Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0011849 (diabetes)
 277,896 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The purpose of this study was to assess the predictive values of the assays of fibrinopeptide A (FPA), beta-thromboglobulin (BTG) and their combination in patients suspected of having acute deep venous thrombosis (DVT) or pulmonary embolism (PE). In 80 controls the mean (+/- SD) plasma concentrations of FPA and BTG were 0.72 +/- 0.47 and 28.2 +/- 10.1 ng/ml, respectively. In 26 patients in whom DVT was confirmed by phlebography and Doppler ultrasound, clearly raised mean FPA (5.62 ng/ml) and BTG (70.6 ng/ml) concentrations were measured compared to those in 13 patients in whom this disorder was excluded (1.00 and 33.6 ng/ml, respectively). Also in 25 patients, in whom PE was established by perfusion lung scanning, clearly increased mean FPA (6.28 ng/ml) and BTG (82.4 ng/ml) concentrations were measured compared to those in 12 patients without this disease (1.03 and 32.5 ng/ml, respectively). Raised FPA and BTG concentrations were also found in 20 patients with inflammatory disorders and in 10 with various types of malignancy. The mean FPA and BTG concentrations did not differ between patients with renal failure or diabetes mellitus and patients without these diseases. From the predictive values of these assays and their combination it can be concluded that raised FPA and BTG concentrations are not specific for thrombosis. However, when normal FPA and BTG concentrations are present, acute DVT or PE can safely be excluded in symptomatic patients. In the group with confirmed DVT/PE, anticoagulant treatment (heparin and phenprocoumon) brought down the mean FPA concentration to levels within the normal range in less than 1 hour while the mean BTG concentration remained elevated throughout the 10-day study period.
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PMID:Diagnostic value of fibrinopeptide A and beta-thromboglobulin in acute deep venous thrombosis and pulmonary embolism. 618 Jun 2

A modification of the commercial radioimmunoassay (RIA) kit adapting to the assay of beta-thromboglobulin (beta-TG) in the urine, is described. The urine was concentrated by dialysis against dry Sepharose G 200. 131I-albumin was used as marker. Experiments in which 125I-beta-TG and 131I-albumin were added simultaneously showed a parallel recovery of both markers in the final sample. The sensitivity of the RIA was enhanced by incubation overnight of the urine sample with the antiserum. Increased urinary beta TG values were found in 20 patients with diabetes mellitus as compared to 20 young healthy normals. Increased urinary beta-TG values correlated with decreased creatinine clearance, but the difference between diabetics and normals was still observed when patients with a creatinine clearance of less than 100 ml/min were excluded. The urine beta TG level was correlated with the presence of neovascularization within the diabetic group.
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PMID:Increased urinary beta-thromboglobulin excretion in diabetes assayed with a modified RIA kit-technique. 618 34

In order to investigate the relationship between the in vivo platelet activation in diabetes mellitus and the endothelial damage connected with the diabetic micro- and/or macroangiopathy, plasma levels of beta-thromboglobulin (B-TG) and of factor VIII-related antigen (VIII R:Ag) were studied (1) in juvenile-onset (Type I) diabetics without clinical signs of angiopathy (age under 12 years) and (2) in mostly maturity-onset (Type II) diabetics with and without overt angiopathy (age between 14 and 60 years). Normal controls and nondiabetics with atherosclerosis were also studied. Plasma levels of both proteins were found to be elevated in all the groups of diabetic and atherosclerotic patients in comparison with the controls. Highest levels were found in adult diabetics with angiopathy and in atherosclerotics even without diabetes, but values of the diabetic children were also elevated. The data suggest a causal relationship between the vascular damage and the enhanced platelet reactivity in which the former may play the primary role.
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PMID:Plasma levels of beta-thromboglobulin and factor VIII-related antigen in diabetic children and adults. 618 37

Plasma beta-thromboglobulin (beta TG) was assayed in 10 insulin-dependent uncomplicated diabetic subjects and in 10 age- and sex-matched metabolically healthy controls, both at rest and after maximal physical exercise. Diabetic patients showed significantly higher (p less than 0.005) resting beta TG values as compared to the control group. After physical exercise, beta TG rose significantly (p less than 0.05) only in the control group, thus abolishing the difference (evaluated through beta TG values) between the two groups observed at rest. Platelet hyperactivity seems thus to be present even in uncomplicated diabetes, at rest, while exercise does not lead to a further increase in beta TG values contrary to what is observed in controls.
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PMID:Plasma beta-thromboglobulin in uncomplicated insulin-dependent diabetes at rest and during physical exercise. 619 Mar 37

