AIM: To investigate the indications and therapeutic effect of the conservative treatment and surgical treatment for vitreous hemorrhage.
METHODS: Hemorrhage reasons, degree of illness, and treatment and final results of vitreous hemorrhage were recorded from 2008 to 2013, and curative effect of different treatments was analyzed.
RESULTS:Selected 22 cases ( 24 eyes ) of conservative treatment, vision degree of 6 eyes ( 25%) had raised, 5 eyes ( 21%) occurred secondary retinal detachment without treatment, 3 eyes (12. 5%) suffered neovascular glaucoma were underwent operation, but the vision had lost completely. In 26 cases ( 31 eyes ) of control (operation) group, vision of 17 eyes (55%) had improved, 2 eyes (6. 5%) suffered the second operation, 2 eyes (6. 5%) suffered the third surgery, 3 eyes (10%) suffered eyeball atrophy. The number of ultimate vision improved with conservative treatment were significantly lower than the number of cases with surgical treatment (P<0. 05).
CONCLUSION: The surgical treatment is still visible vitreous hemorrhage treatment means of positive, but there will be eyeball atrophy and other serious complications, so we should choose a different methods in according to the different treatment objects and treatment time.

Objective To detect the expression of EGF mRNA in renal parenchyma in congenital hydronephrosis in children and to evaluate the role of EGF in causing chronic renal damage. Methods The expression of EGF mRNA in renal parenchyma, renal pelvis and PUJ tissues from congenital hydronephrosis in children was studied by means of RT PCR. Results The expression of EGF in the aff ected renal parenchyma and PUJ tissues decreased.It also decreased in the affected pelvis but the difference was not significant. The decrease of EGF expression was the most obvious in the affected renal parenchyma. Conclusions EGF expression decreased in renal parenchyma in congenital hydronephrosis and the decrease might be related to the chronic renal damage and renal atrophy caused by hydronephrosis.

Objective To investigate the immune changes of interleukin-6(IL-6) of placentae and amnion in severe pregnancy-induced hypertension(PIH) and fetal growth retardation(FGR). Methods Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect IL-6 mRNA levls of placentae and amnion. Results The level of IL-6 mRNA in placentae and amnion in severe PIH group (0.71?0.07,0.81?0.02) are significantly lower than those in normal group(P0.05). Conclusions IL-6 is involved in the immune injury in severe PIH. The decreased levels of IL-6 in placentae and amnion may be the cause of fetal growth retardation

[Objective] To observe the sera immunoglobulin E(IgE) and Complement C3(C3)level changes in patients with chronic urticaria.[Methods] To detect sera IgE and Complement C3 content of 60 cases of chronic urticaria patients and 60 cases of healthy persons by chemiluminescence and Immunity Transmission Turbidity.At the same time,we tested sera IgE and Complement C3 content of both penetration needling and drug groups before and after treatment of 60 cases,and anaylysed the correlation of IgE and Complement C3.[Results]Higher level of sera IgE was detected in patients with chronic urticaria(P 0.05);the correlation of IgE and Complement C3 was negative in both groups.[Conclusions]Detecting Sera IgE and Complement C3 level have reference value in the diagnosis and treatment of chronic urticaria.

Ten pharmacophore models of beta-tubulin inhibitors were established from the training set of seventeen beta-tubulin inhibitors (two categories) with comformer analysis by using the Catalyst software. The optimal pharmacophore model with two hydrophobic units and two hydrogen bond acceptor units were confirmed (RMS = 0.43, Correl = 0.98, Weight = 2.06, Config = 15.97). This pharmacophore model is able to predict the activity of known beta-tubulin inhibitors and can be further used to identify structurally diverse compounds with higher activity.

