慢性阻塞性肺疾病是危害人类健康的常见病,反复发作的症状及进行性下降的肺功能大大降低了患者的生活质量。目前对COPD的治疗主要以缓解症状,减少急性发作为主,但难以延缓肺功能的减退,导致COPD的死亡率仍居高不下。近期研究发现肾素–...慢性阻塞性肺疾病是危害人类健康的常见病,反复发作的症状及进行性下降的肺功能大大降低了患者的生活质量。目前对COPD的治疗主要以缓解症状,减少急性发作为主,但难以延缓肺功能的减退,导致COPD的死亡率仍居高不下。近期研究发现肾素–血管紧张素系统(Ras)在肺组织局部高度表达,与多种肺疾病密切相关,血管紧张素转换酶抑制剂(ACEI)及血管紧张素-1型受体拮抗剂(ARB)的使用可减轻COPD的炎症反应,减少肺损伤,改善肺功能。因此,本文就RAS对COPD发展的影响做一综述。Chronic obstructive pulmonary disease (COPD) is a common disease that endangers human health. The recurrent symptoms and the progressively declining lung function have greatly reduced the quality of life of patients. At present, the treatment of COPD mainly focuses on relieving symptoms and reducing acute exacerbations, but it is difficult to delay the decline of lung function, resulting in the still high mortality rate of COPD. Recent studies have found that the renin-angiotensin system (RAS) is highly expressed in local lung tissues and is closely related to a variety of lung diseases. The use of angiotensin-converting enzyme inhibitors (ACEI) and angiotensin type-1 receptor antagonists (ARB) can alleviate the inflammatory response of COPD, reduce lung injury and improve lung function. Therefore, this article reviews the impact of RAS on the development of COPD.展开更多
目的考察甘遂醋制前后对癌性腹水模型大鼠泻水逐饮功效的差异。方法以癌性腹水模型大鼠为研究对象,呋塞米为阳性药,分组连续7 d ig生、醋甘遂粉末及醇提加水提物,考察其对大鼠尿量,腹水量,尿钠、钾、氯离子水平,尿液p H值,肾素-血管紧张...目的考察甘遂醋制前后对癌性腹水模型大鼠泻水逐饮功效的差异。方法以癌性腹水模型大鼠为研究对象,呋塞米为阳性药,分组连续7 d ig生、醋甘遂粉末及醇提加水提物,考察其对大鼠尿量,腹水量,尿钠、钾、氯离子水平,尿液p H值,肾素-血管紧张素II-醛固酮系统(RAAS),抗利尿激素(ADH)水平的影响。结果与模型组比较,各给药组大鼠尿量显著增加(P<0.05、0.01);腹水量,尿钠、钾、氯离子水平,尿液p H值显著减少(P<0.01);血清肾素(PRA)、血管紧张素II(Ang II)、醛固酮(ALD)、ADH水平显著降低(P<0.05、0.01)。其中生、醋甘遂粉末给药功效最为显著,且两组间无显著性差异。结论生、醋甘遂均具显著的泻水逐饮功效,对癌性腹水模型大鼠有良好的症状改善作用。展开更多
The novel copper(II) coordination polymer with 2-oxo-propionic acid be nzoyl hydrazone and hexamethylenetetramine ligands, {Cu( μ2-C10H8N2O3)( μ2-C6H 12N4)1/2}n (C10H8N2O32- is the dinegative ion of 2-oxo-propionica...The novel copper(II) coordination polymer with 2-oxo-propionic acid be nzoyl hydrazone and hexamethylenetetramine ligands, {Cu( μ2-C10H8N2O3)( μ2-C6H 12N4)1/2}n (C10H8N2O32- is the dinegative ion of 2-oxo-propionicacid benzoyl hyd razone), has been synthesized and characterized by elemental analysis and IR spe ctroscopy. The crystal structure was determined by single crystal X-ray diffrac tion analysis. The results show that the crystal of the title coordination polym er belongs to monoclinic space group C2/c, the cell parameters are as follows: a =1.787 5(2) nm, b=0.730 93(9) nm, c=2.038 2(2) nm, β=92.890(2)°, and V=2.659 6 (5) nm3, Z=8, Dc=1.687 Mg·m-3, μ(Mo Kα)=1.659 mm-1, F(000)=1 384, R=0.031 1, wR=0.079 0 for 2 454 observed reflections (I>2σ(I)) out of 2887 unique reflecti ons. In this copper(II) coordination polymer, each copper(II) ion is five-coordi nated with a geometry of distorted square-pyramid. Two oxygen atoms of the carbo xyl of each C10H8N2O32- acts as a bridge to bond two neighboring copper(II) ions , leading to an infinite one-dimensional chainlike coordination polymer. Each ch ain is linked by coordinated hexamethylenetetramines with its neighbors to form an infinite two-dimensional network structure. CCDC: 255347.展开更多
