WO2018152996A1 - Use of nadph in preparation of medicine for treating cardiac hypertrophy and heart failure - Google Patents
Use of nadph in preparation of medicine for treating cardiac hypertrophy and heart failure Download PDFInfo
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- WO2018152996A1 WO2018152996A1 PCT/CN2017/090157 CN2017090157W WO2018152996A1 WO 2018152996 A1 WO2018152996 A1 WO 2018152996A1 CN 2017090157 W CN2017090157 W CN 2017090157W WO 2018152996 A1 WO2018152996 A1 WO 2018152996A1
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- A61K31/7084—Compounds having two nucleosides or nucleotides, e.g. nicotinamide-adenine dinucleotide, flavine-adenine dinucleotide
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- the invention belongs to the field of medicines, and particularly relates to the application of NADPH in preparing medicines for treating cardiac hypertrophy and heart failure.
- NADPH reduced nicotinamide adenine dinucleotide phosphate
- PPP pentose phosphate pathway
- GSH glutathione
- GSH is an important antioxidant in the cell, which protects some thiol-containing proteins, fats and proteases from oxidants, especially in maintaining the integrity of erythrocyte membranes.
- NADPH is also involved in the hydroxylation of the body and the biotransformation of drugs, poisons and certain hormones; for example, NADPH can utilize the electron donor of detoxified cells.
- the metabolism of the organism is reduced by metabolism in the body, and the balance of redox is maintained, which plays an important role in the oxidation defense system.
- NADPH can also enter the respiratory chain by means of isocitrate shuttle to produce ATP: due to the low permeability of the mitochondrial inner membrane to the substance, the NADPH produced by the mitochondria in vitro cannot be directly oxidized into the respiratory chain.
- H on NADPH can be delivered to NAD+ under the action of isocitrate dehydrogenase, and then energy is generated by NAD+ entering the respiratory chain.
- ROS reactive oxygen species
- Cardiac hypertrophy is the target organ response of the heart to chronic stress or volume overload. There are about 266 million patients with hypertension in China, and one-third of them with hypertension can be associated with LVH. Cardiac hypertrophy is an extremely important cardiovascular risk factor, which can increase the risk of sudden death such as coronary heart disease, congestive heart failure, stroke or transient ischemic heart attack; more importantly, cardiac hypertrophy is also chronic heart failure.
- Heart failure refers to a syndrome in which circulatory disorders are predominant due to the absolute or relative decrease in cardiac output during normal venous return. Clinically, pulmonary circulation and/or systemic blood stasis and tissue hypoperfusion are the main features. According to the development of heart failure, acute heart failure and chronic heart failure can be divided into acute heart failure. Acute heart failure refers to acute cardiac output in a short period of time.
- Chronic heart failure also known as congestive heart failure or chronic heart failure
- the disease-causing factors cause the heart to be under stress and/or over-loading for a long time, causing the heart to be exhausted and gradually losing compensatory function.
- the cardiac output is absolutely or relatively insufficient to maintain the body's metabolic needs.
- the causes of heart failure are multiple and complex, mainly including myocardial contraction and / or diastolic dysfunction and long-term cardiac load and ventricular filling limitation.
- Heart failure is actually the result of cardiac function from compensation to decompensation; In depletion, especially in chronic heart failure, the compensatory response of the body to prevent the reduction of cardiac output includes neuroendocrine reflex and myocardial configuration reconstruction.
- Cardiac hypertrophy is the main manifestation of cardiac reconstruction. Early cardiac hypertrophy has a certain compensatory significance for cardiac function; however, in the late stage of cardiac hypertrophy, pathological cardiac hypertrophy is accompanied by cardiomyocyte apoptosis, myocardial fibroblast proliferation and myocardial fibrosis interstitial hyperplasia, which promotes cardiac function gradually. The compensation is decompensated and participates in the occurrence and development of heart failure.
- angiotensin conversion Enzyme inhibitors ACEIs
- angiotensin II receptor I blockers ARBs
- Diuretics the mechanism of action is: by eliminating excess water in the body, reducing effective circulating blood volume, reducing cardiac preload, eliminating interstitial edema or pulmonary edema, aldosterone receptors such as spironolactone Antagonists can also resist the cardiac remodeling of aldosterone
- calcium antagonists the mechanism of action is: inhibition of extracellular Ca 2+ influx, decrease intracellular free Ca 2+ concentration, relax blood vessels, lower blood pressure
- the above-mentioned drugs (1)-(4) alleviate or reverse cardiac hypertrophy and gradually improve cardiac function, and are suitable for long-term treatment of cardiac hypertrophy or chronic heart failure, but because they do not have a cardiac effect, the development of cardiac hypertrophy to heart failure
- the decompensation period is generally effective and cannot be used for the treatment of acute heart failure; while the category (5) drugs have more serious adverse reactions in clinical application, such as increasing the risk of arrhythmia and even increasing heart failure. mortality rate.
- the present invention proposes the use of NADPH in the preparation of a medicament for the treatment of cardiac hypertrophy and heart failure.
- the present invention provides the use of NADPH for the preparation of a medicament for the treatment of cardiac hypertrophy.
- the present invention also provides the use of NADPH for the preparation of a medicament for treating heart failure.
- the medicament comprises a pharmaceutically effective amount of NADPH and a pharmaceutically acceptable carrier.
- the carrier is selected from the group consisting of commonly used pharmaceutical excipients, or physiological saline, or distilled water.
- the drug is NADPH according to a conventional process, and a conventional excipient is added to prepare a clinically acceptable tablet, capsule, powder, mixture, pill, granule, syrup, plaster, suppository. , aerosol, ointment or injection.
- the administration mode of the drug is at least one selected from the group consisting of oral administration, injection administration, sublingual administration, rectal administration, transdermal administration, and spray inhalation.
- the present invention has found that NADPH not only has a significant cardiac effect, but also has a mitigating effect on cardiac hypertrophy, and thus can be used as a drug for treating cardiac hypertrophy and heart failure;
- NADPH can increase the activity of Na + -K + -ATPase, Ca 2+ -Mg 2+ -ATPase and total ATPase in myocardial tissue of mice, suggesting that NADPH may pass
- the above mechanism exerts a mitigating effect on cardiac hypertrophy
- NADPH has no significant effect on the blood pressure of normal rats, and the adverse reactions in the treatment of cardiac hypertrophy and heart failure are small.
- Fig. 1(a) shows the effect of NADPH on the cardiac contractile force of the in situ frog heart in Experimental Example 1, and the numerical value indicates the percentage of contractile force compared with normal;
- Fig. 1(b) shows the experimental example 1.
- Fig. 1(c) shows the effect of NADPH on the heart rate of in situ frog heart in experimental example 1;
- Fig. 2(a) shows the effect of NADPH on ISO-induced cardiac hypertrophy in Experimental Example 2
- Figure 2(b) shows the HE staining map of each group of mice in Experimental Example 2
- N (L) is NADPH 1mg/kg
- N(M) represents NADPH 2mg/kg
- N(H) represents NADPH 4mg/kg
- Fig. 3(a) shows the electrocardiogram of each group of mice in Experimental Example 2
- Fig. 3(b) shows the effect of NADPH on the R wave amplitude of the electrocardiogram of ISO-induced mice in Experimental Example 2; Standard deviation; compared with the control group, ### P ⁇ 0.001
- N(L) indicates NADPH 1 mg/kg
- N(M) indicates NADPH 2 mg/kg
- N(H) indicates NADPH 4 mg/kg.
- Figure 4 is the effect of NADPH on cardiac function in mice in Experimental Example 2; N(L) indicates NADPH 1 mg/kg, N(M) indicates NADPH 2 mg/kg, and N(H) indicates NADPH 4 mg/kg. Kg;
- Figure 5 is a graph showing the effect of NADPH on the ATPase content in myocardial tissue of mice in Experimental Example 2; N(L) indicates NADPH 1 mg/kg, and N(M) indicates NADPH 2 mg/kg, and N(H) indicates For NADPH 4mg/kg;
- Figure 6 is the effect of NADPH on the blood pressure of normal rats in Experimental Example 3; NS indicates normal saline, SBP indicates systolic blood pressure, DBP indicates diastolic blood pressure, MBP indicates mean arterial pressure, mean ⁇ standard difference.
