Objective To investigate the effects of sevoflurane preconditioning on the expression of pulmonary angiotensin converting enzyme (ACE) mRNA in lung tissues during lung ischemia-reperfusion (I/R) in rats.Methods Fifty-four male Sprague-Dawley rats,weighing 250-320 g,were randomly divided into 3 groups (n =18 each):sham operation group (group S),I/R group and sevoflurane preconditioning group (group SP).The animals were anesthetized,tracheostomized and mechanically ventilated.Lung I/R was induced by clamping the left pulmonary hilum for 45 min followed by 120 min reperfusion in groups I/R and SP.While the left pulmonary hilum was only isolated but not ligated in group S.2.1％ sevoflurane was inhaled for 30 min,and lung I/R was induced 10 min after the end of inhalation in group SP.Six rats in each group were chosen at 30,60 and 120 min of reperfusion and sacrificed,lungs were removed for determination of wet/dry lung weight (W/D) ratio,MPO activity (by colorimetric method) and the expression of ACE mRNA (by RT-PCR) and for microscopic examination in lung tissues.Results Compared with group S,the W/D ratio,MPO activity and expression of ACE mRNA were significantly increased in groups I/R and SP (P ＜ 0.05).Compared with group I/R,the W/D ratio,MPO activity and expression of ACE mRNA were significantly decreased in group SP (P ＜ 0.05).Microscopic examination showed that the pathologic changes were significantly attenuated in group SP compared with group I/R.Conclusion Sevoflurane preconditioning can reduce lung I/R injury through downing-regulating the expression of ACE mRNA in rats.

Objective To observe the effects of D-limonene on the adhesiveness and invasion of gastric cancer cell line-SGC-7901. Methods MTT chromatometry was used to detect the effects of D-limonene on cancer cell′s survival rate. Fibronectin and laminin were employed to detect the adhesive inhibition of SGC-7901 by D-limonene. Using artificial basal membrane,invasion inhibition of SGC-7901 was studied in Transwell cabin. Matrix metalloproteinase 2 (MMP-2) and metalloproteinase 2 (TIMP-2) protein of SGC-7901 was detected by Western-blot. Results The growth of cancer cells was significantly inhibited in a dose dependent manner. The adhesiveness and invasion were prohibited. At the dosage of 0.25 mmol/L,the expression of MMP-2 was down regulated (2.9?0.3),and TIMP-2 up regulated (29.5?0.6) significantly different from control groups (28.6?0.5 and 18.6?0.3,all P

Objective To investigate the effects of remifentanil on lung ischemia-reperfusion (I/R) injury and expression of angiotensin-converting enzyme (ACE) mRNA in rats.Methods Forty pathogen-free adult male Sprague-Dawley rats,weighing 300-350 g,were randomly divided into 5 groups (n =8 each):sham operation group (group S),group I/R and different doses of remifentanil groups (groups R1-R3).Lung I/R was produced by occlusion of the left hilum of lung for 45 min followed by 120 min reperfusion.Remifentanil was infused intravenously at a rate of 0.2,0.6 and 1.2 μg·kg-1 ·min-1 until 120 min of reperfusion after a loading dose of 1 μg/kg at 15 min before occlusion of the left hilum of lung in groups R1,R2 and R3,respectively.The equal volume of normal saline was given in groups S and I/R.The rats were scarified at 120 min of reperfusion and lungs were removed for microscopic examination and determination of wet/dry lung weight ratio (W/D ratio) and the expression of ACE mRNA (by RT-PCR) in the lung tissue.The pathological changes of the lung were scored.Results Compared with group S,the pathological score and W/D ratio were significantly increased and the expression of ACE mRNA was up-regulated in groups I/R,R1 and R2,and the pathological score was significantly increased (P ＜ 0.05),and no significant change was found in W/D ratio and the expression of ACE mRNA in group R3 (P ＞ 0.05).Compared with group I/R,the pathological score and W/D ratio were significantly decreased and the expression of ACE mRNA was down-regulated in groups R2 and R3,and the pathological score and W/D ratio were significantly decreased (P ＜ 0.05) and no significant change was found in the expression of ACE mRNA in group R1 (P ＞0.05).Compared with group R1,the pathological score and W/D ratio were significantly decreased and the expression of ACE mRNA was down-regulated in group R3,and the pathological score and W/D ratio were significantly decreased (P ＜ 0.05) and no significant change was found in the expression of ACE mRNA in group R2 (P ＞ 0.05).The pathological score,W/D ratio and expression of ACE mRNA were significantly lower in groups R3 than in group R2 (P ＜ 0.05).The pathological changes of the lung were significantly reduced in groups R1-R3 as compared with group I/R.Conclusion Remifentanil can attenuate lung I/R injury in rats in a dose-dependent manner and down-regulation of ACE mRNA expression may be involved in the mechanism.

