Objective To compare the effects of resuscitation at pure oxygen environment(100% oxygen) or room air environment (21% oxygen) on the uhrastructure of cerebral cortical neurons in hypoxic neonatal rat.Methods Twenty Sprague-Dawley neonatal rats aged 7 days were divided into the pure oxygen environment (POE) and room air environment groups (RAE) after hypoxia,and each group was divided again into 24 h and 72 h subgroups.The pups were placed in an incubator containing 8% O_2 to be at acute hypoxia continued for 2.5 h.The pups were reoxygenated immediately after the above mentioned hypoxia.The pups of POE group were then placed in an incubator containing 100% oxygen and the flow time was 30 rain.The pups of RAE group were reoxygenated with room air in an incubator for 30 rain.According to the planned time points the pups were sacrificed and the brain was removed at 24 h and 72 h after treatment,respectively.The tissue of frontoparietal cortex of the fight cerebral hemisphere was prepared for transmission electron microscopic examination.Results In each reoxygenation group,edema was found in the neurons,neuropil and intercellular space.In the RAE 24 h group,the nuclear membrane in neurons was unclear,the amount of cell organelles was reduced,the mitochondria were swollen with damages of cristae.The rough endoplasmic reticulum was dilatated or vaeuolized and with reduction of ribosomes.The Golgi complex was vacuolized.The number of lysosomes was obviously increased.In the RAE 72 h groups,the changes were similar to those of the former group,but apoptotic-like nuclei and necrotic neurons were more frequently seen. The cellular damages of POE 24 h group were milder than those of RAE 24 h group. The mitochondria and rough endoplasmie reticulum were more abundant and showed less pathological changes in the POE 72 h group as compared with those of RAE 72 h group. Conclusion The rats of POE reoxygenation display milder ultrastructural damages, less apoptosis, necrosis and edema in cerebral neurons than those in rats after RAE reoxygenation.The protective effect of POE resuscitation on cerebral damage of hypoxic neonate rats is superior to that after RAE resuscitation. This hypoxic neonatal rat model may serve as a suitable animal model for research on cerebral cortex neurons caused by hypoxia.

AIM:To study the effect of Taxol on the proliferation, apoptosis, and mRNA expressions of α2,6-sialic acid (SA) and α2,6-sialyltransferase (ST6Gal) in mouse cervical cancer cell line U14.METHODS:After the U14 cells were treated with Taxol, the IC50 value of Taxol to U14 cells was detected by MTT assay.The expression of α2,6-SA and apoptosis-related factors (Bcl-2, Bax, caspase 8 and caspase 3), the apoptosis rate and cell cycle were determined by flow cytometry.The mRNA expression of ST6Gal1 and ST6Gal2 was detected by qPCR.RESULTS:As compared with control group, Taxol induced obvious U14 cell growth inhibition, reduced α2,6-SA expression, up-regulated Bax, down-regulated Bcl-2, decreased the ratio of Bcl-2/Bax, enhanced caspase 8 and caspase 3 activity, increased the apoptotic rate and cell proportions of Sub-G1 and S phases, and induced G2/M phase arrest.Taxol also down-regulated the mRNA expression of ST6Gal1, and slightly up-regulated the mRNA expression of ST6Gal2.CONCLUSION:α2,6-SA and ST6Gal are involved in the multiple effects of Taxol on modulation of the cell cycle and apoptosis in U14 cells.

Objective To review the clinical characteristics of idiopathic portal hypertension (IPH).Methods The clinical and pathological data of 10 patients with idiopathic portal hypertension admitted from December 2008 to December 2014 were retrospectively analyzed.Results Among 10 patients 5 were males and 5 females with averaged age of (38.6 ± 16.1) years.There were splenomegaly and esophageal varices in all 10 cases,upper gastrointestinal bleeding in 3 cases,thrombocytopenia in 9 cases and anemia in 6 cases.Liver function was normal in 7 cases,mild abnormality in 3 cases.Ten cases underwent ultrasound examination and 7 cases had CT scan,cirrhosis was suggested with ultrasound/CT scan in 6 cases.Liver histology showed lobular architecture in existence,no false flocculus to form,variable degree of portal fibrosis appeared.Eight cases were misdiagnosed as liver cirrhosis,the duration of misdiagnosis varied from 1 month to 15 years.Conclusions The clinical manifestation of IPH is similar as cirrhosis caused portal hypertension.Liver histopathological examination can exclude liver cirrhosis,and portal fibrosis and liver terminal portal branch occlusion in histopathology is helpful to the diagnosis of IPH.

