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Biomedical subjects

G Carlino

Publications and source records attributed to G Carlino.

13 recordsLinked to original sources
PubMed1994

Effects of peripheral cold exposure on microvascular dynamics in systemic sclerosis.

OBJECTIVE: To determine the influence of cold exposure on microvascular permeability in systemic sclerosis (SSc). METHODS: Thirteen patients with SSc were studied by dynamic fluorescence videomicroscopy under basal conditions and after exposure to cold. RESULTS: Exposure to cold caused a significant reduction in the interstitial concentration of sodium fluorescein (P < 0.05 to 0.001). CONCLUSION: Our findings show that cold exposure has a striking effect on microvascular dynamics in SSc.

Adult↗
PubMed1994

Acute effects of single dose nifedipine on cold-induced changes of microvascular dynamics in systemic sclerosis.

Calcium-channel blockers are widely used in the treatment of systemic sclerosis (SSc), but their in vivo influence on microcirculation is not fully elucidated. We evaluated the acute effect of nifedipine on the cold-induced changes of microvascular dynamics in SSc. Eleven SSc patients and seven healthy volunteers were studied. Dynamic aspects of the nailfold microcirculation (appearance time at the nailfold, transcapillary diffusion, interstitial distribution and interstitial clearance of sodium fluorescein given i.v.) were quantitatively assessed by a computer-aided fluorescence videomicroscope. Fluorescent light intensities (FLIs) at predefinite pericapillary and interstitial sites were measured under three experimental conditions: (1) baseline; (2) after cold test; (3) after single oral administration of 10 mg of nifedipine 5 min before cold exposure. The interval between the intravenous injection of sodium fluorescein and the first appearance of the dye at the nailfold significantly increased after cold exposure in the SSc patients (224.1 +/- 182.3 s vs 27.5 +/- 25.1 s at baseline) (P = 0.0026), but not in the controls (28.0 +/- 13.3 s vs 29.6 +/- 12.4 s at baseline). The effect of cold exposure on the appearance of the dye was not significantly antagonized by nifedipine (112.7 +/- 91.8 s) in the SSc patients (P = 0.07). Cold exposure significantly decreased transcapillary diffusion and interstitial distribution of sodium fluorescein in the SSc patients (P < 0.016), but not in the controls. The cold-induced changes of FLI values were antagonized by nifedipine in the SSc patients (P < 0.016), but not in the controls.(ABSTRACT TRUNCATED AT 250 WORDS)

Administration, Oral↗
PubMed1994

Capillary permeability in fibromyalgia.

OBJECTIVE: To examine capillary permeability in fibromyalgia (FMS) we studied the nailfold capillaries of 13 unselected patients with FMS and 9 healthy controls using dynamic fluorescence videomicroscopy. METHODS: The transcapillary permeability of a 20% solution of sodium fluorescein injected into an antecubital vein was assessed by videodensitometric analysis. The pericapillary and interstitial fluorescent light intensities (FLI) were calculated at different sites on a transverse axis crossing the selected capillary. RESULTS: Fluorescence videomicroscopy revealed no abnormalities in the pattern of dye distribution around the nailfold capillaries in the patient group. Videodensitometric analysis showed a trend to an increased early transcapillary diffusion in patients with FMS, but the difference was only significant at 3 s from the first appearance of the dye (p < 0.05). From 10 s to 1 min after the dye's appearance, the mean FLI in the patients equalled that of the controls. The patients with FMS showed an earlier but lower FLI peak. Moreover, the FLI were significantly lower in the patients than in the controls from 5 to 30 min after the dye appearance in all of the sites of the densitometric analysis (p < 0.05). Thirty min after the first appearance of the dye, the FLI was reduced by more than 50% in the patient group compared to the controls. CONCLUSION: Our results indicate that transcapillary permeability and the interstitial persistence of the tracer in FMS are significantly reduced compared to controls. This difference may be caused by the abnormal microvascular dynamics induced by low capillary flow and/or capillary bed hypotension.

Adult↗
PubMed1993

Labial capillary microscopy in systemic sclerosis.

OBJECTIVES: To investigate whether in vivo capillary microscopy of the lower lip mucosa can be used to assess microvascular disease in systemic sclerosis. METHODS: Thirteen patients with systemic sclerosis and 11 healthy control subjects were studied by conventional nailfold capillary microscopy and labial capillaroscopy. The following parameters were analysed: loop length; loop width (maximum distance between the arteriolar and venular limbs); loop density (number of capillaries/mm2); venular plexus visibility; megacapillaries; and the architectural arrangement of the capillary network. RESULTS: A typical 'scleroderma pattern' at the nailfold was observed in 12 of 13 (92%) patients with systemic sclerosis. Labial capillaroscopy showed a different morphological pattern of microangiopathy. A diffuse architectural derangement of the capillary network was the most striking abnormality in 12 (92%) patients. Labial capillaries in the patients with systemic sclerosis were shorter (mean (SD) loop length 133 (32.2) microns) than in healthy controls (211 (48.4) microns) and showed an increased loop width (41.7 (13.1) v 27.6 (5.5) microns in controls. The loop density was 10.5 (4.6) capillaries/mm2 in patients with systemic sclerosis and 9 (1.7) capillaries/mm2 in controls. Labial capillaroscopy in patients with systemic sclerosis did not provide definite evidence of enlarged capillaries or avascular areas, or both, even where such abnormalities were clearly evident at the nailfold. CONCLUSIONS: This study shows that labial capillary microscopy is a simple, non-invasive technique which allows a careful morphological assessment of the mucosal microcirculation. Labial capillaroscopy in patients with systemic sclerosis showed significant microvascular changes with respect to the controls. The results of labial and nailfold capillaroscopy are not superimposable, even if some common findings, such as architectural derangement, are present.

