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Zago G, Lunardi F, Calabrese F, Vuljan S, Urso L, Frega S, Pavan A, Polo V, Bonanno L, Attili I, Rea F, Conte P, Pasello G. Malignant pleural mesothelioma immune microenvironment and checkpoint expression before and after systemic cytotoxic treatment. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx389.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Frega S, Macerelli M, Del Conte A, Bonanno L, Bartoletti M, Polo V, Zago G, Follador A, Attili I, Pavan A, Urso L, Basso S, Fasola G, Conte P, Pasello G. Clinical features of never smoker patients with lung squamous cell carcinoma: A retrospective multicenter study. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx380.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Bodina A, Pavan A, Castaldi S. Resource allocation criteria in a hospital. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2017; 58:E184-E189. [PMID: 28900360 PMCID: PMC5584089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Allocate fixed resources among competing users is a challenge in terms of hospital management in order to obtain the best performance considering strategic objectives. In order to address this need, a system of evaluation in an important research and teaching hospital was designed. This study describes resource allocation criteria in a hospital focusing on the evaluation system and its developed application methodology. METHODS The indicator system allows the strategic management to rapidly detect the priorities in the evaluations of the Strategic, Organizational, Managerial, Economic, Research and Qualitative conditions of each unit. The chosen indicators are expressed with three numerical values, (1 indicating critical status, 2 acceptable conditions and 3 a good operational situation). RESULTS AND DISCUSSION The adopted evaluation system considered different thematic areas: Strategic, Organizational, Managerial, Economic, Research and Qualitative. In order to define each area, 3 fields of evaluation have been chosen. The indicators have been structured according to a pyramid system allowing creating a single indicator for each area for each unit. Furthermore, a single indicator has been fixed in order to facilitate a first consideration on whether to carry out or not closer examinations of the most critical units. This manuscript describes an attempt to define objective criteria for the allocation of scarce resources in order to achieve the hospital's strategic objectives. The indicators identified allow to obtain an overall score for each unit, which allows the management to prioritize the needs.
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Attili I, Frega S, Pavan A, Pasello G, Polo V, Zago G, Rea F, Calabrese F, Conte P, Bonanno L. Thymoma and thymic carcinoma: A real-life retrospective analysis. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx093.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Pavan A, Gall M, Greenlee MW. Motion-priming in crowding: evidence for motion averaging. J Vis 2014. [DOI: 10.1167/14.10.777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Macchi L, Pavan A. [Reorganize hospitals to improve efficiency and quality]. ANNALI DI IGIENE : MEDICINA PREVENTIVA E DI COMUNITA 2014; 26:11-14. [PMID: 25486686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The current economic difficulties and the changed epidemiological picture, characterized by an increase in life expectancy, which shows in the elderly, chronically ill and disabled the main, both health and social, care needs,r equires a remark on the hospital network and organization. Today, most of the application assistance is usually at low intensity of care, whereas the acute event is shrinking. The prevalence of hospital admissions concern the elderly, who get into acute events but on a substrate of chronicity and co-morbidity conditions. There must be a new model of hospital network, with the possibility of converting some hospital centres for medium intensity care and selecting few centres for high intensity care, where concentrating the more expensive technology and the skill and expertise of the professional. The -suggestion is a renewed health planning that detects:- hospitals for widespread disease, equipped with emergency war for minor codes-hospital at high intensity of care for emergency-urgency- hospital for particular fields of medical speciality and research.
