42 results about "Myocardial apoptosis" patented technology

The invention discloses a recombinant protein AGGF1. The recombinant protein AGGF1 can improve the cardiac function of a mouse with acute myocardial infarction and inhibit myocardial apoptosis and cardiac fibrosis by promoting angiogenesis in the heart of the mouse. Thus, the recombinant protein AGGF1 can be used for preparation of angiogenesis promoting drugs for treatment of ischemic diseases. Meanwhile, the recombinant protein AGGF1 can improve the cardiac function of the mouse and inhibit cardiac fibrosis by inhibiting vascular leakage and oedema in cardiac muscles after the operation of cardiac ischemia reperfusion. Thus, the recombinant protein AGGF1 provided by the invention can be used for preparation of drugs for inhibiting vascular leakage to treat vascular leakage, oedema and dysfunction caused by cardiac ischemia reperfusion.

The invention discloses new application of gynesine, namely application of the gynesine in preparing a medicine or food for treating or preventing hypoxic damage, and the medicine or the food preparedfrom the gynesine and used for treating or preventing hypoxic damage. The research finds that the gynesine has a function of treating or preventing hypoxic damage, and can be used for preparing the medicine or the food for treating or preventing hypoxic damage; a cell experiment and an animal experiment prove that the gynesine can be beneficial to protecting hypoxic nerve cell damage, reducing myocardial apoptosis caused by hypoxia, prolonging the survival time of rats in a normal pressure anoxia tolerance test, and increasing the survival rate of the rats in an acute low pressure hypoxia test.

The invention provides an application of curcumin metabolite in preparation of a medicine for treating myocardial ischemia related injury. The research on the intervention effect of a rat MIRI model finds that both CUR and OHC can improve the impaired heart function and serum myocardial enzyme expression, relieve the ventricular enlargement degree, reduce myocardial cell apoptosis and tissue fibrosis-like change and relieve the pathological expression of MIRI, and the improvement effect of OHC is slightly excellent. Therefore, the molecular mechanism of the MIRI disease process can be known, and a valuable scientific basis is provided for explaining the pharmacodynamic action mechanism of the CUR and the active metabolite OHC of the CUR.

The invention discloses the new application of carthamus tinctorius yellow colour which is prepared by extracting traditional Chinese safflower, namely, the new application on preparing medicines which cure and/or prevent the death of cardiac muscle cells; the invention also discloses medicines prepared by the carthamus tinctorius yellow colour and formulations thereof.

The invention discloses application of a berberine and doxorubicine mixed preparation in preparation of a medicament against doxorubicine cardiac dysfunction or tumor. The molar concentration ratio of the berberine to the doxorubicine in the medicament is (0.625-4): 1, and the optimal ratio is 1:1. The medicament is an oral preparation or an injection preparation. The combined use of the berberine and the doxorubicine can lighten myocardial damage caused by the doxorubicine, also can play a role in inhibiting myocardial apoptosis caused by the doxorubicine, and does not weaken, even enhance the anti-tumor effect of the doxorubicine at the same time.

The invention discloses a method for constructing a human myocardial cell apoptosis model. The inventor accidentally finds that after angiotensin II with a certain concentration is used for treating hiPSC-CM for a certain time, the apoptosis of hiPSC-CM can be effectively induced. According to some examples of the invention, the angiotensin II is used for inducing the apoptosis of human myocardialcells, and the myocardial cell apoptosis model closer to the human body is constructed, so that a powerful tool and method are provided for subsequent pharmacological experiments.

The invention belongs to the technical field of biological medicines, and particularly relates to application of an MYOG gene as a target point in preparation of drugs for treating cardiovascular diseases related to myocardial cell apoptosis. According to the invention, an angiotensin II induced human induced pluripotent stem cell differentiation myocardial cell apoptosis model is constructed in vitro, the effect of a transcription factor MYOG in inhibiting myocardial cell apoptosis is disclosed for the first time, and a theoretical basis and a scientific basis are provided for research and development of drugs for cardiovascular diseases related to myocardial cell apoptosis, thereby being a new target for research and development of cardiovascular disease drugs.

