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Chunduri S, Dobogai LC, Bruno A, Kadkol S, Rondelli D. Does post-transplant treatment with imatinib mesylate inhibit graft-versus-leukemia? Leukemia 2005; 19:456-7; author reply 457. [PMID: 15674413 DOI: 10.1038/sj.leu.2403656] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zoccali R, Bruno A, Muscatello MRA, La Torre D, Paterniti A, Corica F, Damiano MC, Di Rosa AE, Meduri M. Panic-agoraphobic spectrum in obese binge eaters. Eat Weight Disord 2004; 9:264-8. [PMID: 15844398 DOI: 10.1007/bf03325080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
Abstract
OBJECTIVE This study investigated the frequency of the panic-agoraphobic spectrum symptoms in a sample of obese subjects affected by Binge Eating Disorder (BED) vs controls. METHOD Fifty obese with BED were matched by age, sex and marital status to twenty-five normal weight controls. The Structured Clinical Interview For Panic-Agoraphobic Spectrum--SCI-PAS was administered to all participants. RESULTS Obese subjects with BED presented significantly higher frequencies of typical and atypical panic symptoms (82% vs 8%, p<0.0001), agoraphobia (58% vs 12%, p=0.002) and reassurance orientation (56% vs 8%, p=0.001) than controls. DISCUSSION BED frequently co-occurs with other major psychiatric disorders, traditionally assessed using categorical methods of classification of mental disorders. The spectrum of the subthreshold, atypical and partial symptoms of full-blown mental disorders, often neglected by categorical approach, may also affect subjective well-being and functioning as full-blown disorders. The identification of the subthreshold symptomatology may have relevant implications for the response to treatment and the outcome of the eating disorder.
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Nunez R, Garay N, Bruno A, Villafane C, Bruno E, Filgueira L. Functional and structural characterization of two populations of human monocyte-derived dendritic cells. Exp Mol Pathol 2004; 77:104-15. [PMID: 15351233 DOI: 10.1016/j.yexmp.2004.05.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2004] [Indexed: 11/23/2022]
Abstract
BACKGROUND The characterization of human monocyte-derived dendritic cells (HM-DC) subsets have been a very difficult and elusive task because of the lack of appropriate reagents. We, therefore utilized several diverse approaches to evaluate two populations of HM-DC including flow cytometry, ultra-structural evaluation by electron microscopy, and functional assays. In addition, we studied the kinetics of the expression of antigens on HM-DC at diverse intervals of time and identify surface markers and functional differences of these two HM-DC subsets. RESULTS This study identified that a phenotype of HM-DC as defined by CD11c+, CD86+, and CD40+ could be separated in the presence or absence of TGF-beta1 into two different subsets of DC: (i) HM-DC without Birbeck granuli (Mo-DC) and (ii) HM-DC with Birbeck granuli (Mo-LC). Furthermore, the functional studies showed that the HM-DC treated with TGF-beta1 (Mo-LC) exhibited the presence of Birbeck granuli and could actively divide. In addition, after undergoing more than four cell divisions, these cells split into at least two additional subsets of Mo-LC: (iia) Mo-LC with high forward scatter (FSC) and (iib) Mo-LC with normal FSC. In contrast, the Mo-DC cultured in absence of TGF-beta1 did not exhibit Birbeck granuli, showed reduced ability to divide, and kept the normal FSC when analyzed. CONCLUSIONS This study enabled us to determine in HM-DC: (i) the existence of antigenic and functional differences between various subpopulations of Mo-DC and Mo-LC; (ii) the existence of differences in the kinetics of antigens expression among the subsets of Mo-DC and Mo-LC; (iii) the existence of specific markers for each of the subpopulations of HM-DC.
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Profita M, Gagliardo R, Di Giorgi R, Bruno A, Riccobono L, Bonanno A, Bousquet J, Vignola AM. In vitro effects of flunisolide on MMP-9, TIMP-1, fibronectin, TGF-beta1 release and apoptosis in sputum cells freshly isolated from mild to moderate asthmatics. Allergy 2004; 59:927-32. [PMID: 15291899 DOI: 10.1111/j.1398-9995.2004.00516.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND Corticosteroids play an important role in inflammation and remodelling of airways and are considered an important therapeutic target in asthma. Inflammation in asthma is characterized by a dysregulation of eosinophil apoptosis and of markers of airways remodelling. We evaluated the ability of flunisolide to inhibit in vitro the release of metalloproteinases-9 (MMP-9), tissue inhibitor metalloproteinases-1 (TIMP-1), transforming growth factor (TGF-beta) and fibronectin by sputum cells (SC) as well as to induce sputum eosinophil apoptosis. METHODS The SC, isolated from induced sputum samples of 12 mild-to-moderate asthmatics, were cultured for 24 h in the presence or absence of flunisolide (1, 10 and 100 microM). The release of mediators was assessed by enzyme-linked immunosorbent assay (ELISA) whereas apoptosis was studied by TUNEL technique. RESULTS Flunisolide (10 microM) significantly reduced MMP-9 and TIMP-1 (P = 0.0011 and P < 0.0001 respectively) and increased MMP-9/TIMP-1 molar ratio (P = 0.004). In addition, flunisolide decreased TGF-beta and fibronectin release by SC (P = 0.006; and P < 0.0001 respectively) and increased eosinophil apoptosis (P < 0.001). CONCLUSIONS These results demonstrate that flunisolide may play an important role in the inhibition of airway inflammation and remodelling, by promoting the resolution of eosinophilic inflammation and by inhibiting the release of MMP-9, TIMP-1, TGF-beta and fibronectin.
