Objective To investigate the effect of dexmedetomidine on the outcome of rats with acute lung injury following blunt chest trauma.Method Forty male SD rats weighing 250～300 g were randomly (random number)divided into 5 groups(n=8 each),namely,group C(normal),group D(normal plus dexmedetomidine),group T(trauma),group TD(trauma plus dexmedetomidine),group TDY(trauma plus dexmedetomidine plus yohimbine).Au rats were sacrificed by using exsanguination from arteria femoralis 6 hours later.The TNF-α and IL-1β levels in plasma were examined by using ELISA.Lung wet/dry(W/D)weight and the percentage of neutrophil in leucocytes in bronehoalveolar lavage fluid(BALF)of rats were detected.HE staining was performed to observe the injury of lung tissue under microscope.Results There was significant lung injury after blunt chest trauma.The serum concentrations of TNF-α and IL-1β,PMN%and lung wet/dry(W/D)weight were significantly higher in traumatic group(P<0.05,P<0.01).chest trauma,but this protective effect of dexmedetomidine could be blocked by yohimbine,at least in part,via the inhibition of α2-adrenergie receptor.Conclusions Dexmedetomidine has a certain protective effect on acute traumatic acute lung injury in rats.

Objective To compare the changes of serum levels of heme oxygenase‐1(HO‐1) ,C‐reactive protein(CRP) and Chitinase‐3‐1ike protein 1(YKL‐40) in patients with rectal cancer after laparoscopic‐assisted radical operation versus open radical surgery .Methods According the integration and elimination standard ,60 cases of patients with rectal cancer were selected and di‐vided into laparoscopic group (30 cases) and open group (30 cases) ,the concentrations of HO‐1 ,YKL‐40 and CRP in peripheral blood of patients were detected on the first and third postoperative day and preoperative day(P<0 .05) ,and were compared between the two groups .Results The serum levels of HO‐1 ,YKL‐40 and CRP in the laparoscopic group were significantly lower than those in the open group on the first and third postoperative day(P<0 .05) .The serum levels of HO‐1 ,YKL‐40 and CRP were significant‐ly increased after surgery ,and serum levels of HO‐1 and CRP on third postoperative day were significantly increased compared with that on the first postoperative day in the two groups after surgery ,while serum level of YKL‐40 on the third postoperative day was significantly lower than that on the first postoperative day in the two groups after surgery .Conclusion The stress reaction is com‐paratively mild in patients with rectal cancer after laparoscopic assisted radical operation ,and the postoperative period may be shor‐ter in patients treated with laparoscopic assisted radical operation than those treated with open radical surgery .

With the development of technology,automatic management system Controlled by co mputer is necessary in hospitals Building a bank of mycobacterium and their gen ome is a great step to this aim It can make it easier to get the mycobacterium data than before,furthermore,it is helpful for further research for doctors to m ake a new treatment plan for the patients

Objective To study the effect of different iodine nutrition on thyroid function in adult and pregnant women.Methods A random sampling method was used to select healthy adult and pregnant woman from the communities of coastal city,coastal rural and inland rural areas in Liaoning Province.Drinking water,urine and salt samples were collected to measured urinary iodine (U I),salt iodine (SI) and water iodine content.Fasting venous blood was collected to measured thyroid stimulate hormone (TSH),freethyroxine (FT4),free triiodothyronine (FT3),thyroglobulin antibody (TgAb) and thyroid peroxidase antibody (TPOAb) with the method of immunoassay chemical luminescence.Results A total of 150 salt samples were collected,means of SI was (30.1 ± 6.0)mg/kg.A total of 72 pregnant woman and 271 adults were investigated in iodized salt supplied regions.median UI of pregnant woman and adults were 176.3,203.2 μg/L.Iodine nutrition of pregnant women and coastal region adults was in an adequate level.Means of SI of inland adults(244.4 μg/L) was higher than appropriate level but not reached the excessive level.FT4 of the adults (11.7 pmol/L) and pregnant women (10.7 pmol/L) in inland regions were slightly higher than that of coastal city,rural adults(11.2,8.6 pmol/L) and pregnant women (10.9,9.6 pmol/L).TSH,FT3 and FT4 were not statistically different between regions (all P ＜ 0.05).But UI,FT4 and FT3 levels of pregnant women(176.3 μg/L,9.5 pmol/L,4.3 pmol/L) were significantly lower than that of the adults(203.2 pμg/L,11.3 pmol/L,4.7 pmol/L,all P ＜ 0.05).Hypothyroxinemia(4.4％,10/173) was higher than that of the inland adults (2.0％,2/98,P ＜ 0.05).And all hypothyroxinemia were found in women of childbearing age.Hypothyroxinemia prevalence of pregnant women(16.7％,12/72) was higher than that of adults(4.4％,12/271,P ＜ 0.05),The prevalence of hypothyroidism,hyperthyroidism and subclinical hyperthyroidism between the 3 regions adults and pregnant women were not statistically different (all P ＞ 0.05).Conclusions Under appropriate supply conditions of iodized salt,iodine nutrition and thyroid function are closely related.Pregnant women and women of childbearing age are at risk of iodine deficiency.The thyroid function of these people should be strengthen detect.

