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Biomedical subjects

C Vitali

Publications and source records attributed to C Vitali.

At least 73 records · Page 4Linked to original sources
PubMed1979

[Determining levels of bacteria present in urine by means of a gauged loop (author's transl)].

The loop method permits determining of bacteriuria without the necessity for serial dilution, and with a precision greater than that of the dip inoculum test. Results indicate that the method allows us to establish the level of bacteria present in infected urine (approximately 10(5) germs/ml) quite precisely, and furnishes reliable evaluation of high levels. Due to the small quantity removed by the loop, the possible presence of strong concentrations of chemobiotics does not influence the results, as subinhibiting concentrations easily occur with diffusion.

Bacteria↗
PubMedDate not supplied

Cryoglobulins and immune complexes in essential mixed cryoglobulinemia.

The authors review the role, clinico-serological correlations and the putative pathogenetic relevance of a number of immunological parameters in essential mixed cryoglobulinemia. On the whole, in spite of the fact that levels of cryoglobulins, immune complexes, complement as well as reticuloendothelial splenic function are frequently abnormal in this condition, they are generally poorly correlated with clinical features. Therefore, it is postulated that this apparent discrepancy may either be due to the contemporary presence in the same serum of many types of immune complexes with different toxicity, or to the influence of rheumatoid factor on the nature of circulating immune complexes.

Antigen-Antibody Complex↗
PubMedDate not supplied

Plasma-exchange in mixed cryoglobulinemia. Effects on renal, liver and neurologic involvement.

Prolonged plasma-exchange without addition of cytotoxic agents was employed in 16 patients with mixed cryoglobulinemia and kidney, liver or neurologic involvement. Patients with rapidly progressive renal failure or active and reversible lesions generally improved after plasma-exchange, as well as those with a recently occurring sensory-motor peripheral neuropathy. In 4 out of 6 patients with mixed cryoglobulinemia and chronic active hepatitis, plasma-exchange was followed by either normalization or significant reduction of liver enzymes and bromosulfophthalein retention. In all cases responding to plasma-exchange the beneficial effects were evident after the first 2-3 weeks of treatment, while symptoms did not generally recur when the procedures were either slowly tapered or discontinued. Although the pathogenetic mechanism(s) of action of plasma-exchange remains largely unknown, preliminary data indicate that these procedures induce quantitative as well as qualitative changes in the immune system.

Adrenal Cortex Hormones↗
PubMedDate not supplied

Apoptosis in the OC-k3 immortalized cell line treated with different agents.

The aim of this study is to outline the mechanisms leading cochlear cells to die. We utilized an immortalized cell line (OC-k3 cells) derived from the organ of Corti of transgenic mice in order to perform in-depth biochemical studies with no limitations on sample size and number. We probed these cells with cisplatin and gentamicin, two drugs which display in vivo undesired ototoxic side-effects. We investigated cell viability, reactive oxygen species (ROS) production and glutathione (GSH) levels and tested the effects of different concentrations of cisplatin and gentamicin from 0 to 48 h. Results show that cells undergo a dose- and treatment-time-dependent apoptosis characterized by nuclear fragmentation, integrity of the cell membrane and mitochondria, and absence of DNA endonuclease activity. During the early part of treatment, ROS production increases and intracellular GSH decreases, probably due to the activation of protein kinase C alpha. Use of antioxidants such as N-acetylcysteine, GSH and vitamin C rescues cells from apoptosis almost completely. Overall, these data indicate that ROS generation might play a central role in inducing inner ear cell apoptosis and may have an additive role in the ageing process.

Animals↗
PubMedDate not supplied

[Erythromycin: serum and urine levels following rectal administration (author's transl)].

The serum and urine levels obtained form administration of Erythromycin are generally good and the antibiotic is absorbed in a similar way; this happens also for the other ways of administration. We have noticed a variability in the absorption of antibiotic as the different components present in the suppositories administered.

Administration, Topical↗
PubMedDate not supplied

Disease activity in systemic lupus erythematosus: report of the Consensus Study Group of the European Workshop for Rheumatology Research. I. A descriptive analysis of 704 European lupus patients. European Consensus Study Group for Disease Activity in SLE.

Using a detailed questionnaire, the cumulative historical and current demographic, clinical and serological data on 704 SLE patients from 29 European centres and 14 countries have been assessed. Ninety-three percent of the patients were Caucasian and the female/male ratio was 10:1. Analysis of the cumulative incidence showed that arthralgia/arthritis (94%), rash (69%), Raynaud's phenomenon (49%), serositis (44%) and renal disease (38%) were the most frequent clinical manifestations. Virtually all the patients (98%) were antinuclear antibody positive, while anti-ds-DNA antibodies (76%), hypocomplementaemia (71%) and anti-Ro(SSA) antibodies (35%) were frequent serological abnormalities. Whilst much of this data is in line with previous reports, it is notable that renal, lung, and central nervous system involvement and the frequency of rheumatoid factor, anti-Sm and anti-RNP antibodies were much lower than in most comparable series in the United States. We assume that ethnic differences and the greater present awareness of lupus could explain this variations. Low dose corticosteroids, non-steroidal anti-inflammatory drugs and anti-malarials were used to treat over half of the patients, 75% of whom were between 15 and 55 years of age. This report offers a useful overview of lupus both clinically and serologically in Europe in the 1990's.

