Adolescent ; Adult ; Aged ; Aged, 80 and over ; Child ; Female ; Humans ; Immunophenotyping ; Leukemia ; diagnosis ; immunology ; therapy ; Male ; Middle Aged ; Neoplastic Stem Cells ; immunology ; Prognosis ; Treatment Outcome ; Young Adult

In this study, cardiotonic and cardiotoxic effects of Buthus martensi Karsch (BmK) I, a modulator of voltage-gated sodium channels, were investigated on the isolated rat hearts. The results showed that BmK I evoked complex effects characterized by a change in both cardiac mechanical and electrical activity. Langendorff perfusion showed that: (1) maximal left ventricular developed pressure (LVDP(max)) and dp/dt(max) were markedly increased by BmK I (0.5-10 micromol/L) in a dose-dependent manner (n=6, P<0.05), positive chronotropic effects were also induced by BmK I (n=6, P<0.05); (2) negative inotropic action and bradycardia could be elicited at a larger dose of BmK I (20 micromol/L); (3) the coronary flow varied inversely with the positive inotropic effects, coronary flow reduced during positive inotropic effects from 14.5 to 8.6 ml/min after administration of 500 nmol/L BmK I (n=6, P<0.05). In addition, tachycardia and complex cardiac arrhythmias were induced by BmK I (0.5-10 micromol/L). The modulating of BmK I on the heart mechanical, electrical activity could be partially recovered after washing. As propranolol was applied to block the release of catecholamines before administration of BmK I, suggesting that the changes in cardiac mechanical and electrical activity induced by BmK I might not due to catecholamine release from the nerve terminal and subsequent stimulation of the beta-adrenoceptor but attributable to the modulation of BmK I on cardiac voltage-gated sodium channels.
Action Potentials ; drug effects ; Animals ; Electrophysiology ; In Vitro Techniques ; Insect Proteins ; Male ; Myocardial Contraction ; drug effects ; NAV1.5 Voltage-Gated Sodium Channel ; Neurotoxins ; pharmacology ; Patch-Clamp Techniques ; Rats ; Rats, Sprague-Dawley ; Scorpion Venoms ; pharmacology ; Sodium Channel Blockers ; pharmacology ; Sodium Channels ; drug effects

Objective To investigate the correlation between α1-adrenergic receptor and the pathological behavior of cholangiocarcinoma, and the effects of norepinephrine (NE) on the proliferation of cholangiocarcinoma cell line QBC939. Methods Thirty-six samples of cholangiocarcinoma were resected in Southwest Hospital from August 2002 to March 2008. The expression of α1-adrenergic receptor in the 36 samples of cholangiocarcinoma tissue and 4 samples of normal bile duct tissue were detected by SABC technique. The proliferation of cholangio-carcinoma cell line QBC939 was detected after processing the cells with NE, phentolamine and prazosin. All the data were analyzed by chi-square test. Results The high positive expression rate of α1-adrenergic receptor was 68% (17/25) in patients with lymph node metastasis, which was significantly higher than 9% (1/11) in patients without lymph node metastasis (χ2=10.604, P<0.05). The high positive expression rate of α1-adrenergic receptor was 85% (11/13) in patients with middle and low positioned cholangiocarcinoma, which was significantly higher than 30% (7/23) in patients with hilar cholangiocarcinoma (χ2=9.753, P<0.05). NE promoted the proliferation of cholangiocarcinoma cell line QBC939 by stimulating the expression of α1-adrenergic receptor, and in a concentration-dependent manner. The proliferative effect was weakened as time passed by, and it was eliminated by phentolamine and prazosin. Conclusions The expression of α1-adrenergic receptor is diverse due to lymph node metastasis and the location of the tumor, α1-adrenergic receptor with high expression may play an important role in the proliferation and metastasis of cholangiocarcinoma.

Objective The autoantibodies against angiotensin Ⅱ type 1 receptor(AT_1 RAb)have been dis- covered in the patients with malignant hypertensive and preeclampsia,this autoantiboies(AT_1-AA)have an ago- nist-like activity effect similar to angiotensin Ⅱ(Ang Ⅱ).This study aimed at investigation the effect of Ang Ⅱ agonist-like activity by AT_1-AA on VSMCs proliferation was obtained from essential hypertensive patients. Methods VSMCs were cultured from aorta of WKY rats.The hypertensive patients" serum was purified by am- monium sulfate precipitation and affinity chromatography.The effect on VSMC proliferation this autoantilody was determined by BrdU incorporation.Total protein and the expression of phosphorylation JAK-STAT were assessed by Western blotting.Results AT_1RAb caused a significant increase in BrdU incorporation similar to Ang Ⅱ during 0-24 h reaching peak value at 12 h.The A value of in 450 nm was higher in AT_1RAb group (0.236?0.012)than AG490+AT_1RAb group(0.176?0.009),Losartan+AT_1RAb groups(0.119?0.006) and Serum Free group(0.127?0.006)(P

