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Biomedical subjects

V Capuano

Publications and source records attributed to V Capuano.

At least 19 recordsLinked to original sources
PubMed2003

Changes in total serum cholesterol for cardiovascular disease in a Mediterranean area, 1989-1999.

This work is about the comparison between two studies performed in southern Italy: 'Montecorvino Rovella Project' (PMR, 1988-1989) and 'VIP Project' (Prevention in the Irno Valley, 1998-1999) to evaluate the trend of cholesterolaemia in an area of the Campania region. These two areas which are near the city of Salerno have similar social and economic conditions and are where the Mediterranean diet originated. In both studies, people between 25 and 74 years were enlisted at random from the electoral rolls and subjected to blood tests. Total serum cholesterol was determined by an enzymatic method in the VIP as in the PMR. In the last 10 years, data show a reduction of mean cholesterolaemia of 5.5 mg/dl for men and of 3.5 mg/dl for women. In 1999, serum cholesterol for men and women is respectively 199.3 and 199.4 mg/100 ml. Ten years ago, the values were respectively 204.8 and 202.9 mg/100 ml. Prevalence of age-adjusted cholesterolaemia > or = 240 mg/100 ml decreased from 20.8 to 13.6% for men and from 19.8 to 18.6% for women. The Mediterranean diet protected the population of southern Italy from ischemic heart disease from 1950 to 1960. After this period, the population changed its eating habits, and one of the consequences was an increasing level of cholesterol. During the past decades, a return to the Mediterranean diet and the use of drugs have been responsible for lowering cholesterol.

Adult↗
PubMed2001

[Distribution and correlation of uric acid with classic cardiovascular risk factors in an adult population in Campania. VIP project data].

BACKGROUND: The aim of this study was to correlate uric acid levels with the classic cardiovascular risk factors in an adult population in Campania. METHODS: The following parameters were assessed in the study population (600 men and 600 women) aged between 25-74 years old, subdivided into 5 age groups (25-34, 35-44, 45-54, 55-64, 65-74): ECG, arterial pressure and body mass index (obtained by dividing weight in kg by height in metres squared). A blood sample was also taken to evaluate uric and other biochemical variables including: total cholesterol, HDL, L DI, glycemia, triglycerides, red and white blood cells, C3, fibrinogen, platelets and insulin serum levels. RESULTS: The results confirmed the positive correlation between uric acid and red and white blood cells in males, and between uric and the following variables in females: cholesterol, C3, LDL, systolic blood pressure, diastolic blood pressure, triglycerides, white blood cells, BMI and fibrinogen. When the correlation was performed in the entire population, uric acid correlated with triglycerides and red and white blood cells. Multivariate analysis for the entire population showed a strong correlation between uric acid, triglycerides and white blood cells. CONCLUSIONS: This study confirms the data reported in the literature and highlights the correlation between uric and the classic cardiovascular risk factors. This association is more evident in females.

Adult↗
PubMed2001

White blood cell count is related to arterial pressure and cholesterolemia in normal children.

BACKGROUND: Epidemiological studies have shown a relation between the white blood cell (WBC) count in peripheral blood samples and other cardiovascular risk factors in adult populations. The aim of this study was to investigate for the first time in children the relation between WBC count and patterns of atherogenic risk. METHODS: We studied a southern Italian cohort of 1,171 children (568 males, 603 females, mean age 10.8 +/- 0.06 years) from the fifth elementary classes in Salerno, Italy. This study is included in the screening of scholastic medicine. RESULTS: The WBC count was significantly associated with cholesterolemia (p < 0.03), systolic (p < 0.03) and diastolic blood pressure (p < 0.02), and platelet count (p < 0.01). Multivariate regression analysis demonstrated an independent, positive, and significant association of WBC count with the number of platelets, cholesterol levels and diastolic pressure. CONCLUSIONS: Even in children, there is a relation between the WBC count and other factors linked with the atherogenic risk. The meaning and the clinical importance of such an association remains to be cleared and it is thus premature to consider 11-year-old children as being at higher cardiovascular risk. An answer to this question might come from follow-up studies of our as well as of other similar cohorts.

Blood Platelets↗
PubMed2001

[The VIP Project: prevalence of risk factors for ischemic cardiopathy in an area of Campania].

