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Sampogna F, Raskovic D, Guerra L, Pedicelli C, Tabolli S, Leoni L, Alessandroni L, Abeni D. Identification of categories at risk for high quality of life impairment in patients with vitiligo. Br J Dermatol 2008; 159:351-9. [DOI: 10.1111/j.1365-2133.2008.08678.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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77
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Favia M, Guerra L, Riccardi S, Fanelli T, Cardone R, Reshkin S, Conese M, Casavola V. EZRIN PHOSPHORYLATION AND ACTIVATION OF RHOA PLAY A ROLE IN THE RESCUE OF ΔF508CFTR IN CFBE41O– CELLS BY NHERF1. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60539-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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78
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Conese M, Rejman J, Piro D, Piccoli C, Guerra L, Lepore S, Maffione A, D'Aprile A, Favia M, Copreni E, Capitanio N, Casavola V. HOMING TO THE LUNG, MITOCHONDRIAL CONTENT AND CFTR EXPRESSION IN HEMATOPOIETIC STEM CELLS. J Cyst Fibros 2008. [DOI: 10.1016/s1569-1993(08)60530-5] [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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79
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Belardinelli M, Guerra L, Gambellini G, Maroli M, Mazzini M, Fausto AM. Immunolocalization of a lipase-like protein in the reproductive apparatus of female Phlebotomus papatasi, at various stages of the gonotrophic cycle. ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 2008; 101:611-9. [PMID: 17877880 DOI: 10.1179/136485907x193879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
In female phlebotomine sandflies, little is known about the reproductive accessory glands that presumably contribute to egg production and/or oviposition. The main protein secreted in the accessory glands of female Phlebotomus papatasi was recently characterised as a lipase-like protein, the first to be found in the female accessory glands of any insect. This protein, named PhpaLIP (for Phlebotomus papatasi lipase), has now been detected and localized in the reproductive tissues of female P. papatasi, at different stages of the gonotrophic cycle, using a polyclonal anti-PhpaLIP serum and both confocal scanning laser and immuno-electron microscopy. PhpaLIP appears to be always present in the accessory glands (with a secretory peak shortly before oviposition) but was also detected in the follicle cells of the ovarioles, within the developing vitelline envelope, and in the oviducts. The results are discussed in relation to the functions that PhpaLIP could have during the gonotrophic cycle, in the various reproductive structures of female P. papatasi.
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Dopico-García M, Valentão P, Jagodziñska A, Klepczyñska J, Guerra L, Andrade P, Seabra R. Solid-phase extraction versus matrix solid-phase dispersion: Application to white grapes. Talanta 2007; 74:20-31. [DOI: 10.1016/j.talanta.2007.05.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2006] [Revised: 05/11/2007] [Accepted: 05/18/2007] [Indexed: 10/23/2022]
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81
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Compalati E, Guerra L, Rogkakou A, Zanella C, Scordamaglia A, Passalacqua G. Angioedema after administration of methylprednisolone to treat drug allergy. Allergy 2007; 62:1346-8. [PMID: 17919150 DOI: 10.1111/j.1398-9995.2007.01481.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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82
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MacNeily AL, Leonard MP, Metcalfe PD, Casale A, Guerra L, Steinbok P, Garton H. Development of an Objective Score to Quantify the Pediatric Cystometrogram. J Urol 2007; 178:1752-6; discussion 1756-7. [PMID: 17707434 DOI: 10.1016/j.juro.2007.03.157] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2006] [Indexed: 11/25/2022]
Abstract
PURPOSE We developed a reliable tool for quantitative assessment of the pediatric cystometrogram. MATERIALS AND METHODS Scores for expected capacity (EV), compliance (EV20), activity and sensation were developed according to established formulas for norms. Ordinal scores were derived by calculating observed over expected findings. Based on the derived percents scores of 1 to 5 were assigned. For EV--0 to 5 the formula used was EV = (age + 2) x 30 and for EV20--0 to 5 the formula used was EV20 = 17 x age + 55. Activity was determined as the volume of the first, total number and magnitude of involuntary contractions, each scored 0 to 5 and divided by 3. Sensation was scored as 0 to 3 according to volume at first sensation. A total of 87 blinded cystometrograms in 49 patients were independently scored twice by 3 pediatric urologists. The resultant 522 total and 2,088 component scores were assessed for reliability. RESULTS Intrarater reliability was strong with 80% of total scores (208 of 261) within +/- 1 point from initial to subsequent retest. Reliability component scores were stronger with 94% (983 of 1,044) within +/- 1 point from test to retest. Spearman's rank correlations for total score was 0.82 to 0.98, indicating a strong relationship between test and retest. Interrater reliability of components was strong with 89% of scores (1,851 of 2,088) between urologists within +/- 1 point. Correlation coefficients for total scores were 0.80 to 0.96, indicating a high degree of consistency between urologist assessments (p <0.05). CONCLUSIONS This score appears to reliably quantify the pediatric cystometrogram. Its application may be useful for the objective assessment of detrusor behavior before and after intervention. Further applications should allow refinement of this tool.
