aneurysm/dl proline

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Urinary L-valyl proline in patients with aortic aneurysms.

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Recent evidence indicates that metabolism of elastin may be altered in patients with different types of infrarenal aortic disease and that the phenotypic expression of aortic disease may be dependent on the balance between aortic elastase and antiprotease activity. The dipeptide L-valyl proline

Desmosines in aneurysms of the ascending aorta (annulo-aortic ectasia).

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Amino acid chromatography was used for determination of the elastin-specific amino acids desmosine and isodesmosine in acid hydrolyzates of intima-medial samples taken intraoperatively from aneurysms of human ascending aorta. Elastin concentration of the specimens was also estimated by hot alkali

Ruptured intracranial aneurysm associated with von Hippel-Lindau syndrome: a molecular link?

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OBJECTIVE Research into the etiopathogenesis of intracranial aneurysms has failed to demonstrate molecular markers or pathognomonic genetic sequences. The authors describe the case of aneurysmal rupture in a patient with von Hippel-Lindau (VHL) syndrome and explore a possible molecular

Adrenomedullin in mast cells of abdominal aortic aneurysm.

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OBJECTIVE Produced by vascular walls, adrenomedullin (AM) exerts antifibrotic actions in the process of cardiovascular remodeling. The purpose of this study was to examine the pathophysiological role of AM in the development of human abdominal aortic aneurysm (AAA). RESULTS Immunohistochemical

The pathogenicity of the Pro1148Ala substitution in the FBN1 gene: causing or predisposing to Marfan syndrome and aortic aneurysm, or clinically innocent?

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In individuals with the Marfan syndrome (MFS), mutations have been identified in the fibrillin-1 gene (FBN1) at 15q21.1. A proline-to-alanine change at position 1148 in exon 27 (Pro1148Ala) has been reported in probands with MFS, aortic aneurysm or Marfanoid-craniosynostosis. It was suggested that

Absence of collagen deficiency in familial cerebral aneurysms.

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It has been suggested that a deficiency in the expression of type III collagen may play a role in the pathogenesis of cerebral aneurysms. To test this hypothesis in cases of familial cerebral aneurysms, fibroblast cell cultures were established and the expression of collagen types I and III was

Abnormalities in the biosynthesis of type III procollagen in cultured skin fibroblasts from two patients with multiple aneurysms.

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We examined the synthesis of collagenous proteins by cultured skin fibroblasts taken from 14 patients with an abdominal aortic aneurysm and either an aneurysm at a second site (8 patients) or a first order relative with an abdominal aortic aneurysm (6 patients). Fibroblasts were labeled with [3H]

A disorder of collagen biosynthesis in patients with cerebral artery aneurysm.

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12 patients with subarachnoid hemorrhage due to rupture of a cerebral aneurysm were examined clinically for symptoms and signs of a connective tissue disorder and biochemically for details of the biosynthesis of collagen. No uniform clinical pattern of any connective tissue disorder was seen in

Sequencing of cDNA from 50 unrelated patients reveals that mutations in the triple-helical domain of type III procollagen are an infrequent cause of aortic aneurysms.

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Detailed DNA sequencing of the triple-helical domain of type III procollagen was carried out on cDNA prepared from 54 patients with aortic aneurysms. The 43 male and 11 female patients originated from 50 different families and five different nationalities. 43 patients had at least one additional

Risky communication in atherosclerosis and thrombus formation.

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Atherosclerosis, a progressive disease of medium- and large-sized arteries, constitutes the major cause of death in developed countries, and is becoming increasingly prevalent in developing countries as well. The main consequences of atherosclerosis are myocardial infarction, cerebral infarction and

Dilatation of the ascending aorta is associated with low serum prolidase activity.

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The pathogenesis of ascending aortic aneurysm (AAA) involves many factors; elastin degradation could lead to initial dilation, and changes in the collagen structure predispose the aneurysm to rupture. Prolidase is an enzyme that catalyzes the final step of collagen breakdown by liberating free

Metabolomic Analysis of Patients with Chronic Myeloid Leukemia and Cardiovascular Adverse Events after Treatment with Tyrosine Kinase Inhibitors.

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Cardiovascular adverse events (CV-AEs) are considered critical complications in chronic myeloid leukemia (CML) patients treated with second- and third-generation tyrosine kinase inhibitors (TKIs). The aim of our study was to assess the correlation between metabolic profiles and CV-AEs

The borohydride-reducible compounds of human aortic elastin. Demonstration of a new cyclic amino acid in alkali hydrolysate, and changes with age and in patients with annulo-aortic ectasia including one with Marfan syndrome.

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Human aortic elastin reduced with [3H]borohydride was analysed by ion-exchange chromatography after alkali or acid hydrolysis. Alkali hydrolysates of elastins contained a radioactive peak that was eluted between proline and leucine. This peak was not present in foetal elastin, but its proportion

Differential effects of Nd-YAG laser on collagen and elastin production by chick embryo aortae in vitro. Relevance to laser angioplasty for removal of atherosclerotic plaques.

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Aortae from 17-day old chick embryos were subjected to irradiation with a Nd:YAG laser at energy densities varying from 1.2 - 4.7 X 10(3) J/cm2. The aortae were pulse-labeled in vitro with [3H]proline or [14C]valine, and the synthesis of collagenous polypeptides and soluble elastin was examined by

The effect of surgical operation on venous plasma free amino acids.

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The effects of abdominal operation on the antecubital vein plasma amino acid concentration were examined. With four groups, each containing ten patients, factors such as severity of surgical operation, anesthesia, and postoperative nutrition were examined. Immediately after operation there is a fall

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