Objective To investigate the probable function of new peptide apelin in pathological proceeding of pulmonary hypertension induced by hypoxia.Methods Twenty male Sprague-Dawley rats were randomly divided into normal control group and hypoxia group(9%-11% O_(2),9 h/d,6 d).The mean of pulmonary arterial pressure(mPAP),mean carotid arterial pressure(mCAP) and the weight ratio of right ventricle to left ventricle plus septum(RV/LV+S) were measured.The concentration of apelin in the plasma,right ventricular myocardium and lung tissue were measured by radioimmunity.The expression of apelin gene in right ventricular myocardium and lung tissue were measured by reverse transcription-polymerase chain raction(RT-PCR).Results The mPAP and RV/(LV+S) of hypoxic group were respectively more by 26.06% and 10.83% than control group(P

To study the clinical application of molecular diagnosis in cutaneous T-cell lymphoma (CTCL),the polymerase chain reaction Was used to detect the rearrangements of T-cell receptor (TCR)gene in 60 patients with cutaneous lymphocytic infiltrates.The result showed that dominant clonal TCR-? or ? gene rearrangements were detected in 36/40 CTCL,4/6 suspected mycosis fun- goldes/S?zary syndrome,1/1 lymphomatoid papulosis.No dominant clonal TCR-? or ? gene rearrange- ments were detected in 2 patients with CBCL,1 patient with lymphocytoma cutis,8 patient with benign lymphocytic infiltrates of skin and 2 normal controls.This study demonstrates that the method is help- ful for the lineage determination,clonality and early diagnosis of CTCL.

Aim To explore the effects of Puerarin on the Apelin and its receptor APJ of lung tissue in rats with hypoxia pulmonary hypertension.Methods Thirty SD rats were randomly divided into normal control group(N),and hypoxia hypercapnia group(F),and hypoxia hypercapnia+Puerarin group(P).The levels of Apelin-36 in serum and in lung tissue were measured by radioimmunity,the expressions of Apelin and APJ in pulmonary tissuse were observed by RT-PCR.Results ①Mean pulmonary arterial pressure(mPAP),weight ratio of RV to LV+S,the levels of Apelin in serum and in lung tissue of group F were significantly higher than those of group N(P

The functional experiment teaching is an inspection to students of their thinking methods and the operation abilities,and is also the summary and sublimation of this course theories teaching.To adapt to the demand for cultivation of the talented person by innovation education,we probe into the improvement of teaching methods of the functional design experiment,and practiced the new teaching system of "six processes"teaching methods such as speaking briefly,giving a demonstration,questioning,giving clue,study and discussion,evaluation,and push forward the biomedical science modes toward the development of "living creature-mental state-social medical science mode"direction.

Objective To investigate the effects of 7 5% hypertonic saline (HS) on fluid balance after elective major abdominal surgery Methods Twenty two patients undergoing elective major abdominal surgery were assigned to receive either Ringer lactate solution followed by 4 ml/kg of 7 5% HS (study group, n =11) or Ringer lactate solution (control group, n =11) during the early postoperative period in ICU We compared fluid infusion volumes and urine outputs, fluid balance, and body weight change between the 2 groups Results Urine outputs in the operative day and the first postoperative day in study group were significantly more than in control group [(2?650?531)ml vs (2?046?572)ml, t =2 551?7, P

AIM: To explore the effects and possible mechanism of exogenous spermine on the apoptosis of primary cultured neonatal cardiomyocytes induced by simulated ischemia-reperfusion (I/R) injury. METHODS: To establish a model of simulated I/R, the primary cultured neonatal rat cardiomyocytes were incubated in ischemia-mimetic solution (under the conditions of hypoxia plus serum deprivation) for 2 h, and re-incubated the cells in normal culture medium for 24 h. The apoptotic cell death was assayed by flow cytometry. The morphological alterations of the cells were observed under transmission electron microscope. The transcription and expression of Fas and FasL were determined by the methods of RT-PCR, Western blotting and immunofluorescence. RESULTS: The cells exposed to I/R underwent significant apoptosis, and the percentage of apoptotic cells was 27.4%±1.8%, much higher than that in normal group (5.7%±0.3%). In I/R group the evident histopathological changes were observed and the myocardial transcription and expression of Fas and FasL were significantly upregulated. Compared to normal group, mRNA expression of Fas and FasL increased 2.2 folds and 2.4 folds, respectively, and their proteins increased 1.7 folds and 1.9 folds at 24 h of reperfusion respectively (P<0.01). Pretreatment with 10 μmol/L spermine significantly inhibited apoptosis of I/R injured cells, and the percentage of apoptotic cells was 21.7%±1.3% (P<0.01, as compared to I/P group). Spermine also suppressed the expression of Fas and FasL significantly (P<0.05 or P<0.01, as compared to I/P group). CONCLUSION: Spermine plays anti-apoptotic effect on the cultured neonatal myocardial cells under the condition of I/R injury by suppressing the expression of Fas/FasL.

