BACKGROUND:Studies have shown that suberoylanilide hydroxamic acid (SAHA) has protective effects in some vital organs in animals after hemorrhagic shock, and 7.5% hypertonic saline (HS) exerts significant effects on stabilizing the hemodynamics of hemorrhagic shock animals. OBJECTIVE:To evaluate the effect of SAHA combined with HS on the hemodynamics of hemorrhagic shock rats. METHODS: Fifty rats were randomly and equaly divided into five groups: sham, shock non-resuscitation, SAHA, 7.5% HS, and 7.5% HS + SAHA. Each group contained 10 rats. Except the sham group, rats in the remaining four groups were applied to establish hemorrhagic shock models. In the sham group, rats were given anesthesia catheter, not bleeding; in the shock non-resuscitation group, the bleeding was found, but rats were not resuscitated and were kiled after 60 minutes of observations; in the other three groups, rats were respectively resuscitated at 60 minutes after bleeding, through intravenous administration of SAHA within 5 minutes, 7.5% HS and SAHA + 7.5% HS within 20 minutes. Heart rate, mean arterial pressure and left ventricular systolic pressure were monitored through the femoral artery and the right common carotid artery catheter in each group. RESULTS AND CONCLUSION:At 3 hours after resuscitation, the heart rate was the highest in the 7.5% HS + SAHA group, compared with the SAHA and 7.5% HS groups (P < 0.05). After resuscitation, the mean arterial pressure and left ventricular systolic pressure were increased, with long-lasting effect and less fluctuation (P < 0.05). Experimental results show that 7.5% HS combined with SAHA has a superiority than traditional HS and simple drugs for resuscitation after hemorrhagic shock.

Objective To evaluate the role of haeme oxygenase-1 (HO-1) in remote limb ischemic preconditioning (RLIP)-induced attenuation of lung ischemia-reperfusion (I/R) injury in rabbits.Methods Twenty-four Japanese White Rabbits,aged 4-5 months,weighing 2.0-2.5 kg,were randomly divided into 4 groups (n =6 each) using a random number table:sham operation group (S group),I/R group,RLIP group and zinc protoporphyrin (ZnPP,an inhibitor of HO-1) plus RLIP group (ZnPP + RLIP group).Lung I/R was produced by 60 min occlusion of the left lung hilum followed by 180 min of reperfusion in I/R,RLIP and ZnPP + RLIP groups.RLIP and ZnPP + RLIP groups received 3 cycles of 10 min ischemia followed by 10 min reperfusion in the bilateral hind limbs immediately before occlusion of the left lung hilum.In ZnPP + RLIP group,ZnPP 10 μmol/kg was injected intravenously 10 min prior to hind limb ischemia and the rest of the procedures were similar to those previously described in RLIP group.At the end of reperfusion,arterial blood samples were collected for blood gas analysis.The animals were then sacrificed and pulmonary specimens were obtained for microscopic examination of the pathological changes which were scored (lung injury score,LIS) and for determination of wet/dry lung weight ratio (W/D ratio),myleoperoxidase (MPO) activity,malondialdehyde (MDA) content and expression and activity of HO-1 in the lung tissues.Results Compared with group S,PaO2 was significantly decreased,and LIS,W/D ratio,MPO activity,MDA content,and HO-1 expression and activity were increased in I/R group (P ＜ 0.01).Compared with I/R group,PaO2 and HO-1 expression and activity were significantly increased,and LIS,W/D ratio,MPO activity and MDA content were decreased in RLIP group (P ＜ 0.01).Compared with RLIP group,PaO2 and HO-1 expression and activity were significantly decreased,and LIS,W/D ratio,MPO activity and MDA content were increased in ZnPP + RLIP group (P ＜ 0.01).Conclusion RLIP up-regulates HO-1 expression and enhances HO-1 activity,thus reducing lung I/R injury in rabbits.

AIM: To investigate the effects of rosiglitazone(ROSI),an agonist of peroxisome proliferator-activated receptor ?(PPAR?),on the lung expression of intercellular adhesion molecule-1(ICAM-1) and cytokine-induced neutrophil chemoattractant(CINC) in rats with acute lung injury. METHODS: Thirty-six male Wistar rats were randomly divided into six groups: control group,ROSI group,GW9662(a PPAR? antagonist) group,lipopolysaccharide(LPS,6 mg/kg,iv) group,ROSI-LPS group(0.3 mg/kg ROSI iv 30 min prior to LPS) and GW9662-ROSI-LPS group(0.3 mg/kg GW9662,iv,20 min before ROSI).Four hours after LPS injection,wet/dry weight(W/D) ratio,myeloperoxidase (MPO) activity,malondialdehyde(MDA) and CINC-1 concentrations were assayed in the lung tissues.Immunohistochemical analysis of ICAM-1 expression was also studied.RESULTS: Pretreatment with ROSI significantly attenuated LPS-induced increases in W/D ratio,MPO activity,MDA and CINC-1 concentrations as well as ICAM-1 expression in the lung tissues.The specific PPAR? antagonist GW9662 antagonized the effects of ROSI.CONCLUSION: Pretreatment with ROSI reduces LPS-induced lung injury in rats.The mechanism involves inhibition of the lung expression of ICAM-1 and CINC-1 by the activation of PPAR?.