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Scavia G, Ciaravino G, Luzzi I, Lenglet A, Ricci A, Barco L, Pavan A, Zaffanella F, Dionisi AM. A multistate epidemic outbreak of Salmonella Goldcoast infection in humans, June 2009 to March 2010: the investigation in Italy. Euro Surveill 2013; 18:20424. [DOI: 10.2807/ese.18.11.20424-en] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
After an urgent inquiry into a suspected international outbreak of Salmonella Goldcoast infection was launched by Hungary in October 2009 a nation-wide multidisciplinary investigation was carried out in Italy. The aims were to verify whether the higher than expected number of cases of S. Goldcoast infection that had occurred in Italy in the previous months were linked to the outbreak in Hungary and to determine their origin. Between June 2009 and March 2010, 79 confirmed cases of S. Goldcoast infection were identified. Of these, 17 were part of three different point-source outbreaks probably associated with the consumption of salami. Eating salami was also reported by 20 of the 39 sporadic cases that could be interviewed. Fifteen strains of S. Goldcoast isolated from the cases were typed by pulsed-field gel electrophoresis. They shared more than 90% homology with the Hungarian epidemic strain and were also highly similar to S. Goldcoast strains that had been isolated in Italy from pigs and pork-containing food items in 2009 and 2010. Although the origin of the outbreak and the common source linking the Hungarian and the Italian cases could not be definitively identified, our results suggest a possible zoonotic connection of the outbreak cases with the pork production chain.
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Pavan A, Skujevskis M. The role of stationary and dynamic test patterns in rapid forms of motion after-effect. J Vis 2013; 13:10. [DOI: 10.1167/13.1.10] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Casari S, Suligoi B, Camoni L, Pavan A, Macchi L, Capelli M, Paraninfo G, Compostella S, Castelli F, Carosi G, Donato F. Epidemiological and clinical characteristics and behaviours of individuals with newly diagnosed HIV infection: a multicentre study in north Italy. JOURNAL OF PREVENTIVE MEDICINE AND HYGIENE 2012; 53:190-194. [PMID: 23469586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
INTRODUCTION We aimed to investigate socio-demographic, clinical and epidemiological characteristics and behaviours of subjects with new HIV diagnosis. METHODS We carried out a multi-centre cross-sectional study comprising 17 infectious diseases units in the Lombardy Region, North Italy. All subjects with a first positive test for HIV infection examined in 2008-09 were interviewed using a structured questionnaire. RESULTS 472 patients were enrolled (mean age 39.8 years, standard deviation [SD] 11.5), mostly males (78%), and born in Italy (77%). The most common routes of HIV transmission were heterosexual intercourse (49%) and sex among men who have sex with men (MSM) (40%). Never/sometimes use of a condom with occasional partners was associated with male gender, heterosexual transmission route, and with >10 sexual partners in their lifetime. 47% had previous HIV negative tests. Having had more than 2 previous HIV negative tests was associated with younger age, MSM transmission route, CD4+ lymphocyte count >350/microl and self-perception of risk. DISCUSSION This study shows that there is a large portion of the adult population, especially heterosexual men aged 45 years and over, who are at high risk of acquiring and transmitting HIV infection and undergoing the HIV diagnostic test late, due to risk behaviours combined with a low perception of being at risk. Compared to people infected by heterosexual contacts, MSM show a greater awareness of being at risk of infection, but this knowledge has a low impact in reducing at-risk behaviours.
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Mather G, Pavan A, Contillo A. Modelling adaptation using the Adelson-Bergen energy sensor. J Vis 2012. [DOI: 10.1167/12.9.763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Mughini-Gras L, Graziani C, Biorci F, Pavan A, Magliola R, Ricci A, Gilli G, Carraro E, Busani L. Surveillance of acute infectious gastroenteritis (1992–2009) and food-borne disease outbreaks (1996–2009) in Italy, with a focus on the Piedmont and Lombardy regions. Euro Surveill 2012. [DOI: 10.2807/ese.17.08.20098-en] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We describe trends in the occurrence of acute infectious gastroenteritis (1992 to 2009) and food-borne disease outbreaks (1996 to 2009) in Italy. In 2002, the Piedmont region implemented a surveillance system for early detection and control of food-borne disease outbreaks; in 2004, the Lombardy region implemented a system for surveillance of all notifiable human infectious diseases. Both systems are internet based. We compared the regional figures with the national mean using official notification data provided by the National Infectious Diseases Notification System (SIMI) and the National Institute of Statistics (ISTAT), in order to provide additional information about the epidemiology of these diseases in Italy. When compared with the national mean, data from the two regional systems showed a significant increase in notification rates of non-typhoid salmonellosis and infectious diarrhoea other than non-typhoid salmonellosis, but for food-borne disease outbreaks, the increase was not statistically significant. Although the two regional systems have different objectives and structures, they showed improved sensitivity regarding notification of cases of acute infectious gastroenteritis and, to a lesser extent, food-borne disease outbreaks, and thus provide a more complete picture of the epidemiology of these diseases in Italy.