Objective To investigate the effects of different doses of dexmedetomidine(Dex) on rabbit sinus node and atrioventricular node.Methods A total of 24 healthy male rabbits weighing 1.5-2.8 kg,were divided into 3 groups randomly according to random number table (n =8).Group C (control),critical dosage of Dex causing sinus bradycardia D1 (loading dose of Dex was 10 μg/kg, continual pumping dose was 5 μg · kg-1 · h-1 ),six times of critical dosage of Dex causing sinus bradycardia D2 (loading dose of Dex was 60 μg/kg,continual pumping dose was 30 μg·kg-1 ·h-1 ). Rabbits were anesthetized,the right femoral artery was separated and catheterized followed by real-time monitoring of arterial blood pressure.Right external jugular vein was searched and separated,bi-polar stimulating electrode were inserted to the junction of superior vena cava and right atrium,the index of sinus node and atrioventricular node were observed by means of programmed stimulation.Si-nus node recovery time (SNRT),corrected sinus node recovery time (CSNRT),total recovery time (TRT),and atrioventricular node 2∶1 point were recorded before Dex infusion (T0 ),1 5-20 min after infusion of Dex (T1 )and 50-60 min after perfusion of Dex (T2 ).Results SNRT,CSNRT,TRT and 2∶1 point had no statistical significance.Compared with T0 ,SNRT,CSNRT and CSNRT were signifi-cantly prolonged at T1 and T2 .2∶1 point in group D1 and D2 was shortened obviously at T1 than that at T2 (P <0.05).SNRT,CSNRT and TRT of group D1 at T2 were significantly prolonged,2∶1 piont was shortened compared with T1 (P <0.05).SNRT,CSNRT and TRT of group D1 and D2 were pro-longed both at T1 and T2 than those of group C.2∶1 point was shortened in group D1 and D2 at T1 than that in group C (P <0.05).Compared with group D1,SNRT,CSNRT and TRT of group D2 at T1 and T2 were prolonged,2∶1 point was shortened obviously (P <0.05).Conclusion Load capacity of 10 μg/kg Dex apparently inhibits the function of rabbit sinus node and atrioventricular node,which is partially recovered within a short time (≤ 1 h).The inhibiting effect is more continously and re-markably in load capacity of 60 μg/kg Dex.

Objective To evaluate the effects of different doses of dexmedetomidine on atrioventricular node (AVN) conduction function in the healthy volunteers.Methods Sixteen healthy volunteers of both sexes,aged 18-30 yr,with body mass index of 19-26 kg/m2,were included in the study.Dexmedetomidine was infused in a loading dose of 1.0 μg/kg over 10 min,followed by an infusion of 0.5 μg · kg-1 · h 1 for 50 min (Dose Ⅰ);1-2 weeks later,dexmedetomidine was infused in a loading dose of 1.5 μg/kg over 10 min,followed by an infusion of 0.75 μg · kg-1 · h-1 for 50 min (Dose Ⅱ).Before infusion of dexmedetomidine (T0) and at 15 and 35 min of infusion (T1.2),AVN Wenckebach point,AVN 2 ∶ 1 block point,AVN relative refractory period (AVNRRP),and AVN effective refractory period (AVNERP) were measured.Results AVN Wenckebach point and AVN 2 ∶ 1 block point were significantly decreased,and AVNRRP and AVNERP were significantly prolonged at T1,2 compared with those at T0 (P＜0.05).Compared with Dose Ⅰ,AVN Wenckebach point at T2 and AVN 2 ∶ 1 block point at T1,2 were significantly decreased,and AVNRRP and AVNERP were significantly prolonged at T1,2 in the subjects receiving Dose Ⅱ] (P＜0.05).Conclusion Dexmedetomidine can inhibit AVN conduction function in the healthy volunteers,and the inhibitory effect is enhanced with the increasing doses.