Objective: To study the clinicopathological characteristics，diagnosis，multiple modality therapy and prognosis of accessory breast cancer. Methods: Clinical data of 38 patients with accessory breast cancer seen in our hospital between October 1985 and November 2007. Results: The 38 cases of accessory breast cancer accounted for 0.15% of all 26,078 breast cancer cases during the same period.Six patients of stage Ⅰ and 3 patients of stage Ⅱ underwent breast-conserving local wide excision of the tumor plus axillary lymph node dissection,with the resection margins pathologically negative.The other 9 cases of stage Ⅱ patients were treated with Auchincloss mastectomy.Stage Ⅲ and stage Ⅳ patients were treated with Auchincloss or Halsted mastectomy.The most common histological type of accessory breast cancer was infiltrating ductal Carcinoma for 18 patients(47.4%)，of which 3 cases were associated with adenoma of the nipple tube.There were 6 cases of carcinoma simplex，6 cases of intraductal Carcinoma，3 cases of adenocarcinoma with focal squamous cancer cells differentiation，3 cases of medullary carcinoma，and 2 cases of mucinous adenocarcinoma.The most common pathological stages(according to AJCC staging of breast cancer,2002.6th edition)were stage Ⅱ and Ⅲ in 12 cases(31.6%)，stage Ⅰ in 6 cases，and stage Ⅳ in 8 cases.All patients were followed-up for 1 to 23 years.The median follow-up time was 6 years and 7 months，and the follow-up rate was 100%.Until November 2008，12 patients died of metastasis and the other 26 patients were still alive.The 5-year overall survival rate was 35.3%.significantly lower than that of breast cancer patients(66.8%).The 3-year survival rate was 77.8%.The 5-year disease free survivaI rate was 28.6%and the 3-year disease free survival rate was 63.6%. Conclusion: Accessory breast cancer is rarely seen but is aggressive.The diagnosis mainly depends on clinical characteristics，postoperative pathology and imaging examinations.Early diagnosis is essential.Surgery combined with other adjuvant therapies can improve patient survival.

To explore new agents of quinolone derivatives with high antibacterial activity, 7-(4-alkoxyimino-3-methyl-3-methylaminopiperidin-1-yl)quinolones were designed and synthesized, and their activity against gram-positive and gram-negative strains was tested in vitro. Sixteen target compounds were obtained. Their structures were established by 1H NMR, HRMS and X-ray crystallographic analysis. Compounds 14k and 14m-14o show good antibacterial activity against the tested five gram-positive strains and five gram-negative strains (MIC: 0.25-16 micromg x mL(-1)), of which the most active compound 14o is 8-fold more potent than levofloxacin against S. pneumoniae (MIC: 4 microg x mL(-1)), and comparable to levofloxacin against S. aureus, S. epidermidis, E. faecalis and E. coli (MIC: 0.25-1 microg x mL(-1)), but generally less potent than gemifloxacin.

Objective To investigate the effect of surfactant protein D(SP-D)overexpression on lipopolysaccharide(LPS)-induced monocyte chemoattractant protein-1(MCP-1)expression in human renal proximal tubular epithelial cells(HK-2)and its mechanism. Methods HK-2 cells were treated with LPS at various concentrations (0, 0.1, 1, 2, 5, 10 mg/L)for 8 h and at 5 mg/L for various time points(0, 2, 4, 8, 16, 24 h). Expression of SP-D was detected by Western blotting and real-time PCR. Expression of MCP-1 was determined by ELISA and real-time PCR. Human SP-D cDNA eukaryotic expression vector pEE14-hSP-D was transfected to HK-2 cells. The changes in transfected cells of SP-D protein were observed by Western blotting. Expression of MCP-1 was detected by ELJSA and real-time PCR. Results SP-D was expressed in HK-2 cells. The levels of SP-D protein and mRNA in HK-2 cells were significantly decreased after treatment with LPS(P<0.05). Expression of MCP-1 protein and mRNA was increased remarkably after treatment with LPS(P<0.05). HK-2 cells transfected with pEE14-hSP-D showed up-regulated expression of SP-D. The overexpression of SP-D inhibited the LPS-inducedexpression of MCP-1(P<0.01). Conclusions SP-D inhibits LPS-induced expression of MCP-1 in HK-2 cells. SP-D may play an important role in the modulation of renal inflammation.

