To study the effect of different exercise intensities on cardiac endocrine function, with radioimmunoassay, immunohistochemistry and the technique of computer image analysis, the level of plasma ANP and the expression of ANP in myocardial cells of rats with different training intensities were investigated. The result showed that with the increasing of exercise intensity,the level of ANP in plasma increased progressively, the expression of ANP in myocardial cells increased remarkably after moderate and heavy exercise training while it decreased remarkably after exhaustive exercise training. Results suggested that different exercise intensities revealed different effects on adaptation of cardiac endocrine function.

To study the effect of exercise on gene expression of natriuretic peptide receptors (NPRs) in the heart, using immunofluorescent method, in situ hybridization, laser confocal scanning microscopy and the technique of computer image analysis, the distribution of NPRs in the heart and the alterations of gene expression of NPRs on the animal model of different training intensity were investigated. The result showed that NPRs located mainly in the endocardium, the sarcolemma of myocardial fiber, the connective tissue around myocardial fiber and the wall of coronary artery branch. After moderate and heavy exercise training, the gene expression of natriuretic peptide receptor-A (NPR-A) upregulated and natriuretic peptide clearance receptor (NPR-C) downregulated, whereas the gene expression of NPR-A downregulated and NPR-C upregulated after exhaustive exercise.

Objective To investigate the right ventricular morphology and function of patients with atrial septal defects by single beat real-time three-dimensional echocardiography.Methods Thirty-four healthy volunteers and twenty-seven ASD patients were enrolled consecutively as normal controls and the ASD group respectively.Single cardiac cycle real-time three dimensional echocardiography was performed in all to evaluate parameters concerning modality and systolic function of participants' right ventricle.The relationship of indexed right ventricular end diastolic volume (IEDVRV) and end systolic volume(IESVRV)with mean pulmonary arterial pressure measured through cardiac catheter and systolic pulmonary artery pressure calculated though the three tricuspid regurgitation were observed.Results Indexed right ventricular end diastolic volume (IEDVRv),end systolic volume(IESVRV),right ventricular stroke volume (ISVRV) and right ventrieular ejection fraction (RVEF) were greater in the ASD group than in controls (P ＜ 0.05).IEDVRv and IESVRV had positive relation with pulmonary pressure measured by cardiac catheter and systolic pulmonary artery pressure calculated though the three tricuspid regurgitation.Conclusions Single cardiac cycle real-time three dimensional echocardiography has an obvious advantage than normal test in evaluating the change of the right ventricular function and shapes,furthermore,single cardiac cycle real-time three dimensional echocardiography can indirectly determined the pressure of the pulmonary without wound.

Multi-component Chinese medicine has been considered an important developmental direction for traditional Chinese medicine (TCM) formula.Nowadays,it is unfit to target a molecule for preventing or curing a disease because it resulted from multiple of factors and resulted in many indications.Thus,the idea focusing on the multiple targets for therapy is increasingly accepted by physicians and scientists.Here,we conceived a new simplified method for screening the active multi-component Chinese medicine based on the complexity of Chinese medicine,the multi-target property of protein signal transduction and the principle of Chinese medicine prescription.Combined with the traditional knowledge on tumor and latest antitumor research results of Chinese medicine and its compounds,the method was concretely illustrated.It helps us to transform the herbal compounds to new complex drugs targeting multiple signaling.

AngiotensinⅡ( AngⅡ) is the main functional bioac-tive peptide of the renin angiotensin system,and its basic function is to regulate salt-water homeostasis and blood pressure. Howev-er,recent studies have shown that AngⅡ plays a very important role in tumor formation and angiogenesis by acting on its type 1 receptor (AT1R) as a kind of potential growth factor. This arti-cle is a brief overview of the research on effects of AngⅡ-AT1R system in the process of tumor angiogenesis in recent years.

MTH1 (MutT Homolog1 )as MutT homologous en-zyme,is a nucleotide pyrophosphatase,mainly involved in DNA damage repair process,especially plays an important role in the process of DNA replication in tumor cells.Recent studies have found that MTH1’s function is responsible for the development of a variety of tumors.Studies have shown that,MTH1 can remove tumor cells’oxidative DNA elements detrimental to the function-al structure,protecting tumor cell division and proliferation, maintaining tumor cell survival,however,normal cells do not need MTH1.Therefore,MTH1 may be only closely associated with abnormal cell growth.This makes MTH1 as therapeutic tar-gets that have been paid much attention.This article reviewed the relationship of MTH1 and tumor,discussed the mechanisms of MTH1 in tumor growth MTH1 and tumor treatment,so as to provide reference for clinical research and treatment of tumor.

