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1.
The serum lipid classes in 75 pregnant women (25 in each trimester) and 25 matched controls were investigated. The lipid classes studied were very low density lipoproteins (VLDLc), low density lipoproteins (LDLc), high density lipoproteins (HDLc), total triacylglycerols (Tg), phospholipids (PL) and total cholesterol (Tc). It was found that there is increase in HDLc during first trimester followed by decrease during second and third trimesters. All other lipid classed including Tc and PL showed a progressive increase. Analysis of data showed that Tc/HDLc ratio has an increasing trend with parity. LDLc/HDLc also showed similar correlation. The results of our study indicates that there is likely to be increased risk for CHD in multiparous women as predicted from serum lipid parameters.  相似文献   

2.
The level of serum cholesterol (Ch), serum-high density lipoprotein cholesterol (HDLc), serum-low density lipoprotein cholesterol (LDLc), serum very low density lipoprotein cholesterol (VLDLc), Triglyceride (Tg), Apolipoprotein A-1, B and ratio of Apolipoprotein A1/B were observed in 151 survivors of myocardial infarction in different age groups. A significant increase was found in the level of triglyceride, LDLc, apolipoprotein-B and a significant decrease in apolipoprotein-A1 and the ratio of apolipoprotein A1/B. No significant alteration was found in serum cholesterol, HDLc except in the age group of 31–40 years and 41–50 years and VLDLc. Thus, serum Apo A-1 and Apo-B may be considerably better markers for coronary artery disease than traditional lipid parameters.  相似文献   

3.
Effects of three drugs, Gemfibrozil, Diltiazem and lsosorbide dinitrate (ISDN) on various lipid parameters were studied in patients with ischemic heart disease (IHD) with positive treadmill stress response. Gemfibrozil and diltiazem significantly lowered the levels of serum total lipids (TL), triglycerides (TG), phospholipids (PL), total cholesterol (TC), low density lipoprotein cholesterol (LDL-C) and very low density lipoprotein cholesterol (VLDL-C), and incroased the levels of serum high density lipoprotein cholesterol (HDL-C) significantly. However, patients administered with ISDN showed a significant increase in all the lipid parameters except HDL-C, which showed a significant decrease.  相似文献   

4.
Coronary artery disease is now a major health problem in India. In past few decades the battle to reduce the incidence of coronary artery disease has led the researchers to look for various clinical markers, which would help early diagnosis of the diseases. The present study was undertaken to assess the level of lipoprotein (a) [Lp(a)] and few other lipids in selected myocardial infarction (MI) patients below 45 years without having any traditional risk factors but with positive family history. Fasting blood samples were taken from 65 patients and their total cholesterol, LDL cholesterol, VLDL cholesterol, HDL cholesterol, triglycerides and serum Lp(a) were determined. The control group consisted of 50 age matched healthy individuals. The mean Lp(a) level was 58.6±3.20 mg/dl in patients and 19.70±0.18 mg/dl in controls. Thus Lp(a) levels were found significantly higher in patients with MI (p<0.05 for patients versus control) as compared to the controls. There was no significant difference in the levels of total cholesterol (TC), LDL, VLDL HDL, TGL as compared to controls but there was an increase in TC/HDL cholesterol ratio. The results of this study suggest that high level of Lp(a) and TC/HDL ratio has a distinctive association with MI, independent of other common coronary risk factors. Hence, Lp(a) level in serum emerges to be a promising marker for diagnosis of coronary artery diseases.  相似文献   

5.
Blood samples from 39 patients with acute myocardial infarction and 15 healthy controls were analysed for serum and platelet sialic acid. Serum sialic acid levels in patients with acute myocardial infarction were significantly higher than controls (mean 2.7±0.46 μmol/ml Vs. 1.91±0.17 μmol/ml respectively). Levels of serum orosomucoid, an acute phase reactant, containing sialic acid, were also higher in these patients, suggesting a possible non-specific mechanism of increase in serum sialic acid concentration. In contrast, platelets contained significantly less sialic acid in patients with acute myocardial infarction than control (26.73±1.57 nmol/mg protein and 31.97±2.68 nmol/mg protein respectively).  相似文献   