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83
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Keays M, Guerra L, Mihill J, Raju G, Al-Asheeri N, Geier P, Gaboury I, Matzinger M, Pike J, Leonard M. MP-02.02: Reliability and validity assessment of society for fetal urology ultrasound grading system for hydronephrosis. Urology 2007. [DOI: 10.1016/j.urology.2007.06.185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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84
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Rogkakou A, Guerra L, Scordamaglia A, Canonica GW, Passalacqua G. Severe skin reaction due to excipients of an oral iron treatment. Allergy 2007; 62:334-5. [PMID: 17298354 DOI: 10.1111/j.1398-9995.2006.01287.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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85
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Dopico-García MS, Valentão P, Guerra L, Andrade PB, Seabra RM. Experimental design for extraction and quantification of phenolic compounds and organic acids in white “Vinho Verde” grapes. Anal Chim Acta 2007; 583:15-22. [PMID: 17386521 DOI: 10.1016/j.aca.2006.09.056] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2006] [Revised: 09/25/2006] [Accepted: 09/29/2006] [Indexed: 11/18/2022]
Abstract
An experimental design was applied for the optimization of extraction and clean-up processes of phenolic compounds and organic acids from white "Vinho Verde" grapes. The developed analytical method consisted in two steps: first a solid-liquid extraction of both phenolic compounds and organic acids and then a clean-up step using solid-phase extraction (SPE). Afterwards, phenolic compounds and organic acids were determined by high-performance liquid chromatography (HPLC) coupled to a diode array detector (DAD) and HPLC-UV, respectively. Plackett-Burman design was carried out to select the significant experimental parameters affecting both the extraction and the clean-up steps. The identified and quantified phenolic compounds were: quercetin-3-O-glucoside, quercetin-3-O-rutinoside, kaempferol-3-O-rutinoside, isorhamnetin-3-O-glucoside, quercetin, kaempferol and epicatechin. The determined organic acids were oxalic, citric, tartaric, malic, shikimic and fumaric acids. The obtained results showed that the most important variables were the temperature (40 degrees C) and the solvent (acid water at pH 2 with 5% methanol) for the extraction step and the type of sorbent (C18 non end-capped) for the clean-up step.
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Favia M, Fanelli T, Bagorda A, Di Sole F, Reshkin SJ, Suh PG, Guerra L, Casavola V. NHE3 inhibits PKA-dependent functional expression of CFTR by NHERF2 PDZ interactions. Biochem Biophys Res Commun 2006; 347:452-9. [PMID: 16824484 DOI: 10.1016/j.bbrc.2006.06.112] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2006] [Accepted: 06/20/2006] [Indexed: 11/30/2022]
Abstract
It has been shown that when CFTR and NHE3 are co-expressed on the apical membrane of the A6-NHE3 cell monolayers, the two transporters interact via a shared regulatory complex composed of NHERF2, ezrin, and PKA. We observe here that co-expression of NHE3 reduced both PKA-dependent apical CFTR expression and its activation once in place by approximately 50%. To analyze the role of NHERF2 in this process, we transfected NHE3 expressing and non-expressing A6 monolayers with NHERF2 cDNA in which its binding domains had been deleted. When only CFTR is expressed on the apical membrane, deletion of any of the NHERF2 binding domains inhibited both PKA-dependent apical CFTR expression and its activation, while when NHE3 was co-expressed with CFTR PDZ2 deletion was without effect on CFTR sorting and activity. This suggests that when the PDZ2 domain is "sequestered" by interacting with NHE3 it can no longer participate in CFTR functional expression.
