[内伦比尼斯叶片中的类化合物及其低脂作用]
Jian Jiang1, Qian-Nan Xu1, Li Che2
1School of Pharmaceutical Sciences, Xiamen University Xiamen 361000, China.
概括
研究人员从Nelumbinis Folium中分离出了四种类化合物,其中包括一种新的化合物,lotustine B.N-methylasimilobine在人类肝瘤细胞模型中显示出潜在的低脂效应,降低脂质水平.
科学领域:
- 自然产品化学 自然产品化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 莲花叶 (Nelumbinis folium) 是一种传统的草药.
- 类化合物是一种具有多种生物活动的自然化合物.
- 超脂血症是一种血脂水平升高的情况,增加心血管风险.
研究的目的:
- 从Nelumbinis Folium中分离和识别类化合物.
- 用人类肝瘤 (HepG2) 细胞模型评估分离的类化合物的低脂性影响.
主要方法:
- 使用70%乙醇提取化物.
- 使用凝列染色学,ODS列染色学和准备型HPLC进行隔离和净化.
- 通过NMR光谱学,HRMS和循环二元化阐明结构.
- 在体外评估对HepG2细胞和油红色O染色的低脂性影响.
主要成果:
- 他们分离了四种类化合物:一种新化合物 (洛图斯B,1),以及三种已知的化合物 (努西费林,2; 脱水诺西费林,3; N-甲基拉西米洛宾,4).
- 在HepG2细胞中,N-methylasimilobine (4) 显著降低了HepG2细胞中的总胆固醇和甘油三水平.
- 油红色O染色证实了化合物4的降脂作用.
结论:
- 尼伦比尼斯叶片含有各种各样的化物,具有潜在的治疗应用.
- N-甲基西米洛宾表现出有前途的低脂性活性,这需要进一步研究超脂症治疗.
更多相关视频
相关概念视频
01:20Lipid-Lowering Drugs: Statins and Miscellaneous Agents
531
Hyperlipidemia, a medical condition often referred to as high cholesterol, is characterized by abnormally elevated levels of lipids in the bloodstream. When present in excess, these lipids, specifically cholesterol and triglycerides, can lead to serious health complications, often involving cardiovascular diseases. Illnesses like atherosclerosis, heart attacks, and pancreatitis have all been linked to untreated hyperlipidemia. This means controlling and regulating cholesterol and triglyceride...
531
01:17Antihypertensive Drugs: Action of β1 Blockers
306
β1-receptors are primarily located in the heart and kidneys. In cardiac myocytes, these receptors interact with neurotransmitters released by the sympathetic nervous system during heightened activity or danger. As a result, β1-receptors get activated, initiating a series of biochemical processes. Excessive activation of beta receptors due to chronic stress can abnormally increase heart rate and contractility, resulting in high blood pressure or hypertension. To counteract this,...
306
01:27Phase I Reactions: Reductive Reactions
174
Phase I biotransformation reductive reactions are chemical processes that modify drugs by introducing or revealing polar functional groups via reduction. Enzymes called reductases catalyze these reactions, playing a pivotal role in drug metabolism by transforming lipophilic drugs into more polar, water-soluble metabolites for easy excretion. An essential type of reductive reaction is the carbonyl group reduction, where aldehydes and ketones are reduced to alcohols. An example is the...
174
01:28Antihypertensive Drugs: Types of β-Blockers
578
β receptors are classified into three subclasses: β1, β2, and β3. β1 receptors are primarily located in the heart and kidneys. When they get activated, they increase heart rate, contractility, and renin release. This process enhances blood pressure and aids in stress management. In contrast, β2 receptors are situated mainly in the lungs, blood vessels, and skeletal muscles. Upon activation, they trigger smooth muscle relaxation, causing bronchodilation and...
578
01:18Antihypertensive Drugs: Action of Calcium Channel Blockers
455
Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
455
01:16Antianginal Drugs: Nitrates and β-Blockers
517
In cardiovascular health, antianginal drugs combat angina pectoris — a condition marked by chest pain owing to diminished blood flow to the heart.
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
Organic nitrates, such as nitroglycerin, play a pivotal role. Once metabolized, they liberate nitric oxide, a molecular marvel. Nitric oxide triggers guanylyl cyclase and augments cGMP production. This biochemical cascade orchestrates the relaxation of vascular smooth muscles, ushering in vasodilation and enhancing coronary blood flow....
517