OBJECTIVE:To obverse the efficacy and safety of Liuwei dihuang pill combined with TCM prescription acupoint application in the treatment of type 2 diabetic constipation. METHODS:120 patients with type 2 diabetic constipation were random-ly divided into control group(60 cases)and observation group(60 cases). All patients received controlling blood pressure and regu-lating blood lipids drugs,diet control combined with exercise,and fixed dose of Metformin hydrochloride tablet(0.5 g/times,2 times a day)and Acarbose tablet(100 mg/times,3 times a day);based on it,control group received 5 mg Mosapride citrate tablet, 3 times a day;observation group additionally received 8 Liuwei dihuang pills(3 times a day)combined with TCM prescription acu-point application (in double Tianshu Point,double Yongquan point,double Shenque Point and double Zusanli). 7 d was regarded as a treatment course,and it lasted 3 courses. Clinical efficacy,blood glucose [2 h postprandial glucose(2 h PG),blood glucose (FPG)],the clinical symptom indexes(defecation interval time,each defecation time,weekly defecation frequency)before and af-ter treatment,and the incidence of adverse reactions in 2 groups were observed. RESULTS:The total effective rate in observation group was significantly higher than in control group,and the difference was statistically significant (P<0.05). Before treatment, there were no significant differences in the 2 h PG,FPG,defecation interval time,each defecation time and weekly defecation fre-quency between 2 groups(P>0.05). After treatment,2 h PG and FPG in 2 groups were significantly lower than before,and obser-vation group was lower than control group;defecation interval time and each defecation time were significantly shorter than before, and observation group was shorter than control group;weekly defecation frequency was significantly higher than before,and obser-vation group was higher than control group,The differences were statistically significant (P<0.05). During treatment,6 patients showed adverse reactions in control group,and 5 in observation group,and there was no significant difference in the incidence of adverse reactions between 2 groups(P>0.05). CONCLUSIONS:Liuwei dihuang pill combined with TCM priscription acupoint ap-plication shows good efficacy in the treatment of type 2 diabetic constipation. It can effectively improve constipation,reduce defeca-tion interval time and each defecation time,increase weekly defecation frequency and have no influence on blood glucose control with small adverse reactions and high safety.

Objective To develop a reliable and reproducible modei of hyperalgesia arising from chronic compression of dorsal root ganglion (DRG) and investigate the contribution of spinal cord dorsal horn calcitonin gene-related peptide (CGRP) to the clinical manifestation of sciatica.Methods Sixty healthy Wistar rats of either sex weighing 200-300 g were randomly divided into three groups: group A control ( n = 12) ; group B sham operation (n = 24) and group C chronic compression of DRG ( n = 24) . In group B and C the animals were anesthetized with intraperitoneal 1.25% thiopental sodium (50mg?kg-1) . The animals were then placed in prone position and the left L4 and L5 intervertebral foramina were exposed. In group C a 4 mm long 1-0 chromic catgut was inserted into the intervertebral foramen. Motor function of the hind limbs was assessed by gait disturbance scores (GDS) , and paw-withdrawal threshold (PWT) was measured with modified Randall algometer 3, 5, 7, 10, 14, 17, 21 and 28 days after operation. In group B and C 12 animals were decapitated on the 5th and 28th days after operation respectively and lumbar section of spinal cord was removed for determination of dorsal horn CGRP content (by radio-immunoassay) and microscopic examination of DRG. Results In chronic compression group (C) significant hyperalgesia occurred after operation and reached a peak one week after operation then gradually decreased but didn't return to normai on the 28th day, while in sham operation group (B) postoperative hyperalgesia quickly decreased and returned to normai on the 7th day. In group C dorsal horn CGRP content on the compressed side significantly increased on the 5th and 28th day after operation as compared with that on the contralateral side in the sham operation and control group. Microscopic examination of DRG showed significant edema of endoneurium and neurons which persisted on the 28th day but significantly attenuated. Conclusion This animal model reliably produces a disorder resembling low back pain. It is easy to perform less traumatic and produces significant hyperalgesia. The dorsal horn CGRP content on the compressed side significantly increases, which is consistent with chronic pain.