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87
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Tosti A, Fanti PA, Guerra L, Pelluso AM, Bardazzi F. Immediate contact dermatitis in food handlers. Contact Dermatitis 2006. [DOI: 10.1111/j.1600-0536.1990.tb05106.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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88
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Belardinelli M, Fausto AM, Guerra L, Buonocore F, Bongiorno G, Maroli M, Mazzini M. Lipase and antibacterial activities of a recombinant protein from the accessory glands of female Phlebotomus papatasi (Diptera: Psychodidae). ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 2006; 99:673-82. [PMID: 16212801 DOI: 10.1179/136485905x51472] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The reproductive accessory glands of the adult female have a functional versatility in insects, contributing to reproduction in various ways. The major protein secreted by the accessory glands of female Phlebotomus papatasi (Diptera, Psychodidae) has already been characterised and named PhpaLIP (for P. papatasi lipase) because, in terms of its amino-acid sequence, it is very similar to a wide range of vertebrate lipases. The gene coding for PhpaLIP has now been cloned into a pQE30 vector and expressed in Escherichia coli. When the recombinant PhpaLIP was tested in vitro, it was found to have not only lipase-like activity (when p-nitrophenyl caprylate was used as the substrate) but also specific antibacterial activity against some Gram-positive and Gram-negative bacteria. The possible physiological roles of PhpaLIP in P. papatasi are discussed, in the light of these results.
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Curtò N, Tremolizzo L, Mattavelli L, Piatti ML, Marzorati L, Guerra L, Grassi MG, Ferrarese C. A case of Melas (A3243G) on chronic dichloroacetate treatment. Eur Neurol 2006; 55:37-8. [PMID: 16479117 DOI: 10.1159/000091424] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2005] [Accepted: 10/12/2005] [Indexed: 11/19/2022]
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90
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Rogkakou A, Guerra L, Massacane P, Baiardini I, Baena-Cagnani R, Zanella C, Canonica GW, Passalacqua G. Effects on symptoms and quality of life of hypertonic saline nasal spray added to antihistamine in persistent allergic rhinitis--a randomized controlled study. Eur Ann Allergy Clin Immunol 2005; 37:353-6. [PMID: 16453969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
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91
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Passalacqua G, Lombardi C, Guerra L, Compalati E, Fumagalli F, Canonica GW. Sublingual immunotherapy: no more doubts. Eur Ann Allergy Clin Immunol 2005; 37:314-20. [PMID: 17066650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
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92
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Guerra L, Favia M, Fanelli T, Calamita G, Svetlo M, Bagorda A, Jacobson KA, Reshkin SJ, Casavola V. Stimulation of Xenopus P2Y1 receptor activates CFTR in A6 cells. Pflugers Arch 2005; 449:66-75. [PMID: 15235914 DOI: 10.1007/s00424-004-1293-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Nucleotide binding to purinergic P2Y receptors contributes to the regulation of a variety of physiological functions in renal epithelial cells. Here, we investigate the regulatory mechanism of the P2Y1 receptor agonist 2-methylthioadenosine diphosphate (2-MeSADP) on Cl- transport in A6 cells, a commonly used model of the distal section of the Xenopus laevis nephron. Protein and mRNA expression analysis together with functional measurements demonstrated the basolateral location of the Xenopus P2Y1 receptor. 2-MeSADP increased intracellular [Ca2+] and cAMP and Cl- efflux, responses that were all inhibited by the specific P2Y1 receptor antagonist MRS 2179. Cl- efflux was also inhibited by the cystic fibrosis transmembrane conductance regulator (CFTR) blocker glibenclamide. Inhibition of either protein kinase A (PKA) or the binding between A-kinase-anchoring proteins (AKAPs) and the regulatory PKA RII subunit blocked the 2-MeSADP-induced activation of CFTR, suggesting that PKA mediates P2Y1 receptor regulation of CFTR through one or more AKAPs. Further, the truncation of the PDZ1 domain of the scaffolding protein Na+/H+ exchanger regulatory factor-2 (NHERF-2) inhibited 2-MeSADP-dependent stimulation of Cl- efflux, suggesting the involvement of this scaffolding protein. Activation or inhibition of PKC had no effect per se on basal Cl- efflux but potentiated or reduced the 2-MeSADP-dependent stimulation of Cl- efflux, respectively. These data suggest that the X laevis P2Y1 receptor in A6 cells can increase both cAMP/PKA and Ca2+/PKC intracellular levels and that the PKC pathway is involved in CFTR activation via potentiation of the PKA pathway.
