1,721,021 research outputs found
Occurrence of the scalloped ribbonfish Zu cristatus(Lampridiformes) in coastal waters of the central Tyrrhenian Sea, Italy
Full text linkThe occurrence of two individuals of Zu cristatus at 2 m depth in coastal waters of the Gulf of Castellamare (Tyrrhenian Sea, Italy) together with records of this rare pan-Oceanic mesopelagic species is reported. Analyses of two mitochondrial genes (12 s and 16 s; 936 bp) revealed a 2.6% sequence divergence between Mediterranean and Pacific (Japanese) samples of the species
Indagine mediante ultrasonografia doppler sull'incidenza dell'aterosclerosi dei vasi epiaortici in 61 soggetti con arteriopatia obliterante cronica degli artii inferiori
No full textComarison between ultrasonographic and hystopathological findings in carotid atherosclerosis
No full textBehavioural responses of the colonial sea squirt botrylloides violaceus oka to suspended food micro‐ particles in laboratory cultures
Full text linkViolet sea squirts are noteworthy model organisms, because they provide insights into various physiologic processes, including cell senescence, ageing, apoptosis and allorecognition. Consequently, their culture is critical to permit experimental studies. Most papers refer to short periods of rearing using various feeds, both living and conserved, missing a formal justification for their use or indications of their actual nutritional value. Here, we use two behavioural responses— the percentage of open siphons and the frequency of zooid contractions—as compared to the abundance of suspended microparticles during feeding tests, to identify feeds able to promote filter-feeding. The results will enable to formulate compound diets that maximise positive physiological responses. Our tests demonstrated that plant items, such as dry microalgae and cyanobacteria (Arthrospira platensis, commercially known as Spirulina), along with living planktonic Haptophyta (Isochrysis galbana), trigger clear positive reactions, represented by a higher frequency of zooid contractions and larger proportions of open siphons. These responses correspond to decreases in the concentrations of suspended microparticles during the experiment and indicate higher filter-feeding activity. In contrast, feeds commonly administered to colonies, such as milk powder, dried eggs and artificial plankton, triggered negative behavioural responses, and their intake was lower during the feeding trials
Echographic study, of the carotid atherosclerotic lesions: comparison with hystopathological findings
No full textA pilot evaluation of the effect of defibrotide in patients affected by peripheral arterial occlusive disease
No full textThis was a random double-blind study versus placebo designed to assess the effectiveness and tolerability of defibrotide in patients with chronic peripheral vascular disease (PVD), Leriche stage II. A total of 20 male outpatients (mean age 58.8 years) were selected and treated with placebo for 2 weeks (run-in period), and then allocated randomly to treatment with defibrotide (200 mg/day, intramuscular, n = 10) or matched placebo (n = 10) for 90 days. Before intake and at 15, 30, 60, and 90 days of treatment, each patient received a Doppler ultrasound examination of the lower limbs, and the residual perfusion index (Winsor) was calculated at rest and immediately after a symptom-limited treadmill test. Absolute walking distance was measured in addition. Blood samples were taken for routine laboratory tests before intake and at 30 and 90 days of treatment. All patients completed the trial without adverse effects; no meaningful alterations of laboratory test returns were detected. Patients receiving defibrotide showed a significant increase of the Winsor index after exercise at 90 days versus basal (mean 0.47 +/- 0.04 vs. 0.43 +/- 0.05, p less than 0.05), and a parallel increase of walking distance (basal 288 +/- 42.3 m vs. 368 +/- 46.6 at 60 days, p less than 0.05, and 407 +/- 64.3 m at 90 days, p less than 0.01). No improvement was seen in the placebo group. These preliminary results suggest that defibrotide may prove beneficial to patients with PVD; further studies are needed to find the most appropriate dosage regime
L'ecografia carotidea nell'arterosclerosi:comparazione con i riscontri anatomo-patologici
No full textCnidocyst morphology and distribution in Corallium rubrum (Cnidaria, Anthozoa)
No full textCnidocytes are the most specialized cells of cnidarians and the structural morphology of their capsules, the cnidocysts, has been recognized as an important taxonomic character within the phylum Cnidaria. Nevertheless, this character has been almost completely neglected by specialists of alcyonarians (Octocorallia), due mainly to the difficulties inherent in the examination of soft tissues lacking calcareous sclerites and the supposed homogeneity of the Octocorallia cnidome. Two different types of cnidocysts, holotrichous isorhizas and atrichous isorhizas, are described here for the first time from the Mediterranean red coral Corallium rubrum (L.) (Octocorallia). Proposed evolutionary trends of anthozoan cnidocysts are also discussed
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