BACKGROUND: The purpose of the VIP Project was to verify the distribution of coronary risk factors and the treatment of high risk subjects among the population in an area of Irno Valley in South Italy. METHODS: In this study, people aged 25-74 years were randomly enrolled from the electoral register and were then visited and subjected to blood venous drawing. The project consisted of three phases: identification and classification of high risk subjects; treatment; follow-up (after 5 and 10 years). In this paper all data gathered during the first control (1998-1999) are reported. Data refer to 1200 subjects (600 men and 600 women). RESULTS: The prevalences of risk factors were the following: hypercholesterolemia (serum cholesterol > or = 240 mg/dl): men 13.6%, women 18.6%; hypertriglyceridemia (serum triglycerides > or = 170 mg/dl): men 33.6%, women 17.9%; hyperglycemia (blood glucose > or = 126 mg/dl): men 11.2%, women 10.4%. The mean levels of systolic blood pressure were: men 132.6 mmHg and women 132.15 mmHg; diastolic blood pressure: men 83.97 mmHg and women 82.86 mmHg. Male subjects with hypertension (> 159/94 mmHg) were 29.1% while female subjects were 28.9%. The prevalence of smokers was 43% for men and 21.7% for women. CONCLUSIONS: Data show some important aspects (especially when they are compared with Montecorvino Rovella Project, an epidemiologic research on cardiovascular risk factors also carried out in the Province of Salerno in 1988-1989): there is a reduction of cholesterolemia and of prevalence of hypercholesterolemia; smokers are decreasing but there is an increase in female smokers; doctors treat men more efficaciously than women; in the female population, aged 45 to 54 years, there is an increase, in unacceptable proportions, in cardiovascular risk factors.

Adult↗
PubMed1998

The increased frequency of hypercholesterolemia in southern Italy is induced only by changing diet quality?

BACKGROUND: The purpose of this paper is to evaluate cholesterolemia and triglyceridemia in relation to BMI, alimentary habits and physical activity. DESIGN: We compare our epidemiological data with those obtained in other studies previously carried out in Campania: "CNR-ATS-RF2-OB43". SETTING: Campania (Italy). RESULTS: Data show an increase of these risk factors in Southern Italy from 1978 to 1989. In males, between 20 and 59 years the prevalence of hypercholesterolemia increases from 15.9% in 1978-1979 (CNR-RF2) to 17.8% in 1983-1984 (ATS-OB43), and 20.6% in our own data (1988-1990). The pattern is similar for females: 14.4% (1978-79), 16.7% (1983-1984), and 18.6% (1988-1990). In males hypertriglyceridemia increases from 17% in 1978-1979, to 21.3% in 1983-1984 and 36.2% in 1988-1990. In females from 9.8% to 12.4% and 18% respectively. CONCLUSIONS: This reality can be explained through the gradual changing of alimentary habits (high consumption of saturated fats and very little intake of vegetal fibres) and by reduced physical activity that contributes to the progressive BMI increase.

Body Mass Index↗
PubMed1998

Relation between white blood cell count and several risk factors for coronary heart disease in patients with systemic hypertension.

BACKGROUND: Several epidemiological studies have shown a relation between white blood cell (WBC) count in peripheral blood samples and other cardiovascular risk factors. Such associations have also been described in patients affected by dyslipidemia. On the other hand, no data are available in patients with systemic hypertension. AIM: In a southern Italian population of hypertensive patients, in order to assess the relation between WBC count and other risk factors for coronary artery disease; in addition, to evaluate if a high WBC count can identify subgroups of hypertensives with a higher risk profile for atherosclerosis. POPULATION AND METHODS: We evaluated 147 consecutive patients (44 males, mean age 49 +/- 11 years) with a minimum 2-year history of systemic hypertension in the absence of ischemic heart disease and cerebrovascular disease. Among risk factors, we considered: hypercholesterolemia, hypertriglyceridemia, hyperglycemia and obesity. RESULTS: WBC count was significantly higher in patients with 2 or more risk factors (7.092 +/- 1034 cells/dl than in hypertensives without risk factors (5.902 +/- 1167, p < 0.0001). WBC count was significantly associated with hyperglycemia (p < 0.001), number of cigarettes smoked daily (p < 0.004), fibrinogen plasma levels (p < 0.008) and azotemia (p < 0.009). Multivariate analysis has shown a positive significant and independent relation between WBC count and both hyperglycemia and number of cigarettes. CONCLUSIONS: These results emphasize that, among hypertensives, subgroups with a higher WBC count also have a higher risk profile for atherogenesis. The relation between WBC and some risk factors is confirmed by our data in a population of patients affected with systemic hypertension.

