Objective To observe the chronic hepatotoxicity of the commonly used herbicide mixture in the mice. Methods Low doses herbicide mixture diluted in mice drinking water. The parameters related to hepatic function and ultrastructural changes of the hepatocytes were examined after 18 weeks and 24 weeks of treatment. Results No changes was observed in every parameter after 18 weeks of treatment compared with the control group. After 24-week of treatment, the electron microscope revealed the ultrastructural changes in the hepatocytes, rough endoplasmic reticulum showed dilatation, mitochondria showed matrix muddy with distortion and disappearance of inner crista and the serum transaminase were higher than those in the control group(P

Objective To evaluate the myocardial protective effects of thoracic epidural anesthesia (TEA) with 0 5% ropivacaine during acute myocardial ischemia reperfusion Methods Eighteen healthy hybrid dogs were randomly divided into three groups: ropivacaine group (group Ⅰ), bupivacaine group (group Ⅱa) and normal saline group (group Ⅱb) Anesthesia was induced and maintained with intravenous anesthesia and ventilation was mechanically controlled Epidural catheter was placed at T 6 7 and 0 5% ropivacaine, 0 5% bupivacaine or normal saline 12ml was administered epidurally 15min after epidural administration of local anesthetics or normal saline, the anterior descending branch of left coronary artery was temporarilly occluded for 45min Blood samples were taken from right atrium and assayed for cardiac troponin T (cTnT) before epidural administration and 6h after reperfusion Myocardial tissues of left ventricular infarction area were examined by electron microscopy Results Plasma cTnT levels were comparable (P

0.05).Conclusion Performing leukapheresis and plateletpheresis sequencially with a single Apheresis Kit is a safe,effective,practicable and economic method in the treatment of chronic myeloid leukemia with leukocytosis and thrombocytosis.It can drop the medical expanse markedly.

Objective To observe the changes of specific proteins in serum of acute stage patients with SARS and its clinical application. Methods The acute stage patients with SARS group included 42 cases who had clinical symptoms less than five days. In normal group: 30 healthy adults were as controls. Tests for specific proteins were immunoglobin G ( IgG ) , immunoglobin A ( IgA) , immunoglobin M ( IgM) , complement C3( C3),complement C4(C4),C-reaction protein (CRP), al acid glycoprotein( a1-AG) , a1 antitrypsin(a1-AT) ,transferrin(TRF), ceruloplasmin( CER) in sera by Ratenephelometer. Results The level of CRP, a1-AG, a1-AT in sera of patients with SARS were higher than that in control group ( P 0. 05). Conclusion It suggested that specific proteins in serum of acute stage patients with SARS change in a particular way. There were some help for the diagnosis of the phlogistic degree of acute stage patients with SARS by detecting CRP, a1-AG and TRF simultaneously.

OBJECTIVE To analyze the reason of hospital infection by meticillin-resistant Staphylococcus aureus(MRSA) popular on the wound surface in burn wards at a hospital located in South China.The methods of prevention and control were discussed.METHODS The MRSA infections on the surface of a wound of patients in burn wards were reviewed and analyzed from Sep 20,2005 to Sep 30,2005.The occurred reasons,distributed characteristics and drug resistance were carried out on the analysis.RESULTS There were 6 cases of MRSA infection on the injured area,from them 4 with third-degree burn,and 2 with moderate burn.The patients were cured completely.There was no blood stream MRSA infection.Vancomycin was used to treat.The fulminant epidemic of MRSA infection in the injured area was related with environment pollution and cross infection caused by the imprecise aseptic operation.CONCLUSIONS The injured area of burn patient is infected by MRSA.which often has strong drug resistance,but the vancomycin is effective.The environment disinfection is important.Medical personnel's standardized aseptic operation should be strengthened.The reasonable use of antibiotics can avoid the cross infection.It is the important method to prevent and control the fulminant epidemic.

Purpose To evaluate the correlation between neovascularization in femoral artery plaque and cerebral infarction by using contrast enhanced ultrasound,and to assess the predictive value of femoral artery plaque stability in cerebral infarction and its clinical significance.Materials and Methods Sixty-two patients with femoral artery hypoechoic plaques were retrospectively studied.The patients were divided into cerebral infarction group and control group,and all of them underwent two-dimensional ultrasound and contrast enhanced ultrasound.The parameters such as the maximum thickness,the stenosis rate of cross-sectional area,the enhanced intensity (EI),the area under the curve (AUC) and the grading of the neovascularization in the plaque were detected and compared.Results The EI and AUC of the cerebral infarction group were higher than those of the control group,the differences were statistically significant (P＜0.05).Many grade Ⅲ and Ⅳ neovascularizations were found in cerebral infarction group,while the grade Ⅰ and Ⅱ neovascularizations were mostly in the control group,the difference between the two groups was statistically significant (P＜0.05).There were no significant differences in the maximum thickness and stenosis rate of cross-sectional area between the two groups (P＞0.05).The neovascularization grade,EI and AUC in the plaque were positively correlated with cerebral infarction (r=0.331,0.416 and 0.410,P＜0.05).Conclusion ① The chara-cteristics of femoral artery hypoechoic plaques in patients with cerebral infarction are rich of neovascularization and instable by using contrast-enhanced ultrasonic imaging.② The neovascularization of femoral artery hypoechoic plaque has positive correlation with cerebral infarction,which may provide a new method for clinical prediction and prevention of intracranial atherosclerosis.