Adolescent↗
PubMedDate not supplied

Disease activity in systemic lupus erythematosus: report of the Consensus Study Group of the European Workshop for Rheumatology Research. II. Identification of the variables indicative of disease activity and their use in the development of an activity score. The European Consensus Study Group for Disease Activity in SLE.

A European Consensus Group study, involving 29 centres from 14 countries, was performed in order to reach agreement on the definition of disease activity in systemic lupus erythematosus (SLE) and to construct a new disease index. Data on 704 lupus patients were collected and analysed, using univariate and multivariate statistical procedures, to select those clinical and laboratory features of the disorder which best correlate with the global assessment of disease activity assigned to the patients by the physician of each participating centre. A combination of 15 clinical and laboratory variables was shown to be the best predictor of disease activity in SLE. A European Consensus Lupus Activity Measurement (ECLAM) was then formulated. This index included the 15 selected variables, weighted (with some adjustments) according to their respective regression coefficients in the multivariate model. ECLAM appears to be an effective instrument for scoring patients with different degrees of disease activity. This is the first SLE disease activity index based on data from a very large number of lupus patients followed at a large number of lupus centres in different countries. It might therefore very well serve as a standardised measure for future European clinical studies. Final assessment of the validity, reliability and sensitivity of this index is now underway.

Europe↗
PubMedDate not supplied

Disease activity in systemic lupus erythematosus: report of the Consensus Study Group of the European Workshop for Rheumatology Research. III. Development of a computerised clinical chart and its application to the comparison of different indices of disease activity. The European Consensus Study Group for Disease Activity in SLE.

In the first phase of this study, a data-base containing clinical and laboratory findings of 704 patients with systemic lupus erythematosus (SLE), originating from 29 centres and 14 countries, was used to assess the validity of 4 common indices of disease activity, SLAM, BILAG, SLEDAI and SIS. The physician's judgement of activity was assumed as the unique reference criterion (gold standard). Computer programmes were developed to calculate automatically the 4 activity indices; this computation appeared to correspond with manual computations in a sample of 60 appropriately selected cases. All 4 indices were closely correlated with each other (r in the range of 0.716 to 0.872), and with the physician's score (r in the range of 0.620 to 0.719). In the second phase of the study the activity index developed in part I (ECLAM) was prospectively validated, and its performance compared to that of the other scales, both as a single state index and as a transition index (i.e., its ability to assess disease activity at a single point in time and to detect variations in consecutive readings). A computer-assisted clinical chart was prepared for this purpose. This chart allowed us to calculate automatically all the indices. Two consecutive observation times (time 0, and time 1 three months later) were included in the study protocol. Data on 75 patients from 19 centres were collected, and each patient was observed twice. All the computed indices were closely correlated, both at time 0 (r ranging from 0.725 to 0.884), and at time 1 (r ranging from 0.607 to 0.833).(ABSTRACT TRUNCATED AT 250 WORDS)

Diagnosis, Computer-Assisted↗
PubMedDate not supplied

Diagnostic criteria for Sjögren's syndrome: the state of the art.

The diagnostic approach to Sjögren's syndrome (SS) is devoted to the assessment of glandular and extraglandular features of the disorder. Although this syndrome has been attracting growing interest from many investigators in the last few decades, complete agreement on the diagnostic tools to be used for this syndrome has not yet been reached. Finding a rational diagnostic approach to Sjögren's syndrome is even further complicated by the fact that this disease may exist alone, or in association with a number of extraglandular systemic manifestations or a well-defined systemic autoimmune disease. In this paper the entire matter has been critically reviewed in order to evidentiate the differences among the various diagnostic procedures proposed by different authors and to underline the need for a uniform classification criteria for SS.

Eye↗
PubMedDate not supplied

[Daily intake of macro and trace elements in the diet. 4. Sodium, potassium, calcium, and magnesium].

To complete the picture of the daily dietary intake of minerals, sodium, potassium, calcium and magnesium have now been considered. The study has been carried out in the Italian Marches Region after carefully evaluating the food consumption habits of the population. The foodstuffs comprising the 70 diets examined were collected in institutional canteens and private homes immediately prior to meals. The food was sampled ready for consumption as it had thus undergone the various preparation and cooking procedures, during which considerable changes in mineral content occur. In comparison with the various food consumption standards, the amount of sodium found appears excessively high (4.8 g/d) whereas that of magnesium is insufficient (0.24 g/d). A high sodium intake, and more recently a high Na/K ratio, have been associated with hypertension. Also a lack of magnesium and a high Ca/Mg ratio have repeatedly been associated with hypertension risk. The data to emerge from our study: a high sodium intake, an insufficiency of magnesium, and thus high Na/K and Ca/Mg ratios, would appear likely to enhance cardiovascular disease risk. Even though not all Authors agree on the existence of such correlations, a more correct diet as regards mineral intake is undoubtedly something to encourage.

Calcium, Dietary↗
PubMedDate not supplied

[The socioeconomic and health status of the elderly in the town of Camerino].

The Authors, after outlining the problem of elderly people, refer to data from their research defining precisely the particular demographic-social situations of the elderly in the city of Camerino. Research, using the same questionnaire, was carried out into the most frequent state of health and pathology of elderly people living in the city of Camerino. The most significant data provided some points for discussion as well as considerations relative to prevention and care in old age. The occasion was taken for stimulating our Society to not neglect elderly people but rather to find the right solutions for maintaining their standard of living at the highest level possible.

Aged↗