Objective:To develop an HPLC gradient elution method for the simultaneous determination of fangchinoline,tetrandrine,mesaconitine,aconitine and hypaconitine in Huoxue Zhentong plaster.Methods::A Dikma-C18 (200 mm×4.6 mm,5 μm) chromatographic column was adopted,the mobile phase was methanol-acetonitrile (3∶1)(A)-0.06% diaethylamin solution (B) with gradient elution at a flow rate of 1.0 ml·min-1,the detection wavelength was 280 nm for fangchinoline and tetrandrine,and 235 nm for mesaconitine,aconitine and hypaconitine.The column temperature was set at 30 ℃,and the injection volume was 10 μl.Results::There was a good linear relationship when the content of fangchinoline,tetrandrine,mesaconitine,aconitine and hypaconitine was within the range of 7.490-149.800 μg·ml-1(r=0.999 9),14.610-292.200 μg·ml-1(r=0.999 8),4.150-83.000 μg·ml-1(r=0.999 2),5.250-105.000 μg·ml-1(r=0.999 6) and 5.140-102.800 μg·ml-1(r=0.999 9),respectively.The average recovery and the corresponding RSD were 99.87%(0.49%),97.79%(1.11%),96.97%(1.75%),98.60%(1.50%) and 97.94%(0.98%)(n=6),respectively.Conclusion:An HPLC gradient elution method is successfully established for the simultaneous determination of 5 components in Huoxue Zhentong plaster.The established method is simple,accurate and reliable,which is helpful to the quality control of Huoxue Zhentong plaster.

The thyroid allografts in rats were cultured for 48h in the conditions of hyperbaric oxygen (a mixture of 95% O2,5% CO2 pressurized at 2 atmospheres)and low pH(5.5 and 6.9).Uncultured and air cultured allografts were taken as control groups.The thyroid slices were transplanted under the kidney eapsulse of thyroidectomized recipients.By examining histological changes,detecting the serum T3 and T4 levels and five weeks body weight gain,the graft survival was cvaluated.Though the thyroids cultured in hyperbaric O2 were contaminated with the passenger leukocytes,the grafts had prolonged survival,suggesting this method might effectively diminish MHC immunogenicity to thyroid grafts.

Obesity is not only the high risk factor of diabetes mellitus,coronary heart disease and hypertension,but also a cause of renal damage.Diabetic nephropathy is one of the most frequent chronic microvascular complications of diabetes mellitus,and one of the leading causes of end-stage kidney failure.It is documented that the obese patients with type 2 diabetes may have obviously multiple metabolic abnormalities and are more prone to develop diabetic nephropathy.This article summarized the pathogenetic mechanisms of kidney injury in diabetic obese patients and provided some ideas in the medical therapy of diabetic nephropathy.

Objective: To describe the prevalence of food allergy in Asian patients with allergic rhinitis. Study Design: A non-randomized prospectively collected patients over a three year period, with complaints of nose congestion, rhinorrhea and/or nasal discharge. Results: There were 435 patients enrolled, 213 children and 222 adults. The children group had a high prevalence of allergen specific IgE to Dermatophagoides pteryonysinus (70%), Dermatophagoides farina (69%), and Blomia tropicalis (55%); followed by dogs (32%), cats (19%) and cockroaches (19%). In the children food allergy category, the top three allergens were egg white (54%), milk (31%) and soya bean (13%). The adult group had results of Dermatophagoides pteryonysinus (71%), Dermatophagoides farina (72%), and Blomia tropicalis (59%); the adult food allergy category, the top 3 allergens were egg white (13%), milk (6%) and soya bean (5%). There was a statistically significant difference in the child and adult group for Dust, D. pteryonysinus, D. farina, B.tropicalis, egg white, wheat, gluten and soya bean. In the age specific child groups, there was an increased in egg food allergy levels, with a peak at the age of five-nine years old and decreasing thereafter (p=0.04). In the children group, the mean Total Nasal Symptom Score (TNSS) was 10.3 (range of 7 to 13); the adult group was similar, with a mean TNSS of 9.8 (range 5 to 12). Conclusion: The prevalence of food allergy in paediatric patients with allergic rhinitis is fairly high and should be considered when treating these children.

