This paper was aimed to discuss the mechanism of aristolchic acid toxicity, pathogenesis and possible causes of aristolchic acid nephropathy. Recent published studies both at home and abroad were summarized on the impact of aristolchic acid on the incidence and progression of aristolchic acid nephropathy. The results showed that traditional Chinese medicine (TCM) containing aristolchic acid was closely associated with the incidence of aristolchic acid nephropathy. It was concluded that the paper provided some suggestions on preventing aristolchic acid nephropathy.

Objective To investigate the factors causing exudation of drugs by intravenous contrast medium in CT enhanced scan, and to analyze the corresponding measures. Methods From January 2016 to June 2017 in the First People's Hospital of Jiande City 61 cases of drug extravasation enhanced CT scanning in patients as the research object, through the observation of the drug leakage factors to agents in this group of patients with intravenous contrast and record, in order to find out measures. Results The statistics show, this group of patients with drug extravasation factors: 12 years of age, the incidence rate was 63.93％ (39/61) injection velocity; the incidence rate of 3.0～4.0ml/s was 70.49％ (42/61);small vein injection of vascular forearm 80.33％ (49/61); osmotic pressure, the incidence rate of 300mOsm/kgH2O was 83.61％ (51/61). Conclusion CT scan causes intravenous contrast agent oozing drugs are various, according to the specific selection of patients with drug exudation measures, can effectively improve the patients clinicalcharacteristics of blood stasis, swelling, pain, and has important practical value.

Objective To investigate the effect of the balance between helper T lymphocyte (Th) 1 cytokines and Th2 cytokines in the serum of hepatic fibrosis rats induced by CCl4 on the expression of β-catenin in their livers. Methods Seventy-five rats were divided into control group,treatment group and model group. Hepatic fibrosis models were built by subcutaneous injection of CCl4in male Wistar rats, then rats in treatment group were treated with pentoxifylline(PTX) by intragastric administration. The model rats without PTX treatment served as treatment control. The serum levels of Th1 cytokines(interferon-γ, IFN-γ; tumor necrosis factor-α, TNF-α), Th2 cytokines (interleukin-4,IL-4;interleukin-6,IL-6) and type Ⅳ collagen were measured by enzyme-linked immunosorbent assay (ELISA). The expression and distribution of β-catenin in liver tissue and the percentage of area of type Ⅳ collagen accounted in the liver were analyzed by immunohistochemical analyses. The changes in serum cytokines were depicted by using One-way ANOVA, and the correlation between β-catenin expression and cytokines levels or hepatic fibrosis development was elucidated by Bivariate.Results The serum levels of Th2 cytokines in model group were significantly higher than those in treatment group, and even higher than those in control group (F=71. 260,91. 732, all P＜0.05).However, the levels of Th1 cytokines in model group were significantly lower than in treatment group while even lower than those in control group(F= 50. 420,10. 625, all P＜0.05). Serum cytokines came out to be Th2 polarized. Meanwhile, the percentage of type Ⅳ collagen area accounted in the liver,which was corresponding to the degree of liver fibrosis, was lower in the treatment group than the model group and even lower in control group (F=3 000,both P<0.05). β-catenin expression in the liver of model group was stronger than that in the treatment group, and even stronger than that in normal group (F=92. 030, both P＜0. 05). According to β-catenin immunohistochemical analyses based on patho-photos, livers from the model group showed dark color in both cell cytoplasm and nucleus, while the liver from the treatment group only showed weak color in cytoplasm and no straining color in nucleus and the liver from normal group showed colors neither in cytoplasm nor in the nucleus.The expression of β-eatenin had a positive correlation with either the level of Th2 cytokines in serum of rats (r=0. 560,P＜0.01) or the percentage of area of type Ⅳ collagen accounted in the liver of rats (r=0. 757, P＜0. 01). Conclusions Th2 polarization in serum cytokines can aggravate the development of liver fibrosis by inducing the expression of β-catenin, which in the livers of rats is a reflection of the degree of the liver fibrosis.

