Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0004153 (atherosclerosis)
 77,401 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

PDGF may be involved in the pathogenesis of a variety of disorders including atherosclerosis and certain types of cancer. There is currently little understanding of the molecular structure of PDGF and of the critical amino acid residues involved in receptor binding and cell activation. Two such PDGF-B chain residues, arginine 27 and isoleucine 30, have been identified by a site-directed mutagenesis programme. Substitutions in these positions can lead to PDGF mutants defective in both receptor affinity and cell activation as judged by displacement of [125I]PDGF-BB, mitogenic assay and inositol lipid turnover. Circular dichroism and fluorescence spectroscopy show that such mutations do not disrupt the structure of PDGF.
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PMID:Two PDGF-B chain residues, arginine 27 and isoleucine 30, mediate receptor binding and activation. 166 70

In the western industrialized countries atherosclerosis is the leading cause of death. In this investigation serum cholesterol and blood pressure were measured in 4321 (60.9% females) inhabitants of Lower Austria. In addition, a short cardiovascular history was taken and age, sex, body weight, height and smoking habits were recorded. In the various villages the mean serum cholesterol differed considerably (194 +/- 52-244 +/- 49 mg/dl). Overall, women had a slightly, but non-significantly, higher serum cholesterol (224.0 +/- 53.5 mg/dl) than men (218.6 +/- 58.4 mg/dl). Although 2/3 of the participants showed an elevated serum cholesterol, only 6% were taking lipid lowering drugs. An age-dependent increase in cholesterol was found in women, whereas this correlation was present in men only until the age of 40. Approximately 30% of the participants reported a positive family history. A comparison with the mortality register showed a correlation between smoking and bronchogenic cancer. No correlation, however, was demonstrable between smoking and cardiovascular mortality--perhaps due to methodological difficulties. Regional analysis of the results indicates the importance of the role of local general practitioners in the prevention of atherosclerosis.
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PMID:[Risk factors of atherosclerosis: results of screening in Southern Austria]. 175 Feb 24

Oxygenated derivatives of cholesterol (oxysterols) are widely distributed in nature, being found in the blood and tissues of animals and man as well as in foodstuff. They exhibit many biological activities which are of potential physiological, pathological or pharmacological importance. Many oxysterols have been found to be potent inhibitors of cholesterol biosynthesis and one or more oxysterols may play a role as the physiologic feedback regulator of cholesterol synthesis. Oxysterols also inhibit cell replication and have cytotoxic properties, effects which suggest that these sterols may participate in the regulation of cell proliferation and may be potentially useful as therapeutic agents for cancer. Furthermore, there is considerable evidence that oxysterols may be involved in the pathogenesis of atherosclerosis. Although the mechanism of action of oxysterols in all these instances is not well understood, the existence of cytosolic and microsomal proteins which bind oxysterols with high affinity and specificity suggests that this group of compounds may represent a family of intracellular regulatory molecules.
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PMID:Biological activities of oxygenated sterols: physiological and pathological implications. 177 14

Between August 1980 and October 1990 we treated 36 patients with home total parenteral nutrition (HTPN) with a cumulative treatment duration of 92 years. They included 14 females and 22 males ranging in age from newborn to 75 years, with a mean of 38 +/- 21. The 4 commonest indications for HTPN were short bowel syndrome (mainly due to mesenteric occlusion (50%), inflammatory bowel disease 14%), motility disorders (14%) and malabsorption (11%). All-in-one nutritional mixtures utilizing the big-bag technique were used for all patients. Broviac or Hickman catheters were implanted in 35 patients and an infusion port in 2. Infusions were administered during the night for 8-12 hours with a volumetric pump. 14 patients are still receiving HTPN (39%) while in 8 it was discontinued as they can maintain their nutritional status by the gastrointestinal route (22%). 14 patients have died (39%), 3 from HTPN-related causes (2 of sepsis and 1 of liver failure). Catheter-related sepsis was 0.42/year of HTPN. Other common complications were metabolic bone disease, deranged liver function and cholecystolithiasis. 80% were able to return to work, school, or housekeeping activities, or at least to take care of themselves and cope with HTPN unaided. Social rehabilitation was full or partial in 72% and only 29% were house-bound and needed major assistance. Patients with a poor life quality tended to be older and suffer from intestinal diseases as a manifestation of a systemic disorder, such as atherosclerosis or malignancy.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[A decade of experience with home total parenteral nutrition]. 180 Feb 76