Objective To compare the volume of the basal ganglia in patients with Tourette syndrome(T S) and the normal volunteers and to explore the underlying anatomical basis of TS.Methods Thirty-one cases of TS (TS subjects),31 gender and age-matched subjects (the control subjects) were examined on a 3.0 T MRI system.The volume of the caudate nucleus,globus pallidus,putamen of the two sides and the brain volume were measured with volume analysis software,and the data were normalized according to the individual brain volume.Statistical analysis was performed using t test to compare between the TS subjects and the controls.Results The volume of the both sides of the caudate nucleus,putamen and globus pallidus of TS subjects were (4.11 ±0.12) and (3.76 ±0.11),(2.28 ±0.12)and(2.35 ±0.28),(4.98 ±0.20) and (4.89 ±0.31)cm3,while they were (4.88 ±0.19) and (4.30 ±0.12),(2.28 ±0.12)and (2.35 ± 0.28),(4.98 ± 0.20) and (4.89 ± 0.31) cm3 in the controls,respectively.There were significant differences in the bilateral caudate nucleus and globus pallidus between the TS subjects and control subjects (t =2.97,1.74,3.72,3.93,P ＜ 0.05),but there were no significant differences of the volume in the bilateral putamen between the TS and control subjects(t =0.47,1.31,P ＞0.05).The volume was not significantly different between the left and right caudate nucleus in the TS subjects (t =1.81,P ＞0.05),but the left volume of the caudate nucleus was bigger in the control subjects compared with the right volume,however,there was significant difference between the bilateral caudate nucleus in the control subjects (t =2.34,P ＜ 0.05).There were no differences of volume between the bilateral globus pallidus and putamen in both the TS and control subjects (t =1.12,1.44,1.68,0.38,P ＞ 0.05).Conclusion The abnormal volume of caudate nucleus,putamen,and the globus pallidus may be involved in the pathogenesis of TS.

Objective To investigate the expression of CK19mRNA and CD44mRNA in peripheral blood of patients with breast cancer for forecasting micrometastasis. Methods Expression of CK19 and CD44 were detected in 107 patients by RT-PCR method. Results CK19 and CD44 were positive in 31.8%(34/107) and 32.7%(35/107) of patients with breast cancer 24 hours before surgery respectively,which were statistically different from that of 12 days postoperatively and that of normal controls (all P

Objective:To investigate the therapeutic efficacy of Golimumab in the treatment of children with refractory juvenile dermatomyositis(JDM).Methods:The clinical data of a child diagnosed with JDM in the Department of Allergy, Immunology and Rheumatology of Guangzhou Women and Children′s Medical Center in February 2019 were collected.The treatment effect was studied and literature review was conducted.Results:The patient was a 7-year-old boy with subacute onset of the disease.The illness protracted, and main manifestations included skin rashes, limb weakness, and swallowing dysfunction.Physical examination showed heliotropic rashes, Gottron papules, positive Gower, proximal limb muscle strength grade Ⅲ-Ⅳ, distal limb muscle strength grade Ⅳ, and a choking cough when swallowing fluid food.Laboratory tests revealed alanine aminotransferase (ALT) of 36 U/L, aspartate aminotransferase (AST) of 115 U/L, alkaline phosphatase of 69 U/L, lactate dehydrogenase of 941 U/L, creatine kinase of 974 U/L, hypersensitive C-reactive protein of 26 mg/L and an erythrocyte sedimentation rate (ESR) of 52 mm/1 h. Antinuclear antibody spectra were negative.Electromyography suggested myogenic damage.Thigh magnetic resonance imaging indicated diffuse abnormal signal shadows in the subcutaneous fat, muscles and muscle spaces of both hips, thighs and knee joints.The child was diagnosed with JDM, and given standardized treatment of Methylprednisolone, intravenous immunoglobulin, Methotrexate and Hydroxychloroquine sulfate.However, after the treatment, the facial rashes were still red, proximal limb muscle strength and swallowing dysfunction did not improve, the choking cough symptom still existed, and a Cushing face appeared.Recheck results showed ALT of 24 U/L, AST of 32 U/L, alkaline phosphatase of 56 U/L, lactate dehydrogenase of 216 U/L, creatine kinase of 527 U/L, hypersensitive C-reactive protein of 8 mg/L and an ESR of 15 mm/1 h. Refractory JDM was considered.After negotiating with the patient′s family members, they agreed to treat the patient with Golimumab 50 mg by subcutaneous injection once a month.Then tapered prednisone gradually, stopped Hydroxychloroquine sulfate tablets and continued to give the patient oral Methotrexate.After two doses of Golimumab 50 mg, proximal limb muscle strength and swallowing function improved markedly.After the third subcutaneous injection of Golimumab, proximal limb muscle strength improved to grade Ⅳ-Ⅴ, and he was able to go up and down stairs, squat and stand up after squatting.Besides, dysphagia and the choking cough disappeared, and skin rashes improved.Recheck results suggested a normal ESR and creatine kinase levels.Magnetic resonance imaging of thighs indicated no muscle inflammation.Conclusions:Golimumab works well in the treatment of refractory JDM and can effectively improve muscle strength.Therefore, it can be used as a treatment option for refractory JDM.