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Gatti S, Gramegna M, Klersy C, Madama S, Bruno A, Maserati R, Bernuzzi A, Cevini C, Scaglia M. LEISHMANIOSI VISCERALE: SENSIBILITA’ E SPECIFICITÀ DI TECNICHE DIAGNOSTICHE ”CLASSICHE” E DI UNA METODICA IN “NESTED” PCR. MICROBIOLOGIA MEDICA 2004. [DOI: 10.4081/mm.2004.3961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Vachier I, Vignola AM, Chiappara G, Bruno A, Meziane H, Godard P, Bousquet J, Chanez P. Inflammatory features of nasal mucosa in smokers with and without COPD. Thorax 2004; 59:303-7. [PMID: 15047949 PMCID: PMC1763801 DOI: 10.1136/thx.2003.006650] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND To investigate whether nasal and bronchial inflammation coexists in chronic obstructive pulmonary disease (COPD), nasal and bronchial biopsy specimens from seven control subjects, seven smokers without COPD, and 14 smokers with COPD were studied. METHODS Nasal and bronchial biopsy specimens were taken from the same patients during bronchoscopy and squamous cell metaplasia and the thickness of the epithelium and basement membrane were measured. The numbers of eosinophils (EG2), neutrophils (elastase), macrophages (CD68), and CD8 T lymphocytes (CD8/144B) were assessed by immunohistochemistry. RESULTS Smokers with and without COPD had squamous metaplasia in the nasal and bronchial epithelium. In all groups the thickness of the nasal epithelium was greater than that of the bronchial epithelium. The thickness of the basement membrane was similar in nasal and bronchial biopsy specimens from smokers with and without COPD, but was greater in the bronchi than in the nasal epithelium of controls. Eosinophil number was higher in the nasal and bronchial mucosa of smokers without COPD than in smokers with COPD or controls. Neutrophil number was higher in the nasal and bronchial mucosa of smokers with COPD than in smokers without COPD or controls. CD8 T lymphocyte numbers were similar in smokers with and without COPD and higher than in controls. There were fewer macrophages in nasal and bronchial biopsy specimens from smokers without COPD than in those with COPD. CONCLUSION Nasal and bronchial inflammation coexists in smokers and is characterised by infiltration of CD8 T lymphocytes. In smokers without COPD this feature is associated with an increased number of eosinophils, while in those with COPD it is linked to an increased number of neutrophils in both nasal and bronchial biopsy specimens.
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Nunez R, Garay N, Villafane C, Bruno A, Lindgren V. Description of a flow cytometry approach based on SYBR-14 staining for the assessment of DNA content, cell cycle analysis, and sorting of living normal and neoplastic cells. Exp Mol Pathol 2004; 76:29-36. [PMID: 14738866 DOI: 10.1016/j.yexmp.2003.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
RATIONALE This study aimed to expand the utilization of a simplified flow cytometric approach that employing SYBR-14/PI staining into broader flow cytometry applications, including (i) measurement of the DNA content; (ii) performing cell cycle analysis on mammalian cells; and (iii) sorting of live SYBR-14-stained mammalian cells based on DNA content. MATERIAL AND METHODS Cell lines of human origin were stained with SYBR-14 and propidium iodide (PI) and assessed by a dual-color flow cytometry. Finally, sorting of living SYBR-14-stained human cell lines was performed. RESULTS Dual staining with SYBR-14 and PI of human cells followed by flow cytometry analysis demonstrates that in addition to quality assessment, this staining could be utilized to determinate the DNA content on mammal cells. In addition, it resolves the diploid, tetraploid, and aneuploid DNA content. Furthermore, the SYBR-14-stained mammal cells were efficiently sorted based on DNA content and live cells were obtained. All these features have not been previously described with the utilization of this staining approach. CONCLUSIONS Results of this study demonstrate that this flow cytometric approach not only allows assessment of the viability of cells, but also the DNA content of mammal cells. In addition, this approach allows one to sort viable cells stained with SYBR-14. These findings open-up unexpected and unrestricted avenues for sorting of living mammal cells and provide significant advantages over the traditionally cumbersome sorting approaches for living cells, which demand very specialized and expensive UV light sources as well as sophisticated sorting procedures.
