Objective A quantitative study of the DNA skeletal muscle cell nuclei during 0～96h postmortem was performed.Method By the histochemical and image analysis.Result The color and the areas of the nuclei stained with the Feulgen staining method became fainter and smaller gradually at 12 hpm. There was a linear relationship between the degradation rate of the nuclear DNA and the length of the PMI.Conclusion The quantitative image analysis of DNA has a wide prospect of application, but the method has been studied further in aspects of the precise and standadization of the method as well as the effects exerted on the results from the study materials.

Objective To evaluate the expression and significance of P-glycoprotein(P-gp) in colorectal carcinoma. Methods The expression patterns of P-gp in 48 patients with colorectal carcinoma were examined by immunohistochemistry SP mothod and were analyzed its correlation to clinic opathological features. Results The expression of P-gp was related to lympy node metastasis. Its expression was not related to sex and age of the patients, localization of the primary tumor, tumorsize, histological grade, localinvasion, distant metastasis and Duke's stage. Conclusion Detecting the expression of P-gp might play an important role in chemotherapy strategy of colorectal carcinoma.

Objective To study the change of Insulin-like growth factor 1(IGF-1)and Epidermal growth factor(EGF)level in blood of newborns with asphyxiated.Investigation the effect of stomach-intestine hormone to newborns asphyxiated.Methods plasma IGF-1,EGF level of 48 neonatal asphyxia and 36 normal newborns(1d,3d,7d)were tested by radioimmunoassay.Result In comparision with normal neonatal,IGF-1,EGF level of neonatal asphyxia reduced significantly(P

Objective To integrative the effect of ulinastatin on postoperative cognitive function in elderly gastric cancer surger-y.Methods Two hundred elderly patients with gastric cancer surgery were randomly divided into observed group (100 cases)and control group (100 cases).Patients in observed group received the intravenous drip of ulinastatin before and after the surgery,while others only received the intravenous drip of physiological saline before and after the surgery.Results The urine output of observed group was (441.7±78.5)mL,which was significantly lower than that in control group as the result was (613.2±81.2)mL(P <0.05).After the treatment,the score of MMSE,visual regeneration and association learning in both observed group and control group were significantly lower than that before the treatment(P <0.05).The scores of MMSE,visual regeneration and association learning in observed group were 24.4±1.5,9.7±1.7 and 12.4±1.8,which were significantly higher than that in control group as the scores were 21.1±1.0,8.7±1.5 and 11.3±1.7 (P <0.05).The level of S100βin serum of observed group at the end of sur-gery,1 day and 3 day after the surgery were (0.099±0.024)μg/L,(0.074±0.026)μg/L and (0.061±0.022)μg/L,which were significantly lower than that in control group as the results were (0.138±0.042)μg/L,(0.110±0.034)μg/L and (0.075±0.031)μg/L (P < 0.05).Conclusion Ulinastatin can not only improve the postoperative cognitive dysfunction in elderly patients with postoperative,but can also reduce the level of S100βin serum.It provides brain protection for patients.

Trace impurities of Al, Ca, Co, Fe, K, Mg, Mn, Na, Ni in silicon nitride powder were determined by slurry introduction into a solution-cathode glow discharge-atomic emission spectrometer (SCGD-AES).The effect of particle size on the stability of suspension was investigated.A 6-port valve was selected to link sampling system and SCGD-AES, by which the suspension could be introduced into the SCGD-AES to get instantaneous spectrum signal.The calibration curves for quantitative analysis could be established using aqueous standards and the pH of suspension was not required to be adjusted accurately.The applied voltage, solution flow rate, and integral time of PMT were set to 1080 V, 1.2 mL/min and 800 ms, respectively.In this work, slurry sampling was combined with SCGD-AES by a 6 port 2-pos valve.Powder Si3N4 was tested by this way and the limits of detection for all nine elements were 0.2-53.0 mg/kg.The RSDs were 1.1%-5.0%.The detection result of trace impurities in standard reference material ERM-ED101 agreed with that obtained from inductively coupled plasma atomic emission spectrometry.This method was proved to be accurate, reliable and valuable.