Adult↗
PubMed1997

The complete genome sequence of the gram-positive bacterium Bacillus subtilis.

Bacillus subtilis is the best-characterized member of the Gram-positive bacteria. Its genome of 4,214,810 base pairs comprises 4,100 protein-coding genes. Of these protein-coding genes, 53% are represented once, while a quarter of the genome corresponds to several gene families that have been greatly expanded by gene duplication, the largest family containing 77 putative ATP-binding transport proteins. In addition, a large proportion of the genetic capacity is devoted to the utilization of a variety of carbon sources, including many plant-derived molecules. The identification of five signal peptidase genes, as well as several genes for components of the secretion apparatus, is important given the capacity of Bacillus strains to secrete large amounts of industrially important enzymes. Many of the genes are involved in the synthesis of secondary metabolites, including antibiotics, that are more typically associated with Streptomyces species. The genome contains at least ten prophages or remnants of prophages, indicating that bacteriophage infection has played an important evolutionary role in horizontal gene transfer, in particular in the propagation of bacterial pathogenesis.

Bacillus subtilis↗
PubMed1997

The zinc binuclear cluster activator AlcR is able to bind to single sites but requires multiple repeated sites for synergistic activation of the alcA gene in Aspergillus nidulans.

The alcA gene which is part of the recently identified ethanol regulon, is one of the most strongly inducible genes in Aspergillus nidulans. Its transcriptional activation is mediated by the AlcR transactivator which contains a DNA-binding domain belonging to the C6 zinc binuclear cluster family. AlcR differs from the other members of this family by several features, the most striking characteristic being its binding to both symmetric and asymmetric DNA sites with the same apparent affinity. However, AlcR is also able to bind to a single site with high affinity, suggesting that unlike the other C6 proteins, AlcR binds as a monomer. In this report, we show that AlcR targets, to be functional in vivo, have to be organized as inverted or direct repeats. In addition, we show a strong synergistic activation of alcA transcription in which the number and the position of the AlcR-binding sites are crucial. The fact that the AlcR unit for in vitro binding is a single site whereas the in vivo functional unit is a repeat opens the question of the mechanism of the strong alcA transactivation. These results show that AlcR displays both in vitro and in vivo a new range of binding specificity and provides a novel example in the C6 zinc cluster protein family.

Aspergillus nidulans↗
PubMed1997

Ischemic stroke syndromes in childhood.

The ischemic stroke syndrome is very broad and encompasses a wide range of underlying conditions. Its identification is of great importance in clinical routine, in particular in the management of young patients who have acute neurologic deficits. The introduction of CT, MR and ultra-sound demonstrating lesions of the brain and in certain degree of the cerebral arteries has in general eliminated the need for angiography as a first examination. The most common underlying anomaly found with thrombotic or embolic stroke is congenital or acquired heart disease. Thus, it is essential that patients with cerebral ischemia be submitted to a complete cardiac examination. Children tend to show more recovery after a stroke than adults do.

Brain↗
PubMed1996

Organization of the Bacillus subtilis 168 chromosome between kdg and the attachment site of the SP beta prophage: use of Long Accurate PCR and yeast artificial chromosomes for sequencing.

Within the Bacillus subtilis genome sequencing project, the region between lysA and ilvA was assigned to our laboratory. In this report we present the sequence of the last 36 kb of this region, between the kdg operon and the attachment site of the SP beta prophage. A two-step strategy was used for the sequencing. In the first step, total chromosomal DNA was cloned in phage M13-based vectors and the clones carrying inserts from the target region were identified by hybridization with a cognate yeast artificial chromosome (YAC) from our collection. Sequencing of the clones allowed us to establish a number of contigs. In the second step the contigs were mapped by Long Accurate (LA) PCR and the remaining gaps closed by sequencing of the PCR products. The level of sequence inaccuracy due to LA PCR errors appeared to be about 1 in 10,000, which does not affect significantly the final sequence quality. This two-step strategy is efficient and we suggest that it can be applied to sequencing of longer chromosomal regions. The 36 kb sequence contains 38 coding sequences (CDSs), 19 of which encode unknown proteins. Seven genetic loci already mapped in this region, xpt, metB, ilvA, ilvD, thyB, dfrA and degR were identified. Eleven CDSs were found to display significant similarities to known proteins from the data banks, suggesting possible functions for some of the novel genes: cspD may encode a cold shock protein; bcsA, the first bacterial homologue of chalcone synthase; exol, a 5' to 3' exonuclease, similar to that of DNA polymerase I of Escherichia coli; and bsaA, a stress-response-associated protein. The protein encoded by yplP has homology with the transcriptional NifA-like regulators. The arrangement of the genes relative to possible promoters and terminators suggests 19 potential transcription units.