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Plo I, Bono F, Bezombes C, Alam A, Bruno A, Laurent G. Nerve growth factor-induced protein kinase C stimulation contributes to TrkA-dependent inhibition of p75 neurotrophin receptor sphingolipid signaling. J Neurosci Res 2004; 77:465-74. [PMID: 15264216 DOI: 10.1002/jnr.20189] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Previous studies have established that reciprocal interactions between the low-affinity p75 nerve growth factor (NGF) receptor (p75(NTR)) and the high-affinity TrkA NGF receptor can dictate the cellular response to NGF. As the most important interaction, TrkA signaling was found to inhibit p75(NTR)-mediated sphingomyelinase (SMase) stimulation, ceramide production, and apoptosis. However, the mechanism by which TrkA counteracts p75(NTR)-coupled sphingolipid signaling is still unclear. Considering the stimulatory effect of NGF on protein kinase C (PKC) activity, we investigated the role of PKC in TrkA/p75(NTR) signaling interaction. In this study, we found that, in SK-N-BE cells, which selectively express p75(NTR), phorbol ester-induced PKC stimulation resulted in the abrogation of SMase stimulation and ceramide production induced by NGF. Moreover, in SK-N-BE neuroblastoma cells, which selectively express TrkA, NGF stimulated global PKC activity through two independent pathways involving phospholipase Cgamma (PLCgamma) and phosphoinositide-3 kinase (PI3K). In SH-SY5Y, another neuroblastoma cell line, which coexpresses TrkA and p75(NTR), NGF induced PKC stimulation through a TrkA/PI3K signaling pathway, whereas there was no ceramide production. However, in these cells, the inhibition of TrkA, PI3K, and PKC resulted in the restoration of NGF-induced ceramide production. Thus, our study demonstrates for the first time that TrkA interferes with p75(NTR) signaling through a PI3K/PKC-dependent mechanism.
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Ravandi F, Kadkol SS, Ridgeway J, Bruno A, Dodge C, Lindgren V. Molecular identification of CBFbeta-MYH11 fusion transcripts in an AML M4Eo patient in the absence of inv16 or other abnormality by cytogenetic and FISH analyses--a rare occurrence. Leukemia 2003; 17:1907-10. [PMID: 12970795 DOI: 10.1038/sj.leu.2403056] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Bruno G, Coppola M, Eleuteri E, Barucco M, Molfetta R, Bruno A, Angelini L. An unusual association of malignant melanoma and small cell lung cancer: case report. An eleven-year-follow-up. LA CLINICA TERAPEUTICA 2003; 154:271-5. [PMID: 14618946 DOI: pmid/14618946] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The authors report the case of a patient affected by malignant melanoma and small cell lung cancer. After having underlined the rareness of this pathological association, reviewing the most recent literature, the description of the clinical case aims at opening a discussion on how the surgical treatment performed, associated to chemotherapy, brought to an unhoped-for success, also helped by an unexpected combination of events that were absolutely out of any protocol. Eleven years later, at the present follow-up, the patient shows a complete remission of both diseases.
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Bruno G, Tega F, Bruno A, Graf U, Corelli F, Molfetta R, Barucco M. The role of substance P in cerebral ischemia. Int J Immunopathol Pharmacol 2003; 16:67-72. [PMID: 12578734 DOI: 10.1177/039463200301600110] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Tackykinins are involved in the inflammatory process of a large number of diseases. The role of the tachykinins in ischemic brain injury was evaluated by the serum levels of Substance P (SP), one of the most known tachykinins and detected by a competitive enzyme immunoassay. The study was performed in 15 human females and 3 human males with typical manifestation of complete stroke (12 cases) or transient ischemic attack (6 cases). The mean SP level in the serum of patients with transient ischemic attack (0.53+/-0.25 ng/ml) and of patients with complete stroke (0.31+/-0.14 ng/ml), showed significantly higher values than in controls (0.10+/-0.02 ng/ml). Moreover, in transient ischemic attack, the SP values were significantly higher than in cerebral complete stroke. But SP levels, based on the timings of classification of patients (i.e. before 12 hours: 0.34+/-0.15 ng/ml vs. 12 to 24 hours: 0.26+/-0.11 ng/ml) with brain injury, did not show any significant difference. Both values anyway were significantly higher than in controls. Our original results demonstrate the SP increase during cerebral ischemia. Further studies are necessary to verify if SP has an effective physiopathological role in the neurological ischemic damage, or if it is only a concomitant phenomenon. Our data, if confirmed, will be particularly important, not only to improve the knowledge of cerebral ischemic injury, but also for diagnosis and therapeutic approaches.