- Animal feeding environment room temperature 22 ° C, humidity 50-60%, good ventilation, artificial day and night (12h / 12h), free access to food and water;
- the source of exogenous NADPH drugs can be obtained by artificial synthesis, semi-synthesis, and biological extraction;
- the medulla was fixed on the frog plate, the left and right aorta and inferior vena cava were separated, the inferior vena cava was inserted into the venous cannula, the left aorta was inserted into the arterial cannula, and the right aorta was ligated with Ren's solution (1000 mL: NaCl 6.5 g).
- KCl 0.14g, CaCl 2 0.12g, NaHCO 3 0.2g, NaH 2 PO 4 0.01g, glucose 1g, double distilled water rinse the heart, frog heart clamps the apex, connect the Medlab operating system through the tension transducer, record Normal frog heart beat curve, heart rate and cardiac output, switch into the same amount of low calcium Ren's solution (CaCl 2 content is 1/2 of Ren's solution) to perfuse the heart, when the heart contraction is significantly weakened, add NADPH to the venous cannula (Purity >97%, Roche, 10621706001), recording changes in heart beat curve, heart rate, and cardiac output.
- Fig. 1(a), 1(b), 1(c), and 1(d) that the heart deficiencies are significantly reduced and the cardiac output is decreased after perfusion of the low-calcium solution.
- the contraction amplitude of the isolated frog heart can be significantly increased, the cardiac output is increased, but the heart rate has no significant effect; after 20 minutes of administration, the cardiac effect begins to appear. , the maintenance time is up to 2h.
- NADPH can significantly increase the contraction amplitude of the isolated frog heart and increase the cardiac output, but has no significant effect on the heart rate; that is, NADPH has a significant cardiac effect.
- Animal feeding environment room temperature 22 ° C, humidity 50-60%, good ventilation, artificial day and night (12h / 12h), free access to food and water;
- the source of exogenous NADPH drugs can be obtained by artificial synthesis, semi-synthesis, and biological extraction;
- ATPase kit (A070-6), purchased from Nanjing Jiancheng Bioengineering Research Institute;
- Isoproterenol (ISO) and captopril (Cap) were purchased from Shanghai Maclean Biochemical Technology Co., Ltd.;
- Chloral hydrate is purchased from Sinopharm Chemical Reagent Co., Ltd.;
- Electrocardiograph Kenz, ECG-103.
- Isoproterenol is a non-selective beta-adrenergic receptor agonist. Long-dose administration can increase myocardial contractility and oxygen consumption, and promote intracellular cyclic adenosine monophosphate (cAMP) and sugar. The original synthesis increases the synthesis of total protein and non-shrinking protein in cardiomyocytes, causing cardiac hypertrophy, especially left ventricular hypertrophy.
- cAMP cyclic adenosine monophosphate
- ICR mice were randomly divided into 6 groups: normal control group, model control group - ISO group, positive control group - ISO + Captopril (Cap) 100 mg / kg, ISO + NADPH 1 mg / kg group, ISO + NADPH 2 mg /kg group, ISO+NADPH 4mg/kg group.
- each group was injected subcutaneously (sc) with equal volume of normal saline daily; other groups were injected subcutaneously (sc) ISO twice times, each time 1 mg/kg, 2 times interval 8 h, ISO+ The NADPH 1 mg/kg group, the ISO+NADPH 2 mg/kg group, and the ISO+NADPH 4 mg/kg group were sc ISO every morning. After 4 hours, the corresponding dose of NADPH was intraperitoneally injected. The positive control group was sc ISO every morning, and the corresponding dose was intraperitoneally injected 4 hours later. Cap, model control group was intraperitoneally injected with equal volume of normal saline; continuous administration for 14 days.
- mice were intraperitoneally injected with 4% chloral hydrate 10 mg/kg to remove the chest hair of the mice.
- the high-resolution small animal ultrasound imaging system (VISU ⁇ LSONICS, VEVO2100) was used.
- the probe frequency was 8 MHz, placed on the left side of the sternum, and the standard left was selected.
- the short-axis and long-axis sections of the papillary muscle were combined with M-mode and Doppler ultrasound to measure the ejection fraction (EF) and left ventricular short-axis shortening (FS) of the systolic and diastolic phases of the mouse, respectively.
- the indoor diameter (LVID), left ventricular posterior wall thickness (LVPW), left ventricular anterior wall thickness (LVAW), and left ventricular volume (LVvol) were averaged over three consecutive cardiac cycles.
- mice were intraperitoneally injected with 4% chloral hydrate 10 mL/kg anesthetized, and the needle electrode red was connected with (R) right upper limb, yellow (L) left upper limb, green (LF) left lower limb, black (RF) right lower limb, and electrocardiogram was used.
- the instrument detects the II lead electrocardiogram with a frequency of 50 Hz and a paper speed of 25 mm/s.
- mice After 14 days of administration, the body weight (BW) of the mice was measured, the anesthesia was sacrificed, the heart was opened by chest, the residual blood was washed with physiological saline, the filter paper was blotted and photographed, and the heart weight (HW) and left were weighed.
- the left ventricular tissue of the apex was fixed in 4% neutral formaldehyde solution, dehydrated with gradient ethanol, embedded in paraffin, sectioned, and stained with HE. The photograph was taken under an optical microscope.
- the supernatant of the left ventricular tissue of the mice was taken, and the levels of Na + -K + , Ca 2+ -Mg 2+ and T-ATPase in the myocardial tissue were determined by a kit.
- the heart of the model control group was significantly larger than the normal control group, the positive control group, the ISO+NADPH 1 mg/kg group, the ISO+NADPH 2 mg/kg group, and the ISO+NADPH 4 mg/kg group heart. It has been reduced.
- Fig. 2(b) the pathological examination showed that the myocardial cells of the model control group were hypertrophied by HE staining, the nuclei were deeply stained, and the cell spacing became larger; ISO+NADPH 1 mg/kg group, ISO+NADPH 2 mg/kg group In the ISO+NADPH 4mg/kg group, the decrease of myocardial cell hypertrophy was more obvious with the increase of NADPH dose; this indicates that NADPH can alleviate the pathological changes of ISO-induced mouse cardiomyocyte hypertrophy.
- the heart HWI and LVWI of the model control group increased significantly after ISO treatment for 2 weeks; compared with the model control group, the positive control group, ISO+NADPH 1 mg/kg group, ISO+NADPH 2 mg/kg Heart HWI and LVWI were significantly lower in the group and ISO+NADPH 4 mg/kg group; this indicates that NADPH can effectively alleviate ISO-induced cardiac hypertrophy in mice.
- the QRS complex reflects the changes in potential and time during the depolarization of the left and right ventricles. In the left ventricular hypertrophy, the QRS complex voltage increased in the electrocardiogram and the wave group time prolonged.
- the effect of NADPH on ISO-induced changes in electrocardiogram in mice is shown in Figures 3(a) and 3(b).
- the QRS amplitude of the model control group was significantly higher than that of the normal control group, indicating that the left ventricular hypertrophy occurred in the mice; the positive control group, ISO+NADPH 1 mg/kg group, ISO+NADPH 2 mg The QRS wave voltage of the mice in the /kg group and the ISO+NADPH 4 mg/kg group decreased; this indicates that NADPH has ameliorating effect on cardiac hypertrophy.
- systolic left ventricular diameter LVIDs
- diastolic left ventricular diameter LVIDd
- left ventricular end systolic volume LV Vols
- the left ventricular end-diastolic volume (LV Vold) was significantly increased, while the ejection fraction (EF) and left ventricular short-axis shortening rate (FS) were significantly reduced; this indicates that the model control group developed left ventricular hypertrophy and heart.