The invention relates to application of a traditional Chinese medicine composition in preparation of a medicine for preventing and/or treating myocardial ischemia reperfusion injury. The traditional Chinese medicine composition is prepared from radix rehmanniae praeparata, rhizoma coptidis, radix paeoniae alba, radix scutellariae, colla corii asini and poria. The traditional Chinese medicine composition can obviously control the weight gain of a rat after ovariectomy and can obviously reduce the infarction area of the rat under myocardial ischemia-reperfusion injury after ovariectomy; the levels of serum LDH and serum CK after myocardial ischemia reperfusion are remarkably reduced, and myocardial damage is reduced; and according to the application, the expression of GRP78 protein, CHOP protein, Active-caspase12 protein and the Active-caspase3 protein after the myocardial ischemia reperfusion can be significantly inhibited and reduced, so as to inhibit the apoptosis of the myocardial cells after the myocardial ischemia reperfusion.

The invention discloses application of irisin in the preparation of drugs for preventing myocardial ischemia reperfusion injuries. Experimental results show that irisin can decrease the myocardial infarction area caused by ischemia reperfusion, reduce the increase of the contents of lactate dehydrogenase (LDH), troponin (cTnI), creatine kinase (CK), and other myocardial enzyme markers caused by ischemia reperfusion, meanwhile reducing the inflammatory response, myocardial apoptosis, and oxidative stress response caused by myocardial ischemia reperfusion, promote peroxysome proliferator-activated receptor γ nuclear translocation, and inhibit nuclear transcription factor NF-κB nuclear translocation and accordingly decrease myocardial structure injuries and load increase caused by ischemia reperfusion. Therefore, irisin can be used for preventing and decreasing myocardial reperfusion injuries and has important clinical significance on the treatment of myocardial ischemia.

The invention discloses application of fuziline in preparation of a medicine for preventing and/or treating diseases caused by myocardial cell apoptosis. The invention discovers for the first time that fuziline has an effect of protecting myocardial cells, can inhibit the myocardial cell apoptosis caused by ISO by inhibiting the endoplasmic reticulum stress injury of the myocardial cells by reducing ROS generation, and can be used for preparing the medicine for preventing and/or treating the diseases caused by the myocardial cell apoptosis; and the invention also discovers that a composition of ginsenoside Rb1 and fuziline and a composition of tanshinone IIA and fuziline can obviously improve the survival rate of the myocardial cells compared with the single effect of fuziline. The fuziline disclosed by the invention can be widely applied to the field of medicines, and can provide a new medicine source for treatment of the diseases caused by the myocardial cell apoptosis.

The invention discloses an application of an alkaloid compound in preparation of a product for preventing and/or treating heart injury, activity research is performed on the alkaloid compound, and it is verified that the alkaloid compound can inhibit apoptosis induced by myocardial toxicity. According to the present invention, by down-regulating the expression level of p-JNK and/or Cleaved-Caspase-3, the myocardial apoptosis induced by the anthracycline drug DOX is inhibited so as to alleviate the myocardial cytotoxicity effect, achieve the myocardial cytotoxicity prevention and/or treatment effect, and can be used for preparing drugs for preventing and/or treating myocardial injury related diseases.

The invention relates to a method for attacking miRNAs through free radicals to cause oxidative damage to the RNAs. According to the method, 8-oxoguanine is generated through oxidation of guanine 8-bit carbon in an oxidative stress state so that the miRNAs undergo oxidative damage. A damage mode is selected from one or more of the following modes: (1) the oxidative damage is caused to the miRNAs through a Fenton reagent oxidation system; (2) the oxidative damage is caused to the miRNAs in the process of using H2O2 to process and induce apoptosis; (3) the oxidative damage is caused to the miRNAs in a Fe overloading induced myocardial injury animal model; and (4) the oxidative damage is caused to the miRNAs in a myocardial ischemia-reperfusion injury animal model. According to the method, the miRNA subtype variety of the miRNAs undergoing the oxidative damage in the process of using H2O2 to induce the myocardial apoptosis is determined, and functional differences are expressed through the generation and degradation of the oxidative damage miRNAs in myocardial cells, location characteristics, the synergistic effect with other biomacromolecule and oxidative damage miRNA regulatory genes. The method is simple in process and obvious in damage effect, the applied range is wide, and the method has application environment friendliness.