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Bruno A, Levine SR, Frankel MR, Brott TG, Lin Y, Tilley BC, Lyden PD, Broderick JP, Kwiatkowski TG, Fineberg SE. Admission glucose level and clinical outcomes in the NINDS rt-PA Stroke Trial. Neurology 2002; 59:669-74. [PMID: 12221155 DOI: 10.1212/wnl.59.5.669] [Citation(s) in RCA: 372] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Hyperglycemia during acute ischemic stroke may augment brain injury, predispose to intracerebral hemorrhage (ICH), or both. METHOD To analyze the relationship between admission glucose level and clinical outcomes from acute ischemic stroke, the authors performed multivariate regression analysis with the National Institute of Neurological Disorders and Stroke recombinant tissue plasminogen activator (rt-PA) Stroke Trial data. Neurologic improvement was defined as improvement on the NIH Stroke Scale by 4 or more points from baseline to 3 months, or a final score of zero. Favorable outcome was defined as both Glasgow Outcome score of 1 and Barthel Index 95 to 100 at 3 months. Symptomatic ICH was defined as CT-documented hemorrhage temporally related to clinical deterioration within 36 hours of treatment. Potential confounding factors were controlled, including acute treatment (rt-PA or placebo), age, baseline NIH Stroke Scale score, history of diabetes mellitus, stroke subtype, and admission blood pressure. RESULTS There were 624 patients enrolled within 3 hours after stroke onset. As admission glucose increased, the odds for neurologic improvement decreased (odds ratio [OR] = 0.76 per 100 mg/dL increase in admission glucose, 95% CI 0.61 to 0.95, p = 0.01). The relation between admission glucose and favorable outcome depended on admission mean blood pressure (MBP): as admission MBP increased, the odds for favorable outcome related to increasing admission glucose levels progressively decreased (p = 0.02). As admission glucose increased, the odds for symptomatic ICH also increased (OR = 1.75 per 100 mg/dL increase in admission glucose, 95% CI 1.11 to 2.78, p = 0.02). Admission glucose level was not associated with altered effectiveness of rt-PA. CONCLUSIONS In patients with acute ischemic stroke, higher admission glucose levels are associated with significantly lower odds for desirable clinical outcomes and significantly higher odds for symptomatic ICH, regardless of rt-PA treatment. Whether this represents a cause and effect relationship remains to be determined.
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Bruno A, Pesce G, Rusciano G, Sasso A. Detection and spectroscopy of the v1 + v3 band of N2O by difference-frequency spectrometer at 3 microm. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2002; 58:2481-2488. [PMID: 12353698 DOI: 10.1016/s1386-1425(02)00065-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
We report the realisation of a laser spectrometer in the mid-infrared spectral region based on difference-frequency generation in a periodically poled LiNbO3 crystal. Tunable coherent radiation around 3 microm was produced by mixing a diode-pumped monolithic cw Nd-YAG laser and an injection-locked diode laser at 0.785 microm. High sensitivity N2O detection was demonstrated by observing pure absorption spectra of lines in the v1 + v3 combination band. We estimate a minimum detectable pressure of pure N2O of 1 x 10(-2) Pa with 0.9 m absorption path-length, corresponding to an absorbance of 3 x 10(-4). Nitrous oxide was also detected in presence of O2, N2 and air. Collisional broadening coefficients for the P(33) line at 3447.678 per cm are reported for N2O-N2 and N2O-O2 mixtures.
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Williams LS, Rotich J, Qi R, Fineberg N, Espay A, Bruno A, Fineberg SE, Tierney WR. Effects of admission hyperglycemia on mortality and costs in acute ischemic stroke. Neurology 2002; 59:67-71. [PMID: 12105309 DOI: 10.1212/wnl.59.1.67] [Citation(s) in RCA: 294] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Hyperglycemia at the time of acute ischemic stroke has been linked to worse outcome in both human and animal studies. OBJECTIVE To describe the prevalence and severity of hyperglycemia on hospital admission among acute ischemic stroke patients, to examine the independent relationship of admission hyperglycemia to all-cause mortality, and to document the inpatient management of hyperglycemia. METHODS Patients hospitalized with acute ischemic stroke at one hospital from July 1993 to June 1998 (n = 656) were identified. Demographic data, diagnoses, and blood glucose (BG) values were retrieved from the electronic medical record system. Admission stroke severity, fingerstick BG results, and new diabetes diagnoses were obtained by chart review. Hyperglycemia was defined as admitting random serum BG > or = 130 mg/dL. Hazard ratios (HR) for 30-day, 1-year, and 6-year mortality were calculated using multivariable Cox regression models. RESULTS Hyperglycemia at admission to hospital was present in 40% of patients with acute stroke. Patients with hyperglycemia were more often women and more likely to have prior diagnoses of diabetes and heart failure. Almost all of these patients remained hyperglycemic during their hospital stay (mean BG = 206 mg/dL), and 43% received no inpatient hypoglycemic drugs. Hyperglycemic patients had longer hospital stay (7 vs 6 days, p = 0.015) and higher inpatient hospital charges ($6,611 vs $5,262, p < 0.001). Hyperglycemia independently increased the risk for death at 30 days (HR 1.87, p < or = 0.01), 1 year (HR 1.75, p < or = 0.01), and 6 years after stroke (HR 1.41, p </= 0.01). CONCLUSIONS Admitting hyperglycemia was common among patients with acute ischemic stroke and was associated with increased short- and long-term mortality and with increased inpatient charges. Inpatient blood glucose management was suboptimal in this hospital. A trial of intensive treatment of hyperglycemia should be considered.