Objective To retrospectivel y analyze the abdominal CT findings and pathological results of the chronic schist osomiasis so as to improve the diagnostic accuracy of the disease. M ethods The plain abdominal CT scanning was performed in 103 cases an d enhanced CT scanning in 81 cases. The pathological specimen which was consist ent with the section of CT scan was obtained in each cases. Results On CT scanning, liver cirrhosis was seen in 84 cases, various calci fication in liver in 71 cases, liver cancer in 12 cases, enlargement of sple en in 78 cases, calcification in spleen in 13 cases, wall-thickening in colon i n 27 cases, calcification in colon in 31 cases, and colon cancer in 9 cases. Pa thological examination revealed various fibrosis and formation of pseudolobule. The eggs and calcification could be seen in pseudolobule and septa, colonic sub mucosa, and regional lymph nodes. Fibrous hyperplasia in colonic wall and hyper plasia in mucous membrane were obvious. Fibrous hyperplasia and calcification w ere seen in spleen, but the eggs were not found. Conclusion The liver and colon are the major organs affected by chronic schistosomias is in abdomen, and the CT findings are obvious too. The pathological features o f spleen are accompanied with liver cirrhosis. CT is the important imaging meth od in diagnosing chronic schistosomiasis and pathological changes.

70 bpm during scan),the proportion of segments that could not be assessed because of motion artifact were 0.1%(1/759),1.1%(7/649),2.5% (10/407),42.6%(103/242),and 75.5%(108/143),respectively.With conventional selective coronary angiography as the golden standard,the sensitivity,specificity,positive and negative prediction values to detect≥50% stenotic lesions in the assessable segments were 79.2%,96.0%,83.8%,and 94.6%,respectively.There was a significant correlation between the number of segments per patient not assessable because of motion artifact and heart rate during the scan(r=0.655,P=0.000).Conclusion MSCT is capable of achieving high accuracy for detection of coronary artery stenosis,and is a reliable technique to diagnose coronary artery disease.

Objective To study the mutagenic action of antiepileptic drugs(AEDs), and find an effective way to prevent the mutagenesis induced by AEDs,by observing the effects of AEDs on serum folic acid(FA) level and sister chromatid exchange (SCE) frequency in epileptic children.Methods Ninty epileptic children were divided into different groups on the basis of the different drugs they had taken, then detected the two indexes at different time points.Results The serum FA level and SCE frequency of the patients significantly decreased and increased after they took carbamazepine (CBZ) and valproic acid (VPA)respectively. The two indexes went back respectively when supplied with FA.Conclusions Both CBZ and VPA possess mutagenic action, yet nitrazepam does not.FA may help repair the chromosome damage and reduce the mutagenesis effects.

Objective To introduce the experience of prophylaxis and management of the complications of carotid endarterectomy (CEA) during perioperative period because those complications can not be avoided yet.Methods During Oct 2000 to Jan 2013,318 patients were performed CEA.There were 213 men and 105 women with an average age of 74.8 years ranged from 48 to 85y.There were 186 patients in the left,120 patients in the right,and 12 patients in two sides.Simply,CEA are performed in 166 patients,CEA and patch in 140,and 12 patients were performed bypass with the autogenously great saphenous vein after the lesions removal.Results The perioperative complications were preoperative stroke in 3 cases,hypotension during operation in 16,after-operation deaths in 3,hyperperfusion syndrome in 18,postoperative severe cerebral infarction in 1,hoarseness in 14,and hematoma in 28.Conclusions Perioperative complications of CEA can be decreased by cautious surgical procedure and postoperative observation.

Objective To explore surgical experience of stenoses or occlusion of the vertebral artery .Methods In this group, there were 28 patients including 21 men and 7 females with average of 52 ~73 (68.3 ±0.03) y, duration 3 months to 4 years , and 15 lesions in the left and 13 lesions in the right .All patients were performed operation under general anesthesia .There were 16 vertebral artery endarterectomy , 10 subclavian-vertebral bypass and 2 end-side anastomosis between vertebral artery and common ca-rotid artery.Results One patient had to be performed second operation at the 7th day after endarterectomy because of anastomotic bleeding.All patients were cured.The patency rate of 6 months was 89.28%(25/28) in all patients.Conclusions Surgical man-agement of stenoses or occlusion of the vertebral artery has excellent curative effect with simply operation .However , the technique must be selected according to anatomic circumstances of vertebral artery and subclavian artery .

Canrenone is an important intermediate for the synthesis of eplerenone,a cardiovascular drug.C_ 11 ?-hydroxylation of canrenone is the key reaction,which can be done by microbial transformation.Rhizopus sp.SIPI-0602,kept in our lab,could high selectively transform canrenone to a compound named SIPI-11.By determining and analyzing the MS,UV,NMR etc.spectra of compound SIPI-11,its chemical structure was elucidated to be 11?-hydroxycanrenone.The study on flask transformation technology showed that the transformation ratio exceeded 90% when the substrate concentration was not more than 6g/L.