Amino Acid Sequence↗
PubMed1996

A new approach using multiplex long accurate PCR and yeast artificial chromosomes for bacterial chromosome mapping and sequencing.

An efficient approach for structural studies on bacterial chromosomes is presented. It is based on high-resolution PCR map construction by using a multiplex long accurate PCR (MLA PCR) protocol and a YAC clone carrying the region to be mapped as indicator. The high-resolution PCR map of the bacillus subtilis rrnB-dnaB region is presented as an example. Data are also presented on the use of DNA generated by LA PCR for sequencing; they are relevant to LA PCR induced mutations and justify the application of such mapping for sequencing long stretches of bacterial chromosomes.

Bacillus subtilis↗
PubMed1995

Association between white blood cell count and risk factors of coronary artery disease.

BACKGROUND: Epidemiologic studies have shown a correlation between white blood cell (WBC) count and risk of developing myocardial infarction. Aim of this study is to assess the association between WBC and the other risk factors of coronary heart disease in a southern Italian population. METHODS: Baseline data for the 1091 subjects (522 males and 569 females) enrolled in the "Montecorvino Rovella Project" were used to study factors associated with leukocytes. RESULTS: WBC count was significantly higher in smokers (8711.1 +/- 1892 cells/dl) than in ex-smokers (6720 +/- 1608 cells/dl) and in those who never smoked (6674 +/- 1608 cells/dl). By multiple linear regression analysis, WBC count showed a positive association with triglycerides (p < 0.01), cholesterol (p < 0.05) fasting glucose levels (p < 0.01) and diastolic blood pressure (p < 0.05). CONCLUSIONS: In this southern Italian population, elevated WBC count has been associated with other risk factors of coronary artery disease, particularly smoking, and has identified a high risk atherogenic profile. Even if the independency of the role of WBC is still under investigation, WBC count should be taken into account in establishing the coronary risk of apparently healthy people.

Adult↗
PubMed1994

Possible role of beta-blockers in the prevention of sudden cardiac death (SCD) in patients with coronary heart disease (CHD).

The prevention of sudden cardiac death remains one of the greatest challenges in the field of cardiovascular medicine today. Despite the difficulty in predicting which individuals are going to die suddenly, much knowledge has accumulated in recent years in regard to independent risk factors for SCD and moreover, different pharmacological interventions have been evaluated for the prevention of sudden coronary death. Currently, the beta-blockers are the only pharmacological agents that have been shown to reduce sudden cardiac deaths in clinical trials. The reduction in sudden death may involve several mechanisms that include antiatherosclerotic effects, antithrombotic effects, cardiac anti-ischemic effects and antifibrillatory effects.

Adrenergic beta-Antagonists↗
PubMed1994

[The Montecorvino Rovella Project: prevalence of coronary disease risk factors in an area of Campania].

BACKGROUND: The "Montecorvino-Rovella Project" is a clinical epidemiological study, whose aim is to ascertain the distribution of the coronary risk factors and to treat the high risk people in a southern Italian community (21,328 inhabitants) with a reference area. METHODS: The project consists of three phases: 1) identification and classification of high risk subjects among people aged 25-74 years at Montecorvino Rovella and Bellizzi (intervention area) and in a significant sample at Battipaglia (reference area); 2) treatment of high risk people at Montecorvino Rovella and Bellizzi; 3) periodic rescreening (after 5 and 10 years) of the enrolled cohorts and monitoring of morbidity and fatal cardiovascular events. In the first phase (1988-1990) 569 females and 522 males were examined. The participation response was high: 72.7% (75.9% females and 69.6% males). RESULTS: In this paper were described the main risk factors prevalence. The mean values (age-standardized) of total serum cholesterol (tc), triglycerides (tg) and fasting blood sugar (gl), for all males were of 204.8 mg/dl (tc), 159.4 mg/dl (tg), and 93.5 mg/dl (gl). In the females the mean values were lower: 202.9 mg/dl (tc), 134.2 mg/dl (tg), and 87.8 mg/dl (gl). The prevalences of this risk factors are the following hypercholesterolemia (serum cholesterol = > 240 mg/dl): males 20.7%, females 19.8%; hypertriglyceridemia (serum triglycerides = > 170 mg/dl): males 38.3%, females 23.1%; hyperglycemia (blood glucose = > 120 mg/dl: males 8.8%, females 6.6%. The mean levels of systolic blood pressure were: males 130.3 mm Hg and females 129.2 mm Hg; diastolic blood pressure: males 80.5 mm Hg and females 78.6 mm Hg. The male subjects with hypertension (B.P. = > 160/95 mm Hg) were 16.3% while female subjects were 26.1%. Hypertension control level in the examined sample was quite low. The prevalence of smokers was: 46% males and 17.3% females. Smokers were more frequently observed in young people (men > 50%), than in the oldest groups.

