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Cerello P, Bocchini L, Gobbato A, Attili A, Cutaia C, Ferrero V, Pontremoli C, Radici L, Stasi M, Visentin S. EP-1917: Measurements of reactive oxygen species production induced by gold nanoparticles in radiotherapy. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)33168-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Bocchini L, Gobbato A, Attili A, Cutaia C, Ferrero V, Pontremoli C, Radici L, Stasi, Visentin S, Cerello P. Measurements of Reactive Oxygen Species production induced by Gold Nanoparticles in Radiotherapy protocols. Radiother Oncol 2016. [DOI: 10.1016/s0167-8140(16)30046-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ferrero V, Allais G, Rolando S, Pozzo T, Allais R, Benedetto C. Endonasal mucosal contact points in chronic migraine. Neurol Sci 2015; 35 Suppl 1:83-7. [PMID: 24867843 DOI: 10.1007/s10072-014-1749-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Some anatomo-functional alterations of the nose may be considered as possible causes of headache: deviations of the nasal septum, abnormal turbinates, especially middle or superior, with consequent areas of mucosal contact with the septum. This study was performed on 100 subjects, 27 chronic migraine (CM) sufferers and 73 subjects who never suffered from migraine as control group. In the CM group, a direct endoscopic assessment was carried out in order to search for mucosal points of contact. Following the endoscopy, the patients underwent a computerized tomography (CT) in order to confirm the mucosal contact and for a better evaluation of its localization. The control group (C group) consisted of subjects who underwent a CT of the skull for various reasons. In CM group, a mucosal contact was highlighted in 14 patients (51.8 %); it was unilateral in 50 % of cases. In C group, the contact was present in 27 cases (36.9 %); in 81.5 % of them (n = 22), it was unilateral. A single site of contact was present in 6 (22 %) patients in CM group and 20 (27.3 %) patients in C group; more sites, in 8 (29.6 %) CM group patients and in 7 (9.5 %) patients of the C group. The connection between subjects and the number of single or multiple contacts in the two groups was statistically significant (p = 0.049). Furthermore, the frequency of the septum-middle turbinate was significantly (p = 0.0013) more frequent in CM sufferers (13/14) compared with control subjects (11/27). This study suggests, although with extremely early data, the need to select carefully patients for a possible surgical approach, using various parameters: in particular, the site of the mucosal contact, favoring the cases with multiple areas of contact, mainly between septum-middle turbinate and septum-superior turbinate.
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Straullu S, Forghieri F, Bosco G, Ferrero V, Gaudino R. Compatibility between coherent reflective burst-mode PON and TWDM-PON physical layers. OPTICS EXPRESS 2014; 22:9-14. [PMID: 24514959 DOI: 10.1364/oe.22.000009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We discuss the compatibility between reflective PON architectures and the recently defined ITU-T G.989.1 TWDM-PON. Focusing on the upstream, we experimentally demonstrate that, by using burst-mode coherent detection at OLT, reflective PON can achieve the specification target set for TWDM-PON, without requiring precise wavelength accuracy at ONU. Compared to the companion ECOC 2013 paper, we investigate on the differential optical path loss (DOPL) issue, proposing a simple SOA gain control algorithm to achieve reliable transmission for DOPL up to 17 dB.
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Costa J, Ferrero V, Loureiro J, Castro M, Navarro L, Castro S. Sexual reproduction of the pentaploid, short-styled Oxalis pes-caprae allows the production of viable offspring. PLANT BIOLOGY (STUTTGART, GERMANY) 2014; 16:208-14. [PMID: 23594049 DOI: 10.1111/plb.12010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2012] [Accepted: 12/31/2012] [Indexed: 05/13/2023]
Abstract
Reproduction is a key factor for the successful establishment and spread of introduced species. Oxalis pes-caprae is a tristylous species with a self- and morph-incompatibility sexual system that, in the invaded range of the western Mediterranean Basin, has been found to reproduce asexually because only the pentaploid, short-styled morph (5x S-morph) was introduced. The objective of this study was to test the ability of the 5x S-morph of O. pes-caprae to produce viable offspring in the absence of compatible mates, exploring the hypothesis that new morphs could have emerged by sexual reproduction events of the initially introduced morph. Pollen germination, pollen tube development, fruit and seed production, seed germination and offspring ploidy levels were analysed after controlled hand-pollinations to assess self- and morph-incompatibility and production of viable gametes by the 5x S-morph. The self-incompatibility system is still operating, but a partial breakdown in the morph-incompatibility system combined with the production of viable gametes was observed, allowing sexual reproduction of the 5x S-morph in the invaded range. The ability of the 5x S-morph to reproduce sexually may have major consequences for the dynamics of invasive populations of O. pes-caprae and could be one of the factors involved in the occurrence of new floral morphs in this invaded range.