- Na+-K+-ATPase relies on ATP to allow Na + efflux and K + influx to maintain Na + and K + levels inside and outside the cell;
- Ca 2+ -Mg 2+ -ATPase relies on ATP to pump intracellular Ca 2+ to The sarcoplasmic reticulum or extracellular to maintain intracellular calcium homeostasis.
- the effect of NADPH on ATPase content in myocardial tissue of mice is shown in Figure 5.
- NADPH can alleviate the pathological changes of myocardial hypertrophy in mice and alleviate cardiac hypertrophy; (2) NADPH can increase Na + -K + -ATPase and Ca 2+ -Mg 2 in myocardial tissue of mice + -ATPase and total ATPase activity to maintain intracellular ionic homeostasis.
- Animal feeding environment room temperature 22 ° C, humidity 50-60%, good ventilation, artificial day and night (12h / 12h), free access to food and water;
- Non-invasive blood pressure detection system Karl Scientific, CODA20496.
- the blood pressure of non-invasive tail artery was measured in rats.
- the blood pressure of awake rats was measured by volumetric pressure recording sensor.
- the rats were kept for 2 days.
- the blood pressure of the rats was measured by non-invasive blood pressure detection system.
- the experimental environment was quiet and constant, and the adaptive training started 3 days later.
- Formal experiment. Divided into two groups: saline group; NADPH 10mg/kg group. Two rats were tested in each experiment.
- the baseline blood pressure was measured first. After the basal blood pressure was stable, one intravenous saline was injected at 2 mL/kg, and the other intravenously was administered with 0.5% NADPH 2 mL/kg.
- the intravenous drug was recorded for 30 min, 60 min. Blood pressure after 90 min and 120 min.
- NADPH had no significant effect on blood pressure in normal rats.
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Abstract
Disclosed is the use of NADPH in the preparation of a medicine for treating cardiac hypertrophy and heart failure. NADPH can improve the activity of a Na+-K+-ATP enzyme, a Ca2+-Mg2+-ATP enzyme and a total ATP enzyme in the myocardium tissue of a mouse; in addition, NADPH has no obvious influence on the blood pressure of a normal rat, and causes less adverse reactions during the treatment of heart failure and cardiac hypertrophy.
Description
交叉引用cross reference
本申请要求在2017年2月21日提交中国专利局、申请号为201710093339.4、发明名称为“NADPH在制备治疗心肌肥厚与心力衰竭的药物中的应用”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。This application claims priority to Chinese Patent Application No. 200910093339.4, entitled "Application of NADPH in the Preparation of Drugs for the Treatment of Cardiac Hypertrophy and Heart Failure", filed on February 21, 2017, the entire contents of which is hereby incorporated by reference. This is incorporated herein by reference.
本发明属于药物领域,具体涉及NADPH在制备治疗心肌肥厚与心力衰竭的药物中的应用。The invention belongs to the field of medicines, and particularly relates to the application of NADPH in preparing medicines for treating cardiac hypertrophy and heart failure.
还原型烟酰胺腺嘌呤二核苷酸磷酸(triphosphopyridine nucleotide,NADPH)由葡萄糖经过磷酸戊糖途径(PPP)代谢产生,作为细胞内最为重要的电子供体和生物合成的还原剂,可为还原性生物合成提供氢离子。NADPH是谷胱甘肽(GSH)还原酶的辅酶,可使氧化型谷胱甘肽(GSSG)生成还原型GSH,维持还原型GSH的正常含量。GSH是细胞内重要的抗氧化剂,可保护一些含巯基的蛋白质、脂肪和蛋白酶类免受氧化剂的破坏,特别在维持红细胞膜的完整性方面起着重要作用。NADPH除了参与胆固醇、脂肪酸、单加氧酶系、类固醇激素等的生物合成,还参与体内羟化反应和药物、毒物及某些激素的生物转化;例如,NADPH可利用解毒细胞的电子供体,通过体内代谢减少生物体氧化型化合物,维持其氧化还原的平衡,在氧化防御系统发挥重要作用。NADPH也可以借助于异柠檬酸穿梭作用进入呼吸链产生ATP:由于线粒体内膜对物质的通透性很低,线粒体外产生的NADPH不能直接进入呼吸链被氧化。NADPH上的H可以在异柠檬酸脱氢酶的作用下被交给NAD+,然后由NAD+进入呼吸链产生能量。细胞能量代谢的维持和减少ROS(活性氧簇)对细胞生存,
特别对缺血缺氧的组织至关重要,普遍认为能量代谢障碍和氧化应激是心脑缺血疾病的重要机制。Reduced nicotinamide adenine dinucleotide phosphate (NADPH) is produced by the metabolism of glucose via the pentose phosphate pathway (PPP). It is the most important electron donor and biosynthesis reducing agent in the cell and can be reduced. Biosynthesis provides hydrogen ions. NADPH is a coenzyme of glutathione (GSH) reductase, which produces oxidized glutathione (GSSG) to produce reduced GSH and maintains the normal content of reduced GSH. GSH is an important antioxidant in the cell, which protects some thiol-containing proteins, fats and proteases from oxidants, especially in maintaining the integrity of erythrocyte membranes. In addition to its involvement in the biosynthesis of cholesterol, fatty acids, monooxygenases, steroids, etc., NADPH is also involved in the hydroxylation of the body and the biotransformation of drugs, poisons and certain hormones; for example, NADPH can utilize the electron donor of detoxified cells. The metabolism of the organism is reduced by metabolism in the body, and the balance of redox is maintained, which plays an important role in the oxidation defense system. NADPH can also enter the respiratory chain by means of isocitrate shuttle to produce ATP: due to the low permeability of the mitochondrial inner membrane to the substance, the NADPH produced by the mitochondria in vitro cannot be directly oxidized into the respiratory chain. H on NADPH can be delivered to NAD+ under the action of isocitrate dehydrogenase, and then energy is generated by NAD+ entering the respiratory chain. Maintenance of cellular energy metabolism and reduction of ROS (reactive oxygen species) for cell survival,
Especially important for ischemia and hypoxia, it is generally believed that energy metabolism disorder and oxidative stress are important mechanisms of cardio-cerebral ischemia.
心肌肥厚(cardiac hypertrophy)尤其是左室肥厚(Left ventricular hypertrophy,LVH)是心脏对慢性压力或容量超负荷产生的靶器官反应。我国现有高血压病患者约2.66亿,其中三分之一的高血压患者可伴发LVH。心肌肥厚是一种极其重要的心血管危险因素,能增加冠心病、充血性心衰、中风或暂时缺血性心脏病发作等发生猝死的机率;更为重要的是,心肌肥厚也是慢性心力衰竭发生和发展的重要机制之一。Cardiac hypertrophy, especially left ventricular hypertrophy (LVH), is the target organ response of the heart to chronic stress or volume overload. There are about 266 million patients with hypertension in China, and one-third of them with hypertension can be associated with LVH. Cardiac hypertrophy is an extremely important cardiovascular risk factor, which can increase the risk of sudden death such as coronary heart disease, congestive heart failure, stroke or transient ischemic heart attack; more importantly, cardiac hypertrophy is also chronic heart failure. One of the important mechanisms of occurrence and development.