Objective To investigate the effect of different treatment on ST-elevation myocardial infarction (STEMI) by evaluating the changes of myocardial collagen metabolism. Methods Forty-one patients with STEMI were divided into drug treatment group (22 cases) and selective percutaneous coronary intervention (PCI) group (19 cases). Meanwhile,47 healthy controls were included in control group. The levels of serum carboxy terminal propeptide of type Ⅰ procollagen (PⅠCP), precollagen Ⅲ ( PC Ⅲ ), matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of metalloproteinase-1 (TIMP-1) were measured by enzyme-linked immunosorbent assay at the 3rd ,6th, 12th, 18th month after STEMI,and compared with those in control group. Results The level of P Ⅰ CP in selective PCI group was significantly lower than that in drug treatment group at the 3rd, 6th month [( 15.08 ± 3.37 ) μ g/L vs. ( 19.78 ± 2.22 ) μ g/L, (23.88 ± 3.33 ) μg/Lvs. ( 30.00 ± 3.14) μ g/L, P ＜ 0.05], but there was no significant difference at the 12th and 18th month (P ＞0.05 ). The level of serum PC Ⅲ in selective PCI group was significantly lower than that in drug treatment group at the 3rd month [(50.70 ±4.83) ng/L vs. (59.91 ±4.64) ng/L,P ＜0.05],and there was no significant difference at others times between drug treatment group and selective PCI group. There was no significant difference in P Ⅰ CP/PC Ⅲ between drug treatment group and selective PCI group in all times(P ＞0.05). Compared with those in control group,the levels of serum MMP-1 in all times were significantly decreased in drug treatment group and selective PCI group(P ＜ 0.05 ), but there was no significant difference between drug treatment group and selective PCI group at same times (P ＞ 0.05). The level of serum TIMP-1was significantly higher in selective PCI group than that in drug treatment group at the 3rd and 6th month [(61.89 ± 11.44) μg/L vs. (52.23 ±4.97)μg/L, (62.85 ±6.31) μg/L vs. (52.97 ±6.43)μg/L,P＜0.05] ,and there was no significant difference in TIMP-1 between drug treatment group and selective PCI group in other times (P＞ 0.05). MMP-1/TIMP-1 in selective PCI group was significantly lower than that in drug treatment group at the 6th month [( 1.53 ± 0.25 )% vs. ( 1.95 ± 0.04)% ,P ＜ 0.05] ,and there was no significant difference in MMP-1/TIMP-1 between drug treatment group and selective PCI group in other times (P ＞0.05). Conclusions Selective PCI can improve myocardial collagen metabolism in patients with STEMI in short term ( ＜ 6 months), but it doesn't appear to be superior to drug treatment in long term (6 - 18 months). Patients with STEMI should enforce drug treatment if they have not been treated with PCI.