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Sánchez JM, Ferrero V, Navarro L. Quantifying reciprocity in distylous and tristylous plant populations. PLANT BIOLOGY (STUTTGART, GERMANY) 2013; 15:616-620. [PMID: 23696971 DOI: 10.1111/j.1438-8677.2012.00720.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Reciprocal herkogamy (heterostyly) is an example of extreme relevance of accuracy of the location of the sexual organs within some floral systems. It involves the reciprocal positioning of anthers and stigmas in flowers of different plants within the same population, and the accuracy of this positioning is important to promote out-cross pollination, prevent self-interference, or both. Hence, several indices have been proposed to quantify reciprocity, most of them for populations with two different morphs (distylous). Here, we propose an extension of our index of reciprocity for distylous populations to be applied also to populations with three morphs (tristylous), allowing effective comparisons of reciprocity between tristylous, but also distylous populations. As for the distylous version, the index is based on comparison of the position of every single sexual organ in the sample with each and every organ of the opposite sex, for each of the three possible organ levels. Due to the massive amount of calculations required, a macro was developed that is available as Supplementary Information and at the website of the authors. The index and macro were tested on several hypothetical tristylous and distylous populations with predetermined mean and dispersion of sexual organs at each level, as well as on several actual tristylous and distylous populations. The index proposed is a solid tool for the study of reciprocity in distylous and tristylous populations. Comparisons between distylous and tristylous populations are easily performed and can be readily interpreted. The applicability of the index is facilitated through the software provided.
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Ribichini F, Tomai F, Pesarini G, Zivelonghi C, Rognoni A, De Luca G, Boccuzzi G, Presbitero P, Ferrero V, Ghini AS, Marino P, Vassanelli C, Ribichini F, Ferrero V, Pesarini G, Dal Dosso S, Vassanelli C, Tanguay JF, Tomai F, Presbitero P, Minelli M, Marino P, Anselmi M, Abukarsh R, Cima A, Ferrara A, Ferrero V, Menegatti G, Molinari G, Pesarini G, Ribichini F, Sparta D, Altamura L, Aurigemma C, Beraldi M, Corvo P, De Luca L, De Persio G, Ghini AS, Pastori F, Pellanda J, Petrolini A, Skossyreva O, Tomai. Ospedale F, Ospedale S, Bosco G, Boccuzzi G, Colangelo S, Garbo R, Minelli M, Noussan P, Belli G, Presbitero P, Rossi M, Soregaroli D, Zavalloni D, De Luca G, Franchi E, Leverone M, Rognoni A, Brunelleschi S, Feola M, Trinita OS, Menegatti G, Noussan P, Giovanni OS, Zanolla L, Magnani C. Long-term clinical follow-up of the multicentre, randomized study to test immunosuppressive therapy with oral prednisone for the prevention of restenosis after percutaneous coronary interventions: Cortisone plus BMS or DES veRsus BMS alone to EliminAte Restenosis (CEREA-DES). Eur Heart J 2013; 34:1740-8. [DOI: 10.1093/eurheartj/eht079] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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Straullu S, Forghieri F, Ferrero V, Gaudino R. Optimization of self-coherent reflective PON to achieve a new record 42 dB ODN power budget after 100 km at 1.25 Gbps. OPTICS EXPRESS 2012; 20:29590-29598. [PMID: 23388785 DOI: 10.1364/oe.20.029590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We demonstrate a greater than 42 dB optical distribution network power budget in the upstream of a 1.25 Gbps self-coherent reflective PON after 100 km of installed fibers, using off-the-shelf optoelectronic components, improving our previous result by 4 dB. We discuss all system optimizations introduced in the setup in order to reach such a result, including 8B/10B high-pass filtering and Faraday rotation at the ONU.