ObjectiveTo investigate the relationship between novelty seeking and impulsivity behavior in rats.MethodsTwo models were used to test Novelty seeking,one was activity in a new environment model,the other was novel object preference model.And impulsivity was measured by T-maze.All rats(48) were used to examine the relationship between these two behaviour traits.ResultsNovelty seeking:the locomotor activities measured in a new environment for 30 min were (4695.58 ± 1579.87)cm,the exploring number of entries into the novel object area and time spending in the novel object area were respectively(20.92 ± 14.84)entries and (178.12± 135.22)s.Impulsivity:the average times of choosing low reward(LR) in the two test days were(4.71 ±2.71 ).Pearson product moment correlation was performed to investigate the relationship between these two behaviour traits,and the results suggested that there were notable correlation between novel object preference and impulsive decision making( r =0.295,P＜ 0.05 ),yet no significance were found between new environment activity and impulsive decision making.ConclusionNovelty seeking and impulsivity may be correlated with each other depending on different models.

Objective To observe the effects of phenytoin and gabapentin in therapeutic dosage on low-dose veratridine-induced epileptiform discharge in rats' hippocampal CA1 neurons,and explore the involved mechanisms.Methods By means of whole-cell patch clamp technique,the epileptiform discharge model of rats' hippocampal CA1 neurons was constructed with extracellular perfusion of 0.5?mol/L veratridine,and the model should be regarded as successfully estabilshed if bursting discharge emerged within 30min perfusion.The effects of phenytoin(2.5,5,10 and 15?mol/L) and gabapentin(2.5,5 and 10?mol/L) on the epileptiform activity were observed under the voltage-clamp configuration,and the current changes for 1 hour in CA1 neurons was also observed.Results Nine-sixteen minutes after veratridine perfusion,the huge,rhythmic slow oscillation emerged,with 100～200Hz high-frequency discharge,in the hippocampal CA1 neurons,which was similar to the paroxysmal depolarization shifts(PDS),implying that the epileptiform activity was reproduced.Therapeutic dose of phenytoin blocked the veratridine-induced epileptiform activity.The bursting interval of the epileptiform activity was prolonged along with the increased phenytoin concentration,and the duration of bursting was not shortened.1h current decreased gradually in the generation of veratridine-induced epileptiform activity.Therapeutic dose of gabapentin did not block the epileptiform activity in this model.Conclusions In the epileptiform discharge model of rats' hippocampal CA1 neurons,phenytoin can block the epileptic activity in a dose-dependent manner,and the effect may be related to the inhibition of 1h currents.Gabapentin shows no influence on the epileptiform activity,and the possible mechanism may be its ineffectiveness to the persistent sodium currents,and vertridine-induced epileptiform activity does not enhance the 1h currents.

Objective To observe the clinical efficacy of different kinds of insulin combined with Metformin in the treatment of T2DM.Methods 120 T2DM patients were selected and divided into three groups according to different therapies of reducing blood sugar with 40 cases in each group.Group A was treated with insulin glargine combined with Metformin;Group B with insulin detemir combined with Metformin and Group C with protamine zinc insulin combined with Metformin .The time for reaching the standards of blood sugar and the corresponding usage amount of insulin of three groups were observed;After 6 months, the three groups were com-pared in terms of FBG, PBG HbA1c, HOMA-IR, TC, TG and LDL-C.Meanwhile, the incidence rate of hypoglycemia after treat-ment was observed.Results Time for reaching the standards of blood sugar in Group A, Group B and Group C was (6.9 ±2.3)d, (4.1 ±3.0)d and (3.8 ±1.5)d, respectively;the corresponding dosages of insulin of the three groups was (19.0 ±7.8)U, (12.1 ±5.9)U and (11.9 ±5.3)U, respectively, with significant difference between Group A and Groups C, D (p<0.05) and insignifi-cant difference between Group B and Group C (p>0.05).After 6 months, FBG, PBG, HbA1c, HOMA-IR in Group B, Group C and Group A were significantly reduced (p<0.05);with insignificance between Group B and Group C (p>0.05).6 months follow-ing the treatment, TC, TG and LDL-C in Group B, Group C and Group A were significantly different (p<0.05), with insignificant difference between Group B and Group C (p<0.05).The incidence rate of hypoglycemia in Group A, Group B and Group C was 22.5%, 20.0% and 5.0%, respectively, with those in Group B and Group C significantly lower than Group A (p<0.05) and in-significant difference between Group B and Group C (p>0.05).Conclusion The insulin detemir and protamine zinc insulin com-bined with Metformin has a better clinical efficacy in the treatment of T2DM.It can promptly control the blood sugar level and lead to a lower incidence rate of hypoglycemia.Therefore it is worthy of promotion.