Czechoslovakia is contemporarily ranged between the countries with mostly unfavourable indicators of national health. The life expectancy (LE) values at birth as achieved by 1988 in men were 67.85 years and 75.42 years in women, respectively. In Czechoslovakia this indicator is averagely 4 and more years lower than that of industrially developed countries. Such a low czechoslovakian LE value is conditioned with mainly higher mortality to the ischemic heart disease, vascular brain disease as well as malignancies and traumas. In men, the mortality due to the ischemic heart disease (IHD) is accounted for the Le decrease to 3.23 years, and 2.57 years in women, respectively. Similarly, there is a LE decrease to 3.05 years in men, and to 2.54 years in women due to the malignancies. When the IHD mortality decrease may be achieved up to 30% against the status of 1985-87, it may be resulted in LE prolongation to 0.84 in men, and 0.66 in women, respectively. The similar decrease in mortality to vascular brain disease and atherosclerosis may have resulted in LE prolongation to 0.51 in men, and 0.72 years in women. The mortality decrease to cancers for 30% may have been resulted in LE prolongation for 0.84 years in men, and for 0.73 years in women, respectively. The attempt on how to prolong the LE is resulting in fast and responsible measures of primary prevention and partly in those of secondary prevention.
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PMID:Mortality effect of selected diseases on the life expectancy indicators in Czechoslovakian population. 181 24

The beneficial effects of combined estrogen-progestin-containing oral contraceptives (OCs) include prevention of pregnancy (less than 1 failure out of 100 regular users); the prevention of ectopic pregnancy; the reduction of preeclampsia (2.4 times lower risk compared with barrier methods); and reduction of pelvic inflammation to about one-half. The effects on menstruation include the reduction of sideropenic anemia (by lowering the incidence and duration of menstruation, OCs reduce the loss of iron to 50% or to as much as 33%); dysmenorrhea by 40% (symptoms receded in 90% of users); and premenstrual syndrome by 30%. OCs exert a favorable effect on menstrual epilepsy; reduce sports-related accidents in the premenstrual and menstrual periods; and reduce intermenstrual bleeding. The protection from cancer includes the lowering of endometrial cancer risk (every 2 years of use reduces the risk by 38%, 12 years of use by 70%, and the beneficial effects last 3-15 years); reduction of the risk of the ovarian cancer (already 3-6 months of use reduces the risk by 30%, and more than 5 years by 50% in women under 50 years of age with a longterm effect of 10 years or more, which drops sharply in women over 60 who are mostly at risk). Among other beneficial effects, they reduce benign mastopathy by 50-75%; reduce the risk of follicular ovarian cysts to 50% and the risk of corpus luteal ovarian cysts to 1/5; and they lessen bone loss which favorably affects osteoporosis. Low-dose OCs minimize the well-known risks of thrombotic and cerebrovascular accidents, myocardial infarction, hypertension, altered carbohydrate metabolism, gallbladder diseases, and liver cancer. A new OC with 30 mcg of ethinyl estradiol was tested with daily doses of 150 mcg of desogestrel. The high density lipoprotein (HDL) either increased or did not change with desogestrel: the HDL2 subfraction that protects from atherosclerosis did not change, and probably the HDL3 raised the HDL level.
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PMID:[Favorable effects of oral estrogen-progestin contraception]. 181 41