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Straullu S, Abrate S, Forghieri F, Rizzelli G, Ferrero V, Gaudino R. Characterization of uncooled RSOA for upstream transmission in WDM reflective PONs. OPTICS EXPRESS 2012; 20:B38-B44. [PMID: 23262877 DOI: 10.1364/oe.20.000b38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We investigate on the uncooled RSOA driving parameters in WDM reflective PONs, focusing on an upstream path at 1.25 Gbit/s using pure binary modulation. We show how the optimal values change using direct-detection or self-coherent receivers. In particular, for the latter, the driving point optimization allows a gain of more than 3 dB in terms of ODN loss compared to a standard On-Off Keying, generating a quasi-PSK modulation. We also address operating temperature and wavelength dependence issues.
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Ferrero V, Arroyo J, Castro S, Navarro L. Unusual heterostyly: style dimorphism and self-incompatibility are not tightly associated in Lithodora and Glandora (Boraginaceae). ANNALS OF BOTANY 2012; 109:655-65. [PMID: 21985797 PMCID: PMC3278292 DOI: 10.1093/aob/mcr222] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Accepted: 06/24/2011] [Indexed: 05/14/2023]
Abstract
BACKGROUND AND AIMS Heterostyly is a floral polymorphism characterized by the reciprocal position of stamens and stigmas in different flower morphs in a population. This reciprocal herkogamy is usually associated with an incompatibility system that prevents selfing and intra-morph fertilization, termed a heteromorphic incompatibility system. In different evolutionary models explaining heterostyly, it has been alternately argued that heteromorphic incompatibility either preceded or followed the evolution of reciprocal herkogamy. In some models, reciprocal herkogamy and incompatibility have been hypothesized to be linked together during the evolution of the heterostylous system. METHODS We examine the incompatibility systems in species with different stylar polymorphisms from the genera Lithodora and Glandora (Boraginaceae). We then test whether evolution towards reciprocal herkogamy is associated with the acquisition of incompatibility. To this end, a phylogeny of these genera and related species is reconstructed and the morphological and reproductive changes that occurred during the course of evolution are assessed. KEY RESULTS Both self-compatibility and self-incompatibility are found within the studied genera, along with different degrees of intra-morph compatibility. We report for the first time extensive variability among members of the genus Glandora and related species in terms of the presence or absence of intraspecies polymorphism and heteromorphic incompatibility. Overall, our results do not support a tight link between floral polymorphism and incompatibility systems. CONCLUSIONS The independent evolution of stylar polymorphism and incompatibility appears to have occurred in this group of plants. This refutes the canonical view that there is strong linkage between these reproductive traits.
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Ferrero V, Chapela I, Arroyo J, Navarro L. Reciprocal style polymorphisms are not easily categorised: the case of heterostyly in Lithodora and Glandora (Boraginaceae). PLANT BIOLOGY (STUTTGART, GERMANY) 2011; 13 Suppl 1:7-18. [PMID: 21134082 DOI: 10.1111/j.1438-8677.2009.00307.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Interest in reciprocal floral polymorphisms, such as heterostyly, has increased in recent decades because they can be used as suitable model systems to study mechanisms of outbreeding and disassortative mating in plants. Heterostylous plants are characterised by the presence of discrete morphs that differ in sex organ position and in some other ancillary traits. As regards sex organ deployment, different types of polymorphisms have been described, depending on number and type of discrete classes present in populations and degree of reciprocity between them. However, a clear-cut characterisation of stylar polymorphisms does not appear to be the best approach when there is great variability among populations because of continuous variation of some of traits examined. A recent study in Lithodora sensu lato (recently split into two separate genera, Lithodora and Glandora) showed a wide variation in sex organ position across species in the genus, which warrants precise population analysis of stylar polymorphism and its reciprocity. We provide a detailed morphometric analysis of flower sexual traits and include those considered to be ancillary characters. We report a wide variation in these traits in populations of Lithodora s.l. and highlight the subjectivity of the former characterisation of style polymorphism based on visual inspection. Ancillary traits appear repeatedly in Lithodora and Glandora, particularly in the latter. The appearance of these traits seems to be related to greater reciprocity between sexual whorls in Glandora, with the exception of G. prostrata. These results agree with evolutionary steps proposed in the build-up of heterostyly according to some evolutionary models. We also examined variation in polymorphisms in light of current models for evolution of heterostyly, and, more specifically, we sought to verify the prediction that flower traits as a whole (i.e., flower integration) respond to selective pressure to assure the exact location of pollen on the pollinator body. Most reciprocal populations and species, where between-morph pollen transfer is expected to be higher, would show greater integration. Our results confirm this hypothesis.