The invention discloses an application of calycosin in preparation of ALDH2 agonist medicines, and belongs to the field of medicines. The invention particularly discloses application of calycosin in preparation of ALDH2 agonist medicines, application of calycosin in preparation of alcoholic cardiomyopathy prevention and treatment medicines and application of calycosin in preparation of alcohol-induced myocardial cell apoptosis inhibition medicines. According to the calycosin disclosed by the invention, by improving the activity of cardiac muscle cell ALDH2, increasing activated aldehydes and inhibiting alcohol-induced cardiac muscle cell apoptosis, a scientific basis is further provided for application of the calycosin in preparation of ALDH2 agonists and medicines for preventing and treating alcoholic cardiomyopathy, the calycosin is low in toxicity to normal cells, and the calycosin is derived from traditional Chinese medicines such as astragalus membranaceus and liquorice, has certain safety, is relatively low in preparation cost and has a clinical application prospect.

The invention discloses an application of a novel flavonoid compound Hyd. A hippophae rhamnoides seed meal extract is eluted through an MCI gel column; semi-preparative separation is sequentially performed through a C18 chromatographic column, a diol chromatographic column and a C18 chromatographic column to obtain the novel flavonoid compound Hyd; the compound Hyd is subjected to activity research, it is verified that the compound Hyd can reduce the content of lactic dehydrogenase and NO in myocardial cells, apoptosis of the myocardial cells is delayed by reducing the protein expression levelof Bcl-2 and Bax in the cells, and the compound Hyd can be used for preparing medicine for preventing or treating myocardial injury related diseases. The invention also provides application of the new compound Hyd in preparation of products with neuroprotection and/or nerve repair effects, and verifies that the compound Hyd can improve neurosynaptic atrophy and reduce tau protein excessive phosphorylation, and can be used for preparing medicines for preventing or treating neurodegenerative diseases.

The present invention belongs to the field of medicine technology, and is especially one kind of medicine composition in preparing medicine for treating myocardial apoptosis. The experiments of administrating the medicine composition to spontaneous hypertension rats, measuring the left venticle thickening index, and radioimmunoassay measuring the local Ang II concentration in cardiac muscle and blood plasma and the aldosterone concentration in blood plasma show that the said medicine composition can lower SHR myocardial apoptosis and reduce left venticle thickness when used alone or together with fosinopril.

The invention discloses application of sodium orthovanadate in preparation of medicine for resisting myocardial apoptosis caused by excessive lipid accumulation. Experiments prove that the sodium orthovanadate can effectively inhibit the myocardial apoptosis induced by long-chain saturated fatty acid palmitic acid, and it is specifically shown that the sodium orthovanadate inhibits the apoptosis induced by the palmitic acid from executing cutting of a caspase precursor, promotes protein expression of anti-apoptosis protein Bcl-2 and obviously reduces the apotosis rate and pyknosis of nucleus chromatin. On the basis, it is expected that application is supplied to SOV in aspect of preparing the medicine for treating the myocardial apoptosis induced by excessive lipid accumulation along with diseases such as obesity and diabetes in clinical research, and it is indicated that the wide scientific research and clinical development prospects are achieved.

The invention discloses a medicine composition for treating heart failure and application thereof. The medicine composition is prepared from an active ingredient and medicinal auxiliaries, wherein the active ingredient comprises (1) tortuosine and (2) trimetazidine or medicinal salt thereof. The medicine composition can be used for synergistically resisting myocardial apoptosis and protecting cardiac muscle mitochondria so as to achieve the aim of preventing and treating heart failure.