6.
Oxidative stress conditions associated with atherosclerosis leads to oxidative modification of low-density lipoprotein (LDL). The body’s capabilities to inhibit LDL oxidation and to remove or neutralize the atherogenic oxidized LDL (ox-LDL) are limited. When the LDL cholesterol level increases in the blood, it leads to dangerous consequences like atherosclerosis, leading to myocardial infarction. The major effect of an antioxidant in the LDL environment is to prevent the formation of ox-LDL (during atherogenesis. Strategies to reduce LDL oxidation and prevent atherogenesis can involve the enrichment of arterial cells with potent antioxidants that can prevent oxidative damage to the arterial wall. The objective of this study is to evaluate the effect of l-arginine on serum lipid and cholesterol levels in the patients of acute myocardial infarction (AMI). The study consisted of 70 AMI patients and 60 healthy individuals (serving as control) age 55–65 years. Serum levels of total cholesterol, high density lipoprotein (HDL), LDL and Triglycerides were determined on day 1 and day 15 of l-arginine administration (oral dose 3 g/day). The total cholesterol/HDL and the LDL/HDL ratio were calculated and compared. As per the observations, l-arginine administration was found to improve the lipid profile of the subjects. Hence it could be used as an adjuvant therapy for AMI and as a preventive measure for the onset of the disease in the healthy elderly also.  相似文献   

7.
The present study conducted on twenty-five uncomplicated cases of acute myocardial infarction diagnosed by clinical and electrocardiographic findings indicated significantly increased level of cardiac Troponin-T and increased activities of the enzymes total creatine kinase, creatine kinase-MB, aspartate transaminase and lactate dehydrogenase as compared to the twenty-five healthy control subjects. The level of cardiac Troponin-T and the activities of the enzymes total creatine kinase, creatine kinase-MB, aspartate transaminase and lactate dehydrogenase was found to be higher in “Q” wave myocardial infarction patients as compared to the non-“Q” wave and the controls. Since cardiac Troponin-T has been shown to increase in unstable angina and renal failure without cardiac disease and creatine kinase-MB activity has been found to be normal in patients with unstable angina and increase very slightly in patients with renal failure, it was concluded that a combination of cardiac Troponin-T and creatine kinase-MB activity was sufficient for the early diagnosis of acute myocardial infarction.  相似文献   

8.
Serum cardiac troponin T (cTnT) and CKMB (mass) were analysed in three groups of patients. The first group (n=32) were patients with acute coronary syndromes including myocardial infarction. The second group (n=35)were patients with hypertension. The third group (n=24) were patients who had succumbed to non cardiac diseases. In all 3 groups, cardiac troponin T was elevated when compared with controls (p<0.001). However, CKMB elevation was not significant in all groups. CKMB levels correlated well with troponin T levels only when CKMB was greater than 50 ng/ml (r=1.00). Small elevations of troponin T identifies minimal cardiac necrosis and patients can benefit from early invasive therapy.  相似文献   

9.
Myocardial infarction is a major consequence of coronary artery disease. Apart from the traditional risk factors of myocardial infarction, recently many reports have suggested that hyperhomocysteinemia plays important role in myocardial infarction. Plasma homocysteine level was determined in 60 myocardial infarction patients and in 35 age matched healthy individuals. Statistically significant differences (p<0.01) were observed in the mean of plasma homocysteine concentrations between the acute myocardial infarction patients (24.59±6.14 mM/L) and in normal healthy individuals (13.73 ±3.54 mM/L). The level of homocysteine in myocardial infarction patients is significantly high (p <0.01) among myocardial infarction patients when compared to that of the controls. The the present study indicates a strong association between plasma homocysteine and acute myocardial infarction among Tamilians, thus implying plasma homocysteine as a possible risk factor for myocardial infarction.  相似文献   