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Sánchez JM, Ferrero V, Arroyo J, Navarro L. Patterns of style polymorphism in five species of the South African genus Nivenia (Iridaceae). ANNALS OF BOTANY 2010; 106:321-31. [PMID: 20576739 PMCID: PMC2908166 DOI: 10.1093/aob/mcq111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2010] [Revised: 04/08/2010] [Accepted: 04/20/2010] [Indexed: 05/23/2023]
Abstract
BACKGROUND AND AIMS Heterostylous plants have been characterized by the presence of two or three discrete morphs that differ in their sex organ position within populations. This polymorphism is widely distributed among the angiosperms, but detailed studies are limited to few taxonomic groups. Although a small representation, evolutionary meaningful variations of the heterostylous syndrome have been reported when precise measurements of the sexual whorls were taken. A thorough exploration of groups where heterostyly has been reported should offer new opportunities to further testing the evolutionary hypotheses explaining heterostyly. Here, the traits defining heterostyly were explored in half of the species in Nivenia, the only genus of Iridiaceae where heterostyly has been reported. METHODS Detailed morphometric analysis of the flower sexual whorls and some traits considered as ancillary are supplied to determine for each population (a) the kind of stylar polymorphism, (b) the morph ratio and (c) the degree of reciprocity between sexual whorls. Also the rates of assortative (within morph) versus disassortative (between morphs) pollen transfer were estimated by analysing pollen loads on stigmas. The association between floral phenotypic integration and the reciprocity between sexual whorls was estimated; both characteristics have been quoted as dependent on the accuracy of the fit between pollinators and flowers and therefore related to the efficiency of pollen transfer. KEY RESULTS Different types of polymorphism, differing in their degree of reciprocity, were found in Nivenia. Effective disassortative mating appears to be common, since (a) all dimorphic populations show equal morph-ratios (isoplethy), and (b) the pollen placed on the stigmas of each morph is likely to be coming from the other (complementary) morph. The most reciprocal populations of the heterostylous species have also the highest values of phenotypical integration. CONCLUSIONS Stigma height dimorphism, as opposed to distyly, is proven for the first time in Nivenia. The presence of different types of polymorphism within the genus is consistent with hypotheses of the evolution of heterostyly. The role of the pollinators as the leading force of the transition seems to be apparent, since floral integration is related to reciprocity.