Objective To analyze the urodynamic data of the patients with benign prostatic hyperplasia(BPH)and provide evidence for the therapy.Methods 452 patients with BPH were selected.The mean age was(65.6 ±5.65)years(51 to 89 years).All patients had intact history documents which included the results of cystoscopy,urodynamics,doppler,DRE and PSA.Results 15 cases were not diagnosed with BOO.430 cases were diagnosed with BOO,among them,65 cases of bladder detrusor muscle weakness,bladder detrusor instability(detrusor,DI,instability)in 365 cases,3 cases were normal,and the other 4 cases had detrusor atony.In 445 patients the mean maximum urinary flow rate(8.32±3.15)ml/s,the average residual urine volume(87.68±79.46)ml,the average maximum flow rate when the detrusor pressure(62.32±7.54)cm H2O,maximum urethral closure pressure was(86.43±18.35)cmH2O,among which 19 cases were not suitable for surgery.At the end of the 426 patients underwent surgical treatment,postoperative follow-up of 3 to 18 months,the International Prostate Symptom Score(IPSS)from 0 to 5,the quality of life index(QOL)score of 0 to 1,Qmax 11 to 21 ml /s,residual urine(45.6±36.2)ml.There were significant differences between the preoperative and postoperative indexes(P<0.05).Conclusion Urodynamic tests can avoid the blindness in the surgery treatment of BPH.

Objective: To explore change of plasma endogenous hydrogen sulfide content before and after late open vasculature in patients with myocardial infarction and its significance. Methods: A total of 60 patients with primary myocardial infarction, who didn’t receive thrombolytic therapy and lesion locations had been confirmed by coronary angiography, were divided into group of successfully open after occlusion in proximal segment of left anterior descending artery (LAD group, n=20), group of successfully open after occlusion in proximal segment of right coronary artery (RCA group, n=20) and group of successfully open after occlusion in proximal segment of both above arteries (LAD + RCA group, n=20). Spectrophotometry method was used to measure concentration of endogenous H2S before and after open vasculature in all groups. Results: Compared with endogenous H2S level before open vasculature, there were significant increase in endogenous H2S level in LAD group [(24.44+3.27) μmol/L vs. (37.47+2.38) μmol/L], RCA group [(24.48+3.60) μmol/L vs. (37.22+2.56) μmol/L] and LAD + RCA group [(20.41+2.22) μmol/L vs. (30.34+2.37) μmol/L] after open vasculature, P<0.05 all. Conclusion: Concentration of endogenous hydrogen sulfide significantly increases after open vasculature in patients with myocardial infarction; it may be beneficial for prognosis of patients.

Objective To summarize the experience in prevention and treatment of bile duct injury during laparoscopic cholecysteclomy(LC). Methods Retrospective analysis on the clinical data of 31 cases of LC was carried out. Of them, 27 underwent one stage operative repair and 4 underwent palliative external drainage of the bile duct first. Results 16 cases succeeded and 11 failed in the one stage operative repairing.There were 15 cases underwent 2～4 operations in this series,and the re-operation rate was 48.4%. 29 patients was cured while 2 died. Conclusions During LC, the operative rule should always be strictly observed, and the key to preventing bile duct injury is to avoid clipping, cutting and coagulation blindly.

Objective To observe the clinical manifestation and pathological immunohistochemical features of intraspinal extramedullary peripheral primitive neuroeetodermal tumour (PNET). Methods From Apr. 1996 to Aug. 2007, totally 5 patients with intraspinal extramedullary peripheral PNET were treated, including 3 male and 2 female, aging from 11 to 48 years. The primary site was cervical vertebral in 2 (C5-C7 and C5-T1 ) and thoracic vertebral in 4( T4-T6, T6-T8 ,T4-T5 and C5-T1 ). The clinical manifestation was paresis of limbs in 5 and incontinence in 4. All the patients were pathologically diagnosed Results All of the three patients who had CD99 staining expressed CD99 ( + ). All the 5 patients received surgery followed by radiotherapy and 4 received postoperative chemotherapy. The most common treatment failure was local recurrence. The overall survival time of the 5 patients was 4.8year,2.5year,2. 1ycar, 1.6year and 0.8 year respectively. Conclusions Intraspinal extramedullary peripheral PNET is highly malignant tumor.Patients have very poor survival and local control New treatment protocol should be studied to improve the local disease control and increase remission rate. To distinguish central PNET from peripheral PNET has crucial significance since different entities have different treatment protocol and prognosis.