OBJECTIVE:To evaluate the current situation and trend of narcotic analgesics used in our hospital.METHO-DS:The data of narcotics used in our hospital during 2003～2006 were analyzed statistically.RESULTS:Narcotic analgesic used in our hospital during 2003～2006 showed an upward trend year-on-year in both consumption quantity and consumption sum,much as in the consumption of morphine preparation.Consumption of Pethidine was decreasing year on year.However,the consumption of fentanyl injection had been ranking at the first place.CONCLUSION:The use of narcotic analgesics tended to be rational in variety,dosage form and route of administration.

Objective To observe the effects of low dose of veratrine on the discharges of rat hippocampus pyramidal neurons,and to elucidate its possible cytological mechanism.Methods The discharge features of hippocampus CA1 pyramidal neurons of 14-day-aged healthy Sprague-Dawley rats induced by low dose(0.3～0.8?mol/L)of veratrine were observed by slice patch-clamp technique.Presynap- tic stimulation was given to Schaffer collaterals.Presynaptic receptor inhibitors such as 6-cyano-7-nitroquinoxaline-2,3-dione(CNQX, 5?mol/L),DL-2-amino-5-phosphonopentanoic acid(AP-5,12.5?mol/L),bicuculline(Bic,10?mol/L)and tetrodotoxin(TTX,40～80nmol/L)were used to investigate the influence on veratrine-induced epilepsy andⅠ-Ⅴcurves were plotted under these conditions.Elec- trophysiological mechanism of veratrine-induced epilepsy was elucidated on the basis of these experiments,Results After a perfusion with low dose of veratrine,the pyramidal neurons were found to discharge relatively fixed-mode slow wave epileptoid bursts accompanied with hyperpolarization of membrane potential.These epileptoid bursts were not blocked by a mixture of CNQX,AP-5 and Bic,but by low dose of TTX.After a perfusion with veratrine,Ⅰ-Ⅴrelationship tended to be nonlinear and the depolarization rectification was enhanced,which were reversed by administration of low dose of TTX.The subthreshold TTX-sensitive persistent sodium current of CA1 pyramidal cells was enhanced by veratrine in a voltage-dependent manner.Conclusion Inducing slow wave epileptoid bursts,the low dose of veratrine can remarkably change the discharge features of CA1 pyramidal neurons.Such epileptoid activities were not influenced by the synaptic receptor inhibitors,and were obviously related to the persistent sodium current.

Tumor genesis and development often result from deregulation of important biological pathways at the gene expression level. Although there has been much work focused on searching gene sets using gene expression data or other prior information, proper statistical testing of the gene sets is still an open question. Most studies have expanded the testing method of a single gene into the gene sets. Parametric statistical analysis of gene sets ( p-SAGE ) was presented for determining the significant gene sets or pathways associated with a phenotype of interest. The method was applied to brain tumor experiments to identify many gene sets. Some of the newly discovered gene sets were related to signal transduction and immunity. This simple and effective method gives useful biologically meaningful results.

Type 2 diabetes is a metabolic disease with increasing prevalence,which causes great socioeconomic burden.Intestinal flora is the microbiota located in the human intestines,which are participating in human growth and development,physiological procedures,or even pathogenesis as a closely connected environmental factor.There have recently been rapid progresses in the research on the relationship between intestinal flora and type 2 diabetes in the field of endocrinology and metabolism.In this article,we reviewed the overall framework and research progress in the relationship between intestinal flora and type 2 diabetes,aiming to shed some light on the future research about this topic.