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Amoruso A, Gunella G, Rondano E, Bardelli C, Fresu LG, Ferrero V, Ribichini F, Vassanelli C, Brunelleschi S. Tobacco smoke affects expression of peroxisome proliferator-activated receptor-gamma in monocyte/macrophages of patients with coronary heart disease. Br J Pharmacol 2009; 158:1276-84. [PMID: 19814730 PMCID: PMC2782336 DOI: 10.1111/j.1476-5381.2009.00442.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 04/20/2009] [Accepted: 05/25/2009] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND AND PURPOSE Tobacco smoke represents a relevant risk factor for coronary heart disease (CHD). Although peroxisome proliferator-activated receptor (PPAR)gamma activation reduces inflammation and atherosclerosis, expression of PPARgamma in cells and its modulation by smoking are poorly investigated. We previously reported that monocyte/macrophages from healthy smokers exhibited an enhanced constitutive expression of PPARgamma. Here, we evaluated PPARgamma expression and basal cytokine release in monocytes and monocyte-derived macrophages (MDMs) from 85 CHD patients, classified by their smoking habit (smokers, non-smokers and ex-smokers), and assessed the role of PPARgamma ligands in this context. EXPERIMENTAL APPROACH PPARgamma protein was detected by Western blot and semi-quantified by PPARgamma/beta-actin ratio; cytokine release was measured by elisa and nuclear factor-kappaB (NF-kappaB) translocation by electrophoretic mobility shift assays. KEY RESULTS As compared to the other groups, MDMs from smoker CHD patients exhibited a reduced PPARgamma/beta-actin ratio and an increased spontaneous release of tumour necrosis factor-alpha (TNF-alpha) and interleukin-6, but with no major variations in monocytes. In cells from selected CHD patients, rosiglitazone inhibited TNF-alpha release and NF-kappaB translocation induced by phorbol-12-myristate 13-acetate. The selective PPARgamma antagonist GW9662 reversed these effects, with some variations related to smoking habit. CONCLUSIONS AND IMPLICATIONS In CHD patients, exposure to tobacco smoke profoundly affected PPARgamma expression, and this was related to levels of secretion of pro-inflammatory cytokines. MDMs from CHD smokers showed the lowest PPARgamma expression and released more inflammatory cytokines. Moreover, rosiglitazone's ability to inhibit cytokine release and its reversal by GW9662 clearly indicated PPARgamma involvement in these changes in CHD patients.
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Ferrero V, Camatel S. Optical Phase locking techniques: an overview and a novel method based on single side sub-carrier modulation. OPTICS EXPRESS 2008; 16:818-828. [PMID: 18542156 DOI: 10.1364/oe.16.000818] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A short overview on Optical Phase locking techniques and a detailed description of the Phase Locking technique based on Sub-Carriers modulation is presented. Furthermore, a novel Single Side Sub-Carrier-based Optical Phase Locked Loop (SS-SC-OPLL), with off the shelf optical components, is also presented and experimentally demonstrated. Our new method, based on continuous wave semiconductor lasers and optical single side sub-carrier modulation using QPSK LiNbO(3) modulator, allows a practical implementation with better performance with respect to the previously proposed OPLL circuits, and permits an easy use in real time WDM signal coherent demodulation.
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Albera R, Ferrero V, Canale A, De Siena L, Pallavicino F, Poli L. Cochlear blood flow modifications induced by anaesthetic drugs in middle ear surgery: comparison between sevoflurane and propofol. Acta Otolaryngol 2003; 123:812-6. [PMID: 14575396 DOI: 10.1080/00016480310002230] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
OBJECTIVE Because it is necessary to maintain controlled hypotension during middle ear surgery in order to avoid bleeding and as it is known that cochlear blood flow (CBF) is related to blood pressure (BP), it is useful to evaluate CBF modifications induced by anaesthetics in order to prevent cochlear damage. The aim of this paper is to evaluate, using laser Doppler flowmetry, which anaesthetic drug, out of sevoflurane and propofol, has the smallest effect on CBF. MATERIAL AND METHODS Twenty consenting adult patients scheduled for myringoplasty under general anaesthesia for simple tympanic membrane perforation were studied. Patients were divided into two groups: the first group was treated with sevoflurane and the second with propofol. For the first group, CBF measurement was carried out on three different occasions: (i) at a basal low drug dosage; (ii) having increased the drug dosage to a higher level; and (iii) having reduced the drug dosage to the basal low level again. For the second group, CBF measurement was carried out on three different occasions: (i) 10 min after injecting a bolus of propofol; (ii) immediately after a second propofol injection; and (iii) 10 min after a third injection of propofol. A probe was placed over the promontory in order to measure CBF levels. RESULTS In the subjects treated with sevoflurane, after having increased the drug dosage, BP decreased significantly while CBF did not change significantly. In the subjects treated with propofol we recorded a significant reduction in BP, as well as a decrease in CBF. CONCLUSION The results obtained show that sevoflurane has a hypotensive effect without modifying CBF, while propofol, although having a similar effect on BP to sevoflurane, has less of a protective effect on inner ear microcirculation.