Objective To evaluate the effect of dexmedetomidine on heart rate (HR) of rabbits through in vitro and in vivo experiments, and investigate the mechanism by which dexmedetomidine lowered HR.Methods In vitro experiment Healthy adult rabbits of both sexes, weighing 2.0-2.5 kg, aged 8-10 weeks, were studied.The 24 isolated hearts passively perfused in a Langendorff apparatus were randomly divided into 3 groups (n =8 each) using a random number table: control group (group C) , and dexmedetomidine 3 and 30 ng/ml groups (D1 and D2 groups).The isolated hearts were continuously perfused with K-H solution for 45 min in group C.After 15 min of equilibration, the isolated hearts were perfused for 30 min with K-H solution containing dexmedetomidine 3 and 30 ng/ml in D1 and D2 groups, respectively.At 15 min of equilibration, and at 15 and 30 min of perfusion with K-H solution containing dexmedetomidine, HR and left ventricular systolic pressure (LVSP) were recorded.In vivo experiment Twenty-five healthy adult rabbits of both sexes, weighing 2.0-2.5 kg, aged 8-10 weeks, were randomly divided into 5 groups (n=5 each) using a random number table: dexmedetomidine 3, 6, 9, 12, and 15 μg/kg groups (D3, D6, D9, D12, D15groups), to receive the corresponding doses of dexmedetomidine which was intravenously infused over 10 min.HR and mean arterial pressure were monitored and recorded before administration (T0) , and at 15 and 40 min after administration (T1,2).The correlation between doses of dexmedetomidine and change rate of HR was tested by Spearman correlation analysis.Results In vitro experiment Compared with group C, no significant changes were found in HR and LVSP at each time point in D1 and D2 groups (P＞0.05).In vivo experiment Compared with those at T0 , HR at T1 in D6 and D9 groups, HR at T1,2 in D12 and D15 groups, and mean arterial pressure at T1,2in D6, D9, and D12 groups were significantly decreased (P＜0.05) , and no significant change was found in HR at each time point in group D3 (P＞0.05).The correlation coefficient between doses of dexmedetomidine and change rate of HR was 0.944 (P＜0.05).Conclusion The mechanism by which dexmedetomidine lowers HR of rabbits is not related to direct inhibition of sinoatrial nodes, but associated with the balance of autonomic nervous system.

Fast tract surgery (FTS) has been implemented in different fields of surgery to attenuate the surgical stress response and accelerate recovery.Liver resection is the preferred treatment for a variety of primary and secondary liver tumors.However,liver resection is associated with severe stress response and higher rate of postoperative morbidity and mortality.Fast tract surgery has been reported to accelerate recovery following liver resection.In this review,we summarize the recent progress of fast tract surgery in liver resection.

ObjectiveTo study the mechanism of hemodynamic alternation surrounding the hematoma in the acute stage of intracerebral hemorrhage (ICH) in rats.MethodsSeventy male Sprague Dawley rats were randomly divided into ICH group and sham operated group, which were microinjected with 40 μl fresh autologous blood or saline into the right caudatum respectively. The each group was divided into 7 subgroups at 1h,3h,6h,12h,24h,48h and 72h after the ICH. CT perfusion imaging in measurements of regional cerebral blood flow adjacent to hematomas was performed. The ratios of side to side were measured at the regions around the hematomas by personal computer aided mapping. So the parameters of regional cerebral blood flow(rCBF), regional cerebral blood volume(rCBV) and mean transit time(MTT) were calculated respectively.ResultsThe rCBF and rCBV adjacent to the hematomas were lower than those of the outer region pronouncedly. The alternation of rCBF around the hematoma were fluctuated, which reduced to the valley at 1h after ICH, and then gradually returned to the peaks at 6h and 24h after ICH. In the meantime, the rCBV around the hematoma reduced to the valley at 1h after ICH, and then gradually increased to the peak at 24h after ICH.ConclusionThe abnormal hemodynamic changes can be found in the perihematomal region after ICH. The alternation of rCBF around the hematomas are fluctuated, but the changes of rCBV remain continuous increase. The mass effect of hematoma, intracranial hypertension caused by the mass effect of hematoma, and the autoregulation of cerebral blood flow motivated by the initial depression of cerebral blood flow play a very important role in the changes of cerebral blood flow.