Objective To study the effects of hypertonic sodium chloride hydroxyethyl starch(HSH), blood flow of microcirculation (IMMBF) in Sprague-Dawley(SD) rats. Methods Sixty healthy SD rats were included in the study, 6 of which were used as normal control and their IMMBF was regarded as the baseline. Fifty-four rats were subjected to hemorrhagic shock with BP of 40mmHg for 60min, Among these 54 rats, IMMBF was measured in 6, without resuscitation. In 24 shock rats, HSH was given in a dose of 6ml/kg as the HSH group, and in 24 shock rats lactated Ringer solution (RL) was given in a volume twice of volume of blood loss as the RL group. At 90, 120, 180 and 300 minutes after shock, their IMMBF was measured, and specimens of their intestinal wall were harvested for pathological examination. Results The results showed that IMMBF baseline level of SD rats was 110.67?11.63mV. It was decreased to 25.78?10.77mV after shock for 60 minutes. The IMMBF in HSH group was 103.22?7.96, 92.50?14.47, 86.17?10.35 and 122.33?8.30mV at the 4 time points, respectively, the IMMBF in RL group was 61.89?6.41, 64.95?12.94, 63.42?6.46 and 86.50?13.51mV, respectively the difference between the two groups at every time point was significant with P value

Objective: To explore the clinical value of transvaginal ultrasonography in diagnosis of ruptured ovarian cyst. Methods:Retrospective analysis the 46 cases of ruptured ovarian cyst diagnosis by transvginal ultrasonography in our hospital which confirmed by surgery and pathology. Results: In the among 46 cases, 39 cases were the corpus luteum cyst, 14 cases were the endometriotic cyst, were all confirmed by surgery and pathology, the diagnostic accurate rate of corpus luteum cyst is 92.3%, the rate of endometriotic cyst is 57.1%. Conclusion:Transvaginal ultrasonography is accurate, rapid and convenient, provides the reliable basis for the diagnose and different diagnose acute abdominal disease.

AIM:Many studies have documented an anabolic effect of hydroxymethylglutaryl coenzyme A (HMG-CoA) reductase inhibitors, statins, on undisturbed bone. Reports of their effects on fractured skeleton were limited. A study was therefore conducted to check the effects of statins on fracture healing. METHODS: Simvastatin (10 mg?kg-1?d-1) was injected subcutaneously to tissue overlying the site of fractured tibiae of ovariectomized rats for a treatment period of 5 d. Vehicle reagent was used as control. Healing quality was evaluated at 1, 2 and 4 weeks after fracture. RESULTS: Compared with vehicle group, callus cross section area in simvastatin treated rats were significantly enlarged by 21.3% (P

Objective The beam data is compared with those obtained from Monte Carlo (MC)simulation and measurement to investigate their feasibility and reliability for X-ray small fields.MethodsThe beam data,including the total scatter factor (Scp),percentage depth dose (PDD) was acquired byneasurement and calculation with the field size ranging from 0.5 cm × 0.5 cm to 10 cm x 10 cm.The resultswere compared and analyzed.Results All the data is most consistent for the fields size of ≥3.5 cmx 3.5cm,but they are obvious different for the fields size of ≤ 3.0 cm × 3.0 cm.The measurements seem toreliable using the chambers of CC04 and CC13 for the fields size of ≥2.0 cm x 2.0 cm.Conclusions It isdemonstrated that the accurate measurements and calculations of Scp and PDD can be obtained for the fieldssize of ≥2.0 cm ×2.0 cm,but they needed morc rcscarchcs for thc smaller fields.