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Wardeh AJ, Albiero R, Kay IP, Knook AHM, Wijns W, Kozuma K, Nishida T, Ferrero V, Levendag PC, van Der Giessen WJ, Colombo A, Serruys PW. Angiographical follow-up after radioactive "Cold Ends" stent implantation: a multicenter trial. Circulation 2002; 105:550-3. [PMID: 11827917 DOI: 10.1161/hc0502.104539] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Radioactive stents with an activity of 0.75 to 12 microCi have shown >40% edge restenosis due to neointimal hyperplasia and negative remodeling. This trial evaluated whether radioactive Cold Ends stents might resolve edge restenosis by preventing remodeling at the injured extremities. METHODS AND RESULTS The 25-mm long (15-mm radioactive center and 5-mm nonradioactive ends) Cold Ends stents had an activity of 3 to 12 microCi at implantation. Forty-three stents were implanted in 43 patients with de novo native coronary artery disease. Two procedural, 1 subacute, and 1 late stent thrombosis occurred. A restenosis rate of 22% was observed with a shift of the restenosis, usually occurring at the stent edges of radioactive stents, into the Cold Ends stents. The most severe restenosis occurred at the transition zone from radioactive to nonradioactive segments, a region located in dose fall-off. CONCLUSION Cold Ends stents did not resolve edge restenosis.
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Ferrero V. Six-month effects of the hormone replacement therapy on arterial wave reflection, blood pressure and plasma level of angiotensin-I converting enzyme in postmenopausal healthy women. Am J Hypertens 2001. [DOI: 10.1016/s0895-7061(01)02038-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Albera R, Giordano L, Rosso P, Canale A, Cavalot AL, Di Girolamo S, Ferrero V. Surgery of otosclerosis in the elderly. AGING (MILAN, ITALY) 2001; 13:8-10. [PMID: 11292155 DOI: 10.1007/bf03351487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Auditory results following stapes surgery in 26 patients with otosclerosis >60 years of age at the time of surgery were compared with those obtained in 140 patients <60 years undergoing stapes surgery during the same time period. Stapedotomy was performed in all cases. The mean follow-up period was 29 months. Hearing results as judged by postoperative air-bone gaps were as good in the older age group as in the younger patients. Moreover, complications of surgery, such as postoperative formation of perilymphatic fistula, did not occur more frequently in elderly vs younger patients. On the basis of the results obtained, it is concluded that stapes surgery should be offered to elderly patients with the same indications as younger patients with otosclerosis.
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Cavalot AL, Gervasio CF, Nazionale G, Albera R, Bussi M, Staffieri A, Ferrero V, Cortesina G. Pharyngocutaneous fistula as a complication of total laryngectomy: review of the literature and analysis of case records. Otolaryngol Head Neck Surg 2000; 123:587-92. [PMID: 11077346 DOI: 10.1067/mhn.2000.110617] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Pharyngocutaneous fistula is the most common complication of total laryngectomy. The management of this problem increases hospitalization time and delays initiation of postoperative radiotherapy, where indicated. To identify factors predisposing to the development of pharyngocutaneous fistula, we reviewed the postoperative courses of 293 patients who underwent total laryngectomy at our clinic. General factors taken into account were concurrent diseases such as diabetes, liver diseases, or chronic anemia; local factors included radiotherapy before and after surgery, preoperative tracheostomy, type of cervical lymph node removal, and method of pharyngeal closure. We then compared our data with those reported in the literature by other authors. Last, we applied the Fisher exact test to a correlation we found between the higher incidence of fistula in patients with diabetes, liver diseases, or anemia. The local factor that turned out to be statistically most significant for the development of fistula was preoperative radiotherapy.