Plasma concentrations of beta-thromboglobulin (B-TG) and of Thromboxane B2 (TxB2) were found to be increased in diabetics but their values didn't result in relation to simultaneous fasting glycemia. The aim of this study was to elucidate if the B-TG and TxB2 levels were correlated with the indexes of medium and long-term diabetes control, namely non-enzymatic glycosylation of serum proteins (GSP) and irreversibly glycosylated hemoglobin, stable (S) HbA1. Therefore the behaviour of B-TG, TxB2, glycemia, GSP, T-HbA1 (stable and labile) and S-HbA1 were determined in 37 type 1 diabetics without any apparent vascular complication. All these parameters, except S-HbA1, were studied also in 8 ketoacidotic diabetic out patients before and during the recovery of metabolic control. Glycemia was assayed by the method of Trinder; B-TG and TxB2 were determined by radio-immunoassay. GSP was measured by chemical procedure using thiobarbituric acid (TBA test). The concentration of HbA1 was performed before and after incubation of erythrocytes for 6 h at 37 degrees C in saline to evaluate T and S-HbA1. In the out-patients B-TG and TxB2 were found to be correlated only with GSP. During the recovery of glycemic control a progressive decrease in the levels of T-BG and TxB2 was observed. We conclude that in vitro platelet activation i.e. B-TG and TxB2 levels, stable metabolite of proaggregatory TxA2, are deranged in relation to medium term glycemic disturbance rather than to short-term glucose fluctuations.
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PMID:[Thromboxane, beta-thromboglobulin and the degree of blood sugar control in type 1 diabetes mellitus]. 619 1

Plasma beta-thromboglobulin, platelet factor 4, fibrinogen, fibrinopeptide A, antithrombin III, factor VIII related antigen, alpha 2-macroglobulin, platelet count, and total glycosylated haemoglobin were measured in three well matched groups of subjects: non-diabetic controls, diabetics without retinopathy, and diabetics with proliferative retinopathy. beta-thromboglobulin and platelet factor 4 concentrations were significantly higher in the diabetics with retinopathy than in the controls and platelet factor 4 was also increased in the diabetics without retinopathy compared with controls. Fibrinogen concentration was raised in diabetics without retinopathy compared with controls, diabetics with retinopathy compared with controls, and diabetics with retinopathy compared with those without. Fibrinopeptide A concentration did not differ significantly between groups. Antithrombin III levels were increased in diabetics with retinopathy compared with controls, and in diabetics with retinopathy compared with those without. Factor VIII related antigen values were higher in both the diabetic groups when compared with the controls. Fibrinopeptide A concentration correlated with both beta-thromboglobulin and platelet factor 4 in each of the three groups. Haemostatic abnormalities in diabetes have been shown, although a hypercoagulable state has not been confirmed. These changes in platelet and coagulation function may be secondary to the development of microvascular disease and their role in the pathogenesis of retinopathy remains uncertain.
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PMID:Platelet and coagulation factors in proliferative diabetic retinopathy. 620 21