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Mughini-Gras L, Graziani C, Biorci F, Pavan A, Magliola R, Ricci A, Gilli G, Carraro E, Busani L. Surveillance of acute infectious gastroenteritis (1992-2009) and food-borne disease outbreaks (1996-2009) in Italy, with a focus on the Piedmont and Lombardy regions. Euro Surveill 2012; 17:20098. [PMID: 22401508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023] Open
Abstract
We describe trends in the occurrence of acute infectious gastroenteritis (1992 to 2009) and food-borne disease outbreaks (1996 to 2009) in Italy. In 2002, the Piedmont region implemented a surveillance system for early detection and control of food-borne disease outbreaks; in 2004, the Lombardy region implemented a system for surveillance of all notifiable human infectious diseases. Both systems are internet based. We compared the regional figures with the national mean using official notification data provided by the National Infectious Diseases Notification System (SIMI) and the National Institute of Statistics (ISTAT), in order to provide additional information about the epidemiology of these diseases in Italy. When compared with the national mean, data from the two regional systems showed a significant increase in notification rates of non-typhoid salmonellosis and infectious diarrhea other than non-typhoid salmonellosis, but for foodborne disease outbreaks, the increase was not statistically significant. Although the two regional systems have different objectives and structures, they showed improved sensitivity regarding notification of cases of acute infectious gastroenteritis and, to a lesser extent, food-borne disease outbreaks, and thus provide a more complete picture of the epidemiology of these diseases in Italy.
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Andreetti C, Ibrahim M, Ciccone A, D'Andrilli A, Poggi C, Maurizi G, Pavan A, Rendina EA. Autologus platelet gel for the management of persistent alveolar fistula after lung resection. MINERVA CHIR 2010; 65:695-699. [PMID: 21224802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Postoperative alveolar fistula (AF) associated with pleural cavity (PC) is a serious complication and a therapeutic challenge in thoracic surgery. The purpose of this study was to assess the efficacy of the use of the autologous platelet gel for the treatment of AF and PC. We treated a patient with post lung resection persistent alveolar fistula using a autologous platelet gel, a cellular compose produces at the Division of Immunohaematoligy and Trasfusion. The platelet gel-PRP (Platelet-Rich Plasma) is a biological material made of autologous platelets, extracted from a small amount of the patient's blood, centrifuged at 1100 g for 9 min. The PRP obtained was activated by addition of autologous thrombin and calcium chloride to form a matrix of fibrin (PRFM) thick. The patient presented important air leak after middle lobe wedge resection for solitary lung lesion with standard open decortication for important pleural adhesions post pleuritis. On postoperative day XIII the patient developed a thoracic empyema and consequently underwent a antibiotic pleural irrigation through the chest drainage based on the microbiological analysis of the pleural fluid. After a week we obtained the resolution of the empyema but a residual space remained and air leak persisted. We treated the patient with autologous platelet gel. We administer 7.5 mL of the autologous platelet gel across the chest drainage ever 72 hours for 3 times. After the third application we had the closure of the cavity and the cessation of air leak. Autologous platelet gel is easy to use, safe and inexpensive. It can be considered a valid therapeutic option in selected patients with a alveolar fistula and a lung partial re-expansion. The product consist of a significant amount of cellular components with healing anti-inflammatory an proregenerative properities that permit the body to heal tissue wounds faster and more efficiently. A sterile pleural cavity is fundamental conditions for the final success of the procedure.