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Bussi M, Ferrero V, Riontino E, Gasparri G, Camandona M, Cortesina G. Problems in reconstructive surgery in the treatment of carcinoma of the hypopharyngoesophageal junction. J Surg Oncol 2000. [PMID: 10914822 DOI: 10.1002/1096-9098(200006)74:2<130::aid-jso9>3.0.co;2-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND OBJECTIVES Thirty percent of carcinomas of the pyriform sinus manifest generally with infiltrations in the cervical esophagus. In recent years, progress in reconstructive surgery has broadened surgical indications to include tumors previously managed with palliative measures alone. In some cases, radical surgery has been extended to creating safer resection margins, with more and more indications for circular pharyngectomy. Lesions involving the hypopharyngoesophageal junction pose particular problems; furthermore, the high rate of synchronous or metachronous tumors warrants the indication for total esophagectomy, which requires complex reconstructive techniques. METHODS We report on a series of 21 patients who underwent pharyngocoloplasties after receiving total pharyngolaryngoesophagectomy. RESULTS With regard to the oncologic results, after a follow-up of 2-60 months, 9 patients had no evidence of disease, 5 patients died during the postoperative course, 2 patients survived with disease, 4 died with disease, 1 died from metachronous breast carcinoma, and 7 underwent reintervention. CONCLUSIONS In cases in which reconstruction by gastric pull-up is considered risky, if not contraindicated, pharyngocoloplasty represents a particularly reliable treatment option. The limits and advantages of the technique are discussed. The procedure permitted us to reconstruct the digestive tract, without encountering problems any more serious than those a normal gastric pull-up procedure would pose.
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Bussi M, Ferrero V, Riontino E, Gasparri G, Camandona M, Cortesina G. Problems in reconstructive surgery in the treatment of carcinoma of the hypopharyngoesophageal junction. J Surg Oncol 2000; 74:130-3. [PMID: 10914822 DOI: 10.1002/1096-9098(200006)74:2<130::aid-jso9>3.0.co;2-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
BACKGROUND AND OBJECTIVES Thirty percent of carcinomas of the pyriform sinus manifest generally with infiltrations in the cervical esophagus. In recent years, progress in reconstructive surgery has broadened surgical indications to include tumors previously managed with palliative measures alone. In some cases, radical surgery has been extended to creating safer resection margins, with more and more indications for circular pharyngectomy. Lesions involving the hypopharyngoesophageal junction pose particular problems; furthermore, the high rate of synchronous or metachronous tumors warrants the indication for total esophagectomy, which requires complex reconstructive techniques. METHODS We report on a series of 21 patients who underwent pharyngocoloplasties after receiving total pharyngolaryngoesophagectomy. RESULTS With regard to the oncologic results, after a follow-up of 2-60 months, 9 patients had no evidence of disease, 5 patients died during the postoperative course, 2 patients survived with disease, 4 died with disease, 1 died from metachronous breast carcinoma, and 7 underwent reintervention. CONCLUSIONS In cases in which reconstruction by gastric pull-up is considered risky, if not contraindicated, pharyngocoloplasty represents a particularly reliable treatment option. The limits and advantages of the technique are discussed. The procedure permitted us to reconstruct the digestive tract, without encountering problems any more serious than those a normal gastric pull-up procedure would pose.
