Objective To investigate the effect of RNA interference plasmids of cysteine-rich 61(Cyr61) on hyperplasia of vascular smooth muscle cell (VSMC) in rats.Methods The plasmids containing the short hairpin RNA (shRNA) of Cyr61 were constructed.Expression of Cyr61 mRNA and protein were detected by reverse transcription polymerase chain reaction (RT-PCR) and Western blotting.The hyperplasia of VSMC was assessed by MTT.DNA synthesis was measured by incorporating ~3H-TDR.Plasmid construction was confirmed by DNA sequencing.Results PCyr61-shRNA transfection significantly decreased the level of mRNA and protein of Cyr61 in VSMC.The cell number,optical density and concentration of DNA in pCyr61-shRNA group were significant decreased(P

Objective To establish a method for content determination of total flavones and polysaccharides in Hedysari Radix in different producing areas in Gansu Province.Methods The contents of total flavones and polysaccharides in Hedysari Radix in different producing areas in Gansu Province were determined by ultraviolet spectroscopy with calycosin-7-glucoside and glucose as reference substance, and the wavelength was set at 260 nm and 484 nm.Results The contents were from 2.82 mg/g to 6.79 mg/g for total flavones and from 106.14 mg/g to 746.40 mg/g for total polysaccharides in Hedysari Radix in different producing areas in Gansu Province. The recoveries of total flavones and total polysaccharides were 97.96％ and 102.90％, respectively.Conclusion There was difference in contents of total flavones and polysaccharides of Hedysari Radix in different producing areas in Gansu Province, and the method of using ultraviolet spectroscopy is simple, reproducible, accurate and reliable, which can be preferably used as the method for content determination of total flavones and polysaccharides in Hedysari Radix.

Previous studies proposed that the synergistic effect of fibroblast growth factor-21 (FGF-21) and insulin may be due to the improvement of insulin sensitivity by FGF-21. However, there is no experimental evidence to support this. This study was designed to elucidate the mechanism of synergistic effect of FGF-21 and insulin in the regulation of glucose metabolism. The synergistic effect of FGF-21 and insulin on regulating glucose metabolism was demonstrated by investigating the glucose absorption rate by insulin resistance HepG2 cell model and the blood glucose chances in type 2 diabetic db/db mice after treatments with different concentrations of FGF-21 or/and insulin; The synergistic metabolism was revealed through detecting GLUT1 and GLUT4 transcription levels in the liver by real-time PCR method. The experimental results showed that FGF-21 and insulin have a synergistic effect on the regulation of glucose metabolism. The results of real-time PCR showed that the effective dose of FGF-21 could up-regulate the transcription level of GLUT1 in a dose-dependent manner, but had no effect on the transcription level of GLUT4. Insulin (4 u) alone could up-regulate the transcription level of GLUT4, yet had no effect on that of GLUT1. Ineffective dose 0.1 mg kg(-1) FGF-21 alone could not change the transcription level of GLUT1 or GLUT4. However, when the ineffective dose 0.1 mg x kg(-1) FGF-21 was used in combination with insulin (4 u) significantly increased the transcription levels of both GLUT1 and GLUT4, the transcription level of GLUT1 was similar to that treated with 5 time concentration of FGF-21 alone; the transcription level of GLUT4 is higher than that treated with insulin (4 u) alone. In summary, in the presence of FGF-21, insulin increases the sensitivity of FGF-21 through enhancing GLUT1 transcription. Vice versa, FGF-21 increases the sensitivity of insulin by stimulating GLUT4 transcription in the presence of insulin. FGF-21 and insulin exert a synergistic effect on glucose metabolism through mutual sensitization.
Animals ; Blood Glucose ; Diabetes Mellitus, Experimental ; metabolism ; Drug Synergism ; Fibroblast Growth Factors ; pharmacology ; Glucose ; metabolism ; Glucose Transporter Type 1 ; metabolism ; Glucose Transporter Type 4 ; metabolism ; Hep G2 Cells ; Humans ; Insulin ; pharmacology ; Insulin Resistance ; Liver ; metabolism ; Mice

Objective To evaluate the effect of surgical excision of the anterior temporal lobe and hippocampus on the cognitive function of patients with refractory temporal lobe epilepsy. Methods Nineteen patients with refractory temporal epilepsy received surgical excision of the anterior temporal lobe and hippocampus, and cognitive neuropsychologieal assessments were conducted, 3 and 6 months after the surgery, to evaluate the changes in the patinets' cognitive functions. Results Satisfactory effects were achieved in these patients after the operations. One patient showed temporary speech disorder, and two exhibited temporary euphoria. Patients with refractory temporal lobe epilepsy had severe cognitive dysfunctions involving especially in the intelligence, attention and memory, which were not aggravated after the operation, Conversely, the operation resulted in gradual improvement of some of the cognitive functions in these patients. Conclusion Patients with refractory temporal lobe epilepsy have cognitive dysfunction, and surgical excision of the anterior temporal lobe and hippocampus can cure or reduce seizure of temporal lobe epilepsy and improve the cognitive dysfunctions to some extent.