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Gatti S, Swierczynski G, Robinson F, Anselmi M, Corrales J, Moreira J, Montalvo G, Bruno A, Maserati R, Bisoffi Z, Scaglia M. Amebic infections due to the Entamoeba histolytica-Entamoeba dispar complex: a study of the incidence in a remote rural area of Ecuador. Am J Trop Med Hyg 2002; 67:123-7. [PMID: 12363056 DOI: 10.4269/ajtmh.2002.67.123] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
An epidemiologic field study was conducted in the village of Borbòn in Esmeraldas province in northern Ecuador to compare different parasitologic methods in the diagnosis of infection with the Entamoeba histolytica/Entamoeba dispar complex. The results of two stool antigen detection assays (the Prospect Entamoeba histolytica microplate assay and the E. histolytica II assay) were compared with isoenzyme characterization of the amebic isolates. Nearly all (176 of 178, 98.9%) subjects were positive for intestinal parasites on direct microscopic examination, and cysts and/or vegetative forms morphologically consistent with the E. histolytica/E. dispar complex were recorded in 48 of 178 cases (27%). Culture in Robinson's medium was positive for amebic stocks in 89 (50%) of the 178 samples tested. Of the 37 isolates successfully stabilized, cloned, and characterized by zymodeme analysis, seven (18.9%) showed isoenzyme patterns of E. histolytica, whereas 26 (70.3%) showed patterns of E. dispar. The remaining four strains were identified as Entamoeba coli (three isolates; 8.1%) and Dientamoeba fragilis (one strain; 2.7%).The immunochromatographic tests showed different degrees of sensitivity and specificity when compared with isoenzyme characterization as the reference technique. The microplate assay, which does not discriminate between E. histolytica and E.dispar, showed a sensitivity of 54.5% and a specificity of 94% for both these amebic species. In contrast, the second-generation E. histolytica II test had a sensitivity of 14.3% and a specificity of 98.4% for E. histolytica sensu stricto. Our survey clearly demonstrated that more specific and sensitive diagnostic tests, such as stool antigen detection assays and isoenzyme analysis, are needed to establish the actual worldwide distribution of E. histolytica and E. dispar.
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Carmo M, Colombo L, Bruno A, Corsi FRM, Roncoroni L, Cuttin MS, Radice F, Mussini E, Settembrini PG. Alteration of elastin, collagen and their cross-links in abdominal aortic aneurysms. Eur J Vasc Endovasc Surg 2002; 23:543-9. [PMID: 12093072 DOI: 10.1053/ejvs.2002.1620] [Citation(s) in RCA: 132] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
OBJECTIVES although the mechanism of arterial dilation and aneurysm development has not been clarified, the degradation of elastin and collagen plays undoubtedly a critical role. We evaluated the elastin and collagen content through the detection of their cross-links in aneurysmal and non-aneurysmal abdominal aortic walls. MATERIALS AND METHODS in 26 human abdominal aortic aneurysm specimens obtained during surgery and in 24 autopsy control samples of non-aneurysmal abdominal aorta the tissue content of elastin and collagen cross-links were measured by HPLC. Collagen was also detected by evaluating two characteristic amino acids, 4-hydroxyproline (4-hypro) with a colorimetric method and 5-hydroxylysine (5-hylys) by gas chromatography. RESULTS significantly fewer elastin cross-links were found in aneurysm samples compared to controls (desmosines and isodesmosines: 90% reduction; p<0.01). The opposite was true for pyridinoline collagen cross-links (350% increase) and deoxypyridinolines (100% increase, p=0.01). Tissue content of 5-hylys, 4-hypro and total amino acids were reduced significantly by 50% in aneurysmal samples. CONCLUSIONS beside confirming decreased elastin content in aneurysmal walls, these results show a concurrent increase of collagen cross-links. Since total collagen markers were decreased (decreased 4-hypro and 5-hylys) it is reasonable to suggest that in aneurysmal aortic walls old collagen accumulates cross-links while new collagen biosynthesis is somehow defective.