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Ferrero V. Role of conventional risk factors and the A/C polymorphism of the angiotensin-II type 1 receptor gene in post-menopausal women treated with coronary stenting. Am J Hypertens 2000. [DOI: 10.1016/s0895-7061(00)00828-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Ferrero V, Bussi M, Giordano L, Cavalot AL, Albera R. [Functional results in the reconstruction of the ossicular chain in partial or total atrophy of the incus. Comparison between reconstruction using a moulded incus and hydroxyapatite PORP]. ACTA OTORHINOLARYNGOLOGICA ITALICA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI OTORINOLARINGOLOGIA E CHIRURGIA CERVICO-FACCIALE 2000; 20:159-64. [PMID: 11139873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Ossicular chain defects modifying sound transmission through the middle ear can be treated with (re)implantation of remodeled autologous o homologous ossicles. In recent years, thanks to improved biocompatibility of the materials on the market, prostheses have been increasingly used in the partial or total ossicular chain reconstruction. The present study evaluates auditory ossicle reconstruction as a result of partial or total atrophy of the incus, comparing the use of the remodeled autologous incus with the use of partial hydroxyapatite prostheses (PORP). The study involved 79 patients of which 59 (74.7%) underwent ossicular chain reconstruction using a remodeled, inverted autologous incus while in the remaining 20 cases (25.3%) a hydroxyapatite prosthesis (PORP) was used. The effectiveness of the ossicular chain was evaluated by comparing pre- and postoperative audiometry and evaluating the average thresholds at frequencies of 0.5, 1, 2 and 3 KHz. The average preoperative audiometric gap (understood as the relationship between the air-bone gap) was 23 dB (Standard Deviation 11.2) while postoperatively it was 11 dB (SD 8.5) (p < 0.0001). Therefore the improvement in the air-bone gap was 12 dB (SD 11) for the overall population: 13 dB (SD 10) in those cases where reconstruction was performed using a remodeled incus and 8 dB (SD 11) when PORP was used. The postoperative cumulative gap between the air and bone pathways fell between 0 and 20 dB in 84% of the total population: 89% of those reconstructed with a remodeled incus and 73% of those using PORP. The middle ear ossicular chain reconstruction was performed using remodeled, inverted autologous incus in those cases where ossicular damage did not compromise its use while prostheses made of a biocompatible material (hydroxyapatite PORP) were reserved for those cases where the incus was absent or severely worn. The results obtained are satisfactory, remained stable in time and reflect the average values reported in the Literature.
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Russo P, Steffenino G, Dellavalle A, Ribichini F, Ferrero V, Vado A, Uslenghi E. Angiographic follow-up after coronary implantation of the Multilink stent: a prospective observation. ITALIAN HEART JOURNAL : OFFICIAL JOURNAL OF THE ITALIAN FEDERATION OF CARDIOLOGY 2000; 1:117-21. [PMID: 10730611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
BACKGROUND A growing variety of coronary stents is becoming available on the market. Results of randomized trials may be difficult to apply to less selected patients, and experience with every device cannot be obtained in every center. Detailed information about the immediate and long-term results achieved with one device can be a helpful reference for interventional cardiologists. The aim of this study was to test the applicability and the clinical and angiographic results, both immediate and at 6 months, of the Multilink coronary stent in a cohort of unselected patients undergoing coronary angioplasty. METHODS From March 1997 to June 1998 coronary angioplasty was performed in 391 patients in our center, with the use of stents in 339 patients. RESULTS Three hundred and seventeen Multilink stents were successfully implanted in 295 lesions in 277 patients; an acute coronary syndrome was present in 209 cases (75%), and lesion types B2 and C accounted for 30% of lesions. In 7 cases (2.4%) the Multilink stent did not cross the lesion, and another device was implanted. Subacute stent occlusion occurred in 1 patient (0.36%) after primary angioplasty. After 6 months from the procedure, clinical follow-up data were available for 252 out of 254 patients: none had died, and angina or myocardial ischemia occurred in 25 patients (9.9%). A control angiogram was performed in 239 out of 254 patients (94%) at 178 +/- 34 days. Restenosis occurred in 44/239 patients (18.4%) and in 48/247 lesions (19.4%). In patients with vs without restenosis the original lesion was longer (p = 0.009), and diabetes mellitus was more frequent (p = 0.002), as was the use of multiple stents (p = 0.005). In single 15, 25 and 35 mm long stents restenosis occurred in 13.9, 15.5 and 46.2% of cases, respectively (p = NS). CONCLUSIONS The Multilink stent showed a low rate of subacute occlusion (0.36%) and could be used safely also in patients with acute coronary syndromes. The use of a single, 15 or 25 mm long Multilink stent was associated with a low angiographic recurrence rate (14-16%).
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Ribichini F, Pugno F, Ferrero V, Bussolati G, Melissano G, Chiesa R, Di Mario C, Colombo A. Angiotensin-converting enzyme tissue activity in the diffuse in-stent restenotic plaque. Circulation 2000; 101:E33-5. [PMID: 10637219 DOI: 10.1161/01.cir.101.2.e33] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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