Objective To explore the functional location of brain regions related to internet game addiction using clue-reaction model and functional magnetic resonance imaging (fMRI). Methods Twenty participants with internet game addiction and 20 control subjects without addiction were tested. They were presented with different internet game videos and the paired common life videos while undergoing fMRI. Questionnaire survey was employed to investigate their emotion changes after watching the game video; the activation data produced by the stimulations were collected through the measurement of blood-oxygen-level dependent signals in the brain. Subtraction algorithm was adopted to analyze the corresponding regions of interest. The activated brain areas stimulated by the internet game videos were determined. Results Compared with the common life video watching, the interact game video watching showed significantly different results of psychological assessments, including emotional states, degree of thirst, degree of liking and wishing to re-watch in the addiction group (P<0.05); while the interact game video watching only had a strong degree of re-watching as compared with the common life video watching in the control group. As compared with the common life videos, internet game videos could induce significantly high activation in the parietal lobe and visual cortex of the temporal lobe of the left brain region in the control group (P<0.05);while significantly activation of all the brain regions, except the nucleus accumbens and the caudate nucleus of the left brain region, was found in the internet game video watching as compared with those in the common life video watching in the addiction group (P<0.05). Conclusion The regions of brain activation of the internet game addiction can be determined by fMRI and these areas may be involved in the generation and maintenance of the internet game addiction.

Objective To explore the effect of Internet addiction on adolescent's attention.Methods Neuropsychological evaluations of attention function were done separately in 18 adolescents who met the diagnostic criterion for Internet addiction and in other 18 ones without Intemet addition tendency as a control group. With auditory and visual oddball paradigms, and stimulated by standard,target and novel stimuli, EEG was recorded and analyzed to get the event-related potential P300 and compare the latency and amplitude of P3a and P3b between the 2 groups. Results Compared with the controls, the attention of Internet addiction group was decreased significantly in neuropsychological evaluations. The latency of P3a potentials induced by novel stimulus was much shorter and the amplitude of it was higher in addiction group than in control group, but the latency of P3b potentials generated by target stimulus was prolonged and the amplitude decreased obviously. Conclusions Intemet addiction can cause damage to adolescent's attention function. There is a correlation between the attention impairment and the change of P300 potentials.

OBJECTIVETo understand the clinical features of death from hand, foot and mouth disease (HFMD) and to explore the early warning index of HFMD death.

METHODSA total of 41 HFMD death cases were collected as case group in Shandong province between 2009 and 2011, and another 123 serious HFMD cases were selected as control group according to the similar gender, place of origin and hospital level, with the ratio at 1:3. We investigated the general situation, clinical treatment, past medical history, clinical symptoms and signs of the ill children, and applied the conditional logistic regression to explore early warning index of HFMD death.

RESULTSThe rate of patients who had symptoms in nervous system, digestive system, circulatory system and respiratory system were separately 90.2% (37/41), 58.5% (24/41), 53.7% (22/41) and 90.2% (37/41) in case group; and the proportions were 44.7% (55/123), 13.8% (17/123), 10.6% (13/123) and 12.2% (15/123) respectively in control group. The difference between the two groups showed statistical significance (χ(2) = 25.881, 32.791, 34.011, 86.505, P < 0.05). In case group, 37 patients had neurogenic pulmonary edema, 26 patients got encephalitis, 15 patients had respiratory and circulatory failure, 7 patients got pulmonary hemorrhage, 4 patients had multiple organ failure, 4 patients got myocarditis and 1 patient had cerebral hernia. According to multi-factor logistic regression analysis, the early warning indicators of HFMD death included neck resistance (case group: 34.1% (14/41), control group: 4.1% (5/123); OR = 7.145, 95%CI: 1.748 - 29.204), vomiting (case group: 58.5% (24/41), control group: 13.8% (17/123); OR = 5.632, 95%CI: 1.793 - 17.685) and increase of heart rate (case group: 53.7% (22/41), control group: 10.6% (14/123), OR = 6.370, 95%CI: 1.517 - 26.743).

CONCLUSIONIn the process of clinical treatment and care, we should interfere the serious HFMD patients with neck resistance, vomiting and increase of heart rate, and thereby reduce the death from HFMD.

China ; epidemiology ; Female ; Hand, Foot and Mouth Disease ; diagnosis ; epidemiology ; mortality ; Humans ; Infant ; Infant, Newborn ; Logistic Models ; Male ; Risk Factors ; Survival Rate