Objective To compare the efficacy and complications of the two surgical methods (between type Ⅰ hysterectomy and type Ⅱ hysterectomy),and to explore the feasibility of type Ⅰ hysterectomy in stage ⅠA cervical cancer.Methods The study group,92 cases(48 cases of stage ⅠA1,44 cases of stage ⅠA2) were performed with type Ⅰ hysterectomy plus selective pelvic lymph node dissection;the control group,93 cases (49 cases of stage ⅠA1,44 cases of ⅠA2) were performed with type Ⅱ hysterectomy plus selective pelvic lymph node dissection.Results The survival rate of 5 years and 10 years in study group were 100 ％ (92/92),100 ％ (74/74) and that in control group were 100 ％ (93/93),100 ％(66/66),respectively.There were no signicant difference between the two group (both P ＞ 0.05).When compared with the control group,the urinary tract infection of the study group was significantly reduced (0 versus 13.99 ％,P ＜ 0.05).Moreover,there were a shorter surgical duration [(96.14±17.20) min vs (116.82±16.30) min].The hemorrhage [(117.35±39.61) ml] and blood transfusion (0 ml) in study group was less common than those in control group [(201.74±46.25) ml,(82.07±16.32) ml] (all P ＜ 0.01).Conclusion There are no difference of 5-year and l0-year survival rate in stage ⅠA patients with type Ⅰ or type Ⅱ hysterectomy,however,the rate of the postoperative urinary tract infection in the former is lower than that in the latter,and also there are a shorter surgical duration,less hemorrhage and reduced blood transfusion requirements in study group.Therefore,type Ⅰ hysterectomy can be effective and applicable for the patients of stage ⅠA cervical cancer.

AIM: To investigate the changes of the renal L-arginine /nitric oxide pathway and the relationship of L-arginine transport between kidney and erythrocytes in spontaneously hypertensive rat (SHR). METHODS: Sixteen week old SHR, 16 week old SHR with captopril (CAP) treated for four weeks and 16 week old WKY rats were used in the experiment. L-arginine transport, NO synthase(NOS) activity, nitrite and cyclic GMP (cGMP) content were measured in renal tissue or erythrocytes. RESULTS: In the renal tissue, compared with that of WKY group, the Vmax of high-or low-affinity L-arginine transporter, NOS activity, NO - 2 and cGMP content of SHR group were significantly decreased ( P

Objective To explore the effects of cotransplantation with osteoblasts on hematopoietic reconstitution in mice after bone marrow transplantation (BMT). Methods The typical model of syngeneic BMT was established. 18 Balb/c mice were used to prepare the bone marrow nuclear cells and osteoblasts for BMT. The 42 Balb/c mice were randomly divided into 3 group:normal group (6 mice, without any treatment), the single BMT group ( 18 mice, given 2 × 106 bone marrow nuclear cells/each mouse) and the cotransplantation group of HSC with osteoblaats (18 mice,given 2 × 106 bone marrow nuclear cells and osteoblasts/each mouse). The following factors were measured on day 7, 14, 21 after BMT: peripheral blood cells, bone marrow mononuclear cells (BMMNC), the percentage of CD34+ cells in BMMNC (assayed by flow cytometry), the hematopoietic tissue changes (detected by HPIAS-1000 image analysis system) and micro vascular density (MVD) of bone marrow tissue (with immunohistochemistry). Results The levels of periphral WBC, RBC, PLT, BMMNC in the contransplantation group were higher than those in the single BMT group (P＜0. 01 or P＜0. 05). In the contransplantation group, the percentage of CD34+ cells in BMMNC, the hematopoietic tissue area and the MVD of bone marrow were also higher than the single BMT group on the 7th, 14th, 21st day after BMT(P＜0.01 or P＜0.05). Conclusion Cotransplantation with osteoblasts could significantly promote hematopoietic reconstruction in mice after BMT. Cotransplantation may represent a promising means of achieving higher engraftment rate after BMT.