Objective To identify the risk factors of adverse pregnancy outcomes in expectant management of pregnant women with early onset severe pre-eclampsia (EOSP). Methods Totally, 136 gravidas, who were diagnosed as ESOP and received expectant management from January 2007 to June 2008 in Beijing Obstetrics and Gynecology Hospital, were selected and divided into two groups; the favorable pregnancy outcome group (control, n=101)and the adverse pregnancy outcome group (n=35).The general clinical information, pregnancy outcomes, routine urine test, hemodynamic data, routine blood test, liver and renal function test on admission were collected and the risk factors for adverse outcomes were retrospectively analyzed.Results (1)General clinical information; more women complained of preeclamptic symptoms on admission in the adverse outcome group than in the control group (35.6% vs.57.1 %,P< 0.05).No significant differences was found between the two groups in the maternal age, times of previous pregnancies, prevalence of concurrent complications, pre-pregnant body mass index (BMI),proportion of women who had regular antenatal checks(P > 0.05).(2) Pregnant outcomes; the average duration of expectant management in the control group were similar to the adverse outcomes group [(6.5 ± 8.2) days vs.(6.8 ±10.0) days, P > 0.05].The main complications in the adverse outcome group included placental abruption (n=13), heart failure and pulmonary edema (n=10),hemolysis, elevated liver enzymes and low platelet syndrome (HELIP syndrome, n=5),and no eclampsia was reported.However, none of these complications was reported from the control group.(3)Blood pressure and proteinuria; the gestation ages at the onset of EOSP and at delivery in the control group were earlier than those of the adverse outcome group [(31.3 ± 3.4) weeks vs.(33.0 ± 4.9) weeks, (32.1 ± 3.0) weeks vs.(34.0 ± 3.6) weeks, P< 0.05],the systolic blood pressure and urinary protein and the proportion of women with urinary protein of (+ + +)were also much higher in the adverse outcome group (all P<0.05).(4) Hemodynamics and routine blood tests; the blood viscosity in the control group was obviously lower than that of the adverse outcome group (P< 0.05 ).But there was no significant difference in the cardiac output, cardiac index, peripheral resistance and vascular compliance between the two groups (P >0.05).The adverse outcome group showed lower platelet(PLT) level and higher red blood cell(RBC) count and hematocrit compared with those of the control(all P<0.01).(5)Liver and renal function; the alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH),blood urea nitrogen(BUN) in the adverse outcome group were significantly higher than those of the control group (all P<0.05), but the plasma level of total protein (TP),albumin (Alb), uric acid (UA) and creatinine (Cr) were similar between the two groups(P>0.05).(6) Risk factor analysis: RBC count (OR =3.68, 95% CI: 1.90-7.13 ),PLT count (OR=0.99,95% CI:0.98-1.00) and the gestations at delivery (OR=0.87, 95% CI: 0.80-0.94) were the risk factors of adverse pregnancy outcomes during the expectant management of EOSP.Conclusion Elevated RBC count, reduced PLT count and earlier delivery weeks are the risk factors of adverse pregnancy outcomes during the expectant management of EOSP.

Objective To explore the effect of TGF-β microbubble targeting on the treatment of skeletal muscle injury in rats.MethodsEighty SD rats of 2 months old were randomly divided into experimental group(including TGF-β microbubble),pure drug group,microbubble group(exclusive drug) and control group,20 SD rats in each group.Four groups accepted ultrasonic transmission with consistent time and frequency.The contraction stress and stress relaxation of injured gastrocnemius muscle were measured,the changes of injured gastrocnemius muscle were observed by light microscope and electron microscope.Results There was no statistically significant difference in contraction stress of gastrocnemius muscle among all groups at 1,5,9 days after injury(P>0.05).And at 14 days,the contraction stress of gastrocnemius muscle of the experimental group and the pure drug group were obviously higher than those of the rest two groups,the differences were significant(P<0.05).The difference of gastrocnemius muscle contraction stress was statistically significant between the experimental group and the pure drug group(P<0.05).For the stress relaxation of gastrocnemius muscle,the experimental group was lower than the other three groups at 1 day after injury,the differences were significant(P<0.05).Light microscopy showed the number of muscle fiber in the experimental group increased obviously at 9 days after injury.There was no scarring at 14 days after injury.Electron microscope showed mitochondria and sarcoplasmic reticulum increased in the experimental group,and the new muscle cells and satellite cells were significantly more than those of the rest three groups.Conclusion TGF-β cell targeted therapy can obviously improve the shrinkage stress of skeletal muscle in rats after injury and recover the stress decay,which can obviously promote the injury repair and regeneration of skeletal muscle,and reduce scar formation at the same time.