AIM: To compare the effects between topiramate and slow-release sodium valproate in treating refractory epilepsy. 　METHODS: Topiramate group of 39 patients (M 21, F 18; age 28 a± s 20 a) was compared with sodium valproate group of 41 patients (M 22, F 19; age 27 a±17 a) in antiepileptic effect of refractory epilepsy. Adult's and children's dosages of topiramate were increased gradually about 200 mg*d-1 and 4 mg*kg*d-1 respectively during about 2 mo, po, bid, for 6 mo as a course. Adult's dosage of slow-release sodium valproate was 0.5-1 g*d-1, and children's was increased gradually to total dosage: 15-30 mg*kg*d-1, po, qd or bid (morning or morning and noon), for 6 mo as a course. Effects were analysed between these two drugs after treatment 4 and 6 mo.　RESULTS： Simple and complex partial seizures with or without secondary generalized seizure, in topiramate group were much more improved than these in sodium valproate group 6 mo after treatment. Four patients of topiramate group appeared temporary adverse reactions of central nervous system, such as tiredness, sleepiness and distraction, but one patient of sodium valproate group had severer decreased function of bone marrow.　CONCLUSION: Topiramate is one of effective antiepileptic drugs and superior to slow-release sodium valproate. There are the apparent absence of any effects of topiramate on the bone marrow and on indexes of liver and kidney.

Objective To determine the expression of phosphatidyhnositol 3-kinase (PI3K), phosphorylated protein kinase B (P-AKT) and protein kinase B (AKT) in cervical cancer and explore the correlations with the genesis and development of cervical cancer. Methods Western blot was used to detect the expression of PI3K, P-AKT and AKT proteins in 66 cases of cervical tissues, including 33 cervical cancers, 23 cervical intraepithelial cancer, 10 normal cervical tissues, and analyzed the clinical significances according to clinical informations. Results In cervical cancers, cervical intraepithelial cancer and normal cervical tissues, the expression of PI3K protein were 1.3880±0.0435, 0.5330±0.0939, 0.2427±0.0888 and had significant differences among them, but there was no significant difference in the ratio of P-AKT and AKT, which were 5.8702±0.0543, 5.0755±0.0888, 3.8353±0.0056. The ratios of P-AKT and AKT had association with histological type, the ratios in squamous cancer of the cervix and in adenocancer and denosquamous cancer were 6.7823±0.7745 and 0.7621±0.0709, and the ratios were much higher in squamous cancer of the cervix than adenocancer and denosquamous cancer. Conclusions Overexpression of PI3K protein is involved in the occurrence of human cervical cancer. The ratio of P-AKT and AKT plays a more important role in squamous cancer of the cervix.

0.05). Conclusion In our samples, this two polymorphisms in A2M might play similar roles in the susceptibilities to PD and AD.

Aim Organotin compounds are important organometallic chemicals with a variety of technical applications.Of these compounds,the trialkyltins,especially tributyltin,triphenyltin and trimethyltin,have been proved to have the distinct ability to induce tumor cell apoptosis and significant antitumor activity.They can induce tumor cell apoptosis through Fas receptor,mitochondrial,Ca 2+,MAPKs,p53,NF-?B and caspase/p38/ROS pathway.This paper reviewed recent progress in the studies on signal transduction in tumor cell apoptosis induced by trialkyltin compounds.

Objective To observe the therapeutic efficacy of continuous arterial infusion chemotherapy combined with radiofrequency hyperthermia in the treatment of patients with advanced colorectal cancer.Methods A total of 20 advanced colorectal cancer patients with various distant metastasis were treated by the combined continuous intra-arterial infusion chemotherapy and radiofrequency hyperthermia.For the chemotherapy,a dose of 200mg/m2 surface body area of calcium folinate(CF) was given for 1 to 3 days.80mg/m2 of cisplation was infused intravenously for the first day and repalced by etoposide Vp16,60mg/m2 for 1 to 3 days in patients with renal dysfunction.For intra-arterial infusion,a dose of 500mg/m2 5-FU was given for 72 hours.For patients with liver metastases,chemoembolization(ADM 30mg/m2+MMC 6mg/m2 mixed with ultra-lique fied lipiodol) was carried out.Radiof requency hyperthermia with a frequency of 41MHz was performed on the second day after chemotherapy.Results Response rates were as sessed by CT scan and ultrasonography.The overall response rate(CR+PR) of the cases was 70.0%.No serious side effect or complication was found in the course of chemotherapy.Local pain and lipid nodule were occasionally observed in some patients after hyperthermia.Conclusion Continuous intra-arterial infusion chemotherapy in combination with radiofrequency hyperthermia is an useful and safe method for the treatment of patients with advanced colorectal cancer.