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Oggioni C, Fontana G, Pavan A, Gramegna M, Ferretti V, Piatti A, Edefonti V, Tunnesi S, Sala G, Pontello M. [Investigation of potential risk factors for Salmonella enterica subsp enterica serotype Napoli: a nested case-control study in Lombardia region]. ANNALI DI IGIENE : MEDICINA PREVENTIVA E DI COMUNITA 2010; 22:327-335. [PMID: 21425643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Enter-net surveillance system has detected the re-emergence of Salmonella enterica subsp enterica serotype Napoli (S. Napoli) since 2002. Preliminary data show that food vehicle could not be the only one implicated in the transmission of this serotype. A nested case-control study has been conducted using data form a prospective cohort: for each salmonellosis notification in Lombardia from May 2004 to December 2005 an ad hoc epidemiological investigation has been performed. Cases have been defined as subjects affected by salmonellosis with a positive faecal sample for Salmonella serotype Napoli and controls as subjects affected by salmonellosis with a positive faecal sample for Salmonella serotype not Napoli. Among 2185 salmonellosis notifications collected by 12 of 15 Local Health Authorities, we identified 67 cases and 867 controls. Infection due to S. Napoli were significantly more common among subjects with exposure to surface water (adjusted Odds Ratio (OR) = 3,82; 95% Confidence Interval (C.I.)=1,03-14,19), to domestic animals (adjusted OR = 3,22; 95% C.I. = 1,28-8,10) and among person who practice activities connected to surface water (adjusted OR 3,88; 95% C.I.=1,15-13,05) compared to subjects not exposed to these factors. Hyperendemia of S. Napoli could be attributable to an animal reservoir not yet identified: surface water contamination may be a direct (waterborne infection) or indirect (foodborne infection) vehicle for transmission of S. Napoli. behaviour. Regarding the relations of the neuroendocrine parameters and driving behaviour, positive correlations were observed between dopamine levels and frequency of driving violations while a negative relationship was found between adrenaline levels and frequency of driving errors. In conclusion the identification of psycho-physiological variables related to driving risky behaviour might be a useful instrument to design traffic safety programs tailored to high risk subjects.
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Campana G, Casco C, Pavan A, Manassi M. Rapid forms of visual motion priming and motion aftereffect have similar time course but different neural substrates in first- and second-order motion. J Vis 2010. [DOI: 10.1167/9.8.685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Rizzo C, Vescio F, Declich S, Finarelli AC, Macini P, Mattivi A, Rossini G, Piovesan C, Barzon L, Palù G, Gobbi F, Macchi L, Pavan A, Magurano F, Ciufolini MG, Nicoletti L, Salmaso S, Rezza G. West Nile virus transmission with human cases in Italy, August - September 2009. Euro Surveill 2009. [DOI: 10.2807/ese.14.40.19353-en] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
In 2009, to date 16 human cases of West Nile neuroinvasive disease (WNND) have been reported in Italy, in three regions: Veneto, Emilia-Romagna and Lombardia. The number of cases is higher compared with last year when nine cases were identified (eight cases of WNND and one case of West Nile fever) and the geographical distribution indicates spread from east to west.
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Rizzo C, Vescio F, Declich S, Finarelli AC, Macini P, Mattivi A, Rossini G, Piovesan C, Barzon L, Palù G, Gobbi F, Macchi L, Pavan A, Magurano F, Ciufolini MG, Nicoletti L, Salmaso S, Rezza G. West Nile virus transmission with human cases in Italy, August - September 2009. Euro Surveill 2009; 14:19353. [PMID: 19822123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
In 2009, to date 16 human cases of West Nile neuroinvasive disease (WNND) have been reported in Italy, in three regions: Veneto, Emilia-Romagna and Lombardia. The number of cases is higher compared with last year when nine cases were identified (eight cases of WNND and one case of West Nile fever) and the geographical distribution indicates spread from east to west.