Objective To investigate the effects of penehyclidine hydrochloride (PHCD) on acute lung injury (ALI) induced by blunt chest trauma and Toll-like receptor 4 (TLR4) expression in the lung tissues in rats.Methods Ninety-six male SD rats weighing 250-300 g were randomly divided into 3 groups ( n = 32 each):control group (group C), ALI group and PHCD group. ALI was induced by dropping a 300 g weight onto a precordial protective shield to direct the impact force away from the heart and toward the lungs in anesthetized rats according to the method described by Raghavendran et al. PHCD 2 mg/kg was injected intraperitoneally immediately after ALI was induced in group PHCD. Eight rats were selected at 2, 8, 12 and 24 h after ALI was induced, and arterial blood samples were collected for determination of the serum TNF-α concentration. Eight rats were selected at 8 h after ALI was induced, arterial blood samples collected for blood gas analysis and then the rats sacrificed. The lungs were immediately removed for determination of W/D lung weight ratio, myeloperoxidase (MPO) activity and TLR4 expression, and microscopic examination. Results The pH value and PaO2 were significantly lower, and the PaCO2, lactic acid level, MPO activity, W/D ratio, TLR4 expression and serum TNF-α concentration higher in groups ALI and PHCD than in group C (P ＜ 0.01 ). The pH value and PaO2 were significantly higher, and the PaCO2, lactic acid level, MPO activity, W/D ratio, TLR4 expression and serum TNF-α concentration lower in group PHCD than in group ALI ( P ＜ 0.05). The lung histopathologic damage was significantly ameliorated in PHCD group as compared with ALI group. Conclusion PHCD can protect the lungs against blunt chest trauma-induced ALI, and the down-regulation of TLR4 expression in lung tissues and reduction of inflammatory response are involved in the mechanism.

Objective To explore the therapeutic efficacy of posterior internal fixation and anterior debride-ment with autogenous bone grafts at one stage on tuberculosis of thoracic or lumbar spine . Methods 16 cases of thoracic or lumbar spinal tuberculosis patients were treated with combined anterior (radical debridement and bone autograft) and posterior (instrumentation) surgeries in one stage between September 2003 and September 2007. The degree of the kyphosis (Cobb angle) was measured and the interbody fusion was observed preoperatively and postop-eratively. The ASIA grading system was used to assess the neurological status. Results All patients were followed up for 10 months to 36 months,on average of 12 months. All patients showed sucessful interbedy fusion,but Cobb angle was not progressed. No recurrence or wound infection was found. 6 cases all got nerve function recovery. Conclusion Thoracic or lumbar tuberculosis treated with this surgical technique can achieve stable internal fixation and a high satisfactory rate with restoring the spinal stability, arresting the disease early, providing early fusion, correcting the ky-pbosis particularly.

Objective To investigate the predictive factors of long-term outcome of cerebral venous sinus thrombosis (CVST).Methods The clinical data of 26 patients with CVST were analyzed retrospectively.The clinical outcome was assessed with the modified Rankin Scale (mRS) at 6 months after symptom onset.Univariate and multivariate analysis were used to determine the independent predictors of the long-term poor outcome.Results The mRS scores for 26 patients with CVST:0 to 1 in 19 cases,2 in 2 cases,3 to 5 in 3 cases,and 6 in 2 cases.19.2％ of patients had poor outcome (mRS score,≥3),and the mortality rate was 7.7％.The survivors did not have any recurrence within 6 months.Univariate analysis showed that disturbance of consciousness,papilloedema,cerebral edema,and cerebral deep venous thrombosis were the possible risk factors for poor outcome,while headache was the main clinical manifestation,which was negatively correlated with the poor prognosis.Multivariate regression analysis showed that disturbance of consciousness was an independent predictor of poor outcome in patients with CVST (odds ratio,48.0,95％ confidence interval 2.311 to 997.176,P =0.012).Conclusions The long-term outcome of the patients was better,disturbance of consciousness was an independent predictor of poor outcome at 6 months after the onset.

Objective To investigate the appearance and characteristics of hepatic tuberculosis lesions on low mechanical index contrast-enhanced ultrasound. Methods Eight patients with hepatic tuberculosis lesions were studied with conventional ultrasound and contrast-enhanced ultrasound. Lesions,distribution.size,echogenieity,blood flow,enhancement phase,enhancement patterns and intensity were studied. ResuIts Fifteen lesions were found in eight patients. On conventional ultrasound,mean size of the lesions was(21.7±10.7)mm×(30.3±22.4)mm,and 66.7%(10/15)lesions located under liver capdule,and 33.3%(5/15)were in hepatic parenchyma.All lesions were hypoechoic except the largest one (50 mm x 102 mm)which demonstrated heterogeneous.Doppler signals were not demonstrated in all 15 lesions.After administration of SonoVue,satisfied image data were obtained in 13 lesions for aterial phase,and 15 lesions for portal venous phase and parenchyma phase.84.6%(11/13)of the lesions demonstrated hyperenhancing on aterial phase,mean enhancing start time was(8.6±1.6)s,ranging from 5 s to 10 s.and mean enhancing end time was(25.6±2.8)s,ranging from 20 s to 29 s. Of 13 lesions,6 lesions demonstrated circle periphery hyper-enchanCement,5 lesions demonstrated whole hyper-enchancement,and 2 lesions appeared hypoenhancement on arterial phase. All lesions demonstrated either hypoenhancing or non-enhancement on portal venous phase and parenchyma phase. Conclusions Low mechanical index contrast-enhanced ultrasound can reveal the blood flow status of hepatic tuberculous lesions and will facilitate the diagnosis of hepatic tuberculosis.

The authors observed the development of the organ of Corti in the temporal bones of 64 human fetuses of various fetal ages by means of comparing celloid sections with surface preparations. The organ of Corti just begins to appear in the second month. Most rapid development occurs in the period from the third to the fifth month. Afterwards, the principal structure of the organ of Corti tends to be stable with no further major changes, except for the differentiation and maturation of the intracellular components. In the fifth month, the major part of the higher columnar epithelial cells on the inner Side of the tunnel begins to degenerate and disintegrate before the formation of the inner spiral sulcus. But a few epithelial cells turn into large wandering cells. The authors discussed the characteristics, function and possible transformation of the wandering cells and compared them with essentially similar cells that appear in the developing central nervous system.