Adult↗
PubMed1992

Nailfold capillary permeability in psoriatic arthritis.

This study is the first report of the permeability status of nailfold capillaries in psoriatic arthritis (PA). "Traditional" nailfold capillary microscopy and intravital fluorescence videomicroscopy were carried out at the nailfold of 13 patients with PA. Twenty five healthy subjects served as controls for nailfold capillary microscopy, and 15 out of these for fluorescence videomicroscopy. The following parameters were assessed: capillary length, apex width, maximum loop width, maximum limb width, loop density, visibility of subpapillary venular plexus, loop tortuosity, transcapillary diffusion, and interstitial concentration at different sites and times of Na-fluorescein given in intravenous bolus. Morphometric analysis of capillaroscopic findings showed a significant increase of loop length (mean +/- SD: 290.1 +/- 73.5 microns) when compared to healthy controls (223.3 +/- 51.9 microns) (P < 0.02). Transcapillary passage of Na-fluorescein was homogeneous and symmetric both in PA patients and in controls. Mean transcapillary and interstitial diffusion was not significantly enhanced at the nailfold in PA patients. Our data support the view that PA is not characterized by a specific capillaroscopic pattern and/or significant abnormalities of microvascular dynamics at the nailfold.

Adult↗
PubMed1986

[Legionnaire's disease in Italy: case list contribution].

The authors describe two cases of Legionnaires disease brought to their attention and diagnosed through serological research utilizing two different methods: the indirect immunofluorescence and the microagglutination, in cooperation with the Higher Institute of Health. They conclude with some considerations upon the real necessity of circumscribed eziological research in all the cases of "hospitalized acute respiratory illness" and confirm the effectiveness of the treatment with macrolides in the Legionella Pneumophila infections.

Adult↗
PubMed1984

Uterine cervical tumor metastases and their treatment.

Uterine cervical carcinoma is a locoregional disease. However, particularly in advanced stages, in the presence of N+ and pelvic relapse, it may produce secondary lesions located far from it. In our case series, consisting of 473 portio carcinomas treated at the Institute of Radiology of the U.C.S.C., we found distant metastases in 6.76% of the cases. This study examines the cases of metastasis in relation to stage, histology, risk-factors, treatment of the primary tumour and survival after the treatment of the secondary lesions.

Female↗
PubMed1984

Interstitial radiotherapy with Ir192 in vulvar cancer.

Radical surgical intervention is not always possible in vulvar tumours, particularly in infiltrating forms of paraurethral locations. In our case-series, the supplementary performance of Curietherapy, particularly with Radium substitutes (Iridium 192) and following the afterloading method, has enabled us not only to obtain long disease-free periods but also, coupled with the "large volume" of External Radiotherapy, to master forms exceeding the surgical action scope.

Brachytherapy↗
PubMedDate not supplied

Diabetes mellitus and chronic heart failure.

Cardiovascular disease has a high prevalence in diabetic patients. Diabetes mellitus is an important risk factor for atherosclerosis and coronary disease mainly through obesity, hyperlipidemia, insulin-resistance, hyperinsulinemia, hyperglycemia and altered homeostasis. The correlation between diabetes and chronic heart failure is not widely documented in the literature. According to the Framingham study, the incidence of cardiovascular morbidity per year is 39.1% in diabetic males and 17.2% in diabetic females; chronic heart failure afflicts 7.6% of diabetic males and 11.4% of diabetic females. Actual knowledge about pathophysiology suggests that cardiac involvement in diabetes is not only related to macrovascular injury but also to other factors, such as alterations of autonomic nervous system, that can contribute to diabetic cardiopathy. The present study evaluated the prevalence of chronic heart failure in an Italian diabetic population in order to discuss the rationale of the therapeutic strategies.

Journal Article↗
PubMedDate not supplied

The "endothelium/platelet unit" in hypertrophic osteoarthropathy.

Various pathogenetic theories of hypertrophic osteoarthropathy (HOA) have been proposed (neurogenic, hormonal, artero-venous shunts, genetic theory), but none of them is able to satisfactorily explain the genesis of HOA. The hypothesis of a central role of the "endothelium/platelet unit" was recently discussed. Above all, the release of the platelet derived growth-factor (PDGF) contained in platelet granules is particularly interesting. In order to assess the microvascular involvement in HOA we set up a research project whose aims were to evaluate the morphology of the capillary network at the nailfold, the dynamic aspects of microcirculation and in vivo platelet function. Since this study is still in progress, for the time being we present only a few preliminary results.

Adult↗
PubMedDate not supplied

Reiter's syndrome.

Explore the source record for details and available documents.

Adult↗