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Pavan A, Campana G, Guerreschi M, Manassi M, Casco C. Separate motion-detecting mechanisms for first- and second-order patterns revealed by rapid forms of visual motion priming and motion aftereffect. J Vis 2009; 9:27.1-16. [PMID: 20053090 DOI: 10.1167/9.11.27] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2009] [Accepted: 10/02/2009] [Indexed: 11/24/2022] Open
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Scarcella C, Carasi S, Cadoria F, Macchi L, Pavan A, Salamana M, Alborali GL, Losio MN, Boni P, Lavazza A, Seyler T. An outbreak of viral gastroenteritis linked to municipal water supply, Lombardy, Italy, June 2009. Euro Surveill 2009; 14. [DOI: 10.2807/ese.14.29.19274-en] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report an outbreak of viral gastroenteritis linked to municipal drinking water in a town in northern Italy in June 2009. Over one month we identified 299 probable cases of whom 30 were confirmed for at least one of the following viruses: norovirus, rotavirus, enterovirus or astrovirus. Water samples and filters from the water system also tested positive for norovirus and enterovirus. Control measures included treating the water system with chlorine dioxide and filters with peracetic acid, while providing temporary alternative sources of drinking water to the population.
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Pulcinelli FM, Manzari G, Bartoli M, Faggioni A, Mancusa RL, Pavan A, Sansolini T, Torrisi MR, Gazzaniga PP. Mechanisms of the Platelet Proaggregating Activity of Human Carcinoma A431 Cells. Platelets 2009; 6:213-20. [DOI: 10.3109/09537109509078458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Andreoni B, Crosta C, Sonzogni A, Pirola M, Pavan A, Bisanti L, Senore C, Sassatelli R, Sguinzi R, Bertani E, Bianchi P, Chiappa A. Comparison between endoscopic and surgical treatment of screen-detected versus non-screen-detected colorectal cancers. Ecancermedicalscience 2009; 3:142. [PMID: 22276007 PMCID: PMC3224002 DOI: 10.3332/ecancer.2009.142] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2009] [Indexed: 11/08/2022] Open
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Macchi L, Pavan A, Carreri V. [Law simplification: the Lombardy Region experience]. ANNALI DI IGIENE : MEDICINA PREVENTIVA E DI COMUNITA 2008; 20:25-30. [PMID: 18773601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Lombardy Region, adopted its own rules to reorganize and to relaunch health prevention activities. Particularly, the started way foresees for the useless activity divestment, not backed by scientific evidences and of no effect to preserve public health. In this optics, the run is inserted that foresees the planning of the activity of official control, based on the acquisition of the epidemiological and the productive, economic and social territorial context data, so to be able to point out interventions priorities and to graduate health risks. Similarly the integration among different operators, belonging to different Services and Departments too, it's considered necessary, passing from the planning of independent Plans of sector to Plans bringing common and joined objectives, in a business logic. The change of perspective, needs a suitable monitoring of the obtained results aiming to start deepened evaluations to implement or to reassess the regional strategic lines.
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Cipriani P, Guiducci S, Miniati I, Cinelli M, Urbani S, Marrelli A, Dolo V, Pavan A, Saccardi R, Tyndall A, Giacomelli R, Cerinic MM. Impairment of endothelial cell differentiation from bone marrow-derived mesenchymal stem cells: new insight into the pathogenesis of systemic sclerosis. ACTA ACUST UNITED AC 2007; 56:1994-2004. [PMID: 17530639 DOI: 10.1002/art.22698] [Citation(s) in RCA: 105] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE Systemic sclerosis (SSc) is a disorder characterized by vascular damage and fibrosis of the skin and internal organs. Despite marked tissue hypoxia, there is no evidence of compensatory angiogenesis. The ability of mesenchymal stem cells (MSCs) to differentiate into endothelial cells was recently demonstrated. The aim of this study was to determine whether impaired differentiation of MSCs into endothelial cells in SSc might contribute to disease pathogenesis by decreasing endothelial repair. METHODS MSCs obtained from 7 SSc patients and 15 healthy controls were characterized. The number of colony-forming unit-fibroblastoid colonies was determined. After culture in endothelial-specific medium, the endothelial-like MSC (EL-MSC) phenotype was assessed according to the surface expression of vascular endothelial growth factor receptors (VEGFRs). Senescence, chemoinvasion, and capillary morphogenesis studies were also performed. RESULTS MSCs from SSc patients displayed the same phenotype and clonogenic activity as those from controls. In SSc MSCs, a decreased percentage of VEGFR-2+, CXCR4+, VEGFR-2+/CXCR4+ cells and early senescence was detected. After culturing, SSc EL-MSCs showed increased expression of VEGFR-1, VEGFR-2, and CXCR4, did not express CD31 or annexin V, and showed significantly decreased migration after specific stimuli. Moreover, the addition of VEGF and stromal cell-derived factor 1 to cultured SSc EL-MSCs increased their angiogenic potential less than that in controls. CONCLUSION Our data strongly suggest that endothelial repair may be affected in SSc. The possibility that endothelial progenitor cells could be used to increase vessel growth in chronic ischemic tissues may open up new avenues in the treatment of vascular damage caused by SSc.