AIM To observed the effect of procyanidins on DNA damage induced by carcinogen or hydroxyl radical (OH?),and inhibitory effect on topoisomerase. METHODS Using labeled TdR uptake assay and single cell gel electrophonesis. Topoisomerase was extracted from B16F10 cell lines, used agarose gel electrophoresis assay. RESULTS It was showed that hydroxyl radical (OH?) or different doses of MNNG can induce severe DNA damage of L 929 cell lines. Procyanidins can alleviate the damage induced by MNNG or OH?. It shows certain dose dependent effect relationship . But there is no significant inhibitory against Topo Ⅱ activity by procyanidins even at a dose of 50 ?mol?L -1 . CONCLUSION Procyanidins from grapes seeds can protect DNA damage,but not inhibit topoisomerase activity. This is one of cancer chemoprevention mechanism of Procyanidins.

Aim To discuss the impact of important ac-tive ingredient of garlic diallyl sulfide———DATS on platelet activating factor (PAF ) mediated melanoma metastasis and its mechanisms.Methods ①MTT was used to test the effect of different concentrations of DATS on B16F10 and A375 melanoma cell growth number;②Scratch test and transwell were employed to test the effect of different concentrations of DATS on B16F10 and A375 melanoma cell migration;③ West-ern blot was used to test the effect of DATS on expres-sion of MMP-2,ERK,p38 induced by PFA;④Intrave-nous injection of tumor metastasis model was used to check the inhibition of DATS in PAF-mediated melano-ma metastasis.Results B16F10 cells relative growth rate fell to 73.21% and 48.78%,respectively,when DATS concentration reached 50 and 100 μmol·L-1 . DATS inhibited the levels of PAF-induced migration of melanoma cells B16F10 and vertical migration signifi-cantly,and inhibited B16F10 cells migration induced by PAF through inhibiting the expression of MMP-2, paxillin protein,FAK and other proteins.Conclusion DATS can significantly inhibit PAF-induced tumor metastasis, which is related to the inactivation of MAPKs.

Tumor necrosis factor receptor-associated protein 1 (TRAP1),as one of the main members of the heat shock protein 90 family, resists oxidative stress-induced apoptosis as well as predominantly maintains the integrity of mitochondria and cellu-lar homeostasis. Abnormal expression of TRAP1 was herein closely related to the onset and progression of a wide variety of tumors. As a key regulatory factor mediating energy metabolism within tumor cells, TRAP1 may be able to kill them by interfer-ing with such metabolism. More importantly, the abnormal ex-pression of TRAP1 played a less important role in normal cells, allowing TRAP1 to be a particularly attractive target as it can be used in tumor treatment or interference. The relationship be-tween abnormal expression of TRAP1 protein and tumor onset was reviewed. Besides, the mechanism by which disordered TRAP1 protein expression induced tumor formation was postula-ted, which may provide references for future research and clini-cal treatment.

Tumor metastasis is one of the important biological characteristics of malignant tumor,which is closely related with the prognosis of the cancer patients.High expression of ADAM8 in varieties of tumors was revealed in many recent studies,and such aberrant expression played a crucial role in regulating of tumor metastasis.Studies showed that overexpression of ADAM8 attenuated the intercellular adhesion effect,promoted tumor angiogenesis,and enhanced the degradation of ECM as well as the releasing of cytokines.Therefore,suppression of ADAM8 may lead to inhibition of tumor metastasis,which makes ADAM8 a particular attractive target as it can be used as a prognostic indicator and a potential therapeutic target of malignant tumor.A review about the relations between ADAM8 protein′s abnormal expression and tumor occurrence was discussed in this paper,also include discussion about the mechanisms of ADAM8 protein′s disorder-induced tumor formation,as well as therapeutic strategies based on ADAM8-targeted,which may provide references for follow-up research and clinical treatment.