10.
Free radicals play an important role in the pathogenesis of tissue damage in many clinical disorders, including atherosclerosis. Antioxidants protect the body from damage caused by free radicals. In this study we investigated oxidative stress, antioxidants and inflammatory molecules in patients with acute myocardial infarction. This study has been carried out on 106 patients with acute myocardial infarction, (89 men and 17 females). The control group consisted of 50 healthy, age-matched subjects (40 men and 10 females). Levels of Glucose, lipid profile, glutathione reduced, glutathione peroxidase, Superoxide dismutase, Glycosylated hemoglobin, fibrinogen, vitamin C, vitamin E, malondialdehyde, ceruloplasmin, adenosine deaminase, lysozyme and sialic acid were measured. Malondialdehyde and ceruloplasmin levels were significantly high and antioxidants such as vitamin C, vitamin E, glutathione reduced, glutathione peroxidase and superoxide dismutase were significantly decreased in diabetic and non-diabetic AMI patients as compared with control (p<0.001). Inflammatory markers showed significant rise in diabetic patients as compared with controls. Our results clearly show increased inflammation and oxidative stress in patients with acute myocardial infarction. Depression of antioxidant system in these patients confirms this conclusion.  相似文献   

11.
Measurement of cardiac markers is an index of care standard in the assessment and diagnosis of cardiovascualr disease. Two of the major cardiac markers are Creatine Kinase isoenzyme CK-MB and Troponin T, which are extensively used in the diagnosis of heart disease. The release of Troponin T and creatine kinase isoenzyme (CK-MB) was investigated in 50 coronary artery bypass surgery patients. Measurement of plasma samples was carried out at five different time points, namely before surgery, 1,6,12,24 hours after surgery. The results indicated that CK-MB level were increased by a factor more than four times compared with the upper limit of baseline (befor surgery). Troponin T concentration showed more than six fold over the upper limit of baseline (before surgert) at 1,6,12,24 hours after surgery. In order to assess the significance of the length of the surgical procedure on the release of Troponin T and CK-MB, the surgery patient were divided into two groups according to the length of the surgical procedure: group I was selected on the basis that the surgical procedure they underwent lasted above 90 minutes and group II with a surgical procedure below 90 minutes. Both Troponin T and CK-MB showed a significant increase in-group I compared to group II. To investigate the likelihood that this effect is party due to myocardial infarction during surgery, the patients were divided into two groups: Group A with some sings of myocardial infarction on Q wave of ECG and group B without any change. The results showed approximately a two-fold increase of these markers in-group A compared to group B. Since these markers reach into blood following damage to myocardial their increase in patients with time course surgery of more than 90 minutes and those with a probability of MI during operation, indicating that these patient fall into a high risk group of repeat (MI) after surgery.  相似文献   

12.
The study aimed to analyze the circulating levels of thrombotic and haemostatic components; tissue factor, tissue factor pathway inhibitor, tissue plasminogen activator and plasminogen activator inhibitor-1 in patients with acute myocardial infarction at presentation (Group 1, n=49), unstable angina and Non-ST elevated MI after treatment (Group 2, n=22), stable angina (Group 3, n=18) and healthy individuals (Group 4, n=31). Significant finding was increase in tissue factor not only in Group 1 (2.0 fold, P=0.001), Group 2 (2.2 fold, P=0.015) but also in Group 3 (1.8 fold, P=0.018) as compared to controls. In Group 1 Plasminogen activator inhibitor-1 increased significantly (35.8%, P=0.02). Tissue factor pathway inhibitor and tissue plasminogen activator demonstrated increase in Group 1 of age<40 years while insignificant changes in elder patients. Increased thrombotic and decreased fibrinolytic conditions in acute myocardial infarction patients were observed. Increase TF in stable angina demonstrates procoagulant status in these patients as well.  相似文献   