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MESH Headings
- Adolescent
- Adult
- Case-Control Studies
- Cell Differentiation/physiology
- Cells, Cultured
- Cellular Senescence
- Chemokine CXCL12
- Chemokines, CXC/metabolism
- Endothelial Cells/physiology
- Endothelium, Vascular/metabolism
- Endothelium, Vascular/pathology
- Endothelium, Vascular/physiopathology
- Female
- Humans
- Immunophenotyping
- Male
- Mesenchymal Stem Cells/metabolism
- Mesenchymal Stem Cells/pathology
- Mesenchymal Stem Cells/physiology
- Middle Aged
- Neovascularization, Pathologic
- Phenotype
- Platelet Endothelial Cell Adhesion Molecule-1/metabolism
- Receptors, CXCR4/metabolism
- Receptors, Vascular Endothelial Growth Factor/metabolism
- Scleroderma, Systemic/pathology
- Scleroderma, Systemic/physiopathology
- Stem Cells/metabolism
- Stem Cells/pathology
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Pavan A, Wang F. Robustness of PSPACE-complete sets. INFORM PROCESS LETT 2007. [DOI: 10.1016/j.ipl.2007.02.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Thomaseth K, Pavan A, Pacini G, Ahrén B. Glucagon-like peptide-1 accelerates the onset of insulin action on glucose disappearance in mice. Am J Physiol Endocrinol Metab 2007; 292:E1808-14. [PMID: 17311896 DOI: 10.1152/ajpendo.00303.2006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glucagon-like peptide-1 (GLP-1) plays a significant role in glucose homeostasis through its incretin effect on insulin secretion. However, GLP-1 also exhibits extrapancreatic actions, and in particular its possible influences on insulin sensitivity are controversial. To study the dynamic action of GLP-1 on insulin sensitivity, we applied advanced statistical modeling methods to study glucose disappearance in mice that underwent intravenous glucose tolerance test with administration of GLP-1 at various dose levels. In particular, the minimal model of glucose disappearance was exploited within a population estimation framework for accurate detection of relationships between glucose disappearance parameters and GLP-1. Minimal model parameters were estimated from glucose and insulin data collected in 209 anesthetized normal mice after intravenous injection of glucose (1 g/kg) alone or with GLP-1 (0.03-100 nmol/kg). Insulin secretion markedly increased, as expected, with increasing GLP-1 dose. However, minimal model-derived indexes, i.e., insulin sensitivity and glucose effectiveness, did not significantly change with GLP-1 dose. Instead, fractional turnover rate of insulin action [P2 = 0.0207 +/- 24.3% (min) at zero GLP-1 dose] increased steadily with administered GLP-1 dose, with significant differences at 10.4 nmol/kg (P2 = 0.040 +/- 15.5%, P = 0.0046) and 31.2 nmol/kg (P2 = 0.050 +/- 29.2%, P = 0.01). These results show that GLP-1 influences the dynamics of insulin action by accelerating insulin action following glucose challenge. This is a novel mechanism contributing to the glucose-lowering action of GLP-1.
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