransferase(AST),alkaline phosphatase(ALP) and TβRⅠ,TβR Ⅱ were observed in rats. Results The expression of TβRⅠ、Ⅱ, compared with the pathological model(16.63±2.69)%, (14.57±1.09)%, were significantly reduced in Jiawei-Sini Dection group[they are(8.09±0.71)%,(6.51±0.48)%, the difference was statistically significant(P<0.05).The effects of Jiawei-Sini Dection was equal to the effect of Fufang-Biejia-Ruangan Tablets on expression of TβRⅠ,TβR Ⅱ(P>0.05). Conclusion Jiawei-Sini Dection was able to inhibit the expression of TβRⅠ and TβR Ⅱ, thus affected the combination of TGFβ1, and their receptors.
10.The experimental study of effect of JWSNS Serum on proliferation and apoptosis of HSC-T6
Changqin LI ; Jinwen JI ; Xurui ZHENG ; Lifeng WANG ; Shoucai SUN ; Jian SONG ; Xiaoping WANG ; Xinchun XIAO
International Journal of Traditional Chinese Medicine 2012;34(2):130-133
Objective To observe the effect of JWSNS serum on proliferation and apoptosis hepatic stellate cells.Methods After being added different concentrations of JWSNS (the low concentrations of JWSNS:0.78 g/ml of crude drug; the medium concentration group of JWSNS:1.56 g/ml of crude drug; the high concentration group of JWSNS:3.12 g/ml of crude drug) drug-containing serum in vitro HSC-T6 cells for 12h,24 h and 48 h respectively,detected serum HSC-T6 proliferation with MTT colorimetry method and measured HSC-T6 apoptosis with flow cytometry and TUNEL method.Results (①) After applied JWSNS on rats HSC-T6,the Cell proliferation was inhibited which showed a time-concentration dependence.The differences were significant when comparing each JWSNS group with the control group (P<0.01).High concentration of JWSNS group showed significant difference when compared with Biejiaruangan tablets group (P<0.05) with high concentration of JWSNS (0.399± 0.041) % after 48h,and Biejia-Ruangan tablets (0.429± 0.037) % after 48 h.② Flow cytometry analysis showed each JWSNS group and Biejiaruangan tablets group had significant increased cell apoptosis when compared with the control group (P<0.05) after 12 h,24 h,and 48 h.JWSNS medium concentration group [12 h was (17.83±0.25)%,24 h was (26.06±0.26)%,48 h was (39.30±2.25) %] and JWSNS high concentration group [12 h was (27.15±0.29)%,24 h was (38.96±0.51)%,48 h was (49.34± 0.77) %] had a significant increased cell apoptosis compared to the Biejia-Ruangan tablets group [ 12 h was (8.31 ± 0.30) %,24 h was (16.25 ± 0.25) %,48 h was (27.12± 0.39) %].③ TUNEL detection showed that each concentration of JWSNS group [the low concentration of JWSNS:was (25.1 ± 1.48)%,medium concentration group of JWSNS was(39.30±2.25)%,high concentration group of JWSNS was(39.30±2.25)%] had a significant increased cell apoptosis rate than Biejiaruangan tablets group (30.0± 3.92) after 48 h (P<0.01).Conclusion JWSNS containing serum can inhibit the proliferation of HSC-T6 in vitro,promote the apoptosis