心力衰竭(heart failure)是指在正常的静脉回流情况下,由于心输出量绝对或相对减少,不能满足机体代谢需要而引起以循环障碍为主的综合征。临床上,以肺循环和(或)体循环瘀血以及组织血液灌注不足为主要特征,按心力衰竭的发展过程,可分为急性心力衰竭和慢性心力衰竭;急性心力衰竭是指心输出量短期内急剧下降甚至丧失泵血功能,其发展迅速,根据严重程度可表现为昏厥、心源性休克、急性肺水肿、心脏骤停;慢性心力衰竭亦称充血性心力衰竭或慢性心功能不全,是指由于致病因素使心脏长期处于压力和(或)容量负荷过重状态,造成心脏贮备力耗竭,逐渐丧失代偿功能,心输出量绝对或相对不足,不能维持身体代谢需要。心力衰竭的病因是多重而复杂的,主要包括心肌收缩和/或舒张功能障碍和心脏负荷长期过重及心室充盈受限,心力衰竭实际是心脏功能由代偿向失代偿转化的结果;心力衰竭尤其是慢性心力衰竭时,机体防止心输出量减少产生的代偿反应包括神经内分泌反射和心肌构型重建,心肌肥厚就是心脏构型重建的主要表现。心肌肥厚早期对心功能具有一定的代偿意义;然而,在心肌肥厚晚期,病理性心肌肥厚伴随着心肌细胞凋亡、心肌成纤维细胞增殖和心肌纤维化间质增生,促使心脏功能逐渐由代偿转化为失代偿,参与了心力衰竭的发生和发展。Heart failure refers to a syndrome in which circulatory disorders are predominant due to the absolute or relative decrease in cardiac output during normal venous return. Clinically, pulmonary circulation and/or systemic blood stasis and tissue hypoperfusion are the main features. According to the development of heart failure, acute heart failure and chronic heart failure can be divided into acute heart failure. Acute heart failure refers to acute cardiac output in a short period of time. Decreased or even lost the function of pumping blood, its rapid development, according to the severity can be expressed as fainting, cardiogenic shock, acute pulmonary edema, cardiac arrest; chronic heart failure, also known as congestive heart failure or chronic heart failure, refers to The disease-causing factors cause the heart to be under stress and/or over-loading for a long time, causing the heart to be exhausted and gradually losing compensatory function. The cardiac output is absolutely or relatively insufficient to maintain the body's metabolic needs. The causes of heart failure are multiple and complex, mainly including myocardial contraction and / or diastolic dysfunction and long-term cardiac load and ventricular filling limitation. Heart failure is actually the result of cardiac function from compensation to decompensation; In depletion, especially in chronic heart failure, the compensatory response of the body to prevent the reduction of cardiac output includes neuroendocrine reflex and myocardial configuration reconstruction. Cardiac hypertrophy is the main manifestation of cardiac reconstruction. Early cardiac hypertrophy has a certain compensatory significance for cardiac function; however, in the late stage of cardiac hypertrophy, pathological cardiac hypertrophy is accompanied by cardiomyocyte apoptosis, myocardial fibroblast proliferation and myocardial fibrosis interstitial hyperplasia, which promotes cardiac function gradually. The compensation is decompensated and participates in the occurrence and development of heart failure.
目前,临床上治疗心肌肥厚或心力衰竭的药物相近,主要是抑制心衰或心肌肥厚过程中神经内分泌的过度激活,纠正血流动力学紊乱,常用的治疗药物包括:(1)血管紧张素转换酶抑制剂(ACEIs))和血管紧张素Ⅱ受体I阻断剂
(ARBs),作用机制为:减少血管紧张素(ACEIs)的生成和作用,舒张动静脉,降低心脏前后负荷,并可逆转心血管重塑和左心室肥厚;(2)利尿剂,作用机制为:通过排除机体多余的水分,减少有效循环血量,减轻心脏前负荷,消除组织间隙水肿或肺水肿,螺内酯等醛固酮受体拮抗剂还可对抗醛固酮的心脏重塑作用;(3)钙拮抗剂,作用机制为:抑制胞外Ca2+内流,使胞内游离Ca2+浓度下降,舒张血管,降低血压,减轻前和/或后负荷来改善心脏功能;(4)β受体阻滞剂,作用机制为:阻断β受体,抑制交感神经系统活性及肾素释放,降低血压,消退或部分逆转心脏构型重建,上调β受体,恢复心脏对交感神经递质的敏感性;(5)正性肌力药物,作用机制为:如洋地黄类及非苷性正性肌力药(包括磷酸二酯酶抑制剂和β受体激动剂),直接加强心肌收缩力,增加心输出量,减少心脏收缩末期残余血量,降低前负荷,恢复心功能。上述第(1)-(4)类药物缓解或逆转心肌肥厚,逐渐改善心功能,适用于心肌肥厚或慢性心力衰竭的长期治疗,但由于它们不具有强心作用,在心肌肥厚向心衰发展的失代偿期疗效一般,且不能用于急性心力衰竭的治疗;而第(5)类药物,临床应用时其不良反应较多而严重,如:增加心律失常的风险,甚至增加心衰的死亡率。At present, the clinical treatment of cardiac hypertrophy or heart failure drugs are similar, mainly to inhibit excessive activation of neuroendocrine during heart failure or cardiac hypertrophy, to correct hemodynamic disorders, commonly used treatments include: (1) angiotensin conversion Enzyme inhibitors (ACEIs) and angiotensin II receptor I blockers (ARBs), which act by reducing the production and action of angiotensin (ACEIs), relaxing the arteries and veins, reducing the load before and after the heart, and reversing Cardiovascular remodeling and left ventricular hypertrophy; (2) Diuretics, the mechanism of action is: by eliminating excess water in the body, reducing effective circulating blood volume, reducing cardiac preload, eliminating interstitial edema or pulmonary edema, aldosterone receptors such as spironolactone Antagonists can also resist the cardiac remodeling of aldosterone; (3) calcium antagonists, the mechanism of action is: inhibition of extracellular Ca 2+ influx, decrease intracellular free Ca 2+ concentration, relax blood vessels, lower blood pressure, reduce before And / or afterload to improve cardiac function; (4) beta blockers, the mechanism of action: blocking beta receptors, inhibiting sympathetic nervous system activity and renin release, lowering blood pressure, eliminating Or partial reversal of cardiac conformation, up-regulation of beta receptors, restoring cardiac sensitivity to sympathetic neurotransmitters; (5) positive inotropic drugs, mechanisms of action such as digitalis and non-glycoactive positive inotropic drugs (including phosphodiesterase inhibitors and beta-agonists), directly strengthen myocardial contractility, increase cardiac output, reduce residual blood volume at the end of systole, reduce preload, and restore heart function. The above-mentioned drugs (1)-(4) alleviate or reverse cardiac hypertrophy and gradually improve cardiac function, and are suitable for long-term treatment of cardiac hypertrophy or chronic heart failure, but because they do not have a cardiac effect, the development of cardiac hypertrophy to heart failure The decompensation period is generally effective and cannot be used for the treatment of acute heart failure; while the category (5) drugs have more serious adverse reactions in clinical application, such as increasing the risk of arrhythmia and even increasing heart failure. mortality rate.
目前,尚无NADPH用于治疗心肌肥厚与心力衰竭的报道。Currently, there is no report of NADPH for the treatment of cardiac hypertrophy and heart failure.
发明内容Summary of the invention
为此,本发明提出NADPH在制备治疗心肌肥厚与心力衰竭的药物中的应用。To this end, the present invention proposes the use of NADPH in the preparation of a medicament for the treatment of cardiac hypertrophy and heart failure.
为解决上述技术问题,本发明是通过以下技术方案来实现的:In order to solve the above technical problems, the present invention is achieved by the following technical solutions:
根据本申请的一个方面,本发明提供NADPH在制备治疗心肌肥厚的药物中的应用。According to one aspect of the present application, the present invention provides the use of NADPH for the preparation of a medicament for the treatment of cardiac hypertrophy.
根据本申请的另一个方面,本发明还提供NADPH在制备治疗心力衰竭的药物中的应用。
According to another aspect of the present application, the present invention also provides the use of NADPH for the preparation of a medicament for treating heart failure.
优选地,本发明上述应用,所述药物包括药学上有效量的NADPH和药学上可接受的载体。Preferably, in the above use of the invention, the medicament comprises a pharmaceutically effective amount of NADPH and a pharmaceutically acceptable carrier.
进一步优选地,本发明上述应用,所述载体选自常用的药用辅料、或者生理盐水、或者蒸馏水。Further preferably, in the above application of the present invention, the carrier is selected from the group consisting of commonly used pharmaceutical excipients, or physiological saline, or distilled water.