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Bruno G, Andreozzi P, Graf U, Tega F, Santangelo G, Barucco M, Bruno A, Bracchitta S. Cetirizine, a second-generation H1 antagonist, modulates Rantes and MCP-1 levels in allergic rhinitis. Int J Immunopathol Pharmacol 2002; 15:113-118. [PMID: 12590873 DOI: 10.1177/039463200201500206] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Chemokines and their receptors are involved in several allergic diseases. We measured RANTES and MCP-1 levels in sera of allergic rhinitis patients, and also we evaluated the effect of cetrizine, a second-generation H1 antagonist, on these chemoattractant proteins. 15 subjects were studied (10 males and 5 females; mean age: 26.7 years). They were suffering from perennial or seasonal allergic rhinitis induced by Dermatophagoides pteronyssinus (8 patients) or by grasses (7 patients). RANTES and MCP-1 serum levels were detected with an enzyme immunoassay before and after two weeks of treatment with 10 mg of cetirizine daily, and again after two weeks of washout. Baseline serum levels of RANTES and MCP-1 chemokines were significantly higher (p < 0.02 and p = 0.007, respectively) in allergic patients than in the healthy control group. Cetirizine resulted in a significant decrease in RANTES (p < 0.02) and MCP-1 (p = 0.003) versus baseline values. There is an increase in RANTES and MCP-1 in allergic rhinitis, which is counteracted by cetirizine.
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Grippaudo FR, Minasi P, Rocco M, Bruno A, Saracca E, Muratori L. Mammary implants: laboratory simulation of recreational diving conditions. BRITISH JOURNAL OF PLASTIC SURGERY 2002; 55:120-3. [PMID: 11987944 DOI: 10.1054/bjps.2001.3781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
To ascertain whether mammary implants are prone to changes in conformation or structure if they are submitted to recreational dives, eight mammary implants were submitted to 40 simulated dives to imitate an average recreational diving schedule. Matching implants were used as a control group. Photographs were taken before and after completion of the protocol. All implants were observed for changes in volume and checked for integrity. Variations in density were evaluated using a Tc scan. No changes in volume occurred after each dive. None of the implants showed ruptures, and Tc scanning failed to reveal any differences in density between tested and control implants. Cohesive-gel implants submitted to the simulated dives showed some morphological alterations. This study indicates that the mammary implants tested could be implanted in a sports diver, but raises concern about whether the increased exposure to stress could negatively affect their durability.
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Scaglia M, Gatti S, Bruno A, Bernuzzi AM, Cevini C, Maserati R. [Pathogenic protozoans in man: differential characterization of Entamoeba histolytica/Entamoeba dispar complex, Acanthamoeba spp., Microsporidia]. PARASSITOLOGIA 2001; 43 Suppl 1:37-43. [PMID: 12078476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
The review summarizes the results in the main parasitological topics of our Lab: amoebic infections due to Entamoeba histolytica/Entamoeba dispar complex and to Acanthamoeba spp. respectively, and human infections caused by microsporidia. Different rapid and advanced techniques have been included in the standardized diagnostic protocols for each topic, and a critical comparison among them was made, in order to define the gold standard diagnostic method: a) E. histolytica/E. dispar: in vitro culture, zymodeme typization, biomolecular identification (PCR), immunoenzymatic assay (ELISA) for direct detection in stools of specific surface antigenic lectins; b) Acanthamoeba spp.: in vitro culture, light and ultrastructural characterization, species identification by immunofluorescence method with monoclonal antibodies, in vitro pharmacological studies; c) Microsporidia: ultrastructural (TEM), biomolecular (PCR), biochemical and immunological (SDS-PAGE, Immunoblotting) studies for species identification, use of advanced ultrastructural techniques ("freeze-etching", "deep-etching") in order to deepen the spore wall structure, to study the cytoskeletal function of actin and to define the mode of infection, in vitro pharmacological assays on some inhibitors of chitin-synthases.
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McConnell JP, Cheryk LA, Durocher A, Bruno A, Bang NU, Fleck JD, Williams L, Biller J, Meschia JF. Urinary 11-dehydro-thromboxane B(2) and coagulation activation markers measured within 24 h of human acute ischemic stroke. Neurosci Lett 2001; 313:88-92. [PMID: 11684346 DOI: 10.1016/s0304-3940(01)02260-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The aim of this study was to determine the extent of change in platelet and coagulation markers in the acute phase of ischemic stroke and to assess the utility of marker measurement in stroke subtype classification. Urinary 11-dehydro-thromboxane B(2) (11-dTXB2), a marker of in vivo platelet activation, and markers of coagulation activation, including prothrombin fragment 1+2 (F1+2), thrombin-antithrombin complex (TAT), and fibrinogen, were measured in 25 patients with ischemic stroke within 24 h of onset of symptoms. Marker levels in patients with ischemic stroke were compared with those in 19 age-matched controls who had not taken aspirin for at least 2 weeks before sampling and 25 healthy controls. Median marker levels were significantly increased in stroke over those in age-matched controls for fibrinogen (344 vs. 289 mg/dl; P=0.030), F1+2 (1.40 vs. 0.80 nmol/l; P=0.003), and TAT (6.65 vs. 2.20 microg/l; P<0.0001). Median marker levels for seven patients with cardioembolic stroke and 18 with non-cardioembolic stroke were not significantly different for any marker test. Eight patients taking aspirin at the time of the stroke had significantly lower 11-dTXB2 values than patients not taking aspirin (964 vs. 4,314 pg/mg of creatinine; P=0.007). Stroke patients not taking aspirin had significantly higher 11-dTXB2 concentration than age-matched controls (4,314 vs. 1,788 pg/mg of creatinine; P=0.006). Coagulation and platelet activation markers are increased in the acute phase of stroke regardless of the clinical mechanism. This finding suggests that the markers may not be useful for predicting clinical subtype of ischemic stroke in the acute phase.