ObjectiveTo study the relation ship between progressive cerebral infarction and thyroid hormone level,and analyze the risk factors of progressive cerebral infarction.MethodsThe thyroid hormone,triglyceride esters and fasting glucose levels of 48 patients with progressive cerebral infarction,138 patients with non-progressive cerebral infarction and 60 healthy subjects as control group were measured.ResultsCompared with the patients with non-progressive cerebral infarction,serum T3 of patients with progressive cerebral infarction was lower( P ＜0.05),and the levels of triglyceride ( TG),C-reactive protein ( CRP),and fasting blood glucose were higher ( all P ＜ 0.01 ).ConclusionPatients with progressive cerebral infarction were in a low level of thyroid hormones,and the increasing levels of TG,CRP,and fasting blood glucose were risk factors for progressive cerebral infarction.

ObjectiveTo investigate the effects of postconditioning with Shenmai-injectio on myocardial ischemia-reperfusion (I/R) injury in rats.MethodsThirty-six healthy male SD rats aged 10-12 weeks weighing 240-260 g were randomly divided into 3 groups ( n =12 each):sham operation group (group S) ; myocardial I/R group and Shenmai-injectio postconditioning group (group SPO).Myocardial I/R was produced by ligation of the left anterior descending branch of coronary artery for 30 min followed by 120 min reperfusion in groups I/R and SPO.In group SPO Shenmai-injectio 9 ml/kg was injected iv at the end of 30 min ischemia.Blood samples were collected from abdominal aorta at the end of 120 min reperfusion for determination of serum CK activity and cTnI concentration.The animals were then sacrificed.Myocardial specimens were obtained for microscopic examination,detection of apoptosis and determination of myocardial Bcl-2 and Bax protein expression ( by immuno-histochemis-try).ResultsMyocardial I/R significantly increased serum CK activity,cTnI concentration,apoptotic index (percentage of apoptotic cells) and Bax protein expression and decreased Bcl-2 protein expression in group I/R as compared with group S.Shenmai-injectio postconditioning significantly attenuated I/R-induced above changes and ameliorated histo-pathological damage in group SPO as compared with group I/R.ConclusionShenmai-injectiopostconditioning can reduce myocardial I/R injury by up-regulating Bcl-2 expression and down-regulating Bax expression,leading eventually to reduction in apoptosis.

Objective To observe the changes of circumpapillary retinal nerve fiber layer (CP-RNFL)thickness and optic disk parameters in retinitis pigmentosa (RP) eyes.Methods Prospective clinical case-control study.A total of 25 patients (42 eyes) with RP were in the RP group,and 42 age matched healthy subjects (84 eyes) in the control group.All subjects underwent optical coherence tomography (OCT) examination,in which 37 eyes with 3D optic disk scanning and 5 eyes with circle optic disk scanning.The parameters included average thickness of entire CP-RNFL,thickness of nasal,superior,temporal and inferior quadrant of CP-RNFL,disc area,disc cup area,rim area,cup/disc (C/D) area ratio,C/D horizontal diameter ratio,C/D vertical diameter ratio,disc cup volume and disc rim volume.Results The average thickness and the thickness of temporal and nasal quadrants of CP-RNFL in RP group were significantly thicker than the control group (t=2.27,3.73,6.44;P=0.027,0.00,0.00),while the thickness of inferior and superior areas were the same as control group(t=-1.49,-1.19;P=0.14,0.24).The disc area,disc cup area,C/D area ratio,C/D horizontal diameter ratio,C/D vertical diameter ratio,disc cup volume in RP group were significantly bigger than control group (P＜0.05),while rim area and rim volume were not significant differences (t=1.75,0.40;P=0.08,0.59).Conclusion In comparison with the healthy subjects,the average thickness and temporal and nasal areas of CP-RNFL in RP eyes were thicker,and the disc area,disc cup area,C/D area ratio,C/D horizontal diameter ratio,C/D vertical diameter ratio,disc cup volume in RP eyes were bigger.