进一步优选地,本发明上述应用,所述药物为NADPH按照常规工艺,加入常规辅料制成临床上可接受的片剂、胶囊剂、散剂、合剂、丸剂、颗粒剂、糖浆剂、贴膏剂、栓剂、气雾剂、软膏剂或注射剂。Further preferably, in the above application of the present invention, the drug is NADPH according to a conventional process, and a conventional excipient is added to prepare a clinically acceptable tablet, capsule, powder, mixture, pill, granule, syrup, plaster, suppository. , aerosol, ointment or injection.
进一步优选地,本发明上述应用,所述药物的给药方式选自口服给药、注射给药、舌下给药、直肠给药、经皮给药、喷雾吸入中的至少一种。Further preferably, in the above application of the present invention, the administration mode of the drug is at least one selected from the group consisting of oral administration, injection administration, sublingual administration, rectal administration, transdermal administration, and spray inhalation.
本发明的上述技术方案相比现有技术具有以下优点:The above technical solution of the present invention has the following advantages over the prior art:
(1)本发明通过研究发现,NADPH不仅具有显著的强心作用,而且能够对心肌肥厚有缓解作用,因此可以作为治疗心肌肥厚与心力衰竭的药物;(1) The present invention has found that NADPH not only has a significant cardiac effect, but also has a mitigating effect on cardiac hypertrophy, and thus can be used as a drug for treating cardiac hypertrophy and heart failure;
(2)本发明通过研究进一步发现,NADPH能够提高小鼠的心肌组织中的Na+-K+-ATP酶、Ca2+-Mg2+-ATP酶和总ATP酶的活性,推测NADPH可能通过上述机制发挥对心肌肥厚的缓解作用;(2) The present inventors further found that NADPH can increase the activity of Na + -K + -ATPase, Ca 2+ -Mg 2+ -ATPase and total ATPase in myocardial tissue of mice, suggesting that NADPH may pass The above mechanism exerts a mitigating effect on cardiac hypertrophy;
(3)此外,NADPH对正常大鼠的血压无明显影响,治疗心肌肥厚与心力衰竭时不良反应较小。(3) In addition, NADPH has no significant effect on the blood pressure of normal rats, and the adverse reactions in the treatment of cardiac hypertrophy and heart failure are small.
为了使本发明的内容更容易被清楚的理解,下面根据本发明的具体实施例并结合附图,对本发明作进一步详细的说明,其中:In order to make the content of the present invention easier to understand, the present invention will be further described in detail below with reference to the accompanying drawings, in which:
图1(a)表示的为实验例1中NADPH对离体原位蛙心的心收缩力的影响,数值表示的为收缩力相比正常的百分比;图1(b)表示的为实验例1中NADPH对离体原位蛙心的心输出量的影响;图1(c)表示的为实验例1中NADPH对离体原位蛙心的心率的影响;图1(d)表示的为实验例1中
NADPH对离体原位蛙心的心收缩力影响的曲线图,平均值±标准差,N=8-10;与正常组相比,*P<0.05,**P<0.01;与低钙相比,#P<0.05,##P<0.01,###P<0.001;Fig. 1(a) shows the effect of NADPH on the cardiac contractile force of the in situ frog heart in Experimental Example 1, and the numerical value indicates the percentage of contractile force compared with normal; Fig. 1(b) shows the experimental example 1. The effect of NADPH on cardiac output of isolated in situ frog heart; Fig. 1(c) shows the effect of NADPH on the heart rate of in situ frog heart in experimental example 1; Fig. 1(d) shows the experiment The effect of NADPH on the cardiac contractility of isolated in situ frog hearts in Example 1, mean ± standard deviation, N = 8-10; compared with the normal group, * P < 0.05, ** P <0.01; compared to low calcium, # P <0.05, ## P <0.01, ### P <0.001;
图2(a)表示的为实验例2中NADPH对ISO致心肌肥厚的影响;图2(b)表示的为实验例2中各组小鼠的心脏HE染色图;图2(c)表示的为实验例2中NADPH对ISO诱导小鼠心肌肥厚中心重指数的影响;测定心脏和左心室的湿重,计算心重指数(HWI=HW/BW)和左心指数(LVWI=LVW/BW),平均值±标准差;与对照组相比,###P<0.001;与ISO组相比,*P<0.05,**P<0.01,***P<0.001;N(L)表示的为NADPH 1mg/kg,N(M)表示的为NADPH 2mg/kg,N(H)表示的为NADPH 4mg/kg;Fig. 2(a) shows the effect of NADPH on ISO-induced cardiac hypertrophy in Experimental Example 2; Figure 2(b) shows the HE staining map of each group of mice in Experimental Example 2; Figure 2(c) shows The effect of NADPH on ISO-induced cardiac hypertrophy center weight index in experimental example 2; the wet weight of the heart and left ventricle was measured, and the heart weight index (HWI=HW/BW) and left heart index (LVWI=LVW/BW) were calculated. Mean ± standard deviation; compared with the control group, ### P<0.001; compared with the ISO group, * P < 0.05, ** P < 0.01, *** P <0.001; N (L) is NADPH 1mg/kg, N(M) represents NADPH 2mg/kg, and N(H) represents NADPH 4mg/kg;
图3(a)表示的为实验例2中各组小鼠的心电图;图3(b)表示的为实验例2中NADPH对ISO所致小鼠的心电图的R波波幅的影响;平均值±标准差;与对照组相比,###P<0.001;N(L)表示的为NADPH 1mg/kg,N(M)表示的为NADPH 2mg/kg,N(H)表示的为NADPH 4mg/kg;Fig. 3(a) shows the electrocardiogram of each group of mice in Experimental Example 2; Fig. 3(b) shows the effect of NADPH on the R wave amplitude of the electrocardiogram of ISO-induced mice in Experimental Example 2; Standard deviation; compared with the control group, ### P<0.001; N(L) indicates NADPH 1 mg/kg, N(M) indicates NADPH 2 mg/kg, and N(H) indicates NADPH 4 mg/kg. Kg;
图4是实验例2中NADPH对小鼠心功能的影响;N(L)表示的为NADPH 1mg/kg,N(M)表示的为NADPH 2mg/kg,N(H)表示的为NADPH 4mg/kg;Figure 4 is the effect of NADPH on cardiac function in mice in Experimental Example 2; N(L) indicates NADPH 1 mg/kg, N(M) indicates NADPH 2 mg/kg, and N(H) indicates NADPH 4 mg/kg. Kg;
图5是实验例2中NADPH对小鼠的心肌组织中ATP酶含量的影响;N(L)表示的为NADPH 1mg/kg,N(M)表示的为NADPH 2mg/kg,N(H)表示的为NADPH 4mg/kg;Figure 5 is a graph showing the effect of NADPH on the ATPase content in myocardial tissue of mice in Experimental Example 2; N(L) indicates NADPH 1 mg/kg, and N(M) indicates NADPH 2 mg/kg, and N(H) indicates For NADPH 4mg/kg;
图6是实验例3中NADPH对正常大鼠的血压的影响;NS表示的为生理盐水,SBP表示的为收缩压,DBP表示的为舒张压,MBP表示的为平均动脉压,平均值±标准差。Figure 6 is the effect of NADPH on the blood pressure of normal rats in Experimental Example 3; NS indicates normal saline, SBP indicates systolic blood pressure, DBP indicates diastolic blood pressure, MBP indicates mean arterial pressure, mean ± standard difference.
实验例Experimental example
下述各实验例证明本发明所述的技术效果。
Each of the following experiments exemplifies the technical effects described in the present invention.