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93
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Baiardini I, Pasquali M, Braido F, Fumagalli F, Guerra L, Compalati E, Braga M, Lombardi C, Fassio O, Canonica GW. A new tool to evaluate the impact of chronic urticaria on quality of life: chronic urticaria quality of life questionnaire (CU-QoL). Allergy 2005; 60:1073-8. [PMID: 15969690 DOI: 10.1111/j.1398-9995.2005.00833.x] [Citation(s) in RCA: 176] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Health-related quality of Life in patients with chronic urticaria is evaluated by mean of generic instruments or questionnaire designed for skin diseases. No disease-specific tool is now available for the assessment of chronic urticaria impact from patients' viewpoint. OBJECTIVE The aim of our study is to develop and validate a new questionnaire specifically designed for the assessment of quality of life in chronic urticaria (Chronic Urticaria Quality of Life Questionnaire -- CU-Q(2)oL). METHODS In the development phase of CU-Q(2)oL an initial list of items of 37 items was compiled and given to 80 patients with chronic urticaria; the 23 most significant items were selected and converted into questions evaluating the answers on a Likert scale of five steps. The validation procedure involved 125 patients (86 F and 39 M) (age 42.17 +/- 9.24 years). RESULTS Following a statistical analysis, CU-Q(2)oL showed a six-dimensional structure and good levels of internal consistency for the extracted factors: Pruritus (0.79), Swelling (0.65), Impact on life activities (0.83), Sleep problems (0.77), Looks (0.83) and Limits (0.74). In stable conditions CU-Q(2)oL showed a good reliability, ranged between 0.64 and 0.92. Responsiveness to clinical changes was accomplished. DISCUSSION These results provide evidence that CU-Q(2)oL has specificity enough for being a valid tool for detecting the relative burden of CU on subjective wellbeing, and for obtaining a global evaluation both of CU impact and of treatments, taking into account the patient's point of view. The CU-Q(2)oL was easily and quickly filled up and well accepted by the patients.
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Baiardini I, Pasquali M, Braga M, Lombardi C, Fumagalli F, Guerra L, Compalati E, Braido F, Canonica G. CU-QoL: A new specific quality of life questionnaire for patients with chronic urticaria. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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95
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Braido F, Riccio A, Guerra L, Gamalero C, Zolezzi A, De Giovanni B, Canonica G. Detection of CC16 in sputum: A potential biomarker of COPD small airways damage. J Allergy Clin Immunol 2005. [DOI: 10.1016/j.jaci.2004.12.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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96
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Fabrizi F, Martin P, Lunghi G, Guerra L, De Vecchi AF, Ponticelli C. [HCV-related liver disease in hemodialysis population: clinical and biochemical characteristic]. GIORNALE ITALIANO DI NEFROLOGIA : ORGANO UFFICIALE DELLA SOCIETA ITALIANA DI NEFROLOGIA 2004; 21:483-7. [PMID: 15547881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/01/2023]
Abstract
Hepatitis C virus (HCV) infection remains frequent among patients on maintenance dialysis. It has been claimed that infrequent and slight abnormalities in serum aminotransferase activity could occur in dialysis patients with HCV. We describe a 61-year-old male patient on maintenance dialysis who acquired HCV by a nosocomial route. The natural history of HCV in this patient over 8 yrs featured frequent and high increases in serum aminotransferase and gamma-glutamyl transpeptidase (gamma-GT) levels. In December 2001, serum GOT and GPT were, respectively, 965 and 1294 UI/L; gamma-GT activity was 241 UI/L. HCV genotype was 2a/2c; median HCV RNA values in serum were 2.3 x 10⁵ UI/mL (range, 1.14 x 10⁴ to 4.6 x 10⁵ UI/mL). Total bilirubin, serum albumin, and colinesterase levels remained normal over the entire follow-up. Liver biopsy was not performed and interferon (IFN) therapy was not given. Currently, biochemical liver tests (GOT/GPT/gamma-GT) are in the upper range of normal values and the patient remains viremic. Efficacy and tolerability of initial monotherapy with IFN for chronic hepatitis C among dialysis patients are briefly discussed. Further studies are warranted to define the optimal anti-viral regimen for chronic hepatitis C in the dialysis population.