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Vignola AM, Chiappara G, Siena L, Bruno A, Gagliardo R, Merendino AM, Polla BS, Arrigo AP, Bonsignore G, Bousquet J, Chanez P. Proliferation and activation of bronchial epithelial cells in corticosteroid-dependent asthma. J Allergy Clin Immunol 2001; 108:738-46. [PMID: 11692098 DOI: 10.1067/mai.2001.119160] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Structural and functional characteristics of bronchial epithelial cells in corticosteroid-dependent asthma are unknown. OBJECTIVE In bronchial biopsy specimens from 16 control, 9 untreated asthmatic, 9 inhaled corticosteroid-treated asthmatic, and 19 corticosteroid-dependent asthmatic subjects, we evaluated epithelium morphology and patterns of cell apoptosis, proliferation, and activation. METHODS We used the terminal deoxynucleotidyl-mediated dUTP nick end labeling (TUNEL) technique to study apoptosis. Immunohistochemistry was used to evaluate the expression of molecules related to apoptosis (such as Bcl-2 and P53), cell proliferation (PCNA), and cell activation (NFkappaB and CD40/CD40-L). RESULTS Epithelium thickness was higher in corticosteroid-dependent asthmatic and control subjects than in inhaled corticosteroid-treated and untreated asthmatic subjects (P < .0001 and P <.0003). Very few TUNEL-positive epithelial cells were found in the 4 groups. Bcl-2 expression was higher in all groups of asthmatic subjects than in controls (P < .001). In corticosteroid-dependent asthmatic subjects, PCNA, NFkappaB, and CD40-L expression was higher than in inhaled corticosteroid-treated asthmatic (P < .001), untreated asthmatic (P <.001 and P < .04), and control (P < .01) subjects. CD40 expression was greater in corticosteroid-dependent asthmatic and untreated asthmatic subjects than in inhaled corticosteroid-treated asthmatic subjects (P < .0001 and P < .0006) and controls (P < .02 and P < .03). In corticosteroid-dependent asthma, PCNA expression was correlated with the epithelium thickness (P < .007). CONCLUSION This study shows that in bronchial epithelial cells of corticosteroid-dependent asthma, markers of cell survival and proliferation are coexpressed with markers of cell activation, suggesting that in this disease epithelium repair is associated with a persistent activation state of epithelial cells.
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Bruno A, Carter S, Qualls C. Clinical features of spontaneous intracerebral hemorrhage in Hispanics and non-Hispanic Whites in New Mexico: a community study. Ethn Dis 2001; 10:406-10. [PMID: 11110357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
OBJECTIVES To compare clinical features of spontaneous intracerebral hemorrhage (ICH) between Hispanics and non-Hispanic Whites in Albuquerque, New Mexico, occurring during the year 1993. DESIGN Analysis of data collected during a study of ICH incidence in a community. METHODS Review medical records with multiple relevant cerebrovascular diagnostic discharge codes in all 9 acute care hospitals in Albuquerque, and in the records of the State Medical Examiner. All suspected cases were verified by cerebral computed tomography or autopsy. Vascular risk factors, test results, and acute outcome were abstracted. RESULTS There were 38 Hispanics and 46 non-Hispanic Whites with ICH. We found no statistically significant differences between these two ethnic groups in the prevalence of hypertension or diabetes mellitus, in hematoma volume, in seasonal fluctuation of ICH incidence, or in acute mortality. However, based on our sample size, only large differences in the prevalence of risk factors between these two ethnic groups could be detected with statistical significance (>20-30 percentage points). There was a trend toward a higher proportion of subcortical ICH (centered in the basal ganglia, brainstem, or cerebellum) in Hispanics (82%) than in non-Hispanic Whites (62%, P=.09). CONCLUSIONS The higher proportion of subcortical ICH among the Hispanics suggests that chronic hypertension may play a greater role as a risk factor for ICH in this ethnic group than in non-Hispanic Whites in New Mexico. Our findings should be confirmed by larger community studies.