实验例1 NADPH对离体原位蛙心的强心作用的实验 Experimental Example 1 Experiment of the cardiac effect of NADPH on in situ frog heart
(1)实验材料(1) Experimental materials
蟾蜍(60~80g)由苏州大学医学院实验动物中心提供,实验动物使用许可证号:SYXK(苏)2002-0037;蟾蜍 (60~80g) was provided by the Experimental Animal Center of Suzhou University Medical College, and the experimental animal use license number: SYXK (Su) 2002-0037;
动物饲养环境:室温22℃,湿度50-60%,通风良好,人工昼夜(12h/12h),自由摄取食物和水;Animal feeding environment: room temperature 22 ° C, humidity 50-60%, good ventilation, artificial day and night (12h / 12h), free access to food and water;
外源性NADPH药物的来源可以通过人工合成、半合成、生物提取获得;The source of exogenous NADPH drugs can be obtained by artificial synthesis, semi-synthesis, and biological extraction;
(2)实验方法(2) Experimental method
将蟾蜍毁髓后固定于蛙板,分离左右主动脉和下腔静脉,下腔静脉插入静脉套管,左主动脉插入动脉套管,右主动脉结扎,用任氏液(1000mL:NaCl 6.5g、KCl 0.14g、CaCl2 0.12g、NaHCO3 0.2g、NaH2PO4 0.01g、葡萄糖1g、双蒸水)冲洗心脏,蛙心夹夹住心尖,通过张力换能器连接Medlab操作系统,记录正常蛙心搏动曲线、心率及心输出量,换入等量低钙任氏液(CaCl2含量为任氏液的1/2)灌流心脏,当心脏收缩显著减弱时,向静脉套管内加入NADPH(纯度>97%,Roche,10621706001),记录心脏搏动曲线、心率及心输出量变化。The medulla was fixed on the frog plate, the left and right aorta and inferior vena cava were separated, the inferior vena cava was inserted into the venous cannula, the left aorta was inserted into the arterial cannula, and the right aorta was ligated with Ren's solution (1000 mL: NaCl 6.5 g). , KCl 0.14g, CaCl 2 0.12g, NaHCO 3 0.2g, NaH 2 PO 4 0.01g, glucose 1g, double distilled water) rinse the heart, frog heart clamps the apex, connect the Medlab operating system through the tension transducer, record Normal frog heart beat curve, heart rate and cardiac output, switch into the same amount of low calcium Ren's solution (CaCl 2 content is 1/2 of Ren's solution) to perfuse the heart, when the heart contraction is significantly weakened, add NADPH to the venous cannula (Purity >97%, Roche, 10621706001), recording changes in heart beat curve, heart rate, and cardiac output.
(3)实验结果(3) Experimental results
NADPH对离体原位蛙心的影响如图1(a)、1(b)、1(c)、1(d)所示。The effect of NADPH on isolated in situ frog hearts is shown in Figures 1(a), 1(b), 1(c), and 1(d).
由图1(a)、1(b)、1(c)、1(d)可知,离体蛙心经低钙任氏液灌流后,心收缩力辐度显著降低,心输出量减少;在低钙任氏液中加入5μg/mL NADPH或10μg/mLNADPH后,离体蛙心的收缩辐度可以显著提高,心输出量增加,但对心率无显著影响;给药20min后,开始出现强心作用,维持时间长达2h。
It can be seen from Fig. 1(a), 1(b), 1(c), and 1(d) that the heart deficiencies are significantly reduced and the cardiac output is decreased after perfusion of the low-calcium solution. After adding 5μg/mL NADPH or 10μg/mL NADPH to Calcium solution, the contraction amplitude of the isolated frog heart can be significantly increased, the cardiac output is increased, but the heart rate has no significant effect; after 20 minutes of administration, the cardiac effect begins to appear. , the maintenance time is up to 2h.
(4)实验结论(4) Experimental conclusion
NADPH可以显著提高离体蛙心的收缩辐度,增加心输出量,但对心率无显著影响;即:NADPH具有显著的强心作用。NADPH can significantly increase the contraction amplitude of the isolated frog heart and increase the cardiac output, but has no significant effect on the heart rate; that is, NADPH has a significant cardiac effect.
实验例2 小鼠心肌肥厚模型实验 Experimental Example 2 Mouse Cardiac Hypertrophy Model Experiment
(1)实验材料(1) Experimental materials
SPF级ICR小鼠(雄性,体重18~22g)由苏州大学医学院实验动物中心提供,实验动物生产许可证号:XCYK(苏)2002-2009;SPF grade ICR mice (male, weight 18 ~ 22g) were provided by the Experimental Animal Center of Suzhou University Medical College, experimental animal production license number: XCYK (Su) 2002-2009;
动物饲养环境:室温22℃,湿度50-60%,通风良好,人工昼夜(12h/12h),自由摄取食物和水;Animal feeding environment: room temperature 22 ° C, humidity 50-60%, good ventilation, artificial day and night (12h / 12h), free access to food and water;
外源性NADPH药物的来源可以通过人工合成、半合成、生物提取获得;The source of exogenous NADPH drugs can be obtained by artificial synthesis, semi-synthesis, and biological extraction;
ATP酶试剂盒(A070-6),购自南京建成生物工程研究所;ATPase kit (A070-6), purchased from Nanjing Jiancheng Bioengineering Research Institute;
异丙肾上腺素(ISO)和卡托普利(Cap)均购自上海麦克林生化科技有限公司;Isoproterenol (ISO) and captopril (Cap) were purchased from Shanghai Maclean Biochemical Technology Co., Ltd.;
水合氯醛购自国药集团化学试剂有限公司;Chloral hydrate is purchased from Sinopharm Chemical Reagent Co., Ltd.;
心电图仪(Kenz,ECG-103)。Electrocardiograph (Kenz, ECG-103).
(2)实验方法(2) Experimental method
1)异丙肾上腺素致小鼠心肌肥厚模型1) Isoproterenol-induced cardiac hypertrophy in mice
异丙肾上腺素(ISO)是一种非选择性β-肾上腺素受体激动剂,小剂量长期给药能够增加心肌收缩力和耗氧量,并促进胞内环磷酸腺苷(cAMP)和糖原合成,增加心肌细胞总蛋白和非收缩蛋白合成,引起心肌肥厚,尤其是左心室肥厚。
Isoproterenol (ISO) is a non-selective beta-adrenergic receptor agonist. Long-dose administration can increase myocardial contractility and oxygen consumption, and promote intracellular cyclic adenosine monophosphate (cAMP) and sugar. The original synthesis increases the synthesis of total protein and non-shrinking protein in cardiomyocytes, causing cardiac hypertrophy, especially left ventricular hypertrophy.
ICR小鼠随机分为6组,分别为正常对照组、模型对照组—ISO组、阳性对照组—ISO+卡托普利(Cap)100mg/kg、ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组。ICR mice were randomly divided into 6 groups: normal control group, model control group - ISO group, positive control group - ISO + Captopril (Cap) 100 mg / kg, ISO + NADPH 1 mg / kg group, ISO + NADPH 2 mg /kg group, ISO+NADPH 4mg/kg group.
各组的给药方法为:正常对照组每日皮下注射(sc)等容积生理盐水;其他各组每日皮下注射(sc)ISO 2次,每次1mg/kg,2次间隔8h,ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组每天上午sc ISO,4h后腹腔注射相应剂量的NADPH,阳性对照组每天上午sc ISO,4h后腹腔注射相应剂量的Cap,模型对照组腹腔注射等容积生理盐水;连续给药14d。The administration methods of each group were as follows: normal control group was injected subcutaneously (sc) with equal volume of normal saline daily; other groups were injected subcutaneously (sc) ISO twice times, each time 1 mg/kg, 2 times interval 8 h, ISO+ The NADPH 1 mg/kg group, the ISO+NADPH 2 mg/kg group, and the ISO+NADPH 4 mg/kg group were sc ISO every morning. After 4 hours, the corresponding dose of NADPH was intraperitoneally injected. The positive control group was sc ISO every morning, and the corresponding dose was intraperitoneally injected 4 hours later. Cap, model control group was intraperitoneally injected with equal volume of normal saline; continuous administration for 14 days.