Objective To explore the relationship between genetic polymorphisms of CACNA1C that encoded the alc subunit of the L-type calcium channel and the efficacy of calcium channel blocker (CCB,Nifedipine extended release tablet/20 mg/d)in essential hypertension(EH)patients of Han Chinese in Wenzhou.Methods For the enrolled 103 EH patients,Multiplex Polymerase Chain Reaction(Muhi PCR)and matrix assisted laser desorption ionization time of flight MS(MLD1-TOF MS)were performed to detect their genotypes(rs216008,rs1051375,rs2299661,rs10848683,rs215976),blood pressure(BP)after CCB monotherapy was compared among patients with different genotypes.Results(1)Blood pressure was significantly reduced in all patients post CCB(P ＜ 0.05 vs.pre-CCB).(2)Diastolic blood pressure reduction was more significant in subjects with rs2299661 C/C genotype(wild genotype)than in subjects with rs2299661C/G and rs2299661G/G genotype(mutational genotype)[(12.46 ± 7.91)mm Hg (1 mm Hg=0.133 kPa)vs.(7.22±8.01)mm Hgand(5.93 ± 9.77)mm Hg,P＜0.05].(3)Systolic blood pressure reduction was more significant in subjects with rs216008 C/C genotype(wild genotype)than in subjects with rs216008 C/T genotype(mutational genotype)[(20.60 ± 12.35)mm Hg vs.(13.62 ±10.21)mm Hg,P ＜0.05].(4)Blood pressure reduction was similar between subjects with genotype of rs1051375,rs10848683 and rs215976.Conclusion EH patients with wild genotype of rs2299661 and rs216008 in CACNA1 C are more likely to be responders of CCB monotherapy.

OBJECTIVETo design ABC damage variable and positioning system for acetabular fracture and explore the feasibility and clinical practical value of the system through the multi-center analysis of 1122 acetabular fractures.

METHODSAccording to acetabular three-column conception, and pelvic ring lesions damage direction caused by acetabular fracture domino effect and injury degree of proximal femur joint, it defined class A as any column acetabular fracture; class B as any two-column acetabular fracture; class C as front, dome and posterior mixture acetabular fracture. Lower case English letters a, m, p represented front, dome, posterior fracture, respectively. Acetabular damage variables: 1 was simple displaced fractures; 2 was comminuted fractures; 3 was compression fractures. Pelvic ring lesions damage variables: alpha was sacroiliac joints or sacroiliac fracture horizontal separation deflection; beta was sacroiliac joints or sacroiliac fracture vertical separation deflection; gamma was pubic symphysis separation/superior and inferior ramus of pubis fracture deflection; alpha beta gamma delta was compound floating damage. Proximal humerus joint damage variables: I was femoral head fracture; II was femoral neck fracture; II was intertrochanteric fractures of femur; IV was I to III compound fracture. The ABC damage variable positioning system for acetabular fracture was made up by the above-mentioned variables. The statistics from March 1997 to February 2010 showed 1122 cases acetabular fractures with 18 cases of double side acetabular fracture and 1140 cases of acetabular fractures. The pelvics anterior-posterior view, ilium and obturator oblique view, and 2/3D-CT materials were analyzed and researched.

RESULTSEach damage variables distribution situation in 1140 cases of acetabular fracture involved A in 237 cases (20.8%), B in 605 cases (53.1%), C in 298 cases (26.1%);front column fracture in 808 cases(70.9%), dome fracture in 507 cases (44.5%), posterior fracture in 1026 cases (90%). Acetabular variables: variabe 1 in 203 cases of simple displaced fracture (17.8%); variabe 2 in 516 cases of comminuted fracture(45.3%); variabe 3 in 421 cases of compression fracture (36.9%); 249 cases of pelvic ring lesions damage (21.8%), 75 cases femoral head fracture (6.6%); 18 cases of double side acetabular fracture and relative pelvic ring and proximal humerus joint variables (1.58%). Key part and curative effect elements of 1140 cases acetabular fracture: 507 cases of dome or posterior acetabular fracture (44.5%); 421 cases of compression fracture (36.9%); 249 cases of pelvic ring variables (21.8%); 75 cases of proximal humerus joint variables (6.6%); 486 cases of simple Aa/pl/2,Bapl/2 acetabular fracture (42.6% ).

CONCLUSIONCompression fracture, especially defected compression fracture, takes important part in acetabular damage variables, and also presents that acetabular fracture with pelvic ring and proximal femoral damage variables are not rare at all. The relationship of the acetabular fracture damage variables, and its percentage shows the key points and elements in clinical treatment: weight-bearing to dome accounts for 44.5%; compression to defects account for 36.9%, pelvic ring to float accounts for 21.8%; dome fracture to double side fracture account for 6.6%. The system has significant guiding effects on clinic in terms of evaluation of injury severity, anatomic localization, difficulty index, alternative strategy, operative approach, effect of treatment,and prognosis. And the most important thing is that the system creates the comparison of damage variables in same type of fracture and the communication of homo-language and explores a new method.

Acetabulum ; injuries ; Adolescent ; Adult ; Aged ; Child ; Female ; Fractures, Bone ; classification ; diagnostic imaging ; Humans ; Male ; Medical Informatics ; methods ; Middle Aged ; Tomography, X-Ray Computed ; Young Adult

Aim To research the effect of PDG on bone metabolism in young rats. Methods The experimental rats were randomly divided into contro group, PDG-25 group and PDG-50 group. PDG-25 group and PDG-50 group were given PDG at the dose of 25 mg·kg