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97
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Durán-Cantolla J, Mar J, de La Torre Muñecas G, Rubio Aramendi R, Guerra L. [The availability in Spanish public hospitals of resources for diagnosing and treating sleep apnea-hypopnea syndrome]. Arch Bronconeumol 2004; 40:259-67. [PMID: 15161592 DOI: 10.1016/s1579-2129(06)70096-9] [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] [Indexed: 02/01/2023]
Abstract
INTRODUCTION AND OBJECTIVE Sleep apnea-hypopnea syndrome is associated with an overall deterioration in the patients health and affects between 1 and 2 million people in Spain. The objective of the present study was to evaluate the diagnostic and therapeutic resources available in Spain for dealing with this problem in terms of both infrastructure and human resources. METHODS We selected 461 general hospitals, 457 (99.1%) of which answered a questionnaire in the course of a telephone interview. RESULTS At the time of response, 219 hospitals (47.5%) reported performing sleep studies. Conventional polysomnography was available in 53% of those hospitals, respiratory polygraphy was used in 42%, and oximetry in 5%. In 47% of the hospitals, continuous positive airway pressure was titrated empirically in most cases; the number of patients being treated with CPAP was 109,752, that is, 269 per 100,000 population in Spain. CONCLUSIONS The level of resources available for diagnosing and treating sleep apnea-hypopnea syndrome, although improving, is clearly still inadequate. Currently, only 0.49 polysomnograph and 0.72 polygraph machines are available per 100,000 population, whereas 1 and 3 machines, respectively, are deemed necessary. Only 5% to 10% of the affected population has been diagnosed, and in 47% of the hospitals interviewed continuous positive airway pressure is not properly titrated. These results should be a clarion call to the health authorities to take the appropriate steps to address this health problem.
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Fumagalli F, Baiardini I, Pasquali M, Compalati E, Guerra L, Massacane P, Canonica GW. Antihistamines: do they work? Further well-controlled trials involving larger samples are needed. Allergy 2004; 59 Suppl 78:74-7. [PMID: 15245363 DOI: 10.1111/j.1398-9995.2004.00573.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Histamine is one of the most important steps in the phlogistic allergic reaction. Its activity is due to the link to specific receptors on the cellular surface. H1-receptors of second generation are the most currently prescribed drugs in allergic diseases for their high selectivity, little or no central sedative effect, rapid onset of action and long half lives. Antihistamines can modulate part of immunological mechanisms involved in the pathogenesis of allergic inflammation reducing mediator release and expression of adhesion molecules, regulating the release of cytokines, chemokines and consequently inflammatory cells recruitment. The anti-inflammatory effects of cetirizine, desloratadine and levocetirizine are reviewed. Quality of life is considered too, as a main parameter in a global evaluation of the antihistamine's effects.
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Durán-Cantolla J, Mar J, de La Torre Muñecas G, Rubio Aramendi R, Guerra L. El síndrome de apneas-hipopneas durante el sueño en España. Disponibilidad de recursos para su diagnóstico y tratamiento en los hospitales del Estado español. Arch Bronconeumol 2004. [DOI: 10.1157/13061435] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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100
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Guerra L, Primavera G, Raskovic D, Pellegrini G, Golisano O, Bondanza S, Kuhn S, Piazza P, Luci A, Atzori F, De Luca M. Permanent repigmentation of piebaldism by erbium:YAG laser and autologous cultured epidermis. Br J Dermatol 2004; 150:715-21. [PMID: 15099368 DOI: 10.1111/j.0007-0963.2004.05500.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Several surgical techniques have been proposed for the treatment of piebaldism. These procedures, however, are poorly suited for the treatment of large leucodermal lesions, can cause scars and require multiple donor sites. Recently, it has been reported that autologous cultured epidermis induces scarless repigmentation of large vitiligo lesions, using a single small donor site. OBJECTIVES To induce permanent repigmentation of large achromic lesions in patients suffering from piebaldism by means of autologous cultured epidermal grafts using a rapid, simple and non-invasive surgical procedure. METHODS Six patients with piebaldism were enrolled in this study. Achromic epidermis was removed by means of appropriately set erbium:YAG laser and autologous cultured epidermal grafts were applied on to the recipient bed. Melanocyte content was evaluated by 3,4-dihydroxyphenylalanine reaction. The percentage of repigmentation was calculated using a semiautomatic image analysis system. RESULTS Autologous cultured epidermis, bearing a controlled number of melanocytes, induced repigmentation of all piebald lesions. The mean percentage repigmentation was 95.45% (2791.5 cm2 repigmented/2924.2 cm2 transplanted). CONCLUSIONS Autologous cultured epidermal grafts induce permanent and complete repigmentation of piebald lesions, in the absence of scars. Erbium:YAG laser surgery is a rapid and precise tool for disepithelialization, hence allowing treatment of large piebald lesions during a single surgical operation.
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