Objective: To observe left and right ventricular mechanical sequence in systole and diastole by dual Doppler Echocardiography in healthy subjects. Methods: Dual Doppler echocardiography was performed in 100 normal subjects with dual-outflow-tract-view and apical four chamber view to simultaneously record the spectrum of left/right ventricular outlfow tract (LVOT)/(RVOT) and left/right ventricular inlfow tract (LVIT)/(RVIT) at the same cardiac cycle. The time cycles of blood lfow spectrum from the peak of QRS complex to aorta, pulmonary artery, mitral valve (MV) and tricuspid valve (TV) were measured, the starting time differences for blood lfow spectrum of aorta and pulmonary artery, MV and TV were calculated to assess the mechanical sequence of left and right ventricle in systole and diastole respectively. Results: There were 48/100 (48%) subjects having LV ejection preceded than RV (95% CI 0.38-0.58), 46 (46%) having RV ejection preceded than LV (95% CI 0.36-0.56) and 6 (6%) having LV, RV simultaneous ejection (95% CI 0.01-0.11). There were 96/100 (96%) subjects having RV iflling prior to LV (95% CI 0.90-0.99), 3 (3%) having LV iflling prior to RV (95% CI 0.01-0.08) and 1 (1%) having LV, RV simultaneous iflling (95% CI 0.00-0.05). Conclusion: There is a regular pattern for mechanical sequence of LV and RV in systole and diastole in healthy subject; in systole, the sequence of LV varies from person to person, while in diastole, RV is always preceded. Based on normal ventricular mechanical sequence, optimizing programming parameter of pace maker and choosing cardiac sequence in diastole might be the ifnal criteria for cardiac resynchronization therapy in the future.

Objective To investigate the effects of remote preconditioning on inflammatory cytokines and respiratory index of rabbit lung injured by ischemia/reperfusion.Methods Eighteen rabbits were randomly divided into three groups(6 each):control group(C),ischemia-reperfusion group(I/R)and remote preconditioning group(R).The plasma concentrations of interleukin-6(IL-6),tumor necrosis factor-?(TNF-?)and interleukin-10(IL-10)were measured before ischemia and 60,120 and 180 min after reperfusion.Respiratory index(A-aO2/PaO2)was calculated before ischemia and 15,30,60,120 and 180 min after reperfusion.The animals were sacrificed after reperfusion,and the left lung was removed for calculation of wet/dry(W/D)ratio and lung permeability index,histological examination was done with light microscope,and diffuse alveolar damage(DAD)scores was estimated.Results The plasma concentrations of IL-6 and TNF-? were significantly higher in I/R group than in C group(P

To study the effect of Buyang Huanwu Decoction (BHD) on neural cell apoptosis after cerebral ischemia in gerbils and its mechanism, gerbil model with cerebral ischemia was established by clamping of bilateral carotid arteries and then reperfusion. Neural cell apoptosis of hippocampal gyrus slides was observed under electron microscope 120 hours after reperfusion. The activities of Na + -K + ATPase , Ca 2+ ATPase , Mg 2+ ATPase and NOS, and the contents of lactic acid, NO and amino acid in cerebral tissues were detected 120 hours after reperfusion. The results showed that BHD can reduce the incidence of neural cell apoptosis of hippocampal gyrus, prevent the decrease of Na + -K + ATPase and Ca 2+ ATPase activities, increase NO content and NOS activity, and reduce cerebral glucose content. It is indicated that BHD can counteract neural cell apoptosis after cerebral ischemia in gerbils and its mechanism may be related to the improvement of cerebral energy metabolism, regulation of NO synthesis and antagonism of toxic effect of excitatory amino acid.

Objective Applying color Doppler ultrasonic test on the first dorsal metatarsal arteries,to acquire relevant Doppler bloodstream parameters,and in the end,to explore the clinical value of this approach.Methods Applying GE-LOGIQ-400 color Doppler high-frequency ultrasonic test on the first dorsal metatarsal arteries of 100 diabetes patients,contrasting to those of 60 normal persons,observing the origination,trend,smooth of bloodstream,angioplerosis Status,analyzing bloodstream spectrum(including the interior diameter of blood vessel,spectrum status,bloodstream speed,drag index,erc.),and contrasting the resuits.Results The first dorsal metatarsal arteries of diabetes patients have narrower interior diameter,faster bloodstream speed,higher drag index than those of non-diabetes patients.Conclusion The high-frequency color Doppler ultrasonography can provide objective clinical evidence on the test of the first dorsal metatarsal arteries diseases.