2)小鼠超声心动图测定2) Mouse echocardiography
小鼠腹腔注射4%水合氯醛10mg/kg麻醉,脱净小鼠胸部皮毛,采用高分辨率小动物超声影像系统(VISUΛLSONICS,VEVO2100),探头频率为8MHz,置于胸骨左侧,选取标准左室乳头肌短轴切面和长轴切面结合M型和多普勒超声进行检测,分别测量小鼠心脏收缩期和舒张期时射血分数(EF)、左室短轴缩短率(FS)、左室内径(LVID)、左室后壁厚度(LVPW)、左室前壁厚度(LVAW)、左室容积(LVvol),均取连续3个心动周期的平均值。The mice were intraperitoneally injected with 4% chloral hydrate 10 mg/kg to remove the chest hair of the mice. The high-resolution small animal ultrasound imaging system (VISUΛLSONICS, VEVO2100) was used. The probe frequency was 8 MHz, placed on the left side of the sternum, and the standard left was selected. The short-axis and long-axis sections of the papillary muscle were combined with M-mode and Doppler ultrasound to measure the ejection fraction (EF) and left ventricular short-axis shortening (FS) of the systolic and diastolic phases of the mouse, respectively. The indoor diameter (LVID), left ventricular posterior wall thickness (LVPW), left ventricular anterior wall thickness (LVAW), and left ventricular volume (LVvol) were averaged over three consecutive cardiac cycles.
3)小鼠心电图测定3) Determination of mouse electrocardiogram
小鼠腹腔注射4%水合氯醛10mL/kg麻醉,将针状电极红色连与(R)右上肢、黄色(L)左上肢、绿色(LF)左下肢、黑色(RF)右下肢,采用心电图仪检测Ⅱ导联心电图,频率50Hz,纸速25mm/s。The mice were intraperitoneally injected with 4% chloral hydrate 10 mL/kg anesthetized, and the needle electrode red was connected with (R) right upper limb, yellow (L) left upper limb, green (LF) left lower limb, black (RF) right lower limb, and electrocardiogram was used. The instrument detects the II lead electrocardiogram with a frequency of 50 Hz and a paper speed of 25 mm/s.
4)小鼠心脏重量指数的测定4) Determination of mouse heart weight index
给药14d后,测量小鼠体重(body weight,BW),麻醉处死,开胸取心脏,用生理盐水洗净残血,滤纸吸干拍照,称量全心重(heart weight,HW)和左心室重(left ventricle weight,LVW),计算心重指数(HWI=HW/BW)和左心指数(LVWI=LVW/BW)。部分左心室置4%中性甲醛固定,部分左心室置-80℃保存。
After 14 days of administration, the body weight (BW) of the mice was measured, the anesthesia was sacrificed, the heart was opened by chest, the residual blood was washed with physiological saline, the filter paper was blotted and photographed, and the heart weight (HW) and left were weighed. Left ventricle weight (LVW), calculated heart weight index (HWI=HW/BW) and left heart index (LVWI=LVW/BW). Part of the left ventricle was fixed with 4% neutral formaldehyde, and some left ventricles were stored at -80 °C.
5)小鼠心肌组织HE染色5) HE staining of mouse myocardial tissue
取心尖部左心室组织固定于4%中性甲醛溶液,梯度乙醇脱水,常规石蜡包埋,切片,行HE染色,光学显微镜下观察拍照。The left ventricular tissue of the apex was fixed in 4% neutral formaldehyde solution, dehydrated with gradient ethanol, embedded in paraffin, sectioned, and stained with HE. The photograph was taken under an optical microscope.
6)小鼠生化指标测定6) Determination of biochemical indicators in mice
小鼠左心室组织匀浆取上清,应用试剂盒测定心肌组织Na+-K+、Ca2+-Mg2+、T-ATP酶水平。The supernatant of the left ventricular tissue of the mice was taken, and the levels of Na + -K + , Ca 2+ -Mg 2+ and T-ATPase in the myocardial tissue were determined by a kit.
(3)实验结果(3) Experimental results
NADPH对减轻ISO所致小鼠心肌肥厚的影响如图2(a)、2(b)、2(c)所示。The effect of NADPH on reducing ISO-induced cardiac hypertrophy in mice is shown in Figures 2(a), 2(b), and 2(c).
由图2(a)可知,模型对照组小鼠心脏比正常对照组明显增大,阳性对照组、ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组心脏有所缩小。As can be seen from Fig. 2(a), the heart of the model control group was significantly larger than the normal control group, the positive control group, the ISO+NADPH 1 mg/kg group, the ISO+NADPH 2 mg/kg group, and the ISO+NADPH 4 mg/kg group heart. It has been reduced.
由图2(b)可知,病理学检查显示:模型对照组心肌组织经HE染色后心肌细胞肥大,细胞核深染,细胞间距变大;ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组,随着NADPH剂量的增大,心肌细胞肥大现象的减轻越明显;这表明,NADPH能够减轻ISO所致小鼠心肌细胞肥大的病理改变。It can be seen from Fig. 2(b) that the pathological examination showed that the myocardial cells of the model control group were hypertrophied by HE staining, the nuclei were deeply stained, and the cell spacing became larger; ISO+NADPH 1 mg/kg group, ISO+NADPH 2 mg/kg group In the ISO+NADPH 4mg/kg group, the decrease of myocardial cell hypertrophy was more obvious with the increase of NADPH dose; this indicates that NADPH can alleviate the pathological changes of ISO-induced mouse cardiomyocyte hypertrophy.
如图2(c)可知,ISO处理2w后,模型对照组的心脏HWI和LVWI均显著增加;与模型对照组相比,阳性对照组、ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组的心脏HWI和LVWI显著降低;这表明,NADPH能够有效缓解ISO所致小鼠心肌肥厚。As shown in Fig. 2(c), the heart HWI and LVWI of the model control group increased significantly after ISO treatment for 2 weeks; compared with the model control group, the positive control group, ISO+NADPH 1 mg/kg group, ISO+NADPH 2 mg/kg Heart HWI and LVWI were significantly lower in the group and ISO+NADPH 4 mg/kg group; this indicates that NADPH can effectively alleviate ISO-induced cardiac hypertrophy in mice.
QRS波群反映左右心室去极过程中电位和时间的变化。在左心室肥大时,心电图出现QRS波群电压增高,波群时间延长。NADPH对ISO所致小鼠心电图变化的影响如图3(a)、3(b)所示。
The QRS complex reflects the changes in potential and time during the depolarization of the left and right ventricles. In the left ventricular hypertrophy, the QRS complex voltage increased in the electrocardiogram and the wave group time prolonged. The effect of NADPH on ISO-induced changes in electrocardiogram in mice is shown in Figures 3(a) and 3(b).
由图3(a)、3(b)可知,模型对照组QRS波幅明显高于正常对照组,表明小鼠发生左室心肌肥厚;阳性对照组、ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组小鼠的QRS波电压均有所降低;这表明NADPH对心肌肥厚有缓解作用。As can be seen from Figures 3(a) and 3(b), the QRS amplitude of the model control group was significantly higher than that of the normal control group, indicating that the left ventricular hypertrophy occurred in the mice; the positive control group, ISO+NADPH 1 mg/kg group, ISO+NADPH 2 mg The QRS wave voltage of the mice in the /kg group and the ISO+NADPH 4 mg/kg group decreased; this indicates that NADPH has ameliorating effect on cardiac hypertrophy.
NADPH对小鼠心功能的影响如表1和图4所示。The effects of NADPH on cardiac function in mice are shown in Table 1 and Figure 4.
表1 NADPH对小鼠心功能的影响Table 1 Effect of NADPH on cardiac function in mice
由表1和图4可知,(1)与正常对照组相比,模型对照组小鼠的收缩期左室内径(LVIDs)、舒张期左室内径(LVIDd)、左室收缩末期容积(LV Vols)、左室舒张末期容积(LV Vold)显著升高,而射血分数(EF)、左室短轴缩短率(FS)明显降低;这表明,模型对照组小鼠发生左室心肌肥厚、心功能降低;(2)阳性对照组、ISO+NADPH 1mg/kg组、ISO+NADPH 2mg/kg组、ISO+NADPH 4mg/kg组小鼠的上述指标有一定程度改善,尤其ISO+NADPH 2mg/kg组小鼠的EF和FS有提高的趋势;这表明NADPH对ISO所致的心肌肥厚及心功能缺损有缓解作用。As can be seen from Table 1 and Figure 4, (1) systolic left ventricular diameter (LVIDs), diastolic left ventricular diameter (LVIDd), and left ventricular end systolic volume (LV Vols) in the model control group compared with the normal control group. The left ventricular end-diastolic volume (LV Vold) was significantly increased, while the ejection fraction (EF) and left ventricular short-axis shortening rate (FS) were significantly reduced; this indicates that the model control group developed left ventricular hypertrophy and heart. Reduced function; (2) The above indicators of positive control group, ISO+NADPH 1mg/kg group, ISO+NADPH 2mg/kg group and ISO+NADPH 4mg/kg group have improved to some extent, especially ISO+NADPH 2mg/kg The EF and FS of the group of mice showed an increasing trend; this indicates that NADPH has a mitigating effect on ISO-induced cardiac hypertrophy and cardiac dysfunction.