13.
Laboratory infarction diagnostics are based on the detection of elevated serum activities of total Creatine Kinase (CK), Creatine Kinase isoensyme MB, (CKMB), Lactate dehydrogenase (LDH), isoenzyme forms of LDH and transaminases. Determination of these cardiac marker enzymes permits a highly sensitive diagnosis of transmural myocardial infarction. In such patients the diagnosis of acute myocardial infarction can be confirmed by the clinical, symptoms, and changes in the ECG in addition to the enzyme assays. The 50 AMI patients selected in the present study were those admitted to the ICCU of Shri Krishna Hospital, Karamsad. The blood samples were taken at the time of admission (ie. within four hours of the start of chest pain). The samples were analyzed for CK, CKMB, SGOT, (Serum glutamate oxaloactate transaminase) αHBDH α-hydroxybutyrate dehydrogenase and troponin T. The serum CKMB activity in AMI showed an increase only 5–6 hours after the commencement of chest pain. The elevation in SGOT and αHBDH was still delayed. At the same time we could observe that the cardiac Troponin T (cTnT) was elevated at the time of admission of the patient itself. This increase of cTnT in AMI patients was 20 times higher than the normal blood donors. The controls included 25 normal blood donors and 25 patients with polytraumatic injuries with no chest contusion. The study shows that cTnT estimation could serve in the early diagnosis of AMI. The increase of cardiac troponin T in AMI patients was 20 times higher than the normal blood donors in AMI patients at the time of admission. Cardiac troponin T in serum appears to be a more sensitive indicator of myocardial cell injury than CKMB activity and its detection in the circulation may be a useful prognostic indicator in patients with unstable angina as well. When the blood of normal blood donors or that of patients with polytraumatic injury was analysed the troponin T values were well within the normal range in both the above categories showing that cardiac troponin T is highly specific for heart tissue. Although CKMB and cardiac troponin T are released soon after the myocardial injury, the release of cardiac troponin T is much earlier than CKMB thereby invalidating the important role of cardiac troponin T in diagnosing AMI. Cardiac troponin T has been shown to be highly sensitive for cardiac injury and not elevated in any other trauma, heavy exercise or skeletal muscle injury. Cardiac troponin T is ordinarily undetectable in healthy individuals, and so its measurement can serve as a powerful tool in the diagnosis of AMI.  相似文献   

14.
吴楚绶 《科技通报》1997,13(3):193-196
观察了力平脂对高脂血症者的治疗作用和安全性．确诊高脂血症者６８例，力平脂，０．１，Ｔｉｄ，服一个月为一疗程后，血清总胆固醇（ＴＣ）平均降低２０．９８％，甘油三酯平均降低５１．８８％，ＨＤＬ－Ｃ平均升高１０．２６％，ＬＤＬ－Ｃ平均降低１２．５７％，ＡｐｏＡ１平均升高２．２４％，ＡｐｏＢ平均降低２１．１０％，从调血脂的个体疗效分析，力平脂降低ＴＣ的总有效率８４．６１％，降低ＴＧ的总有效率９５．２４％，升高ＨＤＬ－Ｃ的总有效率６１．７７％，降低ＬＤＬ－Ｃ的总有效率为５５．８８％，升高ＡｐｏＡ１的总有效率３８．２４％，降低ＡｐｏＢ的总有效率７７．９４％．提示：力平脂治疗高脂血症者，对降低ＴＣ，ＴＧ，ＬＤＬ－Ｃ，ＡｐｏＢ和升高ＨＤＬ－Ｃ，ＡｐｏＡ１均有明显效果，其中降低ＴＧ的疗效尤为突出，副作用轻微．临床实践表明：力平脂是一个疗效高、安全、服用方便的调血脂新药  相似文献   

15.
Cholesterol synthesis and its suppression by LDL was measured in freshly isolated leucocytes from patients with acute myocardial infarction and healthy controls. Cells incubated for different time intervals in lipoprotein-deficient serum exhibited increased cholesterol synthesis. The magnitude of this increase was far greater in leucocytes of hyperlipemic patients than in normolipemic patients. Addition of LDL to the incubation medium produced suppression of cholesterol synthesis. This reduction was less in hyperlipemic patients as compared to normolipemic patients. These observations may imply reduced suppression of HMG-CoA reductase activity with high endogenous cholesterol synthesis in patients suffering with acute myocardial infarction.  相似文献   

16.
程刚  单江  张勇  陈珊 《科技通报》2002,18(2):118-121
目的：分析冠心病患者和正常人血脂水平与心率变异频域指标及自主神经活动的关系。方法：对71例确诊的冠心病患者和96例正常人行24h动态心电图并采空腹血查血脂，分别比较两类人群中高胆固醇血症组与正常胆固醇组心率变异频域指标VLF、LF、HF、LF／HF的差异，并用多元逐步回归分析血脂各值与心率变异的相关性。结果：高胆固醇血症组与正常胆固醇组相比，冠心病患者中HF值显著降低（P＜0．05），而LF／HF值显著增高（P＜0．01）；正常人亦有高胆固醇血症组HF值较低而F/HF值较高的趋势，但无统计学差异。多元逐步回归分析中，冠心病患者HF与TC呈负相关，LF／HF则与TC、LDL呈正相关；正常人中LF／HF亦与TC呈正相关。结论：冠心病患者和正常人中血脂水平均与心率变异及自主神经活动存在一定的相关性。胆固醇增高者交感与迷走神经平衡性失调，交感神经活性相对较高而迷走神经活性相对较低。  相似文献   