文摘慢性阻塞性肺疾病是危害人类健康的常见病,反复发作的症状及进行性下降的肺功能大大降低了患者的生活质量。目前对COPD的治疗主要以缓解症状,减少急性发作为主,但难以延缓肺功能的减退,导致COPD的死亡率仍居高不下。近期研究发现肾素–血管紧张素系统(Ras)在肺组织局部高度表达,与多种肺疾病密切相关,血管紧张素转换酶抑制剂(ACEI)及血管紧张素-1型受体拮抗剂(ARB)的使用可减轻COPD的炎症反应,减少肺损伤,改善肺功能。因此,本文就RAS对COPD发展的影响做一综述。Chronic obstructive pulmonary disease (COPD) is a common disease that endangers human health. The recurrent symptoms and the progressively declining lung function have greatly reduced the quality of life of patients. At present, the treatment of COPD mainly focuses on relieving symptoms and reducing acute exacerbations, but it is difficult to delay the decline of lung function, resulting in the still high mortality rate of COPD. Recent studies have found that the renin-angiotensin system (RAS) is highly expressed in local lung tissues and is closely related to a variety of lung diseases. The use of angiotensin-converting enzyme inhibitors (ACEI) and angiotensin type-1 receptor antagonists (ARB) can alleviate the inflammatory response of COPD, reduce lung injury and improve lung function. Therefore, this article reviews the impact of RAS on the development of COPD.
文摘The novel copper(II) coordination polymer with 2-oxo-propionic acid be nzoyl hydrazone and hexamethylenetetramine ligands, {Cu( μ2-C10H8N2O3)( μ2-C6H 12N4)1/2}n (C10H8N2O32- is the dinegative ion of 2-oxo-propionicacid benzoyl hyd razone), has been synthesized and characterized by elemental analysis and IR spe ctroscopy. The crystal structure was determined by single crystal X-ray diffrac tion analysis. The results show that the crystal of the title coordination polym er belongs to monoclinic space group C2/c, the cell parameters are as follows: a =1.787 5(2) nm, b=0.730 93(9) nm, c=2.038 2(2) nm, β=92.890(2)°, and V=2.659 6 (5) nm3, Z=8, Dc=1.687 Mg·m-3, μ(Mo Kα)=1.659 mm-1, F(000)=1 384, R=0.031 1, wR=0.079 0 for 2 454 observed reflections (I>2σ(I)) out of 2887 unique reflecti ons. In this copper(II) coordination polymer, each copper(II) ion is five-coordi nated with a geometry of distorted square-pyramid. Two oxygen atoms of the carbo xyl of each C10H8N2O32- acts as a bridge to bond two neighboring copper(II) ions , leading to an infinite one-dimensional chainlike coordination polymer. Each ch ain is linked by coordinated hexamethylenetetramines with its neighbors to form an infinite two-dimensional network structure. CCDC: 255347.