Adult↗
PubMed1994

[Medical treatment of endometriosis: comparative study of leuprolide acetate and danazol].

Hypo-oestrogenaemia following surgical oophorectomy leads to a regression of the ectopic endometrial tissue. A medical and transitory oophorectomy can be obtained using leuprolide ac., an analogue of LH-RH. In this study we compare the results of therapy with danazol or leuprolide in the treatment of endometriosis. Fifty patients affected by endometriosis were selected laparoscopically and recorded under the classification of American Fertility Society. 20-40 year old women who were admitted had not received any therapy for endometriosis within the previous 12 months. They were allocated at random to open treatment with intramuscular injection of leuprolide (3.75 mg/monthly) or oral danazol. The dose regimen used for this last drug was 600 mg/daily in the majority of patients. 47 women completed a six months therapy, and 42 underwent to a second laparoscopy to evaluate the effects of the treatment. Both danazol and leuprolide were associated to a decreasing of clinical symptoms and to adverse effects that we described in this paper.

Administration, Oral↗
PubMed1993

An in vivo approach to define the role of the LCM, the key polypeptide of cyanobacterial phycobilisomes.

In cyanobacteria, phycobilisomes are regularly arrayed on the surface of the photosynthetic membranes, and their role is to funnel light energy to the underlying photosystem II reaction center. A model has recently been proposed that ascribes to the so-called LCM, a central role in the building up of the phycobilisome, in addition to its role of terminal energy acceptor (Capuano, V., Braux, A.-S., Tandeau de Marsac, N., and Houmard, J. (1991) J. Biol. Chem. 266, 7239-7247). The phycobilisomes of Calothrix sp. PCC 7601 are typically of the type found in most cyanobacteria. Those of Synechococcus PCC 7942 (or PCC 6301) differ in having central cores made up of two instead of three cylinders. We have integrated the Calothrix PCC 7601 apcE gene that encodes the LCM into the chromosome of a Synechococcus PCC 7942 strain. We have observed that the heterologous gene is expressed and that the corresponding product carries a bilin-type chromophore and can be detected in the phycobilisome fraction of the Synechococcus strain. Moreover, it is shown that, in agreement with our model, this LCM can direct the formation of phycobilisomes that have three-cylinder cores.

Bacterial Proteins↗
PubMed1993

[Damage from reperfusion: no-reflow phenomenon].

It is well known that rapid myocardial reperfusion, obtained using thrombolysis and/or PTCA, continues to be the best treatment for evolving myocardial infarction. However, a number of experimental studies have drawn attention to the fact that myocardial recovery following reperfusion may be limited by the onset of numerous deleterious biochemical events which occur during reperfusion. Studies carried out after thrombolysis have shown that the perviousness of the vessel and the existence of flow at the level of the epicardial vessels do not necessarily correspond to the recovery of tissue perfusion since a perfusion defect may persist in the presence of angiographically documented anterograde flow. This discrepancy, which occurs during reperfusion, has been attributed to marked cellular enlargement caused by ischaemia both in irreversibly damaged areas and in those which may potentially recover. In basal conditions, endothelial-neutrophil interaction is inhibited by negatively charged molecules present on endothelial cell membranes and by the production of numerous anti-inflammatory substances. During ischemia, on the other hand, anti-inflammatory and endogenous vasodilating substances are depleted in association with the appearance, on the surface of endothelial cells, of molecules favouring leukocyte adhesion. Of these the glycoprotein which has been characterized in greatest detail is the endothelial leukocyte adhesion molecule (ELAM 1) whose production and appearance on the endothelial surface is linked to cytokine-dependent endothelium activation. Ischemia may also stimulate the activation of neutrophils secreting chemiotactical and vasoconstricting factors, and cytotoxic compounds (reactive oxygen metabolites and proteolyte enzymes).(ABSTRACT TRUNCATED AT 250 WORDS)

Cell Adhesion Molecules↗