Objective To evaluate the effect of dexmedetomidine on the expression of antisense hypoxia-inducible factor-1α (aHIF-1α) during brain injury after asphyxial cardiac arrest and resuscitation in rats.Methods Twenty-four pathogen-free healthy male Sprague-Dawley rats,weighing 250-280 g,were divided into 3 groups (n =8 each) using a random number table:sham operation group (group S),cardiac arrest and resuscitation group (group R) and dexmedetomidine group (group D).Asphyxial cardiac arrest and resuscitation were performed in R and D groups.The rats were tracheally intubated without clipping the trachea in group S.Dexmedetomidine 4 μg/kg was injected via the tail vein at 5 min before clipping the trachea in group D,while the equal volume of normal saline was given instead in S and R groups.Neurological deficit was assessed and scored (NDS) at 12,24,48 and 72 h after recovery of spontaneous circulation (T1 4).The rats were sacrificed after assessing neurological deficit at T4,brains were removed and hippocampi were isolated for determination of cell apoptosis (by TUNEL),HIF-1α expression (by Western blot) and expression of HIF-1α and aHIF-1α mRNA in hippocampal tissues (using polymerase chain reaction).Apoptosis rate was calculated.Results Compared with group S,the NDS at each time point and apoptosis rate of hippocampal neurons at T4 were significantly increased,and the expression of HIF-1α protein and mRNA and 5'aHIF-1α mRNA was up-regulated in R and D groups (P＜O.05).Compared with group R,the NDS at T2.4 and apoptosis rate of hippocampal neurons at T4 were significantly decreased,the expression of 5'aHIF-1α mRNA was down-regulated,and the expression of HIF-1α protein and mRNA was up-regulated in group D (P ＜ 0.05).Conclusion The mechanism by which dexmedetomidine reduces brain injury after asphyxial cardiac arrest and resuscitation is related to down-regulation of 5'aHIF-1α expression in rats.

Objective To research the applications of resting-state functional MRI in conjunction with voxel-based morphometry on cerebral functions and structures in patients with schizophrenia. Methods Thirty-two patients with schizophrenia and 32 healthy people underwent resting state functional magnetic resonance imaging (Rs-fMRI)and sagittal scanning T1WI with 3D FFE Pulse Sequence. Rest1.8 software was applied to calculate the differences of amplitude of standardized low-frequency fluctuation(ALFF)between the two groups,then the voxel-based morphometry(VBM)data of abnormal brain regions were evaluated to compare the differences of grey matter intensity. Finally,combining with ALEF and VBM,we explored the changes of cerebral functions and structures. Results As compared to the control group ,the ALFF-elevated regions were the right putamen ,the left orbital frontal cortex extending to the left putamen and left dorsal-lateral superior frontal gyrus;the ALFF-decreased regions were the right inferior tempotalgyrus,the left posterior cingulated gyrus and the left angular gyrus(P<0.05). No elevated regions of grey matter intensity were found in the patient group. Conclusions Extensive abnormal active regions of the brain under resting state could be found in patients with schizophrenia ,the grey matter intensity of abnormal regions also decreased generally. They are in accordance with the glutamate-hypothesis of schizophrenia ,which involves extensive impairments of neurons ,disorders of neurotransmitter′s circulations and balances.

Objective: To study rDNA ITS (internal transcribed spacers) sequences variation from di erent population of Aquilaria sinensis in main habitat of China. Methods: The rDNA ITS regions of various A. sinensis were ampli ed by PCR method and sequenced, and they were analyzed by means of the software of CLUSTAL and MEGA. Results: The sequences of rDNA ITS region of A. sinensis were reported for the rst time, and the sequences of ITS region were 680bp (ITS1 246bp, 5.8S 163bp, ITS2 271bp). There were 6 variable sites among populations and the genetic distance were 0.0% to 1.1%,which indicated the intraspecific genetic variation was low of A. sinensis. Conclusion: The variation of rDNA ITS sequences can be used to authenticate A.sinensis from di erent geographical regions and their adulterants.