Objective: To explore clinical features of acute myocardial infarction (AMI) caused by left main (LM) coronary artery lesions and to study the effect of percutaneous coronary intervention (PCI) in relevant patients. Methods: A total of 3514 AMI patients received coronary angiography (CAG) in our hospital from 2000-01 to 2015-12 were studied, those including 36 of infarct-related artery (IRA) as LM. There were 28/36 patients received PCI and 8 received CABG. The clinical features and outcomes in 28 LM disease patients were investigated. Results: The patients included 5 female and 23 male at the mean age of (66.5±8.32) years. There were 16 patients with ST-segment elevation myocardial infarction (STEMI) and 12 with NSTEMI; 21 received primary PCI and 7 had elective PCI; there were 16 patients suffered from cardiac shock at admission. The procedural success rate was 82.1% and the in-hospital mortality was 35.7% (10/28). During (66.1±35.2) months follow-up period, 3 patients had re-NSTEMI and 1 of them received PCI again, 3 patients died. No event survival rate was 66.7%. Conclusion: PCI is feasible for treating AMI patients caused by LM lesions, the in-hospital survival rate was 64.3%; while the MACE occurrence rate during long-term follow-up period has been high.

Objective To explore the feasibility and safety of laparoscopic total colectomy for familial adenomatous polyposis. Methods All 9 patients with familial adenomatous polyposis received laparoscopic total colectomy were analyzed. Results Laparoscopic total colecto-my was successfully performed in all the 9 patients. The operative time,blood loss,flatus and hospitalization were respectively 230~310 min, 80~210 mL,2~3 days and 12~14 days. All patients were followed up for 6~36 months. The postoperative recovery was good. Conclusion Total colectomy can be successfully perfomed with laparoscopic assisted in treating familial adenomatous poliposis. It is a feasible and safe surgical procedure and can significantly improve the quality life.

BACKGROUND: The formation of long-term memory includes acquisition, consolidation and reconsolidation. Reconsolidation is very important for the new memory transforming into stable memory. Stress is an important environmental factor in the process of learning and memory. Corticosterone is very important for stress response. At present, research about the impact of corticosterone on reconsolidation of novel object recognition memory is less. Thus, it is very important to test the impact of corticosterone on reconsolidation of novel object recognition memory in rats.
OBJECTIVE: To analyze the effects of corticosterone on the reconsolidation of novel object recognition memory in rats.
METHODS: (1) The rats were intraperitoneal y injected with corticosterone (0.1, 1 and 3 mg/kg) immediately after reactivation. The discrimination index was used to assess memory performance and calculated as the difference in time exploring the novel and familiar objects. (2) The rats were intraperitoneal y injected with corticosterone (3 mg/kg) 6 hours after reactivation. The discrimination index was used to assess memory performance and calculated as the difference in time exploring the novel and familiar objects. (3) The rats were intraperitoneal y injected with corticosterone 3 mg/kg without reactivation. The discrimination index was used to assess memory performance and calculated as the difference in time exploring the novel and familiar objects.
RESULTS AND CONCLUSION: Immediate injection of corticosterone 3 mg/kg after reactivation significantly decreased the discrimination index. At 6 hours after reactivation or without reactivation, corticosterone administration did not impact the discrimination index. These results confirmed that corticosterone administration immediately after reactivation impairs the reconsolidation of novel object recognition memory. The damage effect depends on the reactivation experience and the specific time window after reactivation.

The expression, amplification and rearrangement of c-myc and c-erbB-2 genes in thyroid tumor were studied. 32P-dATP-labelled probes of c-myc, c-erbB-2 and v-sis DNA fragments were used to hybridise with the cellular total RNA. We found that c-myc and c-erbB-2 oncogenes were expressed in all samples. The levels of c-myc RNA were three-to eleven-fold higher in 9 out of 15 cancer samples when compared with that in normal tissues. In 7 of 15 cancer samples, c-erbB-2 gene was overexpressed 10~50 times higher than normal. No v-sis RNA was detected in all the samples. Southern blot hybridisation showed that rearrangement of c-myc oncogene were observed in 4 cancer samples, of which one showed a 150-fold amplification of c-myc gene. No amplification or rearrangement of c-erbB-2 gene was detected. These data indicate that the activat.:on of c-myc and c-erbB-2 oncogenes may contribute to the development and/or maintenance of the malignant phenotype of the thyroid carcinomas.