From 1980 to 1990 twelve patients with vascular lesions attributable to irradiation were treated. The time interval between radiotherapy because of malignancy and onset of symptoms due to radiation-induced atherosclerosis was on an average 7 years (1 month-29 years). A typical morphological finding at angiography was the well-localised vascular lesion in the previous radiation area, its localisation clearly distinguishable from typical atherosclerotic lesions. 10 patients had other radiation damage with involvement of the skin and perivascular tissue frequently necessitating an extra-anatomic reconstruction (n = 6). 4 patients had an anatomical reconstruction, one had a PTA, one was treated conservatively. Due to absence of multifocal arteriosclerotic lesions, long-term results of vascular reconstruction are good and will certainly contribute to further improvement of life quality after curative therapy for malignant disease.
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PMID:[Arterial lesions following radiotherapy]. 184 91

We carefully ascertained deaths for a cohort of 744 patients who had undergone noninvasive testing for lower extremity peripheral arterial disease (PAD) in a university affiliated, community hospital. Using a ratio of the ankle and brachial blood pressures (ABI) of less than 0.85 as the criteria, the relative risk (RR) for total mortality associated with PAD was 2.36 (95% CL = 1.60, 3.48) after adjusting for baseline covariates in a proportional hazards model. There was a strong trend for increasing risk with decreasing ABI (P less than 0.0001). Specific causes of death for which survival was directly related to the magnitude of ABI were myocardial infarctions, and deaths other than vascular disease and cancer. There was no relationship between ABI and the risk of mortality from cancer. The mortality experience of those with normal ABI was very similar to that of the general U.S. population (age adjusted RR = 1.14, 95% CL = 0.78, 1.61), whereas the risk for those with an ABI less than 0.4 was markedly elevated in comparison to the U.S. population (RR = 4.49, 95% CL = 3.52, 5.64). Our results suggest that the relatively technically simple measure of the ratio of ankle to brachial blood pressures, if low, carries a very poor prognosis and should prompt investigation and treatment of atherosclerotic disease in other vascular systems.
Atherosclerosis 1991 Apr
PMID:The ratio of ankle and arm arterial pressure as an independent predictor of mortality. 185 59

Cultured aortic smooth muscle cells from rabbit, in synthetic and contractile state, are considered good models for studying pathological and normal cells, respectively, during the atherosclerotic process. Cholesterogenic activity was compared in cells which were obtained in both states of the same subculture and incubated with labeled sodium acetate. This activity (expressed as the percentage of total cell radioactivity uptake transformed into cholesterol) was very high in synthetic cells and comparable to that of cancer cells. Cholesterol synthesis was lower in contractile cells and similar to that observed in a nonpathological cultured cell. During the cell life-span (studied in two cultures) cholesterogenic activity initially increased and then slowly decreased, in the two phenotypic states. Near the end of the culture life, cholesterol production drastically decreased, but this was due to a blocking of the last steps, lanosterol demethylation and C27 sterol transformation into cholesterol, rather than to a sharp decrease in the first steps of the cholesterogenic process. Cells in the synthetic and contractile states released newly synthesized lipids which were essentially late precursors of cholesterol, but accumulation of oxy-sterols was not observed. The excretion of metabolites increased with culture aging.
Atherosclerosis 1991 Feb
PMID:Active cholesterol biosynthesis in cultured aortic smooth muscle cells: evolution during the life-span of the culture. 187 7

Alpha-Tocopherol (vitamin E) protects against free radical damage, which has been implicated in aging, cancer initiation, and atherosclerosis. We have found that physiological concentrations of alpha-tocopherol specifically inhibited aorta smooth muscle cell (VSMC, line A7r5) proliferation and protein kinase C (PKC) activity. Other water and lipid soluble antioxidants were inactive. alpha-Tocopherol inhibition of PKC and of VSMC proliferation may represent a physiological mechanism, relevant to the onset of diseased states such as atherosclerosis.
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PMID:Alpha-tocopherol (vitamin E) regulates vascular smooth muscle cell proliferation and protein kinase C activity. 189 54


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