To determine the effect of improved, short-term glycemic control on various functions of hemostasis in insulin-dependent diabetes, we measured changes in plasma fibrinogen, fibrinopeptide A (FPA), functional antithrombin III (AT-III), factor VIII:ristocetin cofactor ( VIIIRCoF ), beta-thromboglobulin (BTG), platelet factor 4 (PF4), and platelet aggregation responses to ADP and collagen in 12 patients with low or undetectable stimulated (postprandial) serum C-peptide levels during 4-8 wk (median, 6 wk) of treatment with constant subcutaneous insulin infusion. Mean plasma fibrinogen, FPA, AT-III, VIIIRCoF , and BTG at baseline were elevated compared with normal. Three patients had heightened platelet responses to ADP that did not correlate to other indicators of a hypercoagulable state; the affected patients, in fact, had significantly lower plasma BTG (25.5 +/- 5.3 [SEM] versus 44.6 +/- 4.6 ng/ml, P less than 0.05) and FPA (1.1 +/- 0.1 versus 2.5 +/- 0.5 ng/ml, P less than 0.05) than the remaining patients. Patients with clinically evident vascular disease had higher baseline plasma BTG and FPA than those without vascular disease (44.6 +/- 5.4 versus 30.2 +/- 4.6, and 2.6 +/- 0.6 versus 1.3 +/- 0.2 ng/ml, P less than 0.05, respectively). During treatment, all patients had declining blood glucose (200 +/- 18 to 102 +/- 5 mg/dl, P less than 0.001) and HbA1 (11.8 +/- 0.6 to 10.2 +/- 0.4%, P less than 0.005). No statistically significant changes in hemostatic functions were noted. During treatment, one patient had an acute myocardial infarction.(ABSTRACT TRUNCATED AT 250 WORDS)
Diabetes Care
PMID:Plasma beta-thromboglobulin, platelet factor 4, fibrinopeptide A, and other hemostatic functions during improved, short-term glycemic control in diabetes mellitus. 620 89

The effect of an insulin-induced hypoglycemia was examined in 14 type I diabetic patients. After an overnight blood glucose normalization, each patient received an additional intravenous bolus of 3 U regular insulin at 0900 h (time 0). Blood glucose was continuously recorded up to 180 min. Plasma samples were assayed for beta-thromboglobulin (beta TG, ng/ml), pancreatic glucagon (pg/ml), cortisol (microgram/dl), and growth hormone (ng/ml) 30 min before the insulin stress, at time 0, at blood glucose nadir, and at 180 min. The blood glucose fell from a baseline level of 85.0 +/- 3.2 mg/dl to a nadir value of 39.2 +/- 1.9 mg/dl (P less than 0.001) reached at an average time of 41.4 +/- 4.9 min. Plasma beta TG increased significantly (P less than 0.05) during the insulin stress: 93.4 +/- 23.7 ng/ml at nadir versus 42.5 +/- 5.9 at time 0. Plasma cortisol and growth hormone were significantly increased (P less than 0.02 and P less than 0.01) at nadir compared with time 0 values. Plasma pancreatic glucagon was higher at nadir than at time 0, but the difference was not significant. The present results indicate that in vivo platelet activation can be triggered by hypoglycemic episodes in insulin-treated diabetic patients.
Diabetes 1984 Sep
PMID:Plasma beta-thromboglobulin response to insulin-induced hypoglycemia in type I diabetic patients. 620 22

11 insulin-dependent and 19 non insulin-dependent diabetics with varying degrees of metabolic compensation and with high plasma levels of beta-thromboglobulin and thromboxane B2 were selected. Depending on the type of diabetes and the degree of glycaemia, control plasma levels of beta-thromboglobulin and thromboxane B2 were progressively lower after 14, 28 and 42 days of treatment with ticlopidine (500 mg/per day orally), than those encountered at the start of the study. It is concluded that ticlopidine influences plasma levels of beta-thromboglobulin and thromboxane B2 independently of the type and degree of metabolic compensation in diabetes mellitus.
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PMID:[Effects of ticlopidine on the plasma levels of beta-thromboglobulin and thromboxane B2 in types 1 and 2 diabetics]. 620 65

Plasma beta-thromboglobulin concentration was measured in ten uncomplicated insulin-dependent diabetic subjects, in ten insulin-dependent patients with retinopathy and in ten age- and sex-matched healthy controls, both at rest and after cycloergometric exercise to exhaustion. Resting plasma beta-thromboglobulin was similar in the two patient groups and significantly higher than the control group. After exercising, plasma beta-thromboglobulin rose significantly only in the control group. Platelet hyperactivity is therefore present even in uncomplicated diabetes mellitus and is not influenced by the presence of complications. A chronic overstimulation of platelets could be responsible for the high basal plasma beta-thromboglobulin concentration in diabetes mellitus and for its abnormal behaviour after physical exercise.
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PMID:Plasma beta-thromboglobulin concentration at rest and after physical exercise in complicated and uncomplicated diabetes mellitus. 621 Feb 18


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