17.
Human serum paraoxonase-1 (PON1), an enzyme on HDL prevents oxidation of LDL thereby preventing the development of atherosclerosis. Studies done so far have lead to conflicting results. As studies are lacking in North-West Indian Punjabi’s, a distinct ethnic group with high incidence of coronary artery disease, we determined PONase activity in this population. It has been postulated that sudden lowering of serum PONase may lead to precipitation of acute myocardial infarction. We determined serum PONase activity and lipids in 100 patients each of AMI (within 24 h of onset), stable CAD and 100 age and sex matched healthy controls. These were again determined after 6 weeks in AMI patients. The mean serum PONase activity was lowest in AMI patients (23.26 U/ml) followed by stable CAD patients (102.0 U/ml) where as in controls was highest (179.8 U/ml). In patients with AMI, activity was significantly higher at 6 weeks as compared to that after acute event (49.39 %; p < 0.05). Sudden lowering of serum PONase activity in a population which already has lower activity may be one of the risk factors for development of AMI.  相似文献   

18.
Laboratory infarction diagnostics are based on the detection of elevated serum activities of creatine kinase (CK) Creatine kinase Isoenzyme MB (CKMB) and Transaminases. Determination of these cardiac marker enzymes permits the diagnosis of transmural myocardial infarction. However in such patients the diagnosis of acute myocardial infarction can be confirmed by the clinical symptoms and changes in the ECG, in addition to the enzyme assays. The 50 AMI patients selected in the present study were those admitted to the ICCU of Shri Krishna Hospital, Karamsad. The blood samples were taken at Zero hours (i.e. at the time of admission of the patient). Within 6 hrs of the starting of chest pain, 1.5 million units of streptokinase were mixed with 100 to 150ml of normal saline and administered by infusion over a period of one hour. The blood samples were further collected at intervals of 6 hrs, 14hrs, 32hrs, 48hrs, 5th day and 7th day. The blood samples were analyzed for CK, CKMB, SGOT, α HBDH and Cardiac specific Troponin T. By 6hrs the CK and CKMB values had started rising, the rise continuing at 14hrs with peak values at 32hrs. The CK showed a slight decrease by 48 hrs. The cardiac Troponin T showed wide time window from 4 hrs to 7th day for detecting myocardial damage. The maximum cardiac Troponin T values were during the first 24hrs. Cardiac Troponin T in serum appears to be a more sensitive and early indicator of myocardial cell injury in comparison to CKMB.  相似文献   

19.
Serum creatine kinase MB isoenzyme (CKMB) and myoglobin have been studied in 35 cases with myocardial infarction. Increased values for both serum CKMB and myoglobin have been found in all the patients in the second sample collected 4 hr. after admission while in 22 patients in the first sample collected immediately after admission. Thus, the present study shows a good correlation between serum CKMB and myoglobin and therefore, suggests the possibility of using the serum myoglobin estimation in early detection of myocardial infarction either alone or in combination with the serum CKMB.  相似文献   

20.
Colostrum, the mammary secretion during first 2–4 days of lactation, provides all the essential components of nutrition and passive immunity required by the newborn. Pregnancy induced hypertension (PIH), glucose intolerance and anaemia are common medical complications observed during pregnancy in Indian women and their effects were studied on the composition of colostrum collected within 24 hours of delivery from lactating women included in the study. PIH during pregnancy significantly decreased colostrum IgA and total proteins, but showed a significant increase in K+ levels, where as women with glucose intolerance showed a significant decrease in total lipids and lactose and an increase in Na+ levels in colostrum compared to normal controls. The group with anaemia also showed a significant decrease in colostrum IgA and total protein levels when compared with the control group. Awareness about the changes that occur in the composition of colostrum during complicated pregnancies can be an important and useful tool for preventive and protective paediatrics.  相似文献   

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