Na+-K+-ATP酶依赖ATP使Na+外流和K+内流,以维持细胞内外的Na+,K+水平;Ca2+-Mg2+-ATP酶依赖ATP将胞内Ca2+泵至肌浆网或胞外,以维持胞内钙离子稳态。NADPH对小鼠的心肌组织中ATP酶含量的影响如图5所示。
Na+-K+-ATPase relies on ATP to allow Na + efflux and K + influx to maintain Na + and K + levels inside and outside the cell; Ca 2+ -Mg 2+ -ATPase relies on ATP to pump intracellular Ca 2+ to The sarcoplasmic reticulum or extracellular to maintain intracellular calcium homeostasis. The effect of NADPH on ATPase content in myocardial tissue of mice is shown in Figure 5.
由图5可知,与模型对照组相比,ISO+NADPH 1mg/kg组、ISO+NADPH2mg/kg组、ISO+NADPH 4mg/kg组小鼠的心肌组织中的Na+-K+-ATP酶、Ca2+-Mg2+-ATP酶和总ATP酶活性均显著升高。As can be seen from Fig. 5, compared with the model control group, Na + -K + -ATPase in the myocardial tissue of the ISO+NADPH 1 mg/kg group, the ISO+NADPH 2 mg/kg group, and the ISO+NADPH 4 mg/kg group, Both Ca 2+ -Mg 2+ -ATPase and total ATPase activity were significantly increased.
(4)实验结论(4) Experimental conclusion
(1)NADPH能够减轻小鼠心肌细胞肥大的病理改变,对心肌肥厚有缓解作用;(2)NADPH能够提高小鼠的心肌组织中的Na+-K+-ATP酶、Ca2+-Mg2+-ATP酶和总ATP酶活性,维持细胞内离子稳态。(1) NADPH can alleviate the pathological changes of myocardial hypertrophy in mice and alleviate cardiac hypertrophy; (2) NADPH can increase Na + -K + -ATPase and Ca 2+ -Mg 2 in myocardial tissue of mice + -ATPase and total ATPase activity to maintain intracellular ionic homeostasis.
实验例3 NADPH对正常大鼠的血压的影响 Experimental Example 3 Effect of NADPH on blood pressure in normal rats
(1)实验材料(1) Experimental materials
SD大鼠(雄性,体重250~300g)由苏州大学医学院实验动物中心提供;SD rats (male, weight 250-300 g) were provided by the Experimental Animal Center of Suzhou University Medical College;
动物饲养环境:室温22℃,湿度50-60%,通风良好,人工昼夜(12h/12h),自由摄取食物和水;Animal feeding environment: room temperature 22 ° C, humidity 50-60%, good ventilation, artificial day and night (12h / 12h), free access to food and water;
无创血压检测系统(Kent Scientific,CODA20496)。Non-invasive blood pressure detection system (Kent Scientific, CODA20496).
(2)实验方法(2) Experimental method
大鼠无创尾动脉血压测定:采用容量压力记录传感器无创测量清醒大鼠血压,大鼠正常饲养2天,应用无创血压检测系统测量大鼠血压,实验环境控制安静、恒温,适应性训练3天后开始正式实验。分为两组:生理盐水组;NADPH 10mg/kg组。每次实验进行2只大鼠,先测量记录基础血压,基础血压平稳后,一只静脉注射生理盐水2mL/kg,另一只静脉注射0.5%NADPH 2mL/kg,记录静脉注射药物30min、60min、90min、120min后的血压。The blood pressure of non-invasive tail artery was measured in rats. The blood pressure of awake rats was measured by volumetric pressure recording sensor. The rats were kept for 2 days. The blood pressure of the rats was measured by non-invasive blood pressure detection system. The experimental environment was quiet and constant, and the adaptive training started 3 days later. Formal experiment. Divided into two groups: saline group; NADPH 10mg/kg group. Two rats were tested in each experiment. The baseline blood pressure was measured first. After the basal blood pressure was stable, one intravenous saline was injected at 2 mL/kg, and the other intravenously was administered with 0.5% NADPH 2 mL/kg. The intravenous drug was recorded for 30 min, 60 min. Blood pressure after 90 min and 120 min.
(3)实验结果(3) Experimental results
NADPH对正常大鼠的血压的影响如图6所示。
The effect of NADPH on blood pressure in normal rats is shown in Figure 6.
由图6可知,NADPH在给药30min、60min、90min、120min后,正常大鼠的收缩压、舒张压、平均血压和脉压差与给药前相比无显著差异,且在各时间点与生理盐水组也无统计学差异(P>0.05)。It can be seen from Fig. 6 that after 30 minutes, 60 minutes, 90 minutes, and 120 minutes of NADPH administration, the systolic blood pressure, diastolic blood pressure, mean blood pressure, and pulse pressure difference of normal rats were not significantly different from those before administration, and at each time point. There was no significant difference in the saline group (P>0.05).
(4)实验结论(4) Experimental conclusion
NADPH对正常大鼠的血压无明显影响。NADPH had no significant effect on blood pressure in normal rats.
显然,上述实施例仅仅是为清楚地说明所作的举例,而并非对实施方式的限定。对于所属领域的普通技术人员来说,在上述说明的基础上还可以做出其它不同形式的变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本发明创造的保护范围之中。
It is apparent that the above-described embodiments are merely illustrative of the examples, and are not intended to limit the embodiments. Other variations or modifications of the various forms may be made by those skilled in the art in light of the above description. There is no need and no way to exhaust all of the implementations. Obvious changes or variations resulting therefrom are still within the scope of the invention.
Claims (6)
- NADPH在制备治疗心肌肥厚的药物中的应用。The application of NADPH in the preparation of a medicament for treating cardiac hypertrophy.
- NADPH在制备治疗心力衰竭的药物中的应用。The use of NADPH in the preparation of a medicament for the treatment of heart failure.
- 根据权利要求1或2所述的应用,其特征在于,所述药物包括药学上有效量的NADPH和药学上可接受的载体。The use according to claim 1 or 2, wherein the medicament comprises a pharmaceutically effective amount of NADPH and a pharmaceutically acceptable carrier.
- 根据权利要求3所述的应用,其特征在于,所述载体选自常用的药用辅料、或者生理盐水、或者蒸馏水。The use according to claim 3, characterized in that the carrier is selected from the usual pharmaceutical excipients, or physiological saline, or distilled water.
- 根据权利要求1-4任一项所述的应用,其特征在于,所述药物为NADPH按照常规工艺,加入常规辅料制成临床上可接受的片剂、胶囊剂、散剂、合剂、丸剂、颗粒剂、糖浆剂、贴膏剂、栓剂、气雾剂、软膏剂或注射剂。The use according to any one of claims 1 to 4, wherein the drug is NADPH, and a conventional excipient is added according to a conventional process to prepare a clinically acceptable tablet, capsule, powder, mixture, pill, granule. A syrup, a syrup, a plaster, a suppository, an aerosol, an ointment or an injection.
- 根据权利要求1-5任一项所述的应用,其特征在于,所述药物的给药方式选自口服给药、注射给药、舌下给药、直肠给药、经皮给药、喷雾吸入中的至少一种。 The use according to any one of claims 1 to 5, wherein the administration mode of the drug is selected from the group consisting of oral administration, injection administration, sublingual administration, rectal administration, transdermal administration, and spraying. At least one of inhalation.
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