Objective To evaluate postprandial pharmacokinetics and bioequivalence of two preparations of cefdinir capsules in Chinese healthy volunteers. Methods In a two-way cross-over study, 24 healthy male volunteers were divided into two groups randomly and a single dose of cefdinir capsules of test and reference preparation were administered orally, respectively.The concentration in plasma was determined by LC-MS/MS. Pharmacokinetic parameters and bioequivalence were calculated and evaluated by DAS. Results The main pharmacokinetic parameters of test and reference were as follows: AUCt (4.35±1.09) μg??h??mL-1 and (4.12±1.22) μg??h??mL-1, AUC0-∞(4.53±1.12) and (4.53±1.73) μg??h??mL-1, t1/2 (1.74±0.29) h and (2.13±1.65) h, tmax(4.44±0.86) h and (4.54 ±1.16) h, Cmax(900±250) ng??mL-1 and (876±269) ng??mL-1 . Conclusion The test and reference preparation of cefdinir capsules are bioequivalent.

ObjectiveTo observe the effects of D-limonene on lymphangiogenesis and lymph node metastasis in breast cancer. Methods Human breast cancer cell lines MDA-MB-435 were implanted into the mammary fat pad of 24 female nude mice to establish breast cancer model. The tumor volume and the incidences of lymph node metastasis were detected. Immunohistochemical staining was used to detect the lymphatic microvessel density and VEGF-C expression of the breast cancer tissues. Results In D-limonene group, tumor volume(0.824?0.31) and incidences of lymph node metastasis(25.0%) were significantly inhibited compared with control group (2.178?0.35,87.5%)(all P

Objective To investigate the value of hepatobiliary scintigraphy combined with total bile acid (TBA) and γ-glutamyhransferase(γ-GT) detection in the differential diagnosis of persistent jaundice induced by infantile hepatitis syndrome(IHS) and congenital extrahepatic biliary atresia(EHBA).Methods A retrospective analysis of 60 infants with persistent jaundice undertaking 99Tcm-diethylacetanilide iminodiacetic acid (EHIDA) hepatobiliary scintigraphy was done in Nanfang Hospital by single photon emission computed tomography(SPECT).Meanwhile,these infants' sera were collected and separately detected by AU5431 automatic biochemical assay;the sensitivity,specificity and accuracy of hepatobiliary scintigraphy with TBA and γ-GT were evaluated.Results The sensitivity to 99Tcm-EHIDA hepatobiliary scintigraphy in the diagnosis of IHS and EHBA were 100.00％ (17/17 cases) and 67.57％ (25/37 cases),the specificity was 67.57％ (25/37 cases) and 100.00％ (17/17 cases),and the accuracy was 77.78％ (42/54cases) and 77.78％ (42/54 cases),respectively.The levels of TBA and γ-GT were higher in infants with EHBA than those with IHS(U =209.0,19.5,all P ＜0.05),and ROC curve analysis indicated that TBA in the IHS group and γ-GT in EHBA group had some diagnostic value[area under curve (AUC) =0.736,0.968,respectively].99Tcm-EHIDA hepatobiliary scintigraphy combined with TBA and γ-GT analysis suggested when intestinal non-radioactive imaging was shown,TBA was 98.5 μmol/L and γ-GT was 298 U/L,the sensitivity,specificity and accuracy of diagnosis of EHBA were 100.00.00％ (17/17 cases),100.00％ (37/37 cases) and 100.00％ (54/54 cases) in a serial test.Conclusions Hepatobiliary scintigraphy combined with TBA and γ-GT examination can effectively identify EHBA and IHS earlier,noninvasively and safely,which have important role in further treatment in infants with persistent jaundice.

OBJECTIVETo investigate the shielding effect of distance in radioactive iodine treatment in patients with differentiated thyroid cancer (DTC).

METHODSEighty-seven DTC patients underwent postoperative radioactive iodine treatment at the therapeutic doses ranging from 2.96 GBq to 7.4 GBq. The patients were divided into two groups to receive high-dose therapy (≥3.7 GBq, 48 patients) and low-dose therapy (<3.7 GBq, 39 patients). The radiation doses at 0.05 m, 1 m, and 3 m were recorded at different days; the doses at 1 m and 3 m on the third day, the dose of standard radioactivity source of 1.11GBq (131)I, and the natural background radioactivity were also recorded.

RESULTSThe radiation dose at a 1-meter distance was significantly higher in the high-dose group than in the low-dose group (P<0.05). The radiation doses in different dose groups at the other distances or at different time points showed no significant differences (P>0.05). On the third day after therapy, the radiation dose at 1 m was significantly lower than the reference radioactivity source of 1.11 GBq (131)I (P=0.000), but still higher than the natural background radioactivity at 3 m (P=0.000).

CONCLUSIONIn DTC patients who receive radioactive iodine therapy, the radioactive radiation dose decreases rapidly after 3 days. The radioactive radiation dose on the third day is significantly lower than the reference radioactive radiation dose, so that the patients can be discharged with safety for contact at a distance beyond one meter.

Adult ; Female ; Humans ; Iodine Radioisotopes ; therapeutic use ; Male ; Middle Aged ; Radiation Dosage ; Radiation Protection ; Thyroid Neoplasms ; radiotherapy