AIM:To study lipopolysaccharide (LPS)-stimulated secretion of endothelin-1 (ET-1) and adrenomedullin (Adm) from human vascular endothelial cells (HVEC) and its mechanism. METHODS:In cultured HVEC, LPS was used to stimulate ET-1 and Adm secretion from HVEC. The contents of ET-1 and Adm in medium were determined by radioimmunoassay. RESULTS:LPS stimulated secretion of ET-1 and Adm from HVEC in time-dependent and concentration-dependent manner. The ratio of secreted ET-1 to Adm was not changed compared with the control group. The increase of ET-1 could be inhibited by inhibitor of extracellular signal-regulated protein kinases (PD098059) and inhibitor of P38 kinase (SB202190)（P＜0.01）, while the increase of Adm could only be inhibited by SB202190（P＜0.05）, both had no response to inhibitor of protein kinase C (H7), inhibitor of calmodulin (W7), inhibitor of calcineurin (cyclosporin A) and inhibitor of Ca2+ (nicardipine)（P＞0.05）.CONCLUSION:ERKs and P38 signal pathways may play an important role in the secretion of ET-1 from LPS -stimulated HVEC, while only P38 kinase signal pathway is invovled in the secretion of Adm.

AIM: To study lipopolysaccharide (LPS)-stimulated secretion of endothelin-1 (ET-1) and adrenomedullin (Adm) from human vascular endothelial cells (HVEC) and its mechanism. METHODS: In cultured HVEC, LPS was used to stimulate ET-1 and Adm secretion from HVEC. The contents of ET-1 and Adm in medium were determined by radioimmunoassay. RESULTS: LPS stimulated secretion of ET-1 and Adm from HVEC in time-dependent and concentration-dependent manner. The ratio of secreted ET-1 to Adm was not changed compared with the control group. The increase of ET-1 could be inhibited by inhibitor of extracellular signal-regulated protein kinases (PD 098059 ) and inhibitor of P38 kinase (SB 202190 )( P 0.05).CONCLUSION: ERKs and P38 signal pathways may play an important role in the secretion of ET-1 from LPS -stimulated HVEC, while only P38 kinase signal pathway is invovled in the secretion of Adm.

AIM: To study the effect of chronic hypoxia on L-Arginine/NO pathway in rat pulmonary artery. METHODS: Changes in pulmonary artery L-Arginine(L-Arg) transport, nitric oxide synthase (NOS) activity, plasma nitrite level and L-Arg level in HPH rats were investigated. RESULTS: (1) The mean pulmonary arterial pressure (mPAP) and weight ratio of right ventricle to left ventricle and septum (RV/LV+S) of HPH group were higher than those in control group (P

Objective To evaluate the diagnostic capabilities of T2 WI features in peripheral zone prostate cancer.Methods The characteristics of T2 WI in 56 cases of peripheral zone prostate cancer,75 cases of benign prostatic hyperplasia and 7 cases of prostatitis confirmed by pathology were analyzed retrospectively.Eight indexes were initially screened byχ2 test,then indexes with significant difference were entered into multivariate Logistic regression analysis.Results The indexes showing statistical differences between prostate cancer and benign prostatic disorders were as following:lesion shape,signal intensity,signal uniformity,boundary of peripheral zone and transition zone,the volume of peripheral zone and prostatic capsule on T2 WI (P<0.05).Margin of lesion and capsule between two groups were not statistical differences (P>0.05).By multivariate Logistic analysis,the statistically significant difference were found in lesion shape, the volume of peripheral zone,prostatic capsule and boundary of peripheral zone and transition zone.Conclusion The lesion shape, volume of peripheral zone and prostatic capsule on T2 WI are independent risk factors for peripheral zone prostate cancer.