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Gonzales-Portillo F, McIntyre JA, Wagenknecht DR, Williams LS, Bruno A, Biller J. Spectrum of antiphospholipid antibodies (aPL) in patients with cerebrovascular disease. J Stroke Cerebrovasc Dis 2001; 10:222-6. [PMID: 17903828 DOI: 10.1053/jscd.2001.29818] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2001] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The association of stroke and antiphospholipid antibodies (aPL) other than anticardiolipin antibodies (aCL) is not well documented. OBJECTIVE To report the distribution of aCL, antiphosphatidylethanolamine (aPE), and antiphosphatidylserine (aPS) aPL among patients with symptomatic cerebrovascular disease evaluated by our Stroke Service at Indiana University Hospital from January 1997 to November 1999. METHODS We retrospectively reviewed medical records from 1997 to 1999 at Indiana University Hospital for all patients with symptomatic cerebrovascular disease using the International Statistical Classification of Diseases, 9th Revision, (ICD-9) codes. We identified patients with elevated titers of aPL. Sera from these patients were obtained within the first 30 days of the index event. We included only those patients for whom the serum samples were tested in a single laboratory by an in-house enzyme-linked immunosorbent assay (ELISA) for immunoglobulin G (IgG) immunoglobulin A (IgA) and immunoglobulin M (IgM) aCL, aPE, and aPS. We examined the clinical presentation, stroke risk factors, associated rheumatologic disorders, and distribution of aPL specificity and isotype. RESULTS Thirty-four of 185 patients, 26 women (76%), with a mean age of 46 years, and 8 men (24%) with a mean age of 46 years, had aPL. Nine patients had transient ischemic attacks (TIA), 25 suffered strokes, 23 had ischemic infarcts, and 2 had hemorrhagic infarcts (1 had a superior sagittal sinus thrombosis with bilateral hemispheric hemorrhagic infarcts, and one had bilateral hemorrhagic infarcts associated with systemic lupus erythematosus [SLE]). Six patients had SLE. The most common stroke risk factors were cigarette smoking (38%) and arterial hypertension (26%). Approximately two thirds (60%) of patients had a single positive aPL finding: aPE in 35%, aCL in 18%, and aPS in 6%. Multiple specificities were seen in 40%. IgA was the only aPL antibody isotype detected in 26% of the patients, IgG was the lone isotype in 24%, and IgM alone in 12%. Multiple aPL isotypes were detected in 38% of patients. Five patients (15%) presented with aPE IgA as the exclusive aPL. CONCLUSION In our series, aPE was the most frequent finding in stroke patients who were suspected to have an associated aPL syndrome. These specific types of aPL may be present relatively often in stroke patients and are often not assessed. Further studies are needed to determine how specific these aPL are in stroke versus other acute illnesses and versus healthy controls, and how these aPL are associated with stroke risk.
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Yilmaz EY, Pritz MB, Bruno A, Lopez-Yunez A, Biller J. Moyamoya: Indiana University Medical Center experience. ARCHIVES OF NEUROLOGY 2001; 58:1274-8. [PMID: 11493168 DOI: 10.1001/archneur.58.8.1274] [Citation(s) in RCA: 76] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
BACKGROUND Moyamoya usually presents with cerebral ischemia in children and intracranial hemorrhage in adults. Treatment remains controversial. DESIGN AND OBJECTIVE We reviewed our experience from June 1995 to August 1999 of 20 adult and pediatric angiographically diagnosed patients with moyamoya to report their clinical presentation, radiological findings, management, and clinical outcomes. RESULTS The mean age of patients at symptom onset was 17 years (range, 2-54 years). Patients were divided into 2 age groups (group 1, <18 years; group 2, > or =18 years). There were 13 patients in group 1 and 7 patients in group 2. Ischemic strokes or transient ischemic attacks were the predominant initial presentations in both groups. One patient in group 2 had an intraparenchymal brain hemorrhage. Five patients received medical treatment, and 15 had surgical revascularization. The mean time from symptom onset to surgical procedure was significantly longer for patients in group 1 than for those in group 2 (P =.03). The mean follow-up time was 36 months. One patient in group 1 had an ischemic stroke. There was no difference in stroke recurrence, mortality, or modified Rankin scale score among medically or surgically treated patients. CONCLUSIONS Moyamoya disease may have a different presentation and more benign natural history in our population than in Asian populations. Our findings emphasize the need to better understand the natural history of patients with moyamoya as well as the clinical benefit of different treatment modalities. Structured multicenter randomized clinical trials are needed to further assess the best treatment modalities for patients with moyamoya in the United States.
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Ronzoni S, Gaber S, Vetta F, Bruno A, Lupattelli MR, Di Massimo M, Fabbriconi P, Novi B, Bollea MR, Biagi A. Serum zinc levels in demented institutionalized patients. ARCHIVES OF GERONTOLOGY AND GERIATRICS. SUPPLEMENT 2001; 7:341-6. [PMID: 11431083 DOI: 10.1016/s0167-4943(01)00158-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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